?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
No empty .Rs/.Re
[netbsd-mini2440.git] / external / gpl3 / binutils / dist / bfd / elf32-arm.c
blob399034820287896cf601e79bb9bd157e4d90e7c1
1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
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.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "libiberty.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf-vxworks.h"
28 #include "elf/arm.h"
29
30 /* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32 #define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
34
35 /* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37 #define RELOC_SIZE(HTAB) \
38 ((HTAB)->use_rel \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
41
42 /* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44 #define SWAP_RELOC_IN(HTAB) \
45 ((HTAB)->use_rel \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
48
49 /* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51 #define SWAP_RELOC_OUT(HTAB) \
52 ((HTAB)->use_rel \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
55
56 #define elf_info_to_howto 0
57 #define elf_info_to_howto_rel elf32_arm_info_to_howto
58
59 #define ARM_ELF_ABI_VERSION 0
60 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
61
62 static struct elf_backend_data elf32_arm_vxworks_bed;
63
64 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
65 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
66 in that slot. */
67
68 static reloc_howto_type elf32_arm_howto_table_1[] =
69 {
70 /* No relocation. */
71 HOWTO (R_ARM_NONE, /* type */
72 0, /* rightshift */
73 0, /* size (0 = byte, 1 = short, 2 = long) */
74 0, /* bitsize */
75 FALSE, /* pc_relative */
76 0, /* bitpos */
77 complain_overflow_dont,/* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_ARM_NONE", /* name */
80 FALSE, /* partial_inplace */
81 0, /* src_mask */
82 0, /* dst_mask */
83 FALSE), /* pcrel_offset */
84
85 HOWTO (R_ARM_PC24, /* type */
86 2, /* rightshift */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
88 24, /* bitsize */
89 TRUE, /* pc_relative */
90 0, /* bitpos */
91 complain_overflow_signed,/* complain_on_overflow */
92 bfd_elf_generic_reloc, /* special_function */
93 "R_ARM_PC24", /* name */
94 FALSE, /* partial_inplace */
95 0x00ffffff, /* src_mask */
96 0x00ffffff, /* dst_mask */
97 TRUE), /* pcrel_offset */
98
99 /* 32 bit absolute */
100 HOWTO (R_ARM_ABS32, /* type */
101 0, /* rightshift */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
103 32, /* bitsize */
104 FALSE, /* pc_relative */
105 0, /* bitpos */
106 complain_overflow_bitfield,/* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_ARM_ABS32", /* name */
109 FALSE, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE), /* pcrel_offset */
113
114 /* standard 32bit pc-relative reloc */
115 HOWTO (R_ARM_REL32, /* type */
116 0, /* rightshift */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
118 32, /* bitsize */
119 TRUE, /* pc_relative */
120 0, /* bitpos */
121 complain_overflow_bitfield,/* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_ARM_REL32", /* name */
124 FALSE, /* partial_inplace */
125 0xffffffff, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE), /* pcrel_offset */
128
129 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
130 HOWTO (R_ARM_LDR_PC_G0, /* type */
131 0, /* rightshift */
132 0, /* size (0 = byte, 1 = short, 2 = long) */
133 32, /* bitsize */
134 TRUE, /* pc_relative */
135 0, /* bitpos */
136 complain_overflow_dont,/* complain_on_overflow */
137 bfd_elf_generic_reloc, /* special_function */
138 "R_ARM_LDR_PC_G0", /* name */
139 FALSE, /* partial_inplace */
140 0xffffffff, /* src_mask */
141 0xffffffff, /* dst_mask */
142 TRUE), /* pcrel_offset */
143
144 /* 16 bit absolute */
145 HOWTO (R_ARM_ABS16, /* type */
146 0, /* rightshift */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
148 16, /* bitsize */
149 FALSE, /* pc_relative */
150 0, /* bitpos */
151 complain_overflow_bitfield,/* complain_on_overflow */
152 bfd_elf_generic_reloc, /* special_function */
153 "R_ARM_ABS16", /* name */
154 FALSE, /* partial_inplace */
155 0x0000ffff, /* src_mask */
156 0x0000ffff, /* dst_mask */
157 FALSE), /* pcrel_offset */
158
159 /* 12 bit absolute */
160 HOWTO (R_ARM_ABS12, /* type */
161 0, /* rightshift */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
163 12, /* bitsize */
164 FALSE, /* pc_relative */
165 0, /* bitpos */
166 complain_overflow_bitfield,/* complain_on_overflow */
167 bfd_elf_generic_reloc, /* special_function */
168 "R_ARM_ABS12", /* name */
169 FALSE, /* partial_inplace */
170 0x00000fff, /* src_mask */
171 0x00000fff, /* dst_mask */
172 FALSE), /* pcrel_offset */
173
174 HOWTO (R_ARM_THM_ABS5, /* type */
175 6, /* rightshift */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
177 5, /* bitsize */
178 FALSE, /* pc_relative */
179 0, /* bitpos */
180 complain_overflow_bitfield,/* complain_on_overflow */
181 bfd_elf_generic_reloc, /* special_function */
182 "R_ARM_THM_ABS5", /* name */
183 FALSE, /* partial_inplace */
184 0x000007e0, /* src_mask */
185 0x000007e0, /* dst_mask */
186 FALSE), /* pcrel_offset */
187
188 /* 8 bit absolute */
189 HOWTO (R_ARM_ABS8, /* type */
190 0, /* rightshift */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
192 8, /* bitsize */
193 FALSE, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_bitfield,/* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_ARM_ABS8", /* name */
198 FALSE, /* partial_inplace */
199 0x000000ff, /* src_mask */
200 0x000000ff, /* dst_mask */
201 FALSE), /* pcrel_offset */
202
203 HOWTO (R_ARM_SBREL32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
207 FALSE, /* pc_relative */
208 0, /* bitpos */
209 complain_overflow_dont,/* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_ARM_SBREL32", /* name */
212 FALSE, /* partial_inplace */
213 0xffffffff, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
216
217 HOWTO (R_ARM_THM_CALL, /* type */
218 1, /* rightshift */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
220 25, /* bitsize */
221 TRUE, /* pc_relative */
222 0, /* bitpos */
223 complain_overflow_signed,/* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
225 "R_ARM_THM_CALL", /* name */
226 FALSE, /* partial_inplace */
227 0x07ff07ff, /* src_mask */
228 0x07ff07ff, /* dst_mask */
229 TRUE), /* pcrel_offset */
230
231 HOWTO (R_ARM_THM_PC8, /* type */
232 1, /* rightshift */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
234 8, /* bitsize */
235 TRUE, /* pc_relative */
236 0, /* bitpos */
237 complain_overflow_signed,/* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_ARM_THM_PC8", /* name */
240 FALSE, /* partial_inplace */
241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
243 TRUE), /* pcrel_offset */
244
245 HOWTO (R_ARM_BREL_ADJ, /* type */
246 1, /* rightshift */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
248 32, /* bitsize */
249 FALSE, /* pc_relative */
250 0, /* bitpos */
251 complain_overflow_signed,/* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_ARM_BREL_ADJ", /* name */
254 FALSE, /* partial_inplace */
255 0xffffffff, /* src_mask */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
258
259 HOWTO (R_ARM_SWI24, /* type */
260 0, /* rightshift */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
262 0, /* bitsize */
263 FALSE, /* pc_relative */
264 0, /* bitpos */
265 complain_overflow_signed,/* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_ARM_SWI24", /* name */
268 FALSE, /* partial_inplace */
269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
271 FALSE), /* pcrel_offset */
272
273 HOWTO (R_ARM_THM_SWI8, /* type */
274 0, /* rightshift */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
276 0, /* bitsize */
277 FALSE, /* pc_relative */
278 0, /* bitpos */
279 complain_overflow_signed,/* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_ARM_SWI8", /* name */
282 FALSE, /* partial_inplace */
283 0x00000000, /* src_mask */
284 0x00000000, /* dst_mask */
285 FALSE), /* pcrel_offset */
286
287 /* BLX instruction for the ARM. */
288 HOWTO (R_ARM_XPC25, /* type */
289 2, /* rightshift */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
291 25, /* bitsize */
292 TRUE, /* pc_relative */
293 0, /* bitpos */
294 complain_overflow_signed,/* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_ARM_XPC25", /* name */
297 FALSE, /* partial_inplace */
298 0x00ffffff, /* src_mask */
299 0x00ffffff, /* dst_mask */
300 TRUE), /* pcrel_offset */
301
302 /* BLX instruction for the Thumb. */
303 HOWTO (R_ARM_THM_XPC22, /* type */
304 2, /* rightshift */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
306 22, /* bitsize */
307 TRUE, /* pc_relative */
308 0, /* bitpos */
309 complain_overflow_signed,/* complain_on_overflow */
310 bfd_elf_generic_reloc, /* special_function */
311 "R_ARM_THM_XPC22", /* name */
312 FALSE, /* partial_inplace */
313 0x07ff07ff, /* src_mask */
314 0x07ff07ff, /* dst_mask */
315 TRUE), /* pcrel_offset */
316
317 /* Dynamic TLS relocations. */
318
319 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
320 0, /* rightshift */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
322 32, /* bitsize */
323 FALSE, /* pc_relative */
324 0, /* bitpos */
325 complain_overflow_bitfield,/* complain_on_overflow */
326 bfd_elf_generic_reloc, /* special_function */
327 "R_ARM_TLS_DTPMOD32", /* name */
328 TRUE, /* partial_inplace */
329 0xffffffff, /* src_mask */
330 0xffffffff, /* dst_mask */
331 FALSE), /* pcrel_offset */
332
333 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 32, /* bitsize */
337 FALSE, /* pc_relative */
338 0, /* bitpos */
339 complain_overflow_bitfield,/* complain_on_overflow */
340 bfd_elf_generic_reloc, /* special_function */
341 "R_ARM_TLS_DTPOFF32", /* name */
342 TRUE, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE), /* pcrel_offset */
346
347 HOWTO (R_ARM_TLS_TPOFF32, /* type */
348 0, /* rightshift */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
350 32, /* bitsize */
351 FALSE, /* pc_relative */
352 0, /* bitpos */
353 complain_overflow_bitfield,/* complain_on_overflow */
354 bfd_elf_generic_reloc, /* special_function */
355 "R_ARM_TLS_TPOFF32", /* name */
356 TRUE, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 FALSE), /* pcrel_offset */
360
361 /* Relocs used in ARM Linux */
362
363 HOWTO (R_ARM_COPY, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 32, /* bitsize */
367 FALSE, /* pc_relative */
368 0, /* bitpos */
369 complain_overflow_bitfield,/* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_ARM_COPY", /* name */
372 TRUE, /* partial_inplace */
373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
375 FALSE), /* pcrel_offset */
376
377 HOWTO (R_ARM_GLOB_DAT, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 32, /* bitsize */
381 FALSE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_bitfield,/* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_ARM_GLOB_DAT", /* name */
386 TRUE, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 FALSE), /* pcrel_offset */
390
391 HOWTO (R_ARM_JUMP_SLOT, /* type */
392 0, /* rightshift */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
394 32, /* bitsize */
395 FALSE, /* pc_relative */
396 0, /* bitpos */
397 complain_overflow_bitfield,/* complain_on_overflow */
398 bfd_elf_generic_reloc, /* special_function */
399 "R_ARM_JUMP_SLOT", /* name */
400 TRUE, /* partial_inplace */
401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
403 FALSE), /* pcrel_offset */
404
405 HOWTO (R_ARM_RELATIVE, /* type */
406 0, /* rightshift */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
408 32, /* bitsize */
409 FALSE, /* pc_relative */
410 0, /* bitpos */
411 complain_overflow_bitfield,/* complain_on_overflow */
412 bfd_elf_generic_reloc, /* special_function */
413 "R_ARM_RELATIVE", /* name */
414 TRUE, /* partial_inplace */
415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
417 FALSE), /* pcrel_offset */
418
419 HOWTO (R_ARM_GOTOFF32, /* type */
420 0, /* rightshift */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
422 32, /* bitsize */
423 FALSE, /* pc_relative */
424 0, /* bitpos */
425 complain_overflow_bitfield,/* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_ARM_GOTOFF32", /* name */
428 TRUE, /* partial_inplace */
429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
432
433 HOWTO (R_ARM_GOTPC, /* type */
434 0, /* rightshift */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
436 32, /* bitsize */
437 TRUE, /* pc_relative */
438 0, /* bitpos */
439 complain_overflow_bitfield,/* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_ARM_GOTPC", /* name */
442 TRUE, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE), /* pcrel_offset */
446
447 HOWTO (R_ARM_GOT32, /* type */
448 0, /* rightshift */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
450 32, /* bitsize */
451 FALSE, /* pc_relative */
452 0, /* bitpos */
453 complain_overflow_bitfield,/* complain_on_overflow */
454 bfd_elf_generic_reloc, /* special_function */
455 "R_ARM_GOT32", /* name */
456 TRUE, /* partial_inplace */
457 0xffffffff, /* src_mask */
458 0xffffffff, /* dst_mask */
459 FALSE), /* pcrel_offset */
460
461 HOWTO (R_ARM_PLT32, /* type */
462 2, /* rightshift */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
464 24, /* bitsize */
465 TRUE, /* pc_relative */
466 0, /* bitpos */
467 complain_overflow_bitfield,/* complain_on_overflow */
468 bfd_elf_generic_reloc, /* special_function */
469 "R_ARM_PLT32", /* name */
470 FALSE, /* partial_inplace */
471 0x00ffffff, /* src_mask */
472 0x00ffffff, /* dst_mask */
473 TRUE), /* pcrel_offset */
474
475 HOWTO (R_ARM_CALL, /* type */
476 2, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 24, /* bitsize */
479 TRUE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_signed,/* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_ARM_CALL", /* name */
484 FALSE, /* partial_inplace */
485 0x00ffffff, /* src_mask */
486 0x00ffffff, /* dst_mask */
487 TRUE), /* pcrel_offset */
488
489 HOWTO (R_ARM_JUMP24, /* type */
490 2, /* rightshift */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
492 24, /* bitsize */
493 TRUE, /* pc_relative */
494 0, /* bitpos */
495 complain_overflow_signed,/* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_ARM_JUMP24", /* name */
498 FALSE, /* partial_inplace */
499 0x00ffffff, /* src_mask */
500 0x00ffffff, /* dst_mask */
501 TRUE), /* pcrel_offset */
502
503 HOWTO (R_ARM_THM_JUMP24, /* type */
504 1, /* rightshift */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
506 24, /* bitsize */
507 TRUE, /* pc_relative */
508 0, /* bitpos */
509 complain_overflow_signed,/* complain_on_overflow */
510 bfd_elf_generic_reloc, /* special_function */
511 "R_ARM_THM_JUMP24", /* name */
512 FALSE, /* partial_inplace */
513 0x07ff2fff, /* src_mask */
514 0x07ff2fff, /* dst_mask */
515 TRUE), /* pcrel_offset */
516
517 HOWTO (R_ARM_BASE_ABS, /* type */
518 0, /* rightshift */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
520 32, /* bitsize */
521 FALSE, /* pc_relative */
522 0, /* bitpos */
523 complain_overflow_dont,/* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_ARM_BASE_ABS", /* name */
526 FALSE, /* partial_inplace */
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
529 FALSE), /* pcrel_offset */
530
531 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
532 0, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 12, /* bitsize */
535 TRUE, /* pc_relative */
536 0, /* bitpos */
537 complain_overflow_dont,/* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_ARM_ALU_PCREL_7_0", /* name */
540 FALSE, /* partial_inplace */
541 0x00000fff, /* src_mask */
542 0x00000fff, /* dst_mask */
543 TRUE), /* pcrel_offset */
544
545 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
546 0, /* rightshift */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
548 12, /* bitsize */
549 TRUE, /* pc_relative */
550 8, /* bitpos */
551 complain_overflow_dont,/* complain_on_overflow */
552 bfd_elf_generic_reloc, /* special_function */
553 "R_ARM_ALU_PCREL_15_8",/* name */
554 FALSE, /* partial_inplace */
555 0x00000fff, /* src_mask */
556 0x00000fff, /* dst_mask */
557 TRUE), /* pcrel_offset */
558
559 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
560 0, /* rightshift */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
562 12, /* bitsize */
563 TRUE, /* pc_relative */
564 16, /* bitpos */
565 complain_overflow_dont,/* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_ARM_ALU_PCREL_23_15",/* name */
568 FALSE, /* partial_inplace */
569 0x00000fff, /* src_mask */
570 0x00000fff, /* dst_mask */
571 TRUE), /* pcrel_offset */
572
573 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 12, /* bitsize */
577 FALSE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_dont,/* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_ARM_LDR_SBREL_11_0",/* name */
582 FALSE, /* partial_inplace */
583 0x00000fff, /* src_mask */
584 0x00000fff, /* dst_mask */
585 FALSE), /* pcrel_offset */
586
587 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
588 0, /* rightshift */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
590 8, /* bitsize */
591 FALSE, /* pc_relative */
592 12, /* bitpos */
593 complain_overflow_dont,/* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_ARM_ALU_SBREL_19_12",/* name */
596 FALSE, /* partial_inplace */
597 0x000ff000, /* src_mask */
598 0x000ff000, /* dst_mask */
599 FALSE), /* pcrel_offset */
600
601 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
602 0, /* rightshift */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
604 8, /* bitsize */
605 FALSE, /* pc_relative */
606 20, /* bitpos */
607 complain_overflow_dont,/* complain_on_overflow */
608 bfd_elf_generic_reloc, /* special_function */
609 "R_ARM_ALU_SBREL_27_20",/* name */
610 FALSE, /* partial_inplace */
611 0x0ff00000, /* src_mask */
612 0x0ff00000, /* dst_mask */
613 FALSE), /* pcrel_offset */
614
615 HOWTO (R_ARM_TARGET1, /* type */
616 0, /* rightshift */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
618 32, /* bitsize */
619 FALSE, /* pc_relative */
620 0, /* bitpos */
621 complain_overflow_dont,/* complain_on_overflow */
622 bfd_elf_generic_reloc, /* special_function */
623 "R_ARM_TARGET1", /* name */
624 FALSE, /* partial_inplace */
625 0xffffffff, /* src_mask */
626 0xffffffff, /* dst_mask */
627 FALSE), /* pcrel_offset */
628
629 HOWTO (R_ARM_ROSEGREL32, /* type */
630 0, /* rightshift */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
632 32, /* bitsize */
633 FALSE, /* pc_relative */
634 0, /* bitpos */
635 complain_overflow_dont,/* complain_on_overflow */
636 bfd_elf_generic_reloc, /* special_function */
637 "R_ARM_ROSEGREL32", /* name */
638 FALSE, /* partial_inplace */
639 0xffffffff, /* src_mask */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
642
643 HOWTO (R_ARM_V4BX, /* type */
644 0, /* rightshift */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
646 32, /* bitsize */
647 FALSE, /* pc_relative */
648 0, /* bitpos */
649 complain_overflow_dont,/* complain_on_overflow */
650 bfd_elf_generic_reloc, /* special_function */
651 "R_ARM_V4BX", /* name */
652 FALSE, /* partial_inplace */
653 0xffffffff, /* src_mask */
654 0xffffffff, /* dst_mask */
655 FALSE), /* pcrel_offset */
656
657 HOWTO (R_ARM_TARGET2, /* type */
658 0, /* rightshift */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
660 32, /* bitsize */
661 FALSE, /* pc_relative */
662 0, /* bitpos */
663 complain_overflow_signed,/* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_ARM_TARGET2", /* name */
666 FALSE, /* partial_inplace */
667 0xffffffff, /* src_mask */
668 0xffffffff, /* dst_mask */
669 TRUE), /* pcrel_offset */
670
671 HOWTO (R_ARM_PREL31, /* type */
672 0, /* rightshift */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
674 31, /* bitsize */
675 TRUE, /* pc_relative */
676 0, /* bitpos */
677 complain_overflow_signed,/* complain_on_overflow */
678 bfd_elf_generic_reloc, /* special_function */
679 "R_ARM_PREL31", /* name */
680 FALSE, /* partial_inplace */
681 0x7fffffff, /* src_mask */
682 0x7fffffff, /* dst_mask */
683 TRUE), /* pcrel_offset */
684
685 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
686 0, /* rightshift */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
688 16, /* bitsize */
689 FALSE, /* pc_relative */
690 0, /* bitpos */
691 complain_overflow_dont,/* complain_on_overflow */
692 bfd_elf_generic_reloc, /* special_function */
693 "R_ARM_MOVW_ABS_NC", /* name */
694 FALSE, /* partial_inplace */
695 0x000f0fff, /* src_mask */
696 0x000f0fff, /* dst_mask */
697 FALSE), /* pcrel_offset */
698
699 HOWTO (R_ARM_MOVT_ABS, /* type */
700 0, /* rightshift */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_bitfield,/* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 "R_ARM_MOVT_ABS", /* name */
708 FALSE, /* partial_inplace */
709 0x000f0fff, /* src_mask */
710 0x000f0fff, /* dst_mask */
711 FALSE), /* pcrel_offset */
712
713 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
714 0, /* rightshift */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
717 TRUE, /* pc_relative */
718 0, /* bitpos */
719 complain_overflow_dont,/* complain_on_overflow */
720 bfd_elf_generic_reloc, /* special_function */
721 "R_ARM_MOVW_PREL_NC", /* name */
722 FALSE, /* partial_inplace */
723 0x000f0fff, /* src_mask */
724 0x000f0fff, /* dst_mask */
725 TRUE), /* pcrel_offset */
726
727 HOWTO (R_ARM_MOVT_PREL, /* type */
728 0, /* rightshift */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
731 TRUE, /* pc_relative */
732 0, /* bitpos */
733 complain_overflow_bitfield,/* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_ARM_MOVT_PREL", /* name */
736 FALSE, /* partial_inplace */
737 0x000f0fff, /* src_mask */
738 0x000f0fff, /* dst_mask */
739 TRUE), /* pcrel_offset */
740
741 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
742 0, /* rightshift */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
744 16, /* bitsize */
745 FALSE, /* pc_relative */
746 0, /* bitpos */
747 complain_overflow_dont,/* complain_on_overflow */
748 bfd_elf_generic_reloc, /* special_function */
749 "R_ARM_THM_MOVW_ABS_NC",/* name */
750 FALSE, /* partial_inplace */
751 0x040f70ff, /* src_mask */
752 0x040f70ff, /* dst_mask */
753 FALSE), /* pcrel_offset */
754
755 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
756 0, /* rightshift */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
758 16, /* bitsize */
759 FALSE, /* pc_relative */
760 0, /* bitpos */
761 complain_overflow_bitfield,/* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
763 "R_ARM_THM_MOVT_ABS", /* name */
764 FALSE, /* partial_inplace */
765 0x040f70ff, /* src_mask */
766 0x040f70ff, /* dst_mask */
767 FALSE), /* pcrel_offset */
768
769 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
770 0, /* rightshift */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
772 16, /* bitsize */
773 TRUE, /* pc_relative */
774 0, /* bitpos */
775 complain_overflow_dont,/* complain_on_overflow */
776 bfd_elf_generic_reloc, /* special_function */
777 "R_ARM_THM_MOVW_PREL_NC",/* name */
778 FALSE, /* partial_inplace */
779 0x040f70ff, /* src_mask */
780 0x040f70ff, /* dst_mask */
781 TRUE), /* pcrel_offset */
782
783 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
784 0, /* rightshift */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
786 16, /* bitsize */
787 TRUE, /* pc_relative */
788 0, /* bitpos */
789 complain_overflow_bitfield,/* complain_on_overflow */
790 bfd_elf_generic_reloc, /* special_function */
791 "R_ARM_THM_MOVT_PREL", /* name */
792 FALSE, /* partial_inplace */
793 0x040f70ff, /* src_mask */
794 0x040f70ff, /* dst_mask */
795 TRUE), /* pcrel_offset */
796
797 HOWTO (R_ARM_THM_JUMP19, /* type */
798 1, /* rightshift */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
800 19, /* bitsize */
801 TRUE, /* pc_relative */
802 0, /* bitpos */
803 complain_overflow_signed,/* complain_on_overflow */
804 bfd_elf_generic_reloc, /* special_function */
805 "R_ARM_THM_JUMP19", /* name */
806 FALSE, /* partial_inplace */
807 0x043f2fff, /* src_mask */
808 0x043f2fff, /* dst_mask */
809 TRUE), /* pcrel_offset */
810
811 HOWTO (R_ARM_THM_JUMP6, /* type */
812 1, /* rightshift */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
814 6, /* bitsize */
815 TRUE, /* pc_relative */
816 0, /* bitpos */
817 complain_overflow_unsigned,/* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_ARM_THM_JUMP6", /* name */
820 FALSE, /* partial_inplace */
821 0x02f8, /* src_mask */
822 0x02f8, /* dst_mask */
823 TRUE), /* pcrel_offset */
824
825 /* These are declared as 13-bit signed relocations because we can
826 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
827 versa. */
828 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
829 0, /* rightshift */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
831 13, /* bitsize */
832 TRUE, /* pc_relative */
833 0, /* bitpos */
834 complain_overflow_dont,/* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_ARM_THM_ALU_PREL_11_0",/* name */
837 FALSE, /* partial_inplace */
838 0xffffffff, /* src_mask */
839 0xffffffff, /* dst_mask */
840 TRUE), /* pcrel_offset */
841
842 HOWTO (R_ARM_THM_PC12, /* type */
843 0, /* rightshift */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
845 13, /* bitsize */
846 TRUE, /* pc_relative */
847 0, /* bitpos */
848 complain_overflow_dont,/* complain_on_overflow */
849 bfd_elf_generic_reloc, /* special_function */
850 "R_ARM_THM_PC12", /* name */
851 FALSE, /* partial_inplace */
852 0xffffffff, /* src_mask */
853 0xffffffff, /* dst_mask */
854 TRUE), /* pcrel_offset */
855
856 HOWTO (R_ARM_ABS32_NOI, /* type */
857 0, /* rightshift */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
859 32, /* bitsize */
860 FALSE, /* pc_relative */
861 0, /* bitpos */
862 complain_overflow_dont,/* complain_on_overflow */
863 bfd_elf_generic_reloc, /* special_function */
864 "R_ARM_ABS32_NOI", /* name */
865 FALSE, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
869
870 HOWTO (R_ARM_REL32_NOI, /* type */
871 0, /* rightshift */
872 2, /* size (0 = byte, 1 = short, 2 = long) */
873 32, /* bitsize */
874 TRUE, /* pc_relative */
875 0, /* bitpos */
876 complain_overflow_dont,/* complain_on_overflow */
877 bfd_elf_generic_reloc, /* special_function */
878 "R_ARM_REL32_NOI", /* name */
879 FALSE, /* partial_inplace */
880 0xffffffff, /* src_mask */
881 0xffffffff, /* dst_mask */
882 FALSE), /* pcrel_offset */
883
884 /* Group relocations. */
885
886 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
887 0, /* rightshift */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
889 32, /* bitsize */
890 TRUE, /* pc_relative */
891 0, /* bitpos */
892 complain_overflow_dont,/* complain_on_overflow */
893 bfd_elf_generic_reloc, /* special_function */
894 "R_ARM_ALU_PC_G0_NC", /* name */
895 FALSE, /* partial_inplace */
896 0xffffffff, /* src_mask */
897 0xffffffff, /* dst_mask */
898 TRUE), /* pcrel_offset */
899
900 HOWTO (R_ARM_ALU_PC_G0, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 32, /* bitsize */
904 TRUE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_dont,/* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_ARM_ALU_PC_G0", /* name */
909 FALSE, /* partial_inplace */
910 0xffffffff, /* src_mask */
911 0xffffffff, /* dst_mask */
912 TRUE), /* pcrel_offset */
913
914 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
915 0, /* rightshift */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
917 32, /* bitsize */
918 TRUE, /* pc_relative */
919 0, /* bitpos */
920 complain_overflow_dont,/* complain_on_overflow */
921 bfd_elf_generic_reloc, /* special_function */
922 "R_ARM_ALU_PC_G1_NC", /* name */
923 FALSE, /* partial_inplace */
924 0xffffffff, /* src_mask */
925 0xffffffff, /* dst_mask */
926 TRUE), /* pcrel_offset */
927
928 HOWTO (R_ARM_ALU_PC_G1, /* type */
929 0, /* rightshift */
930 2, /* size (0 = byte, 1 = short, 2 = long) */
931 32, /* bitsize */
932 TRUE, /* pc_relative */
933 0, /* bitpos */
934 complain_overflow_dont,/* complain_on_overflow */
935 bfd_elf_generic_reloc, /* special_function */
936 "R_ARM_ALU_PC_G1", /* name */
937 FALSE, /* partial_inplace */
938 0xffffffff, /* src_mask */
939 0xffffffff, /* dst_mask */
940 TRUE), /* pcrel_offset */
941
942 HOWTO (R_ARM_ALU_PC_G2, /* type */
943 0, /* rightshift */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
945 32, /* bitsize */
946 TRUE, /* pc_relative */
947 0, /* bitpos */
948 complain_overflow_dont,/* complain_on_overflow */
949 bfd_elf_generic_reloc, /* special_function */
950 "R_ARM_ALU_PC_G2", /* name */
951 FALSE, /* partial_inplace */
952 0xffffffff, /* src_mask */
953 0xffffffff, /* dst_mask */
954 TRUE), /* pcrel_offset */
955
956 HOWTO (R_ARM_LDR_PC_G1, /* type */
957 0, /* rightshift */
958 2, /* size (0 = byte, 1 = short, 2 = long) */
959 32, /* bitsize */
960 TRUE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont,/* complain_on_overflow */
963 bfd_elf_generic_reloc, /* special_function */
964 "R_ARM_LDR_PC_G1", /* name */
965 FALSE, /* partial_inplace */
966 0xffffffff, /* src_mask */
967 0xffffffff, /* dst_mask */
968 TRUE), /* pcrel_offset */
969
970 HOWTO (R_ARM_LDR_PC_G2, /* type */
971 0, /* rightshift */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
973 32, /* bitsize */
974 TRUE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_dont,/* complain_on_overflow */
977 bfd_elf_generic_reloc, /* special_function */
978 "R_ARM_LDR_PC_G2", /* name */
979 FALSE, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 TRUE), /* pcrel_offset */
983
984 HOWTO (R_ARM_LDRS_PC_G0, /* type */
985 0, /* rightshift */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
987 32, /* bitsize */
988 TRUE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_dont,/* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
992 "R_ARM_LDRS_PC_G0", /* name */
993 FALSE, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 TRUE), /* pcrel_offset */
997
998 HOWTO (R_ARM_LDRS_PC_G1, /* type */
999 0, /* rightshift */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 32, /* bitsize */
1002 TRUE, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_dont,/* complain_on_overflow */
1005 bfd_elf_generic_reloc, /* special_function */
1006 "R_ARM_LDRS_PC_G1", /* name */
1007 FALSE, /* partial_inplace */
1008 0xffffffff, /* src_mask */
1009 0xffffffff, /* dst_mask */
1010 TRUE), /* pcrel_offset */
1011
1012 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1013 0, /* rightshift */
1014 2, /* size (0 = byte, 1 = short, 2 = long) */
1015 32, /* bitsize */
1016 TRUE, /* pc_relative */
1017 0, /* bitpos */
1018 complain_overflow_dont,/* complain_on_overflow */
1019 bfd_elf_generic_reloc, /* special_function */
1020 "R_ARM_LDRS_PC_G2", /* name */
1021 FALSE, /* partial_inplace */
1022 0xffffffff, /* src_mask */
1023 0xffffffff, /* dst_mask */
1024 TRUE), /* pcrel_offset */
1025
1026 HOWTO (R_ARM_LDC_PC_G0, /* type */
1027 0, /* rightshift */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1029 32, /* bitsize */
1030 TRUE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont,/* complain_on_overflow */
1033 bfd_elf_generic_reloc, /* special_function */
1034 "R_ARM_LDC_PC_G0", /* name */
1035 FALSE, /* partial_inplace */
1036 0xffffffff, /* src_mask */
1037 0xffffffff, /* dst_mask */
1038 TRUE), /* pcrel_offset */
1039
1040 HOWTO (R_ARM_LDC_PC_G1, /* type */
1041 0, /* rightshift */
1042 2, /* size (0 = byte, 1 = short, 2 = long) */
1043 32, /* bitsize */
1044 TRUE, /* pc_relative */
1045 0, /* bitpos */
1046 complain_overflow_dont,/* complain_on_overflow */
1047 bfd_elf_generic_reloc, /* special_function */
1048 "R_ARM_LDC_PC_G1", /* name */
1049 FALSE, /* partial_inplace */
1050 0xffffffff, /* src_mask */
1051 0xffffffff, /* dst_mask */
1052 TRUE), /* pcrel_offset */
1053
1054 HOWTO (R_ARM_LDC_PC_G2, /* type */
1055 0, /* rightshift */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1057 32, /* bitsize */
1058 TRUE, /* pc_relative */
1059 0, /* bitpos */
1060 complain_overflow_dont,/* complain_on_overflow */
1061 bfd_elf_generic_reloc, /* special_function */
1062 "R_ARM_LDC_PC_G2", /* name */
1063 FALSE, /* partial_inplace */
1064 0xffffffff, /* src_mask */
1065 0xffffffff, /* dst_mask */
1066 TRUE), /* pcrel_offset */
1067
1068 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1069 0, /* rightshift */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1071 32, /* bitsize */
1072 TRUE, /* pc_relative */
1073 0, /* bitpos */
1074 complain_overflow_dont,/* complain_on_overflow */
1075 bfd_elf_generic_reloc, /* special_function */
1076 "R_ARM_ALU_SB_G0_NC", /* name */
1077 FALSE, /* partial_inplace */
1078 0xffffffff, /* src_mask */
1079 0xffffffff, /* dst_mask */
1080 TRUE), /* pcrel_offset */
1081
1082 HOWTO (R_ARM_ALU_SB_G0, /* type */
1083 0, /* rightshift */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1085 32, /* bitsize */
1086 TRUE, /* pc_relative */
1087 0, /* bitpos */
1088 complain_overflow_dont,/* complain_on_overflow */
1089 bfd_elf_generic_reloc, /* special_function */
1090 "R_ARM_ALU_SB_G0", /* name */
1091 FALSE, /* partial_inplace */
1092 0xffffffff, /* src_mask */
1093 0xffffffff, /* dst_mask */
1094 TRUE), /* pcrel_offset */
1095
1096 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1097 0, /* rightshift */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 32, /* bitsize */
1100 TRUE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_dont,/* complain_on_overflow */
1103 bfd_elf_generic_reloc, /* special_function */
1104 "R_ARM_ALU_SB_G1_NC", /* name */
1105 FALSE, /* partial_inplace */
1106 0xffffffff, /* src_mask */
1107 0xffffffff, /* dst_mask */
1108 TRUE), /* pcrel_offset */
1109
1110 HOWTO (R_ARM_ALU_SB_G1, /* type */
1111 0, /* rightshift */
1112 2, /* size (0 = byte, 1 = short, 2 = long) */
1113 32, /* bitsize */
1114 TRUE, /* pc_relative */
1115 0, /* bitpos */
1116 complain_overflow_dont,/* complain_on_overflow */
1117 bfd_elf_generic_reloc, /* special_function */
1118 "R_ARM_ALU_SB_G1", /* name */
1119 FALSE, /* partial_inplace */
1120 0xffffffff, /* src_mask */
1121 0xffffffff, /* dst_mask */
1122 TRUE), /* pcrel_offset */
1123
1124 HOWTO (R_ARM_ALU_SB_G2, /* type */
1125 0, /* rightshift */
1126 2, /* size (0 = byte, 1 = short, 2 = long) */
1127 32, /* bitsize */
1128 TRUE, /* pc_relative */
1129 0, /* bitpos */
1130 complain_overflow_dont,/* complain_on_overflow */
1131 bfd_elf_generic_reloc, /* special_function */
1132 "R_ARM_ALU_SB_G2", /* name */
1133 FALSE, /* partial_inplace */
1134 0xffffffff, /* src_mask */
1135 0xffffffff, /* dst_mask */
1136 TRUE), /* pcrel_offset */
1137
1138 HOWTO (R_ARM_LDR_SB_G0, /* type */
1139 0, /* rightshift */
1140 2, /* size (0 = byte, 1 = short, 2 = long) */
1141 32, /* bitsize */
1142 TRUE, /* pc_relative */
1143 0, /* bitpos */
1144 complain_overflow_dont,/* complain_on_overflow */
1145 bfd_elf_generic_reloc, /* special_function */
1146 "R_ARM_LDR_SB_G0", /* name */
1147 FALSE, /* partial_inplace */
1148 0xffffffff, /* src_mask */
1149 0xffffffff, /* dst_mask */
1150 TRUE), /* pcrel_offset */
1151
1152 HOWTO (R_ARM_LDR_SB_G1, /* type */
1153 0, /* rightshift */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1155 32, /* bitsize */
1156 TRUE, /* pc_relative */
1157 0, /* bitpos */
1158 complain_overflow_dont,/* complain_on_overflow */
1159 bfd_elf_generic_reloc, /* special_function */
1160 "R_ARM_LDR_SB_G1", /* name */
1161 FALSE, /* partial_inplace */
1162 0xffffffff, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 TRUE), /* pcrel_offset */
1165
1166 HOWTO (R_ARM_LDR_SB_G2, /* type */
1167 0, /* rightshift */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1169 32, /* bitsize */
1170 TRUE, /* pc_relative */
1171 0, /* bitpos */
1172 complain_overflow_dont,/* complain_on_overflow */
1173 bfd_elf_generic_reloc, /* special_function */
1174 "R_ARM_LDR_SB_G2", /* name */
1175 FALSE, /* partial_inplace */
1176 0xffffffff, /* src_mask */
1177 0xffffffff, /* dst_mask */
1178 TRUE), /* pcrel_offset */
1179
1180 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1181 0, /* rightshift */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1183 32, /* bitsize */
1184 TRUE, /* pc_relative */
1185 0, /* bitpos */
1186 complain_overflow_dont,/* complain_on_overflow */
1187 bfd_elf_generic_reloc, /* special_function */
1188 "R_ARM_LDRS_SB_G0", /* name */
1189 FALSE, /* partial_inplace */
1190 0xffffffff, /* src_mask */
1191 0xffffffff, /* dst_mask */
1192 TRUE), /* pcrel_offset */
1193
1194 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1195 0, /* rightshift */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1197 32, /* bitsize */
1198 TRUE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_dont,/* complain_on_overflow */
1201 bfd_elf_generic_reloc, /* special_function */
1202 "R_ARM_LDRS_SB_G1", /* name */
1203 FALSE, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 TRUE), /* pcrel_offset */
1207
1208 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1209 0, /* rightshift */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1211 32, /* bitsize */
1212 TRUE, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_dont,/* complain_on_overflow */
1215 bfd_elf_generic_reloc, /* special_function */
1216 "R_ARM_LDRS_SB_G2", /* name */
1217 FALSE, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 TRUE), /* pcrel_offset */
1221
1222 HOWTO (R_ARM_LDC_SB_G0, /* type */
1223 0, /* rightshift */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1225 32, /* bitsize */
1226 TRUE, /* pc_relative */
1227 0, /* bitpos */
1228 complain_overflow_dont,/* complain_on_overflow */
1229 bfd_elf_generic_reloc, /* special_function */
1230 "R_ARM_LDC_SB_G0", /* name */
1231 FALSE, /* partial_inplace */
1232 0xffffffff, /* src_mask */
1233 0xffffffff, /* dst_mask */
1234 TRUE), /* pcrel_offset */
1235
1236 HOWTO (R_ARM_LDC_SB_G1, /* type */
1237 0, /* rightshift */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 32, /* bitsize */
1240 TRUE, /* pc_relative */
1241 0, /* bitpos */
1242 complain_overflow_dont,/* complain_on_overflow */
1243 bfd_elf_generic_reloc, /* special_function */
1244 "R_ARM_LDC_SB_G1", /* name */
1245 FALSE, /* partial_inplace */
1246 0xffffffff, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 TRUE), /* pcrel_offset */
1249
1250 HOWTO (R_ARM_LDC_SB_G2, /* type */
1251 0, /* rightshift */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1253 32, /* bitsize */
1254 TRUE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_dont,/* complain_on_overflow */
1257 bfd_elf_generic_reloc, /* special_function */
1258 "R_ARM_LDC_SB_G2", /* name */
1259 FALSE, /* partial_inplace */
1260 0xffffffff, /* src_mask */
1261 0xffffffff, /* dst_mask */
1262 TRUE), /* pcrel_offset */
1263
1264 /* End of group relocations. */
1265
1266 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1267 0, /* rightshift */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 16, /* bitsize */
1270 FALSE, /* pc_relative */
1271 0, /* bitpos */
1272 complain_overflow_dont,/* complain_on_overflow */
1273 bfd_elf_generic_reloc, /* special_function */
1274 "R_ARM_MOVW_BREL_NC", /* name */
1275 FALSE, /* partial_inplace */
1276 0x0000ffff, /* src_mask */
1277 0x0000ffff, /* dst_mask */
1278 FALSE), /* pcrel_offset */
1279
1280 HOWTO (R_ARM_MOVT_BREL, /* type */
1281 0, /* rightshift */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_bitfield,/* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_ARM_MOVT_BREL", /* name */
1289 FALSE, /* partial_inplace */
1290 0x0000ffff, /* src_mask */
1291 0x0000ffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 HOWTO (R_ARM_MOVW_BREL, /* type */
1295 0, /* rightshift */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 16, /* bitsize */
1298 FALSE, /* pc_relative */
1299 0, /* bitpos */
1300 complain_overflow_dont,/* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_ARM_MOVW_BREL", /* name */
1303 FALSE, /* partial_inplace */
1304 0x0000ffff, /* src_mask */
1305 0x0000ffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1307
1308 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1309 0, /* rightshift */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 16, /* bitsize */
1312 FALSE, /* pc_relative */
1313 0, /* bitpos */
1314 complain_overflow_dont,/* complain_on_overflow */
1315 bfd_elf_generic_reloc, /* special_function */
1316 "R_ARM_THM_MOVW_BREL_NC",/* name */
1317 FALSE, /* partial_inplace */
1318 0x040f70ff, /* src_mask */
1319 0x040f70ff, /* dst_mask */
1320 FALSE), /* pcrel_offset */
1321
1322 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1323 0, /* rightshift */
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 16, /* bitsize */
1326 FALSE, /* pc_relative */
1327 0, /* bitpos */
1328 complain_overflow_bitfield,/* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_ARM_THM_MOVT_BREL", /* name */
1331 FALSE, /* partial_inplace */
1332 0x040f70ff, /* src_mask */
1333 0x040f70ff, /* dst_mask */
1334 FALSE), /* pcrel_offset */
1335
1336 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1337 0, /* rightshift */
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1339 16, /* bitsize */
1340 FALSE, /* pc_relative */
1341 0, /* bitpos */
1342 complain_overflow_dont,/* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_ARM_THM_MOVW_BREL", /* name */
1345 FALSE, /* partial_inplace */
1346 0x040f70ff, /* src_mask */
1347 0x040f70ff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1349
1350 EMPTY_HOWTO (90), /* Unallocated. */
1351 EMPTY_HOWTO (91),
1352 EMPTY_HOWTO (92),
1353 EMPTY_HOWTO (93),
1354
1355 HOWTO (R_ARM_PLT32_ABS, /* type */
1356 0, /* rightshift */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1358 32, /* bitsize */
1359 FALSE, /* pc_relative */
1360 0, /* bitpos */
1361 complain_overflow_dont,/* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 "R_ARM_PLT32_ABS", /* name */
1364 FALSE, /* partial_inplace */
1365 0xffffffff, /* src_mask */
1366 0xffffffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1368
1369 HOWTO (R_ARM_GOT_ABS, /* type */
1370 0, /* rightshift */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1372 32, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_dont,/* complain_on_overflow */
1376 bfd_elf_generic_reloc, /* special_function */
1377 "R_ARM_GOT_ABS", /* name */
1378 FALSE, /* partial_inplace */
1379 0xffffffff, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 HOWTO (R_ARM_GOT_PREL, /* type */
1384 0, /* rightshift */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1386 32, /* bitsize */
1387 TRUE, /* pc_relative */
1388 0, /* bitpos */
1389 complain_overflow_dont, /* complain_on_overflow */
1390 bfd_elf_generic_reloc, /* special_function */
1391 "R_ARM_GOT_PREL", /* name */
1392 FALSE, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 TRUE), /* pcrel_offset */
1396
1397 HOWTO (R_ARM_GOT_BREL12, /* type */
1398 0, /* rightshift */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1400 12, /* bitsize */
1401 FALSE, /* pc_relative */
1402 0, /* bitpos */
1403 complain_overflow_bitfield,/* complain_on_overflow */
1404 bfd_elf_generic_reloc, /* special_function */
1405 "R_ARM_GOT_BREL12", /* name */
1406 FALSE, /* partial_inplace */
1407 0x00000fff, /* src_mask */
1408 0x00000fff, /* dst_mask */
1409 FALSE), /* pcrel_offset */
1410
1411 HOWTO (R_ARM_GOTOFF12, /* type */
1412 0, /* rightshift */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1414 12, /* bitsize */
1415 FALSE, /* pc_relative */
1416 0, /* bitpos */
1417 complain_overflow_bitfield,/* complain_on_overflow */
1418 bfd_elf_generic_reloc, /* special_function */
1419 "R_ARM_GOTOFF12", /* name */
1420 FALSE, /* partial_inplace */
1421 0x00000fff, /* src_mask */
1422 0x00000fff, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424
1425 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1426
1427 /* GNU extension to record C++ vtable member usage */
1428 HOWTO (R_ARM_GNU_VTENTRY, /* type */
1429 0, /* rightshift */
1430 2, /* size (0 = byte, 1 = short, 2 = long) */
1431 0, /* bitsize */
1432 FALSE, /* pc_relative */
1433 0, /* bitpos */
1434 complain_overflow_dont, /* complain_on_overflow */
1435 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1436 "R_ARM_GNU_VTENTRY", /* name */
1437 FALSE, /* partial_inplace */
1438 0, /* src_mask */
1439 0, /* dst_mask */
1440 FALSE), /* pcrel_offset */
1441
1442 /* GNU extension to record C++ vtable hierarchy */
1443 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1444 0, /* rightshift */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1446 0, /* bitsize */
1447 FALSE, /* pc_relative */
1448 0, /* bitpos */
1449 complain_overflow_dont, /* complain_on_overflow */
1450 NULL, /* special_function */
1451 "R_ARM_GNU_VTINHERIT", /* name */
1452 FALSE, /* partial_inplace */
1453 0, /* src_mask */
1454 0, /* dst_mask */
1455 FALSE), /* pcrel_offset */
1456
1457 HOWTO (R_ARM_THM_JUMP11, /* type */
1458 1, /* rightshift */
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1460 11, /* bitsize */
1461 TRUE, /* pc_relative */
1462 0, /* bitpos */
1463 complain_overflow_signed, /* complain_on_overflow */
1464 bfd_elf_generic_reloc, /* special_function */
1465 "R_ARM_THM_JUMP11", /* name */
1466 FALSE, /* partial_inplace */
1467 0x000007ff, /* src_mask */
1468 0x000007ff, /* dst_mask */
1469 TRUE), /* pcrel_offset */
1470
1471 HOWTO (R_ARM_THM_JUMP8, /* type */
1472 1, /* rightshift */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 8, /* bitsize */
1475 TRUE, /* pc_relative */
1476 0, /* bitpos */
1477 complain_overflow_signed, /* complain_on_overflow */
1478 bfd_elf_generic_reloc, /* special_function */
1479 "R_ARM_THM_JUMP8", /* name */
1480 FALSE, /* partial_inplace */
1481 0x000000ff, /* src_mask */
1482 0x000000ff, /* dst_mask */
1483 TRUE), /* pcrel_offset */
1484
1485 /* TLS relocations */
1486 HOWTO (R_ARM_TLS_GD32, /* type */
1487 0, /* rightshift */
1488 2, /* size (0 = byte, 1 = short, 2 = long) */
1489 32, /* bitsize */
1490 FALSE, /* pc_relative */
1491 0, /* bitpos */
1492 complain_overflow_bitfield,/* complain_on_overflow */
1493 NULL, /* special_function */
1494 "R_ARM_TLS_GD32", /* name */
1495 TRUE, /* partial_inplace */
1496 0xffffffff, /* src_mask */
1497 0xffffffff, /* dst_mask */
1498 FALSE), /* pcrel_offset */
1499
1500 HOWTO (R_ARM_TLS_LDM32, /* type */
1501 0, /* rightshift */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1503 32, /* bitsize */
1504 FALSE, /* pc_relative */
1505 0, /* bitpos */
1506 complain_overflow_bitfield,/* complain_on_overflow */
1507 bfd_elf_generic_reloc, /* special_function */
1508 "R_ARM_TLS_LDM32", /* name */
1509 TRUE, /* partial_inplace */
1510 0xffffffff, /* src_mask */
1511 0xffffffff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1513
1514 HOWTO (R_ARM_TLS_LDO32, /* type */
1515 0, /* rightshift */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 32, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_bitfield,/* complain_on_overflow */
1521 bfd_elf_generic_reloc, /* special_function */
1522 "R_ARM_TLS_LDO32", /* name */
1523 TRUE, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527
1528 HOWTO (R_ARM_TLS_IE32, /* type */
1529 0, /* rightshift */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1531 32, /* bitsize */
1532 FALSE, /* pc_relative */
1533 0, /* bitpos */
1534 complain_overflow_bitfield,/* complain_on_overflow */
1535 NULL, /* special_function */
1536 "R_ARM_TLS_IE32", /* name */
1537 TRUE, /* partial_inplace */
1538 0xffffffff, /* src_mask */
1539 0xffffffff, /* dst_mask */
1540 FALSE), /* pcrel_offset */
1541
1542 HOWTO (R_ARM_TLS_LE32, /* type */
1543 0, /* rightshift */
1544 2, /* size (0 = byte, 1 = short, 2 = long) */
1545 32, /* bitsize */
1546 FALSE, /* pc_relative */
1547 0, /* bitpos */
1548 complain_overflow_bitfield,/* complain_on_overflow */
1549 bfd_elf_generic_reloc, /* special_function */
1550 "R_ARM_TLS_LE32", /* name */
1551 TRUE, /* partial_inplace */
1552 0xffffffff, /* src_mask */
1553 0xffffffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
1555
1556 HOWTO (R_ARM_TLS_LDO12, /* type */
1557 0, /* rightshift */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 12, /* bitsize */
1560 FALSE, /* pc_relative */
1561 0, /* bitpos */
1562 complain_overflow_bitfield,/* complain_on_overflow */
1563 bfd_elf_generic_reloc, /* special_function */
1564 "R_ARM_TLS_LDO12", /* name */
1565 FALSE, /* partial_inplace */
1566 0x00000fff, /* src_mask */
1567 0x00000fff, /* dst_mask */
1568 FALSE), /* pcrel_offset */
1569
1570 HOWTO (R_ARM_TLS_LE12, /* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 12, /* bitsize */
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_bitfield,/* complain_on_overflow */
1577 bfd_elf_generic_reloc, /* special_function */
1578 "R_ARM_TLS_LE12", /* name */
1579 FALSE, /* partial_inplace */
1580 0x00000fff, /* src_mask */
1581 0x00000fff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1583
1584 HOWTO (R_ARM_TLS_IE12GP, /* type */
1585 0, /* rightshift */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1587 12, /* bitsize */
1588 FALSE, /* pc_relative */
1589 0, /* bitpos */
1590 complain_overflow_bitfield,/* complain_on_overflow */
1591 bfd_elf_generic_reloc, /* special_function */
1592 "R_ARM_TLS_IE12GP", /* name */
1593 FALSE, /* partial_inplace */
1594 0x00000fff, /* src_mask */
1595 0x00000fff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597 };
1598
1599 /* 112-127 private relocations
1600 128 R_ARM_ME_TOO, obsolete
1601 129-255 unallocated in AAELF.
1602
1603 249-255 extended, currently unused, relocations: */
1604
1605 static reloc_howto_type elf32_arm_howto_table_2[4] =
1606 {
1607 HOWTO (R_ARM_RREL32, /* type */
1608 0, /* rightshift */
1609 0, /* size (0 = byte, 1 = short, 2 = long) */
1610 0, /* bitsize */
1611 FALSE, /* pc_relative */
1612 0, /* bitpos */
1613 complain_overflow_dont,/* complain_on_overflow */
1614 bfd_elf_generic_reloc, /* special_function */
1615 "R_ARM_RREL32", /* name */
1616 FALSE, /* partial_inplace */
1617 0, /* src_mask */
1618 0, /* dst_mask */
1619 FALSE), /* pcrel_offset */
1620
1621 HOWTO (R_ARM_RABS32, /* type */
1622 0, /* rightshift */
1623 0, /* size (0 = byte, 1 = short, 2 = long) */
1624 0, /* bitsize */
1625 FALSE, /* pc_relative */
1626 0, /* bitpos */
1627 complain_overflow_dont,/* complain_on_overflow */
1628 bfd_elf_generic_reloc, /* special_function */
1629 "R_ARM_RABS32", /* name */
1630 FALSE, /* partial_inplace */
1631 0, /* src_mask */
1632 0, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1634
1635 HOWTO (R_ARM_RPC24, /* type */
1636 0, /* rightshift */
1637 0, /* size (0 = byte, 1 = short, 2 = long) */
1638 0, /* bitsize */
1639 FALSE, /* pc_relative */
1640 0, /* bitpos */
1641 complain_overflow_dont,/* complain_on_overflow */
1642 bfd_elf_generic_reloc, /* special_function */
1643 "R_ARM_RPC24", /* name */
1644 FALSE, /* partial_inplace */
1645 0, /* src_mask */
1646 0, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1648
1649 HOWTO (R_ARM_RBASE, /* type */
1650 0, /* rightshift */
1651 0, /* size (0 = byte, 1 = short, 2 = long) */
1652 0, /* bitsize */
1653 FALSE, /* pc_relative */
1654 0, /* bitpos */
1655 complain_overflow_dont,/* complain_on_overflow */
1656 bfd_elf_generic_reloc, /* special_function */
1657 "R_ARM_RBASE", /* name */
1658 FALSE, /* partial_inplace */
1659 0, /* src_mask */
1660 0, /* dst_mask */
1661 FALSE) /* pcrel_offset */
1662 };
1663
1664 static reloc_howto_type *
1665 elf32_arm_howto_from_type (unsigned int r_type)
1666 {
1667 if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1))
1668 return &elf32_arm_howto_table_1[r_type];
1669
1670 if (r_type >= R_ARM_RREL32
1671 && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_2))
1672 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
1673
1674 return NULL;
1675 }
1676
1677 static void
1678 elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1679 Elf_Internal_Rela * elf_reloc)
1680 {
1681 unsigned int r_type;
1682
1683 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1684 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1685 }
1686
1687 struct elf32_arm_reloc_map
1688 {
1689 bfd_reloc_code_real_type bfd_reloc_val;
1690 unsigned char elf_reloc_val;
1691 };
1692
1693 /* All entries in this list must also be present in elf32_arm_howto_table. */
1694 static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1695 {
1696 {BFD_RELOC_NONE, R_ARM_NONE},
1697 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
1698 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1699 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
1700 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1701 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1702 {BFD_RELOC_32, R_ARM_ABS32},
1703 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1704 {BFD_RELOC_8, R_ARM_ABS8},
1705 {BFD_RELOC_16, R_ARM_ABS16},
1706 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1707 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
1708 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1709 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1710 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
1714 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1715 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1716 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
1717 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
1718 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1719 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1720 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1721 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1722 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1723 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1724 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
1725 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1726 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1727 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1728 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1729 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1730 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1731 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1732 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1733 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1734 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
1735 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1736 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
1737 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1738 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1739 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1740 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1741 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1742 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1743 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1744 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
1745 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1746 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1747 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1748 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1749 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1750 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1751 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1752 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1753 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1754 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1755 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1756 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1757 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1758 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1759 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1760 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1761 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1762 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1763 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1764 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1765 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1766 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1767 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1768 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1769 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1770 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1771 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
1772 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
1773 {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
1774 };
1775
1776 static reloc_howto_type *
1777 elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1778 bfd_reloc_code_real_type code)
1779 {
1780 unsigned int i;
1781
1782 for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++)
1783 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1784 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
1785
1786 return NULL;
1787 }
1788
1789 static reloc_howto_type *
1790 elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1791 const char *r_name)
1792 {
1793 unsigned int i;
1794
1795 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++)
1796 if (elf32_arm_howto_table_1[i].name != NULL
1797 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1798 return &elf32_arm_howto_table_1[i];
1799
1800 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++)
1801 if (elf32_arm_howto_table_2[i].name != NULL
1802 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1803 return &elf32_arm_howto_table_2[i];
1804
1805 return NULL;
1806 }
1807
1808 /* Support for core dump NOTE sections. */
1809
1810 static bfd_boolean
1811 elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1812 {
1813 int offset;
1814 size_t size;
1815
1816 switch (note->descsz)
1817 {
1818 default:
1819 return FALSE;
1820
1821 case 148: /* Linux/ARM 32-bit. */
1822 /* pr_cursig */
1823 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1824
1825 /* pr_pid */
1826 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1827
1828 /* pr_reg */
1829 offset = 72;
1830 size = 72;
1831
1832 break;
1833 }
1834
1835 /* Make a ".reg/999" section. */
1836 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1837 size, note->descpos + offset);
1838 }
1839
1840 static bfd_boolean
1841 elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1842 {
1843 switch (note->descsz)
1844 {
1845 default:
1846 return FALSE;
1847
1848 case 124: /* Linux/ARM elf_prpsinfo. */
1849 elf_tdata (abfd)->core_program
1850 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1851 elf_tdata (abfd)->core_command
1852 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1853 }
1854
1855 /* Note that for some reason, a spurious space is tacked
1856 onto the end of the args in some (at least one anyway)
1857 implementations, so strip it off if it exists. */
1858 {
1859 char *command = elf_tdata (abfd)->core_command;
1860 int n = strlen (command);
1861
1862 if (0 < n && command[n - 1] == ' ')
1863 command[n - 1] = '\0';
1864 }
1865
1866 return TRUE;
1867 }
1868
1869 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1870 #define TARGET_LITTLE_NAME "elf32-littlearm"
1871 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1872 #define TARGET_BIG_NAME "elf32-bigarm"
1873
1874 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1875 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1876
1877 typedef unsigned long int insn32;
1878 typedef unsigned short int insn16;
1879
1880 /* In lieu of proper flags, assume all EABIv4 or later objects are
1881 interworkable. */
1882 #define INTERWORK_FLAG(abfd) \
1883 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1884 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1885
1886 /* The linker script knows the section names for placement.
1887 The entry_names are used to do simple name mangling on the stubs.
1888 Given a function name, and its type, the stub can be found. The
1889 name can be changed. The only requirement is the %s be present. */
1890 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1891 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1892
1893 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1894 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1895
1896 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1897 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1898
1899 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1900 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1901
1902 #define STUB_ENTRY_NAME "__%s_veneer"
1903
1904 /* The name of the dynamic interpreter. This is put in the .interp
1905 section. */
1906 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1907
1908 #ifdef FOUR_WORD_PLT
1909
1910 /* The first entry in a procedure linkage table looks like
1911 this. It is set up so that any shared library function that is
1912 called before the relocation has been set up calls the dynamic
1913 linker first. */
1914 static const bfd_vma elf32_arm_plt0_entry [] =
1915 {
1916 0xe52de004, /* str lr, [sp, #-4]! */
1917 0xe59fe010, /* ldr lr, [pc, #16] */
1918 0xe08fe00e, /* add lr, pc, lr */
1919 0xe5bef008, /* ldr pc, [lr, #8]! */
1920 };
1921
1922 /* Subsequent entries in a procedure linkage table look like
1923 this. */
1924 static const bfd_vma elf32_arm_plt_entry [] =
1925 {
1926 0xe28fc600, /* add ip, pc, #NN */
1927 0xe28cca00, /* add ip, ip, #NN */
1928 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1929 0x00000000, /* unused */
1930 };
1931
1932 #else
1933
1934 /* The first entry in a procedure linkage table looks like
1935 this. It is set up so that any shared library function that is
1936 called before the relocation has been set up calls the dynamic
1937 linker first. */
1938 static const bfd_vma elf32_arm_plt0_entry [] =
1939 {
1940 0xe52de004, /* str lr, [sp, #-4]! */
1941 0xe59fe004, /* ldr lr, [pc, #4] */
1942 0xe08fe00e, /* add lr, pc, lr */
1943 0xe5bef008, /* ldr pc, [lr, #8]! */
1944 0x00000000, /* &GOT[0] - . */
1945 };
1946
1947 /* Subsequent entries in a procedure linkage table look like
1948 this. */
1949 static const bfd_vma elf32_arm_plt_entry [] =
1950 {
1951 0xe28fc600, /* add ip, pc, #0xNN00000 */
1952 0xe28cca00, /* add ip, ip, #0xNN000 */
1953 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1954 };
1955
1956 #endif
1957
1958 /* The format of the first entry in the procedure linkage table
1959 for a VxWorks executable. */
1960 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1961 {
1962 0xe52dc008, /* str ip,[sp,#-8]! */
1963 0xe59fc000, /* ldr ip,[pc] */
1964 0xe59cf008, /* ldr pc,[ip,#8] */
1965 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1966 };
1967
1968 /* The format of subsequent entries in a VxWorks executable. */
1969 static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1970 {
1971 0xe59fc000, /* ldr ip,[pc] */
1972 0xe59cf000, /* ldr pc,[ip] */
1973 0x00000000, /* .long @got */
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xea000000, /* b _PLT */
1976 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1977 };
1978
1979 /* The format of entries in a VxWorks shared library. */
1980 static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1981 {
1982 0xe59fc000, /* ldr ip,[pc] */
1983 0xe79cf009, /* ldr pc,[ip,r9] */
1984 0x00000000, /* .long @got */
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe599f008, /* ldr pc,[r9,#8] */
1987 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1988 };
1989
1990 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1991 #define PLT_THUMB_STUB_SIZE 4
1992 static const bfd_vma elf32_arm_plt_thumb_stub [] =
1993 {
1994 0x4778, /* bx pc */
1995 0x46c0 /* nop */
1996 };
1997
1998 /* The entries in a PLT when using a DLL-based target with multiple
1999 address spaces. */
2000 static const bfd_vma elf32_arm_symbian_plt_entry [] =
2001 {
2002 0xe51ff004, /* ldr pc, [pc, #-4] */
2003 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2004 };
2005
2006 #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2007 #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2008 #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2009 #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2010 #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2011 #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2012
2013 static const bfd_vma arm_long_branch_stub[] =
2014 {
2015 0xe51ff004, /* ldr pc, [pc, #-4] */
2016 0x00000000, /* dcd R_ARM_ABS32(X) */
2017 };
2018
2019 static const bfd_vma arm_thumb_v4t_long_branch_stub[] =
2020 {
2021 0xe59fc000, /* ldr ip, [pc, #0] */
2022 0xe12fff1c, /* bx ip */
2023 0x00000000, /* dcd R_ARM_ABS32(X) */
2024 };
2025
2026 static const bfd_vma arm_thumb_thumb_long_branch_stub[] =
2027 {
2028 0x4e02b540, /* push {r6, lr} */
2029 /* ldr r6, [pc, #8] */
2030 0x473046fe, /* mov lr, pc */
2031 /* bx r6 */
2032 0xbf00bd40, /* pop {r6, pc} */
2033 /* nop */
2034 0x00000000, /* dcd R_ARM_ABS32(X) */
2035 };
2036
2037 static const bfd_vma arm_thumb_arm_v4t_long_branch_stub[] =
2038 {
2039 0x4e03b540, /* push {r6, lr} */
2040 /* ldr r6, [pc, #12] */
2041 0x473046fe, /* mov lr, pc */
2042 /* bx r6 */
2043 0xe8bd4040, /* pop {r6, pc} */
2044 0xe12fff1e, /* bx lr */
2045 0x00000000, /* dcd R_ARM_ABS32(X) */
2046 };
2047
2048 static const bfd_vma arm_thumb_arm_v4t_short_branch_stub[] =
2049 {
2050 0x46c04778, /* bx pc */
2051 /* nop */
2052 0xea000000, /* b (X) */
2053 };
2054
2055 static const bfd_vma arm_pic_long_branch_stub[] =
2056 {
2057 0xe59fc000, /* ldr r12, [pc] */
2058 0xe08ff00c, /* add pc, pc, ip */
2059 0x00000000, /* dcd R_ARM_REL32(X) */
2060 };
2061
2062 /* Section name for stubs is the associated section name plus this
2063 string. */
2064 #define STUB_SUFFIX ".stub"
2065
2066 enum elf32_arm_stub_type
2067 {
2068 arm_stub_none,
2069 arm_stub_long_branch,
2070 arm_thumb_v4t_stub_long_branch,
2071 arm_thumb_thumb_stub_long_branch,
2072 arm_thumb_arm_v4t_stub_long_branch,
2073 arm_thumb_arm_v4t_stub_short_branch,
2074 arm_stub_pic_long_branch,
2075 };
2076
2077 struct elf32_arm_stub_hash_entry
2078 {
2079 /* Base hash table entry structure. */
2080 struct bfd_hash_entry root;
2081
2082 /* The stub section. */
2083 asection *stub_sec;
2084
2085 /* Offset within stub_sec of the beginning of this stub. */
2086 bfd_vma stub_offset;
2087
2088 /* Given the symbol's value and its section we can determine its final
2089 value when building the stubs (so the stub knows where to jump). */
2090 bfd_vma target_value;
2091 asection *target_section;
2092
2093 enum elf32_arm_stub_type stub_type;
2094
2095 /* The symbol table entry, if any, that this was derived from. */
2096 struct elf32_arm_link_hash_entry *h;
2097
2098 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2099 unsigned char st_type;
2100
2101 /* Where this stub is being called from, or, in the case of combined
2102 stub sections, the first input section in the group. */
2103 asection *id_sec;
2104
2105 /* The name for the local symbol at the start of this stub. The
2106 stub name in the hash table has to be unique; this does not, so
2107 it can be friendlier. */
2108 char *output_name;
2109 };
2110
2111 /* Used to build a map of a section. This is required for mixed-endian
2112 code/data. */
2113
2114 typedef struct elf32_elf_section_map
2115 {
2116 bfd_vma vma;
2117 char type;
2118 }
2119 elf32_arm_section_map;
2120
2121 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2122
2123 typedef enum
2124 {
2125 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2126 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2127 VFP11_ERRATUM_ARM_VENEER,
2128 VFP11_ERRATUM_THUMB_VENEER
2129 }
2130 elf32_vfp11_erratum_type;
2131
2132 typedef struct elf32_vfp11_erratum_list
2133 {
2134 struct elf32_vfp11_erratum_list *next;
2135 bfd_vma vma;
2136 union
2137 {
2138 struct
2139 {
2140 struct elf32_vfp11_erratum_list *veneer;
2141 unsigned int vfp_insn;
2142 } b;
2143 struct
2144 {
2145 struct elf32_vfp11_erratum_list *branch;
2146 unsigned int id;
2147 } v;
2148 } u;
2149 elf32_vfp11_erratum_type type;
2150 }
2151 elf32_vfp11_erratum_list;
2152
2153 typedef struct _arm_elf_section_data
2154 {
2155 struct bfd_elf_section_data elf;
2156 unsigned int mapcount;
2157 unsigned int mapsize;
2158 elf32_arm_section_map *map;
2159 unsigned int erratumcount;
2160 elf32_vfp11_erratum_list *erratumlist;
2161 }
2162 _arm_elf_section_data;
2163
2164 #define elf32_arm_section_data(sec) \
2165 ((_arm_elf_section_data *) elf_section_data (sec))
2166
2167 /* The size of the thread control block. */
2168 #define TCB_SIZE 8
2169
2170 struct elf_arm_obj_tdata
2171 {
2172 struct elf_obj_tdata root;
2173
2174 /* tls_type for each local got entry. */
2175 char *local_got_tls_type;
2176
2177 /* Zero to warn when linking objects with incompatible enum sizes. */
2178 int no_enum_size_warning;
2179
2180 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2181 int no_wchar_size_warning;
2182 };
2183
2184 #define elf_arm_tdata(bfd) \
2185 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2186
2187 #define elf32_arm_local_got_tls_type(bfd) \
2188 (elf_arm_tdata (bfd)->local_got_tls_type)
2189
2190 #define is_arm_elf(bfd) \
2191 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2192 && elf_tdata (bfd) != NULL \
2193 && elf_object_id (bfd) == ARM_ELF_TDATA)
2194
2195 static bfd_boolean
2196 elf32_arm_mkobject (bfd *abfd)
2197 {
2198 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2199 ARM_ELF_TDATA);
2200 }
2201
2202 /* The ARM linker needs to keep track of the number of relocs that it
2203 decides to copy in check_relocs for each symbol. This is so that
2204 it can discard PC relative relocs if it doesn't need them when
2205 linking with -Bsymbolic. We store the information in a field
2206 extending the regular ELF linker hash table. */
2207
2208 /* This structure keeps track of the number of relocs we have copied
2209 for a given symbol. */
2210 struct elf32_arm_relocs_copied
2211 {
2212 /* Next section. */
2213 struct elf32_arm_relocs_copied * next;
2214 /* A section in dynobj. */
2215 asection * section;
2216 /* Number of relocs copied in this section. */
2217 bfd_size_type count;
2218 /* Number of PC-relative relocs copied in this section. */
2219 bfd_size_type pc_count;
2220 };
2221
2222 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2223
2224 /* Arm ELF linker hash entry. */
2225 struct elf32_arm_link_hash_entry
2226 {
2227 struct elf_link_hash_entry root;
2228
2229 /* Number of PC relative relocs copied for this symbol. */
2230 struct elf32_arm_relocs_copied * relocs_copied;
2231
2232 /* We reference count Thumb references to a PLT entry separately,
2233 so that we can emit the Thumb trampoline only if needed. */
2234 bfd_signed_vma plt_thumb_refcount;
2235
2236 /* Some references from Thumb code may be eliminated by BL->BLX
2237 conversion, so record them separately. */
2238 bfd_signed_vma plt_maybe_thumb_refcount;
2239
2240 /* Since PLT entries have variable size if the Thumb prologue is
2241 used, we need to record the index into .got.plt instead of
2242 recomputing it from the PLT offset. */
2243 bfd_signed_vma plt_got_offset;
2244
2245 #define GOT_UNKNOWN 0
2246 #define GOT_NORMAL 1
2247 #define GOT_TLS_GD 2
2248 #define GOT_TLS_IE 4
2249 unsigned char tls_type;
2250
2251 /* The symbol marking the real symbol location for exported thumb
2252 symbols with Arm stubs. */
2253 struct elf_link_hash_entry *export_glue;
2254
2255 /* A pointer to the most recently used stub hash entry against this
2256 symbol. */
2257 struct elf32_arm_stub_hash_entry *stub_cache;
2258 };
2259
2260 /* Traverse an arm ELF linker hash table. */
2261 #define elf32_arm_link_hash_traverse(table, func, info) \
2262 (elf_link_hash_traverse \
2263 (&(table)->root, \
2264 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2265 (info)))
2266
2267 /* Get the ARM elf linker hash table from a link_info structure. */
2268 #define elf32_arm_hash_table(info) \
2269 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2270
2271 #define arm_stub_hash_lookup(table, string, create, copy) \
2272 ((struct elf32_arm_stub_hash_entry *) \
2273 bfd_hash_lookup ((table), (string), (create), (copy)))
2274
2275 /* ARM ELF linker hash table. */
2276 struct elf32_arm_link_hash_table
2277 {
2278 /* The main hash table. */
2279 struct elf_link_hash_table root;
2280
2281 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2282 bfd_size_type thumb_glue_size;
2283
2284 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2285 bfd_size_type arm_glue_size;
2286
2287 /* The size in bytes of section containing the ARMv4 BX veneers. */
2288 bfd_size_type bx_glue_size;
2289
2290 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2291 veneer has been populated. */
2292 bfd_vma bx_glue_offset[15];
2293
2294 /* The size in bytes of the section containing glue for VFP11 erratum
2295 veneers. */
2296 bfd_size_type vfp11_erratum_glue_size;
2297
2298 /* An arbitrary input BFD chosen to hold the glue sections. */
2299 bfd * bfd_of_glue_owner;
2300
2301 /* Nonzero to output a BE8 image. */
2302 int byteswap_code;
2303
2304 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2305 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2306 int target1_is_rel;
2307
2308 /* The relocation to use for R_ARM_TARGET2 relocations. */
2309 int target2_reloc;
2310
2311 /* 0 = Ignore R_ARM_V4BX.
2312 1 = Convert BX to MOV PC.
2313 2 = Generate v4 interworing stubs. */
2314 int fix_v4bx;
2315
2316 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2317 int use_blx;
2318
2319 /* What sort of code sequences we should look for which may trigger the
2320 VFP11 denorm erratum. */
2321 bfd_arm_vfp11_fix vfp11_fix;
2322
2323 /* Global counter for the number of fixes we have emitted. */
2324 int num_vfp11_fixes;
2325
2326 /* Nonzero to force PIC branch veneers. */
2327 int pic_veneer;
2328
2329 /* The number of bytes in the initial entry in the PLT. */
2330 bfd_size_type plt_header_size;
2331
2332 /* The number of bytes in the subsequent PLT etries. */
2333 bfd_size_type plt_entry_size;
2334
2335 /* True if the target system is VxWorks. */
2336 int vxworks_p;
2337
2338 /* True if the target system is Symbian OS. */
2339 int symbian_p;
2340
2341 /* True if the target uses REL relocations. */
2342 int use_rel;
2343
2344 /* Short-cuts to get to dynamic linker sections. */
2345 asection *sgot;
2346 asection *sgotplt;
2347 asection *srelgot;
2348 asection *splt;
2349 asection *srelplt;
2350 asection *sdynbss;
2351 asection *srelbss;
2352
2353 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2354 asection *srelplt2;
2355
2356 /* Data for R_ARM_TLS_LDM32 relocations. */
2357 union
2358 {
2359 bfd_signed_vma refcount;
2360 bfd_vma offset;
2361 } tls_ldm_got;
2362
2363 /* Small local sym to section mapping cache. */
2364 struct sym_sec_cache sym_sec;
2365
2366 /* For convenience in allocate_dynrelocs. */
2367 bfd * obfd;
2368
2369 /* The stub hash table. */
2370 struct bfd_hash_table stub_hash_table;
2371
2372 /* Linker stub bfd. */
2373 bfd *stub_bfd;
2374
2375 /* Linker call-backs. */
2376 asection * (*add_stub_section) (const char *, asection *);
2377 void (*layout_sections_again) (void);
2378
2379 /* Array to keep track of which stub sections have been created, and
2380 information on stub grouping. */
2381 struct map_stub
2382 {
2383 /* This is the section to which stubs in the group will be
2384 attached. */
2385 asection *link_sec;
2386 /* The stub section. */
2387 asection *stub_sec;
2388 } *stub_group;
2389
2390 /* Assorted information used by elf32_arm_size_stubs. */
2391 unsigned int bfd_count;
2392 int top_index;
2393 asection **input_list;
2394 };
2395
2396 /* Create an entry in an ARM ELF linker hash table. */
2397
2398 static struct bfd_hash_entry *
2399 elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2400 struct bfd_hash_table * table,
2401 const char * string)
2402 {
2403 struct elf32_arm_link_hash_entry * ret =
2404 (struct elf32_arm_link_hash_entry *) entry;
2405
2406 /* Allocate the structure if it has not already been allocated by a
2407 subclass. */
2408 if (ret == NULL)
2409 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2410 if (ret == NULL)
2411 return (struct bfd_hash_entry *) ret;
2412
2413 /* Call the allocation method of the superclass. */
2414 ret = ((struct elf32_arm_link_hash_entry *)
2415 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2416 table, string));
2417 if (ret != NULL)
2418 {
2419 ret->relocs_copied = NULL;
2420 ret->tls_type = GOT_UNKNOWN;
2421 ret->plt_thumb_refcount = 0;
2422 ret->plt_maybe_thumb_refcount = 0;
2423 ret->plt_got_offset = -1;
2424 ret->export_glue = NULL;
2425
2426 ret->stub_cache = NULL;
2427 }
2428
2429 return (struct bfd_hash_entry *) ret;
2430 }
2431
2432 /* Initialize an entry in the stub hash table. */
2433
2434 static struct bfd_hash_entry *
2435 stub_hash_newfunc (struct bfd_hash_entry *entry,
2436 struct bfd_hash_table *table,
2437 const char *string)
2438 {
2439 /* Allocate the structure if it has not already been allocated by a
2440 subclass. */
2441 if (entry == NULL)
2442 {
2443 entry = bfd_hash_allocate (table,
2444 sizeof (struct elf32_arm_stub_hash_entry));
2445 if (entry == NULL)
2446 return entry;
2447 }
2448
2449 /* Call the allocation method of the superclass. */
2450 entry = bfd_hash_newfunc (entry, table, string);
2451 if (entry != NULL)
2452 {
2453 struct elf32_arm_stub_hash_entry *eh;
2454
2455 /* Initialize the local fields. */
2456 eh = (struct elf32_arm_stub_hash_entry *) entry;
2457 eh->stub_sec = NULL;
2458 eh->stub_offset = 0;
2459 eh->target_value = 0;
2460 eh->target_section = NULL;
2461 eh->stub_type = arm_stub_none;
2462 eh->h = NULL;
2463 eh->id_sec = NULL;
2464 }
2465
2466 return entry;
2467 }
2468
2469 /* Return true if NAME is the name of the relocation section associated
2470 with S. */
2471
2472 static bfd_boolean
2473 reloc_section_p (struct elf32_arm_link_hash_table *htab,
2474 const char *name, asection *s)
2475 {
2476 if (htab->use_rel)
2477 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
2478 else
2479 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
2480 }
2481
2482 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2483 shortcuts to them in our hash table. */
2484
2485 static bfd_boolean
2486 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2487 {
2488 struct elf32_arm_link_hash_table *htab;
2489
2490 htab = elf32_arm_hash_table (info);
2491 /* BPABI objects never have a GOT, or associated sections. */
2492 if (htab->symbian_p)
2493 return TRUE;
2494
2495 if (! _bfd_elf_create_got_section (dynobj, info))
2496 return FALSE;
2497
2498 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2499 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2500 if (!htab->sgot || !htab->sgotplt)
2501 abort ();
2502
2503 htab->srelgot = bfd_make_section_with_flags (dynobj,
2504 RELOC_SECTION (htab, ".got"),
2505 (SEC_ALLOC | SEC_LOAD
2506 | SEC_HAS_CONTENTS
2507 | SEC_IN_MEMORY
2508 | SEC_LINKER_CREATED
2509 | SEC_READONLY));
2510 if (htab->srelgot == NULL
2511 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2512 return FALSE;
2513 return TRUE;
2514 }
2515
2516 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2517 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2518 hash table. */
2519
2520 static bfd_boolean
2521 elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2522 {
2523 struct elf32_arm_link_hash_table *htab;
2524
2525 htab = elf32_arm_hash_table (info);
2526 if (!htab->sgot && !create_got_section (dynobj, info))
2527 return FALSE;
2528
2529 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2530 return FALSE;
2531
2532 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2533 htab->srelplt = bfd_get_section_by_name (dynobj,
2534 RELOC_SECTION (htab, ".plt"));
2535 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2536 if (!info->shared)
2537 htab->srelbss = bfd_get_section_by_name (dynobj,
2538 RELOC_SECTION (htab, ".bss"));
2539
2540 if (htab->vxworks_p)
2541 {
2542 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2543 return FALSE;
2544
2545 if (info->shared)
2546 {
2547 htab->plt_header_size = 0;
2548 htab->plt_entry_size
2549 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2550 }
2551 else
2552 {
2553 htab->plt_header_size
2554 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2555 htab->plt_entry_size
2556 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2557 }
2558 }
2559
2560 if (!htab->splt
2561 || !htab->srelplt
2562 || !htab->sdynbss
2563 || (!info->shared && !htab->srelbss))
2564 abort ();
2565
2566 return TRUE;
2567 }
2568
2569 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2570
2571 static void
2572 elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2573 struct elf_link_hash_entry *dir,
2574 struct elf_link_hash_entry *ind)
2575 {
2576 struct elf32_arm_link_hash_entry *edir, *eind;
2577
2578 edir = (struct elf32_arm_link_hash_entry *) dir;
2579 eind = (struct elf32_arm_link_hash_entry *) ind;
2580
2581 if (eind->relocs_copied != NULL)
2582 {
2583 if (edir->relocs_copied != NULL)
2584 {
2585 struct elf32_arm_relocs_copied **pp;
2586 struct elf32_arm_relocs_copied *p;
2587
2588 /* Add reloc counts against the indirect sym to the direct sym
2589 list. Merge any entries against the same section. */
2590 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2591 {
2592 struct elf32_arm_relocs_copied *q;
2593
2594 for (q = edir->relocs_copied; q != NULL; q = q->next)
2595 if (q->section == p->section)
2596 {
2597 q->pc_count += p->pc_count;
2598 q->count += p->count;
2599 *pp = p->next;
2600 break;
2601 }
2602 if (q == NULL)
2603 pp = &p->next;
2604 }
2605 *pp = edir->relocs_copied;
2606 }
2607
2608 edir->relocs_copied = eind->relocs_copied;
2609 eind->relocs_copied = NULL;
2610 }
2611
2612 if (ind->root.type == bfd_link_hash_indirect)
2613 {
2614 /* Copy over PLT info. */
2615 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2616 eind->plt_thumb_refcount = 0;
2617 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2618 eind->plt_maybe_thumb_refcount = 0;
2619
2620 if (dir->got.refcount <= 0)
2621 {
2622 edir->tls_type = eind->tls_type;
2623 eind->tls_type = GOT_UNKNOWN;
2624 }
2625 }
2626
2627 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2628 }
2629
2630 /* Create an ARM elf linker hash table. */
2631
2632 static struct bfd_link_hash_table *
2633 elf32_arm_link_hash_table_create (bfd *abfd)
2634 {
2635 struct elf32_arm_link_hash_table *ret;
2636 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2637
2638 ret = bfd_malloc (amt);
2639 if (ret == NULL)
2640 return NULL;
2641
2642 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2643 elf32_arm_link_hash_newfunc,
2644 sizeof (struct elf32_arm_link_hash_entry)))
2645 {
2646 free (ret);
2647 return NULL;
2648 }
2649
2650 ret->sgot = NULL;
2651 ret->sgotplt = NULL;
2652 ret->srelgot = NULL;
2653 ret->splt = NULL;
2654 ret->srelplt = NULL;
2655 ret->sdynbss = NULL;
2656 ret->srelbss = NULL;
2657 ret->srelplt2 = NULL;
2658 ret->thumb_glue_size = 0;
2659 ret->arm_glue_size = 0;
2660 ret->bx_glue_size = 0;
2661 memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset));
2662 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2663 ret->vfp11_erratum_glue_size = 0;
2664 ret->num_vfp11_fixes = 0;
2665 ret->bfd_of_glue_owner = NULL;
2666 ret->byteswap_code = 0;
2667 ret->target1_is_rel = 0;
2668 ret->target2_reloc = R_ARM_NONE;
2669 #ifdef FOUR_WORD_PLT
2670 ret->plt_header_size = 16;
2671 ret->plt_entry_size = 16;
2672 #else
2673 ret->plt_header_size = 20;
2674 ret->plt_entry_size = 12;
2675 #endif
2676 ret->fix_v4bx = 0;
2677 ret->use_blx = 0;
2678 ret->vxworks_p = 0;
2679 ret->symbian_p = 0;
2680 ret->use_rel = 1;
2681 ret->sym_sec.abfd = NULL;
2682 ret->obfd = abfd;
2683 ret->tls_ldm_got.refcount = 0;
2684 ret->stub_bfd = NULL;
2685 ret->add_stub_section = NULL;
2686 ret->layout_sections_again = NULL;
2687 ret->stub_group = NULL;
2688 ret->bfd_count = 0;
2689 ret->top_index = 0;
2690 ret->input_list = NULL;
2691
2692 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
2693 sizeof (struct elf32_arm_stub_hash_entry)))
2694 {
2695 free (ret);
2696 return NULL;
2697 }
2698
2699 return &ret->root.root;
2700 }
2701
2702 /* Free the derived linker hash table. */
2703
2704 static void
2705 elf32_arm_hash_table_free (struct bfd_link_hash_table *hash)
2706 {
2707 struct elf32_arm_link_hash_table *ret
2708 = (struct elf32_arm_link_hash_table *) hash;
2709
2710 bfd_hash_table_free (&ret->stub_hash_table);
2711 _bfd_generic_link_hash_table_free (hash);
2712 }
2713
2714 /* Determine if we're dealing with a Thumb only architecture. */
2715
2716 static bfd_boolean
2717 using_thumb_only (struct elf32_arm_link_hash_table *globals)
2718 {
2719 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2720 Tag_CPU_arch);
2721 int profile;
2722
2723 if (arch != TAG_CPU_ARCH_V7)
2724 return FALSE;
2725
2726 profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2727 Tag_CPU_arch_profile);
2728
2729 return profile == 'M';
2730 }
2731
2732 /* Determine if we're dealing with a Thumb-2 object. */
2733
2734 static bfd_boolean
2735 using_thumb2 (struct elf32_arm_link_hash_table *globals)
2736 {
2737 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2738 Tag_CPU_arch);
2739 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
2740 }
2741
2742 static bfd_boolean
2743 arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
2744 {
2745 switch (stub_type)
2746 {
2747 case arm_thumb_thumb_stub_long_branch:
2748 case arm_thumb_arm_v4t_stub_long_branch:
2749 case arm_thumb_arm_v4t_stub_short_branch:
2750 return TRUE;
2751 case arm_stub_none:
2752 BFD_FAIL ();
2753 return FALSE;
2754 break;
2755 default:
2756 return FALSE;
2757 }
2758 }
2759
2760 /* Determine the type of stub needed, if any, for a call. */
2761
2762 static enum elf32_arm_stub_type
2763 arm_type_of_stub (struct bfd_link_info *info,
2764 asection *input_sec,
2765 const Elf_Internal_Rela *rel,
2766 unsigned char st_type,
2767 struct elf32_arm_link_hash_entry *hash,
2768 bfd_vma destination,
2769 asection *sym_sec,
2770 bfd *input_bfd,
2771 const char *name)
2772 {
2773 bfd_vma location;
2774 bfd_signed_vma branch_offset;
2775 unsigned int r_type;
2776 struct elf32_arm_link_hash_table * globals;
2777 int thumb2;
2778 int thumb_only;
2779 enum elf32_arm_stub_type stub_type = arm_stub_none;
2780
2781 /* We don't know the actual type of destination in case it is of
2782 type STT_SECTION: give up. */
2783 if (st_type == STT_SECTION)
2784 return stub_type;
2785
2786 globals = elf32_arm_hash_table (info);
2787
2788 thumb_only = using_thumb_only (globals);
2789
2790 thumb2 = using_thumb2 (globals);
2791
2792 /* Determine where the call point is. */
2793 location = (input_sec->output_offset
2794 + input_sec->output_section->vma
2795 + rel->r_offset);
2796
2797 branch_offset = (bfd_signed_vma)(destination - location);
2798
2799 r_type = ELF32_R_TYPE (rel->r_info);
2800
2801 /* If the call will go through a PLT entry then we do not need
2802 glue. */
2803 if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1)
2804 return stub_type;
2805
2806 if (r_type == R_ARM_THM_CALL)
2807 {
2808 if ((!thumb2
2809 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
2810 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
2811 || (thumb2
2812 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
2813 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
2814 || ((st_type != STT_ARM_TFUNC) && !globals->use_blx))
2815 {
2816 if (st_type == STT_ARM_TFUNC)
2817 {
2818 /* Thumb to thumb. */
2819 if (!thumb_only)
2820 {
2821 stub_type = (info->shared | globals->pic_veneer)
2822 ? ((globals->use_blx)
2823 ? arm_stub_pic_long_branch
2824 : arm_stub_none)
2825 : (globals->use_blx)
2826 ? arm_stub_long_branch
2827 : arm_stub_none;
2828 }
2829 else
2830 {
2831 stub_type = (info->shared | globals->pic_veneer)
2832 ? arm_stub_none
2833 : (globals->use_blx)
2834 ? arm_thumb_thumb_stub_long_branch
2835 : arm_stub_none;
2836 }
2837 }
2838 else
2839 {
2840 /* Thumb to arm. */
2841 if (sym_sec != NULL
2842 && sym_sec->owner != NULL
2843 && !INTERWORK_FLAG (sym_sec->owner))
2844 {
2845 (*_bfd_error_handler)
2846 (_("%B(%s): warning: interworking not enabled.\n"
2847 " first occurrence: %B: Thumb call to ARM"),
2848 sym_sec->owner, input_bfd, name);
2849 }
2850
2851 stub_type = (info->shared | globals->pic_veneer)
2852 ? ((globals->use_blx)
2853 ? arm_stub_pic_long_branch
2854 : arm_stub_none)
2855 : (globals->use_blx)
2856 ? arm_stub_long_branch
2857 : arm_thumb_arm_v4t_stub_long_branch;
2858
2859 /* Handle v4t short branches. */
2860 if ((stub_type == arm_thumb_arm_v4t_stub_long_branch)
2861 && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET)
2862 && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET))
2863 stub_type = arm_thumb_arm_v4t_stub_short_branch;
2864 }
2865 }
2866 }
2867 else if (r_type == R_ARM_CALL)
2868 {
2869 if (st_type == STT_ARM_TFUNC)
2870 {
2871 /* Arm to thumb. */
2872
2873 if (sym_sec != NULL
2874 && sym_sec->owner != NULL
2875 && !INTERWORK_FLAG (sym_sec->owner))
2876 {
2877 (*_bfd_error_handler)
2878 (_("%B(%s): warning: interworking not enabled.\n"
2879 " first occurrence: %B: Thumb call to ARM"),
2880 sym_sec->owner, input_bfd, name);
2881 }
2882
2883 /* We have an extra 2-bytes reach because of
2884 the mode change (bit 24 (H) of BLX encoding). */
2885 if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2)
2886 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)
2887 || !globals->use_blx)
2888 {
2889 stub_type = (info->shared | globals->pic_veneer)
2890 ? arm_stub_pic_long_branch
2891 : (globals->use_blx)
2892 ? arm_stub_long_branch
2893 : arm_thumb_v4t_stub_long_branch;
2894 }
2895 }
2896 else
2897 {
2898 /* Arm to arm. */
2899 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
2900 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET))
2901 {
2902 stub_type = (info->shared | globals->pic_veneer)
2903 ? arm_stub_pic_long_branch
2904 : arm_stub_long_branch;
2905 }
2906 }
2907 }
2908
2909 return stub_type;
2910 }
2911
2912 /* Build a name for an entry in the stub hash table. */
2913
2914 static char *
2915 elf32_arm_stub_name (const asection *input_section,
2916 const asection *sym_sec,
2917 const struct elf32_arm_link_hash_entry *hash,
2918 const Elf_Internal_Rela *rel)
2919 {
2920 char *stub_name;
2921 bfd_size_type len;
2922
2923 if (hash)
2924 {
2925 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1;
2926 stub_name = bfd_malloc (len);
2927 if (stub_name != NULL)
2928 sprintf (stub_name, "%08x_%s+%x",
2929 input_section->id & 0xffffffff,
2930 hash->root.root.root.string,
2931 (int) rel->r_addend & 0xffffffff);
2932 }
2933 else
2934 {
2935 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
2936 stub_name = bfd_malloc (len);
2937 if (stub_name != NULL)
2938 sprintf (stub_name, "%08x_%x:%x+%x",
2939 input_section->id & 0xffffffff,
2940 sym_sec->id & 0xffffffff,
2941 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
2942 (int) rel->r_addend & 0xffffffff);
2943 }
2944
2945 return stub_name;
2946 }
2947
2948 /* Look up an entry in the stub hash. Stub entries are cached because
2949 creating the stub name takes a bit of time. */
2950
2951 static struct elf32_arm_stub_hash_entry *
2952 elf32_arm_get_stub_entry (const asection *input_section,
2953 const asection *sym_sec,
2954 struct elf_link_hash_entry *hash,
2955 const Elf_Internal_Rela *rel,
2956 struct elf32_arm_link_hash_table *htab)
2957 {
2958 struct elf32_arm_stub_hash_entry *stub_entry;
2959 struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash;
2960 const asection *id_sec;
2961
2962 if ((input_section->flags & SEC_CODE) == 0)
2963 return NULL;
2964
2965 /* If this input section is part of a group of sections sharing one
2966 stub section, then use the id of the first section in the group.
2967 Stub names need to include a section id, as there may well be
2968 more than one stub used to reach say, printf, and we need to
2969 distinguish between them. */
2970 id_sec = htab->stub_group[input_section->id].link_sec;
2971
2972 if (h != NULL && h->stub_cache != NULL
2973 && h->stub_cache->h == h
2974 && h->stub_cache->id_sec == id_sec)
2975 {
2976 stub_entry = h->stub_cache;
2977 }
2978 else
2979 {
2980 char *stub_name;
2981
2982 stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel);
2983 if (stub_name == NULL)
2984 return NULL;
2985
2986 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
2987 stub_name, FALSE, FALSE);
2988 if (h != NULL)
2989 h->stub_cache = stub_entry;
2990
2991 free (stub_name);
2992 }
2993
2994 return stub_entry;
2995 }
2996
2997 /* Add a new stub entry to the stub hash. Not all fields of the new
2998 stub entry are initialised. */
2999
3000 static struct elf32_arm_stub_hash_entry *
3001 elf32_arm_add_stub (const char *stub_name,
3002 asection *section,
3003 struct elf32_arm_link_hash_table *htab)
3004 {
3005 asection *link_sec;
3006 asection *stub_sec;
3007 struct elf32_arm_stub_hash_entry *stub_entry;
3008
3009 link_sec = htab->stub_group[section->id].link_sec;
3010 stub_sec = htab->stub_group[section->id].stub_sec;
3011 if (stub_sec == NULL)
3012 {
3013 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3014 if (stub_sec == NULL)
3015 {
3016 size_t namelen;
3017 bfd_size_type len;
3018 char *s_name;
3019
3020 namelen = strlen (link_sec->name);
3021 len = namelen + sizeof (STUB_SUFFIX);
3022 s_name = bfd_alloc (htab->stub_bfd, len);
3023 if (s_name == NULL)
3024 return NULL;
3025
3026 memcpy (s_name, link_sec->name, namelen);
3027 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3028 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3029 if (stub_sec == NULL)
3030 return NULL;
3031 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3032 }
3033 htab->stub_group[section->id].stub_sec = stub_sec;
3034 }
3035
3036 /* Enter this entry into the linker stub hash table. */
3037 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3038 TRUE, FALSE);
3039 if (stub_entry == NULL)
3040 {
3041 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3042 section->owner,
3043 stub_name);
3044 return NULL;
3045 }
3046
3047 stub_entry->stub_sec = stub_sec;
3048 stub_entry->stub_offset = 0;
3049 stub_entry->id_sec = link_sec;
3050
3051 return stub_entry;
3052 }
3053
3054 /* Store an Arm insn into an output section not processed by
3055 elf32_arm_write_section. */
3056
3057 static void
3058 put_arm_insn (struct elf32_arm_link_hash_table * htab,
3059 bfd * output_bfd, bfd_vma val, void * ptr)
3060 {
3061 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3062 bfd_putl32 (val, ptr);
3063 else
3064 bfd_putb32 (val, ptr);
3065 }
3066
3067 /* Store a 16-bit Thumb insn into an output section not processed by
3068 elf32_arm_write_section. */
3069
3070 static void
3071 put_thumb_insn (struct elf32_arm_link_hash_table * htab,
3072 bfd * output_bfd, bfd_vma val, void * ptr)
3073 {
3074 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3075 bfd_putl16 (val, ptr);
3076 else
3077 bfd_putb16 (val, ptr);
3078 }
3079
3080 static bfd_boolean
3081 arm_build_one_stub (struct bfd_hash_entry *gen_entry,
3082 void * in_arg)
3083 {
3084 struct elf32_arm_stub_hash_entry *stub_entry;
3085 struct bfd_link_info *info;
3086 struct elf32_arm_link_hash_table *htab;
3087 asection *stub_sec;
3088 bfd *stub_bfd;
3089 bfd_vma stub_addr;
3090 bfd_byte *loc;
3091 bfd_vma sym_value;
3092 int template_size;
3093 int size;
3094 const bfd_vma *template;
3095 int i;
3096 struct elf32_arm_link_hash_table * globals;
3097
3098 /* Massage our args to the form they really have. */
3099 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3100 info = (struct bfd_link_info *) in_arg;
3101
3102 globals = elf32_arm_hash_table (info);
3103
3104 htab = elf32_arm_hash_table (info);
3105 stub_sec = stub_entry->stub_sec;
3106
3107 /* Make a note of the offset within the stubs for this entry. */
3108 stub_entry->stub_offset = stub_sec->size;
3109 loc = stub_sec->contents + stub_entry->stub_offset;
3110
3111 stub_bfd = stub_sec->owner;
3112
3113 /* This is the address of the start of the stub. */
3114 stub_addr = stub_sec->output_section->vma + stub_sec->output_offset
3115 + stub_entry->stub_offset;
3116
3117 /* This is the address of the stub destination. */
3118 sym_value = (stub_entry->target_value
3119 + stub_entry->target_section->output_offset
3120 + stub_entry->target_section->output_section->vma);
3121
3122 switch (stub_entry->stub_type)
3123 {
3124 case arm_stub_long_branch:
3125 template = arm_long_branch_stub;
3126 template_size = (sizeof (arm_long_branch_stub) / sizeof (bfd_vma)) * 4;
3127 break;
3128 case arm_thumb_v4t_stub_long_branch:
3129 template = arm_thumb_v4t_long_branch_stub;
3130 template_size = (sizeof (arm_thumb_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3131 break;
3132 case arm_thumb_thumb_stub_long_branch:
3133 template = arm_thumb_thumb_long_branch_stub;
3134 template_size = (sizeof (arm_thumb_thumb_long_branch_stub) / sizeof (bfd_vma)) * 4;
3135 break;
3136 case arm_thumb_arm_v4t_stub_long_branch:
3137 template = arm_thumb_arm_v4t_long_branch_stub;
3138 template_size = (sizeof (arm_thumb_arm_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3139 break;
3140 case arm_thumb_arm_v4t_stub_short_branch:
3141 template = arm_thumb_arm_v4t_short_branch_stub;
3142 template_size = (sizeof(arm_thumb_arm_v4t_short_branch_stub) / sizeof (bfd_vma)) * 4;
3143 break;
3144 case arm_stub_pic_long_branch:
3145 template = arm_pic_long_branch_stub;
3146 template_size = (sizeof (arm_pic_long_branch_stub) / sizeof (bfd_vma)) * 4;
3147 break;
3148 default:
3149 BFD_FAIL ();
3150 return FALSE;
3151 }
3152
3153 size = 0;
3154 for (i = 0; i < (template_size / 4); i++)
3155 {
3156 /* A 0 pattern is a placeholder, every other pattern is an
3157 instruction. */
3158 if (template[i] != 0)
3159 put_arm_insn (globals, stub_bfd, template[i], loc + size);
3160 else
3161 bfd_put_32 (stub_bfd, template[i], loc + size);
3162
3163 size += 4;
3164 }
3165 stub_sec->size += size;
3166
3167 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3168 if (stub_entry->st_type == STT_ARM_TFUNC)
3169 sym_value |= 1;
3170
3171 switch (stub_entry->stub_type)
3172 {
3173 case arm_stub_long_branch:
3174 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
3175 stub_bfd, stub_sec, stub_sec->contents,
3176 stub_entry->stub_offset + 4, sym_value, 0);
3177 break;
3178 case arm_thumb_v4t_stub_long_branch:
3179 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
3180 stub_bfd, stub_sec, stub_sec->contents,
3181 stub_entry->stub_offset + 8, sym_value, 0);
3182 break;
3183 case arm_thumb_thumb_stub_long_branch:
3184 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
3185 stub_bfd, stub_sec, stub_sec->contents,
3186 stub_entry->stub_offset + 12, sym_value, 0);
3187 break;
3188 case arm_thumb_arm_v4t_stub_long_branch:
3189 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
3190 stub_bfd, stub_sec, stub_sec->contents,
3191 stub_entry->stub_offset + 16, sym_value, 0);
3192 break;
3193 case arm_thumb_arm_v4t_stub_short_branch:
3194 {
3195 long int rel_offset;
3196 static const insn32 t2a3_b_insn = 0xea000000;
3197
3198 rel_offset = sym_value - (stub_addr + 8 + 4);
3199
3200 put_arm_insn (globals, stub_bfd,
3201 (bfd_vma) t2a3_b_insn | ((rel_offset >> 2) & 0x00FFFFFF),
3202 loc + 4);
3203 }
3204 break;
3205
3206 case arm_stub_pic_long_branch:
3207 /* We want the value relative to the address 8 bytes from the
3208 start of the stub. */
3209 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_REL32),
3210 stub_bfd, stub_sec, stub_sec->contents,
3211 stub_entry->stub_offset + 8, sym_value, 0);
3212 break;
3213 default:
3214 break;
3215 }
3216
3217 return TRUE;
3218 }
3219
3220 /* As above, but don't actually build the stub. Just bump offset so
3221 we know stub section sizes. */
3222
3223 static bfd_boolean
3224 arm_size_one_stub (struct bfd_hash_entry *gen_entry,
3225 void * in_arg)
3226 {
3227 struct elf32_arm_stub_hash_entry *stub_entry;
3228 struct elf32_arm_link_hash_table *htab;
3229 const bfd_vma *template;
3230 int template_size;
3231 int size;
3232 int i;
3233
3234 /* Massage our args to the form they really have. */
3235 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3236 htab = (struct elf32_arm_link_hash_table *) in_arg;
3237
3238 switch (stub_entry->stub_type)
3239 {
3240 case arm_stub_long_branch:
3241 template = arm_long_branch_stub;
3242 template_size = (sizeof (arm_long_branch_stub) / sizeof (bfd_vma)) * 4;
3243 break;
3244 case arm_thumb_v4t_stub_long_branch:
3245 template = arm_thumb_v4t_long_branch_stub;
3246 template_size = (sizeof (arm_thumb_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3247 break;
3248 case arm_thumb_thumb_stub_long_branch:
3249 template = arm_thumb_thumb_long_branch_stub;
3250 template_size = (sizeof (arm_thumb_thumb_long_branch_stub) / sizeof (bfd_vma)) * 4;
3251 break;
3252 case arm_thumb_arm_v4t_stub_long_branch:
3253 template = arm_thumb_arm_v4t_long_branch_stub;
3254 template_size = (sizeof (arm_thumb_arm_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3255 break;
3256 case arm_thumb_arm_v4t_stub_short_branch:
3257 template = arm_thumb_arm_v4t_short_branch_stub;
3258 template_size = (sizeof(arm_thumb_arm_v4t_short_branch_stub) / sizeof (bfd_vma)) * 4;
3259 break;
3260 case arm_stub_pic_long_branch:
3261 template = arm_pic_long_branch_stub;
3262 template_size = (sizeof (arm_pic_long_branch_stub) / sizeof (bfd_vma)) * 4;
3263 break;
3264 default:
3265 BFD_FAIL ();
3266 return FALSE;
3267 break;
3268 }
3269
3270 size = 0;
3271 for (i = 0; i < (template_size / 4); i++)
3272 size += 4;
3273 size = (size + 7) & ~7;
3274 stub_entry->stub_sec->size += size;
3275 return TRUE;
3276 }
3277
3278 /* External entry points for sizing and building linker stubs. */
3279
3280 /* Set up various things so that we can make a list of input sections
3281 for each output section included in the link. Returns -1 on error,
3282 0 when no stubs will be needed, and 1 on success. */
3283
3284 int
3285 elf32_arm_setup_section_lists (bfd *output_bfd,
3286 struct bfd_link_info *info)
3287 {
3288 bfd *input_bfd;
3289 unsigned int bfd_count;
3290 int top_id, top_index;
3291 asection *section;
3292 asection **input_list, **list;
3293 bfd_size_type amt;
3294 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3295
3296 if (! is_elf_hash_table (htab))
3297 return 0;
3298
3299 /* Count the number of input BFDs and find the top input section id. */
3300 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3301 input_bfd != NULL;
3302 input_bfd = input_bfd->link_next)
3303 {
3304 bfd_count += 1;
3305 for (section = input_bfd->sections;
3306 section != NULL;
3307 section = section->next)
3308 {
3309 if (top_id < section->id)
3310 top_id = section->id;
3311 }
3312 }
3313 htab->bfd_count = bfd_count;
3314
3315 amt = sizeof (struct map_stub) * (top_id + 1);
3316 htab->stub_group = bfd_zmalloc (amt);
3317 if (htab->stub_group == NULL)
3318 return -1;
3319
3320 /* We can't use output_bfd->section_count here to find the top output
3321 section index as some sections may have been removed, and
3322 _bfd_strip_section_from_output doesn't renumber the indices. */
3323 for (section = output_bfd->sections, top_index = 0;
3324 section != NULL;
3325 section = section->next)
3326 {
3327 if (top_index < section->index)
3328 top_index = section->index;
3329 }
3330
3331 htab->top_index = top_index;
3332 amt = sizeof (asection *) * (top_index + 1);
3333 input_list = bfd_malloc (amt);
3334 htab->input_list = input_list;
3335 if (input_list == NULL)
3336 return -1;
3337
3338 /* For sections we aren't interested in, mark their entries with a
3339 value we can check later. */
3340 list = input_list + top_index;
3341 do
3342 *list = bfd_abs_section_ptr;
3343 while (list-- != input_list);
3344
3345 for (section = output_bfd->sections;
3346 section != NULL;
3347 section = section->next)
3348 {
3349 if ((section->flags & SEC_CODE) != 0)
3350 input_list[section->index] = NULL;
3351 }
3352
3353 return 1;
3354 }
3355
3356 /* The linker repeatedly calls this function for each input section,
3357 in the order that input sections are linked into output sections.
3358 Build lists of input sections to determine groupings between which
3359 we may insert linker stubs. */
3360
3361 void
3362 elf32_arm_next_input_section (struct bfd_link_info *info,
3363 asection *isec)
3364 {
3365 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3366
3367 if (isec->output_section->index <= htab->top_index)
3368 {
3369 asection **list = htab->input_list + isec->output_section->index;
3370
3371 if (*list != bfd_abs_section_ptr)
3372 {
3373 /* Steal the link_sec pointer for our list. */
3374 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3375 /* This happens to make the list in reverse order,
3376 which is what we want. */
3377 PREV_SEC (isec) = *list;
3378 *list = isec;
3379 }
3380 }
3381 }
3382
3383 /* See whether we can group stub sections together. Grouping stub
3384 sections may result in fewer stubs. More importantly, we need to
3385 put all .init* and .fini* stubs at the beginning of the .init or
3386 .fini output sections respectively, because glibc splits the
3387 _init and _fini functions into multiple parts. Putting a stub in
3388 the middle of a function is not a good idea. */
3389
3390 static void
3391 group_sections (struct elf32_arm_link_hash_table *htab,
3392 bfd_size_type stub_group_size,
3393 bfd_boolean stubs_always_before_branch)
3394 {
3395 asection **list = htab->input_list + htab->top_index;
3396
3397 do
3398 {
3399 asection *tail = *list;
3400
3401 if (tail == bfd_abs_section_ptr)
3402 continue;
3403
3404 while (tail != NULL)
3405 {
3406 asection *curr;
3407 asection *prev;
3408 bfd_size_type total;
3409
3410 curr = tail;
3411 total = tail->size;
3412 while ((prev = PREV_SEC (curr)) != NULL
3413 && ((total += curr->output_offset - prev->output_offset)
3414 < stub_group_size))
3415 curr = prev;
3416
3417 /* OK, the size from the start of CURR to the end is less
3418 than stub_group_size and thus can be handled by one stub
3419 section. (Or the tail section is itself larger than
3420 stub_group_size, in which case we may be toast.)
3421 We should really be keeping track of the total size of
3422 stubs added here, as stubs contribute to the final output
3423 section size. */
3424 do
3425 {
3426 prev = PREV_SEC (tail);
3427 /* Set up this stub group. */
3428 htab->stub_group[tail->id].link_sec = curr;
3429 }
3430 while (tail != curr && (tail = prev) != NULL);
3431
3432 /* But wait, there's more! Input sections up to stub_group_size
3433 bytes before the stub section can be handled by it too. */
3434 if (!stubs_always_before_branch)
3435 {
3436 total = 0;
3437 while (prev != NULL
3438 && ((total += tail->output_offset - prev->output_offset)
3439 < stub_group_size))
3440 {
3441 tail = prev;
3442 prev = PREV_SEC (tail);
3443 htab->stub_group[tail->id].link_sec = curr;
3444 }
3445 }
3446 tail = prev;
3447 }
3448 }
3449 while (list-- != htab->input_list);
3450
3451 free (htab->input_list);
3452 #undef PREV_SEC
3453 }
3454
3455 /* Determine and set the size of the stub section for a final link.
3456
3457 The basic idea here is to examine all the relocations looking for
3458 PC-relative calls to a target that is unreachable with a "bl"
3459 instruction. */
3460
3461 bfd_boolean
3462 elf32_arm_size_stubs (bfd *output_bfd,
3463 bfd *stub_bfd,
3464 struct bfd_link_info *info,
3465 bfd_signed_vma group_size,
3466 asection * (*add_stub_section) (const char *, asection *),
3467 void (*layout_sections_again) (void))
3468 {
3469 bfd_size_type stub_group_size;
3470 bfd_boolean stubs_always_before_branch;
3471 bfd_boolean stub_changed = 0;
3472 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3473
3474 /* Propagate mach to stub bfd, because it may not have been
3475 finalized when we created stub_bfd. */
3476 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3477 bfd_get_mach (output_bfd));
3478
3479 /* Stash our params away. */
3480 htab->stub_bfd = stub_bfd;
3481 htab->add_stub_section = add_stub_section;
3482 htab->layout_sections_again = layout_sections_again;
3483 stubs_always_before_branch = group_size < 0;
3484 if (group_size < 0)
3485 stub_group_size = -group_size;
3486 else
3487 stub_group_size = group_size;
3488
3489 if (stub_group_size == 1)
3490 {
3491 /* Default values. */
3492 /* Thumb branch range is +-4MB has to be used as the default
3493 maximum size (a given section can contain both ARM and Thumb
3494 code, so the worst case has to be taken into account).
3495
3496 This value is 24K less than that, which allows for 2025
3497 12-byte stubs. If we exceed that, then we will fail to link.
3498 The user will have to relink with an explicit group size
3499 option. */
3500 stub_group_size = 4170000;
3501 }
3502
3503 group_sections (htab, stub_group_size, stubs_always_before_branch);
3504
3505 while (1)
3506 {
3507 bfd *input_bfd;
3508 unsigned int bfd_indx;
3509 asection *stub_sec;
3510
3511 for (input_bfd = info->input_bfds, bfd_indx = 0;
3512 input_bfd != NULL;
3513 input_bfd = input_bfd->link_next, bfd_indx++)
3514 {
3515 Elf_Internal_Shdr *symtab_hdr;
3516 asection *section;
3517 Elf_Internal_Sym *local_syms = NULL;
3518
3519 /* We'll need the symbol table in a second. */
3520 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3521 if (symtab_hdr->sh_info == 0)
3522 continue;
3523
3524 /* Walk over each section attached to the input bfd. */
3525 for (section = input_bfd->sections;
3526 section != NULL;
3527 section = section->next)
3528 {
3529 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3530
3531 /* If there aren't any relocs, then there's nothing more
3532 to do. */
3533 if ((section->flags & SEC_RELOC) == 0
3534 || section->reloc_count == 0
3535 || (section->flags & SEC_CODE) == 0)
3536 continue;
3537
3538 /* If this section is a link-once section that will be
3539 discarded, then don't create any stubs. */
3540 if (section->output_section == NULL
3541 || section->output_section->owner != output_bfd)
3542 continue;
3543
3544 /* Get the relocs. */
3545 internal_relocs
3546 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
3547 NULL, info->keep_memory);
3548 if (internal_relocs == NULL)
3549 goto error_ret_free_local;
3550
3551 /* Now examine each relocation. */
3552 irela = internal_relocs;
3553 irelaend = irela + section->reloc_count;
3554 for (; irela < irelaend; irela++)
3555 {
3556 unsigned int r_type, r_indx;
3557 enum elf32_arm_stub_type stub_type;
3558 struct elf32_arm_stub_hash_entry *stub_entry;
3559 asection *sym_sec;
3560 bfd_vma sym_value;
3561 bfd_vma destination;
3562 struct elf32_arm_link_hash_entry *hash;
3563 const char *sym_name;
3564 char *stub_name;
3565 const asection *id_sec;
3566 unsigned char st_type;
3567
3568 r_type = ELF32_R_TYPE (irela->r_info);
3569 r_indx = ELF32_R_SYM (irela->r_info);
3570
3571 if (r_type >= (unsigned int) R_ARM_max)
3572 {
3573 bfd_set_error (bfd_error_bad_value);
3574 error_ret_free_internal:
3575 if (elf_section_data (section)->relocs == NULL)
3576 free (internal_relocs);
3577 goto error_ret_free_local;
3578 }
3579
3580 /* Only look for stubs on call instructions. */
3581 if ((r_type != (unsigned int) R_ARM_CALL)
3582 && (r_type != (unsigned int) R_ARM_THM_CALL))
3583 continue;
3584
3585 /* Now determine the call target, its name, value,
3586 section. */
3587 sym_sec = NULL;
3588 sym_value = 0;
3589 destination = 0;
3590 hash = NULL;
3591 sym_name = NULL;
3592 if (r_indx < symtab_hdr->sh_info)
3593 {
3594 /* It's a local symbol. */
3595 Elf_Internal_Sym *sym;
3596 Elf_Internal_Shdr *hdr;
3597
3598 if (local_syms == NULL)
3599 {
3600 local_syms
3601 = (Elf_Internal_Sym *) symtab_hdr->contents;
3602 if (local_syms == NULL)
3603 local_syms
3604 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3605 symtab_hdr->sh_info, 0,
3606 NULL, NULL, NULL);
3607 if (local_syms == NULL)
3608 goto error_ret_free_internal;
3609 }
3610
3611 sym = local_syms + r_indx;
3612 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
3613 sym_sec = hdr->bfd_section;
3614 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
3615 sym_value = sym->st_value;
3616 destination = (sym_value + irela->r_addend
3617 + sym_sec->output_offset
3618 + sym_sec->output_section->vma);
3619 st_type = ELF_ST_TYPE (sym->st_info);
3620 sym_name
3621 = bfd_elf_string_from_elf_section (input_bfd,
3622 symtab_hdr->sh_link,
3623 sym->st_name);
3624 }
3625 else
3626 {
3627 /* It's an external symbol. */
3628 int e_indx;
3629
3630 e_indx = r_indx - symtab_hdr->sh_info;
3631 hash = ((struct elf32_arm_link_hash_entry *)
3632 elf_sym_hashes (input_bfd)[e_indx]);
3633
3634 while (hash->root.root.type == bfd_link_hash_indirect
3635 || hash->root.root.type == bfd_link_hash_warning)
3636 hash = ((struct elf32_arm_link_hash_entry *)
3637 hash->root.root.u.i.link);
3638
3639 if (hash->root.root.type == bfd_link_hash_defined
3640 || hash->root.root.type == bfd_link_hash_defweak)
3641 {
3642 sym_sec = hash->root.root.u.def.section;
3643 sym_value = hash->root.root.u.def.value;
3644 if (sym_sec->output_section != NULL)
3645 destination = (sym_value + irela->r_addend
3646 + sym_sec->output_offset
3647 + sym_sec->output_section->vma);
3648 }
3649 else if (hash->root.root.type == bfd_link_hash_undefweak
3650 || hash->root.root.type == bfd_link_hash_undefined)
3651 /* For a shared library, these will need a PLT stub,
3652 which is treated separately.
3653 For absolute code, they cannot be handled. */
3654 continue;
3655 else
3656 {
3657 bfd_set_error (bfd_error_bad_value);
3658 goto error_ret_free_internal;
3659 }
3660 st_type = ELF_ST_TYPE (hash->root.type);
3661 sym_name = hash->root.root.root.string;
3662 }
3663
3664 /* Determine what (if any) linker stub is needed. */
3665 stub_type = arm_type_of_stub (info, section, irela, st_type,
3666 hash, destination, sym_sec,
3667 input_bfd, sym_name);
3668 if (stub_type == arm_stub_none)
3669 continue;
3670
3671 /* Support for grouping stub sections. */
3672 id_sec = htab->stub_group[section->id].link_sec;
3673
3674 /* Get the name of this stub. */
3675 stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela);
3676 if (!stub_name)
3677 goto error_ret_free_internal;
3678
3679 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
3680 stub_name,
3681 FALSE, FALSE);
3682 if (stub_entry != NULL)
3683 {
3684 /* The proper stub has already been created. */
3685 free (stub_name);
3686 continue;
3687 }
3688
3689 stub_entry = elf32_arm_add_stub (stub_name, section, htab);
3690 if (stub_entry == NULL)
3691 {
3692 free (stub_name);
3693 goto error_ret_free_internal;
3694 }
3695
3696 stub_entry->target_value = sym_value;
3697 stub_entry->target_section = sym_sec;
3698 stub_entry->stub_type = stub_type;
3699 stub_entry->h = hash;
3700 stub_entry->st_type = st_type;
3701
3702 if (sym_name == NULL)
3703 sym_name = "unnamed";
3704 stub_entry->output_name
3705 = bfd_alloc (htab->stub_bfd,
3706 sizeof (THUMB2ARM_GLUE_ENTRY_NAME)
3707 + strlen (sym_name));
3708 if (stub_entry->output_name == NULL)
3709 {
3710 free (stub_name);
3711 goto error_ret_free_internal;
3712 }
3713
3714 /* For historical reasons, use the existing names for
3715 ARM-to-Thumb and Thumb-to-ARM stubs. */
3716 if (r_type == (unsigned int) R_ARM_THM_CALL
3717 && st_type != STT_ARM_TFUNC)
3718 sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME,
3719 sym_name);
3720 else if (r_type == (unsigned int) R_ARM_CALL
3721 && st_type == STT_ARM_TFUNC)
3722 sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME,
3723 sym_name);
3724 else
3725 sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
3726 sym_name);
3727
3728 stub_changed = TRUE;
3729 }
3730
3731 /* We're done with the internal relocs, free them. */
3732 if (elf_section_data (section)->relocs == NULL)
3733 free (internal_relocs);
3734 }
3735 }
3736
3737 if (!stub_changed)
3738 break;
3739
3740 /* OK, we've added some stubs. Find out the new size of the
3741 stub sections. */
3742 for (stub_sec = htab->stub_bfd->sections;
3743 stub_sec != NULL;
3744 stub_sec = stub_sec->next)
3745 stub_sec->size = 0;
3746
3747 bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab);
3748
3749 /* Ask the linker to do its stuff. */
3750 (*htab->layout_sections_again) ();
3751 stub_changed = FALSE;
3752 }
3753
3754 return TRUE;
3755
3756 error_ret_free_local:
3757 return FALSE;
3758 }
3759
3760 /* Build all the stubs associated with the current output file. The
3761 stubs are kept in a hash table attached to the main linker hash
3762 table. We also set up the .plt entries for statically linked PIC
3763 functions here. This function is called via arm_elf_finish in the
3764 linker. */
3765
3766 bfd_boolean
3767 elf32_arm_build_stubs (struct bfd_link_info *info)
3768 {
3769 asection *stub_sec;
3770 struct bfd_hash_table *table;
3771 struct elf32_arm_link_hash_table *htab;
3772
3773 htab = elf32_arm_hash_table (info);
3774
3775 for (stub_sec = htab->stub_bfd->sections;
3776 stub_sec != NULL;
3777 stub_sec = stub_sec->next)
3778 {
3779 bfd_size_type size;
3780
3781 /* Ignore non-stub sections. */
3782 if (!strstr (stub_sec->name, STUB_SUFFIX))
3783 continue;
3784
3785 /* Allocate memory to hold the linker stubs. */
3786 size = stub_sec->size;
3787 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3788 if (stub_sec->contents == NULL && size != 0)
3789 return FALSE;
3790 stub_sec->size = 0;
3791 }
3792
3793 /* Build the stubs as directed by the stub hash table. */
3794 table = &htab->stub_hash_table;
3795 bfd_hash_traverse (table, arm_build_one_stub, info);
3796
3797 return TRUE;
3798 }
3799
3800 /* Locate the Thumb encoded calling stub for NAME. */
3801
3802 static struct elf_link_hash_entry *
3803 find_thumb_glue (struct bfd_link_info *link_info,
3804 const char *name,
3805 char **error_message)
3806 {
3807 char *tmp_name;
3808 struct elf_link_hash_entry *hash;
3809 struct elf32_arm_link_hash_table *hash_table;
3810
3811 /* We need a pointer to the armelf specific hash table. */
3812 hash_table = elf32_arm_hash_table (link_info);
3813
3814 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3815 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
3816
3817 BFD_ASSERT (tmp_name);
3818
3819 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
3820
3821 hash = elf_link_hash_lookup
3822 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
3823
3824 if (hash == NULL
3825 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
3826 tmp_name, name) == -1)
3827 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
3828
3829 free (tmp_name);
3830
3831 return hash;
3832 }
3833
3834 /* Locate the ARM encoded calling stub for NAME. */
3835
3836 static struct elf_link_hash_entry *
3837 find_arm_glue (struct bfd_link_info *link_info,
3838 const char *name,
3839 char **error_message)
3840 {
3841 char *tmp_name;
3842 struct elf_link_hash_entry *myh;
3843 struct elf32_arm_link_hash_table *hash_table;
3844
3845 /* We need a pointer to the elfarm specific hash table. */
3846 hash_table = elf32_arm_hash_table (link_info);
3847
3848 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3849 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
3850
3851 BFD_ASSERT (tmp_name);
3852
3853 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
3854
3855 myh = elf_link_hash_lookup
3856 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
3857
3858 if (myh == NULL
3859 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
3860 tmp_name, name) == -1)
3861 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
3862
3863 free (tmp_name);
3864
3865 return myh;
3866 }
3867
3868 /* ARM->Thumb glue (static images):
3869
3870 .arm
3871 __func_from_arm:
3872 ldr r12, __func_addr
3873 bx r12
3874 __func_addr:
3875 .word func @ behave as if you saw a ARM_32 reloc.
3876
3877 (v5t static images)
3878 .arm
3879 __func_from_arm:
3880 ldr pc, __func_addr
3881 __func_addr:
3882 .word func @ behave as if you saw a ARM_32 reloc.
3883
3884 (relocatable images)
3885 .arm
3886 __func_from_arm:
3887 ldr r12, __func_offset
3888 add r12, r12, pc
3889 bx r12
3890 __func_offset:
3891 .word func - . */
3892
3893 #define ARM2THUMB_STATIC_GLUE_SIZE 12
3894 static const insn32 a2t1_ldr_insn = 0xe59fc000;
3895 static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
3896 static const insn32 a2t3_func_addr_insn = 0x00000001;
3897
3898 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
3899 static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
3900 static const insn32 a2t2v5_func_addr_insn = 0x00000001;
3901
3902 #define ARM2THUMB_PIC_GLUE_SIZE 16
3903 static const insn32 a2t1p_ldr_insn = 0xe59fc004;
3904 static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
3905 static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
3906
3907 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
3908
3909 .thumb .thumb
3910 .align 2 .align 2
3911 __func_from_thumb: __func_from_thumb:
3912 bx pc push {r6, lr}
3913 nop ldr r6, __func_addr
3914 .arm mov lr, pc
3915 b func bx r6
3916 .arm
3917 ;; back_to_thumb
3918 ldmia r13! {r6, lr}
3919 bx lr
3920 __func_addr:
3921 .word func */
3922
3923 #define THUMB2ARM_GLUE_SIZE 8
3924 static const insn16 t2a1_bx_pc_insn = 0x4778;
3925 static const insn16 t2a2_noop_insn = 0x46c0;
3926 static const insn32 t2a3_b_insn = 0xea000000;
3927
3928 #define VFP11_ERRATUM_VENEER_SIZE 8
3929
3930 #define ARM_BX_VENEER_SIZE 12
3931 static const insn32 armbx1_tst_insn = 0xe3100001;
3932 static const insn32 armbx2_moveq_insn = 0x01a0f000;
3933 static const insn32 armbx3_bx_insn = 0xe12fff10;
3934
3935 #ifndef ELFARM_NABI_C_INCLUDED
3936 static void
3937 arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name)
3938 {
3939 asection * s;
3940 bfd_byte * contents;
3941
3942 if (size == 0)
3943 return;
3944
3945 BFD_ASSERT (abfd != NULL);
3946
3947 s = bfd_get_section_by_name (abfd, name);
3948 BFD_ASSERT (s != NULL);
3949
3950 contents = bfd_alloc (abfd, size);
3951
3952 BFD_ASSERT (s->size == size);
3953 s->contents = contents;
3954 }
3955
3956 bfd_boolean
3957 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
3958 {
3959 struct elf32_arm_link_hash_table * globals;
3960
3961 globals = elf32_arm_hash_table (info);
3962 BFD_ASSERT (globals != NULL);
3963
3964 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3965 globals->arm_glue_size,
3966 ARM2THUMB_GLUE_SECTION_NAME);
3967
3968 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3969 globals->thumb_glue_size,
3970 THUMB2ARM_GLUE_SECTION_NAME);
3971
3972 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3973 globals->vfp11_erratum_glue_size,
3974 VFP11_ERRATUM_VENEER_SECTION_NAME);
3975
3976 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3977 globals->bx_glue_size,
3978 ARM_BX_GLUE_SECTION_NAME);
3979
3980 return TRUE;
3981 }
3982
3983 /* Allocate space and symbols for calling a Thumb function from Arm mode.
3984 returns the symbol identifying the stub. */
3985
3986 static struct elf_link_hash_entry *
3987 record_arm_to_thumb_glue (struct bfd_link_info * link_info,
3988 struct elf_link_hash_entry * h)
3989 {
3990 const char * name = h->root.root.string;
3991 asection * s;
3992 char * tmp_name;
3993 struct elf_link_hash_entry * myh;
3994 struct bfd_link_hash_entry * bh;
3995 struct elf32_arm_link_hash_table * globals;
3996 bfd_vma val;
3997 bfd_size_type size;
3998
3999 globals = elf32_arm_hash_table (link_info);
4000
4001 BFD_ASSERT (globals != NULL);
4002 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4003
4004 s = bfd_get_section_by_name
4005 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
4006
4007 BFD_ASSERT (s != NULL);
4008
4009 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
4010
4011 BFD_ASSERT (tmp_name);
4012
4013 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
4014
4015 myh = elf_link_hash_lookup
4016 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
4017
4018 if (myh != NULL)
4019 {
4020 /* We've already seen this guy. */
4021 free (tmp_name);
4022 return myh;
4023 }
4024
4025 /* The only trick here is using hash_table->arm_glue_size as the value.
4026 Even though the section isn't allocated yet, this is where we will be
4027 putting it. The +1 on the value marks that the stub has not been
4028 output yet - not that it is a Thumb function. */
4029 bh = NULL;
4030 val = globals->arm_glue_size + 1;
4031 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4032 tmp_name, BSF_GLOBAL, s, val,
4033 NULL, TRUE, FALSE, &bh);
4034
4035 myh = (struct elf_link_hash_entry *) bh;
4036 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4037 myh->forced_local = 1;
4038
4039 free (tmp_name);
4040
4041 if (link_info->shared || globals->root.is_relocatable_executable
4042 || globals->pic_veneer)
4043 size = ARM2THUMB_PIC_GLUE_SIZE;
4044 else if (globals->use_blx)
4045 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
4046 else
4047 size = ARM2THUMB_STATIC_GLUE_SIZE;
4048
4049 s->size += size;
4050 globals->arm_glue_size += size;
4051
4052 return myh;
4053 }
4054
4055 static void
4056 record_thumb_to_arm_glue (struct bfd_link_info *link_info,
4057 struct elf_link_hash_entry *h)
4058 {
4059 const char *name = h->root.root.string;
4060 asection *s;
4061 char *tmp_name;
4062 struct elf_link_hash_entry *myh;
4063 struct bfd_link_hash_entry *bh;
4064 struct elf32_arm_link_hash_table *hash_table;
4065 bfd_vma val;
4066
4067 hash_table = elf32_arm_hash_table (link_info);
4068
4069 BFD_ASSERT (hash_table != NULL);
4070 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
4071
4072 s = bfd_get_section_by_name
4073 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
4074
4075 BFD_ASSERT (s != NULL);
4076
4077 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4078 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
4079
4080 BFD_ASSERT (tmp_name);
4081
4082 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
4083
4084 myh = elf_link_hash_lookup
4085 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
4086
4087 if (myh != NULL)
4088 {
4089 /* We've already seen this guy. */
4090 free (tmp_name);
4091 return;
4092 }
4093
4094 /* The only trick here is using hash_table->thumb_glue_size as the value.
4095 Even though the section isn't allocated yet, this is where we will be
4096 putting it. The +1 on the value marks that the stub has not been
4097 output yet - not that it is a Thumb function. */
4098 bh = NULL;
4099 val = hash_table->thumb_glue_size + 1;
4100 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4101 tmp_name, BSF_GLOBAL, s, val,
4102 NULL, TRUE, FALSE, &bh);
4103
4104 /* If we mark it 'Thumb', the disassembler will do a better job. */
4105 myh = (struct elf_link_hash_entry *) bh;
4106 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
4107 myh->forced_local = 1;
4108
4109 free (tmp_name);
4110
4111 #define CHANGE_TO_ARM "__%s_change_to_arm"
4112 #define BACK_FROM_ARM "__%s_back_from_arm"
4113
4114 /* Allocate another symbol to mark where we switch to Arm mode. */
4115 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4116 + strlen (CHANGE_TO_ARM) + 1);
4117
4118 BFD_ASSERT (tmp_name);
4119
4120 sprintf (tmp_name, CHANGE_TO_ARM, name);
4121
4122 bh = NULL;
4123 val = hash_table->thumb_glue_size + 4,
4124 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4125 tmp_name, BSF_LOCAL, s, val,
4126 NULL, TRUE, FALSE, &bh);
4127
4128 free (tmp_name);
4129
4130 s->size += THUMB2ARM_GLUE_SIZE;
4131 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
4132 }
4133
4134
4135 /* Allocate space for ARMv4 BX veneers. */
4136
4137 static void
4138 record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
4139 {
4140 asection * s;
4141 struct elf32_arm_link_hash_table *globals;
4142 char *tmp_name;
4143 struct elf_link_hash_entry *myh;
4144 struct bfd_link_hash_entry *bh;
4145 bfd_vma val;
4146
4147 /* BX PC does not need a veneer. */
4148 if (reg == 15)
4149 return;
4150
4151 globals = elf32_arm_hash_table (link_info);
4152
4153 BFD_ASSERT (globals != NULL);
4154 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4155
4156 /* Check if this veneer has already been allocated. */
4157 if (globals->bx_glue_offset[reg])
4158 return;
4159
4160 s = bfd_get_section_by_name
4161 (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
4162
4163 BFD_ASSERT (s != NULL);
4164
4165 /* Add symbol for veneer. */
4166 tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
4167
4168 BFD_ASSERT (tmp_name);
4169
4170 sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
4171
4172 myh = elf_link_hash_lookup
4173 (&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
4174
4175 BFD_ASSERT (myh == NULL);
4176
4177 bh = NULL;
4178 val = globals->bx_glue_size;
4179 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4180 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4181 NULL, TRUE, FALSE, &bh);
4182
4183 myh = (struct elf_link_hash_entry *) bh;
4184 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4185 myh->forced_local = 1;
4186
4187 s->size += ARM_BX_VENEER_SIZE;
4188 globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
4189 globals->bx_glue_size += ARM_BX_VENEER_SIZE;
4190 }
4191
4192
4193 /* Add an entry to the code/data map for section SEC. */
4194
4195 static void
4196 elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
4197 {
4198 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
4199 unsigned int newidx;
4200
4201 if (sec_data->map == NULL)
4202 {
4203 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
4204 sec_data->mapcount = 0;
4205 sec_data->mapsize = 1;
4206 }
4207
4208 newidx = sec_data->mapcount++;
4209
4210 if (sec_data->mapcount > sec_data->mapsize)
4211 {
4212 sec_data->mapsize *= 2;
4213 sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize
4214 * sizeof (elf32_arm_section_map));
4215 }
4216
4217 if (sec_data->map)
4218 {
4219 sec_data->map[newidx].vma = vma;
4220 sec_data->map[newidx].type = type;
4221 }
4222 }
4223
4224
4225 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4226 veneers are handled for now. */
4227
4228 static bfd_vma
4229 record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
4230 elf32_vfp11_erratum_list *branch,
4231 bfd *branch_bfd,
4232 asection *branch_sec,
4233 unsigned int offset)
4234 {
4235 asection *s;
4236 struct elf32_arm_link_hash_table *hash_table;
4237 char *tmp_name;
4238 struct elf_link_hash_entry *myh;
4239 struct bfd_link_hash_entry *bh;
4240 bfd_vma val;
4241 struct _arm_elf_section_data *sec_data;
4242 int errcount;
4243 elf32_vfp11_erratum_list *newerr;
4244
4245 hash_table = elf32_arm_hash_table (link_info);
4246
4247 BFD_ASSERT (hash_table != NULL);
4248 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
4249
4250 s = bfd_get_section_by_name
4251 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
4252
4253 sec_data = elf32_arm_section_data (s);
4254
4255 BFD_ASSERT (s != NULL);
4256
4257 tmp_name = bfd_malloc ((bfd_size_type) strlen
4258 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
4259
4260 BFD_ASSERT (tmp_name);
4261
4262 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
4263 hash_table->num_vfp11_fixes);
4264
4265 myh = elf_link_hash_lookup
4266 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
4267
4268 BFD_ASSERT (myh == NULL);
4269
4270 bh = NULL;
4271 val = hash_table->vfp11_erratum_glue_size;
4272 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4273 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4274 NULL, TRUE, FALSE, &bh);
4275
4276 myh = (struct elf_link_hash_entry *) bh;
4277 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4278 myh->forced_local = 1;
4279
4280 /* Link veneer back to calling location. */
4281 errcount = ++(sec_data->erratumcount);
4282 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
4283
4284 newerr->type = VFP11_ERRATUM_ARM_VENEER;
4285 newerr->vma = -1;
4286 newerr->u.v.branch = branch;
4287 newerr->u.v.id = hash_table->num_vfp11_fixes;
4288 branch->u.b.veneer = newerr;
4289
4290 newerr->next = sec_data->erratumlist;
4291 sec_data->erratumlist = newerr;
4292
4293 /* A symbol for the return from the veneer. */
4294 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
4295 hash_table->num_vfp11_fixes);
4296
4297 myh = elf_link_hash_lookup
4298 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
4299
4300 if (myh != NULL)
4301 abort ();
4302
4303 bh = NULL;
4304 val = offset + 4;
4305 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
4306 branch_sec, val, NULL, TRUE, FALSE, &bh);
4307
4308 myh = (struct elf_link_hash_entry *) bh;
4309 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4310 myh->forced_local = 1;
4311
4312 free (tmp_name);
4313
4314 /* Generate a mapping symbol for the veneer section, and explicitly add an
4315 entry for that symbol to the code/data map for the section. */
4316 if (hash_table->vfp11_erratum_glue_size == 0)
4317 {
4318 bh = NULL;
4319 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4320 ever requires this erratum fix. */
4321 _bfd_generic_link_add_one_symbol (link_info,
4322 hash_table->bfd_of_glue_owner, "$a",
4323 BSF_LOCAL, s, 0, NULL,
4324 TRUE, FALSE, &bh);
4325
4326 myh = (struct elf_link_hash_entry *) bh;
4327 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
4328 myh->forced_local = 1;
4329
4330 /* The elf32_arm_init_maps function only cares about symbols from input
4331 BFDs. We must make a note of this generated mapping symbol
4332 ourselves so that code byteswapping works properly in
4333 elf32_arm_write_section. */
4334 elf32_arm_section_map_add (s, 'a', 0);
4335 }
4336
4337 s->size += VFP11_ERRATUM_VENEER_SIZE;
4338 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
4339 hash_table->num_vfp11_fixes++;
4340
4341 /* The offset of the veneer. */
4342 return val;
4343 }
4344
4345 /* Note: we do not include the flag SEC_LINKER_CREATED, as that
4346 would prevent elf_link_input_bfd() from processing the contents
4347 of the section. */
4348 #define ARM_GLUE_SECTION_FLAGS \
4349 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY)
4350
4351 /* Create a fake section for use by the ARM backend of the linker. */
4352
4353 static bfd_boolean
4354 arm_make_glue_section (bfd * abfd, const char * name)
4355 {
4356 asection * sec;
4357
4358 sec = bfd_get_section_by_name (abfd, name);
4359 if (sec != NULL)
4360 /* Already made. */
4361 return TRUE;
4362
4363 sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS);
4364
4365 if (sec == NULL
4366 || !bfd_set_section_alignment (abfd, sec, 2))
4367 return FALSE;
4368
4369 /* Set the gc mark to prevent the section from being removed by garbage
4370 collection, despite the fact that no relocs refer to this section. */
4371 sec->gc_mark = 1;
4372
4373 return TRUE;
4374 }
4375
4376 /* Add the glue sections to ABFD. This function is called from the
4377 linker scripts in ld/emultempl/{armelf}.em. */
4378
4379 bfd_boolean
4380 bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
4381 struct bfd_link_info *info)
4382 {
4383 /* If we are only performing a partial
4384 link do not bother adding the glue. */
4385 if (info->relocatable)
4386 return TRUE;
4387
4388 /* Linker stubs don't need glue. */
4389 if (!strcmp (abfd->filename, "linker stubs"))
4390 return TRUE;
4391
4392 return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME)
4393 && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME)
4394 && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME)
4395 && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME);
4396 }
4397
4398 /* Select a BFD to be used to hold the sections used by the glue code.
4399 This function is called from the linker scripts in ld/emultempl/
4400 {armelf/pe}.em. */
4401
4402 bfd_boolean
4403 bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
4404 {
4405 struct elf32_arm_link_hash_table *globals;
4406
4407 /* If we are only performing a partial link
4408 do not bother getting a bfd to hold the glue. */
4409 if (info->relocatable)
4410 return TRUE;
4411
4412 /* Make sure we don't attach the glue sections to a dynamic object. */
4413 BFD_ASSERT (!(abfd->flags & DYNAMIC));
4414
4415 globals = elf32_arm_hash_table (info);
4416
4417 BFD_ASSERT (globals != NULL);
4418
4419 if (globals->bfd_of_glue_owner != NULL)
4420 return TRUE;
4421
4422 /* Save the bfd for later use. */
4423 globals->bfd_of_glue_owner = abfd;
4424
4425 return TRUE;
4426 }
4427
4428 static void
4429 check_use_blx (struct elf32_arm_link_hash_table *globals)
4430 {
4431 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4432 Tag_CPU_arch) > 2)
4433 globals->use_blx = 1;
4434 }
4435
4436 bfd_boolean
4437 bfd_elf32_arm_process_before_allocation (bfd *abfd,
4438 struct bfd_link_info *link_info)
4439 {
4440 Elf_Internal_Shdr *symtab_hdr;
4441 Elf_Internal_Rela *internal_relocs = NULL;
4442 Elf_Internal_Rela *irel, *irelend;
4443 bfd_byte *contents = NULL;
4444
4445 asection *sec;
4446 struct elf32_arm_link_hash_table *globals;
4447
4448 /* If we are only performing a partial link do not bother
4449 to construct any glue. */
4450 if (link_info->relocatable)
4451 return TRUE;
4452
4453 /* Here we have a bfd that is to be included on the link. We have a
4454 hook to do reloc rummaging, before section sizes are nailed down. */
4455 globals = elf32_arm_hash_table (link_info);
4456
4457 BFD_ASSERT (globals != NULL);
4458
4459 check_use_blx (globals);
4460
4461 if (globals->byteswap_code && !bfd_big_endian (abfd))
4462 {
4463 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4464 abfd);
4465 return FALSE;
4466 }
4467
4468 /* PR 5398: If we have not decided to include any loadable sections in
4469 the output then we will not have a glue owner bfd. This is OK, it
4470 just means that there is nothing else for us to do here. */
4471 if (globals->bfd_of_glue_owner == NULL)
4472 return TRUE;
4473
4474 /* Rummage around all the relocs and map the glue vectors. */
4475 sec = abfd->sections;
4476
4477 if (sec == NULL)
4478 return TRUE;
4479
4480 for (; sec != NULL; sec = sec->next)
4481 {
4482 if (sec->reloc_count == 0)
4483 continue;
4484
4485 if ((sec->flags & SEC_EXCLUDE) != 0)
4486 continue;
4487
4488 symtab_hdr = & elf_symtab_hdr (abfd);
4489
4490 /* Load the relocs. */
4491 internal_relocs
4492 = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE);
4493
4494 if (internal_relocs == NULL)
4495 goto error_return;
4496
4497 irelend = internal_relocs + sec->reloc_count;
4498 for (irel = internal_relocs; irel < irelend; irel++)
4499 {
4500 long r_type;
4501 unsigned long r_index;
4502
4503 struct elf_link_hash_entry *h;
4504
4505 r_type = ELF32_R_TYPE (irel->r_info);
4506 r_index = ELF32_R_SYM (irel->r_info);
4507
4508 /* These are the only relocation types we care about. */
4509 if ( r_type != R_ARM_PC24
4510 && r_type != R_ARM_PLT32
4511 && r_type != R_ARM_JUMP24
4512 && r_type != R_ARM_THM_JUMP24
4513 && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
4514 continue;
4515
4516 /* Get the section contents if we haven't done so already. */
4517 if (contents == NULL)
4518 {
4519 /* Get cached copy if it exists. */
4520 if (elf_section_data (sec)->this_hdr.contents != NULL)
4521 contents = elf_section_data (sec)->this_hdr.contents;
4522 else
4523 {
4524 /* Go get them off disk. */
4525 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
4526 goto error_return;
4527 }
4528 }
4529
4530 if (r_type == R_ARM_V4BX)
4531 {
4532 int reg;
4533
4534 reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
4535 record_arm_bx_glue (link_info, reg);
4536 continue;
4537 }
4538
4539 /* If the relocation is not against a symbol it cannot concern us. */
4540 h = NULL;
4541
4542 /* We don't care about local symbols. */
4543 if (r_index < symtab_hdr->sh_info)
4544 continue;
4545
4546 /* This is an external symbol. */
4547 r_index -= symtab_hdr->sh_info;
4548 h = (struct elf_link_hash_entry *)
4549 elf_sym_hashes (abfd)[r_index];
4550
4551 /* If the relocation is against a static symbol it must be within
4552 the current section and so cannot be a cross ARM/Thumb relocation. */
4553 if (h == NULL)
4554 continue;
4555
4556 /* If the call will go through a PLT entry then we do not need
4557 glue. */
4558 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
4559 continue;
4560
4561 switch (r_type)
4562 {
4563 case R_ARM_PC24:
4564 case R_ARM_PLT32:
4565 case R_ARM_JUMP24:
4566 /* This one is a call from arm code. We need to look up
4567 the target of the call. If it is a thumb target, we
4568 insert glue. */
4569 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
4570 && !(r_type == R_ARM_CALL && globals->use_blx))
4571 record_arm_to_thumb_glue (link_info, h);
4572 break;
4573
4574 case R_ARM_THM_JUMP24:
4575 /* This one is a call from thumb code. We look
4576 up the target of the call. If it is not a thumb
4577 target, we insert glue. */
4578 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
4579 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
4580 && h->root.type != bfd_link_hash_undefweak)
4581 record_thumb_to_arm_glue (link_info, h);
4582 break;
4583
4584 default:
4585 abort ();
4586 }
4587 }
4588
4589 if (contents != NULL
4590 && elf_section_data (sec)->this_hdr.contents != contents)
4591 free (contents);
4592 contents = NULL;
4593
4594 if (internal_relocs != NULL
4595 && elf_section_data (sec)->relocs != internal_relocs)
4596 free (internal_relocs);
4597 internal_relocs = NULL;
4598 }
4599
4600 return TRUE;
4601
4602 error_return:
4603 if (contents != NULL
4604 && elf_section_data (sec)->this_hdr.contents != contents)
4605 free (contents);
4606 if (internal_relocs != NULL
4607 && elf_section_data (sec)->relocs != internal_relocs)
4608 free (internal_relocs);
4609
4610 return FALSE;
4611 }
4612 #endif
4613
4614
4615 /* Initialise maps of ARM/Thumb/data for input BFDs. */
4616
4617 void
4618 bfd_elf32_arm_init_maps (bfd *abfd)
4619 {
4620 Elf_Internal_Sym *isymbuf;
4621 Elf_Internal_Shdr *hdr;
4622 unsigned int i, localsyms;
4623
4624 if ((abfd->flags & DYNAMIC) != 0)
4625 return;
4626
4627 hdr = & elf_symtab_hdr (abfd);
4628 localsyms = hdr->sh_info;
4629
4630 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4631 should contain the number of local symbols, which should come before any
4632 global symbols. Mapping symbols are always local. */
4633 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
4634 NULL);
4635
4636 /* No internal symbols read? Skip this BFD. */
4637 if (isymbuf == NULL)
4638 return;
4639
4640 for (i = 0; i < localsyms; i++)
4641 {
4642 Elf_Internal_Sym *isym = &isymbuf[i];
4643 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4644 const char *name;
4645
4646 if (sec != NULL
4647 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4648 {
4649 name = bfd_elf_string_from_elf_section (abfd,
4650 hdr->sh_link, isym->st_name);
4651
4652 if (bfd_is_arm_special_symbol_name (name,
4653 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
4654 elf32_arm_section_map_add (sec, name[1], isym->st_value);
4655 }
4656 }
4657 }
4658
4659
4660 void
4661 bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
4662 {
4663 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
4664 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
4665
4666 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4667 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
4668 {
4669 switch (globals->vfp11_fix)
4670 {
4671 case BFD_ARM_VFP11_FIX_DEFAULT:
4672 case BFD_ARM_VFP11_FIX_NONE:
4673 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4674 break;
4675
4676 default:
4677 /* Give a warning, but do as the user requests anyway. */
4678 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
4679 "workaround is not necessary for target architecture"), obfd);
4680 }
4681 }
4682 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
4683 /* For earlier architectures, we might need the workaround, but do not
4684 enable it by default. If users is running with broken hardware, they
4685 must enable the erratum fix explicitly. */
4686 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4687 }
4688
4689
4690 enum bfd_arm_vfp11_pipe
4691 {
4692 VFP11_FMAC,
4693 VFP11_LS,
4694 VFP11_DS,
4695 VFP11_BAD
4696 };
4697
4698 /* Return a VFP register number. This is encoded as RX:X for single-precision
4699 registers, or X:RX for double-precision registers, where RX is the group of
4700 four bits in the instruction encoding and X is the single extension bit.
4701 RX and X fields are specified using their lowest (starting) bit. The return
4702 value is:
4703
4704 0...31: single-precision registers s0...s31
4705 32...63: double-precision registers d0...d31.
4706
4707 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4708 encounter VFP3 instructions, so we allow the full range for DP registers. */
4709
4710 static unsigned int
4711 bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
4712 unsigned int x)
4713 {
4714 if (is_double)
4715 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
4716 else
4717 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
4718 }
4719
4720 /* Set bits in *WMASK according to a register number REG as encoded by
4721 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4722
4723 static void
4724 bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
4725 {
4726 if (reg < 32)
4727 *wmask |= 1 << reg;
4728 else if (reg < 48)
4729 *wmask |= 3 << ((reg - 32) * 2);
4730 }
4731
4732 /* Return TRUE if WMASK overwrites anything in REGS. */
4733
4734 static bfd_boolean
4735 bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
4736 {
4737 int i;
4738
4739 for (i = 0; i < numregs; i++)
4740 {
4741 unsigned int reg = regs[i];
4742
4743 if (reg < 32 && (wmask & (1 << reg)) != 0)
4744 return TRUE;
4745
4746 reg -= 32;
4747
4748 if (reg >= 16)
4749 continue;
4750
4751 if ((wmask & (3 << (reg * 2))) != 0)
4752 return TRUE;
4753 }
4754
4755 return FALSE;
4756 }
4757
4758 /* In this function, we're interested in two things: finding input registers
4759 for VFP data-processing instructions, and finding the set of registers which
4760 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4761 hold the written set, so FLDM etc. are easy to deal with (we're only
4762 interested in 32 SP registers or 16 dp registers, due to the VFP version
4763 implemented by the chip in question). DP registers are marked by setting
4764 both SP registers in the write mask). */
4765
4766 static enum bfd_arm_vfp11_pipe
4767 bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
4768 int *numregs)
4769 {
4770 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
4771 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
4772
4773 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4774 {
4775 unsigned int pqrs;
4776 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4777 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4778
4779 pqrs = ((insn & 0x00800000) >> 20)
4780 | ((insn & 0x00300000) >> 19)
4781 | ((insn & 0x00000040) >> 6);
4782
4783 switch (pqrs)
4784 {
4785 case 0: /* fmac[sd]. */
4786 case 1: /* fnmac[sd]. */
4787 case 2: /* fmsc[sd]. */
4788 case 3: /* fnmsc[sd]. */
4789 pipe = VFP11_FMAC;
4790 bfd_arm_vfp11_write_mask (destmask, fd);
4791 regs[0] = fd;
4792 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4793 regs[2] = fm;
4794 *numregs = 3;
4795 break;
4796
4797 case 4: /* fmul[sd]. */
4798 case 5: /* fnmul[sd]. */
4799 case 6: /* fadd[sd]. */
4800 case 7: /* fsub[sd]. */
4801 pipe = VFP11_FMAC;
4802 goto vfp_binop;
4803
4804 case 8: /* fdiv[sd]. */
4805 pipe = VFP11_DS;
4806 vfp_binop:
4807 bfd_arm_vfp11_write_mask (destmask, fd);
4808 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4809 regs[1] = fm;
4810 *numregs = 2;
4811 break;
4812
4813 case 15: /* extended opcode. */
4814 {
4815 unsigned int extn = ((insn >> 15) & 0x1e)
4816 | ((insn >> 7) & 1);
4817
4818 switch (extn)
4819 {
4820 case 0: /* fcpy[sd]. */
4821 case 1: /* fabs[sd]. */
4822 case 2: /* fneg[sd]. */
4823 case 8: /* fcmp[sd]. */
4824 case 9: /* fcmpe[sd]. */
4825 case 10: /* fcmpz[sd]. */
4826 case 11: /* fcmpez[sd]. */
4827 case 16: /* fuito[sd]. */
4828 case 17: /* fsito[sd]. */
4829 case 24: /* ftoui[sd]. */
4830 case 25: /* ftouiz[sd]. */
4831 case 26: /* ftosi[sd]. */
4832 case 27: /* ftosiz[sd]. */
4833 /* These instructions will not bounce due to underflow. */
4834 *numregs = 0;
4835 pipe = VFP11_FMAC;
4836 break;
4837
4838 case 3: /* fsqrt[sd]. */
4839 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4840 registers to cause the erratum in previous instructions. */
4841 bfd_arm_vfp11_write_mask (destmask, fd);
4842 pipe = VFP11_DS;
4843 break;
4844
4845 case 15: /* fcvt{ds,sd}. */
4846 {
4847 int rnum = 0;
4848
4849 bfd_arm_vfp11_write_mask (destmask, fd);
4850
4851 /* Only FCVTSD can underflow. */
4852 if ((insn & 0x100) != 0)
4853 regs[rnum++] = fm;
4854
4855 *numregs = rnum;
4856
4857 pipe = VFP11_FMAC;
4858 }
4859 break;
4860
4861 default:
4862 return VFP11_BAD;
4863 }
4864 }
4865 break;
4866
4867 default:
4868 return VFP11_BAD;
4869 }
4870 }
4871 /* Two-register transfer. */
4872 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
4873 {
4874 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4875
4876 if ((insn & 0x100000) == 0)
4877 {
4878 if (is_double)
4879 bfd_arm_vfp11_write_mask (destmask, fm);
4880 else
4881 {
4882 bfd_arm_vfp11_write_mask (destmask, fm);
4883 bfd_arm_vfp11_write_mask (destmask, fm + 1);
4884 }
4885 }
4886
4887 pipe = VFP11_LS;
4888 }
4889 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
4890 {
4891 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4892 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
4893
4894 switch (puw)
4895 {
4896 case 0: /* Two-reg transfer. We should catch these above. */
4897 abort ();
4898
4899 case 2: /* fldm[sdx]. */
4900 case 3:
4901 case 5:
4902 {
4903 unsigned int i, offset = insn & 0xff;
4904
4905 if (is_double)
4906 offset >>= 1;
4907
4908 for (i = fd; i < fd + offset; i++)
4909 bfd_arm_vfp11_write_mask (destmask, i);
4910 }
4911 break;
4912
4913 case 4: /* fld[sd]. */
4914 case 6:
4915 bfd_arm_vfp11_write_mask (destmask, fd);
4916 break;
4917
4918 default:
4919 return VFP11_BAD;
4920 }
4921
4922 pipe = VFP11_LS;
4923 }
4924 /* Single-register transfer. Note L==0. */
4925 else if ((insn & 0x0f100e10) == 0x0e000a10)
4926 {
4927 unsigned int opcode = (insn >> 21) & 7;
4928 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
4929
4930 switch (opcode)
4931 {
4932 case 0: /* fmsr/fmdlr. */
4933 case 1: /* fmdhr. */
4934 /* Mark fmdhr and fmdlr as writing to the whole of the DP
4935 destination register. I don't know if this is exactly right,
4936 but it is the conservative choice. */
4937 bfd_arm_vfp11_write_mask (destmask, fn);
4938 break;
4939
4940 case 7: /* fmxr. */
4941 break;
4942 }
4943
4944 pipe = VFP11_LS;
4945 }
4946
4947 return pipe;
4948 }
4949
4950
4951 static int elf32_arm_compare_mapping (const void * a, const void * b);
4952
4953
4954 /* Look for potentially-troublesome code sequences which might trigger the
4955 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
4956 (available from ARM) for details of the erratum. A short version is
4957 described in ld.texinfo. */
4958
4959 bfd_boolean
4960 bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
4961 {
4962 asection *sec;
4963 bfd_byte *contents = NULL;
4964 int state = 0;
4965 int regs[3], numregs = 0;
4966 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
4967 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
4968
4969 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
4970 The states transition as follows:
4971
4972 0 -> 1 (vector) or 0 -> 2 (scalar)
4973 A VFP FMAC-pipeline instruction has been seen. Fill
4974 regs[0]..regs[numregs-1] with its input operands. Remember this
4975 instruction in 'first_fmac'.
4976
4977 1 -> 2
4978 Any instruction, except for a VFP instruction which overwrites
4979 regs[*].
4980
4981 1 -> 3 [ -> 0 ] or
4982 2 -> 3 [ -> 0 ]
4983 A VFP instruction has been seen which overwrites any of regs[*].
4984 We must make a veneer! Reset state to 0 before examining next
4985 instruction.
4986
4987 2 -> 0
4988 If we fail to match anything in state 2, reset to state 0 and reset
4989 the instruction pointer to the instruction after 'first_fmac'.
4990
4991 If the VFP11 vector mode is in use, there must be at least two unrelated
4992 instructions between anti-dependent VFP11 instructions to properly avoid
4993 triggering the erratum, hence the use of the extra state 1. */
4994
4995 /* If we are only performing a partial link do not bother
4996 to construct any glue. */
4997 if (link_info->relocatable)
4998 return TRUE;
4999
5000 /* Skip if this bfd does not correspond to an ELF image. */
5001 if (! is_arm_elf (abfd))
5002 return TRUE;
5003
5004 /* We should have chosen a fix type by the time we get here. */
5005 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
5006
5007 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
5008 return TRUE;
5009
5010 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5011 {
5012 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
5013 struct _arm_elf_section_data *sec_data;
5014
5015 /* If we don't have executable progbits, we're not interested in this
5016 section. Also skip if section is to be excluded. */
5017 if (elf_section_type (sec) != SHT_PROGBITS
5018 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
5019 || (sec->flags & SEC_EXCLUDE) != 0
5020 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
5021 continue;
5022
5023 sec_data = elf32_arm_section_data (sec);
5024
5025 if (sec_data->mapcount == 0)
5026 continue;
5027
5028 if (elf_section_data (sec)->this_hdr.contents != NULL)
5029 contents = elf_section_data (sec)->this_hdr.contents;
5030 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
5031 goto error_return;
5032
5033 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
5034 elf32_arm_compare_mapping);
5035
5036 for (span = 0; span < sec_data->mapcount; span++)
5037 {
5038 unsigned int span_start = sec_data->map[span].vma;
5039 unsigned int span_end = (span == sec_data->mapcount - 1)
5040 ? sec->size : sec_data->map[span + 1].vma;
5041 char span_type = sec_data->map[span].type;
5042
5043 /* FIXME: Only ARM mode is supported at present. We may need to
5044 support Thumb-2 mode also at some point. */
5045 if (span_type != 'a')
5046 continue;
5047
5048 for (i = span_start; i < span_end;)
5049 {
5050 unsigned int next_i = i + 4;
5051 unsigned int insn = bfd_big_endian (abfd)
5052 ? (contents[i] << 24)
5053 | (contents[i + 1] << 16)
5054 | (contents[i + 2] << 8)
5055 | contents[i + 3]
5056 : (contents[i + 3] << 24)
5057 | (contents[i + 2] << 16)
5058 | (contents[i + 1] << 8)
5059 | contents[i];
5060 unsigned int writemask = 0;
5061 enum bfd_arm_vfp11_pipe pipe;
5062
5063 switch (state)
5064 {
5065 case 0:
5066 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
5067 &numregs);
5068 /* I'm assuming the VFP11 erratum can trigger with denorm
5069 operands on either the FMAC or the DS pipeline. This might
5070 lead to slightly overenthusiastic veneer insertion. */
5071 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
5072 {
5073 state = use_vector ? 1 : 2;
5074 first_fmac = i;
5075 veneer_of_insn = insn;
5076 }
5077 break;
5078
5079 case 1:
5080 {
5081 int other_regs[3], other_numregs;
5082 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5083 other_regs,
5084 &other_numregs);
5085 if (pipe != VFP11_BAD
5086 && bfd_arm_vfp11_antidependency (writemask, regs,
5087 numregs))
5088 state = 3;
5089 else
5090 state = 2;
5091 }
5092 break;
5093
5094 case 2:
5095 {
5096 int other_regs[3], other_numregs;
5097 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5098 other_regs,
5099 &other_numregs);
5100 if (pipe != VFP11_BAD
5101 && bfd_arm_vfp11_antidependency (writemask, regs,
5102 numregs))
5103 state = 3;
5104 else
5105 {
5106 state = 0;
5107 next_i = first_fmac + 4;
5108 }
5109 }
5110 break;
5111
5112 case 3:
5113 abort (); /* Should be unreachable. */
5114 }
5115
5116 if (state == 3)
5117 {
5118 elf32_vfp11_erratum_list *newerr
5119 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
5120 int errcount;
5121
5122 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
5123
5124 newerr->u.b.vfp_insn = veneer_of_insn;
5125
5126 switch (span_type)
5127 {
5128 case 'a':
5129 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
5130 break;
5131
5132 default:
5133 abort ();
5134 }
5135
5136 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
5137 first_fmac);
5138
5139 newerr->vma = -1;
5140
5141 newerr->next = sec_data->erratumlist;
5142 sec_data->erratumlist = newerr;
5143
5144 state = 0;
5145 }
5146
5147 i = next_i;
5148 }
5149 }
5150
5151 if (contents != NULL
5152 && elf_section_data (sec)->this_hdr.contents != contents)
5153 free (contents);
5154 contents = NULL;
5155 }
5156
5157 return TRUE;
5158
5159 error_return:
5160 if (contents != NULL
5161 && elf_section_data (sec)->this_hdr.contents != contents)
5162 free (contents);
5163
5164 return FALSE;
5165 }
5166
5167 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5168 after sections have been laid out, using specially-named symbols. */
5169
5170 void
5171 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
5172 struct bfd_link_info *link_info)
5173 {
5174 asection *sec;
5175 struct elf32_arm_link_hash_table *globals;
5176 char *tmp_name;
5177
5178 if (link_info->relocatable)
5179 return;
5180
5181 /* Skip if this bfd does not correspond to an ELF image. */
5182 if (! is_arm_elf (abfd))
5183 return;
5184
5185 globals = elf32_arm_hash_table (link_info);
5186
5187 tmp_name = bfd_malloc ((bfd_size_type) strlen
5188 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
5189
5190 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5191 {
5192 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
5193 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
5194
5195 for (; errnode != NULL; errnode = errnode->next)
5196 {
5197 struct elf_link_hash_entry *myh;
5198 bfd_vma vma;
5199
5200 switch (errnode->type)
5201 {
5202 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
5203 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
5204 /* Find veneer symbol. */
5205 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
5206 errnode->u.b.veneer->u.v.id);
5207
5208 myh = elf_link_hash_lookup
5209 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5210
5211 if (myh == NULL)
5212 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5213 "`%s'"), abfd, tmp_name);
5214
5215 vma = myh->root.u.def.section->output_section->vma
5216 + myh->root.u.def.section->output_offset
5217 + myh->root.u.def.value;
5218
5219 errnode->u.b.veneer->vma = vma;
5220 break;
5221
5222 case VFP11_ERRATUM_ARM_VENEER:
5223 case VFP11_ERRATUM_THUMB_VENEER:
5224 /* Find return location. */
5225 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
5226 errnode->u.v.id);
5227
5228 myh = elf_link_hash_lookup
5229 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5230
5231 if (myh == NULL)
5232 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5233 "`%s'"), abfd, tmp_name);
5234
5235 vma = myh->root.u.def.section->output_section->vma
5236 + myh->root.u.def.section->output_offset
5237 + myh->root.u.def.value;
5238
5239 errnode->u.v.branch->vma = vma;
5240 break;
5241
5242 default:
5243 abort ();
5244 }
5245 }
5246 }
5247
5248 free (tmp_name);
5249 }
5250
5251
5252 /* Set target relocation values needed during linking. */
5253
5254 void
5255 bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
5256 struct bfd_link_info *link_info,
5257 int target1_is_rel,
5258 char * target2_type,
5259 int fix_v4bx,
5260 int use_blx,
5261 bfd_arm_vfp11_fix vfp11_fix,
5262 int no_enum_warn, int no_wchar_warn,
5263 int pic_veneer)
5264 {
5265 struct elf32_arm_link_hash_table *globals;
5266
5267 globals = elf32_arm_hash_table (link_info);
5268
5269 globals->target1_is_rel = target1_is_rel;
5270 if (strcmp (target2_type, "rel") == 0)
5271 globals->target2_reloc = R_ARM_REL32;
5272 else if (strcmp (target2_type, "abs") == 0)
5273 globals->target2_reloc = R_ARM_ABS32;
5274 else if (strcmp (target2_type, "got-rel") == 0)
5275 globals->target2_reloc = R_ARM_GOT_PREL;
5276 else
5277 {
5278 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5279 target2_type);
5280 }
5281 globals->fix_v4bx = fix_v4bx;
5282 globals->use_blx |= use_blx;
5283 globals->vfp11_fix = vfp11_fix;
5284 globals->pic_veneer = pic_veneer;
5285
5286 BFD_ASSERT (is_arm_elf (output_bfd));
5287 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
5288 elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
5289 }
5290
5291 /* Replace the target offset of a Thumb bl or b.w instruction. */
5292
5293 static void
5294 insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn)
5295 {
5296 bfd_vma upper;
5297 bfd_vma lower;
5298 int reloc_sign;
5299
5300 BFD_ASSERT ((offset & 1) == 0);
5301
5302 upper = bfd_get_16 (abfd, insn);
5303 lower = bfd_get_16 (abfd, insn + 2);
5304 reloc_sign = (offset < 0) ? 1 : 0;
5305 upper = (upper & ~(bfd_vma) 0x7ff)
5306 | ((offset >> 12) & 0x3ff)
5307 | (reloc_sign << 10);
5308 lower = (lower & ~(bfd_vma) 0x2fff)
5309 | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13)
5310 | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11)
5311 | ((offset >> 1) & 0x7ff);
5312 bfd_put_16 (abfd, upper, insn);
5313 bfd_put_16 (abfd, lower, insn + 2);
5314 }
5315
5316 /* Thumb code calling an ARM function. */
5317
5318 static int
5319 elf32_thumb_to_arm_stub (struct bfd_link_info * info,
5320 const char * name,
5321 bfd * input_bfd,
5322 bfd * output_bfd,
5323 asection * input_section,
5324 bfd_byte * hit_data,
5325 asection * sym_sec,
5326 bfd_vma offset,
5327 bfd_signed_vma addend,
5328 bfd_vma val,
5329 char **error_message)
5330 {
5331 asection * s = 0;
5332 bfd_vma my_offset;
5333 long int ret_offset;
5334 struct elf_link_hash_entry * myh;
5335 struct elf32_arm_link_hash_table * globals;
5336
5337 myh = find_thumb_glue (info, name, error_message);
5338 if (myh == NULL)
5339 return FALSE;
5340
5341 globals = elf32_arm_hash_table (info);
5342
5343 BFD_ASSERT (globals != NULL);
5344 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5345
5346 my_offset = myh->root.u.def.value;
5347
5348 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5349 THUMB2ARM_GLUE_SECTION_NAME);
5350
5351 BFD_ASSERT (s != NULL);
5352 BFD_ASSERT (s->contents != NULL);
5353 BFD_ASSERT (s->output_section != NULL);
5354
5355 if ((my_offset & 0x01) == 0x01)
5356 {
5357 if (sym_sec != NULL
5358 && sym_sec->owner != NULL
5359 && !INTERWORK_FLAG (sym_sec->owner))
5360 {
5361 (*_bfd_error_handler)
5362 (_("%B(%s): warning: interworking not enabled.\n"
5363 " first occurrence: %B: thumb call to arm"),
5364 sym_sec->owner, input_bfd, name);
5365
5366 return FALSE;
5367 }
5368
5369 --my_offset;
5370 myh->root.u.def.value = my_offset;
5371
5372 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
5373 s->contents + my_offset);
5374
5375 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
5376 s->contents + my_offset + 2);
5377
5378 ret_offset =
5379 /* Address of destination of the stub. */
5380 ((bfd_signed_vma) val)
5381 - ((bfd_signed_vma)
5382 /* Offset from the start of the current section
5383 to the start of the stubs. */
5384 (s->output_offset
5385 /* Offset of the start of this stub from the start of the stubs. */
5386 + my_offset
5387 /* Address of the start of the current section. */
5388 + s->output_section->vma)
5389 /* The branch instruction is 4 bytes into the stub. */
5390 + 4
5391 /* ARM branches work from the pc of the instruction + 8. */
5392 + 8);
5393
5394 put_arm_insn (globals, output_bfd,
5395 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
5396 s->contents + my_offset + 4);
5397 }
5398
5399 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
5400
5401 /* Now go back and fix up the original BL insn to point to here. */
5402 ret_offset =
5403 /* Address of where the stub is located. */
5404 (s->output_section->vma + s->output_offset + my_offset)
5405 /* Address of where the BL is located. */
5406 - (input_section->output_section->vma + input_section->output_offset
5407 + offset)
5408 /* Addend in the relocation. */
5409 - addend
5410 /* Biassing for PC-relative addressing. */
5411 - 8;
5412
5413 insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma);
5414
5415 return TRUE;
5416 }
5417
5418 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
5419
5420 static struct elf_link_hash_entry *
5421 elf32_arm_create_thumb_stub (struct bfd_link_info * info,
5422 const char * name,
5423 bfd * input_bfd,
5424 bfd * output_bfd,
5425 asection * sym_sec,
5426 bfd_vma val,
5427 asection * s,
5428 char ** error_message)
5429 {
5430 bfd_vma my_offset;
5431 long int ret_offset;
5432 struct elf_link_hash_entry * myh;
5433 struct elf32_arm_link_hash_table * globals;
5434
5435 myh = find_arm_glue (info, name, error_message);
5436 if (myh == NULL)
5437 return NULL;
5438
5439 globals = elf32_arm_hash_table (info);
5440
5441 BFD_ASSERT (globals != NULL);
5442 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5443
5444 my_offset = myh->root.u.def.value;
5445
5446 if ((my_offset & 0x01) == 0x01)
5447 {
5448 if (sym_sec != NULL
5449 && sym_sec->owner != NULL
5450 && !INTERWORK_FLAG (sym_sec->owner))
5451 {
5452 (*_bfd_error_handler)
5453 (_("%B(%s): warning: interworking not enabled.\n"
5454 " first occurrence: %B: arm call to thumb"),
5455 sym_sec->owner, input_bfd, name);
5456 }
5457
5458 --my_offset;
5459 myh->root.u.def.value = my_offset;
5460
5461 if (info->shared || globals->root.is_relocatable_executable
5462 || globals->pic_veneer)
5463 {
5464 /* For relocatable objects we can't use absolute addresses,
5465 so construct the address from a relative offset. */
5466 /* TODO: If the offset is small it's probably worth
5467 constructing the address with adds. */
5468 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
5469 s->contents + my_offset);
5470 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
5471 s->contents + my_offset + 4);
5472 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
5473 s->contents + my_offset + 8);
5474 /* Adjust the offset by 4 for the position of the add,
5475 and 8 for the pipeline offset. */
5476 ret_offset = (val - (s->output_offset
5477 + s->output_section->vma
5478 + my_offset + 12))
5479 | 1;
5480 bfd_put_32 (output_bfd, ret_offset,
5481 s->contents + my_offset + 12);
5482 }
5483 else if (globals->use_blx)
5484 {
5485 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
5486 s->contents + my_offset);
5487
5488 /* It's a thumb address. Add the low order bit. */
5489 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
5490 s->contents + my_offset + 4);
5491 }
5492 else
5493 {
5494 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
5495 s->contents + my_offset);
5496
5497 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
5498 s->contents + my_offset + 4);
5499
5500 /* It's a thumb address. Add the low order bit. */
5501 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
5502 s->contents + my_offset + 8);
5503
5504 my_offset += 12;
5505 }
5506 }
5507
5508 BFD_ASSERT (my_offset <= globals->arm_glue_size);
5509
5510 return myh;
5511 }
5512
5513 /* Arm code calling a Thumb function. */
5514
5515 static int
5516 elf32_arm_to_thumb_stub (struct bfd_link_info * info,
5517 const char * name,
5518 bfd * input_bfd,
5519 bfd * output_bfd,
5520 asection * input_section,
5521 bfd_byte * hit_data,
5522 asection * sym_sec,
5523 bfd_vma offset,
5524 bfd_signed_vma addend,
5525 bfd_vma val,
5526 char **error_message)
5527 {
5528 unsigned long int tmp;
5529 bfd_vma my_offset;
5530 asection * s;
5531 long int ret_offset;
5532 struct elf_link_hash_entry * myh;
5533 struct elf32_arm_link_hash_table * globals;
5534
5535 globals = elf32_arm_hash_table (info);
5536
5537 BFD_ASSERT (globals != NULL);
5538 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5539
5540 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5541 ARM2THUMB_GLUE_SECTION_NAME);
5542 BFD_ASSERT (s != NULL);
5543 BFD_ASSERT (s->contents != NULL);
5544 BFD_ASSERT (s->output_section != NULL);
5545
5546 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
5547 sym_sec, val, s, error_message);
5548 if (!myh)
5549 return FALSE;
5550
5551 my_offset = myh->root.u.def.value;
5552 tmp = bfd_get_32 (input_bfd, hit_data);
5553 tmp = tmp & 0xFF000000;
5554
5555 /* Somehow these are both 4 too far, so subtract 8. */
5556 ret_offset = (s->output_offset
5557 + my_offset
5558 + s->output_section->vma
5559 - (input_section->output_offset
5560 + input_section->output_section->vma
5561 + offset + addend)
5562 - 8);
5563
5564 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
5565
5566 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
5567
5568 return TRUE;
5569 }
5570
5571 /* Populate Arm stub for an exported Thumb function. */
5572
5573 static bfd_boolean
5574 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
5575 {
5576 struct bfd_link_info * info = (struct bfd_link_info *) inf;
5577 asection * s;
5578 struct elf_link_hash_entry * myh;
5579 struct elf32_arm_link_hash_entry *eh;
5580 struct elf32_arm_link_hash_table * globals;
5581 asection *sec;
5582 bfd_vma val;
5583 char *error_message;
5584
5585 eh = elf32_arm_hash_entry (h);
5586 /* Allocate stubs for exported Thumb functions on v4t. */
5587 if (eh->export_glue == NULL)
5588 return TRUE;
5589
5590 globals = elf32_arm_hash_table (info);
5591
5592 BFD_ASSERT (globals != NULL);
5593 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5594
5595 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5596 ARM2THUMB_GLUE_SECTION_NAME);
5597 BFD_ASSERT (s != NULL);
5598 BFD_ASSERT (s->contents != NULL);
5599 BFD_ASSERT (s->output_section != NULL);
5600
5601 sec = eh->export_glue->root.u.def.section;
5602
5603 BFD_ASSERT (sec->output_section != NULL);
5604
5605 val = eh->export_glue->root.u.def.value + sec->output_offset
5606 + sec->output_section->vma;
5607
5608 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
5609 h->root.u.def.section->owner,
5610 globals->obfd, sec, val, s,
5611 &error_message);
5612 BFD_ASSERT (myh);
5613 return TRUE;
5614 }
5615
5616 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5617
5618 static bfd_vma
5619 elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
5620 {
5621 bfd_byte *p;
5622 bfd_vma glue_addr;
5623 asection *s;
5624 struct elf32_arm_link_hash_table *globals;
5625
5626 globals = elf32_arm_hash_table (info);
5627
5628 BFD_ASSERT (globals != NULL);
5629 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5630
5631 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5632 ARM_BX_GLUE_SECTION_NAME);
5633 BFD_ASSERT (s != NULL);
5634 BFD_ASSERT (s->contents != NULL);
5635 BFD_ASSERT (s->output_section != NULL);
5636
5637 BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
5638
5639 glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
5640
5641 if ((globals->bx_glue_offset[reg] & 1) == 0)
5642 {
5643 p = s->contents + glue_addr;
5644 bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
5645 bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
5646 bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
5647 globals->bx_glue_offset[reg] |= 1;
5648 }
5649
5650 return glue_addr + s->output_section->vma + s->output_offset;
5651 }
5652
5653 /* Generate Arm stubs for exported Thumb symbols. */
5654 static void
5655 elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
5656 struct bfd_link_info *link_info)
5657 {
5658 struct elf32_arm_link_hash_table * globals;
5659
5660 if (link_info == NULL)
5661 /* Ignore this if we are not called by the ELF backend linker. */
5662 return;
5663
5664 globals = elf32_arm_hash_table (link_info);
5665 /* If blx is available then exported Thumb symbols are OK and there is
5666 nothing to do. */
5667 if (globals->use_blx)
5668 return;
5669
5670 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
5671 link_info);
5672 }
5673
5674 /* Some relocations map to different relocations depending on the
5675 target. Return the real relocation. */
5676
5677 static int
5678 arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
5679 int r_type)
5680 {
5681 switch (r_type)
5682 {
5683 case R_ARM_TARGET1:
5684 if (globals->target1_is_rel)
5685 return R_ARM_REL32;
5686 else
5687 return R_ARM_ABS32;
5688
5689 case R_ARM_TARGET2:
5690 return globals->target2_reloc;
5691
5692 default:
5693 return r_type;
5694 }
5695 }
5696
5697 /* Return the base VMA address which should be subtracted from real addresses
5698 when resolving @dtpoff relocation.
5699 This is PT_TLS segment p_vaddr. */
5700
5701 static bfd_vma
5702 dtpoff_base (struct bfd_link_info *info)
5703 {
5704 /* If tls_sec is NULL, we should have signalled an error already. */
5705 if (elf_hash_table (info)->tls_sec == NULL)
5706 return 0;
5707 return elf_hash_table (info)->tls_sec->vma;
5708 }
5709
5710 /* Return the relocation value for @tpoff relocation
5711 if STT_TLS virtual address is ADDRESS. */
5712
5713 static bfd_vma
5714 tpoff (struct bfd_link_info *info, bfd_vma address)
5715 {
5716 struct elf_link_hash_table *htab = elf_hash_table (info);
5717 bfd_vma base;
5718
5719 /* If tls_sec is NULL, we should have signalled an error already. */
5720 if (htab->tls_sec == NULL)
5721 return 0;
5722 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
5723 return address - htab->tls_sec->vma + base;
5724 }
5725
5726 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5727 VALUE is the relocation value. */
5728
5729 static bfd_reloc_status_type
5730 elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
5731 {
5732 if (value > 0xfff)
5733 return bfd_reloc_overflow;
5734
5735 value |= bfd_get_32 (abfd, data) & 0xfffff000;
5736 bfd_put_32 (abfd, value, data);
5737 return bfd_reloc_ok;
5738 }
5739
5740 /* For a given value of n, calculate the value of G_n as required to
5741 deal with group relocations. We return it in the form of an
5742 encoded constant-and-rotation, together with the final residual. If n is
5743 specified as less than zero, then final_residual is filled with the
5744 input value and no further action is performed. */
5745
5746 static bfd_vma
5747 calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
5748 {
5749 int current_n;
5750 bfd_vma g_n;
5751 bfd_vma encoded_g_n = 0;
5752 bfd_vma residual = value; /* Also known as Y_n. */
5753
5754 for (current_n = 0; current_n <= n; current_n++)
5755 {
5756 int shift;
5757
5758 /* Calculate which part of the value to mask. */
5759 if (residual == 0)
5760 shift = 0;
5761 else
5762 {
5763 int msb;
5764
5765 /* Determine the most significant bit in the residual and
5766 align the resulting value to a 2-bit boundary. */
5767 for (msb = 30; msb >= 0; msb -= 2)
5768 if (residual & (3 << msb))
5769 break;
5770
5771 /* The desired shift is now (msb - 6), or zero, whichever
5772 is the greater. */
5773 shift = msb - 6;
5774 if (shift < 0)
5775 shift = 0;
5776 }
5777
5778 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5779 g_n = residual & (0xff << shift);
5780 encoded_g_n = (g_n >> shift)
5781 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
5782
5783 /* Calculate the residual for the next time around. */
5784 residual &= ~g_n;
5785 }
5786
5787 *final_residual = residual;
5788
5789 return encoded_g_n;
5790 }
5791
5792 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
5793 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
5794
5795 static int
5796 identify_add_or_sub (bfd_vma insn)
5797 {
5798 int opcode = insn & 0x1e00000;
5799
5800 if (opcode == 1 << 23) /* ADD */
5801 return 1;
5802
5803 if (opcode == 1 << 22) /* SUB */
5804 return -1;
5805
5806 return 0;
5807 }
5808
5809 /* Perform a relocation as part of a final link. */
5810
5811 static bfd_reloc_status_type
5812 elf32_arm_final_link_relocate (reloc_howto_type * howto,
5813 bfd * input_bfd,
5814 bfd * output_bfd,
5815 asection * input_section,
5816 bfd_byte * contents,
5817 Elf_Internal_Rela * rel,
5818 bfd_vma value,
5819 struct bfd_link_info * info,
5820 asection * sym_sec,
5821 const char * sym_name,
5822 int sym_flags,
5823 struct elf_link_hash_entry * h,
5824 bfd_boolean * unresolved_reloc_p,
5825 char ** error_message)
5826 {
5827 unsigned long r_type = howto->type;
5828 unsigned long r_symndx;
5829 bfd_byte * hit_data = contents + rel->r_offset;
5830 bfd * dynobj = NULL;
5831 Elf_Internal_Shdr * symtab_hdr;
5832 struct elf_link_hash_entry ** sym_hashes;
5833 bfd_vma * local_got_offsets;
5834 asection * sgot = NULL;
5835 asection * splt = NULL;
5836 asection * sreloc = NULL;
5837 bfd_vma addend;
5838 bfd_signed_vma signed_addend;
5839 struct elf32_arm_link_hash_table * globals;
5840
5841 globals = elf32_arm_hash_table (info);
5842
5843 BFD_ASSERT (is_arm_elf (input_bfd));
5844
5845 /* Some relocation types map to different relocations depending on the
5846 target. We pick the right one here. */
5847 r_type = arm_real_reloc_type (globals, r_type);
5848 if (r_type != howto->type)
5849 howto = elf32_arm_howto_from_type (r_type);
5850
5851 /* If the start address has been set, then set the EF_ARM_HASENTRY
5852 flag. Setting this more than once is redundant, but the cost is
5853 not too high, and it keeps the code simple.
5854
5855 The test is done here, rather than somewhere else, because the
5856 start address is only set just before the final link commences.
5857
5858 Note - if the user deliberately sets a start address of 0, the
5859 flag will not be set. */
5860 if (bfd_get_start_address (output_bfd) != 0)
5861 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
5862
5863 dynobj = elf_hash_table (info)->dynobj;
5864 if (dynobj)
5865 {
5866 sgot = bfd_get_section_by_name (dynobj, ".got");
5867 splt = bfd_get_section_by_name (dynobj, ".plt");
5868 }
5869 symtab_hdr = & elf_symtab_hdr (input_bfd);
5870 sym_hashes = elf_sym_hashes (input_bfd);
5871 local_got_offsets = elf_local_got_offsets (input_bfd);
5872 r_symndx = ELF32_R_SYM (rel->r_info);
5873
5874 if (globals->use_rel)
5875 {
5876 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
5877
5878 if (addend & ((howto->src_mask + 1) >> 1))
5879 {
5880 signed_addend = -1;
5881 signed_addend &= ~ howto->src_mask;
5882 signed_addend |= addend;
5883 }
5884 else
5885 signed_addend = addend;
5886 }
5887 else
5888 addend = signed_addend = rel->r_addend;
5889
5890 switch (r_type)
5891 {
5892 case R_ARM_NONE:
5893 /* We don't need to find a value for this symbol. It's just a
5894 marker. */
5895 *unresolved_reloc_p = FALSE;
5896 return bfd_reloc_ok;
5897
5898 case R_ARM_ABS12:
5899 if (!globals->vxworks_p)
5900 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
5901
5902 case R_ARM_PC24:
5903 case R_ARM_ABS32:
5904 case R_ARM_ABS32_NOI:
5905 case R_ARM_REL32:
5906 case R_ARM_REL32_NOI:
5907 case R_ARM_CALL:
5908 case R_ARM_JUMP24:
5909 case R_ARM_XPC25:
5910 case R_ARM_PREL31:
5911 case R_ARM_PLT32:
5912 /* Handle relocations which should use the PLT entry. ABS32/REL32
5913 will use the symbol's value, which may point to a PLT entry, but we
5914 don't need to handle that here. If we created a PLT entry, all
5915 branches in this object should go to it. */
5916 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
5917 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
5918 && h != NULL
5919 && splt != NULL
5920 && h->plt.offset != (bfd_vma) -1)
5921 {
5922 /* If we've created a .plt section, and assigned a PLT entry to
5923 this function, it should not be known to bind locally. If
5924 it were, we would have cleared the PLT entry. */
5925 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
5926
5927 value = (splt->output_section->vma
5928 + splt->output_offset
5929 + h->plt.offset);
5930 *unresolved_reloc_p = FALSE;
5931 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5932 contents, rel->r_offset, value,
5933 rel->r_addend);
5934 }
5935
5936 /* When generating a shared object or relocatable executable, these
5937 relocations are copied into the output file to be resolved at
5938 run time. */
5939 if ((info->shared || globals->root.is_relocatable_executable)
5940 && (input_section->flags & SEC_ALLOC)
5941 && !(elf32_arm_hash_table (info)->vxworks_p
5942 && strcmp (input_section->output_section->name,
5943 ".tls_vars") == 0)
5944 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
5945 || !SYMBOL_CALLS_LOCAL (info, h))
5946 && (h == NULL
5947 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5948 || h->root.type != bfd_link_hash_undefweak)
5949 && r_type != R_ARM_PC24
5950 && r_type != R_ARM_CALL
5951 && r_type != R_ARM_JUMP24
5952 && r_type != R_ARM_PREL31
5953 && r_type != R_ARM_PLT32)
5954 {
5955 Elf_Internal_Rela outrel;
5956 bfd_byte *loc;
5957 bfd_boolean skip, relocate;
5958
5959 *unresolved_reloc_p = FALSE;
5960
5961 if (sreloc == NULL)
5962 {
5963 const char * name;
5964
5965 name = (bfd_elf_string_from_elf_section
5966 (input_bfd,
5967 elf_elfheader (input_bfd)->e_shstrndx,
5968 elf_section_data (input_section)->rel_hdr.sh_name));
5969 if (name == NULL)
5970 return bfd_reloc_notsupported;
5971
5972 BFD_ASSERT (reloc_section_p (globals, name, input_section));
5973
5974 sreloc = bfd_get_section_by_name (dynobj, name);
5975 BFD_ASSERT (sreloc != NULL);
5976 }
5977
5978 skip = FALSE;
5979 relocate = FALSE;
5980
5981 outrel.r_addend = addend;
5982 outrel.r_offset =
5983 _bfd_elf_section_offset (output_bfd, info, input_section,
5984 rel->r_offset);
5985 if (outrel.r_offset == (bfd_vma) -1)
5986 skip = TRUE;
5987 else if (outrel.r_offset == (bfd_vma) -2)
5988 skip = TRUE, relocate = TRUE;
5989 outrel.r_offset += (input_section->output_section->vma
5990 + input_section->output_offset);
5991
5992 if (skip)
5993 memset (&outrel, 0, sizeof outrel);
5994 else if (h != NULL
5995 && h->dynindx != -1
5996 && (!info->shared
5997 || !info->symbolic
5998 || !h->def_regular))
5999 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6000 else
6001 {
6002 int symbol;
6003
6004 /* This symbol is local, or marked to become local. */
6005 if (sym_flags == STT_ARM_TFUNC)
6006 value |= 1;
6007 if (globals->symbian_p)
6008 {
6009 asection *osec;
6010
6011 /* On Symbian OS, the data segment and text segement
6012 can be relocated independently. Therefore, we
6013 must indicate the segment to which this
6014 relocation is relative. The BPABI allows us to
6015 use any symbol in the right segment; we just use
6016 the section symbol as it is convenient. (We
6017 cannot use the symbol given by "h" directly as it
6018 will not appear in the dynamic symbol table.)
6019
6020 Note that the dynamic linker ignores the section
6021 symbol value, so we don't subtract osec->vma
6022 from the emitted reloc addend. */
6023 if (sym_sec)
6024 osec = sym_sec->output_section;
6025 else
6026 osec = input_section->output_section;
6027 symbol = elf_section_data (osec)->dynindx;
6028 if (symbol == 0)
6029 {
6030 struct elf_link_hash_table *htab = elf_hash_table (info);
6031
6032 if ((osec->flags & SEC_READONLY) == 0
6033 && htab->data_index_section != NULL)
6034 osec = htab->data_index_section;
6035 else
6036 osec = htab->text_index_section;
6037 symbol = elf_section_data (osec)->dynindx;
6038 }
6039 BFD_ASSERT (symbol != 0);
6040 }
6041 else
6042 /* On SVR4-ish systems, the dynamic loader cannot
6043 relocate the text and data segments independently,
6044 so the symbol does not matter. */
6045 symbol = 0;
6046 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
6047 if (globals->use_rel)
6048 relocate = TRUE;
6049 else
6050 outrel.r_addend += value;
6051 }
6052
6053 loc = sreloc->contents;
6054 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
6055 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6056
6057 /* If this reloc is against an external symbol, we do not want to
6058 fiddle with the addend. Otherwise, we need to include the symbol
6059 value so that it becomes an addend for the dynamic reloc. */
6060 if (! relocate)
6061 return bfd_reloc_ok;
6062
6063 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6064 contents, rel->r_offset, value,
6065 (bfd_vma) 0);
6066 }
6067 else switch (r_type)
6068 {
6069 case R_ARM_ABS12:
6070 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
6071
6072 case R_ARM_XPC25: /* Arm BLX instruction. */
6073 case R_ARM_CALL:
6074 case R_ARM_JUMP24:
6075 case R_ARM_PC24: /* Arm B/BL instruction. */
6076 case R_ARM_PLT32:
6077 {
6078 bfd_vma from;
6079 bfd_signed_vma branch_offset;
6080 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6081
6082 from = (input_section->output_section->vma
6083 + input_section->output_offset
6084 + rel->r_offset);
6085 branch_offset = (bfd_signed_vma)(value - from);
6086
6087 if (r_type == R_ARM_XPC25)
6088 {
6089 /* Check for Arm calling Arm function. */
6090 /* FIXME: Should we translate the instruction into a BL
6091 instruction instead ? */
6092 if (sym_flags != STT_ARM_TFUNC)
6093 (*_bfd_error_handler)
6094 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6095 input_bfd,
6096 h ? h->root.root.string : "(local)");
6097 }
6098 else if (r_type != R_ARM_CALL)
6099 {
6100 /* Check for Arm calling Thumb function. */
6101 if (sym_flags == STT_ARM_TFUNC)
6102 {
6103 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
6104 output_bfd, input_section,
6105 hit_data, sym_sec, rel->r_offset,
6106 signed_addend, value,
6107 error_message))
6108 return bfd_reloc_ok;
6109 else
6110 return bfd_reloc_dangerous;
6111 }
6112 }
6113
6114 /* Check if a stub has to be inserted because the
6115 destination is too far or we are changing mode. */
6116 if (r_type == R_ARM_CALL)
6117 {
6118 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
6119 || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET
6120 || sym_flags == STT_ARM_TFUNC)
6121 {
6122 /* The target is out of reach, so redirect the
6123 branch to the local stub for this function. */
6124
6125 stub_entry = elf32_arm_get_stub_entry (input_section,
6126 sym_sec, h,
6127 rel, globals);
6128 if (stub_entry != NULL)
6129 value = (stub_entry->stub_offset
6130 + stub_entry->stub_sec->output_offset
6131 + stub_entry->stub_sec->output_section->vma);
6132 }
6133 }
6134
6135 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6136 where:
6137 S is the address of the symbol in the relocation.
6138 P is address of the instruction being relocated.
6139 A is the addend (extracted from the instruction) in bytes.
6140
6141 S is held in 'value'.
6142 P is the base address of the section containing the
6143 instruction plus the offset of the reloc into that
6144 section, ie:
6145 (input_section->output_section->vma +
6146 input_section->output_offset +
6147 rel->r_offset).
6148 A is the addend, converted into bytes, ie:
6149 (signed_addend * 4)
6150
6151 Note: None of these operations have knowledge of the pipeline
6152 size of the processor, thus it is up to the assembler to
6153 encode this information into the addend. */
6154 value -= (input_section->output_section->vma
6155 + input_section->output_offset);
6156 value -= rel->r_offset;
6157 if (globals->use_rel)
6158 value += (signed_addend << howto->size);
6159 else
6160 /* RELA addends do not have to be adjusted by howto->size. */
6161 value += signed_addend;
6162
6163 signed_addend = value;
6164 signed_addend >>= howto->rightshift;
6165
6166 /* A branch to an undefined weak symbol is turned into a jump to
6167 the next instruction. */
6168 if (h && h->root.type == bfd_link_hash_undefweak)
6169 {
6170 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
6171 | 0x0affffff;
6172 }
6173 else
6174 {
6175 /* Perform a signed range check. */
6176 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
6177 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
6178 return bfd_reloc_overflow;
6179
6180 addend = (value & 2);
6181
6182 value = (signed_addend & howto->dst_mask)
6183 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
6184
6185 /* Set the H bit in the BLX instruction. */
6186 if (sym_flags == STT_ARM_TFUNC)
6187 {
6188 if (addend)
6189 value |= (1 << 24);
6190 else
6191 value &= ~(bfd_vma)(1 << 24);
6192 }
6193 if (r_type == R_ARM_CALL)
6194 {
6195 /* Select the correct instruction (BL or BLX). */
6196 /* Only if we are not handling a BL to a stub. In this
6197 case, mode switching is performed by the stub. */
6198 if (sym_flags == STT_ARM_TFUNC && !stub_entry)
6199 value |= (1 << 28);
6200 else
6201 {
6202 value &= ~(bfd_vma)(1 << 28);
6203 value |= (1 << 24);
6204 }
6205 }
6206 }
6207 }
6208 break;
6209
6210 case R_ARM_ABS32:
6211 value += addend;
6212 if (sym_flags == STT_ARM_TFUNC)
6213 value |= 1;
6214 break;
6215
6216 case R_ARM_ABS32_NOI:
6217 value += addend;
6218 break;
6219
6220 case R_ARM_REL32:
6221 value += addend;
6222 if (sym_flags == STT_ARM_TFUNC)
6223 value |= 1;
6224 value -= (input_section->output_section->vma
6225 + input_section->output_offset + rel->r_offset);
6226 break;
6227
6228 case R_ARM_REL32_NOI:
6229 value += addend;
6230 value -= (input_section->output_section->vma
6231 + input_section->output_offset + rel->r_offset);
6232 break;
6233
6234 case R_ARM_PREL31:
6235 value -= (input_section->output_section->vma
6236 + input_section->output_offset + rel->r_offset);
6237 value += signed_addend;
6238 if (! h || h->root.type != bfd_link_hash_undefweak)
6239 {
6240 /* Check for overflow. */
6241 if ((value ^ (value >> 1)) & (1 << 30))
6242 return bfd_reloc_overflow;
6243 }
6244 value &= 0x7fffffff;
6245 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
6246 if (sym_flags == STT_ARM_TFUNC)
6247 value |= 1;
6248 break;
6249 }
6250
6251 bfd_put_32 (input_bfd, value, hit_data);
6252 return bfd_reloc_ok;
6253
6254 case R_ARM_ABS8:
6255 value += addend;
6256 if ((long) value > 0x7f || (long) value < -0x80)
6257 return bfd_reloc_overflow;
6258
6259 bfd_put_8 (input_bfd, value, hit_data);
6260 return bfd_reloc_ok;
6261
6262 case R_ARM_ABS16:
6263 value += addend;
6264
6265 if ((long) value > 0x7fff || (long) value < -0x8000)
6266 return bfd_reloc_overflow;
6267
6268 bfd_put_16 (input_bfd, value, hit_data);
6269 return bfd_reloc_ok;
6270
6271 case R_ARM_THM_ABS5:
6272 /* Support ldr and str instructions for the thumb. */
6273 if (globals->use_rel)
6274 {
6275 /* Need to refetch addend. */
6276 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6277 /* ??? Need to determine shift amount from operand size. */
6278 addend >>= howto->rightshift;
6279 }
6280 value += addend;
6281
6282 /* ??? Isn't value unsigned? */
6283 if ((long) value > 0x1f || (long) value < -0x10)
6284 return bfd_reloc_overflow;
6285
6286 /* ??? Value needs to be properly shifted into place first. */
6287 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
6288 bfd_put_16 (input_bfd, value, hit_data);
6289 return bfd_reloc_ok;
6290
6291 case R_ARM_THM_ALU_PREL_11_0:
6292 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6293 {
6294 bfd_vma insn;
6295 bfd_signed_vma relocation;
6296
6297 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6298 | bfd_get_16 (input_bfd, hit_data + 2);
6299
6300 if (globals->use_rel)
6301 {
6302 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
6303 | ((insn & (1 << 26)) >> 15);
6304 if (insn & 0xf00000)
6305 signed_addend = -signed_addend;
6306 }
6307
6308 relocation = value + signed_addend;
6309 relocation -= (input_section->output_section->vma
6310 + input_section->output_offset
6311 + rel->r_offset);
6312
6313 value = abs (relocation);
6314
6315 if (value >= 0x1000)
6316 return bfd_reloc_overflow;
6317
6318 insn = (insn & 0xfb0f8f00) | (value & 0xff)
6319 | ((value & 0x700) << 4)
6320 | ((value & 0x800) << 15);
6321 if (relocation < 0)
6322 insn |= 0xa00000;
6323
6324 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6325 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6326
6327 return bfd_reloc_ok;
6328 }
6329
6330 case R_ARM_THM_PC12:
6331 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6332 {
6333 bfd_vma insn;
6334 bfd_signed_vma relocation;
6335
6336 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6337 | bfd_get_16 (input_bfd, hit_data + 2);
6338
6339 if (globals->use_rel)
6340 {
6341 signed_addend = insn & 0xfff;
6342 if (!(insn & (1 << 23)))
6343 signed_addend = -signed_addend;
6344 }
6345
6346 relocation = value + signed_addend;
6347 relocation -= (input_section->output_section->vma
6348 + input_section->output_offset
6349 + rel->r_offset);
6350
6351 value = abs (relocation);
6352
6353 if (value >= 0x1000)
6354 return bfd_reloc_overflow;
6355
6356 insn = (insn & 0xff7ff000) | value;
6357 if (relocation >= 0)
6358 insn |= (1 << 23);
6359
6360 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6361 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6362
6363 return bfd_reloc_ok;
6364 }
6365
6366 case R_ARM_THM_XPC22:
6367 case R_ARM_THM_CALL:
6368 case R_ARM_THM_JUMP24:
6369 /* Thumb BL (branch long instruction). */
6370 {
6371 bfd_vma relocation;
6372 bfd_vma reloc_sign;
6373 bfd_boolean overflow = FALSE;
6374 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6375 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
6376 bfd_signed_vma reloc_signed_max;
6377 bfd_signed_vma reloc_signed_min;
6378 bfd_vma check;
6379 bfd_signed_vma signed_check;
6380 int bitsize;
6381 int thumb2 = using_thumb2 (globals);
6382
6383 /* A branch to an undefined weak symbol is turned into a jump to
6384 the next instruction unless a PLT entry will be created. */
6385 if (h && h->root.type == bfd_link_hash_undefweak
6386 && !(splt != NULL && h->plt.offset != (bfd_vma) -1))
6387 {
6388 bfd_put_16 (input_bfd, 0xe000, hit_data);
6389 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
6390 return bfd_reloc_ok;
6391 }
6392
6393 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6394 with Thumb-1) involving the J1 and J2 bits. */
6395 if (globals->use_rel)
6396 {
6397 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
6398 bfd_vma upper = upper_insn & 0x3ff;
6399 bfd_vma lower = lower_insn & 0x7ff;
6400 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
6401 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
6402 bfd_vma i1 = j1 ^ s ? 0 : 1;
6403 bfd_vma i2 = j2 ^ s ? 0 : 1;
6404
6405 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
6406 /* Sign extend. */
6407 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
6408
6409 signed_addend = addend;
6410 }
6411
6412 if (r_type == R_ARM_THM_XPC22)
6413 {
6414 /* Check for Thumb to Thumb call. */
6415 /* FIXME: Should we translate the instruction into a BL
6416 instruction instead ? */
6417 if (sym_flags == STT_ARM_TFUNC)
6418 (*_bfd_error_handler)
6419 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6420 input_bfd,
6421 h ? h->root.root.string : "(local)");
6422 }
6423 else
6424 {
6425 /* If it is not a call to Thumb, assume call to Arm.
6426 If it is a call relative to a section name, then it is not a
6427 function call at all, but rather a long jump. Calls through
6428 the PLT do not require stubs. */
6429 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
6430 && (h == NULL || splt == NULL
6431 || h->plt.offset == (bfd_vma) -1))
6432 {
6433 if (globals->use_blx && r_type == R_ARM_THM_CALL)
6434 {
6435 /* Convert BL to BLX. */
6436 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6437 }
6438 else if (r_type != R_ARM_THM_CALL)
6439 {
6440 if (elf32_thumb_to_arm_stub
6441 (info, sym_name, input_bfd, output_bfd, input_section,
6442 hit_data, sym_sec, rel->r_offset, signed_addend, value,
6443 error_message))
6444 return bfd_reloc_ok;
6445 else
6446 return bfd_reloc_dangerous;
6447 }
6448 }
6449 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
6450 && r_type == R_ARM_THM_CALL)
6451 {
6452 /* Make sure this is a BL. */
6453 lower_insn |= 0x1800;
6454 }
6455 }
6456
6457 /* Handle calls via the PLT. */
6458 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6459 {
6460 value = (splt->output_section->vma
6461 + splt->output_offset
6462 + h->plt.offset);
6463 if (globals->use_blx && r_type == R_ARM_THM_CALL)
6464 {
6465 /* If the Thumb BLX instruction is available, convert the
6466 BL to a BLX instruction to call the ARM-mode PLT entry. */
6467 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6468 }
6469 else
6470 /* Target the Thumb stub before the ARM PLT entry. */
6471 value -= PLT_THUMB_STUB_SIZE;
6472 *unresolved_reloc_p = FALSE;
6473 }
6474
6475 if (r_type == R_ARM_THM_CALL)
6476 {
6477 /* Check if a stub has to be inserted because the destination
6478 is too far. */
6479 bfd_vma from;
6480 bfd_signed_vma branch_offset;
6481 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6482
6483 from = (input_section->output_section->vma
6484 + input_section->output_offset
6485 + rel->r_offset);
6486 branch_offset = (bfd_signed_vma)(value - from);
6487
6488 if ((!thumb2
6489 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
6490 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
6491 ||
6492 (thumb2
6493 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
6494 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
6495 || ((sym_flags != STT_ARM_TFUNC) && !globals->use_blx))
6496 {
6497 /* The target is out of reach or we are changing modes, so
6498 redirect the branch to the local stub for this
6499 function. */
6500 stub_entry = elf32_arm_get_stub_entry (input_section,
6501 sym_sec, h,
6502 rel, globals);
6503 if (stub_entry != NULL)
6504 value = (stub_entry->stub_offset
6505 + stub_entry->stub_sec->output_offset
6506 + stub_entry->stub_sec->output_section->vma);
6507
6508 /* If this call becomes a call to Arm, force BLX. */
6509 if (globals->use_blx)
6510 {
6511 if ((stub_entry
6512 && !arm_stub_is_thumb (stub_entry->stub_type))
6513 || (sym_flags != STT_ARM_TFUNC))
6514 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6515 }
6516 }
6517 }
6518
6519 relocation = value + signed_addend;
6520
6521 relocation -= (input_section->output_section->vma
6522 + input_section->output_offset
6523 + rel->r_offset);
6524
6525 check = relocation >> howto->rightshift;
6526
6527 /* If this is a signed value, the rightshift just dropped
6528 leading 1 bits (assuming twos complement). */
6529 if ((bfd_signed_vma) relocation >= 0)
6530 signed_check = check;
6531 else
6532 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
6533
6534 /* Calculate the permissable maximum and minimum values for
6535 this relocation according to whether we're relocating for
6536 Thumb-2 or not. */
6537 bitsize = howto->bitsize;
6538 if (!thumb2)
6539 bitsize -= 2;
6540 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
6541 reloc_signed_min = ~reloc_signed_max;
6542
6543 /* Assumes two's complement. */
6544 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6545 overflow = TRUE;
6546
6547 if ((lower_insn & 0x5000) == 0x4000)
6548 /* For a BLX instruction, make sure that the relocation is rounded up
6549 to a word boundary. This follows the semantics of the instruction
6550 which specifies that bit 1 of the target address will come from bit
6551 1 of the base address. */
6552 relocation = (relocation + 2) & ~ 3;
6553
6554 /* Put RELOCATION back into the insn. Assumes two's complement.
6555 We use the Thumb-2 encoding, which is safe even if dealing with
6556 a Thumb-1 instruction by virtue of our overflow check above. */
6557 reloc_sign = (signed_check < 0) ? 1 : 0;
6558 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
6559 | ((relocation >> 12) & 0x3ff)
6560 | (reloc_sign << 10);
6561 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
6562 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
6563 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
6564 | ((relocation >> 1) & 0x7ff);
6565
6566 /* Put the relocated value back in the object file: */
6567 bfd_put_16 (input_bfd, upper_insn, hit_data);
6568 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6569
6570 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6571 }
6572 break;
6573
6574 case R_ARM_THM_JUMP19:
6575 /* Thumb32 conditional branch instruction. */
6576 {
6577 bfd_vma relocation;
6578 bfd_boolean overflow = FALSE;
6579 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6580 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
6581 bfd_signed_vma reloc_signed_max = 0xffffe;
6582 bfd_signed_vma reloc_signed_min = -0x100000;
6583 bfd_signed_vma signed_check;
6584
6585 /* Need to refetch the addend, reconstruct the top three bits,
6586 and squish the two 11 bit pieces together. */
6587 if (globals->use_rel)
6588 {
6589 bfd_vma S = (upper_insn & 0x0400) >> 10;
6590 bfd_vma upper = (upper_insn & 0x003f);
6591 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
6592 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
6593 bfd_vma lower = (lower_insn & 0x07ff);
6594
6595 upper |= J1 << 6;
6596 upper |= J2 << 7;
6597 upper |= (!S) << 8;
6598 upper -= 0x0100; /* Sign extend. */
6599
6600 addend = (upper << 12) | (lower << 1);
6601 signed_addend = addend;
6602 }
6603
6604 /* Handle calls via the PLT. */
6605 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6606 {
6607 value = (splt->output_section->vma
6608 + splt->output_offset
6609 + h->plt.offset);
6610 /* Target the Thumb stub before the ARM PLT entry. */
6611 value -= PLT_THUMB_STUB_SIZE;
6612 *unresolved_reloc_p = FALSE;
6613 }
6614
6615 /* ??? Should handle interworking? GCC might someday try to
6616 use this for tail calls. */
6617
6618 relocation = value + signed_addend;
6619 relocation -= (input_section->output_section->vma
6620 + input_section->output_offset
6621 + rel->r_offset);
6622 signed_check = (bfd_signed_vma) relocation;
6623
6624 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6625 overflow = TRUE;
6626
6627 /* Put RELOCATION back into the insn. */
6628 {
6629 bfd_vma S = (relocation & 0x00100000) >> 20;
6630 bfd_vma J2 = (relocation & 0x00080000) >> 19;
6631 bfd_vma J1 = (relocation & 0x00040000) >> 18;
6632 bfd_vma hi = (relocation & 0x0003f000) >> 12;
6633 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
6634
6635 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
6636 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
6637 }
6638
6639 /* Put the relocated value back in the object file: */
6640 bfd_put_16 (input_bfd, upper_insn, hit_data);
6641 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6642
6643 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6644 }
6645
6646 case R_ARM_THM_JUMP11:
6647 case R_ARM_THM_JUMP8:
6648 case R_ARM_THM_JUMP6:
6649 /* Thumb B (branch) instruction). */
6650 {
6651 bfd_signed_vma relocation;
6652 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
6653 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
6654 bfd_signed_vma signed_check;
6655
6656 /* CZB cannot jump backward. */
6657 if (r_type == R_ARM_THM_JUMP6)
6658 reloc_signed_min = 0;
6659
6660 if (globals->use_rel)
6661 {
6662 /* Need to refetch addend. */
6663 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6664 if (addend & ((howto->src_mask + 1) >> 1))
6665 {
6666 signed_addend = -1;
6667 signed_addend &= ~ howto->src_mask;
6668 signed_addend |= addend;
6669 }
6670 else
6671 signed_addend = addend;
6672 /* The value in the insn has been right shifted. We need to
6673 undo this, so that we can perform the address calculation
6674 in terms of bytes. */
6675 signed_addend <<= howto->rightshift;
6676 }
6677 relocation = value + signed_addend;
6678
6679 relocation -= (input_section->output_section->vma
6680 + input_section->output_offset
6681 + rel->r_offset);
6682
6683 relocation >>= howto->rightshift;
6684 signed_check = relocation;
6685
6686 if (r_type == R_ARM_THM_JUMP6)
6687 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
6688 else
6689 relocation &= howto->dst_mask;
6690 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
6691
6692 bfd_put_16 (input_bfd, relocation, hit_data);
6693
6694 /* Assumes two's complement. */
6695 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6696 return bfd_reloc_overflow;
6697
6698 return bfd_reloc_ok;
6699 }
6700
6701 case R_ARM_ALU_PCREL7_0:
6702 case R_ARM_ALU_PCREL15_8:
6703 case R_ARM_ALU_PCREL23_15:
6704 {
6705 bfd_vma insn;
6706 bfd_vma relocation;
6707
6708 insn = bfd_get_32 (input_bfd, hit_data);
6709 if (globals->use_rel)
6710 {
6711 /* Extract the addend. */
6712 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
6713 signed_addend = addend;
6714 }
6715 relocation = value + signed_addend;
6716
6717 relocation -= (input_section->output_section->vma
6718 + input_section->output_offset
6719 + rel->r_offset);
6720 insn = (insn & ~0xfff)
6721 | ((howto->bitpos << 7) & 0xf00)
6722 | ((relocation >> howto->bitpos) & 0xff);
6723 bfd_put_32 (input_bfd, value, hit_data);
6724 }
6725 return bfd_reloc_ok;
6726
6727 case R_ARM_GNU_VTINHERIT:
6728 case R_ARM_GNU_VTENTRY:
6729 return bfd_reloc_ok;
6730
6731 case R_ARM_GOTOFF32:
6732 /* Relocation is relative to the start of the
6733 global offset table. */
6734
6735 BFD_ASSERT (sgot != NULL);
6736 if (sgot == NULL)
6737 return bfd_reloc_notsupported;
6738
6739 /* If we are addressing a Thumb function, we need to adjust the
6740 address by one, so that attempts to call the function pointer will
6741 correctly interpret it as Thumb code. */
6742 if (sym_flags == STT_ARM_TFUNC)
6743 value += 1;
6744
6745 /* Note that sgot->output_offset is not involved in this
6746 calculation. We always want the start of .got. If we
6747 define _GLOBAL_OFFSET_TABLE in a different way, as is
6748 permitted by the ABI, we might have to change this
6749 calculation. */
6750 value -= sgot->output_section->vma;
6751 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6752 contents, rel->r_offset, value,
6753 rel->r_addend);
6754
6755 case R_ARM_GOTPC:
6756 /* Use global offset table as symbol value. */
6757 BFD_ASSERT (sgot != NULL);
6758
6759 if (sgot == NULL)
6760 return bfd_reloc_notsupported;
6761
6762 *unresolved_reloc_p = FALSE;
6763 value = sgot->output_section->vma;
6764 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6765 contents, rel->r_offset, value,
6766 rel->r_addend);
6767
6768 case R_ARM_GOT32:
6769 case R_ARM_GOT_PREL:
6770 /* Relocation is to the entry for this symbol in the
6771 global offset table. */
6772 if (sgot == NULL)
6773 return bfd_reloc_notsupported;
6774
6775 if (h != NULL)
6776 {
6777 bfd_vma off;
6778 bfd_boolean dyn;
6779
6780 off = h->got.offset;
6781 BFD_ASSERT (off != (bfd_vma) -1);
6782 dyn = globals->root.dynamic_sections_created;
6783
6784 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6785 || (info->shared
6786 && SYMBOL_REFERENCES_LOCAL (info, h))
6787 || (ELF_ST_VISIBILITY (h->other)
6788 && h->root.type == bfd_link_hash_undefweak))
6789 {
6790 /* This is actually a static link, or it is a -Bsymbolic link
6791 and the symbol is defined locally. We must initialize this
6792 entry in the global offset table. Since the offset must
6793 always be a multiple of 4, we use the least significant bit
6794 to record whether we have initialized it already.
6795
6796 When doing a dynamic link, we create a .rel(a).got relocation
6797 entry to initialize the value. This is done in the
6798 finish_dynamic_symbol routine. */
6799 if ((off & 1) != 0)
6800 off &= ~1;
6801 else
6802 {
6803 /* If we are addressing a Thumb function, we need to
6804 adjust the address by one, so that attempts to
6805 call the function pointer will correctly
6806 interpret it as Thumb code. */
6807 if (sym_flags == STT_ARM_TFUNC)
6808 value |= 1;
6809
6810 bfd_put_32 (output_bfd, value, sgot->contents + off);
6811 h->got.offset |= 1;
6812 }
6813 }
6814 else
6815 *unresolved_reloc_p = FALSE;
6816
6817 value = sgot->output_offset + off;
6818 }
6819 else
6820 {
6821 bfd_vma off;
6822
6823 BFD_ASSERT (local_got_offsets != NULL &&
6824 local_got_offsets[r_symndx] != (bfd_vma) -1);
6825
6826 off = local_got_offsets[r_symndx];
6827
6828 /* The offset must always be a multiple of 4. We use the
6829 least significant bit to record whether we have already
6830 generated the necessary reloc. */
6831 if ((off & 1) != 0)
6832 off &= ~1;
6833 else
6834 {
6835 /* If we are addressing a Thumb function, we need to
6836 adjust the address by one, so that attempts to
6837 call the function pointer will correctly
6838 interpret it as Thumb code. */
6839 if (sym_flags == STT_ARM_TFUNC)
6840 value |= 1;
6841
6842 if (globals->use_rel)
6843 bfd_put_32 (output_bfd, value, sgot->contents + off);
6844
6845 if (info->shared)
6846 {
6847 asection * srelgot;
6848 Elf_Internal_Rela outrel;
6849 bfd_byte *loc;
6850
6851 srelgot = (bfd_get_section_by_name
6852 (dynobj, RELOC_SECTION (globals, ".got")));
6853 BFD_ASSERT (srelgot != NULL);
6854
6855 outrel.r_addend = addend + value;
6856 outrel.r_offset = (sgot->output_section->vma
6857 + sgot->output_offset
6858 + off);
6859 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
6860 loc = srelgot->contents;
6861 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
6862 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6863 }
6864
6865 local_got_offsets[r_symndx] |= 1;
6866 }
6867
6868 value = sgot->output_offset + off;
6869 }
6870 if (r_type != R_ARM_GOT32)
6871 value += sgot->output_section->vma;
6872
6873 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6874 contents, rel->r_offset, value,
6875 rel->r_addend);
6876
6877 case R_ARM_TLS_LDO32:
6878 value = value - dtpoff_base (info);
6879
6880 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6881 contents, rel->r_offset, value,
6882 rel->r_addend);
6883
6884 case R_ARM_TLS_LDM32:
6885 {
6886 bfd_vma off;
6887
6888 if (globals->sgot == NULL)
6889 abort ();
6890
6891 off = globals->tls_ldm_got.offset;
6892
6893 if ((off & 1) != 0)
6894 off &= ~1;
6895 else
6896 {
6897 /* If we don't know the module number, create a relocation
6898 for it. */
6899 if (info->shared)
6900 {
6901 Elf_Internal_Rela outrel;
6902 bfd_byte *loc;
6903
6904 if (globals->srelgot == NULL)
6905 abort ();
6906
6907 outrel.r_addend = 0;
6908 outrel.r_offset = (globals->sgot->output_section->vma
6909 + globals->sgot->output_offset + off);
6910 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
6911
6912 if (globals->use_rel)
6913 bfd_put_32 (output_bfd, outrel.r_addend,
6914 globals->sgot->contents + off);
6915
6916 loc = globals->srelgot->contents;
6917 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
6918 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6919 }
6920 else
6921 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
6922
6923 globals->tls_ldm_got.offset |= 1;
6924 }
6925
6926 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
6927 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
6928
6929 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6930 contents, rel->r_offset, value,
6931 rel->r_addend);
6932 }
6933
6934 case R_ARM_TLS_GD32:
6935 case R_ARM_TLS_IE32:
6936 {
6937 bfd_vma off;
6938 int indx;
6939 char tls_type;
6940
6941 if (globals->sgot == NULL)
6942 abort ();
6943
6944 indx = 0;
6945 if (h != NULL)
6946 {
6947 bfd_boolean dyn;
6948 dyn = globals->root.dynamic_sections_created;
6949 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6950 && (!info->shared
6951 || !SYMBOL_REFERENCES_LOCAL (info, h)))
6952 {
6953 *unresolved_reloc_p = FALSE;
6954 indx = h->dynindx;
6955 }
6956 off = h->got.offset;
6957 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
6958 }
6959 else
6960 {
6961 if (local_got_offsets == NULL)
6962 abort ();
6963 off = local_got_offsets[r_symndx];
6964 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
6965 }
6966
6967 if (tls_type == GOT_UNKNOWN)
6968 abort ();
6969
6970 if ((off & 1) != 0)
6971 off &= ~1;
6972 else
6973 {
6974 bfd_boolean need_relocs = FALSE;
6975 Elf_Internal_Rela outrel;
6976 bfd_byte *loc = NULL;
6977 int cur_off = off;
6978
6979 /* The GOT entries have not been initialized yet. Do it
6980 now, and emit any relocations. If both an IE GOT and a
6981 GD GOT are necessary, we emit the GD first. */
6982
6983 if ((info->shared || indx != 0)
6984 && (h == NULL
6985 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6986 || h->root.type != bfd_link_hash_undefweak))
6987 {
6988 need_relocs = TRUE;
6989 if (globals->srelgot == NULL)
6990 abort ();
6991 loc = globals->srelgot->contents;
6992 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
6993 }
6994
6995 if (tls_type & GOT_TLS_GD)
6996 {
6997 if (need_relocs)
6998 {
6999 outrel.r_addend = 0;
7000 outrel.r_offset = (globals->sgot->output_section->vma
7001 + globals->sgot->output_offset
7002 + cur_off);
7003 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
7004
7005 if (globals->use_rel)
7006 bfd_put_32 (output_bfd, outrel.r_addend,
7007 globals->sgot->contents + cur_off);
7008
7009 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7010 globals->srelgot->reloc_count++;
7011 loc += RELOC_SIZE (globals);
7012
7013 if (indx == 0)
7014 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7015 globals->sgot->contents + cur_off + 4);
7016 else
7017 {
7018 outrel.r_addend = 0;
7019 outrel.r_info = ELF32_R_INFO (indx,
7020 R_ARM_TLS_DTPOFF32);
7021 outrel.r_offset += 4;
7022
7023 if (globals->use_rel)
7024 bfd_put_32 (output_bfd, outrel.r_addend,
7025 globals->sgot->contents + cur_off + 4);
7026
7027
7028 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7029 globals->srelgot->reloc_count++;
7030 loc += RELOC_SIZE (globals);
7031 }
7032 }
7033 else
7034 {
7035 /* If we are not emitting relocations for a
7036 general dynamic reference, then we must be in a
7037 static link or an executable link with the
7038 symbol binding locally. Mark it as belonging
7039 to module 1, the executable. */
7040 bfd_put_32 (output_bfd, 1,
7041 globals->sgot->contents + cur_off);
7042 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7043 globals->sgot->contents + cur_off + 4);
7044 }
7045
7046 cur_off += 8;
7047 }
7048
7049 if (tls_type & GOT_TLS_IE)
7050 {
7051 if (need_relocs)
7052 {
7053 if (indx == 0)
7054 outrel.r_addend = value - dtpoff_base (info);
7055 else
7056 outrel.r_addend = 0;
7057 outrel.r_offset = (globals->sgot->output_section->vma
7058 + globals->sgot->output_offset
7059 + cur_off);
7060 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
7061
7062 if (globals->use_rel)
7063 bfd_put_32 (output_bfd, outrel.r_addend,
7064 globals->sgot->contents + cur_off);
7065
7066 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7067 globals->srelgot->reloc_count++;
7068 loc += RELOC_SIZE (globals);
7069 }
7070 else
7071 bfd_put_32 (output_bfd, tpoff (info, value),
7072 globals->sgot->contents + cur_off);
7073 cur_off += 4;
7074 }
7075
7076 if (h != NULL)
7077 h->got.offset |= 1;
7078 else
7079 local_got_offsets[r_symndx] |= 1;
7080 }
7081
7082 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
7083 off += 8;
7084 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
7085 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
7086
7087 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7088 contents, rel->r_offset, value,
7089 rel->r_addend);
7090 }
7091
7092 case R_ARM_TLS_LE32:
7093 if (info->shared)
7094 {
7095 (*_bfd_error_handler)
7096 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7097 input_bfd, input_section,
7098 (long) rel->r_offset, howto->name);
7099 return FALSE;
7100 }
7101 else
7102 value = tpoff (info, value);
7103
7104 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7105 contents, rel->r_offset, value,
7106 rel->r_addend);
7107
7108 case R_ARM_V4BX:
7109 if (globals->fix_v4bx)
7110 {
7111 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7112
7113 /* Ensure that we have a BX instruction. */
7114 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
7115
7116 if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
7117 {
7118 /* Branch to veneer. */
7119 bfd_vma glue_addr;
7120 glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
7121 glue_addr -= input_section->output_section->vma
7122 + input_section->output_offset
7123 + rel->r_offset + 8;
7124 insn = (insn & 0xf0000000) | 0x0a000000
7125 | ((glue_addr >> 2) & 0x00ffffff);
7126 }
7127 else
7128 {
7129 /* Preserve Rm (lowest four bits) and the condition code
7130 (highest four bits). Other bits encode MOV PC,Rm. */
7131 insn = (insn & 0xf000000f) | 0x01a0f000;
7132 }
7133
7134 bfd_put_32 (input_bfd, insn, hit_data);
7135 }
7136 return bfd_reloc_ok;
7137
7138 case R_ARM_MOVW_ABS_NC:
7139 case R_ARM_MOVT_ABS:
7140 case R_ARM_MOVW_PREL_NC:
7141 case R_ARM_MOVT_PREL:
7142 /* Until we properly support segment-base-relative addressing then
7143 we assume the segment base to be zero, as for the group relocations.
7144 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7145 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7146 case R_ARM_MOVW_BREL_NC:
7147 case R_ARM_MOVW_BREL:
7148 case R_ARM_MOVT_BREL:
7149 {
7150 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7151
7152 if (globals->use_rel)
7153 {
7154 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
7155 signed_addend = (addend ^ 0x8000) - 0x8000;
7156 }
7157
7158 value += signed_addend;
7159
7160 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
7161 value -= (input_section->output_section->vma
7162 + input_section->output_offset + rel->r_offset);
7163
7164 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
7165 return bfd_reloc_overflow;
7166
7167 if (sym_flags == STT_ARM_TFUNC)
7168 value |= 1;
7169
7170 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
7171 || r_type == R_ARM_MOVT_BREL)
7172 value >>= 16;
7173
7174 insn &= 0xfff0f000;
7175 insn |= value & 0xfff;
7176 insn |= (value & 0xf000) << 4;
7177 bfd_put_32 (input_bfd, insn, hit_data);
7178 }
7179 return bfd_reloc_ok;
7180
7181 case R_ARM_THM_MOVW_ABS_NC:
7182 case R_ARM_THM_MOVT_ABS:
7183 case R_ARM_THM_MOVW_PREL_NC:
7184 case R_ARM_THM_MOVT_PREL:
7185 /* Until we properly support segment-base-relative addressing then
7186 we assume the segment base to be zero, as for the above relocations.
7187 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7188 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7189 as R_ARM_THM_MOVT_ABS. */
7190 case R_ARM_THM_MOVW_BREL_NC:
7191 case R_ARM_THM_MOVW_BREL:
7192 case R_ARM_THM_MOVT_BREL:
7193 {
7194 bfd_vma insn;
7195
7196 insn = bfd_get_16 (input_bfd, hit_data) << 16;
7197 insn |= bfd_get_16 (input_bfd, hit_data + 2);
7198
7199 if (globals->use_rel)
7200 {
7201 addend = ((insn >> 4) & 0xf000)
7202 | ((insn >> 15) & 0x0800)
7203 | ((insn >> 4) & 0x0700)
7204 | (insn & 0x00ff);
7205 signed_addend = (addend ^ 0x8000) - 0x8000;
7206 }
7207
7208 value += signed_addend;
7209
7210 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
7211 value -= (input_section->output_section->vma
7212 + input_section->output_offset + rel->r_offset);
7213
7214 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
7215 return bfd_reloc_overflow;
7216
7217 if (sym_flags == STT_ARM_TFUNC)
7218 value |= 1;
7219
7220 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
7221 || r_type == R_ARM_THM_MOVT_BREL)
7222 value >>= 16;
7223
7224 insn &= 0xfbf08f00;
7225 insn |= (value & 0xf000) << 4;
7226 insn |= (value & 0x0800) << 15;
7227 insn |= (value & 0x0700) << 4;
7228 insn |= (value & 0x00ff);
7229
7230 bfd_put_16 (input_bfd, insn >> 16, hit_data);
7231 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
7232 }
7233 return bfd_reloc_ok;
7234
7235 case R_ARM_ALU_PC_G0_NC:
7236 case R_ARM_ALU_PC_G1_NC:
7237 case R_ARM_ALU_PC_G0:
7238 case R_ARM_ALU_PC_G1:
7239 case R_ARM_ALU_PC_G2:
7240 case R_ARM_ALU_SB_G0_NC:
7241 case R_ARM_ALU_SB_G1_NC:
7242 case R_ARM_ALU_SB_G0:
7243 case R_ARM_ALU_SB_G1:
7244 case R_ARM_ALU_SB_G2:
7245 {
7246 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7247 bfd_vma pc = input_section->output_section->vma
7248 + input_section->output_offset + rel->r_offset;
7249 /* sb should be the origin of the *segment* containing the symbol.
7250 It is not clear how to obtain this OS-dependent value, so we
7251 make an arbitrary choice of zero. */
7252 bfd_vma sb = 0;
7253 bfd_vma residual;
7254 bfd_vma g_n;
7255 bfd_signed_vma signed_value;
7256 int group = 0;
7257
7258 /* Determine which group of bits to select. */
7259 switch (r_type)
7260 {
7261 case R_ARM_ALU_PC_G0_NC:
7262 case R_ARM_ALU_PC_G0:
7263 case R_ARM_ALU_SB_G0_NC:
7264 case R_ARM_ALU_SB_G0:
7265 group = 0;
7266 break;
7267
7268 case R_ARM_ALU_PC_G1_NC:
7269 case R_ARM_ALU_PC_G1:
7270 case R_ARM_ALU_SB_G1_NC:
7271 case R_ARM_ALU_SB_G1:
7272 group = 1;
7273 break;
7274
7275 case R_ARM_ALU_PC_G2:
7276 case R_ARM_ALU_SB_G2:
7277 group = 2;
7278 break;
7279
7280 default:
7281 abort ();
7282 }
7283
7284 /* If REL, extract the addend from the insn. If RELA, it will
7285 have already been fetched for us. */
7286 if (globals->use_rel)
7287 {
7288 int negative;
7289 bfd_vma constant = insn & 0xff;
7290 bfd_vma rotation = (insn & 0xf00) >> 8;
7291
7292 if (rotation == 0)
7293 signed_addend = constant;
7294 else
7295 {
7296 /* Compensate for the fact that in the instruction, the
7297 rotation is stored in multiples of 2 bits. */
7298 rotation *= 2;
7299
7300 /* Rotate "constant" right by "rotation" bits. */
7301 signed_addend = (constant >> rotation) |
7302 (constant << (8 * sizeof (bfd_vma) - rotation));
7303 }
7304
7305 /* Determine if the instruction is an ADD or a SUB.
7306 (For REL, this determines the sign of the addend.) */
7307 negative = identify_add_or_sub (insn);
7308 if (negative == 0)
7309 {
7310 (*_bfd_error_handler)
7311 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7312 input_bfd, input_section,
7313 (long) rel->r_offset, howto->name);
7314 return bfd_reloc_overflow;
7315 }
7316
7317 signed_addend *= negative;
7318 }
7319
7320 /* Compute the value (X) to go in the place. */
7321 if (r_type == R_ARM_ALU_PC_G0_NC
7322 || r_type == R_ARM_ALU_PC_G1_NC
7323 || r_type == R_ARM_ALU_PC_G0
7324 || r_type == R_ARM_ALU_PC_G1
7325 || r_type == R_ARM_ALU_PC_G2)
7326 /* PC relative. */
7327 signed_value = value - pc + signed_addend;
7328 else
7329 /* Section base relative. */
7330 signed_value = value - sb + signed_addend;
7331
7332 /* If the target symbol is a Thumb function, then set the
7333 Thumb bit in the address. */
7334 if (sym_flags == STT_ARM_TFUNC)
7335 signed_value |= 1;
7336
7337 /* Calculate the value of the relevant G_n, in encoded
7338 constant-with-rotation format. */
7339 g_n = calculate_group_reloc_mask (abs (signed_value), group,
7340 &residual);
7341
7342 /* Check for overflow if required. */
7343 if ((r_type == R_ARM_ALU_PC_G0
7344 || r_type == R_ARM_ALU_PC_G1
7345 || r_type == R_ARM_ALU_PC_G2
7346 || r_type == R_ARM_ALU_SB_G0
7347 || r_type == R_ARM_ALU_SB_G1
7348 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
7349 {
7350 (*_bfd_error_handler)
7351 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7352 input_bfd, input_section,
7353 (long) rel->r_offset, abs (signed_value), howto->name);
7354 return bfd_reloc_overflow;
7355 }
7356
7357 /* Mask out the value and the ADD/SUB part of the opcode; take care
7358 not to destroy the S bit. */
7359 insn &= 0xff1ff000;
7360
7361 /* Set the opcode according to whether the value to go in the
7362 place is negative. */
7363 if (signed_value < 0)
7364 insn |= 1 << 22;
7365 else
7366 insn |= 1 << 23;
7367
7368 /* Encode the offset. */
7369 insn |= g_n;
7370
7371 bfd_put_32 (input_bfd, insn, hit_data);
7372 }
7373 return bfd_reloc_ok;
7374
7375 case R_ARM_LDR_PC_G0:
7376 case R_ARM_LDR_PC_G1:
7377 case R_ARM_LDR_PC_G2:
7378 case R_ARM_LDR_SB_G0:
7379 case R_ARM_LDR_SB_G1:
7380 case R_ARM_LDR_SB_G2:
7381 {
7382 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7383 bfd_vma pc = input_section->output_section->vma
7384 + input_section->output_offset + rel->r_offset;
7385 bfd_vma sb = 0; /* See note above. */
7386 bfd_vma residual;
7387 bfd_signed_vma signed_value;
7388 int group = 0;
7389
7390 /* Determine which groups of bits to calculate. */
7391 switch (r_type)
7392 {
7393 case R_ARM_LDR_PC_G0:
7394 case R_ARM_LDR_SB_G0:
7395 group = 0;
7396 break;
7397
7398 case R_ARM_LDR_PC_G1:
7399 case R_ARM_LDR_SB_G1:
7400 group = 1;
7401 break;
7402
7403 case R_ARM_LDR_PC_G2:
7404 case R_ARM_LDR_SB_G2:
7405 group = 2;
7406 break;
7407
7408 default:
7409 abort ();
7410 }
7411
7412 /* If REL, extract the addend from the insn. If RELA, it will
7413 have already been fetched for us. */
7414 if (globals->use_rel)
7415 {
7416 int negative = (insn & (1 << 23)) ? 1 : -1;
7417 signed_addend = negative * (insn & 0xfff);
7418 }
7419
7420 /* Compute the value (X) to go in the place. */
7421 if (r_type == R_ARM_LDR_PC_G0
7422 || r_type == R_ARM_LDR_PC_G1
7423 || r_type == R_ARM_LDR_PC_G2)
7424 /* PC relative. */
7425 signed_value = value - pc + signed_addend;
7426 else
7427 /* Section base relative. */
7428 signed_value = value - sb + signed_addend;
7429
7430 /* Calculate the value of the relevant G_{n-1} to obtain
7431 the residual at that stage. */
7432 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7433
7434 /* Check for overflow. */
7435 if (residual >= 0x1000)
7436 {
7437 (*_bfd_error_handler)
7438 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7439 input_bfd, input_section,
7440 (long) rel->r_offset, abs (signed_value), howto->name);
7441 return bfd_reloc_overflow;
7442 }
7443
7444 /* Mask out the value and U bit. */
7445 insn &= 0xff7ff000;
7446
7447 /* Set the U bit if the value to go in the place is non-negative. */
7448 if (signed_value >= 0)
7449 insn |= 1 << 23;
7450
7451 /* Encode the offset. */
7452 insn |= residual;
7453
7454 bfd_put_32 (input_bfd, insn, hit_data);
7455 }
7456 return bfd_reloc_ok;
7457
7458 case R_ARM_LDRS_PC_G0:
7459 case R_ARM_LDRS_PC_G1:
7460 case R_ARM_LDRS_PC_G2:
7461 case R_ARM_LDRS_SB_G0:
7462 case R_ARM_LDRS_SB_G1:
7463 case R_ARM_LDRS_SB_G2:
7464 {
7465 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7466 bfd_vma pc = input_section->output_section->vma
7467 + input_section->output_offset + rel->r_offset;
7468 bfd_vma sb = 0; /* See note above. */
7469 bfd_vma residual;
7470 bfd_signed_vma signed_value;
7471 int group = 0;
7472
7473 /* Determine which groups of bits to calculate. */
7474 switch (r_type)
7475 {
7476 case R_ARM_LDRS_PC_G0:
7477 case R_ARM_LDRS_SB_G0:
7478 group = 0;
7479 break;
7480
7481 case R_ARM_LDRS_PC_G1:
7482 case R_ARM_LDRS_SB_G1:
7483 group = 1;
7484 break;
7485
7486 case R_ARM_LDRS_PC_G2:
7487 case R_ARM_LDRS_SB_G2:
7488 group = 2;
7489 break;
7490
7491 default:
7492 abort ();
7493 }
7494
7495 /* If REL, extract the addend from the insn. If RELA, it will
7496 have already been fetched for us. */
7497 if (globals->use_rel)
7498 {
7499 int negative = (insn & (1 << 23)) ? 1 : -1;
7500 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
7501 }
7502
7503 /* Compute the value (X) to go in the place. */
7504 if (r_type == R_ARM_LDRS_PC_G0
7505 || r_type == R_ARM_LDRS_PC_G1
7506 || r_type == R_ARM_LDRS_PC_G2)
7507 /* PC relative. */
7508 signed_value = value - pc + signed_addend;
7509 else
7510 /* Section base relative. */
7511 signed_value = value - sb + signed_addend;
7512
7513 /* Calculate the value of the relevant G_{n-1} to obtain
7514 the residual at that stage. */
7515 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7516
7517 /* Check for overflow. */
7518 if (residual >= 0x100)
7519 {
7520 (*_bfd_error_handler)
7521 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7522 input_bfd, input_section,
7523 (long) rel->r_offset, abs (signed_value), howto->name);
7524 return bfd_reloc_overflow;
7525 }
7526
7527 /* Mask out the value and U bit. */
7528 insn &= 0xff7ff0f0;
7529
7530 /* Set the U bit if the value to go in the place is non-negative. */
7531 if (signed_value >= 0)
7532 insn |= 1 << 23;
7533
7534 /* Encode the offset. */
7535 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
7536
7537 bfd_put_32 (input_bfd, insn, hit_data);
7538 }
7539 return bfd_reloc_ok;
7540
7541 case R_ARM_LDC_PC_G0:
7542 case R_ARM_LDC_PC_G1:
7543 case R_ARM_LDC_PC_G2:
7544 case R_ARM_LDC_SB_G0:
7545 case R_ARM_LDC_SB_G1:
7546 case R_ARM_LDC_SB_G2:
7547 {
7548 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7549 bfd_vma pc = input_section->output_section->vma
7550 + input_section->output_offset + rel->r_offset;
7551 bfd_vma sb = 0; /* See note above. */
7552 bfd_vma residual;
7553 bfd_signed_vma signed_value;
7554 int group = 0;
7555
7556 /* Determine which groups of bits to calculate. */
7557 switch (r_type)
7558 {
7559 case R_ARM_LDC_PC_G0:
7560 case R_ARM_LDC_SB_G0:
7561 group = 0;
7562 break;
7563
7564 case R_ARM_LDC_PC_G1:
7565 case R_ARM_LDC_SB_G1:
7566 group = 1;
7567 break;
7568
7569 case R_ARM_LDC_PC_G2:
7570 case R_ARM_LDC_SB_G2:
7571 group = 2;
7572 break;
7573
7574 default:
7575 abort ();
7576 }
7577
7578 /* If REL, extract the addend from the insn. If RELA, it will
7579 have already been fetched for us. */
7580 if (globals->use_rel)
7581 {
7582 int negative = (insn & (1 << 23)) ? 1 : -1;
7583 signed_addend = negative * ((insn & 0xff) << 2);
7584 }
7585
7586 /* Compute the value (X) to go in the place. */
7587 if (r_type == R_ARM_LDC_PC_G0
7588 || r_type == R_ARM_LDC_PC_G1
7589 || r_type == R_ARM_LDC_PC_G2)
7590 /* PC relative. */
7591 signed_value = value - pc + signed_addend;
7592 else
7593 /* Section base relative. */
7594 signed_value = value - sb + signed_addend;
7595
7596 /* Calculate the value of the relevant G_{n-1} to obtain
7597 the residual at that stage. */
7598 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7599
7600 /* Check for overflow. (The absolute value to go in the place must be
7601 divisible by four and, after having been divided by four, must
7602 fit in eight bits.) */
7603 if ((residual & 0x3) != 0 || residual >= 0x400)
7604 {
7605 (*_bfd_error_handler)
7606 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7607 input_bfd, input_section,
7608 (long) rel->r_offset, abs (signed_value), howto->name);
7609 return bfd_reloc_overflow;
7610 }
7611
7612 /* Mask out the value and U bit. */
7613 insn &= 0xff7fff00;
7614
7615 /* Set the U bit if the value to go in the place is non-negative. */
7616 if (signed_value >= 0)
7617 insn |= 1 << 23;
7618
7619 /* Encode the offset. */
7620 insn |= residual >> 2;
7621
7622 bfd_put_32 (input_bfd, insn, hit_data);
7623 }
7624 return bfd_reloc_ok;
7625
7626 default:
7627 return bfd_reloc_notsupported;
7628 }
7629 }
7630
7631 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7632 static void
7633 arm_add_to_rel (bfd * abfd,
7634 bfd_byte * address,
7635 reloc_howto_type * howto,
7636 bfd_signed_vma increment)
7637 {
7638 bfd_signed_vma addend;
7639
7640 if (howto->type == R_ARM_THM_CALL
7641 || howto->type == R_ARM_THM_JUMP24)
7642 {
7643 int upper_insn, lower_insn;
7644 int upper, lower;
7645
7646 upper_insn = bfd_get_16 (abfd, address);
7647 lower_insn = bfd_get_16 (abfd, address + 2);
7648 upper = upper_insn & 0x7ff;
7649 lower = lower_insn & 0x7ff;
7650
7651 addend = (upper << 12) | (lower << 1);
7652 addend += increment;
7653 addend >>= 1;
7654
7655 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
7656 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
7657
7658 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
7659 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
7660 }
7661 else
7662 {
7663 bfd_vma contents;
7664
7665 contents = bfd_get_32 (abfd, address);
7666
7667 /* Get the (signed) value from the instruction. */
7668 addend = contents & howto->src_mask;
7669 if (addend & ((howto->src_mask + 1) >> 1))
7670 {
7671 bfd_signed_vma mask;
7672
7673 mask = -1;
7674 mask &= ~ howto->src_mask;
7675 addend |= mask;
7676 }
7677
7678 /* Add in the increment, (which is a byte value). */
7679 switch (howto->type)
7680 {
7681 default:
7682 addend += increment;
7683 break;
7684
7685 case R_ARM_PC24:
7686 case R_ARM_PLT32:
7687 case R_ARM_CALL:
7688 case R_ARM_JUMP24:
7689 addend <<= howto->size;
7690 addend += increment;
7691
7692 /* Should we check for overflow here ? */
7693
7694 /* Drop any undesired bits. */
7695 addend >>= howto->rightshift;
7696 break;
7697 }
7698
7699 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
7700
7701 bfd_put_32 (abfd, contents, address);
7702 }
7703 }
7704
7705 #define IS_ARM_TLS_RELOC(R_TYPE) \
7706 ((R_TYPE) == R_ARM_TLS_GD32 \
7707 || (R_TYPE) == R_ARM_TLS_LDO32 \
7708 || (R_TYPE) == R_ARM_TLS_LDM32 \
7709 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7710 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7711 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7712 || (R_TYPE) == R_ARM_TLS_LE32 \
7713 || (R_TYPE) == R_ARM_TLS_IE32)
7714
7715 /* Relocate an ARM ELF section. */
7716
7717 static bfd_boolean
7718 elf32_arm_relocate_section (bfd * output_bfd,
7719 struct bfd_link_info * info,
7720 bfd * input_bfd,
7721 asection * input_section,
7722 bfd_byte * contents,
7723 Elf_Internal_Rela * relocs,
7724 Elf_Internal_Sym * local_syms,
7725 asection ** local_sections)
7726 {
7727 Elf_Internal_Shdr *symtab_hdr;
7728 struct elf_link_hash_entry **sym_hashes;
7729 Elf_Internal_Rela *rel;
7730 Elf_Internal_Rela *relend;
7731 const char *name;
7732 struct elf32_arm_link_hash_table * globals;
7733
7734 globals = elf32_arm_hash_table (info);
7735
7736 symtab_hdr = & elf_symtab_hdr (input_bfd);
7737 sym_hashes = elf_sym_hashes (input_bfd);
7738
7739 rel = relocs;
7740 relend = relocs + input_section->reloc_count;
7741 for (; rel < relend; rel++)
7742 {
7743 int r_type;
7744 reloc_howto_type * howto;
7745 unsigned long r_symndx;
7746 Elf_Internal_Sym * sym;
7747 asection * sec;
7748 struct elf_link_hash_entry * h;
7749 bfd_vma relocation;
7750 bfd_reloc_status_type r;
7751 arelent bfd_reloc;
7752 char sym_type;
7753 bfd_boolean unresolved_reloc = FALSE;
7754 char *error_message = NULL;
7755
7756 r_symndx = ELF32_R_SYM (rel->r_info);
7757 r_type = ELF32_R_TYPE (rel->r_info);
7758 r_type = arm_real_reloc_type (globals, r_type);
7759
7760 if ( r_type == R_ARM_GNU_VTENTRY
7761 || r_type == R_ARM_GNU_VTINHERIT)
7762 continue;
7763
7764 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
7765 howto = bfd_reloc.howto;
7766
7767 h = NULL;
7768 sym = NULL;
7769 sec = NULL;
7770
7771 if (r_symndx < symtab_hdr->sh_info)
7772 {
7773 sym = local_syms + r_symndx;
7774 sym_type = ELF32_ST_TYPE (sym->st_info);
7775 sec = local_sections[r_symndx];
7776 if (globals->use_rel)
7777 {
7778 relocation = (sec->output_section->vma
7779 + sec->output_offset
7780 + sym->st_value);
7781 if (!info->relocatable
7782 && (sec->flags & SEC_MERGE)
7783 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7784 {
7785 asection *msec;
7786 bfd_vma addend, value;
7787
7788 switch (r_type)
7789 {
7790 case R_ARM_MOVW_ABS_NC:
7791 case R_ARM_MOVT_ABS:
7792 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7793 addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
7794 addend = (addend ^ 0x8000) - 0x8000;
7795 break;
7796
7797 case R_ARM_THM_MOVW_ABS_NC:
7798 case R_ARM_THM_MOVT_ABS:
7799 value = bfd_get_16 (input_bfd, contents + rel->r_offset)
7800 << 16;
7801 value |= bfd_get_16 (input_bfd,
7802 contents + rel->r_offset + 2);
7803 addend = ((value & 0xf7000) >> 4) | (value & 0xff)
7804 | ((value & 0x04000000) >> 15);
7805 addend = (addend ^ 0x8000) - 0x8000;
7806 break;
7807
7808 default:
7809 if (howto->rightshift
7810 || (howto->src_mask & (howto->src_mask + 1)))
7811 {
7812 (*_bfd_error_handler)
7813 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7814 input_bfd, input_section,
7815 (long) rel->r_offset, howto->name);
7816 return FALSE;
7817 }
7818
7819 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7820
7821 /* Get the (signed) value from the instruction. */
7822 addend = value & howto->src_mask;
7823 if (addend & ((howto->src_mask + 1) >> 1))
7824 {
7825 bfd_signed_vma mask;
7826
7827 mask = -1;
7828 mask &= ~ howto->src_mask;
7829 addend |= mask;
7830 }
7831 break;
7832 }
7833
7834 msec = sec;
7835 addend =
7836 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
7837 - relocation;
7838 addend += msec->output_section->vma + msec->output_offset;
7839
7840 /* Cases here must match those in the preceeding
7841 switch statement. */
7842 switch (r_type)
7843 {
7844 case R_ARM_MOVW_ABS_NC:
7845 case R_ARM_MOVT_ABS:
7846 value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
7847 | (addend & 0xfff);
7848 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7849 break;
7850
7851 case R_ARM_THM_MOVW_ABS_NC:
7852 case R_ARM_THM_MOVT_ABS:
7853 value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
7854 | (addend & 0xff) | ((addend & 0x0800) << 15);
7855 bfd_put_16 (input_bfd, value >> 16,
7856 contents + rel->r_offset);
7857 bfd_put_16 (input_bfd, value,
7858 contents + rel->r_offset + 2);
7859 break;
7860
7861 default:
7862 value = (value & ~ howto->dst_mask)
7863 | (addend & howto->dst_mask);
7864 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7865 break;
7866 }
7867 }
7868 }
7869 else
7870 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7871 }
7872 else
7873 {
7874 bfd_boolean warned;
7875
7876 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7877 r_symndx, symtab_hdr, sym_hashes,
7878 h, sec, relocation,
7879 unresolved_reloc, warned);
7880
7881 sym_type = h->type;
7882 }
7883
7884 if (sec != NULL && elf_discarded_section (sec))
7885 {
7886 /* For relocs against symbols from removed linkonce sections,
7887 or sections discarded by a linker script, we just want the
7888 section contents zeroed. Avoid any special processing. */
7889 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
7890 rel->r_info = 0;
7891 rel->r_addend = 0;
7892 continue;
7893 }
7894
7895 if (info->relocatable)
7896 {
7897 /* This is a relocatable link. We don't have to change
7898 anything, unless the reloc is against a section symbol,
7899 in which case we have to adjust according to where the
7900 section symbol winds up in the output section. */
7901 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7902 {
7903 if (globals->use_rel)
7904 arm_add_to_rel (input_bfd, contents + rel->r_offset,
7905 howto, (bfd_signed_vma) sec->output_offset);
7906 else
7907 rel->r_addend += sec->output_offset;
7908 }
7909 continue;
7910 }
7911
7912 if (h != NULL)
7913 name = h->root.root.string;
7914 else
7915 {
7916 name = (bfd_elf_string_from_elf_section
7917 (input_bfd, symtab_hdr->sh_link, sym->st_name));
7918 if (name == NULL || *name == '\0')
7919 name = bfd_section_name (input_bfd, sec);
7920 }
7921
7922 if (r_symndx != 0
7923 && r_type != R_ARM_NONE
7924 && (h == NULL
7925 || h->root.type == bfd_link_hash_defined
7926 || h->root.type == bfd_link_hash_defweak)
7927 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7928 {
7929 (*_bfd_error_handler)
7930 ((sym_type == STT_TLS
7931 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7932 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
7933 input_bfd,
7934 input_section,
7935 (long) rel->r_offset,
7936 howto->name,
7937 name);
7938 }
7939
7940 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
7941 input_section, contents, rel,
7942 relocation, info, sec, name,
7943 (h ? ELF_ST_TYPE (h->type) :
7944 ELF_ST_TYPE (sym->st_info)), h,
7945 &unresolved_reloc, &error_message);
7946
7947 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7948 because such sections are not SEC_ALLOC and thus ld.so will
7949 not process them. */
7950 if (unresolved_reloc
7951 && !((input_section->flags & SEC_DEBUGGING) != 0
7952 && h->def_dynamic))
7953 {
7954 (*_bfd_error_handler)
7955 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7956 input_bfd,
7957 input_section,
7958 (long) rel->r_offset,
7959 howto->name,
7960 h->root.root.string);
7961 return FALSE;
7962 }
7963
7964 if (r != bfd_reloc_ok)
7965 {
7966 switch (r)
7967 {
7968 case bfd_reloc_overflow:
7969 /* If the overflowing reloc was to an undefined symbol,
7970 we have already printed one error message and there
7971 is no point complaining again. */
7972 if ((! h ||
7973 h->root.type != bfd_link_hash_undefined)
7974 && (!((*info->callbacks->reloc_overflow)
7975 (info, (h ? &h->root : NULL), name, howto->name,
7976 (bfd_vma) 0, input_bfd, input_section,
7977 rel->r_offset))))
7978 return FALSE;
7979 break;
7980
7981 case bfd_reloc_undefined:
7982 if (!((*info->callbacks->undefined_symbol)
7983 (info, name, input_bfd, input_section,
7984 rel->r_offset, TRUE)))
7985 return FALSE;
7986 break;
7987
7988 case bfd_reloc_outofrange:
7989 error_message = _("out of range");
7990 goto common_error;
7991
7992 case bfd_reloc_notsupported:
7993 error_message = _("unsupported relocation");
7994 goto common_error;
7995
7996 case bfd_reloc_dangerous:
7997 /* error_message should already be set. */
7998 goto common_error;
7999
8000 default:
8001 error_message = _("unknown error");
8002 /* Fall through. */
8003
8004 common_error:
8005 BFD_ASSERT (error_message != NULL);
8006 if (!((*info->callbacks->reloc_dangerous)
8007 (info, error_message, input_bfd, input_section,
8008 rel->r_offset)))
8009 return FALSE;
8010 break;
8011 }
8012 }
8013 }
8014
8015 return TRUE;
8016 }
8017
8018 /* Set the right machine number. */
8019
8020 static bfd_boolean
8021 elf32_arm_object_p (bfd *abfd)
8022 {
8023 unsigned int mach;
8024
8025 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
8026
8027 if (mach != bfd_mach_arm_unknown)
8028 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8029
8030 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
8031 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
8032
8033 else
8034 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8035
8036 return TRUE;
8037 }
8038
8039 /* Function to keep ARM specific flags in the ELF header. */
8040
8041 static bfd_boolean
8042 elf32_arm_set_private_flags (bfd *abfd, flagword flags)
8043 {
8044 if (elf_flags_init (abfd)
8045 && elf_elfheader (abfd)->e_flags != flags)
8046 {
8047 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
8048 {
8049 if (flags & EF_ARM_INTERWORK)
8050 (*_bfd_error_handler)
8051 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8052 abfd);
8053 else
8054 _bfd_error_handler
8055 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8056 abfd);
8057 }
8058 }
8059 else
8060 {
8061 elf_elfheader (abfd)->e_flags = flags;
8062 elf_flags_init (abfd) = TRUE;
8063 }
8064
8065 return TRUE;
8066 }
8067
8068 /* Copy backend specific data from one object module to another. */
8069
8070 static bfd_boolean
8071 elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
8072 {
8073 flagword in_flags;
8074 flagword out_flags;
8075
8076 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
8077 return TRUE;
8078
8079 in_flags = elf_elfheader (ibfd)->e_flags;
8080 out_flags = elf_elfheader (obfd)->e_flags;
8081
8082 if (elf_flags_init (obfd)
8083 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
8084 && in_flags != out_flags)
8085 {
8086 /* Cannot mix APCS26 and APCS32 code. */
8087 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
8088 return FALSE;
8089
8090 /* Cannot mix float APCS and non-float APCS code. */
8091 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
8092 return FALSE;
8093
8094 /* If the src and dest have different interworking flags
8095 then turn off the interworking bit. */
8096 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8097 {
8098 if (out_flags & EF_ARM_INTERWORK)
8099 _bfd_error_handler
8100 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8101 obfd, ibfd);
8102
8103 in_flags &= ~EF_ARM_INTERWORK;
8104 }
8105
8106 /* Likewise for PIC, though don't warn for this case. */
8107 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
8108 in_flags &= ~EF_ARM_PIC;
8109 }
8110
8111 elf_elfheader (obfd)->e_flags = in_flags;
8112 elf_flags_init (obfd) = TRUE;
8113
8114 /* Also copy the EI_OSABI field. */
8115 elf_elfheader (obfd)->e_ident[EI_OSABI] =
8116 elf_elfheader (ibfd)->e_ident[EI_OSABI];
8117
8118 /* Copy object attributes. */
8119 _bfd_elf_copy_obj_attributes (ibfd, obfd);
8120
8121 return TRUE;
8122 }
8123
8124 /* Values for Tag_ABI_PCS_R9_use. */
8125 enum
8126 {
8127 AEABI_R9_V6,
8128 AEABI_R9_SB,
8129 AEABI_R9_TLS,
8130 AEABI_R9_unused
8131 };
8132
8133 /* Values for Tag_ABI_PCS_RW_data. */
8134 enum
8135 {
8136 AEABI_PCS_RW_data_absolute,
8137 AEABI_PCS_RW_data_PCrel,
8138 AEABI_PCS_RW_data_SBrel,
8139 AEABI_PCS_RW_data_unused
8140 };
8141
8142 /* Values for Tag_ABI_enum_size. */
8143 enum
8144 {
8145 AEABI_enum_unused,
8146 AEABI_enum_short,
8147 AEABI_enum_wide,
8148 AEABI_enum_forced_wide
8149 };
8150
8151 /* Determine whether an object attribute tag takes an integer, a
8152 string or both. */
8153
8154 static int
8155 elf32_arm_obj_attrs_arg_type (int tag)
8156 {
8157 if (tag == Tag_compatibility)
8158 return 3;
8159 else if (tag == 4 || tag == 5)
8160 return 2;
8161 else if (tag < 32)
8162 return 1;
8163 else
8164 return (tag & 1) != 0 ? 2 : 1;
8165 }
8166
8167 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8168 are conflicting attributes. */
8169
8170 static bfd_boolean
8171 elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
8172 {
8173 obj_attribute *in_attr;
8174 obj_attribute *out_attr;
8175 obj_attribute_list *in_list;
8176 /* Some tags have 0 = don't care, 1 = strong requirement,
8177 2 = weak requirement. */
8178 static const int order_312[3] = {3, 1, 2};
8179 /* For use with Tag_VFP_arch. */
8180 static const int order_01243[5] = {0, 1, 2, 4, 3};
8181 int i;
8182
8183 if (!elf_known_obj_attributes_proc (obfd)[0].i)
8184 {
8185 /* This is the first object. Copy the attributes. */
8186 _bfd_elf_copy_obj_attributes (ibfd, obfd);
8187
8188 /* Use the Tag_null value to indicate the attributes have been
8189 initialized. */
8190 elf_known_obj_attributes_proc (obfd)[0].i = 1;
8191
8192 return TRUE;
8193 }
8194
8195 in_attr = elf_known_obj_attributes_proc (ibfd);
8196 out_attr = elf_known_obj_attributes_proc (obfd);
8197 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8198 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
8199 {
8200 /* Ignore mismatches if teh object doesn't use floating point. */
8201 if (out_attr[Tag_ABI_FP_number_model].i == 0)
8202 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
8203 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
8204 {
8205 _bfd_error_handler
8206 (_("ERROR: %B uses VFP register arguments, %B does not"),
8207 ibfd, obfd);
8208 return FALSE;
8209 }
8210 }
8211
8212 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
8213 {
8214 /* Merge this attribute with existing attributes. */
8215 switch (i)
8216 {
8217 case Tag_CPU_raw_name:
8218 case Tag_CPU_name:
8219 /* Use whichever has the greatest architecture requirements. We
8220 won't necessarily have both the above tags, so make sure input
8221 name is non-NULL. */
8222 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i
8223 && in_attr[i].s)
8224 out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s);
8225 break;
8226
8227 case Tag_ABI_optimization_goals:
8228 case Tag_ABI_FP_optimization_goals:
8229 /* Use the first value seen. */
8230 break;
8231
8232 case Tag_CPU_arch:
8233 case Tag_ARM_ISA_use:
8234 case Tag_THUMB_ISA_use:
8235 case Tag_WMMX_arch:
8236 case Tag_NEON_arch:
8237 /* ??? Do NEON and WMMX conflict? */
8238 case Tag_ABI_FP_rounding:
8239 case Tag_ABI_FP_denormal:
8240 case Tag_ABI_FP_exceptions:
8241 case Tag_ABI_FP_user_exceptions:
8242 case Tag_ABI_FP_number_model:
8243 case Tag_ABI_align8_preserved:
8244 case Tag_ABI_HardFP_use:
8245 /* Use the largest value specified. */
8246 if (in_attr[i].i > out_attr[i].i)
8247 out_attr[i].i = in_attr[i].i;
8248 break;
8249
8250 case Tag_CPU_arch_profile:
8251 /* Warn if conflicting architecture profiles used. */
8252 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
8253 {
8254 _bfd_error_handler
8255 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
8256 ibfd, in_attr[i].i, out_attr[i].i);
8257 return FALSE;
8258 }
8259 if (in_attr[i].i)
8260 out_attr[i].i = in_attr[i].i;
8261 break;
8262 case Tag_VFP_arch:
8263 if (in_attr[i].i > 4 || out_attr[i].i > 4
8264 || order_01243[in_attr[i].i] > order_01243[out_attr[i].i])
8265 out_attr[i].i = in_attr[i].i;
8266 break;
8267 case Tag_PCS_config:
8268 if (out_attr[i].i == 0)
8269 out_attr[i].i = in_attr[i].i;
8270 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
8271 {
8272 /* It's sometimes ok to mix different configs, so this is only
8273 a warning. */
8274 _bfd_error_handler
8275 (_("Warning: %B: Conflicting platform configuration"), ibfd);
8276 }
8277 break;
8278 case Tag_ABI_PCS_R9_use:
8279 if (in_attr[i].i != out_attr[i].i
8280 && out_attr[i].i != AEABI_R9_unused
8281 && in_attr[i].i != AEABI_R9_unused)
8282 {
8283 _bfd_error_handler
8284 (_("ERROR: %B: Conflicting use of R9"), ibfd);
8285 return FALSE;
8286 }
8287 if (out_attr[i].i == AEABI_R9_unused)
8288 out_attr[i].i = in_attr[i].i;
8289 break;
8290 case Tag_ABI_PCS_RW_data:
8291 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
8292 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
8293 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
8294 {
8295 _bfd_error_handler
8296 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
8297 ibfd);
8298 return FALSE;
8299 }
8300 /* Use the smallest value specified. */
8301 if (in_attr[i].i < out_attr[i].i)
8302 out_attr[i].i = in_attr[i].i;
8303 break;
8304 case Tag_ABI_PCS_RO_data:
8305 /* Use the smallest value specified. */
8306 if (in_attr[i].i < out_attr[i].i)
8307 out_attr[i].i = in_attr[i].i;
8308 break;
8309 case Tag_ABI_PCS_GOT_use:
8310 if (in_attr[i].i > 2 || out_attr[i].i > 2
8311 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
8312 out_attr[i].i = in_attr[i].i;
8313 break;
8314 case Tag_ABI_PCS_wchar_t:
8315 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i
8316 && !elf_arm_tdata (obfd)->no_wchar_size_warning)
8317 {
8318 _bfd_error_handler
8319 (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
8320 ibfd, in_attr[i].i, out_attr[i].i);
8321 }
8322 else if (in_attr[i].i && !out_attr[i].i)
8323 out_attr[i].i = in_attr[i].i;
8324 break;
8325 case Tag_ABI_align8_needed:
8326 /* ??? Check against Tag_ABI_align8_preserved. */
8327 if (in_attr[i].i > 2 || out_attr[i].i > 2
8328 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
8329 out_attr[i].i = in_attr[i].i;
8330 break;
8331 case Tag_ABI_enum_size:
8332 if (in_attr[i].i != AEABI_enum_unused)
8333 {
8334 if (out_attr[i].i == AEABI_enum_unused
8335 || out_attr[i].i == AEABI_enum_forced_wide)
8336 {
8337 /* The existing object is compatible with anything.
8338 Use whatever requirements the new object has. */
8339 out_attr[i].i = in_attr[i].i;
8340 }
8341 else if (in_attr[i].i != AEABI_enum_forced_wide
8342 && out_attr[i].i != in_attr[i].i
8343 && !elf_arm_tdata (obfd)->no_enum_size_warning)
8344 {
8345 const char *aeabi_enum_names[] =
8346 { "", "variable-size", "32-bit", "" };
8347 _bfd_error_handler
8348 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
8349 ibfd, aeabi_enum_names[in_attr[i].i],
8350 aeabi_enum_names[out_attr[i].i]);
8351 }
8352 }
8353 break;
8354 case Tag_ABI_VFP_args:
8355 /* Aready done. */
8356 break;
8357 case Tag_ABI_WMMX_args:
8358 if (in_attr[i].i != out_attr[i].i)
8359 {
8360 _bfd_error_handler
8361 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
8362 ibfd, obfd);
8363 return FALSE;
8364 }
8365 break;
8366 default: /* All known attributes should be explicitly covered. */
8367 abort ();
8368 }
8369
8370 if (in_attr[i].type && !out_attr[i].type)
8371 switch (in_attr[i].type)
8372 {
8373 case 1:
8374 if (out_attr[i].i)
8375 out_attr[i].type = 1;
8376 break;
8377
8378 case 2:
8379 if (out_attr[i].s)
8380 out_attr[i].type = 2;
8381 break;
8382
8383 default:
8384 abort ();
8385 }
8386 }
8387
8388 /* Merge Tag_compatibility attributes and any common GNU ones. */
8389 _bfd_elf_merge_object_attributes (ibfd, obfd);
8390
8391 /* Check for any attributes not known on ARM. */
8392 in_list = elf_other_obj_attributes_proc (ibfd);
8393 while (in_list && in_list->tag == Tag_compatibility)
8394 in_list = in_list->next;
8395
8396 for (; in_list; in_list = in_list->next)
8397 {
8398 if ((in_list->tag & 128) < 64)
8399 {
8400 _bfd_error_handler
8401 (_("Warning: %B: Unknown EABI object attribute %d"),
8402 ibfd, in_list->tag);
8403 break;
8404 }
8405 }
8406 return TRUE;
8407 }
8408
8409
8410 /* Return TRUE if the two EABI versions are incompatible. */
8411
8412 static bfd_boolean
8413 elf32_arm_versions_compatible (unsigned iver, unsigned over)
8414 {
8415 /* v4 and v5 are the same spec before and after it was released,
8416 so allow mixing them. */
8417 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
8418 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
8419 return TRUE;
8420
8421 return (iver == over);
8422 }
8423
8424 /* Merge backend specific data from an object file to the output
8425 object file when linking. */
8426
8427 static bfd_boolean
8428 elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
8429 {
8430 flagword out_flags;
8431 flagword in_flags;
8432 bfd_boolean flags_compatible = TRUE;
8433 asection *sec;
8434
8435 /* Check if we have the same endianess. */
8436 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
8437 return FALSE;
8438
8439 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
8440 return TRUE;
8441
8442 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
8443 return FALSE;
8444
8445 /* The input BFD must have had its flags initialised. */
8446 /* The following seems bogus to me -- The flags are initialized in
8447 the assembler but I don't think an elf_flags_init field is
8448 written into the object. */
8449 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8450
8451 in_flags = elf_elfheader (ibfd)->e_flags;
8452 out_flags = elf_elfheader (obfd)->e_flags;
8453
8454 /* In theory there is no reason why we couldn't handle this. However
8455 in practice it isn't even close to working and there is no real
8456 reason to want it. */
8457 if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4
8458 && !(ibfd->flags & DYNAMIC)
8459 && (in_flags & EF_ARM_BE8))
8460 {
8461 _bfd_error_handler (_("ERROR: %B is already in final BE8 format"),
8462 ibfd);
8463 return FALSE;
8464 }
8465
8466 if (!elf_flags_init (obfd))
8467 {
8468 /* If the input is the default architecture and had the default
8469 flags then do not bother setting the flags for the output
8470 architecture, instead allow future merges to do this. If no
8471 future merges ever set these flags then they will retain their
8472 uninitialised values, which surprise surprise, correspond
8473 to the default values. */
8474 if (bfd_get_arch_info (ibfd)->the_default
8475 && elf_elfheader (ibfd)->e_flags == 0)
8476 return TRUE;
8477
8478 elf_flags_init (obfd) = TRUE;
8479 elf_elfheader (obfd)->e_flags = in_flags;
8480
8481 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
8482 && bfd_get_arch_info (obfd)->the_default)
8483 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
8484
8485 return TRUE;
8486 }
8487
8488 /* Determine what should happen if the input ARM architecture
8489 does not match the output ARM architecture. */
8490 if (! bfd_arm_merge_machines (ibfd, obfd))
8491 return FALSE;
8492
8493 /* Identical flags must be compatible. */
8494 if (in_flags == out_flags)
8495 return TRUE;
8496
8497 /* Check to see if the input BFD actually contains any sections. If
8498 not, its flags may not have been initialised either, but it
8499 cannot actually cause any incompatiblity. Do not short-circuit
8500 dynamic objects; their section list may be emptied by
8501 elf_link_add_object_symbols.
8502
8503 Also check to see if there are no code sections in the input.
8504 In this case there is no need to check for code specific flags.
8505 XXX - do we need to worry about floating-point format compatability
8506 in data sections ? */
8507 if (!(ibfd->flags & DYNAMIC))
8508 {
8509 bfd_boolean null_input_bfd = TRUE;
8510 bfd_boolean only_data_sections = TRUE;
8511
8512 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8513 {
8514 /* Ignore synthetic glue sections. */
8515 if (strcmp (sec->name, ".glue_7")
8516 && strcmp (sec->name, ".glue_7t"))
8517 {
8518 if ((bfd_get_section_flags (ibfd, sec)
8519 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
8520 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
8521 only_data_sections = FALSE;
8522
8523 null_input_bfd = FALSE;
8524 break;
8525 }
8526 }
8527
8528 if (null_input_bfd || only_data_sections)
8529 return TRUE;
8530 }
8531
8532 /* Complain about various flag mismatches. */
8533 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
8534 EF_ARM_EABI_VERSION (out_flags)))
8535 {
8536 _bfd_error_handler
8537 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
8538 ibfd, obfd,
8539 (in_flags & EF_ARM_EABIMASK) >> 24,
8540 (out_flags & EF_ARM_EABIMASK) >> 24);
8541 return FALSE;
8542 }
8543
8544 /* Not sure what needs to be checked for EABI versions >= 1. */
8545 /* VxWorks libraries do not use these flags. */
8546 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
8547 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
8548 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
8549 {
8550 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
8551 {
8552 _bfd_error_handler
8553 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
8554 ibfd, obfd,
8555 in_flags & EF_ARM_APCS_26 ? 26 : 32,
8556 out_flags & EF_ARM_APCS_26 ? 26 : 32);
8557 flags_compatible = FALSE;
8558 }
8559
8560 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
8561 {
8562 if (in_flags & EF_ARM_APCS_FLOAT)
8563 _bfd_error_handler
8564 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
8565 ibfd, obfd);
8566 else
8567 _bfd_error_handler
8568 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
8569 ibfd, obfd);
8570
8571 flags_compatible = FALSE;
8572 }
8573
8574 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
8575 {
8576 if (in_flags & EF_ARM_VFP_FLOAT)
8577 _bfd_error_handler
8578 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
8579 ibfd, obfd);
8580 else
8581 _bfd_error_handler
8582 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
8583 ibfd, obfd);
8584
8585 flags_compatible = FALSE;
8586 }
8587
8588 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
8589 {
8590 if (in_flags & EF_ARM_MAVERICK_FLOAT)
8591 _bfd_error_handler
8592 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
8593 ibfd, obfd);
8594 else
8595 _bfd_error_handler
8596 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
8597 ibfd, obfd);
8598
8599 flags_compatible = FALSE;
8600 }
8601
8602 #ifdef EF_ARM_SOFT_FLOAT
8603 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
8604 {
8605 /* We can allow interworking between code that is VFP format
8606 layout, and uses either soft float or integer regs for
8607 passing floating point arguments and results. We already
8608 know that the APCS_FLOAT flags match; similarly for VFP
8609 flags. */
8610 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
8611 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
8612 {
8613 if (in_flags & EF_ARM_SOFT_FLOAT)
8614 _bfd_error_handler
8615 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
8616 ibfd, obfd);
8617 else
8618 _bfd_error_handler
8619 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
8620 ibfd, obfd);
8621
8622 flags_compatible = FALSE;
8623 }
8624 }
8625 #endif
8626
8627 /* Interworking mismatch is only a warning. */
8628 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8629 {
8630 if (in_flags & EF_ARM_INTERWORK)
8631 {
8632 _bfd_error_handler
8633 (_("Warning: %B supports interworking, whereas %B does not"),
8634 ibfd, obfd);
8635 }
8636 else
8637 {
8638 _bfd_error_handler
8639 (_("Warning: %B does not support interworking, whereas %B does"),
8640 ibfd, obfd);
8641 }
8642 }
8643 }
8644
8645 return flags_compatible;
8646 }
8647
8648 /* Display the flags field. */
8649
8650 static bfd_boolean
8651 elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
8652 {
8653 FILE * file = (FILE *) ptr;
8654 unsigned long flags;
8655
8656 BFD_ASSERT (abfd != NULL && ptr != NULL);
8657
8658 /* Print normal ELF private data. */
8659 _bfd_elf_print_private_bfd_data (abfd, ptr);
8660
8661 flags = elf_elfheader (abfd)->e_flags;
8662 /* Ignore init flag - it may not be set, despite the flags field
8663 containing valid data. */
8664
8665 /* xgettext:c-format */
8666 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
8667
8668 switch (EF_ARM_EABI_VERSION (flags))
8669 {
8670 case EF_ARM_EABI_UNKNOWN:
8671 /* The following flag bits are GNU extensions and not part of the
8672 official ARM ELF extended ABI. Hence they are only decoded if
8673 the EABI version is not set. */
8674 if (flags & EF_ARM_INTERWORK)
8675 fprintf (file, _(" [interworking enabled]"));
8676
8677 if (flags & EF_ARM_APCS_26)
8678 fprintf (file, " [APCS-26]");
8679 else
8680 fprintf (file, " [APCS-32]");
8681
8682 if (flags & EF_ARM_VFP_FLOAT)
8683 fprintf (file, _(" [VFP float format]"));
8684 else if (flags & EF_ARM_MAVERICK_FLOAT)
8685 fprintf (file, _(" [Maverick float format]"));
8686 else
8687 fprintf (file, _(" [FPA float format]"));
8688
8689 if (flags & EF_ARM_APCS_FLOAT)
8690 fprintf (file, _(" [floats passed in float registers]"));
8691
8692 if (flags & EF_ARM_PIC)
8693 fprintf (file, _(" [position independent]"));
8694
8695 if (flags & EF_ARM_NEW_ABI)
8696 fprintf (file, _(" [new ABI]"));
8697
8698 if (flags & EF_ARM_OLD_ABI)
8699 fprintf (file, _(" [old ABI]"));
8700
8701 if (flags & EF_ARM_SOFT_FLOAT)
8702 fprintf (file, _(" [software FP]"));
8703
8704 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
8705 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
8706 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
8707 | EF_ARM_MAVERICK_FLOAT);
8708 break;
8709
8710 case EF_ARM_EABI_VER1:
8711 fprintf (file, _(" [Version1 EABI]"));
8712
8713 if (flags & EF_ARM_SYMSARESORTED)
8714 fprintf (file, _(" [sorted symbol table]"));
8715 else
8716 fprintf (file, _(" [unsorted symbol table]"));
8717
8718 flags &= ~ EF_ARM_SYMSARESORTED;
8719 break;
8720
8721 case EF_ARM_EABI_VER2:
8722 fprintf (file, _(" [Version2 EABI]"));
8723
8724 if (flags & EF_ARM_SYMSARESORTED)
8725 fprintf (file, _(" [sorted symbol table]"));
8726 else
8727 fprintf (file, _(" [unsorted symbol table]"));
8728
8729 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
8730 fprintf (file, _(" [dynamic symbols use segment index]"));
8731
8732 if (flags & EF_ARM_MAPSYMSFIRST)
8733 fprintf (file, _(" [mapping symbols precede others]"));
8734
8735 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
8736 | EF_ARM_MAPSYMSFIRST);
8737 break;
8738
8739 case EF_ARM_EABI_VER3:
8740 fprintf (file, _(" [Version3 EABI]"));
8741 break;
8742
8743 case EF_ARM_EABI_VER4:
8744 fprintf (file, _(" [Version4 EABI]"));
8745 goto eabi;
8746
8747 case EF_ARM_EABI_VER5:
8748 fprintf (file, _(" [Version5 EABI]"));
8749 eabi:
8750 if (flags & EF_ARM_BE8)
8751 fprintf (file, _(" [BE8]"));
8752
8753 if (flags & EF_ARM_LE8)
8754 fprintf (file, _(" [LE8]"));
8755
8756 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
8757 break;
8758
8759 default:
8760 fprintf (file, _(" <EABI version unrecognised>"));
8761 break;
8762 }
8763
8764 flags &= ~ EF_ARM_EABIMASK;
8765
8766 if (flags & EF_ARM_RELEXEC)
8767 fprintf (file, _(" [relocatable executable]"));
8768
8769 if (flags & EF_ARM_HASENTRY)
8770 fprintf (file, _(" [has entry point]"));
8771
8772 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
8773
8774 if (flags)
8775 fprintf (file, _("<Unrecognised flag bits set>"));
8776
8777 fputc ('\n', file);
8778
8779 return TRUE;
8780 }
8781
8782 static int
8783 elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
8784 {
8785 switch (ELF_ST_TYPE (elf_sym->st_info))
8786 {
8787 case STT_ARM_TFUNC:
8788 return ELF_ST_TYPE (elf_sym->st_info);
8789
8790 case STT_ARM_16BIT:
8791 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
8792 This allows us to distinguish between data used by Thumb instructions
8793 and non-data (which is probably code) inside Thumb regions of an
8794 executable. */
8795 if (type != STT_OBJECT && type != STT_TLS)
8796 return ELF_ST_TYPE (elf_sym->st_info);
8797 break;
8798
8799 default:
8800 break;
8801 }
8802
8803 return type;
8804 }
8805
8806 static asection *
8807 elf32_arm_gc_mark_hook (asection *sec,
8808 struct bfd_link_info *info,
8809 Elf_Internal_Rela *rel,
8810 struct elf_link_hash_entry *h,
8811 Elf_Internal_Sym *sym)
8812 {
8813 if (h != NULL)
8814 switch (ELF32_R_TYPE (rel->r_info))
8815 {
8816 case R_ARM_GNU_VTINHERIT:
8817 case R_ARM_GNU_VTENTRY:
8818 return NULL;
8819 }
8820
8821 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
8822 }
8823
8824 /* Update the got entry reference counts for the section being removed. */
8825
8826 static bfd_boolean
8827 elf32_arm_gc_sweep_hook (bfd * abfd,
8828 struct bfd_link_info * info,
8829 asection * sec,
8830 const Elf_Internal_Rela * relocs)
8831 {
8832 Elf_Internal_Shdr *symtab_hdr;
8833 struct elf_link_hash_entry **sym_hashes;
8834 bfd_signed_vma *local_got_refcounts;
8835 const Elf_Internal_Rela *rel, *relend;
8836 struct elf32_arm_link_hash_table * globals;
8837
8838 if (info->relocatable)
8839 return TRUE;
8840
8841 globals = elf32_arm_hash_table (info);
8842
8843 elf_section_data (sec)->local_dynrel = NULL;
8844
8845 symtab_hdr = & elf_symtab_hdr (abfd);
8846 sym_hashes = elf_sym_hashes (abfd);
8847 local_got_refcounts = elf_local_got_refcounts (abfd);
8848
8849 check_use_blx (globals);
8850
8851 relend = relocs + sec->reloc_count;
8852 for (rel = relocs; rel < relend; rel++)
8853 {
8854 unsigned long r_symndx;
8855 struct elf_link_hash_entry *h = NULL;
8856 int r_type;
8857
8858 r_symndx = ELF32_R_SYM (rel->r_info);
8859 if (r_symndx >= symtab_hdr->sh_info)
8860 {
8861 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8862 while (h->root.type == bfd_link_hash_indirect
8863 || h->root.type == bfd_link_hash_warning)
8864 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8865 }
8866
8867 r_type = ELF32_R_TYPE (rel->r_info);
8868 r_type = arm_real_reloc_type (globals, r_type);
8869 switch (r_type)
8870 {
8871 case R_ARM_GOT32:
8872 case R_ARM_GOT_PREL:
8873 case R_ARM_TLS_GD32:
8874 case R_ARM_TLS_IE32:
8875 if (h != NULL)
8876 {
8877 if (h->got.refcount > 0)
8878 h->got.refcount -= 1;
8879 }
8880 else if (local_got_refcounts != NULL)
8881 {
8882 if (local_got_refcounts[r_symndx] > 0)
8883 local_got_refcounts[r_symndx] -= 1;
8884 }
8885 break;
8886
8887 case R_ARM_TLS_LDM32:
8888 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
8889 break;
8890
8891 case R_ARM_ABS32:
8892 case R_ARM_ABS32_NOI:
8893 case R_ARM_REL32:
8894 case R_ARM_REL32_NOI:
8895 case R_ARM_PC24:
8896 case R_ARM_PLT32:
8897 case R_ARM_CALL:
8898 case R_ARM_JUMP24:
8899 case R_ARM_PREL31:
8900 case R_ARM_THM_CALL:
8901 case R_ARM_THM_JUMP24:
8902 case R_ARM_THM_JUMP19:
8903 case R_ARM_MOVW_ABS_NC:
8904 case R_ARM_MOVT_ABS:
8905 case R_ARM_MOVW_PREL_NC:
8906 case R_ARM_MOVT_PREL:
8907 case R_ARM_THM_MOVW_ABS_NC:
8908 case R_ARM_THM_MOVT_ABS:
8909 case R_ARM_THM_MOVW_PREL_NC:
8910 case R_ARM_THM_MOVT_PREL:
8911 /* Should the interworking branches be here also? */
8912
8913 if (h != NULL)
8914 {
8915 struct elf32_arm_link_hash_entry *eh;
8916 struct elf32_arm_relocs_copied **pp;
8917 struct elf32_arm_relocs_copied *p;
8918
8919 eh = (struct elf32_arm_link_hash_entry *) h;
8920
8921 if (h->plt.refcount > 0)
8922 {
8923 h->plt.refcount -= 1;
8924 if (r_type == R_ARM_THM_CALL)
8925 eh->plt_maybe_thumb_refcount--;
8926
8927 if (r_type == R_ARM_THM_JUMP24
8928 || r_type == R_ARM_THM_JUMP19)
8929 eh->plt_thumb_refcount--;
8930 }
8931
8932 if (r_type == R_ARM_ABS32
8933 || r_type == R_ARM_REL32
8934 || r_type == R_ARM_ABS32_NOI
8935 || r_type == R_ARM_REL32_NOI)
8936 {
8937 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
8938 pp = &p->next)
8939 if (p->section == sec)
8940 {
8941 p->count -= 1;
8942 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
8943 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
8944 p->pc_count -= 1;
8945 if (p->count == 0)
8946 *pp = p->next;
8947 break;
8948 }
8949 }
8950 }
8951 break;
8952
8953 default:
8954 break;
8955 }
8956 }
8957
8958 return TRUE;
8959 }
8960
8961 /* Look through the relocs for a section during the first phase. */
8962
8963 static bfd_boolean
8964 elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
8965 asection *sec, const Elf_Internal_Rela *relocs)
8966 {
8967 Elf_Internal_Shdr *symtab_hdr;
8968 struct elf_link_hash_entry **sym_hashes;
8969 const Elf_Internal_Rela *rel;
8970 const Elf_Internal_Rela *rel_end;
8971 bfd *dynobj;
8972 asection *sreloc;
8973 bfd_vma *local_got_offsets;
8974 struct elf32_arm_link_hash_table *htab;
8975 bfd_boolean needs_plt;
8976
8977 if (info->relocatable)
8978 return TRUE;
8979
8980 BFD_ASSERT (is_arm_elf (abfd));
8981
8982 htab = elf32_arm_hash_table (info);
8983 sreloc = NULL;
8984
8985 /* Create dynamic sections for relocatable executables so that we can
8986 copy relocations. */
8987 if (htab->root.is_relocatable_executable
8988 && ! htab->root.dynamic_sections_created)
8989 {
8990 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
8991 return FALSE;
8992 }
8993
8994 dynobj = elf_hash_table (info)->dynobj;
8995 local_got_offsets = elf_local_got_offsets (abfd);
8996
8997 symtab_hdr = & elf_symtab_hdr (abfd);
8998 sym_hashes = elf_sym_hashes (abfd);
8999
9000 rel_end = relocs + sec->reloc_count;
9001 for (rel = relocs; rel < rel_end; rel++)
9002 {
9003 struct elf_link_hash_entry *h;
9004 struct elf32_arm_link_hash_entry *eh;
9005 unsigned long r_symndx;
9006 int r_type;
9007
9008 r_symndx = ELF32_R_SYM (rel->r_info);
9009 r_type = ELF32_R_TYPE (rel->r_info);
9010 r_type = arm_real_reloc_type (htab, r_type);
9011
9012 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
9013 {
9014 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
9015 r_symndx);
9016 return FALSE;
9017 }
9018
9019 if (r_symndx < symtab_hdr->sh_info)
9020 h = NULL;
9021 else
9022 {
9023 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9024 while (h->root.type == bfd_link_hash_indirect
9025 || h->root.type == bfd_link_hash_warning)
9026 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9027 }
9028
9029 eh = (struct elf32_arm_link_hash_entry *) h;
9030
9031 switch (r_type)
9032 {
9033 case R_ARM_GOT32:
9034 case R_ARM_GOT_PREL:
9035 case R_ARM_TLS_GD32:
9036 case R_ARM_TLS_IE32:
9037 /* This symbol requires a global offset table entry. */
9038 {
9039 int tls_type, old_tls_type;
9040
9041 switch (r_type)
9042 {
9043 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
9044 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
9045 default: tls_type = GOT_NORMAL; break;
9046 }
9047
9048 if (h != NULL)
9049 {
9050 h->got.refcount++;
9051 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
9052 }
9053 else
9054 {
9055 bfd_signed_vma *local_got_refcounts;
9056
9057 /* This is a global offset table entry for a local symbol. */
9058 local_got_refcounts = elf_local_got_refcounts (abfd);
9059 if (local_got_refcounts == NULL)
9060 {
9061 bfd_size_type size;
9062
9063 size = symtab_hdr->sh_info;
9064 size *= (sizeof (bfd_signed_vma) + sizeof (char));
9065 local_got_refcounts = bfd_zalloc (abfd, size);
9066 if (local_got_refcounts == NULL)
9067 return FALSE;
9068 elf_local_got_refcounts (abfd) = local_got_refcounts;
9069 elf32_arm_local_got_tls_type (abfd)
9070 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
9071 }
9072 local_got_refcounts[r_symndx] += 1;
9073 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
9074 }
9075
9076 /* We will already have issued an error message if there is a
9077 TLS / non-TLS mismatch, based on the symbol type. We don't
9078 support any linker relaxations. So just combine any TLS
9079 types needed. */
9080 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
9081 && tls_type != GOT_NORMAL)
9082 tls_type |= old_tls_type;
9083
9084 if (old_tls_type != tls_type)
9085 {
9086 if (h != NULL)
9087 elf32_arm_hash_entry (h)->tls_type = tls_type;
9088 else
9089 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
9090 }
9091 }
9092 /* Fall through. */
9093
9094 case R_ARM_TLS_LDM32:
9095 if (r_type == R_ARM_TLS_LDM32)
9096 htab->tls_ldm_got.refcount++;
9097 /* Fall through. */
9098
9099 case R_ARM_GOTOFF32:
9100 case R_ARM_GOTPC:
9101 if (htab->sgot == NULL)
9102 {
9103 if (htab->root.dynobj == NULL)
9104 htab->root.dynobj = abfd;
9105 if (!create_got_section (htab->root.dynobj, info))
9106 return FALSE;
9107 }
9108 break;
9109
9110 case R_ARM_ABS12:
9111 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9112 ldr __GOTT_INDEX__ offsets. */
9113 if (!htab->vxworks_p)
9114 break;
9115 /* Fall through. */
9116
9117 case R_ARM_PC24:
9118 case R_ARM_PLT32:
9119 case R_ARM_CALL:
9120 case R_ARM_JUMP24:
9121 case R_ARM_PREL31:
9122 case R_ARM_THM_CALL:
9123 case R_ARM_THM_JUMP24:
9124 case R_ARM_THM_JUMP19:
9125 needs_plt = 1;
9126 goto normal_reloc;
9127
9128 case R_ARM_ABS32:
9129 case R_ARM_ABS32_NOI:
9130 case R_ARM_REL32:
9131 case R_ARM_REL32_NOI:
9132 case R_ARM_MOVW_ABS_NC:
9133 case R_ARM_MOVT_ABS:
9134 case R_ARM_MOVW_PREL_NC:
9135 case R_ARM_MOVT_PREL:
9136 case R_ARM_THM_MOVW_ABS_NC:
9137 case R_ARM_THM_MOVT_ABS:
9138 case R_ARM_THM_MOVW_PREL_NC:
9139 case R_ARM_THM_MOVT_PREL:
9140 needs_plt = 0;
9141 normal_reloc:
9142
9143 /* Should the interworking branches be listed here? */
9144 if (h != NULL)
9145 {
9146 /* If this reloc is in a read-only section, we might
9147 need a copy reloc. We can't check reliably at this
9148 stage whether the section is read-only, as input
9149 sections have not yet been mapped to output sections.
9150 Tentatively set the flag for now, and correct in
9151 adjust_dynamic_symbol. */
9152 if (!info->shared)
9153 h->non_got_ref = 1;
9154
9155 /* We may need a .plt entry if the function this reloc
9156 refers to is in a different object. We can't tell for
9157 sure yet, because something later might force the
9158 symbol local. */
9159 if (needs_plt)
9160 h->needs_plt = 1;
9161
9162 /* If we create a PLT entry, this relocation will reference
9163 it, even if it's an ABS32 relocation. */
9164 h->plt.refcount += 1;
9165
9166 /* It's too early to use htab->use_blx here, so we have to
9167 record possible blx references separately from
9168 relocs that definitely need a thumb stub. */
9169
9170 if (r_type == R_ARM_THM_CALL)
9171 eh->plt_maybe_thumb_refcount += 1;
9172
9173 if (r_type == R_ARM_THM_JUMP24
9174 || r_type == R_ARM_THM_JUMP19)
9175 eh->plt_thumb_refcount += 1;
9176 }
9177
9178 /* If we are creating a shared library or relocatable executable,
9179 and this is a reloc against a global symbol, or a non PC
9180 relative reloc against a local symbol, then we need to copy
9181 the reloc into the shared library. However, if we are linking
9182 with -Bsymbolic, we do not need to copy a reloc against a
9183 global symbol which is defined in an object we are
9184 including in the link (i.e., DEF_REGULAR is set). At
9185 this point we have not seen all the input files, so it is
9186 possible that DEF_REGULAR is not set now but will be set
9187 later (it is never cleared). We account for that
9188 possibility below by storing information in the
9189 relocs_copied field of the hash table entry. */
9190 if ((info->shared || htab->root.is_relocatable_executable)
9191 && (sec->flags & SEC_ALLOC) != 0
9192 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
9193 || (h != NULL && ! h->needs_plt
9194 && (! info->symbolic || ! h->def_regular))))
9195 {
9196 struct elf32_arm_relocs_copied *p, **head;
9197
9198 /* When creating a shared object, we must copy these
9199 reloc types into the output file. We create a reloc
9200 section in dynobj and make room for this reloc. */
9201 if (sreloc == NULL)
9202 {
9203 const char * name;
9204
9205 name = (bfd_elf_string_from_elf_section
9206 (abfd,
9207 elf_elfheader (abfd)->e_shstrndx,
9208 elf_section_data (sec)->rel_hdr.sh_name));
9209 if (name == NULL)
9210 return FALSE;
9211
9212 BFD_ASSERT (reloc_section_p (htab, name, sec));
9213
9214 sreloc = bfd_get_section_by_name (dynobj, name);
9215 if (sreloc == NULL)
9216 {
9217 flagword flags;
9218
9219 flags = (SEC_HAS_CONTENTS | SEC_READONLY
9220 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
9221 if ((sec->flags & SEC_ALLOC) != 0
9222 /* BPABI objects never have dynamic
9223 relocations mapped. */
9224 && !htab->symbian_p)
9225 flags |= SEC_ALLOC | SEC_LOAD;
9226 sreloc = bfd_make_section_with_flags (dynobj,
9227 name,
9228 flags);
9229 if (sreloc == NULL
9230 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
9231 return FALSE;
9232 }
9233
9234 elf_section_data (sec)->sreloc = sreloc;
9235 }
9236
9237 /* If this is a global symbol, we count the number of
9238 relocations we need for this symbol. */
9239 if (h != NULL)
9240 {
9241 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
9242 }
9243 else
9244 {
9245 /* Track dynamic relocs needed for local syms too.
9246 We really need local syms available to do this
9247 easily. Oh well. */
9248
9249 asection *s;
9250 void *vpp;
9251
9252 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
9253 sec, r_symndx);
9254 if (s == NULL)
9255 return FALSE;
9256
9257 vpp = &elf_section_data (s)->local_dynrel;
9258 head = (struct elf32_arm_relocs_copied **) vpp;
9259 }
9260
9261 p = *head;
9262 if (p == NULL || p->section != sec)
9263 {
9264 bfd_size_type amt = sizeof *p;
9265
9266 p = bfd_alloc (htab->root.dynobj, amt);
9267 if (p == NULL)
9268 return FALSE;
9269 p->next = *head;
9270 *head = p;
9271 p->section = sec;
9272 p->count = 0;
9273 p->pc_count = 0;
9274 }
9275
9276 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
9277 p->pc_count += 1;
9278 p->count += 1;
9279 }
9280 break;
9281
9282 /* This relocation describes the C++ object vtable hierarchy.
9283 Reconstruct it for later use during GC. */
9284 case R_ARM_GNU_VTINHERIT:
9285 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
9286 return FALSE;
9287 break;
9288
9289 /* This relocation describes which C++ vtable entries are actually
9290 used. Record for later use during GC. */
9291 case R_ARM_GNU_VTENTRY:
9292 BFD_ASSERT (h != NULL);
9293 if (h != NULL
9294 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
9295 return FALSE;
9296 break;
9297 }
9298 }
9299
9300 return TRUE;
9301 }
9302
9303 /* Unwinding tables are not referenced directly. This pass marks them as
9304 required if the corresponding code section is marked. */
9305
9306 static bfd_boolean
9307 elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info,
9308 elf_gc_mark_hook_fn gc_mark_hook)
9309 {
9310 bfd *sub;
9311 Elf_Internal_Shdr **elf_shdrp;
9312 bfd_boolean again;
9313
9314 /* Marking EH data may cause additional code sections to be marked,
9315 requiring multiple passes. */
9316 again = TRUE;
9317 while (again)
9318 {
9319 again = FALSE;
9320 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
9321 {
9322 asection *o;
9323
9324 if (! is_arm_elf (sub))
9325 continue;
9326
9327 elf_shdrp = elf_elfsections (sub);
9328 for (o = sub->sections; o != NULL; o = o->next)
9329 {
9330 Elf_Internal_Shdr *hdr;
9331
9332 hdr = &elf_section_data (o)->this_hdr;
9333 if (hdr->sh_type == SHT_ARM_EXIDX
9334 && hdr->sh_link
9335 && hdr->sh_link < elf_numsections (sub)
9336 && !o->gc_mark
9337 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
9338 {
9339 again = TRUE;
9340 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
9341 return FALSE;
9342 }
9343 }
9344 }
9345 }
9346
9347 return TRUE;
9348 }
9349
9350 /* Treat mapping symbols as special target symbols. */
9351
9352 static bfd_boolean
9353 elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
9354 {
9355 return bfd_is_arm_special_symbol_name (sym->name,
9356 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
9357 }
9358
9359 /* This is a copy of elf_find_function() from elf.c except that
9360 ARM mapping symbols are ignored when looking for function names
9361 and STT_ARM_TFUNC is considered to a function type. */
9362
9363 static bfd_boolean
9364 arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
9365 asection * section,
9366 asymbol ** symbols,
9367 bfd_vma offset,
9368 const char ** filename_ptr,
9369 const char ** functionname_ptr)
9370 {
9371 const char * filename = NULL;
9372 asymbol * func = NULL;
9373 bfd_vma low_func = 0;
9374 asymbol ** p;
9375
9376 for (p = symbols; *p != NULL; p++)
9377 {
9378 elf_symbol_type *q;
9379
9380 q = (elf_symbol_type *) *p;
9381
9382 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
9383 {
9384 default:
9385 break;
9386 case STT_FILE:
9387 filename = bfd_asymbol_name (&q->symbol);
9388 break;
9389 case STT_FUNC:
9390 case STT_ARM_TFUNC:
9391 case STT_NOTYPE:
9392 /* Skip mapping symbols. */
9393 if ((q->symbol.flags & BSF_LOCAL)
9394 && bfd_is_arm_special_symbol_name (q->symbol.name,
9395 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
9396 continue;
9397 /* Fall through. */
9398 if (bfd_get_section (&q->symbol) == section
9399 && q->symbol.value >= low_func
9400 && q->symbol.value <= offset)
9401 {
9402 func = (asymbol *) q;
9403 low_func = q->symbol.value;
9404 }
9405 break;
9406 }
9407 }
9408
9409 if (func == NULL)
9410 return FALSE;
9411
9412 if (filename_ptr)
9413 *filename_ptr = filename;
9414 if (functionname_ptr)
9415 *functionname_ptr = bfd_asymbol_name (func);
9416
9417 return TRUE;
9418 }
9419
9420
9421 /* Find the nearest line to a particular section and offset, for error
9422 reporting. This code is a duplicate of the code in elf.c, except
9423 that it uses arm_elf_find_function. */
9424
9425 static bfd_boolean
9426 elf32_arm_find_nearest_line (bfd * abfd,
9427 asection * section,
9428 asymbol ** symbols,
9429 bfd_vma offset,
9430 const char ** filename_ptr,
9431 const char ** functionname_ptr,
9432 unsigned int * line_ptr)
9433 {
9434 bfd_boolean found = FALSE;
9435
9436 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
9437
9438 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
9439 filename_ptr, functionname_ptr,
9440 line_ptr, 0,
9441 & elf_tdata (abfd)->dwarf2_find_line_info))
9442 {
9443 if (!*functionname_ptr)
9444 arm_elf_find_function (abfd, section, symbols, offset,
9445 *filename_ptr ? NULL : filename_ptr,
9446 functionname_ptr);
9447
9448 return TRUE;
9449 }
9450
9451 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
9452 & found, filename_ptr,
9453 functionname_ptr, line_ptr,
9454 & elf_tdata (abfd)->line_info))
9455 return FALSE;
9456
9457 if (found && (*functionname_ptr || *line_ptr))
9458 return TRUE;
9459
9460 if (symbols == NULL)
9461 return FALSE;
9462
9463 if (! arm_elf_find_function (abfd, section, symbols, offset,
9464 filename_ptr, functionname_ptr))
9465 return FALSE;
9466
9467 *line_ptr = 0;
9468 return TRUE;
9469 }
9470
9471 static bfd_boolean
9472 elf32_arm_find_inliner_info (bfd * abfd,
9473 const char ** filename_ptr,
9474 const char ** functionname_ptr,
9475 unsigned int * line_ptr)
9476 {
9477 bfd_boolean found;
9478 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
9479 functionname_ptr, line_ptr,
9480 & elf_tdata (abfd)->dwarf2_find_line_info);
9481 return found;
9482 }
9483
9484 /* Adjust a symbol defined by a dynamic object and referenced by a
9485 regular object. The current definition is in some section of the
9486 dynamic object, but we're not including those sections. We have to
9487 change the definition to something the rest of the link can
9488 understand. */
9489
9490 static bfd_boolean
9491 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
9492 struct elf_link_hash_entry * h)
9493 {
9494 bfd * dynobj;
9495 asection * s;
9496 struct elf32_arm_link_hash_entry * eh;
9497 struct elf32_arm_link_hash_table *globals;
9498
9499 globals = elf32_arm_hash_table (info);
9500 dynobj = elf_hash_table (info)->dynobj;
9501
9502 /* Make sure we know what is going on here. */
9503 BFD_ASSERT (dynobj != NULL
9504 && (h->needs_plt
9505 || h->u.weakdef != NULL
9506 || (h->def_dynamic
9507 && h->ref_regular
9508 && !h->def_regular)));
9509
9510 eh = (struct elf32_arm_link_hash_entry *) h;
9511
9512 /* If this is a function, put it in the procedure linkage table. We
9513 will fill in the contents of the procedure linkage table later,
9514 when we know the address of the .got section. */
9515 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
9516 || h->needs_plt)
9517 {
9518 if (h->plt.refcount <= 0
9519 || SYMBOL_CALLS_LOCAL (info, h)
9520 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
9521 && h->root.type == bfd_link_hash_undefweak))
9522 {
9523 /* This case can occur if we saw a PLT32 reloc in an input
9524 file, but the symbol was never referred to by a dynamic
9525 object, or if all references were garbage collected. In
9526 such a case, we don't actually need to build a procedure
9527 linkage table, and we can just do a PC24 reloc instead. */
9528 h->plt.offset = (bfd_vma) -1;
9529 eh->plt_thumb_refcount = 0;
9530 eh->plt_maybe_thumb_refcount = 0;
9531 h->needs_plt = 0;
9532 }
9533
9534 return TRUE;
9535 }
9536 else
9537 {
9538 /* It's possible that we incorrectly decided a .plt reloc was
9539 needed for an R_ARM_PC24 or similar reloc to a non-function sym
9540 in check_relocs. We can't decide accurately between function
9541 and non-function syms in check-relocs; Objects loaded later in
9542 the link may change h->type. So fix it now. */
9543 h->plt.offset = (bfd_vma) -1;
9544 eh->plt_thumb_refcount = 0;
9545 eh->plt_maybe_thumb_refcount = 0;
9546 }
9547
9548 /* If this is a weak symbol, and there is a real definition, the
9549 processor independent code will have arranged for us to see the
9550 real definition first, and we can just use the same value. */
9551 if (h->u.weakdef != NULL)
9552 {
9553 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
9554 || h->u.weakdef->root.type == bfd_link_hash_defweak);
9555 h->root.u.def.section = h->u.weakdef->root.u.def.section;
9556 h->root.u.def.value = h->u.weakdef->root.u.def.value;
9557 return TRUE;
9558 }
9559
9560 /* If there are no non-GOT references, we do not need a copy
9561 relocation. */
9562 if (!h->non_got_ref)
9563 return TRUE;
9564
9565 /* This is a reference to a symbol defined by a dynamic object which
9566 is not a function. */
9567
9568 /* If we are creating a shared library, we must presume that the
9569 only references to the symbol are via the global offset table.
9570 For such cases we need not do anything here; the relocations will
9571 be handled correctly by relocate_section. Relocatable executables
9572 can reference data in shared objects directly, so we don't need to
9573 do anything here. */
9574 if (info->shared || globals->root.is_relocatable_executable)
9575 return TRUE;
9576
9577 if (h->size == 0)
9578 {
9579 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
9580 h->root.root.string);
9581 return TRUE;
9582 }
9583
9584 /* We must allocate the symbol in our .dynbss section, which will
9585 become part of the .bss section of the executable. There will be
9586 an entry for this symbol in the .dynsym section. The dynamic
9587 object will contain position independent code, so all references
9588 from the dynamic object to this symbol will go through the global
9589 offset table. The dynamic linker will use the .dynsym entry to
9590 determine the address it must put in the global offset table, so
9591 both the dynamic object and the regular object will refer to the
9592 same memory location for the variable. */
9593 s = bfd_get_section_by_name (dynobj, ".dynbss");
9594 BFD_ASSERT (s != NULL);
9595
9596 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
9597 copy the initial value out of the dynamic object and into the
9598 runtime process image. We need to remember the offset into the
9599 .rel(a).bss section we are going to use. */
9600 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
9601 {
9602 asection *srel;
9603
9604 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
9605 BFD_ASSERT (srel != NULL);
9606 srel->size += RELOC_SIZE (globals);
9607 h->needs_copy = 1;
9608 }
9609
9610 return _bfd_elf_adjust_dynamic_copy (h, s);
9611 }
9612
9613 /* Allocate space in .plt, .got and associated reloc sections for
9614 dynamic relocs. */
9615
9616 static bfd_boolean
9617 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
9618 {
9619 struct bfd_link_info *info;
9620 struct elf32_arm_link_hash_table *htab;
9621 struct elf32_arm_link_hash_entry *eh;
9622 struct elf32_arm_relocs_copied *p;
9623 bfd_signed_vma thumb_refs;
9624
9625 eh = (struct elf32_arm_link_hash_entry *) h;
9626
9627 if (h->root.type == bfd_link_hash_indirect)
9628 return TRUE;
9629
9630 if (h->root.type == bfd_link_hash_warning)
9631 /* When warning symbols are created, they **replace** the "real"
9632 entry in the hash table, thus we never get to see the real
9633 symbol in a hash traversal. So look at it now. */
9634 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9635
9636 info = (struct bfd_link_info *) inf;
9637 htab = elf32_arm_hash_table (info);
9638
9639 if (htab->root.dynamic_sections_created
9640 && h->plt.refcount > 0)
9641 {
9642 /* Make sure this symbol is output as a dynamic symbol.
9643 Undefined weak syms won't yet be marked as dynamic. */
9644 if (h->dynindx == -1
9645 && !h->forced_local)
9646 {
9647 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9648 return FALSE;
9649 }
9650
9651 if (info->shared
9652 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
9653 {
9654 asection *s = htab->splt;
9655
9656 /* If this is the first .plt entry, make room for the special
9657 first entry. */
9658 if (s->size == 0)
9659 s->size += htab->plt_header_size;
9660
9661 h->plt.offset = s->size;
9662
9663 /* If we will insert a Thumb trampoline before this PLT, leave room
9664 for it. */
9665 thumb_refs = eh->plt_thumb_refcount;
9666 if (!htab->use_blx)
9667 thumb_refs += eh->plt_maybe_thumb_refcount;
9668
9669 if (thumb_refs > 0)
9670 {
9671 h->plt.offset += PLT_THUMB_STUB_SIZE;
9672 s->size += PLT_THUMB_STUB_SIZE;
9673 }
9674
9675 /* If this symbol is not defined in a regular file, and we are
9676 not generating a shared library, then set the symbol to this
9677 location in the .plt. This is required to make function
9678 pointers compare as equal between the normal executable and
9679 the shared library. */
9680 if (! info->shared
9681 && !h->def_regular)
9682 {
9683 h->root.u.def.section = s;
9684 h->root.u.def.value = h->plt.offset;
9685
9686 /* Make sure the function is not marked as Thumb, in case
9687 it is the target of an ABS32 relocation, which will
9688 point to the PLT entry. */
9689 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
9690 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
9691 }
9692
9693 /* Make room for this entry. */
9694 s->size += htab->plt_entry_size;
9695
9696 if (!htab->symbian_p)
9697 {
9698 /* We also need to make an entry in the .got.plt section, which
9699 will be placed in the .got section by the linker script. */
9700 eh->plt_got_offset = htab->sgotplt->size;
9701 htab->sgotplt->size += 4;
9702 }
9703
9704 /* We also need to make an entry in the .rel(a).plt section. */
9705 htab->srelplt->size += RELOC_SIZE (htab);
9706
9707 /* VxWorks executables have a second set of relocations for
9708 each PLT entry. They go in a separate relocation section,
9709 which is processed by the kernel loader. */
9710 if (htab->vxworks_p && !info->shared)
9711 {
9712 /* There is a relocation for the initial PLT entry:
9713 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
9714 if (h->plt.offset == htab->plt_header_size)
9715 htab->srelplt2->size += RELOC_SIZE (htab);
9716
9717 /* There are two extra relocations for each subsequent
9718 PLT entry: an R_ARM_32 relocation for the GOT entry,
9719 and an R_ARM_32 relocation for the PLT entry. */
9720 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
9721 }
9722 }
9723 else
9724 {
9725 h->plt.offset = (bfd_vma) -1;
9726 h->needs_plt = 0;
9727 }
9728 }
9729 else
9730 {
9731 h->plt.offset = (bfd_vma) -1;
9732 h->needs_plt = 0;
9733 }
9734
9735 if (h->got.refcount > 0)
9736 {
9737 asection *s;
9738 bfd_boolean dyn;
9739 int tls_type = elf32_arm_hash_entry (h)->tls_type;
9740 int indx;
9741
9742 /* Make sure this symbol is output as a dynamic symbol.
9743 Undefined weak syms won't yet be marked as dynamic. */
9744 if (h->dynindx == -1
9745 && !h->forced_local)
9746 {
9747 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9748 return FALSE;
9749 }
9750
9751 if (!htab->symbian_p)
9752 {
9753 s = htab->sgot;
9754 h->got.offset = s->size;
9755
9756 if (tls_type == GOT_UNKNOWN)
9757 abort ();
9758
9759 if (tls_type == GOT_NORMAL)
9760 /* Non-TLS symbols need one GOT slot. */
9761 s->size += 4;
9762 else
9763 {
9764 if (tls_type & GOT_TLS_GD)
9765 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
9766 s->size += 8;
9767 if (tls_type & GOT_TLS_IE)
9768 /* R_ARM_TLS_IE32 needs one GOT slot. */
9769 s->size += 4;
9770 }
9771
9772 dyn = htab->root.dynamic_sections_created;
9773
9774 indx = 0;
9775 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
9776 && (!info->shared
9777 || !SYMBOL_REFERENCES_LOCAL (info, h)))
9778 indx = h->dynindx;
9779
9780 if (tls_type != GOT_NORMAL
9781 && (info->shared || indx != 0)
9782 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9783 || h->root.type != bfd_link_hash_undefweak))
9784 {
9785 if (tls_type & GOT_TLS_IE)
9786 htab->srelgot->size += RELOC_SIZE (htab);
9787
9788 if (tls_type & GOT_TLS_GD)
9789 htab->srelgot->size += RELOC_SIZE (htab);
9790
9791 if ((tls_type & GOT_TLS_GD) && indx != 0)
9792 htab->srelgot->size += RELOC_SIZE (htab);
9793 }
9794 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9795 || h->root.type != bfd_link_hash_undefweak)
9796 && (info->shared
9797 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
9798 htab->srelgot->size += RELOC_SIZE (htab);
9799 }
9800 }
9801 else
9802 h->got.offset = (bfd_vma) -1;
9803
9804 /* Allocate stubs for exported Thumb functions on v4t. */
9805 if (!htab->use_blx && h->dynindx != -1
9806 && h->def_regular
9807 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
9808 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9809 {
9810 struct elf_link_hash_entry * th;
9811 struct bfd_link_hash_entry * bh;
9812 struct elf_link_hash_entry * myh;
9813 char name[1024];
9814 asection *s;
9815 bh = NULL;
9816 /* Create a new symbol to regist the real location of the function. */
9817 s = h->root.u.def.section;
9818 sprintf (name, "__real_%s", h->root.root.string);
9819 _bfd_generic_link_add_one_symbol (info, s->owner,
9820 name, BSF_GLOBAL, s,
9821 h->root.u.def.value,
9822 NULL, TRUE, FALSE, &bh);
9823
9824 myh = (struct elf_link_hash_entry *) bh;
9825 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
9826 myh->forced_local = 1;
9827 eh->export_glue = myh;
9828 th = record_arm_to_thumb_glue (info, h);
9829 /* Point the symbol at the stub. */
9830 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
9831 h->root.u.def.section = th->root.u.def.section;
9832 h->root.u.def.value = th->root.u.def.value & ~1;
9833 }
9834
9835 if (eh->relocs_copied == NULL)
9836 return TRUE;
9837
9838 /* In the shared -Bsymbolic case, discard space allocated for
9839 dynamic pc-relative relocs against symbols which turn out to be
9840 defined in regular objects. For the normal shared case, discard
9841 space for pc-relative relocs that have become local due to symbol
9842 visibility changes. */
9843
9844 if (info->shared || htab->root.is_relocatable_executable)
9845 {
9846 /* The only relocs that use pc_count are R_ARM_REL32 and
9847 R_ARM_REL32_NOI, which will appear on something like
9848 ".long foo - .". We want calls to protected symbols to resolve
9849 directly to the function rather than going via the plt. If people
9850 want function pointer comparisons to work as expected then they
9851 should avoid writing assembly like ".long foo - .". */
9852 if (SYMBOL_CALLS_LOCAL (info, h))
9853 {
9854 struct elf32_arm_relocs_copied **pp;
9855
9856 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
9857 {
9858 p->count -= p->pc_count;
9859 p->pc_count = 0;
9860 if (p->count == 0)
9861 *pp = p->next;
9862 else
9863 pp = &p->next;
9864 }
9865 }
9866
9867 if (elf32_arm_hash_table (info)->vxworks_p)
9868 {
9869 struct elf32_arm_relocs_copied **pp;
9870
9871 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
9872 {
9873 if (strcmp (p->section->output_section->name, ".tls_vars") == 0)
9874 *pp = p->next;
9875 else
9876 pp = &p->next;
9877 }
9878 }
9879
9880 /* Also discard relocs on undefined weak syms with non-default
9881 visibility. */
9882 if (eh->relocs_copied != NULL
9883 && h->root.type == bfd_link_hash_undefweak)
9884 {
9885 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9886 eh->relocs_copied = NULL;
9887
9888 /* Make sure undefined weak symbols are output as a dynamic
9889 symbol in PIEs. */
9890 else if (h->dynindx == -1
9891 && !h->forced_local)
9892 {
9893 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9894 return FALSE;
9895 }
9896 }
9897
9898 else if (htab->root.is_relocatable_executable && h->dynindx == -1
9899 && h->root.type == bfd_link_hash_new)
9900 {
9901 /* Output absolute symbols so that we can create relocations
9902 against them. For normal symbols we output a relocation
9903 against the section that contains them. */
9904 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9905 return FALSE;
9906 }
9907
9908 }
9909 else
9910 {
9911 /* For the non-shared case, discard space for relocs against
9912 symbols which turn out to need copy relocs or are not
9913 dynamic. */
9914
9915 if (!h->non_got_ref
9916 && ((h->def_dynamic
9917 && !h->def_regular)
9918 || (htab->root.dynamic_sections_created
9919 && (h->root.type == bfd_link_hash_undefweak
9920 || h->root.type == bfd_link_hash_undefined))))
9921 {
9922 /* Make sure this symbol is output as a dynamic symbol.
9923 Undefined weak syms won't yet be marked as dynamic. */
9924 if (h->dynindx == -1
9925 && !h->forced_local)
9926 {
9927 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9928 return FALSE;
9929 }
9930
9931 /* If that succeeded, we know we'll be keeping all the
9932 relocs. */
9933 if (h->dynindx != -1)
9934 goto keep;
9935 }
9936
9937 eh->relocs_copied = NULL;
9938
9939 keep: ;
9940 }
9941
9942 /* Finally, allocate space. */
9943 for (p = eh->relocs_copied; p != NULL; p = p->next)
9944 {
9945 asection *sreloc = elf_section_data (p->section)->sreloc;
9946 sreloc->size += p->count * RELOC_SIZE (htab);
9947 }
9948
9949 return TRUE;
9950 }
9951
9952 /* Find any dynamic relocs that apply to read-only sections. */
9953
9954 static bfd_boolean
9955 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
9956 {
9957 struct elf32_arm_link_hash_entry * eh;
9958 struct elf32_arm_relocs_copied * p;
9959
9960 if (h->root.type == bfd_link_hash_warning)
9961 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9962
9963 eh = (struct elf32_arm_link_hash_entry *) h;
9964 for (p = eh->relocs_copied; p != NULL; p = p->next)
9965 {
9966 asection *s = p->section;
9967
9968 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9969 {
9970 struct bfd_link_info *info = (struct bfd_link_info *) inf;
9971
9972 if (info->warn_shared_textrel)
9973 (*_bfd_error_handler)
9974 (_("warning: dynamic relocation in readonly section `%s'"),
9975 h->root.root.string);
9976 info->flags |= DF_TEXTREL;
9977
9978 /* Not an error, just cut short the traversal. */
9979 return FALSE;
9980 }
9981 }
9982 return TRUE;
9983 }
9984
9985 void
9986 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
9987 int byteswap_code)
9988 {
9989 struct elf32_arm_link_hash_table *globals;
9990
9991 globals = elf32_arm_hash_table (info);
9992 globals->byteswap_code = byteswap_code;
9993 }
9994
9995 /* Set the sizes of the dynamic sections. */
9996
9997 static bfd_boolean
9998 elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
9999 struct bfd_link_info * info)
10000 {
10001 bfd * dynobj;
10002 asection * s;
10003 bfd_boolean plt;
10004 bfd_boolean relocs;
10005 bfd *ibfd;
10006 struct elf32_arm_link_hash_table *htab;
10007
10008 htab = elf32_arm_hash_table (info);
10009 dynobj = elf_hash_table (info)->dynobj;
10010 BFD_ASSERT (dynobj != NULL);
10011 check_use_blx (htab);
10012
10013 if (elf_hash_table (info)->dynamic_sections_created)
10014 {
10015 /* Set the contents of the .interp section to the interpreter. */
10016 if (info->executable)
10017 {
10018 s = bfd_get_section_by_name (dynobj, ".interp");
10019 BFD_ASSERT (s != NULL);
10020 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10021 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10022 }
10023 }
10024
10025 /* Set up .got offsets for local syms, and space for local dynamic
10026 relocs. */
10027 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10028 {
10029 bfd_signed_vma *local_got;
10030 bfd_signed_vma *end_local_got;
10031 char *local_tls_type;
10032 bfd_size_type locsymcount;
10033 Elf_Internal_Shdr *symtab_hdr;
10034 asection *srel;
10035 bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p;
10036
10037 if (! is_arm_elf (ibfd))
10038 continue;
10039
10040 for (s = ibfd->sections; s != NULL; s = s->next)
10041 {
10042 struct elf32_arm_relocs_copied *p;
10043
10044 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10045 {
10046 if (!bfd_is_abs_section (p->section)
10047 && bfd_is_abs_section (p->section->output_section))
10048 {
10049 /* Input section has been discarded, either because
10050 it is a copy of a linkonce section or due to
10051 linker script /DISCARD/, so we'll be discarding
10052 the relocs too. */
10053 }
10054 else if (is_vxworks
10055 && strcmp (p->section->output_section->name,
10056 ".tls_vars") == 0)
10057 {
10058 /* Relocations in vxworks .tls_vars sections are
10059 handled specially by the loader. */
10060 }
10061 else if (p->count != 0)
10062 {
10063 srel = elf_section_data (p->section)->sreloc;
10064 srel->size += p->count * RELOC_SIZE (htab);
10065 if ((p->section->output_section->flags & SEC_READONLY) != 0)
10066 info->flags |= DF_TEXTREL;
10067 }
10068 }
10069 }
10070
10071 local_got = elf_local_got_refcounts (ibfd);
10072 if (!local_got)
10073 continue;
10074
10075 symtab_hdr = & elf_symtab_hdr (ibfd);
10076 locsymcount = symtab_hdr->sh_info;
10077 end_local_got = local_got + locsymcount;
10078 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
10079 s = htab->sgot;
10080 srel = htab->srelgot;
10081 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
10082 {
10083 if (*local_got > 0)
10084 {
10085 *local_got = s->size;
10086 if (*local_tls_type & GOT_TLS_GD)
10087 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10088 s->size += 8;
10089 if (*local_tls_type & GOT_TLS_IE)
10090 s->size += 4;
10091 if (*local_tls_type == GOT_NORMAL)
10092 s->size += 4;
10093
10094 if (info->shared || *local_tls_type == GOT_TLS_GD)
10095 srel->size += RELOC_SIZE (htab);
10096 }
10097 else
10098 *local_got = (bfd_vma) -1;
10099 }
10100 }
10101
10102 if (htab->tls_ldm_got.refcount > 0)
10103 {
10104 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10105 for R_ARM_TLS_LDM32 relocations. */
10106 htab->tls_ldm_got.offset = htab->sgot->size;
10107 htab->sgot->size += 8;
10108 if (info->shared)
10109 htab->srelgot->size += RELOC_SIZE (htab);
10110 }
10111 else
10112 htab->tls_ldm_got.offset = -1;
10113
10114 /* Allocate global sym .plt and .got entries, and space for global
10115 sym dynamic relocs. */
10116 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
10117
10118 /* Here we rummage through the found bfds to collect glue information. */
10119 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10120 {
10121 if (! is_arm_elf (ibfd))
10122 continue;
10123
10124 /* Initialise mapping tables for code/data. */
10125 bfd_elf32_arm_init_maps (ibfd);
10126
10127 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
10128 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
10129 /* xgettext:c-format */
10130 _bfd_error_handler (_("Errors encountered processing file %s"),
10131 ibfd->filename);
10132 }
10133
10134 /* The check_relocs and adjust_dynamic_symbol entry points have
10135 determined the sizes of the various dynamic sections. Allocate
10136 memory for them. */
10137 plt = FALSE;
10138 relocs = FALSE;
10139 for (s = dynobj->sections; s != NULL; s = s->next)
10140 {
10141 const char * name;
10142
10143 if ((s->flags & SEC_LINKER_CREATED) == 0)
10144 continue;
10145
10146 /* It's OK to base decisions on the section name, because none
10147 of the dynobj section names depend upon the input files. */
10148 name = bfd_get_section_name (dynobj, s);
10149
10150 if (strcmp (name, ".plt") == 0)
10151 {
10152 /* Remember whether there is a PLT. */
10153 plt = s->size != 0;
10154 }
10155 else if (CONST_STRNEQ (name, ".rel"))
10156 {
10157 if (s->size != 0)
10158 {
10159 /* Remember whether there are any reloc sections other
10160 than .rel(a).plt and .rela.plt.unloaded. */
10161 if (s != htab->srelplt && s != htab->srelplt2)
10162 relocs = TRUE;
10163
10164 /* We use the reloc_count field as a counter if we need
10165 to copy relocs into the output file. */
10166 s->reloc_count = 0;
10167 }
10168 }
10169 else if (! CONST_STRNEQ (name, ".got")
10170 && strcmp (name, ".dynbss") != 0)
10171 {
10172 /* It's not one of our sections, so don't allocate space. */
10173 continue;
10174 }
10175
10176 if (s->size == 0)
10177 {
10178 /* If we don't need this section, strip it from the
10179 output file. This is mostly to handle .rel(a).bss and
10180 .rel(a).plt. We must create both sections in
10181 create_dynamic_sections, because they must be created
10182 before the linker maps input sections to output
10183 sections. The linker does that before
10184 adjust_dynamic_symbol is called, and it is that
10185 function which decides whether anything needs to go
10186 into these sections. */
10187 s->flags |= SEC_EXCLUDE;
10188 continue;
10189 }
10190
10191 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10192 continue;
10193
10194 /* Allocate memory for the section contents. */
10195 s->contents = bfd_zalloc (dynobj, s->size);
10196 if (s->contents == NULL)
10197 return FALSE;
10198 }
10199
10200 if (elf_hash_table (info)->dynamic_sections_created)
10201 {
10202 /* Add some entries to the .dynamic section. We fill in the
10203 values later, in elf32_arm_finish_dynamic_sections, but we
10204 must add the entries now so that we get the correct size for
10205 the .dynamic section. The DT_DEBUG entry is filled in by the
10206 dynamic linker and used by the debugger. */
10207 #define add_dynamic_entry(TAG, VAL) \
10208 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10209
10210 if (info->executable)
10211 {
10212 if (!add_dynamic_entry (DT_DEBUG, 0))
10213 return FALSE;
10214 }
10215
10216 if (plt)
10217 {
10218 if ( !add_dynamic_entry (DT_PLTGOT, 0)
10219 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10220 || !add_dynamic_entry (DT_PLTREL,
10221 htab->use_rel ? DT_REL : DT_RELA)
10222 || !add_dynamic_entry (DT_JMPREL, 0))
10223 return FALSE;
10224 }
10225
10226 if (relocs)
10227 {
10228 if (htab->use_rel)
10229 {
10230 if (!add_dynamic_entry (DT_REL, 0)
10231 || !add_dynamic_entry (DT_RELSZ, 0)
10232 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
10233 return FALSE;
10234 }
10235 else
10236 {
10237 if (!add_dynamic_entry (DT_RELA, 0)
10238 || !add_dynamic_entry (DT_RELASZ, 0)
10239 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
10240 return FALSE;
10241 }
10242 }
10243
10244 /* If any dynamic relocs apply to a read-only section,
10245 then we need a DT_TEXTREL entry. */
10246 if ((info->flags & DF_TEXTREL) == 0)
10247 elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs,
10248 info);
10249
10250 if ((info->flags & DF_TEXTREL) != 0)
10251 {
10252 if (!add_dynamic_entry (DT_TEXTREL, 0))
10253 return FALSE;
10254 }
10255 if (htab->vxworks_p
10256 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
10257 return FALSE;
10258 }
10259 #undef add_dynamic_entry
10260
10261 return TRUE;
10262 }
10263
10264 /* Finish up dynamic symbol handling. We set the contents of various
10265 dynamic sections here. */
10266
10267 static bfd_boolean
10268 elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
10269 struct bfd_link_info * info,
10270 struct elf_link_hash_entry * h,
10271 Elf_Internal_Sym * sym)
10272 {
10273 bfd * dynobj;
10274 struct elf32_arm_link_hash_table *htab;
10275 struct elf32_arm_link_hash_entry *eh;
10276
10277 dynobj = elf_hash_table (info)->dynobj;
10278 htab = elf32_arm_hash_table (info);
10279 eh = (struct elf32_arm_link_hash_entry *) h;
10280
10281 if (h->plt.offset != (bfd_vma) -1)
10282 {
10283 asection * splt;
10284 asection * srel;
10285 bfd_byte *loc;
10286 bfd_vma plt_index;
10287 Elf_Internal_Rela rel;
10288
10289 /* This symbol has an entry in the procedure linkage table. Set
10290 it up. */
10291
10292 BFD_ASSERT (h->dynindx != -1);
10293
10294 splt = bfd_get_section_by_name (dynobj, ".plt");
10295 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
10296 BFD_ASSERT (splt != NULL && srel != NULL);
10297
10298 /* Fill in the entry in the procedure linkage table. */
10299 if (htab->symbian_p)
10300 {
10301 put_arm_insn (htab, output_bfd,
10302 elf32_arm_symbian_plt_entry[0],
10303 splt->contents + h->plt.offset);
10304 bfd_put_32 (output_bfd,
10305 elf32_arm_symbian_plt_entry[1],
10306 splt->contents + h->plt.offset + 4);
10307
10308 /* Fill in the entry in the .rel.plt section. */
10309 rel.r_offset = (splt->output_section->vma
10310 + splt->output_offset
10311 + h->plt.offset + 4);
10312 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
10313
10314 /* Get the index in the procedure linkage table which
10315 corresponds to this symbol. This is the index of this symbol
10316 in all the symbols for which we are making plt entries. The
10317 first entry in the procedure linkage table is reserved. */
10318 plt_index = ((h->plt.offset - htab->plt_header_size)
10319 / htab->plt_entry_size);
10320 }
10321 else
10322 {
10323 bfd_vma got_offset, got_address, plt_address;
10324 bfd_vma got_displacement;
10325 asection * sgot;
10326 bfd_byte * ptr;
10327
10328 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
10329 BFD_ASSERT (sgot != NULL);
10330
10331 /* Get the offset into the .got.plt table of the entry that
10332 corresponds to this function. */
10333 got_offset = eh->plt_got_offset;
10334
10335 /* Get the index in the procedure linkage table which
10336 corresponds to this symbol. This is the index of this symbol
10337 in all the symbols for which we are making plt entries. The
10338 first three entries in .got.plt are reserved; after that
10339 symbols appear in the same order as in .plt. */
10340 plt_index = (got_offset - 12) / 4;
10341
10342 /* Calculate the address of the GOT entry. */
10343 got_address = (sgot->output_section->vma
10344 + sgot->output_offset
10345 + got_offset);
10346
10347 /* ...and the address of the PLT entry. */
10348 plt_address = (splt->output_section->vma
10349 + splt->output_offset
10350 + h->plt.offset);
10351
10352 ptr = htab->splt->contents + h->plt.offset;
10353 if (htab->vxworks_p && info->shared)
10354 {
10355 unsigned int i;
10356 bfd_vma val;
10357
10358 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
10359 {
10360 val = elf32_arm_vxworks_shared_plt_entry[i];
10361 if (i == 2)
10362 val |= got_address - sgot->output_section->vma;
10363 if (i == 5)
10364 val |= plt_index * RELOC_SIZE (htab);
10365 if (i == 2 || i == 5)
10366 bfd_put_32 (output_bfd, val, ptr);
10367 else
10368 put_arm_insn (htab, output_bfd, val, ptr);
10369 }
10370 }
10371 else if (htab->vxworks_p)
10372 {
10373 unsigned int i;
10374 bfd_vma val;
10375
10376 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
10377 {
10378 val = elf32_arm_vxworks_exec_plt_entry[i];
10379 if (i == 2)
10380 val |= got_address;
10381 if (i == 4)
10382 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
10383 if (i == 5)
10384 val |= plt_index * RELOC_SIZE (htab);
10385 if (i == 2 || i == 5)
10386 bfd_put_32 (output_bfd, val, ptr);
10387 else
10388 put_arm_insn (htab, output_bfd, val, ptr);
10389 }
10390
10391 loc = (htab->srelplt2->contents
10392 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
10393
10394 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
10395 referencing the GOT for this PLT entry. */
10396 rel.r_offset = plt_address + 8;
10397 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10398 rel.r_addend = got_offset;
10399 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10400 loc += RELOC_SIZE (htab);
10401
10402 /* Create the R_ARM_ABS32 relocation referencing the
10403 beginning of the PLT for this GOT entry. */
10404 rel.r_offset = got_address;
10405 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
10406 rel.r_addend = 0;
10407 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10408 }
10409 else
10410 {
10411 bfd_signed_vma thumb_refs;
10412 /* Calculate the displacement between the PLT slot and the
10413 entry in the GOT. The eight-byte offset accounts for the
10414 value produced by adding to pc in the first instruction
10415 of the PLT stub. */
10416 got_displacement = got_address - (plt_address + 8);
10417
10418 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
10419
10420 thumb_refs = eh->plt_thumb_refcount;
10421 if (!htab->use_blx)
10422 thumb_refs += eh->plt_maybe_thumb_refcount;
10423
10424 if (thumb_refs > 0)
10425 {
10426 put_thumb_insn (htab, output_bfd,
10427 elf32_arm_plt_thumb_stub[0], ptr - 4);
10428 put_thumb_insn (htab, output_bfd,
10429 elf32_arm_plt_thumb_stub[1], ptr - 2);
10430 }
10431
10432 put_arm_insn (htab, output_bfd,
10433 elf32_arm_plt_entry[0]
10434 | ((got_displacement & 0x0ff00000) >> 20),
10435 ptr + 0);
10436 put_arm_insn (htab, output_bfd,
10437 elf32_arm_plt_entry[1]
10438 | ((got_displacement & 0x000ff000) >> 12),
10439 ptr+ 4);
10440 put_arm_insn (htab, output_bfd,
10441 elf32_arm_plt_entry[2]
10442 | (got_displacement & 0x00000fff),
10443 ptr + 8);
10444 #ifdef FOUR_WORD_PLT
10445 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
10446 #endif
10447 }
10448
10449 /* Fill in the entry in the global offset table. */
10450 bfd_put_32 (output_bfd,
10451 (splt->output_section->vma
10452 + splt->output_offset),
10453 sgot->contents + got_offset);
10454
10455 /* Fill in the entry in the .rel(a).plt section. */
10456 rel.r_addend = 0;
10457 rel.r_offset = got_address;
10458 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
10459 }
10460
10461 loc = srel->contents + plt_index * RELOC_SIZE (htab);
10462 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10463
10464 if (!h->def_regular)
10465 {
10466 /* Mark the symbol as undefined, rather than as defined in
10467 the .plt section. Leave the value alone. */
10468 sym->st_shndx = SHN_UNDEF;
10469 /* If the symbol is weak, we do need to clear the value.
10470 Otherwise, the PLT entry would provide a definition for
10471 the symbol even if the symbol wasn't defined anywhere,
10472 and so the symbol would never be NULL. */
10473 if (!h->ref_regular_nonweak)
10474 sym->st_value = 0;
10475 }
10476 }
10477
10478 if (h->got.offset != (bfd_vma) -1
10479 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
10480 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
10481 {
10482 asection * sgot;
10483 asection * srel;
10484 Elf_Internal_Rela rel;
10485 bfd_byte *loc;
10486 bfd_vma offset;
10487
10488 /* This symbol has an entry in the global offset table. Set it
10489 up. */
10490 sgot = bfd_get_section_by_name (dynobj, ".got");
10491 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
10492 BFD_ASSERT (sgot != NULL && srel != NULL);
10493
10494 offset = (h->got.offset & ~(bfd_vma) 1);
10495 rel.r_addend = 0;
10496 rel.r_offset = (sgot->output_section->vma
10497 + sgot->output_offset
10498 + offset);
10499
10500 /* If this is a static link, or it is a -Bsymbolic link and the
10501 symbol is defined locally or was forced to be local because
10502 of a version file, we just want to emit a RELATIVE reloc.
10503 The entry in the global offset table will already have been
10504 initialized in the relocate_section function. */
10505 if (info->shared
10506 && SYMBOL_REFERENCES_LOCAL (info, h))
10507 {
10508 BFD_ASSERT ((h->got.offset & 1) != 0);
10509 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
10510 if (!htab->use_rel)
10511 {
10512 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
10513 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
10514 }
10515 }
10516 else
10517 {
10518 BFD_ASSERT ((h->got.offset & 1) == 0);
10519 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
10520 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
10521 }
10522
10523 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
10524 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10525 }
10526
10527 if (h->needs_copy)
10528 {
10529 asection * s;
10530 Elf_Internal_Rela rel;
10531 bfd_byte *loc;
10532
10533 /* This symbol needs a copy reloc. Set it up. */
10534 BFD_ASSERT (h->dynindx != -1
10535 && (h->root.type == bfd_link_hash_defined
10536 || h->root.type == bfd_link_hash_defweak));
10537
10538 s = bfd_get_section_by_name (h->root.u.def.section->owner,
10539 RELOC_SECTION (htab, ".bss"));
10540 BFD_ASSERT (s != NULL);
10541
10542 rel.r_addend = 0;
10543 rel.r_offset = (h->root.u.def.value
10544 + h->root.u.def.section->output_section->vma
10545 + h->root.u.def.section->output_offset);
10546 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
10547 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
10548 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10549 }
10550
10551 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
10552 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
10553 to the ".got" section. */
10554 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
10555 || (!htab->vxworks_p && h == htab->root.hgot))
10556 sym->st_shndx = SHN_ABS;
10557
10558 return TRUE;
10559 }
10560
10561 /* Finish up the dynamic sections. */
10562
10563 static bfd_boolean
10564 elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
10565 {
10566 bfd * dynobj;
10567 asection * sgot;
10568 asection * sdyn;
10569
10570 dynobj = elf_hash_table (info)->dynobj;
10571
10572 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
10573 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
10574 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10575
10576 if (elf_hash_table (info)->dynamic_sections_created)
10577 {
10578 asection *splt;
10579 Elf32_External_Dyn *dyncon, *dynconend;
10580 struct elf32_arm_link_hash_table *htab;
10581
10582 htab = elf32_arm_hash_table (info);
10583 splt = bfd_get_section_by_name (dynobj, ".plt");
10584 BFD_ASSERT (splt != NULL && sdyn != NULL);
10585
10586 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10587 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10588
10589 for (; dyncon < dynconend; dyncon++)
10590 {
10591 Elf_Internal_Dyn dyn;
10592 const char * name;
10593 asection * s;
10594
10595 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10596
10597 switch (dyn.d_tag)
10598 {
10599 unsigned int type;
10600
10601 default:
10602 if (htab->vxworks_p
10603 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10604 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10605 break;
10606
10607 case DT_HASH:
10608 name = ".hash";
10609 goto get_vma_if_bpabi;
10610 case DT_STRTAB:
10611 name = ".dynstr";
10612 goto get_vma_if_bpabi;
10613 case DT_SYMTAB:
10614 name = ".dynsym";
10615 goto get_vma_if_bpabi;
10616 case DT_VERSYM:
10617 name = ".gnu.version";
10618 goto get_vma_if_bpabi;
10619 case DT_VERDEF:
10620 name = ".gnu.version_d";
10621 goto get_vma_if_bpabi;
10622 case DT_VERNEED:
10623 name = ".gnu.version_r";
10624 goto get_vma_if_bpabi;
10625
10626 case DT_PLTGOT:
10627 name = ".got";
10628 goto get_vma;
10629 case DT_JMPREL:
10630 name = RELOC_SECTION (htab, ".plt");
10631 get_vma:
10632 s = bfd_get_section_by_name (output_bfd, name);
10633 BFD_ASSERT (s != NULL);
10634 if (!htab->symbian_p)
10635 dyn.d_un.d_ptr = s->vma;
10636 else
10637 /* In the BPABI, tags in the PT_DYNAMIC section point
10638 at the file offset, not the memory address, for the
10639 convenience of the post linker. */
10640 dyn.d_un.d_ptr = s->filepos;
10641 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10642 break;
10643
10644 get_vma_if_bpabi:
10645 if (htab->symbian_p)
10646 goto get_vma;
10647 break;
10648
10649 case DT_PLTRELSZ:
10650 s = bfd_get_section_by_name (output_bfd,
10651 RELOC_SECTION (htab, ".plt"));
10652 BFD_ASSERT (s != NULL);
10653 dyn.d_un.d_val = s->size;
10654 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10655 break;
10656
10657 case DT_RELSZ:
10658 case DT_RELASZ:
10659 if (!htab->symbian_p)
10660 {
10661 /* My reading of the SVR4 ABI indicates that the
10662 procedure linkage table relocs (DT_JMPREL) should be
10663 included in the overall relocs (DT_REL). This is
10664 what Solaris does. However, UnixWare can not handle
10665 that case. Therefore, we override the DT_RELSZ entry
10666 here to make it not include the JMPREL relocs. Since
10667 the linker script arranges for .rel(a).plt to follow all
10668 other relocation sections, we don't have to worry
10669 about changing the DT_REL entry. */
10670 s = bfd_get_section_by_name (output_bfd,
10671 RELOC_SECTION (htab, ".plt"));
10672 if (s != NULL)
10673 dyn.d_un.d_val -= s->size;
10674 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10675 break;
10676 }
10677 /* Fall through. */
10678
10679 case DT_REL:
10680 case DT_RELA:
10681 /* In the BPABI, the DT_REL tag must point at the file
10682 offset, not the VMA, of the first relocation
10683 section. So, we use code similar to that in
10684 elflink.c, but do not check for SHF_ALLOC on the
10685 relcoation section, since relocations sections are
10686 never allocated under the BPABI. The comments above
10687 about Unixware notwithstanding, we include all of the
10688 relocations here. */
10689 if (htab->symbian_p)
10690 {
10691 unsigned int i;
10692 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
10693 ? SHT_REL : SHT_RELA);
10694 dyn.d_un.d_val = 0;
10695 for (i = 1; i < elf_numsections (output_bfd); i++)
10696 {
10697 Elf_Internal_Shdr *hdr
10698 = elf_elfsections (output_bfd)[i];
10699 if (hdr->sh_type == type)
10700 {
10701 if (dyn.d_tag == DT_RELSZ
10702 || dyn.d_tag == DT_RELASZ)
10703 dyn.d_un.d_val += hdr->sh_size;
10704 else if ((ufile_ptr) hdr->sh_offset
10705 <= dyn.d_un.d_val - 1)
10706 dyn.d_un.d_val = hdr->sh_offset;
10707 }
10708 }
10709 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10710 }
10711 break;
10712
10713 /* Set the bottom bit of DT_INIT/FINI if the
10714 corresponding function is Thumb. */
10715 case DT_INIT:
10716 name = info->init_function;
10717 goto get_sym;
10718 case DT_FINI:
10719 name = info->fini_function;
10720 get_sym:
10721 /* If it wasn't set by elf_bfd_final_link
10722 then there is nothing to adjust. */
10723 if (dyn.d_un.d_val != 0)
10724 {
10725 struct elf_link_hash_entry * eh;
10726
10727 eh = elf_link_hash_lookup (elf_hash_table (info), name,
10728 FALSE, FALSE, TRUE);
10729 if (eh != NULL
10730 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
10731 {
10732 dyn.d_un.d_val |= 1;
10733 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10734 }
10735 }
10736 break;
10737 }
10738 }
10739
10740 /* Fill in the first entry in the procedure linkage table. */
10741 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
10742 {
10743 const bfd_vma *plt0_entry;
10744 bfd_vma got_address, plt_address, got_displacement;
10745
10746 /* Calculate the addresses of the GOT and PLT. */
10747 got_address = sgot->output_section->vma + sgot->output_offset;
10748 plt_address = splt->output_section->vma + splt->output_offset;
10749
10750 if (htab->vxworks_p)
10751 {
10752 /* The VxWorks GOT is relocated by the dynamic linker.
10753 Therefore, we must emit relocations rather than simply
10754 computing the values now. */
10755 Elf_Internal_Rela rel;
10756
10757 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
10758 put_arm_insn (htab, output_bfd, plt0_entry[0],
10759 splt->contents + 0);
10760 put_arm_insn (htab, output_bfd, plt0_entry[1],
10761 splt->contents + 4);
10762 put_arm_insn (htab, output_bfd, plt0_entry[2],
10763 splt->contents + 8);
10764 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
10765
10766 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
10767 rel.r_offset = plt_address + 12;
10768 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10769 rel.r_addend = 0;
10770 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
10771 htab->srelplt2->contents);
10772 }
10773 else
10774 {
10775 got_displacement = got_address - (plt_address + 16);
10776
10777 plt0_entry = elf32_arm_plt0_entry;
10778 put_arm_insn (htab, output_bfd, plt0_entry[0],
10779 splt->contents + 0);
10780 put_arm_insn (htab, output_bfd, plt0_entry[1],
10781 splt->contents + 4);
10782 put_arm_insn (htab, output_bfd, plt0_entry[2],
10783 splt->contents + 8);
10784 put_arm_insn (htab, output_bfd, plt0_entry[3],
10785 splt->contents + 12);
10786
10787 #ifdef FOUR_WORD_PLT
10788 /* The displacement value goes in the otherwise-unused
10789 last word of the second entry. */
10790 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
10791 #else
10792 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
10793 #endif
10794 }
10795 }
10796
10797 /* UnixWare sets the entsize of .plt to 4, although that doesn't
10798 really seem like the right value. */
10799 if (splt->output_section->owner == output_bfd)
10800 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
10801
10802 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
10803 {
10804 /* Correct the .rel(a).plt.unloaded relocations. They will have
10805 incorrect symbol indexes. */
10806 int num_plts;
10807 unsigned char *p;
10808
10809 num_plts = ((htab->splt->size - htab->plt_header_size)
10810 / htab->plt_entry_size);
10811 p = htab->srelplt2->contents + RELOC_SIZE (htab);
10812
10813 for (; num_plts; num_plts--)
10814 {
10815 Elf_Internal_Rela rel;
10816
10817 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
10818 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10819 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
10820 p += RELOC_SIZE (htab);
10821
10822 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
10823 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
10824 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
10825 p += RELOC_SIZE (htab);
10826 }
10827 }
10828 }
10829
10830 /* Fill in the first three entries in the global offset table. */
10831 if (sgot)
10832 {
10833 if (sgot->size > 0)
10834 {
10835 if (sdyn == NULL)
10836 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
10837 else
10838 bfd_put_32 (output_bfd,
10839 sdyn->output_section->vma + sdyn->output_offset,
10840 sgot->contents);
10841 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
10842 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
10843 }
10844
10845 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
10846 }
10847
10848 return TRUE;
10849 }
10850
10851 static void
10852 elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
10853 {
10854 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
10855 struct elf32_arm_link_hash_table *globals;
10856
10857 i_ehdrp = elf_elfheader (abfd);
10858
10859 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
10860 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
10861 else
10862 i_ehdrp->e_ident[EI_OSABI] = 0;
10863 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
10864
10865 if (link_info)
10866 {
10867 globals = elf32_arm_hash_table (link_info);
10868 if (globals->byteswap_code)
10869 i_ehdrp->e_flags |= EF_ARM_BE8;
10870 }
10871 }
10872
10873 static enum elf_reloc_type_class
10874 elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
10875 {
10876 switch ((int) ELF32_R_TYPE (rela->r_info))
10877 {
10878 case R_ARM_RELATIVE:
10879 return reloc_class_relative;
10880 case R_ARM_JUMP_SLOT:
10881 return reloc_class_plt;
10882 case R_ARM_COPY:
10883 return reloc_class_copy;
10884 default:
10885 return reloc_class_normal;
10886 }
10887 }
10888
10889 /* Set the right machine number for an Arm ELF file. */
10890
10891 static bfd_boolean
10892 elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
10893 {
10894 if (hdr->sh_type == SHT_NOTE)
10895 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
10896
10897 return TRUE;
10898 }
10899
10900 static void
10901 elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
10902 {
10903 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
10904 }
10905
10906 /* Return TRUE if this is an unwinding table entry. */
10907
10908 static bfd_boolean
10909 is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
10910 {
10911 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
10912 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
10913 }
10914
10915
10916 /* Set the type and flags for an ARM section. We do this by
10917 the section name, which is a hack, but ought to work. */
10918
10919 static bfd_boolean
10920 elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
10921 {
10922 const char * name;
10923
10924 name = bfd_get_section_name (abfd, sec);
10925
10926 if (is_arm_elf_unwind_section_name (abfd, name))
10927 {
10928 hdr->sh_type = SHT_ARM_EXIDX;
10929 hdr->sh_flags |= SHF_LINK_ORDER;
10930 }
10931 return TRUE;
10932 }
10933
10934 /* Handle an ARM specific section when reading an object file. This is
10935 called when bfd_section_from_shdr finds a section with an unknown
10936 type. */
10937
10938 static bfd_boolean
10939 elf32_arm_section_from_shdr (bfd *abfd,
10940 Elf_Internal_Shdr * hdr,
10941 const char *name,
10942 int shindex)
10943 {
10944 /* There ought to be a place to keep ELF backend specific flags, but
10945 at the moment there isn't one. We just keep track of the
10946 sections by their name, instead. Fortunately, the ABI gives
10947 names for all the ARM specific sections, so we will probably get
10948 away with this. */
10949 switch (hdr->sh_type)
10950 {
10951 case SHT_ARM_EXIDX:
10952 case SHT_ARM_PREEMPTMAP:
10953 case SHT_ARM_ATTRIBUTES:
10954 break;
10955
10956 default:
10957 return FALSE;
10958 }
10959
10960 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
10961 return FALSE;
10962
10963 return TRUE;
10964 }
10965
10966 /* A structure used to record a list of sections, independently
10967 of the next and prev fields in the asection structure. */
10968 typedef struct section_list
10969 {
10970 asection * sec;
10971 struct section_list * next;
10972 struct section_list * prev;
10973 }
10974 section_list;
10975
10976 /* Unfortunately we need to keep a list of sections for which
10977 an _arm_elf_section_data structure has been allocated. This
10978 is because it is possible for functions like elf32_arm_write_section
10979 to be called on a section which has had an elf_data_structure
10980 allocated for it (and so the used_by_bfd field is valid) but
10981 for which the ARM extended version of this structure - the
10982 _arm_elf_section_data structure - has not been allocated. */
10983 static section_list * sections_with_arm_elf_section_data = NULL;
10984
10985 static void
10986 record_section_with_arm_elf_section_data (asection * sec)
10987 {
10988 struct section_list * entry;
10989
10990 entry = bfd_malloc (sizeof (* entry));
10991 if (entry == NULL)
10992 return;
10993 entry->sec = sec;
10994 entry->next = sections_with_arm_elf_section_data;
10995 entry->prev = NULL;
10996 if (entry->next != NULL)
10997 entry->next->prev = entry;
10998 sections_with_arm_elf_section_data = entry;
10999 }
11000
11001 static struct section_list *
11002 find_arm_elf_section_entry (asection * sec)
11003 {
11004 struct section_list * entry;
11005 static struct section_list * last_entry = NULL;
11006
11007 /* This is a short cut for the typical case where the sections are added
11008 to the sections_with_arm_elf_section_data list in forward order and
11009 then looked up here in backwards order. This makes a real difference
11010 to the ld-srec/sec64k.exp linker test. */
11011 entry = sections_with_arm_elf_section_data;
11012 if (last_entry != NULL)
11013 {
11014 if (last_entry->sec == sec)
11015 entry = last_entry;
11016 else if (last_entry->next != NULL
11017 && last_entry->next->sec == sec)
11018 entry = last_entry->next;
11019 }
11020
11021 for (; entry; entry = entry->next)
11022 if (entry->sec == sec)
11023 break;
11024
11025 if (entry)
11026 /* Record the entry prior to this one - it is the entry we are most
11027 likely to want to locate next time. Also this way if we have been
11028 called from unrecord_section_with_arm_elf_section_data() we will not
11029 be caching a pointer that is about to be freed. */
11030 last_entry = entry->prev;
11031
11032 return entry;
11033 }
11034
11035 static _arm_elf_section_data *
11036 get_arm_elf_section_data (asection * sec)
11037 {
11038 struct section_list * entry;
11039
11040 entry = find_arm_elf_section_entry (sec);
11041
11042 if (entry)
11043 return elf32_arm_section_data (entry->sec);
11044 else
11045 return NULL;
11046 }
11047
11048 static void
11049 unrecord_section_with_arm_elf_section_data (asection * sec)
11050 {
11051 struct section_list * entry;
11052
11053 entry = find_arm_elf_section_entry (sec);
11054
11055 if (entry)
11056 {
11057 if (entry->prev != NULL)
11058 entry->prev->next = entry->next;
11059 if (entry->next != NULL)
11060 entry->next->prev = entry->prev;
11061 if (entry == sections_with_arm_elf_section_data)
11062 sections_with_arm_elf_section_data = entry->next;
11063 free (entry);
11064 }
11065 }
11066
11067
11068 typedef struct
11069 {
11070 void *finfo;
11071 struct bfd_link_info *info;
11072 asection *sec;
11073 int sec_shndx;
11074 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
11075 asection *, struct elf_link_hash_entry *);
11076 } output_arch_syminfo;
11077
11078 enum map_symbol_type
11079 {
11080 ARM_MAP_ARM,
11081 ARM_MAP_THUMB,
11082 ARM_MAP_DATA
11083 };
11084
11085
11086 /* Output a single mapping symbol. */
11087
11088 static bfd_boolean
11089 elf32_arm_output_map_sym (output_arch_syminfo *osi,
11090 enum map_symbol_type type,
11091 bfd_vma offset)
11092 {
11093 static const char *names[3] = {"$a", "$t", "$d"};
11094 struct elf32_arm_link_hash_table *htab;
11095 Elf_Internal_Sym sym;
11096
11097 htab = elf32_arm_hash_table (osi->info);
11098 sym.st_value = osi->sec->output_section->vma
11099 + osi->sec->output_offset
11100 + offset;
11101 sym.st_size = 0;
11102 sym.st_other = 0;
11103 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
11104 sym.st_shndx = osi->sec_shndx;
11105 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
11106 return FALSE;
11107 return TRUE;
11108 }
11109
11110
11111 /* Output mapping symbols for PLT entries associated with H. */
11112
11113 static bfd_boolean
11114 elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
11115 {
11116 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
11117 struct elf32_arm_link_hash_table *htab;
11118 struct elf32_arm_link_hash_entry *eh;
11119 bfd_vma addr;
11120
11121 htab = elf32_arm_hash_table (osi->info);
11122
11123 if (h->root.type == bfd_link_hash_indirect)
11124 return TRUE;
11125
11126 if (h->root.type == bfd_link_hash_warning)
11127 /* When warning symbols are created, they **replace** the "real"
11128 entry in the hash table, thus we never get to see the real
11129 symbol in a hash traversal. So look at it now. */
11130 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11131
11132 if (h->plt.offset == (bfd_vma) -1)
11133 return TRUE;
11134
11135 eh = (struct elf32_arm_link_hash_entry *) h;
11136 addr = h->plt.offset;
11137 if (htab->symbian_p)
11138 {
11139 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11140 return FALSE;
11141 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
11142 return FALSE;
11143 }
11144 else if (htab->vxworks_p)
11145 {
11146 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11147 return FALSE;
11148 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
11149 return FALSE;
11150 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12))
11151 return FALSE;
11152 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20))
11153 return FALSE;
11154 }
11155 else
11156 {
11157 bfd_signed_vma thumb_refs;
11158
11159 thumb_refs = eh->plt_thumb_refcount;
11160 if (!htab->use_blx)
11161 thumb_refs += eh->plt_maybe_thumb_refcount;
11162
11163 if (thumb_refs > 0)
11164 {
11165 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4))
11166 return FALSE;
11167 }
11168 #ifdef FOUR_WORD_PLT
11169 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11170 return FALSE;
11171 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
11172 return FALSE;
11173 #else
11174 /* A three-word PLT with no Thumb thunk contains only Arm code,
11175 so only need to output a mapping symbol for the first PLT entry and
11176 entries with thumb thunks. */
11177 if (thumb_refs > 0 || addr == 20)
11178 {
11179 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11180 return FALSE;
11181 }
11182 #endif
11183 }
11184
11185 return TRUE;
11186 }
11187
11188 /* Output a single local symbol for a generated stub. */
11189
11190 static bfd_boolean
11191 elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name,
11192 bfd_vma offset, bfd_vma size)
11193 {
11194 struct elf32_arm_link_hash_table *htab;
11195 Elf_Internal_Sym sym;
11196
11197 htab = elf32_arm_hash_table (osi->info);
11198 sym.st_value = osi->sec->output_section->vma
11199 + osi->sec->output_offset
11200 + offset;
11201 sym.st_size = size;
11202 sym.st_other = 0;
11203 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
11204 sym.st_shndx = osi->sec_shndx;
11205 if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL))
11206 return FALSE;
11207 return TRUE;
11208 }
11209
11210 static bfd_boolean
11211 arm_map_one_stub (struct bfd_hash_entry * gen_entry,
11212 void * in_arg)
11213 {
11214 struct elf32_arm_stub_hash_entry *stub_entry;
11215 struct bfd_link_info *info;
11216 struct elf32_arm_link_hash_table *htab;
11217 asection *stub_sec;
11218 bfd_vma addr;
11219 char *stub_name;
11220 output_arch_syminfo *osi;
11221
11222 /* Massage our args to the form they really have. */
11223 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
11224 osi = (output_arch_syminfo *) in_arg;
11225
11226 info = osi->info;
11227
11228 htab = elf32_arm_hash_table (info);
11229 stub_sec = stub_entry->stub_sec;
11230
11231 /* Ensure this stub is attached to the current section being
11232 processed. */
11233 if (stub_sec != osi->sec)
11234 return TRUE;
11235
11236 addr = (bfd_vma) stub_entry->stub_offset;
11237 stub_name = stub_entry->output_name;
11238
11239 switch (stub_entry->stub_type)
11240 {
11241 case arm_stub_long_branch:
11242 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 8))
11243 return FALSE;
11244 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11245 return FALSE;
11246 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
11247 return FALSE;
11248 break;
11249 case arm_thumb_v4t_stub_long_branch:
11250 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 12))
11251 return FALSE;
11252 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11253 return FALSE;
11254 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
11255 return FALSE;
11256 break;
11257 case arm_thumb_thumb_stub_long_branch:
11258 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 16))
11259 return FALSE;
11260 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr))
11261 return FALSE;
11262 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
11263 return FALSE;
11264 break;
11265 case arm_thumb_arm_v4t_stub_long_branch:
11266 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 20))
11267 return FALSE;
11268 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr))
11269 return FALSE;
11270 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 8))
11271 return FALSE;
11272 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 16))
11273 return FALSE;
11274 break;
11275 case arm_thumb_arm_v4t_stub_short_branch:
11276 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 8))
11277 return FALSE;
11278 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 4))
11279 return FALSE;
11280 break;
11281 case arm_stub_pic_long_branch:
11282 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 12))
11283 return FALSE;
11284 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11285 return FALSE;
11286 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
11287 return FALSE;
11288 break;
11289 default:
11290 BFD_FAIL ();
11291 }
11292
11293 return TRUE;
11294 }
11295
11296 /* Output mapping symbols for linker generated sections. */
11297
11298 static bfd_boolean
11299 elf32_arm_output_arch_local_syms (bfd *output_bfd,
11300 struct bfd_link_info *info,
11301 void *finfo,
11302 bfd_boolean (*func) (void *, const char *,
11303 Elf_Internal_Sym *,
11304 asection *,
11305 struct elf_link_hash_entry *))
11306 {
11307 output_arch_syminfo osi;
11308 struct elf32_arm_link_hash_table *htab;
11309 bfd_vma offset;
11310 bfd_size_type size;
11311
11312 htab = elf32_arm_hash_table (info);
11313 check_use_blx (htab);
11314
11315 osi.finfo = finfo;
11316 osi.info = info;
11317 osi.func = func;
11318
11319 /* ARM->Thumb glue. */
11320 if (htab->arm_glue_size > 0)
11321 {
11322 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11323 ARM2THUMB_GLUE_SECTION_NAME);
11324
11325 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11326 (output_bfd, osi.sec->output_section);
11327 if (info->shared || htab->root.is_relocatable_executable
11328 || htab->pic_veneer)
11329 size = ARM2THUMB_PIC_GLUE_SIZE;
11330 else if (htab->use_blx)
11331 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
11332 else
11333 size = ARM2THUMB_STATIC_GLUE_SIZE;
11334
11335 for (offset = 0; offset < htab->arm_glue_size; offset += size)
11336 {
11337 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset);
11338 elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
11339 }
11340 }
11341
11342 /* Thumb->ARM glue. */
11343 if (htab->thumb_glue_size > 0)
11344 {
11345 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11346 THUMB2ARM_GLUE_SECTION_NAME);
11347
11348 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11349 (output_bfd, osi.sec->output_section);
11350 size = THUMB2ARM_GLUE_SIZE;
11351
11352 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
11353 {
11354 elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset);
11355 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4);
11356 }
11357 }
11358
11359 /* ARMv4 BX veneers. */
11360 if (htab->bx_glue_size > 0)
11361 {
11362 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11363 ARM_BX_GLUE_SECTION_NAME);
11364
11365 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11366 (output_bfd, osi.sec->output_section);
11367
11368 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0);
11369 }
11370
11371 /* Long calls stubs. */
11372 if (htab->stub_bfd && htab->stub_bfd->sections)
11373 {
11374 asection* stub_sec;
11375
11376 for (stub_sec = htab->stub_bfd->sections;
11377 stub_sec != NULL;
11378 stub_sec = stub_sec->next)
11379 {
11380 /* Ignore non-stub sections. */
11381 if (!strstr (stub_sec->name, STUB_SUFFIX))
11382 continue;
11383
11384 osi.sec = stub_sec;
11385
11386 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11387 (output_bfd, osi.sec->output_section);
11388
11389 bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi);
11390 }
11391 }
11392
11393 /* Finally, output mapping symbols for the PLT. */
11394 if (!htab->splt || htab->splt->size == 0)
11395 return TRUE;
11396
11397 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
11398 htab->splt->output_section);
11399 osi.sec = htab->splt;
11400 /* Output mapping symbols for the plt header. SymbianOS does not have a
11401 plt header. */
11402 if (htab->vxworks_p)
11403 {
11404 /* VxWorks shared libraries have no PLT header. */
11405 if (!info->shared)
11406 {
11407 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
11408 return FALSE;
11409 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12))
11410 return FALSE;
11411 }
11412 }
11413 else if (!htab->symbian_p)
11414 {
11415 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
11416 return FALSE;
11417 #ifndef FOUR_WORD_PLT
11418 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16))
11419 return FALSE;
11420 #endif
11421 }
11422
11423 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
11424 return TRUE;
11425 }
11426
11427 /* Allocate target specific section data. */
11428
11429 static bfd_boolean
11430 elf32_arm_new_section_hook (bfd *abfd, asection *sec)
11431 {
11432 if (!sec->used_by_bfd)
11433 {
11434 _arm_elf_section_data *sdata;
11435 bfd_size_type amt = sizeof (*sdata);
11436
11437 sdata = bfd_zalloc (abfd, amt);
11438 if (sdata == NULL)
11439 return FALSE;
11440 sec->used_by_bfd = sdata;
11441 }
11442
11443 record_section_with_arm_elf_section_data (sec);
11444
11445 return _bfd_elf_new_section_hook (abfd, sec);
11446 }
11447
11448
11449 /* Used to order a list of mapping symbols by address. */
11450
11451 static int
11452 elf32_arm_compare_mapping (const void * a, const void * b)
11453 {
11454 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
11455 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
11456
11457 if (amap->vma > bmap->vma)
11458 return 1;
11459 else if (amap->vma < bmap->vma)
11460 return -1;
11461 else if (amap->type > bmap->type)
11462 /* Ensure results do not depend on the host qsort for objects with
11463 multiple mapping symbols at the same address by sorting on type
11464 after vma. */
11465 return 1;
11466 else if (amap->type < bmap->type)
11467 return -1;
11468 else
11469 return 0;
11470 }
11471
11472
11473 /* Do code byteswapping. Return FALSE afterwards so that the section is
11474 written out as normal. */
11475
11476 static bfd_boolean
11477 elf32_arm_write_section (bfd *output_bfd,
11478 struct bfd_link_info *link_info,
11479 asection *sec,
11480 bfd_byte *contents)
11481 {
11482 int mapcount, errcount;
11483 _arm_elf_section_data *arm_data;
11484 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
11485 elf32_arm_section_map *map;
11486 elf32_vfp11_erratum_list *errnode;
11487 bfd_vma ptr;
11488 bfd_vma end;
11489 bfd_vma offset = sec->output_section->vma + sec->output_offset;
11490 bfd_byte tmp;
11491 int i;
11492
11493 /* If this section has not been allocated an _arm_elf_section_data
11494 structure then we cannot record anything. */
11495 arm_data = get_arm_elf_section_data (sec);
11496 if (arm_data == NULL)
11497 return FALSE;
11498
11499 mapcount = arm_data->mapcount;
11500 map = arm_data->map;
11501 errcount = arm_data->erratumcount;
11502
11503 if (errcount != 0)
11504 {
11505 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
11506
11507 for (errnode = arm_data->erratumlist; errnode != 0;
11508 errnode = errnode->next)
11509 {
11510 bfd_vma index = errnode->vma - offset;
11511
11512 switch (errnode->type)
11513 {
11514 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
11515 {
11516 bfd_vma branch_to_veneer;
11517 /* Original condition code of instruction, plus bit mask for
11518 ARM B instruction. */
11519 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
11520 | 0x0a000000;
11521
11522 /* The instruction is before the label. */
11523 index -= 4;
11524
11525 /* Above offset included in -4 below. */
11526 branch_to_veneer = errnode->u.b.veneer->vma
11527 - errnode->vma - 4;
11528
11529 if ((signed) branch_to_veneer < -(1 << 25)
11530 || (signed) branch_to_veneer >= (1 << 25))
11531 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
11532 "range"), output_bfd);
11533
11534 insn |= (branch_to_veneer >> 2) & 0xffffff;
11535 contents[endianflip ^ index] = insn & 0xff;
11536 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
11537 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
11538 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
11539 }
11540 break;
11541
11542 case VFP11_ERRATUM_ARM_VENEER:
11543 {
11544 bfd_vma branch_from_veneer;
11545 unsigned int insn;
11546
11547 /* Take size of veneer into account. */
11548 branch_from_veneer = errnode->u.v.branch->vma
11549 - errnode->vma - 12;
11550
11551 if ((signed) branch_from_veneer < -(1 << 25)
11552 || (signed) branch_from_veneer >= (1 << 25))
11553 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
11554 "range"), output_bfd);
11555
11556 /* Original instruction. */
11557 insn = errnode->u.v.branch->u.b.vfp_insn;
11558 contents[endianflip ^ index] = insn & 0xff;
11559 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
11560 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
11561 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
11562
11563 /* Branch back to insn after original insn. */
11564 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
11565 contents[endianflip ^ (index + 4)] = insn & 0xff;
11566 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
11567 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
11568 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
11569 }
11570 break;
11571
11572 default:
11573 abort ();
11574 }
11575 }
11576 }
11577
11578 if (mapcount == 0)
11579 return FALSE;
11580
11581 if (globals->byteswap_code)
11582 {
11583 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
11584
11585 ptr = map[0].vma;
11586 for (i = 0; i < mapcount; i++)
11587 {
11588 if (i == mapcount - 1)
11589 end = sec->size;
11590 else
11591 end = map[i + 1].vma;
11592
11593 switch (map[i].type)
11594 {
11595 case 'a':
11596 /* Byte swap code words. */
11597 while (ptr + 3 < end)
11598 {
11599 tmp = contents[ptr];
11600 contents[ptr] = contents[ptr + 3];
11601 contents[ptr + 3] = tmp;
11602 tmp = contents[ptr + 1];
11603 contents[ptr + 1] = contents[ptr + 2];
11604 contents[ptr + 2] = tmp;
11605 ptr += 4;
11606 }
11607 break;
11608
11609 case 't':
11610 /* Byte swap code halfwords. */
11611 while (ptr + 1 < end)
11612 {
11613 tmp = contents[ptr];
11614 contents[ptr] = contents[ptr + 1];
11615 contents[ptr + 1] = tmp;
11616 ptr += 2;
11617 }
11618 break;
11619
11620 case 'd':
11621 /* Leave data alone. */
11622 break;
11623 }
11624 ptr = end;
11625 }
11626 }
11627
11628 free (map);
11629 arm_data->mapcount = 0;
11630 arm_data->mapsize = 0;
11631 arm_data->map = NULL;
11632 unrecord_section_with_arm_elf_section_data (sec);
11633
11634 return FALSE;
11635 }
11636
11637 static void
11638 unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
11639 asection * sec,
11640 void * ignore ATTRIBUTE_UNUSED)
11641 {
11642 unrecord_section_with_arm_elf_section_data (sec);
11643 }
11644
11645 static bfd_boolean
11646 elf32_arm_close_and_cleanup (bfd * abfd)
11647 {
11648 if (abfd->sections)
11649 bfd_map_over_sections (abfd,
11650 unrecord_section_via_map_over_sections,
11651 NULL);
11652
11653 return _bfd_elf_close_and_cleanup (abfd);
11654 }
11655
11656 static bfd_boolean
11657 elf32_arm_bfd_free_cached_info (bfd * abfd)
11658 {
11659 if (abfd->sections)
11660 bfd_map_over_sections (abfd,
11661 unrecord_section_via_map_over_sections,
11662 NULL);
11663
11664 return _bfd_free_cached_info (abfd);
11665 }
11666
11667 /* Display STT_ARM_TFUNC symbols as functions. */
11668
11669 static void
11670 elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
11671 asymbol *asym)
11672 {
11673 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
11674
11675 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
11676 elfsym->symbol.flags |= BSF_FUNCTION;
11677 }
11678
11679
11680 /* Mangle thumb function symbols as we read them in. */
11681
11682 static bfd_boolean
11683 elf32_arm_swap_symbol_in (bfd * abfd,
11684 const void *psrc,
11685 const void *pshn,
11686 Elf_Internal_Sym *dst)
11687 {
11688 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
11689 return FALSE;
11690
11691 /* New EABI objects mark thumb function symbols by setting the low bit of
11692 the address. Turn these into STT_ARM_TFUNC. */
11693 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
11694 && (dst->st_value & 1))
11695 {
11696 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
11697 dst->st_value &= ~(bfd_vma) 1;
11698 }
11699 return TRUE;
11700 }
11701
11702
11703 /* Mangle thumb function symbols as we write them out. */
11704
11705 static void
11706 elf32_arm_swap_symbol_out (bfd *abfd,
11707 const Elf_Internal_Sym *src,
11708 void *cdst,
11709 void *shndx)
11710 {
11711 Elf_Internal_Sym newsym;
11712
11713 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
11714 of the address set, as per the new EABI. We do this unconditionally
11715 because objcopy does not set the elf header flags until after
11716 it writes out the symbol table. */
11717 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
11718 {
11719 newsym = *src;
11720 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
11721 if (newsym.st_shndx != SHN_UNDEF)
11722 {
11723 /* Do this only for defined symbols. At link type, the static
11724 linker will simulate the work of dynamic linker of resolving
11725 symbols and will carry over the thumbness of found symbols to
11726 the output symbol table. It's not clear how it happens, but
11727 the thumbness of undefined symbols can well be different at
11728 runtime, and writing '1' for them will be confusing for users
11729 and possibly for dynamic linker itself.
11730 */
11731 newsym.st_value |= 1;
11732 }
11733
11734 src = &newsym;
11735 }
11736 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
11737 }
11738
11739 /* Add the PT_ARM_EXIDX program header. */
11740
11741 static bfd_boolean
11742 elf32_arm_modify_segment_map (bfd *abfd,
11743 struct bfd_link_info *info ATTRIBUTE_UNUSED)
11744 {
11745 struct elf_segment_map *m;
11746 asection *sec;
11747
11748 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
11749 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
11750 {
11751 /* If there is already a PT_ARM_EXIDX header, then we do not
11752 want to add another one. This situation arises when running
11753 "strip"; the input binary already has the header. */
11754 m = elf_tdata (abfd)->segment_map;
11755 while (m && m->p_type != PT_ARM_EXIDX)
11756 m = m->next;
11757 if (!m)
11758 {
11759 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
11760 if (m == NULL)
11761 return FALSE;
11762 m->p_type = PT_ARM_EXIDX;
11763 m->count = 1;
11764 m->sections[0] = sec;
11765
11766 m->next = elf_tdata (abfd)->segment_map;
11767 elf_tdata (abfd)->segment_map = m;
11768 }
11769 }
11770
11771 return TRUE;
11772 }
11773
11774 /* We may add a PT_ARM_EXIDX program header. */
11775
11776 static int
11777 elf32_arm_additional_program_headers (bfd *abfd,
11778 struct bfd_link_info *info ATTRIBUTE_UNUSED)
11779 {
11780 asection *sec;
11781
11782 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
11783 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
11784 return 1;
11785 else
11786 return 0;
11787 }
11788
11789 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
11790
11791 static bfd_boolean
11792 elf32_arm_is_function_type (unsigned int type)
11793 {
11794 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
11795 }
11796
11797 /* We use this to override swap_symbol_in and swap_symbol_out. */
11798 const struct elf_size_info elf32_arm_size_info =
11799 {
11800 sizeof (Elf32_External_Ehdr),
11801 sizeof (Elf32_External_Phdr),
11802 sizeof (Elf32_External_Shdr),
11803 sizeof (Elf32_External_Rel),
11804 sizeof (Elf32_External_Rela),
11805 sizeof (Elf32_External_Sym),
11806 sizeof (Elf32_External_Dyn),
11807 sizeof (Elf_External_Note),
11808 4,
11809 1,
11810 32, 2,
11811 ELFCLASS32, EV_CURRENT,
11812 bfd_elf32_write_out_phdrs,
11813 bfd_elf32_write_shdrs_and_ehdr,
11814 bfd_elf32_checksum_contents,
11815 bfd_elf32_write_relocs,
11816 elf32_arm_swap_symbol_in,
11817 elf32_arm_swap_symbol_out,
11818 bfd_elf32_slurp_reloc_table,
11819 bfd_elf32_slurp_symbol_table,
11820 bfd_elf32_swap_dyn_in,
11821 bfd_elf32_swap_dyn_out,
11822 bfd_elf32_swap_reloc_in,
11823 bfd_elf32_swap_reloc_out,
11824 bfd_elf32_swap_reloca_in,
11825 bfd_elf32_swap_reloca_out
11826 };
11827
11828 #define ELF_ARCH bfd_arch_arm
11829 #define ELF_MACHINE_CODE EM_ARM
11830 #ifdef __QNXTARGET__
11831 #define ELF_MAXPAGESIZE 0x1000
11832 #else
11833 #define ELF_MAXPAGESIZE 0x8000
11834 #endif
11835 #define ELF_MINPAGESIZE 0x1000
11836 #define ELF_COMMONPAGESIZE 0x1000
11837
11838 #define bfd_elf32_mkobject elf32_arm_mkobject
11839
11840 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
11841 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
11842 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
11843 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
11844 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
11845 #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
11846 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
11847 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
11848 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
11849 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
11850 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
11851 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
11852 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
11853 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
11854
11855 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
11856 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
11857 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
11858 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
11859 #define elf_backend_check_relocs elf32_arm_check_relocs
11860 #define elf_backend_relocate_section elf32_arm_relocate_section
11861 #define elf_backend_write_section elf32_arm_write_section
11862 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
11863 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
11864 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
11865 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
11866 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
11867 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
11868 #define elf_backend_post_process_headers elf32_arm_post_process_headers
11869 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
11870 #define elf_backend_object_p elf32_arm_object_p
11871 #define elf_backend_section_flags elf32_arm_section_flags
11872 #define elf_backend_fake_sections elf32_arm_fake_sections
11873 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
11874 #define elf_backend_final_write_processing elf32_arm_final_write_processing
11875 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
11876 #define elf_backend_symbol_processing elf32_arm_symbol_processing
11877 #define elf_backend_size_info elf32_arm_size_info
11878 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
11879 #define elf_backend_additional_program_headers elf32_arm_additional_program_headers
11880 #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
11881 #define elf_backend_begin_write_processing elf32_arm_begin_write_processing
11882 #define elf_backend_is_function_type elf32_arm_is_function_type
11883
11884 #define elf_backend_can_refcount 1
11885 #define elf_backend_can_gc_sections 1
11886 #define elf_backend_plt_readonly 1
11887 #define elf_backend_want_got_plt 1
11888 #define elf_backend_want_plt_sym 0
11889 #define elf_backend_may_use_rel_p 1
11890 #define elf_backend_may_use_rela_p 0
11891 #define elf_backend_default_use_rela_p 0
11892
11893 #define elf_backend_got_header_size 12
11894
11895 #undef elf_backend_obj_attrs_vendor
11896 #define elf_backend_obj_attrs_vendor "aeabi"
11897 #undef elf_backend_obj_attrs_section
11898 #define elf_backend_obj_attrs_section ".ARM.attributes"
11899 #undef elf_backend_obj_attrs_arg_type
11900 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
11901 #undef elf_backend_obj_attrs_section_type
11902 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
11903
11904 #include "elf32-target.h"
11905
11906 /* VxWorks Targets. */
11907
11908 #undef TARGET_LITTLE_SYM
11909 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
11910 #undef TARGET_LITTLE_NAME
11911 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
11912 #undef TARGET_BIG_SYM
11913 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
11914 #undef TARGET_BIG_NAME
11915 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
11916
11917 /* Like elf32_arm_link_hash_table_create -- but overrides
11918 appropriately for VxWorks. */
11919
11920 static struct bfd_link_hash_table *
11921 elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
11922 {
11923 struct bfd_link_hash_table *ret;
11924
11925 ret = elf32_arm_link_hash_table_create (abfd);
11926 if (ret)
11927 {
11928 struct elf32_arm_link_hash_table *htab
11929 = (struct elf32_arm_link_hash_table *) ret;
11930 htab->use_rel = 0;
11931 htab->vxworks_p = 1;
11932 }
11933 return ret;
11934 }
11935
11936 static void
11937 elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11938 {
11939 elf32_arm_final_write_processing (abfd, linker);
11940 elf_vxworks_final_write_processing (abfd, linker);
11941 }
11942
11943 #undef elf32_bed
11944 #define elf32_bed elf32_arm_vxworks_bed
11945
11946 #undef bfd_elf32_bfd_link_hash_table_create
11947 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
11948 #undef elf_backend_add_symbol_hook
11949 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
11950 #undef elf_backend_final_write_processing
11951 #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
11952 #undef elf_backend_emit_relocs
11953 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
11954
11955 #undef elf_backend_may_use_rel_p
11956 #define elf_backend_may_use_rel_p 0
11957 #undef elf_backend_may_use_rela_p
11958 #define elf_backend_may_use_rela_p 1
11959 #undef elf_backend_default_use_rela_p
11960 #define elf_backend_default_use_rela_p 1
11961 #undef elf_backend_want_plt_sym
11962 #define elf_backend_want_plt_sym 1
11963 #undef ELF_MAXPAGESIZE
11964 #define ELF_MAXPAGESIZE 0x1000
11965
11966 #include "elf32-target.h"
11967
11968
11969 /* Symbian OS Targets. */
11970
11971 #undef TARGET_LITTLE_SYM
11972 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
11973 #undef TARGET_LITTLE_NAME
11974 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
11975 #undef TARGET_BIG_SYM
11976 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
11977 #undef TARGET_BIG_NAME
11978 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
11979
11980 /* Like elf32_arm_link_hash_table_create -- but overrides
11981 appropriately for Symbian OS. */
11982
11983 static struct bfd_link_hash_table *
11984 elf32_arm_symbian_link_hash_table_create (bfd *abfd)
11985 {
11986 struct bfd_link_hash_table *ret;
11987
11988 ret = elf32_arm_link_hash_table_create (abfd);
11989 if (ret)
11990 {
11991 struct elf32_arm_link_hash_table *htab
11992 = (struct elf32_arm_link_hash_table *)ret;
11993 /* There is no PLT header for Symbian OS. */
11994 htab->plt_header_size = 0;
11995 /* The PLT entries are each one instruction and one word. */
11996 htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry);
11997 htab->symbian_p = 1;
11998 /* Symbian uses armv5t or above, so use_blx is always true. */
11999 htab->use_blx = 1;
12000 htab->root.is_relocatable_executable = 1;
12001 }
12002 return ret;
12003 }
12004
12005 static const struct bfd_elf_special_section
12006 elf32_arm_symbian_special_sections[] =
12007 {
12008 /* In a BPABI executable, the dynamic linking sections do not go in
12009 the loadable read-only segment. The post-linker may wish to
12010 refer to these sections, but they are not part of the final
12011 program image. */
12012 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
12013 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
12014 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
12015 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
12016 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
12017 /* These sections do not need to be writable as the SymbianOS
12018 postlinker will arrange things so that no dynamic relocation is
12019 required. */
12020 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
12021 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
12022 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
12023 { NULL, 0, 0, 0, 0 }
12024 };
12025
12026 static void
12027 elf32_arm_symbian_begin_write_processing (bfd *abfd,
12028 struct bfd_link_info *link_info)
12029 {
12030 /* BPABI objects are never loaded directly by an OS kernel; they are
12031 processed by a postlinker first, into an OS-specific format. If
12032 the D_PAGED bit is set on the file, BFD will align segments on
12033 page boundaries, so that an OS can directly map the file. With
12034 BPABI objects, that just results in wasted space. In addition,
12035 because we clear the D_PAGED bit, map_sections_to_segments will
12036 recognize that the program headers should not be mapped into any
12037 loadable segment. */
12038 abfd->flags &= ~D_PAGED;
12039 elf32_arm_begin_write_processing (abfd, link_info);
12040 }
12041
12042 static bfd_boolean
12043 elf32_arm_symbian_modify_segment_map (bfd *abfd,
12044 struct bfd_link_info *info)
12045 {
12046 struct elf_segment_map *m;
12047 asection *dynsec;
12048
12049 /* BPABI shared libraries and executables should have a PT_DYNAMIC
12050 segment. However, because the .dynamic section is not marked
12051 with SEC_LOAD, the generic ELF code will not create such a
12052 segment. */
12053 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
12054 if (dynsec)
12055 {
12056 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
12057 if (m->p_type == PT_DYNAMIC)
12058 break;
12059
12060 if (m == NULL)
12061 {
12062 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
12063 m->next = elf_tdata (abfd)->segment_map;
12064 elf_tdata (abfd)->segment_map = m;
12065 }
12066 }
12067
12068 /* Also call the generic arm routine. */
12069 return elf32_arm_modify_segment_map (abfd, info);
12070 }
12071
12072 /* Return address for Ith PLT stub in section PLT, for relocation REL
12073 or (bfd_vma) -1 if it should not be included. */
12074
12075 static bfd_vma
12076 elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt,
12077 const arelent *rel ATTRIBUTE_UNUSED)
12078 {
12079 return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i;
12080 }
12081
12082
12083 #undef elf32_bed
12084 #define elf32_bed elf32_arm_symbian_bed
12085
12086 /* The dynamic sections are not allocated on SymbianOS; the postlinker
12087 will process them and then discard them. */
12088 #undef ELF_DYNAMIC_SEC_FLAGS
12089 #define ELF_DYNAMIC_SEC_FLAGS \
12090 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
12091
12092 #undef elf_backend_add_symbol_hook
12093 #undef elf_backend_emit_relocs
12094
12095 #undef bfd_elf32_bfd_link_hash_table_create
12096 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12097 #undef elf_backend_special_sections
12098 #define elf_backend_special_sections elf32_arm_symbian_special_sections
12099 #undef elf_backend_begin_write_processing
12100 #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12101 #undef elf_backend_final_write_processing
12102 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12103
12104 #undef elf_backend_modify_segment_map
12105 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12106
12107 /* There is no .got section for BPABI objects, and hence no header. */
12108 #undef elf_backend_got_header_size
12109 #define elf_backend_got_header_size 0
12110
12111 /* Similarly, there is no .got.plt section. */
12112 #undef elf_backend_want_got_plt
12113 #define elf_backend_want_got_plt 0
12114
12115 #undef elf_backend_plt_sym_val
12116 #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12117
12118 #undef elf_backend_may_use_rel_p
12119 #define elf_backend_may_use_rel_p 1
12120 #undef elf_backend_may_use_rela_p
12121 #define elf_backend_may_use_rela_p 0
12122 #undef elf_backend_default_use_rela_p
12123 #define elf_backend_default_use_rela_p 0
12124 #undef elf_backend_want_plt_sym
12125 #define elf_backend_want_plt_sym 0
12126 #undef ELF_MAXPAGESIZE
12127 #define ELF_MAXPAGESIZE 0x8000
12128
12129 #include "elf32-target.h"
NetBSD on the FriendlyARM MINI2440