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[deliverable/binutils-gdb.git] / bfd / elf32-arm.c
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252b5132 1/* 32-bit ELF support for ARM
e44a2c9c
AM		 2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 Free Software Foundation, Inc.
252b5132
RH		 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
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
252b5132
RH		 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
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132 21
7f266840 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
00a97672 24#include "libiberty.h"
7f266840
DJ		 25#include "libbfd.h"
26#include "elf-bfd.h"
00a97672 27#include "elf-vxworks.h"
ee065d83 28#include "elf/arm.h"
7f266840
DJ		 29
30#ifndef NUM_ELEM
31#define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
32#endif
33
00a97672
RS		 34/* Return the relocation section associated with NAME. HTAB is the
35 bfd's elf32_arm_link_hash_entry. */
36#define RELOC_SECTION(HTAB, NAME) \
37 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
38
39/* Return size of a relocation entry. HTAB is the bfd's
40 elf32_arm_link_hash_entry. */
41#define RELOC_SIZE(HTAB) \
42 ((HTAB)->use_rel \
43 ? sizeof (Elf32_External_Rel) \
44 : sizeof (Elf32_External_Rela))
45
46/* Return function to swap relocations in. HTAB is the bfd's
47 elf32_arm_link_hash_entry. */
48#define SWAP_RELOC_IN(HTAB) \
49 ((HTAB)->use_rel \
50 ? bfd_elf32_swap_reloc_in \
51 : bfd_elf32_swap_reloca_in)
52
53/* Return function to swap relocations out. HTAB is the bfd's
54 elf32_arm_link_hash_entry. */
55#define SWAP_RELOC_OUT(HTAB) \
56 ((HTAB)->use_rel \
57 ? bfd_elf32_swap_reloc_out \
58 : bfd_elf32_swap_reloca_out)
59
7f266840
DJ		 60#define elf_info_to_howto 0
61#define elf_info_to_howto_rel elf32_arm_info_to_howto
62
63#define ARM_ELF_ABI_VERSION 0
64#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
65
24718e3b 66static struct elf_backend_data elf32_arm_vxworks_bed;
00a97672 67
7f266840
DJ		 68/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
69 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
70 in that slot. */
71
c19d1205 72static reloc_howto_type elf32_arm_howto_table_1[] =
7f266840
DJ		 73{
74 /* No relocation */
75 HOWTO (R_ARM_NONE, /* type */
76 0, /* rightshift */
77 0, /* size (0 = byte, 1 = short, 2 = long) */
78 0, /* bitsize */
79 FALSE, /* pc_relative */
80 0, /* bitpos */
81 complain_overflow_dont,/* complain_on_overflow */
82 bfd_elf_generic_reloc, /* special_function */
83 "R_ARM_NONE", /* name */
84 FALSE, /* partial_inplace */
85 0, /* src_mask */
86 0, /* dst_mask */
87 FALSE), /* pcrel_offset */
88
89 HOWTO (R_ARM_PC24, /* type */
90 2, /* rightshift */
91 2, /* size (0 = byte, 1 = short, 2 = long) */
92 24, /* bitsize */
93 TRUE, /* pc_relative */
94 0, /* bitpos */
95 complain_overflow_signed,/* complain_on_overflow */
96 bfd_elf_generic_reloc, /* special_function */
97 "R_ARM_PC24", /* name */
98 FALSE, /* partial_inplace */
99 0x00ffffff, /* src_mask */
100 0x00ffffff, /* dst_mask */
101 TRUE), /* pcrel_offset */
102
103 /* 32 bit absolute */
104 HOWTO (R_ARM_ABS32, /* type */
105 0, /* rightshift */
106 2, /* size (0 = byte, 1 = short, 2 = long) */
107 32, /* bitsize */
108 FALSE, /* pc_relative */
109 0, /* bitpos */
110 complain_overflow_bitfield,/* complain_on_overflow */
111 bfd_elf_generic_reloc, /* special_function */
112 "R_ARM_ABS32", /* name */
113 FALSE, /* partial_inplace */
114 0xffffffff, /* src_mask */
115 0xffffffff, /* dst_mask */
116 FALSE), /* pcrel_offset */
117
118 /* standard 32bit pc-relative reloc */
119 HOWTO (R_ARM_REL32, /* type */
120 0, /* rightshift */
121 2, /* size (0 = byte, 1 = short, 2 = long) */
122 32, /* bitsize */
123 TRUE, /* pc_relative */
124 0, /* bitpos */
125 complain_overflow_bitfield,/* complain_on_overflow */
126 bfd_elf_generic_reloc, /* special_function */
127 "R_ARM_REL32", /* name */
128 FALSE, /* partial_inplace */
129 0xffffffff, /* src_mask */
130 0xffffffff, /* dst_mask */
131 TRUE), /* pcrel_offset */
132
c19d1205 133 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
4962c51a 134 HOWTO (R_ARM_LDR_PC_G0, /* type */
7f266840
DJ		 135 0, /* rightshift */
136 0, /* size (0 = byte, 1 = short, 2 = long) */
4962c51a
MS		 137 32, /* bitsize */
138 TRUE, /* pc_relative */
7f266840 139 0, /* bitpos */
4962c51a 140 complain_overflow_dont,/* complain_on_overflow */
7f266840 141 bfd_elf_generic_reloc, /* special_function */
4962c51a 142 "R_ARM_LDR_PC_G0", /* name */
7f266840 143 FALSE, /* partial_inplace */
4962c51a
MS		 144 0xffffffff, /* src_mask */
145 0xffffffff, /* dst_mask */
146 TRUE), /* pcrel_offset */
7f266840
DJ		 147
148 /* 16 bit absolute */
149 HOWTO (R_ARM_ABS16, /* type */
150 0, /* rightshift */
151 1, /* size (0 = byte, 1 = short, 2 = long) */
152 16, /* bitsize */
153 FALSE, /* pc_relative */
154 0, /* bitpos */
155 complain_overflow_bitfield,/* complain_on_overflow */
156 bfd_elf_generic_reloc, /* special_function */
157 "R_ARM_ABS16", /* name */
158 FALSE, /* partial_inplace */
159 0x0000ffff, /* src_mask */
160 0x0000ffff, /* dst_mask */
161 FALSE), /* pcrel_offset */
162
163 /* 12 bit absolute */
164 HOWTO (R_ARM_ABS12, /* type */
165 0, /* rightshift */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
167 12, /* bitsize */
168 FALSE, /* pc_relative */
169 0, /* bitpos */
170 complain_overflow_bitfield,/* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_ARM_ABS12", /* name */
173 FALSE, /* partial_inplace */
00a97672
RS		 174 0x00000fff, /* src_mask */
175 0x00000fff, /* dst_mask */
7f266840
DJ		 176 FALSE), /* pcrel_offset */
177
178 HOWTO (R_ARM_THM_ABS5, /* type */
179 6, /* rightshift */
180 1, /* size (0 = byte, 1 = short, 2 = long) */
181 5, /* bitsize */
182 FALSE, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_bitfield,/* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_ARM_THM_ABS5", /* name */
187 FALSE, /* partial_inplace */
188 0x000007e0, /* src_mask */
189 0x000007e0, /* dst_mask */
190 FALSE), /* pcrel_offset */
191
192 /* 8 bit absolute */
193 HOWTO (R_ARM_ABS8, /* type */
194 0, /* rightshift */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
196 8, /* bitsize */
197 FALSE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_bitfield,/* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_ARM_ABS8", /* name */
202 FALSE, /* partial_inplace */
203 0x000000ff, /* src_mask */
204 0x000000ff, /* dst_mask */
205 FALSE), /* pcrel_offset */
206
207 HOWTO (R_ARM_SBREL32, /* type */
208 0, /* rightshift */
209 2, /* size (0 = byte, 1 = short, 2 = long) */
210 32, /* bitsize */
211 FALSE, /* pc_relative */
212 0, /* bitpos */
213 complain_overflow_dont,/* complain_on_overflow */
214 bfd_elf_generic_reloc, /* special_function */
215 "R_ARM_SBREL32", /* name */
216 FALSE, /* partial_inplace */
217 0xffffffff, /* src_mask */
218 0xffffffff, /* dst_mask */
219 FALSE), /* pcrel_offset */
220
c19d1205 221 HOWTO (R_ARM_THM_CALL, /* type */
7f266840
DJ		 222 1, /* rightshift */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
e95de063 224 25, /* bitsize */
7f266840
DJ		 225 TRUE, /* pc_relative */
226 0, /* bitpos */
227 complain_overflow_signed,/* complain_on_overflow */
228 bfd_elf_generic_reloc, /* special_function */
c19d1205 229 "R_ARM_THM_CALL", /* name */
7f266840
DJ		 230 FALSE, /* partial_inplace */
231 0x07ff07ff, /* src_mask */
232 0x07ff07ff, /* dst_mask */
233 TRUE), /* pcrel_offset */
234
235 HOWTO (R_ARM_THM_PC8, /* type */
236 1, /* rightshift */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
238 8, /* bitsize */
239 TRUE, /* pc_relative */
240 0, /* bitpos */
241 complain_overflow_signed,/* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_ARM_THM_PC8", /* name */
244 FALSE, /* partial_inplace */
245 0x000000ff, /* src_mask */
246 0x000000ff, /* dst_mask */
247 TRUE), /* pcrel_offset */
248
c19d1205 249 HOWTO (R_ARM_BREL_ADJ, /* type */
7f266840
DJ		 250 1, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW		 252 32, /* bitsize */
253 FALSE, /* pc_relative */
7f266840
DJ		 254 0, /* bitpos */
255 complain_overflow_signed,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
c19d1205 257 "R_ARM_BREL_ADJ", /* name */
7f266840 258 FALSE, /* partial_inplace */
c19d1205
ZW		 259 0xffffffff, /* src_mask */
260 0xffffffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
7f266840
DJ		 262
263 HOWTO (R_ARM_SWI24, /* type */
264 0, /* rightshift */
265 0, /* size (0 = byte, 1 = short, 2 = long) */
266 0, /* bitsize */
267 FALSE, /* pc_relative */
268 0, /* bitpos */
269 complain_overflow_signed,/* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_ARM_SWI24", /* name */
272 FALSE, /* partial_inplace */
273 0x00000000, /* src_mask */
274 0x00000000, /* dst_mask */
275 FALSE), /* pcrel_offset */
276
277 HOWTO (R_ARM_THM_SWI8, /* type */
278 0, /* rightshift */
279 0, /* size (0 = byte, 1 = short, 2 = long) */
280 0, /* bitsize */
281 FALSE, /* pc_relative */
282 0, /* bitpos */
283 complain_overflow_signed,/* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_ARM_SWI8", /* name */
286 FALSE, /* partial_inplace */
287 0x00000000, /* src_mask */
288 0x00000000, /* dst_mask */
289 FALSE), /* pcrel_offset */
290
291 /* BLX instruction for the ARM. */
292 HOWTO (R_ARM_XPC25, /* type */
293 2, /* rightshift */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
295 25, /* bitsize */
296 TRUE, /* pc_relative */
297 0, /* bitpos */
298 complain_overflow_signed,/* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_ARM_XPC25", /* name */
301 FALSE, /* partial_inplace */
302 0x00ffffff, /* src_mask */
303 0x00ffffff, /* dst_mask */
304 TRUE), /* pcrel_offset */
305
306 /* BLX instruction for the Thumb. */
307 HOWTO (R_ARM_THM_XPC22, /* type */
308 2, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 22, /* bitsize */
311 TRUE, /* pc_relative */
312 0, /* bitpos */
313 complain_overflow_signed,/* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_ARM_THM_XPC22", /* name */
316 FALSE, /* partial_inplace */
317 0x07ff07ff, /* src_mask */
318 0x07ff07ff, /* dst_mask */
319 TRUE), /* pcrel_offset */
320
ba93b8ac 321 /* Dynamic TLS relocations. */
7f266840 322
ba93b8ac
DJ		 323 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
324 0, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 32, /* bitsize */
327 FALSE, /* pc_relative */
328 0, /* bitpos */
329 complain_overflow_bitfield,/* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_ARM_TLS_DTPMOD32", /* name */
332 TRUE, /* partial_inplace */
333 0xffffffff, /* src_mask */
334 0xffffffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
7f266840 336
ba93b8ac
DJ		 337 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
338 0, /* rightshift */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
340 32, /* bitsize */
341 FALSE, /* pc_relative */
342 0, /* bitpos */
343 complain_overflow_bitfield,/* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_ARM_TLS_DTPOFF32", /* name */
346 TRUE, /* partial_inplace */
347 0xffffffff, /* src_mask */
348 0xffffffff, /* dst_mask */
349 FALSE), /* pcrel_offset */
7f266840 350
ba93b8ac
DJ		 351 HOWTO (R_ARM_TLS_TPOFF32, /* type */
352 0, /* rightshift */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
354 32, /* bitsize */
355 FALSE, /* pc_relative */
356 0, /* bitpos */
357 complain_overflow_bitfield,/* complain_on_overflow */
358 bfd_elf_generic_reloc, /* special_function */
359 "R_ARM_TLS_TPOFF32", /* name */
360 TRUE, /* partial_inplace */
361 0xffffffff, /* src_mask */
362 0xffffffff, /* dst_mask */
363 FALSE), /* pcrel_offset */
7f266840
DJ		 364
365 /* Relocs used in ARM Linux */
366
367 HOWTO (R_ARM_COPY, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 32, /* bitsize */
371 FALSE, /* pc_relative */
372 0, /* bitpos */
373 complain_overflow_bitfield,/* complain_on_overflow */
374 bfd_elf_generic_reloc, /* special_function */
375 "R_ARM_COPY", /* name */
376 TRUE, /* partial_inplace */
377 0xffffffff, /* src_mask */
378 0xffffffff, /* dst_mask */
379 FALSE), /* pcrel_offset */
380
381 HOWTO (R_ARM_GLOB_DAT, /* type */
382 0, /* rightshift */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
384 32, /* bitsize */
385 FALSE, /* pc_relative */
386 0, /* bitpos */
387 complain_overflow_bitfield,/* complain_on_overflow */
388 bfd_elf_generic_reloc, /* special_function */
389 "R_ARM_GLOB_DAT", /* name */
390 TRUE, /* partial_inplace */
391 0xffffffff, /* src_mask */
392 0xffffffff, /* dst_mask */
393 FALSE), /* pcrel_offset */
394
395 HOWTO (R_ARM_JUMP_SLOT, /* type */
396 0, /* rightshift */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
398 32, /* bitsize */
399 FALSE, /* pc_relative */
400 0, /* bitpos */
401 complain_overflow_bitfield,/* complain_on_overflow */
402 bfd_elf_generic_reloc, /* special_function */
403 "R_ARM_JUMP_SLOT", /* name */
404 TRUE, /* partial_inplace */
405 0xffffffff, /* src_mask */
406 0xffffffff, /* dst_mask */
407 FALSE), /* pcrel_offset */
408
409 HOWTO (R_ARM_RELATIVE, /* type */
410 0, /* rightshift */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
412 32, /* bitsize */
413 FALSE, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_bitfield,/* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_ARM_RELATIVE", /* name */
418 TRUE, /* partial_inplace */
419 0xffffffff, /* src_mask */
420 0xffffffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
422
c19d1205 423 HOWTO (R_ARM_GOTOFF32, /* type */
7f266840
DJ		 424 0, /* rightshift */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
426 32, /* bitsize */
427 FALSE, /* pc_relative */
428 0, /* bitpos */
429 complain_overflow_bitfield,/* complain_on_overflow */
430 bfd_elf_generic_reloc, /* special_function */
c19d1205 431 "R_ARM_GOTOFF32", /* name */
7f266840
DJ		 432 TRUE, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE), /* pcrel_offset */
436
437 HOWTO (R_ARM_GOTPC, /* type */
438 0, /* rightshift */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
440 32, /* bitsize */
441 TRUE, /* pc_relative */
442 0, /* bitpos */
443 complain_overflow_bitfield,/* complain_on_overflow */
444 bfd_elf_generic_reloc, /* special_function */
445 "R_ARM_GOTPC", /* name */
446 TRUE, /* partial_inplace */
447 0xffffffff, /* src_mask */
448 0xffffffff, /* dst_mask */
449 TRUE), /* pcrel_offset */
450
451 HOWTO (R_ARM_GOT32, /* type */
452 0, /* rightshift */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
454 32, /* bitsize */
455 FALSE, /* pc_relative */
456 0, /* bitpos */
457 complain_overflow_bitfield,/* complain_on_overflow */
458 bfd_elf_generic_reloc, /* special_function */
459 "R_ARM_GOT32", /* name */
460 TRUE, /* partial_inplace */
461 0xffffffff, /* src_mask */
462 0xffffffff, /* dst_mask */
463 FALSE), /* pcrel_offset */
464
465 HOWTO (R_ARM_PLT32, /* type */
466 2, /* rightshift */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
ce490eda 468 24, /* bitsize */
7f266840
DJ		 469 TRUE, /* pc_relative */
470 0, /* bitpos */
471 complain_overflow_bitfield,/* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_ARM_PLT32", /* name */
ce490eda 474 FALSE, /* partial_inplace */
7f266840
DJ		 475 0x00ffffff, /* src_mask */
476 0x00ffffff, /* dst_mask */
477 TRUE), /* pcrel_offset */
478
479 HOWTO (R_ARM_CALL, /* type */
480 2, /* rightshift */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
482 24, /* bitsize */
483 TRUE, /* pc_relative */
484 0, /* bitpos */
485 complain_overflow_signed,/* complain_on_overflow */
486 bfd_elf_generic_reloc, /* special_function */
487 "R_ARM_CALL", /* name */
488 FALSE, /* partial_inplace */
489 0x00ffffff, /* src_mask */
490 0x00ffffff, /* dst_mask */
491 TRUE), /* pcrel_offset */
492
493 HOWTO (R_ARM_JUMP24, /* type */
494 2, /* rightshift */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
496 24, /* bitsize */
497 TRUE, /* pc_relative */
498 0, /* bitpos */
499 complain_overflow_signed,/* complain_on_overflow */
500 bfd_elf_generic_reloc, /* special_function */
501 "R_ARM_JUMP24", /* name */
502 FALSE, /* partial_inplace */
503 0x00ffffff, /* src_mask */
504 0x00ffffff, /* dst_mask */
505 TRUE), /* pcrel_offset */
506
c19d1205
ZW		 507 HOWTO (R_ARM_THM_JUMP24, /* type */
508 1, /* rightshift */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
510 24, /* bitsize */
511 TRUE, /* pc_relative */
7f266840 512 0, /* bitpos */
c19d1205 513 complain_overflow_signed,/* complain_on_overflow */
7f266840 514 bfd_elf_generic_reloc, /* special_function */
c19d1205 515 "R_ARM_THM_JUMP24", /* name */
7f266840 516 FALSE, /* partial_inplace */
c19d1205
ZW		 517 0x07ff2fff, /* src_mask */
518 0x07ff2fff, /* dst_mask */
519 TRUE), /* pcrel_offset */
7f266840 520
c19d1205 521 HOWTO (R_ARM_BASE_ABS, /* type */
7f266840 522 0, /* rightshift */
c19d1205
ZW		 523 2, /* size (0 = byte, 1 = short, 2 = long) */
524 32, /* bitsize */
7f266840
DJ		 525 FALSE, /* pc_relative */
526 0, /* bitpos */
527 complain_overflow_dont,/* complain_on_overflow */
528 bfd_elf_generic_reloc, /* special_function */
c19d1205 529 "R_ARM_BASE_ABS", /* name */
7f266840 530 FALSE, /* partial_inplace */
c19d1205
ZW		 531 0xffffffff, /* src_mask */
532 0xffffffff, /* dst_mask */
7f266840
DJ		 533 FALSE), /* pcrel_offset */
534
535 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
536 0, /* rightshift */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
538 12, /* bitsize */
539 TRUE, /* pc_relative */
540 0, /* bitpos */
541 complain_overflow_dont,/* complain_on_overflow */
542 bfd_elf_generic_reloc, /* special_function */
543 "R_ARM_ALU_PCREL_7_0", /* name */
544 FALSE, /* partial_inplace */
545 0x00000fff, /* src_mask */
546 0x00000fff, /* dst_mask */
547 TRUE), /* pcrel_offset */
548
549 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
550 0, /* rightshift */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
552 12, /* bitsize */
553 TRUE, /* pc_relative */
554 8, /* bitpos */
555 complain_overflow_dont,/* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_ARM_ALU_PCREL_15_8",/* name */
558 FALSE, /* partial_inplace */
559 0x00000fff, /* src_mask */
560 0x00000fff, /* dst_mask */
561 TRUE), /* pcrel_offset */
562
563 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
564 0, /* rightshift */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
566 12, /* bitsize */
567 TRUE, /* pc_relative */
568 16, /* bitpos */
569 complain_overflow_dont,/* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_ARM_ALU_PCREL_23_15",/* name */
572 FALSE, /* partial_inplace */
573 0x00000fff, /* src_mask */
574 0x00000fff, /* dst_mask */
575 TRUE), /* pcrel_offset */
576
577 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
578 0, /* rightshift */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
580 12, /* bitsize */
581 FALSE, /* pc_relative */
582 0, /* bitpos */
583 complain_overflow_dont,/* complain_on_overflow */
584 bfd_elf_generic_reloc, /* special_function */
585 "R_ARM_LDR_SBREL_11_0",/* name */
586 FALSE, /* partial_inplace */
587 0x00000fff, /* src_mask */
588 0x00000fff, /* dst_mask */
589 FALSE), /* pcrel_offset */
590
591 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
592 0, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 8, /* bitsize */
595 FALSE, /* pc_relative */
596 12, /* bitpos */
597 complain_overflow_dont,/* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
599 "R_ARM_ALU_SBREL_19_12",/* name */
600 FALSE, /* partial_inplace */
601 0x000ff000, /* src_mask */
602 0x000ff000, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
606 0, /* rightshift */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
608 8, /* bitsize */
609 FALSE, /* pc_relative */
610 20, /* bitpos */
611 complain_overflow_dont,/* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 "R_ARM_ALU_SBREL_27_20",/* name */
614 FALSE, /* partial_inplace */
615 0x0ff00000, /* src_mask */
616 0x0ff00000, /* dst_mask */
617 FALSE), /* pcrel_offset */
618
619 HOWTO (R_ARM_TARGET1, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
623 FALSE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_dont,/* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_ARM_TARGET1", /* name */
628 FALSE, /* partial_inplace */
629 0xffffffff, /* src_mask */
630 0xffffffff, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 HOWTO (R_ARM_ROSEGREL32, /* type */
634 0, /* rightshift */
635 2, /* size (0 = byte, 1 = short, 2 = long) */
636 32, /* bitsize */
637 FALSE, /* pc_relative */
638 0, /* bitpos */
639 complain_overflow_dont,/* complain_on_overflow */
640 bfd_elf_generic_reloc, /* special_function */
641 "R_ARM_ROSEGREL32", /* name */
642 FALSE, /* partial_inplace */
643 0xffffffff, /* src_mask */
644 0xffffffff, /* dst_mask */
645 FALSE), /* pcrel_offset */
646
647 HOWTO (R_ARM_V4BX, /* type */
648 0, /* rightshift */
649 2, /* size (0 = byte, 1 = short, 2 = long) */
650 32, /* bitsize */
651 FALSE, /* pc_relative */
652 0, /* bitpos */
653 complain_overflow_dont,/* complain_on_overflow */
654 bfd_elf_generic_reloc, /* special_function */
655 "R_ARM_V4BX", /* name */
656 FALSE, /* partial_inplace */
657 0xffffffff, /* src_mask */
658 0xffffffff, /* dst_mask */
659 FALSE), /* pcrel_offset */
660
661 HOWTO (R_ARM_TARGET2, /* type */
662 0, /* rightshift */
663 2, /* size (0 = byte, 1 = short, 2 = long) */
664 32, /* bitsize */
665 FALSE, /* pc_relative */
666 0, /* bitpos */
667 complain_overflow_signed,/* complain_on_overflow */
668 bfd_elf_generic_reloc, /* special_function */
669 "R_ARM_TARGET2", /* name */
670 FALSE, /* partial_inplace */
671 0xffffffff, /* src_mask */
672 0xffffffff, /* dst_mask */
673 TRUE), /* pcrel_offset */
674
675 HOWTO (R_ARM_PREL31, /* type */
676 0, /* rightshift */
677 2, /* size (0 = byte, 1 = short, 2 = long) */
678 31, /* bitsize */
679 TRUE, /* pc_relative */
680 0, /* bitpos */
681 complain_overflow_signed,/* complain_on_overflow */
682 bfd_elf_generic_reloc, /* special_function */
683 "R_ARM_PREL31", /* name */
684 FALSE, /* partial_inplace */
685 0x7fffffff, /* src_mask */
686 0x7fffffff, /* dst_mask */
687 TRUE), /* pcrel_offset */
c19d1205
ZW		 688
689 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
690 0, /* rightshift */
691 2, /* size (0 = byte, 1 = short, 2 = long) */
692 16, /* bitsize */
693 FALSE, /* pc_relative */
694 0, /* bitpos */
695 complain_overflow_dont,/* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_ARM_MOVW_ABS_NC", /* name */
698 FALSE, /* partial_inplace */
699 0x0000ffff, /* src_mask */
700 0x0000ffff, /* dst_mask */
701 FALSE), /* pcrel_offset */
702
703 HOWTO (R_ARM_MOVT_ABS, /* type */
704 0, /* rightshift */
705 2, /* size (0 = byte, 1 = short, 2 = long) */
706 16, /* bitsize */
707 FALSE, /* pc_relative */
708 0, /* bitpos */
709 complain_overflow_bitfield,/* complain_on_overflow */
710 bfd_elf_generic_reloc, /* special_function */
711 "R_ARM_MOVT_ABS", /* name */
712 FALSE, /* partial_inplace */
713 0x0000ffff, /* src_mask */
714 0x0000ffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
716
717 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 16, /* bitsize */
721 TRUE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_dont,/* complain_on_overflow */
724 bfd_elf_generic_reloc, /* special_function */
725 "R_ARM_MOVW_PREL_NC", /* name */
726 FALSE, /* partial_inplace */
727 0x0000ffff, /* src_mask */
728 0x0000ffff, /* dst_mask */
729 TRUE), /* pcrel_offset */
730
731 HOWTO (R_ARM_MOVT_PREL, /* type */
732 0, /* rightshift */
733 2, /* size (0 = byte, 1 = short, 2 = long) */
734 16, /* bitsize */
735 TRUE, /* pc_relative */
736 0, /* bitpos */
737 complain_overflow_bitfield,/* complain_on_overflow */
738 bfd_elf_generic_reloc, /* special_function */
739 "R_ARM_MOVT_PREL", /* name */
740 FALSE, /* partial_inplace */
741 0x0000ffff, /* src_mask */
742 0x0000ffff, /* dst_mask */
743 TRUE), /* pcrel_offset */
744
745 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
746 0, /* rightshift */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
748 16, /* bitsize */
749 FALSE, /* pc_relative */
750 0, /* bitpos */
751 complain_overflow_dont,/* complain_on_overflow */
752 bfd_elf_generic_reloc, /* special_function */
753 "R_ARM_THM_MOVW_ABS_NC",/* name */
754 FALSE, /* partial_inplace */
755 0x040f70ff, /* src_mask */
756 0x040f70ff, /* dst_mask */
757 FALSE), /* pcrel_offset */
758
759 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
760 0, /* rightshift */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_bitfield,/* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_ARM_THM_MOVT_ABS", /* name */
768 FALSE, /* partial_inplace */
769 0x040f70ff, /* src_mask */
770 0x040f70ff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 16, /* bitsize */
777 TRUE, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_dont,/* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_ARM_THM_MOVW_PREL_NC",/* name */
782 FALSE, /* partial_inplace */
783 0x040f70ff, /* src_mask */
784 0x040f70ff, /* dst_mask */
785 TRUE), /* pcrel_offset */
786
787 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
788 0, /* rightshift */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
790 16, /* bitsize */
791 TRUE, /* pc_relative */
792 0, /* bitpos */
793 complain_overflow_bitfield,/* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_ARM_THM_MOVT_PREL", /* name */
796 FALSE, /* partial_inplace */
797 0x040f70ff, /* src_mask */
798 0x040f70ff, /* dst_mask */
799 TRUE), /* pcrel_offset */
800
801 HOWTO (R_ARM_THM_JUMP19, /* type */
802 1, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 19, /* bitsize */
805 TRUE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_signed,/* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_ARM_THM_JUMP19", /* name */
810 FALSE, /* partial_inplace */
811 0x043f2fff, /* src_mask */
812 0x043f2fff, /* dst_mask */
813 TRUE), /* pcrel_offset */
814
815 HOWTO (R_ARM_THM_JUMP6, /* type */
816 1, /* rightshift */
817 1, /* size (0 = byte, 1 = short, 2 = long) */
818 6, /* bitsize */
819 TRUE, /* pc_relative */
820 0, /* bitpos */
821 complain_overflow_unsigned,/* complain_on_overflow */
822 bfd_elf_generic_reloc, /* special_function */
823 "R_ARM_THM_JUMP6", /* name */
824 FALSE, /* partial_inplace */
825 0x02f8, /* src_mask */
826 0x02f8, /* dst_mask */
827 TRUE), /* pcrel_offset */
828
829 /* These are declared as 13-bit signed relocations because we can
830 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
831 versa. */
832 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
833 0, /* rightshift */
834 2, /* size (0 = byte, 1 = short, 2 = long) */
835 13, /* bitsize */
836 TRUE, /* pc_relative */
837 0, /* bitpos */
2cab6cc3 838 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW		 839 bfd_elf_generic_reloc, /* special_function */
840 "R_ARM_THM_ALU_PREL_11_0",/* name */
841 FALSE, /* partial_inplace */
2cab6cc3
MS		 842 0xffffffff, /* src_mask */
843 0xffffffff, /* dst_mask */
c19d1205
ZW		 844 TRUE), /* pcrel_offset */
845
846 HOWTO (R_ARM_THM_PC12, /* type */
847 0, /* rightshift */
848 2, /* size (0 = byte, 1 = short, 2 = long) */
849 13, /* bitsize */
850 TRUE, /* pc_relative */
851 0, /* bitpos */
2cab6cc3 852 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW		 853 bfd_elf_generic_reloc, /* special_function */
854 "R_ARM_THM_PC12", /* name */
855 FALSE, /* partial_inplace */
2cab6cc3
MS		 856 0xffffffff, /* src_mask */
857 0xffffffff, /* dst_mask */
c19d1205
ZW		 858 TRUE), /* pcrel_offset */
859
860 HOWTO (R_ARM_ABS32_NOI, /* type */
861 0, /* rightshift */
862 2, /* size (0 = byte, 1 = short, 2 = long) */
863 32, /* bitsize */
864 FALSE, /* pc_relative */
865 0, /* bitpos */
866 complain_overflow_dont,/* complain_on_overflow */
867 bfd_elf_generic_reloc, /* special_function */
868 "R_ARM_ABS32_NOI", /* name */
869 FALSE, /* partial_inplace */
870 0xffffffff, /* src_mask */
871 0xffffffff, /* dst_mask */
872 FALSE), /* pcrel_offset */
873
874 HOWTO (R_ARM_REL32_NOI, /* type */
875 0, /* rightshift */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
877 32, /* bitsize */
878 TRUE, /* pc_relative */
879 0, /* bitpos */
880 complain_overflow_dont,/* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_ARM_REL32_NOI", /* name */
883 FALSE, /* partial_inplace */
884 0xffffffff, /* src_mask */
885 0xffffffff, /* dst_mask */
886 FALSE), /* pcrel_offset */
7f266840 887
4962c51a
MS		 888 /* Group relocations. */
889
890 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
891 0, /* rightshift */
892 2, /* size (0 = byte, 1 = short, 2 = long) */
893 32, /* bitsize */
894 TRUE, /* pc_relative */
895 0, /* bitpos */
896 complain_overflow_dont,/* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_ARM_ALU_PC_G0_NC", /* name */
899 FALSE, /* partial_inplace */
900 0xffffffff, /* src_mask */
901 0xffffffff, /* dst_mask */
902 TRUE), /* pcrel_offset */
903
904 HOWTO (R_ARM_ALU_PC_G0, /* type */
905 0, /* rightshift */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
907 32, /* bitsize */
908 TRUE, /* pc_relative */
909 0, /* bitpos */
910 complain_overflow_dont,/* complain_on_overflow */
911 bfd_elf_generic_reloc, /* special_function */
912 "R_ARM_ALU_PC_G0", /* name */
913 FALSE, /* partial_inplace */
914 0xffffffff, /* src_mask */
915 0xffffffff, /* dst_mask */
916 TRUE), /* pcrel_offset */
917
918 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
919 0, /* rightshift */
920 2, /* size (0 = byte, 1 = short, 2 = long) */
921 32, /* bitsize */
922 TRUE, /* pc_relative */
923 0, /* bitpos */
924 complain_overflow_dont,/* complain_on_overflow */
925 bfd_elf_generic_reloc, /* special_function */
926 "R_ARM_ALU_PC_G1_NC", /* name */
927 FALSE, /* partial_inplace */
928 0xffffffff, /* src_mask */
929 0xffffffff, /* dst_mask */
930 TRUE), /* pcrel_offset */
931
932 HOWTO (R_ARM_ALU_PC_G1, /* type */
933 0, /* rightshift */
934 2, /* size (0 = byte, 1 = short, 2 = long) */
935 32, /* bitsize */
936 TRUE, /* pc_relative */
937 0, /* bitpos */
938 complain_overflow_dont,/* complain_on_overflow */
939 bfd_elf_generic_reloc, /* special_function */
940 "R_ARM_ALU_PC_G1", /* name */
941 FALSE, /* partial_inplace */
942 0xffffffff, /* src_mask */
943 0xffffffff, /* dst_mask */
944 TRUE), /* pcrel_offset */
945
946 HOWTO (R_ARM_ALU_PC_G2, /* type */
947 0, /* rightshift */
948 2, /* size (0 = byte, 1 = short, 2 = long) */
949 32, /* bitsize */
950 TRUE, /* pc_relative */
951 0, /* bitpos */
952 complain_overflow_dont,/* complain_on_overflow */
953 bfd_elf_generic_reloc, /* special_function */
954 "R_ARM_ALU_PC_G2", /* name */
955 FALSE, /* partial_inplace */
956 0xffffffff, /* src_mask */
957 0xffffffff, /* dst_mask */
958 TRUE), /* pcrel_offset */
959
960 HOWTO (R_ARM_LDR_PC_G1, /* type */
961 0, /* rightshift */
962 2, /* size (0 = byte, 1 = short, 2 = long) */
963 32, /* bitsize */
964 TRUE, /* pc_relative */
965 0, /* bitpos */
966 complain_overflow_dont,/* complain_on_overflow */
967 bfd_elf_generic_reloc, /* special_function */
968 "R_ARM_LDR_PC_G1", /* name */
969 FALSE, /* partial_inplace */
970 0xffffffff, /* src_mask */
971 0xffffffff, /* dst_mask */
972 TRUE), /* pcrel_offset */
973
974 HOWTO (R_ARM_LDR_PC_G2, /* type */
975 0, /* rightshift */
976 2, /* size (0 = byte, 1 = short, 2 = long) */
977 32, /* bitsize */
978 TRUE, /* pc_relative */
979 0, /* bitpos */
980 complain_overflow_dont,/* complain_on_overflow */
981 bfd_elf_generic_reloc, /* special_function */
982 "R_ARM_LDR_PC_G2", /* name */
983 FALSE, /* partial_inplace */
984 0xffffffff, /* src_mask */
985 0xffffffff, /* dst_mask */
986 TRUE), /* pcrel_offset */
987
988 HOWTO (R_ARM_LDRS_PC_G0, /* type */
989 0, /* rightshift */
990 2, /* size (0 = byte, 1 = short, 2 = long) */
991 32, /* bitsize */
992 TRUE, /* pc_relative */
993 0, /* bitpos */
994 complain_overflow_dont,/* complain_on_overflow */
995 bfd_elf_generic_reloc, /* special_function */
996 "R_ARM_LDRS_PC_G0", /* name */
997 FALSE, /* partial_inplace */
998 0xffffffff, /* src_mask */
999 0xffffffff, /* dst_mask */
1000 TRUE), /* pcrel_offset */
1001
1002 HOWTO (R_ARM_LDRS_PC_G1, /* type */
1003 0, /* rightshift */
1004 2, /* size (0 = byte, 1 = short, 2 = long) */
1005 32, /* bitsize */
1006 TRUE, /* pc_relative */
1007 0, /* bitpos */
1008 complain_overflow_dont,/* complain_on_overflow */
1009 bfd_elf_generic_reloc, /* special_function */
1010 "R_ARM_LDRS_PC_G1", /* name */
1011 FALSE, /* partial_inplace */
1012 0xffffffff, /* src_mask */
1013 0xffffffff, /* dst_mask */
1014 TRUE), /* pcrel_offset */
1015
1016 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1017 0, /* rightshift */
1018 2, /* size (0 = byte, 1 = short, 2 = long) */
1019 32, /* bitsize */
1020 TRUE, /* pc_relative */
1021 0, /* bitpos */
1022 complain_overflow_dont,/* complain_on_overflow */
1023 bfd_elf_generic_reloc, /* special_function */
1024 "R_ARM_LDRS_PC_G2", /* name */
1025 FALSE, /* partial_inplace */
1026 0xffffffff, /* src_mask */
1027 0xffffffff, /* dst_mask */
1028 TRUE), /* pcrel_offset */
1029
1030 HOWTO (R_ARM_LDC_PC_G0, /* type */
1031 0, /* rightshift */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 32, /* bitsize */
1034 TRUE, /* pc_relative */
1035 0, /* bitpos */
1036 complain_overflow_dont,/* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_ARM_LDC_PC_G0", /* name */
1039 FALSE, /* partial_inplace */
1040 0xffffffff, /* src_mask */
1041 0xffffffff, /* dst_mask */
1042 TRUE), /* pcrel_offset */
1043
1044 HOWTO (R_ARM_LDC_PC_G1, /* type */
1045 0, /* rightshift */
1046 2, /* size (0 = byte, 1 = short, 2 = long) */
1047 32, /* bitsize */
1048 TRUE, /* pc_relative */
1049 0, /* bitpos */
1050 complain_overflow_dont,/* complain_on_overflow */
1051 bfd_elf_generic_reloc, /* special_function */
1052 "R_ARM_LDC_PC_G1", /* name */
1053 FALSE, /* partial_inplace */
1054 0xffffffff, /* src_mask */
1055 0xffffffff, /* dst_mask */
1056 TRUE), /* pcrel_offset */
1057
1058 HOWTO (R_ARM_LDC_PC_G2, /* type */
1059 0, /* rightshift */
1060 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 32, /* bitsize */
1062 TRUE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_dont,/* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_ARM_LDC_PC_G2", /* name */
1067 FALSE, /* partial_inplace */
1068 0xffffffff, /* src_mask */
1069 0xffffffff, /* dst_mask */
1070 TRUE), /* pcrel_offset */
1071
1072 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1073 0, /* rightshift */
1074 2, /* size (0 = byte, 1 = short, 2 = long) */
1075 32, /* bitsize */
1076 TRUE, /* pc_relative */
1077 0, /* bitpos */
1078 complain_overflow_dont,/* complain_on_overflow */
1079 bfd_elf_generic_reloc, /* special_function */
1080 "R_ARM_ALU_SB_G0_NC", /* name */
1081 FALSE, /* partial_inplace */
1082 0xffffffff, /* src_mask */
1083 0xffffffff, /* dst_mask */
1084 TRUE), /* pcrel_offset */
1085
1086 HOWTO (R_ARM_ALU_SB_G0, /* type */
1087 0, /* rightshift */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1089 32, /* bitsize */
1090 TRUE, /* pc_relative */
1091 0, /* bitpos */
1092 complain_overflow_dont,/* complain_on_overflow */
1093 bfd_elf_generic_reloc, /* special_function */
1094 "R_ARM_ALU_SB_G0", /* name */
1095 FALSE, /* partial_inplace */
1096 0xffffffff, /* src_mask */
1097 0xffffffff, /* dst_mask */
1098 TRUE), /* pcrel_offset */
1099
1100 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1101 0, /* rightshift */
1102 2, /* size (0 = byte, 1 = short, 2 = long) */
1103 32, /* bitsize */
1104 TRUE, /* pc_relative */
1105 0, /* bitpos */
1106 complain_overflow_dont,/* complain_on_overflow */
1107 bfd_elf_generic_reloc, /* special_function */
1108 "R_ARM_ALU_SB_G1_NC", /* name */
1109 FALSE, /* partial_inplace */
1110 0xffffffff, /* src_mask */
1111 0xffffffff, /* dst_mask */
1112 TRUE), /* pcrel_offset */
1113
1114 HOWTO (R_ARM_ALU_SB_G1, /* type */
1115 0, /* rightshift */
1116 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 32, /* bitsize */
1118 TRUE, /* pc_relative */
1119 0, /* bitpos */
1120 complain_overflow_dont,/* complain_on_overflow */
1121 bfd_elf_generic_reloc, /* special_function */
1122 "R_ARM_ALU_SB_G1", /* name */
1123 FALSE, /* partial_inplace */
1124 0xffffffff, /* src_mask */
1125 0xffffffff, /* dst_mask */
1126 TRUE), /* pcrel_offset */
1127
1128 HOWTO (R_ARM_ALU_SB_G2, /* type */
1129 0, /* rightshift */
1130 2, /* size (0 = byte, 1 = short, 2 = long) */
1131 32, /* bitsize */
1132 TRUE, /* pc_relative */
1133 0, /* bitpos */
1134 complain_overflow_dont,/* complain_on_overflow */
1135 bfd_elf_generic_reloc, /* special_function */
1136 "R_ARM_ALU_SB_G2", /* name */
1137 FALSE, /* partial_inplace */
1138 0xffffffff, /* src_mask */
1139 0xffffffff, /* dst_mask */
1140 TRUE), /* pcrel_offset */
1141
1142 HOWTO (R_ARM_LDR_SB_G0, /* type */
1143 0, /* rightshift */
1144 2, /* size (0 = byte, 1 = short, 2 = long) */
1145 32, /* bitsize */
1146 TRUE, /* pc_relative */
1147 0, /* bitpos */
1148 complain_overflow_dont,/* complain_on_overflow */
1149 bfd_elf_generic_reloc, /* special_function */
1150 "R_ARM_LDR_SB_G0", /* name */
1151 FALSE, /* partial_inplace */
1152 0xffffffff, /* src_mask */
1153 0xffffffff, /* dst_mask */
1154 TRUE), /* pcrel_offset */
1155
1156 HOWTO (R_ARM_LDR_SB_G1, /* type */
1157 0, /* rightshift */
1158 2, /* size (0 = byte, 1 = short, 2 = long) */
1159 32, /* bitsize */
1160 TRUE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont,/* complain_on_overflow */
1163 bfd_elf_generic_reloc, /* special_function */
1164 "R_ARM_LDR_SB_G1", /* name */
1165 FALSE, /* partial_inplace */
1166 0xffffffff, /* src_mask */
1167 0xffffffff, /* dst_mask */
1168 TRUE), /* pcrel_offset */
1169
1170 HOWTO (R_ARM_LDR_SB_G2, /* type */
1171 0, /* rightshift */
1172 2, /* size (0 = byte, 1 = short, 2 = long) */
1173 32, /* bitsize */
1174 TRUE, /* pc_relative */
1175 0, /* bitpos */
1176 complain_overflow_dont,/* complain_on_overflow */
1177 bfd_elf_generic_reloc, /* special_function */
1178 "R_ARM_LDR_SB_G2", /* name */
1179 FALSE, /* partial_inplace */
1180 0xffffffff, /* src_mask */
1181 0xffffffff, /* dst_mask */
1182 TRUE), /* pcrel_offset */
1183
1184 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1185 0, /* rightshift */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 32, /* bitsize */
1188 TRUE, /* pc_relative */
1189 0, /* bitpos */
1190 complain_overflow_dont,/* complain_on_overflow */
1191 bfd_elf_generic_reloc, /* special_function */
1192 "R_ARM_LDRS_SB_G0", /* name */
1193 FALSE, /* partial_inplace */
1194 0xffffffff, /* src_mask */
1195 0xffffffff, /* dst_mask */
1196 TRUE), /* pcrel_offset */
1197
1198 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1199 0, /* rightshift */
1200 2, /* size (0 = byte, 1 = short, 2 = long) */
1201 32, /* bitsize */
1202 TRUE, /* pc_relative */
1203 0, /* bitpos */
1204 complain_overflow_dont,/* complain_on_overflow */
1205 bfd_elf_generic_reloc, /* special_function */
1206 "R_ARM_LDRS_SB_G1", /* name */
1207 FALSE, /* partial_inplace */
1208 0xffffffff, /* src_mask */
1209 0xffffffff, /* dst_mask */
1210 TRUE), /* pcrel_offset */
1211
1212 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1213 0, /* rightshift */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1215 32, /* bitsize */
1216 TRUE, /* pc_relative */
1217 0, /* bitpos */
1218 complain_overflow_dont,/* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_ARM_LDRS_SB_G2", /* name */
1221 FALSE, /* partial_inplace */
1222 0xffffffff, /* src_mask */
1223 0xffffffff, /* dst_mask */
1224 TRUE), /* pcrel_offset */
1225
1226 HOWTO (R_ARM_LDC_SB_G0, /* type */
1227 0, /* rightshift */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 32, /* bitsize */
1230 TRUE, /* pc_relative */
1231 0, /* bitpos */
1232 complain_overflow_dont,/* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_ARM_LDC_SB_G0", /* name */
1235 FALSE, /* partial_inplace */
1236 0xffffffff, /* src_mask */
1237 0xffffffff, /* dst_mask */
1238 TRUE), /* pcrel_offset */
1239
1240 HOWTO (R_ARM_LDC_SB_G1, /* type */
1241 0, /* rightshift */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 32, /* bitsize */
1244 TRUE, /* pc_relative */
1245 0, /* bitpos */
1246 complain_overflow_dont,/* complain_on_overflow */
1247 bfd_elf_generic_reloc, /* special_function */
1248 "R_ARM_LDC_SB_G1", /* name */
1249 FALSE, /* partial_inplace */
1250 0xffffffff, /* src_mask */
1251 0xffffffff, /* dst_mask */
1252 TRUE), /* pcrel_offset */
1253
1254 HOWTO (R_ARM_LDC_SB_G2, /* type */
1255 0, /* rightshift */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 32, /* bitsize */
1258 TRUE, /* pc_relative */
1259 0, /* bitpos */
1260 complain_overflow_dont,/* complain_on_overflow */
1261 bfd_elf_generic_reloc, /* special_function */
1262 "R_ARM_LDC_SB_G2", /* name */
1263 FALSE, /* partial_inplace */
1264 0xffffffff, /* src_mask */
1265 0xffffffff, /* dst_mask */
1266 TRUE), /* pcrel_offset */
1267
1268 /* End of group relocations. */
c19d1205 1269
c19d1205
ZW		 1270 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1271 0, /* rightshift */
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 16, /* bitsize */
1274 FALSE, /* pc_relative */
1275 0, /* bitpos */
1276 complain_overflow_dont,/* complain_on_overflow */
1277 bfd_elf_generic_reloc, /* special_function */
1278 "R_ARM_MOVW_BREL_NC", /* name */
1279 FALSE, /* partial_inplace */
1280 0x0000ffff, /* src_mask */
1281 0x0000ffff, /* dst_mask */
1282 FALSE), /* pcrel_offset */
1283
1284 HOWTO (R_ARM_MOVT_BREL, /* type */
1285 0, /* rightshift */
1286 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 16, /* bitsize */
1288 FALSE, /* pc_relative */
1289 0, /* bitpos */
1290 complain_overflow_bitfield,/* complain_on_overflow */
1291 bfd_elf_generic_reloc, /* special_function */
1292 "R_ARM_MOVT_BREL", /* name */
1293 FALSE, /* partial_inplace */
1294 0x0000ffff, /* src_mask */
1295 0x0000ffff, /* dst_mask */
1296 FALSE), /* pcrel_offset */
1297
1298 HOWTO (R_ARM_MOVW_BREL, /* type */
1299 0, /* rightshift */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 16, /* bitsize */
1302 FALSE, /* pc_relative */
1303 0, /* bitpos */
1304 complain_overflow_dont,/* complain_on_overflow */
1305 bfd_elf_generic_reloc, /* special_function */
1306 "R_ARM_MOVW_BREL", /* name */
1307 FALSE, /* partial_inplace */
1308 0x0000ffff, /* src_mask */
1309 0x0000ffff, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1311
1312 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1313 0, /* rightshift */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 16, /* bitsize */
1316 FALSE, /* pc_relative */
1317 0, /* bitpos */
1318 complain_overflow_dont,/* complain_on_overflow */
1319 bfd_elf_generic_reloc, /* special_function */
1320 "R_ARM_THM_MOVW_BREL_NC",/* name */
1321 FALSE, /* partial_inplace */
1322 0x040f70ff, /* src_mask */
1323 0x040f70ff, /* dst_mask */
1324 FALSE), /* pcrel_offset */
1325
1326 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1327 0, /* rightshift */
1328 2, /* size (0 = byte, 1 = short, 2 = long) */
1329 16, /* bitsize */
1330 FALSE, /* pc_relative */
1331 0, /* bitpos */
1332 complain_overflow_bitfield,/* complain_on_overflow */
1333 bfd_elf_generic_reloc, /* special_function */
1334 "R_ARM_THM_MOVT_BREL", /* name */
1335 FALSE, /* partial_inplace */
1336 0x040f70ff, /* src_mask */
1337 0x040f70ff, /* dst_mask */
1338 FALSE), /* pcrel_offset */
1339
1340 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1341 0, /* rightshift */
1342 2, /* size (0 = byte, 1 = short, 2 = long) */
1343 16, /* bitsize */
1344 FALSE, /* pc_relative */
1345 0, /* bitpos */
1346 complain_overflow_dont,/* complain_on_overflow */
1347 bfd_elf_generic_reloc, /* special_function */
1348 "R_ARM_THM_MOVW_BREL", /* name */
1349 FALSE, /* partial_inplace */
1350 0x040f70ff, /* src_mask */
1351 0x040f70ff, /* dst_mask */
1352 FALSE), /* pcrel_offset */
1353
1354 EMPTY_HOWTO (90), /* unallocated */
1355 EMPTY_HOWTO (91),
1356 EMPTY_HOWTO (92),
1357 EMPTY_HOWTO (93),
1358
1359 HOWTO (R_ARM_PLT32_ABS, /* type */
1360 0, /* rightshift */
1361 2, /* size (0 = byte, 1 = short, 2 = long) */
1362 32, /* bitsize */
1363 FALSE, /* pc_relative */
1364 0, /* bitpos */
1365 complain_overflow_dont,/* complain_on_overflow */
1366 bfd_elf_generic_reloc, /* special_function */
1367 "R_ARM_PLT32_ABS", /* name */
1368 FALSE, /* partial_inplace */
1369 0xffffffff, /* src_mask */
1370 0xffffffff, /* dst_mask */
1371 FALSE), /* pcrel_offset */
1372
1373 HOWTO (R_ARM_GOT_ABS, /* type */
1374 0, /* rightshift */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1376 32, /* bitsize */
1377 FALSE, /* pc_relative */
1378 0, /* bitpos */
1379 complain_overflow_dont,/* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 "R_ARM_GOT_ABS", /* name */
1382 FALSE, /* partial_inplace */
1383 0xffffffff, /* src_mask */
1384 0xffffffff, /* dst_mask */
1385 FALSE), /* pcrel_offset */
1386
1387 HOWTO (R_ARM_GOT_PREL, /* type */
1388 0, /* rightshift */
1389 2, /* size (0 = byte, 1 = short, 2 = long) */
1390 32, /* bitsize */
1391 TRUE, /* pc_relative */
1392 0, /* bitpos */
1393 complain_overflow_dont, /* complain_on_overflow */
1394 bfd_elf_generic_reloc, /* special_function */
1395 "R_ARM_GOT_PREL", /* name */
1396 FALSE, /* partial_inplace */
1397 0xffffffff, /* src_mask */
1398 0xffffffff, /* dst_mask */
1399 TRUE), /* pcrel_offset */
1400
1401 HOWTO (R_ARM_GOT_BREL12, /* type */
1402 0, /* rightshift */
1403 2, /* size (0 = byte, 1 = short, 2 = long) */
1404 12, /* bitsize */
1405 FALSE, /* pc_relative */
1406 0, /* bitpos */
1407 complain_overflow_bitfield,/* complain_on_overflow */
1408 bfd_elf_generic_reloc, /* special_function */
1409 "R_ARM_GOT_BREL12", /* name */
1410 FALSE, /* partial_inplace */
1411 0x00000fff, /* src_mask */
1412 0x00000fff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1414
1415 HOWTO (R_ARM_GOTOFF12, /* type */
1416 0, /* rightshift */
1417 2, /* size (0 = byte, 1 = short, 2 = long) */
1418 12, /* bitsize */
1419 FALSE, /* pc_relative */
1420 0, /* bitpos */
1421 complain_overflow_bitfield,/* complain_on_overflow */
1422 bfd_elf_generic_reloc, /* special_function */
1423 "R_ARM_GOTOFF12", /* name */
1424 FALSE, /* partial_inplace */
1425 0x00000fff, /* src_mask */
1426 0x00000fff, /* dst_mask */
1427 FALSE), /* pcrel_offset */
1428
1429 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1430
1431 /* GNU extension to record C++ vtable member usage */
1432 HOWTO (R_ARM_GNU_VTENTRY, /* type */
ba93b8ac
DJ		 1433 0, /* rightshift */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1435 0, /* bitsize */
ba93b8ac
DJ		 1436 FALSE, /* pc_relative */
1437 0, /* bitpos */
c19d1205
ZW		 1438 complain_overflow_dont, /* complain_on_overflow */
1439 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1440 "R_ARM_GNU_VTENTRY", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 0, /* dst_mask */
1444 FALSE), /* pcrel_offset */
1445
1446 /* GNU extension to record C++ vtable hierarchy */
1447 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1448 0, /* rightshift */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 0, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 NULL, /* special_function */
1455 "R_ARM_GNU_VTINHERIT", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
1458 0, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460
1461 HOWTO (R_ARM_THM_JUMP11, /* type */
1462 1, /* rightshift */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1464 11, /* bitsize */
1465 TRUE, /* pc_relative */
1466 0, /* bitpos */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 bfd_elf_generic_reloc, /* special_function */
1469 "R_ARM_THM_JUMP11", /* name */
1470 FALSE, /* partial_inplace */
1471 0x000007ff, /* src_mask */
1472 0x000007ff, /* dst_mask */
1473 TRUE), /* pcrel_offset */
1474
1475 HOWTO (R_ARM_THM_JUMP8, /* type */
1476 1, /* rightshift */
1477 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 8, /* bitsize */
1479 TRUE, /* pc_relative */
1480 0, /* bitpos */
1481 complain_overflow_signed, /* complain_on_overflow */
1482 bfd_elf_generic_reloc, /* special_function */
1483 "R_ARM_THM_JUMP8", /* name */
1484 FALSE, /* partial_inplace */
1485 0x000000ff, /* src_mask */
1486 0x000000ff, /* dst_mask */
1487 TRUE), /* pcrel_offset */
ba93b8ac 1488
c19d1205
ZW		 1489 /* TLS relocations */
1490 HOWTO (R_ARM_TLS_GD32, /* type */
ba93b8ac
DJ		 1491 0, /* rightshift */
1492 2, /* size (0 = byte, 1 = short, 2 = long) */
1493 32, /* bitsize */
1494 FALSE, /* pc_relative */
1495 0, /* bitpos */
1496 complain_overflow_bitfield,/* complain_on_overflow */
c19d1205
ZW		 1497 NULL, /* special_function */
1498 "R_ARM_TLS_GD32", /* name */
ba93b8ac
DJ		 1499 TRUE, /* partial_inplace */
1500 0xffffffff, /* src_mask */
1501 0xffffffff, /* dst_mask */
c19d1205 1502 FALSE), /* pcrel_offset */
ba93b8ac 1503
ba93b8ac
DJ		 1504 HOWTO (R_ARM_TLS_LDM32, /* type */
1505 0, /* rightshift */
1506 2, /* size (0 = byte, 1 = short, 2 = long) */
1507 32, /* bitsize */
1508 FALSE, /* pc_relative */
1509 0, /* bitpos */
1510 complain_overflow_bitfield,/* complain_on_overflow */
1511 bfd_elf_generic_reloc, /* special_function */
1512 "R_ARM_TLS_LDM32", /* name */
1513 TRUE, /* partial_inplace */
1514 0xffffffff, /* src_mask */
1515 0xffffffff, /* dst_mask */
c19d1205 1516 FALSE), /* pcrel_offset */
ba93b8ac 1517
c19d1205 1518 HOWTO (R_ARM_TLS_LDO32, /* type */
ba93b8ac
DJ		 1519 0, /* rightshift */
1520 2, /* size (0 = byte, 1 = short, 2 = long) */
1521 32, /* bitsize */
1522 FALSE, /* pc_relative */
1523 0, /* bitpos */
1524 complain_overflow_bitfield,/* complain_on_overflow */
1525 bfd_elf_generic_reloc, /* special_function */
c19d1205 1526 "R_ARM_TLS_LDO32", /* name */
ba93b8ac
DJ		 1527 TRUE, /* partial_inplace */
1528 0xffffffff, /* src_mask */
1529 0xffffffff, /* dst_mask */
c19d1205 1530 FALSE), /* pcrel_offset */
ba93b8ac 1531
ba93b8ac
DJ		 1532 HOWTO (R_ARM_TLS_IE32, /* type */
1533 0, /* rightshift */
1534 2, /* size (0 = byte, 1 = short, 2 = long) */
1535 32, /* bitsize */
1536 FALSE, /* pc_relative */
1537 0, /* bitpos */
1538 complain_overflow_bitfield,/* complain_on_overflow */
1539 NULL, /* special_function */
1540 "R_ARM_TLS_IE32", /* name */
1541 TRUE, /* partial_inplace */
1542 0xffffffff, /* src_mask */
1543 0xffffffff, /* dst_mask */
c19d1205 1544 FALSE), /* pcrel_offset */
7f266840 1545
c19d1205 1546 HOWTO (R_ARM_TLS_LE32, /* type */
7f266840
DJ		 1547 0, /* rightshift */
1548 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1549 32, /* bitsize */
7f266840
DJ		 1550 FALSE, /* pc_relative */
1551 0, /* bitpos */
c19d1205
ZW		 1552 complain_overflow_bitfield,/* complain_on_overflow */
1553 bfd_elf_generic_reloc, /* special_function */
1554 "R_ARM_TLS_LE32", /* name */
1555 TRUE, /* partial_inplace */
1556 0xffffffff, /* src_mask */
1557 0xffffffff, /* dst_mask */
1558 FALSE), /* pcrel_offset */
7f266840 1559
c19d1205
ZW		 1560 HOWTO (R_ARM_TLS_LDO12, /* type */
1561 0, /* rightshift */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 12, /* bitsize */
1564 FALSE, /* pc_relative */
7f266840 1565 0, /* bitpos */
c19d1205 1566 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1567 bfd_elf_generic_reloc, /* special_function */
c19d1205 1568 "R_ARM_TLS_LDO12", /* name */
7f266840 1569 FALSE, /* partial_inplace */
c19d1205
ZW		 1570 0x00000fff, /* src_mask */
1571 0x00000fff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
7f266840 1573
c19d1205
ZW		 1574 HOWTO (R_ARM_TLS_LE12, /* type */
1575 0, /* rightshift */
1576 2, /* size (0 = byte, 1 = short, 2 = long) */
1577 12, /* bitsize */
1578 FALSE, /* pc_relative */
7f266840 1579 0, /* bitpos */
c19d1205 1580 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1581 bfd_elf_generic_reloc, /* special_function */
c19d1205 1582 "R_ARM_TLS_LE12", /* name */
7f266840 1583 FALSE, /* partial_inplace */
c19d1205
ZW		 1584 0x00000fff, /* src_mask */
1585 0x00000fff, /* dst_mask */
1586 FALSE), /* pcrel_offset */
7f266840 1587
c19d1205 1588 HOWTO (R_ARM_TLS_IE12GP, /* type */
7f266840
DJ		 1589 0, /* rightshift */
1590 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW		 1591 12, /* bitsize */
1592 FALSE, /* pc_relative */
7f266840 1593 0, /* bitpos */
c19d1205 1594 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1595 bfd_elf_generic_reloc, /* special_function */
c19d1205 1596 "R_ARM_TLS_IE12GP", /* name */
7f266840 1597 FALSE, /* partial_inplace */
c19d1205
ZW		 1598 0x00000fff, /* src_mask */
1599 0x00000fff, /* dst_mask */
1600 FALSE), /* pcrel_offset */
1601};
1602
1603/* 112-127 private relocations
1604 128 R_ARM_ME_TOO, obsolete
1605 129-255 unallocated in AAELF.
7f266840 1606
c19d1205
ZW		 1607 249-255 extended, currently unused, relocations: */
1608
4962c51a 1609static reloc_howto_type elf32_arm_howto_table_2[4] =
7f266840
DJ		 1610{
1611 HOWTO (R_ARM_RREL32, /* type */
1612 0, /* rightshift */
1613 0, /* size (0 = byte, 1 = short, 2 = long) */
1614 0, /* bitsize */
1615 FALSE, /* pc_relative */
1616 0, /* bitpos */
1617 complain_overflow_dont,/* complain_on_overflow */
1618 bfd_elf_generic_reloc, /* special_function */
1619 "R_ARM_RREL32", /* name */
1620 FALSE, /* partial_inplace */
1621 0, /* src_mask */
1622 0, /* dst_mask */
1623 FALSE), /* pcrel_offset */
1624
1625 HOWTO (R_ARM_RABS32, /* type */
1626 0, /* rightshift */
1627 0, /* size (0 = byte, 1 = short, 2 = long) */
1628 0, /* bitsize */
1629 FALSE, /* pc_relative */
1630 0, /* bitpos */
1631 complain_overflow_dont,/* complain_on_overflow */
1632 bfd_elf_generic_reloc, /* special_function */
1633 "R_ARM_RABS32", /* name */
1634 FALSE, /* partial_inplace */
1635 0, /* src_mask */
1636 0, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1638
1639 HOWTO (R_ARM_RPC24, /* type */
1640 0, /* rightshift */
1641 0, /* size (0 = byte, 1 = short, 2 = long) */
1642 0, /* bitsize */
1643 FALSE, /* pc_relative */
1644 0, /* bitpos */
1645 complain_overflow_dont,/* complain_on_overflow */
1646 bfd_elf_generic_reloc, /* special_function */
1647 "R_ARM_RPC24", /* name */
1648 FALSE, /* partial_inplace */
1649 0, /* src_mask */
1650 0, /* dst_mask */
1651 FALSE), /* pcrel_offset */
1652
1653 HOWTO (R_ARM_RBASE, /* type */
1654 0, /* rightshift */
1655 0, /* size (0 = byte, 1 = short, 2 = long) */
1656 0, /* bitsize */
1657 FALSE, /* pc_relative */
1658 0, /* bitpos */
1659 complain_overflow_dont,/* complain_on_overflow */
1660 bfd_elf_generic_reloc, /* special_function */
1661 "R_ARM_RBASE", /* name */
1662 FALSE, /* partial_inplace */
1663 0, /* src_mask */
1664 0, /* dst_mask */
1665 FALSE) /* pcrel_offset */
1666};
1667
1668static reloc_howto_type *
1669elf32_arm_howto_from_type (unsigned int r_type)
1670{
c19d1205
ZW		 1671 if (r_type < NUM_ELEM (elf32_arm_howto_table_1))
1672 return &elf32_arm_howto_table_1[r_type];
ba93b8ac 1673
c19d1205
ZW		 1674 if (r_type >= R_ARM_RREL32
1675 && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2))
4962c51a 1676 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
7f266840 1677
c19d1205 1678 return NULL;
7f266840
DJ		 1679}
1680
1681static void
1682elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1683 Elf_Internal_Rela * elf_reloc)
1684{
1685 unsigned int r_type;
1686
1687 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1688 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1689}
1690
1691struct elf32_arm_reloc_map
1692 {
1693 bfd_reloc_code_real_type bfd_reloc_val;
1694 unsigned char elf_reloc_val;
1695 };
1696
1697/* All entries in this list must also be present in elf32_arm_howto_table. */
1698static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1699 {
1700 {BFD_RELOC_NONE, R_ARM_NONE},
1701 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
39b41c9c
PB		 1702 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1703 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
7f266840
DJ		 1704 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1705 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1706 {BFD_RELOC_32, R_ARM_ABS32},
1707 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1708 {BFD_RELOC_8, R_ARM_ABS8},
1709 {BFD_RELOC_16, R_ARM_ABS16},
1710 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1711 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
c19d1205
ZW		 1712 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1717 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
7f266840
DJ		 1718 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1719 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1720 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
c19d1205 1721 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
7f266840
DJ		 1722 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1723 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1724 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1725 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1726 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1727 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1728 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
ba93b8ac
DJ		 1729 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1730 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1731 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1732 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1733 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1734 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1735 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1736 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1737 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1738 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
c19d1205
ZW		 1739 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1740 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
b6895b4f
PB		 1741 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1742 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1743 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1744 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1745 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1746 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1747 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1748 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
4962c51a
MS		 1749 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1750 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1751 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1752 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1753 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1754 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1755 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1756 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1757 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1758 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1759 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1760 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1761 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1762 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1763 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1764 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1765 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1766 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1767 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1768 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1769 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1770 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1771 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1772 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1773 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1774 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1775 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
845b51d6
PB		 1776 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
1777 {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
7f266840
DJ		 1778 };
1779
1780static reloc_howto_type *
f1c71a59
ZW		 1781elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1782 bfd_reloc_code_real_type code)
7f266840
DJ		 1783{
1784 unsigned int i;
c19d1205
ZW		 1785 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
1786 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1787 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
7f266840 1788
c19d1205 1789 return NULL;
7f266840
DJ		 1790}
1791
157090f7
AM		 1792static reloc_howto_type *
1793elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1794 const char *r_name)
1795{
1796 unsigned int i;
1797
1798 for (i = 0;
1799 i < (sizeof (elf32_arm_howto_table_1)
1800 / sizeof (elf32_arm_howto_table_1[0]));
1801 i++)
1802 if (elf32_arm_howto_table_1[i].name != NULL
1803 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1804 return &elf32_arm_howto_table_1[i];
1805
1806 for (i = 0;
1807 i < (sizeof (elf32_arm_howto_table_2)
1808 / sizeof (elf32_arm_howto_table_2[0]));
1809 i++)
1810 if (elf32_arm_howto_table_2[i].name != NULL
1811 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1812 return &elf32_arm_howto_table_2[i];
1813
1814 return NULL;
1815}
1816
7f266840
DJ		 1817/* Support for core dump NOTE sections */
1818static bfd_boolean
f1c71a59 1819elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ		 1820{
1821 int offset;
1822 size_t size;
1823
1824 switch (note->descsz)
1825 {
1826 default:
1827 return FALSE;
1828
1829 case 148: /* Linux/ARM 32-bit*/
1830 /* pr_cursig */
1831 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1832
1833 /* pr_pid */
1834 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1835
1836 /* pr_reg */
1837 offset = 72;
1838 size = 72;
1839
1840 break;
1841 }
1842
1843 /* Make a ".reg/999" section. */
1844 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1845 size, note->descpos + offset);
1846}
1847
1848static bfd_boolean
f1c71a59 1849elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ		 1850{
1851 switch (note->descsz)
1852 {
1853 default:
1854 return FALSE;
1855
1856 case 124: /* Linux/ARM elf_prpsinfo */
1857 elf_tdata (abfd)->core_program
1858 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1859 elf_tdata (abfd)->core_command
1860 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1861 }
1862
1863 /* Note that for some reason, a spurious space is tacked
1864 onto the end of the args in some (at least one anyway)
1865 implementations, so strip it off if it exists. */
1866
1867 {
1868 char *command = elf_tdata (abfd)->core_command;
1869 int n = strlen (command);
1870
1871 if (0 < n && command[n - 1] == ' ')
1872 command[n - 1] = '\0';
1873 }
1874
1875 return TRUE;
1876}
1877
1878#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1879#define TARGET_LITTLE_NAME "elf32-littlearm"
1880#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1881#define TARGET_BIG_NAME "elf32-bigarm"
1882
1883#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1884#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1885
252b5132
RH		 1886typedef unsigned long int insn32;
1887typedef unsigned short int insn16;
1888
3a4a14e9
PB		 1889/* In lieu of proper flags, assume all EABIv4 or later objects are
1890 interworkable. */
57e8b36a 1891#define INTERWORK_FLAG(abfd) \
3a4a14e9 1892 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
85a84e7a 1893 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
9b485d32 1894
252b5132
RH		 1895/* The linker script knows the section names for placement.
1896 The entry_names are used to do simple name mangling on the stubs.
1897 Given a function name, and its type, the stub can be found. The
9b485d32 1898 name can be changed. The only requirement is the %s be present. */
252b5132
RH		 1899#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1900#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1901
1902#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1903#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1904
c7b8f16e
JB		 1905#define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1906#define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1907
845b51d6
PB		 1908#define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1909#define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1910
252b5132
RH		 1911/* The name of the dynamic interpreter. This is put in the .interp
1912 section. */
1913#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1914
5e681ec4
PB		 1915#ifdef FOUR_WORD_PLT
1916
252b5132
RH		 1917/* The first entry in a procedure linkage table looks like
1918 this. It is set up so that any shared library function that is
59f2c4e7 1919 called before the relocation has been set up calls the dynamic
9b485d32 1920 linker first. */
e5a52504 1921static const bfd_vma elf32_arm_plt0_entry [] =
5e681ec4
PB		 1922 {
1923 0xe52de004, /* str lr, [sp, #-4]! */
1924 0xe59fe010, /* ldr lr, [pc, #16] */
1925 0xe08fe00e, /* add lr, pc, lr */
1926 0xe5bef008, /* ldr pc, [lr, #8]! */
1927 };
1928
1929/* Subsequent entries in a procedure linkage table look like
1930 this. */
e5a52504 1931static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1932 {
1933 0xe28fc600, /* add ip, pc, #NN */
1934 0xe28cca00, /* add ip, ip, #NN */
1935 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1936 0x00000000, /* unused */
1937 };
1938
1939#else
1940
5e681ec4
PB		 1941/* The first entry in a procedure linkage table looks like
1942 this. It is set up so that any shared library function that is
1943 called before the relocation has been set up calls the dynamic
1944 linker first. */
e5a52504 1945static const bfd_vma elf32_arm_plt0_entry [] =
917583ad 1946 {
5e681ec4
PB		 1947 0xe52de004, /* str lr, [sp, #-4]! */
1948 0xe59fe004, /* ldr lr, [pc, #4] */
1949 0xe08fe00e, /* add lr, pc, lr */
1950 0xe5bef008, /* ldr pc, [lr, #8]! */
1951 0x00000000, /* &GOT[0] - . */
917583ad 1952 };
252b5132
RH		 1953
1954/* Subsequent entries in a procedure linkage table look like
1955 this. */
e5a52504 1956static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1957 {
1958 0xe28fc600, /* add ip, pc, #0xNN00000 */
1959 0xe28cca00, /* add ip, ip, #0xNN000 */
1960 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1961 };
1962
1963#endif
252b5132 1964
00a97672
RS		 1965/* The format of the first entry in the procedure linkage table
1966 for a VxWorks executable. */
1967static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1968 {
1969 0xe52dc008, /* str ip,[sp,#-8]! */
1970 0xe59fc000, /* ldr ip,[pc] */
1971 0xe59cf008, /* ldr pc,[ip,#8] */
1972 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1973 };
1974
1975/* The format of subsequent entries in a VxWorks executable. */
1976static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1977 {
1978 0xe59fc000, /* ldr ip,[pc] */
1979 0xe59cf000, /* ldr pc,[ip] */
1980 0x00000000, /* .long @got */
1981 0xe59fc000, /* ldr ip,[pc] */
1982 0xea000000, /* b _PLT */
1983 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1984 };
1985
1986/* The format of entries in a VxWorks shared library. */
1987static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1988 {
1989 0xe59fc000, /* ldr ip,[pc] */
1990 0xe79cf009, /* ldr pc,[ip,r9] */
1991 0x00000000, /* .long @got */
1992 0xe59fc000, /* ldr ip,[pc] */
1993 0xe599f008, /* ldr pc,[r9,#8] */
1994 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1995 };
1996
b7693d02
DJ		 1997/* An initial stub used if the PLT entry is referenced from Thumb code. */
1998#define PLT_THUMB_STUB_SIZE 4
1999static const bfd_vma elf32_arm_plt_thumb_stub [] =
2000 {
2001 0x4778, /* bx pc */
2002 0x46c0 /* nop */
2003 };
2004
e5a52504
MM		 2005/* The entries in a PLT when using a DLL-based target with multiple
2006 address spaces. */
2007static const bfd_vma elf32_arm_symbian_plt_entry [] =
2008 {
83a358aa 2009 0xe51ff004, /* ldr pc, [pc, #-4] */
e5a52504
MM		 2010 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2011 };
2012
e489d0ae
PB		 2013/* Used to build a map of a section. This is required for mixed-endian
2014 code/data. */
2015
2016typedef struct elf32_elf_section_map
2017{
2018 bfd_vma vma;
2019 char type;
2020}
2021elf32_arm_section_map;
2022
c7b8f16e
JB		 2023/* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2024
2025typedef enum
2026{
2027 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2028 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2029 VFP11_ERRATUM_ARM_VENEER,
2030 VFP11_ERRATUM_THUMB_VENEER
2031}
2032elf32_vfp11_erratum_type;
2033
2034typedef struct elf32_vfp11_erratum_list
2035{
2036 struct elf32_vfp11_erratum_list *next;
2037 bfd_vma vma;
2038 union
2039 {
2040 struct
2041 {
2042 struct elf32_vfp11_erratum_list *veneer;
2043 unsigned int vfp_insn;
2044 } b;
2045 struct
2046 {
2047 struct elf32_vfp11_erratum_list *branch;
2048 unsigned int id;
2049 } v;
2050 } u;
2051 elf32_vfp11_erratum_type type;
2052}
2053elf32_vfp11_erratum_list;
2054
8e3de13a 2055typedef struct _arm_elf_section_data
e489d0ae
PB		 2056{
2057 struct bfd_elf_section_data elf;
8e3de13a 2058 unsigned int mapcount;
c7b8f16e 2059 unsigned int mapsize;
e489d0ae 2060 elf32_arm_section_map *map;
c7b8f16e
JB		 2061 unsigned int erratumcount;
2062 elf32_vfp11_erratum_list *erratumlist;
8e3de13a
NC		 2063}
2064_arm_elf_section_data;
e489d0ae
PB		 2065
2066#define elf32_arm_section_data(sec) \
8e3de13a 2067 ((_arm_elf_section_data *) elf_section_data (sec))
e489d0ae 2068
ba93b8ac
DJ		 2069/* The size of the thread control block. */
2070#define TCB_SIZE 8
2071
0ffa91dd 2072struct elf_arm_obj_tdata
ba93b8ac
DJ		 2073{
2074 struct elf_obj_tdata root;
2075
2076 /* tls_type for each local got entry. */
2077 char *local_got_tls_type;
ee065d83 2078
bf21ed78
MS		 2079 /* Zero to warn when linking objects with incompatible enum sizes. */
2080 int no_enum_size_warning;
ba93b8ac
DJ		 2081};
2082
0ffa91dd
NC		 2083#define elf_arm_tdata(bfd) \
2084 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
ba93b8ac 2085
0ffa91dd
NC		 2086#define elf32_arm_local_got_tls_type(bfd) \
2087 (elf_arm_tdata (bfd)->local_got_tls_type)
2088
2089#define is_arm_elf(bfd) \
2090 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2091 && elf_tdata (bfd) != NULL \
2092 && elf_object_id (bfd) == ARM_ELF_TDATA)
ba93b8ac
DJ		 2093
2094static bfd_boolean
2095elf32_arm_mkobject (bfd *abfd)
2096{
0ffa91dd
NC		 2097 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2098 ARM_ELF_TDATA);
ba93b8ac
DJ		 2099}
2100
252b5132
RH		 2101/* The ARM linker needs to keep track of the number of relocs that it
2102 decides to copy in check_relocs for each symbol. This is so that
2103 it can discard PC relative relocs if it doesn't need them when
2104 linking with -Bsymbolic. We store the information in a field
2105 extending the regular ELF linker hash table. */
2106
ba93b8ac
DJ		 2107/* This structure keeps track of the number of relocs we have copied
2108 for a given symbol. */
5e681ec4 2109struct elf32_arm_relocs_copied
917583ad
NC		 2110 {
2111 /* Next section. */
5e681ec4 2112 struct elf32_arm_relocs_copied * next;
917583ad
NC		 2113 /* A section in dynobj. */
2114 asection * section;
2115 /* Number of relocs copied in this section. */
2116 bfd_size_type count;
ba93b8ac
DJ		 2117 /* Number of PC-relative relocs copied in this section. */
2118 bfd_size_type pc_count;
917583ad 2119 };
252b5132 2120
ba93b8ac
DJ		 2121#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2122
ba96a88f 2123/* Arm ELF linker hash entry. */
252b5132 2124struct elf32_arm_link_hash_entry
917583ad
NC		 2125 {
2126 struct elf_link_hash_entry root;
252b5132 2127
917583ad 2128 /* Number of PC relative relocs copied for this symbol. */
5e681ec4 2129 struct elf32_arm_relocs_copied * relocs_copied;
b7693d02
DJ		 2130
2131 /* We reference count Thumb references to a PLT entry separately,
2132 so that we can emit the Thumb trampoline only if needed. */
2133 bfd_signed_vma plt_thumb_refcount;
2134
bd97cb95
DJ		 2135 /* Some references from Thumb code may be eliminated by BL->BLX
2136 conversion, so record them separately. */
2137 bfd_signed_vma plt_maybe_thumb_refcount;
2138
b7693d02
DJ		 2139 /* Since PLT entries have variable size if the Thumb prologue is
2140 used, we need to record the index into .got.plt instead of
2141 recomputing it from the PLT offset. */
2142 bfd_signed_vma plt_got_offset;
ba93b8ac
DJ		 2143
2144#define GOT_UNKNOWN 0
2145#define GOT_NORMAL 1
2146#define GOT_TLS_GD 2
2147#define GOT_TLS_IE 4
2148 unsigned char tls_type;
a4fd1a8e
PB		 2149
2150 /* The symbol marking the real symbol location for exported thumb
2151 symbols with Arm stubs. */
2152 struct elf_link_hash_entry *export_glue;
917583ad 2153 };
252b5132 2154
252b5132 2155/* Traverse an arm ELF linker hash table. */
252b5132
RH		 2156#define elf32_arm_link_hash_traverse(table, func, info) \
2157 (elf_link_hash_traverse \
2158 (&(table)->root, \
b7693d02 2159 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
252b5132
RH		 2160 (info)))
2161
2162/* Get the ARM elf linker hash table from a link_info structure. */
2163#define elf32_arm_hash_table(info) \
2164 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2165
9b485d32 2166/* ARM ELF linker hash table. */
252b5132 2167struct elf32_arm_link_hash_table
917583ad
NC		 2168 {
2169 /* The main hash table. */
2170 struct elf_link_hash_table root;
252b5132 2171
4cc11e76 2172 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
dc810e39 2173 bfd_size_type thumb_glue_size;
252b5132 2174
4cc11e76 2175 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
dc810e39 2176 bfd_size_type arm_glue_size;
252b5132 2177
845b51d6
PB		 2178 /* The size in bytes of section containing the ARMv4 BX veneers. */
2179 bfd_size_type bx_glue_size;
2180
2181 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2182 veneer has been populated. */
2183 bfd_vma bx_glue_offset[15];
2184
c7b8f16e
JB		 2185 /* The size in bytes of the section containing glue for VFP11 erratum
2186 veneers. */
2187 bfd_size_type vfp11_erratum_glue_size;
2188
4cc11e76 2189 /* An arbitrary input BFD chosen to hold the glue sections. */
917583ad 2190 bfd * bfd_of_glue_owner;
ba96a88f 2191
e489d0ae
PB		 2192 /* Nonzero to output a BE8 image. */
2193 int byteswap_code;
2194
9c504268 2195 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
87bc043a 2196 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
9c504268
PB		 2197 int target1_is_rel;
2198
eb043451
PB		 2199 /* The relocation to use for R_ARM_TARGET2 relocations. */
2200 int target2_reloc;
2201
845b51d6
PB		 2202 /* 0 = Ignore R_ARM_V4BX.
2203 1 = Convert BX to MOV PC.
2204 2 = Generate v4 interworing stubs. */
319850b4
JB		 2205 int fix_v4bx;
2206
33bfe774
JB		 2207 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2208 int use_blx;
2209
c7b8f16e
JB		 2210 /* What sort of code sequences we should look for which may trigger the
2211 VFP11 denorm erratum. */
2212 bfd_arm_vfp11_fix vfp11_fix;
2213
2214 /* Global counter for the number of fixes we have emitted. */
2215 int num_vfp11_fixes;
2216
27e55c4d
PB		 2217 /* Nonzero to force PIC branch veneers. */
2218 int pic_veneer;
2219
e5a52504
MM		 2220 /* The number of bytes in the initial entry in the PLT. */
2221 bfd_size_type plt_header_size;
2222
2223 /* The number of bytes in the subsequent PLT etries. */
2224 bfd_size_type plt_entry_size;
2225
00a97672
RS		 2226 /* True if the target system is VxWorks. */
2227 int vxworks_p;
2228
e5a52504
MM		 2229 /* True if the target system is Symbian OS. */
2230 int symbian_p;
2231
4e7fd91e
PB		 2232 /* True if the target uses REL relocations. */
2233 int use_rel;
2234
5e681ec4
PB		 2235 /* Short-cuts to get to dynamic linker sections. */
2236 asection *sgot;
2237 asection *sgotplt;
2238 asection *srelgot;
2239 asection *splt;
2240 asection *srelplt;
2241 asection *sdynbss;
2242 asection *srelbss;
2243
00a97672
RS		 2244 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2245 asection *srelplt2;
2246
ba93b8ac
DJ		 2247 /* Data for R_ARM_TLS_LDM32 relocations. */
2248 union {
2249 bfd_signed_vma refcount;
2250 bfd_vma offset;
2251 } tls_ldm_got;
2252
5e681ec4
PB		 2253 /* Small local sym to section mapping cache. */
2254 struct sym_sec_cache sym_sec;
b7693d02
DJ		 2255
2256 /* For convenience in allocate_dynrelocs. */
2257 bfd * obfd;
917583ad 2258 };
252b5132 2259
780a67af
NC		 2260/* Create an entry in an ARM ELF linker hash table. */
2261
2262static struct bfd_hash_entry *
57e8b36a
NC		 2263elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2264 struct bfd_hash_table * table,
2265 const char * string)
780a67af
NC		 2266{
2267 struct elf32_arm_link_hash_entry * ret =
2268 (struct elf32_arm_link_hash_entry *) entry;
2269
2270 /* Allocate the structure if it has not already been allocated by a
2271 subclass. */
2272 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
57e8b36a
NC		 2273 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2274 if (ret == NULL)
780a67af
NC		 2275 return (struct bfd_hash_entry *) ret;
2276
2277 /* Call the allocation method of the superclass. */
2278 ret = ((struct elf32_arm_link_hash_entry *)
2279 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2280 table, string));
57e8b36a 2281 if (ret != NULL)
b7693d02
DJ		 2282 {
2283 ret->relocs_copied = NULL;
ba93b8ac 2284 ret->tls_type = GOT_UNKNOWN;
b7693d02 2285 ret->plt_thumb_refcount = 0;
bd97cb95 2286 ret->plt_maybe_thumb_refcount = 0;
b7693d02 2287 ret->plt_got_offset = -1;
a4fd1a8e 2288 ret->export_glue = NULL;
b7693d02 2289 }
780a67af
NC		 2290
2291 return (struct bfd_hash_entry *) ret;
2292}
2293
00a97672
RS		 2294/* Return true if NAME is the name of the relocation section associated
2295 with S. */
2296
2297static bfd_boolean
2298reloc_section_p (struct elf32_arm_link_hash_table *htab,
2299 const char *name, asection *s)
2300{
2301 if (htab->use_rel)
0112cd26 2302 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
00a97672 2303 else
0112cd26 2304 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
00a97672
RS		 2305}
2306
2307/* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
5e681ec4
PB		 2308 shortcuts to them in our hash table. */
2309
2310static bfd_boolean
57e8b36a 2311create_got_section (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 2312{
2313 struct elf32_arm_link_hash_table *htab;
2314
e5a52504
MM		 2315 htab = elf32_arm_hash_table (info);
2316 /* BPABI objects never have a GOT, or associated sections. */
2317 if (htab->symbian_p)
2318 return TRUE;
2319
5e681ec4
PB		 2320 if (! _bfd_elf_create_got_section (dynobj, info))
2321 return FALSE;
2322
5e681ec4
PB		 2323 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2324 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2325 if (!htab->sgot || !htab->sgotplt)
2326 abort ();
2327
00a97672
RS		 2328 htab->srelgot = bfd_make_section_with_flags (dynobj,
2329 RELOC_SECTION (htab, ".got"),
3496cb2a
L		 2330 (SEC_ALLOC | SEC_LOAD
2331 | SEC_HAS_CONTENTS
2332 | SEC_IN_MEMORY
2333 | SEC_LINKER_CREATED
2334 | SEC_READONLY));
5e681ec4 2335 if (htab->srelgot == NULL
5e681ec4
PB		 2336 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2337 return FALSE;
2338 return TRUE;
2339}
2340
00a97672
RS		 2341/* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2342 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
5e681ec4
PB		 2343 hash table. */
2344
2345static bfd_boolean
57e8b36a 2346elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 2347{
2348 struct elf32_arm_link_hash_table *htab;
2349
2350 htab = elf32_arm_hash_table (info);
2351 if (!htab->sgot && !create_got_section (dynobj, info))
2352 return FALSE;
2353
2354 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2355 return FALSE;
2356
2357 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672
RS		 2358 htab->srelplt = bfd_get_section_by_name (dynobj,
2359 RELOC_SECTION (htab, ".plt"));
5e681ec4
PB		 2360 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2361 if (!info->shared)
00a97672
RS		 2362 htab->srelbss = bfd_get_section_by_name (dynobj,
2363 RELOC_SECTION (htab, ".bss"));
2364
2365 if (htab->vxworks_p)
2366 {
2367 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2368 return FALSE;
2369
2370 if (info->shared)
2371 {
2372 htab->plt_header_size = 0;
2373 htab->plt_entry_size
2374 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2375 }
2376 else
2377 {
2378 htab->plt_header_size
2379 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2380 htab->plt_entry_size
2381 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2382 }
2383 }
5e681ec4 2384
e5a52504
MM		 2385 if (!htab->splt
2386 || !htab->srelplt
2387 || !htab->sdynbss
5e681ec4
PB		 2388 || (!info->shared && !htab->srelbss))
2389 abort ();
2390
2391 return TRUE;
2392}
2393
2394/* Copy the extra info we tack onto an elf_link_hash_entry. */
2395
2396static void
fcfa13d2 2397elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
5e681ec4
PB		 2398 struct elf_link_hash_entry *dir,
2399 struct elf_link_hash_entry *ind)
2400{
2401 struct elf32_arm_link_hash_entry *edir, *eind;
2402
2403 edir = (struct elf32_arm_link_hash_entry *) dir;
2404 eind = (struct elf32_arm_link_hash_entry *) ind;
2405
2406 if (eind->relocs_copied != NULL)
2407 {
2408 if (edir->relocs_copied != NULL)
2409 {
2410 struct elf32_arm_relocs_copied **pp;
2411 struct elf32_arm_relocs_copied *p;
2412
fcfa13d2 2413 /* Add reloc counts against the indirect sym to the direct sym
5e681ec4
PB		 2414 list. Merge any entries against the same section. */
2415 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2416 {
2417 struct elf32_arm_relocs_copied *q;
2418
2419 for (q = edir->relocs_copied; q != NULL; q = q->next)
2420 if (q->section == p->section)
2421 {
ba93b8ac 2422 q->pc_count += p->pc_count;
5e681ec4
PB		 2423 q->count += p->count;
2424 *pp = p->next;
2425 break;
2426 }
2427 if (q == NULL)
2428 pp = &p->next;
2429 }
2430 *pp = edir->relocs_copied;
2431 }
2432
2433 edir->relocs_copied = eind->relocs_copied;
2434 eind->relocs_copied = NULL;
2435 }
2436
b34b2d70 2437 if (ind->root.type == bfd_link_hash_indirect)
ba93b8ac 2438 {
b34b2d70
DJ		 2439 /* Copy over PLT info. */
2440 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2441 eind->plt_thumb_refcount = 0;
bd97cb95
DJ		 2442 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2443 eind->plt_maybe_thumb_refcount = 0;
b34b2d70
DJ		 2444
2445 if (dir->got.refcount <= 0)
2446 {
2447 edir->tls_type = eind->tls_type;
2448 eind->tls_type = GOT_UNKNOWN;
2449 }
ba93b8ac
DJ		 2450 }
2451
fcfa13d2 2452 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5e681ec4
PB		 2453}
2454
9b485d32 2455/* Create an ARM elf linker hash table. */
252b5132
RH		 2456
2457static struct bfd_link_hash_table *
57e8b36a 2458elf32_arm_link_hash_table_create (bfd *abfd)
252b5132
RH		 2459{
2460 struct elf32_arm_link_hash_table *ret;
dc810e39 2461 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
252b5132 2462
57e8b36a
NC		 2463 ret = bfd_malloc (amt);
2464 if (ret == NULL)
252b5132
RH		 2465 return NULL;
2466
57e8b36a 2467 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
66eb6687
AM		 2468 elf32_arm_link_hash_newfunc,
2469 sizeof (struct elf32_arm_link_hash_entry)))
252b5132 2470 {
e2d34d7d 2471 free (ret);
252b5132
RH		 2472 return NULL;
2473 }
2474
5e681ec4
PB		 2475 ret->sgot = NULL;
2476 ret->sgotplt = NULL;
2477 ret->srelgot = NULL;
2478 ret->splt = NULL;
2479 ret->srelplt = NULL;
2480 ret->sdynbss = NULL;
2481 ret->srelbss = NULL;
00a97672 2482 ret->srelplt2 = NULL;
252b5132
RH		 2483 ret->thumb_glue_size = 0;
2484 ret->arm_glue_size = 0;
845b51d6
PB		 2485 ret->bx_glue_size = 0;
2486 memset (ret->bx_glue_offset, 0, sizeof(ret->bx_glue_offset));
c7b8f16e
JB		 2487 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2488 ret->vfp11_erratum_glue_size = 0;
2489 ret->num_vfp11_fixes = 0;
252b5132 2490 ret->bfd_of_glue_owner = NULL;
e489d0ae 2491 ret->byteswap_code = 0;
9c504268 2492 ret->target1_is_rel = 0;
eb043451 2493 ret->target2_reloc = R_ARM_NONE;
e5a52504
MM		 2494#ifdef FOUR_WORD_PLT
2495 ret->plt_header_size = 16;
2496 ret->plt_entry_size = 16;
2497#else
2498 ret->plt_header_size = 20;
2499 ret->plt_entry_size = 12;
2500#endif
33bfe774
JB		 2501 ret->fix_v4bx = 0;
2502 ret->use_blx = 0;
00a97672 2503 ret->vxworks_p = 0;
e5a52504 2504 ret->symbian_p = 0;
4e7fd91e 2505 ret->use_rel = 1;
5e681ec4 2506 ret->sym_sec.abfd = NULL;
b7693d02 2507 ret->obfd = abfd;
ba93b8ac 2508 ret->tls_ldm_got.refcount = 0;
252b5132
RH		 2509
2510 return &ret->root.root;
2511}
2512
9b485d32
NC		 2513/* Locate the Thumb encoded calling stub for NAME. */
2514
252b5132 2515static struct elf_link_hash_entry *
57e8b36a
NC		 2516find_thumb_glue (struct bfd_link_info *link_info,
2517 const char *name,
f2a9dd69 2518 char **error_message)
252b5132
RH		 2519{
2520 char *tmp_name;
2521 struct elf_link_hash_entry *hash;
2522 struct elf32_arm_link_hash_table *hash_table;
2523
2524 /* We need a pointer to the armelf specific hash table. */
2525 hash_table = elf32_arm_hash_table (link_info);
2526
57e8b36a
NC		 2527 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2528 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2529
2530 BFD_ASSERT (tmp_name);
2531
2532 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2533
2534 hash = elf_link_hash_lookup
b34976b6 2535 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 2536
b1657152
AM		 2537 if (hash == NULL
2538 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
2539 tmp_name, name) == -1)
2540 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH		 2541
2542 free (tmp_name);
2543
2544 return hash;
2545}
2546
9b485d32
NC		 2547/* Locate the ARM encoded calling stub for NAME. */
2548
252b5132 2549static struct elf_link_hash_entry *
57e8b36a
NC		 2550find_arm_glue (struct bfd_link_info *link_info,
2551 const char *name,
f2a9dd69 2552 char **error_message)
252b5132
RH		 2553{
2554 char *tmp_name;
2555 struct elf_link_hash_entry *myh;
2556 struct elf32_arm_link_hash_table *hash_table;
2557
2558 /* We need a pointer to the elfarm specific hash table. */
2559 hash_table = elf32_arm_hash_table (link_info);
2560
57e8b36a
NC		 2561 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2562 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2563
2564 BFD_ASSERT (tmp_name);
2565
2566 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2567
2568 myh = elf_link_hash_lookup
b34976b6 2569 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 2570
b1657152
AM		 2571 if (myh == NULL
2572 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
2573 tmp_name, name) == -1)
2574 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH		 2575
2576 free (tmp_name);
2577
2578 return myh;
2579}
2580
8f6277f5 2581/* ARM->Thumb glue (static images):
252b5132
RH		 2582
2583 .arm
2584 __func_from_arm:
2585 ldr r12, __func_addr
2586 bx r12
2587 __func_addr:
8f6277f5 2588 .word func @ behave as if you saw a ARM_32 reloc.
252b5132 2589
26079076
PB		 2590 (v5t static images)
2591 .arm
2592 __func_from_arm:
2593 ldr pc, __func_addr
2594 __func_addr:
2595 .word func @ behave as if you saw a ARM_32 reloc.
2596
8f6277f5
PB		 2597 (relocatable images)
2598 .arm
2599 __func_from_arm:
2600 ldr r12, __func_offset
2601 add r12, r12, pc
2602 bx r12
2603 __func_offset:
2604 .word func - .
2605 */
2606
2607#define ARM2THUMB_STATIC_GLUE_SIZE 12
252b5132
RH		 2608static const insn32 a2t1_ldr_insn = 0xe59fc000;
2609static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
2610static const insn32 a2t3_func_addr_insn = 0x00000001;
2611
26079076
PB		 2612#define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
2613static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
2614static const insn32 a2t2v5_func_addr_insn = 0x00000001;
2615
8f6277f5
PB		 2616#define ARM2THUMB_PIC_GLUE_SIZE 16
2617static const insn32 a2t1p_ldr_insn = 0xe59fc004;
2618static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
2619static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
2620
9b485d32 2621/* Thumb->ARM: Thumb->(non-interworking aware) ARM
252b5132
RH		 2622
2623 .thumb .thumb
2624 .align 2 .align 2
2625 __func_from_thumb: __func_from_thumb:
2626 bx pc push {r6, lr}
2627 nop ldr r6, __func_addr
2628 .arm mov lr, pc
2629 __func_change_to_arm: bx r6
2630 b func .arm
2631 __func_back_to_thumb:
2632 ldmia r13! {r6, lr}
2633 bx lr
2634 __func_addr:
9b485d32 2635 .word func */
252b5132
RH		 2636
2637#define THUMB2ARM_GLUE_SIZE 8
2638static const insn16 t2a1_bx_pc_insn = 0x4778;
2639static const insn16 t2a2_noop_insn = 0x46c0;
2640static const insn32 t2a3_b_insn = 0xea000000;
2641
c7b8f16e
JB		 2642#define VFP11_ERRATUM_VENEER_SIZE 8
2643
845b51d6
PB		 2644#define ARM_BX_VENEER_SIZE 12
2645static const insn32 armbx1_tst_insn = 0xe3100001;
2646static const insn32 armbx2_moveq_insn = 0x01a0f000;
2647static const insn32 armbx3_bx_insn = 0xe12fff10;
2648
7e392df6 2649#ifndef ELFARM_NABI_C_INCLUDED
b34976b6 2650bfd_boolean
57e8b36a 2651bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
252b5132
RH		 2652{
2653 asection * s;
2654 bfd_byte * foo;
2655 struct elf32_arm_link_hash_table * globals;
2656
2657 globals = elf32_arm_hash_table (info);
2658
2659 BFD_ASSERT (globals != NULL);
2660
2661 if (globals->arm_glue_size != 0)
2662 {
2663 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2664
dc810e39
AM		 2665 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2666 ARM2THUMB_GLUE_SECTION_NAME);
252b5132
RH		 2667
2668 BFD_ASSERT (s != NULL);
2669
57e8b36a 2670 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
252b5132 2671
2f475487 2672 BFD_ASSERT (s->size == globals->arm_glue_size);
252b5132
RH		 2673 s->contents = foo;
2674 }
2675
2676 if (globals->thumb_glue_size != 0)
2677 {
2678 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2679
2680 s = bfd_get_section_by_name
2681 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2682
2683 BFD_ASSERT (s != NULL);
2684
57e8b36a 2685 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
252b5132 2686
2f475487 2687 BFD_ASSERT (s->size == globals->thumb_glue_size);
252b5132
RH		 2688 s->contents = foo;
2689 }
c7b8f16e
JB		 2690
2691 if (globals->vfp11_erratum_glue_size != 0)
2692 {
2693 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2694
2695 s = bfd_get_section_by_name
2696 (globals->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2697
2698 BFD_ASSERT (s != NULL);
2699
2700 foo = bfd_alloc (globals->bfd_of_glue_owner,
2701 globals->vfp11_erratum_glue_size);
2702
2703 BFD_ASSERT (s->size == globals->vfp11_erratum_glue_size);
2704 s->contents = foo;
2705 }
252b5132 2706
845b51d6
PB		 2707 if (globals->bx_glue_size != 0)
2708 {
2709 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2710
2711 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2712 ARM_BX_GLUE_SECTION_NAME);
2713
2714 BFD_ASSERT (s != NULL);
2715
2716 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->bx_glue_size);
2717
2718 BFD_ASSERT (s->size == globals->bx_glue_size);
2719 s->contents = foo;
2720 }
2721
b34976b6 2722 return TRUE;
252b5132
RH		 2723}
2724
a4fd1a8e
PB		 2725/* Allocate space and symbols for calling a Thumb function from Arm mode.
2726 returns the symbol identifying teh stub. */
2727static struct elf_link_hash_entry *
57e8b36a
NC		 2728record_arm_to_thumb_glue (struct bfd_link_info * link_info,
2729 struct elf_link_hash_entry * h)
252b5132
RH		 2730{
2731 const char * name = h->root.root.string;
63b0f745 2732 asection * s;
252b5132
RH		 2733 char * tmp_name;
2734 struct elf_link_hash_entry * myh;
14a793b2 2735 struct bfd_link_hash_entry * bh;
252b5132 2736 struct elf32_arm_link_hash_table * globals;
dc810e39 2737 bfd_vma val;
2f475487 2738 bfd_size_type size;
252b5132
RH		 2739
2740 globals = elf32_arm_hash_table (link_info);
2741
2742 BFD_ASSERT (globals != NULL);
2743 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2744
2745 s = bfd_get_section_by_name
2746 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
2747
252b5132
RH		 2748 BFD_ASSERT (s != NULL);
2749
57e8b36a 2750 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2751
2752 BFD_ASSERT (tmp_name);
2753
2754 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2755
2756 myh = elf_link_hash_lookup
b34976b6 2757 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 2758
2759 if (myh != NULL)
2760 {
9b485d32 2761 /* We've already seen this guy. */
252b5132 2762 free (tmp_name);
a4fd1a8e 2763 return myh;
252b5132
RH		 2764 }
2765
57e8b36a
NC		 2766 /* The only trick here is using hash_table->arm_glue_size as the value.
2767 Even though the section isn't allocated yet, this is where we will be
2768 putting it. */
14a793b2 2769 bh = NULL;
dc810e39
AM		 2770 val = globals->arm_glue_size + 1;
2771 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2772 tmp_name, BSF_GLOBAL, s, val,
b34976b6 2773 NULL, TRUE, FALSE, &bh);
252b5132 2774
b7693d02
DJ		 2775 myh = (struct elf_link_hash_entry *) bh;
2776 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2777 myh->forced_local = 1;
2778
252b5132
RH		 2779 free (tmp_name);
2780
27e55c4d
PB		 2781 if (link_info->shared || globals->root.is_relocatable_executable
2782 || globals->pic_veneer)
2f475487 2783 size = ARM2THUMB_PIC_GLUE_SIZE;
26079076
PB		 2784 else if (globals->use_blx)
2785 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
8f6277f5 2786 else
2f475487
AM		 2787 size = ARM2THUMB_STATIC_GLUE_SIZE;
2788
2789 s->size += size;
2790 globals->arm_glue_size += size;
252b5132 2791
a4fd1a8e 2792 return myh;
252b5132
RH		 2793}
2794
2795static void
57e8b36a
NC		 2796record_thumb_to_arm_glue (struct bfd_link_info *link_info,
2797 struct elf_link_hash_entry *h)
252b5132
RH		 2798{
2799 const char *name = h->root.root.string;
63b0f745 2800 asection *s;
252b5132
RH		 2801 char *tmp_name;
2802 struct elf_link_hash_entry *myh;
14a793b2 2803 struct bfd_link_hash_entry *bh;
252b5132 2804 struct elf32_arm_link_hash_table *hash_table;
dc810e39 2805 bfd_vma val;
252b5132
RH		 2806
2807 hash_table = elf32_arm_hash_table (link_info);
2808
2809 BFD_ASSERT (hash_table != NULL);
2810 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2811
2812 s = bfd_get_section_by_name
2813 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2814
2815 BFD_ASSERT (s != NULL);
2816
57e8b36a
NC		 2817 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2818 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2819
2820 BFD_ASSERT (tmp_name);
2821
2822 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2823
2824 myh = elf_link_hash_lookup
b34976b6 2825 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 2826
2827 if (myh != NULL)
2828 {
9b485d32 2829 /* We've already seen this guy. */
252b5132 2830 free (tmp_name);
9b485d32 2831 return;
252b5132
RH		 2832 }
2833
14a793b2 2834 bh = NULL;
dc810e39
AM		 2835 val = hash_table->thumb_glue_size + 1;
2836 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2837 tmp_name, BSF_GLOBAL, s, val,
b34976b6 2838 NULL, TRUE, FALSE, &bh);
252b5132 2839
9b485d32 2840 /* If we mark it 'Thumb', the disassembler will do a better job. */
14a793b2 2841 myh = (struct elf_link_hash_entry *) bh;
b7693d02
DJ		 2842 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
2843 myh->forced_local = 1;
252b5132
RH		 2844
2845 free (tmp_name);
2846
252b5132
RH		 2847#define CHANGE_TO_ARM "__%s_change_to_arm"
2848#define BACK_FROM_ARM "__%s_back_from_arm"
2849
9b485d32 2850 /* Allocate another symbol to mark where we switch to Arm mode. */
57e8b36a
NC		 2851 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2852 + strlen (CHANGE_TO_ARM) + 1);
252b5132
RH		 2853
2854 BFD_ASSERT (tmp_name);
2855
2856 sprintf (tmp_name, CHANGE_TO_ARM, name);
2857
14a793b2 2858 bh = NULL;
dc810e39
AM		 2859 val = hash_table->thumb_glue_size + 4,
2860 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2861 tmp_name, BSF_LOCAL, s, val,
b34976b6 2862 NULL, TRUE, FALSE, &bh);
252b5132
RH		 2863
2864 free (tmp_name);
2865
2f475487 2866 s->size += THUMB2ARM_GLUE_SIZE;
252b5132
RH		 2867 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
2868
2869 return;
2870}
2871
c7b8f16e 2872
845b51d6
PB		 2873/* Allocate space for ARMv4 BX veneers. */
2874
2875static void
2876record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
2877{
2878 asection * s;
2879 struct elf32_arm_link_hash_table *globals;
2880 char *tmp_name;
2881 struct elf_link_hash_entry *myh;
2882 struct bfd_link_hash_entry *bh;
2883 bfd_vma val;
2884
2885 /* BX PC does not need a veneer. */
2886 if (reg == 15)
2887 return;
2888
2889 globals = elf32_arm_hash_table (link_info);
2890
2891 BFD_ASSERT (globals != NULL);
2892 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2893
2894 /* Check if this veneer has already been allocated. */
2895 if (globals->bx_glue_offset[reg])
2896 return;
2897
2898 s = bfd_get_section_by_name
2899 (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
2900
2901 BFD_ASSERT (s != NULL);
2902
2903 /* Add symbol for veneer. */
2904 tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
2905
2906 BFD_ASSERT (tmp_name);
2907
2908 sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
2909
2910 myh = elf_link_hash_lookup
2911 (&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
2912
2913 BFD_ASSERT (myh == NULL);
2914
2915 bh = NULL;
2916 val = globals->bx_glue_size;
2917 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2918 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
2919 NULL, TRUE, FALSE, &bh);
2920
2921 myh = (struct elf_link_hash_entry *) bh;
2922 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2923 myh->forced_local = 1;
2924
2925 s->size += ARM_BX_VENEER_SIZE;
2926 globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
2927 globals->bx_glue_size += ARM_BX_VENEER_SIZE;
2928}
2929
2930
c7b8f16e
JB		 2931/* Add an entry to the code/data map for section SEC. */
2932
2933static void
2934elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
2935{
2936 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
2937 unsigned int newidx;
2938
2939 if (sec_data->map == NULL)
2940 {
2941 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
2942 sec_data->mapcount = 0;
2943 sec_data->mapsize = 1;
2944 }
2945
2946 newidx = sec_data->mapcount++;
2947
2948 if (sec_data->mapcount > sec_data->mapsize)
2949 {
2950 sec_data->mapsize *= 2;
515ef31d
NC		 2951 sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize
2952 * sizeof (elf32_arm_section_map));
2953 }
2954
2955 if (sec_data->map)
2956 {
2957 sec_data->map[newidx].vma = vma;
2958 sec_data->map[newidx].type = type;
c7b8f16e 2959 }
c7b8f16e
JB		 2960}
2961
2962
2963/* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2964 veneers are handled for now. */
2965
2966static bfd_vma
2967record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
2968 elf32_vfp11_erratum_list *branch,
2969 bfd *branch_bfd,
2970 asection *branch_sec,
2971 unsigned int offset)
2972{
2973 asection *s;
2974 struct elf32_arm_link_hash_table *hash_table;
2975 char *tmp_name;
2976 struct elf_link_hash_entry *myh;
2977 struct bfd_link_hash_entry *bh;
2978 bfd_vma val;
2979 struct _arm_elf_section_data *sec_data;
2980 int errcount;
2981 elf32_vfp11_erratum_list *newerr;
2982
2983 hash_table = elf32_arm_hash_table (link_info);
2984
2985 BFD_ASSERT (hash_table != NULL);
2986 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2987
2988 s = bfd_get_section_by_name
2989 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2990
2991 sec_data = elf32_arm_section_data (s);
2992
2993 BFD_ASSERT (s != NULL);
2994
2995 tmp_name = bfd_malloc ((bfd_size_type) strlen
2996 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
2997
2998 BFD_ASSERT (tmp_name);
2999
3000 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
3001 hash_table->num_vfp11_fixes);
3002
3003 myh = elf_link_hash_lookup
3004 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
3005
3006 BFD_ASSERT (myh == NULL);
3007
3008 bh = NULL;
3009 val = hash_table->vfp11_erratum_glue_size;
3010 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
3011 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
3012 NULL, TRUE, FALSE, &bh);
3013
3014 myh = (struct elf_link_hash_entry *) bh;
3015 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
3016 myh->forced_local = 1;
3017
3018 /* Link veneer back to calling location. */
3019 errcount = ++(sec_data->erratumcount);
3020 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
3021
3022 newerr->type = VFP11_ERRATUM_ARM_VENEER;
3023 newerr->vma = -1;
3024 newerr->u.v.branch = branch;
3025 newerr->u.v.id = hash_table->num_vfp11_fixes;
3026 branch->u.b.veneer = newerr;
3027
3028 newerr->next = sec_data->erratumlist;
3029 sec_data->erratumlist = newerr;
3030
3031 /* A symbol for the return from the veneer. */
3032 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
3033 hash_table->num_vfp11_fixes);
3034
3035 myh = elf_link_hash_lookup
3036 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
3037
3038 if (myh != NULL)
3039 abort ();
3040
3041 bh = NULL;
3042 val = offset + 4;
3043 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
3044 branch_sec, val, NULL, TRUE, FALSE, &bh);
3045
3046 myh = (struct elf_link_hash_entry *) bh;
3047 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
3048 myh->forced_local = 1;
3049
3050 free (tmp_name);
3051
3052 /* Generate a mapping symbol for the veneer section, and explicitly add an
3053 entry for that symbol to the code/data map for the section. */
3054 if (hash_table->vfp11_erratum_glue_size == 0)
3055 {
3056 bh = NULL;
3057 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
3058 ever requires this erratum fix. */
3059 _bfd_generic_link_add_one_symbol (link_info,
3060 hash_table->bfd_of_glue_owner, "$a",
3061 BSF_LOCAL, s, 0, NULL,
3062 TRUE, FALSE, &bh);
3063
3064 myh = (struct elf_link_hash_entry *) bh;
3065 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
3066 myh->forced_local = 1;
3067
3068 /* The elf32_arm_init_maps function only cares about symbols from input
3069 BFDs. We must make a note of this generated mapping symbol
3070 ourselves so that code byteswapping works properly in
3071 elf32_arm_write_section. */
3072 elf32_arm_section_map_add (s, 'a', 0);
3073 }
3074
3075 s->size += VFP11_ERRATUM_VENEER_SIZE;
3076 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
3077 hash_table->num_vfp11_fixes++;
3078
3079 /* The offset of the veneer. */
3080 return val;
3081}
3082
8afb0e02
NC		 3083/* Add the glue sections to ABFD. This function is called from the
3084 linker scripts in ld/emultempl/{armelf}.em. */
9b485d32 3085
b34976b6 3086bfd_boolean
57e8b36a
NC		 3087bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
3088 struct bfd_link_info *info)
252b5132 3089{
252b5132
RH		 3090 flagword flags;
3091 asection *sec;
3092
8afb0e02
NC		 3093 /* If we are only performing a partial
3094 link do not bother adding the glue. */
1049f94e 3095 if (info->relocatable)
b34976b6 3096 return TRUE;
252b5132 3097
252b5132
RH		 3098 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
3099
3100 if (sec == NULL)
3101 {
57db232e
NC		 3102 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
3103 will prevent elf_link_input_bfd() from processing the contents
3104 of this section. */
2f475487
AM		 3105 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3106 | SEC_CODE | SEC_READONLY);
252b5132 3107
3496cb2a
L		 3108 sec = bfd_make_section_with_flags (abfd,
3109 ARM2THUMB_GLUE_SECTION_NAME,
3110 flags);
252b5132
RH		 3111
3112 if (sec == NULL
252b5132 3113 || !bfd_set_section_alignment (abfd, sec, 2))
b34976b6 3114 return FALSE;
9a5aca8c 3115
57db232e
NC		 3116 /* Set the gc mark to prevent the section from being removed by garbage
3117 collection, despite the fact that no relocs refer to this section. */
3118 sec->gc_mark = 1;
252b5132
RH		 3119 }
3120
3121 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
3122
3123 if (sec == NULL)
3124 {
2f475487
AM		 3125 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3126 | SEC_CODE | SEC_READONLY);
252b5132 3127
3496cb2a
L		 3128 sec = bfd_make_section_with_flags (abfd,
3129 THUMB2ARM_GLUE_SECTION_NAME,
3130 flags);
252b5132
RH		 3131
3132 if (sec == NULL
252b5132 3133 || !bfd_set_section_alignment (abfd, sec, 2))
b34976b6 3134 return FALSE;
9a5aca8c 3135
57db232e 3136 sec->gc_mark = 1;
252b5132
RH		 3137 }
3138
c7b8f16e
JB		 3139 sec = bfd_get_section_by_name (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME);
3140
3141 if (sec == NULL)
3142 {
3143 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3144 | SEC_CODE | SEC_READONLY);
3145
3146 sec = bfd_make_section_with_flags (abfd,
3147 VFP11_ERRATUM_VENEER_SECTION_NAME,
3148 flags);
3149
3150 if (sec == NULL
3151 || !bfd_set_section_alignment (abfd, sec, 2))
3152 return FALSE;
3153
3154 sec->gc_mark = 1;
3155 }
3156
845b51d6
PB		 3157 sec = bfd_get_section_by_name (abfd, ARM_BX_GLUE_SECTION_NAME);
3158
3159 if (sec == NULL)
3160 {
3161 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3162 | SEC_CODE | SEC_READONLY);
3163
3164 sec = bfd_make_section_with_flags (abfd,
3165 ARM_BX_GLUE_SECTION_NAME,
3166 flags);
3167
3168 if (sec == NULL
3169 || !bfd_set_section_alignment (abfd, sec, 2))
3170 return FALSE;
3171
3172 sec->gc_mark = 1;
3173 }
3174
b34976b6 3175 return TRUE;
8afb0e02
NC		 3176}
3177
3178/* Select a BFD to be used to hold the sections used by the glue code.
3179 This function is called from the linker scripts in ld/emultempl/
3180 {armelf/pe}.em */
3181
b34976b6 3182bfd_boolean
57e8b36a 3183bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
8afb0e02
NC		 3184{
3185 struct elf32_arm_link_hash_table *globals;
3186
3187 /* If we are only performing a partial link
3188 do not bother getting a bfd to hold the glue. */
1049f94e 3189 if (info->relocatable)
b34976b6 3190 return TRUE;
8afb0e02 3191
b7693d02
DJ		 3192 /* Make sure we don't attach the glue sections to a dynamic object. */
3193 BFD_ASSERT (!(abfd->flags & DYNAMIC));
3194
8afb0e02
NC		 3195 globals = elf32_arm_hash_table (info);
3196
3197 BFD_ASSERT (globals != NULL);
3198
3199 if (globals->bfd_of_glue_owner != NULL)
b34976b6 3200 return TRUE;
8afb0e02 3201
252b5132
RH		 3202 /* Save the bfd for later use. */
3203 globals->bfd_of_glue_owner = abfd;
cedb70c5 3204
b34976b6 3205 return TRUE;
252b5132
RH		 3206}
3207
39b41c9c
PB		 3208static void check_use_blx(struct elf32_arm_link_hash_table *globals)
3209{
104d59d1
JM		 3210 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
3211 Tag_CPU_arch) > 2)
39b41c9c
PB		 3212 globals->use_blx = 1;
3213}
3214
b34976b6 3215bfd_boolean
57e8b36a 3216bfd_elf32_arm_process_before_allocation (bfd *abfd,
d504ffc8 3217 struct bfd_link_info *link_info)
252b5132
RH		 3218{
3219 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 3220 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH		 3221 Elf_Internal_Rela *irel, *irelend;
3222 bfd_byte *contents = NULL;
252b5132
RH		 3223
3224 asection *sec;
3225 struct elf32_arm_link_hash_table *globals;
3226
3227 /* If we are only performing a partial link do not bother
3228 to construct any glue. */
1049f94e 3229 if (link_info->relocatable)
b34976b6 3230 return TRUE;
252b5132 3231
39ce1a6a
NC		 3232 /* Here we have a bfd that is to be included on the link. We have a
3233 hook to do reloc rummaging, before section sizes are nailed down. */
252b5132
RH		 3234 globals = elf32_arm_hash_table (link_info);
3235
3236 BFD_ASSERT (globals != NULL);
39ce1a6a
NC		 3237
3238 check_use_blx (globals);
252b5132 3239
d504ffc8 3240 if (globals->byteswap_code && !bfd_big_endian (abfd))
e489d0ae 3241 {
d003868e
AM		 3242 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3243 abfd);
e489d0ae
PB		 3244 return FALSE;
3245 }
f21f3fe0 3246
39ce1a6a
NC		 3247 /* PR 5398: If we have not decided to include any loadable sections in
3248 the output then we will not have a glue owner bfd. This is OK, it
3249 just means that there is nothing else for us to do here. */
3250 if (globals->bfd_of_glue_owner == NULL)
3251 return TRUE;
3252
252b5132
RH		 3253 /* Rummage around all the relocs and map the glue vectors. */
3254 sec = abfd->sections;
3255
3256 if (sec == NULL)
b34976b6 3257 return TRUE;
252b5132
RH		 3258
3259 for (; sec != NULL; sec = sec->next)
3260 {
3261 if (sec->reloc_count == 0)
3262 continue;
3263
2f475487
AM		 3264 if ((sec->flags & SEC_EXCLUDE) != 0)
3265 continue;
3266
0ffa91dd 3267 symtab_hdr = & elf_symtab_hdr (abfd);
252b5132 3268
9b485d32 3269 /* Load the relocs. */
6cdc0ccc 3270 internal_relocs
57e8b36a 3271 = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
45d6a902 3272 (Elf_Internal_Rela *) NULL, FALSE);
252b5132 3273
6cdc0ccc
AM		 3274 if (internal_relocs == NULL)
3275 goto error_return;
252b5132 3276
6cdc0ccc
AM		 3277 irelend = internal_relocs + sec->reloc_count;
3278 for (irel = internal_relocs; irel < irelend; irel++)
252b5132
RH		 3279 {
3280 long r_type;
3281 unsigned long r_index;
252b5132
RH		 3282
3283 struct elf_link_hash_entry *h;
3284
3285 r_type = ELF32_R_TYPE (irel->r_info);
3286 r_index = ELF32_R_SYM (irel->r_info);
3287
9b485d32 3288 /* These are the only relocation types we care about. */
ba96a88f 3289 if ( r_type != R_ARM_PC24
b7693d02 3290 && r_type != R_ARM_PLT32
5b5bb741
PB		 3291 && r_type != R_ARM_CALL
3292 && r_type != R_ARM_JUMP24
bd97cb95 3293 && r_type != R_ARM_THM_CALL
845b51d6
PB		 3294 && r_type != R_ARM_THM_JUMP24
3295 && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
252b5132
RH		 3296 continue;
3297
3298 /* Get the section contents if we haven't done so already. */
3299 if (contents == NULL)
3300 {
3301 /* Get cached copy if it exists. */
3302 if (elf_section_data (sec)->this_hdr.contents != NULL)
3303 contents = elf_section_data (sec)->this_hdr.contents;
3304 else
3305 {
3306 /* Go get them off disk. */
57e8b36a 3307 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH		 3308 goto error_return;
3309 }
3310 }
3311
845b51d6
PB		 3312 if (r_type == R_ARM_V4BX)
3313 {
3314 int reg;
3315
3316 reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
3317 record_arm_bx_glue (link_info, reg);
3318 continue;
3319 }
3320
a7c10850 3321 /* If the relocation is not against a symbol it cannot concern us. */
252b5132
RH		 3322 h = NULL;
3323
9b485d32 3324 /* We don't care about local symbols. */
252b5132
RH		 3325 if (r_index < symtab_hdr->sh_info)
3326 continue;
3327
9b485d32 3328 /* This is an external symbol. */
252b5132
RH		 3329 r_index -= symtab_hdr->sh_info;
3330 h = (struct elf_link_hash_entry *)
3331 elf_sym_hashes (abfd)[r_index];
3332
3333 /* If the relocation is against a static symbol it must be within
3334 the current section and so cannot be a cross ARM/Thumb relocation. */
3335 if (h == NULL)
3336 continue;
3337
d504ffc8
DJ		 3338 /* If the call will go through a PLT entry then we do not need
3339 glue. */
3340 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
b7693d02
DJ		 3341 continue;
3342
252b5132
RH		 3343 switch (r_type)
3344 {
3345 case R_ARM_PC24:
c6596c5e 3346 case R_ARM_PLT32:
5b5bb741
PB		 3347 case R_ARM_CALL:
3348 case R_ARM_JUMP24:
252b5132 3349 /* This one is a call from arm code. We need to look up
2f0ca46a 3350 the target of the call. If it is a thumb target, we
252b5132 3351 insert glue. */
39b41c9c
PB		 3352 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC
3353 && !(r_type == R_ARM_CALL && globals->use_blx))
252b5132
RH		 3354 record_arm_to_thumb_glue (link_info, h);
3355 break;
3356
c19d1205 3357 case R_ARM_THM_CALL:
bd97cb95 3358 case R_ARM_THM_JUMP24:
f21f3fe0 3359 /* This one is a call from thumb code. We look
2f0ca46a 3360 up the target of the call. If it is not a thumb
bcbdc74c 3361 target, we insert glue. */
bd97cb95
DJ		 3362 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
3363 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
5ab79981 3364 && h->root.type != bfd_link_hash_undefweak)
252b5132
RH		 3365 record_thumb_to_arm_glue (link_info, h);
3366 break;
3367
3368 default:
c6596c5e 3369 abort ();
252b5132
RH		 3370 }
3371 }
6cdc0ccc
AM		 3372
3373 if (contents != NULL
3374 && elf_section_data (sec)->this_hdr.contents != contents)
3375 free (contents);
3376 contents = NULL;
3377
3378 if (internal_relocs != NULL
3379 && elf_section_data (sec)->relocs != internal_relocs)
3380 free (internal_relocs);
3381 internal_relocs = NULL;
252b5132
RH		 3382 }
3383
b34976b6 3384 return TRUE;
9a5aca8c 3385
252b5132 3386error_return:
6cdc0ccc
AM		 3387 if (contents != NULL
3388 && elf_section_data (sec)->this_hdr.contents != contents)
3389 free (contents);
3390 if (internal_relocs != NULL
3391 && elf_section_data (sec)->relocs != internal_relocs)
3392 free (internal_relocs);
9a5aca8c 3393
b34976b6 3394 return FALSE;
252b5132 3395}
7e392df6 3396#endif
252b5132 3397
eb043451 3398
c7b8f16e
JB		 3399/* Initialise maps of ARM/Thumb/data for input BFDs. */
3400
3401void
3402bfd_elf32_arm_init_maps (bfd *abfd)
3403{
3404 Elf_Internal_Sym *isymbuf;
3405 Elf_Internal_Shdr *hdr;
3406 unsigned int i, localsyms;
3407
3408 if ((abfd->flags & DYNAMIC) != 0)
3409 return;
3410
0ffa91dd 3411 hdr = & elf_symtab_hdr (abfd);
c7b8f16e
JB		 3412 localsyms = hdr->sh_info;
3413
3414 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3415 should contain the number of local symbols, which should come before any
3416 global symbols. Mapping symbols are always local. */
3417 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
3418 NULL);
3419
3420 /* No internal symbols read? Skip this BFD. */
3421 if (isymbuf == NULL)
3422 return;
3423
3424 for (i = 0; i < localsyms; i++)
3425 {
3426 Elf_Internal_Sym *isym = &isymbuf[i];
3427 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3428 const char *name;
3429
3430 if (sec != NULL
3431 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
3432 {
3433 name = bfd_elf_string_from_elf_section (abfd,
3434 hdr->sh_link, isym->st_name);
3435
3436 if (bfd_is_arm_special_symbol_name (name,
3437 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
3438 elf32_arm_section_map_add (sec, name[1], isym->st_value);
3439 }
3440 }
3441}
3442
3443
3444void
3445bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
3446{
3447 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
104d59d1 3448 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
c7b8f16e
JB		 3449
3450 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3451 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
3452 {
3453 switch (globals->vfp11_fix)
3454 {
3455 case BFD_ARM_VFP11_FIX_DEFAULT:
3456 case BFD_ARM_VFP11_FIX_NONE:
3457 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3458 break;
3459
3460 default:
3461 /* Give a warning, but do as the user requests anyway. */
3462 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
3463 "workaround is not necessary for target architecture"), obfd);
3464 }
3465 }
3466 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
3467 /* For earlier architectures, we might need the workaround, but do not
3468 enable it by default. If users is running with broken hardware, they
3469 must enable the erratum fix explicitly. */
3470 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3471}
3472
3473
3474enum bfd_arm_vfp11_pipe {
3475 VFP11_FMAC,
3476 VFP11_LS,
3477 VFP11_DS,
3478 VFP11_BAD
3479};
3480
3481/* Return a VFP register number. This is encoded as RX:X for single-precision
3482 registers, or X:RX for double-precision registers, where RX is the group of
3483 four bits in the instruction encoding and X is the single extension bit.
3484 RX and X fields are specified using their lowest (starting) bit. The return
3485 value is:
3486
3487 0...31: single-precision registers s0...s31
3488 32...63: double-precision registers d0...d31.
3489
3490 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3491 encounter VFP3 instructions, so we allow the full range for DP registers. */
3492
3493static unsigned int
3494bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
3495 unsigned int x)
3496{
3497 if (is_double)
3498 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
3499 else
3500 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
3501}
3502
3503/* Set bits in *WMASK according to a register number REG as encoded by
3504 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3505
3506static void
3507bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
3508{
3509 if (reg < 32)
3510 *wmask |= 1 << reg;
3511 else if (reg < 48)
3512 *wmask |= 3 << ((reg - 32) * 2);
3513}
3514
3515/* Return TRUE if WMASK overwrites anything in REGS. */
3516
3517static bfd_boolean
3518bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
3519{
3520 int i;
3521
3522 for (i = 0; i < numregs; i++)
3523 {
3524 unsigned int reg = regs[i];
3525
3526 if (reg < 32 && (wmask & (1 << reg)) != 0)
3527 return TRUE;
3528
3529 reg -= 32;
3530
3531 if (reg >= 16)
3532 continue;
3533
3534 if ((wmask & (3 << (reg * 2))) != 0)
3535 return TRUE;
3536 }
3537
3538 return FALSE;
3539}
3540
3541/* In this function, we're interested in two things: finding input registers
3542 for VFP data-processing instructions, and finding the set of registers which
3543 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3544 hold the written set, so FLDM etc. are easy to deal with (we're only
3545 interested in 32 SP registers or 16 dp registers, due to the VFP version
3546 implemented by the chip in question). DP registers are marked by setting
3547 both SP registers in the write mask). */
3548
3549static enum bfd_arm_vfp11_pipe
3550bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
3551 int *numregs)
3552{
3553 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
3554 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
3555
3556 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3557 {
3558 unsigned int pqrs;
3559 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3560 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3561
3562 pqrs = ((insn & 0x00800000) >> 20)
3563 | ((insn & 0x00300000) >> 19)
3564 | ((insn & 0x00000040) >> 6);
3565
3566 switch (pqrs)
3567 {
3568 case 0: /* fmac[sd]. */
3569 case 1: /* fnmac[sd]. */
3570 case 2: /* fmsc[sd]. */
3571 case 3: /* fnmsc[sd]. */
3572 pipe = VFP11_FMAC;
3573 bfd_arm_vfp11_write_mask (destmask, fd);
3574 regs[0] = fd;
3575 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3576 regs[2] = fm;
3577 *numregs = 3;
3578 break;
3579
3580 case 4: /* fmul[sd]. */
3581 case 5: /* fnmul[sd]. */
3582 case 6: /* fadd[sd]. */
3583 case 7: /* fsub[sd]. */
3584 pipe = VFP11_FMAC;
3585 goto vfp_binop;
3586
3587 case 8: /* fdiv[sd]. */
3588 pipe = VFP11_DS;
3589 vfp_binop:
3590 bfd_arm_vfp11_write_mask (destmask, fd);
3591 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3592 regs[1] = fm;
3593 *numregs = 2;
3594 break;
3595
3596 case 15: /* extended opcode. */
3597 {
3598 unsigned int extn = ((insn >> 15) & 0x1e)
3599 | ((insn >> 7) & 1);
3600
3601 switch (extn)
3602 {
3603 case 0: /* fcpy[sd]. */
3604 case 1: /* fabs[sd]. */
3605 case 2: /* fneg[sd]. */
3606 case 8: /* fcmp[sd]. */
3607 case 9: /* fcmpe[sd]. */
3608 case 10: /* fcmpz[sd]. */
3609 case 11: /* fcmpez[sd]. */
3610 case 16: /* fuito[sd]. */
3611 case 17: /* fsito[sd]. */
3612 case 24: /* ftoui[sd]. */
3613 case 25: /* ftouiz[sd]. */
3614 case 26: /* ftosi[sd]. */
3615 case 27: /* ftosiz[sd]. */
3616 /* These instructions will not bounce due to underflow. */
3617 *numregs = 0;
3618 pipe = VFP11_FMAC;
3619 break;
3620
3621 case 3: /* fsqrt[sd]. */
3622 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3623 registers to cause the erratum in previous instructions. */
3624 bfd_arm_vfp11_write_mask (destmask, fd);
3625 pipe = VFP11_DS;
3626 break;
3627
3628 case 15: /* fcvt{ds,sd}. */
3629 {
3630 int rnum = 0;
3631
3632 bfd_arm_vfp11_write_mask (destmask, fd);
3633
3634 /* Only FCVTSD can underflow. */
3635 if ((insn & 0x100) != 0)
3636 regs[rnum++] = fm;
3637
3638 *numregs = rnum;
3639
3640 pipe = VFP11_FMAC;
3641 }
3642 break;
3643
3644 default:
3645 return VFP11_BAD;
3646 }
3647 }
3648 break;
3649
3650 default:
3651 return VFP11_BAD;
3652 }
3653 }
3654 /* Two-register transfer. */
3655 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
3656 {
3657 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3658
3659 if ((insn & 0x100000) == 0)
3660 {
3661 if (is_double)
3662 bfd_arm_vfp11_write_mask (destmask, fm);
3663 else
3664 {
3665 bfd_arm_vfp11_write_mask (destmask, fm);
3666 bfd_arm_vfp11_write_mask (destmask, fm + 1);
3667 }
3668 }
3669
3670 pipe = VFP11_LS;
3671 }
3672 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
3673 {
3674 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3675 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
3676
3677 switch (puw)
3678 {
3679 case 0: /* Two-reg transfer. We should catch these above. */
3680 abort ();
3681
3682 case 2: /* fldm[sdx]. */
3683 case 3:
3684 case 5:
3685 {
3686 unsigned int i, offset = insn & 0xff;
3687
3688 if (is_double)
3689 offset >>= 1;
3690
3691 for (i = fd; i < fd + offset; i++)
3692 bfd_arm_vfp11_write_mask (destmask, i);
3693 }
3694 break;
3695
3696 case 4: /* fld[sd]. */
3697 case 6:
3698 bfd_arm_vfp11_write_mask (destmask, fd);
3699 break;
3700
3701 default:
3702 return VFP11_BAD;
3703 }
3704
3705 pipe = VFP11_LS;
3706 }
3707 /* Single-register transfer. Note L==0. */
3708 else if ((insn & 0x0f100e10) == 0x0e000a10)
3709 {
3710 unsigned int opcode = (insn >> 21) & 7;
3711 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
3712
3713 switch (opcode)
3714 {
3715 case 0: /* fmsr/fmdlr. */
3716 case 1: /* fmdhr. */
3717 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3718 destination register. I don't know if this is exactly right,
3719 but it is the conservative choice. */
3720 bfd_arm_vfp11_write_mask (destmask, fn);
3721 break;
3722
3723 case 7: /* fmxr. */
3724 break;
3725 }
3726
3727 pipe = VFP11_LS;
3728 }
3729
3730 return pipe;
3731}
3732
3733
3734static int elf32_arm_compare_mapping (const void * a, const void * b);
3735
3736
3737/* Look for potentially-troublesome code sequences which might trigger the
3738 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3739 (available from ARM) for details of the erratum. A short version is
3740 described in ld.texinfo. */
3741
3742bfd_boolean
3743bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
3744{
3745 asection *sec;
3746 bfd_byte *contents = NULL;
3747 int state = 0;
3748 int regs[3], numregs = 0;
3749 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
3750 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
3751
3752 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3753 The states transition as follows:
3754
3755 0 -> 1 (vector) or 0 -> 2 (scalar)
3756 A VFP FMAC-pipeline instruction has been seen. Fill
3757 regs[0]..regs[numregs-1] with its input operands. Remember this
3758 instruction in 'first_fmac'.
3759
3760 1 -> 2
3761 Any instruction, except for a VFP instruction which overwrites
3762 regs[*].
3763
3764 1 -> 3 [ -> 0 ] or
3765 2 -> 3 [ -> 0 ]
3766 A VFP instruction has been seen which overwrites any of regs[*].
3767 We must make a veneer! Reset state to 0 before examining next
3768 instruction.
3769
3770 2 -> 0
3771 If we fail to match anything in state 2, reset to state 0 and reset
3772 the instruction pointer to the instruction after 'first_fmac'.
3773
3774 If the VFP11 vector mode is in use, there must be at least two unrelated
3775 instructions between anti-dependent VFP11 instructions to properly avoid
3776 triggering the erratum, hence the use of the extra state 1.
3777 */
3778
3779 /* If we are only performing a partial link do not bother
3780 to construct any glue. */
3781 if (link_info->relocatable)
3782 return TRUE;
3783
0ffa91dd
NC		 3784 /* Skip if this bfd does not correspond to an ELF image. */
3785 if (! is_arm_elf (abfd))
3786 return TRUE;
3787
c7b8f16e
JB		 3788 /* We should have chosen a fix type by the time we get here. */
3789 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
3790
3791 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
3792 return TRUE;
2e6030b9 3793
c7b8f16e
JB		 3794 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3795 {
3796 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
3797 struct _arm_elf_section_data *sec_data;
3798
3799 /* If we don't have executable progbits, we're not interested in this
3800 section. Also skip if section is to be excluded. */
3801 if (elf_section_type (sec) != SHT_PROGBITS
3802 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
3803 || (sec->flags & SEC_EXCLUDE) != 0
3804 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
3805 continue;
3806
3807 sec_data = elf32_arm_section_data (sec);
3808
3809 if (sec_data->mapcount == 0)
3810 continue;
3811
3812 if (elf_section_data (sec)->this_hdr.contents != NULL)
3813 contents = elf_section_data (sec)->this_hdr.contents;
3814 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3815 goto error_return;
3816
3817 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
3818 elf32_arm_compare_mapping);
3819
3820 for (span = 0; span < sec_data->mapcount; span++)
3821 {
3822 unsigned int span_start = sec_data->map[span].vma;
3823 unsigned int span_end = (span == sec_data->mapcount - 1)
3824 ? sec->size : sec_data->map[span + 1].vma;
3825 char span_type = sec_data->map[span].type;
3826
3827 /* FIXME: Only ARM mode is supported at present. We may need to
3828 support Thumb-2 mode also at some point. */
3829 if (span_type != 'a')
3830 continue;
3831
3832 for (i = span_start; i < span_end;)
3833 {
3834 unsigned int next_i = i + 4;
3835 unsigned int insn = bfd_big_endian (abfd)
3836 ? (contents[i] << 24)
3837 | (contents[i + 1] << 16)
3838 | (contents[i + 2] << 8)
3839 | contents[i + 3]
3840 : (contents[i + 3] << 24)
3841 | (contents[i + 2] << 16)
3842 | (contents[i + 1] << 8)
3843 | contents[i];
3844 unsigned int writemask = 0;
3845 enum bfd_arm_vfp11_pipe pipe;
3846
3847 switch (state)
3848 {
3849 case 0:
3850 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
3851 &numregs);
3852 /* I'm assuming the VFP11 erratum can trigger with denorm
3853 operands on either the FMAC or the DS pipeline. This might
3854 lead to slightly overenthusiastic veneer insertion. */
3855 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
3856 {
3857 state = use_vector ? 1 : 2;
3858 first_fmac = i;
3859 veneer_of_insn = insn;
3860 }
3861 break;
3862
3863 case 1:
3864 {
3865 int other_regs[3], other_numregs;
3866 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3867 other_regs,
3868 &other_numregs);
3869 if (pipe != VFP11_BAD
3870 && bfd_arm_vfp11_antidependency (writemask, regs,
3871 numregs))
3872 state = 3;
3873 else
3874 state = 2;
3875 }
3876 break;
3877
3878 case 2:
3879 {
3880 int other_regs[3], other_numregs;
3881 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3882 other_regs,
3883 &other_numregs);
3884 if (pipe != VFP11_BAD
3885 && bfd_arm_vfp11_antidependency (writemask, regs,
3886 numregs))
3887 state = 3;
3888 else
3889 {
3890 state = 0;
3891 next_i = first_fmac + 4;
3892 }
3893 }
3894 break;
3895
3896 case 3:
3897 abort (); /* Should be unreachable. */
3898 }
3899
3900 if (state == 3)
3901 {
3902 elf32_vfp11_erratum_list *newerr
3903 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
3904 int errcount;
3905
3906 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
3907
3908 newerr->u.b.vfp_insn = veneer_of_insn;
3909
3910 switch (span_type)
3911 {
3912 case 'a':
3913 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
3914 break;
3915
3916 default:
3917 abort ();
3918 }
3919
3920 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
3921 first_fmac);
3922
3923 newerr->vma = -1;
3924
3925 newerr->next = sec_data->erratumlist;
3926 sec_data->erratumlist = newerr;
3927
3928 state = 0;
3929 }
3930
3931 i = next_i;
3932 }
3933 }
3934
3935 if (contents != NULL
3936 && elf_section_data (sec)->this_hdr.contents != contents)
3937 free (contents);
3938 contents = NULL;
3939 }
3940
3941 return TRUE;
3942
3943error_return:
3944 if (contents != NULL
3945 && elf_section_data (sec)->this_hdr.contents != contents)
3946 free (contents);
3947
3948 return FALSE;
3949}
3950
3951/* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3952 after sections have been laid out, using specially-named symbols. */
3953
3954void
3955bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
3956 struct bfd_link_info *link_info)
3957{
3958 asection *sec;
3959 struct elf32_arm_link_hash_table *globals;
3960 char *tmp_name;
3961
3962 if (link_info->relocatable)
3963 return;
2e6030b9
MS		 3964
3965 /* Skip if this bfd does not correspond to an ELF image. */
0ffa91dd 3966 if (! is_arm_elf (abfd))
2e6030b9
MS		 3967 return;
3968
c7b8f16e
JB		 3969 globals = elf32_arm_hash_table (link_info);
3970
3971 tmp_name = bfd_malloc ((bfd_size_type) strlen
3972 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
3973
3974 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3975 {
3976 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
3977 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
3978
3979 for (; errnode != NULL; errnode = errnode->next)
3980 {
3981 struct elf_link_hash_entry *myh;
3982 bfd_vma vma;
3983
3984 switch (errnode->type)
3985 {
3986 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
3987 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
3988 /* Find veneer symbol. */
3989 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
3990 errnode->u.b.veneer->u.v.id);
3991
3992 myh = elf_link_hash_lookup
3993 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3994
3995 if (myh == NULL)
3996 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
3997 "`%s'"), abfd, tmp_name);
3998
3999 vma = myh->root.u.def.section->output_section->vma
4000 + myh->root.u.def.section->output_offset
4001 + myh->root.u.def.value;
4002
4003 errnode->u.b.veneer->vma = vma;
4004 break;
4005
4006 case VFP11_ERRATUM_ARM_VENEER:
4007 case VFP11_ERRATUM_THUMB_VENEER:
4008 /* Find return location. */
4009 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
4010 errnode->u.v.id);
4011
4012 myh = elf_link_hash_lookup
4013 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
4014
4015 if (myh == NULL)
4016 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
4017 "`%s'"), abfd, tmp_name);
4018
4019 vma = myh->root.u.def.section->output_section->vma
4020 + myh->root.u.def.section->output_offset
4021 + myh->root.u.def.value;
4022
4023 errnode->u.v.branch->vma = vma;
4024 break;
4025
4026 default:
4027 abort ();
4028 }
4029 }
4030 }
4031
4032 free (tmp_name);
4033}
4034
4035
eb043451
PB		 4036/* Set target relocation values needed during linking. */
4037
4038void
bf21ed78
MS		 4039bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
4040 struct bfd_link_info *link_info,
eb043451 4041 int target1_is_rel,
319850b4 4042 char * target2_type,
33bfe774 4043 int fix_v4bx,
c7b8f16e 4044 int use_blx,
bf21ed78 4045 bfd_arm_vfp11_fix vfp11_fix,
27e55c4d 4046 int no_enum_warn, int pic_veneer)
eb043451
PB		 4047{
4048 struct elf32_arm_link_hash_table *globals;
4049
4050 globals = elf32_arm_hash_table (link_info);
4051
4052 globals->target1_is_rel = target1_is_rel;
4053 if (strcmp (target2_type, "rel") == 0)
4054 globals->target2_reloc = R_ARM_REL32;
eeac373a
PB		 4055 else if (strcmp (target2_type, "abs") == 0)
4056 globals->target2_reloc = R_ARM_ABS32;
eb043451
PB		 4057 else if (strcmp (target2_type, "got-rel") == 0)
4058 globals->target2_reloc = R_ARM_GOT_PREL;
4059 else
4060 {
4061 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
4062 target2_type);
4063 }
319850b4 4064 globals->fix_v4bx = fix_v4bx;
33bfe774 4065 globals->use_blx |= use_blx;
c7b8f16e 4066 globals->vfp11_fix = vfp11_fix;
27e55c4d 4067 globals->pic_veneer = pic_veneer;
bf21ed78 4068
0ffa91dd
NC		 4069 BFD_ASSERT (is_arm_elf (output_bfd));
4070 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
eb043451 4071}
eb043451 4072
252b5132
RH		 4073/* The thumb form of a long branch is a bit finicky, because the offset
4074 encoding is split over two fields, each in it's own instruction. They
f21f3fe0 4075 can occur in any order. So given a thumb form of long branch, and an
252b5132 4076 offset, insert the offset into the thumb branch and return finished
f21f3fe0 4077 instruction.
252b5132 4078
f21f3fe0 4079 It takes two thumb instructions to encode the target address. Each has
4cc11e76 4080 11 bits to invest. The upper 11 bits are stored in one (identified by
f21f3fe0
UD		 4081 H-0.. see below), the lower 11 bits are stored in the other (identified
4082 by H-1).
252b5132 4083
f21f3fe0 4084 Combine together and shifted left by 1 (it's a half word address) and
252b5132
RH		 4085 there you have it.
4086
4087 Op: 1111 = F,
4088 H-0, upper address-0 = 000
4089 Op: 1111 = F,
4090 H-1, lower address-0 = 800
4091
f21f3fe0 4092 They can be ordered either way, but the arm tools I've seen always put
252b5132
RH		 4093 the lower one first. It probably doesn't matter. krk@cygnus.com
4094
4095 XXX: Actually the order does matter. The second instruction (H-1)
4096 moves the computed address into the PC, so it must be the second one
4097 in the sequence. The problem, however is that whilst little endian code
4098 stores the instructions in HI then LOW order, big endian code does the
dfc5f959 4099 reverse. nickc@cygnus.com. */
252b5132 4100
dfc5f959
NC		 4101#define LOW_HI_ORDER 0xF800F000
4102#define HI_LOW_ORDER 0xF000F800
252b5132
RH		 4103
4104static insn32
57e8b36a 4105insert_thumb_branch (insn32 br_insn, int rel_off)
252b5132
RH		 4106{
4107 unsigned int low_bits;
4108 unsigned int high_bits;
4109
252b5132
RH		 4110 BFD_ASSERT ((rel_off & 1) != 1);
4111
dfc5f959
NC		 4112 rel_off >>= 1; /* Half word aligned address. */
4113 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
4114 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
252b5132
RH		 4115
4116 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
4117 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
4118 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
4119 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
4120 else
9b485d32 4121 /* FIXME: abort is probably not the right call. krk@cygnus.com */
57e8b36a 4122 abort (); /* Error - not a valid branch instruction form. */
252b5132 4123
252b5132
RH		 4124 return br_insn;
4125}
4126
52ab56c2
PB		 4127
4128/* Store an Arm insn into an output section not processed by
4129 elf32_arm_write_section. */
4130
4131static void
4132put_arm_insn (struct elf32_arm_link_hash_table *htab,
4133 bfd * output_bfd, bfd_vma val, void * ptr)
4134{
4135 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4136 bfd_putl32 (val, ptr);
4137 else
4138 bfd_putb32 (val, ptr);
4139}
4140
4141
4142/* Store a 16-bit Thumb insn into an output section not processed by
4143 elf32_arm_write_section. */
4144
4145static void
4146put_thumb_insn (struct elf32_arm_link_hash_table *htab,
4147 bfd * output_bfd, bfd_vma val, void * ptr)
4148{
4149 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4150 bfd_putl16 (val, ptr);
4151 else
4152 bfd_putb16 (val, ptr);
4153}
4154
4155
9b485d32
NC		 4156/* Thumb code calling an ARM function. */
4157
252b5132 4158static int
57e8b36a
NC		 4159elf32_thumb_to_arm_stub (struct bfd_link_info * info,
4160 const char * name,
4161 bfd * input_bfd,
4162 bfd * output_bfd,
4163 asection * input_section,
4164 bfd_byte * hit_data,
4165 asection * sym_sec,
4166 bfd_vma offset,
4167 bfd_signed_vma addend,
f2a9dd69
DJ		 4168 bfd_vma val,
4169 char **error_message)
252b5132 4170{
bcbdc74c 4171 asection * s = 0;
dc810e39 4172 bfd_vma my_offset;
252b5132
RH		 4173 unsigned long int tmp;
4174 long int ret_offset;
bcbdc74c
NC		 4175 struct elf_link_hash_entry * myh;
4176 struct elf32_arm_link_hash_table * globals;
252b5132 4177
f2a9dd69 4178 myh = find_thumb_glue (info, name, error_message);
252b5132 4179 if (myh == NULL)
b34976b6 4180 return FALSE;
252b5132
RH		 4181
4182 globals = elf32_arm_hash_table (info);
4183
4184 BFD_ASSERT (globals != NULL);
4185 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4186
4187 my_offset = myh->root.u.def.value;
4188
4189 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4190 THUMB2ARM_GLUE_SECTION_NAME);
4191
4192 BFD_ASSERT (s != NULL);
4193 BFD_ASSERT (s->contents != NULL);
4194 BFD_ASSERT (s->output_section != NULL);
4195
4196 if ((my_offset & 0x01) == 0x01)
4197 {
4198 if (sym_sec != NULL
4199 && sym_sec->owner != NULL
4200 && !INTERWORK_FLAG (sym_sec->owner))
4201 {
8f615d07 4202 (*_bfd_error_handler)
d003868e
AM		 4203 (_("%B(%s): warning: interworking not enabled.\n"
4204 " first occurrence: %B: thumb call to arm"),
4205 sym_sec->owner, input_bfd, name);
252b5132 4206
b34976b6 4207 return FALSE;
252b5132
RH		 4208 }
4209
4210 --my_offset;
4211 myh->root.u.def.value = my_offset;
4212
52ab56c2
PB		 4213 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
4214 s->contents + my_offset);
252b5132 4215
52ab56c2
PB		 4216 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
4217 s->contents + my_offset + 2);
252b5132
RH		 4218
4219 ret_offset =
9b485d32
NC		 4220 /* Address of destination of the stub. */
4221 ((bfd_signed_vma) val)
252b5132 4222 - ((bfd_signed_vma)
57e8b36a
NC		 4223 /* Offset from the start of the current section
4224 to the start of the stubs. */
9b485d32
NC		 4225 (s->output_offset
4226 /* Offset of the start of this stub from the start of the stubs. */
4227 + my_offset
4228 /* Address of the start of the current section. */
4229 + s->output_section->vma)
4230 /* The branch instruction is 4 bytes into the stub. */
4231 + 4
4232 /* ARM branches work from the pc of the instruction + 8. */
4233 + 8);
252b5132 4234
52ab56c2
PB		 4235 put_arm_insn (globals, output_bfd,
4236 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
4237 s->contents + my_offset + 4);
252b5132
RH		 4238 }
4239
4240 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
4241
427bfd90
NC		 4242 /* Now go back and fix up the original BL insn to point to here. */
4243 ret_offset =
4244 /* Address of where the stub is located. */
4245 (s->output_section->vma + s->output_offset + my_offset)
4246 /* Address of where the BL is located. */
57e8b36a
NC		 4247 - (input_section->output_section->vma + input_section->output_offset
4248 + offset)
427bfd90
NC		 4249 /* Addend in the relocation. */
4250 - addend
4251 /* Biassing for PC-relative addressing. */
4252 - 8;
252b5132
RH		 4253
4254 tmp = bfd_get_32 (input_bfd, hit_data
4255 - input_section->vma);
4256
4257 bfd_put_32 (output_bfd,
dc810e39 4258 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
252b5132
RH		 4259 hit_data - input_section->vma);
4260
b34976b6 4261 return TRUE;
252b5132
RH		 4262}
4263
a4fd1a8e 4264/* Populate an Arm to Thumb stub. Returns the stub symbol. */
9b485d32 4265
a4fd1a8e
PB		 4266static struct elf_link_hash_entry *
4267elf32_arm_create_thumb_stub (struct bfd_link_info * info,
4268 const char * name,
4269 bfd * input_bfd,
4270 bfd * output_bfd,
4271 asection * sym_sec,
4272 bfd_vma val,
f2a9dd69
DJ		 4273 asection *s,
4274 char **error_message)
252b5132 4275{
dc810e39 4276 bfd_vma my_offset;
252b5132 4277 long int ret_offset;
bcbdc74c
NC		 4278 struct elf_link_hash_entry * myh;
4279 struct elf32_arm_link_hash_table * globals;
252b5132 4280
f2a9dd69 4281 myh = find_arm_glue (info, name, error_message);
252b5132 4282 if (myh == NULL)
a4fd1a8e 4283 return NULL;
252b5132
RH		 4284
4285 globals = elf32_arm_hash_table (info);
4286
4287 BFD_ASSERT (globals != NULL);
4288 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4289
4290 my_offset = myh->root.u.def.value;
252b5132
RH		 4291
4292 if ((my_offset & 0x01) == 0x01)
4293 {
4294 if (sym_sec != NULL
4295 && sym_sec->owner != NULL
4296 && !INTERWORK_FLAG (sym_sec->owner))
4297 {
8f615d07 4298 (*_bfd_error_handler)
d003868e
AM		 4299 (_("%B(%s): warning: interworking not enabled.\n"
4300 " first occurrence: %B: arm call to thumb"),
4301 sym_sec->owner, input_bfd, name);
252b5132 4302 }
9b485d32 4303
252b5132
RH		 4304 --my_offset;
4305 myh->root.u.def.value = my_offset;
4306
27e55c4d
PB		 4307 if (info->shared || globals->root.is_relocatable_executable
4308 || globals->pic_veneer)
8f6277f5
PB		 4309 {
4310 /* For relocatable objects we can't use absolute addresses,
4311 so construct the address from a relative offset. */
4312 /* TODO: If the offset is small it's probably worth
4313 constructing the address with adds. */
52ab56c2
PB		 4314 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
4315 s->contents + my_offset);
4316 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
4317 s->contents + my_offset + 4);
4318 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
4319 s->contents + my_offset + 8);
8f6277f5
PB		 4320 /* Adjust the offset by 4 for the position of the add,
4321 and 8 for the pipeline offset. */
4322 ret_offset = (val - (s->output_offset
4323 + s->output_section->vma
4324 + my_offset + 12))
4325 | 1;
4326 bfd_put_32 (output_bfd, ret_offset,
4327 s->contents + my_offset + 12);
4328 }
26079076
PB		 4329 else if (globals->use_blx)
4330 {
4331 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
4332 s->contents + my_offset);
4333
4334 /* It's a thumb address. Add the low order bit. */
4335 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
4336 s->contents + my_offset + 4);
4337 }
8f6277f5
PB		 4338 else
4339 {
52ab56c2
PB		 4340 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
4341 s->contents + my_offset);
252b5132 4342
52ab56c2
PB		 4343 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
4344 s->contents + my_offset + 4);
252b5132 4345
8f6277f5
PB		 4346 /* It's a thumb address. Add the low order bit. */
4347 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
4348 s->contents + my_offset + 8);
4349 }
252b5132
RH		 4350 }
4351
4352 BFD_ASSERT (my_offset <= globals->arm_glue_size);
4353
a4fd1a8e
PB		 4354 return myh;
4355}
4356
4357/* Arm code calling a Thumb function. */
4358
4359static int
4360elf32_arm_to_thumb_stub (struct bfd_link_info * info,
4361 const char * name,
4362 bfd * input_bfd,
4363 bfd * output_bfd,
4364 asection * input_section,
4365 bfd_byte * hit_data,
4366 asection * sym_sec,
4367 bfd_vma offset,
4368 bfd_signed_vma addend,
f2a9dd69
DJ		 4369 bfd_vma val,
4370 char **error_message)
a4fd1a8e
PB		 4371{
4372 unsigned long int tmp;
4373 bfd_vma my_offset;
4374 asection * s;
4375 long int ret_offset;
4376 struct elf_link_hash_entry * myh;
4377 struct elf32_arm_link_hash_table * globals;
4378
4379 globals = elf32_arm_hash_table (info);
4380
4381 BFD_ASSERT (globals != NULL);
4382 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4383
4384 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4385 ARM2THUMB_GLUE_SECTION_NAME);
4386 BFD_ASSERT (s != NULL);
4387 BFD_ASSERT (s->contents != NULL);
4388 BFD_ASSERT (s->output_section != NULL);
4389
4390 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
f2a9dd69 4391 sym_sec, val, s, error_message);
a4fd1a8e
PB		 4392 if (!myh)
4393 return FALSE;
4394
4395 my_offset = myh->root.u.def.value;
252b5132
RH		 4396 tmp = bfd_get_32 (input_bfd, hit_data);
4397 tmp = tmp & 0xFF000000;
4398
9b485d32 4399 /* Somehow these are both 4 too far, so subtract 8. */
dc810e39
AM		 4400 ret_offset = (s->output_offset
4401 + my_offset
4402 + s->output_section->vma
4403 - (input_section->output_offset
4404 + input_section->output_section->vma
4405 + offset + addend)
4406 - 8);
9a5aca8c 4407
252b5132
RH		 4408 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
4409
dc810e39 4410 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
252b5132 4411
b34976b6 4412 return TRUE;
252b5132
RH		 4413}
4414
a4fd1a8e
PB		 4415/* Populate Arm stub for an exported Thumb function. */
4416
4417static bfd_boolean
4418elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
4419{
4420 struct bfd_link_info * info = (struct bfd_link_info *) inf;
4421 asection * s;
4422 struct elf_link_hash_entry * myh;
4423 struct elf32_arm_link_hash_entry *eh;
4424 struct elf32_arm_link_hash_table * globals;
4425 asection *sec;
4426 bfd_vma val;
f2a9dd69 4427 char *error_message;
a4fd1a8e
PB		 4428
4429 eh = elf32_arm_hash_entry(h);
4430 /* Allocate stubs for exported Thumb functions on v4t. */
4431 if (eh->export_glue == NULL)
4432 return TRUE;
4433
4434 globals = elf32_arm_hash_table (info);
4435
4436 BFD_ASSERT (globals != NULL);
4437 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4438
4439 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4440 ARM2THUMB_GLUE_SECTION_NAME);
4441 BFD_ASSERT (s != NULL);
4442 BFD_ASSERT (s->contents != NULL);
4443 BFD_ASSERT (s->output_section != NULL);
4444
4445 sec = eh->export_glue->root.u.def.section;
0eaedd0e
PB		 4446
4447 BFD_ASSERT (sec->output_section != NULL);
4448
a4fd1a8e
PB		 4449 val = eh->export_glue->root.u.def.value + sec->output_offset
4450 + sec->output_section->vma;
4451 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
4452 h->root.u.def.section->owner,
f2a9dd69
DJ		 4453 globals->obfd, sec, val, s,
4454 &error_message);
a4fd1a8e
PB		 4455 BFD_ASSERT (myh);
4456 return TRUE;
4457}
4458
845b51d6
PB		 4459/* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
4460
4461static bfd_vma
4462elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
4463{
4464 bfd_byte *p;
4465 bfd_vma glue_addr;
4466 asection *s;
4467 struct elf32_arm_link_hash_table *globals;
4468
4469 globals = elf32_arm_hash_table (info);
4470
4471 BFD_ASSERT (globals != NULL);
4472 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4473
4474 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4475 ARM_BX_GLUE_SECTION_NAME);
4476 BFD_ASSERT (s != NULL);
4477 BFD_ASSERT (s->contents != NULL);
4478 BFD_ASSERT (s->output_section != NULL);
4479
4480 BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
4481
4482 glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
4483
4484 if ((globals->bx_glue_offset[reg] & 1) == 0)
4485 {
4486 p = s->contents + glue_addr;
4487 bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
4488 bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
4489 bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
4490 globals->bx_glue_offset[reg] |= 1;
4491 }
4492
4493 return glue_addr + s->output_section->vma + s->output_offset;
4494}
4495
a4fd1a8e
PB		 4496/* Generate Arm stubs for exported Thumb symbols. */
4497static void
4498elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
4499 struct bfd_link_info *link_info)
4500{
4501 struct elf32_arm_link_hash_table * globals;
4502
4503 if (!link_info)
4504 return;
4505
4506 globals = elf32_arm_hash_table (link_info);
84c08195
PB		 4507 /* If blx is available then exported Thumb symbols are OK and there is
4508 nothing to do. */
a4fd1a8e
PB		 4509 if (globals->use_blx)
4510 return;
4511
4512 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
4513 link_info);
4514}
4515
eb043451
PB		 4516/* Some relocations map to different relocations depending on the
4517 target. Return the real relocation. */
4518static int
4519arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
4520 int r_type)
4521{
4522 switch (r_type)
4523 {
4524 case R_ARM_TARGET1:
4525 if (globals->target1_is_rel)
4526 return R_ARM_REL32;
4527 else
4528 return R_ARM_ABS32;
4529
4530 case R_ARM_TARGET2:
4531 return globals->target2_reloc;
4532
4533 default:
4534 return r_type;
4535 }
4536}
eb043451 4537
ba93b8ac
DJ		 4538/* Return the base VMA address which should be subtracted from real addresses
4539 when resolving @dtpoff relocation.
4540 This is PT_TLS segment p_vaddr. */
4541
4542static bfd_vma
4543dtpoff_base (struct bfd_link_info *info)
4544{
4545 /* If tls_sec is NULL, we should have signalled an error already. */
4546 if (elf_hash_table (info)->tls_sec == NULL)
4547 return 0;
4548 return elf_hash_table (info)->tls_sec->vma;
4549}
4550
4551/* Return the relocation value for @tpoff relocation
4552 if STT_TLS virtual address is ADDRESS. */
4553
4554static bfd_vma
4555tpoff (struct bfd_link_info *info, bfd_vma address)
4556{
4557 struct elf_link_hash_table *htab = elf_hash_table (info);
4558 bfd_vma base;
4559
4560 /* If tls_sec is NULL, we should have signalled an error already. */
4561 if (htab->tls_sec == NULL)
4562 return 0;
4563 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
4564 return address - htab->tls_sec->vma + base;
4565}
4566
00a97672
RS		 4567/* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4568 VALUE is the relocation value. */
4569
4570static bfd_reloc_status_type
4571elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
4572{
4573 if (value > 0xfff)
4574 return bfd_reloc_overflow;
4575
4576 value |= bfd_get_32 (abfd, data) & 0xfffff000;
4577 bfd_put_32 (abfd, value, data);
4578 return bfd_reloc_ok;
4579}
4580
4962c51a
MS		 4581/* For a given value of n, calculate the value of G_n as required to
4582 deal with group relocations. We return it in the form of an
4583 encoded constant-and-rotation, together with the final residual. If n is
4584 specified as less than zero, then final_residual is filled with the
4585 input value and no further action is performed. */
4586
4587static bfd_vma
4588calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
4589{
4590 int current_n;
4591 bfd_vma g_n;
4592 bfd_vma encoded_g_n = 0;
4593 bfd_vma residual = value; /* Also known as Y_n. */
4594
4595 for (current_n = 0; current_n <= n; current_n++)
4596 {
4597 int shift;
4598
4599 /* Calculate which part of the value to mask. */
4600 if (residual == 0)
4601 shift = 0;
4602 else
4603 {
4604 int msb;
4605
4606 /* Determine the most significant bit in the residual and
4607 align the resulting value to a 2-bit boundary. */
4608 for (msb = 30; msb >= 0; msb -= 2)
4609 if (residual & (3 << msb))
4610 break;
4611
4612 /* The desired shift is now (msb - 6), or zero, whichever
4613 is the greater. */
4614 shift = msb - 6;
4615 if (shift < 0)
4616 shift = 0;
4617 }
4618
4619 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4620 g_n = residual & (0xff << shift);
4621 encoded_g_n = (g_n >> shift)
4622 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
4623
4624 /* Calculate the residual for the next time around. */
4625 residual &= ~g_n;
4626 }
4627
4628 *final_residual = residual;
4629
4630 return encoded_g_n;
4631}
4632
4633/* Given an ARM instruction, determine whether it is an ADD or a SUB.
4634 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4635static int
4636identify_add_or_sub(bfd_vma insn)
4637{
4638 int opcode = insn & 0x1e00000;
4639
4640 if (opcode == 1 << 23) /* ADD */
4641 return 1;
4642
4643 if (opcode == 1 << 22) /* SUB */
4644 return -1;
4645
4646 return 0;
4647}
4648
e95de063
MS		 4649/* Determine if we're dealing with a Thumb-2 object. */
4650
4651static int using_thumb2 (struct elf32_arm_link_hash_table *globals)
4652{
104d59d1
JM		 4653 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4654 Tag_CPU_arch);
e95de063
MS		 4655 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
4656}
4657
252b5132 4658/* Perform a relocation as part of a final link. */
9b485d32 4659
252b5132 4660static bfd_reloc_status_type
57e8b36a
NC		 4661elf32_arm_final_link_relocate (reloc_howto_type * howto,
4662 bfd * input_bfd,
4663 bfd * output_bfd,
4664 asection * input_section,
4665 bfd_byte * contents,
4666 Elf_Internal_Rela * rel,
4667 bfd_vma value,
4668 struct bfd_link_info * info,
4669 asection * sym_sec,
4670 const char * sym_name,
4671 int sym_flags,
0945cdfd 4672 struct elf_link_hash_entry * h,
f2a9dd69
DJ		 4673 bfd_boolean * unresolved_reloc_p,
4674 char **error_message)
252b5132
RH		 4675{
4676 unsigned long r_type = howto->type;
4677 unsigned long r_symndx;
4678 bfd_byte * hit_data = contents + rel->r_offset;
4679 bfd * dynobj = NULL;
4680 Elf_Internal_Shdr * symtab_hdr;
4681 struct elf_link_hash_entry ** sym_hashes;
4682 bfd_vma * local_got_offsets;
4683 asection * sgot = NULL;
4684 asection * splt = NULL;
4685 asection * sreloc = NULL;
252b5132 4686 bfd_vma addend;
ba96a88f
NC		 4687 bfd_signed_vma signed_addend;
4688 struct elf32_arm_link_hash_table * globals;
f21f3fe0 4689
9c504268
PB		 4690 globals = elf32_arm_hash_table (info);
4691
0ffa91dd
NC		 4692 BFD_ASSERT (is_arm_elf (input_bfd));
4693
4694 /* Some relocation types map to different relocations depending on the
9c504268 4695 target. We pick the right one here. */
eb043451
PB		 4696 r_type = arm_real_reloc_type (globals, r_type);
4697 if (r_type != howto->type)
4698 howto = elf32_arm_howto_from_type (r_type);
9c504268 4699
cac15327
NC		 4700 /* If the start address has been set, then set the EF_ARM_HASENTRY
4701 flag. Setting this more than once is redundant, but the cost is
4702 not too high, and it keeps the code simple.
99e4ae17 4703
cac15327
NC		 4704 The test is done here, rather than somewhere else, because the
4705 start address is only set just before the final link commences.
4706
4707 Note - if the user deliberately sets a start address of 0, the
4708 flag will not be set. */
4709 if (bfd_get_start_address (output_bfd) != 0)
4710 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
99e4ae17 4711
252b5132
RH		 4712 dynobj = elf_hash_table (info)->dynobj;
4713 if (dynobj)
4714 {
4715 sgot = bfd_get_section_by_name (dynobj, ".got");
4716 splt = bfd_get_section_by_name (dynobj, ".plt");
4717 }
0ffa91dd 4718 symtab_hdr = & elf_symtab_hdr (input_bfd);
252b5132
RH		 4719 sym_hashes = elf_sym_hashes (input_bfd);
4720 local_got_offsets = elf_local_got_offsets (input_bfd);
4721 r_symndx = ELF32_R_SYM (rel->r_info);
4722
4e7fd91e 4723 if (globals->use_rel)
ba96a88f 4724 {
4e7fd91e
PB		 4725 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
4726
4727 if (addend & ((howto->src_mask + 1) >> 1))
4728 {
4729 signed_addend = -1;
4730 signed_addend &= ~ howto->src_mask;
4731 signed_addend |= addend;
4732 }
4733 else
4734 signed_addend = addend;
ba96a88f
NC		 4735 }
4736 else
4e7fd91e 4737 addend = signed_addend = rel->r_addend;
f21f3fe0 4738
252b5132
RH		 4739 switch (r_type)
4740 {
4741 case R_ARM_NONE:
28a094c2
DJ		 4742 /* We don't need to find a value for this symbol. It's just a
4743 marker. */
4744 *unresolved_reloc_p = FALSE;
252b5132
RH		 4745 return bfd_reloc_ok;
4746
00a97672
RS		 4747 case R_ARM_ABS12:
4748 if (!globals->vxworks_p)
4749 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4750
252b5132
RH		 4751 case R_ARM_PC24:
4752 case R_ARM_ABS32:
bb224fc3 4753 case R_ARM_ABS32_NOI:
252b5132 4754 case R_ARM_REL32:
bb224fc3 4755 case R_ARM_REL32_NOI:
5b5bb741
PB		 4756 case R_ARM_CALL:
4757 case R_ARM_JUMP24:
dfc5f959 4758 case R_ARM_XPC25:
eb043451 4759 case R_ARM_PREL31:
7359ea65 4760 case R_ARM_PLT32:
7359ea65
DJ		 4761 /* Handle relocations which should use the PLT entry. ABS32/REL32
4762 will use the symbol's value, which may point to a PLT entry, but we
4763 don't need to handle that here. If we created a PLT entry, all
4764 branches in this object should go to it. */
bb224fc3
MS		 4765 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
4766 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
7359ea65 4767 && h != NULL
c84cd8ee 4768 && splt != NULL
7359ea65
DJ		 4769 && h->plt.offset != (bfd_vma) -1)
4770 {
c84cd8ee
DJ		 4771 /* If we've created a .plt section, and assigned a PLT entry to
4772 this function, it should not be known to bind locally. If
4773 it were, we would have cleared the PLT entry. */
7359ea65
DJ		 4774 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
4775
4776 value = (splt->output_section->vma
4777 + splt->output_offset
4778 + h->plt.offset);
0945cdfd 4779 *unresolved_reloc_p = FALSE;
7359ea65
DJ		 4780 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4781 contents, rel->r_offset, value,
00a97672 4782 rel->r_addend);
7359ea65
DJ		 4783 }
4784
67687978
PB		 4785 /* When generating a shared object or relocatable executable, these
4786 relocations are copied into the output file to be resolved at
4787 run time. */
4788 if ((info->shared || globals->root.is_relocatable_executable)
7359ea65 4789 && (input_section->flags & SEC_ALLOC)
bb224fc3 4790 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
ee06dc07 4791 || !SYMBOL_CALLS_LOCAL (info, h))
7359ea65
DJ		 4792 && (h == NULL
4793 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4794 || h->root.type != bfd_link_hash_undefweak)
4795 && r_type != R_ARM_PC24
5b5bb741
PB		 4796 && r_type != R_ARM_CALL
4797 && r_type != R_ARM_JUMP24
ee06dc07 4798 && r_type != R_ARM_PREL31
7359ea65 4799 && r_type != R_ARM_PLT32)
252b5132 4800 {
947216bf
AM		 4801 Elf_Internal_Rela outrel;
4802 bfd_byte *loc;
b34976b6 4803 bfd_boolean skip, relocate;
f21f3fe0 4804
0945cdfd
DJ		 4805 *unresolved_reloc_p = FALSE;
4806
252b5132
RH		 4807 if (sreloc == NULL)
4808 {
4809 const char * name;
f21f3fe0 4810
252b5132
RH		 4811 name = (bfd_elf_string_from_elf_section
4812 (input_bfd,
4813 elf_elfheader (input_bfd)->e_shstrndx,
4814 elf_section_data (input_section)->rel_hdr.sh_name));
4815 if (name == NULL)
4816 return bfd_reloc_notsupported;
f21f3fe0 4817
00a97672 4818 BFD_ASSERT (reloc_section_p (globals, name, input_section));
f21f3fe0 4819
252b5132
RH		 4820 sreloc = bfd_get_section_by_name (dynobj, name);
4821 BFD_ASSERT (sreloc != NULL);
4822 }
f21f3fe0 4823
b34976b6
AM		 4824 skip = FALSE;
4825 relocate = FALSE;
f21f3fe0 4826
00a97672 4827 outrel.r_addend = addend;
c629eae0
JJ		 4828 outrel.r_offset =
4829 _bfd_elf_section_offset (output_bfd, info, input_section,
4830 rel->r_offset);
4831 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4832 skip = TRUE;
0bb2d96a 4833 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4834 skip = TRUE, relocate = TRUE;
252b5132
RH		 4835 outrel.r_offset += (input_section->output_section->vma
4836 + input_section->output_offset);
f21f3fe0 4837
252b5132 4838 if (skip)
0bb2d96a 4839 memset (&outrel, 0, sizeof outrel);
5e681ec4
PB		 4840 else if (h != NULL
4841 && h->dynindx != -1
7359ea65 4842 && (!info->shared
5e681ec4 4843 || !info->symbolic
f5385ebf 4844 || !h->def_regular))
5e681ec4 4845 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4846 else
4847 {
a16385dc
MM		 4848 int symbol;
4849
5e681ec4 4850 /* This symbol is local, or marked to become local. */
b7693d02
DJ		 4851 if (sym_flags == STT_ARM_TFUNC)
4852 value |= 1;
a16385dc 4853 if (globals->symbian_p)
6366ff1e 4854 {
74541ad4
AM		 4855 asection *osec;
4856
6366ff1e
MM		 4857 /* On Symbian OS, the data segment and text segement
4858 can be relocated independently. Therefore, we
4859 must indicate the segment to which this
4860 relocation is relative. The BPABI allows us to
4861 use any symbol in the right segment; we just use
4862 the section symbol as it is convenient. (We
4863 cannot use the symbol given by "h" directly as it
74541ad4
AM		 4864 will not appear in the dynamic symbol table.)
4865
4866 Note that the dynamic linker ignores the section
4867 symbol value, so we don't subtract osec->vma
4868 from the emitted reloc addend. */
10dbd1f3 4869 if (sym_sec)
74541ad4 4870 osec = sym_sec->output_section;
10dbd1f3 4871 else
74541ad4
AM		 4872 osec = input_section->output_section;
4873 symbol = elf_section_data (osec)->dynindx;
4874 if (symbol == 0)
4875 {
4876 struct elf_link_hash_table *htab = elf_hash_table (info);
4877
4878 if ((osec->flags & SEC_READONLY) == 0
4879 && htab->data_index_section != NULL)
4880 osec = htab->data_index_section;
4881 else
4882 osec = htab->text_index_section;
4883 symbol = elf_section_data (osec)->dynindx;
4884 }
6366ff1e
MM		 4885 BFD_ASSERT (symbol != 0);
4886 }
a16385dc
MM		 4887 else
4888 /* On SVR4-ish systems, the dynamic loader cannot
4889 relocate the text and data segments independently,
4890 so the symbol does not matter. */
4891 symbol = 0;
4892 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
00a97672
RS		 4893 if (globals->use_rel)
4894 relocate = TRUE;
4895 else
4896 outrel.r_addend += value;
252b5132 4897 }
f21f3fe0 4898
947216bf 4899 loc = sreloc->contents;
00a97672
RS		 4900 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
4901 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
9a5aca8c 4902
f21f3fe0 4903 /* If this reloc is against an external symbol, we do not want to
252b5132 4904 fiddle with the addend. Otherwise, we need to include the symbol
9b485d32 4905 value so that it becomes an addend for the dynamic reloc. */
252b5132
RH		 4906 if (! relocate)
4907 return bfd_reloc_ok;
9a5aca8c 4908
f21f3fe0 4909 return _bfd_final_link_relocate (howto, input_bfd, input_section,
252b5132
RH		 4910 contents, rel->r_offset, value,
4911 (bfd_vma) 0);
4912 }
4913 else switch (r_type)
4914 {
00a97672
RS		 4915 case R_ARM_ABS12:
4916 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4917
dfc5f959 4918 case R_ARM_XPC25: /* Arm BLX instruction. */
5b5bb741
PB		 4919 case R_ARM_CALL:
4920 case R_ARM_JUMP24:
dfc5f959 4921 case R_ARM_PC24: /* Arm B/BL instruction */
7359ea65 4922 case R_ARM_PLT32:
dfc5f959 4923 if (r_type == R_ARM_XPC25)
252b5132 4924 {
dfc5f959
NC		 4925 /* Check for Arm calling Arm function. */
4926 /* FIXME: Should we translate the instruction into a BL
4927 instruction instead ? */
4928 if (sym_flags != STT_ARM_TFUNC)
d003868e
AM		 4929 (*_bfd_error_handler)
4930 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4931 input_bfd,
4932 h ? h->root.root.string : "(local)");
dfc5f959 4933 }
39b41c9c 4934 else if (r_type != R_ARM_CALL || !globals->use_blx)
dfc5f959
NC		 4935 {
4936 /* Check for Arm calling Thumb function. */
4937 if (sym_flags == STT_ARM_TFUNC)
4938 {
f2a9dd69
DJ		 4939 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
4940 output_bfd, input_section,
4941 hit_data, sym_sec, rel->r_offset,
4942 signed_addend, value,
4943 error_message))
4944 return bfd_reloc_ok;
4945 else
4946 return bfd_reloc_dangerous;
dfc5f959 4947 }
252b5132 4948 }
ba96a88f 4949
dea514f5
PB		 4950 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4951 where:
4952 S is the address of the symbol in the relocation.
4953 P is address of the instruction being relocated.
4954 A is the addend (extracted from the instruction) in bytes.
4955
4956 S is held in 'value'.
4957 P is the base address of the section containing the
4958 instruction plus the offset of the reloc into that
4959 section, ie:
4960 (input_section->output_section->vma +
4961 input_section->output_offset +
4962 rel->r_offset).
4963 A is the addend, converted into bytes, ie:
4964 (signed_addend * 4)
4965
4966 Note: None of these operations have knowledge of the pipeline
4967 size of the processor, thus it is up to the assembler to
4968 encode this information into the addend. */
4969 value -= (input_section->output_section->vma
4970 + input_section->output_offset);
4971 value -= rel->r_offset;
4e7fd91e
PB		 4972 if (globals->use_rel)
4973 value += (signed_addend << howto->size);
4974 else
4975 /* RELA addends do not have to be adjusted by howto->size. */
4976 value += signed_addend;
23080146 4977
dcb5e6e6
NC		 4978 signed_addend = value;
4979 signed_addend >>= howto->rightshift;
9a5aca8c 4980
5ab79981
PB		 4981 /* A branch to an undefined weak symbol is turned into a jump to
4982 the next instruction. */
4983 if (h && h->root.type == bfd_link_hash_undefweak)
4984 {
4985 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
4986 | 0x0affffff;
4987 }
4988 else
59f2c4e7 4989 {
9b485d32 4990 /* Perform a signed range check. */
dcb5e6e6 4991 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
59f2c4e7
NC		 4992 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
4993 return bfd_reloc_overflow;
9a5aca8c 4994
5ab79981 4995 addend = (value & 2);
39b41c9c 4996
5ab79981
PB		 4997 value = (signed_addend & howto->dst_mask)
4998 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
39b41c9c 4999
5ab79981 5000 /* Set the H bit in the BLX instruction. */
39b41c9c 5001 if (sym_flags == STT_ARM_TFUNC)
39b41c9c 5002 {
5ab79981
PB		 5003 if (addend)
5004 value |= (1 << 24);
5005 else
5006 value &= ~(bfd_vma)(1 << 24);
5007 }
5008 if (r_type == R_ARM_CALL)
5009 {
5010 /* Select the correct instruction (BL or BLX). */
5011 if (sym_flags == STT_ARM_TFUNC)
5012 value |= (1 << 28);
5013 else
5014 {
5015 value &= ~(bfd_vma)(1 << 28);
5016 value |= (1 << 24);
5017 }
39b41c9c
PB		 5018 }
5019 }
252b5132 5020 break;
f21f3fe0 5021
252b5132
RH		 5022 case R_ARM_ABS32:
5023 value += addend;
5024 if (sym_flags == STT_ARM_TFUNC)
5025 value |= 1;
5026 break;
f21f3fe0 5027
bb224fc3
MS		 5028 case R_ARM_ABS32_NOI:
5029 value += addend;
5030 break;
5031
252b5132 5032 case R_ARM_REL32:
a8bc6c78
PB		 5033 value += addend;
5034 if (sym_flags == STT_ARM_TFUNC)
5035 value |= 1;
252b5132 5036 value -= (input_section->output_section->vma
62efb346 5037 + input_section->output_offset + rel->r_offset);
252b5132 5038 break;
eb043451 5039
bb224fc3
MS		 5040 case R_ARM_REL32_NOI:
5041 value += addend;
5042 value -= (input_section->output_section->vma
5043 + input_section->output_offset + rel->r_offset);
5044 break;
5045
eb043451
PB		 5046 case R_ARM_PREL31:
5047 value -= (input_section->output_section->vma
5048 + input_section->output_offset + rel->r_offset);
5049 value += signed_addend;
5050 if (! h || h->root.type != bfd_link_hash_undefweak)
5051 {
5052 /* Check for overflow */
5053 if ((value ^ (value >> 1)) & (1 << 30))
5054 return bfd_reloc_overflow;
5055 }
5056 value &= 0x7fffffff;
5057 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
5058 if (sym_flags == STT_ARM_TFUNC)
5059 value |= 1;
5060 break;
252b5132 5061 }
f21f3fe0 5062
252b5132
RH		 5063 bfd_put_32 (input_bfd, value, hit_data);
5064 return bfd_reloc_ok;
5065
5066 case R_ARM_ABS8:
5067 value += addend;
5068 if ((long) value > 0x7f || (long) value < -0x80)
5069 return bfd_reloc_overflow;
5070
5071 bfd_put_8 (input_bfd, value, hit_data);
5072 return bfd_reloc_ok;
5073
5074 case R_ARM_ABS16:
5075 value += addend;
5076
5077 if ((long) value > 0x7fff || (long) value < -0x8000)
5078 return bfd_reloc_overflow;
5079
5080 bfd_put_16 (input_bfd, value, hit_data);
5081 return bfd_reloc_ok;
5082
252b5132 5083 case R_ARM_THM_ABS5:
9b485d32 5084 /* Support ldr and str instructions for the thumb. */
4e7fd91e
PB		 5085 if (globals->use_rel)
5086 {
5087 /* Need to refetch addend. */
5088 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
5089 /* ??? Need to determine shift amount from operand size. */
5090 addend >>= howto->rightshift;
5091 }
252b5132
RH		 5092 value += addend;
5093
5094 /* ??? Isn't value unsigned? */
5095 if ((long) value > 0x1f || (long) value < -0x10)
5096 return bfd_reloc_overflow;
5097
5098 /* ??? Value needs to be properly shifted into place first. */
5099 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
5100 bfd_put_16 (input_bfd, value, hit_data);
5101 return bfd_reloc_ok;
5102
2cab6cc3
MS		 5103 case R_ARM_THM_ALU_PREL_11_0:
5104 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
5105 {
5106 bfd_vma insn;
5107 bfd_signed_vma relocation;
5108
5109 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
5110 | bfd_get_16 (input_bfd, hit_data + 2);
5111
5112 if (globals->use_rel)
5113 {
5114 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
5115 | ((insn & (1 << 26)) >> 15);
5116 if (insn & 0xf00000)
5117 signed_addend = -signed_addend;
5118 }
5119
5120 relocation = value + signed_addend;
5121 relocation -= (input_section->output_section->vma
5122 + input_section->output_offset
5123 + rel->r_offset);
5124
5125 value = abs (relocation);
5126
5127 if (value >= 0x1000)
5128 return bfd_reloc_overflow;
5129
5130 insn = (insn & 0xfb0f8f00) | (value & 0xff)
5131 | ((value & 0x700) << 4)
5132 | ((value & 0x800) << 15);
5133 if (relocation < 0)
5134 insn |= 0xa00000;
5135
5136 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5137 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5138
5139 return bfd_reloc_ok;
5140 }
5141
5142 case R_ARM_THM_PC12:
5143 /* Corresponds to: ldr.w reg, [pc, #offset]. */
5144 {
5145 bfd_vma insn;
5146 bfd_signed_vma relocation;
5147
5148 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
5149 | bfd_get_16 (input_bfd, hit_data + 2);
5150
5151 if (globals->use_rel)
5152 {
5153 signed_addend = insn & 0xfff;
5154 if (!(insn & (1 << 23)))
5155 signed_addend = -signed_addend;
5156 }
5157
5158 relocation = value + signed_addend;
5159 relocation -= (input_section->output_section->vma
5160 + input_section->output_offset
5161 + rel->r_offset);
5162
5163 value = abs (relocation);
5164
5165 if (value >= 0x1000)
5166 return bfd_reloc_overflow;
5167
5168 insn = (insn & 0xff7ff000) | value;
5169 if (relocation >= 0)
5170 insn |= (1 << 23);
5171
5172 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5173 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5174
5175 return bfd_reloc_ok;
5176 }
5177
dfc5f959 5178 case R_ARM_THM_XPC22:
c19d1205 5179 case R_ARM_THM_CALL:
bd97cb95 5180 case R_ARM_THM_JUMP24:
dfc5f959 5181 /* Thumb BL (branch long instruction). */
252b5132 5182 {
b34976b6 5183 bfd_vma relocation;
e95de063 5184 bfd_vma reloc_sign;
b34976b6
AM		 5185 bfd_boolean overflow = FALSE;
5186 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5187 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
e95de063
MS		 5188 bfd_signed_vma reloc_signed_max;
5189 bfd_signed_vma reloc_signed_min;
b34976b6 5190 bfd_vma check;
252b5132 5191 bfd_signed_vma signed_check;
e95de063
MS		 5192 int bitsize;
5193 int thumb2 = using_thumb2 (globals);
252b5132 5194
5ab79981
PB		 5195 /* A branch to an undefined weak symbol is turned into a jump to
5196 the next instruction. */
5197 if (h && h->root.type == bfd_link_hash_undefweak)
5198 {
5199 bfd_put_16 (input_bfd, 0xe000, hit_data);
5200 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
5201 return bfd_reloc_ok;
5202 }
5203
e95de063
MS		 5204 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
5205 with Thumb-1) involving the J1 and J2 bits. */
4e7fd91e
PB		 5206 if (globals->use_rel)
5207 {
e95de063
MS		 5208 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
5209 bfd_vma upper = upper_insn & 0x3ff;
5210 bfd_vma lower = lower_insn & 0x7ff;
5211 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
5212 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
5213 bfd_vma i1 = j1 ^ s ? 0 : 1;
5214 bfd_vma i2 = j2 ^ s ? 0 : 1;
5215
5216 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
5217 /* Sign extend. */
5218 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
5219
4e7fd91e
PB		 5220 signed_addend = addend;
5221 }
cb1afa5c 5222
dfc5f959
NC		 5223 if (r_type == R_ARM_THM_XPC22)
5224 {
5225 /* Check for Thumb to Thumb call. */
5226 /* FIXME: Should we translate the instruction into a BL
5227 instruction instead ? */
5228 if (sym_flags == STT_ARM_TFUNC)
d003868e
AM		 5229 (*_bfd_error_handler)
5230 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
5231 input_bfd,
5232 h ? h->root.root.string : "(local)");
dfc5f959
NC		 5233 }
5234 else
252b5132 5235 {
dfc5f959
NC		 5236 /* If it is not a call to Thumb, assume call to Arm.
5237 If it is a call relative to a section name, then it is not a
b7693d02
DJ		 5238 function call at all, but rather a long jump. Calls through
5239 the PLT do not require stubs. */
5240 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
5241 && (h == NULL || splt == NULL
5242 || h->plt.offset == (bfd_vma) -1))
dfc5f959 5243 {
bd97cb95 5244 if (globals->use_blx && r_type == R_ARM_THM_CALL)
39b41c9c
PB		 5245 {
5246 /* Convert BL to BLX. */
5247 lower_insn = (lower_insn & ~0x1000) | 0x0800;
5248 }
5249 else if (elf32_thumb_to_arm_stub
dfc5f959 5250 (info, sym_name, input_bfd, output_bfd, input_section,
f2a9dd69
DJ		 5251 hit_data, sym_sec, rel->r_offset, signed_addend, value,
5252 error_message))
dfc5f959
NC		 5253 return bfd_reloc_ok;
5254 else
5255 return bfd_reloc_dangerous;
5256 }
bd97cb95
DJ		 5257 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
5258 && r_type == R_ARM_THM_CALL)
39b41c9c
PB		 5259 {
5260 /* Make sure this is a BL. */
5261 lower_insn |= 0x1800;
5262 }
252b5132 5263 }
f21f3fe0 5264
b7693d02
DJ		 5265 /* Handle calls via the PLT. */
5266 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5267 {
5268 value = (splt->output_section->vma
5269 + splt->output_offset
5270 + h->plt.offset);
bd97cb95 5271 if (globals->use_blx && r_type == R_ARM_THM_CALL)
33bfe774
JB		 5272 {
5273 /* If the Thumb BLX instruction is available, convert the
5274 BL to a BLX instruction to call the ARM-mode PLT entry. */
39b41c9c 5275 lower_insn = (lower_insn & ~0x1000) | 0x0800;
33bfe774
JB		 5276 }
5277 else
5278 /* Target the Thumb stub before the ARM PLT entry. */
5279 value -= PLT_THUMB_STUB_SIZE;
0945cdfd 5280 *unresolved_reloc_p = FALSE;
b7693d02
DJ		 5281 }
5282
ba96a88f 5283 relocation = value + signed_addend;
f21f3fe0 5284
252b5132 5285 relocation -= (input_section->output_section->vma
ba96a88f
NC		 5286 + input_section->output_offset
5287 + rel->r_offset);
9a5aca8c 5288
252b5132
RH		 5289 check = relocation >> howto->rightshift;
5290
5291 /* If this is a signed value, the rightshift just dropped
5292 leading 1 bits (assuming twos complement). */
5293 if ((bfd_signed_vma) relocation >= 0)
5294 signed_check = check;
5295 else
5296 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
5297
e95de063
MS		 5298 /* Calculate the permissable maximum and minimum values for
5299 this relocation according to whether we're relocating for
5300 Thumb-2 or not. */
5301 bitsize = howto->bitsize;
5302 if (!thumb2)
5303 bitsize -= 2;
5304 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
5305 reloc_signed_min = ~reloc_signed_max;
5306
252b5132 5307 /* Assumes two's complement. */
ba96a88f 5308 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
b34976b6 5309 overflow = TRUE;
252b5132 5310
bd97cb95 5311 if ((lower_insn & 0x5000) == 0x4000)
c62e1cc3
NC		 5312 /* For a BLX instruction, make sure that the relocation is rounded up
5313 to a word boundary. This follows the semantics of the instruction
5314 which specifies that bit 1 of the target address will come from bit
5315 1 of the base address. */
5316 relocation = (relocation + 2) & ~ 3;
cb1afa5c 5317
e95de063
MS		 5318 /* Put RELOCATION back into the insn. Assumes two's complement.
5319 We use the Thumb-2 encoding, which is safe even if dealing with
5320 a Thumb-1 instruction by virtue of our overflow check above. */
5321 reloc_sign = (signed_check < 0) ? 1 : 0;
5322 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
5323 | ((relocation >> 12) & 0x3ff)
5324 | (reloc_sign << 10);
5325 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
5326 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
5327 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
5328 | ((relocation >> 1) & 0x7ff);
c62e1cc3 5329
252b5132
RH		 5330 /* Put the relocated value back in the object file: */
5331 bfd_put_16 (input_bfd, upper_insn, hit_data);
5332 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5333
5334 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5335 }
5336 break;
5337
c19d1205
ZW		 5338 case R_ARM_THM_JUMP19:
5339 /* Thumb32 conditional branch instruction. */
5340 {
5341 bfd_vma relocation;
5342 bfd_boolean overflow = FALSE;
5343 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5344 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
a00a1f35
MS		 5345 bfd_signed_vma reloc_signed_max = 0xffffe;
5346 bfd_signed_vma reloc_signed_min = -0x100000;
c19d1205
ZW		 5347 bfd_signed_vma signed_check;
5348
5349 /* Need to refetch the addend, reconstruct the top three bits,
5350 and squish the two 11 bit pieces together. */
5351 if (globals->use_rel)
5352 {
5353 bfd_vma S = (upper_insn & 0x0400) >> 10;
a00a1f35 5354 bfd_vma upper = (upper_insn & 0x003f);
c19d1205
ZW		 5355 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
5356 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
5357 bfd_vma lower = (lower_insn & 0x07ff);
5358
a00a1f35
MS		 5359 upper |= J1 << 6;
5360 upper |= J2 << 7;
5361 upper |= (!S) << 8;
c19d1205
ZW		 5362 upper -= 0x0100; /* Sign extend. */
5363
5364 addend = (upper << 12) | (lower << 1);
5365 signed_addend = addend;
5366 }
5367
bd97cb95
DJ		 5368 /* Handle calls via the PLT. */
5369 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5370 {
5371 value = (splt->output_section->vma
5372 + splt->output_offset
5373 + h->plt.offset);
5374 /* Target the Thumb stub before the ARM PLT entry. */
5375 value -= PLT_THUMB_STUB_SIZE;
5376 *unresolved_reloc_p = FALSE;
5377 }
5378
c19d1205
ZW		 5379 /* ??? Should handle interworking? GCC might someday try to
5380 use this for tail calls. */
5381
5382 relocation = value + signed_addend;
5383 relocation -= (input_section->output_section->vma
5384 + input_section->output_offset
5385 + rel->r_offset);
a00a1f35 5386 signed_check = (bfd_signed_vma) relocation;
c19d1205 5387
c19d1205
ZW		 5388 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5389 overflow = TRUE;
5390
5391 /* Put RELOCATION back into the insn. */
5392 {
5393 bfd_vma S = (relocation & 0x00100000) >> 20;
5394 bfd_vma J2 = (relocation & 0x00080000) >> 19;
5395 bfd_vma J1 = (relocation & 0x00040000) >> 18;
5396 bfd_vma hi = (relocation & 0x0003f000) >> 12;
5397 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
5398
a00a1f35 5399 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
c19d1205
ZW		 5400 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
5401 }
5402
5403 /* Put the relocated value back in the object file: */
5404 bfd_put_16 (input_bfd, upper_insn, hit_data);
5405 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5406
5407 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5408 }
5409
5410 case R_ARM_THM_JUMP11:
5411 case R_ARM_THM_JUMP8:
5412 case R_ARM_THM_JUMP6:
51c5503b
NC		 5413 /* Thumb B (branch) instruction). */
5414 {
6cf9e9fe 5415 bfd_signed_vma relocation;
51c5503b
NC		 5416 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
5417 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
51c5503b
NC		 5418 bfd_signed_vma signed_check;
5419
c19d1205
ZW		 5420 /* CZB cannot jump backward. */
5421 if (r_type == R_ARM_THM_JUMP6)
5422 reloc_signed_min = 0;
5423
4e7fd91e 5424 if (globals->use_rel)
6cf9e9fe 5425 {
4e7fd91e
PB		 5426 /* Need to refetch addend. */
5427 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
5428 if (addend & ((howto->src_mask + 1) >> 1))
5429 {
5430 signed_addend = -1;
5431 signed_addend &= ~ howto->src_mask;
5432 signed_addend |= addend;
5433 }
5434 else
5435 signed_addend = addend;
5436 /* The value in the insn has been right shifted. We need to
5437 undo this, so that we can perform the address calculation
5438 in terms of bytes. */
5439 signed_addend <<= howto->rightshift;
6cf9e9fe 5440 }
6cf9e9fe 5441 relocation = value + signed_addend;
51c5503b
NC		 5442
5443 relocation -= (input_section->output_section->vma
5444 + input_section->output_offset
5445 + rel->r_offset);
5446
6cf9e9fe
NC		 5447 relocation >>= howto->rightshift;
5448 signed_check = relocation;
c19d1205
ZW		 5449
5450 if (r_type == R_ARM_THM_JUMP6)
5451 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
5452 else
5453 relocation &= howto->dst_mask;
51c5503b 5454 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
cedb70c5 5455
51c5503b
NC		 5456 bfd_put_16 (input_bfd, relocation, hit_data);
5457
5458 /* Assumes two's complement. */
5459 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5460 return bfd_reloc_overflow;
5461
5462 return bfd_reloc_ok;
5463 }
cedb70c5 5464
8375c36b
PB		 5465 case R_ARM_ALU_PCREL7_0:
5466 case R_ARM_ALU_PCREL15_8:
5467 case R_ARM_ALU_PCREL23_15:
5468 {
5469 bfd_vma insn;
5470 bfd_vma relocation;
5471
5472 insn = bfd_get_32 (input_bfd, hit_data);
4e7fd91e
PB		 5473 if (globals->use_rel)
5474 {
5475 /* Extract the addend. */
5476 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
5477 signed_addend = addend;
5478 }
8375c36b
PB		 5479 relocation = value + signed_addend;
5480
5481 relocation -= (input_section->output_section->vma
5482 + input_section->output_offset
5483 + rel->r_offset);
5484 insn = (insn & ~0xfff)
5485 | ((howto->bitpos << 7) & 0xf00)
5486 | ((relocation >> howto->bitpos) & 0xff);
5487 bfd_put_32 (input_bfd, value, hit_data);
5488 }
5489 return bfd_reloc_ok;
5490
252b5132
RH		 5491 case R_ARM_GNU_VTINHERIT:
5492 case R_ARM_GNU_VTENTRY:
5493 return bfd_reloc_ok;
5494
c19d1205 5495 case R_ARM_GOTOFF32:
252b5132
RH		 5496 /* Relocation is relative to the start of the
5497 global offset table. */
5498
5499 BFD_ASSERT (sgot != NULL);
5500 if (sgot == NULL)
5501 return bfd_reloc_notsupported;
9a5aca8c 5502
cedb70c5 5503 /* If we are addressing a Thumb function, we need to adjust the
ee29b9fb
RE		 5504 address by one, so that attempts to call the function pointer will
5505 correctly interpret it as Thumb code. */
5506 if (sym_flags == STT_ARM_TFUNC)
5507 value += 1;
5508
252b5132
RH		 5509 /* Note that sgot->output_offset is not involved in this
5510 calculation. We always want the start of .got. If we
5511 define _GLOBAL_OFFSET_TABLE in a different way, as is
5512 permitted by the ABI, we might have to change this
9b485d32 5513 calculation. */
252b5132 5514 value -= sgot->output_section->vma;
f21f3fe0 5515 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 5516 contents, rel->r_offset, value,
00a97672 5517 rel->r_addend);
252b5132
RH		 5518
5519 case R_ARM_GOTPC:
a7c10850 5520 /* Use global offset table as symbol value. */
252b5132 5521 BFD_ASSERT (sgot != NULL);
f21f3fe0 5522
252b5132
RH		 5523 if (sgot == NULL)
5524 return bfd_reloc_notsupported;
5525
0945cdfd 5526 *unresolved_reloc_p = FALSE;
252b5132 5527 value = sgot->output_section->vma;
f21f3fe0 5528 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 5529 contents, rel->r_offset, value,
00a97672 5530 rel->r_addend);
f21f3fe0 5531
252b5132 5532 case R_ARM_GOT32:
eb043451 5533 case R_ARM_GOT_PREL:
252b5132 5534 /* Relocation is to the entry for this symbol in the
9b485d32 5535 global offset table. */
252b5132
RH		 5536 if (sgot == NULL)
5537 return bfd_reloc_notsupported;
f21f3fe0 5538
252b5132
RH		 5539 if (h != NULL)
5540 {
5541 bfd_vma off;
5e681ec4 5542 bfd_boolean dyn;
f21f3fe0 5543
252b5132
RH		 5544 off = h->got.offset;
5545 BFD_ASSERT (off != (bfd_vma) -1);
5e681ec4 5546 dyn = globals->root.dynamic_sections_created;
f21f3fe0 5547
5e681ec4 5548 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
50d6c878 5549 || (info->shared
5e681ec4
PB		 5550 && SYMBOL_REFERENCES_LOCAL (info, h))
5551 || (ELF_ST_VISIBILITY (h->other)
5552 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 5553 {
5554 /* This is actually a static link, or it is a -Bsymbolic link
5555 and the symbol is defined locally. We must initialize this
5556 entry in the global offset table. Since the offset must
5557 always be a multiple of 4, we use the least significant bit
5558 to record whether we have initialized it already.
f21f3fe0 5559
00a97672 5560 When doing a dynamic link, we create a .rel(a).got relocation
f21f3fe0 5561 entry to initialize the value. This is done in the
9b485d32 5562 finish_dynamic_symbol routine. */
252b5132
RH		 5563 if ((off & 1) != 0)
5564 off &= ~1;
5565 else
5566 {
ee29b9fb
RE		 5567 /* If we are addressing a Thumb function, we need to
5568 adjust the address by one, so that attempts to
5569 call the function pointer will correctly
5570 interpret it as Thumb code. */
5571 if (sym_flags == STT_ARM_TFUNC)
5572 value |= 1;
5573
252b5132
RH		 5574 bfd_put_32 (output_bfd, value, sgot->contents + off);
5575 h->got.offset |= 1;
5576 }
5577 }
0945cdfd
DJ		 5578 else
5579 *unresolved_reloc_p = FALSE;
f21f3fe0 5580
252b5132
RH		 5581 value = sgot->output_offset + off;
5582 }
5583 else
5584 {
5585 bfd_vma off;
f21f3fe0 5586
252b5132
RH		 5587 BFD_ASSERT (local_got_offsets != NULL &&
5588 local_got_offsets[r_symndx] != (bfd_vma) -1);
f21f3fe0 5589
252b5132 5590 off = local_got_offsets[r_symndx];
f21f3fe0 5591
252b5132
RH		 5592 /* The offset must always be a multiple of 4. We use the
5593 least significant bit to record whether we have already
9b485d32 5594 generated the necessary reloc. */
252b5132
RH		 5595 if ((off & 1) != 0)
5596 off &= ~1;
5597 else
5598 {
b7693d02
DJ		 5599 /* If we are addressing a Thumb function, we need to
5600 adjust the address by one, so that attempts to
5601 call the function pointer will correctly
5602 interpret it as Thumb code. */
5603 if (sym_flags == STT_ARM_TFUNC)
5604 value |= 1;
5605
00a97672
RS		 5606 if (globals->use_rel)
5607 bfd_put_32 (output_bfd, value, sgot->contents + off);
f21f3fe0 5608
252b5132
RH		 5609 if (info->shared)
5610 {
5611 asection * srelgot;
947216bf
AM		 5612 Elf_Internal_Rela outrel;
5613 bfd_byte *loc;
f21f3fe0 5614
00a97672
RS		 5615 srelgot = (bfd_get_section_by_name
5616 (dynobj, RELOC_SECTION (globals, ".got")));
252b5132 5617 BFD_ASSERT (srelgot != NULL);
f21f3fe0 5618
00a97672 5619 outrel.r_addend = addend + value;
252b5132 5620 outrel.r_offset = (sgot->output_section->vma
f21f3fe0 5621 + sgot->output_offset
252b5132
RH		 5622 + off);
5623 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
947216bf 5624 loc = srelgot->contents;
00a97672
RS		 5625 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
5626 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
252b5132 5627 }
f21f3fe0 5628
252b5132
RH		 5629 local_got_offsets[r_symndx] |= 1;
5630 }
f21f3fe0 5631
252b5132
RH		 5632 value = sgot->output_offset + off;
5633 }
eb043451
PB		 5634 if (r_type != R_ARM_GOT32)
5635 value += sgot->output_section->vma;
9a5aca8c 5636
f21f3fe0 5637 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 5638 contents, rel->r_offset, value,
00a97672 5639 rel->r_addend);
f21f3fe0 5640
ba93b8ac
DJ		 5641 case R_ARM_TLS_LDO32:
5642 value = value - dtpoff_base (info);
5643
5644 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS		 5645 contents, rel->r_offset, value,
5646 rel->r_addend);
ba93b8ac
DJ		 5647
5648 case R_ARM_TLS_LDM32:
5649 {
5650 bfd_vma off;
5651
5652 if (globals->sgot == NULL)
5653 abort ();
5654
5655 off = globals->tls_ldm_got.offset;
5656
5657 if ((off & 1) != 0)
5658 off &= ~1;
5659 else
5660 {
5661 /* If we don't know the module number, create a relocation
5662 for it. */
5663 if (info->shared)
5664 {
5665 Elf_Internal_Rela outrel;
5666 bfd_byte *loc;
5667
5668 if (globals->srelgot == NULL)
5669 abort ();
5670
00a97672 5671 outrel.r_addend = 0;
ba93b8ac
DJ		 5672 outrel.r_offset = (globals->sgot->output_section->vma
5673 + globals->sgot->output_offset + off);
5674 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
5675
00a97672
RS		 5676 if (globals->use_rel)
5677 bfd_put_32 (output_bfd, outrel.r_addend,
5678 globals->sgot->contents + off);
ba93b8ac
DJ		 5679
5680 loc = globals->srelgot->contents;
00a97672
RS		 5681 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
5682 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac
DJ		 5683 }
5684 else
5685 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
5686
5687 globals->tls_ldm_got.offset |= 1;
5688 }
5689
5690 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5691 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5692
5693 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5694 contents, rel->r_offset, value,
00a97672 5695 rel->r_addend);
ba93b8ac
DJ		 5696 }
5697
5698 case R_ARM_TLS_GD32:
5699 case R_ARM_TLS_IE32:
5700 {
5701 bfd_vma off;
5702 int indx;
5703 char tls_type;
5704
5705 if (globals->sgot == NULL)
5706 abort ();
5707
5708 indx = 0;
5709 if (h != NULL)
5710 {
5711 bfd_boolean dyn;
5712 dyn = globals->root.dynamic_sections_created;
5713 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5714 && (!info->shared
5715 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5716 {
5717 *unresolved_reloc_p = FALSE;
5718 indx = h->dynindx;
5719 }
5720 off = h->got.offset;
5721 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
5722 }
5723 else
5724 {
5725 if (local_got_offsets == NULL)
5726 abort ();
5727 off = local_got_offsets[r_symndx];
5728 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
5729 }
5730
5731 if (tls_type == GOT_UNKNOWN)
5732 abort ();
5733
5734 if ((off & 1) != 0)
5735 off &= ~1;
5736 else
5737 {
5738 bfd_boolean need_relocs = FALSE;
5739 Elf_Internal_Rela outrel;
5740 bfd_byte *loc = NULL;
5741 int cur_off = off;
5742
5743 /* The GOT entries have not been initialized yet. Do it
5744 now, and emit any relocations. If both an IE GOT and a
5745 GD GOT are necessary, we emit the GD first. */
5746
5747 if ((info->shared || indx != 0)
5748 && (h == NULL
5749 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5750 || h->root.type != bfd_link_hash_undefweak))
5751 {
5752 need_relocs = TRUE;
5753 if (globals->srelgot == NULL)
5754 abort ();
5755 loc = globals->srelgot->contents;
00a97672 5756 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
ba93b8ac
DJ		 5757 }
5758
5759 if (tls_type & GOT_TLS_GD)
5760 {
5761 if (need_relocs)
5762 {
00a97672 5763 outrel.r_addend = 0;
ba93b8ac 5764 outrel.r_offset = (globals->sgot->output_section->vma
00a97672
RS		 5765 + globals->sgot->output_offset
5766 + cur_off);
ba93b8ac 5767 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
ba93b8ac 5768
00a97672
RS		 5769 if (globals->use_rel)
5770 bfd_put_32 (output_bfd, outrel.r_addend,
5771 globals->sgot->contents + cur_off);
5772
5773 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 5774 globals->srelgot->reloc_count++;
00a97672 5775 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 5776
5777 if (indx == 0)
5778 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5779 globals->sgot->contents + cur_off + 4);
5780 else
5781 {
00a97672 5782 outrel.r_addend = 0;
ba93b8ac
DJ		 5783 outrel.r_info = ELF32_R_INFO (indx,
5784 R_ARM_TLS_DTPOFF32);
5785 outrel.r_offset += 4;
00a97672
RS		 5786
5787 if (globals->use_rel)
5788 bfd_put_32 (output_bfd, outrel.r_addend,
5789 globals->sgot->contents + cur_off + 4);
5790
5791
5792 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 5793 globals->srelgot->reloc_count++;
00a97672 5794 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 5795 }
5796 }
5797 else
5798 {
5799 /* If we are not emitting relocations for a
5800 general dynamic reference, then we must be in a
5801 static link or an executable link with the
5802 symbol binding locally. Mark it as belonging
5803 to module 1, the executable. */
5804 bfd_put_32 (output_bfd, 1,
5805 globals->sgot->contents + cur_off);
5806 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5807 globals->sgot->contents + cur_off + 4);
5808 }
5809
5810 cur_off += 8;
5811 }
5812
5813 if (tls_type & GOT_TLS_IE)
5814 {
5815 if (need_relocs)
5816 {
00a97672
RS		 5817 if (indx == 0)
5818 outrel.r_addend = value - dtpoff_base (info);
5819 else
5820 outrel.r_addend = 0;
ba93b8ac
DJ		 5821 outrel.r_offset = (globals->sgot->output_section->vma
5822 + globals->sgot->output_offset
5823 + cur_off);
5824 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
5825
00a97672
RS		 5826 if (globals->use_rel)
5827 bfd_put_32 (output_bfd, outrel.r_addend,
ba93b8ac
DJ		 5828 globals->sgot->contents + cur_off);
5829
00a97672 5830 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 5831 globals->srelgot->reloc_count++;
00a97672 5832 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 5833 }
5834 else
5835 bfd_put_32 (output_bfd, tpoff (info, value),
5836 globals->sgot->contents + cur_off);
5837 cur_off += 4;
5838 }
5839
5840 if (h != NULL)
5841 h->got.offset |= 1;
5842 else
5843 local_got_offsets[r_symndx] |= 1;
5844 }
5845
5846 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
5847 off += 8;
5848 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5849 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5850
5851 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5852 contents, rel->r_offset, value,
00a97672 5853 rel->r_addend);
ba93b8ac
DJ		 5854 }
5855
5856 case R_ARM_TLS_LE32:
5857 if (info->shared)
5858 {
5859 (*_bfd_error_handler)
5860 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5861 input_bfd, input_section,
5862 (long) rel->r_offset, howto->name);
5863 return FALSE;
5864 }
5865 else
5866 value = tpoff (info, value);
5867
5868 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS		 5869 contents, rel->r_offset, value,
5870 rel->r_addend);
ba93b8ac 5871
319850b4
JB		 5872 case R_ARM_V4BX:
5873 if (globals->fix_v4bx)
845b51d6
PB		 5874 {
5875 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
319850b4 5876
845b51d6
PB		 5877 /* Ensure that we have a BX instruction. */
5878 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
319850b4 5879
845b51d6
PB		 5880 if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
5881 {
5882 /* Branch to veneer. */
5883 bfd_vma glue_addr;
5884 glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
5885 glue_addr -= input_section->output_section->vma
5886 + input_section->output_offset
5887 + rel->r_offset + 8;
5888 insn = (insn & 0xf0000000) | 0x0a000000
5889 | ((glue_addr >> 2) & 0x00ffffff);
5890 }
5891 else
5892 {
5893 /* Preserve Rm (lowest four bits) and the condition code
5894 (highest four bits). Other bits encode MOV PC,Rm. */
5895 insn = (insn & 0xf000000f) | 0x01a0f000;
5896 }
319850b4 5897
845b51d6
PB		 5898 bfd_put_32 (input_bfd, insn, hit_data);
5899 }
319850b4
JB		 5900 return bfd_reloc_ok;
5901
b6895b4f
PB		 5902 case R_ARM_MOVW_ABS_NC:
5903 case R_ARM_MOVT_ABS:
5904 case R_ARM_MOVW_PREL_NC:
5905 case R_ARM_MOVT_PREL:
92f5d02b
MS		 5906 /* Until we properly support segment-base-relative addressing then
5907 we assume the segment base to be zero, as for the group relocations.
5908 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5909 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5910 case R_ARM_MOVW_BREL_NC:
5911 case R_ARM_MOVW_BREL:
5912 case R_ARM_MOVT_BREL:
b6895b4f
PB		 5913 {
5914 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5915
5916 if (globals->use_rel)
5917 {
5918 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
5919 signed_addend = (addend ^ 0x10000) - 0x10000;
5920 }
92f5d02b 5921
b6895b4f 5922 value += signed_addend;
b6895b4f
PB		 5923
5924 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
5925 value -= (input_section->output_section->vma
5926 + input_section->output_offset + rel->r_offset);
5927
92f5d02b
MS		 5928 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
5929 return bfd_reloc_overflow;
5930
5931 if (sym_flags == STT_ARM_TFUNC)
5932 value |= 1;
5933
5934 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
5935 || r_type == R_ARM_MOVT_BREL)
b6895b4f
PB		 5936 value >>= 16;
5937
5938 insn &= 0xfff0f000;
5939 insn |= value & 0xfff;
5940 insn |= (value & 0xf000) << 4;
5941 bfd_put_32 (input_bfd, insn, hit_data);
5942 }
5943 return bfd_reloc_ok;
5944
5945 case R_ARM_THM_MOVW_ABS_NC:
5946 case R_ARM_THM_MOVT_ABS:
5947 case R_ARM_THM_MOVW_PREL_NC:
5948 case R_ARM_THM_MOVT_PREL:
92f5d02b
MS		 5949 /* Until we properly support segment-base-relative addressing then
5950 we assume the segment base to be zero, as for the above relocations.
5951 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5952 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5953 as R_ARM_THM_MOVT_ABS. */
5954 case R_ARM_THM_MOVW_BREL_NC:
5955 case R_ARM_THM_MOVW_BREL:
5956 case R_ARM_THM_MOVT_BREL:
b6895b4f
PB		 5957 {
5958 bfd_vma insn;
5959
5960 insn = bfd_get_16 (input_bfd, hit_data) << 16;
5961 insn |= bfd_get_16 (input_bfd, hit_data + 2);
5962
5963 if (globals->use_rel)
5964 {
5965 addend = ((insn >> 4) & 0xf000)
5966 | ((insn >> 15) & 0x0800)
5967 | ((insn >> 4) & 0x0700)
5968 | (insn & 0x00ff);
5969 signed_addend = (addend ^ 0x10000) - 0x10000;
5970 }
92f5d02b 5971
b6895b4f 5972 value += signed_addend;
b6895b4f
PB		 5973
5974 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
5975 value -= (input_section->output_section->vma
5976 + input_section->output_offset + rel->r_offset);
5977
92f5d02b
MS		 5978 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
5979 return bfd_reloc_overflow;
5980
5981 if (sym_flags == STT_ARM_TFUNC)
5982 value |= 1;
5983
5984 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
5985 || r_type == R_ARM_THM_MOVT_BREL)
b6895b4f
PB		 5986 value >>= 16;
5987
5988 insn &= 0xfbf08f00;
5989 insn |= (value & 0xf000) << 4;
5990 insn |= (value & 0x0800) << 15;
5991 insn |= (value & 0x0700) << 4;
5992 insn |= (value & 0x00ff);
5993
5994 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5995 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5996 }
5997 return bfd_reloc_ok;
5998
4962c51a
MS		 5999 case R_ARM_ALU_PC_G0_NC:
6000 case R_ARM_ALU_PC_G1_NC:
6001 case R_ARM_ALU_PC_G0:
6002 case R_ARM_ALU_PC_G1:
6003 case R_ARM_ALU_PC_G2:
6004 case R_ARM_ALU_SB_G0_NC:
6005 case R_ARM_ALU_SB_G1_NC:
6006 case R_ARM_ALU_SB_G0:
6007 case R_ARM_ALU_SB_G1:
6008 case R_ARM_ALU_SB_G2:
6009 {
6010 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6011 bfd_vma pc = input_section->output_section->vma
6012 + input_section->output_offset + rel->r_offset;
6013 /* sb should be the origin of the *segment* containing the symbol.
6014 It is not clear how to obtain this OS-dependent value, so we
6015 make an arbitrary choice of zero. */
6016 bfd_vma sb = 0;
6017 bfd_vma residual;
6018 bfd_vma g_n;
6019 bfd_signed_vma signed_value;
6020 int group = 0;
6021
6022 /* Determine which group of bits to select. */
6023 switch (r_type)
6024 {
6025 case R_ARM_ALU_PC_G0_NC:
6026 case R_ARM_ALU_PC_G0:
6027 case R_ARM_ALU_SB_G0_NC:
6028 case R_ARM_ALU_SB_G0:
6029 group = 0;
6030 break;
6031
6032 case R_ARM_ALU_PC_G1_NC:
6033 case R_ARM_ALU_PC_G1:
6034 case R_ARM_ALU_SB_G1_NC:
6035 case R_ARM_ALU_SB_G1:
6036 group = 1;
6037 break;
6038
6039 case R_ARM_ALU_PC_G2:
6040 case R_ARM_ALU_SB_G2:
6041 group = 2;
6042 break;
6043
6044 default:
6045 abort();
6046 }
6047
6048 /* If REL, extract the addend from the insn. If RELA, it will
6049 have already been fetched for us. */
6050 if (globals->use_rel)
6051 {
6052 int negative;
6053 bfd_vma constant = insn & 0xff;
6054 bfd_vma rotation = (insn & 0xf00) >> 8;
6055
6056 if (rotation == 0)
6057 signed_addend = constant;
6058 else
6059 {
6060 /* Compensate for the fact that in the instruction, the
6061 rotation is stored in multiples of 2 bits. */
6062 rotation *= 2;
6063
6064 /* Rotate "constant" right by "rotation" bits. */
6065 signed_addend = (constant >> rotation) |
6066 (constant << (8 * sizeof (bfd_vma) - rotation));
6067 }
6068
6069 /* Determine if the instruction is an ADD or a SUB.
6070 (For REL, this determines the sign of the addend.) */
6071 negative = identify_add_or_sub (insn);
6072 if (negative == 0)
6073 {
6074 (*_bfd_error_handler)
6075 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
6076 input_bfd, input_section,
6077 (long) rel->r_offset, howto->name);
6078 return bfd_reloc_overflow;
6079 }
6080
6081 signed_addend *= negative;
6082 }
6083
6084 /* Compute the value (X) to go in the place. */
6085 if (r_type == R_ARM_ALU_PC_G0_NC
6086 || r_type == R_ARM_ALU_PC_G1_NC
6087 || r_type == R_ARM_ALU_PC_G0
6088 || r_type == R_ARM_ALU_PC_G1
6089 || r_type == R_ARM_ALU_PC_G2)
6090 /* PC relative. */
6091 signed_value = value - pc + signed_addend;
6092 else
6093 /* Section base relative. */
6094 signed_value = value - sb + signed_addend;
6095
6096 /* If the target symbol is a Thumb function, then set the
6097 Thumb bit in the address. */
6098 if (sym_flags == STT_ARM_TFUNC)
6099 signed_value |= 1;
6100
6101 /* Calculate the value of the relevant G_n, in encoded
6102 constant-with-rotation format. */
6103 g_n = calculate_group_reloc_mask (abs (signed_value), group,
6104 &residual);
6105
6106 /* Check for overflow if required. */
6107 if ((r_type == R_ARM_ALU_PC_G0
6108 || r_type == R_ARM_ALU_PC_G1
6109 || r_type == R_ARM_ALU_PC_G2
6110 || r_type == R_ARM_ALU_SB_G0
6111 || r_type == R_ARM_ALU_SB_G1
6112 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
6113 {
6114 (*_bfd_error_handler)
6115 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6116 input_bfd, input_section,
6117 (long) rel->r_offset, abs (signed_value), howto->name);
6118 return bfd_reloc_overflow;
6119 }
6120
6121 /* Mask out the value and the ADD/SUB part of the opcode; take care
6122 not to destroy the S bit. */
6123 insn &= 0xff1ff000;
6124
6125 /* Set the opcode according to whether the value to go in the
6126 place is negative. */
6127 if (signed_value < 0)
6128 insn |= 1 << 22;
6129 else
6130 insn |= 1 << 23;
6131
6132 /* Encode the offset. */
6133 insn |= g_n;
6134
6135 bfd_put_32 (input_bfd, insn, hit_data);
6136 }
6137 return bfd_reloc_ok;
6138
6139 case R_ARM_LDR_PC_G0:
6140 case R_ARM_LDR_PC_G1:
6141 case R_ARM_LDR_PC_G2:
6142 case R_ARM_LDR_SB_G0:
6143 case R_ARM_LDR_SB_G1:
6144 case R_ARM_LDR_SB_G2:
6145 {
6146 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6147 bfd_vma pc = input_section->output_section->vma
6148 + input_section->output_offset + rel->r_offset;
6149 bfd_vma sb = 0; /* See note above. */
6150 bfd_vma residual;
6151 bfd_signed_vma signed_value;
6152 int group = 0;
6153
6154 /* Determine which groups of bits to calculate. */
6155 switch (r_type)
6156 {
6157 case R_ARM_LDR_PC_G0:
6158 case R_ARM_LDR_SB_G0:
6159 group = 0;
6160 break;
6161
6162 case R_ARM_LDR_PC_G1:
6163 case R_ARM_LDR_SB_G1:
6164 group = 1;
6165 break;
6166
6167 case R_ARM_LDR_PC_G2:
6168 case R_ARM_LDR_SB_G2:
6169 group = 2;
6170 break;
6171
6172 default:
6173 abort();
6174 }
6175
6176 /* If REL, extract the addend from the insn. If RELA, it will
6177 have already been fetched for us. */
6178 if (globals->use_rel)
6179 {
6180 int negative = (insn & (1 << 23)) ? 1 : -1;
6181 signed_addend = negative * (insn & 0xfff);
6182 }
6183
6184 /* Compute the value (X) to go in the place. */
6185 if (r_type == R_ARM_LDR_PC_G0
6186 || r_type == R_ARM_LDR_PC_G1
6187 || r_type == R_ARM_LDR_PC_G2)
6188 /* PC relative. */
6189 signed_value = value - pc + signed_addend;
6190 else
6191 /* Section base relative. */
6192 signed_value = value - sb + signed_addend;
6193
6194 /* Calculate the value of the relevant G_{n-1} to obtain
6195 the residual at that stage. */
6196 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6197
6198 /* Check for overflow. */
6199 if (residual >= 0x1000)
6200 {
6201 (*_bfd_error_handler)
6202 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6203 input_bfd, input_section,
6204 (long) rel->r_offset, abs (signed_value), howto->name);
6205 return bfd_reloc_overflow;
6206 }
6207
6208 /* Mask out the value and U bit. */
6209 insn &= 0xff7ff000;
6210
6211 /* Set the U bit if the value to go in the place is non-negative. */
6212 if (signed_value >= 0)
6213 insn |= 1 << 23;
6214
6215 /* Encode the offset. */
6216 insn |= residual;
6217
6218 bfd_put_32 (input_bfd, insn, hit_data);
6219 }
6220 return bfd_reloc_ok;
6221
6222 case R_ARM_LDRS_PC_G0:
6223 case R_ARM_LDRS_PC_G1:
6224 case R_ARM_LDRS_PC_G2:
6225 case R_ARM_LDRS_SB_G0:
6226 case R_ARM_LDRS_SB_G1:
6227 case R_ARM_LDRS_SB_G2:
6228 {
6229 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6230 bfd_vma pc = input_section->output_section->vma
6231 + input_section->output_offset + rel->r_offset;
6232 bfd_vma sb = 0; /* See note above. */
6233 bfd_vma residual;
6234 bfd_signed_vma signed_value;
6235 int group = 0;
6236
6237 /* Determine which groups of bits to calculate. */
6238 switch (r_type)
6239 {
6240 case R_ARM_LDRS_PC_G0:
6241 case R_ARM_LDRS_SB_G0:
6242 group = 0;
6243 break;
6244
6245 case R_ARM_LDRS_PC_G1:
6246 case R_ARM_LDRS_SB_G1:
6247 group = 1;
6248 break;
6249
6250 case R_ARM_LDRS_PC_G2:
6251 case R_ARM_LDRS_SB_G2:
6252 group = 2;
6253 break;
6254
6255 default:
6256 abort();
6257 }
6258
6259 /* If REL, extract the addend from the insn. If RELA, it will
6260 have already been fetched for us. */
6261 if (globals->use_rel)
6262 {
6263 int negative = (insn & (1 << 23)) ? 1 : -1;
6264 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
6265 }
6266
6267 /* Compute the value (X) to go in the place. */
6268 if (r_type == R_ARM_LDRS_PC_G0
6269 || r_type == R_ARM_LDRS_PC_G1
6270 || r_type == R_ARM_LDRS_PC_G2)
6271 /* PC relative. */
6272 signed_value = value - pc + signed_addend;
6273 else
6274 /* Section base relative. */
6275 signed_value = value - sb + signed_addend;
6276
6277 /* Calculate the value of the relevant G_{n-1} to obtain
6278 the residual at that stage. */
6279 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6280
6281 /* Check for overflow. */
6282 if (residual >= 0x100)
6283 {
6284 (*_bfd_error_handler)
6285 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6286 input_bfd, input_section,
6287 (long) rel->r_offset, abs (signed_value), howto->name);
6288 return bfd_reloc_overflow;
6289 }
6290
6291 /* Mask out the value and U bit. */
6292 insn &= 0xff7ff0f0;
6293
6294 /* Set the U bit if the value to go in the place is non-negative. */
6295 if (signed_value >= 0)
6296 insn |= 1 << 23;
6297
6298 /* Encode the offset. */
6299 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
6300
6301 bfd_put_32 (input_bfd, insn, hit_data);
6302 }
6303 return bfd_reloc_ok;
6304
6305 case R_ARM_LDC_PC_G0:
6306 case R_ARM_LDC_PC_G1:
6307 case R_ARM_LDC_PC_G2:
6308 case R_ARM_LDC_SB_G0:
6309 case R_ARM_LDC_SB_G1:
6310 case R_ARM_LDC_SB_G2:
6311 {
6312 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6313 bfd_vma pc = input_section->output_section->vma
6314 + input_section->output_offset + rel->r_offset;
6315 bfd_vma sb = 0; /* See note above. */
6316 bfd_vma residual;
6317 bfd_signed_vma signed_value;
6318 int group = 0;
6319
6320 /* Determine which groups of bits to calculate. */
6321 switch (r_type)
6322 {
6323 case R_ARM_LDC_PC_G0:
6324 case R_ARM_LDC_SB_G0:
6325 group = 0;
6326 break;
6327
6328 case R_ARM_LDC_PC_G1:
6329 case R_ARM_LDC_SB_G1:
6330 group = 1;
6331 break;
6332
6333 case R_ARM_LDC_PC_G2:
6334 case R_ARM_LDC_SB_G2:
6335 group = 2;
6336 break;
6337
6338 default:
6339 abort();
6340 }
6341
6342 /* If REL, extract the addend from the insn. If RELA, it will
6343 have already been fetched for us. */
6344 if (globals->use_rel)
6345 {
6346 int negative = (insn & (1 << 23)) ? 1 : -1;
6347 signed_addend = negative * ((insn & 0xff) << 2);
6348 }
6349
6350 /* Compute the value (X) to go in the place. */
6351 if (r_type == R_ARM_LDC_PC_G0
6352 || r_type == R_ARM_LDC_PC_G1
6353 || r_type == R_ARM_LDC_PC_G2)
6354 /* PC relative. */
6355 signed_value = value - pc + signed_addend;
6356 else
6357 /* Section base relative. */
6358 signed_value = value - sb + signed_addend;
6359
6360 /* Calculate the value of the relevant G_{n-1} to obtain
6361 the residual at that stage. */
6362 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6363
6364 /* Check for overflow. (The absolute value to go in the place must be
6365 divisible by four and, after having been divided by four, must
6366 fit in eight bits.) */
6367 if ((residual & 0x3) != 0 || residual >= 0x400)
6368 {
6369 (*_bfd_error_handler)
6370 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6371 input_bfd, input_section,
6372 (long) rel->r_offset, abs (signed_value), howto->name);
6373 return bfd_reloc_overflow;
6374 }
6375
6376 /* Mask out the value and U bit. */
6377 insn &= 0xff7fff00;
6378
6379 /* Set the U bit if the value to go in the place is non-negative. */
6380 if (signed_value >= 0)
6381 insn |= 1 << 23;
6382
6383 /* Encode the offset. */
6384 insn |= residual >> 2;
6385
6386 bfd_put_32 (input_bfd, insn, hit_data);
6387 }
6388 return bfd_reloc_ok;
6389
252b5132
RH		 6390 default:
6391 return bfd_reloc_notsupported;
6392 }
6393}
6394
98c1d4aa
NC		 6395/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6396static void
57e8b36a
NC		 6397arm_add_to_rel (bfd * abfd,
6398 bfd_byte * address,
6399 reloc_howto_type * howto,
6400 bfd_signed_vma increment)
98c1d4aa 6401{
98c1d4aa
NC		 6402 bfd_signed_vma addend;
6403
bd97cb95
DJ		 6404 if (howto->type == R_ARM_THM_CALL
6405 || howto->type == R_ARM_THM_JUMP24)
98c1d4aa 6406 {
9a5aca8c
AM		 6407 int upper_insn, lower_insn;
6408 int upper, lower;
98c1d4aa 6409
9a5aca8c
AM		 6410 upper_insn = bfd_get_16 (abfd, address);
6411 lower_insn = bfd_get_16 (abfd, address + 2);
6412 upper = upper_insn & 0x7ff;
6413 lower = lower_insn & 0x7ff;
6414
6415 addend = (upper << 12) | (lower << 1);
ddda4409 6416 addend += increment;
9a5aca8c 6417 addend >>= 1;
98c1d4aa 6418
9a5aca8c
AM		 6419 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
6420 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
6421
dc810e39
AM		 6422 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
6423 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
9a5aca8c
AM		 6424 }
6425 else
6426 {
6427 bfd_vma contents;
6428
6429 contents = bfd_get_32 (abfd, address);
6430
6431 /* Get the (signed) value from the instruction. */
6432 addend = contents & howto->src_mask;
6433 if (addend & ((howto->src_mask + 1) >> 1))
6434 {
6435 bfd_signed_vma mask;
6436
6437 mask = -1;
6438 mask &= ~ howto->src_mask;
6439 addend |= mask;
6440 }
6441
6442 /* Add in the increment, (which is a byte value). */
6443 switch (howto->type)
6444 {
6445 default:
6446 addend += increment;
6447 break;
6448
6449 case R_ARM_PC24:
c6596c5e 6450 case R_ARM_PLT32:
5b5bb741
PB		 6451 case R_ARM_CALL:
6452 case R_ARM_JUMP24:
9a5aca8c 6453 addend <<= howto->size;
dc810e39 6454 addend += increment;
9a5aca8c
AM		 6455
6456 /* Should we check for overflow here ? */
6457
6458 /* Drop any undesired bits. */
6459 addend >>= howto->rightshift;
6460 break;
6461 }
6462
6463 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
6464
6465 bfd_put_32 (abfd, contents, address);
ddda4409 6466 }
98c1d4aa 6467}
252b5132 6468
ba93b8ac
DJ		 6469#define IS_ARM_TLS_RELOC(R_TYPE) \
6470 ((R_TYPE) == R_ARM_TLS_GD32 \
6471 || (R_TYPE) == R_ARM_TLS_LDO32 \
6472 || (R_TYPE) == R_ARM_TLS_LDM32 \
6473 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6474 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6475 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6476 || (R_TYPE) == R_ARM_TLS_LE32 \
6477 || (R_TYPE) == R_ARM_TLS_IE32)
6478
252b5132 6479/* Relocate an ARM ELF section. */
b34976b6 6480static bfd_boolean
57e8b36a
NC		 6481elf32_arm_relocate_section (bfd * output_bfd,
6482 struct bfd_link_info * info,
6483 bfd * input_bfd,
6484 asection * input_section,
6485 bfd_byte * contents,
6486 Elf_Internal_Rela * relocs,
6487 Elf_Internal_Sym * local_syms,
6488 asection ** local_sections)
252b5132 6489{
b34976b6
AM		 6490 Elf_Internal_Shdr *symtab_hdr;
6491 struct elf_link_hash_entry **sym_hashes;
6492 Elf_Internal_Rela *rel;
6493 Elf_Internal_Rela *relend;
6494 const char *name;
b32d3aa2 6495 struct elf32_arm_link_hash_table * globals;
252b5132 6496
4e7fd91e 6497 globals = elf32_arm_hash_table (info);
b491616a 6498
0ffa91dd 6499 symtab_hdr = & elf_symtab_hdr (input_bfd);
252b5132
RH		 6500 sym_hashes = elf_sym_hashes (input_bfd);
6501
6502 rel = relocs;
6503 relend = relocs + input_section->reloc_count;
6504 for (; rel < relend; rel++)
6505 {
ba96a88f
NC		 6506 int r_type;
6507 reloc_howto_type * howto;
6508 unsigned long r_symndx;
6509 Elf_Internal_Sym * sym;
6510 asection * sec;
252b5132 6511 struct elf_link_hash_entry * h;
ba96a88f
NC		 6512 bfd_vma relocation;
6513 bfd_reloc_status_type r;
6514 arelent bfd_reloc;
ba93b8ac 6515 char sym_type;
0945cdfd 6516 bfd_boolean unresolved_reloc = FALSE;
f2a9dd69 6517 char *error_message = NULL;
f21f3fe0 6518
252b5132 6519 r_symndx = ELF32_R_SYM (rel->r_info);
ba96a88f 6520 r_type = ELF32_R_TYPE (rel->r_info);
b32d3aa2 6521 r_type = arm_real_reloc_type (globals, r_type);
252b5132 6522
ba96a88f
NC		 6523 if ( r_type == R_ARM_GNU_VTENTRY
6524 || r_type == R_ARM_GNU_VTINHERIT)
252b5132
RH		 6525 continue;
6526
b32d3aa2 6527 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
ba96a88f 6528 howto = bfd_reloc.howto;
252b5132 6529
252b5132
RH		 6530 h = NULL;
6531 sym = NULL;
6532 sec = NULL;
9b485d32 6533
252b5132
RH		 6534 if (r_symndx < symtab_hdr->sh_info)
6535 {
6536 sym = local_syms + r_symndx;
ba93b8ac 6537 sym_type = ELF32_ST_TYPE (sym->st_info);
252b5132 6538 sec = local_sections[r_symndx];
4e7fd91e 6539 if (globals->use_rel)
f8df10f4 6540 {
4e7fd91e
PB		 6541 relocation = (sec->output_section->vma
6542 + sec->output_offset
6543 + sym->st_value);
ab96bf03
AM		 6544 if (!info->relocatable
6545 && (sec->flags & SEC_MERGE)
6546 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
f8df10f4 6547 {
4e7fd91e
PB		 6548 asection *msec;
6549 bfd_vma addend, value;
6550
6551 if (howto->rightshift)
6552 {
6553 (*_bfd_error_handler)
6554 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6555 input_bfd, input_section,
6556 (long) rel->r_offset, howto->name);
6557 return FALSE;
6558 }
f8df10f4 6559
4e7fd91e 6560 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
f8df10f4 6561
4e7fd91e
PB		 6562 /* Get the (signed) value from the instruction. */
6563 addend = value & howto->src_mask;
6564 if (addend & ((howto->src_mask + 1) >> 1))
6565 {
6566 bfd_signed_vma mask;
f8df10f4 6567
4e7fd91e
PB		 6568 mask = -1;
6569 mask &= ~ howto->src_mask;
6570 addend |= mask;
6571 }
6572 msec = sec;
6573 addend =
6574 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
6575 - relocation;
6576 addend += msec->output_section->vma + msec->output_offset;
6577 value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask);
6578 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
f8df10f4 6579 }
f8df10f4 6580 }
4e7fd91e
PB		 6581 else
6582 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 6583 }
6584 else
6585 {
560e09e9 6586 bfd_boolean warned;
560e09e9 6587
b2a8e766
AM		 6588 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6589 r_symndx, symtab_hdr, sym_hashes,
6590 h, sec, relocation,
6591 unresolved_reloc, warned);
ba93b8ac
DJ		 6592
6593 sym_type = h->type;
252b5132
RH		 6594 }
6595
ab96bf03
AM		 6596 if (sec != NULL && elf_discarded_section (sec))
6597 {
6598 /* For relocs against symbols from removed linkonce sections,
6599 or sections discarded by a linker script, we just want the
6600 section contents zeroed. Avoid any special processing. */
6601 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6602 rel->r_info = 0;
6603 rel->r_addend = 0;
6604 continue;
6605 }
6606
6607 if (info->relocatable)
6608 {
6609 /* This is a relocatable link. We don't have to change
6610 anything, unless the reloc is against a section symbol,
6611 in which case we have to adjust according to where the
6612 section symbol winds up in the output section. */
6613 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6614 {
6615 if (globals->use_rel)
6616 arm_add_to_rel (input_bfd, contents + rel->r_offset,
6617 howto, (bfd_signed_vma) sec->output_offset);
6618 else
6619 rel->r_addend += sec->output_offset;
6620 }
6621 continue;
6622 }
6623
252b5132
RH		 6624 if (h != NULL)
6625 name = h->root.root.string;
6626 else
6627 {
6628 name = (bfd_elf_string_from_elf_section
6629 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6630 if (name == NULL || *name == '\0')
6631 name = bfd_section_name (input_bfd, sec);
6632 }
f21f3fe0 6633
ba93b8ac
DJ		 6634 if (r_symndx != 0
6635 && r_type != R_ARM_NONE
6636 && (h == NULL
6637 || h->root.type == bfd_link_hash_defined
6638 || h->root.type == bfd_link_hash_defweak)
6639 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
6640 {
6641 (*_bfd_error_handler)
6642 ((sym_type == STT_TLS
6643 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6644 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6645 input_bfd,
6646 input_section,
6647 (long) rel->r_offset,
6648 howto->name,
6649 name);
6650 }
6651
252b5132
RH		 6652 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
6653 input_section, contents, rel,
6654 relocation, info, sec, name,
6655 (h ? ELF_ST_TYPE (h->type) :
0945cdfd 6656 ELF_ST_TYPE (sym->st_info)), h,
f2a9dd69 6657 &unresolved_reloc, &error_message);
0945cdfd
DJ		 6658
6659 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6660 because such sections are not SEC_ALLOC and thus ld.so will
6661 not process them. */
6662 if (unresolved_reloc
6663 && !((input_section->flags & SEC_DEBUGGING) != 0
6664 && h->def_dynamic))
6665 {
6666 (*_bfd_error_handler)
843fe662
L		 6667 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6668 input_bfd,
6669 input_section,
6670 (long) rel->r_offset,
6671 howto->name,
6672 h->root.root.string);
0945cdfd
DJ		 6673 return FALSE;
6674 }
252b5132
RH		 6675
6676 if (r != bfd_reloc_ok)
6677 {
252b5132
RH		 6678 switch (r)
6679 {
6680 case bfd_reloc_overflow:
cf919dfd
PB		 6681 /* If the overflowing reloc was to an undefined symbol,
6682 we have already printed one error message and there
6683 is no point complaining again. */
6684 if ((! h ||
6685 h->root.type != bfd_link_hash_undefined)
6686 && (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 6687 (info, (h ? &h->root : NULL), name, howto->name,
6688 (bfd_vma) 0, input_bfd, input_section,
6689 rel->r_offset))))
b34976b6 6690 return FALSE;
252b5132
RH		 6691 break;
6692
6693 case bfd_reloc_undefined:
6694 if (!((*info->callbacks->undefined_symbol)
6695 (info, name, input_bfd, input_section,
b34976b6
AM		 6696 rel->r_offset, TRUE)))
6697 return FALSE;
252b5132
RH		 6698 break;
6699
6700 case bfd_reloc_outofrange:
f2a9dd69 6701 error_message = _("out of range");
252b5132
RH		 6702 goto common_error;
6703
6704 case bfd_reloc_notsupported:
f2a9dd69 6705 error_message = _("unsupported relocation");
252b5132
RH		 6706 goto common_error;
6707
6708 case bfd_reloc_dangerous:
f2a9dd69 6709 /* error_message should already be set. */
252b5132
RH		 6710 goto common_error;
6711
6712 default:
f2a9dd69 6713 error_message = _("unknown error");
252b5132
RH		 6714 /* fall through */
6715
6716 common_error:
f2a9dd69
DJ		 6717 BFD_ASSERT (error_message != NULL);
6718 if (!((*info->callbacks->reloc_dangerous)
6719 (info, error_message, input_bfd, input_section,
252b5132 6720 rel->r_offset)))
b34976b6 6721 return FALSE;
252b5132
RH		 6722 break;
6723 }
6724 }
6725 }
6726
b34976b6 6727 return TRUE;
252b5132
RH		 6728}
6729
c178919b
NC		 6730/* Set the right machine number. */
6731
6732static bfd_boolean
57e8b36a 6733elf32_arm_object_p (bfd *abfd)
c178919b 6734{
5a6c6817 6735 unsigned int mach;
57e8b36a 6736
5a6c6817 6737 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
c178919b 6738
5a6c6817
NC		 6739 if (mach != bfd_mach_arm_unknown)
6740 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
6741
6742 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
6743 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
e16bb312 6744
e16bb312 6745 else
5a6c6817 6746 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
c178919b
NC		 6747
6748 return TRUE;
6749}
6750
fc830a83 6751/* Function to keep ARM specific flags in the ELF header. */
3c9458e9 6752
b34976b6 6753static bfd_boolean
57e8b36a 6754elf32_arm_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH		 6755{
6756 if (elf_flags_init (abfd)
6757 && elf_elfheader (abfd)->e_flags != flags)
6758 {
fc830a83
NC		 6759 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
6760 {
fd2ec330 6761 if (flags & EF_ARM_INTERWORK)
d003868e
AM		 6762 (*_bfd_error_handler)
6763 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6764 abfd);
fc830a83 6765 else
d003868e
AM		 6766 _bfd_error_handler
6767 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6768 abfd);
fc830a83 6769 }
252b5132
RH		 6770 }
6771 else
6772 {
6773 elf_elfheader (abfd)->e_flags = flags;
b34976b6 6774 elf_flags_init (abfd) = TRUE;
252b5132
RH		 6775 }
6776
b34976b6 6777 return TRUE;
252b5132
RH		 6778}
6779
fc830a83 6780/* Copy backend specific data from one object module to another. */
9b485d32 6781
b34976b6 6782static bfd_boolean
57e8b36a 6783elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 6784{
6785 flagword in_flags;
6786 flagword out_flags;
6787
0ffa91dd 6788 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
b34976b6 6789 return TRUE;
252b5132 6790
fc830a83 6791 in_flags = elf_elfheader (ibfd)->e_flags;
252b5132
RH		 6792 out_flags = elf_elfheader (obfd)->e_flags;
6793
fc830a83
NC		 6794 if (elf_flags_init (obfd)
6795 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
6796 && in_flags != out_flags)
252b5132 6797 {
252b5132 6798 /* Cannot mix APCS26 and APCS32 code. */
fd2ec330 6799 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
b34976b6 6800 return FALSE;
252b5132
RH		 6801
6802 /* Cannot mix float APCS and non-float APCS code. */
fd2ec330 6803 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
b34976b6 6804 return FALSE;
252b5132
RH		 6805
6806 /* If the src and dest have different interworking flags
6807 then turn off the interworking bit. */
fd2ec330 6808 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
252b5132 6809 {
fd2ec330 6810 if (out_flags & EF_ARM_INTERWORK)
d003868e
AM		 6811 _bfd_error_handler
6812 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6813 obfd, ibfd);
252b5132 6814
fd2ec330 6815 in_flags &= ~EF_ARM_INTERWORK;
252b5132 6816 }
1006ba19
PB		 6817
6818 /* Likewise for PIC, though don't warn for this case. */
fd2ec330
PB		 6819 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
6820 in_flags &= ~EF_ARM_PIC;
252b5132
RH		 6821 }
6822
6823 elf_elfheader (obfd)->e_flags = in_flags;
b34976b6 6824 elf_flags_init (obfd) = TRUE;
252b5132 6825
94a3258f
PB		 6826 /* Also copy the EI_OSABI field. */
6827 elf_elfheader (obfd)->e_ident[EI_OSABI] =
6828 elf_elfheader (ibfd)->e_ident[EI_OSABI];
6829
104d59d1
JM		 6830 /* Copy object attributes. */
6831 _bfd_elf_copy_obj_attributes (ibfd, obfd);
ee065d83
PB		 6832
6833 return TRUE;
6834}
6835
6836/* Values for Tag_ABI_PCS_R9_use. */
6837enum
6838{
6839 AEABI_R9_V6,
6840 AEABI_R9_SB,
6841 AEABI_R9_TLS,
6842 AEABI_R9_unused
6843};
6844
6845/* Values for Tag_ABI_PCS_RW_data. */
6846enum
6847{
6848 AEABI_PCS_RW_data_absolute,
6849 AEABI_PCS_RW_data_PCrel,
6850 AEABI_PCS_RW_data_SBrel,
6851 AEABI_PCS_RW_data_unused
6852};
6853
6854/* Values for Tag_ABI_enum_size. */
6855enum
6856{
6857 AEABI_enum_unused,
6858 AEABI_enum_short,
6859 AEABI_enum_wide,
6860 AEABI_enum_forced_wide
6861};
6862
104d59d1
JM		 6863/* Determine whether an object attribute tag takes an integer, a
6864 string or both. */
6865static int
6866elf32_arm_obj_attrs_arg_type (int tag)
6867{
6868 if (tag == Tag_compatibility)
6869 return 3;
6870 else if (tag == 4 || tag == 5)
6871 return 2;
6872 else if (tag < 32)
6873 return 1;
6874 else
6875 return (tag & 1) != 0 ? 2 : 1;
6876}
6877
ee065d83
PB		 6878/* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6879 are conflicting attributes. */
6880static bfd_boolean
6881elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
6882{
104d59d1
JM		 6883 obj_attribute *in_attr;
6884 obj_attribute *out_attr;
6885 obj_attribute_list *in_list;
ee065d83
PB		 6886 /* Some tags have 0 = don't care, 1 = strong requirement,
6887 2 = weak requirement. */
6888 static const int order_312[3] = {3, 1, 2};
6889 int i;
6890
104d59d1 6891 if (!elf_known_obj_attributes_proc (obfd)[0].i)
ee065d83
PB		 6892 {
6893 /* This is the first object. Copy the attributes. */
104d59d1 6894 _bfd_elf_copy_obj_attributes (ibfd, obfd);
004ae526
PB		 6895
6896 /* Use the Tag_null value to indicate the attributes have been
6897 initialized. */
104d59d1 6898 elf_known_obj_attributes_proc (obfd)[0].i = 1;
004ae526 6899
ee065d83
PB		 6900 return TRUE;
6901 }
6902
104d59d1
JM		 6903 in_attr = elf_known_obj_attributes_proc (ibfd);
6904 out_attr = elf_known_obj_attributes_proc (obfd);
ee065d83
PB		 6905 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6906 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
6907 {
6908 /* Ignore mismatches if teh object doesn't use floating point. */
6909 if (out_attr[Tag_ABI_FP_number_model].i == 0)
6910 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
6911 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
6912 {
6913 _bfd_error_handler
6914 (_("ERROR: %B uses VFP register arguments, %B does not"),
6915 ibfd, obfd);
6916 return FALSE;
6917 }
6918 }
6919
104d59d1 6920 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
ee065d83
PB		 6921 {
6922 /* Merge this attribute with existing attributes. */
6923 switch (i)
6924 {
6925 case Tag_CPU_raw_name:
6926 case Tag_CPU_name:
004ae526
PB		 6927 /* Use whichever has the greatest architecture requirements. We
6928 won't necessarily have both the above tags, so make sure input
6929 name is non-NULL. */
6930 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i
6931 && in_attr[i].s)
104d59d1 6932 out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s);
ee065d83
PB		 6933 break;
6934
6935 case Tag_ABI_optimization_goals:
6936 case Tag_ABI_FP_optimization_goals:
6937 /* Use the first value seen. */
6938 break;
6939
6940 case Tag_CPU_arch:
6941 case Tag_ARM_ISA_use:
6942 case Tag_THUMB_ISA_use:
6943 case Tag_VFP_arch:
6944 case Tag_WMMX_arch:
6945 case Tag_NEON_arch:
6946 /* ??? Do NEON and WMMX conflict? */
6947 case Tag_ABI_FP_rounding:
6948 case Tag_ABI_FP_denormal:
6949 case Tag_ABI_FP_exceptions:
6950 case Tag_ABI_FP_user_exceptions:
6951 case Tag_ABI_FP_number_model:
6952 case Tag_ABI_align8_preserved:
6953 case Tag_ABI_HardFP_use:
6954 /* Use the largest value specified. */
6955 if (in_attr[i].i > out_attr[i].i)
6956 out_attr[i].i = in_attr[i].i;
6957 break;
6958
6959 case Tag_CPU_arch_profile:
6960 /* Warn if conflicting architecture profiles used. */
6961 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
6962 {
6963 _bfd_error_handler
6964 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6965 ibfd, in_attr[i].i, out_attr[i].i);
6966 return FALSE;
6967 }
6968 if (in_attr[i].i)
6969 out_attr[i].i = in_attr[i].i;
6970 break;
6971 case Tag_PCS_config:
6972 if (out_attr[i].i == 0)
6973 out_attr[i].i = in_attr[i].i;
6974 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
6975 {
6976 /* It's sometimes ok to mix different configs, so this is only
6977 a warning. */
6978 _bfd_error_handler
6979 (_("Warning: %B: Conflicting platform configuration"), ibfd);
6980 }
6981 break;
6982 case Tag_ABI_PCS_R9_use:
004ae526
PB		 6983 if (in_attr[i].i != out_attr[i].i
6984 && out_attr[i].i != AEABI_R9_unused
ee065d83
PB		 6985 && in_attr[i].i != AEABI_R9_unused)
6986 {
6987 _bfd_error_handler
6988 (_("ERROR: %B: Conflicting use of R9"), ibfd);
6989 return FALSE;
6990 }
6991 if (out_attr[i].i == AEABI_R9_unused)
6992 out_attr[i].i = in_attr[i].i;
6993 break;
6994 case Tag_ABI_PCS_RW_data:
6995 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
6996 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
6997 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
6998 {
6999 _bfd_error_handler
7000 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
7001 ibfd);
7002 return FALSE;
7003 }
7004 /* Use the smallest value specified. */
7005 if (in_attr[i].i < out_attr[i].i)
7006 out_attr[i].i = in_attr[i].i;
7007 break;
7008 case Tag_ABI_PCS_RO_data:
7009 /* Use the smallest value specified. */
7010 if (in_attr[i].i < out_attr[i].i)
7011 out_attr[i].i = in_attr[i].i;
7012 break;
7013 case Tag_ABI_PCS_GOT_use:
7014 if (in_attr[i].i > 2 || out_attr[i].i > 2
7015 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
7016 out_attr[i].i = in_attr[i].i;
7017 break;
7018 case Tag_ABI_PCS_wchar_t:
7019 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i)
7020 {
7021 _bfd_error_handler
7022 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd);
7023 return FALSE;
7024 }
7025 if (in_attr[i].i)
7026 out_attr[i].i = in_attr[i].i;
7027 break;
7028 case Tag_ABI_align8_needed:
7029 /* ??? Check against Tag_ABI_align8_preserved. */
7030 if (in_attr[i].i > 2 || out_attr[i].i > 2
7031 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
7032 out_attr[i].i = in_attr[i].i;
7033 break;
7034 case Tag_ABI_enum_size:
7035 if (in_attr[i].i != AEABI_enum_unused)
7036 {
7037 if (out_attr[i].i == AEABI_enum_unused
7038 || out_attr[i].i == AEABI_enum_forced_wide)
7039 {
7040 /* The existing object is compatible with anything.
7041 Use whatever requirements the new object has. */
7042 out_attr[i].i = in_attr[i].i;
7043 }
7044 else if (in_attr[i].i != AEABI_enum_forced_wide
bf21ed78 7045 && out_attr[i].i != in_attr[i].i
0ffa91dd 7046 && !elf_arm_tdata (obfd)->no_enum_size_warning)
ee065d83 7047 {
bf21ed78
MS		 7048 const char *aeabi_enum_names[] =
7049 { "", "variable-size", "32-bit", "" };
ee065d83 7050 _bfd_error_handler
bf21ed78
MS		 7051 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
7052 ibfd, aeabi_enum_names[in_attr[i].i],
7053 aeabi_enum_names[out_attr[i].i]);
ee065d83
PB		 7054 }
7055 }
7056 break;
7057 case Tag_ABI_VFP_args:
7058 /* Aready done. */
7059 break;
7060 case Tag_ABI_WMMX_args:
7061 if (in_attr[i].i != out_attr[i].i)
7062 {
7063 _bfd_error_handler
7064 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
7065 ibfd, obfd);
7066 return FALSE;
7067 }
7068 break;
7069 default: /* All known attributes should be explicitly covered. */
7070 abort ();
7071 }
3cfad14c
JM		 7072
7073 if (in_attr[i].type && !out_attr[i].type)
7074 switch (in_attr[i].type)
7075 {
7076 case 1:
7077 if (out_attr[i].i)
7078 out_attr[i].type = 1;
7079 break;
7080
7081 case 2:
7082 if (out_attr[i].s)
7083 out_attr[i].type = 2;
7084 break;
7085
7086 default:
7087 abort ();
7088 }
ee065d83
PB		 7089 }
7090
104d59d1
JM		 7091 /* Merge Tag_compatibility attributes and any common GNU ones. */
7092 _bfd_elf_merge_object_attributes (ibfd, obfd);
ee065d83 7093
104d59d1
JM		 7094 /* Check for any attributes not known on ARM. */
7095 in_list = elf_other_obj_attributes_proc (ibfd);
7096 while (in_list && in_list->tag == Tag_compatibility)
7097 in_list = in_list->next;
ee065d83
PB		 7098
7099 for (; in_list; in_list = in_list->next)
7100 {
7101 if ((in_list->tag & 128) < 64)
eb111b1f
BE		 7102 {
7103 _bfd_error_handler
7104 (_("Warning: %B: Unknown EABI object attribute %d"),
7105 ibfd, in_list->tag);
7106 break;
7107 }
ee065d83 7108 }
b34976b6 7109 return TRUE;
252b5132
RH		 7110}
7111
3a4a14e9
PB		 7112
7113/* Return TRUE if the two EABI versions are incompatible. */
7114
7115static bfd_boolean
7116elf32_arm_versions_compatible (unsigned iver, unsigned over)
7117{
7118 /* v4 and v5 are the same spec before and after it was released,
7119 so allow mixing them. */
7120 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
7121 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
7122 return TRUE;
7123
7124 return (iver == over);
7125}
7126
252b5132
RH		 7127/* Merge backend specific data from an object file to the output
7128 object file when linking. */
9b485d32 7129
b34976b6 7130static bfd_boolean
57e8b36a 7131elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
252b5132
RH		 7132{
7133 flagword out_flags;
7134 flagword in_flags;
b34976b6 7135 bfd_boolean flags_compatible = TRUE;
cf919dfd 7136 asection *sec;
252b5132 7137
9b485d32 7138 /* Check if we have the same endianess. */
82e51918 7139 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 7140 return FALSE;
1fe494a5 7141
0ffa91dd 7142 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
b34976b6 7143 return TRUE;
252b5132 7144
ee065d83
PB		 7145 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
7146 return FALSE;
7147
252b5132
RH		 7148 /* The input BFD must have had its flags initialised. */
7149 /* The following seems bogus to me -- The flags are initialized in
7150 the assembler but I don't think an elf_flags_init field is
9b485d32 7151 written into the object. */
252b5132
RH		 7152 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7153
7154 in_flags = elf_elfheader (ibfd)->e_flags;
7155 out_flags = elf_elfheader (obfd)->e_flags;
7156
7157 if (!elf_flags_init (obfd))
7158 {
fe077fa6
NC		 7159 /* If the input is the default architecture and had the default
7160 flags then do not bother setting the flags for the output
7161 architecture, instead allow future merges to do this. If no
7162 future merges ever set these flags then they will retain their
7163 uninitialised values, which surprise surprise, correspond
252b5132 7164 to the default values. */
fe077fa6
NC		 7165 if (bfd_get_arch_info (ibfd)->the_default
7166 && elf_elfheader (ibfd)->e_flags == 0)
b34976b6 7167 return TRUE;
252b5132 7168
b34976b6 7169 elf_flags_init (obfd) = TRUE;
252b5132
RH		 7170 elf_elfheader (obfd)->e_flags = in_flags;
7171
7172 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
7173 && bfd_get_arch_info (obfd)->the_default)
7174 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
7175
b34976b6 7176 return TRUE;
252b5132
RH		 7177 }
7178
5a6c6817
NC		 7179 /* Determine what should happen if the input ARM architecture
7180 does not match the output ARM architecture. */
7181 if (! bfd_arm_merge_machines (ibfd, obfd))
7182 return FALSE;
e16bb312 7183
1006ba19 7184 /* Identical flags must be compatible. */
252b5132 7185 if (in_flags == out_flags)
b34976b6 7186 return TRUE;
252b5132 7187
35a0f415
DJ		 7188 /* Check to see if the input BFD actually contains any sections. If
7189 not, its flags may not have been initialised either, but it
8e3de13a 7190 cannot actually cause any incompatiblity. Do not short-circuit
35a0f415 7191 dynamic objects; their section list may be emptied by
d1f161ea 7192 elf_link_add_object_symbols.
35a0f415 7193
d1f161ea
NC		 7194 Also check to see if there are no code sections in the input.
7195 In this case there is no need to check for code specific flags.
7196 XXX - do we need to worry about floating-point format compatability
7197 in data sections ? */
35a0f415 7198 if (!(ibfd->flags & DYNAMIC))
cf919dfd 7199 {
35a0f415 7200 bfd_boolean null_input_bfd = TRUE;
d1f161ea 7201 bfd_boolean only_data_sections = TRUE;
35a0f415
DJ		 7202
7203 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
cf919dfd 7204 {
35a0f415
DJ		 7205 /* Ignore synthetic glue sections. */
7206 if (strcmp (sec->name, ".glue_7")
7207 && strcmp (sec->name, ".glue_7t"))
7208 {
d1f161ea
NC		 7209 if ((bfd_get_section_flags (ibfd, sec)
7210 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7211 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7212 only_data_sections = FALSE;
7213
35a0f415
DJ		 7214 null_input_bfd = FALSE;
7215 break;
7216 }
cf919dfd 7217 }
d1f161ea
NC		 7218
7219 if (null_input_bfd || only_data_sections)
35a0f415 7220 return TRUE;
cf919dfd 7221 }
cf919dfd 7222
252b5132 7223 /* Complain about various flag mismatches. */
3a4a14e9
PB		 7224 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
7225 EF_ARM_EABI_VERSION (out_flags)))
fc830a83 7226 {
d003868e 7227 _bfd_error_handler
3656d5e3 7228 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
d003868e
AM		 7229 ibfd, obfd,
7230 (in_flags & EF_ARM_EABIMASK) >> 24,
7231 (out_flags & EF_ARM_EABIMASK) >> 24);
b34976b6 7232 return FALSE;
fc830a83 7233 }
252b5132 7234
1006ba19 7235 /* Not sure what needs to be checked for EABI versions >= 1. */
00a97672
RS		 7236 /* VxWorks libraries do not use these flags. */
7237 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
7238 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
7239 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
1006ba19 7240 {
fd2ec330 7241 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
1006ba19 7242 {
d003868e
AM		 7243 _bfd_error_handler
7244 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7245 ibfd, obfd,
7246 in_flags & EF_ARM_APCS_26 ? 26 : 32,
7247 out_flags & EF_ARM_APCS_26 ? 26 : 32);
b34976b6 7248 flags_compatible = FALSE;
1006ba19 7249 }
252b5132 7250
fd2ec330 7251 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
1006ba19 7252 {
5eefb65f 7253 if (in_flags & EF_ARM_APCS_FLOAT)
d003868e
AM		 7254 _bfd_error_handler
7255 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7256 ibfd, obfd);
5eefb65f 7257 else
d003868e
AM		 7258 _bfd_error_handler
7259 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7260 ibfd, obfd);
63b0f745 7261
b34976b6 7262 flags_compatible = FALSE;
1006ba19 7263 }
252b5132 7264
96a846ea 7265 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
1006ba19 7266 {
96a846ea 7267 if (in_flags & EF_ARM_VFP_FLOAT)
d003868e
AM		 7268 _bfd_error_handler
7269 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7270 ibfd, obfd);
5eefb65f 7271 else
d003868e
AM		 7272 _bfd_error_handler
7273 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7274 ibfd, obfd);
fde78edd
NC		 7275
7276 flags_compatible = FALSE;
7277 }
7278
7279 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
7280 {
7281 if (in_flags & EF_ARM_MAVERICK_FLOAT)
d003868e
AM		 7282 _bfd_error_handler
7283 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7284 ibfd, obfd);
fde78edd 7285 else
d003868e
AM		 7286 _bfd_error_handler
7287 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7288 ibfd, obfd);
63b0f745 7289
b34976b6 7290 flags_compatible = FALSE;
1006ba19 7291 }
96a846ea
RE		 7292
7293#ifdef EF_ARM_SOFT_FLOAT
7294 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
7295 {
7296 /* We can allow interworking between code that is VFP format
7297 layout, and uses either soft float or integer regs for
7298 passing floating point arguments and results. We already
7299 know that the APCS_FLOAT flags match; similarly for VFP
7300 flags. */
7301 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
7302 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
7303 {
7304 if (in_flags & EF_ARM_SOFT_FLOAT)
d003868e
AM		 7305 _bfd_error_handler
7306 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7307 ibfd, obfd);
96a846ea 7308 else
d003868e
AM		 7309 _bfd_error_handler
7310 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7311 ibfd, obfd);
96a846ea 7312
b34976b6 7313 flags_compatible = FALSE;
96a846ea
RE		 7314 }
7315 }
ee43f35e 7316#endif
252b5132 7317
1006ba19 7318 /* Interworking mismatch is only a warning. */
fd2ec330 7319 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8f615d07 7320 {
e3c8793a
NC		 7321 if (in_flags & EF_ARM_INTERWORK)
7322 {
d003868e
AM		 7323 _bfd_error_handler
7324 (_("Warning: %B supports interworking, whereas %B does not"),
7325 ibfd, obfd);
e3c8793a
NC		 7326 }
7327 else
7328 {
d003868e
AM		 7329 _bfd_error_handler
7330 (_("Warning: %B does not support interworking, whereas %B does"),
7331 ibfd, obfd);
e3c8793a 7332 }
8f615d07 7333 }
252b5132 7334 }
63b0f745 7335
1006ba19 7336 return flags_compatible;
252b5132
RH		 7337}
7338
9b485d32
NC		 7339/* Display the flags field. */
7340
b34976b6 7341static bfd_boolean
57e8b36a 7342elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132 7343{
fc830a83
NC		 7344 FILE * file = (FILE *) ptr;
7345 unsigned long flags;
252b5132
RH		 7346
7347 BFD_ASSERT (abfd != NULL && ptr != NULL);
7348
7349 /* Print normal ELF private data. */
7350 _bfd_elf_print_private_bfd_data (abfd, ptr);
7351
fc830a83 7352 flags = elf_elfheader (abfd)->e_flags;
9b485d32
NC		 7353 /* Ignore init flag - it may not be set, despite the flags field
7354 containing valid data. */
252b5132
RH		 7355
7356 /* xgettext:c-format */
9b485d32 7357 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
252b5132 7358
fc830a83
NC		 7359 switch (EF_ARM_EABI_VERSION (flags))
7360 {
7361 case EF_ARM_EABI_UNKNOWN:
4cc11e76 7362 /* The following flag bits are GNU extensions and not part of the
fc830a83
NC		 7363 official ARM ELF extended ABI. Hence they are only decoded if
7364 the EABI version is not set. */
fd2ec330 7365 if (flags & EF_ARM_INTERWORK)
9b485d32 7366 fprintf (file, _(" [interworking enabled]"));
9a5aca8c 7367
fd2ec330 7368 if (flags & EF_ARM_APCS_26)
6c571f00 7369 fprintf (file, " [APCS-26]");
fc830a83 7370 else
6c571f00 7371 fprintf (file, " [APCS-32]");
9a5aca8c 7372
96a846ea
RE		 7373 if (flags & EF_ARM_VFP_FLOAT)
7374 fprintf (file, _(" [VFP float format]"));
fde78edd
NC		 7375 else if (flags & EF_ARM_MAVERICK_FLOAT)
7376 fprintf (file, _(" [Maverick float format]"));
96a846ea
RE		 7377 else
7378 fprintf (file, _(" [FPA float format]"));
7379
fd2ec330 7380 if (flags & EF_ARM_APCS_FLOAT)
9b485d32 7381 fprintf (file, _(" [floats passed in float registers]"));
9a5aca8c 7382
fd2ec330 7383 if (flags & EF_ARM_PIC)
9b485d32 7384 fprintf (file, _(" [position independent]"));
fc830a83 7385
fd2ec330 7386 if (flags & EF_ARM_NEW_ABI)
9b485d32 7387 fprintf (file, _(" [new ABI]"));
9a5aca8c 7388
fd2ec330 7389 if (flags & EF_ARM_OLD_ABI)
9b485d32 7390 fprintf (file, _(" [old ABI]"));
9a5aca8c 7391
fd2ec330 7392 if (flags & EF_ARM_SOFT_FLOAT)
9b485d32 7393 fprintf (file, _(" [software FP]"));
9a5aca8c 7394
96a846ea
RE		 7395 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
7396 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
fde78edd
NC		 7397 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
7398 | EF_ARM_MAVERICK_FLOAT);
fc830a83 7399 break;
9a5aca8c 7400
fc830a83 7401 case EF_ARM_EABI_VER1:
9b485d32 7402 fprintf (file, _(" [Version1 EABI]"));
9a5aca8c 7403
fc830a83 7404 if (flags & EF_ARM_SYMSARESORTED)
9b485d32 7405 fprintf (file, _(" [sorted symbol table]"));
fc830a83 7406 else
9b485d32 7407 fprintf (file, _(" [unsorted symbol table]"));
9a5aca8c 7408
fc830a83
NC		 7409 flags &= ~ EF_ARM_SYMSARESORTED;
7410 break;
9a5aca8c 7411
fd2ec330
PB		 7412 case EF_ARM_EABI_VER2:
7413 fprintf (file, _(" [Version2 EABI]"));
7414
7415 if (flags & EF_ARM_SYMSARESORTED)
7416 fprintf (file, _(" [sorted symbol table]"));
7417 else
7418 fprintf (file, _(" [unsorted symbol table]"));
7419
7420 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
7421 fprintf (file, _(" [dynamic symbols use segment index]"));
7422
7423 if (flags & EF_ARM_MAPSYMSFIRST)
7424 fprintf (file, _(" [mapping symbols precede others]"));
7425
99e4ae17 7426 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
fd2ec330
PB		 7427 | EF_ARM_MAPSYMSFIRST);
7428 break;
7429
d507cf36
PB		 7430 case EF_ARM_EABI_VER3:
7431 fprintf (file, _(" [Version3 EABI]"));
8cb51566
PB		 7432 break;
7433
7434 case EF_ARM_EABI_VER4:
7435 fprintf (file, _(" [Version4 EABI]"));
3a4a14e9 7436 goto eabi;
d507cf36 7437
3a4a14e9
PB		 7438 case EF_ARM_EABI_VER5:
7439 fprintf (file, _(" [Version5 EABI]"));
7440 eabi:
d507cf36
PB		 7441 if (flags & EF_ARM_BE8)
7442 fprintf (file, _(" [BE8]"));
7443
7444 if (flags & EF_ARM_LE8)
7445 fprintf (file, _(" [LE8]"));
7446
7447 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
7448 break;
7449
fc830a83 7450 default:
9b485d32 7451 fprintf (file, _(" <EABI version unrecognised>"));
fc830a83
NC		 7452 break;
7453 }
252b5132 7454
fc830a83 7455 flags &= ~ EF_ARM_EABIMASK;
252b5132 7456
fc830a83 7457 if (flags & EF_ARM_RELEXEC)
9b485d32 7458 fprintf (file, _(" [relocatable executable]"));
252b5132 7459
fc830a83 7460 if (flags & EF_ARM_HASENTRY)
9b485d32 7461 fprintf (file, _(" [has entry point]"));
252b5132 7462
fc830a83
NC		 7463 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
7464
7465 if (flags)
9b485d32 7466 fprintf (file, _("<Unrecognised flag bits set>"));
9a5aca8c 7467
252b5132
RH		 7468 fputc ('\n', file);
7469
b34976b6 7470 return TRUE;
252b5132
RH		 7471}
7472
7473static int
57e8b36a 7474elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
252b5132 7475{
2f0ca46a
NC		 7476 switch (ELF_ST_TYPE (elf_sym->st_info))
7477 {
7478 case STT_ARM_TFUNC:
7479 return ELF_ST_TYPE (elf_sym->st_info);
ce855c42 7480
2f0ca46a
NC		 7481 case STT_ARM_16BIT:
7482 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7483 This allows us to distinguish between data used by Thumb instructions
7484 and non-data (which is probably code) inside Thumb regions of an
7485 executable. */
1a0eb693 7486 if (type != STT_OBJECT && type != STT_TLS)
2f0ca46a
NC		 7487 return ELF_ST_TYPE (elf_sym->st_info);
7488 break;
9a5aca8c 7489
ce855c42
NC		 7490 default:
7491 break;
2f0ca46a
NC		 7492 }
7493
7494 return type;
252b5132 7495}
f21f3fe0 7496
252b5132 7497static asection *
07adf181
AM		 7498elf32_arm_gc_mark_hook (asection *sec,
7499 struct bfd_link_info *info,
7500 Elf_Internal_Rela *rel,
7501 struct elf_link_hash_entry *h,
7502 Elf_Internal_Sym *sym)
252b5132
RH		 7503{
7504 if (h != NULL)
07adf181 7505 switch (ELF32_R_TYPE (rel->r_info))
252b5132
RH		 7506 {
7507 case R_ARM_GNU_VTINHERIT:
7508 case R_ARM_GNU_VTENTRY:
07adf181
AM		 7509 return NULL;
7510 }
9ad5cbcf 7511
07adf181 7512 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 7513}
7514
780a67af
NC		 7515/* Update the got entry reference counts for the section being removed. */
7516
b34976b6 7517static bfd_boolean
ba93b8ac
DJ		 7518elf32_arm_gc_sweep_hook (bfd * abfd,
7519 struct bfd_link_info * info,
7520 asection * sec,
7521 const Elf_Internal_Rela * relocs)
252b5132 7522{
5e681ec4
PB		 7523 Elf_Internal_Shdr *symtab_hdr;
7524 struct elf_link_hash_entry **sym_hashes;
7525 bfd_signed_vma *local_got_refcounts;
7526 const Elf_Internal_Rela *rel, *relend;
eb043451
PB		 7527 struct elf32_arm_link_hash_table * globals;
7528
7dda2462
TG		 7529 if (info->relocatable)
7530 return TRUE;
7531
eb043451 7532 globals = elf32_arm_hash_table (info);
5e681ec4
PB		 7533
7534 elf_section_data (sec)->local_dynrel = NULL;
7535
0ffa91dd 7536 symtab_hdr = & elf_symtab_hdr (abfd);
5e681ec4
PB		 7537 sym_hashes = elf_sym_hashes (abfd);
7538 local_got_refcounts = elf_local_got_refcounts (abfd);
7539
bd97cb95
DJ		 7540 check_use_blx(globals);
7541
5e681ec4
PB		 7542 relend = relocs + sec->reloc_count;
7543 for (rel = relocs; rel < relend; rel++)
eb043451 7544 {
3eb128b2
AM		 7545 unsigned long r_symndx;
7546 struct elf_link_hash_entry *h = NULL;
eb043451 7547 int r_type;
5e681ec4 7548
3eb128b2
AM		 7549 r_symndx = ELF32_R_SYM (rel->r_info);
7550 if (r_symndx >= symtab_hdr->sh_info)
7551 {
7552 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7553 while (h->root.type == bfd_link_hash_indirect
7554 || h->root.type == bfd_link_hash_warning)
7555 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7556 }
7557
eb043451 7558 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 7559 r_type = arm_real_reloc_type (globals, r_type);
eb043451
PB		 7560 switch (r_type)
7561 {
7562 case R_ARM_GOT32:
eb043451 7563 case R_ARM_GOT_PREL:
ba93b8ac
DJ		 7564 case R_ARM_TLS_GD32:
7565 case R_ARM_TLS_IE32:
3eb128b2 7566 if (h != NULL)
eb043451 7567 {
eb043451
PB		 7568 if (h->got.refcount > 0)
7569 h->got.refcount -= 1;
7570 }
7571 else if (local_got_refcounts != NULL)
7572 {
7573 if (local_got_refcounts[r_symndx] > 0)
7574 local_got_refcounts[r_symndx] -= 1;
7575 }
7576 break;
7577
ba93b8ac
DJ		 7578 case R_ARM_TLS_LDM32:
7579 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
7580 break;
7581
eb043451 7582 case R_ARM_ABS32:
bb224fc3 7583 case R_ARM_ABS32_NOI:
eb043451 7584 case R_ARM_REL32:
bb224fc3 7585 case R_ARM_REL32_NOI:
eb043451
PB		 7586 case R_ARM_PC24:
7587 case R_ARM_PLT32:
5b5bb741
PB		 7588 case R_ARM_CALL:
7589 case R_ARM_JUMP24:
eb043451 7590 case R_ARM_PREL31:
c19d1205 7591 case R_ARM_THM_CALL:
bd97cb95
DJ		 7592 case R_ARM_THM_JUMP24:
7593 case R_ARM_THM_JUMP19:
b6895b4f
PB		 7594 case R_ARM_MOVW_ABS_NC:
7595 case R_ARM_MOVT_ABS:
7596 case R_ARM_MOVW_PREL_NC:
7597 case R_ARM_MOVT_PREL:
7598 case R_ARM_THM_MOVW_ABS_NC:
7599 case R_ARM_THM_MOVT_ABS:
7600 case R_ARM_THM_MOVW_PREL_NC:
7601 case R_ARM_THM_MOVT_PREL:
b7693d02
DJ		 7602 /* Should the interworking branches be here also? */
7603
3eb128b2 7604 if (h != NULL)
eb043451
PB		 7605 {
7606 struct elf32_arm_link_hash_entry *eh;
7607 struct elf32_arm_relocs_copied **pp;
7608 struct elf32_arm_relocs_copied *p;
5e681ec4 7609
b7693d02 7610 eh = (struct elf32_arm_link_hash_entry *) h;
5e681ec4 7611
eb043451 7612 if (h->plt.refcount > 0)
b7693d02
DJ		 7613 {
7614 h->plt.refcount -= 1;
bd97cb95
DJ		 7615 if (r_type == R_ARM_THM_CALL)
7616 eh->plt_maybe_thumb_refcount--;
7617
7618 if (r_type == R_ARM_THM_JUMP24
7619 || r_type == R_ARM_THM_JUMP19)
b7693d02
DJ		 7620 eh->plt_thumb_refcount--;
7621 }
5e681ec4 7622
eb043451 7623 if (r_type == R_ARM_ABS32
bb224fc3
MS		 7624 || r_type == R_ARM_REL32
7625 || r_type == R_ARM_ABS32_NOI
7626 || r_type == R_ARM_REL32_NOI)
eb043451 7627 {
eb043451
PB		 7628 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
7629 pp = &p->next)
7630 if (p->section == sec)
7631 {
7632 p->count -= 1;
bb224fc3
MS		 7633 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
7634 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
ba93b8ac 7635 p->pc_count -= 1;
eb043451
PB		 7636 if (p->count == 0)
7637 *pp = p->next;
7638 break;
7639 }
7640 }
7641 }
7642 break;
5e681ec4 7643
eb043451
PB		 7644 default:
7645 break;
7646 }
7647 }
5e681ec4 7648
b34976b6 7649 return TRUE;
252b5132
RH		 7650}
7651
780a67af
NC		 7652/* Look through the relocs for a section during the first phase. */
7653
b34976b6 7654static bfd_boolean
57e8b36a
NC		 7655elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
7656 asection *sec, const Elf_Internal_Rela *relocs)
252b5132 7657{
b34976b6
AM		 7658 Elf_Internal_Shdr *symtab_hdr;
7659 struct elf_link_hash_entry **sym_hashes;
b34976b6
AM		 7660 const Elf_Internal_Rela *rel;
7661 const Elf_Internal_Rela *rel_end;
7662 bfd *dynobj;
5e681ec4 7663 asection *sreloc;
b34976b6 7664 bfd_vma *local_got_offsets;
5e681ec4 7665 struct elf32_arm_link_hash_table *htab;
9a5aca8c 7666
1049f94e 7667 if (info->relocatable)
b34976b6 7668 return TRUE;
9a5aca8c 7669
0ffa91dd
NC		 7670 BFD_ASSERT (is_arm_elf (abfd));
7671
5e681ec4
PB		 7672 htab = elf32_arm_hash_table (info);
7673 sreloc = NULL;
9a5aca8c 7674
67687978
PB		 7675 /* Create dynamic sections for relocatable executables so that we can
7676 copy relocations. */
7677 if (htab->root.is_relocatable_executable
7678 && ! htab->root.dynamic_sections_created)
7679 {
7680 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
7681 return FALSE;
7682 }
7683
252b5132
RH		 7684 dynobj = elf_hash_table (info)->dynobj;
7685 local_got_offsets = elf_local_got_offsets (abfd);
f21f3fe0 7686
0ffa91dd 7687 symtab_hdr = & elf_symtab_hdr (abfd);
252b5132 7688 sym_hashes = elf_sym_hashes (abfd);
9b485d32 7689
252b5132
RH		 7690 rel_end = relocs + sec->reloc_count;
7691 for (rel = relocs; rel < rel_end; rel++)
7692 {
7693 struct elf_link_hash_entry *h;
b7693d02 7694 struct elf32_arm_link_hash_entry *eh;
252b5132 7695 unsigned long r_symndx;
eb043451 7696 int r_type;
9a5aca8c 7697
252b5132 7698 r_symndx = ELF32_R_SYM (rel->r_info);
eb043451 7699 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 7700 r_type = arm_real_reloc_type (htab, r_type);
ba93b8ac
DJ		 7701
7702 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7703 {
7704 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
7705 r_symndx);
7706 return FALSE;
7707 }
7708
252b5132
RH		 7709 if (r_symndx < symtab_hdr->sh_info)
7710 h = NULL;
7711 else
973a3492
L		 7712 {
7713 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7714 while (h->root.type == bfd_link_hash_indirect
7715 || h->root.type == bfd_link_hash_warning)
7716 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7717 }
9a5aca8c 7718
b7693d02
DJ		 7719 eh = (struct elf32_arm_link_hash_entry *) h;
7720
eb043451 7721 switch (r_type)
252b5132 7722 {
5e681ec4 7723 case R_ARM_GOT32:
eb043451 7724 case R_ARM_GOT_PREL:
ba93b8ac
DJ		 7725 case R_ARM_TLS_GD32:
7726 case R_ARM_TLS_IE32:
5e681ec4 7727 /* This symbol requires a global offset table entry. */
ba93b8ac
DJ		 7728 {
7729 int tls_type, old_tls_type;
5e681ec4 7730
ba93b8ac
DJ		 7731 switch (r_type)
7732 {
7733 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
7734 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
7735 default: tls_type = GOT_NORMAL; break;
7736 }
252b5132 7737
ba93b8ac
DJ		 7738 if (h != NULL)
7739 {
7740 h->got.refcount++;
7741 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
7742 }
7743 else
7744 {
7745 bfd_signed_vma *local_got_refcounts;
7746
7747 /* This is a global offset table entry for a local symbol. */
7748 local_got_refcounts = elf_local_got_refcounts (abfd);
7749 if (local_got_refcounts == NULL)
7750 {
7751 bfd_size_type size;
7752
7753 size = symtab_hdr->sh_info;
7754 size *= (sizeof (bfd_signed_vma) + sizeof(char));
7755 local_got_refcounts = bfd_zalloc (abfd, size);
7756 if (local_got_refcounts == NULL)
7757 return FALSE;
7758 elf_local_got_refcounts (abfd) = local_got_refcounts;
7759 elf32_arm_local_got_tls_type (abfd)
7760 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
7761 }
7762 local_got_refcounts[r_symndx] += 1;
7763 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
7764 }
7765
7766 /* We will already have issued an error message if there is a
7767 TLS / non-TLS mismatch, based on the symbol type. We don't
7768 support any linker relaxations. So just combine any TLS
7769 types needed. */
7770 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
7771 && tls_type != GOT_NORMAL)
7772 tls_type |= old_tls_type;
7773
7774 if (old_tls_type != tls_type)
7775 {
7776 if (h != NULL)
7777 elf32_arm_hash_entry (h)->tls_type = tls_type;
7778 else
7779 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
7780 }
7781 }
7782 /* Fall through */
7783
7784 case R_ARM_TLS_LDM32:
7785 if (r_type == R_ARM_TLS_LDM32)
7786 htab->tls_ldm_got.refcount++;
7787 /* Fall through */
252b5132 7788
c19d1205 7789 case R_ARM_GOTOFF32:
5e681ec4
PB		 7790 case R_ARM_GOTPC:
7791 if (htab->sgot == NULL)
7792 {
7793 if (htab->root.dynobj == NULL)
7794 htab->root.dynobj = abfd;
7795 if (!create_got_section (htab->root.dynobj, info))
7796 return FALSE;
7797 }
252b5132
RH		 7798 break;
7799
00a97672
RS		 7800 case R_ARM_ABS12:
7801 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7802 ldr __GOTT_INDEX__ offsets. */
7803 if (!htab->vxworks_p)
7804 break;
7805 /* Fall through */
7806
252b5132 7807 case R_ARM_ABS32:
bb224fc3 7808 case R_ARM_ABS32_NOI:
252b5132 7809 case R_ARM_REL32:
bb224fc3 7810 case R_ARM_REL32_NOI:
252b5132 7811 case R_ARM_PC24:
7359ea65 7812 case R_ARM_PLT32:
5b5bb741
PB		 7813 case R_ARM_CALL:
7814 case R_ARM_JUMP24:
eb043451 7815 case R_ARM_PREL31:
c19d1205 7816 case R_ARM_THM_CALL:
bd97cb95
DJ		 7817 case R_ARM_THM_JUMP24:
7818 case R_ARM_THM_JUMP19:
b6895b4f
PB		 7819 case R_ARM_MOVW_ABS_NC:
7820 case R_ARM_MOVT_ABS:
7821 case R_ARM_MOVW_PREL_NC:
7822 case R_ARM_MOVT_PREL:
7823 case R_ARM_THM_MOVW_ABS_NC:
7824 case R_ARM_THM_MOVT_ABS:
7825 case R_ARM_THM_MOVW_PREL_NC:
7826 case R_ARM_THM_MOVT_PREL:
b7693d02 7827 /* Should the interworking branches be listed here? */
7359ea65 7828 if (h != NULL)
5e681ec4
PB		 7829 {
7830 /* If this reloc is in a read-only section, we might
7831 need a copy reloc. We can't check reliably at this
7832 stage whether the section is read-only, as input
7833 sections have not yet been mapped to output sections.
7834 Tentatively set the flag for now, and correct in
7835 adjust_dynamic_symbol. */
7359ea65 7836 if (!info->shared)
f5385ebf 7837 h->non_got_ref = 1;
7359ea65 7838
5e681ec4 7839 /* We may need a .plt entry if the function this reloc
c84cd8ee
DJ		 7840 refers to is in a different object. We can't tell for
7841 sure yet, because something later might force the
7842 symbol local. */
bb224fc3
MS		 7843 if (r_type != R_ARM_ABS32
7844 && r_type != R_ARM_REL32
7845 && r_type != R_ARM_ABS32_NOI
d3753b85
RS		 7846 && r_type != R_ARM_REL32_NOI
7847 && r_type != R_ARM_ABS12)
f5385ebf 7848 h->needs_plt = 1;
4f199be3
DJ		 7849
7850 /* If we create a PLT entry, this relocation will reference
7851 it, even if it's an ABS32 relocation. */
7852 h->plt.refcount += 1;
b7693d02 7853
bd97cb95
DJ		 7854 /* It's too early to use htab->use_blx here, so we have to
7855 record possible blx references separately from
7856 relocs that definitely need a thumb stub. */
7857
c19d1205 7858 if (r_type == R_ARM_THM_CALL)
bd97cb95
DJ		 7859 eh->plt_maybe_thumb_refcount += 1;
7860
7861 if (r_type == R_ARM_THM_JUMP24
7862 || r_type == R_ARM_THM_JUMP19)
b7693d02 7863 eh->plt_thumb_refcount += 1;
5e681ec4
PB		 7864 }
7865
67687978
PB		 7866 /* If we are creating a shared library or relocatable executable,
7867 and this is a reloc against a global symbol, or a non PC
7868 relative reloc against a local symbol, then we need to copy
7869 the reloc into the shared library. However, if we are linking
7870 with -Bsymbolic, we do not need to copy a reloc against a
252b5132
RH		 7871 global symbol which is defined in an object we are
7872 including in the link (i.e., DEF_REGULAR is set). At
7873 this point we have not seen all the input files, so it is
7874 possible that DEF_REGULAR is not set now but will be set
7875 later (it is never cleared). We account for that
7876 possibility below by storing information in the
5e681ec4 7877 relocs_copied field of the hash table entry. */
67687978 7878 if ((info->shared || htab->root.is_relocatable_executable)
5e681ec4 7879 && (sec->flags & SEC_ALLOC) != 0
bb224fc3 7880 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
71a976dd
DJ		 7881 || (h != NULL && ! h->needs_plt
7882 && (! info->symbolic || ! h->def_regular))))
252b5132 7883 {
5e681ec4
PB		 7884 struct elf32_arm_relocs_copied *p, **head;
7885
252b5132
RH		 7886 /* When creating a shared object, we must copy these
7887 reloc types into the output file. We create a reloc
7888 section in dynobj and make room for this reloc. */
7889 if (sreloc == NULL)
7890 {
7891 const char * name;
7892
7893 name = (bfd_elf_string_from_elf_section
7894 (abfd,
7895 elf_elfheader (abfd)->e_shstrndx,
7896 elf_section_data (sec)->rel_hdr.sh_name));
7897 if (name == NULL)
b34976b6 7898 return FALSE;
252b5132 7899
00a97672 7900 BFD_ASSERT (reloc_section_p (htab, name, sec));
252b5132
RH		 7901
7902 sreloc = bfd_get_section_by_name (dynobj, name);
7903 if (sreloc == NULL)
7904 {
7905 flagword flags;
7906
252b5132
RH		 7907 flags = (SEC_HAS_CONTENTS | SEC_READONLY
7908 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
e5a52504
MM		 7909 if ((sec->flags & SEC_ALLOC) != 0
7910 /* BPABI objects never have dynamic
7911 relocations mapped. */
7912 && !htab->symbian_p)
252b5132 7913 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L		 7914 sreloc = bfd_make_section_with_flags (dynobj,
7915 name,
7916 flags);
252b5132 7917 if (sreloc == NULL
252b5132 7918 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 7919 return FALSE;
252b5132 7920 }
5e681ec4
PB		 7921
7922 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH		 7923 }
7924
5e681ec4
PB		 7925 /* If this is a global symbol, we count the number of
7926 relocations we need for this symbol. */
7927 if (h != NULL)
252b5132 7928 {
5e681ec4
PB		 7929 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
7930 }
7931 else
7932 {
7933 /* Track dynamic relocs needed for local syms too.
7934 We really need local syms available to do this
7935 easily. Oh well. */
57e8b36a 7936
5e681ec4 7937 asection *s;
6edfbbad
DJ		 7938 void *vpp;
7939
5e681ec4
PB		 7940 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
7941 sec, r_symndx);
7942 if (s == NULL)
7943 return FALSE;
57e8b36a 7944
6edfbbad
DJ		 7945 vpp = &elf_section_data (s)->local_dynrel;
7946 head = (struct elf32_arm_relocs_copied **) vpp;
5e681ec4 7947 }
57e8b36a 7948
5e681ec4
PB		 7949 p = *head;
7950 if (p == NULL || p->section != sec)
7951 {
7952 bfd_size_type amt = sizeof *p;
57e8b36a 7953
5e681ec4 7954 p = bfd_alloc (htab->root.dynobj, amt);
252b5132 7955 if (p == NULL)
5e681ec4
PB		 7956 return FALSE;
7957 p->next = *head;
7958 *head = p;
7959 p->section = sec;
7960 p->count = 0;
ba93b8ac 7961 p->pc_count = 0;
252b5132 7962 }
57e8b36a 7963
bb224fc3 7964 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
ba93b8ac 7965 p->pc_count += 1;
71a976dd 7966 p->count += 1;
252b5132
RH		 7967 }
7968 break;
7969
7970 /* This relocation describes the C++ object vtable hierarchy.
7971 Reconstruct it for later use during GC. */
7972 case R_ARM_GNU_VTINHERIT:
c152c796 7973 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 7974 return FALSE;
252b5132 7975 break;
9a5aca8c 7976
252b5132
RH		 7977 /* This relocation describes which C++ vtable entries are actually
7978 used. Record for later use during GC. */
7979 case R_ARM_GNU_VTENTRY:
d17e0c6e
JB		 7980 BFD_ASSERT (h != NULL);
7981 if (h != NULL
7982 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 7983 return FALSE;
252b5132
RH		 7984 break;
7985 }
7986 }
f21f3fe0 7987
b34976b6 7988 return TRUE;
252b5132
RH		 7989}
7990
6a5bb875
PB		 7991/* Unwinding tables are not referenced directly. This pass marks them as
7992 required if the corresponding code section is marked. */
7993
7994static bfd_boolean
7995elf32_arm_gc_mark_extra_sections(struct bfd_link_info *info,
7996 elf_gc_mark_hook_fn gc_mark_hook)
7997{
7998 bfd *sub;
7999 Elf_Internal_Shdr **elf_shdrp;
8000 bfd_boolean again;
8001
8002 /* Marking EH data may cause additional code sections to be marked,
8003 requiring multiple passes. */
8004 again = TRUE;
8005 while (again)
8006 {
8007 again = FALSE;
8008 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
8009 {
8010 asection *o;
8011
0ffa91dd 8012 if (! is_arm_elf (sub))
6a5bb875
PB		 8013 continue;
8014
8015 elf_shdrp = elf_elfsections (sub);
8016 for (o = sub->sections; o != NULL; o = o->next)
8017 {
8018 Elf_Internal_Shdr *hdr;
0ffa91dd 8019
6a5bb875
PB		 8020 hdr = &elf_section_data (o)->this_hdr;
8021 if (hdr->sh_type == SHT_ARM_EXIDX && hdr->sh_link
8022 && !o->gc_mark
8023 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
8024 {
8025 again = TRUE;
8026 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
8027 return FALSE;
8028 }
8029 }
8030 }
8031 }
8032
8033 return TRUE;
8034}
8035
3c9458e9
NC		 8036/* Treat mapping symbols as special target symbols. */
8037
8038static bfd_boolean
8039elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
8040{
b0796911
PB		 8041 return bfd_is_arm_special_symbol_name (sym->name,
8042 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
3c9458e9
NC		 8043}
8044
0367ecfb
NC		 8045/* This is a copy of elf_find_function() from elf.c except that
8046 ARM mapping symbols are ignored when looking for function names
8047 and STT_ARM_TFUNC is considered to a function type. */
252b5132 8048
0367ecfb
NC		 8049static bfd_boolean
8050arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
8051 asection * section,
8052 asymbol ** symbols,
8053 bfd_vma offset,
8054 const char ** filename_ptr,
8055 const char ** functionname_ptr)
8056{
8057 const char * filename = NULL;
8058 asymbol * func = NULL;
8059 bfd_vma low_func = 0;
8060 asymbol ** p;
252b5132
RH		 8061
8062 for (p = symbols; *p != NULL; p++)
8063 {
8064 elf_symbol_type *q;
8065
8066 q = (elf_symbol_type *) *p;
8067
252b5132
RH		 8068 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
8069 {
8070 default:
8071 break;
8072 case STT_FILE:
8073 filename = bfd_asymbol_name (&q->symbol);
8074 break;
252b5132
RH		 8075 case STT_FUNC:
8076 case STT_ARM_TFUNC:
9d2da7ca 8077 case STT_NOTYPE:
b0796911 8078 /* Skip mapping symbols. */
0367ecfb 8079 if ((q->symbol.flags & BSF_LOCAL)
b0796911
PB		 8080 && bfd_is_arm_special_symbol_name (q->symbol.name,
8081 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
0367ecfb
NC		 8082 continue;
8083 /* Fall through. */
6b40fcba 8084 if (bfd_get_section (&q->symbol) == section
252b5132
RH		 8085 && q->symbol.value >= low_func
8086 && q->symbol.value <= offset)
8087 {
8088 func = (asymbol *) q;
8089 low_func = q->symbol.value;
8090 }
8091 break;
8092 }
8093 }
8094
8095 if (func == NULL)
b34976b6 8096 return FALSE;
252b5132 8097
0367ecfb
NC		 8098 if (filename_ptr)
8099 *filename_ptr = filename;
8100 if (functionname_ptr)
8101 *functionname_ptr = bfd_asymbol_name (func);
8102
8103 return TRUE;
8104}
8105
8106
8107/* Find the nearest line to a particular section and offset, for error
8108 reporting. This code is a duplicate of the code in elf.c, except
8109 that it uses arm_elf_find_function. */
8110
8111static bfd_boolean
8112elf32_arm_find_nearest_line (bfd * abfd,
8113 asection * section,
8114 asymbol ** symbols,
8115 bfd_vma offset,
8116 const char ** filename_ptr,
8117 const char ** functionname_ptr,
8118 unsigned int * line_ptr)
8119{
8120 bfd_boolean found = FALSE;
8121
8122 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
8123
8124 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
8125 filename_ptr, functionname_ptr,
8126 line_ptr, 0,
8127 & elf_tdata (abfd)->dwarf2_find_line_info))
8128 {
8129 if (!*functionname_ptr)
8130 arm_elf_find_function (abfd, section, symbols, offset,
8131 *filename_ptr ? NULL : filename_ptr,
8132 functionname_ptr);
f21f3fe0 8133
0367ecfb
NC		 8134 return TRUE;
8135 }
8136
8137 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
8138 & found, filename_ptr,
8139 functionname_ptr, line_ptr,
8140 & elf_tdata (abfd)->line_info))
8141 return FALSE;
8142
8143 if (found && (*functionname_ptr || *line_ptr))
8144 return TRUE;
8145
8146 if (symbols == NULL)
8147 return FALSE;
8148
8149 if (! arm_elf_find_function (abfd, section, symbols, offset,
8150 filename_ptr, functionname_ptr))
8151 return FALSE;
8152
8153 *line_ptr = 0;
b34976b6 8154 return TRUE;
252b5132
RH		 8155}
8156
4ab527b0
FF		 8157static bfd_boolean
8158elf32_arm_find_inliner_info (bfd * abfd,
8159 const char ** filename_ptr,
8160 const char ** functionname_ptr,
8161 unsigned int * line_ptr)
8162{
8163 bfd_boolean found;
8164 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
8165 functionname_ptr, line_ptr,
8166 & elf_tdata (abfd)->dwarf2_find_line_info);
8167 return found;
8168}
8169
252b5132
RH		 8170/* Adjust a symbol defined by a dynamic object and referenced by a
8171 regular object. The current definition is in some section of the
8172 dynamic object, but we're not including those sections. We have to
8173 change the definition to something the rest of the link can
8174 understand. */
8175
b34976b6 8176static bfd_boolean
57e8b36a
NC		 8177elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
8178 struct elf_link_hash_entry * h)
252b5132
RH		 8179{
8180 bfd * dynobj;
8181 asection * s;
b7693d02 8182 struct elf32_arm_link_hash_entry * eh;
67687978 8183 struct elf32_arm_link_hash_table *globals;
252b5132 8184
67687978 8185 globals = elf32_arm_hash_table (info);
252b5132
RH		 8186 dynobj = elf_hash_table (info)->dynobj;
8187
8188 /* Make sure we know what is going on here. */
8189 BFD_ASSERT (dynobj != NULL
f5385ebf 8190 && (h->needs_plt
f6e332e6 8191 || h->u.weakdef != NULL
f5385ebf
AM		 8192 || (h->def_dynamic
8193 && h->ref_regular
8194 && !h->def_regular)));
252b5132 8195
b7693d02
DJ		 8196 eh = (struct elf32_arm_link_hash_entry *) h;
8197
252b5132
RH		 8198 /* If this is a function, put it in the procedure linkage table. We
8199 will fill in the contents of the procedure linkage table later,
8200 when we know the address of the .got section. */
b7693d02 8201 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
f5385ebf 8202 || h->needs_plt)
252b5132 8203 {
5e681ec4
PB		 8204 if (h->plt.refcount <= 0
8205 || SYMBOL_CALLS_LOCAL (info, h)
8206 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8207 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 8208 {
8209 /* This case can occur if we saw a PLT32 reloc in an input
5e681ec4
PB		 8210 file, but the symbol was never referred to by a dynamic
8211 object, or if all references were garbage collected. In
8212 such a case, we don't actually need to build a procedure
8213 linkage table, and we can just do a PC24 reloc instead. */
8214 h->plt.offset = (bfd_vma) -1;
b7693d02 8215 eh->plt_thumb_refcount = 0;
bd97cb95 8216 eh->plt_maybe_thumb_refcount = 0;
f5385ebf 8217 h->needs_plt = 0;
252b5132
RH		 8218 }
8219
b34976b6 8220 return TRUE;
252b5132 8221 }
5e681ec4 8222 else
b7693d02
DJ		 8223 {
8224 /* It's possible that we incorrectly decided a .plt reloc was
8225 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8226 in check_relocs. We can't decide accurately between function
8227 and non-function syms in check-relocs; Objects loaded later in
8228 the link may change h->type. So fix it now. */
8229 h->plt.offset = (bfd_vma) -1;
8230 eh->plt_thumb_refcount = 0;
bd97cb95 8231 eh->plt_maybe_thumb_refcount = 0;
b7693d02 8232 }
252b5132
RH		 8233
8234 /* If this is a weak symbol, and there is a real definition, the
8235 processor independent code will have arranged for us to see the
8236 real definition first, and we can just use the same value. */
f6e332e6 8237 if (h->u.weakdef != NULL)
252b5132 8238 {
f6e332e6
AM		 8239 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
8240 || h->u.weakdef->root.type == bfd_link_hash_defweak);
8241 h->root.u.def.section = h->u.weakdef->root.u.def.section;
8242 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 8243 return TRUE;
252b5132
RH		 8244 }
8245
ba93b8ac
DJ		 8246 /* If there are no non-GOT references, we do not need a copy
8247 relocation. */
8248 if (!h->non_got_ref)
8249 return TRUE;
8250
252b5132
RH		 8251 /* This is a reference to a symbol defined by a dynamic object which
8252 is not a function. */
8253
8254 /* If we are creating a shared library, we must presume that the
8255 only references to the symbol are via the global offset table.
8256 For such cases we need not do anything here; the relocations will
67687978
PB		 8257 be handled correctly by relocate_section. Relocatable executables
8258 can reference data in shared objects directly, so we don't need to
8259 do anything here. */
8260 if (info->shared || globals->root.is_relocatable_executable)
b34976b6 8261 return TRUE;
252b5132 8262
909272ee
AM		 8263 if (h->size == 0)
8264 {
8265 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
8266 h->root.root.string);
8267 return TRUE;
8268 }
8269
252b5132
RH		 8270 /* We must allocate the symbol in our .dynbss section, which will
8271 become part of the .bss section of the executable. There will be
8272 an entry for this symbol in the .dynsym section. The dynamic
8273 object will contain position independent code, so all references
8274 from the dynamic object to this symbol will go through the global
8275 offset table. The dynamic linker will use the .dynsym entry to
8276 determine the address it must put in the global offset table, so
8277 both the dynamic object and the regular object will refer to the
8278 same memory location for the variable. */
252b5132
RH		 8279 s = bfd_get_section_by_name (dynobj, ".dynbss");
8280 BFD_ASSERT (s != NULL);
8281
8282 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8283 copy the initial value out of the dynamic object and into the
8284 runtime process image. We need to remember the offset into the
00a97672 8285 .rel(a).bss section we are going to use. */
252b5132
RH		 8286 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
8287 {
8288 asection *srel;
8289
00a97672 8290 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
252b5132 8291 BFD_ASSERT (srel != NULL);
00a97672 8292 srel->size += RELOC_SIZE (globals);
f5385ebf 8293 h->needs_copy = 1;
252b5132
RH		 8294 }
8295
027297b7 8296 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 8297}
8298
5e681ec4
PB		 8299/* Allocate space in .plt, .got and associated reloc sections for
8300 dynamic relocs. */
8301
8302static bfd_boolean
57e8b36a 8303allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
5e681ec4
PB		 8304{
8305 struct bfd_link_info *info;
8306 struct elf32_arm_link_hash_table *htab;
8307 struct elf32_arm_link_hash_entry *eh;
8308 struct elf32_arm_relocs_copied *p;
bd97cb95 8309 bfd_signed_vma thumb_refs;
5e681ec4 8310
b7693d02
DJ		 8311 eh = (struct elf32_arm_link_hash_entry *) h;
8312
5e681ec4
PB		 8313 if (h->root.type == bfd_link_hash_indirect)
8314 return TRUE;
8315
8316 if (h->root.type == bfd_link_hash_warning)
8317 /* When warning symbols are created, they **replace** the "real"
8318 entry in the hash table, thus we never get to see the real
8319 symbol in a hash traversal. So look at it now. */
8320 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8321
8322 info = (struct bfd_link_info *) inf;
8323 htab = elf32_arm_hash_table (info);
8324
8325 if (htab->root.dynamic_sections_created
8326 && h->plt.refcount > 0)
8327 {
8328 /* Make sure this symbol is output as a dynamic symbol.
8329 Undefined weak syms won't yet be marked as dynamic. */
8330 if (h->dynindx == -1
f5385ebf 8331 && !h->forced_local)
5e681ec4 8332 {
c152c796 8333 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 8334 return FALSE;
8335 }
8336
8337 if (info->shared
7359ea65 8338 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
5e681ec4
PB		 8339 {
8340 asection *s = htab->splt;
8341
8342 /* If this is the first .plt entry, make room for the special
8343 first entry. */
eea6121a 8344 if (s->size == 0)
e5a52504 8345 s->size += htab->plt_header_size;
5e681ec4 8346
eea6121a 8347 h->plt.offset = s->size;
5e681ec4 8348
b7693d02
DJ		 8349 /* If we will insert a Thumb trampoline before this PLT, leave room
8350 for it. */
bd97cb95
DJ		 8351 thumb_refs = eh->plt_thumb_refcount;
8352 if (!htab->use_blx)
8353 thumb_refs += eh->plt_maybe_thumb_refcount;
8354
8355 if (thumb_refs > 0)
b7693d02
DJ		 8356 {
8357 h->plt.offset += PLT_THUMB_STUB_SIZE;
8358 s->size += PLT_THUMB_STUB_SIZE;
8359 }
8360
5e681ec4
PB		 8361 /* If this symbol is not defined in a regular file, and we are
8362 not generating a shared library, then set the symbol to this
8363 location in the .plt. This is required to make function
8364 pointers compare as equal between the normal executable and
8365 the shared library. */
8366 if (! info->shared
f5385ebf 8367 && !h->def_regular)
5e681ec4
PB		 8368 {
8369 h->root.u.def.section = s;
8370 h->root.u.def.value = h->plt.offset;
b7693d02
DJ		 8371
8372 /* Make sure the function is not marked as Thumb, in case
8373 it is the target of an ABS32 relocation, which will
8374 point to the PLT entry. */
8375 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
8376 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
5e681ec4
PB		 8377 }
8378
8379 /* Make room for this entry. */
e5a52504 8380 s->size += htab->plt_entry_size;
5e681ec4 8381
e5a52504 8382 if (!htab->symbian_p)
b7693d02
DJ		 8383 {
8384 /* We also need to make an entry in the .got.plt section, which
8385 will be placed in the .got section by the linker script. */
8386 eh->plt_got_offset = htab->sgotplt->size;
8387 htab->sgotplt->size += 4;
8388 }
5e681ec4 8389
00a97672
RS		 8390 /* We also need to make an entry in the .rel(a).plt section. */
8391 htab->srelplt->size += RELOC_SIZE (htab);
8392
8393 /* VxWorks executables have a second set of relocations for
8394 each PLT entry. They go in a separate relocation section,
8395 which is processed by the kernel loader. */
8396 if (htab->vxworks_p && !info->shared)
8397 {
8398 /* There is a relocation for the initial PLT entry:
8399 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8400 if (h->plt.offset == htab->plt_header_size)
8401 htab->srelplt2->size += RELOC_SIZE (htab);
8402
8403 /* There are two extra relocations for each subsequent
8404 PLT entry: an R_ARM_32 relocation for the GOT entry,
8405 and an R_ARM_32 relocation for the PLT entry. */
8406 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
8407 }
5e681ec4
PB		 8408 }
8409 else
8410 {
8411 h->plt.offset = (bfd_vma) -1;
f5385ebf 8412 h->needs_plt = 0;
5e681ec4
PB		 8413 }
8414 }
8415 else
8416 {
8417 h->plt.offset = (bfd_vma) -1;
f5385ebf 8418 h->needs_plt = 0;
5e681ec4
PB		 8419 }
8420
8421 if (h->got.refcount > 0)
8422 {
8423 asection *s;
8424 bfd_boolean dyn;
ba93b8ac
DJ		 8425 int tls_type = elf32_arm_hash_entry (h)->tls_type;
8426 int indx;
5e681ec4
PB		 8427
8428 /* Make sure this symbol is output as a dynamic symbol.
8429 Undefined weak syms won't yet be marked as dynamic. */
8430 if (h->dynindx == -1
f5385ebf 8431 && !h->forced_local)
5e681ec4 8432 {
c152c796 8433 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 8434 return FALSE;
8435 }
8436
e5a52504
MM		 8437 if (!htab->symbian_p)
8438 {
8439 s = htab->sgot;
8440 h->got.offset = s->size;
ba93b8ac
DJ		 8441
8442 if (tls_type == GOT_UNKNOWN)
8443 abort ();
8444
8445 if (tls_type == GOT_NORMAL)
8446 /* Non-TLS symbols need one GOT slot. */
8447 s->size += 4;
8448 else
8449 {
8450 if (tls_type & GOT_TLS_GD)
8451 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8452 s->size += 8;
8453 if (tls_type & GOT_TLS_IE)
8454 /* R_ARM_TLS_IE32 needs one GOT slot. */
8455 s->size += 4;
8456 }
8457
e5a52504 8458 dyn = htab->root.dynamic_sections_created;
ba93b8ac
DJ		 8459
8460 indx = 0;
8461 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8462 && (!info->shared
8463 || !SYMBOL_REFERENCES_LOCAL (info, h)))
8464 indx = h->dynindx;
8465
8466 if (tls_type != GOT_NORMAL
8467 && (info->shared || indx != 0)
8468 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8469 || h->root.type != bfd_link_hash_undefweak))
8470 {
8471 if (tls_type & GOT_TLS_IE)
00a97672 8472 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 8473
8474 if (tls_type & GOT_TLS_GD)
00a97672 8475 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 8476
8477 if ((tls_type & GOT_TLS_GD) && indx != 0)
00a97672 8478 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 8479 }
8480 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8481 || h->root.type != bfd_link_hash_undefweak)
8482 && (info->shared
8483 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
00a97672 8484 htab->srelgot->size += RELOC_SIZE (htab);
e5a52504 8485 }
5e681ec4
PB		 8486 }
8487 else
8488 h->got.offset = (bfd_vma) -1;
8489
a4fd1a8e
PB		 8490 /* Allocate stubs for exported Thumb functions on v4t. */
8491 if (!htab->use_blx && h->dynindx != -1
0eaedd0e 8492 && h->def_regular
a4fd1a8e
PB		 8493 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
8494 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
8495 {
8496 struct elf_link_hash_entry * th;
8497 struct bfd_link_hash_entry * bh;
8498 struct elf_link_hash_entry * myh;
8499 char name[1024];
8500 asection *s;
8501 bh = NULL;
8502 /* Create a new symbol to regist the real location of the function. */
8503 s = h->root.u.def.section;
8504 sprintf(name, "__real_%s", h->root.root.string);
8505 _bfd_generic_link_add_one_symbol (info, s->owner,
8506 name, BSF_GLOBAL, s,
8507 h->root.u.def.value,
8508 NULL, TRUE, FALSE, &bh);
8509
8510 myh = (struct elf_link_hash_entry *) bh;
8511 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
8512 myh->forced_local = 1;
8513 eh->export_glue = myh;
8514 th = record_arm_to_thumb_glue (info, h);
8515 /* Point the symbol at the stub. */
8516 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
8517 h->root.u.def.section = th->root.u.def.section;
8518 h->root.u.def.value = th->root.u.def.value & ~1;
8519 }
8520
5e681ec4
PB		 8521 if (eh->relocs_copied == NULL)
8522 return TRUE;
8523
8524 /* In the shared -Bsymbolic case, discard space allocated for
8525 dynamic pc-relative relocs against symbols which turn out to be
8526 defined in regular objects. For the normal shared case, discard
8527 space for pc-relative relocs that have become local due to symbol
8528 visibility changes. */
8529
67687978 8530 if (info->shared || htab->root.is_relocatable_executable)
5e681ec4 8531 {
7bdca076 8532 /* The only relocs that use pc_count are R_ARM_REL32 and
bb224fc3
MS		 8533 R_ARM_REL32_NOI, which will appear on something like
8534 ".long foo - .". We want calls to protected symbols to resolve
8535 directly to the function rather than going via the plt. If people
8536 want function pointer comparisons to work as expected then they
8537 should avoid writing assembly like ".long foo - .". */
ba93b8ac
DJ		 8538 if (SYMBOL_CALLS_LOCAL (info, h))
8539 {
8540 struct elf32_arm_relocs_copied **pp;
8541
8542 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
8543 {
8544 p->count -= p->pc_count;
8545 p->pc_count = 0;
8546 if (p->count == 0)
8547 *pp = p->next;
8548 else
8549 pp = &p->next;
8550 }
8551 }
8552
8553 /* Also discard relocs on undefined weak syms with non-default
7359ea65 8554 visibility. */
22d606e9 8555 if (eh->relocs_copied != NULL
5e681ec4 8556 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 8557 {
8558 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8559 eh->relocs_copied = NULL;
8560
8561 /* Make sure undefined weak symbols are output as a dynamic
8562 symbol in PIEs. */
8563 else if (h->dynindx == -1
8564 && !h->forced_local)
8565 {
8566 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8567 return FALSE;
8568 }
8569 }
8570
67687978
PB		 8571 else if (htab->root.is_relocatable_executable && h->dynindx == -1
8572 && h->root.type == bfd_link_hash_new)
8573 {
8574 /* Output absolute symbols so that we can create relocations
8575 against them. For normal symbols we output a relocation
8576 against the section that contains them. */
8577 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8578 return FALSE;
8579 }
8580
5e681ec4
PB		 8581 }
8582 else
8583 {
8584 /* For the non-shared case, discard space for relocs against
8585 symbols which turn out to need copy relocs or are not
8586 dynamic. */
8587
f5385ebf
AM		 8588 if (!h->non_got_ref
8589 && ((h->def_dynamic
8590 && !h->def_regular)
5e681ec4
PB		 8591 || (htab->root.dynamic_sections_created
8592 && (h->root.type == bfd_link_hash_undefweak
8593 || h->root.type == bfd_link_hash_undefined))))
8594 {
8595 /* Make sure this symbol is output as a dynamic symbol.
8596 Undefined weak syms won't yet be marked as dynamic. */
8597 if (h->dynindx == -1
f5385ebf 8598 && !h->forced_local)
5e681ec4 8599 {
c152c796 8600 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 8601 return FALSE;
8602 }
8603
8604 /* If that succeeded, we know we'll be keeping all the
8605 relocs. */
8606 if (h->dynindx != -1)
8607 goto keep;
8608 }
8609
8610 eh->relocs_copied = NULL;
8611
8612 keep: ;
8613 }
8614
8615 /* Finally, allocate space. */
8616 for (p = eh->relocs_copied; p != NULL; p = p->next)
8617 {
8618 asection *sreloc = elf_section_data (p->section)->sreloc;
00a97672 8619 sreloc->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB		 8620 }
8621
8622 return TRUE;
8623}
8624
08d1f311
DJ		 8625/* Find any dynamic relocs that apply to read-only sections. */
8626
8627static bfd_boolean
8628elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
8629{
8630 struct elf32_arm_link_hash_entry *eh;
8631 struct elf32_arm_relocs_copied *p;
8632
8633 if (h->root.type == bfd_link_hash_warning)
8634 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8635
8636 eh = (struct elf32_arm_link_hash_entry *) h;
8637 for (p = eh->relocs_copied; p != NULL; p = p->next)
8638 {
8639 asection *s = p->section;
8640
8641 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8642 {
8643 struct bfd_link_info *info = (struct bfd_link_info *) inf;
8644
8645 info->flags |= DF_TEXTREL;
8646
8647 /* Not an error, just cut short the traversal. */
8648 return FALSE;
8649 }
8650 }
8651 return TRUE;
8652}
8653
d504ffc8
DJ		 8654void
8655bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
8656 int byteswap_code)
8657{
8658 struct elf32_arm_link_hash_table *globals;
8659
8660 globals = elf32_arm_hash_table (info);
8661 globals->byteswap_code = byteswap_code;
8662}
8663
252b5132
RH		 8664/* Set the sizes of the dynamic sections. */
8665
b34976b6 8666static bfd_boolean
57e8b36a
NC		 8667elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
8668 struct bfd_link_info * info)
252b5132
RH		 8669{
8670 bfd * dynobj;
8671 asection * s;
b34976b6
AM		 8672 bfd_boolean plt;
8673 bfd_boolean relocs;
5e681ec4
PB		 8674 bfd *ibfd;
8675 struct elf32_arm_link_hash_table *htab;
252b5132 8676
5e681ec4 8677 htab = elf32_arm_hash_table (info);
252b5132
RH		 8678 dynobj = elf_hash_table (info)->dynobj;
8679 BFD_ASSERT (dynobj != NULL);
39b41c9c 8680 check_use_blx (htab);
252b5132
RH		 8681
8682 if (elf_hash_table (info)->dynamic_sections_created)
8683 {
8684 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 8685 if (info->executable)
252b5132
RH		 8686 {
8687 s = bfd_get_section_by_name (dynobj, ".interp");
8688 BFD_ASSERT (s != NULL);
eea6121a 8689 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 8690 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8691 }
8692 }
5e681ec4
PB		 8693
8694 /* Set up .got offsets for local syms, and space for local dynamic
8695 relocs. */
8696 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 8697 {
5e681ec4
PB		 8698 bfd_signed_vma *local_got;
8699 bfd_signed_vma *end_local_got;
8700 char *local_tls_type;
8701 bfd_size_type locsymcount;
8702 Elf_Internal_Shdr *symtab_hdr;
8703 asection *srel;
8704
0ffa91dd 8705 if (! is_arm_elf (ibfd))
5e681ec4
PB		 8706 continue;
8707
8708 for (s = ibfd->sections; s != NULL; s = s->next)
8709 {
8710 struct elf32_arm_relocs_copied *p;
8711
6edfbbad 8712 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
5e681ec4
PB		 8713 {
8714 if (!bfd_is_abs_section (p->section)
8715 && bfd_is_abs_section (p->section->output_section))
8716 {
8717 /* Input section has been discarded, either because
8718 it is a copy of a linkonce section or due to
8719 linker script /DISCARD/, so we'll be discarding
8720 the relocs too. */
8721 }
8722 else if (p->count != 0)
8723 {
8724 srel = elf_section_data (p->section)->sreloc;
00a97672 8725 srel->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB		 8726 if ((p->section->output_section->flags & SEC_READONLY) != 0)
8727 info->flags |= DF_TEXTREL;
8728 }
8729 }
8730 }
8731
8732 local_got = elf_local_got_refcounts (ibfd);
8733 if (!local_got)
8734 continue;
8735
0ffa91dd 8736 symtab_hdr = & elf_symtab_hdr (ibfd);
5e681ec4
PB		 8737 locsymcount = symtab_hdr->sh_info;
8738 end_local_got = local_got + locsymcount;
ba93b8ac 8739 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
5e681ec4
PB		 8740 s = htab->sgot;
8741 srel = htab->srelgot;
8742 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
8743 {
8744 if (*local_got > 0)
8745 {
eea6121a 8746 *local_got = s->size;
ba93b8ac
DJ		 8747 if (*local_tls_type & GOT_TLS_GD)
8748 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8749 s->size += 8;
8750 if (*local_tls_type & GOT_TLS_IE)
8751 s->size += 4;
8752 if (*local_tls_type == GOT_NORMAL)
8753 s->size += 4;
8754
8755 if (info->shared || *local_tls_type == GOT_TLS_GD)
00a97672 8756 srel->size += RELOC_SIZE (htab);
5e681ec4
PB		 8757 }
8758 else
8759 *local_got = (bfd_vma) -1;
8760 }
252b5132
RH		 8761 }
8762
ba93b8ac
DJ		 8763 if (htab->tls_ldm_got.refcount > 0)
8764 {
8765 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8766 for R_ARM_TLS_LDM32 relocations. */
8767 htab->tls_ldm_got.offset = htab->sgot->size;
8768 htab->sgot->size += 8;
8769 if (info->shared)
00a97672 8770 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 8771 }
8772 else
8773 htab->tls_ldm_got.offset = -1;
8774
5e681ec4
PB		 8775 /* Allocate global sym .plt and .got entries, and space for global
8776 sym dynamic relocs. */
57e8b36a 8777 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
252b5132 8778
d504ffc8
DJ		 8779 /* Here we rummage through the found bfds to collect glue information. */
8780 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
c7b8f16e 8781 {
0ffa91dd 8782 if (! is_arm_elf (ibfd))
e44a2c9c
AM		 8783 continue;
8784
c7b8f16e
JB		 8785 /* Initialise mapping tables for code/data. */
8786 bfd_elf32_arm_init_maps (ibfd);
8787
8788 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
8789 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
8790 /* xgettext:c-format */
8791 _bfd_error_handler (_("Errors encountered processing file %s"),
8792 ibfd->filename);
8793 }
d504ffc8 8794
252b5132
RH		 8795 /* The check_relocs and adjust_dynamic_symbol entry points have
8796 determined the sizes of the various dynamic sections. Allocate
8797 memory for them. */
b34976b6
AM		 8798 plt = FALSE;
8799 relocs = FALSE;
252b5132
RH		 8800 for (s = dynobj->sections; s != NULL; s = s->next)
8801 {
8802 const char * name;
252b5132
RH		 8803
8804 if ((s->flags & SEC_LINKER_CREATED) == 0)
8805 continue;
8806
8807 /* It's OK to base decisions on the section name, because none
8808 of the dynobj section names depend upon the input files. */
8809 name = bfd_get_section_name (dynobj, s);
8810
24a1ba0f 8811 if (strcmp (name, ".plt") == 0)
252b5132 8812 {
c456f082
AM		 8813 /* Remember whether there is a PLT. */
8814 plt = s->size != 0;
252b5132 8815 }
0112cd26 8816 else if (CONST_STRNEQ (name, ".rel"))
252b5132 8817 {
c456f082 8818 if (s->size != 0)
252b5132 8819 {
252b5132 8820 /* Remember whether there are any reloc sections other
00a97672
RS		 8821 than .rel(a).plt and .rela.plt.unloaded. */
8822 if (s != htab->srelplt && s != htab->srelplt2)
b34976b6 8823 relocs = TRUE;
252b5132
RH		 8824
8825 /* We use the reloc_count field as a counter if we need
8826 to copy relocs into the output file. */
8827 s->reloc_count = 0;
8828 }
8829 }
0112cd26 8830 else if (! CONST_STRNEQ (name, ".got")
c456f082 8831 && strcmp (name, ".dynbss") != 0)
252b5132
RH		 8832 {
8833 /* It's not one of our sections, so don't allocate space. */
8834 continue;
8835 }
8836
c456f082 8837 if (s->size == 0)
252b5132 8838 {
c456f082 8839 /* If we don't need this section, strip it from the
00a97672
RS		 8840 output file. This is mostly to handle .rel(a).bss and
8841 .rel(a).plt. We must create both sections in
c456f082
AM		 8842 create_dynamic_sections, because they must be created
8843 before the linker maps input sections to output
8844 sections. The linker does that before
8845 adjust_dynamic_symbol is called, and it is that
8846 function which decides whether anything needs to go
8847 into these sections. */
8423293d 8848 s->flags |= SEC_EXCLUDE;
252b5132
RH		 8849 continue;
8850 }
8851
c456f082
AM		 8852 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8853 continue;
8854
252b5132 8855 /* Allocate memory for the section contents. */
eea6121a 8856 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 8857 if (s->contents == NULL)
b34976b6 8858 return FALSE;
252b5132
RH		 8859 }
8860
8861 if (elf_hash_table (info)->dynamic_sections_created)
8862 {
8863 /* Add some entries to the .dynamic section. We fill in the
8864 values later, in elf32_arm_finish_dynamic_sections, but we
8865 must add the entries now so that we get the correct size for
8866 the .dynamic section. The DT_DEBUG entry is filled in by the
8867 dynamic linker and used by the debugger. */
dc810e39 8868#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8869 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8870
8532796c 8871 if (info->executable)
252b5132 8872 {
dc810e39 8873 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8874 return FALSE;
252b5132
RH		 8875 }
8876
8877 if (plt)
8878 {
dc810e39
AM		 8879 if ( !add_dynamic_entry (DT_PLTGOT, 0)
8880 || !add_dynamic_entry (DT_PLTRELSZ, 0)
00a97672
RS		 8881 || !add_dynamic_entry (DT_PLTREL,
8882 htab->use_rel ? DT_REL : DT_RELA)
dc810e39 8883 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 8884 return FALSE;
252b5132
RH		 8885 }
8886
8887 if (relocs)
8888 {
00a97672
RS		 8889 if (htab->use_rel)
8890 {
8891 if (!add_dynamic_entry (DT_REL, 0)
8892 || !add_dynamic_entry (DT_RELSZ, 0)
8893 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
8894 return FALSE;
8895 }
8896 else
8897 {
8898 if (!add_dynamic_entry (DT_RELA, 0)
8899 || !add_dynamic_entry (DT_RELASZ, 0)
8900 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8901 return FALSE;
8902 }
252b5132
RH		 8903 }
8904
08d1f311
DJ		 8905 /* If any dynamic relocs apply to a read-only section,
8906 then we need a DT_TEXTREL entry. */
8907 if ((info->flags & DF_TEXTREL) == 0)
8908 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
8909 (PTR) info);
8910
99e4ae17 8911 if ((info->flags & DF_TEXTREL) != 0)
252b5132 8912 {
dc810e39 8913 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8914 return FALSE;
252b5132 8915 }
7a2b07ff
NS		 8916 if (htab->vxworks_p
8917 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
8918 return FALSE;
252b5132 8919 }
8532796c 8920#undef add_dynamic_entry
252b5132 8921
b34976b6 8922 return TRUE;
252b5132
RH		 8923}
8924
252b5132
RH		 8925/* Finish up dynamic symbol handling. We set the contents of various
8926 dynamic sections here. */
8927
b34976b6 8928static bfd_boolean
57e8b36a
NC		 8929elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
8930 struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
252b5132
RH		 8931{
8932 bfd * dynobj;
e5a52504 8933 struct elf32_arm_link_hash_table *htab;
b7693d02 8934 struct elf32_arm_link_hash_entry *eh;
252b5132
RH		 8935
8936 dynobj = elf_hash_table (info)->dynobj;
e5a52504 8937 htab = elf32_arm_hash_table (info);
b7693d02 8938 eh = (struct elf32_arm_link_hash_entry *) h;
252b5132
RH		 8939
8940 if (h->plt.offset != (bfd_vma) -1)
8941 {
8942 asection * splt;
252b5132 8943 asection * srel;
e5a52504 8944 bfd_byte *loc;
24a1ba0f 8945 bfd_vma plt_index;
947216bf 8946 Elf_Internal_Rela rel;
252b5132
RH		 8947
8948 /* This symbol has an entry in the procedure linkage table. Set
8949 it up. */
8950
8951 BFD_ASSERT (h->dynindx != -1);
8952
8953 splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672 8954 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
e5a52504 8955 BFD_ASSERT (splt != NULL && srel != NULL);
252b5132 8956
e5a52504
MM		 8957 /* Fill in the entry in the procedure linkage table. */
8958 if (htab->symbian_p)
8959 {
52ab56c2
PB		 8960 put_arm_insn (htab, output_bfd,
8961 elf32_arm_symbian_plt_entry[0],
8962 splt->contents + h->plt.offset);
8963 bfd_put_32 (output_bfd,
8964 elf32_arm_symbian_plt_entry[1],
8965 splt->contents + h->plt.offset + 4);
e5a52504
MM		 8966
8967 /* Fill in the entry in the .rel.plt section. */
2a1b9a48
MM		 8968 rel.r_offset = (splt->output_section->vma
8969 + splt->output_offset
52ab56c2 8970 + h->plt.offset + 4);
e5a52504 8971 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
b7693d02
DJ		 8972
8973 /* Get the index in the procedure linkage table which
8974 corresponds to this symbol. This is the index of this symbol
8975 in all the symbols for which we are making plt entries. The
8976 first entry in the procedure linkage table is reserved. */
8977 plt_index = ((h->plt.offset - htab->plt_header_size)
8978 / htab->plt_entry_size);
e5a52504
MM		 8979 }
8980 else
8981 {
00a97672 8982 bfd_vma got_offset, got_address, plt_address;
e5a52504
MM		 8983 bfd_vma got_displacement;
8984 asection * sgot;
52ab56c2 8985 bfd_byte * ptr;
e5a52504
MM		 8986
8987 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
8988 BFD_ASSERT (sgot != NULL);
8989
b7693d02
DJ		 8990 /* Get the offset into the .got.plt table of the entry that
8991 corresponds to this function. */
8992 got_offset = eh->plt_got_offset;
8993
8994 /* Get the index in the procedure linkage table which
8995 corresponds to this symbol. This is the index of this symbol
8996 in all the symbols for which we are making plt entries. The
8997 first three entries in .got.plt are reserved; after that
8998 symbols appear in the same order as in .plt. */
8999 plt_index = (got_offset - 12) / 4;
e5a52504 9000
00a97672
RS		 9001 /* Calculate the address of the GOT entry. */
9002 got_address = (sgot->output_section->vma
9003 + sgot->output_offset
9004 + got_offset);
5e681ec4 9005
00a97672
RS		 9006 /* ...and the address of the PLT entry. */
9007 plt_address = (splt->output_section->vma
9008 + splt->output_offset
9009 + h->plt.offset);
5e681ec4 9010
52ab56c2 9011 ptr = htab->splt->contents + h->plt.offset;
00a97672
RS		 9012 if (htab->vxworks_p && info->shared)
9013 {
9014 unsigned int i;
9015 bfd_vma val;
9016
52ab56c2 9017 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS		 9018 {
9019 val = elf32_arm_vxworks_shared_plt_entry[i];
9020 if (i == 2)
9021 val |= got_address - sgot->output_section->vma;
9022 if (i == 5)
9023 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB		 9024 if (i == 2 || i == 5)
9025 bfd_put_32 (output_bfd, val, ptr);
9026 else
9027 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS		 9028 }
9029 }
9030 else if (htab->vxworks_p)
b7693d02 9031 {
00a97672
RS		 9032 unsigned int i;
9033 bfd_vma val;
9034
d3753b85 9035 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS		 9036 {
9037 val = elf32_arm_vxworks_exec_plt_entry[i];
9038 if (i == 2)
9039 val |= got_address;
9040 if (i == 4)
9041 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
9042 if (i == 5)
9043 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB		 9044 if (i == 2 || i == 5)
9045 bfd_put_32 (output_bfd, val, ptr);
9046 else
9047 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS		 9048 }
9049
9050 loc = (htab->srelplt2->contents
9051 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
9052
9053 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
9054 referencing the GOT for this PLT entry. */
9055 rel.r_offset = plt_address + 8;
9056 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9057 rel.r_addend = got_offset;
9058 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9059 loc += RELOC_SIZE (htab);
9060
9061 /* Create the R_ARM_ABS32 relocation referencing the
9062 beginning of the PLT for this GOT entry. */
9063 rel.r_offset = got_address;
9064 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
9065 rel.r_addend = 0;
9066 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
b7693d02 9067 }
00a97672
RS		 9068 else
9069 {
bd97cb95 9070 bfd_signed_vma thumb_refs;
00a97672
RS		 9071 /* Calculate the displacement between the PLT slot and the
9072 entry in the GOT. The eight-byte offset accounts for the
9073 value produced by adding to pc in the first instruction
9074 of the PLT stub. */
9075 got_displacement = got_address - (plt_address + 8);
b7693d02 9076
00a97672
RS		 9077 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
9078
bd97cb95
DJ		 9079 thumb_refs = eh->plt_thumb_refcount;
9080 if (!htab->use_blx)
9081 thumb_refs += eh->plt_maybe_thumb_refcount;
9082
9083 if (thumb_refs > 0)
00a97672 9084 {
52ab56c2
PB		 9085 put_thumb_insn (htab, output_bfd,
9086 elf32_arm_plt_thumb_stub[0], ptr - 4);
9087 put_thumb_insn (htab, output_bfd,
9088 elf32_arm_plt_thumb_stub[1], ptr - 2);
00a97672
RS		 9089 }
9090
52ab56c2
PB		 9091 put_arm_insn (htab, output_bfd,
9092 elf32_arm_plt_entry[0]
9093 | ((got_displacement & 0x0ff00000) >> 20),
9094 ptr + 0);
9095 put_arm_insn (htab, output_bfd,
9096 elf32_arm_plt_entry[1]
9097 | ((got_displacement & 0x000ff000) >> 12),
9098 ptr+ 4);
9099 put_arm_insn (htab, output_bfd,
9100 elf32_arm_plt_entry[2]
9101 | (got_displacement & 0x00000fff),
9102 ptr + 8);
5e681ec4 9103#ifdef FOUR_WORD_PLT
52ab56c2 9104 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
5e681ec4 9105#endif
00a97672 9106 }
252b5132 9107
e5a52504
MM		 9108 /* Fill in the entry in the global offset table. */
9109 bfd_put_32 (output_bfd,
9110 (splt->output_section->vma
9111 + splt->output_offset),
9112 sgot->contents + got_offset);
9113
00a97672
RS		 9114 /* Fill in the entry in the .rel(a).plt section. */
9115 rel.r_addend = 0;
9116 rel.r_offset = got_address;
e5a52504
MM		 9117 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
9118 }
57e8b36a 9119
00a97672
RS		 9120 loc = srel->contents + plt_index * RELOC_SIZE (htab);
9121 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132 9122
f5385ebf 9123 if (!h->def_regular)
252b5132
RH		 9124 {
9125 /* Mark the symbol as undefined, rather than as defined in
9126 the .plt section. Leave the value alone. */
9127 sym->st_shndx = SHN_UNDEF;
d982ba73
PB		 9128 /* If the symbol is weak, we do need to clear the value.
9129 Otherwise, the PLT entry would provide a definition for
9130 the symbol even if the symbol wasn't defined anywhere,
9131 and so the symbol would never be NULL. */
f5385ebf 9132 if (!h->ref_regular_nonweak)
d982ba73 9133 sym->st_value = 0;
252b5132
RH		 9134 }
9135 }
9136
ba93b8ac
DJ		 9137 if (h->got.offset != (bfd_vma) -1
9138 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
9139 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
252b5132
RH		 9140 {
9141 asection * sgot;
9142 asection * srel;
947216bf
AM		 9143 Elf_Internal_Rela rel;
9144 bfd_byte *loc;
00a97672 9145 bfd_vma offset;
252b5132
RH		 9146
9147 /* This symbol has an entry in the global offset table. Set it
9148 up. */
252b5132 9149 sgot = bfd_get_section_by_name (dynobj, ".got");
00a97672 9150 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
252b5132
RH		 9151 BFD_ASSERT (sgot != NULL && srel != NULL);
9152
00a97672
RS		 9153 offset = (h->got.offset & ~(bfd_vma) 1);
9154 rel.r_addend = 0;
252b5132
RH		 9155 rel.r_offset = (sgot->output_section->vma
9156 + sgot->output_offset
00a97672 9157 + offset);
252b5132 9158
5e681ec4
PB		 9159 /* If this is a static link, or it is a -Bsymbolic link and the
9160 symbol is defined locally or was forced to be local because
9161 of a version file, we just want to emit a RELATIVE reloc.
9162 The entry in the global offset table will already have been
9163 initialized in the relocate_section function. */
252b5132 9164 if (info->shared
5e681ec4
PB		 9165 && SYMBOL_REFERENCES_LOCAL (info, h))
9166 {
9167 BFD_ASSERT((h->got.offset & 1) != 0);
9168 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
00a97672
RS		 9169 if (!htab->use_rel)
9170 {
9171 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
9172 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
9173 }
5e681ec4 9174 }
252b5132
RH		 9175 else
9176 {
5e681ec4 9177 BFD_ASSERT((h->got.offset & 1) == 0);
00a97672 9178 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
252b5132
RH		 9179 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
9180 }
9181
00a97672
RS		 9182 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
9183 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH		 9184 }
9185
f5385ebf 9186 if (h->needs_copy)
252b5132
RH		 9187 {
9188 asection * s;
947216bf
AM		 9189 Elf_Internal_Rela rel;
9190 bfd_byte *loc;
252b5132
RH		 9191
9192 /* This symbol needs a copy reloc. Set it up. */
252b5132
RH		 9193 BFD_ASSERT (h->dynindx != -1
9194 && (h->root.type == bfd_link_hash_defined
9195 || h->root.type == bfd_link_hash_defweak));
9196
9197 s = bfd_get_section_by_name (h->root.u.def.section->owner,
00a97672 9198 RELOC_SECTION (htab, ".bss"));
252b5132
RH		 9199 BFD_ASSERT (s != NULL);
9200
00a97672 9201 rel.r_addend = 0;
252b5132
RH		 9202 rel.r_offset = (h->root.u.def.value
9203 + h->root.u.def.section->output_section->vma
9204 + h->root.u.def.section->output_offset);
9205 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
00a97672
RS		 9206 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
9207 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH		 9208 }
9209
00a97672
RS		 9210 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9211 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9212 to the ".got" section. */
252b5132 9213 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
00a97672 9214 || (!htab->vxworks_p && h == htab->root.hgot))
252b5132
RH		 9215 sym->st_shndx = SHN_ABS;
9216
b34976b6 9217 return TRUE;
252b5132
RH		 9218}
9219
9220/* Finish up the dynamic sections. */
9221
b34976b6 9222static bfd_boolean
57e8b36a 9223elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
252b5132
RH		 9224{
9225 bfd * dynobj;
9226 asection * sgot;
9227 asection * sdyn;
9228
9229 dynobj = elf_hash_table (info)->dynobj;
9230
9231 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
229fcec5 9232 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
252b5132
RH		 9233 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9234
9235 if (elf_hash_table (info)->dynamic_sections_created)
9236 {
9237 asection *splt;
9238 Elf32_External_Dyn *dyncon, *dynconend;
229fcec5 9239 struct elf32_arm_link_hash_table *htab;
252b5132 9240
229fcec5 9241 htab = elf32_arm_hash_table (info);
252b5132 9242 splt = bfd_get_section_by_name (dynobj, ".plt");
24a1ba0f 9243 BFD_ASSERT (splt != NULL && sdyn != NULL);
252b5132
RH		 9244
9245 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 9246 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9b485d32 9247
252b5132
RH		 9248 for (; dyncon < dynconend; dyncon++)
9249 {
9250 Elf_Internal_Dyn dyn;
9251 const char * name;
9252 asection * s;
9253
9254 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9255
9256 switch (dyn.d_tag)
9257 {
229fcec5
MM		 9258 unsigned int type;
9259
252b5132 9260 default:
7a2b07ff
NS		 9261 if (htab->vxworks_p
9262 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9263 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 9264 break;
9265
229fcec5
MM		 9266 case DT_HASH:
9267 name = ".hash";
9268 goto get_vma_if_bpabi;
9269 case DT_STRTAB:
9270 name = ".dynstr";
9271 goto get_vma_if_bpabi;
9272 case DT_SYMTAB:
9273 name = ".dynsym";
9274 goto get_vma_if_bpabi;
c0042f5d
MM		 9275 case DT_VERSYM:
9276 name = ".gnu.version";
9277 goto get_vma_if_bpabi;
9278 case DT_VERDEF:
9279 name = ".gnu.version_d";
9280 goto get_vma_if_bpabi;
9281 case DT_VERNEED:
9282 name = ".gnu.version_r";
9283 goto get_vma_if_bpabi;
9284
252b5132
RH		 9285 case DT_PLTGOT:
9286 name = ".got";
9287 goto get_vma;
9288 case DT_JMPREL:
00a97672 9289 name = RELOC_SECTION (htab, ".plt");
252b5132
RH		 9290 get_vma:
9291 s = bfd_get_section_by_name (output_bfd, name);
9292 BFD_ASSERT (s != NULL);
229fcec5
MM		 9293 if (!htab->symbian_p)
9294 dyn.d_un.d_ptr = s->vma;
9295 else
9296 /* In the BPABI, tags in the PT_DYNAMIC section point
9297 at the file offset, not the memory address, for the
9298 convenience of the post linker. */
9299 dyn.d_un.d_ptr = s->filepos;
252b5132
RH		 9300 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9301 break;
9302
229fcec5
MM		 9303 get_vma_if_bpabi:
9304 if (htab->symbian_p)
9305 goto get_vma;
9306 break;
9307
252b5132 9308 case DT_PLTRELSZ:
00a97672
RS		 9309 s = bfd_get_section_by_name (output_bfd,
9310 RELOC_SECTION (htab, ".plt"));
252b5132 9311 BFD_ASSERT (s != NULL);
eea6121a 9312 dyn.d_un.d_val = s->size;
252b5132
RH		 9313 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9314 break;
229fcec5 9315
252b5132 9316 case DT_RELSZ:
00a97672 9317 case DT_RELASZ:
229fcec5
MM		 9318 if (!htab->symbian_p)
9319 {
9320 /* My reading of the SVR4 ABI indicates that the
9321 procedure linkage table relocs (DT_JMPREL) should be
9322 included in the overall relocs (DT_REL). This is
9323 what Solaris does. However, UnixWare can not handle
9324 that case. Therefore, we override the DT_RELSZ entry
9325 here to make it not include the JMPREL relocs. Since
00a97672 9326 the linker script arranges for .rel(a).plt to follow all
229fcec5
MM		 9327 other relocation sections, we don't have to worry
9328 about changing the DT_REL entry. */
00a97672
RS		 9329 s = bfd_get_section_by_name (output_bfd,
9330 RELOC_SECTION (htab, ".plt"));
229fcec5
MM		 9331 if (s != NULL)
9332 dyn.d_un.d_val -= s->size;
9333 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9334 break;
9335 }
9336 /* Fall through */
9337
9338 case DT_REL:
9339 case DT_RELA:
229fcec5
MM		 9340 /* In the BPABI, the DT_REL tag must point at the file
9341 offset, not the VMA, of the first relocation
9342 section. So, we use code similar to that in
9343 elflink.c, but do not check for SHF_ALLOC on the
9344 relcoation section, since relocations sections are
9345 never allocated under the BPABI. The comments above
9346 about Unixware notwithstanding, we include all of the
9347 relocations here. */
9348 if (htab->symbian_p)
9349 {
9350 unsigned int i;
9351 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
9352 ? SHT_REL : SHT_RELA);
9353 dyn.d_un.d_val = 0;
9354 for (i = 1; i < elf_numsections (output_bfd); i++)
9355 {
9356 Elf_Internal_Shdr *hdr
9357 = elf_elfsections (output_bfd)[i];
9358 if (hdr->sh_type == type)
9359 {
9360 if (dyn.d_tag == DT_RELSZ
9361 || dyn.d_tag == DT_RELASZ)
9362 dyn.d_un.d_val += hdr->sh_size;
de52dba4
AM		 9363 else if ((ufile_ptr) hdr->sh_offset
9364 <= dyn.d_un.d_val - 1)
229fcec5
MM		 9365 dyn.d_un.d_val = hdr->sh_offset;
9366 }
9367 }
9368 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9369 }
252b5132 9370 break;
88f7bcd5
NC		 9371
9372 /* Set the bottom bit of DT_INIT/FINI if the
9373 corresponding function is Thumb. */
9374 case DT_INIT:
9375 name = info->init_function;
9376 goto get_sym;
9377 case DT_FINI:
9378 name = info->fini_function;
9379 get_sym:
9380 /* If it wasn't set by elf_bfd_final_link
4cc11e76 9381 then there is nothing to adjust. */
88f7bcd5
NC		 9382 if (dyn.d_un.d_val != 0)
9383 {
9384 struct elf_link_hash_entry * eh;
9385
9386 eh = elf_link_hash_lookup (elf_hash_table (info), name,
b34976b6 9387 FALSE, FALSE, TRUE);
88f7bcd5
NC		 9388 if (eh != (struct elf_link_hash_entry *) NULL
9389 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
9390 {
9391 dyn.d_un.d_val |= 1;
b34976b6 9392 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
88f7bcd5
NC		 9393 }
9394 }
9395 break;
252b5132
RH		 9396 }
9397 }
9398
24a1ba0f 9399 /* Fill in the first entry in the procedure linkage table. */
e5a52504 9400 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
f7a74f8c 9401 {
00a97672
RS		 9402 const bfd_vma *plt0_entry;
9403 bfd_vma got_address, plt_address, got_displacement;
9404
9405 /* Calculate the addresses of the GOT and PLT. */
9406 got_address = sgot->output_section->vma + sgot->output_offset;
9407 plt_address = splt->output_section->vma + splt->output_offset;
9408
9409 if (htab->vxworks_p)
9410 {
9411 /* The VxWorks GOT is relocated by the dynamic linker.
9412 Therefore, we must emit relocations rather than simply
9413 computing the values now. */
9414 Elf_Internal_Rela rel;
9415
9416 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
52ab56c2
PB		 9417 put_arm_insn (htab, output_bfd, plt0_entry[0],
9418 splt->contents + 0);
9419 put_arm_insn (htab, output_bfd, plt0_entry[1],
9420 splt->contents + 4);
9421 put_arm_insn (htab, output_bfd, plt0_entry[2],
9422 splt->contents + 8);
00a97672
RS		 9423 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
9424
9425 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9426 rel.r_offset = plt_address + 12;
9427 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9428 rel.r_addend = 0;
9429 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
9430 htab->srelplt2->contents);
9431 }
9432 else
9433 {
9434 got_displacement = got_address - (plt_address + 16);
9435
9436 plt0_entry = elf32_arm_plt0_entry;
52ab56c2
PB		 9437 put_arm_insn (htab, output_bfd, plt0_entry[0],
9438 splt->contents + 0);
9439 put_arm_insn (htab, output_bfd, plt0_entry[1],
9440 splt->contents + 4);
9441 put_arm_insn (htab, output_bfd, plt0_entry[2],
9442 splt->contents + 8);
9443 put_arm_insn (htab, output_bfd, plt0_entry[3],
9444 splt->contents + 12);
5e681ec4 9445
5e681ec4 9446#ifdef FOUR_WORD_PLT
00a97672
RS		 9447 /* The displacement value goes in the otherwise-unused
9448 last word of the second entry. */
9449 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
5e681ec4 9450#else
00a97672 9451 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
5e681ec4 9452#endif
00a97672 9453 }
f7a74f8c 9454 }
252b5132
RH		 9455
9456 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9457 really seem like the right value. */
74541ad4
AM		 9458 if (splt->output_section->owner == output_bfd)
9459 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
00a97672
RS		 9460
9461 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
9462 {
9463 /* Correct the .rel(a).plt.unloaded relocations. They will have
9464 incorrect symbol indexes. */
9465 int num_plts;
eed62c48 9466 unsigned char *p;
00a97672
RS		 9467
9468 num_plts = ((htab->splt->size - htab->plt_header_size)
9469 / htab->plt_entry_size);
9470 p = htab->srelplt2->contents + RELOC_SIZE (htab);
9471
9472 for (; num_plts; num_plts--)
9473 {
9474 Elf_Internal_Rela rel;
9475
9476 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9477 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9478 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9479 p += RELOC_SIZE (htab);
9480
9481 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9482 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
9483 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9484 p += RELOC_SIZE (htab);
9485 }
9486 }
252b5132
RH		 9487 }
9488
9489 /* Fill in the first three entries in the global offset table. */
229fcec5 9490 if (sgot)
252b5132 9491 {
229fcec5
MM		 9492 if (sgot->size > 0)
9493 {
9494 if (sdyn == NULL)
9495 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
9496 else
9497 bfd_put_32 (output_bfd,
9498 sdyn->output_section->vma + sdyn->output_offset,
9499 sgot->contents);
9500 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
9501 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
9502 }
252b5132 9503
229fcec5
MM		 9504 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
9505 }
252b5132 9506
b34976b6 9507 return TRUE;
252b5132
RH		 9508}
9509
ba96a88f 9510static void
57e8b36a 9511elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
ba96a88f 9512{
9b485d32 9513 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
e489d0ae 9514 struct elf32_arm_link_hash_table *globals;
ba96a88f
NC		 9515
9516 i_ehdrp = elf_elfheader (abfd);
9517
94a3258f
PB		 9518 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
9519 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
9520 else
9521 i_ehdrp->e_ident[EI_OSABI] = 0;
ba96a88f 9522 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
e489d0ae 9523
93204d3a
PB		 9524 if (link_info)
9525 {
9526 globals = elf32_arm_hash_table (link_info);
9527 if (globals->byteswap_code)
9528 i_ehdrp->e_flags |= EF_ARM_BE8;
9529 }
ba96a88f
NC		 9530}
9531
99e4ae17 9532static enum elf_reloc_type_class
57e8b36a 9533elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
99e4ae17 9534{
f51e552e 9535 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ		 9536 {
9537 case R_ARM_RELATIVE:
9538 return reloc_class_relative;
9539 case R_ARM_JUMP_SLOT:
9540 return reloc_class_plt;
9541 case R_ARM_COPY:
9542 return reloc_class_copy;
9543 default:
9544 return reloc_class_normal;
9545 }
9546}
9547
e16bb312
NC		 9548/* Set the right machine number for an Arm ELF file. */
9549
9550static bfd_boolean
57e8b36a 9551elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
e16bb312
NC		 9552{
9553 if (hdr->sh_type == SHT_NOTE)
9554 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
9555
9556 return TRUE;
9557}
9558
e489d0ae 9559static void
57e8b36a 9560elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
e16bb312 9561{
5a6c6817 9562 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
e16bb312
NC		 9563}
9564
40a18ebd
NC		 9565/* Return TRUE if this is an unwinding table entry. */
9566
9567static bfd_boolean
9568is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
9569{
0112cd26
NC		 9570 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
9571 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
40a18ebd
NC		 9572}
9573
9574
9575/* Set the type and flags for an ARM section. We do this by
9576 the section name, which is a hack, but ought to work. */
9577
9578static bfd_boolean
9579elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
9580{
9581 const char * name;
9582
9583 name = bfd_get_section_name (abfd, sec);
9584
9585 if (is_arm_elf_unwind_section_name (abfd, name))
9586 {
9587 hdr->sh_type = SHT_ARM_EXIDX;
9588 hdr->sh_flags |= SHF_LINK_ORDER;
9589 }
9590 return TRUE;
9591}
9592
6dc132d9
L		 9593/* Handle an ARM specific section when reading an object file. This is
9594 called when bfd_section_from_shdr finds a section with an unknown
9595 type. */
40a18ebd
NC		 9596
9597static bfd_boolean
9598elf32_arm_section_from_shdr (bfd *abfd,
9599 Elf_Internal_Shdr * hdr,
6dc132d9
L		 9600 const char *name,
9601 int shindex)
40a18ebd
NC		 9602{
9603 /* There ought to be a place to keep ELF backend specific flags, but
9604 at the moment there isn't one. We just keep track of the
9605 sections by their name, instead. Fortunately, the ABI gives
9606 names for all the ARM specific sections, so we will probably get
9607 away with this. */
9608 switch (hdr->sh_type)
9609 {
9610 case SHT_ARM_EXIDX:
0951f019
RE		 9611 case SHT_ARM_PREEMPTMAP:
9612 case SHT_ARM_ATTRIBUTES:
40a18ebd
NC		 9613 break;
9614
9615 default:
9616 return FALSE;
9617 }
9618
6dc132d9 9619 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
40a18ebd
NC		 9620 return FALSE;
9621
9622 return TRUE;
9623}
e489d0ae 9624
8e3de13a
NC		 9625/* A structure used to record a list of sections, independently
9626 of the next and prev fields in the asection structure. */
9627typedef struct section_list
9628{
9629 asection * sec;
9630 struct section_list * next;
9631 struct section_list * prev;
9632}
9633section_list;
9634
9635/* Unfortunately we need to keep a list of sections for which
9636 an _arm_elf_section_data structure has been allocated. This
9637 is because it is possible for functions like elf32_arm_write_section
9638 to be called on a section which has had an elf_data_structure
9639 allocated for it (and so the used_by_bfd field is valid) but
9640 for which the ARM extended version of this structure - the
9641 _arm_elf_section_data structure - has not been allocated. */
9642static section_list * sections_with_arm_elf_section_data = NULL;
9643
9644static void
957c6e41 9645record_section_with_arm_elf_section_data (asection * sec)
8e3de13a
NC		 9646{
9647 struct section_list * entry;
9648
957c6e41 9649 entry = bfd_malloc (sizeof (* entry));
8e3de13a
NC		 9650 if (entry == NULL)
9651 return;
9652 entry->sec = sec;
9653 entry->next = sections_with_arm_elf_section_data;
9654 entry->prev = NULL;
9655 if (entry->next != NULL)
9656 entry->next->prev = entry;
9657 sections_with_arm_elf_section_data = entry;
9658}
9659
44444f50
NC		 9660static struct section_list *
9661find_arm_elf_section_entry (asection * sec)
8e3de13a
NC		 9662{
9663 struct section_list * entry;
bd4aae00 9664 static struct section_list * last_entry = NULL;
8e3de13a 9665
bd4aae00
NC		 9666 /* This is a short cut for the typical case where the sections are added
9667 to the sections_with_arm_elf_section_data list in forward order and
9668 then looked up here in backwards order. This makes a real difference
9669 to the ld-srec/sec64k.exp linker test. */
44444f50 9670 entry = sections_with_arm_elf_section_data;
bd4aae00
NC		 9671 if (last_entry != NULL)
9672 {
9673 if (last_entry->sec == sec)
44444f50
NC		 9674 entry = last_entry;
9675 else if (last_entry->next != NULL
9676 && last_entry->next->sec == sec)
9677 entry = last_entry->next;
bd4aae00 9678 }
44444f50
NC		 9679
9680 for (; entry; entry = entry->next)
8e3de13a 9681 if (entry->sec == sec)
44444f50 9682 break;
bd4aae00 9683
44444f50
NC		 9684 if (entry)
9685 /* Record the entry prior to this one - it is the entry we are most
9686 likely to want to locate next time. Also this way if we have been
9687 called from unrecord_section_with_arm_elf_section_data() we will not
9688 be caching a pointer that is about to be freed. */
9689 last_entry = entry->prev;
9690
9691 return entry;
9692}
9693
9694static _arm_elf_section_data *
9695get_arm_elf_section_data (asection * sec)
9696{
9697 struct section_list * entry;
9698
9699 entry = find_arm_elf_section_entry (sec);
9700
9701 if (entry)
9702 return elf32_arm_section_data (entry->sec);
9703 else
9704 return NULL;
8e3de13a
NC		 9705}
9706
9707static void
9708unrecord_section_with_arm_elf_section_data (asection * sec)
9709{
9710 struct section_list * entry;
9711
44444f50
NC		 9712 entry = find_arm_elf_section_entry (sec);
9713
9714 if (entry)
9715 {
9716 if (entry->prev != NULL)
9717 entry->prev->next = entry->next;
9718 if (entry->next != NULL)
9719 entry->next->prev = entry->prev;
9720 if (entry == sections_with_arm_elf_section_data)
9721 sections_with_arm_elf_section_data = entry->next;
9722 free (entry);
9723 }
8e3de13a
NC		 9724}
9725
e489d0ae 9726
4e617b1e
PB		 9727typedef struct
9728{
9729 void *finfo;
9730 struct bfd_link_info *info;
91a5743d
PB		 9731 asection *sec;
9732 int sec_shndx;
4e617b1e
PB		 9733 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
9734 asection *, struct elf_link_hash_entry *);
9735} output_arch_syminfo;
9736
9737enum map_symbol_type
9738{
9739 ARM_MAP_ARM,
9740 ARM_MAP_THUMB,
9741 ARM_MAP_DATA
9742};
9743
9744
9745/* Output a single PLT mapping symbol. */
9746
9747static bfd_boolean
9748elf32_arm_ouput_plt_map_sym (output_arch_syminfo *osi,
9749 enum map_symbol_type type,
9750 bfd_vma offset)
9751{
9752 static const char *names[3] = {"$a", "$t", "$d"};
9753 struct elf32_arm_link_hash_table *htab;
9754 Elf_Internal_Sym sym;
9755
9756 htab = elf32_arm_hash_table (osi->info);
91a5743d
PB		 9757 sym.st_value = osi->sec->output_section->vma
9758 + osi->sec->output_offset
9759 + offset;
4e617b1e
PB		 9760 sym.st_size = 0;
9761 sym.st_other = 0;
9762 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
91a5743d
PB		 9763 sym.st_shndx = osi->sec_shndx;
9764 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
4e617b1e
PB		 9765 return FALSE;
9766 return TRUE;
9767}
9768
9769
9770/* Output mapping symbols for PLT entries associated with H. */
9771
9772static bfd_boolean
9773elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
9774{
9775 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
9776 struct elf32_arm_link_hash_table *htab;
9777 struct elf32_arm_link_hash_entry *eh;
9778 bfd_vma addr;
9779
9780 htab = elf32_arm_hash_table (osi->info);
9781
9782 if (h->root.type == bfd_link_hash_indirect)
9783 return TRUE;
9784
9785 if (h->root.type == bfd_link_hash_warning)
9786 /* When warning symbols are created, they **replace** the "real"
9787 entry in the hash table, thus we never get to see the real
9788 symbol in a hash traversal. So look at it now. */
9789 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9790
9791 if (h->plt.offset == (bfd_vma) -1)
9792 return TRUE;
9793
9794 eh = (struct elf32_arm_link_hash_entry *) h;
9795 addr = h->plt.offset;
9796 if (htab->symbian_p)
9797 {
9798 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9799 return FALSE;
9800 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 4))
9801 return FALSE;
9802 }
9803 else if (htab->vxworks_p)
9804 {
9805 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9806 return FALSE;
9807 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 8))
9808 return FALSE;
9809 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr + 12))
9810 return FALSE;
9811 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 20))
9812 return FALSE;
9813 }
9814 else
9815 {
bd97cb95
DJ		 9816 bfd_signed_vma thumb_refs;
9817
9818 thumb_refs = eh->plt_thumb_refcount;
9819 if (!htab->use_blx)
9820 thumb_refs += eh->plt_maybe_thumb_refcount;
4e617b1e 9821
bd97cb95 9822 if (thumb_refs > 0)
4e617b1e
PB		 9823 {
9824 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_THUMB, addr - 4))
9825 return FALSE;
9826 }
9827#ifdef FOUR_WORD_PLT
9828 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9829 return FALSE;
9830 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 12))
9831 return FALSE;
9832#else
9833 /* A three-word PLT with no Thumb thunk contains only Arm code,
9834 so only need to output a mapping symbol for the first PLT entry and
9835 entries with thumb thunks. */
bd97cb95 9836 if (thumb_refs > 0 || addr == 20)
4e617b1e
PB		 9837 {
9838 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9839 return FALSE;
9840 }
9841#endif
9842 }
9843
9844 return TRUE;
9845}
9846
9847
91a5743d 9848/* Output mapping symbols for linker generated sections. */
4e617b1e
PB		 9849
9850static bfd_boolean
9851elf32_arm_output_arch_local_syms (bfd *output_bfd,
9852 struct bfd_link_info *info,
9853 void *finfo, bfd_boolean (*func) (void *, const char *,
9854 Elf_Internal_Sym *,
9855 asection *,
9856 struct elf_link_hash_entry *))
9857{
9858 output_arch_syminfo osi;
9859 struct elf32_arm_link_hash_table *htab;
91a5743d
PB		 9860 bfd_vma offset;
9861 bfd_size_type size;
4e617b1e
PB		 9862
9863 htab = elf32_arm_hash_table (info);
4e617b1e 9864 check_use_blx(htab);
91a5743d 9865
4e617b1e
PB		 9866 osi.finfo = finfo;
9867 osi.info = info;
9868 osi.func = func;
91a5743d
PB		 9869
9870 /* ARM->Thumb glue. */
9871 if (htab->arm_glue_size > 0)
9872 {
9873 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9874 ARM2THUMB_GLUE_SECTION_NAME);
9875
9876 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9877 (output_bfd, osi.sec->output_section);
9878 if (info->shared || htab->root.is_relocatable_executable
9879 || htab->pic_veneer)
9880 size = ARM2THUMB_PIC_GLUE_SIZE;
9881 else if (htab->use_blx)
9882 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
9883 else
9884 size = ARM2THUMB_STATIC_GLUE_SIZE;
4e617b1e 9885
91a5743d
PB		 9886 for (offset = 0; offset < htab->arm_glue_size; offset += size)
9887 {
9888 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset);
9889 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
9890 }
9891 }
9892
9893 /* Thumb->ARM glue. */
9894 if (htab->thumb_glue_size > 0)
9895 {
9896 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9897 THUMB2ARM_GLUE_SECTION_NAME);
9898
9899 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9900 (output_bfd, osi.sec->output_section);
9901 size = THUMB2ARM_GLUE_SIZE;
9902
9903 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
9904 {
9905 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_THUMB, offset);
9906 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset + 4);
9907 }
9908 }
9909
845b51d6
PB		 9910 /* ARMv4 BX veneers. */
9911 if (htab->bx_glue_size > 0)
9912 {
9913 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9914 ARM_BX_GLUE_SECTION_NAME);
9915
9916 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9917 (output_bfd, osi.sec->output_section);
9918
9919 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0);
9920 }
9921
91a5743d
PB		 9922 /* Finally, output mapping symbols for the PLT. */
9923 if (!htab->splt || htab->splt->size == 0)
9924 return TRUE;
9925
9926 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
9927 htab->splt->output_section);
9928 osi.sec = htab->splt;
4e617b1e
PB		 9929 /* Output mapping symbols for the plt header. SymbianOS does not have a
9930 plt header. */
9931 if (htab->vxworks_p)
9932 {
9933 /* VxWorks shared libraries have no PLT header. */
9934 if (!info->shared)
9935 {
9936 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9937 return FALSE;
9938 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 12))
9939 return FALSE;
9940 }
9941 }
9942 else if (!htab->symbian_p)
9943 {
9944 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9945 return FALSE;
9946#ifndef FOUR_WORD_PLT
9947 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 16))
9948 return FALSE;
9949#endif
9950 }
9951
9952 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
9953 return TRUE;
9954}
9955
e489d0ae
PB		 9956/* Allocate target specific section data. */
9957
9958static bfd_boolean
9959elf32_arm_new_section_hook (bfd *abfd, asection *sec)
9960{
f592407e
AM		 9961 if (!sec->used_by_bfd)
9962 {
9963 _arm_elf_section_data *sdata;
9964 bfd_size_type amt = sizeof (*sdata);
e489d0ae 9965
f592407e
AM		 9966 sdata = bfd_zalloc (abfd, amt);
9967 if (sdata == NULL)
9968 return FALSE;
9969 sec->used_by_bfd = sdata;
9970 }
e489d0ae 9971
957c6e41 9972 record_section_with_arm_elf_section_data (sec);
8e3de13a 9973
e489d0ae
PB		 9974 return _bfd_elf_new_section_hook (abfd, sec);
9975}
9976
9977
9978/* Used to order a list of mapping symbols by address. */
9979
9980static int
9981elf32_arm_compare_mapping (const void * a, const void * b)
9982{
7f6a71ff
JM		 9983 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
9984 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
9985
9986 if (amap->vma > bmap->vma)
9987 return 1;
9988 else if (amap->vma < bmap->vma)
9989 return -1;
9990 else if (amap->type > bmap->type)
9991 /* Ensure results do not depend on the host qsort for objects with
9992 multiple mapping symbols at the same address by sorting on type
9993 after vma. */
9994 return 1;
9995 else if (amap->type < bmap->type)
9996 return -1;
9997 else
9998 return 0;
e489d0ae
PB		 9999}
10000
10001
10002/* Do code byteswapping. Return FALSE afterwards so that the section is
10003 written out as normal. */
10004
10005static bfd_boolean
c7b8f16e
JB		 10006elf32_arm_write_section (bfd *output_bfd,
10007 struct bfd_link_info *link_info, asection *sec,
e489d0ae
PB		 10008 bfd_byte *contents)
10009{
c7b8f16e 10010 int mapcount, errcount;
8e3de13a 10011 _arm_elf_section_data *arm_data;
c7b8f16e 10012 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
e489d0ae 10013 elf32_arm_section_map *map;
c7b8f16e 10014 elf32_vfp11_erratum_list *errnode;
e489d0ae
PB		 10015 bfd_vma ptr;
10016 bfd_vma end;
c7b8f16e 10017 bfd_vma offset = sec->output_section->vma + sec->output_offset;
e489d0ae
PB		 10018 bfd_byte tmp;
10019 int i;
57e8b36a 10020
8e3de13a
NC		 10021 /* If this section has not been allocated an _arm_elf_section_data
10022 structure then we cannot record anything. */
10023 arm_data = get_arm_elf_section_data (sec);
10024 if (arm_data == NULL)
10025 return FALSE;
10026
10027 mapcount = arm_data->mapcount;
10028 map = arm_data->map;
c7b8f16e
JB		 10029 errcount = arm_data->erratumcount;
10030
10031 if (errcount != 0)
10032 {
10033 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
10034
10035 for (errnode = arm_data->erratumlist; errnode != 0;
10036 errnode = errnode->next)
10037 {
10038 bfd_vma index = errnode->vma - offset;
10039
10040 switch (errnode->type)
10041 {
10042 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
10043 {
10044 bfd_vma branch_to_veneer;
10045 /* Original condition code of instruction, plus bit mask for
10046 ARM B instruction. */
10047 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
10048 | 0x0a000000;
10049
10050 /* The instruction is before the label. */
10051 index -= 4;
10052
10053 /* Above offset included in -4 below. */
10054 branch_to_veneer = errnode->u.b.veneer->vma
10055 - errnode->vma - 4;
10056
10057 if ((signed) branch_to_veneer < -(1 << 25)
10058 || (signed) branch_to_veneer >= (1 << 25))
10059 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
10060 "range"), output_bfd);
10061
10062 insn |= (branch_to_veneer >> 2) & 0xffffff;
10063 contents[endianflip ^ index] = insn & 0xff;
10064 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
10065 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
10066 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
10067 }
10068 break;
10069
10070 case VFP11_ERRATUM_ARM_VENEER:
10071 {
10072 bfd_vma branch_from_veneer;
10073 unsigned int insn;
10074
10075 /* Take size of veneer into account. */
10076 branch_from_veneer = errnode->u.v.branch->vma
10077 - errnode->vma - 12;
10078
10079 if ((signed) branch_from_veneer < -(1 << 25)
10080 || (signed) branch_from_veneer >= (1 << 25))
10081 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
10082 "range"), output_bfd);
10083
10084 /* Original instruction. */
10085 insn = errnode->u.v.branch->u.b.vfp_insn;
10086 contents[endianflip ^ index] = insn & 0xff;
10087 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
10088 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
10089 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
10090
10091 /* Branch back to insn after original insn. */
10092 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
10093 contents[endianflip ^ (index + 4)] = insn & 0xff;
10094 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
10095 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
10096 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
10097 }
10098 break;
10099
10100 default:
10101 abort ();
10102 }
10103 }
10104 }
e489d0ae
PB		 10105
10106 if (mapcount == 0)
10107 return FALSE;
10108
c7b8f16e 10109 if (globals->byteswap_code)
e489d0ae 10110 {
c7b8f16e 10111 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
57e8b36a 10112
c7b8f16e
JB		 10113 ptr = map[0].vma;
10114 for (i = 0; i < mapcount; i++)
10115 {
10116 if (i == mapcount - 1)
10117 end = sec->size;
10118 else
10119 end = map[i + 1].vma;
e489d0ae 10120
c7b8f16e 10121 switch (map[i].type)
e489d0ae 10122 {
c7b8f16e
JB		 10123 case 'a':
10124 /* Byte swap code words. */
10125 while (ptr + 3 < end)
10126 {
10127 tmp = contents[ptr];
10128 contents[ptr] = contents[ptr + 3];
10129 contents[ptr + 3] = tmp;
10130 tmp = contents[ptr + 1];
10131 contents[ptr + 1] = contents[ptr + 2];
10132 contents[ptr + 2] = tmp;
10133 ptr += 4;
10134 }
10135 break;
e489d0ae 10136
c7b8f16e
JB		 10137 case 't':
10138 /* Byte swap code halfwords. */
10139 while (ptr + 1 < end)
10140 {
10141 tmp = contents[ptr];
10142 contents[ptr] = contents[ptr + 1];
10143 contents[ptr + 1] = tmp;
10144 ptr += 2;
10145 }
10146 break;
10147
10148 case 'd':
10149 /* Leave data alone. */
10150 break;
10151 }
10152 ptr = end;
10153 }
e489d0ae 10154 }
8e3de13a 10155
93204d3a 10156 free (map);
8e3de13a 10157 arm_data->mapcount = 0;
c7b8f16e 10158 arm_data->mapsize = 0;
8e3de13a
NC		 10159 arm_data->map = NULL;
10160 unrecord_section_with_arm_elf_section_data (sec);
10161
e489d0ae
PB		 10162 return FALSE;
10163}
10164
957c6e41
NC		 10165static void
10166unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
10167 asection * sec,
10168 void * ignore ATTRIBUTE_UNUSED)
10169{
10170 unrecord_section_with_arm_elf_section_data (sec);
10171}
10172
10173static bfd_boolean
10174elf32_arm_close_and_cleanup (bfd * abfd)
10175{
b25e3d87
L		 10176 if (abfd->sections)
10177 bfd_map_over_sections (abfd,
10178 unrecord_section_via_map_over_sections,
10179 NULL);
957c6e41
NC		 10180
10181 return _bfd_elf_close_and_cleanup (abfd);
10182}
10183
b25e3d87
L		 10184static bfd_boolean
10185elf32_arm_bfd_free_cached_info (bfd * abfd)
10186{
10187 if (abfd->sections)
10188 bfd_map_over_sections (abfd,
10189 unrecord_section_via_map_over_sections,
10190 NULL);
10191
10192 return _bfd_free_cached_info (abfd);
10193}
10194
b7693d02
DJ		 10195/* Display STT_ARM_TFUNC symbols as functions. */
10196
10197static void
10198elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
10199 asymbol *asym)
10200{
10201 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
10202
10203 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
10204 elfsym->symbol.flags |= BSF_FUNCTION;
10205}
10206
0beaef2b
PB		 10207
10208/* Mangle thumb function symbols as we read them in. */
10209
8384fb8f 10210static bfd_boolean
0beaef2b
PB		 10211elf32_arm_swap_symbol_in (bfd * abfd,
10212 const void *psrc,
10213 const void *pshn,
10214 Elf_Internal_Sym *dst)
10215{
8384fb8f
AM		 10216 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
10217 return FALSE;
0beaef2b
PB		 10218
10219 /* New EABI objects mark thumb function symbols by setting the low bit of
10220 the address. Turn these into STT_ARM_TFUNC. */
10221 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
10222 && (dst->st_value & 1))
10223 {
10224 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
10225 dst->st_value &= ~(bfd_vma) 1;
10226 }
8384fb8f 10227 return TRUE;
0beaef2b
PB		 10228}
10229
10230
10231/* Mangle thumb function symbols as we write them out. */
10232
10233static void
10234elf32_arm_swap_symbol_out (bfd *abfd,
10235 const Elf_Internal_Sym *src,
10236 void *cdst,
10237 void *shndx)
10238{
10239 Elf_Internal_Sym newsym;
10240
10241 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10242 of the address set, as per the new EABI. We do this unconditionally
10243 because objcopy does not set the elf header flags until after
10244 it writes out the symbol table. */
10245 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
10246 {
10247 newsym = *src;
10248 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
0fa3dcad
PB		 10249 if (newsym.st_shndx != SHN_UNDEF)
10250 {
10251 /* Do this only for defined symbols. At link type, the static
10252 linker will simulate the work of dynamic linker of resolving
10253 symbols and will carry over the thumbness of found symbols to
10254 the output symbol table. It's not clear how it happens, but
b0fead2b 10255 the thumbness of undefined symbols can well be different at
0fa3dcad
PB		 10256 runtime, and writing '1' for them will be confusing for users
10257 and possibly for dynamic linker itself.
10258 */
10259 newsym.st_value |= 1;
10260 }
0beaef2b
PB		 10261
10262 src = &newsym;
10263 }
10264 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
10265}
10266
b294bdf8
MM		 10267/* Add the PT_ARM_EXIDX program header. */
10268
10269static bfd_boolean
10270elf32_arm_modify_segment_map (bfd *abfd,
10271 struct bfd_link_info *info ATTRIBUTE_UNUSED)
10272{
10273 struct elf_segment_map *m;
10274 asection *sec;
10275
10276 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10277 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10278 {
10279 /* If there is already a PT_ARM_EXIDX header, then we do not
10280 want to add another one. This situation arises when running
10281 "strip"; the input binary already has the header. */
10282 m = elf_tdata (abfd)->segment_map;
10283 while (m && m->p_type != PT_ARM_EXIDX)
10284 m = m->next;
10285 if (!m)
10286 {
10287 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
10288 if (m == NULL)
10289 return FALSE;
10290 m->p_type = PT_ARM_EXIDX;
10291 m->count = 1;
10292 m->sections[0] = sec;
10293
10294 m->next = elf_tdata (abfd)->segment_map;
10295 elf_tdata (abfd)->segment_map = m;
10296 }
10297 }
10298
10299 return TRUE;
10300}
10301
10302/* We may add a PT_ARM_EXIDX program header. */
10303
10304static int
a6b96beb
AM		 10305elf32_arm_additional_program_headers (bfd *abfd,
10306 struct bfd_link_info *info ATTRIBUTE_UNUSED)
b294bdf8
MM		 10307{
10308 asection *sec;
10309
10310 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10311 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10312 return 1;
10313 else
10314 return 0;
10315}
10316
fcb93ecf
PB		 10317/* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
10318static bfd_boolean
10319elf32_arm_is_function_type (unsigned int type)
10320{
10321 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
10322}
10323
0beaef2b
PB		 10324/* We use this to override swap_symbol_in and swap_symbol_out. */
10325const struct elf_size_info elf32_arm_size_info = {
10326 sizeof (Elf32_External_Ehdr),
10327 sizeof (Elf32_External_Phdr),
10328 sizeof (Elf32_External_Shdr),
10329 sizeof (Elf32_External_Rel),
10330 sizeof (Elf32_External_Rela),
10331 sizeof (Elf32_External_Sym),
10332 sizeof (Elf32_External_Dyn),
10333 sizeof (Elf_External_Note),
10334 4,
10335 1,
10336 32, 2,
10337 ELFCLASS32, EV_CURRENT,
10338 bfd_elf32_write_out_phdrs,
10339 bfd_elf32_write_shdrs_and_ehdr,
1489a3a0 10340 bfd_elf32_checksum_contents,
0beaef2b
PB		 10341 bfd_elf32_write_relocs,
10342 elf32_arm_swap_symbol_in,
10343 elf32_arm_swap_symbol_out,
10344 bfd_elf32_slurp_reloc_table,
10345 bfd_elf32_slurp_symbol_table,
10346 bfd_elf32_swap_dyn_in,
10347 bfd_elf32_swap_dyn_out,
10348 bfd_elf32_swap_reloc_in,
10349 bfd_elf32_swap_reloc_out,
10350 bfd_elf32_swap_reloca_in,
10351 bfd_elf32_swap_reloca_out
10352};
10353
252b5132
RH		 10354#define ELF_ARCH bfd_arch_arm
10355#define ELF_MACHINE_CODE EM_ARM
d0facd1b
NC		 10356#ifdef __QNXTARGET__
10357#define ELF_MAXPAGESIZE 0x1000
10358#else
f21f3fe0 10359#define ELF_MAXPAGESIZE 0x8000
d0facd1b 10360#endif
b1342370 10361#define ELF_MINPAGESIZE 0x1000
24718e3b 10362#define ELF_COMMONPAGESIZE 0x1000
252b5132 10363
ba93b8ac
DJ		 10364#define bfd_elf32_mkobject elf32_arm_mkobject
10365
99e4ae17
AJ		 10366#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10367#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
252b5132
RH		 10368#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10369#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10370#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
dc810e39 10371#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
157090f7 10372#define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
252b5132 10373#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
4ab527b0 10374#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
e489d0ae 10375#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
3c9458e9 10376#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
957c6e41 10377#define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
b25e3d87 10378#define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
252b5132
RH		 10379
10380#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10381#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
6a5bb875 10382#define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
252b5132
RH		 10383#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10384#define elf_backend_check_relocs elf32_arm_check_relocs
dc810e39 10385#define elf_backend_relocate_section elf32_arm_relocate_section
e489d0ae 10386#define elf_backend_write_section elf32_arm_write_section
252b5132 10387#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
5e681ec4 10388#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
252b5132
RH		 10389#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10390#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10391#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
74541ad4 10392#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
ba96a88f 10393#define elf_backend_post_process_headers elf32_arm_post_process_headers
99e4ae17 10394#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
c178919b 10395#define elf_backend_object_p elf32_arm_object_p
e16bb312 10396#define elf_backend_section_flags elf32_arm_section_flags
40a18ebd
NC		 10397#define elf_backend_fake_sections elf32_arm_fake_sections
10398#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
e16bb312 10399#define elf_backend_final_write_processing elf32_arm_final_write_processing
5e681ec4 10400#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
b7693d02 10401#define elf_backend_symbol_processing elf32_arm_symbol_processing
0beaef2b 10402#define elf_backend_size_info elf32_arm_size_info
b294bdf8
MM		 10403#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10404#define elf_backend_additional_program_headers \
10405 elf32_arm_additional_program_headers
4e617b1e
PB		 10406#define elf_backend_output_arch_local_syms \
10407 elf32_arm_output_arch_local_syms
a4fd1a8e
PB		 10408#define elf_backend_begin_write_processing \
10409 elf32_arm_begin_write_processing
fcb93ecf 10410#define elf_backend_is_function_type elf32_arm_is_function_type
252b5132 10411
5e681ec4 10412#define elf_backend_can_refcount 1
252b5132
RH		 10413#define elf_backend_can_gc_sections 1
10414#define elf_backend_plt_readonly 1
10415#define elf_backend_want_got_plt 1
10416#define elf_backend_want_plt_sym 0
4e7fd91e
PB		 10417#define elf_backend_may_use_rel_p 1
10418#define elf_backend_may_use_rela_p 0
10419#define elf_backend_default_use_rela_p 0
252b5132 10420
04f7c78d 10421#define elf_backend_got_header_size 12
04f7c78d 10422
104d59d1
JM		 10423#undef elf_backend_obj_attrs_vendor
10424#define elf_backend_obj_attrs_vendor "aeabi"
10425#undef elf_backend_obj_attrs_section
10426#define elf_backend_obj_attrs_section ".ARM.attributes"
10427#undef elf_backend_obj_attrs_arg_type
10428#define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
10429#undef elf_backend_obj_attrs_section_type
10430#define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
10431
252b5132 10432#include "elf32-target.h"
7f266840 10433
4e7fd91e
PB		 10434/* VxWorks Targets */
10435
10436#undef TARGET_LITTLE_SYM
10437#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10438#undef TARGET_LITTLE_NAME
10439#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10440#undef TARGET_BIG_SYM
10441#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10442#undef TARGET_BIG_NAME
10443#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10444
10445/* Like elf32_arm_link_hash_table_create -- but overrides
10446 appropriately for VxWorks. */
10447static struct bfd_link_hash_table *
10448elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
10449{
10450 struct bfd_link_hash_table *ret;
10451
10452 ret = elf32_arm_link_hash_table_create (abfd);
10453 if (ret)
10454 {
10455 struct elf32_arm_link_hash_table *htab
00a97672 10456 = (struct elf32_arm_link_hash_table *) ret;
4e7fd91e 10457 htab->use_rel = 0;
00a97672 10458 htab->vxworks_p = 1;
4e7fd91e
PB		 10459 }
10460 return ret;
10461}
10462
00a97672
RS		 10463static void
10464elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10465{
10466 elf32_arm_final_write_processing (abfd, linker);
10467 elf_vxworks_final_write_processing (abfd, linker);
10468}
10469
4e7fd91e
PB		 10470#undef elf32_bed
10471#define elf32_bed elf32_arm_vxworks_bed
10472
10473#undef bfd_elf32_bfd_link_hash_table_create
10474#define bfd_elf32_bfd_link_hash_table_create \
10475 elf32_arm_vxworks_link_hash_table_create
00a97672
RS		 10476#undef elf_backend_add_symbol_hook
10477#define elf_backend_add_symbol_hook \
10478 elf_vxworks_add_symbol_hook
10479#undef elf_backend_final_write_processing
10480#define elf_backend_final_write_processing \
10481 elf32_arm_vxworks_final_write_processing
10482#undef elf_backend_emit_relocs
10483#define elf_backend_emit_relocs \
10484 elf_vxworks_emit_relocs
4e7fd91e
PB		 10485
10486#undef elf_backend_may_use_rel_p
00a97672 10487#define elf_backend_may_use_rel_p 0
4e7fd91e 10488#undef elf_backend_may_use_rela_p
00a97672 10489#define elf_backend_may_use_rela_p 1
4e7fd91e 10490#undef elf_backend_default_use_rela_p
00a97672 10491#define elf_backend_default_use_rela_p 1
00a97672
RS		 10492#undef elf_backend_want_plt_sym
10493#define elf_backend_want_plt_sym 1
10494#undef ELF_MAXPAGESIZE
10495#define ELF_MAXPAGESIZE 0x1000
4e7fd91e
PB		 10496
10497#include "elf32-target.h"
10498
10499
7f266840
DJ		 10500/* Symbian OS Targets */
10501
10502#undef TARGET_LITTLE_SYM
10503#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10504#undef TARGET_LITTLE_NAME
10505#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10506#undef TARGET_BIG_SYM
10507#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10508#undef TARGET_BIG_NAME
10509#define TARGET_BIG_NAME "elf32-bigarm-symbian"
10510
10511/* Like elf32_arm_link_hash_table_create -- but overrides
10512 appropriately for Symbian OS. */
10513static struct bfd_link_hash_table *
10514elf32_arm_symbian_link_hash_table_create (bfd *abfd)
10515{
10516 struct bfd_link_hash_table *ret;
10517
10518 ret = elf32_arm_link_hash_table_create (abfd);
10519 if (ret)
10520 {
10521 struct elf32_arm_link_hash_table *htab
10522 = (struct elf32_arm_link_hash_table *)ret;
10523 /* There is no PLT header for Symbian OS. */
10524 htab->plt_header_size = 0;
10525 /* The PLT entries are each three instructions. */
10526 htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
10527 htab->symbian_p = 1;
33bfe774
JB		 10528 /* Symbian uses armv5t or above, so use_blx is always true. */
10529 htab->use_blx = 1;
67687978 10530 htab->root.is_relocatable_executable = 1;
7f266840
DJ		 10531 }
10532 return ret;
10533}
10534
b35d266b 10535static const struct bfd_elf_special_section
551b43fd 10536elf32_arm_symbian_special_sections[] =
7f266840 10537{
5cd3778d
MM		 10538 /* In a BPABI executable, the dynamic linking sections do not go in
10539 the loadable read-only segment. The post-linker may wish to
10540 refer to these sections, but they are not part of the final
10541 program image. */
0112cd26
NC		 10542 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
10543 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
10544 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
10545 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
10546 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
5cd3778d
MM		 10547 /* These sections do not need to be writable as the SymbianOS
10548 postlinker will arrange things so that no dynamic relocation is
10549 required. */
0112cd26
NC		 10550 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
10551 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
10552 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
10553 { NULL, 0, 0, 0, 0 }
7f266840
DJ		 10554};
10555
c3c76620 10556static void
b34af79c 10557elf32_arm_symbian_begin_write_processing (bfd *abfd,
a4fd1a8e 10558 struct bfd_link_info *link_info)
c3c76620
MM		 10559{
10560 /* BPABI objects are never loaded directly by an OS kernel; they are
10561 processed by a postlinker first, into an OS-specific format. If
10562 the D_PAGED bit is set on the file, BFD will align segments on
10563 page boundaries, so that an OS can directly map the file. With
10564 BPABI objects, that just results in wasted space. In addition,
10565 because we clear the D_PAGED bit, map_sections_to_segments will
10566 recognize that the program headers should not be mapped into any
10567 loadable segment. */
10568 abfd->flags &= ~D_PAGED;
a4fd1a8e 10569 elf32_arm_begin_write_processing(abfd, link_info);
c3c76620 10570}
7f266840
DJ		 10571
10572static bfd_boolean
b34af79c 10573elf32_arm_symbian_modify_segment_map (bfd *abfd,
b294bdf8 10574 struct bfd_link_info *info)
7f266840
DJ		 10575{
10576 struct elf_segment_map *m;
10577 asection *dynsec;
10578
7f266840
DJ		 10579 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10580 segment. However, because the .dynamic section is not marked
10581 with SEC_LOAD, the generic ELF code will not create such a
10582 segment. */
10583 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
10584 if (dynsec)
10585 {
8ded5a0f
AM		 10586 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
10587 if (m->p_type == PT_DYNAMIC)
10588 break;
10589
10590 if (m == NULL)
10591 {
10592 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
10593 m->next = elf_tdata (abfd)->segment_map;
10594 elf_tdata (abfd)->segment_map = m;
10595 }
7f266840
DJ		 10596 }
10597
b294bdf8
MM		 10598 /* Also call the generic arm routine. */
10599 return elf32_arm_modify_segment_map (abfd, info);
7f266840
DJ		 10600}
10601
10602#undef elf32_bed
10603#define elf32_bed elf32_arm_symbian_bed
10604
10605/* The dynamic sections are not allocated on SymbianOS; the postlinker
10606 will process them and then discard them. */
10607#undef ELF_DYNAMIC_SEC_FLAGS
10608#define ELF_DYNAMIC_SEC_FLAGS \
10609 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10610
10611#undef bfd_elf32_bfd_link_hash_table_create
10612#define bfd_elf32_bfd_link_hash_table_create \
10613 elf32_arm_symbian_link_hash_table_create
00a97672 10614#undef elf_backend_add_symbol_hook
7f266840 10615
29ef7005
L		 10616#undef elf_backend_special_sections
10617#define elf_backend_special_sections elf32_arm_symbian_special_sections
7f266840 10618
c3c76620
MM		 10619#undef elf_backend_begin_write_processing
10620#define elf_backend_begin_write_processing \
10621 elf32_arm_symbian_begin_write_processing
00a97672
RS		 10622#undef elf_backend_final_write_processing
10623#define elf_backend_final_write_processing \
10624 elf32_arm_final_write_processing
10625#undef elf_backend_emit_relocs
c3c76620 10626
7f266840
DJ		 10627#undef elf_backend_modify_segment_map
10628#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10629
10630/* There is no .got section for BPABI objects, and hence no header. */
10631#undef elf_backend_got_header_size
10632#define elf_backend_got_header_size 0
10633
10634/* Similarly, there is no .got.plt section. */
10635#undef elf_backend_want_got_plt
10636#define elf_backend_want_got_plt 0
10637
4e7fd91e 10638#undef elf_backend_may_use_rel_p
00a97672 10639#define elf_backend_may_use_rel_p 1
4e7fd91e 10640#undef elf_backend_may_use_rela_p
00a97672 10641#define elf_backend_may_use_rela_p 0
4e7fd91e 10642#undef elf_backend_default_use_rela_p
00a97672 10643#define elf_backend_default_use_rela_p 0
00a97672
RS		 10644#undef elf_backend_want_plt_sym
10645#define elf_backend_want_plt_sym 0
10646#undef ELF_MAXPAGESIZE
10647#define ELF_MAXPAGESIZE 0x8000
4e7fd91e 10648
7f266840 10649#include "elf32-target.h"
GDB Binutils - Deliverables
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