* mi/mi-interp.c (mi_solib_loaded, mi_solib_unloaded): New.
[deliverable/binutils-gdb.git] / bfd / elf32-arm.c
CommitLineData
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 29
00a97672
RS
30/* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32#define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
34
35/* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37#define RELOC_SIZE(HTAB) \
38 ((HTAB)->use_rel \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
41
42/* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44#define SWAP_RELOC_IN(HTAB) \
45 ((HTAB)->use_rel \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
48
49/* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51#define SWAP_RELOC_OUT(HTAB) \
52 ((HTAB)->use_rel \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
55
7f266840
DJ
56#define elf_info_to_howto 0
57#define elf_info_to_howto_rel elf32_arm_info_to_howto
58
59#define ARM_ELF_ABI_VERSION 0
60#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
61
24718e3b 62static struct elf_backend_data elf32_arm_vxworks_bed;
00a97672 63
7f266840
DJ
64/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
65 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
66 in that slot. */
67
c19d1205 68static reloc_howto_type elf32_arm_howto_table_1[] =
7f266840 69{
8029a119 70 /* No relocation. */
7f266840
DJ
71 HOWTO (R_ARM_NONE, /* type */
72 0, /* rightshift */
73 0, /* size (0 = byte, 1 = short, 2 = long) */
74 0, /* bitsize */
75 FALSE, /* pc_relative */
76 0, /* bitpos */
77 complain_overflow_dont,/* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_ARM_NONE", /* name */
80 FALSE, /* partial_inplace */
81 0, /* src_mask */
82 0, /* dst_mask */
83 FALSE), /* pcrel_offset */
84
85 HOWTO (R_ARM_PC24, /* type */
86 2, /* rightshift */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
88 24, /* bitsize */
89 TRUE, /* pc_relative */
90 0, /* bitpos */
91 complain_overflow_signed,/* complain_on_overflow */
92 bfd_elf_generic_reloc, /* special_function */
93 "R_ARM_PC24", /* name */
94 FALSE, /* partial_inplace */
95 0x00ffffff, /* src_mask */
96 0x00ffffff, /* dst_mask */
97 TRUE), /* pcrel_offset */
98
99 /* 32 bit absolute */
100 HOWTO (R_ARM_ABS32, /* type */
101 0, /* rightshift */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
103 32, /* bitsize */
104 FALSE, /* pc_relative */
105 0, /* bitpos */
106 complain_overflow_bitfield,/* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_ARM_ABS32", /* name */
109 FALSE, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE), /* pcrel_offset */
113
114 /* standard 32bit pc-relative reloc */
115 HOWTO (R_ARM_REL32, /* type */
116 0, /* rightshift */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
118 32, /* bitsize */
119 TRUE, /* pc_relative */
120 0, /* bitpos */
121 complain_overflow_bitfield,/* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_ARM_REL32", /* name */
124 FALSE, /* partial_inplace */
125 0xffffffff, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE), /* pcrel_offset */
128
c19d1205 129 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
4962c51a 130 HOWTO (R_ARM_LDR_PC_G0, /* type */
7f266840
DJ
131 0, /* rightshift */
132 0, /* size (0 = byte, 1 = short, 2 = long) */
4962c51a
MS
133 32, /* bitsize */
134 TRUE, /* pc_relative */
7f266840 135 0, /* bitpos */
4962c51a 136 complain_overflow_dont,/* complain_on_overflow */
7f266840 137 bfd_elf_generic_reloc, /* special_function */
4962c51a 138 "R_ARM_LDR_PC_G0", /* name */
7f266840 139 FALSE, /* partial_inplace */
4962c51a
MS
140 0xffffffff, /* src_mask */
141 0xffffffff, /* dst_mask */
142 TRUE), /* pcrel_offset */
7f266840
DJ
143
144 /* 16 bit absolute */
145 HOWTO (R_ARM_ABS16, /* type */
146 0, /* rightshift */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
148 16, /* bitsize */
149 FALSE, /* pc_relative */
150 0, /* bitpos */
151 complain_overflow_bitfield,/* complain_on_overflow */
152 bfd_elf_generic_reloc, /* special_function */
153 "R_ARM_ABS16", /* name */
154 FALSE, /* partial_inplace */
155 0x0000ffff, /* src_mask */
156 0x0000ffff, /* dst_mask */
157 FALSE), /* pcrel_offset */
158
159 /* 12 bit absolute */
160 HOWTO (R_ARM_ABS12, /* type */
161 0, /* rightshift */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
163 12, /* bitsize */
164 FALSE, /* pc_relative */
165 0, /* bitpos */
166 complain_overflow_bitfield,/* complain_on_overflow */
167 bfd_elf_generic_reloc, /* special_function */
168 "R_ARM_ABS12", /* name */
169 FALSE, /* partial_inplace */
00a97672
RS
170 0x00000fff, /* src_mask */
171 0x00000fff, /* dst_mask */
7f266840
DJ
172 FALSE), /* pcrel_offset */
173
174 HOWTO (R_ARM_THM_ABS5, /* type */
175 6, /* rightshift */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
177 5, /* bitsize */
178 FALSE, /* pc_relative */
179 0, /* bitpos */
180 complain_overflow_bitfield,/* complain_on_overflow */
181 bfd_elf_generic_reloc, /* special_function */
182 "R_ARM_THM_ABS5", /* name */
183 FALSE, /* partial_inplace */
184 0x000007e0, /* src_mask */
185 0x000007e0, /* dst_mask */
186 FALSE), /* pcrel_offset */
187
188 /* 8 bit absolute */
189 HOWTO (R_ARM_ABS8, /* type */
190 0, /* rightshift */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
192 8, /* bitsize */
193 FALSE, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_bitfield,/* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_ARM_ABS8", /* name */
198 FALSE, /* partial_inplace */
199 0x000000ff, /* src_mask */
200 0x000000ff, /* dst_mask */
201 FALSE), /* pcrel_offset */
202
203 HOWTO (R_ARM_SBREL32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
207 FALSE, /* pc_relative */
208 0, /* bitpos */
209 complain_overflow_dont,/* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_ARM_SBREL32", /* name */
212 FALSE, /* partial_inplace */
213 0xffffffff, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
216
c19d1205 217 HOWTO (R_ARM_THM_CALL, /* type */
7f266840
DJ
218 1, /* rightshift */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
e95de063 220 25, /* bitsize */
7f266840
DJ
221 TRUE, /* pc_relative */
222 0, /* bitpos */
223 complain_overflow_signed,/* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
c19d1205 225 "R_ARM_THM_CALL", /* name */
7f266840
DJ
226 FALSE, /* partial_inplace */
227 0x07ff07ff, /* src_mask */
228 0x07ff07ff, /* dst_mask */
229 TRUE), /* pcrel_offset */
230
231 HOWTO (R_ARM_THM_PC8, /* type */
232 1, /* rightshift */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
234 8, /* bitsize */
235 TRUE, /* pc_relative */
236 0, /* bitpos */
237 complain_overflow_signed,/* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_ARM_THM_PC8", /* name */
240 FALSE, /* partial_inplace */
241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
243 TRUE), /* pcrel_offset */
244
c19d1205 245 HOWTO (R_ARM_BREL_ADJ, /* type */
7f266840
DJ
246 1, /* rightshift */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW
248 32, /* bitsize */
249 FALSE, /* pc_relative */
7f266840
DJ
250 0, /* bitpos */
251 complain_overflow_signed,/* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
c19d1205 253 "R_ARM_BREL_ADJ", /* name */
7f266840 254 FALSE, /* partial_inplace */
c19d1205
ZW
255 0xffffffff, /* src_mask */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
7f266840
DJ
258
259 HOWTO (R_ARM_SWI24, /* type */
260 0, /* rightshift */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
262 0, /* bitsize */
263 FALSE, /* pc_relative */
264 0, /* bitpos */
265 complain_overflow_signed,/* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_ARM_SWI24", /* name */
268 FALSE, /* partial_inplace */
269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
271 FALSE), /* pcrel_offset */
272
273 HOWTO (R_ARM_THM_SWI8, /* type */
274 0, /* rightshift */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
276 0, /* bitsize */
277 FALSE, /* pc_relative */
278 0, /* bitpos */
279 complain_overflow_signed,/* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_ARM_SWI8", /* name */
282 FALSE, /* partial_inplace */
283 0x00000000, /* src_mask */
284 0x00000000, /* dst_mask */
285 FALSE), /* pcrel_offset */
286
287 /* BLX instruction for the ARM. */
288 HOWTO (R_ARM_XPC25, /* type */
289 2, /* rightshift */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
291 25, /* bitsize */
292 TRUE, /* pc_relative */
293 0, /* bitpos */
294 complain_overflow_signed,/* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_ARM_XPC25", /* name */
297 FALSE, /* partial_inplace */
298 0x00ffffff, /* src_mask */
299 0x00ffffff, /* dst_mask */
300 TRUE), /* pcrel_offset */
301
302 /* BLX instruction for the Thumb. */
303 HOWTO (R_ARM_THM_XPC22, /* type */
304 2, /* rightshift */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
306 22, /* bitsize */
307 TRUE, /* pc_relative */
308 0, /* bitpos */
309 complain_overflow_signed,/* complain_on_overflow */
310 bfd_elf_generic_reloc, /* special_function */
311 "R_ARM_THM_XPC22", /* name */
312 FALSE, /* partial_inplace */
313 0x07ff07ff, /* src_mask */
314 0x07ff07ff, /* dst_mask */
315 TRUE), /* pcrel_offset */
316
ba93b8ac 317 /* Dynamic TLS relocations. */
7f266840 318
ba93b8ac
DJ
319 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
320 0, /* rightshift */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
322 32, /* bitsize */
323 FALSE, /* pc_relative */
324 0, /* bitpos */
325 complain_overflow_bitfield,/* complain_on_overflow */
326 bfd_elf_generic_reloc, /* special_function */
327 "R_ARM_TLS_DTPMOD32", /* name */
328 TRUE, /* partial_inplace */
329 0xffffffff, /* src_mask */
330 0xffffffff, /* dst_mask */
331 FALSE), /* pcrel_offset */
7f266840 332
ba93b8ac
DJ
333 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 32, /* bitsize */
337 FALSE, /* pc_relative */
338 0, /* bitpos */
339 complain_overflow_bitfield,/* complain_on_overflow */
340 bfd_elf_generic_reloc, /* special_function */
341 "R_ARM_TLS_DTPOFF32", /* name */
342 TRUE, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE), /* pcrel_offset */
7f266840 346
ba93b8ac
DJ
347 HOWTO (R_ARM_TLS_TPOFF32, /* type */
348 0, /* rightshift */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
350 32, /* bitsize */
351 FALSE, /* pc_relative */
352 0, /* bitpos */
353 complain_overflow_bitfield,/* complain_on_overflow */
354 bfd_elf_generic_reloc, /* special_function */
355 "R_ARM_TLS_TPOFF32", /* name */
356 TRUE, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 FALSE), /* pcrel_offset */
7f266840
DJ
360
361 /* Relocs used in ARM Linux */
362
363 HOWTO (R_ARM_COPY, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 32, /* bitsize */
367 FALSE, /* pc_relative */
368 0, /* bitpos */
369 complain_overflow_bitfield,/* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_ARM_COPY", /* name */
372 TRUE, /* partial_inplace */
373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
375 FALSE), /* pcrel_offset */
376
377 HOWTO (R_ARM_GLOB_DAT, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 32, /* bitsize */
381 FALSE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_bitfield,/* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_ARM_GLOB_DAT", /* name */
386 TRUE, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 FALSE), /* pcrel_offset */
390
391 HOWTO (R_ARM_JUMP_SLOT, /* type */
392 0, /* rightshift */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
394 32, /* bitsize */
395 FALSE, /* pc_relative */
396 0, /* bitpos */
397 complain_overflow_bitfield,/* complain_on_overflow */
398 bfd_elf_generic_reloc, /* special_function */
399 "R_ARM_JUMP_SLOT", /* name */
400 TRUE, /* partial_inplace */
401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
403 FALSE), /* pcrel_offset */
404
405 HOWTO (R_ARM_RELATIVE, /* type */
406 0, /* rightshift */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
408 32, /* bitsize */
409 FALSE, /* pc_relative */
410 0, /* bitpos */
411 complain_overflow_bitfield,/* complain_on_overflow */
412 bfd_elf_generic_reloc, /* special_function */
413 "R_ARM_RELATIVE", /* name */
414 TRUE, /* partial_inplace */
415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
417 FALSE), /* pcrel_offset */
418
c19d1205 419 HOWTO (R_ARM_GOTOFF32, /* type */
7f266840
DJ
420 0, /* rightshift */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
422 32, /* bitsize */
423 FALSE, /* pc_relative */
424 0, /* bitpos */
425 complain_overflow_bitfield,/* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
c19d1205 427 "R_ARM_GOTOFF32", /* name */
7f266840
DJ
428 TRUE, /* partial_inplace */
429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
432
433 HOWTO (R_ARM_GOTPC, /* type */
434 0, /* rightshift */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
436 32, /* bitsize */
437 TRUE, /* pc_relative */
438 0, /* bitpos */
439 complain_overflow_bitfield,/* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_ARM_GOTPC", /* name */
442 TRUE, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE), /* pcrel_offset */
446
447 HOWTO (R_ARM_GOT32, /* type */
448 0, /* rightshift */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
450 32, /* bitsize */
451 FALSE, /* pc_relative */
452 0, /* bitpos */
453 complain_overflow_bitfield,/* complain_on_overflow */
454 bfd_elf_generic_reloc, /* special_function */
455 "R_ARM_GOT32", /* name */
456 TRUE, /* partial_inplace */
457 0xffffffff, /* src_mask */
458 0xffffffff, /* dst_mask */
459 FALSE), /* pcrel_offset */
460
461 HOWTO (R_ARM_PLT32, /* type */
462 2, /* rightshift */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
ce490eda 464 24, /* bitsize */
7f266840
DJ
465 TRUE, /* pc_relative */
466 0, /* bitpos */
467 complain_overflow_bitfield,/* complain_on_overflow */
468 bfd_elf_generic_reloc, /* special_function */
469 "R_ARM_PLT32", /* name */
ce490eda 470 FALSE, /* partial_inplace */
7f266840
DJ
471 0x00ffffff, /* src_mask */
472 0x00ffffff, /* dst_mask */
473 TRUE), /* pcrel_offset */
474
475 HOWTO (R_ARM_CALL, /* type */
476 2, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 24, /* bitsize */
479 TRUE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_signed,/* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_ARM_CALL", /* name */
484 FALSE, /* partial_inplace */
485 0x00ffffff, /* src_mask */
486 0x00ffffff, /* dst_mask */
487 TRUE), /* pcrel_offset */
488
489 HOWTO (R_ARM_JUMP24, /* type */
490 2, /* rightshift */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
492 24, /* bitsize */
493 TRUE, /* pc_relative */
494 0, /* bitpos */
495 complain_overflow_signed,/* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_ARM_JUMP24", /* name */
498 FALSE, /* partial_inplace */
499 0x00ffffff, /* src_mask */
500 0x00ffffff, /* dst_mask */
501 TRUE), /* pcrel_offset */
502
c19d1205
ZW
503 HOWTO (R_ARM_THM_JUMP24, /* type */
504 1, /* rightshift */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
506 24, /* bitsize */
507 TRUE, /* pc_relative */
7f266840 508 0, /* bitpos */
c19d1205 509 complain_overflow_signed,/* complain_on_overflow */
7f266840 510 bfd_elf_generic_reloc, /* special_function */
c19d1205 511 "R_ARM_THM_JUMP24", /* name */
7f266840 512 FALSE, /* partial_inplace */
c19d1205
ZW
513 0x07ff2fff, /* src_mask */
514 0x07ff2fff, /* dst_mask */
515 TRUE), /* pcrel_offset */
7f266840 516
c19d1205 517 HOWTO (R_ARM_BASE_ABS, /* type */
7f266840 518 0, /* rightshift */
c19d1205
ZW
519 2, /* size (0 = byte, 1 = short, 2 = long) */
520 32, /* bitsize */
7f266840
DJ
521 FALSE, /* pc_relative */
522 0, /* bitpos */
523 complain_overflow_dont,/* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
c19d1205 525 "R_ARM_BASE_ABS", /* name */
7f266840 526 FALSE, /* partial_inplace */
c19d1205
ZW
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
7f266840
DJ
529 FALSE), /* pcrel_offset */
530
531 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
532 0, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 12, /* bitsize */
535 TRUE, /* pc_relative */
536 0, /* bitpos */
537 complain_overflow_dont,/* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_ARM_ALU_PCREL_7_0", /* name */
540 FALSE, /* partial_inplace */
541 0x00000fff, /* src_mask */
542 0x00000fff, /* dst_mask */
543 TRUE), /* pcrel_offset */
544
545 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
546 0, /* rightshift */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
548 12, /* bitsize */
549 TRUE, /* pc_relative */
550 8, /* bitpos */
551 complain_overflow_dont,/* complain_on_overflow */
552 bfd_elf_generic_reloc, /* special_function */
553 "R_ARM_ALU_PCREL_15_8",/* name */
554 FALSE, /* partial_inplace */
555 0x00000fff, /* src_mask */
556 0x00000fff, /* dst_mask */
557 TRUE), /* pcrel_offset */
558
559 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
560 0, /* rightshift */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
562 12, /* bitsize */
563 TRUE, /* pc_relative */
564 16, /* bitpos */
565 complain_overflow_dont,/* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_ARM_ALU_PCREL_23_15",/* name */
568 FALSE, /* partial_inplace */
569 0x00000fff, /* src_mask */
570 0x00000fff, /* dst_mask */
571 TRUE), /* pcrel_offset */
572
573 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 12, /* bitsize */
577 FALSE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_dont,/* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_ARM_LDR_SBREL_11_0",/* name */
582 FALSE, /* partial_inplace */
583 0x00000fff, /* src_mask */
584 0x00000fff, /* dst_mask */
585 FALSE), /* pcrel_offset */
586
587 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
588 0, /* rightshift */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
590 8, /* bitsize */
591 FALSE, /* pc_relative */
592 12, /* bitpos */
593 complain_overflow_dont,/* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_ARM_ALU_SBREL_19_12",/* name */
596 FALSE, /* partial_inplace */
597 0x000ff000, /* src_mask */
598 0x000ff000, /* dst_mask */
599 FALSE), /* pcrel_offset */
600
601 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
602 0, /* rightshift */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
604 8, /* bitsize */
605 FALSE, /* pc_relative */
606 20, /* bitpos */
607 complain_overflow_dont,/* complain_on_overflow */
608 bfd_elf_generic_reloc, /* special_function */
609 "R_ARM_ALU_SBREL_27_20",/* name */
610 FALSE, /* partial_inplace */
611 0x0ff00000, /* src_mask */
612 0x0ff00000, /* dst_mask */
613 FALSE), /* pcrel_offset */
614
615 HOWTO (R_ARM_TARGET1, /* type */
616 0, /* rightshift */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
618 32, /* bitsize */
619 FALSE, /* pc_relative */
620 0, /* bitpos */
621 complain_overflow_dont,/* complain_on_overflow */
622 bfd_elf_generic_reloc, /* special_function */
623 "R_ARM_TARGET1", /* name */
624 FALSE, /* partial_inplace */
625 0xffffffff, /* src_mask */
626 0xffffffff, /* dst_mask */
627 FALSE), /* pcrel_offset */
628
629 HOWTO (R_ARM_ROSEGREL32, /* type */
630 0, /* rightshift */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
632 32, /* bitsize */
633 FALSE, /* pc_relative */
634 0, /* bitpos */
635 complain_overflow_dont,/* complain_on_overflow */
636 bfd_elf_generic_reloc, /* special_function */
637 "R_ARM_ROSEGREL32", /* name */
638 FALSE, /* partial_inplace */
639 0xffffffff, /* src_mask */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
642
643 HOWTO (R_ARM_V4BX, /* type */
644 0, /* rightshift */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
646 32, /* bitsize */
647 FALSE, /* pc_relative */
648 0, /* bitpos */
649 complain_overflow_dont,/* complain_on_overflow */
650 bfd_elf_generic_reloc, /* special_function */
651 "R_ARM_V4BX", /* name */
652 FALSE, /* partial_inplace */
653 0xffffffff, /* src_mask */
654 0xffffffff, /* dst_mask */
655 FALSE), /* pcrel_offset */
656
657 HOWTO (R_ARM_TARGET2, /* type */
658 0, /* rightshift */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
660 32, /* bitsize */
661 FALSE, /* pc_relative */
662 0, /* bitpos */
663 complain_overflow_signed,/* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_ARM_TARGET2", /* name */
666 FALSE, /* partial_inplace */
667 0xffffffff, /* src_mask */
668 0xffffffff, /* dst_mask */
669 TRUE), /* pcrel_offset */
670
671 HOWTO (R_ARM_PREL31, /* type */
672 0, /* rightshift */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
674 31, /* bitsize */
675 TRUE, /* pc_relative */
676 0, /* bitpos */
677 complain_overflow_signed,/* complain_on_overflow */
678 bfd_elf_generic_reloc, /* special_function */
679 "R_ARM_PREL31", /* name */
680 FALSE, /* partial_inplace */
681 0x7fffffff, /* src_mask */
682 0x7fffffff, /* dst_mask */
683 TRUE), /* pcrel_offset */
c19d1205
ZW
684
685 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
686 0, /* rightshift */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
688 16, /* bitsize */
689 FALSE, /* pc_relative */
690 0, /* bitpos */
691 complain_overflow_dont,/* complain_on_overflow */
692 bfd_elf_generic_reloc, /* special_function */
693 "R_ARM_MOVW_ABS_NC", /* name */
694 FALSE, /* partial_inplace */
39623e12
PB
695 0x000f0fff, /* src_mask */
696 0x000f0fff, /* dst_mask */
c19d1205
ZW
697 FALSE), /* pcrel_offset */
698
699 HOWTO (R_ARM_MOVT_ABS, /* type */
700 0, /* rightshift */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_bitfield,/* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 "R_ARM_MOVT_ABS", /* name */
708 FALSE, /* partial_inplace */
39623e12
PB
709 0x000f0fff, /* src_mask */
710 0x000f0fff, /* dst_mask */
c19d1205
ZW
711 FALSE), /* pcrel_offset */
712
713 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
714 0, /* rightshift */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
717 TRUE, /* pc_relative */
718 0, /* bitpos */
719 complain_overflow_dont,/* complain_on_overflow */
720 bfd_elf_generic_reloc, /* special_function */
721 "R_ARM_MOVW_PREL_NC", /* name */
722 FALSE, /* partial_inplace */
39623e12
PB
723 0x000f0fff, /* src_mask */
724 0x000f0fff, /* dst_mask */
c19d1205
ZW
725 TRUE), /* pcrel_offset */
726
727 HOWTO (R_ARM_MOVT_PREL, /* type */
728 0, /* rightshift */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
731 TRUE, /* pc_relative */
732 0, /* bitpos */
733 complain_overflow_bitfield,/* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_ARM_MOVT_PREL", /* name */
736 FALSE, /* partial_inplace */
39623e12
PB
737 0x000f0fff, /* src_mask */
738 0x000f0fff, /* dst_mask */
c19d1205
ZW
739 TRUE), /* pcrel_offset */
740
741 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
742 0, /* rightshift */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
744 16, /* bitsize */
745 FALSE, /* pc_relative */
746 0, /* bitpos */
747 complain_overflow_dont,/* complain_on_overflow */
748 bfd_elf_generic_reloc, /* special_function */
749 "R_ARM_THM_MOVW_ABS_NC",/* name */
750 FALSE, /* partial_inplace */
751 0x040f70ff, /* src_mask */
752 0x040f70ff, /* dst_mask */
753 FALSE), /* pcrel_offset */
754
755 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
756 0, /* rightshift */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
758 16, /* bitsize */
759 FALSE, /* pc_relative */
760 0, /* bitpos */
761 complain_overflow_bitfield,/* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
763 "R_ARM_THM_MOVT_ABS", /* name */
764 FALSE, /* partial_inplace */
765 0x040f70ff, /* src_mask */
766 0x040f70ff, /* dst_mask */
767 FALSE), /* pcrel_offset */
768
769 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
770 0, /* rightshift */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
772 16, /* bitsize */
773 TRUE, /* pc_relative */
774 0, /* bitpos */
775 complain_overflow_dont,/* complain_on_overflow */
776 bfd_elf_generic_reloc, /* special_function */
777 "R_ARM_THM_MOVW_PREL_NC",/* name */
778 FALSE, /* partial_inplace */
779 0x040f70ff, /* src_mask */
780 0x040f70ff, /* dst_mask */
781 TRUE), /* pcrel_offset */
782
783 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
784 0, /* rightshift */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
786 16, /* bitsize */
787 TRUE, /* pc_relative */
788 0, /* bitpos */
789 complain_overflow_bitfield,/* complain_on_overflow */
790 bfd_elf_generic_reloc, /* special_function */
791 "R_ARM_THM_MOVT_PREL", /* name */
792 FALSE, /* partial_inplace */
793 0x040f70ff, /* src_mask */
794 0x040f70ff, /* dst_mask */
795 TRUE), /* pcrel_offset */
796
797 HOWTO (R_ARM_THM_JUMP19, /* type */
798 1, /* rightshift */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
800 19, /* bitsize */
801 TRUE, /* pc_relative */
802 0, /* bitpos */
803 complain_overflow_signed,/* complain_on_overflow */
804 bfd_elf_generic_reloc, /* special_function */
805 "R_ARM_THM_JUMP19", /* name */
806 FALSE, /* partial_inplace */
807 0x043f2fff, /* src_mask */
808 0x043f2fff, /* dst_mask */
809 TRUE), /* pcrel_offset */
810
811 HOWTO (R_ARM_THM_JUMP6, /* type */
812 1, /* rightshift */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
814 6, /* bitsize */
815 TRUE, /* pc_relative */
816 0, /* bitpos */
817 complain_overflow_unsigned,/* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_ARM_THM_JUMP6", /* name */
820 FALSE, /* partial_inplace */
821 0x02f8, /* src_mask */
822 0x02f8, /* dst_mask */
823 TRUE), /* pcrel_offset */
824
825 /* These are declared as 13-bit signed relocations because we can
826 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
827 versa. */
828 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
829 0, /* rightshift */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
831 13, /* bitsize */
832 TRUE, /* pc_relative */
833 0, /* bitpos */
2cab6cc3 834 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW
835 bfd_elf_generic_reloc, /* special_function */
836 "R_ARM_THM_ALU_PREL_11_0",/* name */
837 FALSE, /* partial_inplace */
2cab6cc3
MS
838 0xffffffff, /* src_mask */
839 0xffffffff, /* dst_mask */
c19d1205
ZW
840 TRUE), /* pcrel_offset */
841
842 HOWTO (R_ARM_THM_PC12, /* type */
843 0, /* rightshift */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
845 13, /* bitsize */
846 TRUE, /* pc_relative */
847 0, /* bitpos */
2cab6cc3 848 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW
849 bfd_elf_generic_reloc, /* special_function */
850 "R_ARM_THM_PC12", /* name */
851 FALSE, /* partial_inplace */
2cab6cc3
MS
852 0xffffffff, /* src_mask */
853 0xffffffff, /* dst_mask */
c19d1205
ZW
854 TRUE), /* pcrel_offset */
855
856 HOWTO (R_ARM_ABS32_NOI, /* type */
857 0, /* rightshift */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
859 32, /* bitsize */
860 FALSE, /* pc_relative */
861 0, /* bitpos */
862 complain_overflow_dont,/* complain_on_overflow */
863 bfd_elf_generic_reloc, /* special_function */
864 "R_ARM_ABS32_NOI", /* name */
865 FALSE, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
869
870 HOWTO (R_ARM_REL32_NOI, /* type */
871 0, /* rightshift */
872 2, /* size (0 = byte, 1 = short, 2 = long) */
873 32, /* bitsize */
874 TRUE, /* pc_relative */
875 0, /* bitpos */
876 complain_overflow_dont,/* complain_on_overflow */
877 bfd_elf_generic_reloc, /* special_function */
878 "R_ARM_REL32_NOI", /* name */
879 FALSE, /* partial_inplace */
880 0xffffffff, /* src_mask */
881 0xffffffff, /* dst_mask */
882 FALSE), /* pcrel_offset */
7f266840 883
4962c51a
MS
884 /* Group relocations. */
885
886 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
887 0, /* rightshift */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
889 32, /* bitsize */
890 TRUE, /* pc_relative */
891 0, /* bitpos */
892 complain_overflow_dont,/* complain_on_overflow */
893 bfd_elf_generic_reloc, /* special_function */
894 "R_ARM_ALU_PC_G0_NC", /* name */
895 FALSE, /* partial_inplace */
896 0xffffffff, /* src_mask */
897 0xffffffff, /* dst_mask */
898 TRUE), /* pcrel_offset */
899
900 HOWTO (R_ARM_ALU_PC_G0, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 32, /* bitsize */
904 TRUE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_dont,/* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_ARM_ALU_PC_G0", /* name */
909 FALSE, /* partial_inplace */
910 0xffffffff, /* src_mask */
911 0xffffffff, /* dst_mask */
912 TRUE), /* pcrel_offset */
913
914 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
915 0, /* rightshift */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
917 32, /* bitsize */
918 TRUE, /* pc_relative */
919 0, /* bitpos */
920 complain_overflow_dont,/* complain_on_overflow */
921 bfd_elf_generic_reloc, /* special_function */
922 "R_ARM_ALU_PC_G1_NC", /* name */
923 FALSE, /* partial_inplace */
924 0xffffffff, /* src_mask */
925 0xffffffff, /* dst_mask */
926 TRUE), /* pcrel_offset */
927
928 HOWTO (R_ARM_ALU_PC_G1, /* type */
929 0, /* rightshift */
930 2, /* size (0 = byte, 1 = short, 2 = long) */
931 32, /* bitsize */
932 TRUE, /* pc_relative */
933 0, /* bitpos */
934 complain_overflow_dont,/* complain_on_overflow */
935 bfd_elf_generic_reloc, /* special_function */
936 "R_ARM_ALU_PC_G1", /* name */
937 FALSE, /* partial_inplace */
938 0xffffffff, /* src_mask */
939 0xffffffff, /* dst_mask */
940 TRUE), /* pcrel_offset */
941
942 HOWTO (R_ARM_ALU_PC_G2, /* type */
943 0, /* rightshift */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
945 32, /* bitsize */
946 TRUE, /* pc_relative */
947 0, /* bitpos */
948 complain_overflow_dont,/* complain_on_overflow */
949 bfd_elf_generic_reloc, /* special_function */
950 "R_ARM_ALU_PC_G2", /* name */
951 FALSE, /* partial_inplace */
952 0xffffffff, /* src_mask */
953 0xffffffff, /* dst_mask */
954 TRUE), /* pcrel_offset */
955
956 HOWTO (R_ARM_LDR_PC_G1, /* type */
957 0, /* rightshift */
958 2, /* size (0 = byte, 1 = short, 2 = long) */
959 32, /* bitsize */
960 TRUE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont,/* complain_on_overflow */
963 bfd_elf_generic_reloc, /* special_function */
964 "R_ARM_LDR_PC_G1", /* name */
965 FALSE, /* partial_inplace */
966 0xffffffff, /* src_mask */
967 0xffffffff, /* dst_mask */
968 TRUE), /* pcrel_offset */
969
970 HOWTO (R_ARM_LDR_PC_G2, /* type */
971 0, /* rightshift */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
973 32, /* bitsize */
974 TRUE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_dont,/* complain_on_overflow */
977 bfd_elf_generic_reloc, /* special_function */
978 "R_ARM_LDR_PC_G2", /* name */
979 FALSE, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 TRUE), /* pcrel_offset */
983
984 HOWTO (R_ARM_LDRS_PC_G0, /* type */
985 0, /* rightshift */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
987 32, /* bitsize */
988 TRUE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_dont,/* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
992 "R_ARM_LDRS_PC_G0", /* name */
993 FALSE, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 TRUE), /* pcrel_offset */
997
998 HOWTO (R_ARM_LDRS_PC_G1, /* type */
999 0, /* rightshift */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 32, /* bitsize */
1002 TRUE, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_dont,/* complain_on_overflow */
1005 bfd_elf_generic_reloc, /* special_function */
1006 "R_ARM_LDRS_PC_G1", /* name */
1007 FALSE, /* partial_inplace */
1008 0xffffffff, /* src_mask */
1009 0xffffffff, /* dst_mask */
1010 TRUE), /* pcrel_offset */
1011
1012 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1013 0, /* rightshift */
1014 2, /* size (0 = byte, 1 = short, 2 = long) */
1015 32, /* bitsize */
1016 TRUE, /* pc_relative */
1017 0, /* bitpos */
1018 complain_overflow_dont,/* complain_on_overflow */
1019 bfd_elf_generic_reloc, /* special_function */
1020 "R_ARM_LDRS_PC_G2", /* name */
1021 FALSE, /* partial_inplace */
1022 0xffffffff, /* src_mask */
1023 0xffffffff, /* dst_mask */
1024 TRUE), /* pcrel_offset */
1025
1026 HOWTO (R_ARM_LDC_PC_G0, /* type */
1027 0, /* rightshift */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1029 32, /* bitsize */
1030 TRUE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont,/* complain_on_overflow */
1033 bfd_elf_generic_reloc, /* special_function */
1034 "R_ARM_LDC_PC_G0", /* name */
1035 FALSE, /* partial_inplace */
1036 0xffffffff, /* src_mask */
1037 0xffffffff, /* dst_mask */
1038 TRUE), /* pcrel_offset */
1039
1040 HOWTO (R_ARM_LDC_PC_G1, /* type */
1041 0, /* rightshift */
1042 2, /* size (0 = byte, 1 = short, 2 = long) */
1043 32, /* bitsize */
1044 TRUE, /* pc_relative */
1045 0, /* bitpos */
1046 complain_overflow_dont,/* complain_on_overflow */
1047 bfd_elf_generic_reloc, /* special_function */
1048 "R_ARM_LDC_PC_G1", /* name */
1049 FALSE, /* partial_inplace */
1050 0xffffffff, /* src_mask */
1051 0xffffffff, /* dst_mask */
1052 TRUE), /* pcrel_offset */
1053
1054 HOWTO (R_ARM_LDC_PC_G2, /* type */
1055 0, /* rightshift */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1057 32, /* bitsize */
1058 TRUE, /* pc_relative */
1059 0, /* bitpos */
1060 complain_overflow_dont,/* complain_on_overflow */
1061 bfd_elf_generic_reloc, /* special_function */
1062 "R_ARM_LDC_PC_G2", /* name */
1063 FALSE, /* partial_inplace */
1064 0xffffffff, /* src_mask */
1065 0xffffffff, /* dst_mask */
1066 TRUE), /* pcrel_offset */
1067
1068 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1069 0, /* rightshift */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1071 32, /* bitsize */
1072 TRUE, /* pc_relative */
1073 0, /* bitpos */
1074 complain_overflow_dont,/* complain_on_overflow */
1075 bfd_elf_generic_reloc, /* special_function */
1076 "R_ARM_ALU_SB_G0_NC", /* name */
1077 FALSE, /* partial_inplace */
1078 0xffffffff, /* src_mask */
1079 0xffffffff, /* dst_mask */
1080 TRUE), /* pcrel_offset */
1081
1082 HOWTO (R_ARM_ALU_SB_G0, /* type */
1083 0, /* rightshift */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1085 32, /* bitsize */
1086 TRUE, /* pc_relative */
1087 0, /* bitpos */
1088 complain_overflow_dont,/* complain_on_overflow */
1089 bfd_elf_generic_reloc, /* special_function */
1090 "R_ARM_ALU_SB_G0", /* name */
1091 FALSE, /* partial_inplace */
1092 0xffffffff, /* src_mask */
1093 0xffffffff, /* dst_mask */
1094 TRUE), /* pcrel_offset */
1095
1096 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1097 0, /* rightshift */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 32, /* bitsize */
1100 TRUE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_dont,/* complain_on_overflow */
1103 bfd_elf_generic_reloc, /* special_function */
1104 "R_ARM_ALU_SB_G1_NC", /* name */
1105 FALSE, /* partial_inplace */
1106 0xffffffff, /* src_mask */
1107 0xffffffff, /* dst_mask */
1108 TRUE), /* pcrel_offset */
1109
1110 HOWTO (R_ARM_ALU_SB_G1, /* type */
1111 0, /* rightshift */
1112 2, /* size (0 = byte, 1 = short, 2 = long) */
1113 32, /* bitsize */
1114 TRUE, /* pc_relative */
1115 0, /* bitpos */
1116 complain_overflow_dont,/* complain_on_overflow */
1117 bfd_elf_generic_reloc, /* special_function */
1118 "R_ARM_ALU_SB_G1", /* name */
1119 FALSE, /* partial_inplace */
1120 0xffffffff, /* src_mask */
1121 0xffffffff, /* dst_mask */
1122 TRUE), /* pcrel_offset */
1123
1124 HOWTO (R_ARM_ALU_SB_G2, /* type */
1125 0, /* rightshift */
1126 2, /* size (0 = byte, 1 = short, 2 = long) */
1127 32, /* bitsize */
1128 TRUE, /* pc_relative */
1129 0, /* bitpos */
1130 complain_overflow_dont,/* complain_on_overflow */
1131 bfd_elf_generic_reloc, /* special_function */
1132 "R_ARM_ALU_SB_G2", /* name */
1133 FALSE, /* partial_inplace */
1134 0xffffffff, /* src_mask */
1135 0xffffffff, /* dst_mask */
1136 TRUE), /* pcrel_offset */
1137
1138 HOWTO (R_ARM_LDR_SB_G0, /* type */
1139 0, /* rightshift */
1140 2, /* size (0 = byte, 1 = short, 2 = long) */
1141 32, /* bitsize */
1142 TRUE, /* pc_relative */
1143 0, /* bitpos */
1144 complain_overflow_dont,/* complain_on_overflow */
1145 bfd_elf_generic_reloc, /* special_function */
1146 "R_ARM_LDR_SB_G0", /* name */
1147 FALSE, /* partial_inplace */
1148 0xffffffff, /* src_mask */
1149 0xffffffff, /* dst_mask */
1150 TRUE), /* pcrel_offset */
1151
1152 HOWTO (R_ARM_LDR_SB_G1, /* type */
1153 0, /* rightshift */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1155 32, /* bitsize */
1156 TRUE, /* pc_relative */
1157 0, /* bitpos */
1158 complain_overflow_dont,/* complain_on_overflow */
1159 bfd_elf_generic_reloc, /* special_function */
1160 "R_ARM_LDR_SB_G1", /* name */
1161 FALSE, /* partial_inplace */
1162 0xffffffff, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 TRUE), /* pcrel_offset */
1165
1166 HOWTO (R_ARM_LDR_SB_G2, /* type */
1167 0, /* rightshift */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1169 32, /* bitsize */
1170 TRUE, /* pc_relative */
1171 0, /* bitpos */
1172 complain_overflow_dont,/* complain_on_overflow */
1173 bfd_elf_generic_reloc, /* special_function */
1174 "R_ARM_LDR_SB_G2", /* name */
1175 FALSE, /* partial_inplace */
1176 0xffffffff, /* src_mask */
1177 0xffffffff, /* dst_mask */
1178 TRUE), /* pcrel_offset */
1179
1180 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1181 0, /* rightshift */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1183 32, /* bitsize */
1184 TRUE, /* pc_relative */
1185 0, /* bitpos */
1186 complain_overflow_dont,/* complain_on_overflow */
1187 bfd_elf_generic_reloc, /* special_function */
1188 "R_ARM_LDRS_SB_G0", /* name */
1189 FALSE, /* partial_inplace */
1190 0xffffffff, /* src_mask */
1191 0xffffffff, /* dst_mask */
1192 TRUE), /* pcrel_offset */
1193
1194 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1195 0, /* rightshift */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1197 32, /* bitsize */
1198 TRUE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_dont,/* complain_on_overflow */
1201 bfd_elf_generic_reloc, /* special_function */
1202 "R_ARM_LDRS_SB_G1", /* name */
1203 FALSE, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 TRUE), /* pcrel_offset */
1207
1208 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1209 0, /* rightshift */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1211 32, /* bitsize */
1212 TRUE, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_dont,/* complain_on_overflow */
1215 bfd_elf_generic_reloc, /* special_function */
1216 "R_ARM_LDRS_SB_G2", /* name */
1217 FALSE, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 TRUE), /* pcrel_offset */
1221
1222 HOWTO (R_ARM_LDC_SB_G0, /* type */
1223 0, /* rightshift */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1225 32, /* bitsize */
1226 TRUE, /* pc_relative */
1227 0, /* bitpos */
1228 complain_overflow_dont,/* complain_on_overflow */
1229 bfd_elf_generic_reloc, /* special_function */
1230 "R_ARM_LDC_SB_G0", /* name */
1231 FALSE, /* partial_inplace */
1232 0xffffffff, /* src_mask */
1233 0xffffffff, /* dst_mask */
1234 TRUE), /* pcrel_offset */
1235
1236 HOWTO (R_ARM_LDC_SB_G1, /* type */
1237 0, /* rightshift */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 32, /* bitsize */
1240 TRUE, /* pc_relative */
1241 0, /* bitpos */
1242 complain_overflow_dont,/* complain_on_overflow */
1243 bfd_elf_generic_reloc, /* special_function */
1244 "R_ARM_LDC_SB_G1", /* name */
1245 FALSE, /* partial_inplace */
1246 0xffffffff, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 TRUE), /* pcrel_offset */
1249
1250 HOWTO (R_ARM_LDC_SB_G2, /* type */
1251 0, /* rightshift */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1253 32, /* bitsize */
1254 TRUE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_dont,/* complain_on_overflow */
1257 bfd_elf_generic_reloc, /* special_function */
1258 "R_ARM_LDC_SB_G2", /* name */
1259 FALSE, /* partial_inplace */
1260 0xffffffff, /* src_mask */
1261 0xffffffff, /* dst_mask */
1262 TRUE), /* pcrel_offset */
1263
1264 /* End of group relocations. */
c19d1205 1265
c19d1205
ZW
1266 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1267 0, /* rightshift */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 16, /* bitsize */
1270 FALSE, /* pc_relative */
1271 0, /* bitpos */
1272 complain_overflow_dont,/* complain_on_overflow */
1273 bfd_elf_generic_reloc, /* special_function */
1274 "R_ARM_MOVW_BREL_NC", /* name */
1275 FALSE, /* partial_inplace */
1276 0x0000ffff, /* src_mask */
1277 0x0000ffff, /* dst_mask */
1278 FALSE), /* pcrel_offset */
1279
1280 HOWTO (R_ARM_MOVT_BREL, /* type */
1281 0, /* rightshift */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_bitfield,/* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_ARM_MOVT_BREL", /* name */
1289 FALSE, /* partial_inplace */
1290 0x0000ffff, /* src_mask */
1291 0x0000ffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 HOWTO (R_ARM_MOVW_BREL, /* type */
1295 0, /* rightshift */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 16, /* bitsize */
1298 FALSE, /* pc_relative */
1299 0, /* bitpos */
1300 complain_overflow_dont,/* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_ARM_MOVW_BREL", /* name */
1303 FALSE, /* partial_inplace */
1304 0x0000ffff, /* src_mask */
1305 0x0000ffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1307
1308 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1309 0, /* rightshift */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 16, /* bitsize */
1312 FALSE, /* pc_relative */
1313 0, /* bitpos */
1314 complain_overflow_dont,/* complain_on_overflow */
1315 bfd_elf_generic_reloc, /* special_function */
1316 "R_ARM_THM_MOVW_BREL_NC",/* name */
1317 FALSE, /* partial_inplace */
1318 0x040f70ff, /* src_mask */
1319 0x040f70ff, /* dst_mask */
1320 FALSE), /* pcrel_offset */
1321
1322 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1323 0, /* rightshift */
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 16, /* bitsize */
1326 FALSE, /* pc_relative */
1327 0, /* bitpos */
1328 complain_overflow_bitfield,/* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_ARM_THM_MOVT_BREL", /* name */
1331 FALSE, /* partial_inplace */
1332 0x040f70ff, /* src_mask */
1333 0x040f70ff, /* dst_mask */
1334 FALSE), /* pcrel_offset */
1335
1336 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1337 0, /* rightshift */
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1339 16, /* bitsize */
1340 FALSE, /* pc_relative */
1341 0, /* bitpos */
1342 complain_overflow_dont,/* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_ARM_THM_MOVW_BREL", /* name */
1345 FALSE, /* partial_inplace */
1346 0x040f70ff, /* src_mask */
1347 0x040f70ff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1349
8029a119 1350 EMPTY_HOWTO (90), /* Unallocated. */
c19d1205
ZW
1351 EMPTY_HOWTO (91),
1352 EMPTY_HOWTO (92),
1353 EMPTY_HOWTO (93),
1354
1355 HOWTO (R_ARM_PLT32_ABS, /* type */
1356 0, /* rightshift */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1358 32, /* bitsize */
1359 FALSE, /* pc_relative */
1360 0, /* bitpos */
1361 complain_overflow_dont,/* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 "R_ARM_PLT32_ABS", /* name */
1364 FALSE, /* partial_inplace */
1365 0xffffffff, /* src_mask */
1366 0xffffffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1368
1369 HOWTO (R_ARM_GOT_ABS, /* type */
1370 0, /* rightshift */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1372 32, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_dont,/* complain_on_overflow */
1376 bfd_elf_generic_reloc, /* special_function */
1377 "R_ARM_GOT_ABS", /* name */
1378 FALSE, /* partial_inplace */
1379 0xffffffff, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 HOWTO (R_ARM_GOT_PREL, /* type */
1384 0, /* rightshift */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1386 32, /* bitsize */
1387 TRUE, /* pc_relative */
1388 0, /* bitpos */
1389 complain_overflow_dont, /* complain_on_overflow */
1390 bfd_elf_generic_reloc, /* special_function */
1391 "R_ARM_GOT_PREL", /* name */
1392 FALSE, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 TRUE), /* pcrel_offset */
1396
1397 HOWTO (R_ARM_GOT_BREL12, /* type */
1398 0, /* rightshift */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1400 12, /* bitsize */
1401 FALSE, /* pc_relative */
1402 0, /* bitpos */
1403 complain_overflow_bitfield,/* complain_on_overflow */
1404 bfd_elf_generic_reloc, /* special_function */
1405 "R_ARM_GOT_BREL12", /* name */
1406 FALSE, /* partial_inplace */
1407 0x00000fff, /* src_mask */
1408 0x00000fff, /* dst_mask */
1409 FALSE), /* pcrel_offset */
1410
1411 HOWTO (R_ARM_GOTOFF12, /* type */
1412 0, /* rightshift */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1414 12, /* bitsize */
1415 FALSE, /* pc_relative */
1416 0, /* bitpos */
1417 complain_overflow_bitfield,/* complain_on_overflow */
1418 bfd_elf_generic_reloc, /* special_function */
1419 "R_ARM_GOTOFF12", /* name */
1420 FALSE, /* partial_inplace */
1421 0x00000fff, /* src_mask */
1422 0x00000fff, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424
1425 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1426
1427 /* GNU extension to record C++ vtable member usage */
1428 HOWTO (R_ARM_GNU_VTENTRY, /* type */
ba93b8ac
DJ
1429 0, /* rightshift */
1430 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1431 0, /* bitsize */
ba93b8ac
DJ
1432 FALSE, /* pc_relative */
1433 0, /* bitpos */
c19d1205
ZW
1434 complain_overflow_dont, /* complain_on_overflow */
1435 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1436 "R_ARM_GNU_VTENTRY", /* name */
1437 FALSE, /* partial_inplace */
1438 0, /* src_mask */
1439 0, /* dst_mask */
1440 FALSE), /* pcrel_offset */
1441
1442 /* GNU extension to record C++ vtable hierarchy */
1443 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1444 0, /* rightshift */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1446 0, /* bitsize */
1447 FALSE, /* pc_relative */
1448 0, /* bitpos */
1449 complain_overflow_dont, /* complain_on_overflow */
1450 NULL, /* special_function */
1451 "R_ARM_GNU_VTINHERIT", /* name */
1452 FALSE, /* partial_inplace */
1453 0, /* src_mask */
1454 0, /* dst_mask */
1455 FALSE), /* pcrel_offset */
1456
1457 HOWTO (R_ARM_THM_JUMP11, /* type */
1458 1, /* rightshift */
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1460 11, /* bitsize */
1461 TRUE, /* pc_relative */
1462 0, /* bitpos */
1463 complain_overflow_signed, /* complain_on_overflow */
1464 bfd_elf_generic_reloc, /* special_function */
1465 "R_ARM_THM_JUMP11", /* name */
1466 FALSE, /* partial_inplace */
1467 0x000007ff, /* src_mask */
1468 0x000007ff, /* dst_mask */
1469 TRUE), /* pcrel_offset */
1470
1471 HOWTO (R_ARM_THM_JUMP8, /* type */
1472 1, /* rightshift */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 8, /* bitsize */
1475 TRUE, /* pc_relative */
1476 0, /* bitpos */
1477 complain_overflow_signed, /* complain_on_overflow */
1478 bfd_elf_generic_reloc, /* special_function */
1479 "R_ARM_THM_JUMP8", /* name */
1480 FALSE, /* partial_inplace */
1481 0x000000ff, /* src_mask */
1482 0x000000ff, /* dst_mask */
1483 TRUE), /* pcrel_offset */
ba93b8ac 1484
c19d1205
ZW
1485 /* TLS relocations */
1486 HOWTO (R_ARM_TLS_GD32, /* type */
ba93b8ac
DJ
1487 0, /* rightshift */
1488 2, /* size (0 = byte, 1 = short, 2 = long) */
1489 32, /* bitsize */
1490 FALSE, /* pc_relative */
1491 0, /* bitpos */
1492 complain_overflow_bitfield,/* complain_on_overflow */
c19d1205
ZW
1493 NULL, /* special_function */
1494 "R_ARM_TLS_GD32", /* name */
ba93b8ac
DJ
1495 TRUE, /* partial_inplace */
1496 0xffffffff, /* src_mask */
1497 0xffffffff, /* dst_mask */
c19d1205 1498 FALSE), /* pcrel_offset */
ba93b8ac 1499
ba93b8ac
DJ
1500 HOWTO (R_ARM_TLS_LDM32, /* type */
1501 0, /* rightshift */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1503 32, /* bitsize */
1504 FALSE, /* pc_relative */
1505 0, /* bitpos */
1506 complain_overflow_bitfield,/* complain_on_overflow */
1507 bfd_elf_generic_reloc, /* special_function */
1508 "R_ARM_TLS_LDM32", /* name */
1509 TRUE, /* partial_inplace */
1510 0xffffffff, /* src_mask */
1511 0xffffffff, /* dst_mask */
c19d1205 1512 FALSE), /* pcrel_offset */
ba93b8ac 1513
c19d1205 1514 HOWTO (R_ARM_TLS_LDO32, /* type */
ba93b8ac
DJ
1515 0, /* rightshift */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 32, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_bitfield,/* complain_on_overflow */
1521 bfd_elf_generic_reloc, /* special_function */
c19d1205 1522 "R_ARM_TLS_LDO32", /* name */
ba93b8ac
DJ
1523 TRUE, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
c19d1205 1526 FALSE), /* pcrel_offset */
ba93b8ac 1527
ba93b8ac
DJ
1528 HOWTO (R_ARM_TLS_IE32, /* type */
1529 0, /* rightshift */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1531 32, /* bitsize */
1532 FALSE, /* pc_relative */
1533 0, /* bitpos */
1534 complain_overflow_bitfield,/* complain_on_overflow */
1535 NULL, /* special_function */
1536 "R_ARM_TLS_IE32", /* name */
1537 TRUE, /* partial_inplace */
1538 0xffffffff, /* src_mask */
1539 0xffffffff, /* dst_mask */
c19d1205 1540 FALSE), /* pcrel_offset */
7f266840 1541
c19d1205 1542 HOWTO (R_ARM_TLS_LE32, /* type */
7f266840
DJ
1543 0, /* rightshift */
1544 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1545 32, /* bitsize */
7f266840
DJ
1546 FALSE, /* pc_relative */
1547 0, /* bitpos */
c19d1205
ZW
1548 complain_overflow_bitfield,/* complain_on_overflow */
1549 bfd_elf_generic_reloc, /* special_function */
1550 "R_ARM_TLS_LE32", /* name */
1551 TRUE, /* partial_inplace */
1552 0xffffffff, /* src_mask */
1553 0xffffffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
7f266840 1555
c19d1205
ZW
1556 HOWTO (R_ARM_TLS_LDO12, /* type */
1557 0, /* rightshift */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 12, /* bitsize */
1560 FALSE, /* pc_relative */
7f266840 1561 0, /* bitpos */
c19d1205 1562 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1563 bfd_elf_generic_reloc, /* special_function */
c19d1205 1564 "R_ARM_TLS_LDO12", /* name */
7f266840 1565 FALSE, /* partial_inplace */
c19d1205
ZW
1566 0x00000fff, /* src_mask */
1567 0x00000fff, /* dst_mask */
1568 FALSE), /* pcrel_offset */
7f266840 1569
c19d1205
ZW
1570 HOWTO (R_ARM_TLS_LE12, /* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 12, /* bitsize */
1574 FALSE, /* pc_relative */
7f266840 1575 0, /* bitpos */
c19d1205 1576 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1577 bfd_elf_generic_reloc, /* special_function */
c19d1205 1578 "R_ARM_TLS_LE12", /* name */
7f266840 1579 FALSE, /* partial_inplace */
c19d1205
ZW
1580 0x00000fff, /* src_mask */
1581 0x00000fff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
7f266840 1583
c19d1205 1584 HOWTO (R_ARM_TLS_IE12GP, /* type */
7f266840
DJ
1585 0, /* rightshift */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW
1587 12, /* bitsize */
1588 FALSE, /* pc_relative */
7f266840 1589 0, /* bitpos */
c19d1205 1590 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1591 bfd_elf_generic_reloc, /* special_function */
c19d1205 1592 "R_ARM_TLS_IE12GP", /* name */
7f266840 1593 FALSE, /* partial_inplace */
c19d1205
ZW
1594 0x00000fff, /* src_mask */
1595 0x00000fff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597};
1598
1599/* 112-127 private relocations
1600 128 R_ARM_ME_TOO, obsolete
1601 129-255 unallocated in AAELF.
7f266840 1602
c19d1205
ZW
1603 249-255 extended, currently unused, relocations: */
1604
4962c51a 1605static reloc_howto_type elf32_arm_howto_table_2[4] =
7f266840
DJ
1606{
1607 HOWTO (R_ARM_RREL32, /* type */
1608 0, /* rightshift */
1609 0, /* size (0 = byte, 1 = short, 2 = long) */
1610 0, /* bitsize */
1611 FALSE, /* pc_relative */
1612 0, /* bitpos */
1613 complain_overflow_dont,/* complain_on_overflow */
1614 bfd_elf_generic_reloc, /* special_function */
1615 "R_ARM_RREL32", /* name */
1616 FALSE, /* partial_inplace */
1617 0, /* src_mask */
1618 0, /* dst_mask */
1619 FALSE), /* pcrel_offset */
1620
1621 HOWTO (R_ARM_RABS32, /* type */
1622 0, /* rightshift */
1623 0, /* size (0 = byte, 1 = short, 2 = long) */
1624 0, /* bitsize */
1625 FALSE, /* pc_relative */
1626 0, /* bitpos */
1627 complain_overflow_dont,/* complain_on_overflow */
1628 bfd_elf_generic_reloc, /* special_function */
1629 "R_ARM_RABS32", /* name */
1630 FALSE, /* partial_inplace */
1631 0, /* src_mask */
1632 0, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1634
1635 HOWTO (R_ARM_RPC24, /* type */
1636 0, /* rightshift */
1637 0, /* size (0 = byte, 1 = short, 2 = long) */
1638 0, /* bitsize */
1639 FALSE, /* pc_relative */
1640 0, /* bitpos */
1641 complain_overflow_dont,/* complain_on_overflow */
1642 bfd_elf_generic_reloc, /* special_function */
1643 "R_ARM_RPC24", /* name */
1644 FALSE, /* partial_inplace */
1645 0, /* src_mask */
1646 0, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1648
1649 HOWTO (R_ARM_RBASE, /* type */
1650 0, /* rightshift */
1651 0, /* size (0 = byte, 1 = short, 2 = long) */
1652 0, /* bitsize */
1653 FALSE, /* pc_relative */
1654 0, /* bitpos */
1655 complain_overflow_dont,/* complain_on_overflow */
1656 bfd_elf_generic_reloc, /* special_function */
1657 "R_ARM_RBASE", /* name */
1658 FALSE, /* partial_inplace */
1659 0, /* src_mask */
1660 0, /* dst_mask */
1661 FALSE) /* pcrel_offset */
1662};
1663
1664static reloc_howto_type *
1665elf32_arm_howto_from_type (unsigned int r_type)
1666{
906e58ca 1667 if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1))
c19d1205 1668 return &elf32_arm_howto_table_1[r_type];
ba93b8ac 1669
c19d1205 1670 if (r_type >= R_ARM_RREL32
906e58ca 1671 && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_2))
4962c51a 1672 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
7f266840 1673
c19d1205 1674 return NULL;
7f266840
DJ
1675}
1676
1677static void
1678elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1679 Elf_Internal_Rela * elf_reloc)
1680{
1681 unsigned int r_type;
1682
1683 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1684 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1685}
1686
1687struct elf32_arm_reloc_map
1688 {
1689 bfd_reloc_code_real_type bfd_reloc_val;
1690 unsigned char elf_reloc_val;
1691 };
1692
1693/* All entries in this list must also be present in elf32_arm_howto_table. */
1694static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1695 {
1696 {BFD_RELOC_NONE, R_ARM_NONE},
1697 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
39b41c9c
PB
1698 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1699 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
7f266840
DJ
1700 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1701 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1702 {BFD_RELOC_32, R_ARM_ABS32},
1703 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1704 {BFD_RELOC_8, R_ARM_ABS8},
1705 {BFD_RELOC_16, R_ARM_ABS16},
1706 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1707 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
c19d1205
ZW
1708 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1709 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1710 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
7f266840
DJ
1714 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1715 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1716 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
c19d1205 1717 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
7f266840
DJ
1718 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1719 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1720 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1721 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1722 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1723 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1724 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
ba93b8ac
DJ
1725 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1726 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1727 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1728 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1729 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1730 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1731 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1732 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1733 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1734 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
c19d1205
ZW
1735 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1736 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
b6895b4f
PB
1737 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1738 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1739 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1740 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1741 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1742 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1743 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1744 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
4962c51a
MS
1745 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1746 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1747 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1748 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1749 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1750 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1751 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1752 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1753 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1754 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1755 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1756 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1757 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1758 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1759 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1760 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1761 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1762 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1763 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1764 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1765 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1766 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1767 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1768 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1769 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1770 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1771 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
845b51d6
PB
1772 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
1773 {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
7f266840
DJ
1774 };
1775
1776static reloc_howto_type *
f1c71a59
ZW
1777elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1778 bfd_reloc_code_real_type code)
7f266840
DJ
1779{
1780 unsigned int i;
8029a119 1781
906e58ca 1782 for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++)
c19d1205
ZW
1783 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1784 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
7f266840 1785
c19d1205 1786 return NULL;
7f266840
DJ
1787}
1788
157090f7
AM
1789static reloc_howto_type *
1790elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1791 const char *r_name)
1792{
1793 unsigned int i;
1794
906e58ca 1795 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++)
157090f7
AM
1796 if (elf32_arm_howto_table_1[i].name != NULL
1797 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1798 return &elf32_arm_howto_table_1[i];
1799
906e58ca 1800 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++)
157090f7
AM
1801 if (elf32_arm_howto_table_2[i].name != NULL
1802 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1803 return &elf32_arm_howto_table_2[i];
1804
1805 return NULL;
1806}
1807
906e58ca
NC
1808/* Support for core dump NOTE sections. */
1809
7f266840 1810static bfd_boolean
f1c71a59 1811elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ
1812{
1813 int offset;
1814 size_t size;
1815
1816 switch (note->descsz)
1817 {
1818 default:
1819 return FALSE;
1820
8029a119 1821 case 148: /* Linux/ARM 32-bit. */
7f266840
DJ
1822 /* pr_cursig */
1823 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1824
1825 /* pr_pid */
1826 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1827
1828 /* pr_reg */
1829 offset = 72;
1830 size = 72;
1831
1832 break;
1833 }
1834
1835 /* Make a ".reg/999" section. */
1836 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1837 size, note->descpos + offset);
1838}
1839
1840static bfd_boolean
f1c71a59 1841elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ
1842{
1843 switch (note->descsz)
1844 {
1845 default:
1846 return FALSE;
1847
8029a119 1848 case 124: /* Linux/ARM elf_prpsinfo. */
7f266840
DJ
1849 elf_tdata (abfd)->core_program
1850 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1851 elf_tdata (abfd)->core_command
1852 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1853 }
1854
1855 /* Note that for some reason, a spurious space is tacked
1856 onto the end of the args in some (at least one anyway)
1857 implementations, so strip it off if it exists. */
7f266840
DJ
1858 {
1859 char *command = elf_tdata (abfd)->core_command;
1860 int n = strlen (command);
1861
1862 if (0 < n && command[n - 1] == ' ')
1863 command[n - 1] = '\0';
1864 }
1865
1866 return TRUE;
1867}
1868
1869#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1870#define TARGET_LITTLE_NAME "elf32-littlearm"
1871#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1872#define TARGET_BIG_NAME "elf32-bigarm"
1873
1874#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1875#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1876
252b5132
RH
1877typedef unsigned long int insn32;
1878typedef unsigned short int insn16;
1879
3a4a14e9
PB
1880/* In lieu of proper flags, assume all EABIv4 or later objects are
1881 interworkable. */
57e8b36a 1882#define INTERWORK_FLAG(abfd) \
3a4a14e9 1883 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
85a84e7a 1884 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
9b485d32 1885
252b5132
RH
1886/* The linker script knows the section names for placement.
1887 The entry_names are used to do simple name mangling on the stubs.
1888 Given a function name, and its type, the stub can be found. The
9b485d32 1889 name can be changed. The only requirement is the %s be present. */
252b5132
RH
1890#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1891#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1892
1893#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1894#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1895
c7b8f16e
JB
1896#define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1897#define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1898
845b51d6
PB
1899#define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1900#define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1901
7413f23f
DJ
1902#define STUB_ENTRY_NAME "__%s_veneer"
1903
252b5132
RH
1904/* The name of the dynamic interpreter. This is put in the .interp
1905 section. */
1906#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1907
5e681ec4
PB
1908#ifdef FOUR_WORD_PLT
1909
252b5132
RH
1910/* The first entry in a procedure linkage table looks like
1911 this. It is set up so that any shared library function that is
59f2c4e7 1912 called before the relocation has been set up calls the dynamic
9b485d32 1913 linker first. */
e5a52504 1914static const bfd_vma elf32_arm_plt0_entry [] =
5e681ec4
PB
1915 {
1916 0xe52de004, /* str lr, [sp, #-4]! */
1917 0xe59fe010, /* ldr lr, [pc, #16] */
1918 0xe08fe00e, /* add lr, pc, lr */
1919 0xe5bef008, /* ldr pc, [lr, #8]! */
1920 };
1921
1922/* Subsequent entries in a procedure linkage table look like
1923 this. */
e5a52504 1924static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB
1925 {
1926 0xe28fc600, /* add ip, pc, #NN */
1927 0xe28cca00, /* add ip, ip, #NN */
1928 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1929 0x00000000, /* unused */
1930 };
1931
1932#else
1933
5e681ec4
PB
1934/* The first entry in a procedure linkage table looks like
1935 this. It is set up so that any shared library function that is
1936 called before the relocation has been set up calls the dynamic
1937 linker first. */
e5a52504 1938static const bfd_vma elf32_arm_plt0_entry [] =
917583ad 1939 {
5e681ec4
PB
1940 0xe52de004, /* str lr, [sp, #-4]! */
1941 0xe59fe004, /* ldr lr, [pc, #4] */
1942 0xe08fe00e, /* add lr, pc, lr */
1943 0xe5bef008, /* ldr pc, [lr, #8]! */
1944 0x00000000, /* &GOT[0] - . */
917583ad 1945 };
252b5132
RH
1946
1947/* Subsequent entries in a procedure linkage table look like
1948 this. */
e5a52504 1949static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB
1950 {
1951 0xe28fc600, /* add ip, pc, #0xNN00000 */
1952 0xe28cca00, /* add ip, ip, #0xNN000 */
1953 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1954 };
1955
1956#endif
252b5132 1957
00a97672
RS
1958/* The format of the first entry in the procedure linkage table
1959 for a VxWorks executable. */
1960static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1961 {
1962 0xe52dc008, /* str ip,[sp,#-8]! */
1963 0xe59fc000, /* ldr ip,[pc] */
1964 0xe59cf008, /* ldr pc,[ip,#8] */
1965 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1966 };
1967
1968/* The format of subsequent entries in a VxWorks executable. */
1969static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1970 {
1971 0xe59fc000, /* ldr ip,[pc] */
1972 0xe59cf000, /* ldr pc,[ip] */
1973 0x00000000, /* .long @got */
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xea000000, /* b _PLT */
1976 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1977 };
1978
1979/* The format of entries in a VxWorks shared library. */
1980static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1981 {
1982 0xe59fc000, /* ldr ip,[pc] */
1983 0xe79cf009, /* ldr pc,[ip,r9] */
1984 0x00000000, /* .long @got */
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe599f008, /* ldr pc,[r9,#8] */
1987 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1988 };
1989
b7693d02
DJ
1990/* An initial stub used if the PLT entry is referenced from Thumb code. */
1991#define PLT_THUMB_STUB_SIZE 4
1992static const bfd_vma elf32_arm_plt_thumb_stub [] =
1993 {
1994 0x4778, /* bx pc */
1995 0x46c0 /* nop */
1996 };
1997
e5a52504
MM
1998/* The entries in a PLT when using a DLL-based target with multiple
1999 address spaces. */
906e58ca 2000static const bfd_vma elf32_arm_symbian_plt_entry [] =
e5a52504 2001 {
83a358aa 2002 0xe51ff004, /* ldr pc, [pc, #-4] */
e5a52504
MM
2003 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2004 };
2005
906e58ca
NC
2006#define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2007#define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2008#define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2009#define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2010#define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2011#define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2012
2013static const bfd_vma arm_long_branch_stub[] =
2014 {
2015 0xe51ff004, /* ldr pc, [pc, #-4] */
2016 0x00000000, /* dcd R_ARM_ABS32(X) */
2017 };
2018
2019static const bfd_vma arm_thumb_v4t_long_branch_stub[] =
2020 {
2021 0xe59fc000, /* ldr ip, [pc, #0] */
2022 0xe12fff1c, /* bx ip */
2023 0x00000000, /* dcd R_ARM_ABS32(X) */
2024 };
2025
2026static const bfd_vma arm_thumb_thumb_long_branch_stub[] =
2027 {
2028 0x4e02b540, /* push {r6, lr} */
2029 /* ldr r6, [pc, #8] */
7413f23f
DJ
2030 0x473046fe, /* mov lr, pc */
2031 /* bx r6 */
906e58ca
NC
2032 0xbf00bd40, /* pop {r6, pc} */
2033 /* nop */
2034 0x00000000, /* dcd R_ARM_ABS32(X) */
2035 };
2036
2037static const bfd_vma arm_thumb_arm_v4t_long_branch_stub[] =
2038 {
2039 0x4e03b540, /* push {r6, lr} */
2040 /* ldr r6, [pc, #12] */
2041 0x473046fe, /* mov lr, pc */
2042 /* bx r6 */
2043 0xe8bd4040, /* pop {r6, pc} */
2044 0xe12fff1e, /* bx lr */
2045 0x00000000, /* dcd R_ARM_ABS32(X) */
2046 };
2047
c820be07
NC
2048static const bfd_vma arm_thumb_arm_v4t_short_branch_stub[] =
2049 {
2050 0x46c04778, /* bx pc */
2051 /* nop */
2052 0xea000000, /* b (X) */
2053 };
2054
906e58ca
NC
2055static const bfd_vma arm_pic_long_branch_stub[] =
2056 {
2057 0xe59fc000, /* ldr r12, [pc] */
2058 0xe08ff00c, /* add pc, pc, ip */
7413f23f 2059 0x00000000, /* dcd R_ARM_REL32(X) */
906e58ca
NC
2060 };
2061
2062/* Section name for stubs is the associated section name plus this
2063 string. */
2064#define STUB_SUFFIX ".stub"
2065
2066enum elf32_arm_stub_type
2067{
2068 arm_stub_none,
2069 arm_stub_long_branch,
2070 arm_thumb_v4t_stub_long_branch,
2071 arm_thumb_thumb_stub_long_branch,
2072 arm_thumb_arm_v4t_stub_long_branch,
c820be07 2073 arm_thumb_arm_v4t_stub_short_branch,
906e58ca
NC
2074 arm_stub_pic_long_branch,
2075};
2076
2077struct elf32_arm_stub_hash_entry
2078{
2079 /* Base hash table entry structure. */
2080 struct bfd_hash_entry root;
2081
2082 /* The stub section. */
2083 asection *stub_sec;
2084
2085 /* Offset within stub_sec of the beginning of this stub. */
2086 bfd_vma stub_offset;
2087
2088 /* Given the symbol's value and its section we can determine its final
2089 value when building the stubs (so the stub knows where to jump). */
2090 bfd_vma target_value;
2091 asection *target_section;
2092
2093 enum elf32_arm_stub_type stub_type;
2094
2095 /* The symbol table entry, if any, that this was derived from. */
2096 struct elf32_arm_link_hash_entry *h;
2097
2098 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2099 unsigned char st_type;
2100
2101 /* Where this stub is being called from, or, in the case of combined
2102 stub sections, the first input section in the group. */
2103 asection *id_sec;
7413f23f
DJ
2104
2105 /* The name for the local symbol at the start of this stub. The
2106 stub name in the hash table has to be unique; this does not, so
2107 it can be friendlier. */
2108 char *output_name;
906e58ca
NC
2109};
2110
e489d0ae
PB
2111/* Used to build a map of a section. This is required for mixed-endian
2112 code/data. */
2113
2114typedef struct elf32_elf_section_map
2115{
2116 bfd_vma vma;
2117 char type;
2118}
2119elf32_arm_section_map;
2120
c7b8f16e
JB
2121/* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2122
2123typedef enum
2124{
2125 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2126 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2127 VFP11_ERRATUM_ARM_VENEER,
2128 VFP11_ERRATUM_THUMB_VENEER
2129}
2130elf32_vfp11_erratum_type;
2131
2132typedef struct elf32_vfp11_erratum_list
2133{
2134 struct elf32_vfp11_erratum_list *next;
2135 bfd_vma vma;
2136 union
2137 {
2138 struct
2139 {
2140 struct elf32_vfp11_erratum_list *veneer;
2141 unsigned int vfp_insn;
2142 } b;
2143 struct
2144 {
2145 struct elf32_vfp11_erratum_list *branch;
2146 unsigned int id;
2147 } v;
2148 } u;
2149 elf32_vfp11_erratum_type type;
2150}
2151elf32_vfp11_erratum_list;
2152
8e3de13a 2153typedef struct _arm_elf_section_data
e489d0ae
PB
2154{
2155 struct bfd_elf_section_data elf;
8e3de13a 2156 unsigned int mapcount;
c7b8f16e 2157 unsigned int mapsize;
e489d0ae 2158 elf32_arm_section_map *map;
c7b8f16e
JB
2159 unsigned int erratumcount;
2160 elf32_vfp11_erratum_list *erratumlist;
8e3de13a
NC
2161}
2162_arm_elf_section_data;
e489d0ae
PB
2163
2164#define elf32_arm_section_data(sec) \
8e3de13a 2165 ((_arm_elf_section_data *) elf_section_data (sec))
e489d0ae 2166
ba93b8ac
DJ
2167/* The size of the thread control block. */
2168#define TCB_SIZE 8
2169
0ffa91dd 2170struct elf_arm_obj_tdata
ba93b8ac
DJ
2171{
2172 struct elf_obj_tdata root;
2173
2174 /* tls_type for each local got entry. */
2175 char *local_got_tls_type;
ee065d83 2176
bf21ed78
MS
2177 /* Zero to warn when linking objects with incompatible enum sizes. */
2178 int no_enum_size_warning;
a9dc9481
JM
2179
2180 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2181 int no_wchar_size_warning;
ba93b8ac
DJ
2182};
2183
0ffa91dd
NC
2184#define elf_arm_tdata(bfd) \
2185 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
ba93b8ac 2186
0ffa91dd
NC
2187#define elf32_arm_local_got_tls_type(bfd) \
2188 (elf_arm_tdata (bfd)->local_got_tls_type)
2189
2190#define is_arm_elf(bfd) \
2191 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2192 && elf_tdata (bfd) != NULL \
2193 && elf_object_id (bfd) == ARM_ELF_TDATA)
ba93b8ac
DJ
2194
2195static bfd_boolean
2196elf32_arm_mkobject (bfd *abfd)
2197{
0ffa91dd
NC
2198 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2199 ARM_ELF_TDATA);
ba93b8ac
DJ
2200}
2201
252b5132
RH
2202/* The ARM linker needs to keep track of the number of relocs that it
2203 decides to copy in check_relocs for each symbol. This is so that
2204 it can discard PC relative relocs if it doesn't need them when
2205 linking with -Bsymbolic. We store the information in a field
2206 extending the regular ELF linker hash table. */
2207
ba93b8ac
DJ
2208/* This structure keeps track of the number of relocs we have copied
2209 for a given symbol. */
5e681ec4 2210struct elf32_arm_relocs_copied
917583ad
NC
2211 {
2212 /* Next section. */
5e681ec4 2213 struct elf32_arm_relocs_copied * next;
917583ad
NC
2214 /* A section in dynobj. */
2215 asection * section;
2216 /* Number of relocs copied in this section. */
2217 bfd_size_type count;
ba93b8ac
DJ
2218 /* Number of PC-relative relocs copied in this section. */
2219 bfd_size_type pc_count;
917583ad 2220 };
252b5132 2221
ba93b8ac
DJ
2222#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2223
ba96a88f 2224/* Arm ELF linker hash entry. */
252b5132 2225struct elf32_arm_link_hash_entry
917583ad
NC
2226 {
2227 struct elf_link_hash_entry root;
252b5132 2228
917583ad 2229 /* Number of PC relative relocs copied for this symbol. */
5e681ec4 2230 struct elf32_arm_relocs_copied * relocs_copied;
b7693d02
DJ
2231
2232 /* We reference count Thumb references to a PLT entry separately,
2233 so that we can emit the Thumb trampoline only if needed. */
2234 bfd_signed_vma plt_thumb_refcount;
2235
bd97cb95
DJ
2236 /* Some references from Thumb code may be eliminated by BL->BLX
2237 conversion, so record them separately. */
2238 bfd_signed_vma plt_maybe_thumb_refcount;
2239
b7693d02
DJ
2240 /* Since PLT entries have variable size if the Thumb prologue is
2241 used, we need to record the index into .got.plt instead of
2242 recomputing it from the PLT offset. */
2243 bfd_signed_vma plt_got_offset;
ba93b8ac
DJ
2244
2245#define GOT_UNKNOWN 0
2246#define GOT_NORMAL 1
2247#define GOT_TLS_GD 2
2248#define GOT_TLS_IE 4
2249 unsigned char tls_type;
a4fd1a8e
PB
2250
2251 /* The symbol marking the real symbol location for exported thumb
2252 symbols with Arm stubs. */
2253 struct elf_link_hash_entry *export_glue;
906e58ca 2254
da5938a2 2255 /* A pointer to the most recently used stub hash entry against this
8029a119 2256 symbol. */
da5938a2 2257 struct elf32_arm_stub_hash_entry *stub_cache;
917583ad 2258 };
252b5132 2259
252b5132 2260/* Traverse an arm ELF linker hash table. */
252b5132
RH
2261#define elf32_arm_link_hash_traverse(table, func, info) \
2262 (elf_link_hash_traverse \
2263 (&(table)->root, \
b7693d02 2264 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
252b5132
RH
2265 (info)))
2266
2267/* Get the ARM elf linker hash table from a link_info structure. */
2268#define elf32_arm_hash_table(info) \
2269 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2270
906e58ca
NC
2271#define arm_stub_hash_lookup(table, string, create, copy) \
2272 ((struct elf32_arm_stub_hash_entry *) \
2273 bfd_hash_lookup ((table), (string), (create), (copy)))
2274
9b485d32 2275/* ARM ELF linker hash table. */
252b5132 2276struct elf32_arm_link_hash_table
906e58ca
NC
2277{
2278 /* The main hash table. */
2279 struct elf_link_hash_table root;
252b5132 2280
906e58ca
NC
2281 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2282 bfd_size_type thumb_glue_size;
252b5132 2283
906e58ca
NC
2284 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2285 bfd_size_type arm_glue_size;
252b5132 2286
906e58ca
NC
2287 /* The size in bytes of section containing the ARMv4 BX veneers. */
2288 bfd_size_type bx_glue_size;
845b51d6 2289
906e58ca
NC
2290 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2291 veneer has been populated. */
2292 bfd_vma bx_glue_offset[15];
845b51d6 2293
906e58ca
NC
2294 /* The size in bytes of the section containing glue for VFP11 erratum
2295 veneers. */
2296 bfd_size_type vfp11_erratum_glue_size;
c7b8f16e 2297
906e58ca
NC
2298 /* An arbitrary input BFD chosen to hold the glue sections. */
2299 bfd * bfd_of_glue_owner;
ba96a88f 2300
906e58ca
NC
2301 /* Nonzero to output a BE8 image. */
2302 int byteswap_code;
e489d0ae 2303
906e58ca
NC
2304 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2305 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2306 int target1_is_rel;
9c504268 2307
906e58ca
NC
2308 /* The relocation to use for R_ARM_TARGET2 relocations. */
2309 int target2_reloc;
eb043451 2310
906e58ca
NC
2311 /* 0 = Ignore R_ARM_V4BX.
2312 1 = Convert BX to MOV PC.
2313 2 = Generate v4 interworing stubs. */
2314 int fix_v4bx;
319850b4 2315
906e58ca
NC
2316 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2317 int use_blx;
33bfe774 2318
906e58ca
NC
2319 /* What sort of code sequences we should look for which may trigger the
2320 VFP11 denorm erratum. */
2321 bfd_arm_vfp11_fix vfp11_fix;
c7b8f16e 2322
906e58ca
NC
2323 /* Global counter for the number of fixes we have emitted. */
2324 int num_vfp11_fixes;
c7b8f16e 2325
906e58ca
NC
2326 /* Nonzero to force PIC branch veneers. */
2327 int pic_veneer;
27e55c4d 2328
906e58ca
NC
2329 /* The number of bytes in the initial entry in the PLT. */
2330 bfd_size_type plt_header_size;
e5a52504 2331
906e58ca
NC
2332 /* The number of bytes in the subsequent PLT etries. */
2333 bfd_size_type plt_entry_size;
e5a52504 2334
906e58ca
NC
2335 /* True if the target system is VxWorks. */
2336 int vxworks_p;
00a97672 2337
906e58ca
NC
2338 /* True if the target system is Symbian OS. */
2339 int symbian_p;
e5a52504 2340
906e58ca
NC
2341 /* True if the target uses REL relocations. */
2342 int use_rel;
4e7fd91e 2343
906e58ca
NC
2344 /* Short-cuts to get to dynamic linker sections. */
2345 asection *sgot;
2346 asection *sgotplt;
2347 asection *srelgot;
2348 asection *splt;
2349 asection *srelplt;
2350 asection *sdynbss;
2351 asection *srelbss;
5e681ec4 2352
906e58ca
NC
2353 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2354 asection *srelplt2;
00a97672 2355
906e58ca
NC
2356 /* Data for R_ARM_TLS_LDM32 relocations. */
2357 union
2358 {
2359 bfd_signed_vma refcount;
2360 bfd_vma offset;
2361 } tls_ldm_got;
b7693d02 2362
906e58ca
NC
2363 /* Small local sym to section mapping cache. */
2364 struct sym_sec_cache sym_sec;
2365
2366 /* For convenience in allocate_dynrelocs. */
2367 bfd * obfd;
2368
2369 /* The stub hash table. */
2370 struct bfd_hash_table stub_hash_table;
2371
2372 /* Linker stub bfd. */
2373 bfd *stub_bfd;
2374
2375 /* Linker call-backs. */
2376 asection * (*add_stub_section) (const char *, asection *);
2377 void (*layout_sections_again) (void);
2378
2379 /* Array to keep track of which stub sections have been created, and
2380 information on stub grouping. */
2381 struct map_stub
2382 {
2383 /* This is the section to which stubs in the group will be
2384 attached. */
2385 asection *link_sec;
2386 /* The stub section. */
2387 asection *stub_sec;
2388 } *stub_group;
2389
2390 /* Assorted information used by elf32_arm_size_stubs. */
2391 unsigned int bfd_count;
2392 int top_index;
2393 asection **input_list;
2394};
252b5132 2395
780a67af
NC
2396/* Create an entry in an ARM ELF linker hash table. */
2397
2398static struct bfd_hash_entry *
57e8b36a
NC
2399elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2400 struct bfd_hash_table * table,
2401 const char * string)
780a67af
NC
2402{
2403 struct elf32_arm_link_hash_entry * ret =
2404 (struct elf32_arm_link_hash_entry *) entry;
2405
2406 /* Allocate the structure if it has not already been allocated by a
2407 subclass. */
906e58ca 2408 if (ret == NULL)
57e8b36a
NC
2409 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2410 if (ret == NULL)
780a67af
NC
2411 return (struct bfd_hash_entry *) ret;
2412
2413 /* Call the allocation method of the superclass. */
2414 ret = ((struct elf32_arm_link_hash_entry *)
2415 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2416 table, string));
57e8b36a 2417 if (ret != NULL)
b7693d02
DJ
2418 {
2419 ret->relocs_copied = NULL;
ba93b8ac 2420 ret->tls_type = GOT_UNKNOWN;
b7693d02 2421 ret->plt_thumb_refcount = 0;
bd97cb95 2422 ret->plt_maybe_thumb_refcount = 0;
b7693d02 2423 ret->plt_got_offset = -1;
a4fd1a8e 2424 ret->export_glue = NULL;
906e58ca
NC
2425
2426 ret->stub_cache = NULL;
b7693d02 2427 }
780a67af
NC
2428
2429 return (struct bfd_hash_entry *) ret;
2430}
2431
906e58ca
NC
2432/* Initialize an entry in the stub hash table. */
2433
2434static struct bfd_hash_entry *
2435stub_hash_newfunc (struct bfd_hash_entry *entry,
2436 struct bfd_hash_table *table,
2437 const char *string)
2438{
2439 /* Allocate the structure if it has not already been allocated by a
2440 subclass. */
2441 if (entry == NULL)
2442 {
2443 entry = bfd_hash_allocate (table,
2444 sizeof (struct elf32_arm_stub_hash_entry));
2445 if (entry == NULL)
2446 return entry;
2447 }
2448
2449 /* Call the allocation method of the superclass. */
2450 entry = bfd_hash_newfunc (entry, table, string);
2451 if (entry != NULL)
2452 {
2453 struct elf32_arm_stub_hash_entry *eh;
2454
2455 /* Initialize the local fields. */
2456 eh = (struct elf32_arm_stub_hash_entry *) entry;
2457 eh->stub_sec = NULL;
2458 eh->stub_offset = 0;
2459 eh->target_value = 0;
2460 eh->target_section = NULL;
2461 eh->stub_type = arm_stub_none;
2462 eh->h = NULL;
2463 eh->id_sec = NULL;
2464 }
2465
2466 return entry;
2467}
2468
00a97672 2469/* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
5e681ec4
PB
2470 shortcuts to them in our hash table. */
2471
2472static bfd_boolean
57e8b36a 2473create_got_section (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB
2474{
2475 struct elf32_arm_link_hash_table *htab;
2476
e5a52504
MM
2477 htab = elf32_arm_hash_table (info);
2478 /* BPABI objects never have a GOT, or associated sections. */
2479 if (htab->symbian_p)
2480 return TRUE;
2481
5e681ec4
PB
2482 if (! _bfd_elf_create_got_section (dynobj, info))
2483 return FALSE;
2484
5e681ec4
PB
2485 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2486 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2487 if (!htab->sgot || !htab->sgotplt)
2488 abort ();
2489
00a97672
RS
2490 htab->srelgot = bfd_make_section_with_flags (dynobj,
2491 RELOC_SECTION (htab, ".got"),
3496cb2a
L
2492 (SEC_ALLOC | SEC_LOAD
2493 | SEC_HAS_CONTENTS
2494 | SEC_IN_MEMORY
2495 | SEC_LINKER_CREATED
2496 | SEC_READONLY));
5e681ec4 2497 if (htab->srelgot == NULL
5e681ec4
PB
2498 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2499 return FALSE;
2500 return TRUE;
2501}
2502
00a97672
RS
2503/* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2504 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
5e681ec4
PB
2505 hash table. */
2506
2507static bfd_boolean
57e8b36a 2508elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB
2509{
2510 struct elf32_arm_link_hash_table *htab;
2511
2512 htab = elf32_arm_hash_table (info);
2513 if (!htab->sgot && !create_got_section (dynobj, info))
2514 return FALSE;
2515
2516 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2517 return FALSE;
2518
2519 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672
RS
2520 htab->srelplt = bfd_get_section_by_name (dynobj,
2521 RELOC_SECTION (htab, ".plt"));
5e681ec4
PB
2522 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2523 if (!info->shared)
00a97672
RS
2524 htab->srelbss = bfd_get_section_by_name (dynobj,
2525 RELOC_SECTION (htab, ".bss"));
2526
2527 if (htab->vxworks_p)
2528 {
2529 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2530 return FALSE;
2531
2532 if (info->shared)
2533 {
2534 htab->plt_header_size = 0;
2535 htab->plt_entry_size
2536 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2537 }
2538 else
2539 {
2540 htab->plt_header_size
2541 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2542 htab->plt_entry_size
2543 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2544 }
2545 }
5e681ec4 2546
906e58ca 2547 if (!htab->splt
e5a52504
MM
2548 || !htab->srelplt
2549 || !htab->sdynbss
5e681ec4
PB
2550 || (!info->shared && !htab->srelbss))
2551 abort ();
2552
2553 return TRUE;
2554}
2555
906e58ca
NC
2556/* Copy the extra info we tack onto an elf_link_hash_entry. */
2557
2558static void
2559elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2560 struct elf_link_hash_entry *dir,
2561 struct elf_link_hash_entry *ind)
2562{
2563 struct elf32_arm_link_hash_entry *edir, *eind;
2564
2565 edir = (struct elf32_arm_link_hash_entry *) dir;
2566 eind = (struct elf32_arm_link_hash_entry *) ind;
2567
2568 if (eind->relocs_copied != NULL)
2569 {
2570 if (edir->relocs_copied != NULL)
2571 {
2572 struct elf32_arm_relocs_copied **pp;
2573 struct elf32_arm_relocs_copied *p;
2574
2575 /* Add reloc counts against the indirect sym to the direct sym
2576 list. Merge any entries against the same section. */
2577 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2578 {
2579 struct elf32_arm_relocs_copied *q;
2580
2581 for (q = edir->relocs_copied; q != NULL; q = q->next)
2582 if (q->section == p->section)
2583 {
2584 q->pc_count += p->pc_count;
2585 q->count += p->count;
2586 *pp = p->next;
2587 break;
2588 }
2589 if (q == NULL)
2590 pp = &p->next;
2591 }
2592 *pp = edir->relocs_copied;
2593 }
2594
2595 edir->relocs_copied = eind->relocs_copied;
2596 eind->relocs_copied = NULL;
2597 }
2598
2599 if (ind->root.type == bfd_link_hash_indirect)
2600 {
2601 /* Copy over PLT info. */
2602 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2603 eind->plt_thumb_refcount = 0;
2604 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2605 eind->plt_maybe_thumb_refcount = 0;
2606
2607 if (dir->got.refcount <= 0)
2608 {
2609 edir->tls_type = eind->tls_type;
2610 eind->tls_type = GOT_UNKNOWN;
2611 }
2612 }
2613
2614 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2615}
2616
2617/* Create an ARM elf linker hash table. */
2618
2619static struct bfd_link_hash_table *
2620elf32_arm_link_hash_table_create (bfd *abfd)
2621{
2622 struct elf32_arm_link_hash_table *ret;
2623 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2624
2625 ret = bfd_malloc (amt);
2626 if (ret == NULL)
2627 return NULL;
2628
2629 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2630 elf32_arm_link_hash_newfunc,
2631 sizeof (struct elf32_arm_link_hash_entry)))
2632 {
2633 free (ret);
2634 return NULL;
2635 }
2636
2637 ret->sgot = NULL;
2638 ret->sgotplt = NULL;
2639 ret->srelgot = NULL;
2640 ret->splt = NULL;
2641 ret->srelplt = NULL;
2642 ret->sdynbss = NULL;
2643 ret->srelbss = NULL;
2644 ret->srelplt2 = NULL;
2645 ret->thumb_glue_size = 0;
2646 ret->arm_glue_size = 0;
2647 ret->bx_glue_size = 0;
2648 memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset));
2649 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2650 ret->vfp11_erratum_glue_size = 0;
2651 ret->num_vfp11_fixes = 0;
2652 ret->bfd_of_glue_owner = NULL;
2653 ret->byteswap_code = 0;
2654 ret->target1_is_rel = 0;
2655 ret->target2_reloc = R_ARM_NONE;
2656#ifdef FOUR_WORD_PLT
2657 ret->plt_header_size = 16;
2658 ret->plt_entry_size = 16;
2659#else
2660 ret->plt_header_size = 20;
2661 ret->plt_entry_size = 12;
2662#endif
2663 ret->fix_v4bx = 0;
2664 ret->use_blx = 0;
2665 ret->vxworks_p = 0;
2666 ret->symbian_p = 0;
2667 ret->use_rel = 1;
2668 ret->sym_sec.abfd = NULL;
2669 ret->obfd = abfd;
2670 ret->tls_ldm_got.refcount = 0;
6cee0a6f
L
2671 ret->stub_bfd = NULL;
2672 ret->add_stub_section = NULL;
2673 ret->layout_sections_again = NULL;
2674 ret->stub_group = NULL;
2675 ret->bfd_count = 0;
2676 ret->top_index = 0;
2677 ret->input_list = NULL;
906e58ca
NC
2678
2679 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
2680 sizeof (struct elf32_arm_stub_hash_entry)))
2681 {
2682 free (ret);
2683 return NULL;
2684 }
2685
2686 return &ret->root.root;
2687}
2688
2689/* Free the derived linker hash table. */
2690
2691static void
2692elf32_arm_hash_table_free (struct bfd_link_hash_table *hash)
2693{
2694 struct elf32_arm_link_hash_table *ret
2695 = (struct elf32_arm_link_hash_table *) hash;
2696
2697 bfd_hash_table_free (&ret->stub_hash_table);
2698 _bfd_generic_link_hash_table_free (hash);
2699}
2700
2701/* Determine if we're dealing with a Thumb only architecture. */
2702
2703static bfd_boolean
2704using_thumb_only (struct elf32_arm_link_hash_table *globals)
2705{
2706 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2707 Tag_CPU_arch);
2708 int profile;
2709
2710 if (arch != TAG_CPU_ARCH_V7)
2711 return FALSE;
2712
2713 profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2714 Tag_CPU_arch_profile);
2715
2716 return profile == 'M';
2717}
2718
2719/* Determine if we're dealing with a Thumb-2 object. */
2720
2721static bfd_boolean
2722using_thumb2 (struct elf32_arm_link_hash_table *globals)
2723{
2724 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2725 Tag_CPU_arch);
2726 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
2727}
2728
f4ac8484
DJ
2729static bfd_boolean
2730arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
2731{
2732 switch (stub_type)
2733 {
2734 case arm_thumb_thumb_stub_long_branch:
2735 case arm_thumb_arm_v4t_stub_long_branch:
c820be07 2736 case arm_thumb_arm_v4t_stub_short_branch:
f4ac8484
DJ
2737 return TRUE;
2738 case arm_stub_none:
2739 BFD_FAIL ();
2740 return FALSE;
2741 break;
2742 default:
2743 return FALSE;
2744 }
2745}
2746
906e58ca
NC
2747/* Determine the type of stub needed, if any, for a call. */
2748
2749static enum elf32_arm_stub_type
2750arm_type_of_stub (struct bfd_link_info *info,
2751 asection *input_sec,
2752 const Elf_Internal_Rela *rel,
2753 unsigned char st_type,
2754 struct elf32_arm_link_hash_entry *hash,
c820be07
NC
2755 bfd_vma destination,
2756 asection *sym_sec,
2757 bfd *input_bfd,
2758 const char *name)
906e58ca
NC
2759{
2760 bfd_vma location;
2761 bfd_signed_vma branch_offset;
2762 unsigned int r_type;
2763 struct elf32_arm_link_hash_table * globals;
2764 int thumb2;
2765 int thumb_only;
2766 enum elf32_arm_stub_type stub_type = arm_stub_none;
2767
da5938a2 2768 /* We don't know the actual type of destination in case it is of
8029a119 2769 type STT_SECTION: give up. */
da5938a2
NC
2770 if (st_type == STT_SECTION)
2771 return stub_type;
2772
906e58ca
NC
2773 globals = elf32_arm_hash_table (info);
2774
2775 thumb_only = using_thumb_only (globals);
2776
2777 thumb2 = using_thumb2 (globals);
2778
2779 /* Determine where the call point is. */
2780 location = (input_sec->output_offset
2781 + input_sec->output_section->vma
2782 + rel->r_offset);
2783
2784 branch_offset = (bfd_signed_vma)(destination - location);
2785
2786 r_type = ELF32_R_TYPE (rel->r_info);
2787
2788 /* If the call will go through a PLT entry then we do not need
2789 glue. */
329dcd78 2790 if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1)
906e58ca
NC
2791 return stub_type;
2792
2793 if (r_type == R_ARM_THM_CALL)
2794 {
2795 if ((!thumb2
2796 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
2797 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
2798 || (thumb2
2799 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
2800 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
2801 || ((st_type != STT_ARM_TFUNC) && !globals->use_blx))
2802 {
2803 if (st_type == STT_ARM_TFUNC)
2804 {
2805 /* Thumb to thumb. */
2806 if (!thumb_only)
2807 {
2808 stub_type = (info->shared | globals->pic_veneer)
2809 ? ((globals->use_blx)
2810 ? arm_stub_pic_long_branch
2811 : arm_stub_none)
2812 : (globals->use_blx)
2813 ? arm_stub_long_branch
2814 : arm_stub_none;
2815 }
2816 else
2817 {
2818 stub_type = (info->shared | globals->pic_veneer)
2819 ? arm_stub_none
2820 : (globals->use_blx)
2821 ? arm_thumb_thumb_stub_long_branch
2822 : arm_stub_none;
2823 }
2824 }
2825 else
2826 {
2827 /* Thumb to arm. */
c820be07
NC
2828 if (sym_sec != NULL
2829 && sym_sec->owner != NULL
2830 && !INTERWORK_FLAG (sym_sec->owner))
2831 {
2832 (*_bfd_error_handler)
2833 (_("%B(%s): warning: interworking not enabled.\n"
2834 " first occurrence: %B: Thumb call to ARM"),
2835 sym_sec->owner, input_bfd, name);
2836 }
2837
906e58ca
NC
2838 stub_type = (info->shared | globals->pic_veneer)
2839 ? ((globals->use_blx)
2840 ? arm_stub_pic_long_branch
2841 : arm_stub_none)
2842 : (globals->use_blx)
2843 ? arm_stub_long_branch
2844 : arm_thumb_arm_v4t_stub_long_branch;
c820be07
NC
2845
2846 /* Handle v4t short branches. */
2847 if ((stub_type == arm_thumb_arm_v4t_stub_long_branch)
2848 && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET)
2849 && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET))
2850 stub_type = arm_thumb_arm_v4t_stub_short_branch;
906e58ca
NC
2851 }
2852 }
2853 }
2854 else if (r_type == R_ARM_CALL)
2855 {
2856 if (st_type == STT_ARM_TFUNC)
2857 {
2858 /* Arm to thumb. */
c820be07
NC
2859
2860 if (sym_sec != NULL
2861 && sym_sec->owner != NULL
2862 && !INTERWORK_FLAG (sym_sec->owner))
2863 {
2864 (*_bfd_error_handler)
2865 (_("%B(%s): warning: interworking not enabled.\n"
2866 " first occurrence: %B: Thumb call to ARM"),
2867 sym_sec->owner, input_bfd, name);
2868 }
2869
2870 /* We have an extra 2-bytes reach because of
2871 the mode change (bit 24 (H) of BLX encoding). */
906e58ca
NC
2872 if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2)
2873 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)
2874 || !globals->use_blx)
2875 {
2876 stub_type = (info->shared | globals->pic_veneer)
2877 ? arm_stub_pic_long_branch
2878 : (globals->use_blx)
2879 ? arm_stub_long_branch
2880 : arm_thumb_v4t_stub_long_branch;
2881 }
2882 }
2883 else
2884 {
2885 /* Arm to arm. */
2886 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
2887 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET))
2888 {
2889 stub_type = (info->shared | globals->pic_veneer)
2890 ? arm_stub_pic_long_branch
2891 : arm_stub_long_branch;
2892 }
2893 }
2894 }
2895
2896 return stub_type;
2897}
2898
2899/* Build a name for an entry in the stub hash table. */
2900
2901static char *
2902elf32_arm_stub_name (const asection *input_section,
2903 const asection *sym_sec,
2904 const struct elf32_arm_link_hash_entry *hash,
2905 const Elf_Internal_Rela *rel)
2906{
2907 char *stub_name;
2908 bfd_size_type len;
2909
2910 if (hash)
2911 {
2912 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1;
2913 stub_name = bfd_malloc (len);
2914 if (stub_name != NULL)
2915 sprintf (stub_name, "%08x_%s+%x",
2916 input_section->id & 0xffffffff,
2917 hash->root.root.root.string,
2918 (int) rel->r_addend & 0xffffffff);
2919 }
2920 else
2921 {
2922 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
2923 stub_name = bfd_malloc (len);
2924 if (stub_name != NULL)
2925 sprintf (stub_name, "%08x_%x:%x+%x",
2926 input_section->id & 0xffffffff,
2927 sym_sec->id & 0xffffffff,
2928 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
2929 (int) rel->r_addend & 0xffffffff);
2930 }
2931
2932 return stub_name;
2933}
2934
2935/* Look up an entry in the stub hash. Stub entries are cached because
2936 creating the stub name takes a bit of time. */
2937
2938static struct elf32_arm_stub_hash_entry *
2939elf32_arm_get_stub_entry (const asection *input_section,
2940 const asection *sym_sec,
2941 struct elf_link_hash_entry *hash,
2942 const Elf_Internal_Rela *rel,
2943 struct elf32_arm_link_hash_table *htab)
2944{
2945 struct elf32_arm_stub_hash_entry *stub_entry;
2946 struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash;
2947 const asection *id_sec;
2948
2949 if ((input_section->flags & SEC_CODE) == 0)
2950 return NULL;
2951
2952 /* If this input section is part of a group of sections sharing one
2953 stub section, then use the id of the first section in the group.
2954 Stub names need to include a section id, as there may well be
2955 more than one stub used to reach say, printf, and we need to
2956 distinguish between them. */
2957 id_sec = htab->stub_group[input_section->id].link_sec;
2958
2959 if (h != NULL && h->stub_cache != NULL
2960 && h->stub_cache->h == h
2961 && h->stub_cache->id_sec == id_sec)
2962 {
2963 stub_entry = h->stub_cache;
2964 }
2965 else
2966 {
2967 char *stub_name;
2968
2969 stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel);
2970 if (stub_name == NULL)
2971 return NULL;
2972
2973 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
2974 stub_name, FALSE, FALSE);
2975 if (h != NULL)
2976 h->stub_cache = stub_entry;
2977
2978 free (stub_name);
2979 }
2980
2981 return stub_entry;
2982}
2983
906e58ca
NC
2984/* Add a new stub entry to the stub hash. Not all fields of the new
2985 stub entry are initialised. */
2986
2987static struct elf32_arm_stub_hash_entry *
2988elf32_arm_add_stub (const char *stub_name,
2989 asection *section,
da5938a2 2990 struct elf32_arm_link_hash_table *htab)
906e58ca
NC
2991{
2992 asection *link_sec;
2993 asection *stub_sec;
2994 struct elf32_arm_stub_hash_entry *stub_entry;
2995
2996 link_sec = htab->stub_group[section->id].link_sec;
2997 stub_sec = htab->stub_group[section->id].stub_sec;
2998 if (stub_sec == NULL)
2999 {
3000 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3001 if (stub_sec == NULL)
3002 {
3003 size_t namelen;
3004 bfd_size_type len;
3005 char *s_name;
3006
3007 namelen = strlen (link_sec->name);
3008 len = namelen + sizeof (STUB_SUFFIX);
3009 s_name = bfd_alloc (htab->stub_bfd, len);
3010 if (s_name == NULL)
3011 return NULL;
3012
3013 memcpy (s_name, link_sec->name, namelen);
3014 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3015 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3016 if (stub_sec == NULL)
3017 return NULL;
3018 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3019 }
3020 htab->stub_group[section->id].stub_sec = stub_sec;
3021 }
3022
3023 /* Enter this entry into the linker stub hash table. */
3024 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3025 TRUE, FALSE);
3026 if (stub_entry == NULL)
3027 {
3028 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3029 section->owner,
3030 stub_name);
3031 return NULL;
3032 }
3033
3034 stub_entry->stub_sec = stub_sec;
3035 stub_entry->stub_offset = 0;
3036 stub_entry->id_sec = link_sec;
3037
906e58ca
NC
3038 return stub_entry;
3039}
3040
3041/* Store an Arm insn into an output section not processed by
3042 elf32_arm_write_section. */
3043
3044static void
8029a119
NC
3045put_arm_insn (struct elf32_arm_link_hash_table * htab,
3046 bfd * output_bfd, bfd_vma val, void * ptr)
906e58ca
NC
3047{
3048 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3049 bfd_putl32 (val, ptr);
3050 else
3051 bfd_putb32 (val, ptr);
3052}
3053
3054/* Store a 16-bit Thumb insn into an output section not processed by
3055 elf32_arm_write_section. */
3056
3057static void
8029a119
NC
3058put_thumb_insn (struct elf32_arm_link_hash_table * htab,
3059 bfd * output_bfd, bfd_vma val, void * ptr)
906e58ca
NC
3060{
3061 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3062 bfd_putl16 (val, ptr);
3063 else
3064 bfd_putb16 (val, ptr);
3065}
3066
3067static bfd_boolean
3068arm_build_one_stub (struct bfd_hash_entry *gen_entry,
3069 void * in_arg)
3070{
3071 struct elf32_arm_stub_hash_entry *stub_entry;
3072 struct bfd_link_info *info;
3073 struct elf32_arm_link_hash_table *htab;
3074 asection *stub_sec;
3075 bfd *stub_bfd;
3076 bfd_vma stub_addr;
3077 bfd_byte *loc;
3078 bfd_vma sym_value;
3079 int template_size;
3080 int size;
3081 const bfd_vma *template;
3082 int i;
3083 struct elf32_arm_link_hash_table * globals;
3084
3085 /* Massage our args to the form they really have. */
3086 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3087 info = (struct bfd_link_info *) in_arg;
3088
3089 globals = elf32_arm_hash_table (info);
3090
3091 htab = elf32_arm_hash_table (info);
3092 stub_sec = stub_entry->stub_sec;
3093
3094 /* Make a note of the offset within the stubs for this entry. */
3095 stub_entry->stub_offset = stub_sec->size;
3096 loc = stub_sec->contents + stub_entry->stub_offset;
3097
3098 stub_bfd = stub_sec->owner;
3099
3100 /* This is the address of the start of the stub. */
3101 stub_addr = stub_sec->output_section->vma + stub_sec->output_offset
3102 + stub_entry->stub_offset;
3103
3104 /* This is the address of the stub destination. */
3105 sym_value = (stub_entry->target_value
3106 + stub_entry->target_section->output_offset
3107 + stub_entry->target_section->output_section->vma);
3108
3109 switch (stub_entry->stub_type)
3110 {
3111 case arm_stub_long_branch:
3112 template = arm_long_branch_stub;
3113 template_size = (sizeof (arm_long_branch_stub) / sizeof (bfd_vma)) * 4;
3114 break;
3115 case arm_thumb_v4t_stub_long_branch:
3116 template = arm_thumb_v4t_long_branch_stub;
3117 template_size = (sizeof (arm_thumb_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3118 break;
3119 case arm_thumb_thumb_stub_long_branch:
3120 template = arm_thumb_thumb_long_branch_stub;
3121 template_size = (sizeof (arm_thumb_thumb_long_branch_stub) / sizeof (bfd_vma)) * 4;
3122 break;
3123 case arm_thumb_arm_v4t_stub_long_branch:
3124 template = arm_thumb_arm_v4t_long_branch_stub;
3125 template_size = (sizeof (arm_thumb_arm_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3126 break;
c820be07
NC
3127 case arm_thumb_arm_v4t_stub_short_branch:
3128 template = arm_thumb_arm_v4t_short_branch_stub;
3129 template_size = (sizeof(arm_thumb_arm_v4t_short_branch_stub) / sizeof (bfd_vma)) * 4;
3130 break;
906e58ca
NC
3131 case arm_stub_pic_long_branch:
3132 template = arm_pic_long_branch_stub;
3133 template_size = (sizeof (arm_pic_long_branch_stub) / sizeof (bfd_vma)) * 4;
3134 break;
3135 default:
3136 BFD_FAIL ();
3137 return FALSE;
3138 }
3139
3140 size = 0;
3141 for (i = 0; i < (template_size / 4); i++)
3142 {
3143 /* A 0 pattern is a placeholder, every other pattern is an
3144 instruction. */
3145 if (template[i] != 0)
3146 put_arm_insn (globals, stub_bfd, template[i], loc + size);
3147 else
3148 bfd_put_32 (stub_bfd, template[i], loc + size);
3149
3150 size += 4;
3151 }
3152 stub_sec->size += size;
3153
3154 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3155 if (stub_entry->st_type == STT_ARM_TFUNC)
3156 sym_value |= 1;
3157
3158 switch (stub_entry->stub_type)
3159 {
3160 case arm_stub_long_branch:
3161 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
7413f23f
DJ
3162 stub_bfd, stub_sec, stub_sec->contents,
3163 stub_entry->stub_offset + 4, sym_value, 0);
906e58ca
NC
3164 break;
3165 case arm_thumb_v4t_stub_long_branch:
3166 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
7413f23f
DJ
3167 stub_bfd, stub_sec, stub_sec->contents,
3168 stub_entry->stub_offset + 8, sym_value, 0);
906e58ca
NC
3169 break;
3170 case arm_thumb_thumb_stub_long_branch:
3171 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
7413f23f
DJ
3172 stub_bfd, stub_sec, stub_sec->contents,
3173 stub_entry->stub_offset + 12, sym_value, 0);
906e58ca
NC
3174 break;
3175 case arm_thumb_arm_v4t_stub_long_branch:
3176 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
7413f23f
DJ
3177 stub_bfd, stub_sec, stub_sec->contents,
3178 stub_entry->stub_offset + 16, sym_value, 0);
906e58ca 3179 break;
c820be07
NC
3180 case arm_thumb_arm_v4t_stub_short_branch:
3181 {
3182 long int rel_offset;
3183 static const insn32 t2a3_b_insn = 0xea000000;
3184
3185 rel_offset = sym_value - (stub_addr + 8 + 4);
3186
3187 put_arm_insn (globals, stub_bfd,
3188 (bfd_vma) t2a3_b_insn | ((rel_offset >> 2) & 0x00FFFFFF),
3189 loc + 4);
3190 }
3191 break;
3192
906e58ca
NC
3193 case arm_stub_pic_long_branch:
3194 /* We want the value relative to the address 8 bytes from the
3195 start of the stub. */
7413f23f
DJ
3196 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_REL32),
3197 stub_bfd, stub_sec, stub_sec->contents,
3198 stub_entry->stub_offset + 8, sym_value, 0);
906e58ca
NC
3199 break;
3200 default:
3201 break;
3202 }
3203
3204 return TRUE;
3205}
3206
3207/* As above, but don't actually build the stub. Just bump offset so
3208 we know stub section sizes. */
3209
3210static bfd_boolean
3211arm_size_one_stub (struct bfd_hash_entry *gen_entry,
3212 void * in_arg)
3213{
3214 struct elf32_arm_stub_hash_entry *stub_entry;
3215 struct elf32_arm_link_hash_table *htab;
3216 const bfd_vma *template;
3217 int template_size;
3218 int size;
3219 int i;
3220
3221 /* Massage our args to the form they really have. */
3222 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3223 htab = (struct elf32_arm_link_hash_table *) in_arg;
3224
3225 switch (stub_entry->stub_type)
3226 {
3227 case arm_stub_long_branch:
3228 template = arm_long_branch_stub;
3229 template_size = (sizeof (arm_long_branch_stub) / sizeof (bfd_vma)) * 4;
3230 break;
3231 case arm_thumb_v4t_stub_long_branch:
3232 template = arm_thumb_v4t_long_branch_stub;
3233 template_size = (sizeof (arm_thumb_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3234 break;
3235 case arm_thumb_thumb_stub_long_branch:
3236 template = arm_thumb_thumb_long_branch_stub;
3237 template_size = (sizeof (arm_thumb_thumb_long_branch_stub) / sizeof (bfd_vma)) * 4;
3238 break;
3239 case arm_thumb_arm_v4t_stub_long_branch:
3240 template = arm_thumb_arm_v4t_long_branch_stub;
3241 template_size = (sizeof (arm_thumb_arm_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3242 break;
c820be07
NC
3243 case arm_thumb_arm_v4t_stub_short_branch:
3244 template = arm_thumb_arm_v4t_short_branch_stub;
3245 template_size = (sizeof(arm_thumb_arm_v4t_short_branch_stub) / sizeof (bfd_vma)) * 4;
3246 break;
906e58ca
NC
3247 case arm_stub_pic_long_branch:
3248 template = arm_pic_long_branch_stub;
3249 template_size = (sizeof (arm_pic_long_branch_stub) / sizeof (bfd_vma)) * 4;
3250 break;
3251 default:
3252 BFD_FAIL ();
3253 return FALSE;
3254 break;
3255 }
3256
3257 size = 0;
3258 for (i = 0; i < (template_size / 4); i++)
3259 size += 4;
3260 size = (size + 7) & ~7;
3261 stub_entry->stub_sec->size += size;
3262 return TRUE;
3263}
3264
3265/* External entry points for sizing and building linker stubs. */
3266
3267/* Set up various things so that we can make a list of input sections
3268 for each output section included in the link. Returns -1 on error,
3269 0 when no stubs will be needed, and 1 on success. */
3270
3271int
3272elf32_arm_setup_section_lists (bfd *output_bfd,
3273 struct bfd_link_info *info)
3274{
3275 bfd *input_bfd;
3276 unsigned int bfd_count;
3277 int top_id, top_index;
3278 asection *section;
3279 asection **input_list, **list;
3280 bfd_size_type amt;
3281 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3282
3283 if (! is_elf_hash_table (htab))
3284 return 0;
3285
3286 /* Count the number of input BFDs and find the top input section id. */
3287 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3288 input_bfd != NULL;
3289 input_bfd = input_bfd->link_next)
3290 {
3291 bfd_count += 1;
3292 for (section = input_bfd->sections;
3293 section != NULL;
3294 section = section->next)
3295 {
3296 if (top_id < section->id)
3297 top_id = section->id;
3298 }
3299 }
3300 htab->bfd_count = bfd_count;
3301
3302 amt = sizeof (struct map_stub) * (top_id + 1);
3303 htab->stub_group = bfd_zmalloc (amt);
3304 if (htab->stub_group == NULL)
3305 return -1;
3306
3307 /* We can't use output_bfd->section_count here to find the top output
3308 section index as some sections may have been removed, and
3309 _bfd_strip_section_from_output doesn't renumber the indices. */
3310 for (section = output_bfd->sections, top_index = 0;
3311 section != NULL;
3312 section = section->next)
3313 {
3314 if (top_index < section->index)
3315 top_index = section->index;
3316 }
3317
3318 htab->top_index = top_index;
3319 amt = sizeof (asection *) * (top_index + 1);
3320 input_list = bfd_malloc (amt);
3321 htab->input_list = input_list;
3322 if (input_list == NULL)
3323 return -1;
3324
3325 /* For sections we aren't interested in, mark their entries with a
3326 value we can check later. */
3327 list = input_list + top_index;
3328 do
3329 *list = bfd_abs_section_ptr;
3330 while (list-- != input_list);
3331
3332 for (section = output_bfd->sections;
3333 section != NULL;
3334 section = section->next)
3335 {
3336 if ((section->flags & SEC_CODE) != 0)
3337 input_list[section->index] = NULL;
3338 }
3339
3340 return 1;
3341}
3342
3343/* The linker repeatedly calls this function for each input section,
3344 in the order that input sections are linked into output sections.
3345 Build lists of input sections to determine groupings between which
3346 we may insert linker stubs. */
3347
3348void
3349elf32_arm_next_input_section (struct bfd_link_info *info,
3350 asection *isec)
3351{
3352 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3353
3354 if (isec->output_section->index <= htab->top_index)
3355 {
3356 asection **list = htab->input_list + isec->output_section->index;
3357
3358 if (*list != bfd_abs_section_ptr)
3359 {
3360 /* Steal the link_sec pointer for our list. */
3361#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3362 /* This happens to make the list in reverse order,
3363 which is what we want. */
3364 PREV_SEC (isec) = *list;
3365 *list = isec;
3366 }
3367 }
3368}
3369
3370/* See whether we can group stub sections together. Grouping stub
3371 sections may result in fewer stubs. More importantly, we need to
3372 put all .init* and .fini* stubs at the beginning of the .init or
3373 .fini output sections respectively, because glibc splits the
3374 _init and _fini functions into multiple parts. Putting a stub in
3375 the middle of a function is not a good idea. */
3376
3377static void
3378group_sections (struct elf32_arm_link_hash_table *htab,
3379 bfd_size_type stub_group_size,
3380 bfd_boolean stubs_always_before_branch)
3381{
3382 asection **list = htab->input_list + htab->top_index;
3383
3384 do
3385 {
3386 asection *tail = *list;
3387
3388 if (tail == bfd_abs_section_ptr)
3389 continue;
3390
3391 while (tail != NULL)
3392 {
3393 asection *curr;
3394 asection *prev;
3395 bfd_size_type total;
3396
3397 curr = tail;
3398 total = tail->size;
3399 while ((prev = PREV_SEC (curr)) != NULL
3400 && ((total += curr->output_offset - prev->output_offset)
3401 < stub_group_size))
3402 curr = prev;
3403
3404 /* OK, the size from the start of CURR to the end is less
3405 than stub_group_size and thus can be handled by one stub
7fb9f789 3406 section. (Or the tail section is itself larger than
906e58ca
NC
3407 stub_group_size, in which case we may be toast.)
3408 We should really be keeping track of the total size of
3409 stubs added here, as stubs contribute to the final output
7fb9f789 3410 section size. */
906e58ca
NC
3411 do
3412 {
3413 prev = PREV_SEC (tail);
3414 /* Set up this stub group. */
3415 htab->stub_group[tail->id].link_sec = curr;
3416 }
3417 while (tail != curr && (tail = prev) != NULL);
3418
3419 /* But wait, there's more! Input sections up to stub_group_size
3420 bytes before the stub section can be handled by it too. */
3421 if (!stubs_always_before_branch)
3422 {
3423 total = 0;
3424 while (prev != NULL
3425 && ((total += tail->output_offset - prev->output_offset)
3426 < stub_group_size))
3427 {
3428 tail = prev;
3429 prev = PREV_SEC (tail);
3430 htab->stub_group[tail->id].link_sec = curr;
3431 }
3432 }
3433 tail = prev;
3434 }
3435 }
3436 while (list-- != htab->input_list);
3437
3438 free (htab->input_list);
3439#undef PREV_SEC
3440}
3441
3442/* Determine and set the size of the stub section for a final link.
3443
3444 The basic idea here is to examine all the relocations looking for
3445 PC-relative calls to a target that is unreachable with a "bl"
3446 instruction. */
3447
3448bfd_boolean
3449elf32_arm_size_stubs (bfd *output_bfd,
3450 bfd *stub_bfd,
3451 struct bfd_link_info *info,
3452 bfd_signed_vma group_size,
3453 asection * (*add_stub_section) (const char *, asection *),
3454 void (*layout_sections_again) (void))
3455{
3456 bfd_size_type stub_group_size;
3457 bfd_boolean stubs_always_before_branch;
3458 bfd_boolean stub_changed = 0;
3459 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3460
3461 /* Propagate mach to stub bfd, because it may not have been
3462 finalized when we created stub_bfd. */
3463 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3464 bfd_get_mach (output_bfd));
3465
3466 /* Stash our params away. */
3467 htab->stub_bfd = stub_bfd;
3468 htab->add_stub_section = add_stub_section;
3469 htab->layout_sections_again = layout_sections_again;
3470 stubs_always_before_branch = group_size < 0;
3471 if (group_size < 0)
3472 stub_group_size = -group_size;
3473 else
3474 stub_group_size = group_size;
3475
3476 if (stub_group_size == 1)
3477 {
3478 /* Default values. */
3479 /* Thumb branch range is +-4MB has to be used as the default
3480 maximum size (a given section can contain both ARM and Thumb
3481 code, so the worst case has to be taken into account).
3482
3483 This value is 24K less than that, which allows for 2025
3484 12-byte stubs. If we exceed that, then we will fail to link.
3485 The user will have to relink with an explicit group size
3486 option. */
3487 stub_group_size = 4170000;
3488 }
3489
3490 group_sections (htab, stub_group_size, stubs_always_before_branch);
3491
3492 while (1)
3493 {
3494 bfd *input_bfd;
3495 unsigned int bfd_indx;
3496 asection *stub_sec;
3497
3498 for (input_bfd = info->input_bfds, bfd_indx = 0;
3499 input_bfd != NULL;
3500 input_bfd = input_bfd->link_next, bfd_indx++)
3501 {
3502 Elf_Internal_Shdr *symtab_hdr;
3503 asection *section;
3504 Elf_Internal_Sym *local_syms = NULL;
3505
3506 /* We'll need the symbol table in a second. */
3507 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3508 if (symtab_hdr->sh_info == 0)
3509 continue;
3510
3511 /* Walk over each section attached to the input bfd. */
3512 for (section = input_bfd->sections;
3513 section != NULL;
3514 section = section->next)
3515 {
3516 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3517
3518 /* If there aren't any relocs, then there's nothing more
3519 to do. */
3520 if ((section->flags & SEC_RELOC) == 0
3521 || section->reloc_count == 0
3522 || (section->flags & SEC_CODE) == 0)
3523 continue;
3524
3525 /* If this section is a link-once section that will be
3526 discarded, then don't create any stubs. */
3527 if (section->output_section == NULL
3528 || section->output_section->owner != output_bfd)
3529 continue;
3530
3531 /* Get the relocs. */
3532 internal_relocs
3533 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
3534 NULL, info->keep_memory);
3535 if (internal_relocs == NULL)
3536 goto error_ret_free_local;
3537
3538 /* Now examine each relocation. */
3539 irela = internal_relocs;
3540 irelaend = irela + section->reloc_count;
3541 for (; irela < irelaend; irela++)
3542 {
3543 unsigned int r_type, r_indx;
3544 enum elf32_arm_stub_type stub_type;
3545 struct elf32_arm_stub_hash_entry *stub_entry;
3546 asection *sym_sec;
3547 bfd_vma sym_value;
3548 bfd_vma destination;
3549 struct elf32_arm_link_hash_entry *hash;
7413f23f 3550 const char *sym_name;
906e58ca
NC
3551 char *stub_name;
3552 const asection *id_sec;
3553 unsigned char st_type;
3554
3555 r_type = ELF32_R_TYPE (irela->r_info);
3556 r_indx = ELF32_R_SYM (irela->r_info);
3557
3558 if (r_type >= (unsigned int) R_ARM_max)
3559 {
3560 bfd_set_error (bfd_error_bad_value);
3561 error_ret_free_internal:
3562 if (elf_section_data (section)->relocs == NULL)
3563 free (internal_relocs);
3564 goto error_ret_free_local;
3565 }
3566
3567 /* Only look for stubs on call instructions. */
3568 if ((r_type != (unsigned int) R_ARM_CALL)
3569 && (r_type != (unsigned int) R_ARM_THM_CALL))
3570 continue;
3571
3572 /* Now determine the call target, its name, value,
3573 section. */
3574 sym_sec = NULL;
3575 sym_value = 0;
3576 destination = 0;
3577 hash = NULL;
7413f23f 3578 sym_name = NULL;
906e58ca
NC
3579 if (r_indx < symtab_hdr->sh_info)
3580 {
3581 /* It's a local symbol. */
3582 Elf_Internal_Sym *sym;
3583 Elf_Internal_Shdr *hdr;
3584
3585 if (local_syms == NULL)
3586 {
3587 local_syms
3588 = (Elf_Internal_Sym *) symtab_hdr->contents;
3589 if (local_syms == NULL)
3590 local_syms
3591 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3592 symtab_hdr->sh_info, 0,
3593 NULL, NULL, NULL);
3594 if (local_syms == NULL)
3595 goto error_ret_free_internal;
3596 }
3597
3598 sym = local_syms + r_indx;
3599 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
3600 sym_sec = hdr->bfd_section;
3601 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
3602 sym_value = sym->st_value;
3603 destination = (sym_value + irela->r_addend
3604 + sym_sec->output_offset
3605 + sym_sec->output_section->vma);
3606 st_type = ELF_ST_TYPE (sym->st_info);
7413f23f
DJ
3607 sym_name
3608 = bfd_elf_string_from_elf_section (input_bfd,
3609 symtab_hdr->sh_link,
3610 sym->st_name);
906e58ca
NC
3611 }
3612 else
3613 {
3614 /* It's an external symbol. */
3615 int e_indx;
3616
3617 e_indx = r_indx - symtab_hdr->sh_info;
3618 hash = ((struct elf32_arm_link_hash_entry *)
3619 elf_sym_hashes (input_bfd)[e_indx]);
3620
3621 while (hash->root.root.type == bfd_link_hash_indirect
3622 || hash->root.root.type == bfd_link_hash_warning)
3623 hash = ((struct elf32_arm_link_hash_entry *)
3624 hash->root.root.u.i.link);
3625
3626 if (hash->root.root.type == bfd_link_hash_defined
3627 || hash->root.root.type == bfd_link_hash_defweak)
3628 {
3629 sym_sec = hash->root.root.u.def.section;
3630 sym_value = hash->root.root.u.def.value;
3631 if (sym_sec->output_section != NULL)
3632 destination = (sym_value + irela->r_addend
3633 + sym_sec->output_offset
3634 + sym_sec->output_section->vma);
3635 }
3636 else if (hash->root.root.type == bfd_link_hash_undefweak
3637 || hash->root.root.type == bfd_link_hash_undefined)
3638 /* For a shared library, these will need a PLT stub,
3639 which is treated separately.
3640 For absolute code, they cannot be handled. */
3641 continue;
3642 else
3643 {
3644 bfd_set_error (bfd_error_bad_value);
3645 goto error_ret_free_internal;
3646 }
3647 st_type = ELF_ST_TYPE (hash->root.type);
7413f23f 3648 sym_name = hash->root.root.root.string;
906e58ca
NC
3649 }
3650
3651 /* Determine what (if any) linker stub is needed. */
3652 stub_type = arm_type_of_stub (info, section, irela, st_type,
c820be07
NC
3653 hash, destination, sym_sec,
3654 input_bfd, sym_name);
906e58ca
NC
3655 if (stub_type == arm_stub_none)
3656 continue;
5e681ec4 3657
906e58ca
NC
3658 /* Support for grouping stub sections. */
3659 id_sec = htab->stub_group[section->id].link_sec;
5e681ec4 3660
906e58ca
NC
3661 /* Get the name of this stub. */
3662 stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela);
3663 if (!stub_name)
3664 goto error_ret_free_internal;
5e681ec4 3665
906e58ca
NC
3666 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
3667 stub_name,
3668 FALSE, FALSE);
3669 if (stub_entry != NULL)
3670 {
3671 /* The proper stub has already been created. */
3672 free (stub_name);
3673 continue;
3674 }
5e681ec4 3675
da5938a2 3676 stub_entry = elf32_arm_add_stub (stub_name, section, htab);
906e58ca
NC
3677 if (stub_entry == NULL)
3678 {
3679 free (stub_name);
3680 goto error_ret_free_internal;
3681 }
5e681ec4 3682
906e58ca
NC
3683 stub_entry->target_value = sym_value;
3684 stub_entry->target_section = sym_sec;
3685 stub_entry->stub_type = stub_type;
3686 stub_entry->h = hash;
3687 stub_entry->st_type = st_type;
7413f23f
DJ
3688
3689 if (sym_name == NULL)
3690 sym_name = "unnamed";
3691 stub_entry->output_name
3692 = bfd_alloc (htab->stub_bfd,
3693 sizeof (THUMB2ARM_GLUE_ENTRY_NAME)
3694 + strlen (sym_name));
3695 if (stub_entry->output_name == NULL)
3696 {
3697 free (stub_name);
3698 goto error_ret_free_internal;
3699 }
3700
3701 /* For historical reasons, use the existing names for
3702 ARM-to-Thumb and Thumb-to-ARM stubs. */
3703 if (r_type == (unsigned int) R_ARM_THM_CALL
3704 && st_type != STT_ARM_TFUNC)
3705 sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME,
3706 sym_name);
3707 else if (r_type == (unsigned int) R_ARM_CALL
3708 && st_type == STT_ARM_TFUNC)
3709 sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME,
3710 sym_name);
3711 else
3712 sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
3713 sym_name);
3714
906e58ca
NC
3715 stub_changed = TRUE;
3716 }
3717
3718 /* We're done with the internal relocs, free them. */
3719 if (elf_section_data (section)->relocs == NULL)
3720 free (internal_relocs);
5e681ec4 3721 }
5e681ec4
PB
3722 }
3723
906e58ca
NC
3724 if (!stub_changed)
3725 break;
5e681ec4 3726
906e58ca
NC
3727 /* OK, we've added some stubs. Find out the new size of the
3728 stub sections. */
3729 for (stub_sec = htab->stub_bfd->sections;
3730 stub_sec != NULL;
3731 stub_sec = stub_sec->next)
3732 stub_sec->size = 0;
b34b2d70 3733
906e58ca
NC
3734 bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab);
3735
3736 /* Ask the linker to do its stuff. */
3737 (*htab->layout_sections_again) ();
3738 stub_changed = FALSE;
ba93b8ac
DJ
3739 }
3740
906e58ca
NC
3741 return TRUE;
3742
3743 error_ret_free_local:
3744 return FALSE;
5e681ec4
PB
3745}
3746
906e58ca
NC
3747/* Build all the stubs associated with the current output file. The
3748 stubs are kept in a hash table attached to the main linker hash
3749 table. We also set up the .plt entries for statically linked PIC
3750 functions here. This function is called via arm_elf_finish in the
3751 linker. */
252b5132 3752
906e58ca
NC
3753bfd_boolean
3754elf32_arm_build_stubs (struct bfd_link_info *info)
252b5132 3755{
906e58ca
NC
3756 asection *stub_sec;
3757 struct bfd_hash_table *table;
3758 struct elf32_arm_link_hash_table *htab;
252b5132 3759
906e58ca 3760 htab = elf32_arm_hash_table (info);
252b5132 3761
906e58ca
NC
3762 for (stub_sec = htab->stub_bfd->sections;
3763 stub_sec != NULL;
3764 stub_sec = stub_sec->next)
252b5132 3765 {
906e58ca
NC
3766 bfd_size_type size;
3767
8029a119 3768 /* Ignore non-stub sections. */
906e58ca
NC
3769 if (!strstr (stub_sec->name, STUB_SUFFIX))
3770 continue;
3771
3772 /* Allocate memory to hold the linker stubs. */
3773 size = stub_sec->size;
3774 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3775 if (stub_sec->contents == NULL && size != 0)
3776 return FALSE;
3777 stub_sec->size = 0;
252b5132
RH
3778 }
3779
906e58ca
NC
3780 /* Build the stubs as directed by the stub hash table. */
3781 table = &htab->stub_hash_table;
3782 bfd_hash_traverse (table, arm_build_one_stub, info);
252b5132 3783
906e58ca 3784 return TRUE;
252b5132
RH
3785}
3786
9b485d32
NC
3787/* Locate the Thumb encoded calling stub for NAME. */
3788
252b5132 3789static struct elf_link_hash_entry *
57e8b36a
NC
3790find_thumb_glue (struct bfd_link_info *link_info,
3791 const char *name,
f2a9dd69 3792 char **error_message)
252b5132
RH
3793{
3794 char *tmp_name;
3795 struct elf_link_hash_entry *hash;
3796 struct elf32_arm_link_hash_table *hash_table;
3797
3798 /* We need a pointer to the armelf specific hash table. */
3799 hash_table = elf32_arm_hash_table (link_info);
3800
57e8b36a
NC
3801 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3802 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH
3803
3804 BFD_ASSERT (tmp_name);
3805
3806 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
3807
3808 hash = elf_link_hash_lookup
b34976b6 3809 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 3810
b1657152
AM
3811 if (hash == NULL
3812 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
3813 tmp_name, name) == -1)
3814 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH
3815
3816 free (tmp_name);
3817
3818 return hash;
3819}
3820
9b485d32
NC
3821/* Locate the ARM encoded calling stub for NAME. */
3822
252b5132 3823static struct elf_link_hash_entry *
57e8b36a
NC
3824find_arm_glue (struct bfd_link_info *link_info,
3825 const char *name,
f2a9dd69 3826 char **error_message)
252b5132
RH
3827{
3828 char *tmp_name;
3829 struct elf_link_hash_entry *myh;
3830 struct elf32_arm_link_hash_table *hash_table;
3831
3832 /* We need a pointer to the elfarm specific hash table. */
3833 hash_table = elf32_arm_hash_table (link_info);
3834
57e8b36a
NC
3835 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3836 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH
3837
3838 BFD_ASSERT (tmp_name);
3839
3840 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
3841
3842 myh = elf_link_hash_lookup
b34976b6 3843 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 3844
b1657152
AM
3845 if (myh == NULL
3846 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
3847 tmp_name, name) == -1)
3848 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH
3849
3850 free (tmp_name);
3851
3852 return myh;
3853}
3854
8f6277f5 3855/* ARM->Thumb glue (static images):
252b5132
RH
3856
3857 .arm
3858 __func_from_arm:
3859 ldr r12, __func_addr
3860 bx r12
3861 __func_addr:
906e58ca 3862 .word func @ behave as if you saw a ARM_32 reloc.
252b5132 3863
26079076
PB
3864 (v5t static images)
3865 .arm
3866 __func_from_arm:
3867 ldr pc, __func_addr
3868 __func_addr:
906e58ca 3869 .word func @ behave as if you saw a ARM_32 reloc.
26079076 3870
8f6277f5
PB
3871 (relocatable images)
3872 .arm
3873 __func_from_arm:
3874 ldr r12, __func_offset
3875 add r12, r12, pc
3876 bx r12
3877 __func_offset:
8029a119 3878 .word func - . */
8f6277f5
PB
3879
3880#define ARM2THUMB_STATIC_GLUE_SIZE 12
252b5132
RH
3881static const insn32 a2t1_ldr_insn = 0xe59fc000;
3882static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
3883static const insn32 a2t3_func_addr_insn = 0x00000001;
3884
26079076
PB
3885#define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
3886static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
3887static const insn32 a2t2v5_func_addr_insn = 0x00000001;
3888
8f6277f5
PB
3889#define ARM2THUMB_PIC_GLUE_SIZE 16
3890static const insn32 a2t1p_ldr_insn = 0xe59fc004;
3891static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
3892static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
3893
9b485d32 3894/* Thumb->ARM: Thumb->(non-interworking aware) ARM
252b5132 3895
8029a119
NC
3896 .thumb .thumb
3897 .align 2 .align 2
3898 __func_from_thumb: __func_from_thumb:
3899 bx pc push {r6, lr}
3900 nop ldr r6, __func_addr
3901 .arm mov lr, pc
3902 b func bx r6
fcef9eb7
NC
3903 .arm
3904 ;; back_to_thumb
3905 ldmia r13! {r6, lr}
3906 bx lr
8029a119
NC
3907 __func_addr:
3908 .word func */
252b5132
RH
3909
3910#define THUMB2ARM_GLUE_SIZE 8
3911static const insn16 t2a1_bx_pc_insn = 0x4778;
3912static const insn16 t2a2_noop_insn = 0x46c0;
3913static const insn32 t2a3_b_insn = 0xea000000;
3914
c7b8f16e
JB
3915#define VFP11_ERRATUM_VENEER_SIZE 8
3916
845b51d6
PB
3917#define ARM_BX_VENEER_SIZE 12
3918static const insn32 armbx1_tst_insn = 0xe3100001;
3919static const insn32 armbx2_moveq_insn = 0x01a0f000;
3920static const insn32 armbx3_bx_insn = 0xe12fff10;
3921
7e392df6 3922#ifndef ELFARM_NABI_C_INCLUDED
8029a119
NC
3923static void
3924arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name)
252b5132
RH
3925{
3926 asection * s;
8029a119 3927 bfd_byte * contents;
252b5132 3928
8029a119
NC
3929 if (size == 0)
3930 return;
252b5132 3931
8029a119 3932 BFD_ASSERT (abfd != NULL);
252b5132 3933
8029a119
NC
3934 s = bfd_get_section_by_name (abfd, name);
3935 BFD_ASSERT (s != NULL);
252b5132 3936
8029a119 3937 contents = bfd_alloc (abfd, size);
252b5132 3938
8029a119
NC
3939 BFD_ASSERT (s->size == size);
3940 s->contents = contents;
3941}
906e58ca 3942
8029a119
NC
3943bfd_boolean
3944bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
3945{
3946 struct elf32_arm_link_hash_table * globals;
906e58ca 3947
8029a119
NC
3948 globals = elf32_arm_hash_table (info);
3949 BFD_ASSERT (globals != NULL);
906e58ca 3950
8029a119
NC
3951 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3952 globals->arm_glue_size,
3953 ARM2THUMB_GLUE_SECTION_NAME);
906e58ca 3954
8029a119
NC
3955 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3956 globals->thumb_glue_size,
3957 THUMB2ARM_GLUE_SECTION_NAME);
252b5132 3958
8029a119
NC
3959 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3960 globals->vfp11_erratum_glue_size,
3961 VFP11_ERRATUM_VENEER_SECTION_NAME);
845b51d6 3962
8029a119
NC
3963 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3964 globals->bx_glue_size,
845b51d6
PB
3965 ARM_BX_GLUE_SECTION_NAME);
3966
b34976b6 3967 return TRUE;
252b5132
RH
3968}
3969
a4fd1a8e 3970/* Allocate space and symbols for calling a Thumb function from Arm mode.
906e58ca
NC
3971 returns the symbol identifying the stub. */
3972
a4fd1a8e 3973static struct elf_link_hash_entry *
57e8b36a
NC
3974record_arm_to_thumb_glue (struct bfd_link_info * link_info,
3975 struct elf_link_hash_entry * h)
252b5132
RH
3976{
3977 const char * name = h->root.root.string;
63b0f745 3978 asection * s;
252b5132
RH
3979 char * tmp_name;
3980 struct elf_link_hash_entry * myh;
14a793b2 3981 struct bfd_link_hash_entry * bh;
252b5132 3982 struct elf32_arm_link_hash_table * globals;
dc810e39 3983 bfd_vma val;
2f475487 3984 bfd_size_type size;
252b5132
RH
3985
3986 globals = elf32_arm_hash_table (link_info);
3987
3988 BFD_ASSERT (globals != NULL);
3989 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3990
3991 s = bfd_get_section_by_name
3992 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
3993
252b5132
RH
3994 BFD_ASSERT (s != NULL);
3995
57e8b36a 3996 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH
3997
3998 BFD_ASSERT (tmp_name);
3999
4000 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
4001
4002 myh = elf_link_hash_lookup
b34976b6 4003 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH
4004
4005 if (myh != NULL)
4006 {
9b485d32 4007 /* We've already seen this guy. */
252b5132 4008 free (tmp_name);
a4fd1a8e 4009 return myh;
252b5132
RH
4010 }
4011
57e8b36a
NC
4012 /* The only trick here is using hash_table->arm_glue_size as the value.
4013 Even though the section isn't allocated yet, this is where we will be
3dccd7b7
DJ
4014 putting it. The +1 on the value marks that the stub has not been
4015 output yet - not that it is a Thumb function. */
14a793b2 4016 bh = NULL;
dc810e39
AM
4017 val = globals->arm_glue_size + 1;
4018 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4019 tmp_name, BSF_GLOBAL, s, val,
b34976b6 4020 NULL, TRUE, FALSE, &bh);
252b5132 4021
b7693d02
DJ
4022 myh = (struct elf_link_hash_entry *) bh;
4023 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4024 myh->forced_local = 1;
4025
252b5132
RH
4026 free (tmp_name);
4027
27e55c4d
PB
4028 if (link_info->shared || globals->root.is_relocatable_executable
4029 || globals->pic_veneer)
2f475487 4030 size = ARM2THUMB_PIC_GLUE_SIZE;
26079076
PB
4031 else if (globals->use_blx)
4032 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
8f6277f5 4033 else
2f475487
AM
4034 size = ARM2THUMB_STATIC_GLUE_SIZE;
4035
4036 s->size += size;
4037 globals->arm_glue_size += size;
252b5132 4038
a4fd1a8e 4039 return myh;
252b5132
RH
4040}
4041
4042static void
57e8b36a
NC
4043record_thumb_to_arm_glue (struct bfd_link_info *link_info,
4044 struct elf_link_hash_entry *h)
252b5132
RH
4045{
4046 const char *name = h->root.root.string;
63b0f745 4047 asection *s;
252b5132
RH
4048 char *tmp_name;
4049 struct elf_link_hash_entry *myh;
14a793b2 4050 struct bfd_link_hash_entry *bh;
252b5132 4051 struct elf32_arm_link_hash_table *hash_table;
dc810e39 4052 bfd_vma val;
252b5132
RH
4053
4054 hash_table = elf32_arm_hash_table (link_info);
4055
4056 BFD_ASSERT (hash_table != NULL);
4057 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
4058
4059 s = bfd_get_section_by_name
4060 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
4061
4062 BFD_ASSERT (s != NULL);
4063
57e8b36a
NC
4064 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4065 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH
4066
4067 BFD_ASSERT (tmp_name);
4068
4069 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
4070
4071 myh = elf_link_hash_lookup
b34976b6 4072 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH
4073
4074 if (myh != NULL)
4075 {
9b485d32 4076 /* We've already seen this guy. */
252b5132 4077 free (tmp_name);
9b485d32 4078 return;
252b5132
RH
4079 }
4080
3dccd7b7
DJ
4081 /* The only trick here is using hash_table->thumb_glue_size as the value.
4082 Even though the section isn't allocated yet, this is where we will be
4083 putting it. The +1 on the value marks that the stub has not been
4084 output yet - not that it is a Thumb function. */
14a793b2 4085 bh = NULL;
dc810e39
AM
4086 val = hash_table->thumb_glue_size + 1;
4087 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4088 tmp_name, BSF_GLOBAL, s, val,
b34976b6 4089 NULL, TRUE, FALSE, &bh);
252b5132 4090
9b485d32 4091 /* If we mark it 'Thumb', the disassembler will do a better job. */
14a793b2 4092 myh = (struct elf_link_hash_entry *) bh;
b7693d02
DJ
4093 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
4094 myh->forced_local = 1;
252b5132
RH
4095
4096 free (tmp_name);
4097
252b5132
RH
4098#define CHANGE_TO_ARM "__%s_change_to_arm"
4099#define BACK_FROM_ARM "__%s_back_from_arm"
4100
9b485d32 4101 /* Allocate another symbol to mark where we switch to Arm mode. */
57e8b36a
NC
4102 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4103 + strlen (CHANGE_TO_ARM) + 1);
252b5132
RH
4104
4105 BFD_ASSERT (tmp_name);
4106
4107 sprintf (tmp_name, CHANGE_TO_ARM, name);
4108
14a793b2 4109 bh = NULL;
dc810e39
AM
4110 val = hash_table->thumb_glue_size + 4,
4111 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4112 tmp_name, BSF_LOCAL, s, val,
b34976b6 4113 NULL, TRUE, FALSE, &bh);
252b5132
RH
4114
4115 free (tmp_name);
4116
2f475487 4117 s->size += THUMB2ARM_GLUE_SIZE;
252b5132 4118 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
252b5132
RH
4119}
4120
c7b8f16e 4121
845b51d6
PB
4122/* Allocate space for ARMv4 BX veneers. */
4123
4124static void
4125record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
4126{
4127 asection * s;
4128 struct elf32_arm_link_hash_table *globals;
4129 char *tmp_name;
4130 struct elf_link_hash_entry *myh;
4131 struct bfd_link_hash_entry *bh;
4132 bfd_vma val;
4133
4134 /* BX PC does not need a veneer. */
4135 if (reg == 15)
4136 return;
4137
4138 globals = elf32_arm_hash_table (link_info);
4139
4140 BFD_ASSERT (globals != NULL);
4141 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4142
4143 /* Check if this veneer has already been allocated. */
4144 if (globals->bx_glue_offset[reg])
4145 return;
4146
4147 s = bfd_get_section_by_name
4148 (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
4149
4150 BFD_ASSERT (s != NULL);
4151
4152 /* Add symbol for veneer. */
4153 tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
906e58ca 4154
845b51d6 4155 BFD_ASSERT (tmp_name);
906e58ca 4156
845b51d6 4157 sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
906e58ca 4158
845b51d6
PB
4159 myh = elf_link_hash_lookup
4160 (&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4161
845b51d6 4162 BFD_ASSERT (myh == NULL);
906e58ca 4163
845b51d6
PB
4164 bh = NULL;
4165 val = globals->bx_glue_size;
4166 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4167 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4168 NULL, TRUE, FALSE, &bh);
4169
4170 myh = (struct elf_link_hash_entry *) bh;
4171 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4172 myh->forced_local = 1;
4173
4174 s->size += ARM_BX_VENEER_SIZE;
4175 globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
4176 globals->bx_glue_size += ARM_BX_VENEER_SIZE;
4177}
4178
4179
c7b8f16e
JB
4180/* Add an entry to the code/data map for section SEC. */
4181
4182static void
4183elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
4184{
4185 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
4186 unsigned int newidx;
906e58ca 4187
c7b8f16e
JB
4188 if (sec_data->map == NULL)
4189 {
4190 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
4191 sec_data->mapcount = 0;
4192 sec_data->mapsize = 1;
4193 }
906e58ca 4194
c7b8f16e 4195 newidx = sec_data->mapcount++;
906e58ca 4196
c7b8f16e
JB
4197 if (sec_data->mapcount > sec_data->mapsize)
4198 {
4199 sec_data->mapsize *= 2;
515ef31d
NC
4200 sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize
4201 * sizeof (elf32_arm_section_map));
4202 }
4203
4204 if (sec_data->map)
4205 {
4206 sec_data->map[newidx].vma = vma;
4207 sec_data->map[newidx].type = type;
c7b8f16e 4208 }
c7b8f16e
JB
4209}
4210
4211
4212/* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4213 veneers are handled for now. */
4214
4215static bfd_vma
4216record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
4217 elf32_vfp11_erratum_list *branch,
4218 bfd *branch_bfd,
4219 asection *branch_sec,
4220 unsigned int offset)
4221{
4222 asection *s;
4223 struct elf32_arm_link_hash_table *hash_table;
4224 char *tmp_name;
4225 struct elf_link_hash_entry *myh;
4226 struct bfd_link_hash_entry *bh;
4227 bfd_vma val;
4228 struct _arm_elf_section_data *sec_data;
4229 int errcount;
4230 elf32_vfp11_erratum_list *newerr;
906e58ca 4231
c7b8f16e 4232 hash_table = elf32_arm_hash_table (link_info);
906e58ca 4233
c7b8f16e
JB
4234 BFD_ASSERT (hash_table != NULL);
4235 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
906e58ca 4236
c7b8f16e
JB
4237 s = bfd_get_section_by_name
4238 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
906e58ca 4239
c7b8f16e 4240 sec_data = elf32_arm_section_data (s);
906e58ca 4241
c7b8f16e 4242 BFD_ASSERT (s != NULL);
906e58ca 4243
c7b8f16e
JB
4244 tmp_name = bfd_malloc ((bfd_size_type) strlen
4245 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
906e58ca 4246
c7b8f16e 4247 BFD_ASSERT (tmp_name);
906e58ca 4248
c7b8f16e
JB
4249 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
4250 hash_table->num_vfp11_fixes);
906e58ca 4251
c7b8f16e
JB
4252 myh = elf_link_hash_lookup
4253 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4254
c7b8f16e 4255 BFD_ASSERT (myh == NULL);
906e58ca 4256
c7b8f16e
JB
4257 bh = NULL;
4258 val = hash_table->vfp11_erratum_glue_size;
4259 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4260 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4261 NULL, TRUE, FALSE, &bh);
4262
4263 myh = (struct elf_link_hash_entry *) bh;
4264 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4265 myh->forced_local = 1;
4266
4267 /* Link veneer back to calling location. */
4268 errcount = ++(sec_data->erratumcount);
4269 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
906e58ca 4270
c7b8f16e
JB
4271 newerr->type = VFP11_ERRATUM_ARM_VENEER;
4272 newerr->vma = -1;
4273 newerr->u.v.branch = branch;
4274 newerr->u.v.id = hash_table->num_vfp11_fixes;
4275 branch->u.b.veneer = newerr;
4276
4277 newerr->next = sec_data->erratumlist;
4278 sec_data->erratumlist = newerr;
4279
4280 /* A symbol for the return from the veneer. */
4281 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
4282 hash_table->num_vfp11_fixes);
4283
4284 myh = elf_link_hash_lookup
4285 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4286
c7b8f16e
JB
4287 if (myh != NULL)
4288 abort ();
4289
4290 bh = NULL;
4291 val = offset + 4;
4292 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
4293 branch_sec, val, NULL, TRUE, FALSE, &bh);
906e58ca 4294
c7b8f16e
JB
4295 myh = (struct elf_link_hash_entry *) bh;
4296 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4297 myh->forced_local = 1;
4298
4299 free (tmp_name);
906e58ca 4300
c7b8f16e
JB
4301 /* Generate a mapping symbol for the veneer section, and explicitly add an
4302 entry for that symbol to the code/data map for the section. */
4303 if (hash_table->vfp11_erratum_glue_size == 0)
4304 {
4305 bh = NULL;
4306 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4307 ever requires this erratum fix. */
4308 _bfd_generic_link_add_one_symbol (link_info,
4309 hash_table->bfd_of_glue_owner, "$a",
4310 BSF_LOCAL, s, 0, NULL,
4311 TRUE, FALSE, &bh);
4312
4313 myh = (struct elf_link_hash_entry *) bh;
4314 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
4315 myh->forced_local = 1;
906e58ca 4316
c7b8f16e
JB
4317 /* The elf32_arm_init_maps function only cares about symbols from input
4318 BFDs. We must make a note of this generated mapping symbol
4319 ourselves so that code byteswapping works properly in
4320 elf32_arm_write_section. */
4321 elf32_arm_section_map_add (s, 'a', 0);
4322 }
906e58ca 4323
c7b8f16e
JB
4324 s->size += VFP11_ERRATUM_VENEER_SIZE;
4325 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
4326 hash_table->num_vfp11_fixes++;
906e58ca 4327
c7b8f16e
JB
4328 /* The offset of the veneer. */
4329 return val;
4330}
4331
8029a119
NC
4332/* Note: we do not include the flag SEC_LINKER_CREATED, as that
4333 would prevent elf_link_input_bfd() from processing the contents
4334 of the section. */
4335#define ARM_GLUE_SECTION_FLAGS \
4336 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY)
4337
4338/* Create a fake section for use by the ARM backend of the linker. */
4339
4340static bfd_boolean
4341arm_make_glue_section (bfd * abfd, const char * name)
4342{
4343 asection * sec;
4344
4345 sec = bfd_get_section_by_name (abfd, name);
4346 if (sec != NULL)
4347 /* Already made. */
4348 return TRUE;
4349
4350 sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS);
4351
4352 if (sec == NULL
4353 || !bfd_set_section_alignment (abfd, sec, 2))
4354 return FALSE;
4355
4356 /* Set the gc mark to prevent the section from being removed by garbage
4357 collection, despite the fact that no relocs refer to this section. */
4358 sec->gc_mark = 1;
4359
4360 return TRUE;
4361}
4362
8afb0e02
NC
4363/* Add the glue sections to ABFD. This function is called from the
4364 linker scripts in ld/emultempl/{armelf}.em. */
9b485d32 4365
b34976b6 4366bfd_boolean
57e8b36a
NC
4367bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
4368 struct bfd_link_info *info)
252b5132 4369{
8afb0e02
NC
4370 /* If we are only performing a partial
4371 link do not bother adding the glue. */
1049f94e 4372 if (info->relocatable)
b34976b6 4373 return TRUE;
252b5132 4374
8029a119 4375 /* Linker stubs don't need glue. */
906e58ca
NC
4376 if (!strcmp (abfd->filename, "linker stubs"))
4377 return TRUE;
4378
8029a119
NC
4379 return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME)
4380 && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME)
4381 && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME)
4382 && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME);
8afb0e02
NC
4383}
4384
4385/* Select a BFD to be used to hold the sections used by the glue code.
4386 This function is called from the linker scripts in ld/emultempl/
8029a119 4387 {armelf/pe}.em. */
8afb0e02 4388
b34976b6 4389bfd_boolean
57e8b36a 4390bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
8afb0e02
NC
4391{
4392 struct elf32_arm_link_hash_table *globals;
4393
4394 /* If we are only performing a partial link
4395 do not bother getting a bfd to hold the glue. */
1049f94e 4396 if (info->relocatable)
b34976b6 4397 return TRUE;
8afb0e02 4398
b7693d02
DJ
4399 /* Make sure we don't attach the glue sections to a dynamic object. */
4400 BFD_ASSERT (!(abfd->flags & DYNAMIC));
4401
8afb0e02
NC
4402 globals = elf32_arm_hash_table (info);
4403
4404 BFD_ASSERT (globals != NULL);
4405
4406 if (globals->bfd_of_glue_owner != NULL)
b34976b6 4407 return TRUE;
8afb0e02 4408
252b5132
RH
4409 /* Save the bfd for later use. */
4410 globals->bfd_of_glue_owner = abfd;
cedb70c5 4411
b34976b6 4412 return TRUE;
252b5132
RH
4413}
4414
906e58ca
NC
4415static void
4416check_use_blx (struct elf32_arm_link_hash_table *globals)
39b41c9c 4417{
104d59d1
JM
4418 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4419 Tag_CPU_arch) > 2)
39b41c9c
PB
4420 globals->use_blx = 1;
4421}
4422
b34976b6 4423bfd_boolean
57e8b36a 4424bfd_elf32_arm_process_before_allocation (bfd *abfd,
d504ffc8 4425 struct bfd_link_info *link_info)
252b5132
RH
4426{
4427 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 4428 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH
4429 Elf_Internal_Rela *irel, *irelend;
4430 bfd_byte *contents = NULL;
252b5132
RH
4431
4432 asection *sec;
4433 struct elf32_arm_link_hash_table *globals;
4434
4435 /* If we are only performing a partial link do not bother
4436 to construct any glue. */
1049f94e 4437 if (link_info->relocatable)
b34976b6 4438 return TRUE;
252b5132 4439
39ce1a6a
NC
4440 /* Here we have a bfd that is to be included on the link. We have a
4441 hook to do reloc rummaging, before section sizes are nailed down. */
252b5132
RH
4442 globals = elf32_arm_hash_table (link_info);
4443
4444 BFD_ASSERT (globals != NULL);
39ce1a6a
NC
4445
4446 check_use_blx (globals);
252b5132 4447
d504ffc8 4448 if (globals->byteswap_code && !bfd_big_endian (abfd))
e489d0ae 4449 {
d003868e
AM
4450 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4451 abfd);
e489d0ae
PB
4452 return FALSE;
4453 }
f21f3fe0 4454
39ce1a6a
NC
4455 /* PR 5398: If we have not decided to include any loadable sections in
4456 the output then we will not have a glue owner bfd. This is OK, it
4457 just means that there is nothing else for us to do here. */
4458 if (globals->bfd_of_glue_owner == NULL)
4459 return TRUE;
4460
252b5132
RH
4461 /* Rummage around all the relocs and map the glue vectors. */
4462 sec = abfd->sections;
4463
4464 if (sec == NULL)
b34976b6 4465 return TRUE;
252b5132
RH
4466
4467 for (; sec != NULL; sec = sec->next)
4468 {
4469 if (sec->reloc_count == 0)
4470 continue;
4471
2f475487
AM
4472 if ((sec->flags & SEC_EXCLUDE) != 0)
4473 continue;
4474
0ffa91dd 4475 symtab_hdr = & elf_symtab_hdr (abfd);
252b5132 4476
9b485d32 4477 /* Load the relocs. */
6cdc0ccc 4478 internal_relocs
906e58ca 4479 = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE);
252b5132 4480
6cdc0ccc
AM
4481 if (internal_relocs == NULL)
4482 goto error_return;
252b5132 4483
6cdc0ccc
AM
4484 irelend = internal_relocs + sec->reloc_count;
4485 for (irel = internal_relocs; irel < irelend; irel++)
252b5132
RH
4486 {
4487 long r_type;
4488 unsigned long r_index;
252b5132
RH
4489
4490 struct elf_link_hash_entry *h;
4491
4492 r_type = ELF32_R_TYPE (irel->r_info);
4493 r_index = ELF32_R_SYM (irel->r_info);
4494
9b485d32 4495 /* These are the only relocation types we care about. */
ba96a88f 4496 if ( r_type != R_ARM_PC24
b7693d02 4497 && r_type != R_ARM_PLT32
5b5bb741 4498 && r_type != R_ARM_JUMP24
845b51d6
PB
4499 && r_type != R_ARM_THM_JUMP24
4500 && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
252b5132
RH
4501 continue;
4502
4503 /* Get the section contents if we haven't done so already. */
4504 if (contents == NULL)
4505 {
4506 /* Get cached copy if it exists. */
4507 if (elf_section_data (sec)->this_hdr.contents != NULL)
4508 contents = elf_section_data (sec)->this_hdr.contents;
4509 else
4510 {
4511 /* Go get them off disk. */
57e8b36a 4512 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH
4513 goto error_return;
4514 }
4515 }
4516
845b51d6
PB
4517 if (r_type == R_ARM_V4BX)
4518 {
4519 int reg;
4520
4521 reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
4522 record_arm_bx_glue (link_info, reg);
4523 continue;
4524 }
4525
a7c10850 4526 /* If the relocation is not against a symbol it cannot concern us. */
252b5132
RH
4527 h = NULL;
4528
9b485d32 4529 /* We don't care about local symbols. */
252b5132
RH
4530 if (r_index < symtab_hdr->sh_info)
4531 continue;
4532
9b485d32 4533 /* This is an external symbol. */
252b5132
RH
4534 r_index -= symtab_hdr->sh_info;
4535 h = (struct elf_link_hash_entry *)
4536 elf_sym_hashes (abfd)[r_index];
4537
4538 /* If the relocation is against a static symbol it must be within
4539 the current section and so cannot be a cross ARM/Thumb relocation. */
4540 if (h == NULL)
4541 continue;
4542
d504ffc8
DJ
4543 /* If the call will go through a PLT entry then we do not need
4544 glue. */
4545 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
b7693d02
DJ
4546 continue;
4547
252b5132
RH
4548 switch (r_type)
4549 {
4550 case R_ARM_PC24:
c6596c5e 4551 case R_ARM_PLT32:
5b5bb741 4552 case R_ARM_JUMP24:
252b5132 4553 /* This one is a call from arm code. We need to look up
2f0ca46a 4554 the target of the call. If it is a thumb target, we
252b5132 4555 insert glue. */
906e58ca 4556 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
39b41c9c 4557 && !(r_type == R_ARM_CALL && globals->use_blx))
252b5132
RH
4558 record_arm_to_thumb_glue (link_info, h);
4559 break;
4560
bd97cb95 4561 case R_ARM_THM_JUMP24:
f21f3fe0 4562 /* This one is a call from thumb code. We look
2f0ca46a 4563 up the target of the call. If it is not a thumb
bcbdc74c 4564 target, we insert glue. */
bd97cb95
DJ
4565 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
4566 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
5ab79981 4567 && h->root.type != bfd_link_hash_undefweak)
252b5132
RH
4568 record_thumb_to_arm_glue (link_info, h);
4569 break;
4570
4571 default:
c6596c5e 4572 abort ();
252b5132
RH
4573 }
4574 }
6cdc0ccc
AM
4575
4576 if (contents != NULL
4577 && elf_section_data (sec)->this_hdr.contents != contents)
4578 free (contents);
4579 contents = NULL;
4580
4581 if (internal_relocs != NULL
4582 && elf_section_data (sec)->relocs != internal_relocs)
4583 free (internal_relocs);
4584 internal_relocs = NULL;
252b5132
RH
4585 }
4586
b34976b6 4587 return TRUE;
9a5aca8c 4588
252b5132 4589error_return:
6cdc0ccc
AM
4590 if (contents != NULL
4591 && elf_section_data (sec)->this_hdr.contents != contents)
4592 free (contents);
4593 if (internal_relocs != NULL
4594 && elf_section_data (sec)->relocs != internal_relocs)
4595 free (internal_relocs);
9a5aca8c 4596
b34976b6 4597 return FALSE;
252b5132 4598}
7e392df6 4599#endif
252b5132 4600
eb043451 4601
c7b8f16e
JB
4602/* Initialise maps of ARM/Thumb/data for input BFDs. */
4603
4604void
4605bfd_elf32_arm_init_maps (bfd *abfd)
4606{
4607 Elf_Internal_Sym *isymbuf;
4608 Elf_Internal_Shdr *hdr;
4609 unsigned int i, localsyms;
4610
af1f4419
NC
4611 /* PR 7093: Make sure that we are dealing with an arm elf binary. */
4612 if (! is_arm_elf (abfd))
4613 return;
4614
c7b8f16e
JB
4615 if ((abfd->flags & DYNAMIC) != 0)
4616 return;
4617
0ffa91dd 4618 hdr = & elf_symtab_hdr (abfd);
c7b8f16e
JB
4619 localsyms = hdr->sh_info;
4620
4621 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4622 should contain the number of local symbols, which should come before any
4623 global symbols. Mapping symbols are always local. */
4624 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
4625 NULL);
4626
4627 /* No internal symbols read? Skip this BFD. */
4628 if (isymbuf == NULL)
4629 return;
4630
4631 for (i = 0; i < localsyms; i++)
4632 {
4633 Elf_Internal_Sym *isym = &isymbuf[i];
4634 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4635 const char *name;
906e58ca 4636
c7b8f16e
JB
4637 if (sec != NULL
4638 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4639 {
4640 name = bfd_elf_string_from_elf_section (abfd,
4641 hdr->sh_link, isym->st_name);
906e58ca 4642
c7b8f16e
JB
4643 if (bfd_is_arm_special_symbol_name (name,
4644 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
4645 elf32_arm_section_map_add (sec, name[1], isym->st_value);
4646 }
4647 }
4648}
4649
4650
4651void
4652bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
4653{
4654 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
104d59d1 4655 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
906e58ca 4656
c7b8f16e
JB
4657 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4658 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
4659 {
4660 switch (globals->vfp11_fix)
4661 {
4662 case BFD_ARM_VFP11_FIX_DEFAULT:
4663 case BFD_ARM_VFP11_FIX_NONE:
4664 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4665 break;
906e58ca 4666
c7b8f16e
JB
4667 default:
4668 /* Give a warning, but do as the user requests anyway. */
4669 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
4670 "workaround is not necessary for target architecture"), obfd);
4671 }
4672 }
4673 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
4674 /* For earlier architectures, we might need the workaround, but do not
4675 enable it by default. If users is running with broken hardware, they
4676 must enable the erratum fix explicitly. */
4677 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4678}
4679
4680
906e58ca
NC
4681enum bfd_arm_vfp11_pipe
4682{
c7b8f16e
JB
4683 VFP11_FMAC,
4684 VFP11_LS,
4685 VFP11_DS,
4686 VFP11_BAD
4687};
4688
4689/* Return a VFP register number. This is encoded as RX:X for single-precision
4690 registers, or X:RX for double-precision registers, where RX is the group of
4691 four bits in the instruction encoding and X is the single extension bit.
4692 RX and X fields are specified using their lowest (starting) bit. The return
4693 value is:
4694
4695 0...31: single-precision registers s0...s31
4696 32...63: double-precision registers d0...d31.
906e58ca 4697
c7b8f16e
JB
4698 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4699 encounter VFP3 instructions, so we allow the full range for DP registers. */
906e58ca 4700
c7b8f16e
JB
4701static unsigned int
4702bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
4703 unsigned int x)
4704{
4705 if (is_double)
4706 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
4707 else
4708 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
4709}
4710
4711/* Set bits in *WMASK according to a register number REG as encoded by
4712 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4713
4714static void
4715bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
4716{
4717 if (reg < 32)
4718 *wmask |= 1 << reg;
4719 else if (reg < 48)
4720 *wmask |= 3 << ((reg - 32) * 2);
4721}
4722
4723/* Return TRUE if WMASK overwrites anything in REGS. */
4724
4725static bfd_boolean
4726bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
4727{
4728 int i;
906e58ca 4729
c7b8f16e
JB
4730 for (i = 0; i < numregs; i++)
4731 {
4732 unsigned int reg = regs[i];
4733
4734 if (reg < 32 && (wmask & (1 << reg)) != 0)
4735 return TRUE;
906e58ca 4736
c7b8f16e
JB
4737 reg -= 32;
4738
4739 if (reg >= 16)
4740 continue;
906e58ca 4741
c7b8f16e
JB
4742 if ((wmask & (3 << (reg * 2))) != 0)
4743 return TRUE;
4744 }
906e58ca 4745
c7b8f16e
JB
4746 return FALSE;
4747}
4748
4749/* In this function, we're interested in two things: finding input registers
4750 for VFP data-processing instructions, and finding the set of registers which
4751 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4752 hold the written set, so FLDM etc. are easy to deal with (we're only
4753 interested in 32 SP registers or 16 dp registers, due to the VFP version
4754 implemented by the chip in question). DP registers are marked by setting
4755 both SP registers in the write mask). */
4756
4757static enum bfd_arm_vfp11_pipe
4758bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
4759 int *numregs)
4760{
4761 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
4762 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
4763
4764 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4765 {
4766 unsigned int pqrs;
4767 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4768 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4769
4770 pqrs = ((insn & 0x00800000) >> 20)
4771 | ((insn & 0x00300000) >> 19)
4772 | ((insn & 0x00000040) >> 6);
4773
4774 switch (pqrs)
4775 {
4776 case 0: /* fmac[sd]. */
4777 case 1: /* fnmac[sd]. */
4778 case 2: /* fmsc[sd]. */
4779 case 3: /* fnmsc[sd]. */
4780 pipe = VFP11_FMAC;
4781 bfd_arm_vfp11_write_mask (destmask, fd);
4782 regs[0] = fd;
4783 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4784 regs[2] = fm;
4785 *numregs = 3;
4786 break;
4787
4788 case 4: /* fmul[sd]. */
4789 case 5: /* fnmul[sd]. */
4790 case 6: /* fadd[sd]. */
4791 case 7: /* fsub[sd]. */
4792 pipe = VFP11_FMAC;
4793 goto vfp_binop;
4794
4795 case 8: /* fdiv[sd]. */
4796 pipe = VFP11_DS;
4797 vfp_binop:
4798 bfd_arm_vfp11_write_mask (destmask, fd);
4799 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4800 regs[1] = fm;
4801 *numregs = 2;
4802 break;
4803
4804 case 15: /* extended opcode. */
4805 {
4806 unsigned int extn = ((insn >> 15) & 0x1e)
4807 | ((insn >> 7) & 1);
4808
4809 switch (extn)
4810 {
4811 case 0: /* fcpy[sd]. */
4812 case 1: /* fabs[sd]. */
4813 case 2: /* fneg[sd]. */
4814 case 8: /* fcmp[sd]. */
4815 case 9: /* fcmpe[sd]. */
4816 case 10: /* fcmpz[sd]. */
4817 case 11: /* fcmpez[sd]. */
4818 case 16: /* fuito[sd]. */
4819 case 17: /* fsito[sd]. */
4820 case 24: /* ftoui[sd]. */
4821 case 25: /* ftouiz[sd]. */
4822 case 26: /* ftosi[sd]. */
4823 case 27: /* ftosiz[sd]. */
4824 /* These instructions will not bounce due to underflow. */
4825 *numregs = 0;
4826 pipe = VFP11_FMAC;
4827 break;
4828
4829 case 3: /* fsqrt[sd]. */
4830 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4831 registers to cause the erratum in previous instructions. */
4832 bfd_arm_vfp11_write_mask (destmask, fd);
4833 pipe = VFP11_DS;
4834 break;
4835
4836 case 15: /* fcvt{ds,sd}. */
4837 {
4838 int rnum = 0;
4839
4840 bfd_arm_vfp11_write_mask (destmask, fd);
4841
4842 /* Only FCVTSD can underflow. */
4843 if ((insn & 0x100) != 0)
4844 regs[rnum++] = fm;
4845
4846 *numregs = rnum;
4847
4848 pipe = VFP11_FMAC;
4849 }
4850 break;
4851
4852 default:
4853 return VFP11_BAD;
4854 }
4855 }
4856 break;
4857
4858 default:
4859 return VFP11_BAD;
4860 }
4861 }
4862 /* Two-register transfer. */
4863 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
4864 {
4865 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
906e58ca 4866
c7b8f16e
JB
4867 if ((insn & 0x100000) == 0)
4868 {
4869 if (is_double)
4870 bfd_arm_vfp11_write_mask (destmask, fm);
4871 else
4872 {
4873 bfd_arm_vfp11_write_mask (destmask, fm);
4874 bfd_arm_vfp11_write_mask (destmask, fm + 1);
4875 }
4876 }
4877
4878 pipe = VFP11_LS;
4879 }
4880 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
4881 {
4882 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4883 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
906e58ca 4884
c7b8f16e
JB
4885 switch (puw)
4886 {
4887 case 0: /* Two-reg transfer. We should catch these above. */
4888 abort ();
906e58ca 4889
c7b8f16e
JB
4890 case 2: /* fldm[sdx]. */
4891 case 3:
4892 case 5:
4893 {
4894 unsigned int i, offset = insn & 0xff;
4895
4896 if (is_double)
4897 offset >>= 1;
4898
4899 for (i = fd; i < fd + offset; i++)
4900 bfd_arm_vfp11_write_mask (destmask, i);
4901 }
4902 break;
906e58ca 4903
c7b8f16e
JB
4904 case 4: /* fld[sd]. */
4905 case 6:
4906 bfd_arm_vfp11_write_mask (destmask, fd);
4907 break;
906e58ca 4908
c7b8f16e
JB
4909 default:
4910 return VFP11_BAD;
4911 }
4912
4913 pipe = VFP11_LS;
4914 }
4915 /* Single-register transfer. Note L==0. */
4916 else if ((insn & 0x0f100e10) == 0x0e000a10)
4917 {
4918 unsigned int opcode = (insn >> 21) & 7;
4919 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
4920
4921 switch (opcode)
4922 {
4923 case 0: /* fmsr/fmdlr. */
4924 case 1: /* fmdhr. */
4925 /* Mark fmdhr and fmdlr as writing to the whole of the DP
4926 destination register. I don't know if this is exactly right,
4927 but it is the conservative choice. */
4928 bfd_arm_vfp11_write_mask (destmask, fn);
4929 break;
4930
4931 case 7: /* fmxr. */
4932 break;
4933 }
4934
4935 pipe = VFP11_LS;
4936 }
4937
4938 return pipe;
4939}
4940
4941
4942static int elf32_arm_compare_mapping (const void * a, const void * b);
4943
4944
4945/* Look for potentially-troublesome code sequences which might trigger the
4946 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
4947 (available from ARM) for details of the erratum. A short version is
4948 described in ld.texinfo. */
4949
4950bfd_boolean
4951bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
4952{
4953 asection *sec;
4954 bfd_byte *contents = NULL;
4955 int state = 0;
4956 int regs[3], numregs = 0;
4957 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
4958 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
906e58ca 4959
c7b8f16e
JB
4960 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
4961 The states transition as follows:
906e58ca 4962
c7b8f16e
JB
4963 0 -> 1 (vector) or 0 -> 2 (scalar)
4964 A VFP FMAC-pipeline instruction has been seen. Fill
4965 regs[0]..regs[numregs-1] with its input operands. Remember this
4966 instruction in 'first_fmac'.
4967
4968 1 -> 2
4969 Any instruction, except for a VFP instruction which overwrites
4970 regs[*].
906e58ca 4971
c7b8f16e
JB
4972 1 -> 3 [ -> 0 ] or
4973 2 -> 3 [ -> 0 ]
4974 A VFP instruction has been seen which overwrites any of regs[*].
4975 We must make a veneer! Reset state to 0 before examining next
4976 instruction.
906e58ca 4977
c7b8f16e
JB
4978 2 -> 0
4979 If we fail to match anything in state 2, reset to state 0 and reset
4980 the instruction pointer to the instruction after 'first_fmac'.
4981
4982 If the VFP11 vector mode is in use, there must be at least two unrelated
4983 instructions between anti-dependent VFP11 instructions to properly avoid
906e58ca 4984 triggering the erratum, hence the use of the extra state 1. */
c7b8f16e
JB
4985
4986 /* If we are only performing a partial link do not bother
4987 to construct any glue. */
4988 if (link_info->relocatable)
4989 return TRUE;
4990
0ffa91dd
NC
4991 /* Skip if this bfd does not correspond to an ELF image. */
4992 if (! is_arm_elf (abfd))
4993 return TRUE;
906e58ca 4994
c7b8f16e
JB
4995 /* We should have chosen a fix type by the time we get here. */
4996 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
4997
4998 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
4999 return TRUE;
2e6030b9 5000
33a7ffc2
JM
5001 /* Skip this BFD if it corresponds to an executable or dynamic object. */
5002 if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
5003 return TRUE;
5004
c7b8f16e
JB
5005 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5006 {
5007 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
5008 struct _arm_elf_section_data *sec_data;
5009
5010 /* If we don't have executable progbits, we're not interested in this
5011 section. Also skip if section is to be excluded. */
5012 if (elf_section_type (sec) != SHT_PROGBITS
5013 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
5014 || (sec->flags & SEC_EXCLUDE) != 0
33a7ffc2
JM
5015 || sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
5016 || sec->output_section == bfd_abs_section_ptr
c7b8f16e
JB
5017 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
5018 continue;
5019
5020 sec_data = elf32_arm_section_data (sec);
906e58ca 5021
c7b8f16e
JB
5022 if (sec_data->mapcount == 0)
5023 continue;
906e58ca 5024
c7b8f16e
JB
5025 if (elf_section_data (sec)->this_hdr.contents != NULL)
5026 contents = elf_section_data (sec)->this_hdr.contents;
5027 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
5028 goto error_return;
5029
5030 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
5031 elf32_arm_compare_mapping);
5032
5033 for (span = 0; span < sec_data->mapcount; span++)
5034 {
5035 unsigned int span_start = sec_data->map[span].vma;
5036 unsigned int span_end = (span == sec_data->mapcount - 1)
5037 ? sec->size : sec_data->map[span + 1].vma;
5038 char span_type = sec_data->map[span].type;
906e58ca 5039
c7b8f16e
JB
5040 /* FIXME: Only ARM mode is supported at present. We may need to
5041 support Thumb-2 mode also at some point. */
5042 if (span_type != 'a')
5043 continue;
5044
5045 for (i = span_start; i < span_end;)
5046 {
5047 unsigned int next_i = i + 4;
5048 unsigned int insn = bfd_big_endian (abfd)
5049 ? (contents[i] << 24)
5050 | (contents[i + 1] << 16)
5051 | (contents[i + 2] << 8)
5052 | contents[i + 3]
5053 : (contents[i + 3] << 24)
5054 | (contents[i + 2] << 16)
5055 | (contents[i + 1] << 8)
5056 | contents[i];
5057 unsigned int writemask = 0;
5058 enum bfd_arm_vfp11_pipe pipe;
5059
5060 switch (state)
5061 {
5062 case 0:
5063 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
5064 &numregs);
5065 /* I'm assuming the VFP11 erratum can trigger with denorm
5066 operands on either the FMAC or the DS pipeline. This might
5067 lead to slightly overenthusiastic veneer insertion. */
5068 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
5069 {
5070 state = use_vector ? 1 : 2;
5071 first_fmac = i;
5072 veneer_of_insn = insn;
5073 }
5074 break;
5075
5076 case 1:
5077 {
5078 int other_regs[3], other_numregs;
5079 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5080 other_regs,
5081 &other_numregs);
5082 if (pipe != VFP11_BAD
5083 && bfd_arm_vfp11_antidependency (writemask, regs,
5084 numregs))
5085 state = 3;
5086 else
5087 state = 2;
5088 }
5089 break;
5090
5091 case 2:
5092 {
5093 int other_regs[3], other_numregs;
5094 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5095 other_regs,
5096 &other_numregs);
5097 if (pipe != VFP11_BAD
5098 && bfd_arm_vfp11_antidependency (writemask, regs,
5099 numregs))
5100 state = 3;
5101 else
5102 {
5103 state = 0;
5104 next_i = first_fmac + 4;
5105 }
5106 }
5107 break;
5108
5109 case 3:
5110 abort (); /* Should be unreachable. */
5111 }
5112
5113 if (state == 3)
5114 {
5115 elf32_vfp11_erratum_list *newerr
5116 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
5117 int errcount;
5118
5119 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
5120
5121 newerr->u.b.vfp_insn = veneer_of_insn;
5122
5123 switch (span_type)
5124 {
5125 case 'a':
5126 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
5127 break;
906e58ca 5128
c7b8f16e
JB
5129 default:
5130 abort ();
5131 }
5132
5133 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
5134 first_fmac);
5135
5136 newerr->vma = -1;
5137
5138 newerr->next = sec_data->erratumlist;
5139 sec_data->erratumlist = newerr;
5140
5141 state = 0;
5142 }
5143
5144 i = next_i;
5145 }
5146 }
906e58ca 5147
c7b8f16e
JB
5148 if (contents != NULL
5149 && elf_section_data (sec)->this_hdr.contents != contents)
5150 free (contents);
5151 contents = NULL;
5152 }
5153
5154 return TRUE;
5155
5156error_return:
5157 if (contents != NULL
5158 && elf_section_data (sec)->this_hdr.contents != contents)
5159 free (contents);
906e58ca 5160
c7b8f16e
JB
5161 return FALSE;
5162}
5163
5164/* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5165 after sections have been laid out, using specially-named symbols. */
5166
5167void
5168bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
5169 struct bfd_link_info *link_info)
5170{
5171 asection *sec;
5172 struct elf32_arm_link_hash_table *globals;
5173 char *tmp_name;
906e58ca 5174
c7b8f16e
JB
5175 if (link_info->relocatable)
5176 return;
2e6030b9
MS
5177
5178 /* Skip if this bfd does not correspond to an ELF image. */
0ffa91dd 5179 if (! is_arm_elf (abfd))
2e6030b9
MS
5180 return;
5181
c7b8f16e 5182 globals = elf32_arm_hash_table (link_info);
906e58ca 5183
c7b8f16e
JB
5184 tmp_name = bfd_malloc ((bfd_size_type) strlen
5185 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
5186
5187 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5188 {
5189 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
5190 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
906e58ca 5191
c7b8f16e
JB
5192 for (; errnode != NULL; errnode = errnode->next)
5193 {
5194 struct elf_link_hash_entry *myh;
5195 bfd_vma vma;
5196
5197 switch (errnode->type)
5198 {
5199 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
5200 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
5201 /* Find veneer symbol. */
5202 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
5203 errnode->u.b.veneer->u.v.id);
5204
5205 myh = elf_link_hash_lookup
5206 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5207
5208 if (myh == NULL)
5209 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5210 "`%s'"), abfd, tmp_name);
5211
5212 vma = myh->root.u.def.section->output_section->vma
5213 + myh->root.u.def.section->output_offset
5214 + myh->root.u.def.value;
5215
5216 errnode->u.b.veneer->vma = vma;
5217 break;
5218
5219 case VFP11_ERRATUM_ARM_VENEER:
5220 case VFP11_ERRATUM_THUMB_VENEER:
5221 /* Find return location. */
5222 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
5223 errnode->u.v.id);
5224
5225 myh = elf_link_hash_lookup
5226 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5227
5228 if (myh == NULL)
5229 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5230 "`%s'"), abfd, tmp_name);
5231
5232 vma = myh->root.u.def.section->output_section->vma
5233 + myh->root.u.def.section->output_offset
5234 + myh->root.u.def.value;
5235
5236 errnode->u.v.branch->vma = vma;
5237 break;
906e58ca 5238
c7b8f16e
JB
5239 default:
5240 abort ();
5241 }
5242 }
5243 }
906e58ca 5244
c7b8f16e
JB
5245 free (tmp_name);
5246}
5247
5248
eb043451
PB
5249/* Set target relocation values needed during linking. */
5250
5251void
bf21ed78
MS
5252bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
5253 struct bfd_link_info *link_info,
eb043451 5254 int target1_is_rel,
319850b4 5255 char * target2_type,
33bfe774 5256 int fix_v4bx,
c7b8f16e 5257 int use_blx,
bf21ed78 5258 bfd_arm_vfp11_fix vfp11_fix,
a9dc9481
JM
5259 int no_enum_warn, int no_wchar_warn,
5260 int pic_veneer)
eb043451
PB
5261{
5262 struct elf32_arm_link_hash_table *globals;
5263
5264 globals = elf32_arm_hash_table (link_info);
5265
5266 globals->target1_is_rel = target1_is_rel;
5267 if (strcmp (target2_type, "rel") == 0)
5268 globals->target2_reloc = R_ARM_REL32;
eeac373a
PB
5269 else if (strcmp (target2_type, "abs") == 0)
5270 globals->target2_reloc = R_ARM_ABS32;
eb043451
PB
5271 else if (strcmp (target2_type, "got-rel") == 0)
5272 globals->target2_reloc = R_ARM_GOT_PREL;
5273 else
5274 {
5275 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5276 target2_type);
5277 }
319850b4 5278 globals->fix_v4bx = fix_v4bx;
33bfe774 5279 globals->use_blx |= use_blx;
c7b8f16e 5280 globals->vfp11_fix = vfp11_fix;
27e55c4d 5281 globals->pic_veneer = pic_veneer;
bf21ed78 5282
0ffa91dd
NC
5283 BFD_ASSERT (is_arm_elf (output_bfd));
5284 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
a9dc9481 5285 elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
eb043451 5286}
eb043451 5287
12a0a0fd 5288/* Replace the target offset of a Thumb bl or b.w instruction. */
252b5132 5289
12a0a0fd
PB
5290static void
5291insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn)
5292{
5293 bfd_vma upper;
5294 bfd_vma lower;
5295 int reloc_sign;
5296
5297 BFD_ASSERT ((offset & 1) == 0);
5298
5299 upper = bfd_get_16 (abfd, insn);
5300 lower = bfd_get_16 (abfd, insn + 2);
5301 reloc_sign = (offset < 0) ? 1 : 0;
5302 upper = (upper & ~(bfd_vma) 0x7ff)
5303 | ((offset >> 12) & 0x3ff)
5304 | (reloc_sign << 10);
906e58ca 5305 lower = (lower & ~(bfd_vma) 0x2fff)
12a0a0fd
PB
5306 | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13)
5307 | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11)
5308 | ((offset >> 1) & 0x7ff);
5309 bfd_put_16 (abfd, upper, insn);
5310 bfd_put_16 (abfd, lower, insn + 2);
252b5132
RH
5311}
5312
9b485d32
NC
5313/* Thumb code calling an ARM function. */
5314
252b5132 5315static int
57e8b36a
NC
5316elf32_thumb_to_arm_stub (struct bfd_link_info * info,
5317 const char * name,
5318 bfd * input_bfd,
5319 bfd * output_bfd,
5320 asection * input_section,
5321 bfd_byte * hit_data,
5322 asection * sym_sec,
5323 bfd_vma offset,
5324 bfd_signed_vma addend,
f2a9dd69
DJ
5325 bfd_vma val,
5326 char **error_message)
252b5132 5327{
bcbdc74c 5328 asection * s = 0;
dc810e39 5329 bfd_vma my_offset;
252b5132 5330 long int ret_offset;
bcbdc74c
NC
5331 struct elf_link_hash_entry * myh;
5332 struct elf32_arm_link_hash_table * globals;
252b5132 5333
f2a9dd69 5334 myh = find_thumb_glue (info, name, error_message);
252b5132 5335 if (myh == NULL)
b34976b6 5336 return FALSE;
252b5132
RH
5337
5338 globals = elf32_arm_hash_table (info);
5339
5340 BFD_ASSERT (globals != NULL);
5341 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5342
5343 my_offset = myh->root.u.def.value;
5344
5345 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5346 THUMB2ARM_GLUE_SECTION_NAME);
5347
5348 BFD_ASSERT (s != NULL);
5349 BFD_ASSERT (s->contents != NULL);
5350 BFD_ASSERT (s->output_section != NULL);
5351
5352 if ((my_offset & 0x01) == 0x01)
5353 {
5354 if (sym_sec != NULL
5355 && sym_sec->owner != NULL
5356 && !INTERWORK_FLAG (sym_sec->owner))
5357 {
8f615d07 5358 (*_bfd_error_handler)
d003868e
AM
5359 (_("%B(%s): warning: interworking not enabled.\n"
5360 " first occurrence: %B: thumb call to arm"),
5361 sym_sec->owner, input_bfd, name);
252b5132 5362
b34976b6 5363 return FALSE;
252b5132
RH
5364 }
5365
5366 --my_offset;
5367 myh->root.u.def.value = my_offset;
5368
52ab56c2
PB
5369 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
5370 s->contents + my_offset);
252b5132 5371
52ab56c2
PB
5372 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
5373 s->contents + my_offset + 2);
252b5132
RH
5374
5375 ret_offset =
9b485d32
NC
5376 /* Address of destination of the stub. */
5377 ((bfd_signed_vma) val)
252b5132 5378 - ((bfd_signed_vma)
57e8b36a
NC
5379 /* Offset from the start of the current section
5380 to the start of the stubs. */
9b485d32
NC
5381 (s->output_offset
5382 /* Offset of the start of this stub from the start of the stubs. */
5383 + my_offset
5384 /* Address of the start of the current section. */
5385 + s->output_section->vma)
5386 /* The branch instruction is 4 bytes into the stub. */
5387 + 4
5388 /* ARM branches work from the pc of the instruction + 8. */
5389 + 8);
252b5132 5390
52ab56c2
PB
5391 put_arm_insn (globals, output_bfd,
5392 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
5393 s->contents + my_offset + 4);
252b5132
RH
5394 }
5395
5396 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
5397
427bfd90
NC
5398 /* Now go back and fix up the original BL insn to point to here. */
5399 ret_offset =
5400 /* Address of where the stub is located. */
5401 (s->output_section->vma + s->output_offset + my_offset)
5402 /* Address of where the BL is located. */
57e8b36a
NC
5403 - (input_section->output_section->vma + input_section->output_offset
5404 + offset)
427bfd90
NC
5405 /* Addend in the relocation. */
5406 - addend
5407 /* Biassing for PC-relative addressing. */
5408 - 8;
252b5132 5409
12a0a0fd 5410 insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma);
252b5132 5411
b34976b6 5412 return TRUE;
252b5132
RH
5413}
5414
a4fd1a8e 5415/* Populate an Arm to Thumb stub. Returns the stub symbol. */
9b485d32 5416
a4fd1a8e
PB
5417static struct elf_link_hash_entry *
5418elf32_arm_create_thumb_stub (struct bfd_link_info * info,
5419 const char * name,
5420 bfd * input_bfd,
5421 bfd * output_bfd,
5422 asection * sym_sec,
5423 bfd_vma val,
8029a119
NC
5424 asection * s,
5425 char ** error_message)
252b5132 5426{
dc810e39 5427 bfd_vma my_offset;
252b5132 5428 long int ret_offset;
bcbdc74c
NC
5429 struct elf_link_hash_entry * myh;
5430 struct elf32_arm_link_hash_table * globals;
252b5132 5431
f2a9dd69 5432 myh = find_arm_glue (info, name, error_message);
252b5132 5433 if (myh == NULL)
a4fd1a8e 5434 return NULL;
252b5132
RH
5435
5436 globals = elf32_arm_hash_table (info);
5437
5438 BFD_ASSERT (globals != NULL);
5439 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5440
5441 my_offset = myh->root.u.def.value;
252b5132
RH
5442
5443 if ((my_offset & 0x01) == 0x01)
5444 {
5445 if (sym_sec != NULL
5446 && sym_sec->owner != NULL
5447 && !INTERWORK_FLAG (sym_sec->owner))
5448 {
8f615d07 5449 (*_bfd_error_handler)
d003868e
AM
5450 (_("%B(%s): warning: interworking not enabled.\n"
5451 " first occurrence: %B: arm call to thumb"),
5452 sym_sec->owner, input_bfd, name);
252b5132 5453 }
9b485d32 5454
252b5132
RH
5455 --my_offset;
5456 myh->root.u.def.value = my_offset;
5457
27e55c4d
PB
5458 if (info->shared || globals->root.is_relocatable_executable
5459 || globals->pic_veneer)
8f6277f5
PB
5460 {
5461 /* For relocatable objects we can't use absolute addresses,
5462 so construct the address from a relative offset. */
5463 /* TODO: If the offset is small it's probably worth
5464 constructing the address with adds. */
52ab56c2
PB
5465 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
5466 s->contents + my_offset);
5467 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
5468 s->contents + my_offset + 4);
5469 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
5470 s->contents + my_offset + 8);
8f6277f5
PB
5471 /* Adjust the offset by 4 for the position of the add,
5472 and 8 for the pipeline offset. */
5473 ret_offset = (val - (s->output_offset
5474 + s->output_section->vma
5475 + my_offset + 12))
5476 | 1;
5477 bfd_put_32 (output_bfd, ret_offset,
5478 s->contents + my_offset + 12);
5479 }
26079076
PB
5480 else if (globals->use_blx)
5481 {
5482 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
5483 s->contents + my_offset);
5484
5485 /* It's a thumb address. Add the low order bit. */
5486 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
5487 s->contents + my_offset + 4);
5488 }
8f6277f5
PB
5489 else
5490 {
52ab56c2
PB
5491 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
5492 s->contents + my_offset);
252b5132 5493
52ab56c2
PB
5494 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
5495 s->contents + my_offset + 4);
252b5132 5496
8f6277f5
PB
5497 /* It's a thumb address. Add the low order bit. */
5498 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
5499 s->contents + my_offset + 8);
8029a119
NC
5500
5501 my_offset += 12;
8f6277f5 5502 }
252b5132
RH
5503 }
5504
5505 BFD_ASSERT (my_offset <= globals->arm_glue_size);
5506
a4fd1a8e
PB
5507 return myh;
5508}
5509
5510/* Arm code calling a Thumb function. */
5511
5512static int
5513elf32_arm_to_thumb_stub (struct bfd_link_info * info,
5514 const char * name,
5515 bfd * input_bfd,
5516 bfd * output_bfd,
5517 asection * input_section,
5518 bfd_byte * hit_data,
5519 asection * sym_sec,
5520 bfd_vma offset,
5521 bfd_signed_vma addend,
f2a9dd69
DJ
5522 bfd_vma val,
5523 char **error_message)
a4fd1a8e
PB
5524{
5525 unsigned long int tmp;
5526 bfd_vma my_offset;
5527 asection * s;
5528 long int ret_offset;
5529 struct elf_link_hash_entry * myh;
5530 struct elf32_arm_link_hash_table * globals;
5531
5532 globals = elf32_arm_hash_table (info);
5533
5534 BFD_ASSERT (globals != NULL);
5535 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5536
5537 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5538 ARM2THUMB_GLUE_SECTION_NAME);
5539 BFD_ASSERT (s != NULL);
5540 BFD_ASSERT (s->contents != NULL);
5541 BFD_ASSERT (s->output_section != NULL);
5542
5543 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
f2a9dd69 5544 sym_sec, val, s, error_message);
a4fd1a8e
PB
5545 if (!myh)
5546 return FALSE;
5547
5548 my_offset = myh->root.u.def.value;
252b5132
RH
5549 tmp = bfd_get_32 (input_bfd, hit_data);
5550 tmp = tmp & 0xFF000000;
5551
9b485d32 5552 /* Somehow these are both 4 too far, so subtract 8. */
dc810e39
AM
5553 ret_offset = (s->output_offset
5554 + my_offset
5555 + s->output_section->vma
5556 - (input_section->output_offset
5557 + input_section->output_section->vma
5558 + offset + addend)
5559 - 8);
9a5aca8c 5560
252b5132
RH
5561 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
5562
dc810e39 5563 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
252b5132 5564
b34976b6 5565 return TRUE;
252b5132
RH
5566}
5567
a4fd1a8e
PB
5568/* Populate Arm stub for an exported Thumb function. */
5569
5570static bfd_boolean
5571elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
5572{
5573 struct bfd_link_info * info = (struct bfd_link_info *) inf;
5574 asection * s;
5575 struct elf_link_hash_entry * myh;
5576 struct elf32_arm_link_hash_entry *eh;
5577 struct elf32_arm_link_hash_table * globals;
5578 asection *sec;
5579 bfd_vma val;
f2a9dd69 5580 char *error_message;
a4fd1a8e 5581
906e58ca 5582 eh = elf32_arm_hash_entry (h);
a4fd1a8e
PB
5583 /* Allocate stubs for exported Thumb functions on v4t. */
5584 if (eh->export_glue == NULL)
5585 return TRUE;
5586
5587 globals = elf32_arm_hash_table (info);
5588
5589 BFD_ASSERT (globals != NULL);
5590 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5591
5592 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5593 ARM2THUMB_GLUE_SECTION_NAME);
5594 BFD_ASSERT (s != NULL);
5595 BFD_ASSERT (s->contents != NULL);
5596 BFD_ASSERT (s->output_section != NULL);
5597
5598 sec = eh->export_glue->root.u.def.section;
0eaedd0e
PB
5599
5600 BFD_ASSERT (sec->output_section != NULL);
5601
a4fd1a8e
PB
5602 val = eh->export_glue->root.u.def.value + sec->output_offset
5603 + sec->output_section->vma;
8029a119 5604
a4fd1a8e
PB
5605 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
5606 h->root.u.def.section->owner,
f2a9dd69
DJ
5607 globals->obfd, sec, val, s,
5608 &error_message);
a4fd1a8e
PB
5609 BFD_ASSERT (myh);
5610 return TRUE;
5611}
5612
845b51d6
PB
5613/* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5614
5615static bfd_vma
5616elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
5617{
5618 bfd_byte *p;
5619 bfd_vma glue_addr;
5620 asection *s;
5621 struct elf32_arm_link_hash_table *globals;
5622
5623 globals = elf32_arm_hash_table (info);
5624
5625 BFD_ASSERT (globals != NULL);
5626 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5627
5628 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5629 ARM_BX_GLUE_SECTION_NAME);
5630 BFD_ASSERT (s != NULL);
5631 BFD_ASSERT (s->contents != NULL);
5632 BFD_ASSERT (s->output_section != NULL);
5633
5634 BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
5635
5636 glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
5637
5638 if ((globals->bx_glue_offset[reg] & 1) == 0)
5639 {
5640 p = s->contents + glue_addr;
5641 bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
5642 bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
5643 bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
5644 globals->bx_glue_offset[reg] |= 1;
5645 }
5646
5647 return glue_addr + s->output_section->vma + s->output_offset;
5648}
5649
a4fd1a8e
PB
5650/* Generate Arm stubs for exported Thumb symbols. */
5651static void
906e58ca 5652elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
a4fd1a8e
PB
5653 struct bfd_link_info *link_info)
5654{
5655 struct elf32_arm_link_hash_table * globals;
5656
8029a119
NC
5657 if (link_info == NULL)
5658 /* Ignore this if we are not called by the ELF backend linker. */
a4fd1a8e
PB
5659 return;
5660
5661 globals = elf32_arm_hash_table (link_info);
84c08195
PB
5662 /* If blx is available then exported Thumb symbols are OK and there is
5663 nothing to do. */
a4fd1a8e
PB
5664 if (globals->use_blx)
5665 return;
5666
5667 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
5668 link_info);
5669}
5670
eb043451
PB
5671/* Some relocations map to different relocations depending on the
5672 target. Return the real relocation. */
8029a119 5673
eb043451
PB
5674static int
5675arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
5676 int r_type)
5677{
5678 switch (r_type)
5679 {
5680 case R_ARM_TARGET1:
5681 if (globals->target1_is_rel)
5682 return R_ARM_REL32;
5683 else
5684 return R_ARM_ABS32;
5685
5686 case R_ARM_TARGET2:
5687 return globals->target2_reloc;
5688
5689 default:
5690 return r_type;
5691 }
5692}
eb043451 5693
ba93b8ac
DJ
5694/* Return the base VMA address which should be subtracted from real addresses
5695 when resolving @dtpoff relocation.
5696 This is PT_TLS segment p_vaddr. */
5697
5698static bfd_vma
5699dtpoff_base (struct bfd_link_info *info)
5700{
5701 /* If tls_sec is NULL, we should have signalled an error already. */
5702 if (elf_hash_table (info)->tls_sec == NULL)
5703 return 0;
5704 return elf_hash_table (info)->tls_sec->vma;
5705}
5706
5707/* Return the relocation value for @tpoff relocation
5708 if STT_TLS virtual address is ADDRESS. */
5709
5710static bfd_vma
5711tpoff (struct bfd_link_info *info, bfd_vma address)
5712{
5713 struct elf_link_hash_table *htab = elf_hash_table (info);
5714 bfd_vma base;
5715
5716 /* If tls_sec is NULL, we should have signalled an error already. */
5717 if (htab->tls_sec == NULL)
5718 return 0;
5719 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
5720 return address - htab->tls_sec->vma + base;
5721}
5722
00a97672
RS
5723/* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5724 VALUE is the relocation value. */
5725
5726static bfd_reloc_status_type
5727elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
5728{
5729 if (value > 0xfff)
5730 return bfd_reloc_overflow;
5731
5732 value |= bfd_get_32 (abfd, data) & 0xfffff000;
5733 bfd_put_32 (abfd, value, data);
5734 return bfd_reloc_ok;
5735}
5736
4962c51a
MS
5737/* For a given value of n, calculate the value of G_n as required to
5738 deal with group relocations. We return it in the form of an
5739 encoded constant-and-rotation, together with the final residual. If n is
5740 specified as less than zero, then final_residual is filled with the
5741 input value and no further action is performed. */
5742
5743static bfd_vma
5744calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
5745{
5746 int current_n;
5747 bfd_vma g_n;
5748 bfd_vma encoded_g_n = 0;
5749 bfd_vma residual = value; /* Also known as Y_n. */
5750
5751 for (current_n = 0; current_n <= n; current_n++)
5752 {
5753 int shift;
5754
5755 /* Calculate which part of the value to mask. */
5756 if (residual == 0)
5757 shift = 0;
5758 else
5759 {
5760 int msb;
5761
5762 /* Determine the most significant bit in the residual and
5763 align the resulting value to a 2-bit boundary. */
5764 for (msb = 30; msb >= 0; msb -= 2)
5765 if (residual & (3 << msb))
5766 break;
5767
5768 /* The desired shift is now (msb - 6), or zero, whichever
5769 is the greater. */
5770 shift = msb - 6;
5771 if (shift < 0)
5772 shift = 0;
5773 }
5774
5775 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5776 g_n = residual & (0xff << shift);
5777 encoded_g_n = (g_n >> shift)
5778 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
5779
5780 /* Calculate the residual for the next time around. */
5781 residual &= ~g_n;
5782 }
5783
5784 *final_residual = residual;
5785
5786 return encoded_g_n;
5787}
5788
5789/* Given an ARM instruction, determine whether it is an ADD or a SUB.
5790 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
906e58ca 5791
4962c51a 5792static int
906e58ca 5793identify_add_or_sub (bfd_vma insn)
4962c51a
MS
5794{
5795 int opcode = insn & 0x1e00000;
5796
5797 if (opcode == 1 << 23) /* ADD */
5798 return 1;
5799
5800 if (opcode == 1 << 22) /* SUB */
5801 return -1;
5802
5803 return 0;
5804}
5805
252b5132 5806/* Perform a relocation as part of a final link. */
9b485d32 5807
252b5132 5808static bfd_reloc_status_type
57e8b36a
NC
5809elf32_arm_final_link_relocate (reloc_howto_type * howto,
5810 bfd * input_bfd,
5811 bfd * output_bfd,
5812 asection * input_section,
5813 bfd_byte * contents,
5814 Elf_Internal_Rela * rel,
5815 bfd_vma value,
5816 struct bfd_link_info * info,
5817 asection * sym_sec,
5818 const char * sym_name,
5819 int sym_flags,
0945cdfd 5820 struct elf_link_hash_entry * h,
f2a9dd69 5821 bfd_boolean * unresolved_reloc_p,
8029a119 5822 char ** error_message)
252b5132
RH
5823{
5824 unsigned long r_type = howto->type;
5825 unsigned long r_symndx;
5826 bfd_byte * hit_data = contents + rel->r_offset;
5827 bfd * dynobj = NULL;
5828 Elf_Internal_Shdr * symtab_hdr;
5829 struct elf_link_hash_entry ** sym_hashes;
5830 bfd_vma * local_got_offsets;
5831 asection * sgot = NULL;
5832 asection * splt = NULL;
5833 asection * sreloc = NULL;
252b5132 5834 bfd_vma addend;
ba96a88f
NC
5835 bfd_signed_vma signed_addend;
5836 struct elf32_arm_link_hash_table * globals;
f21f3fe0 5837
9c504268
PB
5838 globals = elf32_arm_hash_table (info);
5839
0ffa91dd
NC
5840 BFD_ASSERT (is_arm_elf (input_bfd));
5841
5842 /* Some relocation types map to different relocations depending on the
9c504268 5843 target. We pick the right one here. */
eb043451
PB
5844 r_type = arm_real_reloc_type (globals, r_type);
5845 if (r_type != howto->type)
5846 howto = elf32_arm_howto_from_type (r_type);
9c504268 5847
cac15327
NC
5848 /* If the start address has been set, then set the EF_ARM_HASENTRY
5849 flag. Setting this more than once is redundant, but the cost is
5850 not too high, and it keeps the code simple.
99e4ae17 5851
cac15327
NC
5852 The test is done here, rather than somewhere else, because the
5853 start address is only set just before the final link commences.
5854
5855 Note - if the user deliberately sets a start address of 0, the
5856 flag will not be set. */
5857 if (bfd_get_start_address (output_bfd) != 0)
5858 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
99e4ae17 5859
252b5132
RH
5860 dynobj = elf_hash_table (info)->dynobj;
5861 if (dynobj)
5862 {
5863 sgot = bfd_get_section_by_name (dynobj, ".got");
5864 splt = bfd_get_section_by_name (dynobj, ".plt");
5865 }
0ffa91dd 5866 symtab_hdr = & elf_symtab_hdr (input_bfd);
252b5132
RH
5867 sym_hashes = elf_sym_hashes (input_bfd);
5868 local_got_offsets = elf_local_got_offsets (input_bfd);
5869 r_symndx = ELF32_R_SYM (rel->r_info);
5870
4e7fd91e 5871 if (globals->use_rel)
ba96a88f 5872 {
4e7fd91e
PB
5873 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
5874
5875 if (addend & ((howto->src_mask + 1) >> 1))
5876 {
5877 signed_addend = -1;
5878 signed_addend &= ~ howto->src_mask;
5879 signed_addend |= addend;
5880 }
5881 else
5882 signed_addend = addend;
ba96a88f
NC
5883 }
5884 else
4e7fd91e 5885 addend = signed_addend = rel->r_addend;
f21f3fe0 5886
252b5132
RH
5887 switch (r_type)
5888 {
5889 case R_ARM_NONE:
28a094c2
DJ
5890 /* We don't need to find a value for this symbol. It's just a
5891 marker. */
5892 *unresolved_reloc_p = FALSE;
252b5132
RH
5893 return bfd_reloc_ok;
5894
00a97672
RS
5895 case R_ARM_ABS12:
5896 if (!globals->vxworks_p)
5897 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
5898
252b5132
RH
5899 case R_ARM_PC24:
5900 case R_ARM_ABS32:
bb224fc3 5901 case R_ARM_ABS32_NOI:
252b5132 5902 case R_ARM_REL32:
bb224fc3 5903 case R_ARM_REL32_NOI:
5b5bb741
PB
5904 case R_ARM_CALL:
5905 case R_ARM_JUMP24:
dfc5f959 5906 case R_ARM_XPC25:
eb043451 5907 case R_ARM_PREL31:
7359ea65 5908 case R_ARM_PLT32:
7359ea65
DJ
5909 /* Handle relocations which should use the PLT entry. ABS32/REL32
5910 will use the symbol's value, which may point to a PLT entry, but we
5911 don't need to handle that here. If we created a PLT entry, all
5912 branches in this object should go to it. */
bb224fc3
MS
5913 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
5914 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
7359ea65 5915 && h != NULL
c84cd8ee 5916 && splt != NULL
7359ea65
DJ
5917 && h->plt.offset != (bfd_vma) -1)
5918 {
c84cd8ee
DJ
5919 /* If we've created a .plt section, and assigned a PLT entry to
5920 this function, it should not be known to bind locally. If
5921 it were, we would have cleared the PLT entry. */
7359ea65
DJ
5922 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
5923
5924 value = (splt->output_section->vma
5925 + splt->output_offset
5926 + h->plt.offset);
0945cdfd 5927 *unresolved_reloc_p = FALSE;
7359ea65
DJ
5928 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5929 contents, rel->r_offset, value,
00a97672 5930 rel->r_addend);
7359ea65
DJ
5931 }
5932
67687978
PB
5933 /* When generating a shared object or relocatable executable, these
5934 relocations are copied into the output file to be resolved at
5935 run time. */
5936 if ((info->shared || globals->root.is_relocatable_executable)
7359ea65 5937 && (input_section->flags & SEC_ALLOC)
3348747a
NS
5938 && !(elf32_arm_hash_table (info)->vxworks_p
5939 && strcmp (input_section->output_section->name,
5940 ".tls_vars") == 0)
bb224fc3 5941 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
ee06dc07 5942 || !SYMBOL_CALLS_LOCAL (info, h))
7359ea65
DJ
5943 && (h == NULL
5944 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5945 || h->root.type != bfd_link_hash_undefweak)
5946 && r_type != R_ARM_PC24
5b5bb741
PB
5947 && r_type != R_ARM_CALL
5948 && r_type != R_ARM_JUMP24
ee06dc07 5949 && r_type != R_ARM_PREL31
7359ea65 5950 && r_type != R_ARM_PLT32)
252b5132 5951 {
947216bf
AM
5952 Elf_Internal_Rela outrel;
5953 bfd_byte *loc;
b34976b6 5954 bfd_boolean skip, relocate;
f21f3fe0 5955
0945cdfd
DJ
5956 *unresolved_reloc_p = FALSE;
5957
252b5132
RH
5958 if (sreloc == NULL)
5959 {
83bac4b0
NC
5960 sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section,
5961 ! globals->use_rel);
f21f3fe0 5962
83bac4b0 5963 if (sreloc == NULL)
252b5132 5964 return bfd_reloc_notsupported;
252b5132 5965 }
f21f3fe0 5966
b34976b6
AM
5967 skip = FALSE;
5968 relocate = FALSE;
f21f3fe0 5969
00a97672 5970 outrel.r_addend = addend;
c629eae0
JJ
5971 outrel.r_offset =
5972 _bfd_elf_section_offset (output_bfd, info, input_section,
5973 rel->r_offset);
5974 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 5975 skip = TRUE;
0bb2d96a 5976 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 5977 skip = TRUE, relocate = TRUE;
252b5132
RH
5978 outrel.r_offset += (input_section->output_section->vma
5979 + input_section->output_offset);
f21f3fe0 5980
252b5132 5981 if (skip)
0bb2d96a 5982 memset (&outrel, 0, sizeof outrel);
5e681ec4
PB
5983 else if (h != NULL
5984 && h->dynindx != -1
7359ea65 5985 && (!info->shared
5e681ec4 5986 || !info->symbolic
f5385ebf 5987 || !h->def_regular))
5e681ec4 5988 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH
5989 else
5990 {
a16385dc
MM
5991 int symbol;
5992
5e681ec4 5993 /* This symbol is local, or marked to become local. */
b7693d02
DJ
5994 if (sym_flags == STT_ARM_TFUNC)
5995 value |= 1;
a16385dc 5996 if (globals->symbian_p)
6366ff1e 5997 {
74541ad4
AM
5998 asection *osec;
5999
6366ff1e
MM
6000 /* On Symbian OS, the data segment and text segement
6001 can be relocated independently. Therefore, we
6002 must indicate the segment to which this
6003 relocation is relative. The BPABI allows us to
6004 use any symbol in the right segment; we just use
6005 the section symbol as it is convenient. (We
6006 cannot use the symbol given by "h" directly as it
74541ad4
AM
6007 will not appear in the dynamic symbol table.)
6008
6009 Note that the dynamic linker ignores the section
6010 symbol value, so we don't subtract osec->vma
6011 from the emitted reloc addend. */
10dbd1f3 6012 if (sym_sec)
74541ad4 6013 osec = sym_sec->output_section;
10dbd1f3 6014 else
74541ad4
AM
6015 osec = input_section->output_section;
6016 symbol = elf_section_data (osec)->dynindx;
6017 if (symbol == 0)
6018 {
6019 struct elf_link_hash_table *htab = elf_hash_table (info);
6020
6021 if ((osec->flags & SEC_READONLY) == 0
6022 && htab->data_index_section != NULL)
6023 osec = htab->data_index_section;
6024 else
6025 osec = htab->text_index_section;
6026 symbol = elf_section_data (osec)->dynindx;
6027 }
6366ff1e
MM
6028 BFD_ASSERT (symbol != 0);
6029 }
a16385dc
MM
6030 else
6031 /* On SVR4-ish systems, the dynamic loader cannot
6032 relocate the text and data segments independently,
6033 so the symbol does not matter. */
6034 symbol = 0;
6035 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
00a97672
RS
6036 if (globals->use_rel)
6037 relocate = TRUE;
6038 else
6039 outrel.r_addend += value;
252b5132 6040 }
f21f3fe0 6041
947216bf 6042 loc = sreloc->contents;
00a97672
RS
6043 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
6044 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
9a5aca8c 6045
f21f3fe0 6046 /* If this reloc is against an external symbol, we do not want to
252b5132 6047 fiddle with the addend. Otherwise, we need to include the symbol
9b485d32 6048 value so that it becomes an addend for the dynamic reloc. */
252b5132
RH
6049 if (! relocate)
6050 return bfd_reloc_ok;
9a5aca8c 6051
f21f3fe0 6052 return _bfd_final_link_relocate (howto, input_bfd, input_section,
252b5132
RH
6053 contents, rel->r_offset, value,
6054 (bfd_vma) 0);
6055 }
6056 else switch (r_type)
6057 {
00a97672
RS
6058 case R_ARM_ABS12:
6059 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
6060
dfc5f959 6061 case R_ARM_XPC25: /* Arm BLX instruction. */
5b5bb741
PB
6062 case R_ARM_CALL:
6063 case R_ARM_JUMP24:
8029a119 6064 case R_ARM_PC24: /* Arm B/BL instruction. */
7359ea65 6065 case R_ARM_PLT32:
906e58ca
NC
6066 {
6067 bfd_vma from;
6068 bfd_signed_vma branch_offset;
6069 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6070
6071 from = (input_section->output_section->vma
6072 + input_section->output_offset
6073 + rel->r_offset);
6074 branch_offset = (bfd_signed_vma)(value - from);
6075
dfc5f959 6076 if (r_type == R_ARM_XPC25)
252b5132 6077 {
dfc5f959
NC
6078 /* Check for Arm calling Arm function. */
6079 /* FIXME: Should we translate the instruction into a BL
6080 instruction instead ? */
6081 if (sym_flags != STT_ARM_TFUNC)
d003868e
AM
6082 (*_bfd_error_handler)
6083 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6084 input_bfd,
6085 h ? h->root.root.string : "(local)");
dfc5f959 6086 }
906e58ca 6087 else if (r_type != R_ARM_CALL)
dfc5f959
NC
6088 {
6089 /* Check for Arm calling Thumb function. */
6090 if (sym_flags == STT_ARM_TFUNC)
6091 {
f2a9dd69
DJ
6092 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
6093 output_bfd, input_section,
6094 hit_data, sym_sec, rel->r_offset,
6095 signed_addend, value,
6096 error_message))
6097 return bfd_reloc_ok;
6098 else
6099 return bfd_reloc_dangerous;
dfc5f959 6100 }
252b5132 6101 }
ba96a88f 6102
906e58ca 6103 /* Check if a stub has to be inserted because the
8029a119 6104 destination is too far or we are changing mode. */
906e58ca
NC
6105 if (r_type == R_ARM_CALL)
6106 {
6107 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
6108 || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET
6109 || sym_flags == STT_ARM_TFUNC)
6110 {
6111 /* The target is out of reach, so redirect the
6112 branch to the local stub for this function. */
6113
6114 stub_entry = elf32_arm_get_stub_entry (input_section,
6115 sym_sec, h,
6116 rel, globals);
6117 if (stub_entry != NULL)
6118 value = (stub_entry->stub_offset
6119 + stub_entry->stub_sec->output_offset
6120 + stub_entry->stub_sec->output_section->vma);
6121 }
6122 }
6123
dea514f5
PB
6124 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6125 where:
6126 S is the address of the symbol in the relocation.
6127 P is address of the instruction being relocated.
6128 A is the addend (extracted from the instruction) in bytes.
6129
6130 S is held in 'value'.
6131 P is the base address of the section containing the
6132 instruction plus the offset of the reloc into that
6133 section, ie:
6134 (input_section->output_section->vma +
6135 input_section->output_offset +
6136 rel->r_offset).
6137 A is the addend, converted into bytes, ie:
6138 (signed_addend * 4)
6139
6140 Note: None of these operations have knowledge of the pipeline
6141 size of the processor, thus it is up to the assembler to
6142 encode this information into the addend. */
6143 value -= (input_section->output_section->vma
6144 + input_section->output_offset);
6145 value -= rel->r_offset;
4e7fd91e
PB
6146 if (globals->use_rel)
6147 value += (signed_addend << howto->size);
6148 else
6149 /* RELA addends do not have to be adjusted by howto->size. */
6150 value += signed_addend;
23080146 6151
dcb5e6e6
NC
6152 signed_addend = value;
6153 signed_addend >>= howto->rightshift;
9a5aca8c 6154
5ab79981
PB
6155 /* A branch to an undefined weak symbol is turned into a jump to
6156 the next instruction. */
6157 if (h && h->root.type == bfd_link_hash_undefweak)
6158 {
6159 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
6160 | 0x0affffff;
6161 }
6162 else
59f2c4e7 6163 {
9b485d32 6164 /* Perform a signed range check. */
dcb5e6e6 6165 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
59f2c4e7
NC
6166 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
6167 return bfd_reloc_overflow;
9a5aca8c 6168
5ab79981 6169 addend = (value & 2);
39b41c9c 6170
5ab79981
PB
6171 value = (signed_addend & howto->dst_mask)
6172 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
39b41c9c 6173
5ab79981 6174 /* Set the H bit in the BLX instruction. */
39b41c9c 6175 if (sym_flags == STT_ARM_TFUNC)
39b41c9c 6176 {
5ab79981
PB
6177 if (addend)
6178 value |= (1 << 24);
6179 else
6180 value &= ~(bfd_vma)(1 << 24);
6181 }
6182 if (r_type == R_ARM_CALL)
6183 {
6184 /* Select the correct instruction (BL or BLX). */
906e58ca 6185 /* Only if we are not handling a BL to a stub. In this
8029a119 6186 case, mode switching is performed by the stub. */
906e58ca 6187 if (sym_flags == STT_ARM_TFUNC && !stub_entry)
5ab79981
PB
6188 value |= (1 << 28);
6189 else
6190 {
6191 value &= ~(bfd_vma)(1 << 28);
6192 value |= (1 << 24);
6193 }
39b41c9c
PB
6194 }
6195 }
906e58ca 6196 }
252b5132 6197 break;
f21f3fe0 6198
252b5132
RH
6199 case R_ARM_ABS32:
6200 value += addend;
6201 if (sym_flags == STT_ARM_TFUNC)
6202 value |= 1;
6203 break;
f21f3fe0 6204
bb224fc3
MS
6205 case R_ARM_ABS32_NOI:
6206 value += addend;
6207 break;
6208
252b5132 6209 case R_ARM_REL32:
a8bc6c78
PB
6210 value += addend;
6211 if (sym_flags == STT_ARM_TFUNC)
6212 value |= 1;
252b5132 6213 value -= (input_section->output_section->vma
62efb346 6214 + input_section->output_offset + rel->r_offset);
252b5132 6215 break;
eb043451 6216
bb224fc3
MS
6217 case R_ARM_REL32_NOI:
6218 value += addend;
6219 value -= (input_section->output_section->vma
6220 + input_section->output_offset + rel->r_offset);
6221 break;
6222
eb043451
PB
6223 case R_ARM_PREL31:
6224 value -= (input_section->output_section->vma
6225 + input_section->output_offset + rel->r_offset);
6226 value += signed_addend;
6227 if (! h || h->root.type != bfd_link_hash_undefweak)
6228 {
8029a119 6229 /* Check for overflow. */
eb043451
PB
6230 if ((value ^ (value >> 1)) & (1 << 30))
6231 return bfd_reloc_overflow;
6232 }
6233 value &= 0x7fffffff;
6234 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
6235 if (sym_flags == STT_ARM_TFUNC)
6236 value |= 1;
6237 break;
252b5132 6238 }
f21f3fe0 6239
252b5132
RH
6240 bfd_put_32 (input_bfd, value, hit_data);
6241 return bfd_reloc_ok;
6242
6243 case R_ARM_ABS8:
6244 value += addend;
6245 if ((long) value > 0x7f || (long) value < -0x80)
6246 return bfd_reloc_overflow;
6247
6248 bfd_put_8 (input_bfd, value, hit_data);
6249 return bfd_reloc_ok;
6250
6251 case R_ARM_ABS16:
6252 value += addend;
6253
6254 if ((long) value > 0x7fff || (long) value < -0x8000)
6255 return bfd_reloc_overflow;
6256
6257 bfd_put_16 (input_bfd, value, hit_data);
6258 return bfd_reloc_ok;
6259
252b5132 6260 case R_ARM_THM_ABS5:
9b485d32 6261 /* Support ldr and str instructions for the thumb. */
4e7fd91e
PB
6262 if (globals->use_rel)
6263 {
6264 /* Need to refetch addend. */
6265 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6266 /* ??? Need to determine shift amount from operand size. */
6267 addend >>= howto->rightshift;
6268 }
252b5132
RH
6269 value += addend;
6270
6271 /* ??? Isn't value unsigned? */
6272 if ((long) value > 0x1f || (long) value < -0x10)
6273 return bfd_reloc_overflow;
6274
6275 /* ??? Value needs to be properly shifted into place first. */
6276 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
6277 bfd_put_16 (input_bfd, value, hit_data);
6278 return bfd_reloc_ok;
6279
2cab6cc3
MS
6280 case R_ARM_THM_ALU_PREL_11_0:
6281 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6282 {
6283 bfd_vma insn;
6284 bfd_signed_vma relocation;
6285
6286 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6287 | bfd_get_16 (input_bfd, hit_data + 2);
6288
6289 if (globals->use_rel)
6290 {
6291 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
6292 | ((insn & (1 << 26)) >> 15);
6293 if (insn & 0xf00000)
6294 signed_addend = -signed_addend;
6295 }
6296
6297 relocation = value + signed_addend;
6298 relocation -= (input_section->output_section->vma
6299 + input_section->output_offset
6300 + rel->r_offset);
6301
6302 value = abs (relocation);
6303
6304 if (value >= 0x1000)
6305 return bfd_reloc_overflow;
6306
6307 insn = (insn & 0xfb0f8f00) | (value & 0xff)
6308 | ((value & 0x700) << 4)
6309 | ((value & 0x800) << 15);
6310 if (relocation < 0)
6311 insn |= 0xa00000;
6312
6313 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6314 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6315
6316 return bfd_reloc_ok;
6317 }
6318
6319 case R_ARM_THM_PC12:
6320 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6321 {
6322 bfd_vma insn;
6323 bfd_signed_vma relocation;
6324
6325 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6326 | bfd_get_16 (input_bfd, hit_data + 2);
6327
6328 if (globals->use_rel)
6329 {
6330 signed_addend = insn & 0xfff;
6331 if (!(insn & (1 << 23)))
6332 signed_addend = -signed_addend;
6333 }
6334
6335 relocation = value + signed_addend;
6336 relocation -= (input_section->output_section->vma
6337 + input_section->output_offset
6338 + rel->r_offset);
6339
6340 value = abs (relocation);
6341
6342 if (value >= 0x1000)
6343 return bfd_reloc_overflow;
6344
6345 insn = (insn & 0xff7ff000) | value;
6346 if (relocation >= 0)
6347 insn |= (1 << 23);
6348
6349 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6350 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6351
6352 return bfd_reloc_ok;
6353 }
6354
dfc5f959 6355 case R_ARM_THM_XPC22:
c19d1205 6356 case R_ARM_THM_CALL:
bd97cb95 6357 case R_ARM_THM_JUMP24:
dfc5f959 6358 /* Thumb BL (branch long instruction). */
252b5132 6359 {
b34976b6 6360 bfd_vma relocation;
e95de063 6361 bfd_vma reloc_sign;
b34976b6
AM
6362 bfd_boolean overflow = FALSE;
6363 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6364 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
e95de063
MS
6365 bfd_signed_vma reloc_signed_max;
6366 bfd_signed_vma reloc_signed_min;
b34976b6 6367 bfd_vma check;
252b5132 6368 bfd_signed_vma signed_check;
e95de063
MS
6369 int bitsize;
6370 int thumb2 = using_thumb2 (globals);
252b5132 6371
5ab79981 6372 /* A branch to an undefined weak symbol is turned into a jump to
19540007
JM
6373 the next instruction unless a PLT entry will be created. */
6374 if (h && h->root.type == bfd_link_hash_undefweak
6375 && !(splt != NULL && h->plt.offset != (bfd_vma) -1))
5ab79981
PB
6376 {
6377 bfd_put_16 (input_bfd, 0xe000, hit_data);
6378 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
6379 return bfd_reloc_ok;
6380 }
6381
e95de063
MS
6382 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6383 with Thumb-1) involving the J1 and J2 bits. */
4e7fd91e
PB
6384 if (globals->use_rel)
6385 {
e95de063
MS
6386 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
6387 bfd_vma upper = upper_insn & 0x3ff;
6388 bfd_vma lower = lower_insn & 0x7ff;
6389 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
6390 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
6391 bfd_vma i1 = j1 ^ s ? 0 : 1;
6392 bfd_vma i2 = j2 ^ s ? 0 : 1;
6393
6394 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
6395 /* Sign extend. */
6396 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
6397
4e7fd91e
PB
6398 signed_addend = addend;
6399 }
cb1afa5c 6400
dfc5f959
NC
6401 if (r_type == R_ARM_THM_XPC22)
6402 {
6403 /* Check for Thumb to Thumb call. */
6404 /* FIXME: Should we translate the instruction into a BL
6405 instruction instead ? */
6406 if (sym_flags == STT_ARM_TFUNC)
d003868e
AM
6407 (*_bfd_error_handler)
6408 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6409 input_bfd,
6410 h ? h->root.root.string : "(local)");
dfc5f959
NC
6411 }
6412 else
252b5132 6413 {
dfc5f959
NC
6414 /* If it is not a call to Thumb, assume call to Arm.
6415 If it is a call relative to a section name, then it is not a
b7693d02
DJ
6416 function call at all, but rather a long jump. Calls through
6417 the PLT do not require stubs. */
6418 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
6419 && (h == NULL || splt == NULL
6420 || h->plt.offset == (bfd_vma) -1))
dfc5f959 6421 {
bd97cb95 6422 if (globals->use_blx && r_type == R_ARM_THM_CALL)
39b41c9c
PB
6423 {
6424 /* Convert BL to BLX. */
6425 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6426 }
8029a119
NC
6427 else if (r_type != R_ARM_THM_CALL)
6428 {
6429 if (elf32_thumb_to_arm_stub
6430 (info, sym_name, input_bfd, output_bfd, input_section,
6431 hit_data, sym_sec, rel->r_offset, signed_addend, value,
6432 error_message))
6433 return bfd_reloc_ok;
6434 else
6435 return bfd_reloc_dangerous;
6436 }
da5938a2 6437 }
bd97cb95
DJ
6438 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
6439 && r_type == R_ARM_THM_CALL)
39b41c9c
PB
6440 {
6441 /* Make sure this is a BL. */
6442 lower_insn |= 0x1800;
6443 }
252b5132 6444 }
f21f3fe0 6445
b7693d02
DJ
6446 /* Handle calls via the PLT. */
6447 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6448 {
6449 value = (splt->output_section->vma
6450 + splt->output_offset
6451 + h->plt.offset);
bd97cb95 6452 if (globals->use_blx && r_type == R_ARM_THM_CALL)
33bfe774
JB
6453 {
6454 /* If the Thumb BLX instruction is available, convert the
6455 BL to a BLX instruction to call the ARM-mode PLT entry. */
39b41c9c 6456 lower_insn = (lower_insn & ~0x1000) | 0x0800;
33bfe774
JB
6457 }
6458 else
6459 /* Target the Thumb stub before the ARM PLT entry. */
6460 value -= PLT_THUMB_STUB_SIZE;
0945cdfd 6461 *unresolved_reloc_p = FALSE;
b7693d02
DJ
6462 }
6463
906e58ca
NC
6464 if (r_type == R_ARM_THM_CALL)
6465 {
6466 /* Check if a stub has to be inserted because the destination
8029a119 6467 is too far. */
906e58ca
NC
6468 bfd_vma from;
6469 bfd_signed_vma branch_offset;
6470 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6471
6472 from = (input_section->output_section->vma
6473 + input_section->output_offset
6474 + rel->r_offset);
6475 branch_offset = (bfd_signed_vma)(value - from);
6476
6477 if ((!thumb2
6478 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
6479 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
6480 ||
6481 (thumb2
6482 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
f4ac8484
DJ
6483 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
6484 || ((sym_flags != STT_ARM_TFUNC) && !globals->use_blx))
906e58ca
NC
6485 {
6486 /* The target is out of reach or we are changing modes, so
6487 redirect the branch to the local stub for this
6488 function. */
6489 stub_entry = elf32_arm_get_stub_entry (input_section,
6490 sym_sec, h,
6491 rel, globals);
6492 if (stub_entry != NULL)
6493 value = (stub_entry->stub_offset
6494 + stub_entry->stub_sec->output_offset
6495 + stub_entry->stub_sec->output_section->vma);
6496
f4ac8484
DJ
6497 /* If this call becomes a call to Arm, force BLX. */
6498 if (globals->use_blx)
6499 {
6500 if ((stub_entry
6501 && !arm_stub_is_thumb (stub_entry->stub_type))
6502 || (sym_flags != STT_ARM_TFUNC))
6503 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6504 }
906e58ca
NC
6505 }
6506 }
6507
ba96a88f 6508 relocation = value + signed_addend;
f21f3fe0 6509
252b5132 6510 relocation -= (input_section->output_section->vma
ba96a88f
NC
6511 + input_section->output_offset
6512 + rel->r_offset);
9a5aca8c 6513
252b5132
RH
6514 check = relocation >> howto->rightshift;
6515
6516 /* If this is a signed value, the rightshift just dropped
6517 leading 1 bits (assuming twos complement). */
6518 if ((bfd_signed_vma) relocation >= 0)
6519 signed_check = check;
6520 else
6521 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
6522
e95de063
MS
6523 /* Calculate the permissable maximum and minimum values for
6524 this relocation according to whether we're relocating for
6525 Thumb-2 or not. */
6526 bitsize = howto->bitsize;
6527 if (!thumb2)
6528 bitsize -= 2;
6529 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
6530 reloc_signed_min = ~reloc_signed_max;
6531
252b5132 6532 /* Assumes two's complement. */
ba96a88f 6533 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
b34976b6 6534 overflow = TRUE;
252b5132 6535
bd97cb95 6536 if ((lower_insn & 0x5000) == 0x4000)
c62e1cc3
NC
6537 /* For a BLX instruction, make sure that the relocation is rounded up
6538 to a word boundary. This follows the semantics of the instruction
6539 which specifies that bit 1 of the target address will come from bit
6540 1 of the base address. */
6541 relocation = (relocation + 2) & ~ 3;
cb1afa5c 6542
e95de063
MS
6543 /* Put RELOCATION back into the insn. Assumes two's complement.
6544 We use the Thumb-2 encoding, which is safe even if dealing with
6545 a Thumb-1 instruction by virtue of our overflow check above. */
6546 reloc_sign = (signed_check < 0) ? 1 : 0;
6547 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
6548 | ((relocation >> 12) & 0x3ff)
6549 | (reloc_sign << 10);
906e58ca 6550 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
e95de063
MS
6551 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
6552 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
6553 | ((relocation >> 1) & 0x7ff);
c62e1cc3 6554
252b5132
RH
6555 /* Put the relocated value back in the object file: */
6556 bfd_put_16 (input_bfd, upper_insn, hit_data);
6557 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6558
6559 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6560 }
6561 break;
6562
c19d1205
ZW
6563 case R_ARM_THM_JUMP19:
6564 /* Thumb32 conditional branch instruction. */
6565 {
6566 bfd_vma relocation;
6567 bfd_boolean overflow = FALSE;
6568 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6569 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
a00a1f35
MS
6570 bfd_signed_vma reloc_signed_max = 0xffffe;
6571 bfd_signed_vma reloc_signed_min = -0x100000;
c19d1205
ZW
6572 bfd_signed_vma signed_check;
6573
6574 /* Need to refetch the addend, reconstruct the top three bits,
6575 and squish the two 11 bit pieces together. */
6576 if (globals->use_rel)
6577 {
6578 bfd_vma S = (upper_insn & 0x0400) >> 10;
a00a1f35 6579 bfd_vma upper = (upper_insn & 0x003f);
c19d1205
ZW
6580 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
6581 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
6582 bfd_vma lower = (lower_insn & 0x07ff);
6583
a00a1f35
MS
6584 upper |= J1 << 6;
6585 upper |= J2 << 7;
6586 upper |= (!S) << 8;
c19d1205
ZW
6587 upper -= 0x0100; /* Sign extend. */
6588
6589 addend = (upper << 12) | (lower << 1);
6590 signed_addend = addend;
6591 }
6592
bd97cb95
DJ
6593 /* Handle calls via the PLT. */
6594 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6595 {
6596 value = (splt->output_section->vma
6597 + splt->output_offset
6598 + h->plt.offset);
6599 /* Target the Thumb stub before the ARM PLT entry. */
6600 value -= PLT_THUMB_STUB_SIZE;
6601 *unresolved_reloc_p = FALSE;
6602 }
6603
c19d1205
ZW
6604 /* ??? Should handle interworking? GCC might someday try to
6605 use this for tail calls. */
6606
6607 relocation = value + signed_addend;
6608 relocation -= (input_section->output_section->vma
6609 + input_section->output_offset
6610 + rel->r_offset);
a00a1f35 6611 signed_check = (bfd_signed_vma) relocation;
c19d1205 6612
c19d1205
ZW
6613 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6614 overflow = TRUE;
6615
6616 /* Put RELOCATION back into the insn. */
6617 {
6618 bfd_vma S = (relocation & 0x00100000) >> 20;
6619 bfd_vma J2 = (relocation & 0x00080000) >> 19;
6620 bfd_vma J1 = (relocation & 0x00040000) >> 18;
6621 bfd_vma hi = (relocation & 0x0003f000) >> 12;
6622 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
6623
a00a1f35 6624 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
c19d1205
ZW
6625 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
6626 }
6627
6628 /* Put the relocated value back in the object file: */
6629 bfd_put_16 (input_bfd, upper_insn, hit_data);
6630 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6631
6632 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6633 }
6634
6635 case R_ARM_THM_JUMP11:
6636 case R_ARM_THM_JUMP8:
6637 case R_ARM_THM_JUMP6:
51c5503b
NC
6638 /* Thumb B (branch) instruction). */
6639 {
6cf9e9fe 6640 bfd_signed_vma relocation;
51c5503b
NC
6641 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
6642 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
51c5503b
NC
6643 bfd_signed_vma signed_check;
6644
c19d1205
ZW
6645 /* CZB cannot jump backward. */
6646 if (r_type == R_ARM_THM_JUMP6)
6647 reloc_signed_min = 0;
6648
4e7fd91e 6649 if (globals->use_rel)
6cf9e9fe 6650 {
4e7fd91e
PB
6651 /* Need to refetch addend. */
6652 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6653 if (addend & ((howto->src_mask + 1) >> 1))
6654 {
6655 signed_addend = -1;
6656 signed_addend &= ~ howto->src_mask;
6657 signed_addend |= addend;
6658 }
6659 else
6660 signed_addend = addend;
6661 /* The value in the insn has been right shifted. We need to
6662 undo this, so that we can perform the address calculation
6663 in terms of bytes. */
6664 signed_addend <<= howto->rightshift;
6cf9e9fe 6665 }
6cf9e9fe 6666 relocation = value + signed_addend;
51c5503b
NC
6667
6668 relocation -= (input_section->output_section->vma
6669 + input_section->output_offset
6670 + rel->r_offset);
6671
6cf9e9fe
NC
6672 relocation >>= howto->rightshift;
6673 signed_check = relocation;
c19d1205
ZW
6674
6675 if (r_type == R_ARM_THM_JUMP6)
6676 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
6677 else
6678 relocation &= howto->dst_mask;
51c5503b 6679 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
cedb70c5 6680
51c5503b
NC
6681 bfd_put_16 (input_bfd, relocation, hit_data);
6682
6683 /* Assumes two's complement. */
6684 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6685 return bfd_reloc_overflow;
6686
6687 return bfd_reloc_ok;
6688 }
cedb70c5 6689
8375c36b
PB
6690 case R_ARM_ALU_PCREL7_0:
6691 case R_ARM_ALU_PCREL15_8:
6692 case R_ARM_ALU_PCREL23_15:
6693 {
6694 bfd_vma insn;
6695 bfd_vma relocation;
6696
6697 insn = bfd_get_32 (input_bfd, hit_data);
4e7fd91e
PB
6698 if (globals->use_rel)
6699 {
6700 /* Extract the addend. */
6701 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
6702 signed_addend = addend;
6703 }
8375c36b
PB
6704 relocation = value + signed_addend;
6705
6706 relocation -= (input_section->output_section->vma
6707 + input_section->output_offset
6708 + rel->r_offset);
6709 insn = (insn & ~0xfff)
6710 | ((howto->bitpos << 7) & 0xf00)
6711 | ((relocation >> howto->bitpos) & 0xff);
6712 bfd_put_32 (input_bfd, value, hit_data);
6713 }
6714 return bfd_reloc_ok;
6715
252b5132
RH
6716 case R_ARM_GNU_VTINHERIT:
6717 case R_ARM_GNU_VTENTRY:
6718 return bfd_reloc_ok;
6719
c19d1205 6720 case R_ARM_GOTOFF32:
252b5132
RH
6721 /* Relocation is relative to the start of the
6722 global offset table. */
6723
6724 BFD_ASSERT (sgot != NULL);
6725 if (sgot == NULL)
6726 return bfd_reloc_notsupported;
9a5aca8c 6727
cedb70c5 6728 /* If we are addressing a Thumb function, we need to adjust the
ee29b9fb
RE
6729 address by one, so that attempts to call the function pointer will
6730 correctly interpret it as Thumb code. */
6731 if (sym_flags == STT_ARM_TFUNC)
6732 value += 1;
6733
252b5132
RH
6734 /* Note that sgot->output_offset is not involved in this
6735 calculation. We always want the start of .got. If we
6736 define _GLOBAL_OFFSET_TABLE in a different way, as is
6737 permitted by the ABI, we might have to change this
9b485d32 6738 calculation. */
252b5132 6739 value -= sgot->output_section->vma;
f21f3fe0 6740 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 6741 contents, rel->r_offset, value,
00a97672 6742 rel->r_addend);
252b5132
RH
6743
6744 case R_ARM_GOTPC:
a7c10850 6745 /* Use global offset table as symbol value. */
252b5132 6746 BFD_ASSERT (sgot != NULL);
f21f3fe0 6747
252b5132
RH
6748 if (sgot == NULL)
6749 return bfd_reloc_notsupported;
6750
0945cdfd 6751 *unresolved_reloc_p = FALSE;
252b5132 6752 value = sgot->output_section->vma;
f21f3fe0 6753 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 6754 contents, rel->r_offset, value,
00a97672 6755 rel->r_addend);
f21f3fe0 6756
252b5132 6757 case R_ARM_GOT32:
eb043451 6758 case R_ARM_GOT_PREL:
252b5132 6759 /* Relocation is to the entry for this symbol in the
9b485d32 6760 global offset table. */
252b5132
RH
6761 if (sgot == NULL)
6762 return bfd_reloc_notsupported;
f21f3fe0 6763
252b5132
RH
6764 if (h != NULL)
6765 {
6766 bfd_vma off;
5e681ec4 6767 bfd_boolean dyn;
f21f3fe0 6768
252b5132
RH
6769 off = h->got.offset;
6770 BFD_ASSERT (off != (bfd_vma) -1);
5e681ec4 6771 dyn = globals->root.dynamic_sections_created;
f21f3fe0 6772
5e681ec4 6773 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
50d6c878 6774 || (info->shared
5e681ec4
PB
6775 && SYMBOL_REFERENCES_LOCAL (info, h))
6776 || (ELF_ST_VISIBILITY (h->other)
6777 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH
6778 {
6779 /* This is actually a static link, or it is a -Bsymbolic link
6780 and the symbol is defined locally. We must initialize this
6781 entry in the global offset table. Since the offset must
6782 always be a multiple of 4, we use the least significant bit
6783 to record whether we have initialized it already.
f21f3fe0 6784
00a97672 6785 When doing a dynamic link, we create a .rel(a).got relocation
f21f3fe0 6786 entry to initialize the value. This is done in the
9b485d32 6787 finish_dynamic_symbol routine. */
252b5132
RH
6788 if ((off & 1) != 0)
6789 off &= ~1;
6790 else
6791 {
ee29b9fb
RE
6792 /* If we are addressing a Thumb function, we need to
6793 adjust the address by one, so that attempts to
6794 call the function pointer will correctly
6795 interpret it as Thumb code. */
6796 if (sym_flags == STT_ARM_TFUNC)
6797 value |= 1;
6798
252b5132
RH
6799 bfd_put_32 (output_bfd, value, sgot->contents + off);
6800 h->got.offset |= 1;
6801 }
6802 }
0945cdfd
DJ
6803 else
6804 *unresolved_reloc_p = FALSE;
f21f3fe0 6805
252b5132
RH
6806 value = sgot->output_offset + off;
6807 }
6808 else
6809 {
6810 bfd_vma off;
f21f3fe0 6811
252b5132
RH
6812 BFD_ASSERT (local_got_offsets != NULL &&
6813 local_got_offsets[r_symndx] != (bfd_vma) -1);
f21f3fe0 6814
252b5132 6815 off = local_got_offsets[r_symndx];
f21f3fe0 6816
252b5132
RH
6817 /* The offset must always be a multiple of 4. We use the
6818 least significant bit to record whether we have already
9b485d32 6819 generated the necessary reloc. */
252b5132
RH
6820 if ((off & 1) != 0)
6821 off &= ~1;
6822 else
6823 {
b7693d02
DJ
6824 /* If we are addressing a Thumb function, we need to
6825 adjust the address by one, so that attempts to
6826 call the function pointer will correctly
6827 interpret it as Thumb code. */
6828 if (sym_flags == STT_ARM_TFUNC)
6829 value |= 1;
6830
00a97672
RS
6831 if (globals->use_rel)
6832 bfd_put_32 (output_bfd, value, sgot->contents + off);
f21f3fe0 6833
252b5132
RH
6834 if (info->shared)
6835 {
6836 asection * srelgot;
947216bf
AM
6837 Elf_Internal_Rela outrel;
6838 bfd_byte *loc;
f21f3fe0 6839
00a97672
RS
6840 srelgot = (bfd_get_section_by_name
6841 (dynobj, RELOC_SECTION (globals, ".got")));
252b5132 6842 BFD_ASSERT (srelgot != NULL);
f21f3fe0 6843
00a97672 6844 outrel.r_addend = addend + value;
252b5132 6845 outrel.r_offset = (sgot->output_section->vma
f21f3fe0 6846 + sgot->output_offset
252b5132
RH
6847 + off);
6848 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
947216bf 6849 loc = srelgot->contents;
00a97672
RS
6850 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
6851 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
252b5132 6852 }
f21f3fe0 6853
252b5132
RH
6854 local_got_offsets[r_symndx] |= 1;
6855 }
f21f3fe0 6856
252b5132
RH
6857 value = sgot->output_offset + off;
6858 }
eb043451
PB
6859 if (r_type != R_ARM_GOT32)
6860 value += sgot->output_section->vma;
9a5aca8c 6861
f21f3fe0 6862 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 6863 contents, rel->r_offset, value,
00a97672 6864 rel->r_addend);
f21f3fe0 6865
ba93b8ac
DJ
6866 case R_ARM_TLS_LDO32:
6867 value = value - dtpoff_base (info);
6868
6869 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS
6870 contents, rel->r_offset, value,
6871 rel->r_addend);
ba93b8ac
DJ
6872
6873 case R_ARM_TLS_LDM32:
6874 {
6875 bfd_vma off;
6876
6877 if (globals->sgot == NULL)
6878 abort ();
6879
6880 off = globals->tls_ldm_got.offset;
6881
6882 if ((off & 1) != 0)
6883 off &= ~1;
6884 else
6885 {
6886 /* If we don't know the module number, create a relocation
6887 for it. */
6888 if (info->shared)
6889 {
6890 Elf_Internal_Rela outrel;
6891 bfd_byte *loc;
6892
6893 if (globals->srelgot == NULL)
6894 abort ();
6895
00a97672 6896 outrel.r_addend = 0;
ba93b8ac
DJ
6897 outrel.r_offset = (globals->sgot->output_section->vma
6898 + globals->sgot->output_offset + off);
6899 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
6900
00a97672
RS
6901 if (globals->use_rel)
6902 bfd_put_32 (output_bfd, outrel.r_addend,
6903 globals->sgot->contents + off);
ba93b8ac
DJ
6904
6905 loc = globals->srelgot->contents;
00a97672
RS
6906 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
6907 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac
DJ
6908 }
6909 else
6910 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
6911
6912 globals->tls_ldm_got.offset |= 1;
6913 }
6914
906e58ca 6915 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
ba93b8ac
DJ
6916 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
6917
6918 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6919 contents, rel->r_offset, value,
00a97672 6920 rel->r_addend);
ba93b8ac
DJ
6921 }
6922
6923 case R_ARM_TLS_GD32:
6924 case R_ARM_TLS_IE32:
6925 {
6926 bfd_vma off;
6927 int indx;
6928 char tls_type;
6929
6930 if (globals->sgot == NULL)
6931 abort ();
6932
6933 indx = 0;
6934 if (h != NULL)
6935 {
6936 bfd_boolean dyn;
6937 dyn = globals->root.dynamic_sections_created;
6938 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6939 && (!info->shared
6940 || !SYMBOL_REFERENCES_LOCAL (info, h)))
6941 {
6942 *unresolved_reloc_p = FALSE;
6943 indx = h->dynindx;
6944 }
6945 off = h->got.offset;
6946 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
6947 }
6948 else
6949 {
6950 if (local_got_offsets == NULL)
6951 abort ();
6952 off = local_got_offsets[r_symndx];
6953 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
6954 }
6955
6956 if (tls_type == GOT_UNKNOWN)
6957 abort ();
6958
6959 if ((off & 1) != 0)
6960 off &= ~1;
6961 else
6962 {
6963 bfd_boolean need_relocs = FALSE;
6964 Elf_Internal_Rela outrel;
6965 bfd_byte *loc = NULL;
6966 int cur_off = off;
6967
6968 /* The GOT entries have not been initialized yet. Do it
6969 now, and emit any relocations. If both an IE GOT and a
6970 GD GOT are necessary, we emit the GD first. */
6971
6972 if ((info->shared || indx != 0)
6973 && (h == NULL
6974 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6975 || h->root.type != bfd_link_hash_undefweak))
6976 {
6977 need_relocs = TRUE;
6978 if (globals->srelgot == NULL)
6979 abort ();
6980 loc = globals->srelgot->contents;
00a97672 6981 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
ba93b8ac
DJ
6982 }
6983
6984 if (tls_type & GOT_TLS_GD)
6985 {
6986 if (need_relocs)
6987 {
00a97672 6988 outrel.r_addend = 0;
ba93b8ac 6989 outrel.r_offset = (globals->sgot->output_section->vma
00a97672
RS
6990 + globals->sgot->output_offset
6991 + cur_off);
ba93b8ac 6992 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
ba93b8ac 6993
00a97672
RS
6994 if (globals->use_rel)
6995 bfd_put_32 (output_bfd, outrel.r_addend,
6996 globals->sgot->contents + cur_off);
6997
6998 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 6999 globals->srelgot->reloc_count++;
00a97672 7000 loc += RELOC_SIZE (globals);
ba93b8ac
DJ
7001
7002 if (indx == 0)
7003 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7004 globals->sgot->contents + cur_off + 4);
7005 else
7006 {
00a97672 7007 outrel.r_addend = 0;
ba93b8ac
DJ
7008 outrel.r_info = ELF32_R_INFO (indx,
7009 R_ARM_TLS_DTPOFF32);
7010 outrel.r_offset += 4;
00a97672
RS
7011
7012 if (globals->use_rel)
7013 bfd_put_32 (output_bfd, outrel.r_addend,
7014 globals->sgot->contents + cur_off + 4);
7015
7016
7017 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 7018 globals->srelgot->reloc_count++;
00a97672 7019 loc += RELOC_SIZE (globals);
ba93b8ac
DJ
7020 }
7021 }
7022 else
7023 {
7024 /* If we are not emitting relocations for a
7025 general dynamic reference, then we must be in a
7026 static link or an executable link with the
7027 symbol binding locally. Mark it as belonging
7028 to module 1, the executable. */
7029 bfd_put_32 (output_bfd, 1,
7030 globals->sgot->contents + cur_off);
7031 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7032 globals->sgot->contents + cur_off + 4);
7033 }
7034
7035 cur_off += 8;
7036 }
7037
7038 if (tls_type & GOT_TLS_IE)
7039 {
7040 if (need_relocs)
7041 {
00a97672
RS
7042 if (indx == 0)
7043 outrel.r_addend = value - dtpoff_base (info);
7044 else
7045 outrel.r_addend = 0;
ba93b8ac
DJ
7046 outrel.r_offset = (globals->sgot->output_section->vma
7047 + globals->sgot->output_offset
7048 + cur_off);
7049 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
7050
00a97672
RS
7051 if (globals->use_rel)
7052 bfd_put_32 (output_bfd, outrel.r_addend,
ba93b8ac
DJ
7053 globals->sgot->contents + cur_off);
7054
00a97672 7055 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 7056 globals->srelgot->reloc_count++;
00a97672 7057 loc += RELOC_SIZE (globals);
ba93b8ac
DJ
7058 }
7059 else
7060 bfd_put_32 (output_bfd, tpoff (info, value),
7061 globals->sgot->contents + cur_off);
7062 cur_off += 4;
7063 }
7064
7065 if (h != NULL)
7066 h->got.offset |= 1;
7067 else
7068 local_got_offsets[r_symndx] |= 1;
7069 }
7070
7071 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
7072 off += 8;
906e58ca 7073 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
ba93b8ac
DJ
7074 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
7075
7076 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7077 contents, rel->r_offset, value,
00a97672 7078 rel->r_addend);
ba93b8ac
DJ
7079 }
7080
7081 case R_ARM_TLS_LE32:
7082 if (info->shared)
7083 {
7084 (*_bfd_error_handler)
7085 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7086 input_bfd, input_section,
7087 (long) rel->r_offset, howto->name);
906e58ca 7088 return FALSE;
ba93b8ac
DJ
7089 }
7090 else
7091 value = tpoff (info, value);
906e58ca 7092
ba93b8ac 7093 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS
7094 contents, rel->r_offset, value,
7095 rel->r_addend);
ba93b8ac 7096
319850b4
JB
7097 case R_ARM_V4BX:
7098 if (globals->fix_v4bx)
845b51d6
PB
7099 {
7100 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
319850b4 7101
845b51d6
PB
7102 /* Ensure that we have a BX instruction. */
7103 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
319850b4 7104
845b51d6
PB
7105 if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
7106 {
7107 /* Branch to veneer. */
7108 bfd_vma glue_addr;
7109 glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
7110 glue_addr -= input_section->output_section->vma
7111 + input_section->output_offset
7112 + rel->r_offset + 8;
7113 insn = (insn & 0xf0000000) | 0x0a000000
7114 | ((glue_addr >> 2) & 0x00ffffff);
7115 }
7116 else
7117 {
7118 /* Preserve Rm (lowest four bits) and the condition code
7119 (highest four bits). Other bits encode MOV PC,Rm. */
7120 insn = (insn & 0xf000000f) | 0x01a0f000;
7121 }
319850b4 7122
845b51d6
PB
7123 bfd_put_32 (input_bfd, insn, hit_data);
7124 }
319850b4
JB
7125 return bfd_reloc_ok;
7126
b6895b4f
PB
7127 case R_ARM_MOVW_ABS_NC:
7128 case R_ARM_MOVT_ABS:
7129 case R_ARM_MOVW_PREL_NC:
7130 case R_ARM_MOVT_PREL:
92f5d02b
MS
7131 /* Until we properly support segment-base-relative addressing then
7132 we assume the segment base to be zero, as for the group relocations.
7133 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7134 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7135 case R_ARM_MOVW_BREL_NC:
7136 case R_ARM_MOVW_BREL:
7137 case R_ARM_MOVT_BREL:
b6895b4f
PB
7138 {
7139 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7140
7141 if (globals->use_rel)
7142 {
7143 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
39623e12 7144 signed_addend = (addend ^ 0x8000) - 0x8000;
b6895b4f 7145 }
92f5d02b 7146
b6895b4f 7147 value += signed_addend;
b6895b4f
PB
7148
7149 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
7150 value -= (input_section->output_section->vma
7151 + input_section->output_offset + rel->r_offset);
7152
92f5d02b
MS
7153 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
7154 return bfd_reloc_overflow;
7155
7156 if (sym_flags == STT_ARM_TFUNC)
7157 value |= 1;
7158
7159 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
7160 || r_type == R_ARM_MOVT_BREL)
b6895b4f
PB
7161 value >>= 16;
7162
7163 insn &= 0xfff0f000;
7164 insn |= value & 0xfff;
7165 insn |= (value & 0xf000) << 4;
7166 bfd_put_32 (input_bfd, insn, hit_data);
7167 }
7168 return bfd_reloc_ok;
7169
7170 case R_ARM_THM_MOVW_ABS_NC:
7171 case R_ARM_THM_MOVT_ABS:
7172 case R_ARM_THM_MOVW_PREL_NC:
7173 case R_ARM_THM_MOVT_PREL:
92f5d02b
MS
7174 /* Until we properly support segment-base-relative addressing then
7175 we assume the segment base to be zero, as for the above relocations.
7176 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7177 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7178 as R_ARM_THM_MOVT_ABS. */
7179 case R_ARM_THM_MOVW_BREL_NC:
7180 case R_ARM_THM_MOVW_BREL:
7181 case R_ARM_THM_MOVT_BREL:
b6895b4f
PB
7182 {
7183 bfd_vma insn;
906e58ca 7184
b6895b4f
PB
7185 insn = bfd_get_16 (input_bfd, hit_data) << 16;
7186 insn |= bfd_get_16 (input_bfd, hit_data + 2);
7187
7188 if (globals->use_rel)
7189 {
7190 addend = ((insn >> 4) & 0xf000)
7191 | ((insn >> 15) & 0x0800)
7192 | ((insn >> 4) & 0x0700)
7193 | (insn & 0x00ff);
39623e12 7194 signed_addend = (addend ^ 0x8000) - 0x8000;
b6895b4f 7195 }
92f5d02b 7196
b6895b4f 7197 value += signed_addend;
b6895b4f
PB
7198
7199 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
7200 value -= (input_section->output_section->vma
7201 + input_section->output_offset + rel->r_offset);
7202
92f5d02b
MS
7203 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
7204 return bfd_reloc_overflow;
7205
7206 if (sym_flags == STT_ARM_TFUNC)
7207 value |= 1;
7208
7209 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
7210 || r_type == R_ARM_THM_MOVT_BREL)
b6895b4f
PB
7211 value >>= 16;
7212
7213 insn &= 0xfbf08f00;
7214 insn |= (value & 0xf000) << 4;
7215 insn |= (value & 0x0800) << 15;
7216 insn |= (value & 0x0700) << 4;
7217 insn |= (value & 0x00ff);
7218
7219 bfd_put_16 (input_bfd, insn >> 16, hit_data);
7220 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
7221 }
7222 return bfd_reloc_ok;
7223
4962c51a
MS
7224 case R_ARM_ALU_PC_G0_NC:
7225 case R_ARM_ALU_PC_G1_NC:
7226 case R_ARM_ALU_PC_G0:
7227 case R_ARM_ALU_PC_G1:
7228 case R_ARM_ALU_PC_G2:
7229 case R_ARM_ALU_SB_G0_NC:
7230 case R_ARM_ALU_SB_G1_NC:
7231 case R_ARM_ALU_SB_G0:
7232 case R_ARM_ALU_SB_G1:
7233 case R_ARM_ALU_SB_G2:
7234 {
7235 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7236 bfd_vma pc = input_section->output_section->vma
7237 + input_section->output_offset + rel->r_offset;
7238 /* sb should be the origin of the *segment* containing the symbol.
7239 It is not clear how to obtain this OS-dependent value, so we
7240 make an arbitrary choice of zero. */
7241 bfd_vma sb = 0;
7242 bfd_vma residual;
7243 bfd_vma g_n;
7244 bfd_signed_vma signed_value;
7245 int group = 0;
7246
7247 /* Determine which group of bits to select. */
7248 switch (r_type)
7249 {
7250 case R_ARM_ALU_PC_G0_NC:
7251 case R_ARM_ALU_PC_G0:
7252 case R_ARM_ALU_SB_G0_NC:
7253 case R_ARM_ALU_SB_G0:
7254 group = 0;
7255 break;
7256
7257 case R_ARM_ALU_PC_G1_NC:
7258 case R_ARM_ALU_PC_G1:
7259 case R_ARM_ALU_SB_G1_NC:
7260 case R_ARM_ALU_SB_G1:
7261 group = 1;
7262 break;
7263
7264 case R_ARM_ALU_PC_G2:
7265 case R_ARM_ALU_SB_G2:
7266 group = 2;
7267 break;
7268
7269 default:
906e58ca 7270 abort ();
4962c51a
MS
7271 }
7272
7273 /* If REL, extract the addend from the insn. If RELA, it will
7274 have already been fetched for us. */
7275 if (globals->use_rel)
7276 {
7277 int negative;
7278 bfd_vma constant = insn & 0xff;
7279 bfd_vma rotation = (insn & 0xf00) >> 8;
7280
7281 if (rotation == 0)
7282 signed_addend = constant;
7283 else
7284 {
7285 /* Compensate for the fact that in the instruction, the
7286 rotation is stored in multiples of 2 bits. */
7287 rotation *= 2;
7288
7289 /* Rotate "constant" right by "rotation" bits. */
7290 signed_addend = (constant >> rotation) |
7291 (constant << (8 * sizeof (bfd_vma) - rotation));
7292 }
7293
7294 /* Determine if the instruction is an ADD or a SUB.
7295 (For REL, this determines the sign of the addend.) */
7296 negative = identify_add_or_sub (insn);
7297 if (negative == 0)
7298 {
7299 (*_bfd_error_handler)
7300 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7301 input_bfd, input_section,
7302 (long) rel->r_offset, howto->name);
906e58ca 7303 return bfd_reloc_overflow;
4962c51a
MS
7304 }
7305
7306 signed_addend *= negative;
7307 }
7308
7309 /* Compute the value (X) to go in the place. */
7310 if (r_type == R_ARM_ALU_PC_G0_NC
7311 || r_type == R_ARM_ALU_PC_G1_NC
7312 || r_type == R_ARM_ALU_PC_G0
7313 || r_type == R_ARM_ALU_PC_G1
7314 || r_type == R_ARM_ALU_PC_G2)
7315 /* PC relative. */
7316 signed_value = value - pc + signed_addend;
7317 else
7318 /* Section base relative. */
7319 signed_value = value - sb + signed_addend;
7320
7321 /* If the target symbol is a Thumb function, then set the
7322 Thumb bit in the address. */
7323 if (sym_flags == STT_ARM_TFUNC)
7324 signed_value |= 1;
7325
7326 /* Calculate the value of the relevant G_n, in encoded
7327 constant-with-rotation format. */
7328 g_n = calculate_group_reloc_mask (abs (signed_value), group,
7329 &residual);
7330
7331 /* Check for overflow if required. */
7332 if ((r_type == R_ARM_ALU_PC_G0
7333 || r_type == R_ARM_ALU_PC_G1
7334 || r_type == R_ARM_ALU_PC_G2
7335 || r_type == R_ARM_ALU_SB_G0
7336 || r_type == R_ARM_ALU_SB_G1
7337 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
7338 {
7339 (*_bfd_error_handler)
7340 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7341 input_bfd, input_section,
7342 (long) rel->r_offset, abs (signed_value), howto->name);
7343 return bfd_reloc_overflow;
7344 }
7345
7346 /* Mask out the value and the ADD/SUB part of the opcode; take care
7347 not to destroy the S bit. */
7348 insn &= 0xff1ff000;
7349
7350 /* Set the opcode according to whether the value to go in the
7351 place is negative. */
7352 if (signed_value < 0)
7353 insn |= 1 << 22;
7354 else
7355 insn |= 1 << 23;
7356
7357 /* Encode the offset. */
7358 insn |= g_n;
7359
7360 bfd_put_32 (input_bfd, insn, hit_data);
7361 }
7362 return bfd_reloc_ok;
7363
7364 case R_ARM_LDR_PC_G0:
7365 case R_ARM_LDR_PC_G1:
7366 case R_ARM_LDR_PC_G2:
7367 case R_ARM_LDR_SB_G0:
7368 case R_ARM_LDR_SB_G1:
7369 case R_ARM_LDR_SB_G2:
7370 {
7371 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7372 bfd_vma pc = input_section->output_section->vma
7373 + input_section->output_offset + rel->r_offset;
7374 bfd_vma sb = 0; /* See note above. */
7375 bfd_vma residual;
7376 bfd_signed_vma signed_value;
7377 int group = 0;
7378
7379 /* Determine which groups of bits to calculate. */
7380 switch (r_type)
7381 {
7382 case R_ARM_LDR_PC_G0:
7383 case R_ARM_LDR_SB_G0:
7384 group = 0;
7385 break;
7386
7387 case R_ARM_LDR_PC_G1:
7388 case R_ARM_LDR_SB_G1:
7389 group = 1;
7390 break;
7391
7392 case R_ARM_LDR_PC_G2:
7393 case R_ARM_LDR_SB_G2:
7394 group = 2;
7395 break;
7396
7397 default:
906e58ca 7398 abort ();
4962c51a
MS
7399 }
7400
7401 /* If REL, extract the addend from the insn. If RELA, it will
7402 have already been fetched for us. */
7403 if (globals->use_rel)
7404 {
7405 int negative = (insn & (1 << 23)) ? 1 : -1;
7406 signed_addend = negative * (insn & 0xfff);
7407 }
7408
7409 /* Compute the value (X) to go in the place. */
7410 if (r_type == R_ARM_LDR_PC_G0
7411 || r_type == R_ARM_LDR_PC_G1
7412 || r_type == R_ARM_LDR_PC_G2)
7413 /* PC relative. */
7414 signed_value = value - pc + signed_addend;
7415 else
7416 /* Section base relative. */
7417 signed_value = value - sb + signed_addend;
7418
7419 /* Calculate the value of the relevant G_{n-1} to obtain
7420 the residual at that stage. */
7421 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7422
7423 /* Check for overflow. */
7424 if (residual >= 0x1000)
7425 {
7426 (*_bfd_error_handler)
7427 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7428 input_bfd, input_section,
7429 (long) rel->r_offset, abs (signed_value), howto->name);
7430 return bfd_reloc_overflow;
7431 }
7432
7433 /* Mask out the value and U bit. */
7434 insn &= 0xff7ff000;
7435
7436 /* Set the U bit if the value to go in the place is non-negative. */
7437 if (signed_value >= 0)
7438 insn |= 1 << 23;
7439
7440 /* Encode the offset. */
7441 insn |= residual;
7442
7443 bfd_put_32 (input_bfd, insn, hit_data);
7444 }
7445 return bfd_reloc_ok;
7446
7447 case R_ARM_LDRS_PC_G0:
7448 case R_ARM_LDRS_PC_G1:
7449 case R_ARM_LDRS_PC_G2:
7450 case R_ARM_LDRS_SB_G0:
7451 case R_ARM_LDRS_SB_G1:
7452 case R_ARM_LDRS_SB_G2:
7453 {
7454 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7455 bfd_vma pc = input_section->output_section->vma
7456 + input_section->output_offset + rel->r_offset;
7457 bfd_vma sb = 0; /* See note above. */
7458 bfd_vma residual;
7459 bfd_signed_vma signed_value;
7460 int group = 0;
7461
7462 /* Determine which groups of bits to calculate. */
7463 switch (r_type)
7464 {
7465 case R_ARM_LDRS_PC_G0:
7466 case R_ARM_LDRS_SB_G0:
7467 group = 0;
7468 break;
7469
7470 case R_ARM_LDRS_PC_G1:
7471 case R_ARM_LDRS_SB_G1:
7472 group = 1;
7473 break;
7474
7475 case R_ARM_LDRS_PC_G2:
7476 case R_ARM_LDRS_SB_G2:
7477 group = 2;
7478 break;
7479
7480 default:
906e58ca 7481 abort ();
4962c51a
MS
7482 }
7483
7484 /* If REL, extract the addend from the insn. If RELA, it will
7485 have already been fetched for us. */
7486 if (globals->use_rel)
7487 {
7488 int negative = (insn & (1 << 23)) ? 1 : -1;
7489 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
7490 }
7491
7492 /* Compute the value (X) to go in the place. */
7493 if (r_type == R_ARM_LDRS_PC_G0
7494 || r_type == R_ARM_LDRS_PC_G1
7495 || r_type == R_ARM_LDRS_PC_G2)
7496 /* PC relative. */
7497 signed_value = value - pc + signed_addend;
7498 else
7499 /* Section base relative. */
7500 signed_value = value - sb + signed_addend;
7501
7502 /* Calculate the value of the relevant G_{n-1} to obtain
7503 the residual at that stage. */
7504 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7505
7506 /* Check for overflow. */
7507 if (residual >= 0x100)
7508 {
7509 (*_bfd_error_handler)
7510 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7511 input_bfd, input_section,
7512 (long) rel->r_offset, abs (signed_value), howto->name);
7513 return bfd_reloc_overflow;
7514 }
7515
7516 /* Mask out the value and U bit. */
7517 insn &= 0xff7ff0f0;
7518
7519 /* Set the U bit if the value to go in the place is non-negative. */
7520 if (signed_value >= 0)
7521 insn |= 1 << 23;
7522
7523 /* Encode the offset. */
7524 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
7525
7526 bfd_put_32 (input_bfd, insn, hit_data);
7527 }
7528 return bfd_reloc_ok;
7529
7530 case R_ARM_LDC_PC_G0:
7531 case R_ARM_LDC_PC_G1:
7532 case R_ARM_LDC_PC_G2:
7533 case R_ARM_LDC_SB_G0:
7534 case R_ARM_LDC_SB_G1:
7535 case R_ARM_LDC_SB_G2:
7536 {
7537 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7538 bfd_vma pc = input_section->output_section->vma
7539 + input_section->output_offset + rel->r_offset;
7540 bfd_vma sb = 0; /* See note above. */
7541 bfd_vma residual;
7542 bfd_signed_vma signed_value;
7543 int group = 0;
7544
7545 /* Determine which groups of bits to calculate. */
7546 switch (r_type)
7547 {
7548 case R_ARM_LDC_PC_G0:
7549 case R_ARM_LDC_SB_G0:
7550 group = 0;
7551 break;
7552
7553 case R_ARM_LDC_PC_G1:
7554 case R_ARM_LDC_SB_G1:
7555 group = 1;
7556 break;
7557
7558 case R_ARM_LDC_PC_G2:
7559 case R_ARM_LDC_SB_G2:
7560 group = 2;
7561 break;
7562
7563 default:
906e58ca 7564 abort ();
4962c51a
MS
7565 }
7566
7567 /* If REL, extract the addend from the insn. If RELA, it will
7568 have already been fetched for us. */
7569 if (globals->use_rel)
7570 {
7571 int negative = (insn & (1 << 23)) ? 1 : -1;
7572 signed_addend = negative * ((insn & 0xff) << 2);
7573 }
7574
7575 /* Compute the value (X) to go in the place. */
7576 if (r_type == R_ARM_LDC_PC_G0
7577 || r_type == R_ARM_LDC_PC_G1
7578 || r_type == R_ARM_LDC_PC_G2)
7579 /* PC relative. */
7580 signed_value = value - pc + signed_addend;
7581 else
7582 /* Section base relative. */
7583 signed_value = value - sb + signed_addend;
7584
7585 /* Calculate the value of the relevant G_{n-1} to obtain
7586 the residual at that stage. */
7587 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7588
7589 /* Check for overflow. (The absolute value to go in the place must be
7590 divisible by four and, after having been divided by four, must
7591 fit in eight bits.) */
7592 if ((residual & 0x3) != 0 || residual >= 0x400)
7593 {
7594 (*_bfd_error_handler)
7595 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7596 input_bfd, input_section,
7597 (long) rel->r_offset, abs (signed_value), howto->name);
7598 return bfd_reloc_overflow;
7599 }
7600
7601 /* Mask out the value and U bit. */
7602 insn &= 0xff7fff00;
7603
7604 /* Set the U bit if the value to go in the place is non-negative. */
7605 if (signed_value >= 0)
7606 insn |= 1 << 23;
7607
7608 /* Encode the offset. */
7609 insn |= residual >> 2;
7610
7611 bfd_put_32 (input_bfd, insn, hit_data);
7612 }
7613 return bfd_reloc_ok;
7614
252b5132
RH
7615 default:
7616 return bfd_reloc_notsupported;
7617 }
7618}
7619
98c1d4aa
NC
7620/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7621static void
57e8b36a
NC
7622arm_add_to_rel (bfd * abfd,
7623 bfd_byte * address,
7624 reloc_howto_type * howto,
7625 bfd_signed_vma increment)
98c1d4aa 7626{
98c1d4aa
NC
7627 bfd_signed_vma addend;
7628
bd97cb95
DJ
7629 if (howto->type == R_ARM_THM_CALL
7630 || howto->type == R_ARM_THM_JUMP24)
98c1d4aa 7631 {
9a5aca8c
AM
7632 int upper_insn, lower_insn;
7633 int upper, lower;
98c1d4aa 7634
9a5aca8c
AM
7635 upper_insn = bfd_get_16 (abfd, address);
7636 lower_insn = bfd_get_16 (abfd, address + 2);
7637 upper = upper_insn & 0x7ff;
7638 lower = lower_insn & 0x7ff;
7639
7640 addend = (upper << 12) | (lower << 1);
ddda4409 7641 addend += increment;
9a5aca8c 7642 addend >>= 1;
98c1d4aa 7643
9a5aca8c
AM
7644 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
7645 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
7646
dc810e39
AM
7647 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
7648 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
9a5aca8c
AM
7649 }
7650 else
7651 {
7652 bfd_vma contents;
7653
7654 contents = bfd_get_32 (abfd, address);
7655
7656 /* Get the (signed) value from the instruction. */
7657 addend = contents & howto->src_mask;
7658 if (addend & ((howto->src_mask + 1) >> 1))
7659 {
7660 bfd_signed_vma mask;
7661
7662 mask = -1;
7663 mask &= ~ howto->src_mask;
7664 addend |= mask;
7665 }
7666
7667 /* Add in the increment, (which is a byte value). */
7668 switch (howto->type)
7669 {
7670 default:
7671 addend += increment;
7672 break;
7673
7674 case R_ARM_PC24:
c6596c5e 7675 case R_ARM_PLT32:
5b5bb741
PB
7676 case R_ARM_CALL:
7677 case R_ARM_JUMP24:
9a5aca8c 7678 addend <<= howto->size;
dc810e39 7679 addend += increment;
9a5aca8c
AM
7680
7681 /* Should we check for overflow here ? */
7682
7683 /* Drop any undesired bits. */
7684 addend >>= howto->rightshift;
7685 break;
7686 }
7687
7688 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
7689
7690 bfd_put_32 (abfd, contents, address);
ddda4409 7691 }
98c1d4aa 7692}
252b5132 7693
ba93b8ac
DJ
7694#define IS_ARM_TLS_RELOC(R_TYPE) \
7695 ((R_TYPE) == R_ARM_TLS_GD32 \
7696 || (R_TYPE) == R_ARM_TLS_LDO32 \
7697 || (R_TYPE) == R_ARM_TLS_LDM32 \
7698 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7699 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7700 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7701 || (R_TYPE) == R_ARM_TLS_LE32 \
7702 || (R_TYPE) == R_ARM_TLS_IE32)
7703
252b5132 7704/* Relocate an ARM ELF section. */
906e58ca 7705
b34976b6 7706static bfd_boolean
57e8b36a
NC
7707elf32_arm_relocate_section (bfd * output_bfd,
7708 struct bfd_link_info * info,
7709 bfd * input_bfd,
7710 asection * input_section,
7711 bfd_byte * contents,
7712 Elf_Internal_Rela * relocs,
7713 Elf_Internal_Sym * local_syms,
7714 asection ** local_sections)
252b5132 7715{
b34976b6
AM
7716 Elf_Internal_Shdr *symtab_hdr;
7717 struct elf_link_hash_entry **sym_hashes;
7718 Elf_Internal_Rela *rel;
7719 Elf_Internal_Rela *relend;
7720 const char *name;
b32d3aa2 7721 struct elf32_arm_link_hash_table * globals;
252b5132 7722
4e7fd91e 7723 globals = elf32_arm_hash_table (info);
b491616a 7724
0ffa91dd 7725 symtab_hdr = & elf_symtab_hdr (input_bfd);
252b5132
RH
7726 sym_hashes = elf_sym_hashes (input_bfd);
7727
7728 rel = relocs;
7729 relend = relocs + input_section->reloc_count;
7730 for (; rel < relend; rel++)
7731 {
ba96a88f
NC
7732 int r_type;
7733 reloc_howto_type * howto;
7734 unsigned long r_symndx;
7735 Elf_Internal_Sym * sym;
7736 asection * sec;
252b5132 7737 struct elf_link_hash_entry * h;
ba96a88f
NC
7738 bfd_vma relocation;
7739 bfd_reloc_status_type r;
7740 arelent bfd_reloc;
ba93b8ac 7741 char sym_type;
0945cdfd 7742 bfd_boolean unresolved_reloc = FALSE;
f2a9dd69 7743 char *error_message = NULL;
f21f3fe0 7744
252b5132 7745 r_symndx = ELF32_R_SYM (rel->r_info);
ba96a88f 7746 r_type = ELF32_R_TYPE (rel->r_info);
b32d3aa2 7747 r_type = arm_real_reloc_type (globals, r_type);
252b5132 7748
ba96a88f
NC
7749 if ( r_type == R_ARM_GNU_VTENTRY
7750 || r_type == R_ARM_GNU_VTINHERIT)
252b5132
RH
7751 continue;
7752
b32d3aa2 7753 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
ba96a88f 7754 howto = bfd_reloc.howto;
252b5132 7755
252b5132
RH
7756 h = NULL;
7757 sym = NULL;
7758 sec = NULL;
9b485d32 7759
252b5132
RH
7760 if (r_symndx < symtab_hdr->sh_info)
7761 {
7762 sym = local_syms + r_symndx;
ba93b8ac 7763 sym_type = ELF32_ST_TYPE (sym->st_info);
252b5132 7764 sec = local_sections[r_symndx];
4e7fd91e 7765 if (globals->use_rel)
f8df10f4 7766 {
4e7fd91e
PB
7767 relocation = (sec->output_section->vma
7768 + sec->output_offset
7769 + sym->st_value);
ab96bf03
AM
7770 if (!info->relocatable
7771 && (sec->flags & SEC_MERGE)
7772 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
f8df10f4 7773 {
4e7fd91e
PB
7774 asection *msec;
7775 bfd_vma addend, value;
7776
39623e12 7777 switch (r_type)
4e7fd91e 7778 {
39623e12
PB
7779 case R_ARM_MOVW_ABS_NC:
7780 case R_ARM_MOVT_ABS:
7781 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7782 addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
7783 addend = (addend ^ 0x8000) - 0x8000;
7784 break;
f8df10f4 7785
39623e12
PB
7786 case R_ARM_THM_MOVW_ABS_NC:
7787 case R_ARM_THM_MOVT_ABS:
7788 value = bfd_get_16 (input_bfd, contents + rel->r_offset)
7789 << 16;
7790 value |= bfd_get_16 (input_bfd,
7791 contents + rel->r_offset + 2);
7792 addend = ((value & 0xf7000) >> 4) | (value & 0xff)
7793 | ((value & 0x04000000) >> 15);
7794 addend = (addend ^ 0x8000) - 0x8000;
7795 break;
f8df10f4 7796
39623e12
PB
7797 default:
7798 if (howto->rightshift
7799 || (howto->src_mask & (howto->src_mask + 1)))
7800 {
7801 (*_bfd_error_handler)
7802 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7803 input_bfd, input_section,
7804 (long) rel->r_offset, howto->name);
7805 return FALSE;
7806 }
7807
7808 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7809
7810 /* Get the (signed) value from the instruction. */
7811 addend = value & howto->src_mask;
7812 if (addend & ((howto->src_mask + 1) >> 1))
7813 {
7814 bfd_signed_vma mask;
7815
7816 mask = -1;
7817 mask &= ~ howto->src_mask;
7818 addend |= mask;
7819 }
7820 break;
4e7fd91e 7821 }
39623e12 7822
4e7fd91e
PB
7823 msec = sec;
7824 addend =
7825 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
7826 - relocation;
7827 addend += msec->output_section->vma + msec->output_offset;
39623e12
PB
7828
7829 /* Cases here must match those in the preceeding
7830 switch statement. */
7831 switch (r_type)
7832 {
7833 case R_ARM_MOVW_ABS_NC:
7834 case R_ARM_MOVT_ABS:
7835 value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
7836 | (addend & 0xfff);
7837 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7838 break;
7839
7840 case R_ARM_THM_MOVW_ABS_NC:
7841 case R_ARM_THM_MOVT_ABS:
7842 value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
7843 | (addend & 0xff) | ((addend & 0x0800) << 15);
7844 bfd_put_16 (input_bfd, value >> 16,
7845 contents + rel->r_offset);
7846 bfd_put_16 (input_bfd, value,
7847 contents + rel->r_offset + 2);
7848 break;
7849
7850 default:
7851 value = (value & ~ howto->dst_mask)
7852 | (addend & howto->dst_mask);
7853 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7854 break;
7855 }
f8df10f4 7856 }
f8df10f4 7857 }
4e7fd91e
PB
7858 else
7859 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7860 }
7861 else
7862 {
560e09e9 7863 bfd_boolean warned;
560e09e9 7864
b2a8e766
AM
7865 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7866 r_symndx, symtab_hdr, sym_hashes,
7867 h, sec, relocation,
7868 unresolved_reloc, warned);
ba93b8ac
DJ
7869
7870 sym_type = h->type;
252b5132
RH
7871 }
7872
ab96bf03
AM
7873 if (sec != NULL && elf_discarded_section (sec))
7874 {
7875 /* For relocs against symbols from removed linkonce sections,
7876 or sections discarded by a linker script, we just want the
7877 section contents zeroed. Avoid any special processing. */
7878 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
7879 rel->r_info = 0;
7880 rel->r_addend = 0;
7881 continue;
7882 }
7883
7884 if (info->relocatable)
7885 {
7886 /* This is a relocatable link. We don't have to change
7887 anything, unless the reloc is against a section symbol,
7888 in which case we have to adjust according to where the
7889 section symbol winds up in the output section. */
7890 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7891 {
7892 if (globals->use_rel)
7893 arm_add_to_rel (input_bfd, contents + rel->r_offset,
7894 howto, (bfd_signed_vma) sec->output_offset);
7895 else
7896 rel->r_addend += sec->output_offset;
7897 }
7898 continue;
7899 }
7900
252b5132
RH
7901 if (h != NULL)
7902 name = h->root.root.string;
7903 else
7904 {
7905 name = (bfd_elf_string_from_elf_section
7906 (input_bfd, symtab_hdr->sh_link, sym->st_name));
7907 if (name == NULL || *name == '\0')
7908 name = bfd_section_name (input_bfd, sec);
7909 }
f21f3fe0 7910
ba93b8ac
DJ
7911 if (r_symndx != 0
7912 && r_type != R_ARM_NONE
7913 && (h == NULL
7914 || h->root.type == bfd_link_hash_defined
7915 || h->root.type == bfd_link_hash_defweak)
7916 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7917 {
7918 (*_bfd_error_handler)
7919 ((sym_type == STT_TLS
7920 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7921 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
7922 input_bfd,
7923 input_section,
7924 (long) rel->r_offset,
7925 howto->name,
7926 name);
7927 }
7928
252b5132
RH
7929 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
7930 input_section, contents, rel,
7931 relocation, info, sec, name,
7932 (h ? ELF_ST_TYPE (h->type) :
0945cdfd 7933 ELF_ST_TYPE (sym->st_info)), h,
f2a9dd69 7934 &unresolved_reloc, &error_message);
0945cdfd
DJ
7935
7936 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7937 because such sections are not SEC_ALLOC and thus ld.so will
7938 not process them. */
7939 if (unresolved_reloc
7940 && !((input_section->flags & SEC_DEBUGGING) != 0
7941 && h->def_dynamic))
7942 {
7943 (*_bfd_error_handler)
843fe662
L
7944 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7945 input_bfd,
7946 input_section,
7947 (long) rel->r_offset,
7948 howto->name,
7949 h->root.root.string);
0945cdfd
DJ
7950 return FALSE;
7951 }
252b5132
RH
7952
7953 if (r != bfd_reloc_ok)
7954 {
252b5132
RH
7955 switch (r)
7956 {
7957 case bfd_reloc_overflow:
cf919dfd
PB
7958 /* If the overflowing reloc was to an undefined symbol,
7959 we have already printed one error message and there
7960 is no point complaining again. */
7961 if ((! h ||
7962 h->root.type != bfd_link_hash_undefined)
7963 && (!((*info->callbacks->reloc_overflow)
dfeffb9f
L
7964 (info, (h ? &h->root : NULL), name, howto->name,
7965 (bfd_vma) 0, input_bfd, input_section,
7966 rel->r_offset))))
b34976b6 7967 return FALSE;
252b5132
RH
7968 break;
7969
7970 case bfd_reloc_undefined:
7971 if (!((*info->callbacks->undefined_symbol)
7972 (info, name, input_bfd, input_section,
b34976b6
AM
7973 rel->r_offset, TRUE)))
7974 return FALSE;
252b5132
RH
7975 break;
7976
7977 case bfd_reloc_outofrange:
f2a9dd69 7978 error_message = _("out of range");
252b5132
RH
7979 goto common_error;
7980
7981 case bfd_reloc_notsupported:
f2a9dd69 7982 error_message = _("unsupported relocation");
252b5132
RH
7983 goto common_error;
7984
7985 case bfd_reloc_dangerous:
f2a9dd69 7986 /* error_message should already be set. */
252b5132
RH
7987 goto common_error;
7988
7989 default:
f2a9dd69 7990 error_message = _("unknown error");
8029a119 7991 /* Fall through. */
252b5132
RH
7992
7993 common_error:
f2a9dd69
DJ
7994 BFD_ASSERT (error_message != NULL);
7995 if (!((*info->callbacks->reloc_dangerous)
7996 (info, error_message, input_bfd, input_section,
252b5132 7997 rel->r_offset)))
b34976b6 7998 return FALSE;
252b5132
RH
7999 break;
8000 }
8001 }
8002 }
8003
b34976b6 8004 return TRUE;
252b5132
RH
8005}
8006
c178919b
NC
8007/* Set the right machine number. */
8008
8009static bfd_boolean
57e8b36a 8010elf32_arm_object_p (bfd *abfd)
c178919b 8011{
5a6c6817 8012 unsigned int mach;
57e8b36a 8013
5a6c6817 8014 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
c178919b 8015
5a6c6817
NC
8016 if (mach != bfd_mach_arm_unknown)
8017 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8018
8019 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
8020 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
e16bb312 8021
e16bb312 8022 else
5a6c6817 8023 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
c178919b
NC
8024
8025 return TRUE;
8026}
8027
fc830a83 8028/* Function to keep ARM specific flags in the ELF header. */
3c9458e9 8029
b34976b6 8030static bfd_boolean
57e8b36a 8031elf32_arm_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH
8032{
8033 if (elf_flags_init (abfd)
8034 && elf_elfheader (abfd)->e_flags != flags)
8035 {
fc830a83
NC
8036 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
8037 {
fd2ec330 8038 if (flags & EF_ARM_INTERWORK)
d003868e
AM
8039 (*_bfd_error_handler)
8040 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8041 abfd);
fc830a83 8042 else
d003868e
AM
8043 _bfd_error_handler
8044 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8045 abfd);
fc830a83 8046 }
252b5132
RH
8047 }
8048 else
8049 {
8050 elf_elfheader (abfd)->e_flags = flags;
b34976b6 8051 elf_flags_init (abfd) = TRUE;
252b5132
RH
8052 }
8053
b34976b6 8054 return TRUE;
252b5132
RH
8055}
8056
fc830a83 8057/* Copy backend specific data from one object module to another. */
9b485d32 8058
b34976b6 8059static bfd_boolean
57e8b36a 8060elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH
8061{
8062 flagword in_flags;
8063 flagword out_flags;
8064
0ffa91dd 8065 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
b34976b6 8066 return TRUE;
252b5132 8067
fc830a83 8068 in_flags = elf_elfheader (ibfd)->e_flags;
252b5132
RH
8069 out_flags = elf_elfheader (obfd)->e_flags;
8070
fc830a83
NC
8071 if (elf_flags_init (obfd)
8072 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
8073 && in_flags != out_flags)
252b5132 8074 {
252b5132 8075 /* Cannot mix APCS26 and APCS32 code. */
fd2ec330 8076 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
b34976b6 8077 return FALSE;
252b5132
RH
8078
8079 /* Cannot mix float APCS and non-float APCS code. */
fd2ec330 8080 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
b34976b6 8081 return FALSE;
252b5132
RH
8082
8083 /* If the src and dest have different interworking flags
8084 then turn off the interworking bit. */
fd2ec330 8085 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
252b5132 8086 {
fd2ec330 8087 if (out_flags & EF_ARM_INTERWORK)
d003868e
AM
8088 _bfd_error_handler
8089 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8090 obfd, ibfd);
252b5132 8091
fd2ec330 8092 in_flags &= ~EF_ARM_INTERWORK;
252b5132 8093 }
1006ba19
PB
8094
8095 /* Likewise for PIC, though don't warn for this case. */
fd2ec330
PB
8096 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
8097 in_flags &= ~EF_ARM_PIC;
252b5132
RH
8098 }
8099
8100 elf_elfheader (obfd)->e_flags = in_flags;
b34976b6 8101 elf_flags_init (obfd) = TRUE;
252b5132 8102
94a3258f
PB
8103 /* Also copy the EI_OSABI field. */
8104 elf_elfheader (obfd)->e_ident[EI_OSABI] =
8105 elf_elfheader (ibfd)->e_ident[EI_OSABI];
8106
104d59d1
JM
8107 /* Copy object attributes. */
8108 _bfd_elf_copy_obj_attributes (ibfd, obfd);
ee065d83
PB
8109
8110 return TRUE;
8111}
8112
8113/* Values for Tag_ABI_PCS_R9_use. */
8114enum
8115{
8116 AEABI_R9_V6,
8117 AEABI_R9_SB,
8118 AEABI_R9_TLS,
8119 AEABI_R9_unused
8120};
8121
8122/* Values for Tag_ABI_PCS_RW_data. */
8123enum
8124{
8125 AEABI_PCS_RW_data_absolute,
8126 AEABI_PCS_RW_data_PCrel,
8127 AEABI_PCS_RW_data_SBrel,
8128 AEABI_PCS_RW_data_unused
8129};
8130
8131/* Values for Tag_ABI_enum_size. */
8132enum
8133{
8134 AEABI_enum_unused,
8135 AEABI_enum_short,
8136 AEABI_enum_wide,
8137 AEABI_enum_forced_wide
8138};
8139
104d59d1
JM
8140/* Determine whether an object attribute tag takes an integer, a
8141 string or both. */
906e58ca 8142
104d59d1
JM
8143static int
8144elf32_arm_obj_attrs_arg_type (int tag)
8145{
8146 if (tag == Tag_compatibility)
3483fe2e 8147 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
2d0bb761 8148 else if (tag == Tag_nodefaults)
3483fe2e
AS
8149 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT;
8150 else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name)
8151 return ATTR_TYPE_FLAG_STR_VAL;
104d59d1 8152 else if (tag < 32)
3483fe2e 8153 return ATTR_TYPE_FLAG_INT_VAL;
104d59d1 8154 else
3483fe2e 8155 return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
104d59d1
JM
8156}
8157
5aa6ff7c
AS
8158/* The ABI defines that Tag_conformance should be emitted first, and that
8159 Tag_nodefaults should be second (if either is defined). This sets those
8160 two positions, and bumps up the position of all the remaining tags to
8161 compensate. */
8162static int
8163elf32_arm_obj_attrs_order (int num)
8164{
8165 if (num == 4)
8166 return Tag_conformance;
8167 if (num == 5)
8168 return Tag_nodefaults;
8169 if ((num - 2) < Tag_nodefaults)
8170 return num - 2;
8171 if ((num - 1) < Tag_conformance)
8172 return num - 1;
8173 return num;
8174}
8175
91e22acd
AS
8176/* Read the architecture from the Tag_also_compatible_with attribute, if any.
8177 Returns -1 if no architecture could be read. */
8178
8179static int
8180get_secondary_compatible_arch (bfd *abfd)
8181{
8182 obj_attribute *attr =
8183 &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
8184
8185 /* Note: the tag and its argument below are uleb128 values, though
8186 currently-defined values fit in one byte for each. */
8187 if (attr->s
8188 && attr->s[0] == Tag_CPU_arch
8189 && (attr->s[1] & 128) != 128
8190 && attr->s[2] == 0)
8191 return attr->s[1];
8192
8193 /* This tag is "safely ignorable", so don't complain if it looks funny. */
8194 return -1;
8195}
8196
8197/* Set, or unset, the architecture of the Tag_also_compatible_with attribute.
8198 The tag is removed if ARCH is -1. */
8199
8e79c3df 8200static void
91e22acd 8201set_secondary_compatible_arch (bfd *abfd, int arch)
8e79c3df 8202{
91e22acd
AS
8203 obj_attribute *attr =
8204 &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
8e79c3df 8205
91e22acd
AS
8206 if (arch == -1)
8207 {
8208 attr->s = NULL;
8209 return;
8e79c3df 8210 }
91e22acd
AS
8211
8212 /* Note: the tag and its argument below are uleb128 values, though
8213 currently-defined values fit in one byte for each. */
8214 if (!attr->s)
8215 attr->s = bfd_alloc (abfd, 3);
8216 attr->s[0] = Tag_CPU_arch;
8217 attr->s[1] = arch;
8218 attr->s[2] = '\0';
8e79c3df
CM
8219}
8220
91e22acd
AS
8221/* Combine two values for Tag_CPU_arch, taking secondary compatibility tags
8222 into account. */
8223
8224static int
8225tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out,
8226 int newtag, int secondary_compat)
8e79c3df 8227{
91e22acd
AS
8228#define T(X) TAG_CPU_ARCH_##X
8229 int tagl, tagh, result;
8230 const int v6t2[] =
8231 {
8232 T(V6T2), /* PRE_V4. */
8233 T(V6T2), /* V4. */
8234 T(V6T2), /* V4T. */
8235 T(V6T2), /* V5T. */
8236 T(V6T2), /* V5TE. */
8237 T(V6T2), /* V5TEJ. */
8238 T(V6T2), /* V6. */
8239 T(V7), /* V6KZ. */
8240 T(V6T2) /* V6T2. */
8241 };
8242 const int v6k[] =
8243 {
8244 T(V6K), /* PRE_V4. */
8245 T(V6K), /* V4. */
8246 T(V6K), /* V4T. */
8247 T(V6K), /* V5T. */
8248 T(V6K), /* V5TE. */
8249 T(V6K), /* V5TEJ. */
8250 T(V6K), /* V6. */
8251 T(V6KZ), /* V6KZ. */
8252 T(V7), /* V6T2. */
8253 T(V6K) /* V6K. */
8254 };
8255 const int v7[] =
8256 {
8257 T(V7), /* PRE_V4. */
8258 T(V7), /* V4. */
8259 T(V7), /* V4T. */
8260 T(V7), /* V5T. */
8261 T(V7), /* V5TE. */
8262 T(V7), /* V5TEJ. */
8263 T(V7), /* V6. */
8264 T(V7), /* V6KZ. */
8265 T(V7), /* V6T2. */
8266 T(V7), /* V6K. */
8267 T(V7) /* V7. */
8268 };
8269 const int v6_m[] =
8270 {
8271 -1, /* PRE_V4. */
8272 -1, /* V4. */
8273 T(V6K), /* V4T. */
8274 T(V6K), /* V5T. */
8275 T(V6K), /* V5TE. */
8276 T(V6K), /* V5TEJ. */
8277 T(V6K), /* V6. */
8278 T(V6KZ), /* V6KZ. */
8279 T(V7), /* V6T2. */
8280 T(V6K), /* V6K. */
8281 T(V7), /* V7. */
8282 T(V6_M) /* V6_M. */
8283 };
8284 const int v6s_m[] =
8285 {
8286 -1, /* PRE_V4. */
8287 -1, /* V4. */
8288 T(V6K), /* V4T. */
8289 T(V6K), /* V5T. */
8290 T(V6K), /* V5TE. */
8291 T(V6K), /* V5TEJ. */
8292 T(V6K), /* V6. */
8293 T(V6KZ), /* V6KZ. */
8294 T(V7), /* V6T2. */
8295 T(V6K), /* V6K. */
8296 T(V7), /* V7. */
8297 T(V6S_M), /* V6_M. */
8298 T(V6S_M) /* V6S_M. */
8299 };
8300 const int v4t_plus_v6_m[] =
8301 {
8302 -1, /* PRE_V4. */
8303 -1, /* V4. */
8304 T(V4T), /* V4T. */
8305 T(V5T), /* V5T. */
8306 T(V5TE), /* V5TE. */
8307 T(V5TEJ), /* V5TEJ. */
8308 T(V6), /* V6. */
8309 T(V6KZ), /* V6KZ. */
8310 T(V6T2), /* V6T2. */
8311 T(V6K), /* V6K. */
8312 T(V7), /* V7. */
8313 T(V6_M), /* V6_M. */
8314 T(V6S_M), /* V6S_M. */
8315 T(V4T_PLUS_V6_M) /* V4T plus V6_M. */
8316 };
8317 const int *comb[] =
8318 {
8319 v6t2,
8320 v6k,
8321 v7,
8322 v6_m,
8323 v6s_m,
8324 /* Pseudo-architecture. */
8325 v4t_plus_v6_m
8326 };
8327
8328 /* Check we've not got a higher architecture than we know about. */
8329
8330 if (oldtag >= MAX_TAG_CPU_ARCH || newtag >= MAX_TAG_CPU_ARCH)
8331 {
8332 _bfd_error_handler (_("ERROR: %B: Unknown CPU architecture"), ibfd);
8333 return -1;
8334 }
8335
8336 /* Override old tag if we have a Tag_also_compatible_with on the output. */
8337
8338 if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T))
8339 || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M)))
8340 oldtag = T(V4T_PLUS_V6_M);
8341
8342 /* And override the new tag if we have a Tag_also_compatible_with on the
8343 input. */
8344
8345 if ((newtag == T(V6_M) && secondary_compat == T(V4T))
8346 || (newtag == T(V4T) && secondary_compat == T(V6_M)))
8347 newtag = T(V4T_PLUS_V6_M);
8348
8349 tagl = (oldtag < newtag) ? oldtag : newtag;
8350 result = tagh = (oldtag > newtag) ? oldtag : newtag;
8351
8352 /* Architectures before V6KZ add features monotonically. */
8353 if (tagh <= TAG_CPU_ARCH_V6KZ)
8354 return result;
8355
8356 result = comb[tagh - T(V6T2)][tagl];
8357
8358 /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M)
8359 as the canonical version. */
8360 if (result == T(V4T_PLUS_V6_M))
8361 {
8362 result = T(V4T);
8363 *secondary_compat_out = T(V6_M);
8364 }
8365 else
8366 *secondary_compat_out = -1;
8367
8368 if (result == -1)
8369 {
8370 _bfd_error_handler (_("ERROR: %B: Conflicting CPU architectures %d/%d"),
8371 ibfd, oldtag, newtag);
8372 return -1;
8373 }
8374
8375 return result;
8376#undef T
8e79c3df
CM
8377}
8378
ee065d83
PB
8379/* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8380 are conflicting attributes. */
906e58ca 8381
ee065d83
PB
8382static bfd_boolean
8383elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
8384{
104d59d1
JM
8385 obj_attribute *in_attr;
8386 obj_attribute *out_attr;
8387 obj_attribute_list *in_list;
8e79c3df 8388 obj_attribute_list *out_list;
91e22acd 8389 obj_attribute_list **out_listp;
ee065d83
PB
8390 /* Some tags have 0 = don't care, 1 = strong requirement,
8391 2 = weak requirement. */
91e22acd 8392 static const int order_021[3] = {0, 2, 1};
b1cc4aeb
PB
8393 /* For use with Tag_VFP_arch. */
8394 static const int order_01243[5] = {0, 1, 2, 4, 3};
ee065d83 8395 int i;
91e22acd 8396 bfd_boolean result = TRUE;
ee065d83 8397
104d59d1 8398 if (!elf_known_obj_attributes_proc (obfd)[0].i)
ee065d83
PB
8399 {
8400 /* This is the first object. Copy the attributes. */
104d59d1 8401 _bfd_elf_copy_obj_attributes (ibfd, obfd);
004ae526
PB
8402
8403 /* Use the Tag_null value to indicate the attributes have been
8404 initialized. */
104d59d1 8405 elf_known_obj_attributes_proc (obfd)[0].i = 1;
004ae526 8406
ee065d83
PB
8407 return TRUE;
8408 }
8409
104d59d1
JM
8410 in_attr = elf_known_obj_attributes_proc (ibfd);
8411 out_attr = elf_known_obj_attributes_proc (obfd);
ee065d83
PB
8412 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8413 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
8414 {
8e79c3df 8415 /* Ignore mismatches if the object doesn't use floating point. */
ee065d83
PB
8416 if (out_attr[Tag_ABI_FP_number_model].i == 0)
8417 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
8418 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
8419 {
8420 _bfd_error_handler
8421 (_("ERROR: %B uses VFP register arguments, %B does not"),
8422 ibfd, obfd);
91e22acd 8423 result = FALSE;
ee065d83
PB
8424 }
8425 }
8426
104d59d1 8427 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
ee065d83
PB
8428 {
8429 /* Merge this attribute with existing attributes. */
8430 switch (i)
8431 {
8432 case Tag_CPU_raw_name:
8433 case Tag_CPU_name:
91e22acd 8434 /* These are merged after Tag_CPU_arch. */
ee065d83
PB
8435 break;
8436
8437 case Tag_ABI_optimization_goals:
8438 case Tag_ABI_FP_optimization_goals:
8439 /* Use the first value seen. */
8440 break;
8441
8442 case Tag_CPU_arch:
91e22acd
AS
8443 {
8444 int secondary_compat = -1, secondary_compat_out = -1;
8445 unsigned int saved_out_attr = out_attr[i].i;
8446 static const char *name_table[] = {
8447 /* These aren't real CPU names, but we can't guess
8448 that from the architecture version alone. */
8449 "Pre v4",
8450 "ARM v4",
8451 "ARM v4T",
8452 "ARM v5T",
8453 "ARM v5TE",
8454 "ARM v5TEJ",
8455 "ARM v6",
8456 "ARM v6KZ",
8457 "ARM v6T2",
8458 "ARM v6K",
8459 "ARM v7",
8460 "ARM v6-M",
8461 "ARM v6S-M"
8462 };
8463
8464 /* Merge Tag_CPU_arch and Tag_also_compatible_with. */
8465 secondary_compat = get_secondary_compatible_arch (ibfd);
8466 secondary_compat_out = get_secondary_compatible_arch (obfd);
8467 out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i,
8468 &secondary_compat_out,
8469 in_attr[i].i,
8470 secondary_compat);
8471 set_secondary_compatible_arch (obfd, secondary_compat_out);
8472
8473 /* Merge Tag_CPU_name and Tag_CPU_raw_name. */
8474 if (out_attr[i].i == saved_out_attr)
8475 ; /* Leave the names alone. */
8476 else if (out_attr[i].i == in_attr[i].i)
8477 {
8478 /* The output architecture has been changed to match the
8479 input architecture. Use the input names. */
8480 out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s
8481 ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s)
8482 : NULL;
8483 out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s
8484 ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s)
8485 : NULL;
8486 }
8487 else
8488 {
8489 out_attr[Tag_CPU_name].s = NULL;
8490 out_attr[Tag_CPU_raw_name].s = NULL;
8491 }
8492
8493 /* If we still don't have a value for Tag_CPU_name,
8494 make one up now. Tag_CPU_raw_name remains blank. */
8495 if (out_attr[Tag_CPU_name].s == NULL
8496 && out_attr[i].i < ARRAY_SIZE (name_table))
8497 out_attr[Tag_CPU_name].s =
8498 _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]);
8499 }
8500 break;
8501
ee065d83
PB
8502 case Tag_ARM_ISA_use:
8503 case Tag_THUMB_ISA_use:
ee065d83 8504 case Tag_WMMX_arch:
91e22acd
AS
8505 case Tag_Advanced_SIMD_arch:
8506 /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */
ee065d83 8507 case Tag_ABI_FP_rounding:
ee065d83
PB
8508 case Tag_ABI_FP_exceptions:
8509 case Tag_ABI_FP_user_exceptions:
8510 case Tag_ABI_FP_number_model:
91e22acd
AS
8511 case Tag_VFP_HP_extension:
8512 case Tag_CPU_unaligned_access:
8513 case Tag_T2EE_use:
8514 case Tag_Virtualization_use:
8515 case Tag_MPextension_use:
ee065d83
PB
8516 /* Use the largest value specified. */
8517 if (in_attr[i].i > out_attr[i].i)
8518 out_attr[i].i = in_attr[i].i;
8519 break;
8520
91e22acd
AS
8521 case Tag_ABI_align8_preserved:
8522 case Tag_ABI_PCS_RO_data:
8523 /* Use the smallest value specified. */
8524 if (in_attr[i].i < out_attr[i].i)
8525 out_attr[i].i = in_attr[i].i;
8526 break;
8527
8528 case Tag_ABI_align8_needed:
8529 if ((in_attr[i].i > 0 || out_attr[i].i > 0)
8530 && (in_attr[Tag_ABI_align8_preserved].i == 0
8531 || out_attr[Tag_ABI_align8_preserved].i == 0))
ee065d83 8532 {
91e22acd
AS
8533 /* This error message should be enabled once all non-conformant
8534 binaries in the toolchain have had the attributes set
8535 properly.
ee065d83 8536 _bfd_error_handler
91e22acd
AS
8537 (_("ERROR: %B: 8-byte data alignment conflicts with %B"),
8538 obfd, ibfd);
8539 result = FALSE; */
ee065d83 8540 }
91e22acd
AS
8541 /* Fall through. */
8542 case Tag_ABI_FP_denormal:
8543 case Tag_ABI_PCS_GOT_use:
8544 /* Use the "greatest" from the sequence 0, 2, 1, or the largest
8545 value if greater than 2 (for future-proofing). */
8546 if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i)
8547 || (in_attr[i].i <= 2 && out_attr[i].i <= 2
8548 && order_021[in_attr[i].i] > order_021[out_attr[i].i]))
ee065d83
PB
8549 out_attr[i].i = in_attr[i].i;
8550 break;
91e22acd
AS
8551
8552
8553 case Tag_CPU_arch_profile:
8554 if (out_attr[i].i != in_attr[i].i)
8555 {
8556 /* 0 will merge with anything.
8557 'A' and 'S' merge to 'A'.
8558 'R' and 'S' merge to 'R'.
8559 'M' and 'A|R|S' is an error. */
8560 if (out_attr[i].i == 0
8561 || (out_attr[i].i == 'S'
8562 && (in_attr[i].i == 'A' || in_attr[i].i == 'R')))
8563 out_attr[i].i = in_attr[i].i;
8564 else if (in_attr[i].i == 0
8565 || (in_attr[i].i == 'S'
8566 && (out_attr[i].i == 'A' || out_attr[i].i == 'R')))
8567 ; /* Do nothing. */
8568 else
8569 {
8570 _bfd_error_handler
8571 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
8572 ibfd,
8573 in_attr[i].i ? in_attr[i].i : '0',
8574 out_attr[i].i ? out_attr[i].i : '0');
8575 result = FALSE;
8576 }
8577 }
8578 break;
b1cc4aeb 8579 case Tag_VFP_arch:
91e22acd
AS
8580 /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the
8581 largest value if greater than 4 (for future-proofing). */
8582 if ((in_attr[i].i > 4 && in_attr[i].i > out_attr[i].i)
8583 || (in_attr[i].i <= 4 && out_attr[i].i <= 4
8584 && order_01243[in_attr[i].i] > order_01243[out_attr[i].i]))
b1cc4aeb
PB
8585 out_attr[i].i = in_attr[i].i;
8586 break;
ee065d83
PB
8587 case Tag_PCS_config:
8588 if (out_attr[i].i == 0)
8589 out_attr[i].i = in_attr[i].i;
8590 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
8591 {
8592 /* It's sometimes ok to mix different configs, so this is only
8593 a warning. */
8594 _bfd_error_handler
8595 (_("Warning: %B: Conflicting platform configuration"), ibfd);
8596 }
8597 break;
8598 case Tag_ABI_PCS_R9_use:
004ae526
PB
8599 if (in_attr[i].i != out_attr[i].i
8600 && out_attr[i].i != AEABI_R9_unused
ee065d83
PB
8601 && in_attr[i].i != AEABI_R9_unused)
8602 {
8603 _bfd_error_handler
8604 (_("ERROR: %B: Conflicting use of R9"), ibfd);
91e22acd 8605 result = FALSE;
ee065d83
PB
8606 }
8607 if (out_attr[i].i == AEABI_R9_unused)
8608 out_attr[i].i = in_attr[i].i;
8609 break;
8610 case Tag_ABI_PCS_RW_data:
8611 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
8612 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
8613 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
8614 {
8615 _bfd_error_handler
8616 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
8617 ibfd);
91e22acd 8618 result = FALSE;
ee065d83
PB
8619 }
8620 /* Use the smallest value specified. */
8621 if (in_attr[i].i < out_attr[i].i)
8622 out_attr[i].i = in_attr[i].i;
8623 break;
ee065d83 8624 case Tag_ABI_PCS_wchar_t:
a9dc9481
JM
8625 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i
8626 && !elf_arm_tdata (obfd)->no_wchar_size_warning)
ee065d83
PB
8627 {
8628 _bfd_error_handler
a9dc9481
JM
8629 (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
8630 ibfd, in_attr[i].i, out_attr[i].i);
ee065d83 8631 }
a9dc9481 8632 else if (in_attr[i].i && !out_attr[i].i)
ee065d83
PB
8633 out_attr[i].i = in_attr[i].i;
8634 break;
ee065d83
PB
8635 case Tag_ABI_enum_size:
8636 if (in_attr[i].i != AEABI_enum_unused)
8637 {
8638 if (out_attr[i].i == AEABI_enum_unused
8639 || out_attr[i].i == AEABI_enum_forced_wide)
8640 {
8641 /* The existing object is compatible with anything.
8642 Use whatever requirements the new object has. */
8643 out_attr[i].i = in_attr[i].i;
8644 }
8645 else if (in_attr[i].i != AEABI_enum_forced_wide
bf21ed78 8646 && out_attr[i].i != in_attr[i].i
0ffa91dd 8647 && !elf_arm_tdata (obfd)->no_enum_size_warning)
ee065d83 8648 {
91e22acd 8649 static const char *aeabi_enum_names[] =
bf21ed78 8650 { "", "variable-size", "32-bit", "" };
91e22acd
AS
8651 const char *in_name =
8652 in_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
8653 ? aeabi_enum_names[in_attr[i].i]
8654 : "<unknown>";
8655 const char *out_name =
8656 out_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
8657 ? aeabi_enum_names[out_attr[i].i]
8658 : "<unknown>";
ee065d83 8659 _bfd_error_handler
bf21ed78 8660 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
91e22acd 8661 ibfd, in_name, out_name);
ee065d83
PB
8662 }
8663 }
8664 break;
8665 case Tag_ABI_VFP_args:
8666 /* Aready done. */
8667 break;
8668 case Tag_ABI_WMMX_args:
8669 if (in_attr[i].i != out_attr[i].i)
8670 {
8671 _bfd_error_handler
8672 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
8673 ibfd, obfd);
91e22acd 8674 result = FALSE;
ee065d83
PB
8675 }
8676 break;
7b86a9fa
AS
8677 case Tag_compatibility:
8678 /* Merged in target-independent code. */
8679 break;
91e22acd
AS
8680 case Tag_ABI_HardFP_use:
8681 /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */
8682 if ((in_attr[i].i == 1 && out_attr[i].i == 2)
8683 || (in_attr[i].i == 2 && out_attr[i].i == 1))
8684 out_attr[i].i = 3;
8685 else if (in_attr[i].i > out_attr[i].i)
8686 out_attr[i].i = in_attr[i].i;
8687 break;
8688 case Tag_ABI_FP_16bit_format:
8689 if (in_attr[i].i != 0 && out_attr[i].i != 0)
8690 {
8691 if (in_attr[i].i != out_attr[i].i)
8692 {
8693 _bfd_error_handler
8694 (_("ERROR: fp16 format mismatch between %B and %B"),
8695 ibfd, obfd);
8696 result = FALSE;
8697 }
8698 }
8699 if (in_attr[i].i != 0)
8700 out_attr[i].i = in_attr[i].i;
8701 break;
7b86a9fa 8702
91e22acd 8703 case Tag_nodefaults:
2d0bb761
AS
8704 /* This tag is set if it exists, but the value is unused (and is
8705 typically zero). We don't actually need to do anything here -
8706 the merge happens automatically when the type flags are merged
8707 below. */
91e22acd
AS
8708 break;
8709 case Tag_also_compatible_with:
8710 /* Already done in Tag_CPU_arch. */
8711 break;
8712 case Tag_conformance:
8713 /* Keep the attribute if it matches. Throw it away otherwise.
8714 No attribute means no claim to conform. */
8715 if (!in_attr[i].s || !out_attr[i].s
8716 || strcmp (in_attr[i].s, out_attr[i].s) != 0)
8717 out_attr[i].s = NULL;
8718 break;
3cfad14c 8719
91e22acd 8720 default:
3cfad14c 8721 {
91e22acd
AS
8722 bfd *err_bfd = NULL;
8723
8724 /* The "known_obj_attributes" table does contain some undefined
8725 attributes. Ensure that there are unused. */
8726 if (out_attr[i].i != 0 || out_attr[i].s != NULL)
8727 err_bfd = obfd;
8728 else if (in_attr[i].i != 0 || in_attr[i].s != NULL)
8729 err_bfd = ibfd;
8730
8731 if (err_bfd != NULL)
8732 {
8733 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
8734 if ((i & 127) < 64)
8735 {
8736 _bfd_error_handler
8737 (_("%B: Unknown mandatory EABI object attribute %d"),
8738 err_bfd, i);
8739 bfd_set_error (bfd_error_bad_value);
8740 result = FALSE;
8741 }
8742 else
8743 {
8744 _bfd_error_handler
8745 (_("Warning: %B: Unknown EABI object attribute %d"),
8746 err_bfd, i);
8747 }
8748 }
8749
8750 /* Only pass on attributes that match in both inputs. */
8751 if (in_attr[i].i != out_attr[i].i
8752 || in_attr[i].s != out_attr[i].s
8753 || (in_attr[i].s != NULL && out_attr[i].s != NULL
8754 && strcmp (in_attr[i].s, out_attr[i].s) != 0))
8755 {
8756 out_attr[i].i = 0;
8757 out_attr[i].s = NULL;
8758 }
3cfad14c 8759 }
91e22acd
AS
8760 }
8761
8762 /* If out_attr was copied from in_attr then it won't have a type yet. */
8763 if (in_attr[i].type && !out_attr[i].type)
8764 out_attr[i].type = in_attr[i].type;
ee065d83
PB
8765 }
8766
104d59d1
JM
8767 /* Merge Tag_compatibility attributes and any common GNU ones. */
8768 _bfd_elf_merge_object_attributes (ibfd, obfd);
ee065d83 8769
104d59d1
JM
8770 /* Check for any attributes not known on ARM. */
8771 in_list = elf_other_obj_attributes_proc (ibfd);
91e22acd
AS
8772 out_listp = &elf_other_obj_attributes_proc (obfd);
8773 out_list = *out_listp;
8e79c3df 8774
91e22acd 8775 for (; in_list || out_list; )
ee065d83 8776 {
91e22acd
AS
8777 bfd *err_bfd = NULL;
8778 int err_tag = 0;
8e79c3df
CM
8779
8780 /* The tags for each list are in numerical order. */
8781 /* If the tags are equal, then merge. */
91e22acd 8782 if (out_list && (!in_list || in_list->tag > out_list->tag))
8e79c3df 8783 {
91e22acd
AS
8784 /* This attribute only exists in obfd. We can't merge, and we don't
8785 know what the tag means, so delete it. */
8786 err_bfd = obfd;
8787 err_tag = out_list->tag;
8788 *out_listp = out_list->next;
8789 out_list = *out_listp;
8e79c3df 8790 }
91e22acd 8791 else if (in_list && (!out_list || in_list->tag < out_list->tag))
8e79c3df 8792 {
91e22acd
AS
8793 /* This attribute only exists in ibfd. We can't merge, and we don't
8794 know what the tag means, so ignore it. */
8795 err_bfd = ibfd;
8796 err_tag = in_list->tag;
8e79c3df 8797 in_list = in_list->next;
eb111b1f 8798 }
91e22acd
AS
8799 else /* The tags are equal. */
8800 {
8801 /* As present, all attributes in the list are unknown, and
8802 therefore can't be merged meaningfully. */
8803 err_bfd = obfd;
8804 err_tag = out_list->tag;
8805
8806 /* Only pass on attributes that match in both inputs. */
8807 if (in_list->attr.i != out_list->attr.i
8808 || in_list->attr.s != out_list->attr.s
8809 || (in_list->attr.s && out_list->attr.s
8810 && strcmp (in_list->attr.s, out_list->attr.s) != 0))
8811 {
8812 /* No match. Delete the attribute. */
8813 *out_listp = out_list->next;
8814 out_list = *out_listp;
8815 }
8816 else
8817 {
8818 /* Matched. Keep the attribute and move to the next. */
8819 out_list = out_list->next;
8820 in_list = in_list->next;
8821 }
8822 }
8823
8824 if (err_bfd)
8825 {
8826 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
8827 if ((err_tag & 127) < 64)
8828 {
8829 _bfd_error_handler
8830 (_("%B: Unknown mandatory EABI object attribute %d"),
8831 err_bfd, err_tag);
8832 bfd_set_error (bfd_error_bad_value);
8833 result = FALSE;
8834 }
8835 else
8836 {
8837 _bfd_error_handler
8838 (_("Warning: %B: Unknown EABI object attribute %d"),
8839 err_bfd, err_tag);
8840 }
8841 }
ee065d83 8842 }
91e22acd 8843 return result;
252b5132
RH
8844}
8845
3a4a14e9
PB
8846
8847/* Return TRUE if the two EABI versions are incompatible. */
8848
8849static bfd_boolean
8850elf32_arm_versions_compatible (unsigned iver, unsigned over)
8851{
8852 /* v4 and v5 are the same spec before and after it was released,
8853 so allow mixing them. */
8854 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
8855 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
8856 return TRUE;
8857
8858 return (iver == over);
8859}
8860
252b5132
RH
8861/* Merge backend specific data from an object file to the output
8862 object file when linking. */
9b485d32 8863
b34976b6 8864static bfd_boolean
57e8b36a 8865elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
252b5132
RH
8866{
8867 flagword out_flags;
8868 flagword in_flags;
b34976b6 8869 bfd_boolean flags_compatible = TRUE;
cf919dfd 8870 asection *sec;
252b5132 8871
9b485d32 8872 /* Check if we have the same endianess. */
82e51918 8873 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 8874 return FALSE;
1fe494a5 8875
0ffa91dd 8876 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
b34976b6 8877 return TRUE;
252b5132 8878
ee065d83
PB
8879 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
8880 return FALSE;
8881
252b5132
RH
8882 /* The input BFD must have had its flags initialised. */
8883 /* The following seems bogus to me -- The flags are initialized in
8884 the assembler but I don't think an elf_flags_init field is
9b485d32 8885 written into the object. */
252b5132
RH
8886 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8887
8888 in_flags = elf_elfheader (ibfd)->e_flags;
8889 out_flags = elf_elfheader (obfd)->e_flags;
8890
23684067
PB
8891 /* In theory there is no reason why we couldn't handle this. However
8892 in practice it isn't even close to working and there is no real
8893 reason to want it. */
8894 if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4
c13bb2ea 8895 && !(ibfd->flags & DYNAMIC)
23684067
PB
8896 && (in_flags & EF_ARM_BE8))
8897 {
8029a119 8898 _bfd_error_handler (_("ERROR: %B is already in final BE8 format"),
23684067
PB
8899 ibfd);
8900 return FALSE;
8901 }
8902
252b5132
RH
8903 if (!elf_flags_init (obfd))
8904 {
fe077fa6
NC
8905 /* If the input is the default architecture and had the default
8906 flags then do not bother setting the flags for the output
8907 architecture, instead allow future merges to do this. If no
8908 future merges ever set these flags then they will retain their
8909 uninitialised values, which surprise surprise, correspond
252b5132 8910 to the default values. */
fe077fa6
NC
8911 if (bfd_get_arch_info (ibfd)->the_default
8912 && elf_elfheader (ibfd)->e_flags == 0)
b34976b6 8913 return TRUE;
252b5132 8914
b34976b6 8915 elf_flags_init (obfd) = TRUE;
252b5132
RH
8916 elf_elfheader (obfd)->e_flags = in_flags;
8917
8918 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
8919 && bfd_get_arch_info (obfd)->the_default)
8920 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
8921
b34976b6 8922 return TRUE;
252b5132
RH
8923 }
8924
5a6c6817
NC
8925 /* Determine what should happen if the input ARM architecture
8926 does not match the output ARM architecture. */
8927 if (! bfd_arm_merge_machines (ibfd, obfd))
8928 return FALSE;
e16bb312 8929
1006ba19 8930 /* Identical flags must be compatible. */
252b5132 8931 if (in_flags == out_flags)
b34976b6 8932 return TRUE;
252b5132 8933
35a0f415
DJ
8934 /* Check to see if the input BFD actually contains any sections. If
8935 not, its flags may not have been initialised either, but it
8e3de13a 8936 cannot actually cause any incompatiblity. Do not short-circuit
35a0f415 8937 dynamic objects; their section list may be emptied by
d1f161ea 8938 elf_link_add_object_symbols.
35a0f415 8939
d1f161ea
NC
8940 Also check to see if there are no code sections in the input.
8941 In this case there is no need to check for code specific flags.
8942 XXX - do we need to worry about floating-point format compatability
8943 in data sections ? */
35a0f415 8944 if (!(ibfd->flags & DYNAMIC))
cf919dfd 8945 {
35a0f415 8946 bfd_boolean null_input_bfd = TRUE;
d1f161ea 8947 bfd_boolean only_data_sections = TRUE;
35a0f415
DJ
8948
8949 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
cf919dfd 8950 {
35a0f415
DJ
8951 /* Ignore synthetic glue sections. */
8952 if (strcmp (sec->name, ".glue_7")
8953 && strcmp (sec->name, ".glue_7t"))
8954 {
d1f161ea
NC
8955 if ((bfd_get_section_flags (ibfd, sec)
8956 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
8957 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
8958 only_data_sections = FALSE;
8959
35a0f415
DJ
8960 null_input_bfd = FALSE;
8961 break;
8962 }
cf919dfd 8963 }
d1f161ea
NC
8964
8965 if (null_input_bfd || only_data_sections)
35a0f415 8966 return TRUE;
cf919dfd 8967 }
cf919dfd 8968
252b5132 8969 /* Complain about various flag mismatches. */
3a4a14e9
PB
8970 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
8971 EF_ARM_EABI_VERSION (out_flags)))
fc830a83 8972 {
d003868e 8973 _bfd_error_handler
3656d5e3 8974 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
d003868e
AM
8975 ibfd, obfd,
8976 (in_flags & EF_ARM_EABIMASK) >> 24,
8977 (out_flags & EF_ARM_EABIMASK) >> 24);
b34976b6 8978 return FALSE;
fc830a83 8979 }
252b5132 8980
1006ba19 8981 /* Not sure what needs to be checked for EABI versions >= 1. */
00a97672
RS
8982 /* VxWorks libraries do not use these flags. */
8983 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
8984 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
8985 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
1006ba19 8986 {
fd2ec330 8987 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
1006ba19 8988 {
d003868e
AM
8989 _bfd_error_handler
8990 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
8991 ibfd, obfd,
8992 in_flags & EF_ARM_APCS_26 ? 26 : 32,
8993 out_flags & EF_ARM_APCS_26 ? 26 : 32);
b34976b6 8994 flags_compatible = FALSE;
1006ba19 8995 }
252b5132 8996
fd2ec330 8997 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
1006ba19 8998 {
5eefb65f 8999 if (in_flags & EF_ARM_APCS_FLOAT)
d003868e
AM
9000 _bfd_error_handler
9001 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
9002 ibfd, obfd);
5eefb65f 9003 else
d003868e
AM
9004 _bfd_error_handler
9005 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
9006 ibfd, obfd);
63b0f745 9007
b34976b6 9008 flags_compatible = FALSE;
1006ba19 9009 }
252b5132 9010
96a846ea 9011 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
1006ba19 9012 {
96a846ea 9013 if (in_flags & EF_ARM_VFP_FLOAT)
d003868e
AM
9014 _bfd_error_handler
9015 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
9016 ibfd, obfd);
5eefb65f 9017 else
d003868e
AM
9018 _bfd_error_handler
9019 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
9020 ibfd, obfd);
fde78edd
NC
9021
9022 flags_compatible = FALSE;
9023 }
9024
9025 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
9026 {
9027 if (in_flags & EF_ARM_MAVERICK_FLOAT)
d003868e
AM
9028 _bfd_error_handler
9029 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
9030 ibfd, obfd);
fde78edd 9031 else
d003868e
AM
9032 _bfd_error_handler
9033 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
9034 ibfd, obfd);
63b0f745 9035
b34976b6 9036 flags_compatible = FALSE;
1006ba19 9037 }
96a846ea
RE
9038
9039#ifdef EF_ARM_SOFT_FLOAT
9040 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
9041 {
9042 /* We can allow interworking between code that is VFP format
9043 layout, and uses either soft float or integer regs for
9044 passing floating point arguments and results. We already
9045 know that the APCS_FLOAT flags match; similarly for VFP
9046 flags. */
9047 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
9048 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
9049 {
9050 if (in_flags & EF_ARM_SOFT_FLOAT)
d003868e
AM
9051 _bfd_error_handler
9052 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
9053 ibfd, obfd);
96a846ea 9054 else
d003868e
AM
9055 _bfd_error_handler
9056 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
9057 ibfd, obfd);
96a846ea 9058
b34976b6 9059 flags_compatible = FALSE;
96a846ea
RE
9060 }
9061 }
ee43f35e 9062#endif
252b5132 9063
1006ba19 9064 /* Interworking mismatch is only a warning. */
fd2ec330 9065 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8f615d07 9066 {
e3c8793a
NC
9067 if (in_flags & EF_ARM_INTERWORK)
9068 {
d003868e
AM
9069 _bfd_error_handler
9070 (_("Warning: %B supports interworking, whereas %B does not"),
9071 ibfd, obfd);
e3c8793a
NC
9072 }
9073 else
9074 {
d003868e
AM
9075 _bfd_error_handler
9076 (_("Warning: %B does not support interworking, whereas %B does"),
9077 ibfd, obfd);
e3c8793a 9078 }
8f615d07 9079 }
252b5132 9080 }
63b0f745 9081
1006ba19 9082 return flags_compatible;
252b5132
RH
9083}
9084
9b485d32
NC
9085/* Display the flags field. */
9086
b34976b6 9087static bfd_boolean
57e8b36a 9088elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132 9089{
fc830a83
NC
9090 FILE * file = (FILE *) ptr;
9091 unsigned long flags;
252b5132
RH
9092
9093 BFD_ASSERT (abfd != NULL && ptr != NULL);
9094
9095 /* Print normal ELF private data. */
9096 _bfd_elf_print_private_bfd_data (abfd, ptr);
9097
fc830a83 9098 flags = elf_elfheader (abfd)->e_flags;
9b485d32
NC
9099 /* Ignore init flag - it may not be set, despite the flags field
9100 containing valid data. */
252b5132
RH
9101
9102 /* xgettext:c-format */
9b485d32 9103 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
252b5132 9104
fc830a83
NC
9105 switch (EF_ARM_EABI_VERSION (flags))
9106 {
9107 case EF_ARM_EABI_UNKNOWN:
4cc11e76 9108 /* The following flag bits are GNU extensions and not part of the
fc830a83
NC
9109 official ARM ELF extended ABI. Hence they are only decoded if
9110 the EABI version is not set. */
fd2ec330 9111 if (flags & EF_ARM_INTERWORK)
9b485d32 9112 fprintf (file, _(" [interworking enabled]"));
9a5aca8c 9113
fd2ec330 9114 if (flags & EF_ARM_APCS_26)
6c571f00 9115 fprintf (file, " [APCS-26]");
fc830a83 9116 else
6c571f00 9117 fprintf (file, " [APCS-32]");
9a5aca8c 9118
96a846ea
RE
9119 if (flags & EF_ARM_VFP_FLOAT)
9120 fprintf (file, _(" [VFP float format]"));
fde78edd
NC
9121 else if (flags & EF_ARM_MAVERICK_FLOAT)
9122 fprintf (file, _(" [Maverick float format]"));
96a846ea
RE
9123 else
9124 fprintf (file, _(" [FPA float format]"));
9125
fd2ec330 9126 if (flags & EF_ARM_APCS_FLOAT)
9b485d32 9127 fprintf (file, _(" [floats passed in float registers]"));
9a5aca8c 9128
fd2ec330 9129 if (flags & EF_ARM_PIC)
9b485d32 9130 fprintf (file, _(" [position independent]"));
fc830a83 9131
fd2ec330 9132 if (flags & EF_ARM_NEW_ABI)
9b485d32 9133 fprintf (file, _(" [new ABI]"));
9a5aca8c 9134
fd2ec330 9135 if (flags & EF_ARM_OLD_ABI)
9b485d32 9136 fprintf (file, _(" [old ABI]"));
9a5aca8c 9137
fd2ec330 9138 if (flags & EF_ARM_SOFT_FLOAT)
9b485d32 9139 fprintf (file, _(" [software FP]"));
9a5aca8c 9140
96a846ea
RE
9141 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
9142 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
fde78edd
NC
9143 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
9144 | EF_ARM_MAVERICK_FLOAT);
fc830a83 9145 break;
9a5aca8c 9146
fc830a83 9147 case EF_ARM_EABI_VER1:
9b485d32 9148 fprintf (file, _(" [Version1 EABI]"));
9a5aca8c 9149
fc830a83 9150 if (flags & EF_ARM_SYMSARESORTED)
9b485d32 9151 fprintf (file, _(" [sorted symbol table]"));
fc830a83 9152 else
9b485d32 9153 fprintf (file, _(" [unsorted symbol table]"));
9a5aca8c 9154
fc830a83
NC
9155 flags &= ~ EF_ARM_SYMSARESORTED;
9156 break;
9a5aca8c 9157
fd2ec330
PB
9158 case EF_ARM_EABI_VER2:
9159 fprintf (file, _(" [Version2 EABI]"));
9160
9161 if (flags & EF_ARM_SYMSARESORTED)
9162 fprintf (file, _(" [sorted symbol table]"));
9163 else
9164 fprintf (file, _(" [unsorted symbol table]"));
9165
9166 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
9167 fprintf (file, _(" [dynamic symbols use segment index]"));
9168
9169 if (flags & EF_ARM_MAPSYMSFIRST)
9170 fprintf (file, _(" [mapping symbols precede others]"));
9171
99e4ae17 9172 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
fd2ec330
PB
9173 | EF_ARM_MAPSYMSFIRST);
9174 break;
9175
d507cf36
PB
9176 case EF_ARM_EABI_VER3:
9177 fprintf (file, _(" [Version3 EABI]"));
8cb51566
PB
9178 break;
9179
9180 case EF_ARM_EABI_VER4:
9181 fprintf (file, _(" [Version4 EABI]"));
3a4a14e9 9182 goto eabi;
d507cf36 9183
3a4a14e9
PB
9184 case EF_ARM_EABI_VER5:
9185 fprintf (file, _(" [Version5 EABI]"));
9186 eabi:
d507cf36
PB
9187 if (flags & EF_ARM_BE8)
9188 fprintf (file, _(" [BE8]"));
9189
9190 if (flags & EF_ARM_LE8)
9191 fprintf (file, _(" [LE8]"));
9192
9193 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
9194 break;
9195
fc830a83 9196 default:
9b485d32 9197 fprintf (file, _(" <EABI version unrecognised>"));
fc830a83
NC
9198 break;
9199 }
252b5132 9200
fc830a83 9201 flags &= ~ EF_ARM_EABIMASK;
252b5132 9202
fc830a83 9203 if (flags & EF_ARM_RELEXEC)
9b485d32 9204 fprintf (file, _(" [relocatable executable]"));
252b5132 9205
fc830a83 9206 if (flags & EF_ARM_HASENTRY)
9b485d32 9207 fprintf (file, _(" [has entry point]"));
252b5132 9208
fc830a83
NC
9209 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
9210
9211 if (flags)
9b485d32 9212 fprintf (file, _("<Unrecognised flag bits set>"));
9a5aca8c 9213
252b5132
RH
9214 fputc ('\n', file);
9215
b34976b6 9216 return TRUE;
252b5132
RH
9217}
9218
9219static int
57e8b36a 9220elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
252b5132 9221{
2f0ca46a
NC
9222 switch (ELF_ST_TYPE (elf_sym->st_info))
9223 {
9224 case STT_ARM_TFUNC:
9225 return ELF_ST_TYPE (elf_sym->st_info);
ce855c42 9226
2f0ca46a
NC
9227 case STT_ARM_16BIT:
9228 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
9229 This allows us to distinguish between data used by Thumb instructions
9230 and non-data (which is probably code) inside Thumb regions of an
9231 executable. */
1a0eb693 9232 if (type != STT_OBJECT && type != STT_TLS)
2f0ca46a
NC
9233 return ELF_ST_TYPE (elf_sym->st_info);
9234 break;
9a5aca8c 9235
ce855c42
NC
9236 default:
9237 break;
2f0ca46a
NC
9238 }
9239
9240 return type;
252b5132 9241}
f21f3fe0 9242
252b5132 9243static asection *
07adf181
AM
9244elf32_arm_gc_mark_hook (asection *sec,
9245 struct bfd_link_info *info,
9246 Elf_Internal_Rela *rel,
9247 struct elf_link_hash_entry *h,
9248 Elf_Internal_Sym *sym)
252b5132
RH
9249{
9250 if (h != NULL)
07adf181 9251 switch (ELF32_R_TYPE (rel->r_info))
252b5132
RH
9252 {
9253 case R_ARM_GNU_VTINHERIT:
9254 case R_ARM_GNU_VTENTRY:
07adf181
AM
9255 return NULL;
9256 }
9ad5cbcf 9257
07adf181 9258 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH
9259}
9260
780a67af
NC
9261/* Update the got entry reference counts for the section being removed. */
9262
b34976b6 9263static bfd_boolean
ba93b8ac
DJ
9264elf32_arm_gc_sweep_hook (bfd * abfd,
9265 struct bfd_link_info * info,
9266 asection * sec,
9267 const Elf_Internal_Rela * relocs)
252b5132 9268{
5e681ec4
PB
9269 Elf_Internal_Shdr *symtab_hdr;
9270 struct elf_link_hash_entry **sym_hashes;
9271 bfd_signed_vma *local_got_refcounts;
9272 const Elf_Internal_Rela *rel, *relend;
eb043451
PB
9273 struct elf32_arm_link_hash_table * globals;
9274
7dda2462
TG
9275 if (info->relocatable)
9276 return TRUE;
9277
eb043451 9278 globals = elf32_arm_hash_table (info);
5e681ec4
PB
9279
9280 elf_section_data (sec)->local_dynrel = NULL;
9281
0ffa91dd 9282 symtab_hdr = & elf_symtab_hdr (abfd);
5e681ec4
PB
9283 sym_hashes = elf_sym_hashes (abfd);
9284 local_got_refcounts = elf_local_got_refcounts (abfd);
9285
906e58ca 9286 check_use_blx (globals);
bd97cb95 9287
5e681ec4
PB
9288 relend = relocs + sec->reloc_count;
9289 for (rel = relocs; rel < relend; rel++)
eb043451 9290 {
3eb128b2
AM
9291 unsigned long r_symndx;
9292 struct elf_link_hash_entry *h = NULL;
eb043451 9293 int r_type;
5e681ec4 9294
3eb128b2
AM
9295 r_symndx = ELF32_R_SYM (rel->r_info);
9296 if (r_symndx >= symtab_hdr->sh_info)
9297 {
9298 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9299 while (h->root.type == bfd_link_hash_indirect
9300 || h->root.type == bfd_link_hash_warning)
9301 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9302 }
9303
eb043451 9304 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 9305 r_type = arm_real_reloc_type (globals, r_type);
eb043451
PB
9306 switch (r_type)
9307 {
9308 case R_ARM_GOT32:
eb043451 9309 case R_ARM_GOT_PREL:
ba93b8ac
DJ
9310 case R_ARM_TLS_GD32:
9311 case R_ARM_TLS_IE32:
3eb128b2 9312 if (h != NULL)
eb043451 9313 {
eb043451
PB
9314 if (h->got.refcount > 0)
9315 h->got.refcount -= 1;
9316 }
9317 else if (local_got_refcounts != NULL)
9318 {
9319 if (local_got_refcounts[r_symndx] > 0)
9320 local_got_refcounts[r_symndx] -= 1;
9321 }
9322 break;
9323
ba93b8ac
DJ
9324 case R_ARM_TLS_LDM32:
9325 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
9326 break;
9327
eb043451 9328 case R_ARM_ABS32:
bb224fc3 9329 case R_ARM_ABS32_NOI:
eb043451 9330 case R_ARM_REL32:
bb224fc3 9331 case R_ARM_REL32_NOI:
eb043451
PB
9332 case R_ARM_PC24:
9333 case R_ARM_PLT32:
5b5bb741
PB
9334 case R_ARM_CALL:
9335 case R_ARM_JUMP24:
eb043451 9336 case R_ARM_PREL31:
c19d1205 9337 case R_ARM_THM_CALL:
bd97cb95
DJ
9338 case R_ARM_THM_JUMP24:
9339 case R_ARM_THM_JUMP19:
b6895b4f
PB
9340 case R_ARM_MOVW_ABS_NC:
9341 case R_ARM_MOVT_ABS:
9342 case R_ARM_MOVW_PREL_NC:
9343 case R_ARM_MOVT_PREL:
9344 case R_ARM_THM_MOVW_ABS_NC:
9345 case R_ARM_THM_MOVT_ABS:
9346 case R_ARM_THM_MOVW_PREL_NC:
9347 case R_ARM_THM_MOVT_PREL:
b7693d02
DJ
9348 /* Should the interworking branches be here also? */
9349
3eb128b2 9350 if (h != NULL)
eb043451
PB
9351 {
9352 struct elf32_arm_link_hash_entry *eh;
9353 struct elf32_arm_relocs_copied **pp;
9354 struct elf32_arm_relocs_copied *p;
5e681ec4 9355
b7693d02 9356 eh = (struct elf32_arm_link_hash_entry *) h;
5e681ec4 9357
eb043451 9358 if (h->plt.refcount > 0)
b7693d02
DJ
9359 {
9360 h->plt.refcount -= 1;
bd97cb95
DJ
9361 if (r_type == R_ARM_THM_CALL)
9362 eh->plt_maybe_thumb_refcount--;
9363
9364 if (r_type == R_ARM_THM_JUMP24
9365 || r_type == R_ARM_THM_JUMP19)
b7693d02
DJ
9366 eh->plt_thumb_refcount--;
9367 }
5e681ec4 9368
eb043451 9369 if (r_type == R_ARM_ABS32
bb224fc3
MS
9370 || r_type == R_ARM_REL32
9371 || r_type == R_ARM_ABS32_NOI
9372 || r_type == R_ARM_REL32_NOI)
eb043451 9373 {
eb043451
PB
9374 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
9375 pp = &p->next)
9376 if (p->section == sec)
9377 {
9378 p->count -= 1;
bb224fc3
MS
9379 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
9380 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
ba93b8ac 9381 p->pc_count -= 1;
eb043451
PB
9382 if (p->count == 0)
9383 *pp = p->next;
9384 break;
9385 }
9386 }
9387 }
9388 break;
5e681ec4 9389
eb043451
PB
9390 default:
9391 break;
9392 }
9393 }
5e681ec4 9394
b34976b6 9395 return TRUE;
252b5132
RH
9396}
9397
780a67af
NC
9398/* Look through the relocs for a section during the first phase. */
9399
b34976b6 9400static bfd_boolean
57e8b36a
NC
9401elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
9402 asection *sec, const Elf_Internal_Rela *relocs)
252b5132 9403{
b34976b6
AM
9404 Elf_Internal_Shdr *symtab_hdr;
9405 struct elf_link_hash_entry **sym_hashes;
b34976b6
AM
9406 const Elf_Internal_Rela *rel;
9407 const Elf_Internal_Rela *rel_end;
9408 bfd *dynobj;
5e681ec4 9409 asection *sreloc;
b34976b6 9410 bfd_vma *local_got_offsets;
5e681ec4 9411 struct elf32_arm_link_hash_table *htab;
39623e12 9412 bfd_boolean needs_plt;
9a5aca8c 9413
1049f94e 9414 if (info->relocatable)
b34976b6 9415 return TRUE;
9a5aca8c 9416
0ffa91dd
NC
9417 BFD_ASSERT (is_arm_elf (abfd));
9418
5e681ec4
PB
9419 htab = elf32_arm_hash_table (info);
9420 sreloc = NULL;
9a5aca8c 9421
67687978
PB
9422 /* Create dynamic sections for relocatable executables so that we can
9423 copy relocations. */
9424 if (htab->root.is_relocatable_executable
9425 && ! htab->root.dynamic_sections_created)
9426 {
9427 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
9428 return FALSE;
9429 }
9430
252b5132
RH
9431 dynobj = elf_hash_table (info)->dynobj;
9432 local_got_offsets = elf_local_got_offsets (abfd);
f21f3fe0 9433
0ffa91dd 9434 symtab_hdr = & elf_symtab_hdr (abfd);
252b5132 9435 sym_hashes = elf_sym_hashes (abfd);
9b485d32 9436
252b5132
RH
9437 rel_end = relocs + sec->reloc_count;
9438 for (rel = relocs; rel < rel_end; rel++)
9439 {
9440 struct elf_link_hash_entry *h;
b7693d02 9441 struct elf32_arm_link_hash_entry *eh;
252b5132 9442 unsigned long r_symndx;
eb043451 9443 int r_type;
9a5aca8c 9444
252b5132 9445 r_symndx = ELF32_R_SYM (rel->r_info);
eb043451 9446 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 9447 r_type = arm_real_reloc_type (htab, r_type);
ba93b8ac
DJ
9448
9449 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
9450 {
9451 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
9452 r_symndx);
9453 return FALSE;
9454 }
9455
252b5132
RH
9456 if (r_symndx < symtab_hdr->sh_info)
9457 h = NULL;
9458 else
973a3492
L
9459 {
9460 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9461 while (h->root.type == bfd_link_hash_indirect
9462 || h->root.type == bfd_link_hash_warning)
9463 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9464 }
9a5aca8c 9465
b7693d02
DJ
9466 eh = (struct elf32_arm_link_hash_entry *) h;
9467
eb043451 9468 switch (r_type)
252b5132 9469 {
5e681ec4 9470 case R_ARM_GOT32:
eb043451 9471 case R_ARM_GOT_PREL:
ba93b8ac
DJ
9472 case R_ARM_TLS_GD32:
9473 case R_ARM_TLS_IE32:
5e681ec4 9474 /* This symbol requires a global offset table entry. */
ba93b8ac
DJ
9475 {
9476 int tls_type, old_tls_type;
5e681ec4 9477
ba93b8ac
DJ
9478 switch (r_type)
9479 {
9480 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
9481 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
9482 default: tls_type = GOT_NORMAL; break;
9483 }
252b5132 9484
ba93b8ac
DJ
9485 if (h != NULL)
9486 {
9487 h->got.refcount++;
9488 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
9489 }
9490 else
9491 {
9492 bfd_signed_vma *local_got_refcounts;
9493
9494 /* This is a global offset table entry for a local symbol. */
9495 local_got_refcounts = elf_local_got_refcounts (abfd);
9496 if (local_got_refcounts == NULL)
9497 {
9498 bfd_size_type size;
906e58ca 9499
ba93b8ac 9500 size = symtab_hdr->sh_info;
906e58ca 9501 size *= (sizeof (bfd_signed_vma) + sizeof (char));
ba93b8ac
DJ
9502 local_got_refcounts = bfd_zalloc (abfd, size);
9503 if (local_got_refcounts == NULL)
9504 return FALSE;
9505 elf_local_got_refcounts (abfd) = local_got_refcounts;
9506 elf32_arm_local_got_tls_type (abfd)
9507 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
9508 }
9509 local_got_refcounts[r_symndx] += 1;
9510 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
9511 }
9512
9513 /* We will already have issued an error message if there is a
9514 TLS / non-TLS mismatch, based on the symbol type. We don't
9515 support any linker relaxations. So just combine any TLS
9516 types needed. */
9517 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
9518 && tls_type != GOT_NORMAL)
9519 tls_type |= old_tls_type;
9520
9521 if (old_tls_type != tls_type)
9522 {
9523 if (h != NULL)
9524 elf32_arm_hash_entry (h)->tls_type = tls_type;
9525 else
9526 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
9527 }
9528 }
8029a119 9529 /* Fall through. */
ba93b8ac
DJ
9530
9531 case R_ARM_TLS_LDM32:
9532 if (r_type == R_ARM_TLS_LDM32)
9533 htab->tls_ldm_got.refcount++;
8029a119 9534 /* Fall through. */
252b5132 9535
c19d1205 9536 case R_ARM_GOTOFF32:
5e681ec4
PB
9537 case R_ARM_GOTPC:
9538 if (htab->sgot == NULL)
9539 {
9540 if (htab->root.dynobj == NULL)
9541 htab->root.dynobj = abfd;
9542 if (!create_got_section (htab->root.dynobj, info))
9543 return FALSE;
9544 }
252b5132
RH
9545 break;
9546
00a97672
RS
9547 case R_ARM_ABS12:
9548 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9549 ldr __GOTT_INDEX__ offsets. */
9550 if (!htab->vxworks_p)
9551 break;
8029a119 9552 /* Fall through. */
00a97672 9553
252b5132 9554 case R_ARM_PC24:
7359ea65 9555 case R_ARM_PLT32:
5b5bb741
PB
9556 case R_ARM_CALL:
9557 case R_ARM_JUMP24:
eb043451 9558 case R_ARM_PREL31:
c19d1205 9559 case R_ARM_THM_CALL:
bd97cb95
DJ
9560 case R_ARM_THM_JUMP24:
9561 case R_ARM_THM_JUMP19:
39623e12
PB
9562 needs_plt = 1;
9563 goto normal_reloc;
9564
9565 case R_ARM_ABS32:
9566 case R_ARM_ABS32_NOI:
9567 case R_ARM_REL32:
9568 case R_ARM_REL32_NOI:
b6895b4f
PB
9569 case R_ARM_MOVW_ABS_NC:
9570 case R_ARM_MOVT_ABS:
9571 case R_ARM_MOVW_PREL_NC:
9572 case R_ARM_MOVT_PREL:
9573 case R_ARM_THM_MOVW_ABS_NC:
9574 case R_ARM_THM_MOVT_ABS:
9575 case R_ARM_THM_MOVW_PREL_NC:
9576 case R_ARM_THM_MOVT_PREL:
39623e12
PB
9577 needs_plt = 0;
9578 normal_reloc:
9579
b7693d02 9580 /* Should the interworking branches be listed here? */
7359ea65 9581 if (h != NULL)
5e681ec4
PB
9582 {
9583 /* If this reloc is in a read-only section, we might
9584 need a copy reloc. We can't check reliably at this
9585 stage whether the section is read-only, as input
9586 sections have not yet been mapped to output sections.
9587 Tentatively set the flag for now, and correct in
9588 adjust_dynamic_symbol. */
7359ea65 9589 if (!info->shared)
f5385ebf 9590 h->non_got_ref = 1;
7359ea65 9591
5e681ec4 9592 /* We may need a .plt entry if the function this reloc
c84cd8ee
DJ
9593 refers to is in a different object. We can't tell for
9594 sure yet, because something later might force the
9595 symbol local. */
39623e12 9596 if (needs_plt)
f5385ebf 9597 h->needs_plt = 1;
4f199be3
DJ
9598
9599 /* If we create a PLT entry, this relocation will reference
9600 it, even if it's an ABS32 relocation. */
9601 h->plt.refcount += 1;
b7693d02 9602
bd97cb95
DJ
9603 /* It's too early to use htab->use_blx here, so we have to
9604 record possible blx references separately from
9605 relocs that definitely need a thumb stub. */
9606
c19d1205 9607 if (r_type == R_ARM_THM_CALL)
bd97cb95
DJ
9608 eh->plt_maybe_thumb_refcount += 1;
9609
9610 if (r_type == R_ARM_THM_JUMP24
9611 || r_type == R_ARM_THM_JUMP19)
b7693d02 9612 eh->plt_thumb_refcount += 1;
5e681ec4
PB
9613 }
9614
67687978
PB
9615 /* If we are creating a shared library or relocatable executable,
9616 and this is a reloc against a global symbol, or a non PC
9617 relative reloc against a local symbol, then we need to copy
9618 the reloc into the shared library. However, if we are linking
9619 with -Bsymbolic, we do not need to copy a reloc against a
252b5132
RH
9620 global symbol which is defined in an object we are
9621 including in the link (i.e., DEF_REGULAR is set). At
9622 this point we have not seen all the input files, so it is
9623 possible that DEF_REGULAR is not set now but will be set
9624 later (it is never cleared). We account for that
9625 possibility below by storing information in the
5e681ec4 9626 relocs_copied field of the hash table entry. */
67687978 9627 if ((info->shared || htab->root.is_relocatable_executable)
5e681ec4 9628 && (sec->flags & SEC_ALLOC) != 0
bb224fc3 9629 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
71a976dd
DJ
9630 || (h != NULL && ! h->needs_plt
9631 && (! info->symbolic || ! h->def_regular))))
252b5132 9632 {
5e681ec4
PB
9633 struct elf32_arm_relocs_copied *p, **head;
9634
252b5132
RH
9635 /* When creating a shared object, we must copy these
9636 reloc types into the output file. We create a reloc
9637 section in dynobj and make room for this reloc. */
83bac4b0 9638 if (sreloc == NULL)
252b5132 9639 {
83bac4b0
NC
9640 sreloc = _bfd_elf_make_dynamic_reloc_section
9641 (sec, dynobj, 2, abfd, ! htab->use_rel);
252b5132 9642
83bac4b0 9643 if (sreloc == NULL)
b34976b6 9644 return FALSE;
252b5132 9645
83bac4b0
NC
9646 /* BPABI objects never have dynamic relocations mapped. */
9647 if (! htab->symbian_p)
252b5132 9648 {
83bac4b0 9649 flagword flags;
5e681ec4 9650
83bac4b0 9651 flags = bfd_get_section_flags (dynobj, sreloc);
528aeb62 9652 flags |= (SEC_LOAD | SEC_ALLOC);
83bac4b0
NC
9653 bfd_set_section_flags (dynobj, sreloc, flags);
9654 }
252b5132
RH
9655 }
9656
5e681ec4
PB
9657 /* If this is a global symbol, we count the number of
9658 relocations we need for this symbol. */
9659 if (h != NULL)
252b5132 9660 {
5e681ec4
PB
9661 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
9662 }
9663 else
9664 {
9665 /* Track dynamic relocs needed for local syms too.
9666 We really need local syms available to do this
9667 easily. Oh well. */
57e8b36a 9668
5e681ec4 9669 asection *s;
6edfbbad
DJ
9670 void *vpp;
9671
5e681ec4
PB
9672 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
9673 sec, r_symndx);
9674 if (s == NULL)
9675 return FALSE;
57e8b36a 9676
6edfbbad
DJ
9677 vpp = &elf_section_data (s)->local_dynrel;
9678 head = (struct elf32_arm_relocs_copied **) vpp;
5e681ec4 9679 }
57e8b36a 9680
5e681ec4
PB
9681 p = *head;
9682 if (p == NULL || p->section != sec)
9683 {
9684 bfd_size_type amt = sizeof *p;
57e8b36a 9685
5e681ec4 9686 p = bfd_alloc (htab->root.dynobj, amt);
252b5132 9687 if (p == NULL)
5e681ec4
PB
9688 return FALSE;
9689 p->next = *head;
9690 *head = p;
9691 p->section = sec;
9692 p->count = 0;
ba93b8ac 9693 p->pc_count = 0;
252b5132 9694 }
57e8b36a 9695
bb224fc3 9696 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
ba93b8ac 9697 p->pc_count += 1;
71a976dd 9698 p->count += 1;
252b5132
RH
9699 }
9700 break;
9701
9702 /* This relocation describes the C++ object vtable hierarchy.
9703 Reconstruct it for later use during GC. */
9704 case R_ARM_GNU_VTINHERIT:
c152c796 9705 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 9706 return FALSE;
252b5132 9707 break;
9a5aca8c 9708
252b5132
RH
9709 /* This relocation describes which C++ vtable entries are actually
9710 used. Record for later use during GC. */
9711 case R_ARM_GNU_VTENTRY:
d17e0c6e
JB
9712 BFD_ASSERT (h != NULL);
9713 if (h != NULL
9714 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 9715 return FALSE;
252b5132
RH
9716 break;
9717 }
9718 }
f21f3fe0 9719
b34976b6 9720 return TRUE;
252b5132
RH
9721}
9722
6a5bb875
PB
9723/* Unwinding tables are not referenced directly. This pass marks them as
9724 required if the corresponding code section is marked. */
9725
9726static bfd_boolean
906e58ca
NC
9727elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info,
9728 elf_gc_mark_hook_fn gc_mark_hook)
6a5bb875
PB
9729{
9730 bfd *sub;
9731 Elf_Internal_Shdr **elf_shdrp;
9732 bfd_boolean again;
9733
9734 /* Marking EH data may cause additional code sections to be marked,
9735 requiring multiple passes. */
9736 again = TRUE;
9737 while (again)
9738 {
9739 again = FALSE;
9740 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
9741 {
9742 asection *o;
9743
0ffa91dd 9744 if (! is_arm_elf (sub))
6a5bb875
PB
9745 continue;
9746
9747 elf_shdrp = elf_elfsections (sub);
9748 for (o = sub->sections; o != NULL; o = o->next)
9749 {
9750 Elf_Internal_Shdr *hdr;
0ffa91dd 9751
6a5bb875 9752 hdr = &elf_section_data (o)->this_hdr;
4fbb74a6
AM
9753 if (hdr->sh_type == SHT_ARM_EXIDX
9754 && hdr->sh_link
9755 && hdr->sh_link < elf_numsections (sub)
6a5bb875
PB
9756 && !o->gc_mark
9757 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
9758 {
9759 again = TRUE;
9760 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
9761 return FALSE;
9762 }
9763 }
9764 }
9765 }
9766
9767 return TRUE;
9768}
9769
3c9458e9
NC
9770/* Treat mapping symbols as special target symbols. */
9771
9772static bfd_boolean
9773elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
9774{
b0796911
PB
9775 return bfd_is_arm_special_symbol_name (sym->name,
9776 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
3c9458e9
NC
9777}
9778
0367ecfb
NC
9779/* This is a copy of elf_find_function() from elf.c except that
9780 ARM mapping symbols are ignored when looking for function names
9781 and STT_ARM_TFUNC is considered to a function type. */
252b5132 9782
0367ecfb
NC
9783static bfd_boolean
9784arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
9785 asection * section,
9786 asymbol ** symbols,
9787 bfd_vma offset,
9788 const char ** filename_ptr,
9789 const char ** functionname_ptr)
9790{
9791 const char * filename = NULL;
9792 asymbol * func = NULL;
9793 bfd_vma low_func = 0;
9794 asymbol ** p;
252b5132
RH
9795
9796 for (p = symbols; *p != NULL; p++)
9797 {
9798 elf_symbol_type *q;
9799
9800 q = (elf_symbol_type *) *p;
9801
252b5132
RH
9802 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
9803 {
9804 default:
9805 break;
9806 case STT_FILE:
9807 filename = bfd_asymbol_name (&q->symbol);
9808 break;
252b5132
RH
9809 case STT_FUNC:
9810 case STT_ARM_TFUNC:
9d2da7ca 9811 case STT_NOTYPE:
b0796911 9812 /* Skip mapping symbols. */
0367ecfb 9813 if ((q->symbol.flags & BSF_LOCAL)
b0796911
PB
9814 && bfd_is_arm_special_symbol_name (q->symbol.name,
9815 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
0367ecfb
NC
9816 continue;
9817 /* Fall through. */
6b40fcba 9818 if (bfd_get_section (&q->symbol) == section
252b5132
RH
9819 && q->symbol.value >= low_func
9820 && q->symbol.value <= offset)
9821 {
9822 func = (asymbol *) q;
9823 low_func = q->symbol.value;
9824 }
9825 break;
9826 }
9827 }
9828
9829 if (func == NULL)
b34976b6 9830 return FALSE;
252b5132 9831
0367ecfb
NC
9832 if (filename_ptr)
9833 *filename_ptr = filename;
9834 if (functionname_ptr)
9835 *functionname_ptr = bfd_asymbol_name (func);
9836
9837 return TRUE;
906e58ca 9838}
0367ecfb
NC
9839
9840
9841/* Find the nearest line to a particular section and offset, for error
9842 reporting. This code is a duplicate of the code in elf.c, except
9843 that it uses arm_elf_find_function. */
9844
9845static bfd_boolean
9846elf32_arm_find_nearest_line (bfd * abfd,
9847 asection * section,
9848 asymbol ** symbols,
9849 bfd_vma offset,
9850 const char ** filename_ptr,
9851 const char ** functionname_ptr,
9852 unsigned int * line_ptr)
9853{
9854 bfd_boolean found = FALSE;
9855
9856 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
9857
9858 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
9859 filename_ptr, functionname_ptr,
9860 line_ptr, 0,
9861 & elf_tdata (abfd)->dwarf2_find_line_info))
9862 {
9863 if (!*functionname_ptr)
9864 arm_elf_find_function (abfd, section, symbols, offset,
9865 *filename_ptr ? NULL : filename_ptr,
9866 functionname_ptr);
f21f3fe0 9867
0367ecfb
NC
9868 return TRUE;
9869 }
9870
9871 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
9872 & found, filename_ptr,
9873 functionname_ptr, line_ptr,
9874 & elf_tdata (abfd)->line_info))
9875 return FALSE;
9876
9877 if (found && (*functionname_ptr || *line_ptr))
9878 return TRUE;
9879
9880 if (symbols == NULL)
9881 return FALSE;
9882
9883 if (! arm_elf_find_function (abfd, section, symbols, offset,
9884 filename_ptr, functionname_ptr))
9885 return FALSE;
9886
9887 *line_ptr = 0;
b34976b6 9888 return TRUE;
252b5132
RH
9889}
9890
4ab527b0
FF
9891static bfd_boolean
9892elf32_arm_find_inliner_info (bfd * abfd,
9893 const char ** filename_ptr,
9894 const char ** functionname_ptr,
9895 unsigned int * line_ptr)
9896{
9897 bfd_boolean found;
9898 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
9899 functionname_ptr, line_ptr,
9900 & elf_tdata (abfd)->dwarf2_find_line_info);
9901 return found;
9902}
9903
252b5132
RH
9904/* Adjust a symbol defined by a dynamic object and referenced by a
9905 regular object. The current definition is in some section of the
9906 dynamic object, but we're not including those sections. We have to
9907 change the definition to something the rest of the link can
9908 understand. */
9909
b34976b6 9910static bfd_boolean
57e8b36a
NC
9911elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
9912 struct elf_link_hash_entry * h)
252b5132
RH
9913{
9914 bfd * dynobj;
9915 asection * s;
b7693d02 9916 struct elf32_arm_link_hash_entry * eh;
67687978 9917 struct elf32_arm_link_hash_table *globals;
252b5132 9918
67687978 9919 globals = elf32_arm_hash_table (info);
252b5132
RH
9920 dynobj = elf_hash_table (info)->dynobj;
9921
9922 /* Make sure we know what is going on here. */
9923 BFD_ASSERT (dynobj != NULL
f5385ebf 9924 && (h->needs_plt
f6e332e6 9925 || h->u.weakdef != NULL
f5385ebf
AM
9926 || (h->def_dynamic
9927 && h->ref_regular
9928 && !h->def_regular)));
252b5132 9929
b7693d02
DJ
9930 eh = (struct elf32_arm_link_hash_entry *) h;
9931
252b5132
RH
9932 /* If this is a function, put it in the procedure linkage table. We
9933 will fill in the contents of the procedure linkage table later,
9934 when we know the address of the .got section. */
0f88be7a 9935 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
f5385ebf 9936 || h->needs_plt)
252b5132 9937 {
5e681ec4
PB
9938 if (h->plt.refcount <= 0
9939 || SYMBOL_CALLS_LOCAL (info, h)
9940 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
9941 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH
9942 {
9943 /* This case can occur if we saw a PLT32 reloc in an input
5e681ec4
PB
9944 file, but the symbol was never referred to by a dynamic
9945 object, or if all references were garbage collected. In
9946 such a case, we don't actually need to build a procedure
9947 linkage table, and we can just do a PC24 reloc instead. */
9948 h->plt.offset = (bfd_vma) -1;
b7693d02 9949 eh->plt_thumb_refcount = 0;
bd97cb95 9950 eh->plt_maybe_thumb_refcount = 0;
f5385ebf 9951 h->needs_plt = 0;
252b5132
RH
9952 }
9953
b34976b6 9954 return TRUE;
252b5132 9955 }
5e681ec4 9956 else
b7693d02
DJ
9957 {
9958 /* It's possible that we incorrectly decided a .plt reloc was
9959 needed for an R_ARM_PC24 or similar reloc to a non-function sym
9960 in check_relocs. We can't decide accurately between function
9961 and non-function syms in check-relocs; Objects loaded later in
9962 the link may change h->type. So fix it now. */
9963 h->plt.offset = (bfd_vma) -1;
9964 eh->plt_thumb_refcount = 0;
bd97cb95 9965 eh->plt_maybe_thumb_refcount = 0;
b7693d02 9966 }
252b5132
RH
9967
9968 /* If this is a weak symbol, and there is a real definition, the
9969 processor independent code will have arranged for us to see the
9970 real definition first, and we can just use the same value. */
f6e332e6 9971 if (h->u.weakdef != NULL)
252b5132 9972 {
f6e332e6
AM
9973 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
9974 || h->u.weakdef->root.type == bfd_link_hash_defweak);
9975 h->root.u.def.section = h->u.weakdef->root.u.def.section;
9976 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 9977 return TRUE;
252b5132
RH
9978 }
9979
ba93b8ac
DJ
9980 /* If there are no non-GOT references, we do not need a copy
9981 relocation. */
9982 if (!h->non_got_ref)
9983 return TRUE;
9984
252b5132
RH
9985 /* This is a reference to a symbol defined by a dynamic object which
9986 is not a function. */
9987
9988 /* If we are creating a shared library, we must presume that the
9989 only references to the symbol are via the global offset table.
9990 For such cases we need not do anything here; the relocations will
67687978
PB
9991 be handled correctly by relocate_section. Relocatable executables
9992 can reference data in shared objects directly, so we don't need to
9993 do anything here. */
9994 if (info->shared || globals->root.is_relocatable_executable)
b34976b6 9995 return TRUE;
252b5132 9996
909272ee
AM
9997 if (h->size == 0)
9998 {
9999 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
10000 h->root.root.string);
10001 return TRUE;
10002 }
10003
252b5132
RH
10004 /* We must allocate the symbol in our .dynbss section, which will
10005 become part of the .bss section of the executable. There will be
10006 an entry for this symbol in the .dynsym section. The dynamic
10007 object will contain position independent code, so all references
10008 from the dynamic object to this symbol will go through the global
10009 offset table. The dynamic linker will use the .dynsym entry to
10010 determine the address it must put in the global offset table, so
10011 both the dynamic object and the regular object will refer to the
10012 same memory location for the variable. */
252b5132
RH
10013 s = bfd_get_section_by_name (dynobj, ".dynbss");
10014 BFD_ASSERT (s != NULL);
10015
10016 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
10017 copy the initial value out of the dynamic object and into the
10018 runtime process image. We need to remember the offset into the
00a97672 10019 .rel(a).bss section we are going to use. */
252b5132
RH
10020 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
10021 {
10022 asection *srel;
10023
00a97672 10024 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
252b5132 10025 BFD_ASSERT (srel != NULL);
00a97672 10026 srel->size += RELOC_SIZE (globals);
f5385ebf 10027 h->needs_copy = 1;
252b5132
RH
10028 }
10029
027297b7 10030 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH
10031}
10032
5e681ec4
PB
10033/* Allocate space in .plt, .got and associated reloc sections for
10034 dynamic relocs. */
10035
10036static bfd_boolean
57e8b36a 10037allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
5e681ec4
PB
10038{
10039 struct bfd_link_info *info;
10040 struct elf32_arm_link_hash_table *htab;
10041 struct elf32_arm_link_hash_entry *eh;
10042 struct elf32_arm_relocs_copied *p;
bd97cb95 10043 bfd_signed_vma thumb_refs;
5e681ec4 10044
b7693d02
DJ
10045 eh = (struct elf32_arm_link_hash_entry *) h;
10046
5e681ec4
PB
10047 if (h->root.type == bfd_link_hash_indirect)
10048 return TRUE;
10049
10050 if (h->root.type == bfd_link_hash_warning)
10051 /* When warning symbols are created, they **replace** the "real"
10052 entry in the hash table, thus we never get to see the real
10053 symbol in a hash traversal. So look at it now. */
10054 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10055
10056 info = (struct bfd_link_info *) inf;
10057 htab = elf32_arm_hash_table (info);
10058
10059 if (htab->root.dynamic_sections_created
10060 && h->plt.refcount > 0)
10061 {
10062 /* Make sure this symbol is output as a dynamic symbol.
10063 Undefined weak syms won't yet be marked as dynamic. */
10064 if (h->dynindx == -1
f5385ebf 10065 && !h->forced_local)
5e681ec4 10066 {
c152c796 10067 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB
10068 return FALSE;
10069 }
10070
10071 if (info->shared
7359ea65 10072 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
5e681ec4
PB
10073 {
10074 asection *s = htab->splt;
10075
10076 /* If this is the first .plt entry, make room for the special
10077 first entry. */
eea6121a 10078 if (s->size == 0)
e5a52504 10079 s->size += htab->plt_header_size;
5e681ec4 10080
eea6121a 10081 h->plt.offset = s->size;
5e681ec4 10082
b7693d02
DJ
10083 /* If we will insert a Thumb trampoline before this PLT, leave room
10084 for it. */
bd97cb95
DJ
10085 thumb_refs = eh->plt_thumb_refcount;
10086 if (!htab->use_blx)
10087 thumb_refs += eh->plt_maybe_thumb_refcount;
10088
10089 if (thumb_refs > 0)
b7693d02
DJ
10090 {
10091 h->plt.offset += PLT_THUMB_STUB_SIZE;
10092 s->size += PLT_THUMB_STUB_SIZE;
10093 }
10094
5e681ec4
PB
10095 /* If this symbol is not defined in a regular file, and we are
10096 not generating a shared library, then set the symbol to this
10097 location in the .plt. This is required to make function
10098 pointers compare as equal between the normal executable and
10099 the shared library. */
10100 if (! info->shared
f5385ebf 10101 && !h->def_regular)
5e681ec4
PB
10102 {
10103 h->root.u.def.section = s;
10104 h->root.u.def.value = h->plt.offset;
b7693d02
DJ
10105
10106 /* Make sure the function is not marked as Thumb, in case
10107 it is the target of an ABS32 relocation, which will
10108 point to the PLT entry. */
10109 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
10110 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
5e681ec4
PB
10111 }
10112
10113 /* Make room for this entry. */
e5a52504 10114 s->size += htab->plt_entry_size;
5e681ec4 10115
e5a52504 10116 if (!htab->symbian_p)
b7693d02
DJ
10117 {
10118 /* We also need to make an entry in the .got.plt section, which
10119 will be placed in the .got section by the linker script. */
10120 eh->plt_got_offset = htab->sgotplt->size;
10121 htab->sgotplt->size += 4;
10122 }
5e681ec4 10123
00a97672
RS
10124 /* We also need to make an entry in the .rel(a).plt section. */
10125 htab->srelplt->size += RELOC_SIZE (htab);
10126
10127 /* VxWorks executables have a second set of relocations for
10128 each PLT entry. They go in a separate relocation section,
10129 which is processed by the kernel loader. */
10130 if (htab->vxworks_p && !info->shared)
10131 {
10132 /* There is a relocation for the initial PLT entry:
10133 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
10134 if (h->plt.offset == htab->plt_header_size)
10135 htab->srelplt2->size += RELOC_SIZE (htab);
10136
10137 /* There are two extra relocations for each subsequent
10138 PLT entry: an R_ARM_32 relocation for the GOT entry,
10139 and an R_ARM_32 relocation for the PLT entry. */
10140 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
10141 }
5e681ec4
PB
10142 }
10143 else
10144 {
10145 h->plt.offset = (bfd_vma) -1;
f5385ebf 10146 h->needs_plt = 0;
5e681ec4
PB
10147 }
10148 }
10149 else
10150 {
10151 h->plt.offset = (bfd_vma) -1;
f5385ebf 10152 h->needs_plt = 0;
5e681ec4
PB
10153 }
10154
10155 if (h->got.refcount > 0)
10156 {
10157 asection *s;
10158 bfd_boolean dyn;
ba93b8ac
DJ
10159 int tls_type = elf32_arm_hash_entry (h)->tls_type;
10160 int indx;
5e681ec4
PB
10161
10162 /* Make sure this symbol is output as a dynamic symbol.
10163 Undefined weak syms won't yet be marked as dynamic. */
10164 if (h->dynindx == -1
f5385ebf 10165 && !h->forced_local)
5e681ec4 10166 {
c152c796 10167 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB
10168 return FALSE;
10169 }
10170
e5a52504
MM
10171 if (!htab->symbian_p)
10172 {
10173 s = htab->sgot;
10174 h->got.offset = s->size;
ba93b8ac
DJ
10175
10176 if (tls_type == GOT_UNKNOWN)
10177 abort ();
10178
10179 if (tls_type == GOT_NORMAL)
10180 /* Non-TLS symbols need one GOT slot. */
10181 s->size += 4;
10182 else
10183 {
10184 if (tls_type & GOT_TLS_GD)
10185 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
10186 s->size += 8;
10187 if (tls_type & GOT_TLS_IE)
10188 /* R_ARM_TLS_IE32 needs one GOT slot. */
10189 s->size += 4;
10190 }
10191
e5a52504 10192 dyn = htab->root.dynamic_sections_created;
ba93b8ac
DJ
10193
10194 indx = 0;
10195 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
10196 && (!info->shared
10197 || !SYMBOL_REFERENCES_LOCAL (info, h)))
10198 indx = h->dynindx;
10199
10200 if (tls_type != GOT_NORMAL
10201 && (info->shared || indx != 0)
10202 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
10203 || h->root.type != bfd_link_hash_undefweak))
10204 {
10205 if (tls_type & GOT_TLS_IE)
00a97672 10206 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ
10207
10208 if (tls_type & GOT_TLS_GD)
00a97672 10209 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ
10210
10211 if ((tls_type & GOT_TLS_GD) && indx != 0)
00a97672 10212 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ
10213 }
10214 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
10215 || h->root.type != bfd_link_hash_undefweak)
10216 && (info->shared
10217 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
00a97672 10218 htab->srelgot->size += RELOC_SIZE (htab);
e5a52504 10219 }
5e681ec4
PB
10220 }
10221 else
10222 h->got.offset = (bfd_vma) -1;
10223
a4fd1a8e
PB
10224 /* Allocate stubs for exported Thumb functions on v4t. */
10225 if (!htab->use_blx && h->dynindx != -1
0eaedd0e 10226 && h->def_regular
a4fd1a8e
PB
10227 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
10228 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
10229 {
10230 struct elf_link_hash_entry * th;
10231 struct bfd_link_hash_entry * bh;
10232 struct elf_link_hash_entry * myh;
10233 char name[1024];
10234 asection *s;
10235 bh = NULL;
10236 /* Create a new symbol to regist the real location of the function. */
10237 s = h->root.u.def.section;
906e58ca 10238 sprintf (name, "__real_%s", h->root.root.string);
a4fd1a8e
PB
10239 _bfd_generic_link_add_one_symbol (info, s->owner,
10240 name, BSF_GLOBAL, s,
10241 h->root.u.def.value,
10242 NULL, TRUE, FALSE, &bh);
10243
10244 myh = (struct elf_link_hash_entry *) bh;
10245 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
10246 myh->forced_local = 1;
10247 eh->export_glue = myh;
10248 th = record_arm_to_thumb_glue (info, h);
10249 /* Point the symbol at the stub. */
10250 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
10251 h->root.u.def.section = th->root.u.def.section;
10252 h->root.u.def.value = th->root.u.def.value & ~1;
10253 }
10254
5e681ec4
PB
10255 if (eh->relocs_copied == NULL)
10256 return TRUE;
10257
10258 /* In the shared -Bsymbolic case, discard space allocated for
10259 dynamic pc-relative relocs against symbols which turn out to be
10260 defined in regular objects. For the normal shared case, discard
10261 space for pc-relative relocs that have become local due to symbol
10262 visibility changes. */
10263
67687978 10264 if (info->shared || htab->root.is_relocatable_executable)
5e681ec4 10265 {
7bdca076 10266 /* The only relocs that use pc_count are R_ARM_REL32 and
bb224fc3
MS
10267 R_ARM_REL32_NOI, which will appear on something like
10268 ".long foo - .". We want calls to protected symbols to resolve
10269 directly to the function rather than going via the plt. If people
10270 want function pointer comparisons to work as expected then they
10271 should avoid writing assembly like ".long foo - .". */
ba93b8ac
DJ
10272 if (SYMBOL_CALLS_LOCAL (info, h))
10273 {
10274 struct elf32_arm_relocs_copied **pp;
10275
10276 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
10277 {
10278 p->count -= p->pc_count;
10279 p->pc_count = 0;
10280 if (p->count == 0)
10281 *pp = p->next;
10282 else
10283 pp = &p->next;
10284 }
10285 }
10286
3348747a
NS
10287 if (elf32_arm_hash_table (info)->vxworks_p)
10288 {
10289 struct elf32_arm_relocs_copied **pp;
10290
10291 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
10292 {
10293 if (strcmp (p->section->output_section->name, ".tls_vars") == 0)
10294 *pp = p->next;
10295 else
10296 pp = &p->next;
10297 }
10298 }
10299
ba93b8ac 10300 /* Also discard relocs on undefined weak syms with non-default
7359ea65 10301 visibility. */
22d606e9 10302 if (eh->relocs_copied != NULL
5e681ec4 10303 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM
10304 {
10305 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
10306 eh->relocs_copied = NULL;
10307
10308 /* Make sure undefined weak symbols are output as a dynamic
10309 symbol in PIEs. */
10310 else if (h->dynindx == -1
10311 && !h->forced_local)
10312 {
10313 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10314 return FALSE;
10315 }
10316 }
10317
67687978
PB
10318 else if (htab->root.is_relocatable_executable && h->dynindx == -1
10319 && h->root.type == bfd_link_hash_new)
10320 {
10321 /* Output absolute symbols so that we can create relocations
10322 against them. For normal symbols we output a relocation
10323 against the section that contains them. */
10324 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10325 return FALSE;
10326 }
10327
5e681ec4
PB
10328 }
10329 else
10330 {
10331 /* For the non-shared case, discard space for relocs against
10332 symbols which turn out to need copy relocs or are not
10333 dynamic. */
10334
f5385ebf
AM
10335 if (!h->non_got_ref
10336 && ((h->def_dynamic
10337 && !h->def_regular)
5e681ec4
PB
10338 || (htab->root.dynamic_sections_created
10339 && (h->root.type == bfd_link_hash_undefweak
10340 || h->root.type == bfd_link_hash_undefined))))
10341 {
10342 /* Make sure this symbol is output as a dynamic symbol.
10343 Undefined weak syms won't yet be marked as dynamic. */
10344 if (h->dynindx == -1
f5385ebf 10345 && !h->forced_local)
5e681ec4 10346 {
c152c796 10347 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB
10348 return FALSE;
10349 }
10350
10351 /* If that succeeded, we know we'll be keeping all the
10352 relocs. */
10353 if (h->dynindx != -1)
10354 goto keep;
10355 }
10356
10357 eh->relocs_copied = NULL;
10358
10359 keep: ;
10360 }
10361
10362 /* Finally, allocate space. */
10363 for (p = eh->relocs_copied; p != NULL; p = p->next)
10364 {
10365 asection *sreloc = elf_section_data (p->section)->sreloc;
00a97672 10366 sreloc->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB
10367 }
10368
10369 return TRUE;
10370}
10371
08d1f311
DJ
10372/* Find any dynamic relocs that apply to read-only sections. */
10373
10374static bfd_boolean
8029a119 10375elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
08d1f311 10376{
8029a119
NC
10377 struct elf32_arm_link_hash_entry * eh;
10378 struct elf32_arm_relocs_copied * p;
08d1f311
DJ
10379
10380 if (h->root.type == bfd_link_hash_warning)
10381 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10382
10383 eh = (struct elf32_arm_link_hash_entry *) h;
10384 for (p = eh->relocs_copied; p != NULL; p = p->next)
10385 {
10386 asection *s = p->section;
10387
10388 if (s != NULL && (s->flags & SEC_READONLY) != 0)
10389 {
10390 struct bfd_link_info *info = (struct bfd_link_info *) inf;
10391
10392 info->flags |= DF_TEXTREL;
10393
10394 /* Not an error, just cut short the traversal. */
10395 return FALSE;
10396 }
10397 }
10398 return TRUE;
10399}
10400
d504ffc8
DJ
10401void
10402bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
10403 int byteswap_code)
10404{
10405 struct elf32_arm_link_hash_table *globals;
10406
10407 globals = elf32_arm_hash_table (info);
10408 globals->byteswap_code = byteswap_code;
10409}
10410
252b5132
RH
10411/* Set the sizes of the dynamic sections. */
10412
b34976b6 10413static bfd_boolean
57e8b36a
NC
10414elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
10415 struct bfd_link_info * info)
252b5132
RH
10416{
10417 bfd * dynobj;
10418 asection * s;
b34976b6
AM
10419 bfd_boolean plt;
10420 bfd_boolean relocs;
5e681ec4
PB
10421 bfd *ibfd;
10422 struct elf32_arm_link_hash_table *htab;
252b5132 10423
5e681ec4 10424 htab = elf32_arm_hash_table (info);
252b5132
RH
10425 dynobj = elf_hash_table (info)->dynobj;
10426 BFD_ASSERT (dynobj != NULL);
39b41c9c 10427 check_use_blx (htab);
252b5132
RH
10428
10429 if (elf_hash_table (info)->dynamic_sections_created)
10430 {
10431 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 10432 if (info->executable)
252b5132
RH
10433 {
10434 s = bfd_get_section_by_name (dynobj, ".interp");
10435 BFD_ASSERT (s != NULL);
eea6121a 10436 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH
10437 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10438 }
10439 }
5e681ec4
PB
10440
10441 /* Set up .got offsets for local syms, and space for local dynamic
10442 relocs. */
10443 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 10444 {
5e681ec4
PB
10445 bfd_signed_vma *local_got;
10446 bfd_signed_vma *end_local_got;
10447 char *local_tls_type;
10448 bfd_size_type locsymcount;
10449 Elf_Internal_Shdr *symtab_hdr;
10450 asection *srel;
3348747a 10451 bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p;
5e681ec4 10452
0ffa91dd 10453 if (! is_arm_elf (ibfd))
5e681ec4
PB
10454 continue;
10455
10456 for (s = ibfd->sections; s != NULL; s = s->next)
10457 {
10458 struct elf32_arm_relocs_copied *p;
10459
6edfbbad 10460 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
5e681ec4
PB
10461 {
10462 if (!bfd_is_abs_section (p->section)
10463 && bfd_is_abs_section (p->section->output_section))
10464 {
10465 /* Input section has been discarded, either because
10466 it is a copy of a linkonce section or due to
10467 linker script /DISCARD/, so we'll be discarding
10468 the relocs too. */
10469 }
3348747a
NS
10470 else if (is_vxworks
10471 && strcmp (p->section->output_section->name,
10472 ".tls_vars") == 0)
10473 {
10474 /* Relocations in vxworks .tls_vars sections are
10475 handled specially by the loader. */
10476 }
5e681ec4
PB
10477 else if (p->count != 0)
10478 {
10479 srel = elf_section_data (p->section)->sreloc;
00a97672 10480 srel->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB
10481 if ((p->section->output_section->flags & SEC_READONLY) != 0)
10482 info->flags |= DF_TEXTREL;
10483 }
10484 }
10485 }
10486
10487 local_got = elf_local_got_refcounts (ibfd);
10488 if (!local_got)
10489 continue;
10490
0ffa91dd 10491 symtab_hdr = & elf_symtab_hdr (ibfd);
5e681ec4
PB
10492 locsymcount = symtab_hdr->sh_info;
10493 end_local_got = local_got + locsymcount;
ba93b8ac 10494 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
5e681ec4
PB
10495 s = htab->sgot;
10496 srel = htab->srelgot;
10497 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
10498 {
10499 if (*local_got > 0)
10500 {
eea6121a 10501 *local_got = s->size;
ba93b8ac
DJ
10502 if (*local_tls_type & GOT_TLS_GD)
10503 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10504 s->size += 8;
10505 if (*local_tls_type & GOT_TLS_IE)
10506 s->size += 4;
10507 if (*local_tls_type == GOT_NORMAL)
10508 s->size += 4;
10509
10510 if (info->shared || *local_tls_type == GOT_TLS_GD)
00a97672 10511 srel->size += RELOC_SIZE (htab);
5e681ec4
PB
10512 }
10513 else
10514 *local_got = (bfd_vma) -1;
10515 }
252b5132
RH
10516 }
10517
ba93b8ac
DJ
10518 if (htab->tls_ldm_got.refcount > 0)
10519 {
10520 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10521 for R_ARM_TLS_LDM32 relocations. */
10522 htab->tls_ldm_got.offset = htab->sgot->size;
10523 htab->sgot->size += 8;
10524 if (info->shared)
00a97672 10525 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ
10526 }
10527 else
10528 htab->tls_ldm_got.offset = -1;
10529
5e681ec4
PB
10530 /* Allocate global sym .plt and .got entries, and space for global
10531 sym dynamic relocs. */
57e8b36a 10532 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
252b5132 10533
d504ffc8
DJ
10534 /* Here we rummage through the found bfds to collect glue information. */
10535 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
c7b8f16e 10536 {
0ffa91dd 10537 if (! is_arm_elf (ibfd))
e44a2c9c
AM
10538 continue;
10539
c7b8f16e
JB
10540 /* Initialise mapping tables for code/data. */
10541 bfd_elf32_arm_init_maps (ibfd);
906e58ca 10542
c7b8f16e
JB
10543 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
10544 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
10545 /* xgettext:c-format */
10546 _bfd_error_handler (_("Errors encountered processing file %s"),
10547 ibfd->filename);
10548 }
d504ffc8 10549
252b5132
RH
10550 /* The check_relocs and adjust_dynamic_symbol entry points have
10551 determined the sizes of the various dynamic sections. Allocate
10552 memory for them. */
b34976b6
AM
10553 plt = FALSE;
10554 relocs = FALSE;
252b5132
RH
10555 for (s = dynobj->sections; s != NULL; s = s->next)
10556 {
10557 const char * name;
252b5132
RH
10558
10559 if ((s->flags & SEC_LINKER_CREATED) == 0)
10560 continue;
10561
10562 /* It's OK to base decisions on the section name, because none
10563 of the dynobj section names depend upon the input files. */
10564 name = bfd_get_section_name (dynobj, s);
10565
24a1ba0f 10566 if (strcmp (name, ".plt") == 0)
252b5132 10567 {
c456f082
AM
10568 /* Remember whether there is a PLT. */
10569 plt = s->size != 0;
252b5132 10570 }
0112cd26 10571 else if (CONST_STRNEQ (name, ".rel"))
252b5132 10572 {
c456f082 10573 if (s->size != 0)
252b5132 10574 {
252b5132 10575 /* Remember whether there are any reloc sections other
00a97672
RS
10576 than .rel(a).plt and .rela.plt.unloaded. */
10577 if (s != htab->srelplt && s != htab->srelplt2)
b34976b6 10578 relocs = TRUE;
252b5132
RH
10579
10580 /* We use the reloc_count field as a counter if we need
10581 to copy relocs into the output file. */
10582 s->reloc_count = 0;
10583 }
10584 }
0112cd26 10585 else if (! CONST_STRNEQ (name, ".got")
c456f082 10586 && strcmp (name, ".dynbss") != 0)
252b5132
RH
10587 {
10588 /* It's not one of our sections, so don't allocate space. */
10589 continue;
10590 }
10591
c456f082 10592 if (s->size == 0)
252b5132 10593 {
c456f082 10594 /* If we don't need this section, strip it from the
00a97672
RS
10595 output file. This is mostly to handle .rel(a).bss and
10596 .rel(a).plt. We must create both sections in
c456f082
AM
10597 create_dynamic_sections, because they must be created
10598 before the linker maps input sections to output
10599 sections. The linker does that before
10600 adjust_dynamic_symbol is called, and it is that
10601 function which decides whether anything needs to go
10602 into these sections. */
8423293d 10603 s->flags |= SEC_EXCLUDE;
252b5132
RH
10604 continue;
10605 }
10606
c456f082
AM
10607 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10608 continue;
10609
252b5132 10610 /* Allocate memory for the section contents. */
906e58ca 10611 s->contents = bfd_zalloc (dynobj, s->size);
c456f082 10612 if (s->contents == NULL)
b34976b6 10613 return FALSE;
252b5132
RH
10614 }
10615
10616 if (elf_hash_table (info)->dynamic_sections_created)
10617 {
10618 /* Add some entries to the .dynamic section. We fill in the
10619 values later, in elf32_arm_finish_dynamic_sections, but we
10620 must add the entries now so that we get the correct size for
10621 the .dynamic section. The DT_DEBUG entry is filled in by the
10622 dynamic linker and used by the debugger. */
dc810e39 10623#define add_dynamic_entry(TAG, VAL) \
5a580b3a 10624 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 10625
8532796c 10626 if (info->executable)
252b5132 10627 {
dc810e39 10628 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 10629 return FALSE;
252b5132
RH
10630 }
10631
10632 if (plt)
10633 {
dc810e39
AM
10634 if ( !add_dynamic_entry (DT_PLTGOT, 0)
10635 || !add_dynamic_entry (DT_PLTRELSZ, 0)
00a97672
RS
10636 || !add_dynamic_entry (DT_PLTREL,
10637 htab->use_rel ? DT_REL : DT_RELA)
dc810e39 10638 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 10639 return FALSE;
252b5132
RH
10640 }
10641
10642 if (relocs)
10643 {
00a97672
RS
10644 if (htab->use_rel)
10645 {
10646 if (!add_dynamic_entry (DT_REL, 0)
10647 || !add_dynamic_entry (DT_RELSZ, 0)
10648 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
10649 return FALSE;
10650 }
10651 else
10652 {
10653 if (!add_dynamic_entry (DT_RELA, 0)
10654 || !add_dynamic_entry (DT_RELASZ, 0)
10655 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
10656 return FALSE;
10657 }
252b5132
RH
10658 }
10659
08d1f311
DJ
10660 /* If any dynamic relocs apply to a read-only section,
10661 then we need a DT_TEXTREL entry. */
10662 if ((info->flags & DF_TEXTREL) == 0)
8029a119
NC
10663 elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs,
10664 info);
08d1f311 10665
99e4ae17 10666 if ((info->flags & DF_TEXTREL) != 0)
252b5132 10667 {
dc810e39 10668 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10669 return FALSE;
252b5132 10670 }
7a2b07ff
NS
10671 if (htab->vxworks_p
10672 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
10673 return FALSE;
252b5132 10674 }
8532796c 10675#undef add_dynamic_entry
252b5132 10676
b34976b6 10677 return TRUE;
252b5132
RH
10678}
10679
252b5132
RH
10680/* Finish up dynamic symbol handling. We set the contents of various
10681 dynamic sections here. */
10682
b34976b6 10683static bfd_boolean
906e58ca
NC
10684elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
10685 struct bfd_link_info * info,
10686 struct elf_link_hash_entry * h,
10687 Elf_Internal_Sym * sym)
252b5132
RH
10688{
10689 bfd * dynobj;
e5a52504 10690 struct elf32_arm_link_hash_table *htab;
b7693d02 10691 struct elf32_arm_link_hash_entry *eh;
252b5132
RH
10692
10693 dynobj = elf_hash_table (info)->dynobj;
e5a52504 10694 htab = elf32_arm_hash_table (info);
b7693d02 10695 eh = (struct elf32_arm_link_hash_entry *) h;
252b5132
RH
10696
10697 if (h->plt.offset != (bfd_vma) -1)
10698 {
10699 asection * splt;
252b5132 10700 asection * srel;
e5a52504 10701 bfd_byte *loc;
24a1ba0f 10702 bfd_vma plt_index;
947216bf 10703 Elf_Internal_Rela rel;
252b5132
RH
10704
10705 /* This symbol has an entry in the procedure linkage table. Set
10706 it up. */
10707
10708 BFD_ASSERT (h->dynindx != -1);
10709
10710 splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672 10711 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
e5a52504 10712 BFD_ASSERT (splt != NULL && srel != NULL);
252b5132 10713
e5a52504
MM
10714 /* Fill in the entry in the procedure linkage table. */
10715 if (htab->symbian_p)
10716 {
906e58ca 10717 put_arm_insn (htab, output_bfd,
52ab56c2
PB
10718 elf32_arm_symbian_plt_entry[0],
10719 splt->contents + h->plt.offset);
906e58ca 10720 bfd_put_32 (output_bfd,
52ab56c2
PB
10721 elf32_arm_symbian_plt_entry[1],
10722 splt->contents + h->plt.offset + 4);
906e58ca 10723
e5a52504 10724 /* Fill in the entry in the .rel.plt section. */
2a1b9a48
MM
10725 rel.r_offset = (splt->output_section->vma
10726 + splt->output_offset
52ab56c2 10727 + h->plt.offset + 4);
e5a52504 10728 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
b7693d02
DJ
10729
10730 /* Get the index in the procedure linkage table which
10731 corresponds to this symbol. This is the index of this symbol
10732 in all the symbols for which we are making plt entries. The
10733 first entry in the procedure linkage table is reserved. */
906e58ca 10734 plt_index = ((h->plt.offset - htab->plt_header_size)
b7693d02 10735 / htab->plt_entry_size);
e5a52504
MM
10736 }
10737 else
10738 {
00a97672 10739 bfd_vma got_offset, got_address, plt_address;
e5a52504
MM
10740 bfd_vma got_displacement;
10741 asection * sgot;
52ab56c2 10742 bfd_byte * ptr;
906e58ca 10743
e5a52504
MM
10744 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
10745 BFD_ASSERT (sgot != NULL);
10746
b7693d02
DJ
10747 /* Get the offset into the .got.plt table of the entry that
10748 corresponds to this function. */
10749 got_offset = eh->plt_got_offset;
10750
10751 /* Get the index in the procedure linkage table which
10752 corresponds to this symbol. This is the index of this symbol
10753 in all the symbols for which we are making plt entries. The
10754 first three entries in .got.plt are reserved; after that
10755 symbols appear in the same order as in .plt. */
10756 plt_index = (got_offset - 12) / 4;
e5a52504 10757
00a97672
RS
10758 /* Calculate the address of the GOT entry. */
10759 got_address = (sgot->output_section->vma
10760 + sgot->output_offset
10761 + got_offset);
5e681ec4 10762
00a97672
RS
10763 /* ...and the address of the PLT entry. */
10764 plt_address = (splt->output_section->vma
10765 + splt->output_offset
10766 + h->plt.offset);
5e681ec4 10767
52ab56c2 10768 ptr = htab->splt->contents + h->plt.offset;
00a97672
RS
10769 if (htab->vxworks_p && info->shared)
10770 {
10771 unsigned int i;
10772 bfd_vma val;
10773
52ab56c2 10774 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS
10775 {
10776 val = elf32_arm_vxworks_shared_plt_entry[i];
10777 if (i == 2)
10778 val |= got_address - sgot->output_section->vma;
10779 if (i == 5)
10780 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB
10781 if (i == 2 || i == 5)
10782 bfd_put_32 (output_bfd, val, ptr);
10783 else
10784 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS
10785 }
10786 }
10787 else if (htab->vxworks_p)
b7693d02 10788 {
00a97672
RS
10789 unsigned int i;
10790 bfd_vma val;
10791
d3753b85 10792 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS
10793 {
10794 val = elf32_arm_vxworks_exec_plt_entry[i];
10795 if (i == 2)
10796 val |= got_address;
10797 if (i == 4)
10798 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
10799 if (i == 5)
10800 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB
10801 if (i == 2 || i == 5)
10802 bfd_put_32 (output_bfd, val, ptr);
10803 else
10804 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS
10805 }
10806
10807 loc = (htab->srelplt2->contents
10808 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
10809
10810 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
10811 referencing the GOT for this PLT entry. */
10812 rel.r_offset = plt_address + 8;
10813 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10814 rel.r_addend = got_offset;
10815 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10816 loc += RELOC_SIZE (htab);
10817
10818 /* Create the R_ARM_ABS32 relocation referencing the
10819 beginning of the PLT for this GOT entry. */
10820 rel.r_offset = got_address;
10821 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
10822 rel.r_addend = 0;
10823 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
b7693d02 10824 }
00a97672
RS
10825 else
10826 {
bd97cb95 10827 bfd_signed_vma thumb_refs;
00a97672
RS
10828 /* Calculate the displacement between the PLT slot and the
10829 entry in the GOT. The eight-byte offset accounts for the
10830 value produced by adding to pc in the first instruction
10831 of the PLT stub. */
10832 got_displacement = got_address - (plt_address + 8);
b7693d02 10833
00a97672
RS
10834 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
10835
bd97cb95
DJ
10836 thumb_refs = eh->plt_thumb_refcount;
10837 if (!htab->use_blx)
10838 thumb_refs += eh->plt_maybe_thumb_refcount;
10839
10840 if (thumb_refs > 0)
00a97672 10841 {
52ab56c2
PB
10842 put_thumb_insn (htab, output_bfd,
10843 elf32_arm_plt_thumb_stub[0], ptr - 4);
10844 put_thumb_insn (htab, output_bfd,
10845 elf32_arm_plt_thumb_stub[1], ptr - 2);
00a97672
RS
10846 }
10847
52ab56c2
PB
10848 put_arm_insn (htab, output_bfd,
10849 elf32_arm_plt_entry[0]
10850 | ((got_displacement & 0x0ff00000) >> 20),
10851 ptr + 0);
10852 put_arm_insn (htab, output_bfd,
10853 elf32_arm_plt_entry[1]
10854 | ((got_displacement & 0x000ff000) >> 12),
10855 ptr+ 4);
10856 put_arm_insn (htab, output_bfd,
10857 elf32_arm_plt_entry[2]
10858 | (got_displacement & 0x00000fff),
10859 ptr + 8);
5e681ec4 10860#ifdef FOUR_WORD_PLT
52ab56c2 10861 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
5e681ec4 10862#endif
00a97672 10863 }
252b5132 10864
e5a52504
MM
10865 /* Fill in the entry in the global offset table. */
10866 bfd_put_32 (output_bfd,
10867 (splt->output_section->vma
10868 + splt->output_offset),
10869 sgot->contents + got_offset);
906e58ca 10870
00a97672
RS
10871 /* Fill in the entry in the .rel(a).plt section. */
10872 rel.r_addend = 0;
10873 rel.r_offset = got_address;
e5a52504
MM
10874 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
10875 }
57e8b36a 10876
00a97672
RS
10877 loc = srel->contents + plt_index * RELOC_SIZE (htab);
10878 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132 10879
f5385ebf 10880 if (!h->def_regular)
252b5132
RH
10881 {
10882 /* Mark the symbol as undefined, rather than as defined in
10883 the .plt section. Leave the value alone. */
10884 sym->st_shndx = SHN_UNDEF;
d982ba73
PB
10885 /* If the symbol is weak, we do need to clear the value.
10886 Otherwise, the PLT entry would provide a definition for
10887 the symbol even if the symbol wasn't defined anywhere,
10888 and so the symbol would never be NULL. */
f5385ebf 10889 if (!h->ref_regular_nonweak)
d982ba73 10890 sym->st_value = 0;
252b5132
RH
10891 }
10892 }
10893
ba93b8ac
DJ
10894 if (h->got.offset != (bfd_vma) -1
10895 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
10896 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
252b5132
RH
10897 {
10898 asection * sgot;
10899 asection * srel;
947216bf
AM
10900 Elf_Internal_Rela rel;
10901 bfd_byte *loc;
00a97672 10902 bfd_vma offset;
252b5132
RH
10903
10904 /* This symbol has an entry in the global offset table. Set it
10905 up. */
252b5132 10906 sgot = bfd_get_section_by_name (dynobj, ".got");
00a97672 10907 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
252b5132
RH
10908 BFD_ASSERT (sgot != NULL && srel != NULL);
10909
00a97672
RS
10910 offset = (h->got.offset & ~(bfd_vma) 1);
10911 rel.r_addend = 0;
252b5132
RH
10912 rel.r_offset = (sgot->output_section->vma
10913 + sgot->output_offset
00a97672 10914 + offset);
252b5132 10915
5e681ec4
PB
10916 /* If this is a static link, or it is a -Bsymbolic link and the
10917 symbol is defined locally or was forced to be local because
10918 of a version file, we just want to emit a RELATIVE reloc.
10919 The entry in the global offset table will already have been
10920 initialized in the relocate_section function. */
252b5132 10921 if (info->shared
5e681ec4
PB
10922 && SYMBOL_REFERENCES_LOCAL (info, h))
10923 {
906e58ca 10924 BFD_ASSERT ((h->got.offset & 1) != 0);
5e681ec4 10925 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
00a97672
RS
10926 if (!htab->use_rel)
10927 {
10928 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
10929 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
10930 }
5e681ec4 10931 }
252b5132
RH
10932 else
10933 {
906e58ca 10934 BFD_ASSERT ((h->got.offset & 1) == 0);
00a97672 10935 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
252b5132
RH
10936 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
10937 }
10938
00a97672
RS
10939 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
10940 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH
10941 }
10942
f5385ebf 10943 if (h->needs_copy)
252b5132
RH
10944 {
10945 asection * s;
947216bf
AM
10946 Elf_Internal_Rela rel;
10947 bfd_byte *loc;
252b5132
RH
10948
10949 /* This symbol needs a copy reloc. Set it up. */
252b5132
RH
10950 BFD_ASSERT (h->dynindx != -1
10951 && (h->root.type == bfd_link_hash_defined
10952 || h->root.type == bfd_link_hash_defweak));
10953
10954 s = bfd_get_section_by_name (h->root.u.def.section->owner,
00a97672 10955 RELOC_SECTION (htab, ".bss"));
252b5132
RH
10956 BFD_ASSERT (s != NULL);
10957
00a97672 10958 rel.r_addend = 0;
252b5132
RH
10959 rel.r_offset = (h->root.u.def.value
10960 + h->root.u.def.section->output_section->vma
10961 + h->root.u.def.section->output_offset);
10962 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
00a97672
RS
10963 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
10964 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH
10965 }
10966
00a97672
RS
10967 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
10968 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
10969 to the ".got" section. */
252b5132 10970 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
00a97672 10971 || (!htab->vxworks_p && h == htab->root.hgot))
252b5132
RH
10972 sym->st_shndx = SHN_ABS;
10973
b34976b6 10974 return TRUE;
252b5132
RH
10975}
10976
10977/* Finish up the dynamic sections. */
10978
b34976b6 10979static bfd_boolean
57e8b36a 10980elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
252b5132
RH
10981{
10982 bfd * dynobj;
10983 asection * sgot;
10984 asection * sdyn;
10985
10986 dynobj = elf_hash_table (info)->dynobj;
10987
10988 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
229fcec5 10989 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
252b5132
RH
10990 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10991
10992 if (elf_hash_table (info)->dynamic_sections_created)
10993 {
10994 asection *splt;
10995 Elf32_External_Dyn *dyncon, *dynconend;
229fcec5 10996 struct elf32_arm_link_hash_table *htab;
252b5132 10997
229fcec5 10998 htab = elf32_arm_hash_table (info);
252b5132 10999 splt = bfd_get_section_by_name (dynobj, ".plt");
24a1ba0f 11000 BFD_ASSERT (splt != NULL && sdyn != NULL);
252b5132
RH
11001
11002 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 11003 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9b485d32 11004
252b5132
RH
11005 for (; dyncon < dynconend; dyncon++)
11006 {
11007 Elf_Internal_Dyn dyn;
11008 const char * name;
11009 asection * s;
11010
11011 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
11012
11013 switch (dyn.d_tag)
11014 {
229fcec5
MM
11015 unsigned int type;
11016
252b5132 11017 default:
7a2b07ff
NS
11018 if (htab->vxworks_p
11019 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
11020 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH
11021 break;
11022
229fcec5
MM
11023 case DT_HASH:
11024 name = ".hash";
11025 goto get_vma_if_bpabi;
11026 case DT_STRTAB:
11027 name = ".dynstr";
11028 goto get_vma_if_bpabi;
11029 case DT_SYMTAB:
11030 name = ".dynsym";
11031 goto get_vma_if_bpabi;
c0042f5d
MM
11032 case DT_VERSYM:
11033 name = ".gnu.version";
11034 goto get_vma_if_bpabi;
11035 case DT_VERDEF:
11036 name = ".gnu.version_d";
11037 goto get_vma_if_bpabi;
11038 case DT_VERNEED:
11039 name = ".gnu.version_r";
11040 goto get_vma_if_bpabi;
11041
252b5132
RH
11042 case DT_PLTGOT:
11043 name = ".got";
11044 goto get_vma;
11045 case DT_JMPREL:
00a97672 11046 name = RELOC_SECTION (htab, ".plt");
252b5132
RH
11047 get_vma:
11048 s = bfd_get_section_by_name (output_bfd, name);
11049 BFD_ASSERT (s != NULL);
229fcec5
MM
11050 if (!htab->symbian_p)
11051 dyn.d_un.d_ptr = s->vma;
11052 else
11053 /* In the BPABI, tags in the PT_DYNAMIC section point
11054 at the file offset, not the memory address, for the
11055 convenience of the post linker. */
11056 dyn.d_un.d_ptr = s->filepos;
252b5132
RH
11057 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11058 break;
11059
229fcec5
MM
11060 get_vma_if_bpabi:
11061 if (htab->symbian_p)
11062 goto get_vma;
11063 break;
11064
252b5132 11065 case DT_PLTRELSZ:
00a97672
RS
11066 s = bfd_get_section_by_name (output_bfd,
11067 RELOC_SECTION (htab, ".plt"));
252b5132 11068 BFD_ASSERT (s != NULL);
eea6121a 11069 dyn.d_un.d_val = s->size;
252b5132
RH
11070 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11071 break;
906e58ca 11072
252b5132 11073 case DT_RELSZ:
00a97672 11074 case DT_RELASZ:
229fcec5
MM
11075 if (!htab->symbian_p)
11076 {
11077 /* My reading of the SVR4 ABI indicates that the
11078 procedure linkage table relocs (DT_JMPREL) should be
11079 included in the overall relocs (DT_REL). This is
11080 what Solaris does. However, UnixWare can not handle
11081 that case. Therefore, we override the DT_RELSZ entry
11082 here to make it not include the JMPREL relocs. Since
00a97672 11083 the linker script arranges for .rel(a).plt to follow all
229fcec5
MM
11084 other relocation sections, we don't have to worry
11085 about changing the DT_REL entry. */
00a97672
RS
11086 s = bfd_get_section_by_name (output_bfd,
11087 RELOC_SECTION (htab, ".plt"));
229fcec5
MM
11088 if (s != NULL)
11089 dyn.d_un.d_val -= s->size;
11090 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11091 break;
11092 }
8029a119 11093 /* Fall through. */
229fcec5
MM
11094
11095 case DT_REL:
11096 case DT_RELA:
229fcec5
MM
11097 /* In the BPABI, the DT_REL tag must point at the file
11098 offset, not the VMA, of the first relocation
11099 section. So, we use code similar to that in
11100 elflink.c, but do not check for SHF_ALLOC on the
11101 relcoation section, since relocations sections are
11102 never allocated under the BPABI. The comments above
11103 about Unixware notwithstanding, we include all of the
11104 relocations here. */
11105 if (htab->symbian_p)
11106 {
11107 unsigned int i;
11108 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
11109 ? SHT_REL : SHT_RELA);
11110 dyn.d_un.d_val = 0;
11111 for (i = 1; i < elf_numsections (output_bfd); i++)
11112 {
906e58ca 11113 Elf_Internal_Shdr *hdr
229fcec5
MM
11114 = elf_elfsections (output_bfd)[i];
11115 if (hdr->sh_type == type)
11116 {
906e58ca 11117 if (dyn.d_tag == DT_RELSZ
229fcec5
MM
11118 || dyn.d_tag == DT_RELASZ)
11119 dyn.d_un.d_val += hdr->sh_size;
de52dba4
AM
11120 else if ((ufile_ptr) hdr->sh_offset
11121 <= dyn.d_un.d_val - 1)
229fcec5
MM
11122 dyn.d_un.d_val = hdr->sh_offset;
11123 }
11124 }
11125 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11126 }
252b5132 11127 break;
88f7bcd5
NC
11128
11129 /* Set the bottom bit of DT_INIT/FINI if the
11130 corresponding function is Thumb. */
11131 case DT_INIT:
11132 name = info->init_function;
11133 goto get_sym;
11134 case DT_FINI:
11135 name = info->fini_function;
11136 get_sym:
11137 /* If it wasn't set by elf_bfd_final_link
4cc11e76 11138 then there is nothing to adjust. */
88f7bcd5
NC
11139 if (dyn.d_un.d_val != 0)
11140 {
11141 struct elf_link_hash_entry * eh;
11142
11143 eh = elf_link_hash_lookup (elf_hash_table (info), name,
b34976b6 11144 FALSE, FALSE, TRUE);
906e58ca 11145 if (eh != NULL
88f7bcd5
NC
11146 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
11147 {
11148 dyn.d_un.d_val |= 1;
b34976b6 11149 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
88f7bcd5
NC
11150 }
11151 }
11152 break;
252b5132
RH
11153 }
11154 }
11155
24a1ba0f 11156 /* Fill in the first entry in the procedure linkage table. */
e5a52504 11157 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
f7a74f8c 11158 {
00a97672
RS
11159 const bfd_vma *plt0_entry;
11160 bfd_vma got_address, plt_address, got_displacement;
11161
11162 /* Calculate the addresses of the GOT and PLT. */
11163 got_address = sgot->output_section->vma + sgot->output_offset;
11164 plt_address = splt->output_section->vma + splt->output_offset;
11165
11166 if (htab->vxworks_p)
11167 {
11168 /* The VxWorks GOT is relocated by the dynamic linker.
11169 Therefore, we must emit relocations rather than simply
11170 computing the values now. */
11171 Elf_Internal_Rela rel;
11172
11173 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
52ab56c2
PB
11174 put_arm_insn (htab, output_bfd, plt0_entry[0],
11175 splt->contents + 0);
11176 put_arm_insn (htab, output_bfd, plt0_entry[1],
11177 splt->contents + 4);
11178 put_arm_insn (htab, output_bfd, plt0_entry[2],
11179 splt->contents + 8);
00a97672
RS
11180 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
11181
8029a119 11182 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
00a97672
RS
11183 rel.r_offset = plt_address + 12;
11184 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
11185 rel.r_addend = 0;
11186 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
11187 htab->srelplt2->contents);
11188 }
11189 else
11190 {
11191 got_displacement = got_address - (plt_address + 16);
11192
11193 plt0_entry = elf32_arm_plt0_entry;
52ab56c2
PB
11194 put_arm_insn (htab, output_bfd, plt0_entry[0],
11195 splt->contents + 0);
11196 put_arm_insn (htab, output_bfd, plt0_entry[1],
11197 splt->contents + 4);
11198 put_arm_insn (htab, output_bfd, plt0_entry[2],
11199 splt->contents + 8);
11200 put_arm_insn (htab, output_bfd, plt0_entry[3],
11201 splt->contents + 12);
5e681ec4 11202
5e681ec4 11203#ifdef FOUR_WORD_PLT
00a97672
RS
11204 /* The displacement value goes in the otherwise-unused
11205 last word of the second entry. */
11206 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
5e681ec4 11207#else
00a97672 11208 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
5e681ec4 11209#endif
00a97672 11210 }
f7a74f8c 11211 }
252b5132
RH
11212
11213 /* UnixWare sets the entsize of .plt to 4, although that doesn't
11214 really seem like the right value. */
74541ad4
AM
11215 if (splt->output_section->owner == output_bfd)
11216 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
00a97672
RS
11217
11218 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
11219 {
11220 /* Correct the .rel(a).plt.unloaded relocations. They will have
11221 incorrect symbol indexes. */
11222 int num_plts;
eed62c48 11223 unsigned char *p;
00a97672
RS
11224
11225 num_plts = ((htab->splt->size - htab->plt_header_size)
11226 / htab->plt_entry_size);
11227 p = htab->srelplt2->contents + RELOC_SIZE (htab);
11228
11229 for (; num_plts; num_plts--)
11230 {
11231 Elf_Internal_Rela rel;
11232
11233 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
11234 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
11235 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
11236 p += RELOC_SIZE (htab);
11237
11238 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
11239 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
11240 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
11241 p += RELOC_SIZE (htab);
11242 }
11243 }
252b5132
RH
11244 }
11245
11246 /* Fill in the first three entries in the global offset table. */
229fcec5 11247 if (sgot)
252b5132 11248 {
229fcec5
MM
11249 if (sgot->size > 0)
11250 {
11251 if (sdyn == NULL)
11252 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
11253 else
11254 bfd_put_32 (output_bfd,
11255 sdyn->output_section->vma + sdyn->output_offset,
11256 sgot->contents);
11257 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
11258 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
11259 }
252b5132 11260
229fcec5
MM
11261 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
11262 }
252b5132 11263
b34976b6 11264 return TRUE;
252b5132
RH
11265}
11266
ba96a88f 11267static void
57e8b36a 11268elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
ba96a88f 11269{
9b485d32 11270 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
e489d0ae 11271 struct elf32_arm_link_hash_table *globals;
ba96a88f
NC
11272
11273 i_ehdrp = elf_elfheader (abfd);
11274
94a3258f
PB
11275 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
11276 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
11277 else
11278 i_ehdrp->e_ident[EI_OSABI] = 0;
ba96a88f 11279 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
e489d0ae 11280
93204d3a
PB
11281 if (link_info)
11282 {
11283 globals = elf32_arm_hash_table (link_info);
11284 if (globals->byteswap_code)
11285 i_ehdrp->e_flags |= EF_ARM_BE8;
11286 }
ba96a88f
NC
11287}
11288
99e4ae17 11289static enum elf_reloc_type_class
57e8b36a 11290elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
99e4ae17 11291{
f51e552e 11292 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ
11293 {
11294 case R_ARM_RELATIVE:
11295 return reloc_class_relative;
11296 case R_ARM_JUMP_SLOT:
11297 return reloc_class_plt;
11298 case R_ARM_COPY:
11299 return reloc_class_copy;
11300 default:
11301 return reloc_class_normal;
11302 }
11303}
11304
e16bb312
NC
11305/* Set the right machine number for an Arm ELF file. */
11306
11307static bfd_boolean
57e8b36a 11308elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
e16bb312
NC
11309{
11310 if (hdr->sh_type == SHT_NOTE)
11311 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
11312
11313 return TRUE;
11314}
11315
e489d0ae 11316static void
57e8b36a 11317elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
e16bb312 11318{
5a6c6817 11319 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
e16bb312
NC
11320}
11321
40a18ebd
NC
11322/* Return TRUE if this is an unwinding table entry. */
11323
11324static bfd_boolean
11325is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
11326{
0112cd26
NC
11327 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
11328 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
40a18ebd
NC
11329}
11330
11331
11332/* Set the type and flags for an ARM section. We do this by
11333 the section name, which is a hack, but ought to work. */
11334
11335static bfd_boolean
11336elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
11337{
11338 const char * name;
11339
11340 name = bfd_get_section_name (abfd, sec);
11341
11342 if (is_arm_elf_unwind_section_name (abfd, name))
11343 {
11344 hdr->sh_type = SHT_ARM_EXIDX;
11345 hdr->sh_flags |= SHF_LINK_ORDER;
11346 }
11347 return TRUE;
11348}
11349
6dc132d9
L
11350/* Handle an ARM specific section when reading an object file. This is
11351 called when bfd_section_from_shdr finds a section with an unknown
11352 type. */
40a18ebd
NC
11353
11354static bfd_boolean
11355elf32_arm_section_from_shdr (bfd *abfd,
11356 Elf_Internal_Shdr * hdr,
6dc132d9
L
11357 const char *name,
11358 int shindex)
40a18ebd
NC
11359{
11360 /* There ought to be a place to keep ELF backend specific flags, but
11361 at the moment there isn't one. We just keep track of the
11362 sections by their name, instead. Fortunately, the ABI gives
11363 names for all the ARM specific sections, so we will probably get
11364 away with this. */
11365 switch (hdr->sh_type)
11366 {
11367 case SHT_ARM_EXIDX:
0951f019
RE
11368 case SHT_ARM_PREEMPTMAP:
11369 case SHT_ARM_ATTRIBUTES:
40a18ebd
NC
11370 break;
11371
11372 default:
11373 return FALSE;
11374 }
11375
6dc132d9 11376 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
40a18ebd
NC
11377 return FALSE;
11378
11379 return TRUE;
11380}
e489d0ae 11381
8e3de13a
NC
11382/* A structure used to record a list of sections, independently
11383 of the next and prev fields in the asection structure. */
11384typedef struct section_list
11385{
11386 asection * sec;
11387 struct section_list * next;
11388 struct section_list * prev;
11389}
11390section_list;
11391
11392/* Unfortunately we need to keep a list of sections for which
11393 an _arm_elf_section_data structure has been allocated. This
11394 is because it is possible for functions like elf32_arm_write_section
11395 to be called on a section which has had an elf_data_structure
11396 allocated for it (and so the used_by_bfd field is valid) but
11397 for which the ARM extended version of this structure - the
11398 _arm_elf_section_data structure - has not been allocated. */
11399static section_list * sections_with_arm_elf_section_data = NULL;
11400
11401static void
957c6e41 11402record_section_with_arm_elf_section_data (asection * sec)
8e3de13a
NC
11403{
11404 struct section_list * entry;
11405
957c6e41 11406 entry = bfd_malloc (sizeof (* entry));
8e3de13a
NC
11407 if (entry == NULL)
11408 return;
11409 entry->sec = sec;
11410 entry->next = sections_with_arm_elf_section_data;
11411 entry->prev = NULL;
11412 if (entry->next != NULL)
11413 entry->next->prev = entry;
11414 sections_with_arm_elf_section_data = entry;
11415}
11416
44444f50
NC
11417static struct section_list *
11418find_arm_elf_section_entry (asection * sec)
8e3de13a
NC
11419{
11420 struct section_list * entry;
bd4aae00 11421 static struct section_list * last_entry = NULL;
8e3de13a 11422
bd4aae00
NC
11423 /* This is a short cut for the typical case where the sections are added
11424 to the sections_with_arm_elf_section_data list in forward order and
11425 then looked up here in backwards order. This makes a real difference
11426 to the ld-srec/sec64k.exp linker test. */
44444f50 11427 entry = sections_with_arm_elf_section_data;
bd4aae00
NC
11428 if (last_entry != NULL)
11429 {
11430 if (last_entry->sec == sec)
44444f50
NC
11431 entry = last_entry;
11432 else if (last_entry->next != NULL
11433 && last_entry->next->sec == sec)
11434 entry = last_entry->next;
bd4aae00 11435 }
44444f50
NC
11436
11437 for (; entry; entry = entry->next)
8e3de13a 11438 if (entry->sec == sec)
44444f50 11439 break;
bd4aae00 11440
44444f50
NC
11441 if (entry)
11442 /* Record the entry prior to this one - it is the entry we are most
11443 likely to want to locate next time. Also this way if we have been
11444 called from unrecord_section_with_arm_elf_section_data() we will not
11445 be caching a pointer that is about to be freed. */
11446 last_entry = entry->prev;
11447
11448 return entry;
11449}
11450
11451static _arm_elf_section_data *
11452get_arm_elf_section_data (asection * sec)
11453{
11454 struct section_list * entry;
11455
11456 entry = find_arm_elf_section_entry (sec);
11457
11458 if (entry)
11459 return elf32_arm_section_data (entry->sec);
11460 else
11461 return NULL;
8e3de13a
NC
11462}
11463
11464static void
11465unrecord_section_with_arm_elf_section_data (asection * sec)
11466{
11467 struct section_list * entry;
11468
44444f50
NC
11469 entry = find_arm_elf_section_entry (sec);
11470
11471 if (entry)
11472 {
11473 if (entry->prev != NULL)
11474 entry->prev->next = entry->next;
11475 if (entry->next != NULL)
11476 entry->next->prev = entry->prev;
11477 if (entry == sections_with_arm_elf_section_data)
11478 sections_with_arm_elf_section_data = entry->next;
11479 free (entry);
11480 }
8e3de13a
NC
11481}
11482
e489d0ae 11483
4e617b1e
PB
11484typedef struct
11485{
11486 void *finfo;
11487 struct bfd_link_info *info;
91a5743d
PB
11488 asection *sec;
11489 int sec_shndx;
4e617b1e
PB
11490 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
11491 asection *, struct elf_link_hash_entry *);
11492} output_arch_syminfo;
11493
11494enum map_symbol_type
11495{
11496 ARM_MAP_ARM,
11497 ARM_MAP_THUMB,
11498 ARM_MAP_DATA
11499};
11500
11501
7413f23f 11502/* Output a single mapping symbol. */
4e617b1e
PB
11503
11504static bfd_boolean
7413f23f
DJ
11505elf32_arm_output_map_sym (output_arch_syminfo *osi,
11506 enum map_symbol_type type,
11507 bfd_vma offset)
4e617b1e
PB
11508{
11509 static const char *names[3] = {"$a", "$t", "$d"};
11510 struct elf32_arm_link_hash_table *htab;
11511 Elf_Internal_Sym sym;
11512
11513 htab = elf32_arm_hash_table (osi->info);
91a5743d
PB
11514 sym.st_value = osi->sec->output_section->vma
11515 + osi->sec->output_offset
11516 + offset;
4e617b1e
PB
11517 sym.st_size = 0;
11518 sym.st_other = 0;
11519 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
91a5743d
PB
11520 sym.st_shndx = osi->sec_shndx;
11521 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
4e617b1e
PB
11522 return FALSE;
11523 return TRUE;
11524}
11525
11526
11527/* Output mapping symbols for PLT entries associated with H. */
11528
11529static bfd_boolean
11530elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
11531{
11532 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
11533 struct elf32_arm_link_hash_table *htab;
11534 struct elf32_arm_link_hash_entry *eh;
11535 bfd_vma addr;
11536
11537 htab = elf32_arm_hash_table (osi->info);
11538
11539 if (h->root.type == bfd_link_hash_indirect)
11540 return TRUE;
11541
11542 if (h->root.type == bfd_link_hash_warning)
11543 /* When warning symbols are created, they **replace** the "real"
11544 entry in the hash table, thus we never get to see the real
11545 symbol in a hash traversal. So look at it now. */
11546 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11547
11548 if (h->plt.offset == (bfd_vma) -1)
11549 return TRUE;
11550
11551 eh = (struct elf32_arm_link_hash_entry *) h;
11552 addr = h->plt.offset;
11553 if (htab->symbian_p)
11554 {
7413f23f 11555 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11556 return FALSE;
7413f23f 11557 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
4e617b1e
PB
11558 return FALSE;
11559 }
11560 else if (htab->vxworks_p)
11561 {
7413f23f 11562 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11563 return FALSE;
7413f23f 11564 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
4e617b1e 11565 return FALSE;
7413f23f 11566 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12))
4e617b1e 11567 return FALSE;
7413f23f 11568 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20))
4e617b1e
PB
11569 return FALSE;
11570 }
11571 else
11572 {
bd97cb95
DJ
11573 bfd_signed_vma thumb_refs;
11574
11575 thumb_refs = eh->plt_thumb_refcount;
11576 if (!htab->use_blx)
11577 thumb_refs += eh->plt_maybe_thumb_refcount;
4e617b1e 11578
bd97cb95 11579 if (thumb_refs > 0)
4e617b1e 11580 {
7413f23f 11581 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4))
4e617b1e
PB
11582 return FALSE;
11583 }
11584#ifdef FOUR_WORD_PLT
7413f23f 11585 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11586 return FALSE;
7413f23f 11587 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
4e617b1e
PB
11588 return FALSE;
11589#else
906e58ca 11590 /* A three-word PLT with no Thumb thunk contains only Arm code,
4e617b1e
PB
11591 so only need to output a mapping symbol for the first PLT entry and
11592 entries with thumb thunks. */
bd97cb95 11593 if (thumb_refs > 0 || addr == 20)
4e617b1e 11594 {
7413f23f 11595 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e
PB
11596 return FALSE;
11597 }
11598#endif
11599 }
11600
11601 return TRUE;
11602}
11603
7413f23f
DJ
11604/* Output a single local symbol for a generated stub. */
11605
11606static bfd_boolean
11607elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name,
11608 bfd_vma offset, bfd_vma size)
11609{
11610 struct elf32_arm_link_hash_table *htab;
11611 Elf_Internal_Sym sym;
11612
11613 htab = elf32_arm_hash_table (osi->info);
11614 sym.st_value = osi->sec->output_section->vma
11615 + osi->sec->output_offset
11616 + offset;
11617 sym.st_size = size;
11618 sym.st_other = 0;
11619 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
11620 sym.st_shndx = osi->sec_shndx;
11621 if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL))
11622 return FALSE;
11623 return TRUE;
11624}
4e617b1e 11625
da5938a2 11626static bfd_boolean
8029a119
NC
11627arm_map_one_stub (struct bfd_hash_entry * gen_entry,
11628 void * in_arg)
da5938a2
NC
11629{
11630 struct elf32_arm_stub_hash_entry *stub_entry;
11631 struct bfd_link_info *info;
11632 struct elf32_arm_link_hash_table *htab;
11633 asection *stub_sec;
11634 bfd_vma addr;
7413f23f 11635 char *stub_name;
9a008db3 11636 output_arch_syminfo *osi;
da5938a2
NC
11637
11638 /* Massage our args to the form they really have. */
11639 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
9a008db3 11640 osi = (output_arch_syminfo *) in_arg;
da5938a2 11641
da5938a2
NC
11642 info = osi->info;
11643
11644 htab = elf32_arm_hash_table (info);
11645 stub_sec = stub_entry->stub_sec;
11646
11647 /* Ensure this stub is attached to the current section being
7413f23f 11648 processed. */
da5938a2
NC
11649 if (stub_sec != osi->sec)
11650 return TRUE;
11651
7413f23f
DJ
11652 addr = (bfd_vma) stub_entry->stub_offset;
11653 stub_name = stub_entry->output_name;
da5938a2 11654
7413f23f
DJ
11655 switch (stub_entry->stub_type)
11656 {
da5938a2 11657 case arm_stub_long_branch:
7413f23f 11658 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 8))
da5938a2 11659 return FALSE;
7413f23f
DJ
11660 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11661 return FALSE;
11662 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
da5938a2
NC
11663 return FALSE;
11664 break;
11665 case arm_thumb_v4t_stub_long_branch:
7413f23f
DJ
11666 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 12))
11667 return FALSE;
11668 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
da5938a2 11669 return FALSE;
7413f23f 11670 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
da5938a2
NC
11671 return FALSE;
11672 break;
11673 case arm_thumb_thumb_stub_long_branch:
3dccd7b7 11674 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 16))
da5938a2 11675 return FALSE;
7413f23f
DJ
11676 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr))
11677 return FALSE;
11678 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
da5938a2
NC
11679 return FALSE;
11680 break;
11681 case arm_thumb_arm_v4t_stub_long_branch:
3dccd7b7 11682 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 20))
7413f23f
DJ
11683 return FALSE;
11684 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr))
da5938a2 11685 return FALSE;
7413f23f 11686 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 8))
da5938a2 11687 return FALSE;
7413f23f 11688 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 16))
da5938a2
NC
11689 return FALSE;
11690 break;
c820be07
NC
11691 case arm_thumb_arm_v4t_stub_short_branch:
11692 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 8))
11693 return FALSE;
11694 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 4))
11695 return FALSE;
11696 break;
da5938a2 11697 case arm_stub_pic_long_branch:
7413f23f
DJ
11698 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 12))
11699 return FALSE;
11700 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
da5938a2 11701 return FALSE;
7413f23f 11702 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
da5938a2
NC
11703 return FALSE;
11704 break;
11705 default:
11706 BFD_FAIL ();
7413f23f 11707 }
da5938a2
NC
11708
11709 return TRUE;
11710}
11711
91a5743d 11712/* Output mapping symbols for linker generated sections. */
4e617b1e
PB
11713
11714static bfd_boolean
11715elf32_arm_output_arch_local_syms (bfd *output_bfd,
906e58ca
NC
11716 struct bfd_link_info *info,
11717 void *finfo,
11718 bfd_boolean (*func) (void *, const char *,
11719 Elf_Internal_Sym *,
11720 asection *,
11721 struct elf_link_hash_entry *))
4e617b1e
PB
11722{
11723 output_arch_syminfo osi;
11724 struct elf32_arm_link_hash_table *htab;
91a5743d
PB
11725 bfd_vma offset;
11726 bfd_size_type size;
4e617b1e
PB
11727
11728 htab = elf32_arm_hash_table (info);
906e58ca 11729 check_use_blx (htab);
91a5743d 11730
4e617b1e
PB
11731 osi.finfo = finfo;
11732 osi.info = info;
11733 osi.func = func;
906e58ca 11734
91a5743d
PB
11735 /* ARM->Thumb glue. */
11736 if (htab->arm_glue_size > 0)
11737 {
11738 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11739 ARM2THUMB_GLUE_SECTION_NAME);
11740
11741 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11742 (output_bfd, osi.sec->output_section);
11743 if (info->shared || htab->root.is_relocatable_executable
11744 || htab->pic_veneer)
11745 size = ARM2THUMB_PIC_GLUE_SIZE;
11746 else if (htab->use_blx)
11747 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
11748 else
11749 size = ARM2THUMB_STATIC_GLUE_SIZE;
4e617b1e 11750
91a5743d
PB
11751 for (offset = 0; offset < htab->arm_glue_size; offset += size)
11752 {
7413f23f
DJ
11753 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset);
11754 elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
91a5743d
PB
11755 }
11756 }
11757
11758 /* Thumb->ARM glue. */
11759 if (htab->thumb_glue_size > 0)
11760 {
11761 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11762 THUMB2ARM_GLUE_SECTION_NAME);
11763
11764 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11765 (output_bfd, osi.sec->output_section);
11766 size = THUMB2ARM_GLUE_SIZE;
11767
11768 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
11769 {
7413f23f
DJ
11770 elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset);
11771 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4);
91a5743d
PB
11772 }
11773 }
11774
845b51d6
PB
11775 /* ARMv4 BX veneers. */
11776 if (htab->bx_glue_size > 0)
11777 {
11778 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11779 ARM_BX_GLUE_SECTION_NAME);
11780
11781 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11782 (output_bfd, osi.sec->output_section);
11783
7413f23f 11784 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0);
845b51d6
PB
11785 }
11786
8029a119
NC
11787 /* Long calls stubs. */
11788 if (htab->stub_bfd && htab->stub_bfd->sections)
11789 {
da5938a2 11790 asection* stub_sec;
8029a119 11791
da5938a2
NC
11792 for (stub_sec = htab->stub_bfd->sections;
11793 stub_sec != NULL;
8029a119
NC
11794 stub_sec = stub_sec->next)
11795 {
11796 /* Ignore non-stub sections. */
11797 if (!strstr (stub_sec->name, STUB_SUFFIX))
11798 continue;
da5938a2 11799
8029a119 11800 osi.sec = stub_sec;
da5938a2 11801
8029a119
NC
11802 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11803 (output_bfd, osi.sec->output_section);
da5938a2 11804
8029a119
NC
11805 bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi);
11806 }
11807 }
da5938a2 11808
91a5743d
PB
11809 /* Finally, output mapping symbols for the PLT. */
11810 if (!htab->splt || htab->splt->size == 0)
11811 return TRUE;
11812
11813 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
8029a119 11814 htab->splt->output_section);
91a5743d 11815 osi.sec = htab->splt;
4e617b1e
PB
11816 /* Output mapping symbols for the plt header. SymbianOS does not have a
11817 plt header. */
11818 if (htab->vxworks_p)
11819 {
11820 /* VxWorks shared libraries have no PLT header. */
11821 if (!info->shared)
11822 {
7413f23f 11823 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
4e617b1e 11824 return FALSE;
7413f23f 11825 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12))
4e617b1e
PB
11826 return FALSE;
11827 }
11828 }
11829 else if (!htab->symbian_p)
11830 {
7413f23f 11831 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
4e617b1e
PB
11832 return FALSE;
11833#ifndef FOUR_WORD_PLT
7413f23f 11834 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16))
4e617b1e
PB
11835 return FALSE;
11836#endif
11837 }
11838
11839 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
11840 return TRUE;
11841}
11842
e489d0ae
PB
11843/* Allocate target specific section data. */
11844
11845static bfd_boolean
11846elf32_arm_new_section_hook (bfd *abfd, asection *sec)
11847{
f592407e
AM
11848 if (!sec->used_by_bfd)
11849 {
11850 _arm_elf_section_data *sdata;
11851 bfd_size_type amt = sizeof (*sdata);
e489d0ae 11852
f592407e
AM
11853 sdata = bfd_zalloc (abfd, amt);
11854 if (sdata == NULL)
11855 return FALSE;
11856 sec->used_by_bfd = sdata;
11857 }
e489d0ae 11858
957c6e41 11859 record_section_with_arm_elf_section_data (sec);
8e3de13a 11860
e489d0ae
PB
11861 return _bfd_elf_new_section_hook (abfd, sec);
11862}
11863
11864
11865/* Used to order a list of mapping symbols by address. */
11866
11867static int
11868elf32_arm_compare_mapping (const void * a, const void * b)
11869{
7f6a71ff
JM
11870 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
11871 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
11872
11873 if (amap->vma > bmap->vma)
11874 return 1;
11875 else if (amap->vma < bmap->vma)
11876 return -1;
11877 else if (amap->type > bmap->type)
11878 /* Ensure results do not depend on the host qsort for objects with
11879 multiple mapping symbols at the same address by sorting on type
11880 after vma. */
11881 return 1;
11882 else if (amap->type < bmap->type)
11883 return -1;
11884 else
11885 return 0;
e489d0ae
PB
11886}
11887
11888
11889/* Do code byteswapping. Return FALSE afterwards so that the section is
11890 written out as normal. */
11891
11892static bfd_boolean
c7b8f16e 11893elf32_arm_write_section (bfd *output_bfd,
8029a119
NC
11894 struct bfd_link_info *link_info,
11895 asection *sec,
e489d0ae
PB
11896 bfd_byte *contents)
11897{
c7b8f16e 11898 int mapcount, errcount;
8e3de13a 11899 _arm_elf_section_data *arm_data;
c7b8f16e 11900 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
e489d0ae 11901 elf32_arm_section_map *map;
c7b8f16e 11902 elf32_vfp11_erratum_list *errnode;
e489d0ae
PB
11903 bfd_vma ptr;
11904 bfd_vma end;
c7b8f16e 11905 bfd_vma offset = sec->output_section->vma + sec->output_offset;
e489d0ae
PB
11906 bfd_byte tmp;
11907 int i;
57e8b36a 11908
8e3de13a
NC
11909 /* If this section has not been allocated an _arm_elf_section_data
11910 structure then we cannot record anything. */
11911 arm_data = get_arm_elf_section_data (sec);
11912 if (arm_data == NULL)
11913 return FALSE;
11914
11915 mapcount = arm_data->mapcount;
11916 map = arm_data->map;
c7b8f16e
JB
11917 errcount = arm_data->erratumcount;
11918
11919 if (errcount != 0)
11920 {
11921 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
11922
11923 for (errnode = arm_data->erratumlist; errnode != 0;
11924 errnode = errnode->next)
11925 {
11926 bfd_vma index = errnode->vma - offset;
11927
11928 switch (errnode->type)
11929 {
11930 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
11931 {
11932 bfd_vma branch_to_veneer;
11933 /* Original condition code of instruction, plus bit mask for
11934 ARM B instruction. */
11935 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
11936 | 0x0a000000;
11937
11938 /* The instruction is before the label. */
11939 index -= 4;
11940
11941 /* Above offset included in -4 below. */
11942 branch_to_veneer = errnode->u.b.veneer->vma
11943 - errnode->vma - 4;
11944
11945 if ((signed) branch_to_veneer < -(1 << 25)
11946 || (signed) branch_to_veneer >= (1 << 25))
11947 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
11948 "range"), output_bfd);
11949
11950 insn |= (branch_to_veneer >> 2) & 0xffffff;
11951 contents[endianflip ^ index] = insn & 0xff;
11952 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
11953 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
11954 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
11955 }
11956 break;
11957
11958 case VFP11_ERRATUM_ARM_VENEER:
11959 {
11960 bfd_vma branch_from_veneer;
11961 unsigned int insn;
11962
11963 /* Take size of veneer into account. */
11964 branch_from_veneer = errnode->u.v.branch->vma
11965 - errnode->vma - 12;
11966
11967 if ((signed) branch_from_veneer < -(1 << 25)
11968 || (signed) branch_from_veneer >= (1 << 25))
11969 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
11970 "range"), output_bfd);
11971
11972 /* Original instruction. */
11973 insn = errnode->u.v.branch->u.b.vfp_insn;
11974 contents[endianflip ^ index] = insn & 0xff;
11975 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
11976 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
11977 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
11978
11979 /* Branch back to insn after original insn. */
11980 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
11981 contents[endianflip ^ (index + 4)] = insn & 0xff;
11982 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
11983 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
11984 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
11985 }
11986 break;
11987
11988 default:
11989 abort ();
11990 }
11991 }
11992 }
e489d0ae
PB
11993
11994 if (mapcount == 0)
11995 return FALSE;
11996
c7b8f16e 11997 if (globals->byteswap_code)
e489d0ae 11998 {
c7b8f16e 11999 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
57e8b36a 12000
c7b8f16e
JB
12001 ptr = map[0].vma;
12002 for (i = 0; i < mapcount; i++)
12003 {
12004 if (i == mapcount - 1)
12005 end = sec->size;
12006 else
12007 end = map[i + 1].vma;
e489d0ae 12008
c7b8f16e 12009 switch (map[i].type)
e489d0ae 12010 {
c7b8f16e
JB
12011 case 'a':
12012 /* Byte swap code words. */
12013 while (ptr + 3 < end)
12014 {
12015 tmp = contents[ptr];
12016 contents[ptr] = contents[ptr + 3];
12017 contents[ptr + 3] = tmp;
12018 tmp = contents[ptr + 1];
12019 contents[ptr + 1] = contents[ptr + 2];
12020 contents[ptr + 2] = tmp;
12021 ptr += 4;
12022 }
12023 break;
e489d0ae 12024
c7b8f16e
JB
12025 case 't':
12026 /* Byte swap code halfwords. */
12027 while (ptr + 1 < end)
12028 {
12029 tmp = contents[ptr];
12030 contents[ptr] = contents[ptr + 1];
12031 contents[ptr + 1] = tmp;
12032 ptr += 2;
12033 }
12034 break;
12035
12036 case 'd':
12037 /* Leave data alone. */
12038 break;
12039 }
12040 ptr = end;
12041 }
e489d0ae 12042 }
8e3de13a 12043
93204d3a 12044 free (map);
8e3de13a 12045 arm_data->mapcount = 0;
c7b8f16e 12046 arm_data->mapsize = 0;
8e3de13a
NC
12047 arm_data->map = NULL;
12048 unrecord_section_with_arm_elf_section_data (sec);
12049
e489d0ae
PB
12050 return FALSE;
12051}
12052
957c6e41
NC
12053static void
12054unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
12055 asection * sec,
12056 void * ignore ATTRIBUTE_UNUSED)
12057{
12058 unrecord_section_with_arm_elf_section_data (sec);
12059}
12060
12061static bfd_boolean
12062elf32_arm_close_and_cleanup (bfd * abfd)
12063{
b25e3d87
L
12064 if (abfd->sections)
12065 bfd_map_over_sections (abfd,
12066 unrecord_section_via_map_over_sections,
12067 NULL);
957c6e41
NC
12068
12069 return _bfd_elf_close_and_cleanup (abfd);
12070}
12071
b25e3d87
L
12072static bfd_boolean
12073elf32_arm_bfd_free_cached_info (bfd * abfd)
12074{
12075 if (abfd->sections)
12076 bfd_map_over_sections (abfd,
12077 unrecord_section_via_map_over_sections,
12078 NULL);
12079
12080 return _bfd_free_cached_info (abfd);
12081}
12082
b7693d02
DJ
12083/* Display STT_ARM_TFUNC symbols as functions. */
12084
12085static void
12086elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
12087 asymbol *asym)
12088{
12089 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
12090
12091 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
12092 elfsym->symbol.flags |= BSF_FUNCTION;
12093}
12094
0beaef2b
PB
12095
12096/* Mangle thumb function symbols as we read them in. */
12097
8384fb8f 12098static bfd_boolean
0beaef2b
PB
12099elf32_arm_swap_symbol_in (bfd * abfd,
12100 const void *psrc,
12101 const void *pshn,
12102 Elf_Internal_Sym *dst)
12103{
8384fb8f
AM
12104 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
12105 return FALSE;
0beaef2b
PB
12106
12107 /* New EABI objects mark thumb function symbols by setting the low bit of
12108 the address. Turn these into STT_ARM_TFUNC. */
0f88be7a 12109 if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC)
0beaef2b
PB
12110 && (dst->st_value & 1))
12111 {
12112 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
12113 dst->st_value &= ~(bfd_vma) 1;
12114 }
8384fb8f 12115 return TRUE;
0beaef2b
PB
12116}
12117
12118
12119/* Mangle thumb function symbols as we write them out. */
12120
12121static void
12122elf32_arm_swap_symbol_out (bfd *abfd,
12123 const Elf_Internal_Sym *src,
12124 void *cdst,
12125 void *shndx)
12126{
12127 Elf_Internal_Sym newsym;
12128
12129 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
12130 of the address set, as per the new EABI. We do this unconditionally
12131 because objcopy does not set the elf header flags until after
12132 it writes out the symbol table. */
12133 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
12134 {
12135 newsym = *src;
12136 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
0fa3dcad
PB
12137 if (newsym.st_shndx != SHN_UNDEF)
12138 {
12139 /* Do this only for defined symbols. At link type, the static
12140 linker will simulate the work of dynamic linker of resolving
12141 symbols and will carry over the thumbness of found symbols to
12142 the output symbol table. It's not clear how it happens, but
b0fead2b 12143 the thumbness of undefined symbols can well be different at
0fa3dcad
PB
12144 runtime, and writing '1' for them will be confusing for users
12145 and possibly for dynamic linker itself.
12146 */
12147 newsym.st_value |= 1;
12148 }
906e58ca 12149
0beaef2b
PB
12150 src = &newsym;
12151 }
12152 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
12153}
12154
b294bdf8
MM
12155/* Add the PT_ARM_EXIDX program header. */
12156
12157static bfd_boolean
906e58ca 12158elf32_arm_modify_segment_map (bfd *abfd,
b294bdf8
MM
12159 struct bfd_link_info *info ATTRIBUTE_UNUSED)
12160{
12161 struct elf_segment_map *m;
12162 asection *sec;
12163
12164 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
12165 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
12166 {
12167 /* If there is already a PT_ARM_EXIDX header, then we do not
12168 want to add another one. This situation arises when running
12169 "strip"; the input binary already has the header. */
12170 m = elf_tdata (abfd)->segment_map;
12171 while (m && m->p_type != PT_ARM_EXIDX)
12172 m = m->next;
12173 if (!m)
12174 {
12175 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
12176 if (m == NULL)
12177 return FALSE;
12178 m->p_type = PT_ARM_EXIDX;
12179 m->count = 1;
12180 m->sections[0] = sec;
12181
12182 m->next = elf_tdata (abfd)->segment_map;
12183 elf_tdata (abfd)->segment_map = m;
12184 }
12185 }
12186
12187 return TRUE;
12188}
12189
12190/* We may add a PT_ARM_EXIDX program header. */
12191
12192static int
a6b96beb
AM
12193elf32_arm_additional_program_headers (bfd *abfd,
12194 struct bfd_link_info *info ATTRIBUTE_UNUSED)
b294bdf8
MM
12195{
12196 asection *sec;
12197
12198 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
12199 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
12200 return 1;
12201 else
12202 return 0;
12203}
12204
fcb93ecf 12205/* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
906e58ca 12206
fcb93ecf
PB
12207static bfd_boolean
12208elf32_arm_is_function_type (unsigned int type)
12209{
0f88be7a 12210 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
fcb93ecf
PB
12211}
12212
0beaef2b 12213/* We use this to override swap_symbol_in and swap_symbol_out. */
906e58ca
NC
12214const struct elf_size_info elf32_arm_size_info =
12215{
0beaef2b
PB
12216 sizeof (Elf32_External_Ehdr),
12217 sizeof (Elf32_External_Phdr),
12218 sizeof (Elf32_External_Shdr),
12219 sizeof (Elf32_External_Rel),
12220 sizeof (Elf32_External_Rela),
12221 sizeof (Elf32_External_Sym),
12222 sizeof (Elf32_External_Dyn),
12223 sizeof (Elf_External_Note),
12224 4,
12225 1,
12226 32, 2,
12227 ELFCLASS32, EV_CURRENT,
12228 bfd_elf32_write_out_phdrs,
12229 bfd_elf32_write_shdrs_and_ehdr,
1489a3a0 12230 bfd_elf32_checksum_contents,
0beaef2b
PB
12231 bfd_elf32_write_relocs,
12232 elf32_arm_swap_symbol_in,
12233 elf32_arm_swap_symbol_out,
12234 bfd_elf32_slurp_reloc_table,
12235 bfd_elf32_slurp_symbol_table,
12236 bfd_elf32_swap_dyn_in,
12237 bfd_elf32_swap_dyn_out,
12238 bfd_elf32_swap_reloc_in,
12239 bfd_elf32_swap_reloc_out,
12240 bfd_elf32_swap_reloca_in,
12241 bfd_elf32_swap_reloca_out
12242};
12243
252b5132
RH
12244#define ELF_ARCH bfd_arch_arm
12245#define ELF_MACHINE_CODE EM_ARM
d0facd1b
NC
12246#ifdef __QNXTARGET__
12247#define ELF_MAXPAGESIZE 0x1000
12248#else
f21f3fe0 12249#define ELF_MAXPAGESIZE 0x8000
d0facd1b 12250#endif
b1342370 12251#define ELF_MINPAGESIZE 0x1000
24718e3b 12252#define ELF_COMMONPAGESIZE 0x1000
252b5132 12253
ba93b8ac
DJ
12254#define bfd_elf32_mkobject elf32_arm_mkobject
12255
99e4ae17
AJ
12256#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
12257#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
252b5132
RH
12258#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
12259#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
12260#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
906e58ca 12261#define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
dc810e39 12262#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
157090f7 12263#define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
252b5132 12264#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
4ab527b0 12265#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
e489d0ae 12266#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
3c9458e9 12267#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
957c6e41 12268#define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
b25e3d87 12269#define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
252b5132
RH
12270
12271#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
12272#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
6a5bb875 12273#define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
252b5132
RH
12274#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
12275#define elf_backend_check_relocs elf32_arm_check_relocs
dc810e39 12276#define elf_backend_relocate_section elf32_arm_relocate_section
e489d0ae 12277#define elf_backend_write_section elf32_arm_write_section
252b5132 12278#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
5e681ec4 12279#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
252b5132
RH
12280#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
12281#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
12282#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
74541ad4 12283#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
ba96a88f 12284#define elf_backend_post_process_headers elf32_arm_post_process_headers
99e4ae17 12285#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
c178919b 12286#define elf_backend_object_p elf32_arm_object_p
e16bb312 12287#define elf_backend_section_flags elf32_arm_section_flags
40a18ebd
NC
12288#define elf_backend_fake_sections elf32_arm_fake_sections
12289#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
e16bb312 12290#define elf_backend_final_write_processing elf32_arm_final_write_processing
5e681ec4 12291#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
b7693d02 12292#define elf_backend_symbol_processing elf32_arm_symbol_processing
0beaef2b 12293#define elf_backend_size_info elf32_arm_size_info
b294bdf8 12294#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
906e58ca
NC
12295#define elf_backend_additional_program_headers elf32_arm_additional_program_headers
12296#define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
12297#define elf_backend_begin_write_processing elf32_arm_begin_write_processing
12298#define elf_backend_is_function_type elf32_arm_is_function_type
12299
12300#define elf_backend_can_refcount 1
12301#define elf_backend_can_gc_sections 1
12302#define elf_backend_plt_readonly 1
12303#define elf_backend_want_got_plt 1
12304#define elf_backend_want_plt_sym 0
12305#define elf_backend_may_use_rel_p 1
12306#define elf_backend_may_use_rela_p 0
4e7fd91e 12307#define elf_backend_default_use_rela_p 0
252b5132 12308
04f7c78d 12309#define elf_backend_got_header_size 12
04f7c78d 12310
906e58ca
NC
12311#undef elf_backend_obj_attrs_vendor
12312#define elf_backend_obj_attrs_vendor "aeabi"
12313#undef elf_backend_obj_attrs_section
12314#define elf_backend_obj_attrs_section ".ARM.attributes"
12315#undef elf_backend_obj_attrs_arg_type
12316#define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
12317#undef elf_backend_obj_attrs_section_type
104d59d1 12318#define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
5aa6ff7c 12319#define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order
104d59d1 12320
252b5132 12321#include "elf32-target.h"
7f266840 12322
906e58ca 12323/* VxWorks Targets. */
4e7fd91e 12324
906e58ca 12325#undef TARGET_LITTLE_SYM
4e7fd91e 12326#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
906e58ca 12327#undef TARGET_LITTLE_NAME
4e7fd91e 12328#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
906e58ca 12329#undef TARGET_BIG_SYM
4e7fd91e 12330#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
906e58ca 12331#undef TARGET_BIG_NAME
4e7fd91e
PB
12332#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
12333
12334/* Like elf32_arm_link_hash_table_create -- but overrides
12335 appropriately for VxWorks. */
906e58ca 12336
4e7fd91e
PB
12337static struct bfd_link_hash_table *
12338elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
12339{
12340 struct bfd_link_hash_table *ret;
12341
12342 ret = elf32_arm_link_hash_table_create (abfd);
12343 if (ret)
12344 {
12345 struct elf32_arm_link_hash_table *htab
00a97672 12346 = (struct elf32_arm_link_hash_table *) ret;
4e7fd91e 12347 htab->use_rel = 0;
00a97672 12348 htab->vxworks_p = 1;
4e7fd91e
PB
12349 }
12350 return ret;
906e58ca 12351}
4e7fd91e 12352
00a97672
RS
12353static void
12354elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
12355{
12356 elf32_arm_final_write_processing (abfd, linker);
12357 elf_vxworks_final_write_processing (abfd, linker);
12358}
12359
906e58ca 12360#undef elf32_bed
4e7fd91e
PB
12361#define elf32_bed elf32_arm_vxworks_bed
12362
906e58ca
NC
12363#undef bfd_elf32_bfd_link_hash_table_create
12364#define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
12365#undef elf_backend_add_symbol_hook
12366#define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
12367#undef elf_backend_final_write_processing
12368#define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
12369#undef elf_backend_emit_relocs
12370#define elf_backend_emit_relocs elf_vxworks_emit_relocs
4e7fd91e 12371
906e58ca 12372#undef elf_backend_may_use_rel_p
00a97672 12373#define elf_backend_may_use_rel_p 0
906e58ca 12374#undef elf_backend_may_use_rela_p
00a97672 12375#define elf_backend_may_use_rela_p 1
906e58ca 12376#undef elf_backend_default_use_rela_p
00a97672 12377#define elf_backend_default_use_rela_p 1
906e58ca 12378#undef elf_backend_want_plt_sym
00a97672 12379#define elf_backend_want_plt_sym 1
906e58ca 12380#undef ELF_MAXPAGESIZE
00a97672 12381#define ELF_MAXPAGESIZE 0x1000
4e7fd91e
PB
12382
12383#include "elf32-target.h"
12384
12385
906e58ca 12386/* Symbian OS Targets. */
7f266840 12387
906e58ca 12388#undef TARGET_LITTLE_SYM
7f266840 12389#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
906e58ca 12390#undef TARGET_LITTLE_NAME
7f266840 12391#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
906e58ca 12392#undef TARGET_BIG_SYM
7f266840 12393#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
906e58ca 12394#undef TARGET_BIG_NAME
7f266840
DJ
12395#define TARGET_BIG_NAME "elf32-bigarm-symbian"
12396
12397/* Like elf32_arm_link_hash_table_create -- but overrides
12398 appropriately for Symbian OS. */
906e58ca 12399
7f266840
DJ
12400static struct bfd_link_hash_table *
12401elf32_arm_symbian_link_hash_table_create (bfd *abfd)
12402{
12403 struct bfd_link_hash_table *ret;
12404
12405 ret = elf32_arm_link_hash_table_create (abfd);
12406 if (ret)
12407 {
12408 struct elf32_arm_link_hash_table *htab
12409 = (struct elf32_arm_link_hash_table *)ret;
12410 /* There is no PLT header for Symbian OS. */
12411 htab->plt_header_size = 0;
95720a86
DJ
12412 /* The PLT entries are each one instruction and one word. */
12413 htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry);
7f266840 12414 htab->symbian_p = 1;
33bfe774
JB
12415 /* Symbian uses armv5t or above, so use_blx is always true. */
12416 htab->use_blx = 1;
67687978 12417 htab->root.is_relocatable_executable = 1;
7f266840
DJ
12418 }
12419 return ret;
906e58ca 12420}
7f266840 12421
b35d266b 12422static const struct bfd_elf_special_section
551b43fd 12423elf32_arm_symbian_special_sections[] =
7f266840 12424{
5cd3778d
MM
12425 /* In a BPABI executable, the dynamic linking sections do not go in
12426 the loadable read-only segment. The post-linker may wish to
12427 refer to these sections, but they are not part of the final
12428 program image. */
0112cd26
NC
12429 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
12430 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
12431 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
12432 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
12433 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
5cd3778d
MM
12434 /* These sections do not need to be writable as the SymbianOS
12435 postlinker will arrange things so that no dynamic relocation is
12436 required. */
0112cd26
NC
12437 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
12438 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
12439 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
12440 { NULL, 0, 0, 0, 0 }
7f266840
DJ
12441};
12442
c3c76620 12443static void
906e58ca 12444elf32_arm_symbian_begin_write_processing (bfd *abfd,
a4fd1a8e 12445 struct bfd_link_info *link_info)
c3c76620
MM
12446{
12447 /* BPABI objects are never loaded directly by an OS kernel; they are
12448 processed by a postlinker first, into an OS-specific format. If
12449 the D_PAGED bit is set on the file, BFD will align segments on
12450 page boundaries, so that an OS can directly map the file. With
12451 BPABI objects, that just results in wasted space. In addition,
12452 because we clear the D_PAGED bit, map_sections_to_segments will
12453 recognize that the program headers should not be mapped into any
12454 loadable segment. */
12455 abfd->flags &= ~D_PAGED;
906e58ca 12456 elf32_arm_begin_write_processing (abfd, link_info);
c3c76620 12457}
7f266840
DJ
12458
12459static bfd_boolean
906e58ca 12460elf32_arm_symbian_modify_segment_map (bfd *abfd,
b294bdf8 12461 struct bfd_link_info *info)
7f266840
DJ
12462{
12463 struct elf_segment_map *m;
12464 asection *dynsec;
12465
7f266840
DJ
12466 /* BPABI shared libraries and executables should have a PT_DYNAMIC
12467 segment. However, because the .dynamic section is not marked
12468 with SEC_LOAD, the generic ELF code will not create such a
12469 segment. */
12470 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
12471 if (dynsec)
12472 {
8ded5a0f
AM
12473 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
12474 if (m->p_type == PT_DYNAMIC)
12475 break;
12476
12477 if (m == NULL)
12478 {
12479 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
12480 m->next = elf_tdata (abfd)->segment_map;
12481 elf_tdata (abfd)->segment_map = m;
12482 }
7f266840
DJ
12483 }
12484
b294bdf8
MM
12485 /* Also call the generic arm routine. */
12486 return elf32_arm_modify_segment_map (abfd, info);
7f266840
DJ
12487}
12488
95720a86
DJ
12489/* Return address for Ith PLT stub in section PLT, for relocation REL
12490 or (bfd_vma) -1 if it should not be included. */
12491
12492static bfd_vma
12493elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt,
12494 const arelent *rel ATTRIBUTE_UNUSED)
12495{
12496 return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i;
12497}
12498
12499
8029a119 12500#undef elf32_bed
7f266840
DJ
12501#define elf32_bed elf32_arm_symbian_bed
12502
12503/* The dynamic sections are not allocated on SymbianOS; the postlinker
12504 will process them and then discard them. */
906e58ca 12505#undef ELF_DYNAMIC_SEC_FLAGS
7f266840
DJ
12506#define ELF_DYNAMIC_SEC_FLAGS \
12507 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
12508
00a97672 12509#undef elf_backend_add_symbol_hook
00a97672 12510#undef elf_backend_emit_relocs
c3c76620 12511
906e58ca
NC
12512#undef bfd_elf32_bfd_link_hash_table_create
12513#define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12514#undef elf_backend_special_sections
12515#define elf_backend_special_sections elf32_arm_symbian_special_sections
12516#undef elf_backend_begin_write_processing
12517#define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12518#undef elf_backend_final_write_processing
12519#define elf_backend_final_write_processing elf32_arm_final_write_processing
12520
12521#undef elf_backend_modify_segment_map
7f266840
DJ
12522#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12523
12524/* There is no .got section for BPABI objects, and hence no header. */
906e58ca 12525#undef elf_backend_got_header_size
7f266840
DJ
12526#define elf_backend_got_header_size 0
12527
12528/* Similarly, there is no .got.plt section. */
906e58ca 12529#undef elf_backend_want_got_plt
7f266840
DJ
12530#define elf_backend_want_got_plt 0
12531
906e58ca 12532#undef elf_backend_plt_sym_val
95720a86
DJ
12533#define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12534
906e58ca 12535#undef elf_backend_may_use_rel_p
00a97672 12536#define elf_backend_may_use_rel_p 1
906e58ca 12537#undef elf_backend_may_use_rela_p
00a97672 12538#define elf_backend_may_use_rela_p 0
906e58ca 12539#undef elf_backend_default_use_rela_p
00a97672 12540#define elf_backend_default_use_rela_p 0
906e58ca 12541#undef elf_backend_want_plt_sym
00a97672 12542#define elf_backend_want_plt_sym 0
906e58ca 12543#undef ELF_MAXPAGESIZE
00a97672 12544#define ELF_MAXPAGESIZE 0x8000
4e7fd91e 12545
7f266840 12546#include "elf32-target.h"
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