1 /* FRV-specific support for 32-bit ELF.
2 Copyright (C) 2002-2014 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/frv.h"
26 #include "dwarf2.h"
27 #include "hashtab.h"
28
29 /* Forward declarations. */
30
31
32 static reloc_howto_type elf32_frv_howto_table [] =
33 {
34 /* This reloc does nothing. */
35 HOWTO (R_FRV_NONE, /* type */
36 0, /* rightshift */
37 2, /* size (0 = byte, 1 = short, 2 = long) */
38 32, /* bitsize */
39 FALSE, /* pc_relative */
40 0, /* bitpos */
41 complain_overflow_bitfield, /* complain_on_overflow */
42 bfd_elf_generic_reloc, /* special_function */
43 "R_FRV_NONE", /* name */
44 FALSE, /* partial_inplace */
45 0, /* src_mask */
46 0, /* dst_mask */
47 FALSE), /* pcrel_offset */
48
49 /* A 32 bit absolute relocation. */
50 HOWTO (R_FRV_32, /* type */
51 0, /* rightshift */
52 2, /* size (0 = byte, 1 = short, 2 = long) */
53 32, /* bitsize */
54 FALSE, /* pc_relative */
55 0, /* bitpos */
56 complain_overflow_bitfield, /* complain_on_overflow */
57 bfd_elf_generic_reloc, /* special_function */
58 "R_FRV_32", /* name */
59 FALSE, /* partial_inplace */
60 0xffffffff, /* src_mask */
61 0xffffffff, /* dst_mask */
62 FALSE), /* pcrel_offset */
63
64 /* A 16 bit pc-relative relocation. */
65 HOWTO (R_FRV_LABEL16, /* type */
66 2, /* rightshift */
67 2, /* size (0 = byte, 1 = short, 2 = long) */
68 16, /* bitsize */
69 TRUE, /* pc_relative */
70 0, /* bitpos */
71 complain_overflow_signed, /* complain_on_overflow */
72 bfd_elf_generic_reloc, /* special_function */
73 "R_FRV_LABEL16", /* name */
74 FALSE, /* partial_inplace */
75 0xffff, /* src_mask */
76 0xffff, /* dst_mask */
77 TRUE), /* pcrel_offset */
78
79 /* A 24-bit pc-relative relocation. */
80 HOWTO (R_FRV_LABEL24, /* type */
81 2, /* rightshift */
82 2, /* size (0 = byte, 1 = short, 2 = long) */
83 26, /* bitsize */
84 TRUE, /* pc_relative */
85 0, /* bitpos */
86 complain_overflow_bitfield, /* complain_on_overflow */
87 bfd_elf_generic_reloc, /* special_function */
88 "R_FRV_LABEL24", /* name */
89 FALSE, /* partial_inplace */
90 0x7e03ffff, /* src_mask */
91 0x7e03ffff, /* dst_mask */
92 TRUE), /* pcrel_offset */
93
94 HOWTO (R_FRV_LO16, /* type */
95 0, /* rightshift */
96 2, /* size (0 = byte, 1 = short, 2 = long) */
97 16, /* bitsize */
98 FALSE, /* pc_relative */
99 0, /* bitpos */
100 complain_overflow_dont, /* complain_on_overflow */
101 bfd_elf_generic_reloc, /* special_function */
102 "R_FRV_LO16", /* name */
103 FALSE, /* partial_inplace */
104 0xffff, /* src_mask */
105 0xffff, /* dst_mask */
106 FALSE), /* pcrel_offset */
107
108 HOWTO (R_FRV_HI16, /* type */
109 0, /* rightshift */
110 2, /* size (0 = byte, 1 = short, 2 = long) */
111 16, /* bitsize */
112 FALSE, /* pc_relative */
113 0, /* bitpos */
114 complain_overflow_dont, /* complain_on_overflow */
115 bfd_elf_generic_reloc, /* special_function */
116 "R_FRV_HI16", /* name */
117 FALSE, /* partial_inplace */
118 0xffff, /* src_mask */
119 0xffff, /* dst_mask */
120 FALSE), /* pcrel_offset */
121
122 HOWTO (R_FRV_GPREL12, /* type */
123 0, /* rightshift */
124 2, /* size (0 = byte, 1 = short, 2 = long) */
125 12, /* bitsize */
126 FALSE, /* pc_relative */
127 0, /* bitpos */
128 complain_overflow_dont, /* complain_on_overflow */
129 bfd_elf_generic_reloc, /* special_function */
130 "R_FRV_GPREL12", /* name */
131 FALSE, /* partial_inplace */
132 0xfff, /* src_mask */
133 0xfff, /* dst_mask */
134 FALSE), /* pcrel_offset */
135
136 HOWTO (R_FRV_GPRELU12, /* type */
137 0, /* rightshift */
138 2, /* size (0 = byte, 1 = short, 2 = long) */
139 12, /* bitsize */
140 FALSE, /* pc_relative */
141 0, /* bitpos */
142 complain_overflow_dont, /* complain_on_overflow */
143 bfd_elf_generic_reloc, /* special_function */
144 "R_FRV_GPRELU12", /* name */
145 FALSE, /* partial_inplace */
146 0xfff, /* src_mask */
147 0x3f03f, /* dst_mask */
148 FALSE), /* pcrel_offset */
149
150 HOWTO (R_FRV_GPREL32, /* type */
151 0, /* rightshift */
152 2, /* size (0 = byte, 1 = short, 2 = long) */
153 32, /* bitsize */
154 FALSE, /* pc_relative */
155 0, /* bitpos */
156 complain_overflow_dont, /* complain_on_overflow */
157 bfd_elf_generic_reloc, /* special_function */
158 "R_FRV_GPREL32", /* name */
159 FALSE, /* partial_inplace */
160 0xffffffff, /* src_mask */
161 0xffffffff, /* dst_mask */
162 FALSE), /* pcrel_offset */
163
164 HOWTO (R_FRV_GPRELHI, /* type */
165 0, /* rightshift */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
167 16, /* bitsize */
168 FALSE, /* pc_relative */
169 0, /* bitpos */
170 complain_overflow_dont, /* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_FRV_GPRELHI", /* name */
173 FALSE, /* partial_inplace */
174 0xffff, /* src_mask */
175 0xffff, /* dst_mask */
176 FALSE), /* pcrel_offset */
177
178 HOWTO (R_FRV_GPRELLO, /* type */
179 0, /* rightshift */
180 2, /* size (0 = byte, 1 = short, 2 = long) */
181 16, /* bitsize */
182 FALSE, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_dont, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_FRV_GPRELLO", /* name */
187 FALSE, /* partial_inplace */
188 0xffff, /* src_mask */
189 0xffff, /* dst_mask */
190 FALSE), /* pcrel_offset */
191
192 /* A 12-bit signed operand with the GOT offset for the address of
193 the symbol. */
194 HOWTO (R_FRV_GOT12, /* type */
195 0, /* rightshift */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
197 12, /* bitsize */
198 FALSE, /* pc_relative */
199 0, /* bitpos */
200 complain_overflow_signed, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_FRV_GOT12", /* name */
203 FALSE, /* partial_inplace */
204 0xfff, /* src_mask */
205 0xfff, /* dst_mask */
206 FALSE), /* pcrel_offset */
207
208 /* The upper 16 bits of the GOT offset for the address of the
209 symbol. */
210 HOWTO (R_FRV_GOTHI, /* type */
211 0, /* rightshift */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
213 16, /* bitsize */
214 FALSE, /* pc_relative */
215 0, /* bitpos */
216 complain_overflow_dont, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_FRV_GOTHI", /* name */
219 FALSE, /* partial_inplace */
220 0xffff, /* src_mask */
221 0xffff, /* dst_mask */
222 FALSE), /* pcrel_offset */
223
224 /* The lower 16 bits of the GOT offset for the address of the
225 symbol. */
226 HOWTO (R_FRV_GOTLO, /* type */
227 0, /* rightshift */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
229 16, /* bitsize */
230 FALSE, /* pc_relative */
231 0, /* bitpos */
232 complain_overflow_dont, /* complain_on_overflow */
233 bfd_elf_generic_reloc, /* special_function */
234 "R_FRV_GOTLO", /* name */
235 FALSE, /* partial_inplace */
236 0xffff, /* src_mask */
237 0xffff, /* dst_mask */
238 FALSE), /* pcrel_offset */
239
240 /* The 32-bit address of the canonical descriptor of a function. */
241 HOWTO (R_FRV_FUNCDESC, /* type */
242 0, /* rightshift */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
244 32, /* bitsize */
245 FALSE, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_bitfield, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_FRV_FUNCDESC", /* name */
250 FALSE, /* partial_inplace */
251 0xffffffff, /* src_mask */
252 0xffffffff, /* dst_mask */
253 FALSE), /* pcrel_offset */
254
255 /* A 12-bit signed operand with the GOT offset for the address of
256 canonical descriptor of a function. */
257 HOWTO (R_FRV_FUNCDESC_GOT12, /* type */
258 0, /* rightshift */
259 2, /* size (0 = byte, 1 = short, 2 = long) */
260 12, /* bitsize */
261 FALSE, /* pc_relative */
262 0, /* bitpos */
263 complain_overflow_signed, /* complain_on_overflow */
264 bfd_elf_generic_reloc, /* special_function */
265 "R_FRV_FUNCDESC_GOT12", /* name */
266 FALSE, /* partial_inplace */
267 0xfff, /* src_mask */
268 0xfff, /* dst_mask */
269 FALSE), /* pcrel_offset */
270
271 /* The upper 16 bits of the GOT offset for the address of the
272 canonical descriptor of a function. */
273 HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */
274 0, /* rightshift */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
276 16, /* bitsize */
277 FALSE, /* pc_relative */
278 0, /* bitpos */
279 complain_overflow_dont, /* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_FRV_FUNCDESC_GOTHI", /* name */
282 FALSE, /* partial_inplace */
283 0xffff, /* src_mask */
284 0xffff, /* dst_mask */
285 FALSE), /* pcrel_offset */
286
287 /* The lower 16 bits of the GOT offset for the address of the
288 canonical descriptor of a function. */
289 HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */
290 0, /* rightshift */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
292 16, /* bitsize */
293 FALSE, /* pc_relative */
294 0, /* bitpos */
295 complain_overflow_dont, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_FRV_FUNCDESC_GOTLO", /* name */
298 FALSE, /* partial_inplace */
299 0xffff, /* src_mask */
300 0xffff, /* dst_mask */
301 FALSE), /* pcrel_offset */
302
303 /* The 64-bit descriptor of a function. */
304 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */
305 0, /* rightshift */
306 2, /* size (0 = byte, 1 = short, 2 = long) */
307 64, /* bitsize */
308 FALSE, /* pc_relative */
309 0, /* bitpos */
310 complain_overflow_bitfield, /* complain_on_overflow */
311 bfd_elf_generic_reloc, /* special_function */
312 "R_FRV_FUNCDESC_VALUE", /* name */
313 FALSE, /* partial_inplace */
314 0xffffffff, /* src_mask */
315 0xffffffff, /* dst_mask */
316 FALSE), /* pcrel_offset */
317
318 /* A 12-bit signed operand with the GOT offset for the address of
319 canonical descriptor of a function. */
320 HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */
321 0, /* rightshift */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
323 12, /* bitsize */
324 FALSE, /* pc_relative */
325 0, /* bitpos */
326 complain_overflow_signed, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_FRV_FUNCDESC_GOTOFF12", /* name */
329 FALSE, /* partial_inplace */
330 0xfff, /* src_mask */
331 0xfff, /* dst_mask */
332 FALSE), /* pcrel_offset */
333
334 /* The upper 16 bits of the GOT offset for the address of the
335 canonical descriptor of a function. */
336 HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */
337 0, /* rightshift */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
339 16, /* bitsize */
340 FALSE, /* pc_relative */
341 0, /* bitpos */
342 complain_overflow_dont, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_FRV_FUNCDESC_GOTOFFHI", /* name */
345 FALSE, /* partial_inplace */
346 0xffff, /* src_mask */
347 0xffff, /* dst_mask */
348 FALSE), /* pcrel_offset */
349
350 /* The lower 16 bits of the GOT offset for the address of the
351 canonical descriptor of a function. */
352 HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 16, /* bitsize */
356 FALSE, /* pc_relative */
357 0, /* bitpos */
358 complain_overflow_dont, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_FRV_FUNCDESC_GOTOFFLO", /* name */
361 FALSE, /* partial_inplace */
362 0xffff, /* src_mask */
363 0xffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
365
366 /* A 12-bit signed operand with the GOT offset for the address of
367 the symbol. */
368 HOWTO (R_FRV_GOTOFF12, /* type */
369 0, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 12, /* bitsize */
372 FALSE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_FRV_GOTOFF12", /* name */
377 FALSE, /* partial_inplace */
378 0xfff, /* src_mask */
379 0xfff, /* dst_mask */
380 FALSE), /* pcrel_offset */
381
382 /* The upper 16 bits of the GOT offset for the address of the
383 symbol. */
384 HOWTO (R_FRV_GOTOFFHI, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 16, /* bitsize */
388 FALSE, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_dont, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_FRV_GOTOFFHI", /* name */
393 FALSE, /* partial_inplace */
394 0xffff, /* src_mask */
395 0xffff, /* dst_mask */
396 FALSE), /* pcrel_offset */
397
398 /* The lower 16 bits of the GOT offset for the address of the
399 symbol. */
400 HOWTO (R_FRV_GOTOFFLO, /* type */
401 0, /* rightshift */
402 2, /* size (0 = byte, 1 = short, 2 = long) */
403 16, /* bitsize */
404 FALSE, /* pc_relative */
405 0, /* bitpos */
406 complain_overflow_dont, /* complain_on_overflow */
407 bfd_elf_generic_reloc, /* special_function */
408 "R_FRV_GOTOFFLO", /* name */
409 FALSE, /* partial_inplace */
410 0xffff, /* src_mask */
411 0xffff, /* dst_mask */
412 FALSE), /* pcrel_offset */
413
414 /* A 24-bit pc-relative relocation referencing the TLS PLT entry for
415 a thread-local symbol. If the symbol number is 0, it refers to
416 the module. */
417 HOWTO (R_FRV_GETTLSOFF, /* type */
418 2, /* rightshift */
419 2, /* size (0 = byte, 1 = short, 2 = long) */
420 26, /* bitsize */
421 TRUE, /* pc_relative */
422 0, /* bitpos */
423 complain_overflow_bitfield, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* special_function */
425 "R_FRV_GETTLSOFF", /* name */
426 FALSE, /* partial_inplace */
427 0x7e03ffff, /* src_mask */
428 0x7e03ffff, /* dst_mask */
429 TRUE), /* pcrel_offset */
430
431 /* A 64-bit TLS descriptor for a symbol. This relocation is only
432 valid as a REL, dynamic relocation. */
433 HOWTO (R_FRV_TLSDESC_VALUE, /* type */
434 0, /* rightshift */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
436 64, /* bitsize */
437 FALSE, /* pc_relative */
438 0, /* bitpos */
439 complain_overflow_bitfield, /* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_FRV_TLSDESC_VALUE", /* name */
442 FALSE, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 FALSE), /* pcrel_offset */
446
447 /* A 12-bit signed operand with the GOT offset for the TLS
448 descriptor of the symbol. */
449 HOWTO (R_FRV_GOTTLSDESC12, /* type */
450 0, /* rightshift */
451 2, /* size (0 = byte, 1 = short, 2 = long) */
452 12, /* bitsize */
453 FALSE, /* pc_relative */
454 0, /* bitpos */
455 complain_overflow_signed, /* complain_on_overflow */
456 bfd_elf_generic_reloc, /* special_function */
457 "R_FRV_GOTTLSDESC12", /* name */
458 FALSE, /* partial_inplace */
459 0xfff, /* src_mask */
460 0xfff, /* dst_mask */
461 FALSE), /* pcrel_offset */
462
463 /* The upper 16 bits of the GOT offset for the TLS descriptor of the
464 symbol. */
465 HOWTO (R_FRV_GOTTLSDESCHI, /* type */
466 0, /* rightshift */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
468 16, /* bitsize */
469 FALSE, /* pc_relative */
470 0, /* bitpos */
471 complain_overflow_dont, /* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_FRV_GOTTLSDESCHI", /* name */
474 FALSE, /* partial_inplace */
475 0xffff, /* src_mask */
476 0xffff, /* dst_mask */
477 FALSE), /* pcrel_offset */
478
479 /* The lower 16 bits of the GOT offset for the TLS descriptor of the
480 symbol. */
481 HOWTO (R_FRV_GOTTLSDESCLO, /* type */
482 0, /* rightshift */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
484 16, /* bitsize */
485 FALSE, /* pc_relative */
486 0, /* bitpos */
487 complain_overflow_dont, /* complain_on_overflow */
488 bfd_elf_generic_reloc, /* special_function */
489 "R_FRV_GOTTLSDESCLO", /* name */
490 FALSE, /* partial_inplace */
491 0xffff, /* src_mask */
492 0xffff, /* dst_mask */
493 FALSE), /* pcrel_offset */
494
495 /* A 12-bit signed operand with the offset from the module base
496 address to the thread-local symbol address. */
497 HOWTO (R_FRV_TLSMOFF12, /* type */
498 0, /* rightshift */
499 2, /* size (0 = byte, 1 = short, 2 = long) */
500 12, /* bitsize */
501 FALSE, /* pc_relative */
502 0, /* bitpos */
503 complain_overflow_signed, /* complain_on_overflow */
504 bfd_elf_generic_reloc, /* special_function */
505 "R_FRV_TLSMOFF12", /* name */
506 FALSE, /* partial_inplace */
507 0xfff, /* src_mask */
508 0xfff, /* dst_mask */
509 FALSE), /* pcrel_offset */
510
511 /* The upper 16 bits of the offset from the module base address to
512 the thread-local symbol address. */
513 HOWTO (R_FRV_TLSMOFFHI, /* type */
514 0, /* rightshift */
515 2, /* size (0 = byte, 1 = short, 2 = long) */
516 16, /* bitsize */
517 FALSE, /* pc_relative */
518 0, /* bitpos */
519 complain_overflow_dont, /* complain_on_overflow */
520 bfd_elf_generic_reloc, /* special_function */
521 "R_FRV_TLSMOFFHI", /* name */
522 FALSE, /* partial_inplace */
523 0xffff, /* src_mask */
524 0xffff, /* dst_mask */
525 FALSE), /* pcrel_offset */
526
527 /* The lower 16 bits of the offset from the module base address to
528 the thread-local symbol address. */
529 HOWTO (R_FRV_TLSMOFFLO, /* type */
530 0, /* rightshift */
531 2, /* size (0 = byte, 1 = short, 2 = long) */
532 16, /* bitsize */
533 FALSE, /* pc_relative */
534 0, /* bitpos */
535 complain_overflow_dont, /* complain_on_overflow */
536 bfd_elf_generic_reloc, /* special_function */
537 "R_FRV_TLSMOFFLO", /* name */
538 FALSE, /* partial_inplace */
539 0xffff, /* src_mask */
540 0xffff, /* dst_mask */
541 FALSE), /* pcrel_offset */
542
543 /* A 12-bit signed operand with the GOT offset for the TLSOFF entry
544 for a symbol. */
545 HOWTO (R_FRV_GOTTLSOFF12, /* type */
546 0, /* rightshift */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
548 12, /* bitsize */
549 FALSE, /* pc_relative */
550 0, /* bitpos */
551 complain_overflow_signed, /* complain_on_overflow */
552 bfd_elf_generic_reloc, /* special_function */
553 "R_FRV_GOTTLSOFF12", /* name */
554 FALSE, /* partial_inplace */
555 0xfff, /* src_mask */
556 0xfff, /* dst_mask */
557 FALSE), /* pcrel_offset */
558
559 /* The upper 16 bits of the GOT offset for the TLSOFF entry for a
560 symbol. */
561 HOWTO (R_FRV_GOTTLSOFFHI, /* type */
562 0, /* rightshift */
563 2, /* size (0 = byte, 1 = short, 2 = long) */
564 16, /* bitsize */
565 FALSE, /* pc_relative */
566 0, /* bitpos */
567 complain_overflow_dont, /* complain_on_overflow */
568 bfd_elf_generic_reloc, /* special_function */
569 "R_FRV_GOTTLSOFFHI", /* name */
570 FALSE, /* partial_inplace */
571 0xffff, /* src_mask */
572 0xffff, /* dst_mask */
573 FALSE), /* pcrel_offset */
574
575 /* The lower 16 bits of the GOT offset for the TLSOFF entry for a
576 symbol. */
577 HOWTO (R_FRV_GOTTLSOFFLO, /* type */
578 0, /* rightshift */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
580 16, /* bitsize */
581 FALSE, /* pc_relative */
582 0, /* bitpos */
583 complain_overflow_dont, /* complain_on_overflow */
584 bfd_elf_generic_reloc, /* special_function */
585 "R_FRV_GOTTLSOFFLO", /* name */
586 FALSE, /* partial_inplace */
587 0xffff, /* src_mask */
588 0xffff, /* dst_mask */
589 FALSE), /* pcrel_offset */
590
591 /* The 32-bit offset from the thread pointer (not the module base
592 address) to a thread-local symbol. */
593 HOWTO (R_FRV_TLSOFF, /* type */
594 0, /* rightshift */
595 2, /* size (0 = byte, 1 = short, 2 = long) */
596 32, /* bitsize */
597 FALSE, /* pc_relative */
598 0, /* bitpos */
599 complain_overflow_dont, /* complain_on_overflow */
600 bfd_elf_generic_reloc, /* special_function */
601 "R_FRV_TLSOFF", /* name */
602 FALSE, /* partial_inplace */
603 0xffffffff, /* src_mask */
604 0xffffffff, /* dst_mask */
605 FALSE), /* pcrel_offset */
606
607 /* An annotation for linker relaxation, that denotes the
608 symbol+addend whose TLS descriptor is referenced by the sum of
609 the two input registers of an ldd instruction. */
610 HOWTO (R_FRV_TLSDESC_RELAX, /* type */
611 0, /* rightshift */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
613 0, /* bitsize */
614 FALSE, /* pc_relative */
615 0, /* bitpos */
616 complain_overflow_dont, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_FRV_TLSDESC_RELAX", /* name */
619 FALSE, /* partial_inplace */
620 0, /* src_mask */
621 0, /* dst_mask */
622 FALSE), /* pcrel_offset */
623
624 /* An annotation for linker relaxation, that denotes the
625 symbol+addend whose TLS resolver entry point is given by the sum
626 of the two register operands of an calll instruction. */
627 HOWTO (R_FRV_GETTLSOFF_RELAX, /* type */
628 0, /* rightshift */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
630 0, /* bitsize */
631 FALSE, /* pc_relative */
632 0, /* bitpos */
633 complain_overflow_dont, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_FRV_GETTLSOFF_RELAX", /* name */
636 FALSE, /* partial_inplace */
637 0, /* src_mask */
638 0, /* dst_mask */
639 FALSE), /* pcrel_offset */
640
641 /* An annotation for linker relaxation, that denotes the
642 symbol+addend whose TLS offset GOT entry is given by the sum of
643 the two input registers of an ld instruction. */
644 HOWTO (R_FRV_TLSOFF_RELAX, /* type */
645 0, /* rightshift */
646 2, /* size (0 = byte, 1 = short, 2 = long) */
647 0, /* bitsize */
648 FALSE, /* pc_relative */
649 0, /* bitpos */
650 complain_overflow_bitfield, /* complain_on_overflow */
651 bfd_elf_generic_reloc, /* special_function */
652 "R_FRV_TLSOFF_RELAX", /* name */
653 FALSE, /* partial_inplace */
654 0, /* src_mask */
655 0, /* dst_mask */
656 FALSE), /* pcrel_offset */
657
658 /* A 32-bit offset from the module base address to
659 the thread-local symbol address. */
660 HOWTO (R_FRV_TLSMOFF, /* type */
661 0, /* rightshift */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
663 32, /* bitsize */
664 FALSE, /* pc_relative */
665 0, /* bitpos */
666 complain_overflow_dont, /* complain_on_overflow */
667 bfd_elf_generic_reloc, /* special_function */
668 "R_FRV_TLSMOFF", /* name */
669 FALSE, /* partial_inplace */
670 0xffffffff, /* src_mask */
671 0xffffffff, /* dst_mask */
672 FALSE), /* pcrel_offset */
673 };
674
675 /* GNU extension to record C++ vtable hierarchy. */
676 static reloc_howto_type elf32_frv_vtinherit_howto =
677 HOWTO (R_FRV_GNU_VTINHERIT, /* type */
678 0, /* rightshift */
679 2, /* size (0 = byte, 1 = short, 2 = long) */
680 0, /* bitsize */
681 FALSE, /* pc_relative */
682 0, /* bitpos */
683 complain_overflow_dont, /* complain_on_overflow */
684 NULL, /* special_function */
685 "R_FRV_GNU_VTINHERIT", /* name */
686 FALSE, /* partial_inplace */
687 0, /* src_mask */
688 0, /* dst_mask */
689 FALSE); /* pcrel_offset */
690
691 /* GNU extension to record C++ vtable member usage. */
692 static reloc_howto_type elf32_frv_vtentry_howto =
693 HOWTO (R_FRV_GNU_VTENTRY, /* type */
694 0, /* rightshift */
695 2, /* size (0 = byte, 1 = short, 2 = long) */
696 0, /* bitsize */
697 FALSE, /* pc_relative */
698 0, /* bitpos */
699 complain_overflow_dont, /* complain_on_overflow */
700 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
701 "R_FRV_GNU_VTENTRY", /* name */
702 FALSE, /* partial_inplace */
703 0, /* src_mask */
704 0, /* dst_mask */
705 FALSE); /* pcrel_offset */
706
707 /* The following 3 relocations are REL. The only difference to the
708 entries in the table above are that partial_inplace is TRUE. */
709 static reloc_howto_type elf32_frv_rel_32_howto =
710 HOWTO (R_FRV_32, /* type */
711 0, /* rightshift */
712 2, /* size (0 = byte, 1 = short, 2 = long) */
713 32, /* bitsize */
714 FALSE, /* pc_relative */
715 0, /* bitpos */
716 complain_overflow_bitfield, /* complain_on_overflow */
717 bfd_elf_generic_reloc, /* special_function */
718 "R_FRV_32", /* name */
719 TRUE, /* partial_inplace */
720 0xffffffff, /* src_mask */
721 0xffffffff, /* dst_mask */
722 FALSE); /* pcrel_offset */
723
724 static reloc_howto_type elf32_frv_rel_funcdesc_howto =
725 HOWTO (R_FRV_FUNCDESC, /* type */
726 0, /* rightshift */
727 2, /* size (0 = byte, 1 = short, 2 = long) */
728 32, /* bitsize */
729 FALSE, /* pc_relative */
730 0, /* bitpos */
731 complain_overflow_bitfield, /* complain_on_overflow */
732 bfd_elf_generic_reloc, /* special_function */
733 "R_FRV_FUNCDESC", /* name */
734 TRUE, /* partial_inplace */
735 0xffffffff, /* src_mask */
736 0xffffffff, /* dst_mask */
737 FALSE); /* pcrel_offset */
738
739 static reloc_howto_type elf32_frv_rel_funcdesc_value_howto =
740 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */
741 0, /* rightshift */
742 2, /* size (0 = byte, 1 = short, 2 = long) */
743 64, /* bitsize */
744 FALSE, /* pc_relative */
745 0, /* bitpos */
746 complain_overflow_bitfield, /* complain_on_overflow */
747 bfd_elf_generic_reloc, /* special_function */
748 "R_FRV_FUNCDESC_VALUE", /* name */
749 TRUE, /* partial_inplace */
750 0xffffffff, /* src_mask */
751 0xffffffff, /* dst_mask */
752 FALSE); /* pcrel_offset */
753
754 static reloc_howto_type elf32_frv_rel_tlsdesc_value_howto =
755 /* A 64-bit TLS descriptor for a symbol. The first word resolves to
756 an entry point, and the second resolves to a special argument.
757 If the symbol turns out to be in static TLS, the entry point is a
758 return instruction, and the special argument is the TLS offset
759 for the symbol. If it's in dynamic TLS, the entry point is a TLS
760 offset resolver, and the special argument is a pointer to a data
761 structure allocated by the dynamic loader, containing the GOT
762 address for the offset resolver, the module id, the offset within
763 the module, and anything else the TLS offset resolver might need
764 to determine the TLS offset for the symbol in the running
765 thread. */
766 HOWTO (R_FRV_TLSDESC_VALUE, /* type */
767 0, /* rightshift */
768 2, /* size (0 = byte, 1 = short, 2 = long) */
769 64, /* bitsize */
770 FALSE, /* pc_relative */
771 0, /* bitpos */
772 complain_overflow_bitfield, /* complain_on_overflow */
773 bfd_elf_generic_reloc, /* special_function */
774 "R_FRV_TLSDESC_VALUE", /* name */
775 TRUE, /* partial_inplace */
776 0xffffffff, /* src_mask */
777 0xffffffff, /* dst_mask */
778 FALSE); /* pcrel_offset */
779
780 static reloc_howto_type elf32_frv_rel_tlsoff_howto =
781 /* The 32-bit offset from the thread pointer (not the module base
782 address) to a thread-local symbol. */
783 HOWTO (R_FRV_TLSOFF, /* type */
784 0, /* rightshift */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
786 32, /* bitsize */
787 FALSE, /* pc_relative */
788 0, /* bitpos */
789 complain_overflow_bitfield, /* complain_on_overflow */
790 bfd_elf_generic_reloc, /* special_function */
791 "R_FRV_TLSOFF", /* name */
792 TRUE, /* partial_inplace */
793 0xffffffff, /* src_mask */
794 0xffffffff, /* dst_mask */
795 FALSE); /* pcrel_offset */
796
797
798
799 extern const bfd_target frv_elf32_fdpic_vec;
800 #define IS_FDPIC(bfd) ((bfd)->xvec == &frv_elf32_fdpic_vec)
801
802 /* An extension of the elf hash table data structure, containing some
803 additional FRV-specific data. */
804 struct frvfdpic_elf_link_hash_table
805 {
806 struct elf_link_hash_table elf;
807
808 /* A pointer to the .got section. */
809 asection *sgot;
810 /* A pointer to the .rel.got section. */
811 asection *sgotrel;
812 /* A pointer to the .rofixup section. */
813 asection *sgotfixup;
814 /* A pointer to the .plt section. */
815 asection *splt;
816 /* A pointer to the .rel.plt section. */
817 asection *spltrel;
818 /* GOT base offset. */
819 bfd_vma got0;
820 /* Location of the first non-lazy PLT entry, i.e., the number of
821 bytes taken by lazy PLT entries. If locally-bound TLS
822 descriptors require a ret instruction, it will be placed at this
823 offset. */
824 bfd_vma plt0;
825 /* A hash table holding information about which symbols were
826 referenced with which PIC-related relocations. */
827 struct htab *relocs_info;
828 /* Summary reloc information collected by
829 _frvfdpic_count_got_plt_entries. */
830 struct _frvfdpic_dynamic_got_info *g;
831 };
832
833 /* Get the FRV ELF linker hash table from a link_info structure. */
834
835 #define frvfdpic_hash_table(p) \
836 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
837 == FRV_ELF_DATA ? ((struct frvfdpic_elf_link_hash_table *) ((p)->hash)) : NULL)
838
839 #define frvfdpic_got_section(info) \
840 (frvfdpic_hash_table (info)->sgot)
841 #define frvfdpic_gotrel_section(info) \
842 (frvfdpic_hash_table (info)->sgotrel)
843 #define frvfdpic_gotfixup_section(info) \
844 (frvfdpic_hash_table (info)->sgotfixup)
845 #define frvfdpic_plt_section(info) \
846 (frvfdpic_hash_table (info)->splt)
847 #define frvfdpic_pltrel_section(info) \
848 (frvfdpic_hash_table (info)->spltrel)
849 #define frvfdpic_relocs_info(info) \
850 (frvfdpic_hash_table (info)->relocs_info)
851 #define frvfdpic_got_initial_offset(info) \
852 (frvfdpic_hash_table (info)->got0)
853 #define frvfdpic_plt_initial_offset(info) \
854 (frvfdpic_hash_table (info)->plt0)
855 #define frvfdpic_dynamic_got_plt_info(info) \
856 (frvfdpic_hash_table (info)->g)
857
858 /* Currently it's the same, but if some day we have a reason to change
859 it, we'd better be using a different macro.
860
861 FIXME: if there's any TLS PLT entry that uses local-exec or
862 initial-exec models, we could use the ret at the end of any of them
863 instead of adding one more. */
864 #define frvfdpic_plt_tls_ret_offset(info) \
865 (frvfdpic_plt_initial_offset (info))
866
867 /* The name of the dynamic interpreter. This is put in the .interp
868 section. */
869
870 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
871
872 #define DEFAULT_STACK_SIZE 0x20000
873
874 /* This structure is used to collect the number of entries present in
875 each addressable range of the got. */
876 struct _frvfdpic_dynamic_got_info
877 {
878 /* Several bits of information about the current link. */
879 struct bfd_link_info *info;
880 /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit
881 ranges. */
882 bfd_vma got12, gotlos, gothilo;
883 /* Total GOT size needed for function descriptor entries within the 12-,
884 16- or 32-bit ranges. */
885 bfd_vma fd12, fdlos, fdhilo;
886 /* Total GOT size needed by function descriptor entries referenced
887 in PLT entries, that would be profitable to place in offsets
888 close to the PIC register. */
889 bfd_vma fdplt;
890 /* Total PLT size needed by lazy PLT entries. */
891 bfd_vma lzplt;
892 /* Total GOT size needed for TLS descriptor entries within the 12-,
893 16- or 32-bit ranges. */
894 bfd_vma tlsd12, tlsdlos, tlsdhilo;
895 /* Total GOT size needed by TLS descriptors referenced in PLT
896 entries, that would be profitable to place in offers close to the
897 PIC register. */
898 bfd_vma tlsdplt;
899 /* Total PLT size needed by TLS lazy PLT entries. */
900 bfd_vma tlslzplt;
901 /* Number of relocations carried over from input object files. */
902 unsigned long relocs;
903 /* Number of fixups introduced by relocations in input object files. */
904 unsigned long fixups;
905 /* The number of fixups that reference the ret instruction added to
906 the PLT for locally-resolved TLS descriptors. */
907 unsigned long tls_ret_refs;
908 };
909
910 /* This structure is used to assign offsets to got entries, function
911 descriptors, plt entries and lazy plt entries. */
912
913 struct _frvfdpic_dynamic_got_plt_info
914 {
915 /* Summary information collected with _frvfdpic_count_got_plt_entries. */
916 struct _frvfdpic_dynamic_got_info g;
917
918 /* For each addressable range, we record a MAX (positive) and MIN
919 (negative) value. CUR is used to assign got entries, and it's
920 incremented from an initial positive value to MAX, then from MIN
921 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
922 assign function descriptors, and it's decreased from an initial
923 non-positive value to MIN, then from MAX down to CUR (unless CUR
924 wraps around first). All of MIN, MAX, CUR and FDCUR always point
925 to even words. ODD, if non-zero, indicates an odd word to be
926 used for the next got entry, otherwise CUR is used and
927 incremented by a pair of words, wrapping around when it reaches
928 MAX. FDCUR is decremented (and wrapped) before the next function
929 descriptor is chosen. FDPLT indicates the number of remaining
930 slots that can be used for function descriptors used only by PLT
931 entries.
932
933 TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR
934 starts as MAX, and grows up to TMAX, then wraps around to TMIN
935 and grows up to MIN. TLSDPLT indicates the number of remaining
936 slots that can be used for TLS descriptors used only by TLS PLT
937 entries. */
938 struct _frvfdpic_dynamic_got_alloc_data
939 {
940 bfd_signed_vma max, cur, odd, fdcur, min;
941 bfd_signed_vma tmax, tcur, tmin;
942 bfd_vma fdplt, tlsdplt;
943 } got12, gotlos, gothilo;
944 };
945
946 /* Create an FRV ELF linker hash table. */
947
948 static struct bfd_link_hash_table *
frvfdpic_elf_link_hash_table_create(bfd * abfd)949 frvfdpic_elf_link_hash_table_create (bfd *abfd)
950 {
951 struct frvfdpic_elf_link_hash_table *ret;
952 bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table);
953
954 ret = bfd_zmalloc (amt);
955 if (ret == NULL)
956 return NULL;
957
958 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
959 _bfd_elf_link_hash_newfunc,
960 sizeof (struct elf_link_hash_entry),
961 FRV_ELF_DATA))
962 {
963 free (ret);
964 return NULL;
965 }
966
967 return &ret->elf.root;
968 }
969
970 /* Decide whether a reference to a symbol can be resolved locally or
971 not. If the symbol is protected, we want the local address, but
972 its function descriptor must be assigned by the dynamic linker. */
973 #define FRVFDPIC_SYM_LOCAL(INFO, H) \
974 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
975 || ! elf_hash_table (INFO)->dynamic_sections_created)
976 #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \
977 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
978
979 /* This structure collects information on what kind of GOT, PLT or
980 function descriptors are required by relocations that reference a
981 certain symbol. */
982 struct frvfdpic_relocs_info
983 {
984 /* The index of the symbol, as stored in the relocation r_info, if
985 we have a local symbol; -1 otherwise. */
986 long symndx;
987 union
988 {
989 /* The input bfd in which the symbol is defined, if it's a local
990 symbol. */
991 bfd *abfd;
992 /* If symndx == -1, the hash table entry corresponding to a global
993 symbol (even if it turns out to bind locally, in which case it
994 should ideally be replaced with section's symndx + addend). */
995 struct elf_link_hash_entry *h;
996 } d;
997 /* The addend of the relocation that references the symbol. */
998 bfd_vma addend;
999
1000 /* The fields above are used to identify an entry. The fields below
1001 contain information on how an entry is used and, later on, which
1002 locations it was assigned. */
1003 /* The following 3 fields record whether the symbol+addend above was
1004 ever referenced with a GOT relocation. The 12 suffix indicates a
1005 GOT12 relocation; los is used for GOTLO relocations that are not
1006 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI
1007 pairs. */
1008 unsigned got12:1;
1009 unsigned gotlos:1;
1010 unsigned gothilo:1;
1011 /* Whether a FUNCDESC relocation references symbol+addend. */
1012 unsigned fd:1;
1013 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1014 unsigned fdgot12:1;
1015 unsigned fdgotlos:1;
1016 unsigned fdgothilo:1;
1017 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1018 unsigned fdgoff12:1;
1019 unsigned fdgofflos:1;
1020 unsigned fdgoffhilo:1;
1021 /* Whether a GETTLSOFF relocation references symbol+addend. */
1022 unsigned tlsplt:1;
1023 /* FIXME: we should probably add tlspltdesc, tlspltoff and
1024 tlspltimm, to tell what kind of TLS PLT entry we're generating.
1025 We might instead just pre-compute flags telling whether the
1026 object is suitable for local exec, initial exec or general
1027 dynamic addressing, and use that all over the place. We could
1028 also try to do a better job of merging TLSOFF and TLSDESC entries
1029 in main executables, but perhaps we can get rid of TLSDESC
1030 entirely in them instead. */
1031 /* Whether a GOTTLSDESC relocation references symbol+addend. */
1032 unsigned tlsdesc12:1;
1033 unsigned tlsdesclos:1;
1034 unsigned tlsdeschilo:1;
1035 /* Whether a GOTTLSOFF relocation references symbol+addend. */
1036 unsigned tlsoff12:1;
1037 unsigned tlsofflos:1;
1038 unsigned tlsoffhilo:1;
1039 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or
1040 GOTOFFHI relocations. The addend doesn't really matter, since we
1041 envision that this will only be used to check whether the symbol
1042 is mapped to the same segment as the got. */
1043 unsigned gotoff:1;
1044 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1045 unsigned call:1;
1046 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1047 relocation. */
1048 unsigned sym:1;
1049 /* Whether we need a PLT entry for a symbol. Should be implied by
1050 something like:
1051 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */
1052 unsigned plt:1;
1053 /* Whether a function descriptor should be created in this link unit
1054 for symbol+addend. Should be implied by something like:
1055 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi
1056 || ((fd || fdgot12 || fdgotlos || fdgothilo)
1057 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
1058 unsigned privfd:1;
1059 /* Whether a lazy PLT entry is needed for this symbol+addend.
1060 Should be implied by something like:
1061 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)
1062 && ! (info->flags & DF_BIND_NOW)) */
1063 unsigned lazyplt:1;
1064 /* Whether we've already emitted GOT relocations and PLT entries as
1065 needed for this symbol. */
1066 unsigned done:1;
1067
1068 /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and
1069 R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing
1070 symbol+addend. */
1071 unsigned relocs32, relocsfd, relocsfdv, relocstlsd, relocstlsoff;
1072
1073 /* The number of .rofixups entries and dynamic relocations allocated
1074 for this symbol, minus any that might have already been used. */
1075 unsigned fixups, dynrelocs;
1076
1077 /* The offsets of the GOT entries assigned to symbol+addend, to the
1078 function descriptor's address, and to a function descriptor,
1079 respectively. Should be zero if unassigned. The offsets are
1080 counted from the value that will be assigned to the PIC register,
1081 not from the beginning of the .got section. */
1082 bfd_signed_vma got_entry, fdgot_entry, fd_entry;
1083 /* The offsets of the PLT entries assigned to symbol+addend,
1084 non-lazy and lazy, respectively. If unassigned, should be
1085 (bfd_vma)-1. */
1086 bfd_vma plt_entry, lzplt_entry;
1087 /* The offsets of the GOT entries for TLS offset and TLS descriptor. */
1088 bfd_signed_vma tlsoff_entry, tlsdesc_entry;
1089 /* The offset of the TLS offset PLT entry. */
1090 bfd_vma tlsplt_entry;
1091 };
1092
1093 /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */
1094 static hashval_t
frvfdpic_relocs_info_hash(const void * entry_)1095 frvfdpic_relocs_info_hash (const void *entry_)
1096 {
1097 const struct frvfdpic_relocs_info *entry = entry_;
1098
1099 return (entry->symndx == -1
1100 ? (long) entry->d.h->root.root.hash
1101 : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend;
1102 }
1103
1104 /* Test whether the key fields of two frvfdpic_relocs_info entries are
1105 identical. */
1106 static int
frvfdpic_relocs_info_eq(const void * entry1,const void * entry2)1107 frvfdpic_relocs_info_eq (const void *entry1, const void *entry2)
1108 {
1109 const struct frvfdpic_relocs_info *e1 = entry1;
1110 const struct frvfdpic_relocs_info *e2 = entry2;
1111
1112 return e1->symndx == e2->symndx && e1->addend == e2->addend
1113 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd);
1114 }
1115
1116 /* Find or create an entry in a hash table HT that matches the key
1117 fields of the given ENTRY. If it's not found, memory for a new
1118 entry is allocated in ABFD's obstack. */
1119 static struct frvfdpic_relocs_info *
frvfdpic_relocs_info_find(struct htab * ht,bfd * abfd,const struct frvfdpic_relocs_info * entry,enum insert_option insert)1120 frvfdpic_relocs_info_find (struct htab *ht,
1121 bfd *abfd,
1122 const struct frvfdpic_relocs_info *entry,
1123 enum insert_option insert)
1124 {
1125 struct frvfdpic_relocs_info **loc =
1126 (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert);
1127
1128 if (! loc)
1129 return NULL;
1130
1131 if (*loc)
1132 return *loc;
1133
1134 *loc = bfd_zalloc (abfd, sizeof (**loc));
1135
1136 if (! *loc)
1137 return *loc;
1138
1139 (*loc)->symndx = entry->symndx;
1140 (*loc)->d = entry->d;
1141 (*loc)->addend = entry->addend;
1142 (*loc)->plt_entry = (bfd_vma)-1;
1143 (*loc)->lzplt_entry = (bfd_vma)-1;
1144 (*loc)->tlsplt_entry = (bfd_vma)-1;
1145
1146 return *loc;
1147 }
1148
1149 /* Obtain the address of the entry in HT associated with H's symbol +
1150 addend, creating a new entry if none existed. ABFD is only used
1151 for memory allocation purposes. */
1152 inline static struct frvfdpic_relocs_info *
frvfdpic_relocs_info_for_global(struct htab * ht,bfd * abfd,struct elf_link_hash_entry * h,bfd_vma addend,enum insert_option insert)1153 frvfdpic_relocs_info_for_global (struct htab *ht,
1154 bfd *abfd,
1155 struct elf_link_hash_entry *h,
1156 bfd_vma addend,
1157 enum insert_option insert)
1158 {
1159 struct frvfdpic_relocs_info entry;
1160
1161 entry.symndx = -1;
1162 entry.d.h = h;
1163 entry.addend = addend;
1164
1165 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert);
1166 }
1167
1168 /* Obtain the address of the entry in HT associated with the SYMNDXth
1169 local symbol of the input bfd ABFD, plus the addend, creating a new
1170 entry if none existed. */
1171 inline static struct frvfdpic_relocs_info *
frvfdpic_relocs_info_for_local(struct htab * ht,bfd * abfd,long symndx,bfd_vma addend,enum insert_option insert)1172 frvfdpic_relocs_info_for_local (struct htab *ht,
1173 bfd *abfd,
1174 long symndx,
1175 bfd_vma addend,
1176 enum insert_option insert)
1177 {
1178 struct frvfdpic_relocs_info entry;
1179
1180 entry.symndx = symndx;
1181 entry.d.abfd = abfd;
1182 entry.addend = addend;
1183
1184 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert);
1185 }
1186
1187 /* Merge fields set by check_relocs() of two entries that end up being
1188 mapped to the same (presumably global) symbol. */
1189
1190 inline static void
frvfdpic_pic_merge_early_relocs_info(struct frvfdpic_relocs_info * e2,struct frvfdpic_relocs_info const * e1)1191 frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2,
1192 struct frvfdpic_relocs_info const *e1)
1193 {
1194 e2->got12 |= e1->got12;
1195 e2->gotlos |= e1->gotlos;
1196 e2->gothilo |= e1->gothilo;
1197 e2->fd |= e1->fd;
1198 e2->fdgot12 |= e1->fdgot12;
1199 e2->fdgotlos |= e1->fdgotlos;
1200 e2->fdgothilo |= e1->fdgothilo;
1201 e2->fdgoff12 |= e1->fdgoff12;
1202 e2->fdgofflos |= e1->fdgofflos;
1203 e2->fdgoffhilo |= e1->fdgoffhilo;
1204 e2->tlsplt |= e1->tlsplt;
1205 e2->tlsdesc12 |= e1->tlsdesc12;
1206 e2->tlsdesclos |= e1->tlsdesclos;
1207 e2->tlsdeschilo |= e1->tlsdeschilo;
1208 e2->tlsoff12 |= e1->tlsoff12;
1209 e2->tlsofflos |= e1->tlsofflos;
1210 e2->tlsoffhilo |= e1->tlsoffhilo;
1211 e2->gotoff |= e1->gotoff;
1212 e2->call |= e1->call;
1213 e2->sym |= e1->sym;
1214 }
1215
1216 /* Every block of 65535 lazy PLT entries shares a single call to the
1217 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
1218 32767, counting from 0). All other lazy PLT entries branch to it
1219 in a single instruction. */
1220
1221 #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4)
1222 #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767)
1223
1224 /* Add a dynamic relocation to the SRELOC section. */
1225
1226 inline static bfd_vma
_frvfdpic_add_dyn_reloc(bfd * output_bfd,asection * sreloc,bfd_vma offset,int reloc_type,long dynindx,bfd_vma addend,struct frvfdpic_relocs_info * entry)1227 _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
1228 int reloc_type, long dynindx, bfd_vma addend,
1229 struct frvfdpic_relocs_info *entry)
1230 {
1231 Elf_Internal_Rela outrel;
1232 bfd_vma reloc_offset;
1233
1234 outrel.r_offset = offset;
1235 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
1236 outrel.r_addend = addend;
1237
1238 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel);
1239 BFD_ASSERT (reloc_offset < sreloc->size);
1240 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
1241 sreloc->contents + reloc_offset);
1242 sreloc->reloc_count++;
1243
1244 /* If the entry's index is zero, this relocation was probably to a
1245 linkonce section that got discarded. We reserved a dynamic
1246 relocation, but it was for another entry than the one we got at
1247 the time of emitting the relocation. Unfortunately there's no
1248 simple way for us to catch this situation, since the relocation
1249 is cleared right before calling relocate_section, at which point
1250 we no longer know what the relocation used to point to. */
1251 if (entry->symndx)
1252 {
1253 BFD_ASSERT (entry->dynrelocs > 0);
1254 entry->dynrelocs--;
1255 }
1256
1257 return reloc_offset;
1258 }
1259
1260 /* Add a fixup to the ROFIXUP section. */
1261
1262 static bfd_vma
_frvfdpic_add_rofixup(bfd * output_bfd,asection * rofixup,bfd_vma offset,struct frvfdpic_relocs_info * entry)1263 _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset,
1264 struct frvfdpic_relocs_info *entry)
1265 {
1266 bfd_vma fixup_offset;
1267
1268 if (rofixup->flags & SEC_EXCLUDE)
1269 return -1;
1270
1271 fixup_offset = rofixup->reloc_count * 4;
1272 if (rofixup->contents)
1273 {
1274 BFD_ASSERT (fixup_offset < rofixup->size);
1275 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset);
1276 }
1277 rofixup->reloc_count++;
1278
1279 if (entry && entry->symndx)
1280 {
1281 /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc
1282 above. */
1283 BFD_ASSERT (entry->fixups > 0);
1284 entry->fixups--;
1285 }
1286
1287 return fixup_offset;
1288 }
1289
1290 /* Find the segment number in which OSEC, and output section, is
1291 located. */
1292
1293 static unsigned
_frvfdpic_osec_to_segment(bfd * output_bfd,asection * osec)1294 _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec)
1295 {
1296 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
1297
1298 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
1299 }
1300
1301 inline static bfd_boolean
_frvfdpic_osec_readonly_p(bfd * output_bfd,asection * osec)1302 _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
1303 {
1304 unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec);
1305
1306 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
1307 }
1308
1309 #define FRVFDPIC_TLS_BIAS (2048 - 16)
1310
1311 /* Return the base VMA address which should be subtracted from real addresses
1312 when resolving TLSMOFF relocation.
1313 This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */
1314
1315 static bfd_vma
tls_biased_base(struct bfd_link_info * info)1316 tls_biased_base (struct bfd_link_info *info)
1317 {
1318 /* If tls_sec is NULL, we should have signalled an error already. */
1319 if (elf_hash_table (info)->tls_sec == NULL)
1320 return FRVFDPIC_TLS_BIAS;
1321 return elf_hash_table (info)->tls_sec->vma + FRVFDPIC_TLS_BIAS;
1322 }
1323
1324 /* Generate relocations for GOT entries, function descriptors, and
1325 code for PLT and lazy PLT entries. */
1326
1327 inline static bfd_boolean
_frvfdpic_emit_got_relocs_plt_entries(struct frvfdpic_relocs_info * entry,bfd * output_bfd,struct bfd_link_info * info,asection * sec,Elf_Internal_Sym * sym,bfd_vma addend)1328 _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry,
1329 bfd *output_bfd,
1330 struct bfd_link_info *info,
1331 asection *sec,
1332 Elf_Internal_Sym *sym,
1333 bfd_vma addend)
1334
1335 {
1336 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1;
1337 int dynindx = -1;
1338
1339 if (entry->done)
1340 return TRUE;
1341 entry->done = 1;
1342
1343 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry
1344 || entry->tlsoff_entry || entry->tlsdesc_entry)
1345 {
1346 /* If the symbol is dynamic, consider it for dynamic
1347 relocations, otherwise decay to section + offset. */
1348 if (entry->symndx == -1 && entry->d.h->dynindx != -1)
1349 dynindx = entry->d.h->dynindx;
1350 else
1351 {
1352 if (sec
1353 && sec->output_section
1354 && ! bfd_is_abs_section (sec->output_section)
1355 && ! bfd_is_und_section (sec->output_section))
1356 dynindx = elf_section_data (sec->output_section)->dynindx;
1357 else
1358 dynindx = 0;
1359 }
1360 }
1361
1362 /* Generate relocation for GOT entry pointing to the symbol. */
1363 if (entry->got_entry)
1364 {
1365 int idx = dynindx;
1366 bfd_vma ad = addend;
1367
1368 /* If the symbol is dynamic but binds locally, use
1369 section+offset. */
1370 if (sec && (entry->symndx != -1
1371 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1372 {
1373 if (entry->symndx == -1)
1374 ad += entry->d.h->root.u.def.value;
1375 else
1376 ad += sym->st_value;
1377 ad += sec->output_offset;
1378 if (sec->output_section && elf_section_data (sec->output_section))
1379 idx = elf_section_data (sec->output_section)->dynindx;
1380 else
1381 idx = 0;
1382 }
1383
1384 /* If we're linking an executable at a fixed address, we can
1385 omit the dynamic relocation as long as the symbol is local to
1386 this module. */
1387 if (info->executable && !info->pie
1388 && (entry->symndx != -1
1389 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1390 {
1391 if (sec)
1392 ad += sec->output_section->vma;
1393 if (entry->symndx != -1
1394 || entry->d.h->root.type != bfd_link_hash_undefweak)
1395 _frvfdpic_add_rofixup (output_bfd,
1396 frvfdpic_gotfixup_section (info),
1397 frvfdpic_got_section (info)->output_section
1398 ->vma
1399 + frvfdpic_got_section (info)->output_offset
1400 + frvfdpic_got_initial_offset (info)
1401 + entry->got_entry, entry);
1402 }
1403 else
1404 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info),
1405 _bfd_elf_section_offset
1406 (output_bfd, info,
1407 frvfdpic_got_section (info),
1408 frvfdpic_got_initial_offset (info)
1409 + entry->got_entry)
1410 + frvfdpic_got_section (info)
1411 ->output_section->vma
1412 + frvfdpic_got_section (info)->output_offset,
1413 R_FRV_32, idx, ad, entry);
1414
1415 bfd_put_32 (output_bfd, ad,
1416 frvfdpic_got_section (info)->contents
1417 + frvfdpic_got_initial_offset (info)
1418 + entry->got_entry);
1419 }
1420
1421 /* Generate relocation for GOT entry pointing to a canonical
1422 function descriptor. */
1423 if (entry->fdgot_entry)
1424 {
1425 int reloc, idx;
1426 bfd_vma ad = 0;
1427
1428 if (! (entry->symndx == -1
1429 && entry->d.h->root.type == bfd_link_hash_undefweak
1430 && FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1431 {
1432 /* If the symbol is dynamic and there may be dynamic symbol
1433 resolution because we are, or are linked with, a shared
1434 library, emit a FUNCDESC relocation such that the dynamic
1435 linker will allocate the function descriptor. If the
1436 symbol needs a non-local function descriptor but binds
1437 locally (e.g., its visibility is protected, emit a
1438 dynamic relocation decayed to section+offset. */
1439 if (entry->symndx == -1
1440 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)
1441 && FRVFDPIC_SYM_LOCAL (info, entry->d.h)
1442 && !(info->executable && !info->pie))
1443 {
1444 reloc = R_FRV_FUNCDESC;
1445 idx = elf_section_data (entry->d.h->root.u.def.section
1446 ->output_section)->dynindx;
1447 ad = entry->d.h->root.u.def.section->output_offset
1448 + entry->d.h->root.u.def.value;
1449 }
1450 else if (entry->symndx == -1
1451 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))
1452 {
1453 reloc = R_FRV_FUNCDESC;
1454 idx = dynindx;
1455 ad = addend;
1456 if (ad)
1457 {
1458 (*info->callbacks->reloc_dangerous)
1459 (info, _("relocation requires zero addend"),
1460 elf_hash_table (info)->dynobj,
1461 frvfdpic_got_section (info),
1462 entry->fdgot_entry);
1463 return FALSE;
1464 }
1465 }
1466 else
1467 {
1468 /* Otherwise, we know we have a private function descriptor,
1469 so reference it directly. */
1470 if (elf_hash_table (info)->dynamic_sections_created)
1471 BFD_ASSERT (entry->privfd);
1472 reloc = R_FRV_32;
1473 idx = elf_section_data (frvfdpic_got_section (info)
1474 ->output_section)->dynindx;
1475 ad = frvfdpic_got_section (info)->output_offset
1476 + frvfdpic_got_initial_offset (info) + entry->fd_entry;
1477 }
1478
1479 /* If there is room for dynamic symbol resolution, emit the
1480 dynamic relocation. However, if we're linking an
1481 executable at a fixed location, we won't have emitted a
1482 dynamic symbol entry for the got section, so idx will be
1483 zero, which means we can and should compute the address
1484 of the private descriptor ourselves. */
1485 if (info->executable && !info->pie
1486 && (entry->symndx != -1
1487 || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)))
1488 {
1489 ad += frvfdpic_got_section (info)->output_section->vma;
1490 _frvfdpic_add_rofixup (output_bfd,
1491 frvfdpic_gotfixup_section (info),
1492 frvfdpic_got_section (info)
1493 ->output_section->vma
1494 + frvfdpic_got_section (info)
1495 ->output_offset
1496 + frvfdpic_got_initial_offset (info)
1497 + entry->fdgot_entry, entry);
1498 }
1499 else
1500 _frvfdpic_add_dyn_reloc (output_bfd,
1501 frvfdpic_gotrel_section (info),
1502 _bfd_elf_section_offset
1503 (output_bfd, info,
1504 frvfdpic_got_section (info),
1505 frvfdpic_got_initial_offset (info)
1506 + entry->fdgot_entry)
1507 + frvfdpic_got_section (info)
1508 ->output_section->vma
1509 + frvfdpic_got_section (info)
1510 ->output_offset,
1511 reloc, idx, ad, entry);
1512 }
1513
1514 bfd_put_32 (output_bfd, ad,
1515 frvfdpic_got_section (info)->contents
1516 + frvfdpic_got_initial_offset (info)
1517 + entry->fdgot_entry);
1518 }
1519
1520 /* Generate relocation to fill in a private function descriptor in
1521 the GOT. */
1522 if (entry->fd_entry)
1523 {
1524 int idx = dynindx;
1525 bfd_vma ad = addend;
1526 bfd_vma ofst;
1527 long lowword, highword;
1528
1529 /* If the symbol is dynamic but binds locally, use
1530 section+offset. */
1531 if (sec && (entry->symndx != -1
1532 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1533 {
1534 if (entry->symndx == -1)
1535 ad += entry->d.h->root.u.def.value;
1536 else
1537 ad += sym->st_value;
1538 ad += sec->output_offset;
1539 if (sec->output_section && elf_section_data (sec->output_section))
1540 idx = elf_section_data (sec->output_section)->dynindx;
1541 else
1542 idx = 0;
1543 }
1544
1545 /* If we're linking an executable at a fixed address, we can
1546 omit the dynamic relocation as long as the symbol is local to
1547 this module. */
1548 if (info->executable && !info->pie
1549 && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1550 {
1551 if (sec)
1552 ad += sec->output_section->vma;
1553 ofst = 0;
1554 if (entry->symndx != -1
1555 || entry->d.h->root.type != bfd_link_hash_undefweak)
1556 {
1557 _frvfdpic_add_rofixup (output_bfd,
1558 frvfdpic_gotfixup_section (info),
1559 frvfdpic_got_section (info)
1560 ->output_section->vma
1561 + frvfdpic_got_section (info)
1562 ->output_offset
1563 + frvfdpic_got_initial_offset (info)
1564 + entry->fd_entry, entry);
1565 _frvfdpic_add_rofixup (output_bfd,
1566 frvfdpic_gotfixup_section (info),
1567 frvfdpic_got_section (info)
1568 ->output_section->vma
1569 + frvfdpic_got_section (info)
1570 ->output_offset
1571 + frvfdpic_got_initial_offset (info)
1572 + entry->fd_entry + 4, entry);
1573 }
1574 }
1575 else
1576 {
1577 ofst =
1578 _frvfdpic_add_dyn_reloc (output_bfd,
1579 entry->lazyplt
1580 ? frvfdpic_pltrel_section (info)
1581 : frvfdpic_gotrel_section (info),
1582 _bfd_elf_section_offset
1583 (output_bfd, info,
1584 frvfdpic_got_section (info),
1585 frvfdpic_got_initial_offset (info)
1586 + entry->fd_entry)
1587 + frvfdpic_got_section (info)
1588 ->output_section->vma
1589 + frvfdpic_got_section (info)
1590 ->output_offset,
1591 R_FRV_FUNCDESC_VALUE, idx, ad, entry);
1592 }
1593
1594 /* If we've omitted the dynamic relocation, just emit the fixed
1595 addresses of the symbol and of the local GOT base offset. */
1596 if (info->executable && !info->pie && sec && sec->output_section)
1597 {
1598 lowword = ad;
1599 highword = frvfdpic_got_section (info)->output_section->vma
1600 + frvfdpic_got_section (info)->output_offset
1601 + frvfdpic_got_initial_offset (info);
1602 }
1603 else if (entry->lazyplt)
1604 {
1605 if (ad)
1606 {
1607 (*info->callbacks->reloc_dangerous)
1608 (info, _("relocation requires zero addend"),
1609 elf_hash_table (info)->dynobj,
1610 frvfdpic_got_section (info),
1611 entry->fd_entry);
1612 return FALSE;
1613 }
1614
1615 fd_lazy_rel_offset = ofst;
1616
1617 /* A function descriptor used for lazy or local resolving is
1618 initialized such that its high word contains the output
1619 section index in which the PLT entries are located, and
1620 the low word contains the address of the lazy PLT entry
1621 entry point, that must be within the memory region
1622 assigned to that section. */
1623 lowword = entry->lzplt_entry + 4
1624 + frvfdpic_plt_section (info)->output_offset
1625 + frvfdpic_plt_section (info)->output_section->vma;
1626 highword = _frvfdpic_osec_to_segment
1627 (output_bfd, frvfdpic_plt_section (info)->output_section);
1628 }
1629 else
1630 {
1631 /* A function descriptor for a local function gets the index
1632 of the section. For a non-local function, it's
1633 disregarded. */
1634 lowword = ad;
1635 if (sec == NULL
1636 || (entry->symndx == -1 && entry->d.h->dynindx != -1
1637 && entry->d.h->dynindx == idx))
1638 highword = 0;
1639 else
1640 highword = _frvfdpic_osec_to_segment
1641 (output_bfd, sec->output_section);
1642 }
1643
1644 bfd_put_32 (output_bfd, lowword,
1645 frvfdpic_got_section (info)->contents
1646 + frvfdpic_got_initial_offset (info)
1647 + entry->fd_entry);
1648 bfd_put_32 (output_bfd, highword,
1649 frvfdpic_got_section (info)->contents
1650 + frvfdpic_got_initial_offset (info)
1651 + entry->fd_entry + 4);
1652 }
1653
1654 /* Generate code for the PLT entry. */
1655 if (entry->plt_entry != (bfd_vma) -1)
1656 {
1657 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents
1658 + entry->plt_entry;
1659
1660 BFD_ASSERT (entry->fd_entry);
1661
1662 /* Figure out what kind of PLT entry we need, depending on the
1663 location of the function descriptor within the GOT. */
1664 if (entry->fd_entry >= -(1 << (12 - 1))
1665 && entry->fd_entry < (1 << (12 - 1)))
1666 {
1667 /* lddi @(gr15, fd_entry), gr14 */
1668 bfd_put_32 (output_bfd,
1669 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)),
1670 plt_code);
1671 plt_code += 4;
1672 }
1673 else
1674 {
1675 if (entry->fd_entry >= -(1 << (16 - 1))
1676 && entry->fd_entry < (1 << (16 - 1)))
1677 {
1678 /* setlos lo(fd_entry), gr14 */
1679 bfd_put_32 (output_bfd,
1680 0x9cfc0000
1681 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)),
1682 plt_code);
1683 plt_code += 4;
1684 }
1685 else
1686 {
1687 /* sethi.p hi(fd_entry), gr14
1688 setlo lo(fd_entry), gr14 */
1689 bfd_put_32 (output_bfd,
1690 0x1cf80000
1691 | ((entry->fd_entry >> 16)
1692 & (((bfd_vma)1 << 16) - 1)),
1693 plt_code);
1694 plt_code += 4;
1695 bfd_put_32 (output_bfd,
1696 0x9cf40000
1697 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)),
1698 plt_code);
1699 plt_code += 4;
1700 }
1701 /* ldd @(gr14,gr15),gr14 */
1702 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code);
1703 plt_code += 4;
1704 }
1705 /* jmpl @(gr14,gr0) */
1706 bfd_put_32 (output_bfd, 0x8030e000, plt_code);
1707 }
1708
1709 /* Generate code for the lazy PLT entry. */
1710 if (entry->lzplt_entry != (bfd_vma) -1)
1711 {
1712 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents
1713 + entry->lzplt_entry;
1714 bfd_vma resolverStub_addr;
1715
1716 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code);
1717 lzplt_code += 4;
1718
1719 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE
1720 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC;
1721 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info))
1722 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12;
1723
1724 if (entry->lzplt_entry == resolverStub_addr)
1725 {
1726 /* This is a lazy PLT entry that includes a resolver call. */
1727 /* ldd @(gr15,gr0), gr4
1728 jmpl @(gr4,gr0) */
1729 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code);
1730 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4);
1731 }
1732 else
1733 {
1734 /* bra resolverStub */
1735 bfd_put_32 (output_bfd,
1736 0xc01a0000
1737 | (((resolverStub_addr - entry->lzplt_entry)
1738 / 4) & (((bfd_vma)1 << 16) - 1)),
1739 lzplt_code);
1740 }
1741 }
1742
1743 /* Generate relocation for GOT entry holding the TLS offset. */
1744 if (entry->tlsoff_entry)
1745 {
1746 int idx = dynindx;
1747 bfd_vma ad = addend;
1748
1749 if (entry->symndx != -1
1750 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))
1751 {
1752 /* If the symbol is dynamic but binds locally, use
1753 section+offset. */
1754 if (sec)
1755 {
1756 if (entry->symndx == -1)
1757 ad += entry->d.h->root.u.def.value;
1758 else
1759 ad += sym->st_value;
1760 ad += sec->output_offset;
1761 if (sec->output_section
1762 && elf_section_data (sec->output_section))
1763 idx = elf_section_data (sec->output_section)->dynindx;
1764 else
1765 idx = 0;
1766 }
1767 }
1768
1769 /* *ABS*+addend is special for TLS relocations, use only the
1770 addend. */
1771 if (info->executable
1772 && idx == 0
1773 && (bfd_is_abs_section (sec)
1774 || bfd_is_und_section (sec)))
1775 ;
1776 /* If we're linking an executable, we can entirely omit the
1777 dynamic relocation if the symbol is local to this module. */
1778 else if (info->executable
1779 && (entry->symndx != -1
1780 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1781 {
1782 if (sec)
1783 ad += sec->output_section->vma - tls_biased_base (info);
1784 }
1785 else
1786 {
1787 if (idx == 0
1788 && (bfd_is_abs_section (sec)
1789 || bfd_is_und_section (sec)))
1790 {
1791 if (! elf_hash_table (info)->tls_sec)
1792 {
1793 (*info->callbacks->undefined_symbol)
1794 (info, "TLS section", elf_hash_table (info)->dynobj,
1795 frvfdpic_got_section (info), entry->tlsoff_entry, TRUE);
1796 return FALSE;
1797 }
1798 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx;
1799 ad += FRVFDPIC_TLS_BIAS;
1800 }
1801 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info),
1802 _bfd_elf_section_offset
1803 (output_bfd, info,
1804 frvfdpic_got_section (info),
1805 frvfdpic_got_initial_offset (info)
1806 + entry->tlsoff_entry)
1807 + frvfdpic_got_section (info)
1808 ->output_section->vma
1809 + frvfdpic_got_section (info)
1810 ->output_offset,
1811 R_FRV_TLSOFF, idx, ad, entry);
1812 }
1813
1814 bfd_put_32 (output_bfd, ad,
1815 frvfdpic_got_section (info)->contents
1816 + frvfdpic_got_initial_offset (info)
1817 + entry->tlsoff_entry);
1818 }
1819
1820 if (entry->tlsdesc_entry)
1821 {
1822 int idx = dynindx;
1823 bfd_vma ad = addend;
1824
1825 /* If the symbol is dynamic but binds locally, use
1826 section+offset. */
1827 if (sec && (entry->symndx != -1
1828 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1829 {
1830 if (entry->symndx == -1)
1831 ad += entry->d.h->root.u.def.value;
1832 else
1833 ad += sym->st_value;
1834 ad += sec->output_offset;
1835 if (sec->output_section && elf_section_data (sec->output_section))
1836 idx = elf_section_data (sec->output_section)->dynindx;
1837 else
1838 idx = 0;
1839 }
1840
1841 /* If we didn't set up a TLS offset entry, but we're linking an
1842 executable and the symbol binds locally, we can use the
1843 module offset in the TLS descriptor in relaxations. */
1844 if (info->executable && ! entry->tlsoff_entry)
1845 entry->tlsoff_entry = entry->tlsdesc_entry + 4;
1846
1847 if (info->executable && !info->pie
1848 && ((idx == 0
1849 && (bfd_is_abs_section (sec)
1850 || bfd_is_und_section (sec)))
1851 || entry->symndx != -1
1852 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1853 {
1854 /* *ABS*+addend is special for TLS relocations, use only the
1855 addend for the TLS offset, and take the module id as
1856 0. */
1857 if (idx == 0
1858 && (bfd_is_abs_section (sec)
1859 || bfd_is_und_section (sec)))
1860 ;
1861 /* For other TLS symbols that bind locally, add the section
1862 TLS offset to the addend. */
1863 else if (sec)
1864 ad += sec->output_section->vma - tls_biased_base (info);
1865
1866 bfd_put_32 (output_bfd,
1867 frvfdpic_plt_section (info)->output_section->vma
1868 + frvfdpic_plt_section (info)->output_offset
1869 + frvfdpic_plt_tls_ret_offset (info),
1870 frvfdpic_got_section (info)->contents
1871 + frvfdpic_got_initial_offset (info)
1872 + entry->tlsdesc_entry);
1873
1874 _frvfdpic_add_rofixup (output_bfd,
1875 frvfdpic_gotfixup_section (info),
1876 frvfdpic_got_section (info)
1877 ->output_section->vma
1878 + frvfdpic_got_section (info)
1879 ->output_offset
1880 + frvfdpic_got_initial_offset (info)
1881 + entry->tlsdesc_entry, entry);
1882
1883 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs);
1884
1885 /* We've used one of the reserved fixups, so discount it so
1886 that we can check at the end that we've used them
1887 all. */
1888 frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--;
1889
1890 /* While at that, make sure the ret instruction makes to the
1891 right location in the PLT. We could do it only when we
1892 got to 0, but since the check at the end will only print
1893 a warning, make sure we have the ret in place in case the
1894 warning is missed. */
1895 bfd_put_32 (output_bfd, 0xc03a4000,
1896 frvfdpic_plt_section (info)->contents
1897 + frvfdpic_plt_tls_ret_offset (info));
1898 }
1899 else
1900 {
1901 if (idx == 0
1902 && (bfd_is_abs_section (sec)
1903 || bfd_is_und_section (sec)))
1904 {
1905 if (! elf_hash_table (info)->tls_sec)
1906 {
1907 (*info->callbacks->undefined_symbol)
1908 (info, "TLS section", elf_hash_table (info)->dynobj,
1909 frvfdpic_got_section (info), entry->tlsdesc_entry, TRUE);
1910 return FALSE;
1911 }
1912 idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx;
1913 ad += FRVFDPIC_TLS_BIAS;
1914 }
1915
1916 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info),
1917 _bfd_elf_section_offset
1918 (output_bfd, info,
1919 frvfdpic_got_section (info),
1920 frvfdpic_got_initial_offset (info)
1921 + entry->tlsdesc_entry)
1922 + frvfdpic_got_section (info)
1923 ->output_section->vma
1924 + frvfdpic_got_section (info)
1925 ->output_offset,
1926 R_FRV_TLSDESC_VALUE, idx, ad, entry);
1927
1928 bfd_put_32 (output_bfd, 0,
1929 frvfdpic_got_section (info)->contents
1930 + frvfdpic_got_initial_offset (info)
1931 + entry->tlsdesc_entry);
1932 }
1933
1934 bfd_put_32 (output_bfd, ad,
1935 frvfdpic_got_section (info)->contents
1936 + frvfdpic_got_initial_offset (info)
1937 + entry->tlsdesc_entry + 4);
1938 }
1939
1940 /* Generate code for the get-TLS-offset PLT entry. */
1941 if (entry->tlsplt_entry != (bfd_vma) -1)
1942 {
1943 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents
1944 + entry->tlsplt_entry;
1945
1946 if (info->executable
1947 && (entry->symndx != -1
1948 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1949 {
1950 int idx = dynindx;
1951 bfd_vma ad = addend;
1952
1953 /* sec may be NULL when referencing an undefweak symbol
1954 while linking a static executable. */
1955 if (!sec)
1956 {
1957 BFD_ASSERT (entry->symndx == -1
1958 && entry->d.h->root.type == bfd_link_hash_undefweak);
1959 }
1960 else
1961 {
1962 if (entry->symndx == -1)
1963 ad += entry->d.h->root.u.def.value;
1964 else
1965 ad += sym->st_value;
1966 ad += sec->output_offset;
1967 if (sec->output_section
1968 && elf_section_data (sec->output_section))
1969 idx = elf_section_data (sec->output_section)->dynindx;
1970 else
1971 idx = 0;
1972 }
1973
1974 /* *ABS*+addend is special for TLS relocations, use only the
1975 addend for the TLS offset, and take the module id as
1976 0. */
1977 if (idx == 0
1978 && (bfd_is_abs_section (sec)
1979 || bfd_is_und_section (sec)))
1980 ;
1981 /* For other TLS symbols that bind locally, add the section
1982 TLS offset to the addend. */
1983 else if (sec)
1984 ad += sec->output_section->vma - tls_biased_base (info);
1985
1986 if ((bfd_signed_vma)ad >= -(1 << (16 - 1))
1987 && (bfd_signed_vma)ad < (1 << (16 - 1)))
1988 {
1989 /* setlos lo(ad), gr9 */
1990 bfd_put_32 (output_bfd,
1991 0x92fc0000
1992 | (ad
1993 & (((bfd_vma)1 << 16) - 1)),
1994 plt_code);
1995 plt_code += 4;
1996 }
1997 else
1998 {
1999 /* sethi.p hi(ad), gr9
2000 setlo lo(ad), gr9 */
2001 bfd_put_32 (output_bfd,
2002 0x12f80000
2003 | ((ad >> 16)
2004 & (((bfd_vma)1 << 16) - 1)),
2005 plt_code);
2006 plt_code += 4;
2007 bfd_put_32 (output_bfd,
2008 0x92f40000
2009 | (ad
2010 & (((bfd_vma)1 << 16) - 1)),
2011 plt_code);
2012 plt_code += 4;
2013 }
2014 /* ret */
2015 bfd_put_32 (output_bfd, 0xc03a4000, plt_code);
2016 }
2017 else if (entry->tlsoff_entry)
2018 {
2019 /* Figure out what kind of PLT entry we need, depending on the
2020 location of the TLS descriptor within the GOT. */
2021 if (entry->tlsoff_entry >= -(1 << (12 - 1))
2022 && entry->tlsoff_entry < (1 << (12 - 1)))
2023 {
2024 /* ldi @(gr15, tlsoff_entry), gr9 */
2025 bfd_put_32 (output_bfd,
2026 0x92c8f000 | (entry->tlsoff_entry
2027 & ((1 << 12) - 1)),
2028 plt_code);
2029 plt_code += 4;
2030 }
2031 else
2032 {
2033 if (entry->tlsoff_entry >= -(1 << (16 - 1))
2034 && entry->tlsoff_entry < (1 << (16 - 1)))
2035 {
2036 /* setlos lo(tlsoff_entry), gr8 */
2037 bfd_put_32 (output_bfd,
2038 0x90fc0000
2039 | (entry->tlsoff_entry
2040 & (((bfd_vma)1 << 16) - 1)),
2041 plt_code);
2042 plt_code += 4;
2043 }
2044 else
2045 {
2046 /* sethi.p hi(tlsoff_entry), gr8
2047 setlo lo(tlsoff_entry), gr8 */
2048 bfd_put_32 (output_bfd,
2049 0x10f80000
2050 | ((entry->tlsoff_entry >> 16)
2051 & (((bfd_vma)1 << 16) - 1)),
2052 plt_code);
2053 plt_code += 4;
2054 bfd_put_32 (output_bfd,
2055 0x90f40000
2056 | (entry->tlsoff_entry
2057 & (((bfd_vma)1 << 16) - 1)),
2058 plt_code);
2059 plt_code += 4;
2060 }
2061 /* ld @(gr15,gr8),gr9 */
2062 bfd_put_32 (output_bfd, 0x9008f108, plt_code);
2063 plt_code += 4;
2064 }
2065 /* ret */
2066 bfd_put_32 (output_bfd, 0xc03a4000, plt_code);
2067 }
2068 else
2069 {
2070 BFD_ASSERT (entry->tlsdesc_entry);
2071
2072 /* Figure out what kind of PLT entry we need, depending on the
2073 location of the TLS descriptor within the GOT. */
2074 if (entry->tlsdesc_entry >= -(1 << (12 - 1))
2075 && entry->tlsdesc_entry < (1 << (12 - 1)))
2076 {
2077 /* lddi @(gr15, tlsdesc_entry), gr8 */
2078 bfd_put_32 (output_bfd,
2079 0x90ccf000 | (entry->tlsdesc_entry
2080 & ((1 << 12) - 1)),
2081 plt_code);
2082 plt_code += 4;
2083 }
2084 else
2085 {
2086 if (entry->tlsdesc_entry >= -(1 << (16 - 1))
2087 && entry->tlsdesc_entry < (1 << (16 - 1)))
2088 {
2089 /* setlos lo(tlsdesc_entry), gr8 */
2090 bfd_put_32 (output_bfd,
2091 0x90fc0000
2092 | (entry->tlsdesc_entry
2093 & (((bfd_vma)1 << 16) - 1)),
2094 plt_code);
2095 plt_code += 4;
2096 }
2097 else
2098 {
2099 /* sethi.p hi(tlsdesc_entry), gr8
2100 setlo lo(tlsdesc_entry), gr8 */
2101 bfd_put_32 (output_bfd,
2102 0x10f80000
2103 | ((entry->tlsdesc_entry >> 16)
2104 & (((bfd_vma)1 << 16) - 1)),
2105 plt_code);
2106 plt_code += 4;
2107 bfd_put_32 (output_bfd,
2108 0x90f40000
2109 | (entry->tlsdesc_entry
2110 & (((bfd_vma)1 << 16) - 1)),
2111 plt_code);
2112 plt_code += 4;
2113 }
2114 /* ldd @(gr15,gr8),gr8 */
2115 bfd_put_32 (output_bfd, 0x9008f148, plt_code);
2116 plt_code += 4;
2117 }
2118 /* jmpl @(gr8,gr0) */
2119 bfd_put_32 (output_bfd, 0x80308000, plt_code);
2120 }
2121 }
2122
2123 return TRUE;
2124 }
2125
2126 /* Handle an FRV small data reloc. */
2127
2128 static bfd_reloc_status_type
elf32_frv_relocate_gprel12(struct bfd_link_info * info,bfd * input_bfd,asection * input_section,Elf_Internal_Rela * relocation,bfd_byte * contents,bfd_vma value)2129 elf32_frv_relocate_gprel12 (struct bfd_link_info *info,
2130 bfd *input_bfd,
2131 asection *input_section,
2132 Elf_Internal_Rela *relocation,
2133 bfd_byte *contents,
2134 bfd_vma value)
2135 {
2136 bfd_vma insn;
2137 bfd_vma gp;
2138 struct bfd_link_hash_entry *h;
2139
2140 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
2141
2142 gp = (h->u.def.value
2143 + h->u.def.section->output_section->vma
2144 + h->u.def.section->output_offset);
2145
2146 value -= input_section->output_section->vma;
2147 value -= (gp - input_section->output_section->vma);
2148
2149 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
2150
2151 value += relocation->r_addend;
2152
2153 if ((long) value > 0x7ff || (long) value < -0x800)
2154 return bfd_reloc_overflow;
2155
2156 bfd_put_32 (input_bfd,
2157 (insn & 0xfffff000) | (value & 0xfff),
2158 contents + relocation->r_offset);
2159
2160 return bfd_reloc_ok;
2161 }
2162
2163 /* Handle an FRV small data reloc. for the u12 field. */
2164
2165 static bfd_reloc_status_type
elf32_frv_relocate_gprelu12(struct bfd_link_info * info,bfd * input_bfd,asection * input_section,Elf_Internal_Rela * relocation,bfd_byte * contents,bfd_vma value)2166 elf32_frv_relocate_gprelu12 (struct bfd_link_info *info,
2167 bfd *input_bfd,
2168 asection *input_section,
2169 Elf_Internal_Rela *relocation,
2170 bfd_byte *contents,
2171 bfd_vma value)
2172 {
2173 bfd_vma insn;
2174 bfd_vma gp;
2175 struct bfd_link_hash_entry *h;
2176 bfd_vma mask;
2177
2178 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
2179
2180 gp = (h->u.def.value
2181 + h->u.def.section->output_section->vma
2182 + h->u.def.section->output_offset);
2183
2184 value -= input_section->output_section->vma;
2185 value -= (gp - input_section->output_section->vma);
2186
2187 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
2188
2189 value += relocation->r_addend;
2190
2191 if ((long) value > 0x7ff || (long) value < -0x800)
2192 return bfd_reloc_overflow;
2193
2194 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */
2195 mask = 0x3f03f;
2196 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f);
2197
2198 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
2199
2200 return bfd_reloc_ok;
2201 }
2202
2203 /* Handle an FRV ELF HI16 reloc. */
2204
2205 static bfd_reloc_status_type
elf32_frv_relocate_hi16(bfd * input_bfd,Elf_Internal_Rela * relhi,bfd_byte * contents,bfd_vma value)2206 elf32_frv_relocate_hi16 (bfd *input_bfd,
2207 Elf_Internal_Rela *relhi,
2208 bfd_byte *contents,
2209 bfd_vma value)
2210 {
2211 bfd_vma insn;
2212
2213 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
2214
2215 value += relhi->r_addend;
2216 value = ((value >> 16) & 0xffff);
2217
2218 insn = (insn & 0xffff0000) | value;
2219
2220 if ((long) value > 0xffff || (long) value < -0x10000)
2221 return bfd_reloc_overflow;
2222
2223 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset);
2224 return bfd_reloc_ok;
2225
2226 }
2227 static bfd_reloc_status_type
elf32_frv_relocate_lo16(bfd * input_bfd,Elf_Internal_Rela * rello,bfd_byte * contents,bfd_vma value)2228 elf32_frv_relocate_lo16 (bfd *input_bfd,
2229 Elf_Internal_Rela *rello,
2230 bfd_byte *contents,
2231 bfd_vma value)
2232 {
2233 bfd_vma insn;
2234
2235 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
2236
2237 value += rello->r_addend;
2238 value = value & 0xffff;
2239
2240 insn = (insn & 0xffff0000) | value;
2241
2242 if ((long) value > 0xffff || (long) value < -0x10000)
2243 return bfd_reloc_overflow;
2244
2245 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
2246 return bfd_reloc_ok;
2247 }
2248
2249 /* Perform the relocation for the CALL label24 instruction. */
2250
2251 static bfd_reloc_status_type
elf32_frv_relocate_label24(bfd * input_bfd,asection * input_section,Elf_Internal_Rela * rello,bfd_byte * contents,bfd_vma value)2252 elf32_frv_relocate_label24 (bfd *input_bfd,
2253 asection *input_section,
2254 Elf_Internal_Rela *rello,
2255 bfd_byte *contents,
2256 bfd_vma value)
2257 {
2258 bfd_vma insn;
2259 bfd_vma label6;
2260 bfd_vma label18;
2261
2262 /* The format for the call instruction is:
2263
2264 0 000000 0001111 000000000000000000
2265 label6 opcode label18
2266
2267 The branch calculation is: pc + (4*label24)
2268 where label24 is the concatenation of label6 and label18. */
2269
2270 /* Grab the instruction. */
2271 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
2272
2273 value -= input_section->output_section->vma + input_section->output_offset;
2274 value -= rello->r_offset;
2275 value += rello->r_addend;
2276
2277 value = value >> 2;
2278
2279 label6 = value & 0xfc0000;
2280 label6 = label6 << 7;
2281
2282 label18 = value & 0x3ffff;
2283
2284 insn = insn & 0x803c0000;
2285 insn = insn | label6;
2286 insn = insn | label18;
2287
2288 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
2289
2290 return bfd_reloc_ok;
2291 }
2292
2293 static bfd_reloc_status_type
elf32_frv_relocate_gprelhi(struct bfd_link_info * info,bfd * input_bfd,asection * input_section,Elf_Internal_Rela * relocation,bfd_byte * contents,bfd_vma value)2294 elf32_frv_relocate_gprelhi (struct bfd_link_info *info,
2295 bfd *input_bfd,
2296 asection *input_section,
2297 Elf_Internal_Rela *relocation,
2298 bfd_byte *contents,
2299 bfd_vma value)
2300 {
2301 bfd_vma insn;
2302 bfd_vma gp;
2303 struct bfd_link_hash_entry *h;
2304
2305 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
2306
2307 gp = (h->u.def.value
2308 + h->u.def.section->output_section->vma
2309 + h->u.def.section->output_offset);
2310
2311 value -= input_section->output_section->vma;
2312 value -= (gp - input_section->output_section->vma);
2313 value += relocation->r_addend;
2314 value = ((value >> 16) & 0xffff);
2315
2316 if ((long) value > 0xffff || (long) value < -0x10000)
2317 return bfd_reloc_overflow;
2318
2319 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
2320 insn = (insn & 0xffff0000) | value;
2321
2322 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
2323 return bfd_reloc_ok;
2324 }
2325
2326 static bfd_reloc_status_type
elf32_frv_relocate_gprello(struct bfd_link_info * info,bfd * input_bfd,asection * input_section,Elf_Internal_Rela * relocation,bfd_byte * contents,bfd_vma value)2327 elf32_frv_relocate_gprello (struct bfd_link_info *info,
2328 bfd *input_bfd,
2329 asection *input_section,
2330 Elf_Internal_Rela *relocation,
2331 bfd_byte *contents,
2332 bfd_vma value)
2333 {
2334 bfd_vma insn;
2335 bfd_vma gp;
2336 struct bfd_link_hash_entry *h;
2337
2338 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
2339
2340 gp = (h->u.def.value
2341 + h->u.def.section->output_section->vma
2342 + h->u.def.section->output_offset);
2343
2344 value -= input_section->output_section->vma;
2345 value -= (gp - input_section->output_section->vma);
2346 value += relocation->r_addend;
2347 value = value & 0xffff;
2348
2349 if ((long) value > 0xffff || (long) value < -0x10000)
2350 return bfd_reloc_overflow;
2351
2352 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
2353 insn = (insn & 0xffff0000) | value;
2354
2355 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
2356
2357 return bfd_reloc_ok;
2358 }
2359
2360 static reloc_howto_type *
frv_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)2361 frv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2362 bfd_reloc_code_real_type code)
2363 {
2364 switch (code)
2365 {
2366 default:
2367 break;
2368
2369 case BFD_RELOC_NONE:
2370 return &elf32_frv_howto_table[ (int) R_FRV_NONE];
2371
2372 case BFD_RELOC_32:
2373 if (elf_elfheader (abfd)->e_type == ET_EXEC
2374 || elf_elfheader (abfd)->e_type == ET_DYN)
2375 return &elf32_frv_rel_32_howto;
2376 /* Fall through. */
2377 case BFD_RELOC_CTOR:
2378 return &elf32_frv_howto_table[ (int) R_FRV_32];
2379
2380 case BFD_RELOC_FRV_LABEL16:
2381 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16];
2382
2383 case BFD_RELOC_FRV_LABEL24:
2384 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24];
2385
2386 case BFD_RELOC_FRV_LO16:
2387 return &elf32_frv_howto_table[ (int) R_FRV_LO16];
2388
2389 case BFD_RELOC_FRV_HI16:
2390 return &elf32_frv_howto_table[ (int) R_FRV_HI16];
2391
2392 case BFD_RELOC_FRV_GPREL12:
2393 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12];
2394
2395 case BFD_RELOC_FRV_GPRELU12:
2396 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12];
2397
2398 case BFD_RELOC_FRV_GPREL32:
2399 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32];
2400
2401 case BFD_RELOC_FRV_GPRELHI:
2402 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI];
2403
2404 case BFD_RELOC_FRV_GPRELLO:
2405 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO];
2406
2407 case BFD_RELOC_FRV_GOT12:
2408 return &elf32_frv_howto_table[ (int) R_FRV_GOT12];
2409
2410 case BFD_RELOC_FRV_GOTHI:
2411 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI];
2412
2413 case BFD_RELOC_FRV_GOTLO:
2414 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO];
2415
2416 case BFD_RELOC_FRV_FUNCDESC:
2417 if (elf_elfheader (abfd)->e_type == ET_EXEC
2418 || elf_elfheader (abfd)->e_type == ET_DYN)
2419 return &elf32_frv_rel_funcdesc_howto;
2420 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC];
2421
2422 case BFD_RELOC_FRV_FUNCDESC_GOT12:
2423 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12];
2424
2425 case BFD_RELOC_FRV_FUNCDESC_GOTHI:
2426 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI];
2427
2428 case BFD_RELOC_FRV_FUNCDESC_GOTLO:
2429 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO];
2430
2431 case BFD_RELOC_FRV_FUNCDESC_VALUE:
2432 if (elf_elfheader (abfd)->e_type == ET_EXEC
2433 || elf_elfheader (abfd)->e_type == ET_DYN)
2434 return &elf32_frv_rel_funcdesc_value_howto;
2435 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE];
2436
2437 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12:
2438 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12];
2439
2440 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI:
2441 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI];
2442
2443 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO:
2444 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO];
2445
2446 case BFD_RELOC_FRV_GOTOFF12:
2447 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12];
2448
2449 case BFD_RELOC_FRV_GOTOFFHI:
2450 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI];
2451
2452 case BFD_RELOC_FRV_GOTOFFLO:
2453 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO];
2454
2455 case BFD_RELOC_FRV_GETTLSOFF:
2456 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF];
2457
2458 case BFD_RELOC_FRV_TLSDESC_VALUE:
2459 if (elf_elfheader (abfd)->e_type == ET_EXEC
2460 || elf_elfheader (abfd)->e_type == ET_DYN)
2461 return &elf32_frv_rel_tlsdesc_value_howto;
2462 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE];
2463
2464 case BFD_RELOC_FRV_GOTTLSDESC12:
2465 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12];
2466
2467 case BFD_RELOC_FRV_GOTTLSDESCHI:
2468 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI];
2469
2470 case BFD_RELOC_FRV_GOTTLSDESCLO:
2471 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO];
2472
2473 case BFD_RELOC_FRV_TLSMOFF12:
2474 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12];
2475
2476 case BFD_RELOC_FRV_TLSMOFFHI:
2477 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI];
2478
2479 case BFD_RELOC_FRV_TLSMOFFLO:
2480 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO];
2481
2482 case BFD_RELOC_FRV_GOTTLSOFF12:
2483 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12];
2484
2485 case BFD_RELOC_FRV_GOTTLSOFFHI:
2486 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI];
2487
2488 case BFD_RELOC_FRV_GOTTLSOFFLO:
2489 return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO];
2490
2491 case BFD_RELOC_FRV_TLSOFF:
2492 if (elf_elfheader (abfd)->e_type == ET_EXEC
2493 || elf_elfheader (abfd)->e_type == ET_DYN)
2494 return &elf32_frv_rel_tlsoff_howto;
2495 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF];
2496
2497 case BFD_RELOC_FRV_TLSDESC_RELAX:
2498 return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX];
2499
2500 case BFD_RELOC_FRV_GETTLSOFF_RELAX:
2501 return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX];
2502
2503 case BFD_RELOC_FRV_TLSOFF_RELAX:
2504 return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX];
2505
2506 case BFD_RELOC_FRV_TLSMOFF:
2507 return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF];
2508
2509 case BFD_RELOC_VTABLE_INHERIT:
2510 return &elf32_frv_vtinherit_howto;
2511
2512 case BFD_RELOC_VTABLE_ENTRY:
2513 return &elf32_frv_vtentry_howto;
2514 }
2515
2516 return NULL;
2517 }
2518
2519 static reloc_howto_type *
frv_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)2520 frv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
2521 {
2522 unsigned int i;
2523
2524 for (i = 0;
2525 i < sizeof (elf32_frv_howto_table) / sizeof (elf32_frv_howto_table[0]);
2526 i++)
2527 if (elf32_frv_howto_table[i].name != NULL
2528 && strcasecmp (elf32_frv_howto_table[i].name, r_name) == 0)
2529 return &elf32_frv_howto_table[i];
2530
2531 if (strcasecmp (elf32_frv_vtinherit_howto.name, r_name) == 0)
2532 return &elf32_frv_vtinherit_howto;
2533 if (strcasecmp (elf32_frv_vtentry_howto.name, r_name) == 0)
2534 return &elf32_frv_vtentry_howto;
2535
2536 return NULL;
2537 }
2538
2539 /* Set the howto pointer for an FRV ELF reloc. */
2540
2541 static void
frv_info_to_howto_rela(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)2542 frv_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
2543 arelent *cache_ptr,
2544 Elf_Internal_Rela *dst)
2545 {
2546 unsigned int r_type;
2547
2548 r_type = ELF32_R_TYPE (dst->r_info);
2549 switch (r_type)
2550 {
2551 case R_FRV_GNU_VTINHERIT:
2552 cache_ptr->howto = &elf32_frv_vtinherit_howto;
2553 break;
2554
2555 case R_FRV_GNU_VTENTRY:
2556 cache_ptr->howto = &elf32_frv_vtentry_howto;
2557 break;
2558
2559 default:
2560 cache_ptr->howto = & elf32_frv_howto_table [r_type];
2561 break;
2562 }
2563 }
2564
2565 /* Set the howto pointer for an FRV ELF REL reloc. */
2566 static void
frvfdpic_info_to_howto_rel(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)2567 frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
2568 arelent *cache_ptr, Elf_Internal_Rela *dst)
2569 {
2570 unsigned int r_type;
2571
2572 r_type = ELF32_R_TYPE (dst->r_info);
2573 switch (r_type)
2574 {
2575 case R_FRV_32:
2576 cache_ptr->howto = &elf32_frv_rel_32_howto;
2577 break;
2578
2579 case R_FRV_FUNCDESC:
2580 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto;
2581 break;
2582
2583 case R_FRV_FUNCDESC_VALUE:
2584 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto;
2585 break;
2586
2587 case R_FRV_TLSDESC_VALUE:
2588 cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto;
2589 break;
2590
2591 case R_FRV_TLSOFF:
2592 cache_ptr->howto = &elf32_frv_rel_tlsoff_howto;
2593 break;
2594
2595 default:
2596 cache_ptr->howto = NULL;
2597 break;
2598 }
2599 }
2600
2601 /* Perform a single relocation. By default we use the standard BFD
2602 routines, but a few relocs, we have to do them ourselves. */
2603
2604 static bfd_reloc_status_type
frv_final_link_relocate(reloc_howto_type * howto,bfd * input_bfd,asection * input_section,bfd_byte * contents,Elf_Internal_Rela * rel,bfd_vma relocation)2605 frv_final_link_relocate (reloc_howto_type *howto,
2606 bfd *input_bfd,
2607 asection *input_section,
2608 bfd_byte *contents,
2609 Elf_Internal_Rela *rel,
2610 bfd_vma relocation)
2611 {
2612 return _bfd_final_link_relocate (howto, input_bfd, input_section,
2613 contents, rel->r_offset, relocation,
2614 rel->r_addend);
2615 }
2616
2617
2618 /* Relocate an FRV ELF section.
2619
2620 The RELOCATE_SECTION function is called by the new ELF backend linker
2621 to handle the relocations for a section.
2622
2623 The relocs are always passed as Rela structures; if the section
2624 actually uses Rel structures, the r_addend field will always be
2625 zero.
2626
2627 This function is responsible for adjusting the section contents as
2628 necessary, and (if using Rela relocs and generating a relocatable
2629 output file) adjusting the reloc addend as necessary.
2630
2631 This function does not have to worry about setting the reloc
2632 address or the reloc symbol index.
2633
2634 LOCAL_SYMS is a pointer to the swapped in local symbols.
2635
2636 LOCAL_SECTIONS is an array giving the section in the input file
2637 corresponding to the st_shndx field of each local symbol.
2638
2639 The global hash table entry for the global symbols can be found
2640 via elf_sym_hashes (input_bfd).
2641
2642 When generating relocatable output, this function must handle
2643 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2644 going to be the section symbol corresponding to the output
2645 section, which means that the addend must be adjusted
2646 accordingly. */
2647
2648 static bfd_boolean
elf32_frv_relocate_section(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info,bfd * input_bfd,asection * input_section,bfd_byte * contents,Elf_Internal_Rela * relocs,Elf_Internal_Sym * local_syms,asection ** local_sections)2649 elf32_frv_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2650 struct bfd_link_info *info,
2651 bfd *input_bfd,
2652 asection *input_section,
2653 bfd_byte *contents,
2654 Elf_Internal_Rela *relocs,
2655 Elf_Internal_Sym *local_syms,
2656 asection **local_sections)
2657 {
2658 Elf_Internal_Shdr *symtab_hdr;
2659 struct elf_link_hash_entry **sym_hashes;
2660 Elf_Internal_Rela *rel;
2661 Elf_Internal_Rela *relend;
2662 unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment,
2663 check_segment[2];
2664 int silence_segment_error = !(info->shared || info->pie);
2665 unsigned long insn;
2666
2667 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
2668 sym_hashes = elf_sym_hashes (input_bfd);
2669 relend = relocs + input_section->reloc_count;
2670
2671 isec_segment = _frvfdpic_osec_to_segment (output_bfd,
2672 input_section->output_section);
2673 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info))
2674 got_segment = _frvfdpic_osec_to_segment (output_bfd,
2675 frvfdpic_got_section (info)
2676 ->output_section);
2677 else
2678 got_segment = -1;
2679 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info))
2680 gprel_segment = _frvfdpic_osec_to_segment (output_bfd,
2681 frvfdpic_gotfixup_section (info)
2682 ->output_section);
2683 else
2684 gprel_segment = -1;
2685 if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info))
2686 plt_segment = _frvfdpic_osec_to_segment (output_bfd,
2687 frvfdpic_plt_section (info)
2688 ->output_section);
2689 else
2690 plt_segment = -1;
2691 if (elf_hash_table (info)->tls_sec)
2692 tls_segment = _frvfdpic_osec_to_segment (output_bfd,
2693 elf_hash_table (info)->tls_sec);
2694 else
2695 tls_segment = -1;
2696
2697 for (rel = relocs; rel < relend; rel ++)
2698 {
2699 reloc_howto_type *howto;
2700 unsigned long r_symndx;
2701 Elf_Internal_Sym *sym;
2702 asection *sec;
2703 struct elf_link_hash_entry *h;
2704 bfd_vma relocation;
2705 bfd_reloc_status_type r;
2706 const char *name;
2707 int r_type;
2708 asection *osec;
2709 struct frvfdpic_relocs_info *picrel;
2710 bfd_vma orig_addend = rel->r_addend;
2711
2712 r_type = ELF32_R_TYPE (rel->r_info);
2713
2714 if ( r_type == R_FRV_GNU_VTINHERIT
2715 || r_type == R_FRV_GNU_VTENTRY)
2716 continue;
2717
2718 r_symndx = ELF32_R_SYM (rel->r_info);
2719 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info);
2720 h = NULL;
2721 sym = NULL;
2722 sec = NULL;
2723
2724 if (r_symndx < symtab_hdr->sh_info)
2725 {
2726 sym = local_syms + r_symndx;
2727 osec = sec = local_sections [r_symndx];
2728 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2729
2730 name = bfd_elf_string_from_elf_section
2731 (input_bfd, symtab_hdr->sh_link, sym->st_name);
2732 if (name == NULL || name[0] == 0)
2733 name = bfd_section_name (input_bfd, sec);
2734 }
2735 else
2736 {
2737 bfd_boolean warned, ignored;
2738 bfd_boolean unresolved_reloc;
2739
2740 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2741 r_symndx, symtab_hdr, sym_hashes,
2742 h, sec, relocation,
2743 unresolved_reloc, warned, ignored);
2744 osec = sec;
2745 name = h->root.root.string;
2746 }
2747
2748 if (sec != NULL && discarded_section (sec))
2749 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2750 rel, 1, relend, howto, 0, contents);
2751
2752 if (info->relocatable)
2753 continue;
2754
2755 if (r_type != R_FRV_TLSMOFF
2756 && h != NULL
2757 && (h->root.type == bfd_link_hash_defined
2758 || h->root.type == bfd_link_hash_defweak)
2759 && !FRVFDPIC_SYM_LOCAL (info, h))
2760 {
2761 osec = sec = NULL;
2762 relocation = 0;
2763 }
2764
2765 switch (r_type)
2766 {
2767 case R_FRV_LABEL24:
2768 case R_FRV_32:
2769 if (! IS_FDPIC (output_bfd))
2770 goto non_fdpic;
2771
2772 case R_FRV_GOT12:
2773 case R_FRV_GOTHI:
2774 case R_FRV_GOTLO:
2775 case R_FRV_FUNCDESC_GOT12:
2776 case R_FRV_FUNCDESC_GOTHI:
2777 case R_FRV_FUNCDESC_GOTLO:
2778 case R_FRV_GOTOFF12:
2779 case R_FRV_GOTOFFHI:
2780 case R_FRV_GOTOFFLO:
2781 case R_FRV_FUNCDESC_GOTOFF12:
2782 case R_FRV_FUNCDESC_GOTOFFHI:
2783 case R_FRV_FUNCDESC_GOTOFFLO:
2784 case R_FRV_FUNCDESC:
2785 case R_FRV_FUNCDESC_VALUE:
2786 case R_FRV_GETTLSOFF:
2787 case R_FRV_TLSDESC_VALUE:
2788 case R_FRV_GOTTLSDESC12:
2789 case R_FRV_GOTTLSDESCHI:
2790 case R_FRV_GOTTLSDESCLO:
2791 case R_FRV_TLSMOFF12:
2792 case R_FRV_TLSMOFFHI:
2793 case R_FRV_TLSMOFFLO:
2794 case R_FRV_GOTTLSOFF12:
2795 case R_FRV_GOTTLSOFFHI:
2796 case R_FRV_GOTTLSOFFLO:
2797 case R_FRV_TLSOFF:
2798 case R_FRV_TLSDESC_RELAX:
2799 case R_FRV_GETTLSOFF_RELAX:
2800 case R_FRV_TLSOFF_RELAX:
2801 case R_FRV_TLSMOFF:
2802 if (h != NULL)
2803 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info
2804 (info), input_bfd, h,
2805 orig_addend, INSERT);
2806 else
2807 /* In order to find the entry we created before, we must
2808 use the original addend, not the one that may have been
2809 modified by _bfd_elf_rela_local_sym(). */
2810 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info
2811 (info), input_bfd, r_symndx,
2812 orig_addend, INSERT);
2813 if (! picrel)
2814 return FALSE;
2815
2816 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info,
2817 osec, sym,
2818 rel->r_addend))
2819 {
2820 info->callbacks->einfo
2821 (_("%H: relocation to `%s+%v'"
2822 " may have caused the error above\n"),
2823 input_bfd, input_section, rel->r_offset, name, rel->r_addend);
2824 return FALSE;
2825 }
2826
2827 break;
2828
2829 default:
2830 non_fdpic:
2831 picrel = NULL;
2832 if (h
2833 && ! FRVFDPIC_SYM_LOCAL (info, h)
2834 && _bfd_elf_section_offset (output_bfd, info, input_section,
2835 rel->r_offset) != (bfd_vma) -1)
2836 {
2837 info->callbacks->einfo
2838 (_("%H: relocation references symbol"
2839 " not defined in the module\n"),
2840 input_bfd, input_section, rel->r_offset);
2841 return FALSE;
2842 }
2843 break;
2844 }
2845
2846 switch (r_type)
2847 {
2848 case R_FRV_GETTLSOFF:
2849 case R_FRV_TLSDESC_VALUE:
2850 case R_FRV_GOTTLSDESC12:
2851 case R_FRV_GOTTLSDESCHI:
2852 case R_FRV_GOTTLSDESCLO:
2853 case R_FRV_TLSMOFF12:
2854 case R_FRV_TLSMOFFHI:
2855 case R_FRV_TLSMOFFLO:
2856 case R_FRV_GOTTLSOFF12:
2857 case R_FRV_GOTTLSOFFHI:
2858 case R_FRV_GOTTLSOFFLO:
2859 case R_FRV_TLSOFF:
2860 case R_FRV_TLSDESC_RELAX:
2861 case R_FRV_GETTLSOFF_RELAX:
2862 case R_FRV_TLSOFF_RELAX:
2863 case R_FRV_TLSMOFF:
2864 if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec)))
2865 relocation += tls_biased_base (info);
2866 break;
2867
2868 default:
2869 break;
2870 }
2871
2872 /* Try to apply TLS relaxations. */
2873 if (1)
2874 switch (r_type)
2875 {
2876
2877 #define LOCAL_EXEC_P(info, picrel) \
2878 ((info)->executable \
2879 && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h)))
2880 #define INITIAL_EXEC_P(info, picrel) \
2881 (((info)->executable || (info)->flags & DF_STATIC_TLS) \
2882 && (picrel)->tlsoff_entry)
2883
2884 #define IN_RANGE_FOR_OFST12_P(value) \
2885 ((bfd_vma)((value) + 2048) < (bfd_vma)4096)
2886 #define IN_RANGE_FOR_SETLOS_P(value) \
2887 ((bfd_vma)((value) + 32768) < (bfd_vma)65536)
2888 #define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \
2889 (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info)))
2890
2891 #define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \
2892 (LOCAL_EXEC_P ((info), (picrel)) \
2893 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info)))
2894 #define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \
2895 (INITIAL_EXEC_P ((info), (picrel)) \
2896 && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry))
2897
2898 #define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \
2899 (LOCAL_EXEC_P ((info), (picrel)))
2900 #define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \
2901 (INITIAL_EXEC_P ((info), (picrel)))
2902
2903 #define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \
2904 (LOCAL_EXEC_P ((info), (picrel)) \
2905 && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info)))
2906
2907 case R_FRV_GETTLSOFF:
2908 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2909
2910 /* Is this a call instruction? */
2911 if ((insn & (unsigned long)0x01fc0000) != 0x003c0000)
2912 {
2913 info->callbacks->einfo
2914 (_("%H: R_FRV_GETTLSOFF not applied to a call instruction\n"),
2915 input_bfd, input_section, rel->r_offset);
2916 return FALSE;
2917 }
2918
2919 if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel,
2920 relocation + rel->r_addend))
2921 {
2922 /* Replace the call instruction (except the packing bit)
2923 with setlos #tlsmofflo(symbol+offset), gr9. */
2924 insn &= (unsigned long)0x80000000;
2925 insn |= (unsigned long)0x12fc0000;
2926 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
2927
2928 r_type = R_FRV_TLSMOFFLO;
2929 howto = elf32_frv_howto_table + r_type;
2930 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
2931 }
2932
2933 else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel))
2934 {
2935 /* Replace the call instruction (except the packing bit)
2936 with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */
2937 insn &= (unsigned long)0x80000000;
2938 insn |= (unsigned long)0x12c8f000;
2939 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
2940
2941 r_type = R_FRV_GOTTLSOFF12;
2942 howto = elf32_frv_howto_table + r_type;
2943 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
2944 }
2945
2946 break;
2947
2948 case R_FRV_GOTTLSDESC12:
2949 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2950
2951 /* Is this an lddi instruction? */
2952 if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000)
2953 {
2954 info->callbacks->einfo
2955 (_("%H: R_FRV_GOTTLSDESC12"
2956 " not applied to an lddi instruction\n"),
2957 input_bfd, input_section, rel->r_offset);
2958 return FALSE;
2959 }
2960
2961 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel,
2962 relocation + rel->r_addend)
2963 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend,
2964 info))
2965 {
2966 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC
2967 with setlos #tlsmofflo(symbol+offset), gr<C+1>.
2968 Preserve the packing bit. */
2969 insn = (insn & (unsigned long)0x80000000)
2970 | ((insn + (unsigned long)0x02000000)
2971 & (unsigned long)0x7e000000);
2972 insn |= (unsigned long)0x00fc0000;
2973 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
2974
2975 r_type = R_FRV_TLSMOFFLO;
2976 howto = elf32_frv_howto_table + r_type;
2977 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
2978 }
2979
2980 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel,
2981 relocation + rel->r_addend))
2982 {
2983 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC
2984 with sethi #tlsmoffhi(symbol+offset), gr<C+1>.
2985 Preserve the packing bit. */
2986 insn = (insn & (unsigned long)0x80000000)
2987 | ((insn + (unsigned long)0x02000000)
2988 & (unsigned long)0x7e000000);
2989 insn |= (unsigned long)0x00f80000;
2990 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
2991
2992 r_type = R_FRV_TLSMOFFHI;
2993 howto = elf32_frv_howto_table + r_type;
2994 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
2995 }
2996
2997 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel))
2998 {
2999 /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC
3000 with ldi @(grB, #gottlsoff12(symbol+offset),
3001 gr<C+1>. Preserve the packing bit. If gottlsoff12
3002 overflows, we'll error out, but that's sort-of ok,
3003 since we'd started with gottlsdesc12, that's actually
3004 more demanding. Compiling with -fPIE instead of
3005 -fpie would fix it; linking with --relax should fix
3006 it as well. */
3007 insn = (insn & (unsigned long)0x80cbf000)
3008 | ((insn + (unsigned long)0x02000000)
3009 & (unsigned long)0x7e000000);
3010 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3011
3012 r_type = R_FRV_GOTTLSOFF12;
3013 howto = elf32_frv_howto_table + r_type;
3014 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3015 }
3016
3017 break;
3018
3019 case R_FRV_GOTTLSDESCHI:
3020 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3021
3022 /* Is this a sethi instruction? */
3023 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000)
3024 {
3025 info->callbacks->einfo
3026 (_("%H: R_FRV_GOTTLSDESCHI"
3027 " not applied to a sethi instruction\n"),
3028 input_bfd, input_section, rel->r_offset);
3029 return FALSE;
3030 }
3031
3032 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel,
3033 relocation + rel->r_addend)
3034 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)
3035 && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)))
3036 {
3037 /* Replace sethi with a nop. Preserve the packing bit. */
3038 insn &= (unsigned long)0x80000000;
3039 insn |= (unsigned long)0x00880000;
3040 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3041
3042 /* Nothing to relocate. */
3043 continue;
3044 }
3045
3046 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel))
3047 {
3048 /* Simply decay GOTTLSDESC to GOTTLSOFF. */
3049 r_type = R_FRV_GOTTLSOFFHI;
3050 howto = elf32_frv_howto_table + r_type;
3051 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3052 }
3053
3054 break;
3055
3056 case R_FRV_GOTTLSDESCLO:
3057 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3058
3059 /* Is this a setlo or setlos instruction? */
3060 if ((insn & (unsigned long)0x01f70000) != 0x00f40000)
3061 {
3062 info->callbacks->einfo
3063 (_("%H: R_FRV_GOTTLSDESCLO"
3064 " not applied to a setlo or setlos instruction\n"),
3065 input_bfd, input_section, rel->r_offset);
3066 return FALSE;
3067 }
3068
3069 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel,
3070 relocation + rel->r_addend)
3071 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)
3072 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)))
3073 {
3074 /* Replace setlo/setlos with a nop. Preserve the
3075 packing bit. */
3076 insn &= (unsigned long)0x80000000;
3077 insn |= (unsigned long)0x00880000;
3078 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3079
3080 /* Nothing to relocate. */
3081 continue;
3082 }
3083
3084 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel))
3085 {
3086 /* If the corresponding sethi (if it exists) decayed
3087 to a nop, make sure this becomes (or already is) a
3088 setlos, not setlo. */
3089 if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))
3090 {
3091 insn |= (unsigned long)0x00080000;
3092 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3093 }
3094
3095 /* Simply decay GOTTLSDESC to GOTTLSOFF. */
3096 r_type = R_FRV_GOTTLSOFFLO;
3097 howto = elf32_frv_howto_table + r_type;
3098 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3099 }
3100
3101 break;
3102
3103 case R_FRV_TLSDESC_RELAX:
3104 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3105
3106 /* Is this an ldd instruction? */
3107 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140)
3108 {
3109 info->callbacks->einfo
3110 (_("%H: R_FRV_TLSDESC_RELAX"
3111 " not applied to an ldd instruction\n"),
3112 input_bfd, input_section, rel->r_offset);
3113 return FALSE;
3114 }
3115
3116 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel,
3117 relocation + rel->r_addend)
3118 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend,
3119 info))
3120 {
3121 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC
3122 with setlos #tlsmofflo(symbol+offset), gr<C+1>.
3123 Preserve the packing bit. */
3124 insn = (insn & (unsigned long)0x80000000)
3125 | ((insn + (unsigned long)0x02000000)
3126 & (unsigned long)0x7e000000);
3127 insn |= (unsigned long)0x00fc0000;
3128 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3129
3130 r_type = R_FRV_TLSMOFFLO;
3131 howto = elf32_frv_howto_table + r_type;
3132 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3133 }
3134
3135 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel,
3136 relocation + rel->r_addend))
3137 {
3138 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC
3139 with sethi #tlsmoffhi(symbol+offset), gr<C+1>.
3140 Preserve the packing bit. */
3141 insn = (insn & (unsigned long)0x80000000)
3142 | ((insn + (unsigned long)0x02000000)
3143 & (unsigned long)0x7e000000);
3144 insn |= (unsigned long)0x00f80000;
3145 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3146
3147 r_type = R_FRV_TLSMOFFHI;
3148 howto = elf32_frv_howto_table + r_type;
3149 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3150 }
3151
3152 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)
3153 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))
3154 {
3155 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC
3156 with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>.
3157 Preserve the packing bit. */
3158 insn = (insn & (unsigned long)0x8003f000)
3159 | (unsigned long)0x00c80000
3160 | ((insn + (unsigned long)0x02000000)
3161 & (unsigned long)0x7e000000);
3162 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3163
3164 r_type = R_FRV_GOTTLSOFF12;
3165 howto = elf32_frv_howto_table + r_type;
3166 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3167 }
3168
3169 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel))
3170 {
3171 /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC
3172 with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>.
3173 Preserve the packing bit. */
3174 insn = (insn & (unsigned long)0x81ffffbf)
3175 | ((insn + (unsigned long)0x02000000)
3176 & (unsigned long)0x7e000000);
3177 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3178
3179 /* #tlsoff(symbol+offset) is just a relaxation
3180 annotation, so there's nothing left to
3181 relocate. */
3182 continue;
3183 }
3184
3185 break;
3186
3187 case R_FRV_GETTLSOFF_RELAX:
3188 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3189
3190 /* Is this a calll or callil instruction? */
3191 if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000)
3192 {
3193 info->callbacks->einfo
3194 (_("%H: R_FRV_GETTLSOFF_RELAX"
3195 " not applied to a calll instruction\n"),
3196 input_bfd, input_section, rel->r_offset);
3197 return FALSE;
3198 }
3199
3200 if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel,
3201 relocation + rel->r_addend)
3202 && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend,
3203 info))
3204 {
3205 /* Replace calll with a nop. Preserve the packing bit. */
3206 insn &= (unsigned long)0x80000000;
3207 insn |= (unsigned long)0x00880000;
3208 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3209
3210 /* Nothing to relocate. */
3211 continue;
3212 }
3213
3214 else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel,
3215 relocation + rel->r_addend))
3216 {
3217 /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9.
3218 Preserve the packing bit. */
3219 insn &= (unsigned long)0x80000000;
3220 insn |= (unsigned long)0x12f40000;
3221 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3222
3223 r_type = R_FRV_TLSMOFFLO;
3224 howto = elf32_frv_howto_table + r_type;
3225 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3226 }
3227
3228 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel))
3229 {
3230 /* Replace calll with a nop. Preserve the packing bit. */
3231 insn &= (unsigned long)0x80000000;
3232 insn |= (unsigned long)0x00880000;
3233 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3234
3235 /* Nothing to relocate. */
3236 continue;
3237 }
3238
3239 break;
3240
3241 case R_FRV_GOTTLSOFF12:
3242 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3243
3244 /* Is this an ldi instruction? */
3245 if ((insn & (unsigned long)0x01fc0000) != 0x00c80000)
3246 {
3247 info->callbacks->einfo
3248 (_("%H: R_FRV_GOTTLSOFF12"
3249 " not applied to an ldi instruction\n"),
3250 input_bfd, input_section, rel->r_offset);
3251 return FALSE;
3252 }
3253
3254 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel,
3255 relocation + rel->r_addend))
3256 {
3257 /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC
3258 with setlos #tlsmofflo(symbol+offset), grC.
3259 Preserve the packing bit. */
3260 insn &= (unsigned long)0xfe000000;
3261 insn |= (unsigned long)0x00fc0000;
3262 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3263
3264 r_type = R_FRV_TLSMOFFLO;
3265 howto = elf32_frv_howto_table + r_type;
3266 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3267 }
3268
3269 break;
3270
3271 case R_FRV_GOTTLSOFFHI:
3272 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3273
3274 /* Is this a sethi instruction? */
3275 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000)
3276 {
3277 info->callbacks->einfo
3278 (_("%H: R_FRV_GOTTLSOFFHI"
3279 " not applied to a sethi instruction\n"),
3280 input_bfd, input_section, rel->r_offset);
3281 return FALSE;
3282 }
3283
3284 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel,
3285 relocation + rel->r_addend)
3286 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)
3287 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)))
3288 {
3289 /* Replace sethi with a nop. Preserve the packing bit. */
3290 insn &= (unsigned long)0x80000000;
3291 insn |= (unsigned long)0x00880000;
3292 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3293
3294 /* Nothing to relocate. */
3295 continue;
3296 }
3297
3298 break;
3299
3300 case R_FRV_GOTTLSOFFLO:
3301 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3302
3303 /* Is this a setlo or setlos instruction? */
3304 if ((insn & (unsigned long)0x01f70000) != 0x00f40000)
3305 {
3306 info->callbacks->einfo
3307 (_("%H: R_FRV_GOTTLSOFFLO"
3308 " not applied to a setlo or setlos instruction\n"),
3309 input_bfd, input_section, rel->r_offset);
3310 return FALSE;
3311 }
3312
3313 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel,
3314 relocation + rel->r_addend)
3315 || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)
3316 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)))
3317 {
3318 /* Replace setlo/setlos with a nop. Preserve the
3319 packing bit. */
3320 insn &= (unsigned long)0x80000000;
3321 insn |= (unsigned long)0x00880000;
3322 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3323
3324 /* Nothing to relocate. */
3325 continue;
3326 }
3327
3328 break;
3329
3330 case R_FRV_TLSOFF_RELAX:
3331 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3332
3333 /* Is this an ld instruction? */
3334 if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100)
3335 {
3336 info->callbacks->einfo
3337 (_("%H: R_FRV_TLSOFF_RELAX"
3338 " not applied to an ld instruction\n"),
3339 input_bfd, input_section, rel->r_offset);
3340 return FALSE;
3341 }
3342
3343 if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel,
3344 relocation + rel->r_addend))
3345 {
3346 /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC
3347 with setlos #tlsmofflo(symbol+offset), grC.
3348 Preserve the packing bit. */
3349 insn &= (unsigned long)0xfe000000;
3350 insn |= (unsigned long)0x00fc0000;
3351 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3352
3353 r_type = R_FRV_TLSMOFFLO;
3354 howto = elf32_frv_howto_table + r_type;
3355 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3356 }
3357
3358 else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)
3359 && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))
3360 {
3361 /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC
3362 with ldi @(grB, #gottlsoff12(symbol+offset), grC.
3363 Preserve the packing bit. */
3364 insn = (insn & (unsigned long)0xfe03f000)
3365 | (unsigned long)0x00c80000;
3366 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3367
3368 r_type = R_FRV_GOTTLSOFF12;
3369 howto = elf32_frv_howto_table + r_type;
3370 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
3371 }
3372
3373 break;
3374
3375 case R_FRV_TLSMOFFHI:
3376 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3377
3378 /* Is this a sethi instruction? */
3379 if ((insn & (unsigned long)0x01ff0000) != 0x00f80000)
3380 {
3381 info->callbacks->einfo
3382 (_("%H: R_FRV_TLSMOFFHI"
3383 " not applied to a sethi instruction\n"),
3384 input_bfd, input_section, rel->r_offset);
3385 return FALSE;
3386 }
3387
3388 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend,
3389 info))
3390 {
3391 /* Replace sethi with a nop. Preserve the packing bit. */
3392 insn &= (unsigned long)0x80000000;
3393 insn |= (unsigned long)0x00880000;
3394 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3395
3396 /* Nothing to relocate. */
3397 continue;
3398 }
3399
3400 break;
3401
3402 case R_FRV_TLSMOFFLO:
3403 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3404
3405 /* Is this a setlo or setlos instruction? */
3406 if ((insn & (unsigned long)0x01f70000) != 0x00f40000)
3407 {
3408 info->callbacks->einfo
3409 (_("R_FRV_TLSMOFFLO"
3410 " not applied to a setlo or setlos instruction\n"),
3411 input_bfd, input_section, rel->r_offset);
3412 return FALSE;
3413 }
3414
3415 if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend,
3416 info))
3417 /* If the corresponding sethi (if it exists) decayed
3418 to a nop, make sure this becomes (or already is) a
3419 setlos, not setlo. */
3420 {
3421 insn |= (unsigned long)0x00080000;
3422 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
3423 }
3424
3425 break;
3426
3427 /*
3428 There's nothing to relax in these:
3429 R_FRV_TLSDESC_VALUE
3430 R_FRV_TLSOFF
3431 R_FRV_TLSMOFF12
3432 R_FRV_TLSMOFFHI
3433 R_FRV_TLSMOFFLO
3434 R_FRV_TLSMOFF
3435 */
3436
3437 default:
3438 break;
3439 }
3440
3441 switch (r_type)
3442 {
3443 case R_FRV_LABEL24:
3444 check_segment[0] = isec_segment;
3445 if (! IS_FDPIC (output_bfd))
3446 check_segment[1] = isec_segment;
3447 else if (picrel->plt)
3448 {
3449 relocation = frvfdpic_plt_section (info)->output_section->vma
3450 + frvfdpic_plt_section (info)->output_offset
3451 + picrel->plt_entry;
3452 check_segment[1] = plt_segment;
3453 }
3454 /* We don't want to warn on calls to undefined weak symbols,
3455 as calls to them must be protected by non-NULL tests
3456 anyway, and unprotected calls would invoke undefined
3457 behavior. */
3458 else if (picrel->symndx == -1
3459 && picrel->d.h->root.type == bfd_link_hash_undefweak)
3460 check_segment[1] = check_segment[0];
3461 else
3462 check_segment[1] = sec
3463 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
3464 : (unsigned)-1;
3465 break;
3466
3467 case R_FRV_GOT12:
3468 case R_FRV_GOTHI:
3469 case R_FRV_GOTLO:
3470 relocation = picrel->got_entry;
3471 check_segment[0] = check_segment[1] = got_segment;
3472 break;
3473
3474 case R_FRV_FUNCDESC_GOT12:
3475 case R_FRV_FUNCDESC_GOTHI:
3476 case R_FRV_FUNCDESC_GOTLO:
3477 relocation = picrel->fdgot_entry;
3478 check_segment[0] = check_segment[1] = got_segment;
3479 break;
3480
3481 case R_FRV_GOTOFFHI:
3482 case R_FRV_GOTOFF12:
3483 case R_FRV_GOTOFFLO:
3484 relocation -= frvfdpic_got_section (info)->output_section->vma
3485 + frvfdpic_got_section (info)->output_offset
3486 + frvfdpic_got_initial_offset (info);
3487 check_segment[0] = got_segment;
3488 check_segment[1] = sec
3489 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
3490 : (unsigned)-1;
3491 break;
3492
3493 case R_FRV_FUNCDESC_GOTOFF12:
3494 case R_FRV_FUNCDESC_GOTOFFHI:
3495 case R_FRV_FUNCDESC_GOTOFFLO:
3496 relocation = picrel->fd_entry;
3497 check_segment[0] = check_segment[1] = got_segment;
3498 break;
3499
3500 case R_FRV_FUNCDESC:
3501 {
3502 int dynindx;
3503 bfd_vma addend = rel->r_addend;
3504
3505 if (! (h && h->root.type == bfd_link_hash_undefweak
3506 && FRVFDPIC_SYM_LOCAL (info, h)))
3507 {
3508 /* If the symbol is dynamic and there may be dynamic
3509 symbol resolution because we are or are linked with a
3510 shared library, emit a FUNCDESC relocation such that
3511 the dynamic linker will allocate the function
3512 descriptor. If the symbol needs a non-local function
3513 descriptor but binds locally (e.g., its visibility is
3514 protected, emit a dynamic relocation decayed to
3515 section+offset. */
3516 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)
3517 && FRVFDPIC_SYM_LOCAL (info, h)
3518 && !(info->executable && !info->pie))
3519 {
3520 dynindx = elf_section_data (h->root.u.def.section
3521 ->output_section)->dynindx;
3522 addend += h->root.u.def.section->output_offset
3523 + h->root.u.def.value;
3524 }
3525 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h))
3526 {
3527 if (addend)
3528 {
3529 info->callbacks->einfo
3530 (_("%H: R_FRV_FUNCDESC references dynamic symbol"
3531 " with nonzero addend\n"),
3532 input_bfd, input_section, rel->r_offset);
3533 return FALSE;
3534 }
3535 dynindx = h->dynindx;
3536 }
3537 else
3538 {
3539 /* Otherwise, we know we have a private function
3540 descriptor, so reference it directly. */
3541 BFD_ASSERT (picrel->privfd);
3542 r_type = R_FRV_32;
3543 dynindx = elf_section_data (frvfdpic_got_section (info)
3544 ->output_section)->dynindx;
3545 addend = frvfdpic_got_section (info)->output_offset
3546 + frvfdpic_got_initial_offset (info)
3547 + picrel->fd_entry;
3548 }
3549
3550 /* If there is room for dynamic symbol resolution, emit
3551 the dynamic relocation. However, if we're linking an
3552 executable at a fixed location, we won't have emitted a
3553 dynamic symbol entry for the got section, so idx will
3554 be zero, which means we can and should compute the
3555 address of the private descriptor ourselves. */
3556 if (info->executable && !info->pie
3557 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h)))
3558 {
3559 addend += frvfdpic_got_section (info)->output_section->vma;
3560 if ((bfd_get_section_flags (output_bfd,
3561 input_section->output_section)
3562 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3563 {
3564 bfd_vma offset;
3565
3566 if (_frvfdpic_osec_readonly_p (output_bfd,
3567 input_section
3568 ->output_section))
3569 {
3570 info->callbacks->einfo
3571 (_("%H: cannot emit fixups"
3572 " in read-only section\n"),
3573 input_bfd, input_section, rel->r_offset);
3574 return FALSE;
3575 }
3576
3577 offset = _bfd_elf_section_offset
3578 (output_bfd, info,
3579 input_section, rel->r_offset);
3580
3581 if (offset != (bfd_vma)-1)
3582 _frvfdpic_add_rofixup (output_bfd,
3583 frvfdpic_gotfixup_section
3584 (info),
3585 offset + input_section
3586 ->output_section->vma
3587 + input_section->output_offset,
3588 picrel);
3589 }
3590 }
3591 else if ((bfd_get_section_flags (output_bfd,
3592 input_section->output_section)
3593 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3594 {
3595 bfd_vma offset;
3596
3597 if (_frvfdpic_osec_readonly_p (output_bfd,
3598 input_section
3599 ->output_section))
3600 {
3601 info->callbacks->einfo
3602 (_("%H: cannot emit dynamic relocations"
3603 " in read-only section\n"),
3604 input_bfd, input_section, rel->r_offset);
3605 return FALSE;
3606 }
3607
3608 offset = _bfd_elf_section_offset
3609 (output_bfd, info,
3610 input_section, rel->r_offset);
3611
3612 if (offset != (bfd_vma)-1)
3613 _frvfdpic_add_dyn_reloc (output_bfd,
3614 frvfdpic_gotrel_section (info),
3615 offset + input_section
3616 ->output_section->vma
3617 + input_section->output_offset,
3618 r_type, dynindx, addend, picrel);
3619 }
3620 else
3621 addend += frvfdpic_got_section (info)->output_section->vma;
3622 }
3623
3624 /* We want the addend in-place because dynamic
3625 relocations are REL. Setting relocation to it should
3626 arrange for it to be installed. */
3627 relocation = addend - rel->r_addend;
3628 }
3629 check_segment[0] = check_segment[1] = got_segment;
3630 break;
3631
3632 case R_FRV_32:
3633 if (! IS_FDPIC (output_bfd))
3634 {
3635 check_segment[0] = check_segment[1] = -1;
3636 break;
3637 }
3638 /* Fall through. */
3639 case R_FRV_FUNCDESC_VALUE:
3640 {
3641 int dynindx;
3642 bfd_vma addend = rel->r_addend;
3643
3644 /* If the symbol is dynamic but binds locally, use
3645 section+offset. */
3646 if (h && ! FRVFDPIC_SYM_LOCAL (info, h))
3647 {
3648 if (addend && r_type == R_FRV_FUNCDESC_VALUE)
3649 {
3650 info->callbacks->einfo
3651 (_("%H: R_FRV_FUNCDESC_VALUE"
3652 " references dynamic symbol with nonzero addend\n"),
3653 input_bfd, input_section, rel->r_offset);
3654 return FALSE;
3655 }
3656 dynindx = h->dynindx;
3657 }
3658 else
3659 {
3660 if (h)
3661 addend += h->root.u.def.value;
3662 else
3663 addend += sym->st_value;
3664 if (osec)
3665 addend += osec->output_offset;
3666 if (osec && osec->output_section
3667 && ! bfd_is_abs_section (osec->output_section)
3668 && ! bfd_is_und_section (osec->output_section))
3669 dynindx = elf_section_data (osec->output_section)->dynindx;
3670 else
3671 dynindx = 0;
3672 }
3673
3674 /* If we're linking an executable at a fixed address, we
3675 can omit the dynamic relocation as long as the symbol
3676 is defined in the current link unit (which is implied
3677 by its output section not being NULL). */
3678 if (info->executable && !info->pie
3679 && (!h || FRVFDPIC_SYM_LOCAL (info, h)))
3680 {
3681 if (osec)
3682 addend += osec->output_section->vma;
3683 if (IS_FDPIC (input_bfd)
3684 && (bfd_get_section_flags (output_bfd,
3685 input_section->output_section)
3686 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3687 {
3688 if (_frvfdpic_osec_readonly_p (output_bfd,
3689 input_section
3690 ->output_section))
3691 {
3692 info->callbacks->einfo
3693 (_("%H: cannot emit fixups in read-only section\n"),
3694 input_bfd, input_section, rel->r_offset);
3695 return FALSE;
3696 }
3697 if (!h || h->root.type != bfd_link_hash_undefweak)
3698 {
3699 bfd_vma offset = _bfd_elf_section_offset
3700 (output_bfd, info,
3701 input_section, rel->r_offset);
3702
3703 if (offset != (bfd_vma)-1)
3704 {
3705 _frvfdpic_add_rofixup (output_bfd,
3706 frvfdpic_gotfixup_section
3707 (info),
3708 offset + input_section
3709 ->output_section->vma
3710 + input_section->output_offset,
3711 picrel);
3712 if (r_type == R_FRV_FUNCDESC_VALUE)
3713 _frvfdpic_add_rofixup
3714 (output_bfd,
3715 frvfdpic_gotfixup_section (info),
3716 offset
3717 + input_section->output_section->vma
3718 + input_section->output_offset + 4, picrel);
3719 }
3720 }
3721 }
3722 }
3723 else
3724 {
3725 if ((bfd_get_section_flags (output_bfd,
3726 input_section->output_section)
3727 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3728 {
3729 bfd_vma offset;
3730
3731 if (_frvfdpic_osec_readonly_p (output_bfd,
3732 input_section
3733 ->output_section))
3734 {
3735 info->callbacks->einfo
3736 (_("%H: cannot emit dynamic relocations"
3737 " in read-only section\n"),
3738 input_bfd, input_section, rel->r_offset);
3739 return FALSE;
3740 }
3741
3742 offset = _bfd_elf_section_offset
3743 (output_bfd, info,
3744 input_section, rel->r_offset);
3745
3746 if (offset != (bfd_vma)-1)
3747 _frvfdpic_add_dyn_reloc (output_bfd,
3748 frvfdpic_gotrel_section (info),
3749 offset + input_section
3750 ->output_section->vma
3751 + input_section->output_offset,
3752 r_type, dynindx, addend, picrel);
3753 }
3754 else if (osec)
3755 addend += osec->output_section->vma;
3756 /* We want the addend in-place because dynamic
3757 relocations are REL. Setting relocation to it
3758 should arrange for it to be installed. */
3759 relocation = addend - rel->r_addend;
3760 }
3761
3762 if (r_type == R_FRV_FUNCDESC_VALUE)
3763 {
3764 /* If we've omitted the dynamic relocation, just emit
3765 the fixed addresses of the symbol and of the local
3766 GOT base offset. */
3767 if (info->executable && !info->pie
3768 && (!h || FRVFDPIC_SYM_LOCAL (info, h)))
3769 bfd_put_32 (output_bfd,
3770 frvfdpic_got_section (info)->output_section->vma
3771 + frvfdpic_got_section (info)->output_offset
3772 + frvfdpic_got_initial_offset (info),
3773 contents + rel->r_offset + 4);
3774 else
3775 /* A function descriptor used for lazy or local
3776 resolving is initialized such that its high word
3777 contains the output section index in which the
3778 PLT entries are located, and the low word
3779 contains the offset of the lazy PLT entry entry
3780 point into that section. */
3781 bfd_put_32 (output_bfd,
3782 h && ! FRVFDPIC_SYM_LOCAL (info, h)
3783 ? 0
3784 : _frvfdpic_osec_to_segment (output_bfd,
3785 sec
3786 ->output_section),
3787 contents + rel->r_offset + 4);
3788 }
3789 }
3790 check_segment[0] = check_segment[1] = got_segment;
3791 break;
3792
3793 case R_FRV_GPREL12:
3794 case R_FRV_GPRELU12:
3795 case R_FRV_GPREL32:
3796 case R_FRV_GPRELHI:
3797 case R_FRV_GPRELLO:
3798 check_segment[0] = gprel_segment;
3799 check_segment[1] = sec
3800 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
3801 : (unsigned)-1;
3802 break;
3803
3804 case R_FRV_GETTLSOFF:
3805 relocation = frvfdpic_plt_section (info)->output_section->vma
3806 + frvfdpic_plt_section (info)->output_offset
3807 + picrel->tlsplt_entry;
3808 BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1
3809 && picrel->tlsdesc_entry);
3810 check_segment[0] = isec_segment;
3811 check_segment[1] = plt_segment;
3812 break;
3813
3814 case R_FRV_GOTTLSDESC12:
3815 case R_FRV_GOTTLSDESCHI:
3816 case R_FRV_GOTTLSDESCLO:
3817 BFD_ASSERT (picrel->tlsdesc_entry);
3818 relocation = picrel->tlsdesc_entry;
3819 check_segment[0] = tls_segment;
3820 check_segment[1] = sec
3821 && ! bfd_is_abs_section (sec)
3822 && ! bfd_is_und_section (sec)
3823 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
3824 : tls_segment;
3825 break;
3826
3827 case R_FRV_TLSMOFF12:
3828 case R_FRV_TLSMOFFHI:
3829 case R_FRV_TLSMOFFLO:
3830 case R_FRV_TLSMOFF:
3831 check_segment[0] = tls_segment;
3832 if (! sec)
3833 check_segment[1] = -1;
3834 else if (bfd_is_abs_section (sec)
3835 || bfd_is_und_section (sec))
3836 {
3837 relocation = 0;
3838 check_segment[1] = tls_segment;
3839 }
3840 else if (sec->output_section)
3841 {
3842 relocation -= tls_biased_base (info);
3843 check_segment[1] =
3844 _frvfdpic_osec_to_segment (output_bfd, sec->output_section);
3845 }
3846 else
3847 check_segment[1] = -1;
3848 break;
3849
3850 case R_FRV_GOTTLSOFF12:
3851 case R_FRV_GOTTLSOFFHI:
3852 case R_FRV_GOTTLSOFFLO:
3853 BFD_ASSERT (picrel->tlsoff_entry);
3854 relocation = picrel->tlsoff_entry;
3855 check_segment[0] = tls_segment;
3856 check_segment[1] = sec
3857 && ! bfd_is_abs_section (sec)
3858 && ! bfd_is_und_section (sec)
3859 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
3860 : tls_segment;
3861 break;
3862
3863 case R_FRV_TLSDESC_VALUE:
3864 case R_FRV_TLSOFF:
3865 /* These shouldn't be present in input object files. */
3866 check_segment[0] = check_segment[1] = isec_segment;
3867 break;
3868
3869 case R_FRV_TLSDESC_RELAX:
3870 case R_FRV_GETTLSOFF_RELAX:
3871 case R_FRV_TLSOFF_RELAX:
3872 /* These are just annotations for relaxation, nothing to do
3873 here. */
3874 continue;
3875
3876 default:
3877 check_segment[0] = isec_segment;
3878 check_segment[1] = sec
3879 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
3880 : (unsigned)-1;
3881 break;
3882 }
3883
3884 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd))
3885 {
3886 /* If you take this out, remove the #error from fdpic-static-6.d
3887 in the ld testsuite. */
3888 /* This helps catch problems in GCC while we can't do more
3889 than static linking. The idea is to test whether the
3890 input file basename is crt0.o only once. */
3891 if (silence_segment_error == 1)
3892 silence_segment_error =
3893 (strlen (input_bfd->filename) == 6
3894 && filename_cmp (input_bfd->filename, "crt0.o") == 0)
3895 || (strlen (input_bfd->filename) > 6
3896 && filename_cmp (input_bfd->filename
3897 + strlen (input_bfd->filename) - 7,
3898 "/crt0.o") == 0)
3899 ? -1 : 0;
3900 if (!silence_segment_error
3901 /* We don't want duplicate errors for undefined
3902 symbols. */
3903 && !(picrel && picrel->symndx == -1
3904 && picrel->d.h->root.type == bfd_link_hash_undefined))
3905 {
3906 info->callbacks->einfo
3907 (_("%H: reloc against `%s' references a different segment\n"),
3908 input_bfd, input_section, rel->r_offset, name);
3909 }
3910 if (!silence_segment_error && (info->shared || info->pie))
3911 return FALSE;
3912 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC;
3913 }
3914
3915 switch (r_type)
3916 {
3917 case R_FRV_GOTOFFHI:
3918 case R_FRV_TLSMOFFHI:
3919 /* We need the addend to be applied before we shift the
3920 value right. */
3921 relocation += rel->r_addend;
3922 /* Fall through. */
3923 case R_FRV_GOTHI:
3924 case R_FRV_FUNCDESC_GOTHI:
3925 case R_FRV_FUNCDESC_GOTOFFHI:
3926 case R_FRV_GOTTLSOFFHI:
3927 case R_FRV_GOTTLSDESCHI:
3928 relocation >>= 16;
3929 /* Fall through. */
3930
3931 case R_FRV_GOTLO:
3932 case R_FRV_FUNCDESC_GOTLO:
3933 case R_FRV_GOTOFFLO:
3934 case R_FRV_FUNCDESC_GOTOFFLO:
3935 case R_FRV_GOTTLSOFFLO:
3936 case R_FRV_GOTTLSDESCLO:
3937 case R_FRV_TLSMOFFLO:
3938 relocation &= 0xffff;
3939 break;
3940
3941 default:
3942 break;
3943 }
3944
3945 switch (r_type)
3946 {
3947 case R_FRV_LABEL24:
3948 if (! IS_FDPIC (output_bfd) || ! picrel->plt)
3949 break;
3950 /* Fall through. */
3951
3952 /* When referencing a GOT entry, a function descriptor or a
3953 PLT, we don't want the addend to apply to the reference,
3954 but rather to the referenced symbol. The actual entry
3955 will have already been created taking the addend into
3956 account, so cancel it out here. */
3957 case R_FRV_GOT12:
3958 case R_FRV_GOTHI:
3959 case R_FRV_GOTLO:
3960 case R_FRV_FUNCDESC_GOT12:
3961 case R_FRV_FUNCDESC_GOTHI:
3962 case R_FRV_FUNCDESC_GOTLO:
3963 case R_FRV_FUNCDESC_GOTOFF12:
3964 case R_FRV_FUNCDESC_GOTOFFHI:
3965 case R_FRV_FUNCDESC_GOTOFFLO:
3966 case R_FRV_GETTLSOFF:
3967 case R_FRV_GOTTLSDESC12:
3968 case R_FRV_GOTTLSDESCHI:
3969 case R_FRV_GOTTLSDESCLO:
3970 case R_FRV_GOTTLSOFF12:
3971 case R_FRV_GOTTLSOFFHI:
3972 case R_FRV_GOTTLSOFFLO:
3973 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12
3974 here, since we do want to apply the addend to the others.
3975 Note that we've applied the addend to GOTOFFHI before we
3976 shifted it right. */
3977 case R_FRV_GOTOFFHI:
3978 case R_FRV_TLSMOFFHI:
3979 relocation -= rel->r_addend;
3980 break;
3981
3982 default:
3983 break;
3984 }
3985
3986 if (r_type == R_FRV_HI16)
3987 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation);
3988
3989 else if (r_type == R_FRV_LO16)
3990 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation);
3991
3992 else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF)
3993 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel,
3994 contents, relocation);
3995
3996 else if (r_type == R_FRV_GPREL12)
3997 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel,
3998 contents, relocation);
3999
4000 else if (r_type == R_FRV_GPRELU12)
4001 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel,
4002 contents, relocation);
4003
4004 else if (r_type == R_FRV_GPRELLO)
4005 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel,
4006 contents, relocation);
4007
4008 else if (r_type == R_FRV_GPRELHI)
4009 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel,
4010 contents, relocation);
4011
4012 else if (r_type == R_FRV_TLSOFF
4013 || r_type == R_FRV_TLSDESC_VALUE)
4014 r = bfd_reloc_notsupported;
4015
4016 else
4017 r = frv_final_link_relocate (howto, input_bfd, input_section, contents,
4018 rel, relocation);
4019
4020 if (r != bfd_reloc_ok)
4021 {
4022 const char * msg = (const char *) NULL;
4023
4024 switch (r)
4025 {
4026 case bfd_reloc_overflow:
4027 r = info->callbacks->reloc_overflow
4028 (info, (h ? &h->root : NULL), name, howto->name,
4029 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4030 break;
4031
4032 case bfd_reloc_undefined:
4033 r = info->callbacks->undefined_symbol
4034 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
4035 break;
4036
4037 case bfd_reloc_outofrange:
4038 msg = _("internal error: out of range error");
4039 break;
4040
4041 case bfd_reloc_notsupported:
4042 msg = _("internal error: unsupported relocation error");
4043 break;
4044
4045 case bfd_reloc_dangerous:
4046 msg = _("internal error: dangerous relocation");
4047 break;
4048
4049 default:
4050 msg = _("internal error: unknown error");
4051 break;
4052 }
4053
4054 if (msg)
4055 {
4056 info->callbacks->einfo
4057 (_("%H: reloc against `%s': %s\n"),
4058 input_bfd, input_section, rel->r_offset, name, msg);
4059 return FALSE;
4060 }
4061
4062 if (! r)
4063 return FALSE;
4064 }
4065 }
4066
4067 return TRUE;
4068 }
4069
4070 /* Return the section that should be marked against GC for a given
4071 relocation. */
4072
4073 static asection *
elf32_frv_gc_mark_hook(asection * sec,struct bfd_link_info * info,Elf_Internal_Rela * rel,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)4074 elf32_frv_gc_mark_hook (asection *sec,
4075 struct bfd_link_info *info,
4076 Elf_Internal_Rela *rel,
4077 struct elf_link_hash_entry *h,
4078 Elf_Internal_Sym *sym)
4079 {
4080 if (h != NULL)
4081 switch (ELF32_R_TYPE (rel->r_info))
4082 {
4083 case R_FRV_GNU_VTINHERIT:
4084 case R_FRV_GNU_VTENTRY:
4085 return NULL;
4086 }
4087
4088 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4089 }
4090
4091 /* Hook called by the linker routine which adds symbols from an object
4092 file. We use it to put .comm items in .scomm, and not .comm. */
4093
4094 static bfd_boolean
elf32_frv_add_symbol_hook(bfd * abfd,struct bfd_link_info * info,Elf_Internal_Sym * sym,const char ** namep ATTRIBUTE_UNUSED,flagword * flagsp ATTRIBUTE_UNUSED,asection ** secp,bfd_vma * valp)4095 elf32_frv_add_symbol_hook (bfd *abfd,
4096 struct bfd_link_info *info,
4097 Elf_Internal_Sym *sym,
4098 const char **namep ATTRIBUTE_UNUSED,
4099 flagword *flagsp ATTRIBUTE_UNUSED,
4100 asection **secp,
4101 bfd_vma *valp)
4102 {
4103 if (sym->st_shndx == SHN_COMMON
4104 && !info->relocatable
4105 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd))
4106 {
4107 /* Common symbols less than or equal to -G nn bytes are
4108 automatically put into .sbss. */
4109
4110 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
4111
4112 if (scomm == NULL)
4113 {
4114 scomm = bfd_make_section_with_flags (abfd, ".scommon",
4115 (SEC_ALLOC
4116 | SEC_IS_COMMON
4117 | SEC_LINKER_CREATED));
4118 if (scomm == NULL)
4119 return FALSE;
4120 }
4121
4122 *secp = scomm;
4123 *valp = sym->st_size;
4124 }
4125
4126 return TRUE;
4127 }
4128
4129 /* We need dynamic symbols for every section, since segments can
4130 relocate independently. */
4131 static bfd_boolean
_frvfdpic_link_omit_section_dynsym(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,asection * p ATTRIBUTE_UNUSED)4132 _frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
4133 struct bfd_link_info *info
4134 ATTRIBUTE_UNUSED,
4135 asection *p ATTRIBUTE_UNUSED)
4136 {
4137 switch (elf_section_data (p)->this_hdr.sh_type)
4138 {
4139 case SHT_PROGBITS:
4140 case SHT_NOBITS:
4141 /* If sh_type is yet undecided, assume it could be
4142 SHT_PROGBITS/SHT_NOBITS. */
4143 case SHT_NULL:
4144 return FALSE;
4145
4146 /* There shouldn't be section relative relocations
4147 against any other section. */
4148 default:
4149 return TRUE;
4150 }
4151 }
4152
4153 /* Create a .got section, as well as its additional info field. This
4154 is almost entirely copied from
4155 elflink.c:_bfd_elf_create_got_section(). */
4156
4157 static bfd_boolean
_frv_create_got_section(bfd * abfd,struct bfd_link_info * info)4158 _frv_create_got_section (bfd *abfd, struct bfd_link_info *info)
4159 {
4160 flagword flags, pltflags;
4161 asection *s;
4162 struct elf_link_hash_entry *h;
4163 struct bfd_link_hash_entry *bh;
4164 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
4165 int ptralign;
4166 int offset;
4167
4168 /* This function may be called more than once. */
4169 s = bfd_get_linker_section (abfd, ".got");
4170 if (s != NULL)
4171 return TRUE;
4172
4173 /* Machine specific: although pointers are 32-bits wide, we want the
4174 GOT to be aligned to a 64-bit boundary, such that function
4175 descriptors in it can be accessed with 64-bit loads and
4176 stores. */
4177 ptralign = 3;
4178
4179 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4180 | SEC_LINKER_CREATED);
4181 pltflags = flags;
4182
4183 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4184 if (s == NULL
4185 || !bfd_set_section_alignment (abfd, s, ptralign))
4186 return FALSE;
4187
4188 if (bed->want_got_plt)
4189 {
4190 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
4191 if (s == NULL
4192 || !bfd_set_section_alignment (abfd, s, ptralign))
4193 return FALSE;
4194 }
4195
4196 if (bed->want_got_sym)
4197 {
4198 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
4199 (or .got.plt) section. We don't do this in the linker script
4200 because we don't want to define the symbol if we are not creating
4201 a global offset table. */
4202 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
4203 elf_hash_table (info)->hgot = h;
4204 if (h == NULL)
4205 return FALSE;
4206
4207 /* Machine-specific: we want the symbol for executables as
4208 well. */
4209 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4210 return FALSE;
4211 }
4212
4213 /* The first bit of the global offset table is the header. */
4214 s->size += bed->got_header_size;
4215
4216 /* This is the machine-specific part. Create and initialize section
4217 data for the got. */
4218 if (IS_FDPIC (abfd))
4219 {
4220 frvfdpic_got_section (info) = s;
4221 frvfdpic_relocs_info (info) = htab_try_create (1,
4222 frvfdpic_relocs_info_hash,
4223 frvfdpic_relocs_info_eq,
4224 (htab_del) NULL);
4225 if (! frvfdpic_relocs_info (info))
4226 return FALSE;
4227
4228 s = bfd_make_section_anyway_with_flags (abfd, ".rel.got",
4229 (flags | SEC_READONLY));
4230 if (s == NULL
4231 || ! bfd_set_section_alignment (abfd, s, 2))
4232 return FALSE;
4233
4234 frvfdpic_gotrel_section (info) = s;
4235
4236 /* Machine-specific. */
4237 s = bfd_make_section_anyway_with_flags (abfd, ".rofixup",
4238 (flags | SEC_READONLY));
4239 if (s == NULL
4240 || ! bfd_set_section_alignment (abfd, s, 2))
4241 return FALSE;
4242
4243 frvfdpic_gotfixup_section (info) = s;
4244 offset = -2048;
4245 flags = BSF_GLOBAL;
4246 }
4247 else
4248 {
4249 offset = 2048;
4250 flags = BSF_GLOBAL | BSF_WEAK;
4251 }
4252
4253 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it
4254 turns out that we're linking with a different linker script, the
4255 linker script will override it. */
4256 bh = NULL;
4257 if (!(_bfd_generic_link_add_one_symbol
4258 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE,
4259 bed->collect, &bh)))
4260 return FALSE;
4261 h = (struct elf_link_hash_entry *) bh;
4262 h->def_regular = 1;
4263 h->type = STT_OBJECT;
4264 /* h->other = STV_HIDDEN; */ /* Should we? */
4265
4266 /* Machine-specific: we want the symbol for executables as well. */
4267 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h))
4268 return FALSE;
4269
4270 if (!IS_FDPIC (abfd))
4271 return TRUE;
4272
4273 /* FDPIC supports Thread Local Storage, and this may require a
4274 procedure linkage table for TLS PLT entries. */
4275
4276 /* This is mostly copied from
4277 elflink.c:_bfd_elf_create_dynamic_sections(). */
4278
4279 flags = pltflags;
4280 pltflags |= SEC_CODE;
4281 if (bed->plt_not_loaded)
4282 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
4283 if (bed->plt_readonly)
4284 pltflags |= SEC_READONLY;
4285
4286 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
4287 if (s == NULL
4288 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
4289 return FALSE;
4290 /* FRV-specific: remember it. */
4291 frvfdpic_plt_section (info) = s;
4292
4293 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
4294 .plt section. */
4295 if (bed->want_plt_sym)
4296 {
4297 h = _bfd_elf_define_linkage_sym (abfd, info, s,
4298 "_PROCEDURE_LINKAGE_TABLE_");
4299 elf_hash_table (info)->hplt = h;
4300 if (h == NULL)
4301 return FALSE;
4302 }
4303
4304 /* FRV-specific: we want rel relocations for the plt. */
4305 s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt",
4306 flags | SEC_READONLY);
4307 if (s == NULL
4308 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
4309 return FALSE;
4310 /* FRV-specific: remember it. */
4311 frvfdpic_pltrel_section (info) = s;
4312
4313 return TRUE;
4314 }
4315
4316 /* Make sure the got and plt sections exist, and that our pointers in
4317 the link hash table point to them. */
4318
4319 static bfd_boolean
elf32_frvfdpic_create_dynamic_sections(bfd * abfd,struct bfd_link_info * info)4320 elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
4321 {
4322 /* This is mostly copied from
4323 elflink.c:_bfd_elf_create_dynamic_sections(). */
4324 flagword flags;
4325 asection *s;
4326 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
4327
4328 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4329 | SEC_LINKER_CREATED);
4330
4331 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4332 .rel[a].bss sections. */
4333
4334 /* FRV-specific: we want to create the GOT and the PLT in the FRV
4335 way. */
4336 if (! _frv_create_got_section (abfd, info))
4337 return FALSE;
4338
4339 /* FRV-specific: make sure we created everything we wanted. */
4340 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info)
4341 && frvfdpic_gotfixup_section (info)
4342 && frvfdpic_plt_section (info)
4343 && frvfdpic_pltrel_section (info));
4344
4345 if (bed->want_dynbss)
4346 {
4347 /* The .dynbss section is a place to put symbols which are defined
4348 by dynamic objects, are referenced by regular objects, and are
4349 not functions. We must allocate space for them in the process
4350 image and use a R_*_COPY reloc to tell the dynamic linker to
4351 initialize them at run time. The linker script puts the .dynbss
4352 section into the .bss section of the final image. */
4353 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
4354 SEC_ALLOC | SEC_LINKER_CREATED);
4355 if (s == NULL)
4356 return FALSE;
4357
4358 /* The .rel[a].bss section holds copy relocs. This section is not
4359 normally needed. We need to create it here, though, so that the
4360 linker will map it to an output section. We can't just create it
4361 only if we need it, because we will not know whether we need it
4362 until we have seen all the input files, and the first time the
4363 main linker code calls BFD after examining all the input files
4364 (size_dynamic_sections) the input sections have already been
4365 mapped to the output sections. If the section turns out not to
4366 be needed, we can discard it later. We will never need this
4367 section when generating a shared object, since they do not use
4368 copy relocs. */
4369 if (! info->shared)
4370 {
4371 s = bfd_make_section_anyway_with_flags (abfd,
4372 (bed->default_use_rela_p
4373 ? ".rela.bss" : ".rel.bss"),
4374 flags | SEC_READONLY);
4375 if (s == NULL
4376 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
4377 return FALSE;
4378 }
4379 }
4380
4381 return TRUE;
4382 }
4383
4384 /* Compute the total GOT and PLT size required by each symbol in each
4385 range. Symbols may require up to 4 words in the GOT: an entry
4386 pointing to the symbol, an entry pointing to its function
4387 descriptor, and a private function descriptors taking two
4388 words. */
4389
4390 static void
_frvfdpic_count_nontls_entries(struct frvfdpic_relocs_info * entry,struct _frvfdpic_dynamic_got_info * dinfo)4391 _frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry,
4392 struct _frvfdpic_dynamic_got_info *dinfo)
4393 {
4394 /* Allocate space for a GOT entry pointing to the symbol. */
4395 if (entry->got12)
4396 dinfo->got12 += 4;
4397 else if (entry->gotlos)
4398 dinfo->gotlos += 4;
4399 else if (entry->gothilo)
4400 dinfo->gothilo += 4;
4401 else
4402 entry->relocs32--;
4403 entry->relocs32++;
4404
4405 /* Allocate space for a GOT entry pointing to the function
4406 descriptor. */
4407 if (entry->fdgot12)
4408 dinfo->got12 += 4;
4409 else if (entry->fdgotlos)
4410 dinfo->gotlos += 4;
4411 else if (entry->fdgothilo)
4412 dinfo->gothilo += 4;
4413 else
4414 entry->relocsfd--;
4415 entry->relocsfd++;
4416
4417 /* Decide whether we need a PLT entry, a function descriptor in the
4418 GOT, and a lazy PLT entry for this symbol. */
4419 entry->plt = entry->call
4420 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
4421 && elf_hash_table (dinfo->info)->dynamic_sections_created;
4422 entry->privfd = entry->plt
4423 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo
4424 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo)
4425 && (entry->symndx != -1
4426 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)));
4427 entry->lazyplt = entry->privfd
4428 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
4429 && ! (dinfo->info->flags & DF_BIND_NOW)
4430 && elf_hash_table (dinfo->info)->dynamic_sections_created;
4431
4432 /* Allocate space for a function descriptor. */
4433 if (entry->fdgoff12)
4434 dinfo->fd12 += 8;
4435 else if (entry->fdgofflos)
4436 dinfo->fdlos += 8;
4437 else if (entry->privfd && entry->plt)
4438 dinfo->fdplt += 8;
4439 else if (entry->privfd)
4440 dinfo->fdhilo += 8;
4441 else
4442 entry->relocsfdv--;
4443 entry->relocsfdv++;
4444
4445 if (entry->lazyplt)
4446 dinfo->lzplt += 8;
4447 }
4448
4449 /* Compute the total GOT size required by each TLS symbol in each
4450 range. Symbols may require up to 5 words in the GOT: an entry
4451 holding the TLS offset for the symbol, and an entry with a full TLS
4452 descriptor taking 4 words. */
4453
4454 static void
_frvfdpic_count_tls_entries(struct frvfdpic_relocs_info * entry,struct _frvfdpic_dynamic_got_info * dinfo,bfd_boolean subtract)4455 _frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry,
4456 struct _frvfdpic_dynamic_got_info *dinfo,
4457 bfd_boolean subtract)
4458 {
4459 const int l = subtract ? -1 : 1;
4460
4461 /* Allocate space for a GOT entry with the TLS offset of the
4462 symbol. */
4463 if (entry->tlsoff12)
4464 dinfo->got12 += 4 * l;
4465 else if (entry->tlsofflos)
4466 dinfo->gotlos += 4 * l;
4467 else if (entry->tlsoffhilo)
4468 dinfo->gothilo += 4 * l;
4469 else
4470 entry->relocstlsoff -= l;
4471 entry->relocstlsoff += l;
4472
4473 /* If there's any TLSOFF relocation, mark the output file as not
4474 suitable for dlopening. This mark will remain even if we relax
4475 all such relocations, but this is not a problem, since we'll only
4476 do so for executables, and we definitely don't want anyone
4477 dlopening executables. */
4478 if (entry->relocstlsoff)
4479 dinfo->info->flags |= DF_STATIC_TLS;
4480
4481 /* Allocate space for a TLS descriptor. */
4482 if (entry->tlsdesc12)
4483 dinfo->tlsd12 += 8 * l;
4484 else if (entry->tlsdesclos)
4485 dinfo->tlsdlos += 8 * l;
4486 else if (entry->tlsplt)
4487 dinfo->tlsdplt += 8 * l;
4488 else if (entry->tlsdeschilo)
4489 dinfo->tlsdhilo += 8 * l;
4490 else
4491 entry->relocstlsd -= l;
4492 entry->relocstlsd += l;
4493 }
4494
4495 /* Compute the number of dynamic relocations and fixups that a symbol
4496 requires, and add (or subtract) from the grand and per-symbol
4497 totals. */
4498
4499 static void
_frvfdpic_count_relocs_fixups(struct frvfdpic_relocs_info * entry,struct _frvfdpic_dynamic_got_info * dinfo,bfd_boolean subtract)4500 _frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry,
4501 struct _frvfdpic_dynamic_got_info *dinfo,
4502 bfd_boolean subtract)
4503 {
4504 bfd_vma relocs = 0, fixups = 0, tlsrets = 0;
4505
4506 if (!dinfo->info->executable || dinfo->info->pie)
4507 {
4508 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv
4509 + entry->relocstlsd;
4510
4511 /* In the executable, TLS relocations to symbols that bind
4512 locally (including those that resolve to global TLS offsets)
4513 are resolved immediately, without any need for fixups or
4514 dynamic relocations. In shared libraries, however, we must
4515 emit dynamic relocations even for local symbols, because we
4516 don't know the module id the library is going to get at
4517 run-time, nor its TLS base offset. */
4518 if (!dinfo->info->executable
4519 || (entry->symndx == -1
4520 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)))
4521 relocs += entry->relocstlsoff;
4522 }
4523 else
4524 {
4525 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))
4526 {
4527 if (entry->symndx != -1
4528 || entry->d.h->root.type != bfd_link_hash_undefweak)
4529 fixups += entry->relocs32 + 2 * entry->relocsfdv;
4530 fixups += entry->relocstlsd;
4531 tlsrets += entry->relocstlsd;
4532 }
4533 else
4534 {
4535 relocs += entry->relocs32 + entry->relocsfdv
4536 + entry->relocstlsoff + entry->relocstlsd;
4537 }
4538
4539 if (entry->symndx != -1
4540 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))
4541 {
4542 if (entry->symndx != -1
4543 || entry->d.h->root.type != bfd_link_hash_undefweak)
4544 fixups += entry->relocsfd;
4545 }
4546 else
4547 relocs += entry->relocsfd;
4548 }
4549
4550 if (subtract)
4551 {
4552 relocs = - relocs;
4553 fixups = - fixups;
4554 tlsrets = - tlsrets;
4555 }
4556
4557 entry->dynrelocs += relocs;
4558 entry->fixups += fixups;
4559 dinfo->relocs += relocs;
4560 dinfo->fixups += fixups;
4561 dinfo->tls_ret_refs += tlsrets;
4562 }
4563
4564 /* Look for opportunities to relax TLS relocations. We can assume
4565 we're linking the main executable or a static-tls library, since
4566 otherwise we wouldn't have got here. When relaxing, we have to
4567 first undo any previous accounting of TLS uses of fixups, dynamic
4568 relocations, GOT and PLT entries. */
4569
4570 static void
_frvfdpic_relax_tls_entries(struct frvfdpic_relocs_info * entry,struct _frvfdpic_dynamic_got_info * dinfo,bfd_boolean relaxing)4571 _frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry,
4572 struct _frvfdpic_dynamic_got_info *dinfo,
4573 bfd_boolean relaxing)
4574 {
4575 bfd_boolean changed = ! relaxing;
4576
4577 BFD_ASSERT (dinfo->info->executable
4578 || (dinfo->info->flags & DF_STATIC_TLS));
4579
4580 if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo)
4581 {
4582 if (! changed)
4583 {
4584 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE);
4585 _frvfdpic_count_tls_entries (entry, dinfo, TRUE);
4586 changed = TRUE;
4587 }
4588
4589 /* When linking an executable, we can always decay GOTTLSDESC to
4590 TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise.
4591 When linking a static-tls shared library, using TLSMOFF is
4592 not an option, but we can still use GOTTLSOFF. When decaying
4593 to GOTTLSOFF, we must keep the GOT entry in range. We know
4594 it has to fit because we'll be trading the 4 words of hte TLS
4595 descriptor for a single word in the same range. */
4596 if (! dinfo->info->executable
4597 || (entry->symndx == -1
4598 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)))
4599 {
4600 entry->tlsoff12 |= entry->tlsdesc12;
4601 entry->tlsofflos |= entry->tlsdesclos;
4602 entry->tlsoffhilo |= entry->tlsdeschilo;
4603 }
4604
4605 entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0;
4606 }
4607
4608 /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the
4609 main executable. We have to check whether the symbol's TLSOFF is
4610 in range for a setlos. For symbols with a hash entry, we can
4611 determine exactly what to do; for others locals, we don't have
4612 addresses handy, so we use the size of the TLS section as an
4613 approximation. If we get it wrong, we'll retain a GOT entry
4614 holding the TLS offset (without dynamic relocations or fixups),
4615 but we'll still optimize away the loads from it. Since TLS sizes
4616 are generally very small, it's probably not worth attempting to
4617 do better than this. */
4618 if ((entry->tlsplt
4619 || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo)
4620 && dinfo->info->executable && relaxing
4621 && ((entry->symndx == -1
4622 && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
4623 /* The above may hold for an undefweak TLS symbol, so make
4624 sure we don't have this case before accessing def.value
4625 and def.section. */
4626 && (entry->d.h->root.type == bfd_link_hash_undefweak
4627 || (bfd_vma)(entry->d.h->root.u.def.value
4628 + (entry->d.h->root.u.def.section
4629 ->output_section->vma)
4630 + entry->d.h->root.u.def.section->output_offset
4631 + entry->addend
4632 - tls_biased_base (dinfo->info)
4633 + 32768) < (bfd_vma)65536))
4634 || (entry->symndx != -1
4635 && (elf_hash_table (dinfo->info)->tls_sec->size
4636 + abs (entry->addend) < 32768 + FRVFDPIC_TLS_BIAS))))
4637 {
4638 if (! changed)
4639 {
4640 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE);
4641 _frvfdpic_count_tls_entries (entry, dinfo, TRUE);
4642 changed = TRUE;
4643 }
4644
4645 entry->tlsplt =
4646 entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0;
4647 }
4648
4649 /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already
4650 have a #gottlsoff12 relocation for this entry, or if we can fit
4651 one more in the 12-bit (and 16-bit) ranges. */
4652 if (entry->tlsplt
4653 && (entry->tlsoff12
4654 || (relaxing
4655 && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4
4656 && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12
4657 + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos
4658 <= 65536 - 12 - 4))))
4659 {
4660 if (! changed)
4661 {
4662 _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE);
4663 _frvfdpic_count_tls_entries (entry, dinfo, TRUE);
4664 changed = TRUE;
4665 }
4666
4667 entry->tlsoff12 = 1;
4668 entry->tlsplt = 0;
4669 }
4670
4671 if (changed)
4672 {
4673 _frvfdpic_count_tls_entries (entry, dinfo, FALSE);
4674 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE);
4675 }
4676
4677 return;
4678 }
4679
4680 /* Compute the total GOT and PLT size required by each symbol in each range. *
4681 Symbols may require up to 4 words in the GOT: an entry pointing to
4682 the symbol, an entry pointing to its function descriptor, and a
4683 private function descriptors taking two words. */
4684
4685 static int
_frvfdpic_count_got_plt_entries(void ** entryp,void * dinfo_)4686 _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_)
4687 {
4688 struct frvfdpic_relocs_info *entry = *entryp;
4689 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_;
4690
4691 _frvfdpic_count_nontls_entries (entry, dinfo);
4692
4693 if (dinfo->info->executable || (dinfo->info->flags & DF_STATIC_TLS))
4694 _frvfdpic_relax_tls_entries (entry, dinfo, FALSE);
4695 else
4696 {
4697 _frvfdpic_count_tls_entries (entry, dinfo, FALSE);
4698 _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE);
4699 }
4700
4701 return 1;
4702 }
4703
4704 /* Determine the positive and negative ranges to be used by each
4705 offset range in the GOT. FDCUR and CUR, that must be aligned to a
4706 double-word boundary, are the minimum (negative) and maximum
4707 (positive) GOT offsets already used by previous ranges, except for
4708 an ODD entry that may have been left behind. GOT and FD indicate
4709 the size of GOT entries and function descriptors that must be
4710 placed within the range from -WRAP to WRAP. If there's room left,
4711 up to FDPLT bytes should be reserved for additional function
4712 descriptors. */
4713
4714 inline static bfd_signed_vma
_frvfdpic_compute_got_alloc_data(struct _frvfdpic_dynamic_got_alloc_data * gad,bfd_signed_vma fdcur,bfd_signed_vma odd,bfd_signed_vma cur,bfd_vma got,bfd_vma fd,bfd_vma fdplt,bfd_vma tlsd,bfd_vma tlsdplt,bfd_vma wrap)4715 _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad,
4716 bfd_signed_vma fdcur,
4717 bfd_signed_vma odd,
4718 bfd_signed_vma cur,
4719 bfd_vma got,
4720 bfd_vma fd,
4721 bfd_vma fdplt,
4722 bfd_vma tlsd,
4723 bfd_vma tlsdplt,
4724 bfd_vma wrap)
4725 {
4726 bfd_signed_vma wrapmin = -wrap;
4727 const bfd_vma tdescsz = 8;
4728
4729 /* Start at the given initial points. */
4730 gad->fdcur = fdcur;
4731 gad->cur = cur;
4732
4733 /* If we had an incoming odd word and we have any got entries that
4734 are going to use it, consume it, otherwise leave gad->odd at
4735 zero. We might force gad->odd to zero and return the incoming
4736 odd such that it is used by the next range, but then GOT entries
4737 might appear to be out of order and we wouldn't be able to
4738 shorten the GOT by one word if it turns out to end with an
4739 unpaired GOT entry. */
4740 if (odd && got)
4741 {
4742 gad->odd = odd;
4743 got -= 4;
4744 odd = 0;
4745 }
4746 else
4747 gad->odd = 0;
4748
4749 /* If we're left with an unpaired GOT entry, compute its location
4750 such that we can return it. Otherwise, if got doesn't require an
4751 odd number of words here, either odd was already zero in the
4752 block above, or it was set to zero because got was non-zero, or
4753 got was already zero. In the latter case, we want the value of
4754 odd to carry over to the return statement, so we don't want to
4755 reset odd unless the condition below is true. */
4756 if (got & 4)
4757 {
4758 odd = cur + got;
4759 got += 4;
4760 }
4761
4762 /* Compute the tentative boundaries of this range. */
4763 gad->max = cur + got;
4764 gad->min = fdcur - fd;
4765 gad->fdplt = 0;
4766
4767 /* If function descriptors took too much space, wrap some of them
4768 around. */
4769 if (gad->min < wrapmin)
4770 {
4771 gad->max += wrapmin - gad->min;
4772 gad->tmin = gad->min = wrapmin;
4773 }
4774
4775 /* If GOT entries took too much space, wrap some of them around.
4776 This may well cause gad->min to become lower than wrapmin. This
4777 will cause a relocation overflow later on, so we don't have to
4778 report it here . */
4779 if ((bfd_vma) gad->max > wrap)
4780 {
4781 gad->min -= gad->max - wrap;
4782 gad->max = wrap;
4783 }
4784
4785 /* Add TLS descriptors. */
4786 gad->tmax = gad->max + tlsd;
4787 gad->tmin = gad->min;
4788 gad->tlsdplt = 0;
4789
4790 /* If TLS descriptors took too much space, wrap an integral number
4791 of them around. */
4792 if ((bfd_vma) gad->tmax > wrap)
4793 {
4794 bfd_vma wrapsize = gad->tmax - wrap;
4795
4796 wrapsize += tdescsz / 2;
4797 wrapsize &= ~ tdescsz / 2;
4798
4799 gad->tmin -= wrapsize;
4800 gad->tmax -= wrapsize;
4801 }
4802
4803 /* If there is space left and we have function descriptors
4804 referenced in PLT entries that could take advantage of shorter
4805 offsets, place them now. */
4806 if (fdplt && gad->tmin > wrapmin)
4807 {
4808 bfd_vma fds;
4809
4810 if ((bfd_vma) (gad->tmin - wrapmin) < fdplt)
4811 fds = gad->tmin - wrapmin;
4812 else
4813 fds = fdplt;
4814
4815 fdplt -= fds;
4816 gad->min -= fds;
4817 gad->tmin -= fds;
4818 gad->fdplt += fds;
4819 }
4820
4821 /* If there is more space left, try to place some more function
4822 descriptors for PLT entries. */
4823 if (fdplt && (bfd_vma) gad->tmax < wrap)
4824 {
4825 bfd_vma fds;
4826
4827 if ((bfd_vma) (wrap - gad->tmax) < fdplt)
4828 fds = wrap - gad->tmax;
4829 else
4830 fds = fdplt;
4831
4832 fdplt -= fds;
4833 gad->max += fds;
4834 gad->tmax += fds;
4835 gad->fdplt += fds;
4836 }
4837
4838 /* If there is space left and we have TLS descriptors referenced in
4839 PLT entries that could take advantage of shorter offsets, place
4840 them now. */
4841 if (tlsdplt && gad->tmin > wrapmin)
4842 {
4843 bfd_vma tlsds;
4844
4845 if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt)
4846 tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2);
4847 else
4848 tlsds = tlsdplt;
4849
4850 tlsdplt -= tlsds;
4851 gad->tmin -= tlsds;
4852 gad->tlsdplt += tlsds;
4853 }
4854
4855 /* If there is more space left, try to place some more TLS
4856 descriptors for PLT entries. Although we could try to fit an
4857 additional TLS descriptor with half of it just before before the
4858 wrap point and another right past the wrap point, this might
4859 cause us to run out of space for the next region, so don't do
4860 it. */
4861 if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2)
4862 {
4863 bfd_vma tlsds;
4864
4865 if ((bfd_vma) (wrap - gad->tmax) < tlsdplt)
4866 tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2);
4867 else
4868 tlsds = tlsdplt;
4869
4870 tlsdplt -= tlsds;
4871 gad->tmax += tlsds;
4872 gad->tlsdplt += tlsds;
4873 }
4874
4875 /* If odd was initially computed as an offset past the wrap point,
4876 wrap it around. */
4877 if (odd > gad->max)
4878 odd = gad->min + odd - gad->max;
4879
4880 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed
4881 before returning, so do it here too. This guarantees that,
4882 should cur and fdcur meet at the wrap point, they'll both be
4883 equal to min. */
4884 if (gad->cur == gad->max)
4885 gad->cur = gad->min;
4886
4887 /* Ditto for _frvfdpic_get_tlsdesc_entry(). */
4888 gad->tcur = gad->max;
4889 if (gad->tcur == gad->tmax)
4890 gad->tcur = gad->tmin;
4891
4892 return odd;
4893 }
4894
4895 /* Compute the location of the next GOT entry, given the allocation
4896 data for a range. */
4897
4898 inline static bfd_signed_vma
_frvfdpic_get_got_entry(struct _frvfdpic_dynamic_got_alloc_data * gad)4899 _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad)
4900 {
4901 bfd_signed_vma ret;
4902
4903 if (gad->odd)
4904 {
4905 /* If there was an odd word left behind, use it. */
4906 ret = gad->odd;
4907 gad->odd = 0;
4908 }
4909 else
4910 {
4911 /* Otherwise, use the word pointed to by cur, reserve the next
4912 as an odd word, and skip to the next pair of words, possibly
4913 wrapping around. */
4914 ret = gad->cur;
4915 gad->odd = gad->cur + 4;
4916 gad->cur += 8;
4917 if (gad->cur == gad->max)
4918 gad->cur = gad->min;
4919 }
4920
4921 return ret;
4922 }
4923
4924 /* Compute the location of the next function descriptor entry in the
4925 GOT, given the allocation data for a range. */
4926
4927 inline static bfd_signed_vma
_frvfdpic_get_fd_entry(struct _frvfdpic_dynamic_got_alloc_data * gad)4928 _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad)
4929 {
4930 /* If we're at the bottom, wrap around, and only then allocate the
4931 next pair of words. */
4932 if (gad->fdcur == gad->min)
4933 gad->fdcur = gad->max;
4934 return gad->fdcur -= 8;
4935 }
4936
4937 /* Compute the location of the next TLS descriptor entry in the GOT,
4938 given the allocation data for a range. */
4939 inline static bfd_signed_vma
_frvfdpic_get_tlsdesc_entry(struct _frvfdpic_dynamic_got_alloc_data * gad)4940 _frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad)
4941 {
4942 bfd_signed_vma ret;
4943
4944 ret = gad->tcur;
4945
4946 gad->tcur += 8;
4947
4948 /* If we're at the top of the region, wrap around to the bottom. */
4949 if (gad->tcur == gad->tmax)
4950 gad->tcur = gad->tmin;
4951
4952 return ret;
4953 }
4954
4955 /* Assign GOT offsets for every GOT entry and function descriptor.
4956 Doing everything in a single pass is tricky. */
4957
4958 static int
_frvfdpic_assign_got_entries(void ** entryp,void * info_)4959 _frvfdpic_assign_got_entries (void **entryp, void *info_)
4960 {
4961 struct frvfdpic_relocs_info *entry = *entryp;
4962 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_;
4963
4964 if (entry->got12)
4965 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12);
4966 else if (entry->gotlos)
4967 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos);
4968 else if (entry->gothilo)
4969 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo);
4970
4971 if (entry->fdgot12)
4972 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12);
4973 else if (entry->fdgotlos)
4974 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos);
4975 else if (entry->fdgothilo)
4976 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo);
4977
4978 if (entry->fdgoff12)
4979 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12);
4980 else if (entry->plt && dinfo->got12.fdplt)
4981 {
4982 dinfo->got12.fdplt -= 8;
4983 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12);
4984 }
4985 else if (entry->fdgofflos)
4986 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos);
4987 else if (entry->plt && dinfo->gotlos.fdplt)
4988 {
4989 dinfo->gotlos.fdplt -= 8;
4990 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos);
4991 }
4992 else if (entry->plt)
4993 {
4994 dinfo->gothilo.fdplt -= 8;
4995 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo);
4996 }
4997 else if (entry->privfd)
4998 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo);
4999
5000 if (entry->tlsoff12)
5001 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12);
5002 else if (entry->tlsofflos)
5003 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos);
5004 else if (entry->tlsoffhilo)
5005 entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo);
5006
5007 if (entry->tlsdesc12)
5008 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12);
5009 else if (entry->tlsplt && dinfo->got12.tlsdplt)
5010 {
5011 dinfo->got12.tlsdplt -= 8;
5012 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12);
5013 }
5014 else if (entry->tlsdesclos)
5015 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos);
5016 else if (entry->tlsplt && dinfo->gotlos.tlsdplt)
5017 {
5018 dinfo->gotlos.tlsdplt -= 8;
5019 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos);
5020 }
5021 else if (entry->tlsplt)
5022 {
5023 dinfo->gothilo.tlsdplt -= 8;
5024 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo);
5025 }
5026 else if (entry->tlsdeschilo)
5027 entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo);
5028
5029 return 1;
5030 }
5031
5032 /* Assign GOT offsets to private function descriptors used by PLT
5033 entries (or referenced by 32-bit offsets), as well as PLT entries
5034 and lazy PLT entries. */
5035
5036 static int
_frvfdpic_assign_plt_entries(void ** entryp,void * info_)5037 _frvfdpic_assign_plt_entries (void **entryp, void *info_)
5038 {
5039 struct frvfdpic_relocs_info *entry = *entryp;
5040 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_;
5041
5042 if (entry->privfd)
5043 BFD_ASSERT (entry->fd_entry);
5044
5045 if (entry->plt)
5046 {
5047 int size;
5048
5049 /* We use the section's raw size to mark the location of the
5050 next PLT entry. */
5051 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size;
5052
5053 /* Figure out the length of this PLT entry based on the
5054 addressing mode we need to reach the function descriptor. */
5055 BFD_ASSERT (entry->fd_entry);
5056 if (entry->fd_entry >= -(1 << (12 - 1))
5057 && entry->fd_entry < (1 << (12 - 1)))
5058 size = 8;
5059 else if (entry->fd_entry >= -(1 << (16 - 1))
5060 && entry->fd_entry < (1 << (16 - 1)))
5061 size = 12;
5062 else
5063 size = 16;
5064
5065 frvfdpic_plt_section (dinfo->g.info)->size += size;
5066 }
5067
5068 if (entry->lazyplt)
5069 {
5070 entry->lzplt_entry = dinfo->g.lzplt;
5071 dinfo->g.lzplt += 8;
5072 /* If this entry is the one that gets the resolver stub, account
5073 for the additional instruction. */
5074 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE
5075 == FRVFDPIC_LZPLT_RESOLV_LOC)
5076 dinfo->g.lzplt += 4;
5077 }
5078
5079 if (entry->tlsplt)
5080 {
5081 int size;
5082
5083 entry->tlsplt_entry
5084 = frvfdpic_plt_section (dinfo->g.info)->size;
5085
5086 if (dinfo->g.info->executable
5087 && (entry->symndx != -1
5088 || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h)))
5089 {
5090 if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1))
5091 /* FIXME: here we use the size of the TLS section
5092 as an upper bound for the value of the TLS
5093 symbol, because we may not know the exact value
5094 yet. If we get it wrong, we'll just waste a
5095 word in the PLT, and we should never get even
5096 close to 32 KiB of TLS anyway. */
5097 && elf_hash_table (dinfo->g.info)->tls_sec
5098 && (elf_hash_table (dinfo->g.info)->tls_sec->size
5099 + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1))))
5100 size = 8;
5101 else
5102 size = 12;
5103 }
5104 else if (entry->tlsoff_entry)
5105 {
5106 if (entry->tlsoff_entry >= -(1 << (12 - 1))
5107 && entry->tlsoff_entry < (1 << (12 - 1)))
5108 size = 8;
5109 else if (entry->tlsoff_entry >= -(1 << (16 - 1))
5110 && entry->tlsoff_entry < (1 << (16 - 1)))
5111 size = 12;
5112 else
5113 size = 16;
5114 }
5115 else
5116 {
5117 BFD_ASSERT (entry->tlsdesc_entry);
5118
5119 if (entry->tlsdesc_entry >= -(1 << (12 - 1))
5120 && entry->tlsdesc_entry < (1 << (12 - 1)))
5121 size = 8;
5122 else if (entry->tlsdesc_entry >= -(1 << (16 - 1))
5123 && entry->tlsdesc_entry < (1 << (16 - 1)))
5124 size = 12;
5125 else
5126 size = 16;
5127 }
5128
5129 frvfdpic_plt_section (dinfo->g.info)->size += size;
5130 }
5131
5132 return 1;
5133 }
5134
5135 /* Cancel out any effects of calling _frvfdpic_assign_got_entries and
5136 _frvfdpic_assign_plt_entries. */
5137
5138 static int
_frvfdpic_reset_got_plt_entries(void ** entryp,void * ignore ATTRIBUTE_UNUSED)5139 _frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED)
5140 {
5141 struct frvfdpic_relocs_info *entry = *entryp;
5142
5143 entry->got_entry = 0;
5144 entry->fdgot_entry = 0;
5145 entry->fd_entry = 0;
5146 entry->plt_entry = (bfd_vma)-1;
5147 entry->lzplt_entry = (bfd_vma)-1;
5148 entry->tlsoff_entry = 0;
5149 entry->tlsdesc_entry = 0;
5150 entry->tlsplt_entry = (bfd_vma)-1;
5151
5152 return 1;
5153 }
5154
5155 /* Follow indirect and warning hash entries so that each got entry
5156 points to the final symbol definition. P must point to a pointer
5157 to the hash table we're traversing. Since this traversal may
5158 modify the hash table, we set this pointer to NULL to indicate
5159 we've made a potentially-destructive change to the hash table, so
5160 the traversal must be restarted. */
5161 static int
_frvfdpic_resolve_final_relocs_info(void ** entryp,void * p)5162 _frvfdpic_resolve_final_relocs_info (void **entryp, void *p)
5163 {
5164 struct frvfdpic_relocs_info *entry = *entryp;
5165 htab_t *htab = p;
5166
5167 if (entry->symndx == -1)
5168 {
5169 struct elf_link_hash_entry *h = entry->d.h;
5170 struct frvfdpic_relocs_info *oentry;
5171
5172 while (h->root.type == bfd_link_hash_indirect
5173 || h->root.type == bfd_link_hash_warning)
5174 h = (struct elf_link_hash_entry *)h->root.u.i.link;
5175
5176 if (entry->d.h == h)
5177 return 1;
5178
5179 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend,
5180 NO_INSERT);
5181
5182 if (oentry)
5183 {
5184 /* Merge the two entries. */
5185 frvfdpic_pic_merge_early_relocs_info (oentry, entry);
5186 htab_clear_slot (*htab, entryp);
5187 return 1;
5188 }
5189
5190 entry->d.h = h;
5191
5192 /* If we can't find this entry with the new bfd hash, re-insert
5193 it, and get the traversal restarted. */
5194 if (! htab_find (*htab, entry))
5195 {
5196 htab_clear_slot (*htab, entryp);
5197 entryp = htab_find_slot (*htab, entry, INSERT);
5198 if (! *entryp)
5199 *entryp = entry;
5200 /* Abort the traversal, since the whole table may have
5201 moved, and leave it up to the parent to restart the
5202 process. */
5203 *(htab_t *)p = NULL;
5204 return 0;
5205 }
5206 }
5207
5208 return 1;
5209 }
5210
5211 /* Compute the total size of the GOT, the PLT, the dynamic relocations
5212 section and the rofixup section. Assign locations for GOT and PLT
5213 entries. */
5214
5215 static bfd_boolean
_frvfdpic_size_got_plt(bfd * output_bfd,struct _frvfdpic_dynamic_got_plt_info * gpinfop)5216 _frvfdpic_size_got_plt (bfd *output_bfd,
5217 struct _frvfdpic_dynamic_got_plt_info *gpinfop)
5218 {
5219 bfd_signed_vma odd;
5220 bfd_vma limit, tlslimit;
5221 struct bfd_link_info *info = gpinfop->g.info;
5222 bfd *dynobj = elf_hash_table (info)->dynobj;
5223
5224 memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g,
5225 sizeof (gpinfop->g));
5226
5227 odd = 12;
5228 /* Compute the total size taken by entries in the 12-bit and 16-bit
5229 ranges, to tell how many PLT function descriptors we can bring
5230 into the 12-bit range without causing the 16-bit range to
5231 overflow. */
5232 limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos
5233 + gpinfop->g.fd12 + gpinfop->g.fdlos
5234 + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos;
5235 if (limit < (bfd_vma)1 << 16)
5236 limit = ((bfd_vma)1 << 16) - limit;
5237 else
5238 limit = 0;
5239 if (gpinfop->g.fdplt < limit)
5240 {
5241 tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8;
5242 limit = gpinfop->g.fdplt;
5243 }
5244 else
5245 tlslimit = 0;
5246 if (gpinfop->g.tlsdplt < tlslimit)
5247 tlslimit = gpinfop->g.tlsdplt;
5248
5249 /* Determine the ranges of GOT offsets that we can use for each
5250 range of addressing modes. */
5251 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12,
5252 0,
5253 odd,
5254 16,
5255 gpinfop->g.got12,
5256 gpinfop->g.fd12,
5257 limit,
5258 gpinfop->g.tlsd12,
5259 tlslimit,
5260 (bfd_vma)1 << (12-1));
5261 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos,
5262 gpinfop->got12.tmin,
5263 odd,
5264 gpinfop->got12.tmax,
5265 gpinfop->g.gotlos,
5266 gpinfop->g.fdlos,
5267 gpinfop->g.fdplt
5268 - gpinfop->got12.fdplt,
5269 gpinfop->g.tlsdlos,
5270 gpinfop->g.tlsdplt
5271 - gpinfop->got12.tlsdplt,
5272 (bfd_vma)1 << (16-1));
5273 odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo,
5274 gpinfop->gotlos.tmin,
5275 odd,
5276 gpinfop->gotlos.tmax,
5277 gpinfop->g.gothilo,
5278 gpinfop->g.fdhilo,
5279 gpinfop->g.fdplt
5280 - gpinfop->got12.fdplt
5281 - gpinfop->gotlos.fdplt,
5282 gpinfop->g.tlsdhilo,
5283 gpinfop->g.tlsdplt
5284 - gpinfop->got12.tlsdplt
5285 - gpinfop->gotlos.tlsdplt,
5286 (bfd_vma)1 << (32-1));
5287
5288 /* Now assign (most) GOT offsets. */
5289 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries,
5290 gpinfop);
5291
5292 frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax
5293 - gpinfop->gothilo.tmin
5294 /* If an odd word is the last word of the GOT, we don't need this
5295 word to be part of the GOT. */
5296 - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0);
5297 if (frvfdpic_got_section (info)->size == 0)
5298 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE;
5299 else if (frvfdpic_got_section (info)->size == 12
5300 && ! elf_hash_table (info)->dynamic_sections_created)
5301 {
5302 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE;
5303 frvfdpic_got_section (info)->size = 0;
5304 }
5305 /* This will be non-NULL during relaxation. The assumption is that
5306 the size of one of these sections will never grow, only shrink,
5307 so we can use the larger buffer we allocated before. */
5308 else if (frvfdpic_got_section (info)->contents == NULL)
5309 {
5310 frvfdpic_got_section (info)->contents =
5311 (bfd_byte *) bfd_zalloc (dynobj,
5312 frvfdpic_got_section (info)->size);
5313 if (frvfdpic_got_section (info)->contents == NULL)
5314 return FALSE;
5315 }
5316
5317 if (frvfdpic_gotrel_section (info))
5318 /* Subtract the number of lzplt entries, since those will generate
5319 relocations in the pltrel section. */
5320 frvfdpic_gotrel_section (info)->size =
5321 (gpinfop->g.relocs - gpinfop->g.lzplt / 8)
5322 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
5323 else
5324 BFD_ASSERT (gpinfop->g.relocs == 0);
5325 if (frvfdpic_gotrel_section (info)->size == 0)
5326 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE;
5327 else if (frvfdpic_gotrel_section (info)->contents == NULL)
5328 {
5329 frvfdpic_gotrel_section (info)->contents =
5330 (bfd_byte *) bfd_zalloc (dynobj,
5331 frvfdpic_gotrel_section (info)->size);
5332 if (frvfdpic_gotrel_section (info)->contents == NULL)
5333 return FALSE;
5334 }
5335
5336 frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4;
5337 if (frvfdpic_gotfixup_section (info)->size == 0)
5338 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE;
5339 else if (frvfdpic_gotfixup_section (info)->contents == NULL)
5340 {
5341 frvfdpic_gotfixup_section (info)->contents =
5342 (bfd_byte *) bfd_zalloc (dynobj,
5343 frvfdpic_gotfixup_section (info)->size);
5344 if (frvfdpic_gotfixup_section (info)->contents == NULL)
5345 return FALSE;
5346 }
5347
5348 if (frvfdpic_pltrel_section (info))
5349 {
5350 frvfdpic_pltrel_section (info)->size =
5351 gpinfop->g.lzplt / 8
5352 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
5353 if (frvfdpic_pltrel_section (info)->size == 0)
5354 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE;
5355 else if (frvfdpic_pltrel_section (info)->contents == NULL)
5356 {
5357 frvfdpic_pltrel_section (info)->contents =
5358 (bfd_byte *) bfd_zalloc (dynobj,
5359 frvfdpic_pltrel_section (info)->size);
5360 if (frvfdpic_pltrel_section (info)->contents == NULL)
5361 return FALSE;
5362 }
5363 }
5364
5365 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
5366 such that there's room for the additional instruction needed to
5367 call the resolver. Since _frvfdpic_assign_got_entries didn't
5368 account for them, our block size is 4 bytes smaller than the real
5369 block size. */
5370 if (frvfdpic_plt_section (info))
5371 {
5372 frvfdpic_plt_section (info)->size = gpinfop->g.lzplt
5373 + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8)
5374 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4);
5375 }
5376
5377 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to
5378 actually assign lazy PLT entries addresses. */
5379 gpinfop->g.lzplt = 0;
5380
5381 /* Save information that we're going to need to generate GOT and PLT
5382 entries. */
5383 frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin;
5384
5385 if (get_elf_backend_data (output_bfd)->want_got_sym)
5386 elf_hash_table (info)->hgot->root.u.def.value
5387 = frvfdpic_got_initial_offset (info);
5388
5389 if (frvfdpic_plt_section (info))
5390 frvfdpic_plt_initial_offset (info) =
5391 frvfdpic_plt_section (info)->size;
5392
5393 /* Allocate a ret statement at plt_initial_offset, to be used by
5394 locally-resolved TLS descriptors. */
5395 if (gpinfop->g.tls_ret_refs)
5396 frvfdpic_plt_section (info)->size += 4;
5397
5398 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries,
5399 gpinfop);
5400
5401 /* Allocate the PLT section contents only after
5402 _frvfdpic_assign_plt_entries has a chance to add the size of the
5403 non-lazy PLT entries. */
5404 if (frvfdpic_plt_section (info))
5405 {
5406 if (frvfdpic_plt_section (info)->size == 0)
5407 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE;
5408 else if (frvfdpic_plt_section (info)->contents == NULL)
5409 {
5410 frvfdpic_plt_section (info)->contents =
5411 (bfd_byte *) bfd_zalloc (dynobj,
5412 frvfdpic_plt_section (info)->size);
5413 if (frvfdpic_plt_section (info)->contents == NULL)
5414 return FALSE;
5415 }
5416 }
5417
5418 return TRUE;
5419 }
5420
5421 /* Set the sizes of the dynamic sections. */
5422
5423 static bfd_boolean
elf32_frvfdpic_size_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)5424 elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd,
5425 struct bfd_link_info *info)
5426 {
5427 bfd *dynobj;
5428 asection *s;
5429 struct _frvfdpic_dynamic_got_plt_info gpinfo;
5430
5431 dynobj = elf_hash_table (info)->dynobj;
5432 BFD_ASSERT (dynobj != NULL);
5433
5434 if (elf_hash_table (info)->dynamic_sections_created)
5435 {
5436 /* Set the contents of the .interp section to the interpreter. */
5437 if (info->executable)
5438 {
5439 s = bfd_get_linker_section (dynobj, ".interp");
5440 BFD_ASSERT (s != NULL);
5441 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5442 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
5443 }
5444 }
5445
5446 memset (&gpinfo, 0, sizeof (gpinfo));
5447 gpinfo.g.info = info;
5448
5449 for (;;)
5450 {
5451 htab_t relocs = frvfdpic_relocs_info (info);
5452
5453 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs);
5454
5455 if (relocs == frvfdpic_relocs_info (info))
5456 break;
5457 }
5458
5459 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries,
5460 &gpinfo.g);
5461
5462 /* Allocate space to save the summary information, we're going to
5463 use it if we're doing relaxations. */
5464 frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g));
5465
5466 if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo))
5467 return FALSE;
5468
5469 if (elf_hash_table (info)->dynamic_sections_created)
5470 {
5471 if (frvfdpic_got_section (info)->size)
5472 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0))
5473 return FALSE;
5474
5475 if (frvfdpic_pltrel_section (info)->size)
5476 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
5477 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL)
5478 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
5479 return FALSE;
5480
5481 if (frvfdpic_gotrel_section (info)->size)
5482 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0)
5483 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0)
5484 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT,
5485 sizeof (Elf32_External_Rel)))
5486 return FALSE;
5487 }
5488
5489 return TRUE;
5490 }
5491
5492 static bfd_boolean
elf32_frvfdpic_always_size_sections(bfd * output_bfd,struct bfd_link_info * info)5493 elf32_frvfdpic_always_size_sections (bfd *output_bfd,
5494 struct bfd_link_info *info)
5495 {
5496 if (!info->relocatable
5497 && !bfd_elf_stack_segment_size (output_bfd, info,
5498 "__stacksize", DEFAULT_STACK_SIZE))
5499 return FALSE;
5500
5501 return TRUE;
5502 }
5503
5504 /* Check whether any of the relocations was optimized away, and
5505 subtract it from the relocation or fixup count. */
5506 static bfd_boolean
_frvfdpic_check_discarded_relocs(bfd * abfd,asection * sec,struct bfd_link_info * info,bfd_boolean * changed)5507 _frvfdpic_check_discarded_relocs (bfd *abfd, asection *sec,
5508 struct bfd_link_info *info,
5509
5510 bfd_boolean *changed)
5511 {
5512 Elf_Internal_Shdr *symtab_hdr;
5513 struct elf_link_hash_entry **sym_hashes;
5514 Elf_Internal_Rela *rel, *erel;
5515
5516 if ((sec->flags & SEC_RELOC) == 0
5517 || sec->reloc_count == 0)
5518 return TRUE;
5519
5520 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5521 sym_hashes = elf_sym_hashes (abfd);
5522
5523 rel = elf_section_data (sec)->relocs;
5524
5525 /* Now examine each relocation. */
5526 for (erel = rel + sec->reloc_count; rel < erel; rel++)
5527 {
5528 struct elf_link_hash_entry *h;
5529 unsigned long r_symndx;
5530 struct frvfdpic_relocs_info *picrel;
5531 struct _frvfdpic_dynamic_got_info *dinfo;
5532
5533 if (ELF32_R_TYPE (rel->r_info) != R_FRV_32
5534 && ELF32_R_TYPE (rel->r_info) != R_FRV_FUNCDESC)
5535 continue;
5536
5537 if (_bfd_elf_section_offset (sec->output_section->owner,
5538 info, sec, rel->r_offset)
5539 != (bfd_vma)-1)
5540 continue;
5541
5542 r_symndx = ELF32_R_SYM (rel->r_info);
5543 if (r_symndx < symtab_hdr->sh_info)
5544 h = NULL;
5545 else
5546 {
5547 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5548 while (h->root.type == bfd_link_hash_indirect
5549 || h->root.type == bfd_link_hash_warning)
5550 h = (struct elf_link_hash_entry *)h->root.u.i.link;
5551 }
5552
5553 if (h != NULL)
5554 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info),
5555 abfd, h,
5556 rel->r_addend, NO_INSERT);
5557 else
5558 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info (info),
5559 abfd, r_symndx,
5560 rel->r_addend, NO_INSERT);
5561
5562 if (! picrel)
5563 return FALSE;
5564
5565 *changed = TRUE;
5566 dinfo = frvfdpic_dynamic_got_plt_info (info);
5567
5568 _frvfdpic_count_relocs_fixups (picrel, dinfo, TRUE);
5569 if (ELF32_R_TYPE (rel->r_info) == R_FRV_32)
5570 picrel->relocs32--;
5571 else /* we know (ELF32_R_TYPE (rel->r_info) == R_FRV_FUNCDESC) */
5572 picrel->relocsfd--;
5573 _frvfdpic_count_relocs_fixups (picrel, dinfo, FALSE);
5574 }
5575
5576 return TRUE;
5577 }
5578
5579 static bfd_boolean
frvfdpic_elf_discard_info(bfd * ibfd,struct elf_reloc_cookie * cookie ATTRIBUTE_UNUSED,struct bfd_link_info * info)5580 frvfdpic_elf_discard_info (bfd *ibfd,
5581 struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED,
5582 struct bfd_link_info *info)
5583 {
5584 bfd_boolean changed = FALSE;
5585 asection *s;
5586 bfd *obfd = NULL;
5587
5588 /* Account for relaxation of .eh_frame section. */
5589 for (s = ibfd->sections; s; s = s->next)
5590 if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
5591 {
5592 if (!_frvfdpic_check_discarded_relocs (ibfd, s, info, &changed))
5593 return FALSE;
5594 obfd = s->output_section->owner;
5595 }
5596
5597 if (changed)
5598 {
5599 struct _frvfdpic_dynamic_got_plt_info gpinfo;
5600
5601 memset (&gpinfo, 0, sizeof (gpinfo));
5602 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info),
5603 sizeof (gpinfo.g));
5604
5605 /* Clear GOT and PLT assignments. */
5606 htab_traverse (frvfdpic_relocs_info (info),
5607 _frvfdpic_reset_got_plt_entries,
5608 NULL);
5609
5610 if (!_frvfdpic_size_got_plt (obfd, &gpinfo))
5611 return FALSE;
5612 }
5613
5614 return TRUE;
5615 }
5616
5617 /* Look for opportunities to relax TLS relocations. We can assume
5618 we're linking the main executable or a static-tls library, since
5619 otherwise we wouldn't have got here. */
5620
5621 static int
_frvfdpic_relax_got_plt_entries(void ** entryp,void * dinfo_)5622 _frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_)
5623 {
5624 struct frvfdpic_relocs_info *entry = *entryp;
5625 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_;
5626
5627 _frvfdpic_relax_tls_entries (entry, dinfo, TRUE);
5628
5629 return 1;
5630 }
5631
5632 static bfd_boolean
elf32_frvfdpic_relax_section(bfd * abfd ATTRIBUTE_UNUSED,asection * sec,struct bfd_link_info * info,bfd_boolean * again)5633 elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
5634 struct bfd_link_info *info, bfd_boolean *again)
5635 {
5636 struct _frvfdpic_dynamic_got_plt_info gpinfo;
5637
5638 if (info->relocatable)
5639 (*info->callbacks->einfo)
5640 (_("%P%F: --relax and -r may not be used together\n"));
5641
5642 /* If we return early, we didn't change anything. */
5643 *again = FALSE;
5644
5645 /* We'll do our thing when requested to relax the GOT section. */
5646 if (sec != frvfdpic_got_section (info))
5647 return TRUE;
5648
5649 /* We can only relax when linking the main executable or a library
5650 that can't be dlopened. */
5651 if (! info->executable && ! (info->flags & DF_STATIC_TLS))
5652 return TRUE;
5653
5654 /* If there isn't a TLS section for this binary, we can't do
5655 anything about its TLS relocations (it probably doesn't have
5656 any. */
5657 if (elf_hash_table (info)->tls_sec == NULL)
5658 return TRUE;
5659
5660 memset (&gpinfo, 0, sizeof (gpinfo));
5661 memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g));
5662
5663 /* Now look for opportunities to relax, adjusting the GOT usage
5664 as needed. */
5665 htab_traverse (frvfdpic_relocs_info (info),
5666 _frvfdpic_relax_got_plt_entries,
5667 &gpinfo.g);
5668
5669 /* If we changed anything, reset and re-assign GOT and PLT entries. */
5670 if (memcmp (frvfdpic_dynamic_got_plt_info (info),
5671 &gpinfo.g, sizeof (gpinfo.g)) != 0)
5672 {
5673 /* Clear GOT and PLT assignments. */
5674 htab_traverse (frvfdpic_relocs_info (info),
5675 _frvfdpic_reset_got_plt_entries,
5676 NULL);
5677
5678 /* The owner of the TLS section is the output bfd. There should
5679 be a better way to get to it. */
5680 if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner,
5681 &gpinfo))
5682 return FALSE;
5683
5684 /* Repeat until we don't make any further changes. We could fail to
5685 introduce changes in a round if, for example, the 12-bit range is
5686 full, but we later release some space by getting rid of TLS
5687 descriptors in it. We have to repeat the whole process because
5688 we might have changed the size of a section processed before this
5689 one. */
5690 *again = TRUE;
5691 }
5692
5693 return TRUE;
5694 }
5695
5696 /* Fill in code and data in dynamic sections. */
5697
5698 static bfd_boolean
elf32_frv_finish_dynamic_sections(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED)5699 elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5700 struct bfd_link_info *info ATTRIBUTE_UNUSED)
5701 {
5702 /* Nothing to be done for non-FDPIC. */
5703 return TRUE;
5704 }
5705
5706 static bfd_boolean
elf32_frvfdpic_finish_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)5707 elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd,
5708 struct bfd_link_info *info)
5709 {
5710 bfd *dynobj;
5711 asection *sdyn;
5712
5713 dynobj = elf_hash_table (info)->dynobj;
5714
5715 if (frvfdpic_dynamic_got_plt_info (info))
5716 {
5717 BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0);
5718 }
5719 if (frvfdpic_got_section (info))
5720 {
5721 BFD_ASSERT (frvfdpic_gotrel_section (info)->size
5722 == (frvfdpic_gotrel_section (info)->reloc_count
5723 * sizeof (Elf32_External_Rel)));
5724
5725 if (frvfdpic_gotfixup_section (info))
5726 {
5727 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
5728 bfd_vma got_value = hgot->root.u.def.value
5729 + hgot->root.u.def.section->output_section->vma
5730 + hgot->root.u.def.section->output_offset;
5731 struct bfd_link_hash_entry *hend;
5732
5733 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info),
5734 got_value, 0);
5735
5736 if (frvfdpic_gotfixup_section (info)->size
5737 != (frvfdpic_gotfixup_section (info)->reloc_count * 4))
5738 {
5739 error:
5740 info->callbacks->einfo
5741 ("LINKER BUG: .rofixup section size mismatch\n");
5742 return FALSE;
5743 }
5744
5745 hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__",
5746 FALSE, FALSE, TRUE);
5747 if (hend
5748 && (hend->type == bfd_link_hash_defined
5749 || hend->type == bfd_link_hash_defweak)
5750 && hend->u.def.section->output_section != NULL)
5751 {
5752 bfd_vma value =
5753 frvfdpic_gotfixup_section (info)->output_section->vma
5754 + frvfdpic_gotfixup_section (info)->output_offset
5755 + frvfdpic_gotfixup_section (info)->size
5756 - hend->u.def.section->output_section->vma
5757 - hend->u.def.section->output_offset;
5758 BFD_ASSERT (hend->u.def.value == value);
5759 if (hend->u.def.value != value)
5760 goto error;
5761 }
5762 }
5763 }
5764 if (frvfdpic_pltrel_section (info))
5765 {
5766 BFD_ASSERT (frvfdpic_pltrel_section (info)->size
5767 == (frvfdpic_pltrel_section (info)->reloc_count
5768 * sizeof (Elf32_External_Rel)));
5769 }
5770
5771
5772 if (elf_hash_table (info)->dynamic_sections_created)
5773 {
5774 Elf32_External_Dyn * dyncon;
5775 Elf32_External_Dyn * dynconend;
5776
5777 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5778
5779 BFD_ASSERT (sdyn != NULL);
5780
5781 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5782 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5783
5784 for (; dyncon < dynconend; dyncon++)
5785 {
5786 Elf_Internal_Dyn dyn;
5787
5788 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5789
5790 switch (dyn.d_tag)
5791 {
5792 default:
5793 break;
5794
5795 case DT_PLTGOT:
5796 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma
5797 + frvfdpic_got_section (info)->output_offset
5798 + frvfdpic_got_initial_offset (info);
5799 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5800 break;
5801
5802 case DT_JMPREL:
5803 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info)
5804 ->output_section->vma
5805 + frvfdpic_pltrel_section (info)->output_offset;
5806 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5807 break;
5808
5809 case DT_PLTRELSZ:
5810 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size;
5811 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5812 break;
5813 }
5814 }
5815 }
5816
5817 return TRUE;
5818 }
5819
5820 /* Adjust a symbol defined by a dynamic object and referenced by a
5821 regular object. */
5822
5823 static bfd_boolean
elf32_frvfdpic_adjust_dynamic_symbol(struct bfd_link_info * info ATTRIBUTE_UNUSED,struct elf_link_hash_entry * h ATTRIBUTE_UNUSED)5824 elf32_frvfdpic_adjust_dynamic_symbol
5825 (struct bfd_link_info *info ATTRIBUTE_UNUSED,
5826 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
5827 {
5828 bfd * dynobj;
5829
5830 dynobj = elf_hash_table (info)->dynobj;
5831
5832 /* Make sure we know what is going on here. */
5833 BFD_ASSERT (dynobj != NULL
5834 && (h->u.weakdef != NULL
5835 || (h->def_dynamic
5836 && h->ref_regular
5837 && !h->def_regular)));
5838
5839 /* If this is a weak symbol, and there is a real definition, the
5840 processor independent code will have arranged for us to see the
5841 real definition first, and we can just use the same value. */
5842 if (h->u.weakdef != NULL)
5843 {
5844 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5845 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5846 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5847 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5848 }
5849
5850 return TRUE;
5851 }
5852
5853 /* Perform any actions needed for dynamic symbols. */
5854
5855 static bfd_boolean
elf32_frvfdpic_finish_dynamic_symbol(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,struct elf_link_hash_entry * h ATTRIBUTE_UNUSED,Elf_Internal_Sym * sym ATTRIBUTE_UNUSED)5856 elf32_frvfdpic_finish_dynamic_symbol
5857 (bfd *output_bfd ATTRIBUTE_UNUSED,
5858 struct bfd_link_info *info ATTRIBUTE_UNUSED,
5859 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED,
5860 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5861 {
5862 return TRUE;
5863 }
5864
5865 /* Decide whether to attempt to turn absptr or lsda encodings in
5866 shared libraries into pcrel within the given input section. */
5867
5868 static bfd_boolean
frvfdpic_elf_use_relative_eh_frame(bfd * input_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,asection * eh_frame_section ATTRIBUTE_UNUSED)5869 frvfdpic_elf_use_relative_eh_frame
5870 (bfd *input_bfd ATTRIBUTE_UNUSED,
5871 struct bfd_link_info *info ATTRIBUTE_UNUSED,
5872 asection *eh_frame_section ATTRIBUTE_UNUSED)
5873 {
5874 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
5875 return FALSE;
5876 }
5877
5878 /* Adjust the contents of an eh_frame_hdr section before they're output. */
5879
5880 static bfd_byte
frvfdpic_elf_encode_eh_address(bfd * abfd,struct bfd_link_info * info,asection * osec,bfd_vma offset,asection * loc_sec,bfd_vma loc_offset,bfd_vma * encoded)5881 frvfdpic_elf_encode_eh_address (bfd *abfd,
5882 struct bfd_link_info *info,
5883 asection *osec, bfd_vma offset,
5884 asection *loc_sec, bfd_vma loc_offset,
5885 bfd_vma *encoded)
5886 {
5887 struct elf_link_hash_entry *h;
5888
5889 h = elf_hash_table (info)->hgot;
5890 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
5891
5892 if (! h || (_frvfdpic_osec_to_segment (abfd, osec)
5893 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section)))
5894 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
5895 loc_sec, loc_offset, encoded);
5896
5897 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec)
5898 == (_frvfdpic_osec_to_segment
5899 (abfd, h->root.u.def.section->output_section)));
5900
5901 *encoded = osec->vma + offset
5902 - (h->root.u.def.value
5903 + h->root.u.def.section->output_section->vma
5904 + h->root.u.def.section->output_offset);
5905
5906 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
5907 }
5908
5909 /* Look through the relocs for a section during the first phase.
5910
5911 Besides handling virtual table relocs for gc, we have to deal with
5912 all sorts of PIC-related relocations. We describe below the
5913 general plan on how to handle such relocations, even though we only
5914 collect information at this point, storing them in hash tables for
5915 perusal of later passes.
5916
5917 32 relocations are propagated to the linker output when creating
5918 position-independent output. LO16 and HI16 relocations are not
5919 supposed to be encountered in this case.
5920
5921 LABEL16 should always be resolvable by the linker, since it's only
5922 used by branches.
5923
5924 LABEL24, on the other hand, is used by calls. If it turns out that
5925 the target of a call is a dynamic symbol, a PLT entry must be
5926 created for it, which triggers the creation of a private function
5927 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
5928
5929 GPREL relocations require the referenced symbol to be in the same
5930 segment as _gp, but this can only be checked later.
5931
5932 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
5933 exist. LABEL24 might as well, since it may require a PLT entry,
5934 that will require a got.
5935
5936 Non-FUNCDESC GOT relocations require a GOT entry to be created
5937 regardless of whether the symbol is dynamic. However, since a
5938 global symbol that turns out to not be exported may have the same
5939 address of a non-dynamic symbol, we don't assign GOT entries at
5940 this point, such that we can share them in this case. A relocation
5941 for the GOT entry always has to be created, be it to offset a
5942 private symbol by the section load address, be it to get the symbol
5943 resolved dynamically.
5944
5945 FUNCDESC GOT relocations require a GOT entry to be created, and
5946 handled as if a FUNCDESC relocation was applied to the GOT entry in
5947 an object file.
5948
5949 FUNCDESC relocations referencing a symbol that turns out to NOT be
5950 dynamic cause a private function descriptor to be created. The
5951 FUNCDESC relocation then decays to a 32 relocation that points at
5952 the private descriptor. If the symbol is dynamic, the FUNCDESC
5953 relocation is propagated to the linker output, such that the
5954 dynamic linker creates the canonical descriptor, pointing to the
5955 dynamically-resolved definition of the function.
5956
5957 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
5958 symbols that are assigned to the same segment as the GOT, but we
5959 can only check this later, after we know the complete set of
5960 symbols defined and/or exported.
5961
5962 FUNCDESC GOTOFF relocations require a function descriptor to be
5963 created and, unless lazy binding is disabled or the symbol is not
5964 dynamic, a lazy PLT entry. Since we can't tell at this point
5965 whether a symbol is going to be dynamic, we have to decide later
5966 whether to create a lazy PLT entry or bind the descriptor directly
5967 to the private function.
5968
5969 FUNCDESC_VALUE relocations are not supposed to be present in object
5970 files, but they may very well be simply propagated to the linker
5971 output, since they have no side effect.
5972
5973
5974 A function descriptor always requires a FUNCDESC_VALUE relocation.
5975 Whether it's in .plt.rel or not depends on whether lazy binding is
5976 enabled and on whether the referenced symbol is dynamic.
5977
5978 The existence of a lazy PLT requires the resolverStub lazy PLT
5979 entry to be present.
5980
5981
5982 As for assignment of GOT, PLT and lazy PLT entries, and private
5983 descriptors, we might do them all sequentially, but we can do
5984 better than that. For example, we can place GOT entries and
5985 private function descriptors referenced using 12-bit operands
5986 closer to the PIC register value, such that these relocations don't
5987 overflow. Those that are only referenced with LO16 relocations
5988 could come next, but we may as well place PLT-required function
5989 descriptors in the 12-bit range to make them shorter. Symbols
5990 referenced with LO16/HI16 may come next, but we may place
5991 additional function descriptors in the 16-bit range if we can
5992 reliably tell that we've already placed entries that are ever
5993 referenced with only LO16. PLT entries are therefore generated as
5994 small as possible, while not introducing relocation overflows in
5995 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
5996 generated before or after PLT entries, but not intermingled with
5997 them, such that we can have more lazy PLT entries in range for a
5998 branch to the resolverStub. The resolverStub should be emitted at
5999 the most distant location from the first lazy PLT entry such that
6000 it's still in range for a branch, or closer, if there isn't a need
6001 for so many lazy PLT entries. Additional lazy PLT entries may be
6002 emitted after the resolverStub, as long as branches are still in
6003 range. If the branch goes out of range, longer lazy PLT entries
6004 are emitted.
6005
6006 We could further optimize PLT and lazy PLT entries by giving them
6007 priority in assignment to closer-to-gr17 locations depending on the
6008 number of occurrences of references to them (assuming a function
6009 that's called more often is more important for performance, so its
6010 PLT entry should be faster), or taking hints from the compiler.
6011 Given infinite time and money... :-) */
6012
6013 static bfd_boolean
elf32_frv_check_relocs(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)6014 elf32_frv_check_relocs (bfd *abfd,
6015 struct bfd_link_info *info,
6016 asection *sec,
6017 const Elf_Internal_Rela *relocs)
6018 {
6019 Elf_Internal_Shdr *symtab_hdr;
6020 struct elf_link_hash_entry **sym_hashes;
6021 const Elf_Internal_Rela *rel;
6022 const Elf_Internal_Rela *rel_end;
6023 bfd *dynobj;
6024 struct frvfdpic_relocs_info *picrel;
6025
6026 if (info->relocatable)
6027 return TRUE;
6028
6029 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6030 sym_hashes = elf_sym_hashes (abfd);
6031
6032 dynobj = elf_hash_table (info)->dynobj;
6033 rel_end = relocs + sec->reloc_count;
6034 for (rel = relocs; rel < rel_end; rel++)
6035 {
6036 struct elf_link_hash_entry *h;
6037 unsigned long r_symndx;
6038
6039 r_symndx = ELF32_R_SYM (rel->r_info);
6040 if (r_symndx < symtab_hdr->sh_info)
6041 h = NULL;
6042 else
6043 {
6044 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6045 while (h->root.type == bfd_link_hash_indirect
6046 || h->root.type == bfd_link_hash_warning)
6047 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6048
6049 /* PR15323, ref flags aren't set for references in the same
6050 object. */
6051 h->root.non_ir_ref = 1;
6052 }
6053
6054 switch (ELF32_R_TYPE (rel->r_info))
6055 {
6056 case R_FRV_GETTLSOFF:
6057 case R_FRV_TLSDESC_VALUE:
6058 case R_FRV_GOTTLSDESC12:
6059 case R_FRV_GOTTLSDESCHI:
6060 case R_FRV_GOTTLSDESCLO:
6061 case R_FRV_GOTTLSOFF12:
6062 case R_FRV_GOTTLSOFFHI:
6063 case R_FRV_GOTTLSOFFLO:
6064 case R_FRV_TLSOFF:
6065 case R_FRV_GOT12:
6066 case R_FRV_GOTHI:
6067 case R_FRV_GOTLO:
6068 case R_FRV_FUNCDESC_GOT12:
6069 case R_FRV_FUNCDESC_GOTHI:
6070 case R_FRV_FUNCDESC_GOTLO:
6071 case R_FRV_GOTOFF12:
6072 case R_FRV_GOTOFFHI:
6073 case R_FRV_GOTOFFLO:
6074 case R_FRV_FUNCDESC_GOTOFF12:
6075 case R_FRV_FUNCDESC_GOTOFFHI:
6076 case R_FRV_FUNCDESC_GOTOFFLO:
6077 case R_FRV_FUNCDESC:
6078 case R_FRV_FUNCDESC_VALUE:
6079 case R_FRV_TLSMOFF12:
6080 case R_FRV_TLSMOFFHI:
6081 case R_FRV_TLSMOFFLO:
6082 case R_FRV_TLSMOFF:
6083 if (! IS_FDPIC (abfd))
6084 goto bad_reloc;
6085 /* Fall through. */
6086 case R_FRV_GPREL12:
6087 case R_FRV_GPRELU12:
6088 case R_FRV_GPRELHI:
6089 case R_FRV_GPRELLO:
6090 case R_FRV_LABEL24:
6091 case R_FRV_32:
6092 if (! dynobj)
6093 {
6094 elf_hash_table (info)->dynobj = dynobj = abfd;
6095 if (! _frv_create_got_section (abfd, info))
6096 return FALSE;
6097 }
6098 if (! IS_FDPIC (abfd))
6099 {
6100 picrel = NULL;
6101 break;
6102 }
6103 if (h != NULL)
6104 {
6105 if (h->dynindx == -1)
6106 switch (ELF_ST_VISIBILITY (h->other))
6107 {
6108 case STV_INTERNAL:
6109 case STV_HIDDEN:
6110 break;
6111 default:
6112 bfd_elf_link_record_dynamic_symbol (info, h);
6113 break;
6114 }
6115 picrel
6116 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info),
6117 abfd, h,
6118 rel->r_addend, INSERT);
6119 }
6120 else
6121 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info
6122 (info), abfd, r_symndx,
6123 rel->r_addend, INSERT);
6124 if (! picrel)
6125 return FALSE;
6126 break;
6127
6128 default:
6129 picrel = NULL;
6130 break;
6131 }
6132
6133 switch (ELF32_R_TYPE (rel->r_info))
6134 {
6135 case R_FRV_LABEL24:
6136 if (IS_FDPIC (abfd))
6137 picrel->call = 1;
6138 break;
6139
6140 case R_FRV_FUNCDESC_VALUE:
6141 picrel->relocsfdv++;
6142 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
6143 picrel->relocs32--;
6144 /* Fall through. */
6145
6146 case R_FRV_32:
6147 if (! IS_FDPIC (abfd))
6148 break;
6149
6150 picrel->sym = 1;
6151 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
6152 picrel->relocs32++;
6153 break;
6154
6155 case R_FRV_GOT12:
6156 picrel->got12 = 1;
6157 break;
6158
6159 case R_FRV_GOTHI:
6160 case R_FRV_GOTLO:
6161 picrel->gothilo = 1;
6162 break;
6163
6164 case R_FRV_FUNCDESC_GOT12:
6165 picrel->fdgot12 = 1;
6166 break;
6167
6168 case R_FRV_FUNCDESC_GOTHI:
6169 case R_FRV_FUNCDESC_GOTLO:
6170 picrel->fdgothilo = 1;
6171 break;
6172
6173 case R_FRV_GOTOFF12:
6174 case R_FRV_GOTOFFHI:
6175 case R_FRV_GOTOFFLO:
6176 picrel->gotoff = 1;
6177 break;
6178
6179 case R_FRV_FUNCDESC_GOTOFF12:
6180 picrel->fdgoff12 = 1;
6181 break;
6182
6183 case R_FRV_FUNCDESC_GOTOFFHI:
6184 case R_FRV_FUNCDESC_GOTOFFLO:
6185 picrel->fdgoffhilo = 1;
6186 break;
6187
6188 case R_FRV_FUNCDESC:
6189 picrel->fd = 1;
6190 picrel->relocsfd++;
6191 break;
6192
6193 case R_FRV_GETTLSOFF:
6194 picrel->tlsplt = 1;
6195 break;
6196
6197 case R_FRV_TLSDESC_VALUE:
6198 picrel->relocstlsd++;
6199 goto bad_reloc;
6200
6201 case R_FRV_GOTTLSDESC12:
6202 picrel->tlsdesc12 = 1;
6203 break;
6204
6205 case R_FRV_GOTTLSDESCHI:
6206 case R_FRV_GOTTLSDESCLO:
6207 picrel->tlsdeschilo = 1;
6208 break;
6209
6210 case R_FRV_TLSMOFF12:
6211 case R_FRV_TLSMOFFHI:
6212 case R_FRV_TLSMOFFLO:
6213 case R_FRV_TLSMOFF:
6214 break;
6215
6216 case R_FRV_GOTTLSOFF12:
6217 picrel->tlsoff12 = 1;
6218 info->flags |= DF_STATIC_TLS;
6219 break;
6220
6221 case R_FRV_GOTTLSOFFHI:
6222 case R_FRV_GOTTLSOFFLO:
6223 picrel->tlsoffhilo = 1;
6224 info->flags |= DF_STATIC_TLS;
6225 break;
6226
6227 case R_FRV_TLSOFF:
6228 picrel->relocstlsoff++;
6229 info->flags |= DF_STATIC_TLS;
6230 goto bad_reloc;
6231
6232 /* This relocation describes the C++ object vtable hierarchy.
6233 Reconstruct it for later use during GC. */
6234 case R_FRV_GNU_VTINHERIT:
6235 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
6236 return FALSE;
6237 break;
6238
6239 /* This relocation describes which C++ vtable entries are actually
6240 used. Record for later use during GC. */
6241 case R_FRV_GNU_VTENTRY:
6242 BFD_ASSERT (h != NULL);
6243 if (h != NULL
6244 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
6245 return FALSE;
6246 break;
6247
6248 case R_FRV_LABEL16:
6249 case R_FRV_LO16:
6250 case R_FRV_HI16:
6251 case R_FRV_GPREL12:
6252 case R_FRV_GPRELU12:
6253 case R_FRV_GPREL32:
6254 case R_FRV_GPRELHI:
6255 case R_FRV_GPRELLO:
6256 case R_FRV_TLSDESC_RELAX:
6257 case R_FRV_GETTLSOFF_RELAX:
6258 case R_FRV_TLSOFF_RELAX:
6259 break;
6260
6261 default:
6262 bad_reloc:
6263 info->callbacks->einfo
6264 (_("%B: unsupported relocation type %i\n"),
6265 abfd, ELF32_R_TYPE (rel->r_info));
6266 return FALSE;
6267 }
6268 }
6269
6270 return TRUE;
6271 }
6272
6273
6274 /* Return the machine subcode from the ELF e_flags header. */
6275
6276 static int
elf32_frv_machine(bfd * abfd)6277 elf32_frv_machine (bfd *abfd)
6278 {
6279 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK)
6280 {
6281 default: break;
6282 case EF_FRV_CPU_FR550: return bfd_mach_fr550;
6283 case EF_FRV_CPU_FR500: return bfd_mach_fr500;
6284 case EF_FRV_CPU_FR450: return bfd_mach_fr450;
6285 case EF_FRV_CPU_FR405: return bfd_mach_fr400;
6286 case EF_FRV_CPU_FR400: return bfd_mach_fr400;
6287 case EF_FRV_CPU_FR300: return bfd_mach_fr300;
6288 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple;
6289 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat;
6290 }
6291
6292 return bfd_mach_frv;
6293 }
6294
6295 /* Set the right machine number for a FRV ELF file. */
6296
6297 static bfd_boolean
elf32_frv_object_p(bfd * abfd)6298 elf32_frv_object_p (bfd *abfd)
6299 {
6300 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd));
6301 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0)
6302 == (IS_FDPIC (abfd)));
6303 }
6304
6305 /* Function to set the ELF flag bits. */
6306
6307 static bfd_boolean
frv_elf_set_private_flags(bfd * abfd,flagword flags)6308 frv_elf_set_private_flags (bfd *abfd, flagword flags)
6309 {
6310 elf_elfheader (abfd)->e_flags = flags;
6311 elf_flags_init (abfd) = TRUE;
6312 return TRUE;
6313 }
6314
6315 /* Return true if the architecture described by elf header flag
6316 EXTENSION is an extension of the architecture described by BASE. */
6317
6318 static bfd_boolean
frv_elf_arch_extension_p(flagword base,flagword extension)6319 frv_elf_arch_extension_p (flagword base, flagword extension)
6320 {
6321 if (base == extension)
6322 return TRUE;
6323
6324 /* CPU_GENERIC code can be merged with code for a specific
6325 architecture, in which case the result is marked as being
6326 for the specific architecture. Everything is therefore
6327 an extension of CPU_GENERIC. */
6328 if (base == EF_FRV_CPU_GENERIC)
6329 return TRUE;
6330
6331 if (extension == EF_FRV_CPU_FR450)
6332 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405)
6333 return TRUE;
6334
6335 if (extension == EF_FRV_CPU_FR405)
6336 if (base == EF_FRV_CPU_FR400)
6337 return TRUE;
6338
6339 return FALSE;
6340 }
6341
6342 /* Merge backend specific data from an object file to the output
6343 object file when linking. */
6344
6345 static bfd_boolean
frv_elf_merge_private_bfd_data(bfd * ibfd,bfd * obfd)6346 frv_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
6347 {
6348 flagword old_flags, old_partial;
6349 flagword new_flags, new_partial;
6350 bfd_boolean error = FALSE;
6351 char new_opt[80];
6352 char old_opt[80];
6353
6354 new_opt[0] = old_opt[0] = '\0';
6355 new_flags = elf_elfheader (ibfd)->e_flags;
6356 old_flags = elf_elfheader (obfd)->e_flags;
6357
6358 if (new_flags & EF_FRV_FDPIC)
6359 new_flags &= ~EF_FRV_PIC;
6360
6361 #ifdef DEBUG
6362 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
6363 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
6364 bfd_get_filename (ibfd));
6365 #endif
6366
6367 if (!elf_flags_init (obfd)) /* First call, no flags set. */
6368 {
6369 elf_flags_init (obfd) = TRUE;
6370 old_flags = new_flags;
6371 }
6372
6373 else if (new_flags == old_flags) /* Compatible flags are ok. */
6374 ;
6375
6376 else /* Possibly incompatible flags. */
6377 {
6378 /* Warn if different # of gprs are used. Note, 0 means nothing is
6379 said about the size of gprs. */
6380 new_partial = (new_flags & EF_FRV_GPR_MASK);
6381 old_partial = (old_flags & EF_FRV_GPR_MASK);
6382 if (new_partial == old_partial)
6383 ;
6384
6385 else if (new_partial == 0)
6386 ;
6387
6388 else if (old_partial == 0)
6389 old_flags |= new_partial;
6390
6391 else
6392 {
6393 switch (new_partial)
6394 {
6395 default: strcat (new_opt, " -mgpr-??"); break;
6396 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break;
6397 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break;
6398 }
6399
6400 switch (old_partial)
6401 {
6402 default: strcat (old_opt, " -mgpr-??"); break;
6403 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break;
6404 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break;
6405 }
6406 }
6407
6408 /* Warn if different # of fprs are used. Note, 0 means nothing is
6409 said about the size of fprs. */
6410 new_partial = (new_flags & EF_FRV_FPR_MASK);
6411 old_partial = (old_flags & EF_FRV_FPR_MASK);
6412 if (new_partial == old_partial)
6413 ;
6414
6415 else if (new_partial == 0)
6416 ;
6417
6418 else if (old_partial == 0)
6419 old_flags |= new_partial;
6420
6421 else
6422 {
6423 switch (new_partial)
6424 {
6425 default: strcat (new_opt, " -mfpr-?"); break;
6426 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break;
6427 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break;
6428 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break;
6429 }
6430
6431 switch (old_partial)
6432 {
6433 default: strcat (old_opt, " -mfpr-?"); break;
6434 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break;
6435 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break;
6436 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break;
6437 }
6438 }
6439
6440 /* Warn if different dword support was used. Note, 0 means nothing is
6441 said about the dword support. */
6442 new_partial = (new_flags & EF_FRV_DWORD_MASK);
6443 old_partial = (old_flags & EF_FRV_DWORD_MASK);
6444 if (new_partial == old_partial)
6445 ;
6446
6447 else if (new_partial == 0)
6448 ;
6449
6450 else if (old_partial == 0)
6451 old_flags |= new_partial;
6452
6453 else
6454 {
6455 switch (new_partial)
6456 {
6457 default: strcat (new_opt, " -mdword-?"); break;
6458 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break;
6459 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break;
6460 }
6461
6462 switch (old_partial)
6463 {
6464 default: strcat (old_opt, " -mdword-?"); break;
6465 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break;
6466 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break;
6467 }
6468 }
6469
6470 /* Or in flags that accumulate (ie, if one module uses it, mark that the
6471 feature is used. */
6472 old_flags |= new_flags & (EF_FRV_DOUBLE
6473 | EF_FRV_MEDIA
6474 | EF_FRV_MULADD
6475 | EF_FRV_NON_PIC_RELOCS);
6476
6477 /* If any module was compiled without -G0, clear the G0 bit. */
6478 old_flags = ((old_flags & ~ EF_FRV_G0)
6479 | (old_flags & new_flags & EF_FRV_G0));
6480
6481 /* If any module was compiled without -mnopack, clear the mnopack bit. */
6482 old_flags = ((old_flags & ~ EF_FRV_NOPACK)
6483 | (old_flags & new_flags & EF_FRV_NOPACK));
6484
6485 /* We don't have to do anything if the pic flags are the same, or the new
6486 module(s) were compiled with -mlibrary-pic. */
6487 new_partial = (new_flags & EF_FRV_PIC_FLAGS);
6488 old_partial = (old_flags & EF_FRV_PIC_FLAGS);
6489 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0))
6490 ;
6491
6492 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic
6493 flags if any from the new module. */
6494 else if ((old_partial & EF_FRV_LIBPIC) != 0)
6495 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial;
6496
6497 /* If we have mixtures of -fpic and -fPIC, or in both bits. */
6498 else if (new_partial != 0 && old_partial != 0)
6499 old_flags |= new_partial;
6500
6501 /* One module was compiled for pic and the other was not, see if we have
6502 had any relocations that are not pic-safe. */
6503 else
6504 {
6505 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0)
6506 old_flags |= new_partial;
6507 else
6508 {
6509 old_flags &= ~ EF_FRV_PIC_FLAGS;
6510 #ifndef FRV_NO_PIC_ERROR
6511 error = TRUE;
6512 (*_bfd_error_handler)
6513 (_("%s: compiled with %s and linked with modules that use non-pic relocations"),
6514 bfd_get_filename (ibfd),
6515 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic");
6516 #endif
6517 }
6518 }
6519
6520 /* Warn if different cpu is used (allow a specific cpu to override
6521 the generic cpu). */
6522 new_partial = (new_flags & EF_FRV_CPU_MASK);
6523 old_partial = (old_flags & EF_FRV_CPU_MASK);
6524 if (frv_elf_arch_extension_p (new_partial, old_partial))
6525 ;
6526
6527 else if (frv_elf_arch_extension_p (old_partial, new_partial))
6528 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial;
6529
6530 else
6531 {
6532 switch (new_partial)
6533 {
6534 default: strcat (new_opt, " -mcpu=?"); break;
6535 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break;
6536 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break;
6537 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break;
6538 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break;
6539 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break;
6540 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break;
6541 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break;
6542 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break;
6543 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break;
6544 }
6545
6546 switch (old_partial)
6547 {
6548 default: strcat (old_opt, " -mcpu=?"); break;
6549 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break;
6550 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break;
6551 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break;
6552 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break;
6553 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break;
6554 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break;
6555 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break;
6556 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break;
6557 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break;
6558 }
6559 }
6560
6561 /* Print out any mismatches from above. */
6562 if (new_opt[0])
6563 {
6564 error = TRUE;
6565 (*_bfd_error_handler)
6566 (_("%s: compiled with %s and linked with modules compiled with %s"),
6567 bfd_get_filename (ibfd), new_opt, old_opt);
6568 }
6569
6570 /* Warn about any other mismatches */
6571 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS);
6572 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS);
6573 if (new_partial != old_partial)
6574 {
6575 old_flags |= new_partial;
6576 error = TRUE;
6577 (*_bfd_error_handler)
6578 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"),
6579 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial);
6580 }
6581 }
6582
6583 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */
6584 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE)
6585 old_flags |= EF_FRV_NOPACK;
6586
6587 /* Update the old flags now with changes made above. */
6588 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK;
6589 elf_elfheader (obfd)->e_flags = old_flags;
6590 if (old_partial != (old_flags & EF_FRV_CPU_MASK))
6591 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd));
6592
6593 if (((new_flags & EF_FRV_FDPIC) == 0)
6594 != (! IS_FDPIC (ibfd)))
6595 {
6596 error = TRUE;
6597 if (IS_FDPIC (obfd))
6598 (*_bfd_error_handler)
6599 (_("%s: cannot link non-fdpic object file into fdpic executable"),
6600 bfd_get_filename (ibfd));
6601 else
6602 (*_bfd_error_handler)
6603 (_("%s: cannot link fdpic object file into non-fdpic executable"),
6604 bfd_get_filename (ibfd));
6605 }
6606
6607 if (error)
6608 bfd_set_error (bfd_error_bad_value);
6609
6610 return !error;
6611 }
6612
6613
6614 static bfd_boolean
frv_elf_print_private_bfd_data(bfd * abfd,void * ptr)6615 frv_elf_print_private_bfd_data (bfd *abfd, void * ptr)
6616 {
6617 FILE *file = (FILE *) ptr;
6618 flagword flags;
6619
6620 BFD_ASSERT (abfd != NULL && ptr != NULL);
6621
6622 /* Print normal ELF private data. */
6623 _bfd_elf_print_private_bfd_data (abfd, ptr);
6624
6625 flags = elf_elfheader (abfd)->e_flags;
6626 fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags);
6627
6628 switch (flags & EF_FRV_CPU_MASK)
6629 {
6630 default: break;
6631 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break;
6632 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break;
6633 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break;
6634 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break;
6635 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break;
6636 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break;
6637 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break;
6638 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break;
6639 }
6640
6641 switch (flags & EF_FRV_GPR_MASK)
6642 {
6643 default: break;
6644 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break;
6645 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break;
6646 }
6647
6648 switch (flags & EF_FRV_FPR_MASK)
6649 {
6650 default: break;
6651 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break;
6652 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break;
6653 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break;
6654 }
6655
6656 switch (flags & EF_FRV_DWORD_MASK)
6657 {
6658 default: break;
6659 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break;
6660 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break;
6661 }
6662
6663 if (flags & EF_FRV_DOUBLE)
6664 fprintf (file, " -mdouble");
6665
6666 if (flags & EF_FRV_MEDIA)
6667 fprintf (file, " -mmedia");
6668
6669 if (flags & EF_FRV_MULADD)
6670 fprintf (file, " -mmuladd");
6671
6672 if (flags & EF_FRV_PIC)
6673 fprintf (file, " -fpic");
6674
6675 if (flags & EF_FRV_BIGPIC)
6676 fprintf (file, " -fPIC");
6677
6678 if (flags & EF_FRV_LIBPIC)
6679 fprintf (file, " -mlibrary-pic");
6680
6681 if (flags & EF_FRV_FDPIC)
6682 fprintf (file, " -mfdpic");
6683
6684 if (flags & EF_FRV_NON_PIC_RELOCS)
6685 fprintf (file, " non-pic relocations");
6686
6687 if (flags & EF_FRV_G0)
6688 fprintf (file, " -G0");
6689
6690 fputc ('\n', file);
6691 return TRUE;
6692 }
6693
6694
6695 /* Support for core dump NOTE sections. */
6696
6697 static bfd_boolean
elf32_frv_grok_prstatus(bfd * abfd,Elf_Internal_Note * note)6698 elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
6699 {
6700 int offset;
6701 unsigned int raw_size;
6702
6703 switch (note->descsz)
6704 {
6705 default:
6706 return FALSE;
6707
6708 /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other
6709 hardcoded offsets and sizes listed below (and contained within
6710 this lexical block) refer to fields in the target's elf_prstatus
6711 struct. */
6712 case 268:
6713 /* `pr_cursig' is at offset 12. */
6714 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
6715
6716 /* `pr_pid' is at offset 24. */
6717 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
6718
6719 /* `pr_reg' is at offset 72. */
6720 offset = 72;
6721
6722 /* Most grok_prstatus implementations set `raw_size' to the size
6723 of the pr_reg field. For Linux/FRV, we set `raw_size' to be
6724 the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap'
6725 and `pr_interp_fdpic_loadmap', both of which (by design)
6726 immediately follow `pr_reg'. This will allow these fields to
6727 be viewed by GDB as registers.
6728
6729 `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and
6730 `pr_interp_fdpic_loadmap' are 4 bytes each. */
6731 raw_size = 184 + 4 + 4;
6732
6733 break;
6734 }
6735
6736 /* Make a ".reg/999" section. */
6737 return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size,
6738 note->descpos + offset);
6739 }
6740
6741 static bfd_boolean
elf32_frv_grok_psinfo(bfd * abfd,Elf_Internal_Note * note)6742 elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
6743 {
6744 switch (note->descsz)
6745 {
6746 default:
6747 return FALSE;
6748
6749 /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */
6750 case 124:
6751
6752 /* `pr_fname' is found at offset 28 and is 16 bytes long. */
6753 elf_tdata (abfd)->core->program
6754 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6755
6756 /* `pr_psargs' is found at offset 44 and is 80 bytes long. */
6757 elf_tdata (abfd)->core->command
6758 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6759 }
6760
6761 /* Note that for some reason, a spurious space is tacked
6762 onto the end of the args in some (at least one anyway)
6763 implementations, so strip it off if it exists. */
6764
6765 {
6766 char *command = elf_tdata (abfd)->core->command;
6767 int n = strlen (command);
6768
6769 if (0 < n && command[n - 1] == ' ')
6770 command[n - 1] = '\0';
6771 }
6772
6773 return TRUE;
6774 }
6775 #define ELF_ARCH bfd_arch_frv
6776 #define ELF_TARGET_ID FRV_ELF_DATA
6777 #define ELF_MACHINE_CODE EM_CYGNUS_FRV
6778 #define ELF_MAXPAGESIZE 0x1000
6779
6780 #define TARGET_BIG_SYM frv_elf32_vec
6781 #define TARGET_BIG_NAME "elf32-frv"
6782
6783 #define elf_info_to_howto frv_info_to_howto_rela
6784 #define elf_backend_relocate_section elf32_frv_relocate_section
6785 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook
6786 #define elf_backend_check_relocs elf32_frv_check_relocs
6787 #define elf_backend_object_p elf32_frv_object_p
6788 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook
6789
6790 #define elf_backend_stack_align 8
6791 #define elf_backend_can_gc_sections 1
6792 #define elf_backend_rela_normal 1
6793
6794 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup
6795 #define bfd_elf32_bfd_reloc_name_lookup frv_reloc_name_lookup
6796 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags
6797 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data
6798 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data
6799
6800 #define elf_backend_want_got_sym 1
6801 #define elf_backend_got_header_size 0
6802 #define elf_backend_want_got_plt 0
6803 #define elf_backend_plt_readonly 1
6804 #define elf_backend_want_plt_sym 0
6805 #define elf_backend_plt_header_size 0
6806
6807 #define elf_backend_finish_dynamic_sections \
6808 elf32_frv_finish_dynamic_sections
6809
6810 #define elf_backend_grok_prstatus elf32_frv_grok_prstatus
6811 #define elf_backend_grok_psinfo elf32_frv_grok_psinfo
6812
6813 #include "elf32-target.h"
6814
6815 #undef ELF_MAXPAGESIZE
6816 #define ELF_MAXPAGESIZE 0x4000
6817
6818 #undef TARGET_BIG_SYM
6819 #define TARGET_BIG_SYM frv_elf32_fdpic_vec
6820 #undef TARGET_BIG_NAME
6821 #define TARGET_BIG_NAME "elf32-frvfdpic"
6822 #undef elf32_bed
6823 #define elf32_bed elf32_frvfdpic_bed
6824
6825 #undef elf_info_to_howto_rel
6826 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel
6827
6828 #undef bfd_elf32_bfd_link_hash_table_create
6829 #define bfd_elf32_bfd_link_hash_table_create \
6830 frvfdpic_elf_link_hash_table_create
6831 #undef elf_backend_always_size_sections
6832 #define elf_backend_always_size_sections \
6833 elf32_frvfdpic_always_size_sections
6834
6835 #undef elf_backend_create_dynamic_sections
6836 #define elf_backend_create_dynamic_sections \
6837 elf32_frvfdpic_create_dynamic_sections
6838 #undef elf_backend_adjust_dynamic_symbol
6839 #define elf_backend_adjust_dynamic_symbol \
6840 elf32_frvfdpic_adjust_dynamic_symbol
6841 #undef elf_backend_size_dynamic_sections
6842 #define elf_backend_size_dynamic_sections \
6843 elf32_frvfdpic_size_dynamic_sections
6844 #undef bfd_elf32_bfd_relax_section
6845 #define bfd_elf32_bfd_relax_section \
6846 elf32_frvfdpic_relax_section
6847 #undef elf_backend_finish_dynamic_symbol
6848 #define elf_backend_finish_dynamic_symbol \
6849 elf32_frvfdpic_finish_dynamic_symbol
6850 #undef elf_backend_finish_dynamic_sections
6851 #define elf_backend_finish_dynamic_sections \
6852 elf32_frvfdpic_finish_dynamic_sections
6853
6854 #undef elf_backend_discard_info
6855 #define elf_backend_discard_info \
6856 frvfdpic_elf_discard_info
6857 #undef elf_backend_can_make_relative_eh_frame
6858 #define elf_backend_can_make_relative_eh_frame \
6859 frvfdpic_elf_use_relative_eh_frame
6860 #undef elf_backend_can_make_lsda_relative_eh_frame
6861 #define elf_backend_can_make_lsda_relative_eh_frame \
6862 frvfdpic_elf_use_relative_eh_frame
6863 #undef elf_backend_encode_eh_address
6864 #define elf_backend_encode_eh_address \
6865 frvfdpic_elf_encode_eh_address
6866
6867 #undef elf_backend_may_use_rel_p
6868 #define elf_backend_may_use_rel_p 1
6869 #undef elf_backend_may_use_rela_p
6870 #define elf_backend_may_use_rela_p 1
6871 /* We use REL for dynamic relocations only. */
6872 #undef elf_backend_default_use_rela_p
6873 #define elf_backend_default_use_rela_p 1
6874
6875 #undef elf_backend_omit_section_dynsym
6876 #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym
6877
6878 #include "elf32-target.h"
6879