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[deliverable/binutils-gdb.git] / bfd / elf64-sh64.c
1 /* SuperH SH64-specific support for 64-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
3 2010 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22 #define SH64_ELF64
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "elf-bfd.h"
29 #include "elf/sh.h"
30
31 /* Add a suffix for datalabel indirection symbols. It must not match any
32 other symbols; user symbols with or without version or other
33 decoration. It must only be used internally and not emitted by any
34 means. */
35 #define DATALABEL_SUFFIX " DL"
36
37 #define GOT_BIAS (-((long)-32768))
38
39 #define PLT_ENTRY_SIZE 64
40
41 /* Return size of a PLT entry. */
42 #define elf_sh64_sizeof_plt(info) PLT_ENTRY_SIZE
43
44 /* Return offset of the PLT0 address in an absolute PLT entry. */
45 #define elf_sh64_plt_plt0_offset(info) 32
46
47 /* Return offset of the linker in PLT0 entry. */
48 #define elf_sh64_plt0_gotplt_offset(info) 0
49
50 /* Return offset of the trampoline in PLT entry */
51 #define elf_sh64_plt_temp_offset(info) 33 /* Add one because it's SHmedia. */
52
53 /* Return offset of the symbol in PLT entry. */
54 #define elf_sh64_plt_symbol_offset(info) 0
55
56 /* Return offset of the relocation in PLT entry. */
57 #define elf_sh64_plt_reloc_offset(info) (info->shared ? 52 : 44)
58
59 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
60
61 /* The sh linker needs to keep track of the number of relocs that it
62 decides to copy in check_relocs for each symbol. This is so that
63 it can discard PC relative relocs if it doesn't need them when
64 linking with -Bsymbolic. We store the information in a field
65 extending the regular ELF linker hash table. */
66
67 /* This structure keeps track of the number of PC relative relocs we
68 have copied for a given symbol. */
69
70 struct elf_sh64_pcrel_relocs_copied
71 {
72 /* Next section. */
73 struct elf_sh64_pcrel_relocs_copied *next;
74 /* A section in dynobj. */
75 asection *section;
76 /* Number of relocs copied in this section. */
77 bfd_size_type count;
78 };
79
80 /* sh ELF linker hash entry. */
81
82 struct elf_sh64_link_hash_entry
83 {
84 struct elf_link_hash_entry root;
85
86 bfd_vma datalabel_got_offset;
87
88 /* Number of PC relative relocs copied for this symbol. */
89 struct elf_sh64_pcrel_relocs_copied *pcrel_relocs_copied;
90 };
91
92 /* Traverse an sh ELF linker hash table. */
93
94 #define sh64_elf64_link_hash_traverse(table, func, info) \
95 (elf_link_hash_traverse \
96 ((table), \
97 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
98 (info)))
99
100 static bfd_reloc_status_type sh_elf64_ignore_reloc
101 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
102 static bfd_reloc_status_type sh_elf64_reloc
103 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
104
105 static reloc_howto_type sh_elf64_howto_table[] = {
106 /* No relocation. */
107 HOWTO (R_SH_NONE, /* type */
108 0, /* rightshift */
109 0, /* size (0 = byte, 1 = short, 2 = long) */
110 0, /* bitsize */
111 FALSE, /* pc_relative */
112 0, /* bitpos */
113 complain_overflow_dont, /* complain_on_overflow */
114 sh_elf64_ignore_reloc, /* special_function */
115 "R_SH_NONE", /* name */
116 FALSE, /* partial_inplace */
117 0, /* src_mask */
118 0, /* dst_mask */
119 FALSE), /* pcrel_offset */
120
121 /* 32 bit absolute relocation. Setting partial_inplace to TRUE and
122 src_mask to a non-zero value is similar to the COFF toolchain. */
123 HOWTO (R_SH_DIR32, /* type */
124 0, /* rightshift */
125 2, /* size (0 = byte, 1 = short, 2 = long) */
126 32, /* bitsize */
127 FALSE, /* pc_relative */
128 0, /* bitpos */
129 complain_overflow_bitfield, /* complain_on_overflow */
130 sh_elf64_reloc, /* special_function */
131 "R_SH_DIR32", /* name */
132 TRUE, /* partial_inplace */
133 0xffffffff, /* src_mask */
134 0xffffffff, /* dst_mask */
135 FALSE), /* pcrel_offset */
136
137 /* 32 bit PC relative relocation. */
138 HOWTO (R_SH_REL32, /* type */
139 0, /* rightshift */
140 2, /* size (0 = byte, 1 = short, 2 = long) */
141 32, /* bitsize */
142 TRUE, /* pc_relative */
143 0, /* bitpos */
144 complain_overflow_signed, /* complain_on_overflow */
145 sh_elf64_ignore_reloc, /* special_function */
146 "R_SH_REL32", /* name */
147 FALSE, /* partial_inplace */
148 0, /* src_mask */
149 0xffffffff, /* dst_mask */
150 TRUE), /* pcrel_offset */
151
152 /* For 32-bit sh, this is R_SH_DIR8WPN. */
153 EMPTY_HOWTO (3),
154
155 /* For 32-bit sh, this is R_SH_IND12W. */
156 EMPTY_HOWTO (4),
157
158 /* For 32-bit sh, this is R_SH_DIR8WPL. */
159 EMPTY_HOWTO (5),
160
161 /* For 32-bit sh, this is R_SH_DIR8WPZ. */
162 EMPTY_HOWTO (6),
163
164 /* For 32-bit sh, this is R_SH_DIR8BP. */
165 EMPTY_HOWTO (7),
166
167 /* For 32-bit sh, this is R_SH_DIR8W. */
168 EMPTY_HOWTO (8),
169
170 /* For 32-bit sh, this is R_SH_DIR8L. */
171 EMPTY_HOWTO (9),
172
173 EMPTY_HOWTO (10),
174 EMPTY_HOWTO (11),
175 EMPTY_HOWTO (12),
176 EMPTY_HOWTO (13),
177 EMPTY_HOWTO (14),
178 EMPTY_HOWTO (15),
179 EMPTY_HOWTO (16),
180 EMPTY_HOWTO (17),
181 EMPTY_HOWTO (18),
182 EMPTY_HOWTO (19),
183 EMPTY_HOWTO (20),
184 EMPTY_HOWTO (21),
185 EMPTY_HOWTO (22),
186 EMPTY_HOWTO (23),
187 EMPTY_HOWTO (24),
188
189 /* The remaining relocs are a GNU extension used for relaxing. The
190 final pass of the linker never needs to do anything with any of
191 these relocs. Any required operations are handled by the
192 relaxation code. */
193
194 /* A 16 bit switch table entry. This is generated for an expression
195 such as ``.word L1 - L2''. The offset holds the difference
196 between the reloc address and L2. */
197 HOWTO (R_SH_SWITCH16, /* type */
198 0, /* rightshift */
199 1, /* size (0 = byte, 1 = short, 2 = long) */
200 16, /* bitsize */
201 FALSE, /* pc_relative */
202 0, /* bitpos */
203 complain_overflow_unsigned, /* complain_on_overflow */
204 sh_elf64_ignore_reloc, /* special_function */
205 "R_SH_SWITCH16", /* name */
206 FALSE, /* partial_inplace */
207 0, /* src_mask */
208 0, /* dst_mask */
209 TRUE), /* pcrel_offset */
210
211 /* A 32 bit switch table entry. This is generated for an expression
212 such as ``.long L1 - L2''. The offset holds the difference
213 between the reloc address and L2. */
214 HOWTO (R_SH_SWITCH32, /* type */
215 0, /* rightshift */
216 2, /* size (0 = byte, 1 = short, 2 = long) */
217 32, /* bitsize */
218 FALSE, /* pc_relative */
219 0, /* bitpos */
220 complain_overflow_unsigned, /* complain_on_overflow */
221 sh_elf64_ignore_reloc, /* special_function */
222 "R_SH_SWITCH32", /* name */
223 FALSE, /* partial_inplace */
224 0, /* src_mask */
225 0, /* dst_mask */
226 TRUE), /* pcrel_offset */
227
228 /* For 32-bit sh, this is R_SH_USES. */
229 EMPTY_HOWTO (27),
230
231 /* For 32-bit sh, this is R_SH_COUNT. */
232 EMPTY_HOWTO (28),
233
234 /* For 32-bit sh, this is R_SH_ALIGN. FIXME: For linker relaxation,
235 this might be emitted. When linker relaxation is implemented, we
236 might want to use it. */
237 EMPTY_HOWTO (29),
238
239 /* For 32-bit sh, this is R_SH_CODE. FIXME: For linker relaxation,
240 this might be emitted. When linker relaxation is implemented, we
241 might want to use it. */
242 EMPTY_HOWTO (30),
243
244 /* For 32-bit sh, this is R_SH_DATA. FIXME: For linker relaxation,
245 this might be emitted. When linker relaxation is implemented, we
246 might want to use it. */
247 EMPTY_HOWTO (31),
248
249 /* For 32-bit sh, this is R_SH_LABEL. FIXME: For linker relaxation,
250 this might be emitted. When linker relaxation is implemented, we
251 might want to use it. */
252 EMPTY_HOWTO (32),
253
254 /* An 8 bit switch table entry. This is generated for an expression
255 such as ``.word L1 - L2''. The offset holds the difference
256 between the reloc address and L2. */
257 HOWTO (R_SH_SWITCH8, /* type */
258 0, /* rightshift */
259 0, /* size (0 = byte, 1 = short, 2 = long) */
260 8, /* bitsize */
261 FALSE, /* pc_relative */
262 0, /* bitpos */
263 complain_overflow_unsigned, /* complain_on_overflow */
264 sh_elf64_ignore_reloc, /* special_function */
265 "R_SH_SWITCH8", /* name */
266 FALSE, /* partial_inplace */
267 0, /* src_mask */
268 0, /* dst_mask */
269 TRUE), /* pcrel_offset */
270
271 /* GNU extension to record C++ vtable hierarchy */
272 HOWTO (R_SH_GNU_VTINHERIT, /* type */
273 0, /* rightshift */
274 2, /* size (0 = byte, 1 = short, 2 = long) */
275 0, /* bitsize */
276 FALSE, /* pc_relative */
277 0, /* bitpos */
278 complain_overflow_dont, /* complain_on_overflow */
279 NULL, /* special_function */
280 "R_SH_GNU_VTINHERIT", /* name */
281 FALSE, /* partial_inplace */
282 0, /* src_mask */
283 0, /* dst_mask */
284 FALSE), /* pcrel_offset */
285
286 /* GNU extension to record C++ vtable member usage */
287 HOWTO (R_SH_GNU_VTENTRY, /* type */
288 0, /* rightshift */
289 2, /* size (0 = byte, 1 = short, 2 = long) */
290 0, /* bitsize */
291 FALSE, /* pc_relative */
292 0, /* bitpos */
293 complain_overflow_dont, /* complain_on_overflow */
294 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
295 "R_SH_GNU_VTENTRY", /* name */
296 FALSE, /* partial_inplace */
297 0, /* src_mask */
298 0, /* dst_mask */
299 FALSE), /* pcrel_offset */
300
301 /* For 32-bit sh, this is R_SH_LOOP_START. */
302 EMPTY_HOWTO (36),
303
304 /* For 32-bit sh, this is R_SH_LOOP_END. */
305 EMPTY_HOWTO (37),
306
307 EMPTY_HOWTO (38),
308 EMPTY_HOWTO (39),
309 EMPTY_HOWTO (40),
310 EMPTY_HOWTO (41),
311 EMPTY_HOWTO (42),
312 EMPTY_HOWTO (43),
313 EMPTY_HOWTO (44),
314
315 /* Used in SHLLI.L and SHLRI.L. */
316 HOWTO (R_SH_DIR5U, /* type */
317 0, /* rightshift */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
319 5, /* bitsize */
320 FALSE, /* pc_relative */
321 10, /* bitpos */
322 complain_overflow_unsigned, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_SH_DIR5U", /* name */
325 FALSE, /* partial_inplace */
326 0, /* src_mask */
327 0xfc00, /* dst_mask */
328 FALSE), /* pcrel_offset */
329
330 /* Used in SHARI, SHLLI et al. */
331 HOWTO (R_SH_DIR6U, /* type */
332 0, /* rightshift */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
334 6, /* bitsize */
335 FALSE, /* pc_relative */
336 10, /* bitpos */
337 complain_overflow_unsigned, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_SH_DIR6U", /* name */
340 FALSE, /* partial_inplace */
341 0, /* src_mask */
342 0xfc00, /* dst_mask */
343 FALSE), /* pcrel_offset */
344
345 /* Used in BxxI, LDHI.L et al. */
346 HOWTO (R_SH_DIR6S, /* type */
347 0, /* rightshift */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
349 6, /* bitsize */
350 FALSE, /* pc_relative */
351 10, /* bitpos */
352 complain_overflow_signed, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_SH_DIR6S", /* name */
355 FALSE, /* partial_inplace */
356 0, /* src_mask */
357 0xfc00, /* dst_mask */
358 FALSE), /* pcrel_offset */
359
360 /* Used in ADDI, ANDI et al. */
361 HOWTO (R_SH_DIR10S, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 10, /* bitsize */
365 FALSE, /* pc_relative */
366 10, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
368 bfd_elf_generic_reloc, /* special_function */
369 "R_SH_DIR10S", /* name */
370 FALSE, /* partial_inplace */
371 0, /* src_mask */
372 0xffc00, /* dst_mask */
373 FALSE), /* pcrel_offset */
374
375 /* Used in LD.UW, ST.W et al. */
376 HOWTO (R_SH_DIR10SW, /* type */
377 1, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 11, /* bitsize */
380 FALSE, /* pc_relative */
381 10, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_SH_DIR10SW", /* name */
385 FALSE, /* partial_inplace */
386 0, /* src_mask */
387 0xffc00, /* dst_mask */
388 FALSE), /* pcrel_offset */
389
390 /* Used in LD.L, FLD.S et al. */
391 HOWTO (R_SH_DIR10SL, /* type */
392 2, /* rightshift */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
394 12, /* bitsize */
395 FALSE, /* pc_relative */
396 10, /* bitpos */
397 complain_overflow_signed, /* complain_on_overflow */
398 bfd_elf_generic_reloc, /* special_function */
399 "R_SH_DIR10SL", /* name */
400 FALSE, /* partial_inplace */
401 0, /* src_mask */
402 0xffc00, /* dst_mask */
403 FALSE), /* pcrel_offset */
404
405 /* Used in FLD.D, FST.P et al. */
406 HOWTO (R_SH_DIR10SQ, /* type */
407 3, /* rightshift */
408 2, /* size (0 = byte, 1 = short, 2 = long) */
409 13, /* bitsize */
410 FALSE, /* pc_relative */
411 10, /* bitpos */
412 complain_overflow_signed, /* complain_on_overflow */
413 bfd_elf_generic_reloc, /* special_function */
414 "R_SH_DIR10SQ", /* name */
415 FALSE, /* partial_inplace */
416 0, /* src_mask */
417 0xffc00, /* dst_mask */
418 FALSE), /* pcrel_offset */
419
420 EMPTY_HOWTO (52),
421 EMPTY_HOWTO (53),
422 EMPTY_HOWTO (54),
423 EMPTY_HOWTO (55),
424 EMPTY_HOWTO (56),
425 EMPTY_HOWTO (57),
426 EMPTY_HOWTO (58),
427 EMPTY_HOWTO (59),
428 EMPTY_HOWTO (60),
429 EMPTY_HOWTO (61),
430 EMPTY_HOWTO (62),
431 EMPTY_HOWTO (63),
432 EMPTY_HOWTO (64),
433 EMPTY_HOWTO (65),
434 EMPTY_HOWTO (66),
435 EMPTY_HOWTO (67),
436 EMPTY_HOWTO (68),
437 EMPTY_HOWTO (69),
438 EMPTY_HOWTO (70),
439 EMPTY_HOWTO (71),
440 EMPTY_HOWTO (72),
441 EMPTY_HOWTO (73),
442 EMPTY_HOWTO (74),
443 EMPTY_HOWTO (75),
444 EMPTY_HOWTO (76),
445 EMPTY_HOWTO (77),
446 EMPTY_HOWTO (78),
447 EMPTY_HOWTO (79),
448 EMPTY_HOWTO (80),
449 EMPTY_HOWTO (81),
450 EMPTY_HOWTO (82),
451 EMPTY_HOWTO (83),
452 EMPTY_HOWTO (84),
453 EMPTY_HOWTO (85),
454 EMPTY_HOWTO (86),
455 EMPTY_HOWTO (87),
456 EMPTY_HOWTO (88),
457 EMPTY_HOWTO (89),
458 EMPTY_HOWTO (90),
459 EMPTY_HOWTO (91),
460 EMPTY_HOWTO (92),
461 EMPTY_HOWTO (93),
462 EMPTY_HOWTO (94),
463 EMPTY_HOWTO (95),
464 EMPTY_HOWTO (96),
465 EMPTY_HOWTO (97),
466 EMPTY_HOWTO (98),
467 EMPTY_HOWTO (99),
468 EMPTY_HOWTO (100),
469 EMPTY_HOWTO (101),
470 EMPTY_HOWTO (102),
471 EMPTY_HOWTO (103),
472 EMPTY_HOWTO (104),
473 EMPTY_HOWTO (105),
474 EMPTY_HOWTO (106),
475 EMPTY_HOWTO (107),
476 EMPTY_HOWTO (108),
477 EMPTY_HOWTO (109),
478 EMPTY_HOWTO (110),
479 EMPTY_HOWTO (111),
480 EMPTY_HOWTO (112),
481 EMPTY_HOWTO (113),
482 EMPTY_HOWTO (114),
483 EMPTY_HOWTO (115),
484 EMPTY_HOWTO (116),
485 EMPTY_HOWTO (117),
486 EMPTY_HOWTO (118),
487 EMPTY_HOWTO (119),
488 EMPTY_HOWTO (120),
489 EMPTY_HOWTO (121),
490 EMPTY_HOWTO (122),
491 EMPTY_HOWTO (123),
492 EMPTY_HOWTO (124),
493 EMPTY_HOWTO (125),
494 EMPTY_HOWTO (126),
495 EMPTY_HOWTO (127),
496 EMPTY_HOWTO (128),
497 EMPTY_HOWTO (129),
498 EMPTY_HOWTO (130),
499 EMPTY_HOWTO (131),
500 EMPTY_HOWTO (132),
501 EMPTY_HOWTO (133),
502 EMPTY_HOWTO (134),
503 EMPTY_HOWTO (135),
504 EMPTY_HOWTO (136),
505 EMPTY_HOWTO (137),
506 EMPTY_HOWTO (138),
507 EMPTY_HOWTO (139),
508 EMPTY_HOWTO (140),
509 EMPTY_HOWTO (141),
510 EMPTY_HOWTO (142),
511 EMPTY_HOWTO (143),
512 EMPTY_HOWTO (144),
513 EMPTY_HOWTO (145),
514 EMPTY_HOWTO (146),
515 EMPTY_HOWTO (147),
516 EMPTY_HOWTO (148),
517 EMPTY_HOWTO (149),
518 EMPTY_HOWTO (150),
519 EMPTY_HOWTO (151),
520 EMPTY_HOWTO (152),
521 EMPTY_HOWTO (153),
522 EMPTY_HOWTO (154),
523 EMPTY_HOWTO (155),
524 EMPTY_HOWTO (156),
525 EMPTY_HOWTO (157),
526 EMPTY_HOWTO (158),
527 EMPTY_HOWTO (159),
528
529 /* Relocs for dynamic linking for 32-bit SH would follow. We don't have
530 any dynamic linking support for 64-bit SH at present. */
531
532 EMPTY_HOWTO (160),
533 EMPTY_HOWTO (161),
534 EMPTY_HOWTO (162),
535 EMPTY_HOWTO (163),
536 EMPTY_HOWTO (164),
537 EMPTY_HOWTO (165),
538 EMPTY_HOWTO (166),
539 EMPTY_HOWTO (167),
540 EMPTY_HOWTO (168),
541
542 /* Back to SH5 relocations. */
543 /* Used in MOVI and SHORI (x & 65536). */
544 HOWTO (R_SH_GOT_LOW16, /* type */
545 0, /* rightshift */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
547 64, /* bitsize */
548 FALSE, /* pc_relative */
549 10, /* bitpos */
550 complain_overflow_dont, /* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_SH_GOT_LOW16", /* name */
553 FALSE, /* partial_inplace */
554 0, /* src_mask */
555 0x3fffc00, /* dst_mask */
556 FALSE), /* pcrel_offset */
557
558 /* Used in MOVI and SHORI ((x >> 16) & 65536). */
559 HOWTO (R_SH_GOT_MEDLOW16, /* type */
560 16, /* rightshift */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
562 64, /* bitsize */
563 FALSE, /* pc_relative */
564 10, /* bitpos */
565 complain_overflow_dont, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_SH_GOT_MEDLOW16", /* name */
568 FALSE, /* partial_inplace */
569 0, /* src_mask */
570 0x3fffc00, /* dst_mask */
571 FALSE), /* pcrel_offset */
572
573 /* Used in MOVI and SHORI ((x >> 32) & 65536). */
574 HOWTO (R_SH_GOT_MEDHI16, /* type */
575 32, /* rightshift */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
577 64, /* bitsize */
578 FALSE, /* pc_relative */
579 10, /* bitpos */
580 complain_overflow_dont, /* complain_on_overflow */
581 bfd_elf_generic_reloc, /* special_function */
582 "R_SH_GOT_MEDHI16", /* name */
583 FALSE, /* partial_inplace */
584 0, /* src_mask */
585 0x3fffc00, /* dst_mask */
586 FALSE), /* pcrel_offset */
587
588 /* Used in MOVI and SHORI ((x >> 48) & 65536). */
589 HOWTO (R_SH_GOT_HI16, /* type */
590 48, /* rightshift */
591 2, /* size (0 = byte, 1 = short, 2 = long) */
592 64, /* bitsize */
593 FALSE, /* pc_relative */
594 10, /* bitpos */
595 complain_overflow_dont, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_SH_GOT_HI16", /* name */
598 FALSE, /* partial_inplace */
599 0, /* src_mask */
600 0x3fffc00, /* dst_mask */
601 FALSE), /* pcrel_offset */
602
603 /* Used in MOVI and SHORI (x & 65536). */
604 HOWTO (R_SH_GOTPLT_LOW16, /* type */
605 0, /* rightshift */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
607 64, /* bitsize */
608 FALSE, /* pc_relative */
609 10, /* bitpos */
610 complain_overflow_dont, /* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_SH_GOTPLT_LOW16", /* name */
613 FALSE, /* partial_inplace */
614 0, /* src_mask */
615 0x3fffc00, /* dst_mask */
616 FALSE), /* pcrel_offset */
617
618 /* Used in MOVI and SHORI ((x >> 16) & 65536). */
619 HOWTO (R_SH_GOTPLT_MEDLOW16, /* type */
620 16, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 64, /* bitsize */
623 FALSE, /* pc_relative */
624 10, /* bitpos */
625 complain_overflow_dont, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_SH_GOTPLT_MEDLOW16", /* name */
628 FALSE, /* partial_inplace */
629 0, /* src_mask */
630 0x3fffc00, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 /* Used in MOVI and SHORI ((x >> 32) & 65536). */
634 HOWTO (R_SH_GOTPLT_MEDHI16, /* type */
635 32, /* rightshift */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
637 64, /* bitsize */
638 FALSE, /* pc_relative */
639 10, /* bitpos */
640 complain_overflow_dont, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_SH_GOTPLT_MEDHI16", /* name */
643 FALSE, /* partial_inplace */
644 0, /* src_mask */
645 0x3fffc00, /* dst_mask */
646 FALSE), /* pcrel_offset */
647
648 /* Used in MOVI and SHORI ((x >> 48) & 65536). */
649 HOWTO (R_SH_GOTPLT_HI16, /* type */
650 48, /* rightshift */
651 2, /* size (0 = byte, 1 = short, 2 = long) */
652 64, /* bitsize */
653 FALSE, /* pc_relative */
654 10, /* bitpos */
655 complain_overflow_dont, /* complain_on_overflow */
656 bfd_elf_generic_reloc, /* special_function */
657 "R_SH_GOTPLT_HI16", /* name */
658 FALSE, /* partial_inplace */
659 0, /* src_mask */
660 0x3fffc00, /* dst_mask */
661 FALSE), /* pcrel_offset */
662
663 /* Used in MOVI and SHORI (x & 65536). */
664 HOWTO (R_SH_PLT_LOW16, /* type */
665 0, /* rightshift */
666 2, /* size (0 = byte, 1 = short, 2 = long) */
667 64, /* bitsize */
668 TRUE, /* pc_relative */
669 10, /* bitpos */
670 complain_overflow_dont, /* complain_on_overflow */
671 bfd_elf_generic_reloc, /* special_function */
672 "R_SH_PLT_LOW16", /* name */
673 FALSE, /* partial_inplace */
674 0, /* src_mask */
675 0x3fffc00, /* dst_mask */
676 TRUE), /* pcrel_offset */
677
678 /* Used in MOVI and SHORI ((x >> 16) & 65536). */
679 HOWTO (R_SH_PLT_MEDLOW16, /* type */
680 16, /* rightshift */
681 2, /* size (0 = byte, 1 = short, 2 = long) */
682 64, /* bitsize */
683 TRUE, /* pc_relative */
684 10, /* bitpos */
685 complain_overflow_dont, /* complain_on_overflow */
686 bfd_elf_generic_reloc, /* special_function */
687 "R_SH_PLT_MEDLOW16", /* name */
688 FALSE, /* partial_inplace */
689 0, /* src_mask */
690 0x3fffc00, /* dst_mask */
691 TRUE), /* pcrel_offset */
692
693 /* Used in MOVI and SHORI ((x >> 32) & 65536). */
694 HOWTO (R_SH_PLT_MEDHI16, /* type */
695 32, /* rightshift */
696 2, /* size (0 = byte, 1 = short, 2 = long) */
697 64, /* bitsize */
698 TRUE, /* pc_relative */
699 10, /* bitpos */
700 complain_overflow_dont, /* complain_on_overflow */
701 bfd_elf_generic_reloc, /* special_function */
702 "R_SH_PLT_MEDHI16", /* name */
703 FALSE, /* partial_inplace */
704 0, /* src_mask */
705 0x3fffc00, /* dst_mask */
706 TRUE), /* pcrel_offset */
707
708 /* Used in MOVI and SHORI ((x >> 48) & 65536). */
709 HOWTO (R_SH_PLT_HI16, /* type */
710 48, /* rightshift */
711 2, /* size (0 = byte, 1 = short, 2 = long) */
712 64, /* bitsize */
713 TRUE, /* pc_relative */
714 10, /* bitpos */
715 complain_overflow_dont, /* complain_on_overflow */
716 bfd_elf_generic_reloc, /* special_function */
717 "R_SH_PLT_HI16", /* name */
718 FALSE, /* partial_inplace */
719 0, /* src_mask */
720 0x3fffc00, /* dst_mask */
721 TRUE), /* pcrel_offset */
722
723 /* Used in MOVI and SHORI (x & 65536). */
724 HOWTO (R_SH_GOTOFF_LOW16, /* type */
725 0, /* rightshift */
726 2, /* size (0 = byte, 1 = short, 2 = long) */
727 64, /* bitsize */
728 FALSE, /* pc_relative */
729 10, /* bitpos */
730 complain_overflow_dont, /* complain_on_overflow */
731 bfd_elf_generic_reloc, /* special_function */
732 "R_SH_GOTOFF_LOW16", /* name */
733 FALSE, /* partial_inplace */
734 0, /* src_mask */
735 0x3fffc00, /* dst_mask */
736 FALSE), /* pcrel_offset */
737
738 /* Used in MOVI and SHORI ((x >> 16) & 65536). */
739 HOWTO (R_SH_GOTOFF_MEDLOW16, /* type */
740 16, /* rightshift */
741 2, /* size (0 = byte, 1 = short, 2 = long) */
742 64, /* bitsize */
743 FALSE, /* pc_relative */
744 10, /* bitpos */
745 complain_overflow_dont, /* complain_on_overflow */
746 bfd_elf_generic_reloc, /* special_function */
747 "R_SH_GOTOFF_MEDLOW16", /* name */
748 FALSE, /* partial_inplace */
749 0, /* src_mask */
750 0x3fffc00, /* dst_mask */
751 FALSE), /* pcrel_offset */
752
753 /* Used in MOVI and SHORI ((x >> 32) & 65536). */
754 HOWTO (R_SH_GOTOFF_MEDHI16, /* type */
755 32, /* rightshift */
756 2, /* size (0 = byte, 1 = short, 2 = long) */
757 64, /* bitsize */
758 FALSE, /* pc_relative */
759 10, /* bitpos */
760 complain_overflow_dont, /* complain_on_overflow */
761 bfd_elf_generic_reloc, /* special_function */
762 "R_SH_GOTOFF_MEDHI16", /* name */
763 FALSE, /* partial_inplace */
764 0, /* src_mask */
765 0x3fffc00, /* dst_mask */
766 FALSE), /* pcrel_offset */
767
768 /* Used in MOVI and SHORI ((x >> 48) & 65536). */
769 HOWTO (R_SH_GOTOFF_HI16, /* type */
770 48, /* rightshift */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
772 64, /* bitsize */
773 FALSE, /* pc_relative */
774 10, /* bitpos */
775 complain_overflow_dont, /* complain_on_overflow */
776 bfd_elf_generic_reloc, /* special_function */
777 "R_SH_GOTOFF_HI16", /* name */
778 FALSE, /* partial_inplace */
779 0, /* src_mask */
780 0x3fffc00, /* dst_mask */
781 FALSE), /* pcrel_offset */
782
783 /* Used in MOVI and SHORI (x & 65536). */
784 HOWTO (R_SH_GOTPC_LOW16, /* type */
785 0, /* rightshift */
786 2, /* size (0 = byte, 1 = short, 2 = long) */
787 64, /* bitsize */
788 TRUE, /* pc_relative */
789 10, /* bitpos */
790 complain_overflow_dont, /* complain_on_overflow */
791 bfd_elf_generic_reloc, /* special_function */
792 "R_SH_GOTPC_LOW16", /* name */
793 FALSE, /* partial_inplace */
794 0, /* src_mask */
795 0x3fffc00, /* dst_mask */
796 TRUE), /* pcrel_offset */
797
798 /* Used in MOVI and SHORI ((x >> 16) & 65536). */
799 HOWTO (R_SH_GOTPC_MEDLOW16, /* type */
800 16, /* rightshift */
801 2, /* size (0 = byte, 1 = short, 2 = long) */
802 64, /* bitsize */
803 TRUE, /* pc_relative */
804 10, /* bitpos */
805 complain_overflow_dont, /* complain_on_overflow */
806 bfd_elf_generic_reloc, /* special_function */
807 "R_SH_GOTPC_MEDLOW16", /* name */
808 FALSE, /* partial_inplace */
809 0, /* src_mask */
810 0x3fffc00, /* dst_mask */
811 TRUE), /* pcrel_offset */
812
813 /* Used in MOVI and SHORI ((x >> 32) & 65536). */
814 HOWTO (R_SH_GOTPC_MEDHI16, /* type */
815 32, /* rightshift */
816 2, /* size (0 = byte, 1 = short, 2 = long) */
817 64, /* bitsize */
818 TRUE, /* pc_relative */
819 10, /* bitpos */
820 complain_overflow_dont, /* complain_on_overflow */
821 bfd_elf_generic_reloc, /* special_function */
822 "R_SH_GOTPC_MEDHI16", /* name */
823 FALSE, /* partial_inplace */
824 0, /* src_mask */
825 0x3fffc00, /* dst_mask */
826 TRUE), /* pcrel_offset */
827
828 /* Used in MOVI and SHORI ((x >> 48) & 65536). */
829 HOWTO (R_SH_GOTPC_HI16, /* type */
830 48, /* rightshift */
831 2, /* size (0 = byte, 1 = short, 2 = long) */
832 64, /* bitsize */
833 TRUE, /* pc_relative */
834 10, /* bitpos */
835 complain_overflow_dont, /* complain_on_overflow */
836 bfd_elf_generic_reloc, /* special_function */
837 "R_SH_GOTPC_HI16", /* name */
838 FALSE, /* partial_inplace */
839 0, /* src_mask */
840 0x3fffc00, /* dst_mask */
841 TRUE), /* pcrel_offset */
842
843 /* Used in LD.L, FLD.S et al. */
844 HOWTO (R_SH_GOT10BY4, /* type */
845 2, /* rightshift */
846 2, /* size (0 = byte, 1 = short, 2 = long) */
847 12, /* bitsize */
848 FALSE, /* pc_relative */
849 10, /* bitpos */
850 complain_overflow_signed, /* complain_on_overflow */
851 bfd_elf_generic_reloc, /* special_function */
852 "R_SH_GOT10BY4", /* name */
853 FALSE, /* partial_inplace */
854 0, /* src_mask */
855 0xffc00, /* dst_mask */
856 FALSE), /* pcrel_offset */
857
858 /* Used in LD.L, FLD.S et al. */
859 HOWTO (R_SH_GOTPLT10BY4, /* type */
860 2, /* rightshift */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
862 12, /* bitsize */
863 FALSE, /* pc_relative */
864 10, /* bitpos */
865 complain_overflow_signed, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_SH_GOTPLT10BY4", /* name */
868 FALSE, /* partial_inplace */
869 0, /* src_mask */
870 0xffc00, /* dst_mask */
871 FALSE), /* pcrel_offset */
872
873 /* Used in FLD.D, FST.P et al. */
874 HOWTO (R_SH_GOT10BY8, /* type */
875 3, /* rightshift */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
877 13, /* bitsize */
878 FALSE, /* pc_relative */
879 10, /* bitpos */
880 complain_overflow_signed, /* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_SH_GOT10BY8", /* name */
883 FALSE, /* partial_inplace */
884 0, /* src_mask */
885 0xffc00, /* dst_mask */
886 FALSE), /* pcrel_offset */
887
888 /* Used in FLD.D, FST.P et al. */
889 HOWTO (R_SH_GOTPLT10BY8, /* type */
890 3, /* rightshift */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
892 13, /* bitsize */
893 FALSE, /* pc_relative */
894 10, /* bitpos */
895 complain_overflow_signed, /* complain_on_overflow */
896 bfd_elf_generic_reloc, /* special_function */
897 "R_SH_GOTPLT10BY8", /* name */
898 FALSE, /* partial_inplace */
899 0, /* src_mask */
900 0xffc00, /* dst_mask */
901 FALSE), /* pcrel_offset */
902
903 HOWTO (R_SH_COPY64, /* type */
904 0, /* rightshift */
905 4, /* size (0 = byte, 1 = short, 2 = long) */
906 64, /* bitsize */
907 FALSE, /* pc_relative */
908 0, /* bitpos */
909 complain_overflow_dont, /* complain_on_overflow */
910 bfd_elf_generic_reloc, /* special_function */
911 "R_SH_COPY64", /* name */
912 FALSE, /* partial_inplace */
913 0, /* src_mask */
914 ((bfd_vma) 0) - 1, /* dst_mask */
915 FALSE), /* pcrel_offset */
916
917 HOWTO (R_SH_GLOB_DAT64, /* type */
918 0, /* rightshift */
919 4, /* size (0 = byte, 1 = short, 2 = long) */
920 64, /* bitsize */
921 FALSE, /* pc_relative */
922 0, /* bitpos */
923 complain_overflow_dont, /* complain_on_overflow */
924 bfd_elf_generic_reloc, /* special_function */
925 "R_SH_GLOB_DAT64", /* name */
926 FALSE, /* partial_inplace */
927 0, /* src_mask */
928 ((bfd_vma) 0) - 1, /* dst_mask */
929 FALSE), /* pcrel_offset */
930
931 HOWTO (R_SH_JMP_SLOT64, /* type */
932 0, /* rightshift */
933 4, /* size (0 = byte, 1 = short, 2 = long) */
934 64, /* bitsize */
935 FALSE, /* pc_relative */
936 0, /* bitpos */
937 complain_overflow_dont, /* complain_on_overflow */
938 bfd_elf_generic_reloc, /* special_function */
939 "R_SH_JMP_SLOT64", /* name */
940 FALSE, /* partial_inplace */
941 0, /* src_mask */
942 ((bfd_vma) 0) - 1, /* dst_mask */
943 FALSE), /* pcrel_offset */
944
945 HOWTO (R_SH_RELATIVE64, /* type */
946 0, /* rightshift */
947 4, /* size (0 = byte, 1 = short, 2 = long) */
948 64, /* bitsize */
949 FALSE, /* pc_relative */
950 0, /* bitpos */
951 complain_overflow_dont, /* complain_on_overflow */
952 bfd_elf_generic_reloc, /* special_function */
953 "R_SH_RELATIVE64", /* name */
954 FALSE, /* partial_inplace */
955 0, /* src_mask */
956 ((bfd_vma) 0) - 1, /* dst_mask */
957 FALSE), /* pcrel_offset */
958
959 EMPTY_HOWTO (197),
960 EMPTY_HOWTO (198),
961 EMPTY_HOWTO (199),
962 EMPTY_HOWTO (200),
963 EMPTY_HOWTO (201),
964 EMPTY_HOWTO (202),
965 EMPTY_HOWTO (203),
966 EMPTY_HOWTO (204),
967 EMPTY_HOWTO (205),
968 EMPTY_HOWTO (206),
969 EMPTY_HOWTO (207),
970 EMPTY_HOWTO (208),
971 EMPTY_HOWTO (209),
972 EMPTY_HOWTO (210),
973 EMPTY_HOWTO (211),
974 EMPTY_HOWTO (212),
975 EMPTY_HOWTO (213),
976 EMPTY_HOWTO (214),
977 EMPTY_HOWTO (215),
978 EMPTY_HOWTO (216),
979 EMPTY_HOWTO (217),
980 EMPTY_HOWTO (218),
981 EMPTY_HOWTO (219),
982 EMPTY_HOWTO (220),
983 EMPTY_HOWTO (221),
984 EMPTY_HOWTO (222),
985 EMPTY_HOWTO (223),
986 EMPTY_HOWTO (224),
987 EMPTY_HOWTO (225),
988 EMPTY_HOWTO (226),
989 EMPTY_HOWTO (227),
990 EMPTY_HOWTO (228),
991 EMPTY_HOWTO (229),
992 EMPTY_HOWTO (230),
993 EMPTY_HOWTO (231),
994 EMPTY_HOWTO (232),
995 EMPTY_HOWTO (233),
996 EMPTY_HOWTO (234),
997 EMPTY_HOWTO (235),
998 EMPTY_HOWTO (236),
999 EMPTY_HOWTO (237),
1000 EMPTY_HOWTO (238),
1001 EMPTY_HOWTO (239),
1002 EMPTY_HOWTO (240),
1003 EMPTY_HOWTO (241),
1004
1005 /* Relocations for SHmedia code. None of these are partial_inplace or
1006 use the field being relocated. */
1007
1008 /* The assembler will generate this reloc before a block of SHmedia
1009 instructions. A section should be processed as assuming it contains
1010 data, unless this reloc is seen. Note that a block of SHcompact
1011 instructions are instead preceded by R_SH_CODE.
1012 This is currently not implemented, but should be used for SHmedia
1013 linker relaxation. */
1014 HOWTO (R_SH_SHMEDIA_CODE, /* type */
1015 0, /* rightshift */
1016 1, /* size (0 = byte, 1 = short, 2 = long) */
1017 0, /* bitsize */
1018 FALSE, /* pc_relative */
1019 0, /* bitpos */
1020 complain_overflow_unsigned, /* complain_on_overflow */
1021 sh_elf64_ignore_reloc, /* special_function */
1022 "R_SH_SHMEDIA_CODE", /* name */
1023 FALSE, /* partial_inplace */
1024 0, /* src_mask */
1025 0, /* dst_mask */
1026 FALSE), /* pcrel_offset */
1027
1028 /* The assembler will generate this reloc at a PTA or PTB instruction,
1029 and the linker checks the right type of target, or changes a PTA to a
1030 PTB, if the original insn was PT. */
1031 HOWTO (R_SH_PT_16, /* type */
1032 2, /* rightshift */
1033 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 18, /* bitsize */
1035 TRUE, /* pc_relative */
1036 10, /* bitpos */
1037 complain_overflow_signed, /* complain_on_overflow */
1038 bfd_elf_generic_reloc, /* special_function */
1039 "R_SH_PT_16", /* name */
1040 FALSE, /* partial_inplace */
1041 0, /* src_mask */
1042 0x3fffc00, /* dst_mask */
1043 TRUE), /* pcrel_offset */
1044
1045 /* Used in unexpanded MOVI. */
1046 HOWTO (R_SH_IMMS16, /* type */
1047 0, /* rightshift */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1049 16, /* bitsize */
1050 FALSE, /* pc_relative */
1051 10, /* bitpos */
1052 complain_overflow_signed, /* complain_on_overflow */
1053 bfd_elf_generic_reloc, /* special_function */
1054 "R_SH_IMMS16", /* name */
1055 FALSE, /* partial_inplace */
1056 0, /* src_mask */
1057 0x3fffc00, /* dst_mask */
1058 FALSE), /* pcrel_offset */
1059
1060 /* Used in SHORI. */
1061 HOWTO (R_SH_IMMU16, /* type */
1062 0, /* rightshift */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 16, /* bitsize */
1065 FALSE, /* pc_relative */
1066 10, /* bitpos */
1067 complain_overflow_unsigned, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_SH_IMMU16", /* name */
1070 FALSE, /* partial_inplace */
1071 0, /* src_mask */
1072 0x3fffc00, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1074
1075 /* Used in MOVI and SHORI (x & 65536). */
1076 HOWTO (R_SH_IMM_LOW16, /* type */
1077 0, /* rightshift */
1078 2, /* size (0 = byte, 1 = short, 2 = long) */
1079 64, /* bitsize */
1080 FALSE, /* pc_relative */
1081 10, /* bitpos */
1082 complain_overflow_dont, /* complain_on_overflow */
1083 bfd_elf_generic_reloc, /* special_function */
1084 "R_SH_IMM_LOW16", /* name */
1085 FALSE, /* partial_inplace */
1086 0, /* src_mask */
1087 0x3fffc00, /* dst_mask */
1088 FALSE), /* pcrel_offset */
1089
1090 /* Used in MOVI and SHORI ((x - $) & 65536). */
1091 HOWTO (R_SH_IMM_LOW16_PCREL, /* type */
1092 0, /* rightshift */
1093 2, /* size (0 = byte, 1 = short, 2 = long) */
1094 64, /* bitsize */
1095 TRUE, /* pc_relative */
1096 10, /* bitpos */
1097 complain_overflow_dont, /* complain_on_overflow */
1098 bfd_elf_generic_reloc, /* special_function */
1099 "R_SH_IMM_LOW16_PCREL", /* name */
1100 FALSE, /* partial_inplace */
1101 0, /* src_mask */
1102 0x3fffc00, /* dst_mask */
1103 TRUE), /* pcrel_offset */
1104
1105 /* Used in MOVI and SHORI ((x >> 16) & 65536). */
1106 HOWTO (R_SH_IMM_MEDLOW16, /* type */
1107 16, /* rightshift */
1108 2, /* size (0 = byte, 1 = short, 2 = long) */
1109 64, /* bitsize */
1110 FALSE, /* pc_relative */
1111 10, /* bitpos */
1112 complain_overflow_dont, /* complain_on_overflow */
1113 bfd_elf_generic_reloc, /* special_function */
1114 "R_SH_IMM_MEDLOW16", /* name */
1115 FALSE, /* partial_inplace */
1116 0, /* src_mask */
1117 0x3fffc00, /* dst_mask */
1118 FALSE), /* pcrel_offset */
1119
1120 /* Used in MOVI and SHORI (((x - $) >> 16) & 65536). */
1121 HOWTO (R_SH_IMM_MEDLOW16_PCREL, /* type */
1122 16, /* rightshift */
1123 2, /* size (0 = byte, 1 = short, 2 = long) */
1124 64, /* bitsize */
1125 TRUE, /* pc_relative */
1126 10, /* bitpos */
1127 complain_overflow_dont, /* complain_on_overflow */
1128 bfd_elf_generic_reloc, /* special_function */
1129 "R_SH_IMM_MEDLOW16_PCREL", /* name */
1130 FALSE, /* partial_inplace */
1131 0, /* src_mask */
1132 0x3fffc00, /* dst_mask */
1133 TRUE), /* pcrel_offset */
1134
1135 /* Used in MOVI and SHORI ((x >> 32) & 65536). */
1136 HOWTO (R_SH_IMM_MEDHI16, /* type */
1137 32, /* rightshift */
1138 2, /* size (0 = byte, 1 = short, 2 = long) */
1139 64, /* bitsize */
1140 FALSE, /* pc_relative */
1141 10, /* bitpos */
1142 complain_overflow_dont, /* complain_on_overflow */
1143 bfd_elf_generic_reloc, /* special_function */
1144 "R_SH_IMM_MEDHI16", /* name */
1145 FALSE, /* partial_inplace */
1146 0, /* src_mask */
1147 0x3fffc00, /* dst_mask */
1148 FALSE), /* pcrel_offset */
1149
1150 /* Used in MOVI and SHORI (((x - $) >> 32) & 65536). */
1151 HOWTO (R_SH_IMM_MEDHI16_PCREL, /* type */
1152 32, /* rightshift */
1153 2, /* size (0 = byte, 1 = short, 2 = long) */
1154 64, /* bitsize */
1155 TRUE, /* pc_relative */
1156 10, /* bitpos */
1157 complain_overflow_dont, /* complain_on_overflow */
1158 bfd_elf_generic_reloc, /* special_function */
1159 "R_SH_IMM_MEDHI16_PCREL", /* name */
1160 FALSE, /* partial_inplace */
1161 0, /* src_mask */
1162 0x3fffc00, /* dst_mask */
1163 TRUE), /* pcrel_offset */
1164
1165 /* Used in MOVI and SHORI ((x >> 48) & 65536). */
1166 HOWTO (R_SH_IMM_HI16, /* type */
1167 48, /* rightshift */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1169 64, /* bitsize */
1170 FALSE, /* pc_relative */
1171 10, /* bitpos */
1172 complain_overflow_dont, /* complain_on_overflow */
1173 bfd_elf_generic_reloc, /* special_function */
1174 "R_SH_IMM_HI16", /* name */
1175 FALSE, /* partial_inplace */
1176 0, /* src_mask */
1177 0x3fffc00, /* dst_mask */
1178 FALSE), /* pcrel_offset */
1179
1180 /* Used in MOVI and SHORI (((x - $) >> 48) & 65536). */
1181 HOWTO (R_SH_IMM_HI16_PCREL, /* type */
1182 48, /* rightshift */
1183 2, /* size (0 = byte, 1 = short, 2 = long) */
1184 64, /* bitsize */
1185 TRUE, /* pc_relative */
1186 10, /* bitpos */
1187 complain_overflow_dont, /* complain_on_overflow */
1188 bfd_elf_generic_reloc, /* special_function */
1189 "R_SH_IMM_HI16_PCREL", /* name */
1190 FALSE, /* partial_inplace */
1191 0, /* src_mask */
1192 0x3fffc00, /* dst_mask */
1193 TRUE), /* pcrel_offset */
1194
1195 /* For the .uaquad pseudo. */
1196 HOWTO (R_SH_64, /* type */
1197 0, /* rightshift */
1198 4, /* size (0 = byte, 1 = short, 2 = long) */
1199 64, /* bitsize */
1200 FALSE, /* pc_relative */
1201 0, /* bitpos */
1202 complain_overflow_dont, /* complain_on_overflow */
1203 bfd_elf_generic_reloc, /* special_function */
1204 "R_SH_64", /* name */
1205 FALSE, /* partial_inplace */
1206 0, /* src_mask */
1207 ((bfd_vma) 0) - 1, /* dst_mask */
1208 FALSE), /* pcrel_offset */
1209
1210 /* For the .uaquad pseudo, (x - $). */
1211 HOWTO (R_SH_64_PCREL, /* type */
1212 48, /* rightshift */
1213 2, /* size (0 = byte, 1 = short, 2 = long) */
1214 64, /* bitsize */
1215 TRUE, /* pc_relative */
1216 10, /* bitpos */
1217 complain_overflow_dont, /* complain_on_overflow */
1218 bfd_elf_generic_reloc, /* special_function */
1219 "R_SH_64_PCREL", /* name */
1220 FALSE, /* partial_inplace */
1221 0, /* src_mask */
1222 ((bfd_vma) 0) - 1, /* dst_mask */
1223 TRUE), /* pcrel_offset */
1224
1225 };
1226
1227 /* This function is used for relocs which are only used for relaxing,
1228 which the linker should otherwise ignore. */
1229
1230 static bfd_reloc_status_type
1231 sh_elf64_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
1232 asymbol *symbol ATTRIBUTE_UNUSED,
1233 void *data ATTRIBUTE_UNUSED, asection *input_section,
1234 bfd *output_bfd,
1235 char **error_message ATTRIBUTE_UNUSED)
1236 {
1237 if (output_bfd != NULL)
1238 reloc_entry->address += input_section->output_offset;
1239 return bfd_reloc_ok;
1240 }
1241
1242 /* This function is used for normal relocs. This used to be like the COFF
1243 function, and is almost certainly incorrect for other ELF targets.
1244
1245 See sh_elf_reloc in elf32-sh.c for the original. */
1246
1247 static bfd_reloc_status_type
1248 sh_elf64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
1249 void *data, asection *input_section, bfd *output_bfd,
1250 char **error_message ATTRIBUTE_UNUSED)
1251 {
1252 unsigned long insn;
1253 bfd_vma sym_value;
1254 enum elf_sh_reloc_type r_type;
1255 bfd_vma addr = reloc_entry->address;
1256 bfd_byte *hit_data = addr + (bfd_byte *) data;
1257
1258 r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
1259
1260 if (output_bfd != NULL)
1261 {
1262 /* Partial linking--do nothing. */
1263 reloc_entry->address += input_section->output_offset;
1264 return bfd_reloc_ok;
1265 }
1266
1267 if (symbol_in != NULL
1268 && bfd_is_und_section (symbol_in->section))
1269 return bfd_reloc_undefined;
1270
1271 if (bfd_is_com_section (symbol_in->section))
1272 sym_value = 0;
1273 else
1274 sym_value = (symbol_in->value +
1275 symbol_in->section->output_section->vma +
1276 symbol_in->section->output_offset);
1277
1278 switch (r_type)
1279 {
1280 case R_SH_DIR32:
1281 insn = bfd_get_32 (abfd, hit_data);
1282 insn += sym_value + reloc_entry->addend;
1283 bfd_put_32 (abfd, insn, hit_data);
1284 break;
1285
1286 default:
1287 abort ();
1288 break;
1289 }
1290
1291 return bfd_reloc_ok;
1292 }
1293
1294 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
1295
1296 struct elf_reloc_map
1297 {
1298 bfd_reloc_code_real_type bfd_reloc_val;
1299 unsigned char elf_reloc_val;
1300 };
1301
1302 /* An array mapping BFD reloc codes to SH ELF relocs. */
1303
1304 static const struct elf_reloc_map sh64_reloc_map[] =
1305 {
1306 { BFD_RELOC_NONE, R_SH_NONE },
1307 { BFD_RELOC_32, R_SH_DIR32 },
1308 { BFD_RELOC_CTOR, R_SH_DIR32 },
1309 { BFD_RELOC_32_PCREL, R_SH_REL32 },
1310 { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
1311 { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
1312 { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
1313 { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
1314 { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
1315 { BFD_RELOC_SH_GOT_LOW16, R_SH_GOT_LOW16 },
1316 { BFD_RELOC_SH_GOT_MEDLOW16, R_SH_GOT_MEDLOW16 },
1317 { BFD_RELOC_SH_GOT_MEDHI16, R_SH_GOT_MEDHI16 },
1318 { BFD_RELOC_SH_GOT_HI16, R_SH_GOT_HI16 },
1319 { BFD_RELOC_SH_GOTPLT_LOW16, R_SH_GOTPLT_LOW16 },
1320 { BFD_RELOC_SH_GOTPLT_MEDLOW16, R_SH_GOTPLT_MEDLOW16 },
1321 { BFD_RELOC_SH_GOTPLT_MEDHI16, R_SH_GOTPLT_MEDHI16 },
1322 { BFD_RELOC_SH_GOTPLT_HI16, R_SH_GOTPLT_HI16 },
1323 { BFD_RELOC_SH_PLT_LOW16, R_SH_PLT_LOW16 },
1324 { BFD_RELOC_SH_PLT_MEDLOW16, R_SH_PLT_MEDLOW16 },
1325 { BFD_RELOC_SH_PLT_MEDHI16, R_SH_PLT_MEDHI16 },
1326 { BFD_RELOC_SH_PLT_HI16, R_SH_PLT_HI16 },
1327 { BFD_RELOC_SH_GOTOFF_LOW16, R_SH_GOTOFF_LOW16 },
1328 { BFD_RELOC_SH_GOTOFF_MEDLOW16, R_SH_GOTOFF_MEDLOW16 },
1329 { BFD_RELOC_SH_GOTOFF_MEDHI16, R_SH_GOTOFF_MEDHI16 },
1330 { BFD_RELOC_SH_GOTOFF_HI16, R_SH_GOTOFF_HI16 },
1331 { BFD_RELOC_SH_GOTPC_LOW16, R_SH_GOTPC_LOW16 },
1332 { BFD_RELOC_SH_GOTPC_MEDLOW16, R_SH_GOTPC_MEDLOW16 },
1333 { BFD_RELOC_SH_GOTPC_MEDHI16, R_SH_GOTPC_MEDHI16 },
1334 { BFD_RELOC_SH_GOTPC_HI16, R_SH_GOTPC_HI16 },
1335 { BFD_RELOC_SH_COPY64, R_SH_COPY64 },
1336 { BFD_RELOC_SH_GLOB_DAT64, R_SH_GLOB_DAT64 },
1337 { BFD_RELOC_SH_JMP_SLOT64, R_SH_JMP_SLOT64 },
1338 { BFD_RELOC_SH_RELATIVE64, R_SH_RELATIVE64 },
1339 { BFD_RELOC_SH_GOT10BY4, R_SH_GOT10BY4 },
1340 { BFD_RELOC_SH_GOT10BY8, R_SH_GOT10BY8 },
1341 { BFD_RELOC_SH_GOTPLT10BY4, R_SH_GOTPLT10BY4 },
1342 { BFD_RELOC_SH_GOTPLT10BY8, R_SH_GOTPLT10BY8 },
1343 { BFD_RELOC_SH_PT_16, R_SH_PT_16 },
1344 { BFD_RELOC_SH_SHMEDIA_CODE, R_SH_SHMEDIA_CODE },
1345 { BFD_RELOC_SH_IMMU5, R_SH_DIR5U },
1346 { BFD_RELOC_SH_IMMS6, R_SH_DIR6S },
1347 { BFD_RELOC_SH_IMMU6, R_SH_DIR6U },
1348 { BFD_RELOC_SH_IMMS10, R_SH_DIR10S },
1349 { BFD_RELOC_SH_IMMS10BY2, R_SH_DIR10SW },
1350 { BFD_RELOC_SH_IMMS10BY4, R_SH_DIR10SL },
1351 { BFD_RELOC_SH_IMMS10BY8, R_SH_DIR10SQ },
1352 { BFD_RELOC_SH_IMMS16, R_SH_IMMS16 },
1353 { BFD_RELOC_SH_IMMU16, R_SH_IMMU16 },
1354 { BFD_RELOC_SH_IMM_LOW16, R_SH_IMM_LOW16 },
1355 { BFD_RELOC_SH_IMM_LOW16_PCREL, R_SH_IMM_LOW16_PCREL },
1356 { BFD_RELOC_SH_IMM_MEDLOW16, R_SH_IMM_MEDLOW16 },
1357 { BFD_RELOC_SH_IMM_MEDLOW16_PCREL, R_SH_IMM_MEDLOW16_PCREL },
1358 { BFD_RELOC_SH_IMM_MEDHI16, R_SH_IMM_MEDHI16 },
1359 { BFD_RELOC_SH_IMM_MEDHI16_PCREL, R_SH_IMM_MEDHI16_PCREL },
1360 { BFD_RELOC_SH_IMM_HI16, R_SH_IMM_HI16 },
1361 { BFD_RELOC_SH_IMM_HI16_PCREL, R_SH_IMM_HI16_PCREL },
1362 { BFD_RELOC_64, R_SH_64 },
1363 { BFD_RELOC_64_PCREL, R_SH_64_PCREL },
1364 };
1365
1366 /* Given a BFD reloc code, return the howto structure for the
1367 corresponding SH ELf reloc. */
1368
1369 static reloc_howto_type *
1370 sh_elf64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1371 bfd_reloc_code_real_type code)
1372 {
1373 unsigned int i;
1374
1375 for (i = 0; i < sizeof (sh64_reloc_map) / sizeof (struct elf_reloc_map); i++)
1376 {
1377 if (sh64_reloc_map[i].bfd_reloc_val == code)
1378 return &sh_elf64_howto_table[(int) sh64_reloc_map[i].elf_reloc_val];
1379 }
1380
1381 return NULL;
1382 }
1383
1384 static reloc_howto_type *
1385 sh_elf64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1386 const char *r_name)
1387 {
1388 unsigned int i;
1389
1390 for (i = 0;
1391 i < sizeof (sh_elf64_howto_table) / sizeof (sh_elf64_howto_table[0]);
1392 i++)
1393 if (sh_elf64_howto_table[i].name != NULL
1394 && strcasecmp (sh_elf64_howto_table[i].name, r_name) == 0)
1395 return &sh_elf64_howto_table[i];
1396
1397 return NULL;
1398 }
1399
1400 /* Given an ELF reloc, fill in the howto field of a relent.
1401
1402 See sh_elf_info_to_howto in elf32-sh.c for the original. */
1403
1404 static void
1405 sh_elf64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
1406 Elf_Internal_Rela *dst)
1407 {
1408 unsigned int r;
1409
1410 r = ELF64_R_TYPE (dst->r_info);
1411
1412 BFD_ASSERT (r <= (unsigned int) R_SH_64_PCREL);
1413 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC || r > R_SH_LAST_INVALID_RELOC);
1414 BFD_ASSERT (r < R_SH_DIR8WPN || r > R_SH_LAST_INVALID_RELOC_2);
1415 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_3 || r > R_SH_GOTPLT32);
1416 BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_4 || r > R_SH_LAST_INVALID_RELOC_4);
1417
1418 cache_ptr->howto = &sh_elf64_howto_table[r];
1419 }
1420
1421 /* Relocate an SH ELF section.
1422
1423 See sh_elf_info_to_howto in elf32-sh.c for the original. */
1424
1425 static bfd_boolean
1426 sh_elf64_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
1427 struct bfd_link_info *info, bfd *input_bfd,
1428 asection *input_section, bfd_byte *contents,
1429 Elf_Internal_Rela *relocs,
1430 Elf_Internal_Sym *local_syms,
1431 asection **local_sections)
1432 {
1433 Elf_Internal_Shdr *symtab_hdr;
1434 struct elf_link_hash_entry **sym_hashes;
1435 Elf_Internal_Rela *rel, *relend;
1436 bfd *dynobj;
1437 bfd_vma *local_got_offsets;
1438 asection *sgot;
1439 asection *sgotplt;
1440 asection *splt;
1441 asection *sreloc;
1442 bfd_vma disp, dropped;
1443
1444 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1445 sym_hashes = elf_sym_hashes (input_bfd);
1446 dynobj = elf_hash_table (info)->dynobj;
1447 local_got_offsets = elf_local_got_offsets (input_bfd);
1448
1449 sgot = NULL;
1450 sgotplt = NULL;
1451 splt = NULL;
1452 sreloc = NULL;
1453
1454 rel = relocs;
1455 relend = relocs + input_section->reloc_count;
1456 for (; rel < relend; rel++)
1457 {
1458 int r_type;
1459 reloc_howto_type *howto;
1460 unsigned long r_symndx;
1461 Elf_Internal_Sym *sym;
1462 asection *sec;
1463 struct elf_link_hash_entry *h;
1464 bfd_vma relocation;
1465 bfd_vma addend = (bfd_vma)0;
1466 bfd_reloc_status_type r;
1467 int seen_stt_datalabel = 0;
1468
1469 r_symndx = ELF64_R_SYM (rel->r_info);
1470
1471 r_type = ELF64_R_TYPE (rel->r_info);
1472
1473 if (r_type == (int) R_SH_NONE)
1474 continue;
1475
1476 if (r_type < 0
1477 || r_type > R_SH_64_PCREL
1478 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
1479 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
1480 || (r_type >= (int) R_SH_DIR8WPN
1481 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
1482 || (r_type >= (int) R_SH_GNU_VTINHERIT
1483 && r_type <= (int) R_SH_PSHL)
1484 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
1485 && r_type <= R_SH_GOTPLT32)
1486 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
1487 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4))
1488 {
1489 bfd_set_error (bfd_error_bad_value);
1490 return FALSE;
1491 }
1492
1493 howto = sh_elf64_howto_table + r_type;
1494
1495 h = NULL;
1496 sym = NULL;
1497 sec = NULL;
1498 relocation = 0;
1499 if (r_symndx < symtab_hdr->sh_info)
1500 {
1501 sym = local_syms + r_symndx;
1502 sec = local_sections[r_symndx];
1503 relocation = ((sec->output_section->vma
1504 + sec->output_offset
1505 + sym->st_value)
1506 | ((sym->st_other & STO_SH5_ISA32) != 0));
1507
1508 /* A local symbol never has STO_SH5_ISA32, so we don't need
1509 datalabel processing here. Make sure this does not change
1510 without notice. */
1511 if ((sym->st_other & STO_SH5_ISA32) != 0)
1512 ((*info->callbacks->reloc_dangerous)
1513 (info,
1514 _("Unexpected STO_SH5_ISA32 on local symbol is not handled"),
1515 input_bfd, input_section, rel->r_offset));
1516
1517 if (sec != NULL && elf_discarded_section (sec))
1518 /* Handled below. */
1519 ;
1520 else if (info->relocatable)
1521 {
1522 /* This is a relocatable link. We don't have to change
1523 anything, unless the reloc is against a section symbol,
1524 in which case we have to adjust according to where the
1525 section symbol winds up in the output section. */
1526 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1527 goto final_link_relocate;
1528
1529 continue;
1530 }
1531 else if (! howto->partial_inplace)
1532 {
1533 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1534 relocation |= ((sym->st_other & STO_SH5_ISA32) != 0);
1535 }
1536 else if ((sec->flags & SEC_MERGE)
1537 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1538 {
1539 asection *msec;
1540
1541 if (howto->rightshift || howto->src_mask != 0xffffffff)
1542 {
1543 (*_bfd_error_handler)
1544 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
1545 input_bfd, input_section,
1546 (long) rel->r_offset, howto->name);
1547 return FALSE;
1548 }
1549
1550 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
1551 msec = sec;
1552 addend =
1553 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
1554 - relocation;
1555 addend += msec->output_section->vma + msec->output_offset;
1556 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
1557 addend = 0;
1558 }
1559 }
1560 else
1561 {
1562 /* ??? Could we use the RELOC_FOR_GLOBAL_SYMBOL macro here ? */
1563
1564 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1565 while (h->root.type == bfd_link_hash_indirect
1566 || h->root.type == bfd_link_hash_warning)
1567 {
1568 /* If the reference passes a symbol marked with
1569 STT_DATALABEL, then any STO_SH5_ISA32 on the final value
1570 doesn't count. */
1571 seen_stt_datalabel |= h->type == STT_DATALABEL;
1572 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1573 }
1574
1575 if (h->root.type == bfd_link_hash_defined
1576 || h->root.type == bfd_link_hash_defweak)
1577 {
1578 sec = h->root.u.def.section;
1579 /* In these cases, we don't need the relocation value.
1580 We check specially because in some obscure cases
1581 sec->output_section will be NULL. */
1582 if (r_type == R_SH_GOTPC_LOW16
1583 || r_type == R_SH_GOTPC_MEDLOW16
1584 || r_type == R_SH_GOTPC_MEDHI16
1585 || r_type == R_SH_GOTPC_HI16
1586 || ((r_type == R_SH_PLT_LOW16
1587 || r_type == R_SH_PLT_MEDLOW16
1588 || r_type == R_SH_PLT_MEDHI16
1589 || r_type == R_SH_PLT_HI16)
1590 && h->plt.offset != (bfd_vma) -1)
1591 || ((r_type == R_SH_GOT_LOW16
1592 || r_type == R_SH_GOT_MEDLOW16
1593 || r_type == R_SH_GOT_MEDHI16
1594 || r_type == R_SH_GOT_HI16)
1595 && elf_hash_table (info)->dynamic_sections_created
1596 && (! info->shared
1597 || (! info->symbolic && h->dynindx != -1)
1598 || !h->def_regular))
1599 /* The cases above are those in which relocation is
1600 overwritten in the switch block below. The cases
1601 below are those in which we must defer relocation
1602 to run-time, because we can't resolve absolute
1603 addresses when creating a shared library. */
1604 || (info->shared
1605 && ((! info->symbolic && h->dynindx != -1)
1606 || !h->def_regular)
1607 && ((r_type == R_SH_64
1608 && !(ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
1609 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN))
1610 || r_type == R_SH_64_PCREL)
1611 && ((input_section->flags & SEC_ALLOC) != 0
1612 /* DWARF will emit R_SH_DIR32 relocations in its
1613 sections against symbols defined externally
1614 in shared libraries. We can't do anything
1615 with them here. */
1616 || (input_section->flags & SEC_DEBUGGING) != 0))
1617 /* Dynamic relocs are not propagated for SEC_DEBUGGING
1618 sections because such sections are not SEC_ALLOC and
1619 thus ld.so will not process them. */
1620 || (sec->output_section == NULL
1621 && ((input_section->flags & SEC_DEBUGGING) != 0
1622 && h->def_dynamic)))
1623 ;
1624 else if (sec->output_section != NULL)
1625 relocation = ((h->root.u.def.value
1626 + sec->output_section->vma
1627 + sec->output_offset)
1628 /* A STO_SH5_ISA32 causes a "bitor 1" to the
1629 symbol value, unless we've seen
1630 STT_DATALABEL on the way to it. */
1631 | ((h->other & STO_SH5_ISA32) != 0
1632 && ! seen_stt_datalabel));
1633 else if (!info->relocatable)
1634 {
1635 (*_bfd_error_handler)
1636 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
1637 input_bfd,
1638 input_section,
1639 (long) rel->r_offset,
1640 howto->name,
1641 h->root.root.string);
1642 }
1643 }
1644 else if (h->root.type == bfd_link_hash_undefweak)
1645 ;
1646 else if (info->unresolved_syms_in_objects == RM_IGNORE
1647 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
1648 ;
1649 else if (!info->relocatable)
1650 {
1651 if (! ((*info->callbacks->undefined_symbol)
1652 (info, h->root.root.string, input_bfd,
1653 input_section, rel->r_offset,
1654 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
1655 || ELF_ST_VISIBILITY (h->other)))))
1656 return FALSE;
1657 }
1658 }
1659
1660 if (sec != NULL && elf_discarded_section (sec))
1661 {
1662 /* For relocs against symbols from removed linkonce sections,
1663 or sections discarded by a linker script, we just want the
1664 section contents zeroed. Avoid any special processing. */
1665 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1666 rel->r_info = 0;
1667 rel->r_addend = 0;
1668 continue;
1669 }
1670
1671 if (info->relocatable)
1672 continue;
1673
1674 disp = (relocation
1675 - input_section->output_section->vma
1676 - input_section->output_offset
1677 - rel->r_offset);
1678 dropped = 0;
1679 switch ((int)r_type)
1680 {
1681 case R_SH_PT_16: dropped = disp & 2; break;
1682 case R_SH_DIR10SW: dropped = disp & 1; break;
1683 case R_SH_DIR10SL: dropped = disp & 3; break;
1684 case R_SH_DIR10SQ: dropped = disp & 7; break;
1685 }
1686 if (dropped != 0)
1687 {
1688 (*_bfd_error_handler)
1689 (_("%s: error: unaligned relocation type %d at %08x reloc %08x\n"),
1690 bfd_get_filename (input_bfd), (int)r_type, (unsigned)rel->r_offset, (unsigned)relocation);
1691 bfd_set_error (bfd_error_bad_value);
1692 return FALSE;
1693 }
1694 switch ((int)r_type)
1695 {
1696 case R_SH_64:
1697 case R_SH_64_PCREL:
1698 if (info->shared
1699 && (input_section->flags & SEC_ALLOC) != 0
1700 && (r_type != R_SH_64_PCREL
1701 || (h != NULL
1702 && h->dynindx != -1
1703 && (! info->symbolic
1704 || !h->def_regular))))
1705 {
1706 Elf_Internal_Rela outrel;
1707 bfd_byte *loc;
1708 bfd_boolean skip, relocate;
1709
1710 /* When generating a shared object, these relocations
1711 are copied into the output file to be resolved at run
1712 time. */
1713
1714 if (sreloc == NULL)
1715 {
1716 sreloc = _bfd_elf_get_dynamic_reloc_section
1717 (input_bfd, input_section, /*rela?*/ TRUE);
1718 if (sreloc == NULL)
1719 return FALSE;
1720 }
1721
1722 skip = FALSE;
1723 relocate = FALSE;
1724
1725 outrel.r_offset
1726 = _bfd_elf_section_offset (output_bfd, info,
1727 input_section, rel->r_offset);
1728
1729 if (outrel.r_offset == (bfd_vma) -1)
1730 skip = TRUE;
1731 else if (outrel.r_offset == (bfd_vma) -2)
1732 skip = TRUE, relocate = TRUE;
1733
1734 outrel.r_offset += (input_section->output_section->vma
1735 + input_section->output_offset);
1736
1737 if (skip)
1738 memset (&outrel, 0, sizeof outrel);
1739 else if (r_type == R_SH_64_PCREL)
1740 {
1741 BFD_ASSERT (h != NULL && h->dynindx != -1);
1742 outrel.r_info = ELF64_R_INFO (h->dynindx, R_SH_64_PCREL);
1743 outrel.r_addend = rel->r_addend;
1744 }
1745 else
1746 {
1747 /* h->dynindx may be -1 if this symbol was marked to
1748 become local. */
1749 if (h == NULL
1750 || ((info->symbolic || h->dynindx == -1)
1751 && h->def_regular))
1752 {
1753 relocate = TRUE;
1754 outrel.r_info = ELF64_R_INFO (0, R_SH_RELATIVE64);
1755 outrel.r_addend = relocation + rel->r_addend;
1756 }
1757 else
1758 {
1759 BFD_ASSERT (h->dynindx != -1);
1760 outrel.r_info = ELF64_R_INFO (h->dynindx, R_SH_64);
1761 outrel.r_addend = relocation + rel->r_addend;
1762 }
1763 }
1764
1765 loc = sreloc->contents;
1766 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
1767 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
1768
1769 /* If this reloc is against an external symbol, we do
1770 not want to fiddle with the addend. Otherwise, we
1771 need to include the symbol value so that it becomes
1772 an addend for the dynamic reloc. */
1773 if (! relocate)
1774 continue;
1775 }
1776 else if (r_type == R_SH_64)
1777 addend = rel->r_addend;
1778 goto final_link_relocate;
1779
1780 case R_SH_GOTPLT_LOW16:
1781 case R_SH_GOTPLT_MEDLOW16:
1782 case R_SH_GOTPLT_MEDHI16:
1783 case R_SH_GOTPLT_HI16:
1784 case R_SH_GOTPLT10BY4:
1785 case R_SH_GOTPLT10BY8:
1786 /* Relocation is to the entry for this symbol in the
1787 procedure linkage table. */
1788
1789 if (h == NULL
1790 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
1791 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
1792 || ! info->shared
1793 || info->symbolic
1794 || h->dynindx == -1
1795 || h->plt.offset == (bfd_vma) -1
1796 || h->got.offset != (bfd_vma) -1)
1797 goto force_got;
1798
1799 /* Relocation is to the entry for this symbol in the global
1800 offset table extension for the procedure linkage table. */
1801 if (sgotplt == NULL)
1802 {
1803 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1804 BFD_ASSERT (sgotplt != NULL);
1805 }
1806
1807 relocation = (sgotplt->output_offset
1808 + ((h->plt.offset / elf_sh64_sizeof_plt (info)
1809 - 1 + 3) * 8));
1810
1811 relocation -= GOT_BIAS;
1812
1813 goto final_link_relocate;
1814
1815 force_got:
1816 case R_SH_GOT_LOW16:
1817 case R_SH_GOT_MEDLOW16:
1818 case R_SH_GOT_MEDHI16:
1819 case R_SH_GOT_HI16:
1820 case R_SH_GOT10BY4:
1821 case R_SH_GOT10BY8:
1822 /* Relocation is to the entry for this symbol in the global
1823 offset table. */
1824 if (sgot == NULL)
1825 {
1826 sgot = bfd_get_section_by_name (dynobj, ".got");
1827 BFD_ASSERT (sgot != NULL);
1828 }
1829
1830 if (h != NULL)
1831 {
1832 bfd_vma off;
1833
1834 off = h->got.offset;
1835 if (seen_stt_datalabel)
1836 {
1837 struct elf_sh64_link_hash_entry *hsh;
1838
1839 hsh = (struct elf_sh64_link_hash_entry *)h;
1840 off = hsh->datalabel_got_offset;
1841 }
1842 BFD_ASSERT (off != (bfd_vma) -1);
1843
1844 if (! elf_hash_table (info)->dynamic_sections_created
1845 || (info->shared
1846 && (info->symbolic || h->dynindx == -1
1847 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
1848 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
1849 && h->def_regular))
1850 {
1851 /* This is actually a static link, or it is a
1852 -Bsymbolic link and the symbol is defined
1853 locally, or the symbol was forced to be local
1854 because of a version file. We must initialize
1855 this entry in the global offset table. Since the
1856 offset must always be a multiple of 4, we use the
1857 least significant bit to record whether we have
1858 initialized it already.
1859
1860 When doing a dynamic link, we create a .rela.got
1861 relocation entry to initialize the value. This
1862 is done in the finish_dynamic_symbol routine. */
1863 if ((off & 1) != 0)
1864 off &= ~1;
1865 else
1866 {
1867 bfd_put_64 (output_bfd, relocation,
1868 sgot->contents + off);
1869 if (seen_stt_datalabel)
1870 {
1871 struct elf_sh64_link_hash_entry *hsh;
1872
1873 hsh = (struct elf_sh64_link_hash_entry *)h;
1874 hsh->datalabel_got_offset |= 1;
1875 }
1876 else
1877 h->got.offset |= 1;
1878 }
1879 }
1880
1881 relocation = sgot->output_offset + off;
1882 }
1883 else
1884 {
1885 bfd_vma off;
1886
1887 if (rel->r_addend)
1888 {
1889 BFD_ASSERT (local_got_offsets != NULL
1890 && (local_got_offsets[symtab_hdr->sh_info
1891 + r_symndx]
1892 != (bfd_vma) -1));
1893
1894 off = local_got_offsets[symtab_hdr->sh_info
1895 + r_symndx];
1896 }
1897 else
1898 {
1899 BFD_ASSERT (local_got_offsets != NULL
1900 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1901
1902 off = local_got_offsets[r_symndx];
1903 }
1904
1905 /* The offset must always be a multiple of 8. We use
1906 the least significant bit to record whether we have
1907 already generated the necessary reloc. */
1908 if ((off & 1) != 0)
1909 off &= ~1;
1910 else
1911 {
1912 bfd_put_64 (output_bfd, relocation, sgot->contents + off);
1913
1914 if (info->shared)
1915 {
1916 asection *s;
1917 Elf_Internal_Rela outrel;
1918 bfd_byte *loc;
1919
1920 s = bfd_get_section_by_name (dynobj, ".rela.got");
1921 BFD_ASSERT (s != NULL);
1922
1923 outrel.r_offset = (sgot->output_section->vma
1924 + sgot->output_offset
1925 + off);
1926 outrel.r_info = ELF64_R_INFO (0, R_SH_RELATIVE64);
1927 outrel.r_addend = relocation;
1928 loc = s->contents;
1929 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
1930 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
1931 }
1932
1933 if (rel->r_addend)
1934 local_got_offsets[symtab_hdr->sh_info + r_symndx] |= 1;
1935 else
1936 local_got_offsets[r_symndx] |= 1;
1937 }
1938
1939 relocation = sgot->output_offset + off;
1940 }
1941
1942 relocation -= GOT_BIAS;
1943
1944 goto final_link_relocate;
1945
1946 case R_SH_GOTOFF_LOW16:
1947 case R_SH_GOTOFF_MEDLOW16:
1948 case R_SH_GOTOFF_MEDHI16:
1949 case R_SH_GOTOFF_HI16:
1950 /* Relocation is relative to the start of the global offset
1951 table. */
1952
1953 if (sgot == NULL)
1954 {
1955 sgot = bfd_get_section_by_name (dynobj, ".got");
1956 BFD_ASSERT (sgot != NULL);
1957 }
1958
1959 /* Note that sgot->output_offset is not involved in this
1960 calculation. We always want the start of .got. If we
1961 defined _GLOBAL_OFFSET_TABLE in a different way, as is
1962 permitted by the ABI, we might have to change this
1963 calculation. */
1964 relocation -= sgot->output_section->vma;
1965
1966 relocation -= GOT_BIAS;
1967
1968 addend = rel->r_addend;
1969
1970 goto final_link_relocate;
1971
1972 case R_SH_GOTPC_LOW16:
1973 case R_SH_GOTPC_MEDLOW16:
1974 case R_SH_GOTPC_MEDHI16:
1975 case R_SH_GOTPC_HI16:
1976 /* Use global offset table as symbol value. */
1977
1978 if (sgot == NULL)
1979 {
1980 sgot = bfd_get_section_by_name (dynobj, ".got");
1981 BFD_ASSERT (sgot != NULL);
1982 }
1983
1984 relocation = sgot->output_section->vma;
1985
1986 relocation += GOT_BIAS;
1987
1988 addend = rel->r_addend;
1989
1990 goto final_link_relocate;
1991
1992 case R_SH_PLT_LOW16:
1993 case R_SH_PLT_MEDLOW16:
1994 case R_SH_PLT_MEDHI16:
1995 case R_SH_PLT_HI16:
1996 /* Relocation is to the entry for this symbol in the
1997 procedure linkage table. */
1998
1999 /* Resolve a PLT reloc against a local symbol directly,
2000 without using the procedure linkage table. */
2001 if (h == NULL)
2002 goto final_link_relocate;
2003
2004 if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
2005 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
2006 goto final_link_relocate;
2007
2008 if (h->plt.offset == (bfd_vma) -1)
2009 {
2010 /* We didn't make a PLT entry for this symbol. This
2011 happens when statically linking PIC code, or when
2012 using -Bsymbolic. */
2013 goto final_link_relocate;
2014 }
2015
2016 if (splt == NULL)
2017 {
2018 splt = bfd_get_section_by_name (dynobj, ".plt");
2019 BFD_ASSERT (splt != NULL);
2020 }
2021
2022 relocation = (splt->output_section->vma
2023 + splt->output_offset
2024 + h->plt.offset);
2025 relocation++;
2026
2027 addend = rel->r_addend;
2028
2029 goto final_link_relocate;
2030
2031 case R_SH_DIR32:
2032 case R_SH_SHMEDIA_CODE:
2033 case R_SH_PT_16:
2034 case R_SH_DIR5U:
2035 case R_SH_DIR6S:
2036 case R_SH_DIR6U:
2037 case R_SH_DIR10S:
2038 case R_SH_DIR10SW:
2039 case R_SH_DIR10SL:
2040 case R_SH_DIR10SQ:
2041 case R_SH_IMMS16:
2042 case R_SH_IMMU16:
2043 case R_SH_IMM_LOW16:
2044 case R_SH_IMM_LOW16_PCREL:
2045 case R_SH_IMM_MEDLOW16:
2046 case R_SH_IMM_MEDLOW16_PCREL:
2047 case R_SH_IMM_MEDHI16:
2048 case R_SH_IMM_MEDHI16_PCREL:
2049 case R_SH_IMM_HI16:
2050 case R_SH_IMM_HI16_PCREL:
2051 addend = rel->r_addend;
2052 /* Fall through. */
2053 case R_SH_REL32:
2054 final_link_relocate:
2055 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2056 contents, rel->r_offset,
2057 relocation, addend);
2058 break;
2059
2060 default:
2061 bfd_set_error (bfd_error_bad_value);
2062 return FALSE;
2063
2064 }
2065
2066 if (r != bfd_reloc_ok)
2067 {
2068 switch (r)
2069 {
2070 default:
2071 case bfd_reloc_outofrange:
2072 abort ();
2073 case bfd_reloc_overflow:
2074 {
2075 const char *name;
2076
2077 if (h != NULL)
2078 name = NULL;
2079 else
2080 {
2081 name = (bfd_elf_string_from_elf_section
2082 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2083 if (name == NULL)
2084 return FALSE;
2085 if (*name == '\0')
2086 name = bfd_section_name (input_bfd, sec);
2087 }
2088 if (! ((*info->callbacks->reloc_overflow)
2089 (info, (h ? &h->root : NULL), name, howto->name,
2090 (bfd_vma) 0, input_bfd, input_section,
2091 rel->r_offset)))
2092 return FALSE;
2093 }
2094 break;
2095 }
2096 }
2097 }
2098
2099 return TRUE;
2100 }
2101
2102 /* This is a version of bfd_generic_get_relocated_section_contents
2103 that uses sh_elf64_relocate_section.
2104
2105 See sh_elf_relocate_section in elf32-sh.c for the original. */
2106
2107 static bfd_byte *
2108 sh_elf64_get_relocated_section_contents (bfd *output_bfd,
2109 struct bfd_link_info *link_info,
2110 struct bfd_link_order *link_order,
2111 bfd_byte *data,
2112 bfd_boolean relocatable,
2113 asymbol **symbols)
2114 {
2115 Elf_Internal_Shdr *symtab_hdr;
2116 asection *input_section = link_order->u.indirect.section;
2117 bfd *input_bfd = input_section->owner;
2118 asection **sections = NULL;
2119 Elf_Internal_Rela *internal_relocs = NULL;
2120 Elf_Internal_Sym *isymbuf = NULL;
2121
2122 /* We only need to handle the case of relaxing, or of having a
2123 particular set of section contents, specially. */
2124 if (relocatable
2125 || elf_section_data (input_section)->this_hdr.contents == NULL)
2126 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
2127 link_order, data,
2128 relocatable,
2129 symbols);
2130
2131 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2132
2133 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
2134 input_section->size);
2135
2136 if ((input_section->flags & SEC_RELOC) != 0
2137 && input_section->reloc_count > 0)
2138 {
2139 Elf_Internal_Sym *isymp;
2140 Elf_Internal_Sym *isymend;
2141 asection **secpp;
2142
2143 /* Read this BFD's local symbols. */
2144 if (symtab_hdr->sh_info != 0)
2145 {
2146 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2147 if (isymbuf == NULL)
2148 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2149 symtab_hdr->sh_info, 0,
2150 NULL, NULL, NULL);
2151 if (isymbuf == NULL)
2152 goto error_return;
2153 }
2154
2155 internal_relocs = (_bfd_elf_link_read_relocs
2156 (input_bfd, input_section, NULL,
2157 (Elf_Internal_Rela *) NULL, FALSE));
2158 if (internal_relocs == NULL)
2159 goto error_return;
2160
2161 sections = (asection **) bfd_malloc (symtab_hdr->sh_info
2162 * sizeof (asection *));
2163 if (sections == NULL && symtab_hdr->sh_info > 0)
2164 goto error_return;
2165
2166 secpp = sections;
2167 isymend = isymbuf + symtab_hdr->sh_info;
2168 for (isymp = isymbuf; isymp < isymend; ++isymp, ++secpp)
2169 {
2170 asection *isec;
2171
2172 if (isymp->st_shndx == SHN_UNDEF)
2173 isec = bfd_und_section_ptr;
2174 else if (isymp->st_shndx == SHN_ABS)
2175 isec = bfd_abs_section_ptr;
2176 else if (isymp->st_shndx == SHN_COMMON)
2177 isec = bfd_com_section_ptr;
2178 else
2179 isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
2180
2181 *secpp = isec;
2182 }
2183
2184 if (! sh_elf64_relocate_section (output_bfd, link_info, input_bfd,
2185 input_section, data, internal_relocs,
2186 isymbuf, sections))
2187 goto error_return;
2188
2189 if (sections != NULL)
2190 free (sections);
2191 if (internal_relocs != elf_section_data (input_section)->relocs)
2192 free (internal_relocs);
2193 if (isymbuf != NULL
2194 && (unsigned char *) isymbuf != symtab_hdr->contents)
2195 free (isymbuf);
2196 }
2197
2198 return data;
2199
2200 error_return:
2201 if (sections != NULL)
2202 free (sections);
2203 if (internal_relocs != NULL
2204 && internal_relocs != elf_section_data (input_section)->relocs)
2205 free (internal_relocs);
2206 if (isymbuf != NULL
2207 && (unsigned char *) isymbuf != symtab_hdr->contents)
2208 free (isymbuf);
2209 return NULL;
2210 }
2211
2212 /* Set the SHF_SH5_ISA32 flag for ISA SHmedia code sections. */
2213
2214 static bfd_boolean
2215 sh64_elf64_fake_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2216 Elf_Internal_Shdr *elf_section_hdr,
2217 asection *asect)
2218 {
2219 /* Code sections can only contain SH64 code, so mark them as such. */
2220 if (bfd_get_section_flags (output_bfd, asect) & SEC_CODE)
2221 elf_section_hdr->sh_flags |= SHF_SH5_ISA32;
2222
2223 return TRUE;
2224 }
2225
2226 static bfd_boolean
2227 sh_elf64_set_mach_from_flags (bfd *abfd)
2228 {
2229 flagword flags = elf_elfheader (abfd)->e_flags;
2230
2231 switch (flags & EF_SH_MACH_MASK)
2232 {
2233 case EF_SH5:
2234 /* Just one, but keep the switch construct to make additions easy. */
2235 bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh5);
2236 break;
2237
2238 default:
2239 bfd_set_error (bfd_error_wrong_format);
2240 return FALSE;
2241 }
2242 return TRUE;
2243 }
2244
2245 /* Function to keep SH64 specific file flags.
2246
2247 See sh64_elf_set_private_flags in elf32-sh64.c for the original. */
2248
2249 static bfd_boolean
2250 sh_elf64_set_private_flags (bfd *abfd, flagword flags)
2251 {
2252 BFD_ASSERT (! elf_flags_init (abfd)
2253 || elf_elfheader (abfd)->e_flags == flags);
2254
2255 elf_elfheader (abfd)->e_flags = flags;
2256 elf_flags_init (abfd) = TRUE;
2257 return sh_elf64_set_mach_from_flags (abfd);
2258 }
2259
2260 /* Copy the SHF_SH5_ISA32 attribute that we keep on all sections with
2261 code, to keep attributes the same as for SHmedia in 32-bit ELF. */
2262
2263 static bfd_boolean
2264 sh_elf64_copy_private_data_internal (bfd *ibfd, bfd *obfd)
2265 {
2266 Elf_Internal_Shdr **o_shdrp;
2267 asection *isec;
2268 asection *osec;
2269
2270 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2271 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2272 return TRUE;
2273
2274 o_shdrp = elf_elfsections (obfd);
2275 for (osec = obfd->sections; osec; osec = osec->next)
2276 {
2277 int oIndex = ((struct bfd_elf_section_data *) elf_section_data (osec))->this_idx;
2278 for (isec = ibfd->sections; isec; isec = isec->next)
2279 {
2280 if (strcmp (osec->name, isec->name) == 0)
2281 {
2282 /* Note that we're not disallowing mixing data and code. */
2283 if ((elf_section_data (isec)->this_hdr.sh_flags
2284 & SHF_SH5_ISA32) != 0)
2285 o_shdrp[oIndex]->sh_flags |= SHF_SH5_ISA32;
2286 break;
2287 }
2288 }
2289 }
2290
2291 /* Copy object attributes. */
2292 _bfd_elf_copy_obj_attributes (ibfd, obfd);
2293
2294 return sh_elf64_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags);
2295 }
2296
2297 static bfd_boolean
2298 sh_elf64_copy_private_data (bfd *ibfd, bfd *obfd)
2299 {
2300 return sh_elf64_copy_private_data_internal (ibfd, obfd);
2301 }
2302
2303 static bfd_boolean
2304 sh_elf64_merge_private_data (bfd *ibfd, bfd *obfd)
2305 {
2306 flagword old_flags, new_flags;
2307
2308 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
2309 return FALSE;
2310
2311 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2312 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2313 return TRUE;
2314
2315 if (bfd_get_arch_size (ibfd) != bfd_get_arch_size (obfd))
2316 {
2317 const char *msg;
2318
2319 if (bfd_get_arch_size (ibfd) == 32
2320 && bfd_get_arch_size (obfd) == 64)
2321 msg = _("%s: compiled as 32-bit object and %s is 64-bit");
2322 else if (bfd_get_arch_size (ibfd) == 64
2323 && bfd_get_arch_size (obfd) == 32)
2324 msg = _("%s: compiled as 64-bit object and %s is 32-bit");
2325 else
2326 msg = _("%s: object size does not match that of target %s");
2327
2328 (*_bfd_error_handler) (msg, bfd_get_filename (ibfd),
2329 bfd_get_filename (obfd));
2330 bfd_set_error (bfd_error_wrong_format);
2331 return FALSE;
2332 }
2333
2334 old_flags = elf_elfheader (obfd)->e_flags;
2335 new_flags = elf_elfheader (ibfd)->e_flags;
2336 if (! elf_flags_init (obfd))
2337 {
2338 /* This happens when ld starts out with a 'blank' output file. */
2339 elf_flags_init (obfd) = TRUE;
2340 elf_elfheader (obfd)->e_flags = old_flags = new_flags;
2341 }
2342 /* We don't allow linking in anything else than SH64 code, and since
2343 this is a 64-bit ELF, we assume the 64-bit ABI is used. Add code
2344 here as things change. */
2345 else if ((new_flags & EF_SH_MACH_MASK) != EF_SH5)
2346 {
2347 (*_bfd_error_handler)
2348 ("%s: does not use the SH64 64-bit ABI as previous modules do",
2349 bfd_get_filename (ibfd));
2350 bfd_set_error (bfd_error_bad_value);
2351 return FALSE;
2352 }
2353
2354 sh_elf64_copy_private_data_internal (ibfd, obfd);
2355
2356 /* I can't think of anything sane other than old_flags being EF_SH5 and
2357 that we need to preserve that. */
2358 elf_elfheader (obfd)->e_flags = old_flags;
2359
2360 return sh_elf64_set_mach_from_flags (obfd);
2361 }
2362
2363 /* Return the section that should be marked against GC for a given
2364 relocation. */
2365
2366 static asection *
2367 sh_elf64_gc_mark_hook (asection *sec,
2368 struct bfd_link_info *info,
2369 Elf_Internal_Rela *rel,
2370 struct elf_link_hash_entry *h,
2371 Elf_Internal_Sym *sym)
2372 {
2373 if (h != NULL)
2374 switch (ELF64_R_TYPE (rel->r_info))
2375 {
2376 case R_SH_GNU_VTINHERIT:
2377 case R_SH_GNU_VTENTRY:
2378 return NULL;
2379 }
2380
2381 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2382 }
2383
2384 /* Look through the relocs for a section during the first phase.
2385 Since we don't do .gots or .plts, we just need to consider the
2386 virtual table relocs for gc. */
2387
2388 static bfd_boolean
2389 sh_elf64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2390 asection *sec, const Elf_Internal_Rela *relocs)
2391 {
2392 Elf_Internal_Shdr *symtab_hdr;
2393 struct elf_link_hash_entry **sym_hashes;
2394 const Elf_Internal_Rela *rel;
2395 const Elf_Internal_Rela *rel_end;
2396 bfd *dynobj;
2397 bfd_vma *local_got_offsets;
2398 asection *sgot;
2399 asection *srelgot;
2400 asection *sreloc;
2401
2402 sgot = NULL;
2403 srelgot = NULL;
2404 sreloc = NULL;
2405
2406 if (info->relocatable)
2407 return TRUE;
2408
2409 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2410 sym_hashes = elf_sym_hashes (abfd);
2411
2412 dynobj = elf_hash_table (info)->dynobj;
2413 local_got_offsets = elf_local_got_offsets (abfd);
2414
2415 rel_end = relocs + sec->reloc_count;
2416 for (rel = relocs; rel < rel_end; rel++)
2417 {
2418 struct elf_link_hash_entry *h;
2419 unsigned long r_symndx;
2420
2421 r_symndx = ELF64_R_SYM (rel->r_info);
2422 if (r_symndx < symtab_hdr->sh_info)
2423 h = NULL;
2424 else
2425 {
2426 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2427 while (h->root.type == bfd_link_hash_indirect
2428 || h->root.type == bfd_link_hash_warning)
2429 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2430 }
2431
2432 /* Some relocs require a global offset table. */
2433 if (dynobj == NULL)
2434 {
2435 switch (ELF64_R_TYPE (rel->r_info))
2436 {
2437 case R_SH_GOTPLT_LOW16:
2438 case R_SH_GOTPLT_MEDLOW16:
2439 case R_SH_GOTPLT_MEDHI16:
2440 case R_SH_GOTPLT_HI16:
2441 case R_SH_GOTPLT10BY4:
2442 case R_SH_GOTPLT10BY8:
2443 case R_SH_GOT_LOW16:
2444 case R_SH_GOT_MEDLOW16:
2445 case R_SH_GOT_MEDHI16:
2446 case R_SH_GOT_HI16:
2447 case R_SH_GOT10BY4:
2448 case R_SH_GOT10BY8:
2449 case R_SH_GOTOFF_LOW16:
2450 case R_SH_GOTOFF_MEDLOW16:
2451 case R_SH_GOTOFF_MEDHI16:
2452 case R_SH_GOTOFF_HI16:
2453 case R_SH_GOTPC_LOW16:
2454 case R_SH_GOTPC_MEDLOW16:
2455 case R_SH_GOTPC_MEDHI16:
2456 case R_SH_GOTPC_HI16:
2457 elf_hash_table (info)->dynobj = dynobj = abfd;
2458 if (! _bfd_elf_create_got_section (dynobj, info))
2459 return FALSE;
2460 break;
2461
2462 default:
2463 break;
2464 }
2465 }
2466
2467 switch (ELF64_R_TYPE (rel->r_info))
2468 {
2469 /* This relocation describes the C++ object vtable hierarchy.
2470 Reconstruct it for later use during GC. */
2471 case R_SH_GNU_VTINHERIT:
2472 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2473 return FALSE;
2474 break;
2475
2476 /* This relocation describes which C++ vtable entries are actually
2477 used. Record for later use during GC. */
2478 case R_SH_GNU_VTENTRY:
2479 BFD_ASSERT (h != NULL);
2480 if (h != NULL
2481 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2482 return FALSE;
2483 break;
2484
2485 force_got:
2486 case R_SH_GOT_LOW16:
2487 case R_SH_GOT_MEDLOW16:
2488 case R_SH_GOT_MEDHI16:
2489 case R_SH_GOT_HI16:
2490 case R_SH_GOT10BY4:
2491 case R_SH_GOT10BY8:
2492 /* This symbol requires a global offset table entry. */
2493
2494 if (sgot == NULL)
2495 {
2496 sgot = bfd_get_section_by_name (dynobj, ".got");
2497 BFD_ASSERT (sgot != NULL);
2498 }
2499
2500 if (srelgot == NULL
2501 && (h != NULL || info->shared))
2502 {
2503 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2504 if (srelgot == NULL)
2505 {
2506 srelgot = bfd_make_section_with_flags (dynobj,
2507 ".rela.got",
2508 (SEC_ALLOC
2509 | SEC_LOAD
2510 | SEC_HAS_CONTENTS
2511 | SEC_IN_MEMORY
2512 | SEC_LINKER_CREATED
2513 | SEC_READONLY));
2514 if (srelgot == NULL
2515 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
2516 return FALSE;
2517 }
2518 }
2519
2520 if (h != NULL)
2521 {
2522 if (h->type == STT_DATALABEL)
2523 {
2524 struct elf_sh64_link_hash_entry *hsh;
2525
2526 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2527 hsh = (struct elf_sh64_link_hash_entry *)h;
2528 if (hsh->datalabel_got_offset != (bfd_vma) -1)
2529 break;
2530
2531 hsh->datalabel_got_offset = sgot->size;
2532 }
2533 else
2534 {
2535 if (h->got.offset != (bfd_vma) -1)
2536 {
2537 /* We have already allocated space in the .got. */
2538 break;
2539 }
2540 h->got.offset = sgot->size;
2541 }
2542
2543 /* Make sure this symbol is output as a dynamic symbol. */
2544 if (h->dynindx == -1)
2545 {
2546 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2547 return FALSE;
2548 }
2549
2550 srelgot->size += sizeof (Elf64_External_Rela);
2551 }
2552 else
2553 {
2554 /* This is a global offset table entry for a local
2555 symbol. */
2556 if (local_got_offsets == NULL)
2557 {
2558 size_t size;
2559 register unsigned int i;
2560
2561 size = symtab_hdr->sh_info * sizeof (bfd_vma);
2562 /* Reserve space for both the datalabel and
2563 codelabel local GOT offsets. */
2564 size *= 2;
2565 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
2566 if (local_got_offsets == NULL)
2567 return FALSE;
2568 elf_local_got_offsets (abfd) = local_got_offsets;
2569 for (i = 0; i < symtab_hdr->sh_info; i++)
2570 local_got_offsets[i] = (bfd_vma) -1;
2571 for (; i < 2 * symtab_hdr->sh_info; i++)
2572 local_got_offsets[i] = (bfd_vma) -1;
2573 }
2574 if ((rel->r_addend & 1) != 0)
2575 {
2576 if (local_got_offsets[symtab_hdr->sh_info
2577 + r_symndx] != (bfd_vma) -1)
2578 {
2579 /* We have already allocated space in the .got. */
2580 break;
2581 }
2582 local_got_offsets[symtab_hdr->sh_info
2583 + r_symndx] = sgot->size;
2584 }
2585 else
2586 {
2587 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
2588 {
2589 /* We have already allocated space in the .got. */
2590 break;
2591 }
2592 local_got_offsets[r_symndx] = sgot->size;
2593 }
2594
2595 if (info->shared)
2596 {
2597 /* If we are generating a shared object, we need to
2598 output a R_SH_RELATIVE reloc so that the dynamic
2599 linker can adjust this GOT entry. */
2600 srelgot->size += sizeof (Elf64_External_Rela);
2601 }
2602 }
2603
2604 sgot->size += 8;
2605
2606 break;
2607
2608 case R_SH_GOTPLT_LOW16:
2609 case R_SH_GOTPLT_MEDLOW16:
2610 case R_SH_GOTPLT_MEDHI16:
2611 case R_SH_GOTPLT_HI16:
2612 case R_SH_GOTPLT10BY4:
2613 case R_SH_GOTPLT10BY8:
2614 /* If this is a local symbol, we resolve it directly without
2615 creating a procedure linkage table entry. */
2616
2617 if (h == NULL
2618 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
2619 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
2620 || ! info->shared
2621 || info->symbolic
2622 || h->dynindx == -1
2623 || h->got.offset != (bfd_vma) -1)
2624 goto force_got;
2625
2626 /* Make sure this symbol is output as a dynamic symbol. */
2627 if (h->dynindx == -1)
2628 {
2629 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2630 return FALSE;
2631 }
2632
2633 h->needs_plt = 1;
2634
2635 break;
2636
2637 case R_SH_PLT_LOW16:
2638 case R_SH_PLT_MEDLOW16:
2639 case R_SH_PLT_MEDHI16:
2640 case R_SH_PLT_HI16:
2641 /* This symbol requires a procedure linkage table entry. We
2642 actually build the entry in adjust_dynamic_symbol,
2643 because this might be a case of linking PIC code which is
2644 never referenced by a dynamic object, in which case we
2645 don't need to generate a procedure linkage table entry
2646 after all. */
2647
2648 /* If this is a local symbol, we resolve it directly without
2649 creating a procedure linkage table entry. */
2650 if (h == NULL)
2651 continue;
2652
2653 if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
2654 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
2655 break;
2656
2657 h->needs_plt = 1;
2658
2659 break;
2660
2661 case R_SH_64:
2662 case R_SH_64_PCREL:
2663 if (h != NULL)
2664 h->non_got_ref = 1;
2665
2666 /* If we are creating a shared library, and this is a reloc
2667 against a global symbol, or a non PC relative reloc
2668 against a local symbol, then we need to copy the reloc
2669 into the shared library. However, if we are linking with
2670 -Bsymbolic, we do not need to copy a reloc against a
2671 global symbol which is defined in an object we are
2672 including in the link (i.e., DEF_REGULAR is set). At
2673 this point we have not seen all the input files, so it is
2674 possible that DEF_REGULAR is not set now but will be set
2675 later (it is never cleared). We account for that
2676 possibility below by storing information in the
2677 pcrel_relocs_copied field of the hash table entry. */
2678 if (info->shared
2679 && (sec->flags & SEC_ALLOC) != 0
2680 && (ELF32_R_TYPE (rel->r_info) != R_SH_64_PCREL
2681 || (h != NULL
2682 && (! info->symbolic
2683 || !h->def_regular))))
2684 {
2685 /* When creating a shared object, we must copy these
2686 reloc types into the output file. We create a reloc
2687 section in dynobj and make room for this reloc. */
2688 if (sreloc == NULL)
2689 {
2690 sreloc = _bfd_elf_make_dynamic_reloc_section
2691 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
2692
2693 if (sreloc == NULL)
2694 return FALSE;
2695 }
2696
2697 sreloc->size += sizeof (Elf64_External_Rela);
2698
2699 /* If we are linking with -Bsymbolic, and this is a
2700 global symbol, we count the number of PC relative
2701 relocations we have entered for this symbol, so that
2702 we can discard them again if the symbol is later
2703 defined by a regular object. Note that this function
2704 is only called if we are using an elf_sh linker
2705 hash table, which means that h is really a pointer to
2706 an elf_sh_link_hash_entry. */
2707 if (h != NULL && info->symbolic
2708 && ELF64_R_TYPE (rel->r_info) == R_SH_64_PCREL)
2709 {
2710 struct elf_sh64_link_hash_entry *eh;
2711 struct elf_sh64_pcrel_relocs_copied *p;
2712
2713 eh = (struct elf_sh64_link_hash_entry *) h;
2714
2715 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
2716 if (p->section == sreloc)
2717 break;
2718
2719 if (p == NULL)
2720 {
2721 p = ((struct elf_sh64_pcrel_relocs_copied *)
2722 bfd_alloc (dynobj, sizeof *p));
2723 if (p == NULL)
2724 return FALSE;
2725 p->next = eh->pcrel_relocs_copied;
2726 eh->pcrel_relocs_copied = p;
2727 p->section = sreloc;
2728 p->count = 0;
2729 }
2730
2731 ++p->count;
2732 }
2733 }
2734
2735 break;
2736 }
2737 }
2738
2739 return TRUE;
2740 }
2741
2742 static int
2743 sh64_elf64_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
2744 {
2745 if (ELF_ST_TYPE (elf_sym->st_info) == STT_DATALABEL)
2746 return STT_DATALABEL;
2747
2748 return type;
2749 }
2750
2751 /* FIXME: This is a copy of sh64_elf_add_symbol_hook in elf32-sh64.c.
2752 Either file can presumably exist without the other, but do not differ
2753 in elf-size-ness. How to share?
2754
2755 Hook called by the linker routine which adds symbols from an object
2756 file. We must make indirect symbols for undefined symbols marked with
2757 STT_DATALABEL, so relocations passing them will pick up that attribute
2758 and neutralize STO_SH5_ISA32 found on the symbol definition.
2759
2760 There is a problem, though: We want to fill in the hash-table entry for
2761 this symbol and signal to the caller that no further processing is
2762 needed. But we don't have the index for this hash-table entry. We
2763 rely here on that the current entry is the first hash-entry with NULL,
2764 which seems brittle. Also, iterating over the hash-table to find that
2765 entry is a linear operation on the number of symbols in this input
2766 file, and this function should take constant time, so that's not good
2767 too. Only comfort is that DataLabel references should only be found in
2768 hand-written assembly code and thus be rare. FIXME: Talk maintainers
2769 into adding an option to elf_add_symbol_hook (preferably) for the index
2770 or the hash entry, alternatively adding the index to Elf_Internal_Sym
2771 (not so good). */
2772
2773 static bfd_boolean
2774 sh64_elf64_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
2775 Elf_Internal_Sym *sym, const char **namep,
2776 flagword *flagsp ATTRIBUTE_UNUSED,
2777 asection **secp, bfd_vma *valp)
2778 {
2779 /* We want to do this for relocatable as well as final linking. */
2780 if (ELF_ST_TYPE (sym->st_info) == STT_DATALABEL
2781 && is_elf_hash_table (info->hash))
2782 {
2783 struct elf_link_hash_entry *h;
2784
2785 /* For relocatable links, we register the DataLabel sym in its own
2786 right, and tweak the name when it's output. Otherwise, we make
2787 an indirect symbol of it. */
2788 flagword flags
2789 = info->relocatable || info->emitrelocations
2790 ? BSF_GLOBAL : BSF_GLOBAL | BSF_INDIRECT;
2791
2792 char *dl_name
2793 = bfd_malloc (strlen (*namep) + sizeof (DATALABEL_SUFFIX));
2794 struct elf_link_hash_entry ** sym_hash = elf_sym_hashes (abfd);
2795
2796 BFD_ASSERT (sym_hash != NULL);
2797
2798 /* Allocation may fail. */
2799 if (dl_name == NULL)
2800 return FALSE;
2801
2802 strcpy (dl_name, *namep);
2803 strcat (dl_name, DATALABEL_SUFFIX);
2804
2805 h = (struct elf_link_hash_entry *)
2806 bfd_link_hash_lookup (info->hash, dl_name, FALSE, FALSE, FALSE);
2807
2808 if (h == NULL)
2809 {
2810 /* No previous datalabel symbol. Make one. */
2811 struct bfd_link_hash_entry *bh = NULL;
2812 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2813
2814 if (! _bfd_generic_link_add_one_symbol (info, abfd, dl_name,
2815 flags, *secp, *valp,
2816 *namep, FALSE,
2817 bed->collect, &bh))
2818 {
2819 free (dl_name);
2820 return FALSE;
2821 }
2822
2823 h = (struct elf_link_hash_entry *) bh;
2824 h->non_elf = 0;
2825 h->type = STT_DATALABEL;
2826 }
2827 else
2828 /* If a new symbol was created, it holds the allocated name.
2829 Otherwise, we don't need it anymore and should deallocate it. */
2830 free (dl_name);
2831
2832 if (h->type != STT_DATALABEL
2833 || ((info->relocatable || info->emitrelocations)
2834 && h->root.type != bfd_link_hash_undefined)
2835 || (! info->relocatable && !info->emitrelocations
2836 && h->root.type != bfd_link_hash_indirect))
2837 {
2838 /* Make sure we don't get confused on invalid input. */
2839 (*_bfd_error_handler)
2840 (_("%s: encountered datalabel symbol in input"),
2841 bfd_get_filename (abfd));
2842 bfd_set_error (bfd_error_bad_value);
2843 return FALSE;
2844 }
2845
2846 /* Now find the hash-table slot for this entry and fill it in. */
2847 while (*sym_hash != NULL)
2848 sym_hash++;
2849 *sym_hash = h;
2850
2851 /* Signal to caller to skip this symbol - we've handled it. */
2852 *namep = NULL;
2853 }
2854
2855 return TRUE;
2856 }
2857
2858 /* This hook function is called before the linker writes out a global
2859 symbol. For relocatable links, DataLabel symbols will be present in
2860 linker output. We cut off the special suffix on those symbols, so the
2861 right name appears in the output.
2862
2863 When linking and emitting relocations, there can appear global symbols
2864 that are not referenced by relocs, but rather only implicitly through
2865 DataLabel references, a relation that is not visible to the linker.
2866 Since no stripping of global symbols in done when doing such linking,
2867 we don't need to look up and make sure to emit the main symbol for each
2868 DataLabel symbol. */
2869
2870 static int
2871 sh64_elf64_link_output_symbol_hook (struct bfd_link_info *info,
2872 const char *cname,
2873 Elf_Internal_Sym *sym,
2874 asection *input_sec ATTRIBUTE_UNUSED,
2875 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
2876 {
2877 char *name = (char *) cname;
2878
2879 if (info->relocatable || info->emitrelocations)
2880 {
2881 if (ELF_ST_TYPE (sym->st_info) == STT_DATALABEL)
2882 name[strlen (name) - strlen (DATALABEL_SUFFIX)] = 0;
2883 }
2884
2885 return 1;
2886 }
2887
2888 /* Set bit 0 on the entry address; it always points to SHmedia code. This
2889 is mostly for symmetry with the 32-bit format, where code can be
2890 SHcompact and we need to make a distinction to make sure execution
2891 starts in the right ISA mode. It is also convenient for a loader,
2892 which would otherwise have to set this bit when loading a TR register
2893 before jumping to the program entry. */
2894
2895 static void
2896 sh64_elf64_final_write_processing (bfd *abfd,
2897 bfd_boolean linker ATTRIBUTE_UNUSED)
2898 {
2899 /* FIXME: Perhaps we shouldn't do this if the entry address was supplied
2900 numerically, but we currently lack the infrastructure to recognize
2901 that: The entry symbol, and info whether it is numeric or a symbol
2902 name is kept private in the linker. */
2903 if (elf_elfheader (abfd)->e_type == ET_EXEC)
2904 elf_elfheader (abfd)->e_entry |= 1;
2905 }
2906
2907 /* First entry in an absolute procedure linkage table look like this. */
2908
2909 static const bfd_byte elf_sh64_plt0_entry_be[PLT_ENTRY_SIZE] =
2910 {
2911 0xcc, 0x00, 0x01, 0x10, /* movi .got.plt >> 48, r17 */
2912 0xc8, 0x00, 0x01, 0x10, /* shori (.got.plt >> 32) & 65535, r17 */
2913 0xc8, 0x00, 0x01, 0x10, /* shori (.got.plt >> 16) & 65535, r17 */
2914 0xc8, 0x00, 0x01, 0x10, /* shori .got.plt & 65535, r17 */
2915 0x8d, 0x10, 0x09, 0x90, /* ld.q r17, 16, r25 */
2916 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
2917 0x8d, 0x10, 0x05, 0x10, /* ld.q r17, 8, r17 */
2918 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
2919 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2920 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2921 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2922 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2923 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2924 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2925 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2926 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2927 };
2928
2929 static const bfd_byte elf_sh64_plt0_entry_le[PLT_ENTRY_SIZE] =
2930 {
2931 0x10, 0x01, 0x00, 0xcc, /* movi .got.plt >> 16, r17 */
2932 0x10, 0x01, 0x00, 0xc8, /* shori (.got.plt >> 32) & 65535, r17 */
2933 0x10, 0x01, 0x00, 0xc8, /* shori (.got.plt >> 16) & 65535, r17 */
2934 0x10, 0x01, 0x00, 0xc8, /* shori .got.plt & 65535, r17 */
2935 0x90, 0x09, 0x10, 0x8d, /* ld.q r17, 16, r25 */
2936 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
2937 0x10, 0x05, 0x10, 0x8d, /* ld.q r17, 8, r17 */
2938 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
2939 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2940 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2941 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2942 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2943 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2944 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2945 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2946 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2947 };
2948
2949 /* Sebsequent entries in an absolute procedure linkage table look like
2950 this. */
2951
2952 static const bfd_byte elf_sh64_plt_entry_be[PLT_ENTRY_SIZE] =
2953 {
2954 0xcc, 0x00, 0x01, 0x90, /* movi nameN-in-GOT >> 48, r25 */
2955 0xc8, 0x00, 0x01, 0x90, /* shori (nameN-in-GOT >> 32) & 65535, r25 */
2956 0xc8, 0x00, 0x01, 0x90, /* shori (nameN-in-GOT >> 16) & 65535, r25 */
2957 0xc8, 0x00, 0x01, 0x90, /* shori nameN-in-GOT & 65535, r25 */
2958 0x8d, 0x90, 0x01, 0x90, /* ld.q r25, 0, r25 */
2959 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
2960 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
2961 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2962 0xcc, 0x00, 0x01, 0x90, /* movi (.+8-.PLT0) >> 16, r25 */
2963 0xc8, 0x00, 0x01, 0x90, /* shori (.+4-.PLT0) & 65535, r25 */
2964 0x6b, 0xf5, 0x66, 0x00, /* ptrel r25, tr0 */
2965 0xcc, 0x00, 0x01, 0x50, /* movi reloc-offset >> 16, r21 */
2966 0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */
2967 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
2968 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2969 0x6f, 0xf0, 0xff, 0xf0, /* nop */
2970 };
2971
2972 static const bfd_byte elf_sh64_plt_entry_le[PLT_ENTRY_SIZE] =
2973 {
2974 0x90, 0x01, 0x00, 0xcc, /* movi nameN-in-GOT >> 16, r25 */
2975 0x90, 0x01, 0x00, 0xc8, /* shori nameN-in-GOT & 65535, r25 */
2976 0x90, 0x01, 0x00, 0xc8, /* shori nameN-in-GOT & 65535, r25 */
2977 0x90, 0x01, 0x00, 0xc8, /* shori nameN-in-GOT & 65535, r25 */
2978 0x90, 0x01, 0x90, 0x8d, /* ld.q r25, 0, r25 */
2979 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
2980 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
2981 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2982 0x90, 0x01, 0x00, 0xcc, /* movi (.+8-.PLT0) >> 16, r25 */
2983 0x90, 0x01, 0x00, 0xc8, /* shori (.+4-.PLT0) & 65535, r25 */
2984 0x00, 0x66, 0xf5, 0x6b, /* ptrel r25, tr0 */
2985 0x50, 0x01, 0x00, 0xcc, /* movi reloc-offset >> 16, r21 */
2986 0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */
2987 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
2988 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2989 0xf0, 0xff, 0xf0, 0x6f, /* nop */
2990 };
2991
2992 /* Entries in a PIC procedure linkage table look like this. */
2993
2994 static const bfd_byte elf_sh64_pic_plt_entry_be[PLT_ENTRY_SIZE] =
2995 {
2996 0xcc, 0x00, 0x01, 0x90, /* movi nameN@GOT >> 16, r25 */
2997 0xc8, 0x00, 0x01, 0x90, /* shori nameN@GOT & 65535, r25 */
2998 0x40, 0xc3, 0x65, 0x90, /* ldx.q r12, r25, r25 */
2999 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
3000 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
3001 0x6f, 0xf0, 0xff, 0xf0, /* nop */
3002 0x6f, 0xf0, 0xff, 0xf0, /* nop */
3003 0x6f, 0xf0, 0xff, 0xf0, /* nop */
3004 0xce, 0x00, 0x01, 0x10, /* movi -GOT_BIAS, r17 */
3005 0x00, 0xc9, 0x45, 0x10, /* add r12, r17, r17 */
3006 0x8d, 0x10, 0x09, 0x90, /* ld.q r17, 16, r25 */
3007 0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
3008 0x8d, 0x10, 0x05, 0x10, /* ld.q r17, 8, r17 */
3009 0xcc, 0x00, 0x01, 0x50, /* movi reloc-offset >> 16, r21 */
3010 0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */
3011 0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
3012 };
3013
3014 static const bfd_byte elf_sh64_pic_plt_entry_le[PLT_ENTRY_SIZE] =
3015 {
3016 0x90, 0x01, 0x00, 0xcc, /* movi nameN@GOT >> 16, r25 */
3017 0x90, 0x01, 0x00, 0xc8, /* shori nameN@GOT & 65535, r25 */
3018 0x90, 0x65, 0xc3, 0x40, /* ldx.q r12, r25, r25 */
3019 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
3020 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
3021 0xf0, 0xff, 0xf0, 0x6f, /* nop */
3022 0xf0, 0xff, 0xf0, 0x6f, /* nop */
3023 0xf0, 0xff, 0xf0, 0x6f, /* nop */
3024 0x10, 0x01, 0x00, 0xce, /* movi -GOT_BIAS, r17 */
3025 0x10, 0x45, 0xc9, 0x00, /* add r12, r17, r17 */
3026 0x90, 0x09, 0x10, 0x8d, /* ld.q r17, 16, r25 */
3027 0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
3028 0x10, 0x05, 0x10, 0x8d, /* ld.q r17, 8, r17 */
3029 0x50, 0x01, 0x00, 0xcc, /* movi reloc-offset >> 16, r21 */
3030 0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */
3031 0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
3032 };
3033
3034 static const bfd_byte *elf_sh64_plt0_entry;
3035 static const bfd_byte *elf_sh64_plt_entry;
3036 static const bfd_byte *elf_sh64_pic_plt_entry;
3037
3038 /* Create an entry in an sh ELF linker hash table. */
3039
3040 static struct bfd_hash_entry *
3041 sh64_elf64_link_hash_newfunc (struct bfd_hash_entry *entry,
3042 struct bfd_hash_table *table,
3043 const char *string)
3044 {
3045 struct elf_sh64_link_hash_entry *ret =
3046 (struct elf_sh64_link_hash_entry *) entry;
3047
3048 /* Allocate the structure if it has not already been allocated by a
3049 subclass. */
3050 if (ret == (struct elf_sh64_link_hash_entry *) NULL)
3051 ret = ((struct elf_sh64_link_hash_entry *)
3052 bfd_hash_allocate (table,
3053 sizeof (struct elf_sh64_link_hash_entry)));
3054 if (ret == (struct elf_sh64_link_hash_entry *) NULL)
3055 return (struct bfd_hash_entry *) ret;
3056
3057 /* Call the allocation method of the superclass. */
3058 ret = ((struct elf_sh64_link_hash_entry *)
3059 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3060 table, string));
3061 if (ret != (struct elf_sh64_link_hash_entry *) NULL)
3062 {
3063 ret->pcrel_relocs_copied = NULL;
3064 ret->datalabel_got_offset = (bfd_vma) -1;
3065 }
3066
3067 return (struct bfd_hash_entry *) ret;
3068 }
3069
3070 /* Create an sh64 ELF linker hash table. */
3071
3072 static struct bfd_link_hash_table *
3073 sh64_elf64_link_hash_table_create (bfd *abfd)
3074 {
3075 struct elf_link_hash_table *ret;
3076
3077 ret = (struct elf_link_hash_table *) bfd_malloc (sizeof (* ret));
3078 if (ret == (struct elf_link_hash_table *) NULL)
3079 return NULL;
3080
3081 if (!_bfd_elf_link_hash_table_init (ret, abfd,
3082 sh64_elf64_link_hash_newfunc,
3083 sizeof (struct elf_sh64_link_hash_entry),
3084 GENERIC_ELF_DATA))
3085 {
3086 free (ret);
3087 return NULL;
3088 }
3089
3090 return &ret->root;
3091 }
3092
3093 inline static void
3094 movi_shori_putval (bfd *output_bfd, unsigned long value, bfd_byte *addr)
3095 {
3096 bfd_put_32 (output_bfd,
3097 bfd_get_32 (output_bfd, addr)
3098 | ((value >> 6) & 0x3fffc00),
3099 addr);
3100 bfd_put_32 (output_bfd,
3101 bfd_get_32 (output_bfd, addr + 4)
3102 | ((value << 10) & 0x3fffc00),
3103 addr + 4);
3104 }
3105
3106 inline static void
3107 movi_3shori_putval (bfd *output_bfd, bfd_vma value, bfd_byte *addr)
3108 {
3109 bfd_put_32 (output_bfd,
3110 bfd_get_32 (output_bfd, addr)
3111 | ((value >> 38) & 0x3fffc00),
3112 addr);
3113 bfd_put_32 (output_bfd,
3114 bfd_get_32 (output_bfd, addr + 4)
3115 | ((value >> 22) & 0x3fffc00),
3116 addr + 4);
3117 bfd_put_32 (output_bfd,
3118 bfd_get_32 (output_bfd, addr + 8)
3119 | ((value >> 6) & 0x3fffc00),
3120 addr + 8);
3121 bfd_put_32 (output_bfd,
3122 bfd_get_32 (output_bfd, addr + 12)
3123 | ((value << 10) & 0x3fffc00),
3124 addr + 12);
3125 }
3126
3127 /* Create dynamic sections when linking against a dynamic object. */
3128
3129 static bfd_boolean
3130 sh64_elf64_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3131 {
3132 flagword flags, pltflags;
3133 register asection *s;
3134 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3135 int ptralign = 0;
3136
3137 switch (bed->s->arch_size)
3138 {
3139 case 32:
3140 ptralign = 2;
3141 break;
3142
3143 case 64:
3144 ptralign = 3;
3145 break;
3146
3147 default:
3148 bfd_set_error (bfd_error_bad_value);
3149 return FALSE;
3150 }
3151
3152 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3153 .rel[a].bss sections. */
3154
3155 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3156 | SEC_LINKER_CREATED);
3157
3158 pltflags = flags;
3159 pltflags |= SEC_CODE;
3160 if (bed->plt_not_loaded)
3161 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
3162 if (bed->plt_readonly)
3163 pltflags |= SEC_READONLY;
3164
3165 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
3166 if (s == NULL
3167 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
3168 return FALSE;
3169
3170 if (bed->want_plt_sym)
3171 {
3172 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3173 .plt section. */
3174 struct elf_link_hash_entry *h;
3175 struct bfd_link_hash_entry *bh = NULL;
3176
3177 if (! (_bfd_generic_link_add_one_symbol
3178 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
3179 (bfd_vma) 0, (const char *) NULL, FALSE, bed->collect, &bh)))
3180 return FALSE;
3181
3182 h = (struct elf_link_hash_entry *) bh;
3183 h->def_regular = 1;
3184 h->type = STT_OBJECT;
3185 elf_hash_table (info)->hplt = h;
3186
3187 if (info->shared
3188 && ! bfd_elf_link_record_dynamic_symbol (info, h))
3189 return FALSE;
3190 }
3191
3192 s = bfd_make_section_with_flags (abfd,
3193 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
3194 flags | SEC_READONLY);
3195 if (s == NULL
3196 || ! bfd_set_section_alignment (abfd, s, ptralign))
3197 return FALSE;
3198
3199 if (! _bfd_elf_create_got_section (abfd, info))
3200 return FALSE;
3201
3202 {
3203 const char *secname;
3204 char *relname;
3205 flagword secflags;
3206 asection *sec;
3207
3208 for (sec = abfd->sections; sec; sec = sec->next)
3209 {
3210 secflags = bfd_get_section_flags (abfd, sec);
3211 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
3212 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
3213 continue;
3214 secname = bfd_get_section_name (abfd, sec);
3215 relname = (char *) bfd_malloc (strlen (secname) + 6);
3216 strcpy (relname, ".rela");
3217 strcat (relname, secname);
3218 s = bfd_make_section_with_flags (abfd, relname,
3219 flags | SEC_READONLY);
3220 if (s == NULL
3221 || ! bfd_set_section_alignment (abfd, s, ptralign))
3222 return FALSE;
3223 }
3224 }
3225
3226 if (bed->want_dynbss)
3227 {
3228 /* The .dynbss section is a place to put symbols which are defined
3229 by dynamic objects, are referenced by regular objects, and are
3230 not functions. We must allocate space for them in the process
3231 image and use a R_*_COPY reloc to tell the dynamic linker to
3232 initialize them at run time. The linker script puts the .dynbss
3233 section into the .bss section of the final image. */
3234 s = bfd_make_section_with_flags (abfd, ".dynbss",
3235 SEC_ALLOC | SEC_LINKER_CREATED);
3236 if (s == NULL)
3237 return FALSE;
3238
3239 /* The .rel[a].bss section holds copy relocs. This section is not
3240 normally needed. We need to create it here, though, so that the
3241 linker will map it to an output section. We can't just create it
3242 only if we need it, because we will not know whether we need it
3243 until we have seen all the input files, and the first time the
3244 main linker code calls BFD after examining all the input files
3245 (size_dynamic_sections) the input sections have already been
3246 mapped to the output sections. If the section turns out not to
3247 be needed, we can discard it later. We will never need this
3248 section when generating a shared object, since they do not use
3249 copy relocs. */
3250 if (! info->shared)
3251 {
3252 s = bfd_make_section_with_flags (abfd,
3253 (bed->default_use_rela_p
3254 ? ".rela.bss" : ".rel.bss"),
3255 flags | SEC_READONLY);
3256 if (s == NULL
3257 || ! bfd_set_section_alignment (abfd, s, ptralign))
3258 return FALSE;
3259 }
3260 }
3261
3262 return TRUE;
3263 }
3264 \f
3265 /* Adjust a symbol defined by a dynamic object and referenced by a
3266 regular object. The current definition is in some section of the
3267 dynamic object, but we're not including those sections. We have to
3268 change the definition to something the rest of the link can
3269 understand. */
3270
3271 static bfd_boolean
3272 sh64_elf64_adjust_dynamic_symbol (struct bfd_link_info *info,
3273 struct elf_link_hash_entry *h)
3274 {
3275 bfd *dynobj;
3276 asection *s;
3277
3278 dynobj = elf_hash_table (info)->dynobj;
3279
3280 /* Make sure we know what is going on here. */
3281 BFD_ASSERT (dynobj != NULL
3282 && (h->needs_plt
3283 || h->u.weakdef != NULL
3284 || (h->def_dynamic
3285 && h->ref_regular
3286 && !h->def_regular)));
3287
3288 /* If this is a function, put it in the procedure linkage table. We
3289 will fill in the contents of the procedure linkage table later,
3290 when we know the address of the .got section. */
3291 if (h->type == STT_FUNC
3292 || h->needs_plt)
3293 {
3294 if (! info->shared
3295 && !h->def_dynamic
3296 && !h->ref_dynamic)
3297 {
3298 /* This case can occur if we saw a PLT reloc in an input
3299 file, but the symbol was never referred to by a dynamic
3300 object. In such a case, we don't actually need to build
3301 a procedure linkage table, and we can just do a REL64
3302 reloc instead. */
3303 BFD_ASSERT (h->needs_plt);
3304 return TRUE;
3305 }
3306
3307 /* Make sure this symbol is output as a dynamic symbol. */
3308 if (h->dynindx == -1)
3309 {
3310 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3311 return FALSE;
3312 }
3313
3314 s = bfd_get_section_by_name (dynobj, ".plt");
3315 BFD_ASSERT (s != NULL);
3316
3317 /* If this is the first .plt entry, make room for the special
3318 first entry. */
3319 if (s->size == 0)
3320 s->size += PLT_ENTRY_SIZE;
3321
3322 /* If this symbol is not defined in a regular file, and we are
3323 not generating a shared library, then set the symbol to this
3324 location in the .plt. This is required to make function
3325 pointers compare as equal between the normal executable and
3326 the shared library. */
3327 if (! info->shared
3328 && !h->def_regular)
3329 {
3330 h->root.u.def.section = s;
3331 h->root.u.def.value = s->size;
3332 }
3333
3334 h->plt.offset = s->size;
3335
3336 /* Make room for this entry. */
3337 s->size += elf_sh64_sizeof_plt (info);
3338
3339 /* We also need to make an entry in the .got.plt section, which
3340 will be placed in the .got section by the linker script. */
3341
3342 s = bfd_get_section_by_name (dynobj, ".got.plt");
3343 BFD_ASSERT (s != NULL);
3344 s->size += 8;
3345
3346 /* We also need to make an entry in the .rela.plt section. */
3347
3348 s = bfd_get_section_by_name (dynobj, ".rela.plt");
3349 BFD_ASSERT (s != NULL);
3350 s->size += sizeof (Elf64_External_Rela);
3351
3352 return TRUE;
3353 }
3354
3355 /* If this is a weak symbol, and there is a real definition, the
3356 processor independent code will have arranged for us to see the
3357 real definition first, and we can just use the same value. */
3358 if (h->u.weakdef != NULL)
3359 {
3360 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3361 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3362 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3363 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3364 return TRUE;
3365 }
3366
3367 /* This is a reference to a symbol defined by a dynamic object which
3368 is not a function. */
3369
3370 /* If we are creating a shared library, we must presume that the
3371 only references to the symbol are via the global offset table.
3372 For such cases we need not do anything here; the relocations will
3373 be handled correctly by relocate_section. */
3374 if (info->shared)
3375 return TRUE;
3376
3377 /* If there are no references to this symbol that do not use the
3378 GOT, we don't need to generate a copy reloc. */
3379 if (!h->non_got_ref)
3380 return TRUE;
3381
3382 if (h->size == 0)
3383 {
3384 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3385 h->root.root.string);
3386 return TRUE;
3387 }
3388
3389 /* We must allocate the symbol in our .dynbss section, which will
3390 become part of the .bss section of the executable. There will be
3391 an entry for this symbol in the .dynsym section. The dynamic
3392 object will contain position independent code, so all references
3393 from the dynamic object to this symbol will go through the global
3394 offset table. The dynamic linker will use the .dynsym entry to
3395 determine the address it must put in the global offset table, so
3396 both the dynamic object and the regular object will refer to the
3397 same memory location for the variable. */
3398
3399 s = bfd_get_section_by_name (dynobj, ".dynbss");
3400 BFD_ASSERT (s != NULL);
3401
3402 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
3403 copy the initial value out of the dynamic object and into the
3404 runtime process image. We need to remember the offset into the
3405 .rela.bss section we are going to use. */
3406 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3407 {
3408 asection *srel;
3409
3410 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3411 BFD_ASSERT (srel != NULL);
3412 srel->size += sizeof (Elf64_External_Rela);
3413 h->needs_copy = 1;
3414 }
3415
3416 return _bfd_elf_adjust_dynamic_copy (h, s);
3417 }
3418
3419 /* This function is called via sh_elf_link_hash_traverse if we are
3420 creating a shared object with -Bsymbolic. It discards the space
3421 allocated to copy PC relative relocs against symbols which are
3422 defined in regular objects. We allocated space for them in the
3423 check_relocs routine, but we won't fill them in in the
3424 relocate_section routine. */
3425
3426 static bfd_boolean
3427 sh64_elf64_discard_copies (struct elf_sh64_link_hash_entry *h,
3428 void *ignore ATTRIBUTE_UNUSED)
3429 {
3430 struct elf_sh64_pcrel_relocs_copied *s;
3431
3432 if (h->root.root.type == bfd_link_hash_warning)
3433 h = (struct elf_sh64_link_hash_entry *) h->root.root.u.i.link;
3434
3435 /* We only discard relocs for symbols defined in a regular object. */
3436 if (!h->root.def_regular)
3437 return TRUE;
3438
3439 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3440 s->section->size -= s->count * sizeof (Elf64_External_Rela);
3441
3442 return TRUE;
3443 }
3444
3445 /* Set the sizes of the dynamic sections. */
3446
3447 static bfd_boolean
3448 sh64_elf64_size_dynamic_sections (bfd *output_bfd,
3449 struct bfd_link_info *info)
3450 {
3451 bfd *dynobj;
3452 asection *s;
3453 bfd_boolean plt;
3454 bfd_boolean relocs;
3455 bfd_boolean reltext;
3456
3457 dynobj = elf_hash_table (info)->dynobj;
3458 BFD_ASSERT (dynobj != NULL);
3459
3460 if (elf_hash_table (info)->dynamic_sections_created)
3461 {
3462 /* Set the contents of the .interp section to the interpreter. */
3463 if (info->executable)
3464 {
3465 s = bfd_get_section_by_name (dynobj, ".interp");
3466 BFD_ASSERT (s != NULL);
3467 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3468 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3469 }
3470 }
3471 else
3472 {
3473 /* We may have created entries in the .rela.got section.
3474 However, if we are not creating the dynamic sections, we will
3475 not actually use these entries. Reset the size of .rela.got,
3476 which will cause it to get stripped from the output file
3477 below. */
3478 s = bfd_get_section_by_name (dynobj, ".rela.got");
3479 if (s != NULL)
3480 s->size = 0;
3481 }
3482
3483 /* If this is a -Bsymbolic shared link, then we need to discard all
3484 PC relative relocs against symbols defined in a regular object.
3485 We allocated space for them in the check_relocs routine, but we
3486 will not fill them in in the relocate_section routine. */
3487 if (info->shared && info->symbolic)
3488 sh64_elf64_link_hash_traverse (elf_hash_table (info),
3489 sh64_elf64_discard_copies, NULL);
3490
3491 /* The check_relocs and adjust_dynamic_symbol entry points have
3492 determined the sizes of the various dynamic sections. Allocate
3493 memory for them. */
3494 plt = FALSE;
3495 relocs = FALSE;
3496 reltext = FALSE;
3497 for (s = dynobj->sections; s != NULL; s = s->next)
3498 {
3499 const char *name;
3500
3501 if ((s->flags & SEC_LINKER_CREATED) == 0)
3502 continue;
3503
3504 /* It's OK to base decisions on the section name, because none
3505 of the dynobj section names depend upon the input files. */
3506 name = bfd_get_section_name (dynobj, s);
3507
3508 if (strcmp (name, ".plt") == 0)
3509 {
3510 /* Remember whether there is a PLT. */
3511 plt = s->size != 0;
3512 }
3513 else if (CONST_STRNEQ (name, ".rela"))
3514 {
3515 if (s->size != 0)
3516 {
3517 asection *target;
3518
3519 /* Remember whether there are any reloc sections other
3520 than .rela.plt. */
3521 if (strcmp (name, ".rela.plt") != 0)
3522 {
3523 const char *outname;
3524
3525 relocs = TRUE;
3526
3527 /* If this relocation section applies to a read only
3528 section, then we probably need a DT_TEXTREL
3529 entry. The entries in the .rela.plt section
3530 really apply to the .got section, which we
3531 created ourselves and so know is not readonly. */
3532 outname = bfd_get_section_name (output_bfd,
3533 s->output_section);
3534 target = bfd_get_section_by_name (output_bfd, outname + 5);
3535 if (target != NULL
3536 && (target->flags & SEC_READONLY) != 0
3537 && (target->flags & SEC_ALLOC) != 0)
3538 reltext = TRUE;
3539 }
3540
3541 /* We use the reloc_count field as a counter if we need
3542 to copy relocs into the output file. */
3543 s->reloc_count = 0;
3544 }
3545 }
3546 else if (! CONST_STRNEQ (name, ".got")
3547 && strcmp (name, ".dynbss") != 0)
3548 {
3549 /* It's not one of our sections, so don't allocate space. */
3550 continue;
3551 }
3552
3553 if (s->size == 0)
3554 {
3555 /* If we don't need this section, strip it from the
3556 output file. This is mostly to handle .rela.bss and
3557 .rela.plt. We must create both sections in
3558 create_dynamic_sections, because they must be created
3559 before the linker maps input sections to output
3560 sections. The linker does that before
3561 adjust_dynamic_symbol is called, and it is that
3562 function which decides whether anything needs to go
3563 into these sections. */
3564 s->flags |= SEC_EXCLUDE;
3565 continue;
3566 }
3567
3568 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3569 continue;
3570
3571 /* Allocate memory for the section contents. */
3572 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3573 if (s->contents == NULL)
3574 return FALSE;
3575 }
3576
3577 if (elf_hash_table (info)->dynamic_sections_created)
3578 {
3579 /* Add some entries to the .dynamic section. We fill in the
3580 values later, in sh64_elf64_finish_dynamic_sections, but we
3581 must add the entries now so that we get the correct size for
3582 the .dynamic section. The DT_DEBUG entry is filled in by the
3583 dynamic linker and used by the debugger. */
3584 if (info->executable)
3585 {
3586 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
3587 return FALSE;
3588 }
3589
3590 if (plt)
3591 {
3592 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
3593 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
3594 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
3595 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
3596 return FALSE;
3597 }
3598
3599 if (relocs)
3600 {
3601 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
3602 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
3603 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
3604 sizeof (Elf64_External_Rela)))
3605 return FALSE;
3606 }
3607
3608 if (reltext)
3609 {
3610 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
3611 return FALSE;
3612 }
3613 }
3614
3615 return TRUE;
3616 }
3617
3618 /* Finish up dynamic symbol handling. We set the contents of various
3619 dynamic sections here. */
3620
3621 static bfd_boolean
3622 sh64_elf64_finish_dynamic_symbol (bfd *output_bfd,
3623 struct bfd_link_info *info,
3624 struct elf_link_hash_entry *h,
3625 Elf_Internal_Sym *sym)
3626 {
3627 bfd *dynobj;
3628
3629 dynobj = elf_hash_table (info)->dynobj;
3630
3631 if (h->plt.offset != (bfd_vma) -1)
3632 {
3633 asection *splt;
3634 asection *sgot;
3635 asection *srel;
3636
3637 bfd_vma plt_index;
3638 bfd_vma got_offset;
3639 Elf_Internal_Rela rel;
3640 bfd_byte *loc;
3641
3642 /* This symbol has an entry in the procedure linkage table. Set
3643 it up. */
3644
3645 BFD_ASSERT (h->dynindx != -1);
3646
3647 splt = bfd_get_section_by_name (dynobj, ".plt");
3648 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
3649 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
3650 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
3651
3652 /* Get the index in the procedure linkage table which
3653 corresponds to this symbol. This is the index of this symbol
3654 in all the symbols for which we are making plt entries. The
3655 first entry in the procedure linkage table is reserved. */
3656 plt_index = h->plt.offset / elf_sh64_sizeof_plt (info) - 1;
3657
3658 /* Get the offset into the .got table of the entry that
3659 corresponds to this function. Each .got entry is 8 bytes.
3660 The first three are reserved. */
3661 got_offset = (plt_index + 3) * 8;
3662
3663 if (info->shared)
3664 got_offset -= GOT_BIAS;
3665
3666 /* Fill in the entry in the procedure linkage table. */
3667 if (! info->shared)
3668 {
3669 if (elf_sh64_plt_entry == NULL)
3670 {
3671 elf_sh64_plt_entry = (bfd_big_endian (output_bfd) ?
3672 elf_sh64_plt_entry_be : elf_sh64_plt_entry_le);
3673 }
3674 memcpy (splt->contents + h->plt.offset, elf_sh64_plt_entry,
3675 elf_sh64_sizeof_plt (info));
3676 movi_3shori_putval (output_bfd,
3677 (sgot->output_section->vma
3678 + sgot->output_offset
3679 + got_offset),
3680 (splt->contents + h->plt.offset
3681 + elf_sh64_plt_symbol_offset (info)));
3682
3683 /* Set bottom bit because its for a branch to SHmedia */
3684 movi_shori_putval (output_bfd,
3685 -(h->plt.offset
3686 + elf_sh64_plt_plt0_offset (info) + 8)
3687 | 1,
3688 (splt->contents + h->plt.offset
3689 + elf_sh64_plt_plt0_offset (info)));
3690 }
3691 else
3692 {
3693 if (elf_sh64_pic_plt_entry == NULL)
3694 {
3695 elf_sh64_pic_plt_entry = (bfd_big_endian (output_bfd) ?
3696 elf_sh64_pic_plt_entry_be :
3697 elf_sh64_pic_plt_entry_le);
3698 }
3699 memcpy (splt->contents + h->plt.offset, elf_sh64_pic_plt_entry,
3700 elf_sh64_sizeof_plt (info));
3701 movi_shori_putval (output_bfd, got_offset,
3702 (splt->contents + h->plt.offset
3703 + elf_sh64_plt_symbol_offset (info)));
3704 }
3705
3706 if (info->shared)
3707 got_offset += GOT_BIAS;
3708
3709 movi_shori_putval (output_bfd,
3710 plt_index * sizeof (Elf64_External_Rela),
3711 (splt->contents + h->plt.offset
3712 + elf_sh64_plt_reloc_offset (info)));
3713
3714 /* Fill in the entry in the global offset table. */
3715 bfd_put_64 (output_bfd,
3716 (splt->output_section->vma
3717 + splt->output_offset
3718 + h->plt.offset
3719 + elf_sh64_plt_temp_offset (info)),
3720 sgot->contents + got_offset);
3721
3722 /* Fill in the entry in the .rela.plt section. */
3723 rel.r_offset = (sgot->output_section->vma
3724 + sgot->output_offset
3725 + got_offset);
3726 rel.r_info = ELF64_R_INFO (h->dynindx, R_SH_JMP_SLOT64);
3727 rel.r_addend = 0;
3728 rel.r_addend = GOT_BIAS;
3729 loc = srel->contents + plt_index * sizeof (Elf64_External_Rela);
3730 bfd_elf64_swap_reloca_out (output_bfd, &rel, loc);
3731
3732 if (!h->def_regular)
3733 {
3734 /* Mark the symbol as undefined, rather than as defined in
3735 the .plt section. Leave the value alone. */
3736 sym->st_shndx = SHN_UNDEF;
3737 }
3738 }
3739
3740 if (h->got.offset != (bfd_vma) -1)
3741 {
3742 asection *sgot;
3743 asection *srel;
3744 Elf_Internal_Rela rel;
3745 bfd_byte *loc;
3746
3747 /* This symbol has an entry in the global offset table. Set it
3748 up. */
3749
3750 sgot = bfd_get_section_by_name (dynobj, ".got");
3751 srel = bfd_get_section_by_name (dynobj, ".rela.got");
3752 BFD_ASSERT (sgot != NULL && srel != NULL);
3753
3754 rel.r_offset = (sgot->output_section->vma
3755 + sgot->output_offset
3756 + (h->got.offset &~ 1));
3757
3758 /* If this is a -Bsymbolic link, and the symbol is defined
3759 locally, we just want to emit a RELATIVE reloc. Likewise if
3760 the symbol was forced to be local because of a version file.
3761 The entry in the global offset table will already have been
3762 initialized in the relocate_section function. */
3763 if (info->shared
3764 && (info->symbolic || h->dynindx == -1)
3765 && h->def_regular)
3766 {
3767 rel.r_info = ELF64_R_INFO (0, R_SH_RELATIVE64);
3768 rel.r_addend = (h->root.u.def.value
3769 + h->root.u.def.section->output_section->vma
3770 + h->root.u.def.section->output_offset);
3771 }
3772 else
3773 {
3774 bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3775 rel.r_info = ELF64_R_INFO (h->dynindx, R_SH_GLOB_DAT64);
3776 rel.r_addend = 0;
3777 }
3778
3779 loc = srel->contents;
3780 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
3781 bfd_elf64_swap_reloca_out (output_bfd, &rel, loc);
3782 }
3783
3784 if (h->needs_copy)
3785 {
3786 asection *s;
3787 Elf_Internal_Rela rel;
3788 bfd_byte *loc;
3789
3790 /* This symbol needs a copy reloc. Set it up. */
3791
3792 BFD_ASSERT (h->dynindx != -1
3793 && (h->root.type == bfd_link_hash_defined
3794 || h->root.type == bfd_link_hash_defweak));
3795
3796 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3797 ".rela.bss");
3798 BFD_ASSERT (s != NULL);
3799
3800 rel.r_offset = (h->root.u.def.value
3801 + h->root.u.def.section->output_section->vma
3802 + h->root.u.def.section->output_offset);
3803 rel.r_info = ELF64_R_INFO (h->dynindx, R_SH_COPY64);
3804 rel.r_addend = 0;
3805 loc = s->contents;
3806 loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
3807 bfd_elf64_swap_reloca_out (output_bfd, &rel, loc);
3808 }
3809
3810 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3811 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3812 || h == elf_hash_table (info)->hgot)
3813 sym->st_shndx = SHN_ABS;
3814
3815 return TRUE;
3816 }
3817
3818 /* Finish up the dynamic sections. */
3819
3820 static bfd_boolean
3821 sh64_elf64_finish_dynamic_sections (bfd *output_bfd,
3822 struct bfd_link_info *info)
3823 {
3824 bfd *dynobj;
3825 asection *sgot;
3826 asection *sdyn;
3827
3828 dynobj = elf_hash_table (info)->dynobj;
3829
3830 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
3831 BFD_ASSERT (sgot != NULL);
3832 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3833
3834 if (elf_hash_table (info)->dynamic_sections_created)
3835 {
3836 asection *splt;
3837 Elf64_External_Dyn *dyncon, *dynconend;
3838
3839 BFD_ASSERT (sdyn != NULL);
3840
3841 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3842 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
3843 for (; dyncon < dynconend; dyncon++)
3844 {
3845 Elf_Internal_Dyn dyn;
3846 const char *name;
3847 asection *s;
3848 struct elf_link_hash_entry *h;
3849
3850 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3851
3852 switch (dyn.d_tag)
3853 {
3854 default:
3855 break;
3856
3857 case DT_INIT:
3858 name = info->init_function;
3859 goto get_sym;
3860
3861 case DT_FINI:
3862 name = info->fini_function;
3863 get_sym:
3864 if (dyn.d_un.d_val != 0)
3865 {
3866 h = elf_link_hash_lookup (elf_hash_table (info), name,
3867 FALSE, FALSE, TRUE);
3868 if (h != NULL && (h->other & STO_SH5_ISA32))
3869 {
3870 dyn.d_un.d_val |= 1;
3871 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3872 }
3873 }
3874 break;
3875
3876 case DT_PLTGOT:
3877 name = ".got";
3878 goto get_vma;
3879
3880 case DT_JMPREL:
3881 name = ".rela.plt";
3882 get_vma:
3883 s = bfd_get_section_by_name (output_bfd, name);
3884 BFD_ASSERT (s != NULL);
3885 dyn.d_un.d_ptr = s->vma;
3886 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3887 break;
3888
3889 case DT_PLTRELSZ:
3890 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
3891 BFD_ASSERT (s != NULL);
3892 dyn.d_un.d_val = s->size;
3893 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3894 break;
3895
3896 case DT_RELASZ:
3897 /* My reading of the SVR4 ABI indicates that the
3898 procedure linkage table relocs (DT_JMPREL) should be
3899 included in the overall relocs (DT_RELA). This is
3900 what Solaris does. However, UnixWare can not handle
3901 that case. Therefore, we override the DT_RELASZ entry
3902 here to make it not include the JMPREL relocs. Since
3903 the linker script arranges for .rela.plt to follow all
3904 other relocation sections, we don't have to worry
3905 about changing the DT_RELA entry. */
3906 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
3907 if (s != NULL)
3908 dyn.d_un.d_val -= s->size;
3909 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3910 break;
3911 }
3912 }
3913
3914 /* Fill in the first entry in the procedure linkage table. */
3915 splt = bfd_get_section_by_name (dynobj, ".plt");
3916 if (splt && splt->size > 0)
3917 {
3918 if (info->shared)
3919 {
3920 if (elf_sh64_pic_plt_entry == NULL)
3921 {
3922 elf_sh64_pic_plt_entry = (bfd_big_endian (output_bfd) ?
3923 elf_sh64_pic_plt_entry_be :
3924 elf_sh64_pic_plt_entry_le);
3925 }
3926 memcpy (splt->contents, elf_sh64_pic_plt_entry,
3927 elf_sh64_sizeof_plt (info));
3928 }
3929 else
3930 {
3931 if (elf_sh64_plt0_entry == NULL)
3932 {
3933 elf_sh64_plt0_entry = (bfd_big_endian (output_bfd) ?
3934 elf_sh64_plt0_entry_be :
3935 elf_sh64_plt0_entry_le);
3936 }
3937 memcpy (splt->contents, elf_sh64_plt0_entry, PLT_ENTRY_SIZE);
3938 movi_3shori_putval (output_bfd,
3939 sgot->output_section->vma
3940 + sgot->output_offset,
3941 splt->contents
3942 + elf_sh64_plt0_gotplt_offset (info));
3943 }
3944
3945 /* UnixWare sets the entsize of .plt to 8, although that doesn't
3946 really seem like the right value. */
3947 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 8;
3948 }
3949 }
3950
3951 /* Fill in the first three entries in the global offset table. */
3952 if (sgot->size > 0)
3953 {
3954 if (sdyn == NULL)
3955 bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents);
3956 else
3957 bfd_put_64 (output_bfd,
3958 sdyn->output_section->vma + sdyn->output_offset,
3959 sgot->contents);
3960 bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3961 bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + 16);
3962 }
3963
3964 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8;
3965
3966 return TRUE;
3967 }
3968
3969 /* Merge non visibility st_other attribute when the symbol comes from
3970 a dynamic object. */
3971 static void
3972 sh64_elf64_merge_symbol_attribute (struct elf_link_hash_entry *h,
3973 const Elf_Internal_Sym *isym,
3974 bfd_boolean definition,
3975 bfd_boolean dynamic ATTRIBUTE_UNUSED)
3976 {
3977 if ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) != 0)
3978 {
3979 unsigned char other;
3980
3981 /* Take the balance of OTHER from the definition. */
3982 other = (definition ? isym->st_other : h->other);
3983 other &= ~ ELF_ST_VISIBILITY (-1);
3984 h->other = other | ELF_ST_VISIBILITY (h->other);
3985 }
3986
3987 return;
3988 }
3989
3990 static const struct bfd_elf_special_section sh64_elf64_special_sections[]=
3991 {
3992 { STRING_COMMA_LEN (".cranges"), 0, SHT_PROGBITS, 0 },
3993 { NULL, 0, 0, 0, 0 }
3994 };
3995
3996 #define TARGET_BIG_SYM bfd_elf64_sh64_vec
3997 #define TARGET_BIG_NAME "elf64-sh64"
3998 #define TARGET_LITTLE_SYM bfd_elf64_sh64l_vec
3999 #define TARGET_LITTLE_NAME "elf64-sh64l"
4000 #define ELF_ARCH bfd_arch_sh
4001 #define ELF_MACHINE_CODE EM_SH
4002 #define ELF_MAXPAGESIZE 128
4003
4004 #define elf_symbol_leading_char '_'
4005
4006 #define bfd_elf64_bfd_reloc_type_lookup sh_elf64_reloc_type_lookup
4007 #define bfd_elf64_bfd_reloc_name_lookup \
4008 sh_elf64_reloc_name_lookup
4009 #define elf_info_to_howto sh_elf64_info_to_howto
4010
4011 /* Note: there's no relaxation at present. */
4012
4013 #define elf_backend_relocate_section sh_elf64_relocate_section
4014 #define bfd_elf64_bfd_get_relocated_section_contents \
4015 sh_elf64_get_relocated_section_contents
4016 #define elf_backend_object_p sh_elf64_set_mach_from_flags
4017 #define bfd_elf64_bfd_set_private_flags \
4018 sh_elf64_set_private_flags
4019 #define bfd_elf64_bfd_copy_private_bfd_data \
4020 sh_elf64_copy_private_data
4021 #define bfd_elf64_bfd_merge_private_bfd_data \
4022 sh_elf64_merge_private_data
4023 #define elf_backend_fake_sections sh64_elf64_fake_sections
4024
4025 #define elf_backend_gc_mark_hook sh_elf64_gc_mark_hook
4026 #define elf_backend_check_relocs sh_elf64_check_relocs
4027
4028 #define elf_backend_can_gc_sections 1
4029
4030 #define elf_backend_get_symbol_type sh64_elf64_get_symbol_type
4031
4032 #define elf_backend_add_symbol_hook sh64_elf64_add_symbol_hook
4033
4034 #define elf_backend_link_output_symbol_hook \
4035 sh64_elf64_link_output_symbol_hook
4036
4037 #define elf_backend_merge_symbol_attribute \
4038 sh64_elf64_merge_symbol_attribute
4039
4040 #define elf_backend_final_write_processing \
4041 sh64_elf64_final_write_processing
4042
4043 #define elf_backend_create_dynamic_sections \
4044 sh64_elf64_create_dynamic_sections
4045 #define bfd_elf64_bfd_link_hash_table_create \
4046 sh64_elf64_link_hash_table_create
4047 #define elf_backend_adjust_dynamic_symbol \
4048 sh64_elf64_adjust_dynamic_symbol
4049 #define elf_backend_size_dynamic_sections \
4050 sh64_elf64_size_dynamic_sections
4051 #define elf_backend_omit_section_dynsym \
4052 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4053 #define elf_backend_finish_dynamic_symbol \
4054 sh64_elf64_finish_dynamic_symbol
4055 #define elf_backend_finish_dynamic_sections \
4056 sh64_elf64_finish_dynamic_sections
4057 #define elf_backend_special_sections sh64_elf64_special_sections
4058
4059 #define elf_backend_want_got_plt 1
4060 #define elf_backend_plt_readonly 1
4061 #define elf_backend_want_plt_sym 0
4062 #define elf_backend_got_header_size 24
4063
4064 #include "elf64-target.h"
4065
4066 /* NetBSD support. */
4067 #undef TARGET_BIG_SYM
4068 #define TARGET_BIG_SYM bfd_elf64_sh64nbsd_vec
4069 #undef TARGET_BIG_NAME
4070 #define TARGET_BIG_NAME "elf64-sh64-nbsd"
4071 #undef TARGET_LITTLE_SYM
4072 #define TARGET_LITTLE_SYM bfd_elf64_sh64lnbsd_vec
4073 #undef TARGET_LITTLE_NAME
4074 #define TARGET_LITTLE_NAME "elf64-sh64l-nbsd"
4075 #undef ELF_MAXPAGESIZE
4076 #define ELF_MAXPAGESIZE 0x10000
4077 #undef elf_symbol_leading_char
4078 #define elf_symbol_leading_char 0
4079
4080 #define elf64_bed elf64_sh64_nbsd_bed
4081
4082 #include "elf64-target.h"
4083
4084 /* Linux support. */
4085 #undef TARGET_BIG_SYM
4086 #define TARGET_BIG_SYM bfd_elf64_sh64blin_vec
4087 #undef TARGET_BIG_NAME
4088 #define TARGET_BIG_NAME "elf64-sh64big-linux"
4089 #undef TARGET_LITTLE_SYM
4090 #define TARGET_LITTLE_SYM bfd_elf64_sh64lin_vec
4091 #undef TARGET_LITTLE_NAME
4092 #define TARGET_LITTLE_NAME "elf64-sh64-linux"
4093 #undef elf64_bed
4094 #define elf64_bed elf64_sh64_linux_bed
4095
4096 #include "elf64-target.h"
GDB Binutils - Deliverables
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