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[thirdparty/binutils-gdb.git] / bfd / elf32-csky.c
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b8891f8d 1/* 32-bit ELF support for C-SKY.
250d07de 2 Copyright (C) 1998-2021 Free Software Foundation, Inc.
b8891f8d
AJ		 3 Contributed by C-SKY Microsystems and Mentor Graphics.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22#include "sysdep.h"
23#include "bfd.h"
24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
27#include "elf/csky.h"
28#include "opcode/csky.h"
29#include <assert.h>
30#include "libiberty.h"
6e67e6b0 31#include "elf32-csky.h"
b8891f8d
AJ		 32
33/* Data structures used for merging different arch variants.
34 V1 (510/610) and V2 (8xx) processors are incompatible, but
35 we can merge wthin each family. */
36
37enum merge_class
38{
39 CSKY_V1,
40 CSKY_V2
41};
42
bd38246a 43typedef const struct csky_arch_for_merge
b8891f8d
AJ		 44{
45 const char *name;
46 const unsigned long arch_eflag;
47 /* The files can merge only if they are in same class. */
48 enum merge_class class;
49 /* When input files have different levels,
50 the target sets arch_eflag to the largest level file's arch_eflag. */
51 unsigned int class_level;
52 /* Control whether to print warning when merging with different arch. */
53 unsigned int do_warning;
54} csky_arch_for_merge;
55
bd38246a 56static csky_arch_for_merge csky_archs[] =
b8891f8d
AJ		 57{
58 /* 510 and 610 merge to 610 without warning. */
0861f561
CQ		 59 { "ck510", CSKY_ARCH_510, CSKY_V1, 0, 0},
60 { "ck610", CSKY_ARCH_610, CSKY_V1, 1, 0},
b8891f8d 61 /* 801, 802, 803, 807, 810 merge to largest one. */
0861f561
CQ		 62 { "ck801", CSKY_ARCH_801, CSKY_V2, 0, 1},
63 { "ck802", CSKY_ARCH_802, CSKY_V2, 1, 1},
64 { "ck803", CSKY_ARCH_803, CSKY_V2, 2, 1},
65 { "ck807", CSKY_ARCH_807, CSKY_V2, 3, 1},
66 { "ck810", CSKY_ARCH_810, CSKY_V2, 4, 1},
67 { "ck860", CSKY_ARCH_860, CSKY_V2, 5, 1},
b8891f8d
AJ		 68 { NULL, 0, 0, 0, 0}
69};
70
71/* Return the ARCH bits out of ABFD. */
72#define bfd_csky_arch(abfd) \
73 (elf_elfheader (abfd)->e_flags & CSKY_ARCH_MASK)
74
75/* Return the ABI bits out of ABFD. */
76#define bfd_csky_abi(abfd) \
77 (elf_elfheader (abfd)->e_flags & CSKY_ABI_MASK)
78
79
80/* The index of a howto-item is implicitly equal to
81 the corresponding Relocation Type Encoding. */
82static reloc_howto_type csky_elf_howto_table[] =
83{
84 /* 0 */
85 HOWTO (R_CKCORE_NONE, /* type */
86 0, /* rightshift */
87 0, /* size */
88 0, /* bitsize */
89 FALSE, /* pc_relative */
90 0, /* bitpos */
91 complain_overflow_dont, /* complain_on_overflow */
92 NULL, /* special_function */
93 "R_CKCORE_NONE", /* name */
94 FALSE, /* partial_inplace */
95 0, /* src_mask */
96 0, /* dst_mask */
97 FALSE), /* pcrel_offset */
98
99 /* 1. */
100 HOWTO (R_CKCORE_ADDR32, /* type */
101 0, /* rightshift */
102 2, /* size */
103 32, /* bitsize */
104 FALSE, /* pc_relative */
105 0, /* bitpos */
106 complain_overflow_dont, /* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_CKCORE_ADDR32", /* name */
109 FALSE, /* partial_inplace */
110 0, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE), /* pcrel_offset */
113
114 /* 2: Only for csky v1. */
115 HOWTO (R_CKCORE_PCREL_IMM8BY4, /* type */
116 2, /* rightshift */
117 1, /* size */
118 8, /* bitsize */
119 TRUE, /* pc_relative */
120 0, /* bitpos */
121 complain_overflow_bitfield, /* complain_on_overflow */
122 NULL, /* special_function */
123 "R_CKCORE_PCREL_IMM8BY4", /* name */
124 FALSE, /* partial_inplace */
125 0xff, /* src_mask */
126 0xff, /* dst_mask */
127 TRUE), /* pcrel_offset */
128
129 /* 3: Only for csky v1. */
130 HOWTO (R_CKCORE_PCREL_IMM11BY2, /* type */
131 1, /* rightshift */
132 1, /* size */
133 11, /* bitsize */
134 TRUE, /* pc_relative */
135 0, /* bitpos */
136 complain_overflow_signed, /* complain_on_overflow */
137 bfd_elf_generic_reloc, /* special_function */
138 "R_CKCORE_PCREL_IMM11BY2", /* name */
139 FALSE, /* partial_inplace */
140 0x7ff, /* src_mask */
141 0x7ff, /* dst_mask */
142 TRUE), /* pcrel_offset */
143
144 /* 4: DELETED. */
145 HOWTO (R_CKCORE_PCREL_IMM4BY2,0,0,0,0,0,0,0,"R_CKCORE_PCREL_IMM4BY2",0,0,0,0),
146
147 /* 5. */
148 HOWTO (R_CKCORE_PCREL32, /* type */
149 0, /* rightshift */
150 2, /* size */
151 32, /* bitsize */
152 TRUE, /* pc_relative */
153 0, /* bitpos */
154 complain_overflow_dont, /* complain_on_overflow */
fe75f42e 155 bfd_elf_generic_reloc, /* special_function */
b8891f8d
AJ		 156 "R_CKCORE_PCREL32", /* name */
157 FALSE, /* partial_inplace */
158 0x0, /* src_mask */
159 0xffffffff, /* dst_mask */
160 TRUE), /* pcrel_offset */
161
162 /* 6: Only for csky v1. */
163 HOWTO (R_CKCORE_PCREL_JSR_IMM11BY2, /* type */
164 1, /* rightshift */
165 1, /* size */
166 11, /* bitsize */
167 TRUE, /* pc_relative */
168 0, /* bitpos */
169 complain_overflow_signed, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_CKCORE_PCREL_JSR_IMM11BY2", /* name */
172 FALSE, /* partial_inplace */
173 0x7ff, /* src_mask */
174 0x7ff, /* dst_mask */
175 TRUE), /* pcrel_offset */
176
177 /* 7: GNU extension to record C++ vtable member usage. */
178 HOWTO (R_CKCORE_GNU_VTENTRY, /* type */
179 0, /* rightshift */
180 2, /* size */
181 0, /* bitsize */
182 FALSE, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_dont, /* complain_on_overflow */
185 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
186 "R_CKCORE_GNU_VTENTRY", /* name */
187 FALSE, /* partial_inplace */
188 0x0, /* src_mask */
189 0x0, /* dst_mask */
190 FALSE), /* pcrel_offset */
191
192 /* 8: GNU extension to record C++ vtable hierarchy. */
193 HOWTO (R_CKCORE_GNU_VTINHERIT, /* type */
194 0, /* rightshift */
195 2, /* size */
196 0, /* bitsize */
197 FALSE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_dont, /* complain_on_overflow */
200 NULL, /* special_function */
201 "R_CKCORE_GNU_VTINHERIT", /* name */
202 FALSE, /* partial_inplace */
203 0x0, /* src_mask */
204 0x0, /* dst_mask */
205 FALSE), /* pcrel_offset */
206
207 /* 9. */
208 HOWTO (R_CKCORE_RELATIVE, /* type */
209 0, /* rightshift */
210 2, /* size */
211 32, /* bitsize */
212 FALSE, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_signed, /* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_CKCORE_RELATIVE", /* name */
217 TRUE, /* partial_inplace */
218 0x0, /* src_mask */
219 0xffffffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
221
222 /* 10: None. */
223 /* FIXME: It is a bug that copy relocations are not implemented. */
224 HOWTO (R_CKCORE_COPY, /* type */
225 0, /* rightshift */
226 2, /* size */
227 32, /* bitsize */
228 FALSE, /* pc_relative */
229 0, /* bitpos */
230 complain_overflow_bitfield, /* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_CKCORE_COPY", /* name */
233 TRUE, /* partial_inplace */
234 0xffffffff, /* src_mask */
235 0xffffffff, /* dst_mask */
236 FALSE), /* pcrel_offset */
237
238 /* 11: None. */
239 HOWTO (R_CKCORE_GLOB_DAT,0,0,0,0,0,0,0,"R_CKCORE_GLOB_DAT",0,0,0,0),
240
241 /* 12: None. */
242 HOWTO (R_CKCORE_JUMP_SLOT,0,0,0,0,0,0,0,"R_CKCORE_JUMP_SLOT",0,0,0,0),
243
244 /* 13. */
245 HOWTO (R_CKCORE_GOTOFF, /* type */
246 0, /* rightshift */
247 2, /* size */
248 32, /* bitsize */
249 FALSE, /* pc_relative */
250 0, /* bitpos */
251 complain_overflow_dont, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_CKCORE_GOTOFF", /* name */
254 TRUE, /* partial_inplace */
255 0x0, /* src_mask */
256 0xffffffffl, /* dst_mask */
257 FALSE), /* pcrel_offset */
258
259 /* 14. */
260 HOWTO (R_CKCORE_GOTPC, /* type */
261 0, /* rightshift */
262 2, /* size */
263 32, /* bitsize */
264 TRUE, /* pc_relative */
265 0, /* bitpos */
266 complain_overflow_dont, /* complain_on_overflow */
267 bfd_elf_generic_reloc, /* special_function */
268 "R_CKCORE_GOTPC", /* name */
269 TRUE, /* partial_inplace */
270 0x0, /* src_mask */
271 0xffffffff, /* dst_mask */
272 FALSE), /* pcrel_offset */
273
274 /* 15. */
275 HOWTO (R_CKCORE_GOT32, /* type */
276 0, /* rightshift */
277 2, /* size */
278 32, /* bitsize */
279 FALSE, /* pc_relative */
280 0, /* bitpos */
281 complain_overflow_dont, /* complain_on_overflow */
282 bfd_elf_generic_reloc, /* special_function */
283 "R_CKCORE_GOT32", /* name */
284 TRUE, /* partial_inplace */
285 0x0, /* src_mask */
286 0xffffffff, /* dst_mask */
287 TRUE), /* pcrel_offset */
288
289 /* 16. */
290 HOWTO (R_CKCORE_PLT32, /* type */
291 0, /* rightshift */
292 2, /* size */
293 32, /* bitsize */
294 FALSE, /* pc_relative */
295 0, /* bitpos */
296 complain_overflow_dont, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_CKCORE_PLT32", /* name */
299 TRUE, /* partial_inplace */
300 0x0, /* src_mask */
301 0xffffffff, /* dst_mask */
302 TRUE), /* pcrel_offset */
303
304 /* 17: None. */
305 HOWTO (R_CKCORE_ADDRGOT,0,0,0,0,0,0,0,"R_CKCORE_ADDRGOT",0,0,0,0),
306
307 /* 18: None. */
308 HOWTO (R_CKCORE_ADDRPLT,0,0,0,0,0,0,0,"R_CKCORE_ADDRPLT",0,0,0,0),
309
310 /* 19: Only for csky v2. */
311 HOWTO (R_CKCORE_PCREL_IMM26BY2, /* type */
312 1, /* rightshift */
313 2, /* size */
314 26, /* bitsize */
315 TRUE, /* pc_relative */
316 0, /* bitpos */
317 complain_overflow_signed, /* complain_on_overflow */
318 bfd_elf_generic_reloc, /* special_function */
319 "R_CKCORE_PCREL_IMM26BY2", /* name */
320 FALSE, /* partial_inplace */
321 0x0, /* src_mask */
322 0x3ffffff, /* dst_mask */
323 TRUE), /* pcrel_offset */
324
325 /* 20: Only for csky v2. */
326 HOWTO (R_CKCORE_PCREL_IMM16BY2, /* type */
327 1, /* rightshift */
328 2, /* size */
329 16, /* bitsize */
330 TRUE, /* pc_relative */
331 0, /* bitpos */
332 complain_overflow_signed, /* complain_on_overflow */
333 NULL, /* special_function */
334 "R_CKCORE_PCREL_IMM16BY2", /* name */
335 FALSE, /* partial_inplace */
336 0x0, /* src_mask */
337 0xffff, /* dst_mask */
338 TRUE), /* pcrel_offset */
339
340 /* 21: Only for csky v2. */
341 HOWTO (R_CKCORE_PCREL_IMM16BY4, /* type */
342 2, /* rightshift */
343 2, /* size */
344 16, /* bitsize */
345 TRUE, /* pc_relative */
346 0, /* bitpos */
347 complain_overflow_bitfield, /* complain_on_overflow */
348 NULL, /* special_function */
349 "R_CKCORE_PCREL_IMM16BY4", /* name */
350 FALSE, /* partial_inplace */
351 0xffff0000, /* src_mask */
352 0xffff, /* dst_mask */
353 TRUE), /* pcrel_offset */
354
355 /* 22: Only for csky v2. */
356 HOWTO (R_CKCORE_PCREL_IMM10BY2, /* type */
357 1, /* rightshift */
358 1, /* size */
359 10, /* bitsize */
360 TRUE, /* pc_relative */
361 0, /* bitpos */
362 complain_overflow_signed, /* complain_on_overflow */
363 bfd_elf_generic_reloc, /* special_function */
364 "R_CKCORE_PCREL_IMM10BY2", /* name */
365 FALSE, /* partial_inplace */
366 0x0, /* src_mask */
367 0x3ff, /* dst_mask */
368 TRUE), /* pcrel_offset */
369
370 /* 23: Only for csky v2. */
371 HOWTO (R_CKCORE_PCREL_IMM10BY4, /* type */
372 2, /* rightshift */
373 2, /* size */
374 10, /* bitsize */
375 TRUE, /* pc_relative */
376 0, /* bitpos */
377 complain_overflow_bitfield, /* complain_on_overflow */
378 NULL, /* special_function */
379 "R_CKCORE_PCREL_IMM10BY4", /* name */
380 FALSE, /* partial_inplace */
381 0x0, /* src_mask */
382 0x3ff, /* dst_mask */
383 TRUE), /* pcrel_offset */
384
385 /* 24: Only for csky v2. */
386 HOWTO (R_CKCORE_ADDR_HI16, /* type */
387 16, /* rightshift */
388 2, /* size */
389 16, /* bitsize */
390 FALSE, /* pc_relative */
391 0, /* bitpos */
392 complain_overflow_dont, /* complain_on_overflow */
393 bfd_elf_generic_reloc, /* special_function */
394 "R_CKCORE_ADDR_HI16", /* name */
395 FALSE, /* partial_inplace */
396 0x0, /* src_mask */
397 0xffff, /* dst_mask */
398 FALSE), /* pcrel_offset */
399
400 /* 25. */
401 HOWTO (R_CKCORE_ADDR_LO16, /* type */
402 0, /* rightshift */
403 2, /* size */
404 16, /* bitsize */
405 FALSE, /* pc_relative */
406 0, /* bitpos */
407 complain_overflow_dont, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_CKCORE_ADDR_LO16", /* name */
410 FALSE, /* partial_inplace */
411 0x0, /* src_mask */
412 0xffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
414
415 /* 26. */
416 HOWTO (R_CKCORE_GOTPC_HI16, /* type */
417 16, /* rightshift */
418 2, /* size */
419 16, /* bitsize */
420 TRUE, /* pc_relative */
421 0, /* bitpos */
422 complain_overflow_dont, /* complain_on_overflow */
423 bfd_elf_generic_reloc, /* special_function */
424 "R_CKCORE_GOTPC_HI16", /* name */
425 FALSE, /* partial_inplace */
426 0x0, /* src_mask */
427 0xffff, /* dst_mask */
428 FALSE), /* pcrel_offset */
429
430 /* 27. */
431 HOWTO (R_CKCORE_GOTPC_LO16, /* type */
432 0, /* rightshift */
433 2, /* size */
434 16, /* bitsize */
435 TRUE, /* pc_relative */
436 0, /* bitpos */
437 complain_overflow_dont, /* complain_on_overflow */
438 bfd_elf_generic_reloc, /* special_function */
439 "R_CKCORE_GOTPC_LO16", /* name */
440 FALSE, /* partial_inplace */
441 0x0, /* src_mask */
442 0xffff, /* dst_mask */
443 FALSE), /* pcrel_offset */
444
445 /* 28. */
446 HOWTO (R_CKCORE_GOTOFF_HI16, /* type */
447 16, /* rightshift */
448 2, /* size */
449 16, /* bitsize */
450 FALSE, /* pc_relative */
451 0, /* bitpos */
452 complain_overflow_dont, /* complain_on_overflow */
453 bfd_elf_generic_reloc, /* special_function */
454 "R_CKCORE_GOTOFF_HI16", /* name */
455 FALSE, /* partial_inplace */
456 0x0, /* src_mask */
457 0xffff, /* dst_mask */
458 FALSE), /* pcrel_offset */
459
460 /* 29. */
461 HOWTO (R_CKCORE_GOTOFF_LO16, /* type */
462 0, /* rightshift */
463 2, /* size */
464 16, /* bitsize */
465 FALSE, /* pc_relative */
466 0, /* bitpos */
467 complain_overflow_dont, /* complain_on_overflow */
468 bfd_elf_generic_reloc, /* special_function */
469 "R_CKCORE_GOTOFF_LO16", /* name */
470 FALSE, /* partial_inplace */
471 0x0, /* src_mask */
472 0xffff, /* dst_mask */
473 FALSE), /* pcrel_offset */
474
475 /* 30. */
476 HOWTO (R_CKCORE_GOT12, /* type */
477 2, /* rightshift */
478 2, /* size */
479 12, /* bitsize */
480 FALSE, /* pc_relative */
481 0, /* bitpos */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_CKCORE_GOT12", /* name */
485 TRUE, /* partial_inplace */
486 0x0, /* src_mask */
487 0xfff, /* dst_mask */
488 FALSE), /* pcrel_offset */
489
490 /* 31. */
491 HOWTO (R_CKCORE_GOT_HI16, /* type */
492 16, /* rightshift */
493 2, /* size */
494 16, /* bitsize */
495 FALSE, /* pc_relative */
496 0, /* bitpos */
497 complain_overflow_dont, /* complain_on_overflow */
498 bfd_elf_generic_reloc, /* special_function */
499 "R_CKCORE_GOT_HI16", /* name */
500 TRUE, /* partial_inplace */
501 0x0, /* src_mask */
502 0xffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
504
505 /* 32. */
506 HOWTO (R_CKCORE_GOT_LO16, /* type */
507 0, /* rightshift */
508 2, /* size */
509 16, /* bitsize */
510 FALSE, /* pc_relative */
511 0, /* bitpos */
512 complain_overflow_dont, /* complain_on_overflow */
513 bfd_elf_generic_reloc, /* special_function */
514 "R_CKCORE_GOT_LO16", /* name */
515 TRUE, /* partial_inplace */
516 0x0, /* src_mask */
517 0xffff, /* dst_mask */
518 FALSE), /* pcrel_offset */
519
520 /* 33. */
521 HOWTO (R_CKCORE_PLT12, /* type */
522 2, /* rightshift */
523 2, /* size */
524 12, /* bitsize */
525 FALSE, /* pc_relative */
526 0, /* bitpos */
527 complain_overflow_bitfield, /* complain_on_overflow */
528 bfd_elf_generic_reloc, /* special_function */
529 "R_CKCORE_PLT12", /* name */
530 TRUE, /* partial_inplace */
531 0x0, /* src_mask */
532 0xfff, /* dst_mask */
533 FALSE), /* pcrel_offset */
534
535 /* 34. */
536 HOWTO (R_CKCORE_PLT_HI16, /* type */
537 16, /* rightshift */
538 2, /* size */
539 16, /* bitsize */
540 FALSE, /* pc_relative */
541 0, /* bitpos */
542 complain_overflow_dont, /* complain_on_overflow */
543 bfd_elf_generic_reloc, /* special_function */
544 "R_CKCORE_PLT_HI16", /* name */
545 TRUE, /* partial_inplace */
546 0x0, /* src_mask */
547 0xffff, /* dst_mask */
548 FALSE), /* pcrel_offset */
549
550 /* 35. */
551 HOWTO (R_CKCORE_PLT_LO16, /* type */
552 0, /* rightshift */
553 2, /* size */
554 16, /* bitsize */
555 FALSE, /* pc_relative */
556 0, /* bitpos */
557 complain_overflow_dont, /* complain_on_overflow */
558 bfd_elf_generic_reloc, /* special_function */
559 "R_CKCORE_PLT_LO16", /* name */
560 TRUE, /* partial_inplace */
561 0x0, /* src_mask */
562 0xffff, /* dst_mask */
563 FALSE), /* pcrel_offset */
564
565 /* 36: None. */
566 HOWTO (R_CKCORE_ADDRGOT_HI16,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0),
567
568 /* 37: None. */
569 HOWTO (R_CKCORE_ADDRGOT_LO16,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0),
570
571 /* 38: None. */
572 HOWTO (R_CKCORE_ADDRPLT_HI16,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0),
573
574 /* 39: None. */
575 HOWTO (R_CKCORE_ADDRPLT_LO16,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0),
576
577 /* 40. */
578 HOWTO (R_CKCORE_PCREL_JSR_IMM26BY2, /* type */
579 1, /* rightshift */
580 2, /* size */
581 26, /* bitsize */
582 TRUE, /* pc_relative */
583 0, /* bitpos */
584 complain_overflow_signed, /* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_CKCORE_PCREL_JSR_IMM26BY2", /* name */
587 FALSE, /* partial_inplace */
588 0x0, /* src_mask */
589 0x3ffffff, /* dst_mask */
590 TRUE), /* pcrel_offset */
591
592 /* 41. */
593 HOWTO (R_CKCORE_TOFFSET_LO16, /* type */
594 0, /* rightshift */
595 2, /* size */
596 16, /* bitsize */
597 FALSE, /* pc_relative */
598 0, /* bitpos */
599 complain_overflow_unsigned, /* complain_on_overflow */
600 NULL, /* special_function */
601 "R_CKCORE_TOFFSET_LO16", /* name */
602 FALSE, /* partial_inplace */
603 0x0, /* src_mask */
604 0xffff, /* dst_mask */
605 FALSE), /* pcrel_offset */
606
607 /* 42. */
608 HOWTO (R_CKCORE_DOFFSET_LO16, /* type */
609 0, /* rightshift */
610 2, /* size */
611 16, /* bitsize */
612 FALSE, /* pc_relative */
613 0, /* bitpos */
614 complain_overflow_unsigned, /* complain_on_overflow */
615 NULL, /* special_function */
616 "R_CKCORE_DOFFSET_LO16", /* name */
617 FALSE, /* partial_inplace */
618 0x0, /* src_mask */
619 0xffff, /* dst_mask */
620 FALSE), /* pcrel_offset */
621
622 /* 43. */
623 HOWTO (R_CKCORE_PCREL_IMM18BY2, /* type */
624 1, /* rightshift */
625 2, /* size */
626 18, /* bitsize */
627 TRUE, /* pc_relative */
628 0, /* bitpos */
629 complain_overflow_signed, /* complain_on_overflow */
630 NULL, /* special_function */
631 "R_CKCORE_PCREL_IMM18BY2", /* name */
632 FALSE, /* partial_inplace */
633 0x0, /* src_mask */
634 0x3ffff, /* dst_mask */
635 TRUE), /* pcrel_offset */
636
637 /* 44. */
638 HOWTO (R_CKCORE_DOFFSET_IMM18, /* type */
639 0, /* rightshift */
640 2, /* size */
641 18, /* bitsize */
642 FALSE, /* pc_relative */
643 0, /* bitpos */
644 complain_overflow_unsigned, /* complain_on_overflow */
645 NULL, /* special_function */
646 "R_CKCORE_DOFFSET_IMM18", /* name */
647 FALSE, /* partial_inplace */
648 0x0, /* src_mask */
649 0x3ffff, /* dst_mask */
650 FALSE), /* pcrel_offset */
651
652 /* 45. */
653 HOWTO (R_CKCORE_DOFFSET_IMM18BY2, /* type */
654 1, /* rightshift */
655 2, /* size */
656 18, /* bitsize */
657 FALSE, /* pc_relative */
658 0, /* bitpos */
659 complain_overflow_unsigned, /* complain_on_overflow */
660 NULL, /* special_function */
661 "R_CKCORE_DOFFSET_IMM18BY2", /* name */
662 FALSE, /* partial_inplace */
663 0x0, /* src_mask */
664 0x3ffff, /* dst_mask */
665 FALSE), /* pcrel_offset */
666
667 /* 46. */
668 HOWTO (R_CKCORE_DOFFSET_IMM18BY4, /* type */
669 2, /* rightshift */
670 2, /* size */
671 18, /* bitsize */
672 FALSE, /* pc_relative */
673 0, /* bitpos */
674 complain_overflow_unsigned, /* complain_on_overflow */
675 NULL, /* special_function */
676 "R_CKCORE_DOFFSET_IMM18BY4", /* name */
677 FALSE, /* partial_inplace */
678 0x0, /* src_mask */
679 0x3ffff, /* dst_mask */
680 FALSE), /* pcrel_offset */
681
682 /* 47. */
683 HOWTO (R_CKCORE_GOTOFF_IMM18, /* type */
684 0, /* rightshift */
685 2, /* size */
686 18, /* bitsize */
687 FALSE, /* pc_relative */
688 0, /* bitpos */
689 complain_overflow_bitfield, /* complain_on_overflow */
690 bfd_elf_generic_reloc, /* special_function */
691 "R_CKCORE_GOTOFF_IMM18", /* name */
692 TRUE, /* partial_inplace */
693 0xfffc, /* src_mask */
694 0x3ffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
696
697 /* 48. */
698 HOWTO (R_CKCORE_GOT_IMM18BY4, /* type */
699 2, /* rightshift */
700 2, /* size */
701 18, /* bitsize */
702 FALSE, /* pc_relative */
703 0, /* bitpos */
704 complain_overflow_bitfield, /* complain_on_overflow */
705 bfd_elf_generic_reloc, /* special_function */
706 "R_CKCORE_GOT_IMM18BY4", /* name */
707 TRUE, /* partial_inplace */
708 0xfffc, /* src_mask */
709 0x3ffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
711
712 /* 49. */
713 HOWTO (R_CKCORE_PLT_IMM18BY4, /* type */
714 2, /* rightshift */
715 2, /* size */
716 18, /* bitsize */
717 FALSE, /* pc_relative */
718 0, /* bitpos */
719 complain_overflow_bitfield, /* complain_on_overflow */
720 bfd_elf_generic_reloc, /* special_function */
721 "R_CKCORE_PLT_IMM18BY4", /* name */
722 TRUE, /* partial_inplace */
723 0xfffc, /* src_mask */
724 0x3ffff, /* dst_mask */
725 TRUE), /* pcrel_offset */
726
727 /* 50: for lrw16. */
728 HOWTO (R_CKCORE_PCREL_IMM7BY4, /* type */
729 2, /* rightshift */
730 1, /* size */
731 7, /* bitsize */
732 TRUE, /* pc_relative */
733 0, /* bitpos */
734 complain_overflow_bitfield, /* complain_on_overflow */
735 bfd_elf_generic_reloc, /* special_function */
736 "R_CKCORE_PCREL_IMM7BY4", /* name */
737 FALSE, /* partial_inplace */
738 0xec1f, /* src_mask */
739 0x31f, /* dst_mask */
740 TRUE), /* pcrel_offset */
741
742 /* 51: for static nptl. */
743 HOWTO (R_CKCORE_TLS_LE32, /* type */
744 0, /* rightshift */
745 2, /* size */
746 32, /* bitsize */
747 FALSE, /* pc_relative */
748 0, /* bitpos */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
751 "R_CKCORE_TLS_LE32", /* name */
752 FALSE, /* partial_inplace */
753 0x0, /* src_mask */
754 0xffffffff, /* dst_mask */
755 TRUE), /* pcrel_offset */
756
757 /* 52: for static nptl. */
758 HOWTO (R_CKCORE_TLS_IE32, /* type */
759 0, /* rightshift */
760 2, /* size */
761 32, /* bitsize */
762 FALSE, /* pc_relative */
763 0, /* bitpos */
764 complain_overflow_dont, /* complain_on_overflow */
765 bfd_elf_generic_reloc, /* special_function */
766 "R_CKCORE_TLS_IE32", /* name */
767 FALSE, /* partial_inplace */
768 0x0, /* src_mask */
769 0xffffffff, /* dst_mask */
770 TRUE), /* pcrel_offset */
771
772 /* 53: for pic nptl. */
773 HOWTO (R_CKCORE_TLS_GD32, /* type */
774 0, /* rightshift */
775 2, /* size */
776 32, /* bitsize */
777 FALSE, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_CKCORE_TLS_GD32", /* name */
782 FALSE, /* partial_inplace */
783 0x0, /* src_mask */
784 0xffffffff, /* dst_mask */
785 TRUE), /* pcrel_offset */
786
787 /* 54: for pic nptl. */
788 HOWTO (R_CKCORE_TLS_LDM32, /* type */
789 0, /* rightshift */
790 2, /* size */
791 32, /* bitsize */
792 FALSE, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_CKCORE_TLS_LDM32", /* name */
797 FALSE, /* partial_inplace */
798 0x0, /* src_mask */
799 0xffffffff, /* dst_mask */
800 TRUE), /* pcrel_offset */
801
802 /* 55: for pic nptl. */
803 HOWTO (R_CKCORE_TLS_LDO32, /* type */
804 0, /* rightshift */
805 2, /* size */
806 32, /* bitsize */
807 FALSE, /* pc_relative */
808 0, /* bitpos */
809 complain_overflow_dont, /* complain_on_overflow */
810 bfd_elf_generic_reloc, /* special_function */
811 "R_CKCORE_TLS_LDO32", /* name */
812 FALSE, /* partial_inplace */
813 0x0, /* src_mask */
814 0xffffffff, /* dst_mask */
815 TRUE), /* pcrel_offset */
816
817 /* 56: for linker. */
818 HOWTO (R_CKCORE_TLS_DTPMOD32,0,0,0,0,0,0,0,"R_CKCORE_TLS_DTPMOD32",0,0,0,0),
819
820 /* 57: for linker. */
821 HOWTO (R_CKCORE_TLS_DTPOFF32,0,0,0,0,0,0,0,"R_CKCORE_TLS_DTPOFF32",0,0,0,0),
822
823 /* 58: for linker. */
824 HOWTO (R_CKCORE_TLS_TPOFF32,0,0,0,0,0,0,0,"R_CKCORE_TLS_TPOFF32",0,0,0,0),
825
826 /* 59: for ck807f. */
827 HOWTO (R_CKCORE_PCREL_FLRW_IMM8BY4, /* type */
828 2, /* rightshift */
829 2, /* size */
830 8, /* bitsize */
831 TRUE, /* pc_relative */
832 0, /* bitpos */
833 complain_overflow_bitfield, /* complain_on_overflow */
834 NULL, /* special_function */
835 "R_CKCORE_PCREL_FLRW_IMM8BY4", /* name */
836 FALSE, /* partial_inplace */
837 0xfe1fff0f, /* src_mask */
838 0x1e000f0, /* dst_mask */
839 TRUE), /* pcrel_offset */
840
841 /* 60: for 810 not to generate jsri. */
842 HOWTO (R_CKCORE_NOJSRI, /* type */
843 0, /* rightshift */
844 2, /* size */
845 32, /* bitsize */
846 FALSE, /* pc_relative */
847 0, /* bitpos */
848 complain_overflow_dont, /* complain_on_overflow */
849 bfd_elf_generic_reloc, /* special_function */
850 "R_CKCORE_NOJSRI", /* name */
851 FALSE, /* partial_inplace */
852 0xffff, /* src_mask */
853 0xffff, /* dst_mask */
854 FALSE), /* pcrel_offset */
855
856 /* 61: for callgraph. */
857 HOWTO (R_CKCORE_CALLGRAPH, /* type */
858 0, /* rightshift */
859 0, /* size */
860 0, /* bitsize */
861 FALSE, /* pc_relative */
862 0, /* bitpos */
863 complain_overflow_dont, /* complain_on_overflow */
864 NULL, /* special_function */
865 "R_CKCORE_CALLGRAPH", /* name */
866 FALSE, /* partial_inplace */
867 0x0, /* src_mask */
868 0x0, /* dst_mask */
869 TRUE), /* pcrel_offset */
870
871 /* 62: IRELATIVE*/
872 HOWTO (R_CKCORE_IRELATIVE,0,0,0,0,0,0,0,"R_CKCORE_IRELATIVE",0,0,0,0),
873
874 /* 63: for bloop instruction */
875 HOWTO (R_CKCORE_PCREL_BLOOP_IMM4BY4, /* type */
876 1, /* rightshift */
877 2, /* size */
878 4, /* bitsize */
879 1, /* pc_relative */
880 0, /* bitpos */
881 complain_overflow_signed, /* complain_on_overflow */
882 bfd_elf_generic_reloc, /* special_function */
883 "R_CKCORE_PCREL_BLOOP_IMM4BY4", /* name */
884 FALSE, /* partial_inplace */
885 0x0, /* src_mask */
886 0xf, /* dst_mask */
887 TRUE), /* pcrel_offset */
888 /* 64: for bloop instruction */
889 HOWTO (R_CKCORE_PCREL_BLOOP_IMM12BY4, /* type */
890 1, /* rightshift */
891 2, /* size */
892 12, /* bitsize */
893 1, /* pc_relative */
894 0, /* bitpos */
895 complain_overflow_signed, /* complain_on_overflow */
896 bfd_elf_generic_reloc, /* special_function */
897 "R_CKCORE_PCREL_BLOOP_IMM12BY4", /* name */
898 FALSE, /* partial_inplace */
899 0x0, /* src_mask */
900 0xfff, /* dst_mask */
901 TRUE), /* pcrel_offset */
902
903
904};
905
906
907/* Whether GOT overflow checking is needed. */
908static int check_got_overflow = 0;
909
910/* Whether the target 32 bits is forced so that the high
911 16 bits is at the low address. */
912static int need_reverse_bits;
913
914/* Used for relaxation. See csky_relocate_contents. */
915static bfd_vma read_content_substitute;
916
917/* NOTICE!
918 The way the following two look-up functions work demands
919 that BFD_RELOC_CKCORE_xxx are defined contiguously. */
920
921static reloc_howto_type *
922csky_elf_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
923 bfd_reloc_code_real_type code)
924{
925 int csky_code = code - BFD_RELOC_CKCORE_NONE;
926
927 if (csky_code < 0 || csky_code >= R_CKCORE_MAX)
928 {
929 switch (code)
930 {
931 case BFD_RELOC_NONE:
932 csky_code = R_CKCORE_NONE;
933 break;
934 case BFD_RELOC_32:
935 csky_code = R_CKCORE_ADDR32;
936 break;
937 case BFD_RELOC_32_PCREL:
938 csky_code = R_CKCORE_PCREL32;
939 break;
940 case BFD_RELOC_VTABLE_INHERIT:
941 csky_code = R_CKCORE_GNU_VTINHERIT;
942 break;
943 case BFD_RELOC_VTABLE_ENTRY:
944 csky_code = R_CKCORE_GNU_VTENTRY;
945 break;
946 case BFD_RELOC_RVA:
947 csky_code = R_CKCORE_RELATIVE;
948 break;
949 default:
950 return (reloc_howto_type *)NULL;
951 }
952 }
953 /* Note: when adding csky bfd reloc types in bfd-in2.h
954 and csky elf reloc types in elf/csky.h,
955 the order of the two reloc type tables should be consistent. */
956 return &csky_elf_howto_table[csky_code];
957}
958
959static reloc_howto_type *
960csky_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
961 const char *r_name)
962{
963 unsigned int i;
964 for (i = 0; i < R_CKCORE_MAX; i++)
965 if (strcasecmp (csky_elf_howto_table[i].name, r_name) == 0)
966 return &csky_elf_howto_table[i];
967 return NULL;
968}
969
970static reloc_howto_type *
971elf32_csky_howto_from_type (unsigned int r_type)
972{
973 if (r_type < R_CKCORE_MAX)
974 return &csky_elf_howto_table[r_type];
975 else
976 return NULL;
977}
978
979static bfd_boolean
980csky_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
981 arelent *cache_ptr,
982 Elf_Internal_Rela *dst)
983{
984 unsigned int r_type;
985
986 r_type = ELF32_R_TYPE (dst->r_info);
987 cache_ptr->howto = elf32_csky_howto_from_type (r_type);
988 if (cache_ptr->howto == NULL)
989 {
990 /* xgettext:c-format */
991 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
992 abfd, r_type);
993 bfd_set_error (bfd_error_bad_value);
994 return FALSE;
995 }
996 return TRUE;
997}
998
999/* The Global Offset Table max size. */
1000#define GOT_MAX_SIZE 0xFFFF8
1001
1002/* The name of the dynamic interpreter. This is put in the .interp
1003 section. */
1004#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1005
1006/* The size in bytes of an entry in the procedure linkage table. */
1007#define PLT_ENTRY_SIZE 12
1008#define PLT_ENTRY_SIZE_P 16
1009
1010/* The first entry in a procedure linkage table looks like
1011 this. It is set up so that any shared library function that is
1012 called before the relocation has been set up calls the dynamic
1013 linker first. */
1014static const bfd_vma csky_elf_plt_entry_v2[PLT_ENTRY_SIZE / 4] =
1015{
1016 0xd99c2002, /* ldw r12, (gb, 8) */
1017 0xea0d0000, /* movi r13,offset */
1018 0xe8cc0000 /* jmp r12 */
1019};
1020
1021static const bfd_vma csky_elf_plt_entry_v1[PLT_ENTRY_SIZE / 2 ] =
1022{
1023 0x25f0, /* subi r0, 32 */
1024 0x9200, /* stw r2, (r0, 0) */
1025 0x9310, /* stw r3, (r0, 4) */
1026 0x822e, /* ldw r2, (gb, 8) */
1027 0x7301, /* lrw r3, #offset */
1028 0x00c2, /* jmp r2 */
1029};
1030
1031/* Branch stub support. */
1032
1033enum stub_insn_type
1034{
1035 INSN16,
1036 INSN32,
1037 DATA_TYPE
1038};
1039
1040bfd_boolean use_branch_stub = TRUE;
1041typedef struct
1042{
1043 bfd_vma data;
1044 enum stub_insn_type type;
1045 unsigned int r_type;
1046 int reloc_addend;
1047} insn_sequence;
1048
1049static const insn_sequence elf32_csky_stub_long_branch[] =
1050{
1051 {0xea8d0002, INSN32, R_CKCORE_NONE, 0x0}, /* lrw t1,[pc+8] */
1052 {0x7834, INSN16, R_CKCORE_NONE, 0x0}, /* jmp t1 */
1053 {0x6c03, INSN16, R_CKCORE_NONE, 0x0}, /* nop */
1054 {0x0, DATA_TYPE, R_CKCORE_ADDR32, 0x0} /* .long addr */
1055};
1056
1057static const insn_sequence elf32_csky_stub_long_branch_jmpi[] =
1058{
1059 {0xeac00001, INSN32, R_CKCORE_NONE, 0x0}, /* jmpi [pc+4] */
1060 {0x0, DATA_TYPE, R_CKCORE_ADDR32, 0x0} /* .long addr */
1061};
1062
1063/* The bsr instruction offset limit. */
1064#define BSR_MAX_FWD_BRANCH_OFFSET (((1 << 25) - 1) << 1)
1065#define BSR_MAX_BWD_BRANCH_OFFSET (-(1 << 26))
1066
1067#define STUB_SUFFIX ".stub"
1068#define STUB_ENTRY_NAME "__%s_veneer"
1069
1070/* One entry per long/short branch stub defined above. */
1071#define DEF_STUBS \
1072 DEF_STUB(long_branch) \
1073 DEF_STUB(long_branch_jmpi)
1074
1075#define DEF_STUB(x) csky_stub_##x,
1076enum elf32_csky_stub_type
1077{
1078 csky_stub_none,
1079 DEF_STUBS
1080};
1081#undef DEF_STUB
1082
1083typedef struct
1084{
1085 const insn_sequence* template_sequence;
1086 int template_size;
1087} stub_def;
1088
1089#define DEF_STUB(x) {elf32_csky_stub_##x, ARRAY_SIZE(elf32_csky_stub_##x)},
1090static const stub_def stub_definitions[] = {
1091 {NULL, 0},
1092 DEF_STUBS
1093};
1094
1095/* The size of the thread control block. */
1096#define TCB_SIZE 8
1097
1098struct csky_elf_obj_tdata
1099{
1100 struct elf_obj_tdata root;
1101
1102 /* tls_type for each local got entry. */
1103 char *local_got_tls_type;
1104};
1105
1106#define csky_elf_local_got_tls_type(bfd) \
1107 (csky_elf_tdata (bfd)->local_got_tls_type)
1108
1109#define csky_elf_tdata(bfd) \
1110 ((struct csky_elf_obj_tdata *) (bfd)->tdata.any)
1111
1112struct elf32_csky_stub_hash_entry
1113{
1114 /* Base hash table entry structure. */
1115 struct bfd_hash_entry root;
1116
1117 /* The stub section. */
1118 asection *stub_sec;
1119
1120 /* Offset within stub_sec of the beginning of this stub. */
1121 bfd_vma stub_offset;
1122
1123 /* Given the symbol's value and its section we can determine its final
1124 value when building the stubs (so the stub knows where to jump). */
1125 bfd_vma target_value;
1126 asection *target_section;
1127
1128 /* Offset to apply to relocation referencing target_value. */
1129 bfd_vma target_addend;
1130
1131 /* The stub type. */
1132 enum elf32_csky_stub_type stub_type;
1133 /* Its encoding size in bytes. */
1134 int stub_size;
1135 /* Its template. */
1136 const insn_sequence *stub_template;
1137 /* The size of the template (number of entries). */
1138 int stub_template_size;
1139
1140 /* The symbol table entry, if any, that this was derived from. */
1141 struct csky_elf_link_hash_entry *h;
1142
1143 /* Destination symbol type. */
1144 unsigned char st_type;
1145
1146 /* Where this stub is being called from, or, in the case of combined
1147 stub sections, the first input section in the group. */
1148 asection *id_sec;
1149
1150 /* The name for the local symbol at the start of this stub. The
1151 stub name in the hash table has to be unique; this does not, so
1152 it can be friendlier. */
1153 char *output_name;
1154};
1155
1156#define csky_stub_hash_lookup(table, string, create, copy) \
1157 ((struct elf32_csky_stub_hash_entry *) \
1158 bfd_hash_lookup ((table), (string), (create), (copy)))
1159
1160/* C-SKY ELF linker hash entry. */
1161struct csky_elf_link_hash_entry
1162{
1163 struct elf_link_hash_entry elf;
1164 int plt_refcount;
1165 /* For sub jsri2bsr relocs count. */
1166 int jsri2bsr_refcount;
b8891f8d
AJ		 1167
1168#define GOT_UNKNOWN 0
1169#define GOT_NORMAL 1
1170#define GOT_TLS_GD 2
1171#define GOT_TLS_IE 4
1172
1173 unsigned char tls_type;
1174
1175 /* A pointer to the most recently used stub hash entry against this
1176 symbol. */
1177 struct elf32_csky_stub_hash_entry *stub_cache;
1178};
1179
1180/* Traverse an C-SKY ELF linker hash table. */
1181#define csky_elf_link_hash_traverse(table, func, info) \
1182 (elf_link_hash_traverse \
1183 (&(table)->root, \
1184 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
1185 (info)))
1186
1187/* Get the C-SKY ELF linker hash table from a link_info structure. */
0f55320b
AM		 1188#define csky_elf_hash_table(p) \
1189 ((is_elf_hash_table ((p)->hash) \
1190 && elf_hash_table_id (elf_hash_table (p)) == CSKY_ELF_DATA) \
1191 ? (struct csky_elf_link_hash_table *) (p)->hash : NULL)
b8891f8d
AJ		 1192
1193#define csky_elf_hash_entry(ent) ((struct csky_elf_link_hash_entry*)(ent))
1194
1195/* Array to keep track of which stub sections have been created, and
1196 information on stub grouping. */
1197struct map_stub
1198{
1199 /* This is the section to which stubs in the group will be
1200 attached. */
1201 asection *link_sec;
1202 /* The stub section. */
1203 asection *stub_sec;
1204};
1205
1206/* C-SKY ELF linker hash table. */
1207struct csky_elf_link_hash_table
1208{
1209 struct elf_link_hash_table elf;
1210
b8891f8d
AJ		 1211 /* Data for R_CKCORE_TLS_LDM32 relocations. */
1212 union
1213 {
1214 bfd_signed_vma refcount;
1215 bfd_vma offset;
1216 } tls_ldm_got;
1217
1218 /* The stub hash table. */
1219 struct bfd_hash_table stub_hash_table;
1220
1221 /* Linker stub bfd. */
1222 bfd *stub_bfd;
1223
1224 /* Linker call-backs. */
1225 asection * (*add_stub_section) (const char *, asection *);
1226 void (*layout_sections_again) (void);
1227
1228 /* Array to keep track of which stub sections have been created, and
1229 * information on stub grouping. */
1230 struct map_stub *stub_group;
1231
1232 /* Number of elements in stub_group. */
1233 unsigned int top_id;
1234
1235 /* Assorted information used by elf32_csky_size_stubs. */
1236 unsigned int bfd_count;
1237 unsigned int top_index;
1238 asection **input_list;
1239};
1240
1241/* We can't change vectors in the bfd target which will apply to
1242 data sections, however we only do this to the text sections. */
1243
1244static bfd_vma
1245csky_get_insn_32 (bfd *input_bfd,
1246 bfd_byte *location)
1247{
1248 if (bfd_big_endian (input_bfd))
1249 return bfd_get_32 (input_bfd, location);
1250 else
1251 return (bfd_get_16 (input_bfd, location) << 16
1252 | bfd_get_16 (input_bfd, location + 2));
1253}
1254
1255static void
1256csky_put_insn_32 (bfd *input_bfd,
1257 bfd_vma x,
1258 bfd_byte *location)
1259{
1260 if (bfd_big_endian (input_bfd))
1261 bfd_put_32 (input_bfd, x, location);
1262 else
1263 {
1264 bfd_put_16 (input_bfd, x >> 16, location);
1265 bfd_put_16 (input_bfd, x & 0xffff, location + 2);
1266 }
1267}
1268
1269/* Find or create a stub section. Returns a pointer to the stub section, and
1270 the section to which the stub section will be attached (in *LINK_SEC_P).
1271 LINK_SEC_P may be NULL. */
1272
1273static asection *
1274elf32_csky_create_or_find_stub_sec (asection **link_sec_p, asection *section,
1275 struct csky_elf_link_hash_table *htab)
1276{
1277 asection *link_sec;
1278 asection *stub_sec;
1279
1280 link_sec = htab->stub_group[section->id].link_sec;
1281 stub_sec = htab->stub_group[section->id].stub_sec;
1282 if (stub_sec == NULL)
1283 {
1284 stub_sec = htab->stub_group[link_sec->id].stub_sec;
1285 if (stub_sec == NULL)
1286 {
1287 size_t namelen;
1288 bfd_size_type len;
1289 char *s_name;
1290
1291 namelen = strlen (link_sec->name);
1292 len = namelen + sizeof (STUB_SUFFIX);
1293 s_name = bfd_alloc (htab->stub_bfd, len);
1294 if (s_name == NULL)
1295 return NULL;
1296
1297 memcpy (s_name, link_sec->name, namelen);
1298 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
1299 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
1300 if (stub_sec == NULL)
1301 return NULL;
1302 htab->stub_group[link_sec->id].stub_sec = stub_sec;
1303 }
1304 htab->stub_group[section->id].stub_sec = stub_sec;
1305 }
1306
1307 if (link_sec_p)
1308 *link_sec_p = link_sec;
1309
1310 return stub_sec;
1311}
1312
1313/* Build a name for an entry in the stub hash table. */
1314
1315static char *
1316elf32_csky_stub_name (const asection *input_section,
1317 const asection *sym_sec,
1318 const struct csky_elf_link_hash_entry *hash,
1319 const Elf_Internal_Rela *rel)
1320{
1321 char *stub_name;
1322 bfd_size_type len;
1323
1324 if (hash)
1325 {
1326 len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1;
1327 stub_name = bfd_malloc (len);
1328 if (stub_name != NULL)
1329 sprintf (stub_name, "%08x_%s+%x",
1330 input_section->id & 0xffffffff,
1331 hash->elf.root.root.string,
1332 (int) rel->r_addend & 0xffffffff);
1333 }
1334 else
1335 {
1336 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
1337 stub_name = bfd_malloc (len);
1338 if (stub_name != NULL)
1339 sprintf (stub_name, "%08x_%x:%x+%x",
1340 input_section->id & 0xffffffff,
1341 sym_sec->id & 0xffffffff,
1342 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
1343 (int) rel->r_addend & 0xffffffff);
1344 }
1345
1346 return stub_name;
1347}
1348
1349/* Determine the type of stub needed, if any, for a call. */
1350
1351static enum elf32_csky_stub_type
1352csky_type_of_stub (struct bfd_link_info *info,
1353 asection *input_sec,
1354 const Elf_Internal_Rela *rel,
1355 unsigned char st_type,
1356 struct csky_elf_link_hash_entry *hash,
1357 bfd_vma destination,
1358 asection *sym_sec ATTRIBUTE_UNUSED,
1359 bfd *input_bfd ATTRIBUTE_UNUSED,
1360 const char *name ATTRIBUTE_UNUSED)
1361{
1362 bfd_vma location;
1363 bfd_signed_vma branch_offset;
1364 unsigned int r_type;
1365 enum elf32_csky_stub_type stub_type = csky_stub_none;
1366 struct elf_link_hash_entry * h = &hash->elf;
1367
1368 /* We don't know the actual type of destination in case it is of
1369 type STT_SECTION: give up. */
1370 if (st_type == STT_SECTION)
1371 return stub_type;
1372
1373 location = (input_sec->output_offset
1374 + input_sec->output_section->vma
1375 + rel->r_offset);
1376
1377 branch_offset = (bfd_signed_vma)(destination - location);
1378 r_type = ELF32_R_TYPE (rel->r_info);
1379 if (r_type == R_CKCORE_PCREL_IMM26BY2
1380 && ((h != NULL
1381 && ((h->def_dynamic && !h->def_regular)
1382 || (bfd_link_pic (info)
1383 && h->root.type == bfd_link_hash_defweak)))
1384 || branch_offset > BSR_MAX_FWD_BRANCH_OFFSET
1385 || branch_offset < BSR_MAX_BWD_BRANCH_OFFSET))
1386 {
1387 if (bfd_csky_arch (info->output_bfd) == CSKY_ARCH_810
1388 || bfd_csky_arch (info->output_bfd) == CSKY_ARCH_807)
1389 stub_type = csky_stub_long_branch_jmpi;
1390 else
1391 stub_type = csky_stub_long_branch;
1392 }
1393
1394 return stub_type;
1395}
1396
1397/* Create an entry in an C-SKY ELF linker hash table. */
1398
1399static struct bfd_hash_entry *
1400csky_elf_link_hash_newfunc (struct bfd_hash_entry * entry,
1401 struct bfd_hash_table * table,
1402 const char * string)
1403{
1404 struct csky_elf_link_hash_entry * ret =
1405 (struct csky_elf_link_hash_entry *) entry;
1406
1407 /* Allocate the structure if it has not already been allocated by a
1408 subclass. */
1409 if (ret == NULL)
1410 {
1411 ret = (struct csky_elf_link_hash_entry *)
1412 bfd_hash_allocate (table,
1413 sizeof (struct csky_elf_link_hash_entry));
1414 if (ret == NULL)
1415 return (struct bfd_hash_entry *) ret;
1416 }
1417
1418 /* Call the allocation method of the superclass. */
1419 ret = ((struct csky_elf_link_hash_entry *)
1420 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *)ret,
1421 table, string));
1422 if (ret != NULL)
1423 {
1424 struct csky_elf_link_hash_entry *eh;
1425
1426 eh = (struct csky_elf_link_hash_entry *) ret;
b8891f8d
AJ		 1427 eh->plt_refcount = 0;
1428 eh->jsri2bsr_refcount = 0;
1429 eh->tls_type = GOT_NORMAL;
1430 ret->stub_cache = NULL;
1431 }
1432
1433 return (struct bfd_hash_entry *) ret;
1434}
1435
1436/* Initialize an entry in the stub hash table. */
1437
1438static struct bfd_hash_entry *
1439stub_hash_newfunc (struct bfd_hash_entry *entry,
1440 struct bfd_hash_table *table,
1441 const char *string)
1442{
1443 /* Allocate the structure if it has not already been allocated by a
1444 subclass. */
1445 if (entry == NULL)
1446 {
1447 entry = ((struct bfd_hash_entry *)
1448 bfd_hash_allocate (table,
1449 sizeof (struct elf32_csky_stub_hash_entry)));
1450 if (entry == NULL)
1451 return entry;
1452 }
1453
1454 /* Call the allocation method of the superclass. */
1455 entry = bfd_hash_newfunc (entry, table, string);
1456 if (entry != NULL)
1457 {
1458 struct elf32_csky_stub_hash_entry *eh;
1459
1460 /* Initialize the local fields. */
1461 eh = (struct elf32_csky_stub_hash_entry *) entry;
1462 eh->stub_sec = NULL;
1463 eh->stub_offset = 0;
1464 eh->target_value = 0;
1465 eh->target_section = NULL;
1466 eh->target_addend = 0;
1467 eh->stub_type = csky_stub_none;
1468 eh->stub_size = 0;
1469 eh->stub_template = NULL;
1470 eh->stub_template_size = -1;
1471 eh->h = NULL;
1472 eh->id_sec = NULL;
1473 eh->output_name = NULL;
1474 }
1475
1476 return entry;
1477}
1478
1479/* Free the derived linker hash table. */
1480
1481static void
1482csky_elf_link_hash_table_free (bfd *obfd)
1483{
1484 struct csky_elf_link_hash_table *ret
1485 = (struct csky_elf_link_hash_table *) obfd->link.hash;
1486
1487 bfd_hash_table_free (&ret->stub_hash_table);
1488 _bfd_elf_link_hash_table_free (obfd);
1489}
1490
1491/* Create an CSKY elf linker hash table. */
1492
1493static struct bfd_link_hash_table *
1494csky_elf_link_hash_table_create (bfd *abfd)
1495{
1496 struct csky_elf_link_hash_table *ret;
986f0783 1497 size_t amt = sizeof (struct csky_elf_link_hash_table);
b8891f8d
AJ		 1498
1499 ret = (struct csky_elf_link_hash_table*) bfd_zmalloc (amt);
1500 if (ret == NULL)
1501 return NULL;
1502
1503 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1504 csky_elf_link_hash_newfunc,
1505 sizeof (struct csky_elf_link_hash_entry),
1506 CSKY_ELF_DATA))
1507 {
1508 free (ret);
1509 return NULL;
1510 }
1511
1512 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
1513 sizeof (struct elf32_csky_stub_hash_entry)))
1514 {
1515 free (ret);
1516 return NULL;
1517 }
1518 ret->elf.root.hash_table_free = csky_elf_link_hash_table_free;
1519 return &ret->elf.root;
1520}
1521
1522static bfd_boolean
1523csky_elf_mkobject (bfd *abfd)
1524{
1525 return bfd_elf_allocate_object (abfd, sizeof (struct csky_elf_obj_tdata),
1526 CSKY_ELF_DATA);
1527}
1528
1529/* Adjust a symbol defined by a dynamic object and referenced by a
1530 regular object. The current definition is in some section of the
1531 dynamic object, but we're not including those sections. We have to
1532 change the definition to something the rest of the link can
1533 understand. */
1534
1535static bfd_boolean
1536csky_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1537 struct elf_link_hash_entry *h)
1538{
1539 struct csky_elf_link_hash_entry *eh;
1540 struct csky_elf_link_hash_table *htab;
1541 asection *srel;
1542 asection *s;
1543 eh = (struct csky_elf_link_hash_entry *)h;
1544 if (eh == NULL)
1545 return FALSE;
1546
1547 htab = csky_elf_hash_table (info);
1548 if (htab == NULL)
1549 return FALSE;
1550
1551 /* Clear jsri2bsr_refcount, if creating shared library files. */
1552 if (bfd_link_pic (info) && eh->jsri2bsr_refcount > 0)
1553 eh->jsri2bsr_refcount = 0;
1554
1555 /* If there is a function, put it in the procedure linkage table. We
1556 will fill in the contents of the procedure linkage table later. */
1557 if (h->needs_plt)
1558 {
1559 /* Calls to STT_GNU_IFUNC symbols always use a PLT, even if the
1560 symbol binds locally. */
1561 if (h->plt.refcount <= 0
1562 || (h->type != STT_GNU_IFUNC
1563 && (SYMBOL_CALLS_LOCAL (info, h)
1564 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1565 && h->root.type == bfd_link_hash_undefweak))))
1566
1567 {
1568 /* This case can occur if we saw a PLT32 reloc in an input
1569 file, but the symbol was never referred to by a dynamic
1570 object, or if all references were garbage collected. In
1571 such a case, we don't actually need to build a procedure
1572 linkage table, and we can just do a PC32 reloc instead. */
1573 h->plt.offset = (bfd_vma) -1;
1574 h->needs_plt = 0;
1575 if (h->got.refcount == 0)
1576 h->got.refcount += 1;
1577 }
1578 else if (h->got.refcount != 0)
1579 {
1580 h->got.refcount -= eh->plt_refcount;
1581 eh->plt_refcount = 0;
1582 }
1583 return TRUE;
1584 }
1585 else
1586 /* It's possible that we incorrectly decided a .plt reloc was
1587 needed for an R_CKCORE_PC32 or similar reloc to a non-function
1588 sym in check_relocs. We can't decide accurately between function
1589 and non-function syms in check_relocs; objects loaded later in
1590 the link may change h->type. So fix it now. */
1591 h->plt.offset = (bfd_vma) -1;
1592
1593 /* If this is a weak symbol, and there is a real definition, the
1594 processor independent code will have arranged for us to see the
1595 real definition first, and we can just use the same value. */
1596 if (h->is_weakalias)
1597 {
1598 struct elf_link_hash_entry *def = weakdef (h);
1599 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1600 h->root.u.def.section = def->root.u.def.section;
1601 h->root.u.def.value = def->root.u.def.value;
1602 return TRUE;
1603 }
1604
1605 /* If there are no non-GOT references, we do not need a copy
1606 relocation. */
1607 if (!h->non_got_ref)
1608 return TRUE;
1609
1610 /* This is a reference to a symbol defined by a dynamic object which
1611 is not a function. */
1612
1613 /* If we are creating a shared library, we must presume that the
1614 only references to the symbol are via the global offset table.
1615 For such cases we need not do anything here; the relocations will
1616 be handled correctly by relocate_section. */
1617 if (bfd_link_pic (info) || htab->elf.is_relocatable_executable)
1618 return TRUE;
1619
1620 /* We must allocate the symbol in our .dynbss section, which will
1621 become part of the .bss section of the executable. There will be
1622 an entry for this symbol in the .dynsym section. The dynamic
1623 object will contain position independent code, so all references
1624 from the dynamic object to this symbol will go through the global
1625 offset table. The dynamic linker will use the .dynsym entry to
1626 determine the address it must put in the global offset table, so
1627 both the dynamic object and the regular object will refer to the
1628 same memory location for the variable. */
1629 /* We must generate a R_CKCORE_COPY reloc to tell the dynamic linker to
1630 copy the initial value out of the dynamic object and into the
1631 runtime process image. We need to remember the offset into the
1632 .rela.bss section we are going to use. */
1633 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1634 {
1635 s = htab->elf.sdynrelro;
1636 srel = htab->elf.sreldynrelro;
1637 }
1638 else
1639 {
1640 s = htab->elf.sdynbss;
1641 srel = htab->elf.srelbss;
1642 }
1643 if (info->nocopyreloc == 0
1644 && (h->root.u.def.section->flags & SEC_ALLOC) != 0
1645 && h->size != 0
1646 && srel != NULL
1647 && s != NULL)
1648 {
1649 srel->size += sizeof (Elf32_External_Rela);
1650 h->needs_copy = 1;
1651 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1652 }
1653
1654 h->non_got_ref = 0;
1655 return TRUE;
1656}
1657
1658/* Allocate space in .plt, .got and associated reloc sections for
1659 dynamic relocs. */
1660
1661static bfd_boolean
1662csky_allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
1663{
1664 struct bfd_link_info *info;
1665 struct csky_elf_link_hash_table *htab;
1666 struct csky_elf_link_hash_entry *eh;
1667 struct elf_dyn_relocs *p;
1668
1669 /* For indirect case, such as _ZdlPv to _ZdlPv@@GLIBCXX_3.4. */
1670 if (h->root.type == bfd_link_hash_indirect)
1671 return TRUE;
1672
1673 if (h->root.type == bfd_link_hash_warning)
1674 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1675
1676
1677 info = (struct bfd_link_info *) inf;
1678 htab = csky_elf_hash_table (info);
1679 if (htab == NULL)
1680 return FALSE;
1681 /*TODO: how to deal with weak symbol relocs. */
1682 if ((htab->elf.dynamic_sections_created || h->type == STT_GNU_IFUNC)
1683 && h->plt.refcount > 0)
1684 {
1685 /* Make sure this symbol is output as a dynamic symbol.
1686 Undefined weak syms won't yet be marked as dynamic. */
1687 if (h->dynindx == -1 && !h->forced_local
1688 && h->root.type == bfd_link_hash_undefweak
1689 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1690 return FALSE;
1691 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1692 {
1693 asection *splt = htab->elf.splt;
1694
1695 /* If this is the first .plt entry, make room for the special
1696 first entry. */
1697 if (splt->size == 0)
1698 {
1699 if (bfd_csky_abi (info->output_bfd) == CSKY_ABI_V1)
1700 splt->size += PLT_ENTRY_SIZE_P;
1701 else
1702 splt->size += PLT_ENTRY_SIZE;
1703 }
1704 h->plt.offset = splt->size;
1705
1706 /* If this symbol is not defined in a regular file, and we are
1707 not generating a shared library, then set the symbol to this
1708 location in the .plt. This is required to make function
1709 pointers compare as equal between the normal executable and
1710 the shared library. */
1711 if (!bfd_link_pic (info) && !h->def_regular)
1712 {
1713 h->root.u.def.section = splt;
1714 h->root.u.def.value = h->plt.offset;
1715 }
1716
1717 /* Make room for this entry. */
1718 if (bfd_csky_abi (info->output_bfd) == CSKY_ABI_V1)
1719 splt->size += PLT_ENTRY_SIZE_P;
1720 else
1721 splt->size += PLT_ENTRY_SIZE;
1722 /* We also need to make an entry in the .rela.plt section. */
1723 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
1724
1725 /* We also need to make an entry in the .got.plt section, which
1726 will be placed in the .got section by the linker script. */
1727 htab->elf.sgotplt->size += 4;
1728 }
1729 else
1730 {
1731 h->plt.offset = (bfd_vma) -1;
1732 h->needs_plt = 0;
1733 }
1734 }
1735 else
1736 {
1737 h->plt.offset = (bfd_vma) -1;
1738 h->needs_plt = 0;
1739 }
1740
1741 if (h->got.refcount > 0)
1742 {
1743 asection *sgot;
1744 bfd_boolean dyn;
1745 int indx;
1746
1747 int tls_type = csky_elf_hash_entry (h)->tls_type;
1748 /* Make sure this symbol is output as a dynamic symbol.
1749 Undefined weak syms won't yet be marked as dynamic. */
1750 if (h->dynindx == -1 && !h->forced_local
1751 && h->root.type == bfd_link_hash_undefweak
1752 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1753 return FALSE;
1754
1755 sgot = htab->elf.sgot;
1756 h->got.offset = sgot->size;
1757 BFD_ASSERT (tls_type != GOT_UNKNOWN);
1758 if (tls_type == GOT_NORMAL)
1759 /* Non-TLS symbols need one GOT slot. */
1760 sgot->size += 4;
1761 else
1762 {
1763 if (tls_type & GOT_TLS_GD)
1764 /* R_CKCORE_TLS_GD32 needs 2 consecutive GOT slots. */
1765 sgot->size += 8;
1766 if (tls_type & GOT_TLS_IE)
1767 /* R_CKCORE_TLS_IE32 needs one GOT slot. */
1768 sgot->size += 4;
1769 }
1770 dyn = htab->elf.dynamic_sections_created;
1771 indx = 0;
1772 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
1773 && (! bfd_link_pic (info) || !SYMBOL_REFERENCES_LOCAL (info, h)))
1774 indx = h->dynindx;
1775
1776 if (tls_type != GOT_NORMAL
1777 && (bfd_link_pic (info) || indx != 0)
1778 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1779 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
1780 || h->root.type != bfd_link_hash_undefweak))
1781 {
1782 if (tls_type & GOT_TLS_IE)
1783 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1784 if (tls_type & GOT_TLS_GD)
1785 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1786 if ((tls_type & GOT_TLS_GD) && indx != 0)
1787 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1788 }
1789 else if (((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1790 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
1791 || h->root.type != bfd_link_hash_undefweak)
1792 && (bfd_link_pic (info)
1793 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)
1794 || h->plt.offset == (bfd_vma) -1))
1795 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
1796 }
1797 else
1798 h->got.offset = (bfd_vma) -1;
1799
1800 eh = (struct csky_elf_link_hash_entry *) h;
190eb1dd 1801 if (h->dyn_relocs == NULL)
b8891f8d
AJ		 1802 return TRUE;
1803
1804 /* In the shared -Bsymbolic case, discard space allocated for
1805 dynamic pc-relative relocs against symbols which turn out to be
1806 defined in regular objects. For the normal shared case, discard
1807 space for pc-relative relocs that have become local due to symbol
1808 visibility changes. */
1809
1810 if (bfd_link_pic (info))
1811 {
1812 if (SYMBOL_CALLS_LOCAL (info, h))
1813 {
1814 struct elf_dyn_relocs **pp;
1815
190eb1dd 1816 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
b8891f8d
AJ		 1817 {
1818 p->count -= p->pc_count;
1819 p->pc_count = 0;
1820 if (p->count == 0)
1821 *pp = p->next;
1822 else
1823 pp = &p->next;
1824 }
1825 }
1826
1827 if (eh->jsri2bsr_refcount
1828 && h->root.type == bfd_link_hash_defined
190eb1dd
L		 1829 && h->dyn_relocs != NULL)
1830 h->dyn_relocs->count -= eh->jsri2bsr_refcount;
b8891f8d
AJ		 1831
1832 /* Also discard relocs on undefined weak syms with non-default
1833 visibility. */
190eb1dd 1834 if (h->dyn_relocs != NULL
b8891f8d
AJ		 1835 && h->root.type == bfd_link_hash_undefweak)
1836 {
1837 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1838 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
190eb1dd 1839 h->dyn_relocs = NULL;
b8891f8d
AJ		 1840
1841 /* Make sure undefined weak symbols are output as a dynamic
1842 symbol in PIEs. */
1843 else if (h->dynindx == -1
1844 && !h->forced_local
1845 && !bfd_elf_link_record_dynamic_symbol (info, h))
1846 return FALSE;
1847 }
1848
1849 }
1850 else
1851 {
1852 /* For the non-shared case, discard space for relocs against
1853 symbols which turn out to need copy relocs or are not
1854 dynamic. */
1855
1856 if (!h->non_got_ref
1857 && ((h->def_dynamic && !h->def_regular)
1858 || (htab->elf.dynamic_sections_created
1859 && (h->root.type == bfd_link_hash_undefweak
1860 || h->root.type == bfd_link_hash_indirect
1861 || h->root.type == bfd_link_hash_undefined))))
1862 {
1863 /* Make sure this symbol is output as a dynamic symbol.
1864 Undefined weak syms won't yet be marked as dynamic. */
1865 if (h->dynindx == -1 && !h->forced_local
1866 && h->root.type == bfd_link_hash_undefweak)
1867 {
1868 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1869 return FALSE;
1870 }
1871
1872 /* If that succeeded, we know we'll be keeping all the
1873 relocs. */
1874 if (h->dynindx != -1)
1875 goto keep;
1876 }
1877
190eb1dd 1878 h->dyn_relocs = NULL;
b8891f8d
AJ		 1879
1880 keep: ;
1881 }
1882
1883 /* Finally, allocate space. */
190eb1dd 1884 for (p = h->dyn_relocs; p != NULL; p = p->next)
b8891f8d
AJ		 1885 {
1886 asection *srelgot = htab->elf.srelgot;
1887 srelgot->size += p->count * sizeof (Elf32_External_Rela);
1888 }
1889
1890 return TRUE;
1891}
1892
b8891f8d
AJ		 1893/* Set the sizes of the dynamic sections. */
1894
1895static bfd_boolean
1896csky_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1897 struct bfd_link_info *info)
1898{
1899 struct csky_elf_link_hash_table *htab;
1900 bfd *dynobj;
1901 asection *s;
1902 bfd_boolean relocs;
1903 bfd *ibfd;
1904
1905 htab = csky_elf_hash_table (info);
1906 if (htab == NULL)
1907 return FALSE;
1908 dynobj = htab->elf.dynobj;
1909 if (dynobj == NULL)
1910 return FALSE;
1911
1912 if (htab->elf.dynamic_sections_created)
1913 {
1914 /* Set the contents of the .interp section to the interpreter. */
1915 if (!bfd_link_pic (info) && !info->nointerp)
1916 {
1917 s = bfd_get_section_by_name (dynobj, ".interp");
1918 BFD_ASSERT (s != NULL);
1919 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1920 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1921 }
1922 }
1923
1924 /* Set up .got offsets for local syms, and space for local dynamic
1925 relocs. */
1926 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1927 {
1928 bfd_signed_vma *local_got_refcounts;
1929 bfd_signed_vma *end_local_got;
1930 bfd_size_type locsymcount;
1931 Elf_Internal_Shdr *symtab_hdr;
1932 asection *srelgot, *sgot;
1933 char *local_tls_type;
1934
1935 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
1936 continue;
1937
1938 sgot = htab->elf.sgot;
1939 srelgot = htab->elf.srelgot;
1940
1941 for (s = ibfd->sections; s != NULL; s = s->next)
1942 {
1943 struct elf_dyn_relocs *p;
1944
1945 for (p = *((struct elf_dyn_relocs **)
1946 &elf_section_data (s)->local_dynrel);
1947 p != NULL;
1948 p = p->next)
1949 {
1950 if (!bfd_is_abs_section (p->sec)
1951 && bfd_is_abs_section (p->sec->output_section))
1952 /* Input section has been discarded, either because
1953 it is a copy of a linkonce section or due to
1954 linker script /DISCARD/, so we'll be discarding
1955 the relocs too. */
1956 ;
1957 else if (p->count != 0)
1958 {
1959 srelgot->size += p->count * sizeof (Elf32_External_Rela);
1960 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1961 info->flags |= DF_TEXTREL;
1962 }
1963 }
1964 }
1965
1966 local_got_refcounts = elf_local_got_refcounts (ibfd);
1967 if (!local_got_refcounts)
1968 continue;
1969
1970 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
1971 locsymcount = symtab_hdr->sh_info;
1972 end_local_got = local_got_refcounts + locsymcount;
1973 local_tls_type = csky_elf_local_got_tls_type (ibfd);
1974
1975 for (; local_got_refcounts < end_local_got;
1976 ++local_got_refcounts, ++local_tls_type)
1977 {
1978 if (*local_got_refcounts > 0)
1979 {
1980 /* GOT_TLS_GD and GOT_TLS_IE type for TLS, GOT_NORMAL type
1981 for GOT. If output file is shared library, we should output
1982 GOT_TLS_GD type relocation in .rel.got. */
1983 *local_got_refcounts = sgot->size;
1984 if (*local_tls_type & GOT_TLS_GD)
1985 /* TLS_GD relocs need an 8-byte structure in the GOT. */
1986 sgot->size += 8;
1987 if (*local_tls_type & GOT_TLS_IE)
1988 sgot->size += 4;
1989 if (*local_tls_type == GOT_NORMAL)
1990 sgot->size += 4;
1991 if (bfd_link_pic (info) || *local_tls_type == GOT_TLS_GD)
1992 srelgot->size += sizeof (Elf32_External_Rela);
1993 }
1994 else
1995 *local_got_refcounts = (bfd_vma) -1;
1996 }
1997 }
1998
1999 if (htab->tls_ldm_got.refcount > 0)
2000 {
2001 /* Allocate two GOT entries and one dynamic relocation (if necessary)
2002 for R_CSKY_TLS_LDM32 relocations. */
2003 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2004 htab->elf.sgot->size += 8;
2005 if (bfd_link_pic (info))
2006 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
2007 }
2008 else
2009 htab->tls_ldm_got.offset = -1;
2010
2011 /* Allocate global sym .plt and .got entries, and space for global
2012 sym dynamic relocs. */
2013 elf_link_hash_traverse (&htab->elf, csky_allocate_dynrelocs, (PTR) info);
2014
2015 /* Check for GOT overflow. */
2016 if (check_got_overflow == 1
2017 && htab->elf.sgot->size + htab->elf.sgotplt->size > GOT_MAX_SIZE)
2018 {
2019 _bfd_error_handler (_("GOT table size out of range")); /* */
2020 return FALSE;
2021 }
2022
2023 /* We now have determined the sizes of the various dynamic sections.
2024 Allocate memory for them. */
2025 relocs = FALSE;
2026 for (s = dynobj->sections; s != NULL; s = s->next)
2027 {
2028 bfd_boolean strip_section = TRUE;
2029
2030 if ((s->flags & SEC_LINKER_CREATED) == 0)
2031 continue;
2032
2033 if (s == htab->elf.splt
2034 || s == htab->elf.sgot
2035 || s == htab->elf.sgotplt
2036 || s == htab->elf.sdynrelro
2037 || s == htab->elf.sreldynrelro)
2038 {
2039 /* Strip this section if we don't need it;
2040 see the comment below. */
2041 /* We'd like to strip these sections if they aren't needed, but if
2042 we've exported dynamic symbols from them we must leave them.
2043 It's too late to tell BFD to get rid of the symbols. */
2044
2045 if (htab->elf.hplt != NULL)
2046 strip_section = FALSE;
2047 }
fd361982 2048 else if (CONST_STRNEQ (bfd_section_name (s), ".rel") )
b8891f8d
AJ		 2049 {
2050 if (s->size != 0 )
2051 relocs = TRUE;
2052
2053 /* We use the reloc_count field as a counter if we need
2054 to copy relocs into the output file. */
2055 s->reloc_count = 0;
2056 }
2057 else
2058 /* It's not one of our sections, so don't allocate space. */
2059 continue;
2060
2061 /* Strip this section if we don't need it; see the
2062 comment below. */
2063 if (s->size == 0)
2064 {
2065 /* If we don't need this section, strip it from the
2066 output file. This is mostly to handle .rel.bss and
2067 .rel.plt. We must create both sections in
2068 create_dynamic_sections, because they must be created
2069 before the linker maps input sections to output
2070 sections. The linker does that before
2071 adjust_dynamic_symbol is called, and it is that
2072 function which decides whether anything needs to go
2073 into these sections. */
2074 if (strip_section)
2075 s->flags |= SEC_EXCLUDE;
2076 continue;
2077 }
2078
2079 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2080 continue;
2081
2082 /* Allocate memory for the section contents. We use bfd_zalloc
2083 here in case unused entries are not reclaimed before the
2084 section's contents are written out. This should not happen,
2085 but this way if it does, we get a R_CKCORE_NONE reloc instead
2086 of garbage. */
2087 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2088 if (s->contents == NULL)
2089 return FALSE;
2090 }
2091
2092 if (htab->elf.dynamic_sections_created)
2c8e3708
L		 2093 htab->elf.dt_pltgot_required = htab->elf.sgot->size != 0;
2094 return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
b8891f8d
AJ		 2095}
2096
2097/* Finish up dynamic symbol handling. We set the contents of various
2098 dynamic sections here. */
2099
2100static bfd_boolean
2101csky_elf_finish_dynamic_symbol (bfd *output_bfd,
2102 struct bfd_link_info *info,
2103 struct elf_link_hash_entry *h,
2104 Elf_Internal_Sym *sym)
2105{
2106 struct csky_elf_link_hash_table *htab;
2107
2108 htab = csky_elf_hash_table (info);
2109 if (htab == NULL)
2110 return FALSE;
2111
2112 /* Sanity check to make sure no unexpected symbol reaches here.
2113 This matches the test in csky_elf_relocate_section handling
2114 of GOT/PLT entries. */
2115 BFD_ASSERT (! (h->dynindx == -1
2116 && !h->forced_local
2117 && h->root.type != bfd_link_hash_undefweak
2118 && bfd_link_pic (info)));
2119
2120 if (h->plt.offset != (bfd_vma) -1)
2121 {
2122 bfd_vma plt_index;
2123 bfd_vma got_offset;
2124 Elf_Internal_Rela rel;
2125 bfd_byte *loc;
2126 asection *plt, *relplt, *gotplt;
2127
2128 plt = htab->elf.splt;
2129 relplt = htab->elf.srelplt;
2130 gotplt = htab->elf.sgotplt;
2131
2132 /* This symbol has an entry in the procedure linkage table. Set
2133 it up. */
2134 BFD_ASSERT (h->dynindx != -1
2135 || ((h->forced_local || bfd_link_executable (info))
2136 && h->def_regular));
2137 BFD_ASSERT (plt != NULL && gotplt != NULL && relplt != NULL);
2138 if (bfd_csky_abi (output_bfd) == CSKY_ABI_V2)
2139 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
2140 else
2141 plt_index = h->plt.offset / PLT_ENTRY_SIZE_P - 1;
2142 got_offset = (plt_index + 3) * 4;
2143
2144 /* Fill in the entry in the procedure linkage table. */
2145 if (bfd_csky_abi (output_bfd) == CSKY_ABI_V2)
2146 {
2147 csky_put_insn_32 (output_bfd, csky_elf_plt_entry_v2[0],
2148 plt->contents + h->plt.offset);
2149 csky_put_insn_32 (output_bfd,
2150 (csky_elf_plt_entry_v2[1] | plt_index),
2151 plt->contents + h->plt.offset + 4);
2152 csky_put_insn_32 (output_bfd, csky_elf_plt_entry_v2[2],
2153 plt->contents + h->plt.offset + 8);
2154 }
2155 else
2156 {
2157 int i;
2158 for (i = 0; i < 6; i++)
2159 bfd_put_16 (output_bfd, csky_elf_plt_entry_v1[i],
2160 plt->contents + h->plt.offset + i * 2);
2161 bfd_put_32 (output_bfd, plt_index,
2162 plt->contents + h->plt.offset + i * 2);
2163 }
2164
2165 /* Fill in the entry in the .rel.plt section. */
2166 rel.r_offset = (htab->elf.sgotplt->output_section->vma
2167 + htab->elf.sgotplt->output_offset
2168 + got_offset);
2169 rel.r_info = ELF32_R_INFO (h->dynindx, R_CKCORE_JUMP_SLOT);
2170 rel.r_addend = (plt->output_section->vma
2171 + plt->output_offset
2172 + h->plt.offset);
2173 loc = (htab->elf.srelplt->contents
2174 + plt_index * sizeof (Elf32_External_Rela));
2175
2176 if (loc != NULL)
2177 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
2178 if (! h->def_regular)
2179 {
2180 /* Mark the symbol as undefined, rather than as defined in
2181 the .plt section. Leave the value alone. */
2182 sym->st_shndx = SHN_UNDEF;
2183 /* If the symbol is weak, we do need to clear the value.
2184 Otherwise, the PLT entry would provide a definition for
2185 the symbol even if the symbol wasn't defined anywhere,
2186 and so the symbol would never be NULL. Leave the value if
2187 there were any relocations where pointer equality matters
2188 (this is a clue for the dynamic linker, to make function
2189 pointer comparisons work between an application and shared
2190 library). */
2191 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
2192 sym->st_value = 0;
2193 }
2194 }
2195
2196 /* Fill in the entry in the .got section. */
2197 if (h->got.offset != (bfd_vma) -1
2198 && ((csky_elf_hash_entry (h)->tls_type & GOT_TLS_GD) == 0)
2199 && ((csky_elf_hash_entry (h)->tls_type & GOT_TLS_IE) == 0))
2200 {
2201 Elf_Internal_Rela rel;
2202 bfd_byte *loc;
2203
2204 /* This symbol has an entry in the global offset table.
2205 Set it up. */
2206 BFD_ASSERT (htab->elf.sgot != NULL && htab->elf.srelgot != NULL);
2207
2208 rel.r_offset = (htab->elf.sgot->output_section->vma
2209 + htab->elf.sgot->output_offset
2210 + (h->got.offset & ~(bfd_vma) 1));
2211
2212 /* If this is a static link, or it is a -Bsymbolic link and the
2213 symbol is defined locally or was forced to be local because
2214 of a version file, we just want to emit a RELATIVE reloc.
2215 The entry in the global offset table will already have been
2216 initialized in the relocate_section function. */
2217 if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
2218 {
2219 BFD_ASSERT ((h->got.offset & 1) != 0);
2220 rel.r_info = ELF32_R_INFO (0, R_CKCORE_RELATIVE);
2221 rel.r_addend = (h->root.u.def.value
2222 + h->root.u.def.section->output_offset
2223 + h->root.u.def.section->output_section->vma);
2224 }
2225 else
2226 {
2227 BFD_ASSERT ((h->got.offset & 1) == 0);
2228 bfd_put_32 (output_bfd, (bfd_vma) 0,
2229 htab->elf.sgot->contents + h->got.offset);
2230 rel.r_info = ELF32_R_INFO (h->dynindx, R_CKCORE_GLOB_DAT);
2231 rel.r_addend = 0;
2232 }
2233
2234 loc = htab->elf.srelgot->contents;
2235 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
2236
2237 if (loc != NULL)
2238 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
2239 }
2240
2241 if (h->needs_copy)
2242 {
2243 asection *s;
2244 Elf_Internal_Rela rela;
2245 bfd_byte *loc;
2246
2247 /* This symbol needs a copy reloc. Set it up. */
2248 BFD_ASSERT (h->dynindx != -1
2249 && (h->root.type == bfd_link_hash_defined
2250 || h->root.type == bfd_link_hash_defweak));
2251
2252 rela.r_offset = (h->root.u.def.value
2253 + h->root.u.def.section->output_section->vma
2254 + h->root.u.def.section->output_offset);
2255 rela.r_info = ELF32_R_INFO (h->dynindx, R_CKCORE_COPY);
2256 rela.r_addend = 0;
2257 if (h->root.u.def.section == htab->elf.sdynrelro)
2258 s = htab->elf.sreldynrelro;
2259 else
2260 s = htab->elf.srelbss;
2261 BFD_ASSERT (s != NULL);
2262 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2263 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2264 }
2265
2266 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2267 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2268 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2269 sym->st_shndx = SHN_ABS;
2270
2271 return TRUE;
2272}
2273
2274/* Finish up the dynamic sections. */
2275
2276static bfd_boolean
2277csky_elf_finish_dynamic_sections (bfd *output_bfd,
2278 struct bfd_link_info *info)
2279{
2280 struct csky_elf_link_hash_table *htab;
2281 bfd *dynobj;
2282 asection *sdyn;
2283 asection *got_sec;
2284
2285 htab = csky_elf_hash_table (info);
2286 if (htab == NULL)
2287 return FALSE;
2288
2289 dynobj = htab->elf.dynobj;
2290 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2291
2292 if (htab->elf.dynamic_sections_created)
2293 {
2294 Elf32_External_Dyn *dyncon, *dynconend;
2295
2296 BFD_ASSERT (sdyn != NULL && htab->elf.sgot != NULL);
2297
2298 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2299 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2300 for (; dyncon < dynconend; dyncon++)
2301 {
2302 Elf_Internal_Dyn dyn;
2303 bfd_boolean size = FALSE;
2304 const char *name = NULL;
2305
2306 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2307 switch (dyn.d_tag)
2308 {
2309 default:
2310 continue;
2311 case DT_RELA:
2312 name = ".rela.dyn";
2313 size = FALSE;
2314 break;
2315 case DT_RELASZ:
2316 name = ".rela.dyn";
2317 size = TRUE;
2318 break;
2319 case DT_PLTRELSZ:
2320 name = ".rela.plt";
2321 size = TRUE;
2322 break;
2323 case DT_PLTGOT:
2324 dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
2325 break;
2326 case DT_JMPREL:
2327 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma
2328 + htab->elf.srelplt->output_offset;
2329 break;
2330 }
2331
2332 if (name != NULL)
2333 {
2334 asection *s = bfd_get_section_by_name (output_bfd, name);
2335
2336 if (s == NULL)
2337 dyn.d_un.d_val = 0;
2338 else if (!size)
2339 dyn.d_un.d_ptr = s->vma;
2340 else
2341 dyn.d_un.d_val = s->size;
2342 }
2343 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2344 }
2345 }
2346
2347 /* Fill in the first three entries in the global offset table. */
2348 if (htab->elf.sgotplt)
2349 got_sec = htab->elf.sgotplt;
2350 else
2351 got_sec = htab->elf.sgot;
2352 if (got_sec != NULL)
2353 {
2354 if (got_sec->size > 0)
2355 {
2356 bfd_put_32 (output_bfd,
2357 (sdyn == NULL ? (bfd_vma) 0
2358 : sdyn->output_section->vma + sdyn->output_offset),
2359 got_sec->contents);
2360 bfd_put_32 (output_bfd, (bfd_vma) 0, got_sec->contents + 4);
2361 bfd_put_32 (output_bfd, (bfd_vma) 0, got_sec->contents + 8);
2362 }
2363 elf_section_data (got_sec->output_section)->this_hdr.sh_entsize = 4;
2364 }
2365 return TRUE;
2366}
2367
2368/* Copy the extra info we tack onto an elf_link_hash_entry. */
2369
2370static void
2371csky_elf_copy_indirect_symbol (struct bfd_link_info *info,
2372 struct elf_link_hash_entry *dir,
2373 struct elf_link_hash_entry *ind)
2374{
2375 struct csky_elf_link_hash_entry *edir, *eind;
2376
2377 edir = (struct csky_elf_link_hash_entry *) dir;
2378 eind = (struct csky_elf_link_hash_entry *) ind;
2379
b8891f8d
AJ		 2380 if (ind->root.type == bfd_link_hash_indirect
2381 && dir->got.refcount <= 0)
2382 {
2383 edir->tls_type = eind->tls_type;
2384 eind->tls_type = GOT_UNKNOWN;
2385 }
2386 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2387}
2388
2389/* Used to decide how to sort relocs in an optimal manner for the
2390 dynamic linker, before writing them out. */
2391
2392static enum elf_reloc_type_class
2393csky_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
2394 const asection *rel_sec ATTRIBUTE_UNUSED,
2395 const Elf_Internal_Rela *rela)
2396{
2397 switch ((int) ELF32_R_TYPE (rela->r_info))
2398 {
2399 case R_CKCORE_RELATIVE:
2400 return reloc_class_relative;
2401 case R_CKCORE_JUMP_SLOT:
2402 return reloc_class_plt;
2403 case R_CKCORE_COPY:
2404 return reloc_class_copy;
2405 case R_CKCORE_IRELATIVE:
2406 return reloc_class_ifunc;
2407 default:
2408 return reloc_class_normal;
2409 }
2410}
2411
2412/* Return the section that should be marked against GC for a given
2413 relocation. */
2414
2415static asection *
2416csky_elf_gc_mark_hook (asection *sec,
2417 struct bfd_link_info *info,
2418 Elf_Internal_Rela *rel,
2419 struct elf_link_hash_entry *h,
2420 Elf_Internal_Sym *sym)
2421{
2422 if (h != NULL)
2423 {
2424 switch (ELF32_R_TYPE (rel->r_info))
2425 {
2426 case R_CKCORE_GNU_VTINHERIT:
2427 case R_CKCORE_GNU_VTENTRY:
2428 return NULL;
2429 }
2430 }
2431
2432 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2433}
2434
2435/* Look through the relocs for a section during the first phase.
2436 Since we don't do .gots or .plts, we just need to consider the
2437 virtual table relocs for gc. */
2438
2439static bfd_boolean
2440csky_elf_check_relocs (bfd * abfd,
2441 struct bfd_link_info * info,
2442 asection * sec,
2443 const Elf_Internal_Rela * relocs)
2444{
2445 Elf_Internal_Shdr * symtab_hdr;
2446 struct elf_link_hash_entry ** sym_hashes;
2447 const Elf_Internal_Rela * rel;
2448 const Elf_Internal_Rela * rel_end;
2449 struct csky_elf_link_hash_table *htab;
2450 asection *sreloc;
2451
2452 /* if output type is relocatable, return. */
2453 if (bfd_link_relocatable (info))
2454 return TRUE;
2455
2456 htab = csky_elf_hash_table (info);
2457 if (htab == NULL)
2458 return FALSE;
2459
2460 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2461 sym_hashes = elf_sym_hashes (abfd);
2462
2463 rel_end = relocs + sec->reloc_count;
2464 sreloc = NULL;
2465 for (rel = relocs; rel < rel_end; rel++)
2466 {
2467 struct elf_link_hash_entry *h;
2468 unsigned long r_symndx;
2469 Elf_Internal_Sym *isym;
2470 int r_type;
2471
2472 r_symndx = ELF32_R_SYM (rel->r_info);
2473 r_type = ELF32_R_TYPE (rel->r_info);
2474 if (r_symndx < symtab_hdr->sh_info)
2475 {
2476 /* A local symbol. */
f1dfbfdb 2477 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
b8891f8d
AJ		 2478 abfd, r_symndx);
2479 if (isym == NULL)
2480 return FALSE;
2481 h = NULL;
2482 }
2483 else
2484 {
2485 isym = NULL;
2486 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2487 while (h->root.type == bfd_link_hash_indirect
2488 || h->root.type == bfd_link_hash_warning)
2489 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2490 }
2491
2492 switch (r_type)
2493 {
2494 case R_CKCORE_PCREL_IMM26BY2:
2495 case R_CKCORE_PCREL_IMM11BY2:
2496 case R_CKCORE_PCREL_JSR_IMM11BY2:
2497 case R_CKCORE_PCREL_JSR_IMM26BY2:
2498 /* If the symbol is '*UND*', means this reloc is used for
2499 * callgraph, don't need to leave to shared object. */
2500 if (r_symndx == 0)
2501 break;
2502 /* Else fall through. */
2503 case R_CKCORE_ADDR32:
2504 case R_CKCORE_ADDR_HI16:
2505 case R_CKCORE_ADDR_LO16:
2506 if (h != NULL
2507 && bfd_link_executable (info)
2508 && r_type == R_CKCORE_ADDR32
2509 && h->type == STT_OBJECT
2510 && (sec->flags & SEC_ALLOC) != 0
2511 && (sec->flags & SEC_READONLY))
2512 /* If this reloc is in a read-only section, we might
2513 need a copy reloc. We can't check reliably at this
2514 stage whether the section is read-only, as input
2515 sections have not yet been mapped to output sections.
2516 Tentatively set the flag for now, and correct in
2517 adjust_dynamic_symbol. */
2518 h->non_got_ref = 1;
2519
2520 /* If we are creating a shared library or relocatable executable,
2521 and this is a reloc against a global symbol, then we need to
2522 copy the reloc into the shared library. However, if we are
2523 linking with -Bsymbolic, we do not need to copy a reloc
2524 against a global symbol which is defined in an object we are
2525 including in the link (i.e., DEF_REGULAR is set). At
2526 this point we have not seen all the input files, so it is
2527 possible that DEF_REGULAR is not set now but will be set
2528 later (it is never cleared). We account for that possibility
2529 below by storing information in the relocs_copied field of
2530 the hash table entry. */
2531 if ((bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
2532 || (!bfd_link_pic (info)
2533 && (sec->flags & SEC_ALLOC) != 0
2534 && h != NULL
2535 && (h->root.type == bfd_link_hash_defweak
2536 || !h->def_regular)))
2537 {
2538 struct elf_dyn_relocs *p;
2539 struct elf_dyn_relocs **head;
2540 /* We must copy these reloc types into the output file.
2541 Create a reloc section in dynobj and make room for
2542 this reloc. */
2543 if (sreloc == NULL)
2544 {
2545 if (htab->elf.dynobj == NULL)
2546 htab->elf.dynobj = abfd;
2547
2548 sreloc = _bfd_elf_make_dynamic_reloc_section
2549 (sec, htab->elf.dynobj, 2, abfd, TRUE);
2550
2551 if (sreloc == NULL)
2552 return FALSE;
2553 }
2554
2555 if (h == NULL && !use_branch_stub
2556 && ((ELF32_R_TYPE (rel->r_info)
2557 == R_CKCORE_PCREL_IMM26BY2)
2558 || (ELF32_R_TYPE (rel->r_info)
2559 == R_CKCORE_PCREL_IMM11BY2)))
2560 break;
2561
2562 /* If this is a global symbol, we count the number of
2563 relocations we need for this symbol. */
2564 if (h != NULL)
2565 {
2566 struct csky_elf_link_hash_entry *eh;
2567 eh = (struct csky_elf_link_hash_entry *)h;
2568 if ((ELF32_R_TYPE (rel->r_info)
2569 == R_CKCORE_PCREL_JSR_IMM26BY2)
2570 || (ELF32_R_TYPE (rel->r_info)
2571 == R_CKCORE_PCREL_JSR_IMM11BY2))
2572 eh->jsri2bsr_refcount += 1;
190eb1dd 2573 head = &h->dyn_relocs;
b8891f8d
AJ		 2574 }
2575 else
2576 {
2577 /* Track dynamic relocs needed for local syms too.
2578 We really need local syms available to do this
2579 easily. Oh well. */
2580 void **vpp;
2581 asection *s;
2582 Elf_Internal_Sym *loc_isym;
2583
f1dfbfdb 2584 loc_isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
b8891f8d
AJ		 2585 abfd, r_symndx);
2586 if (loc_isym == NULL)
2587 return FALSE;
2588 s = bfd_section_from_elf_index (abfd, loc_isym->st_shndx);
2589 if (s == NULL)
2590 s = sec;
2591 vpp = &elf_section_data (s)->local_dynrel;
2592 head = (struct elf_dyn_relocs **)vpp;
2593 }
2594
2595 p = *head;
2596 if (p == NULL || p->sec != sec)
2597 {
986f0783 2598 size_t amt = sizeof *p;
b8891f8d
AJ		 2599 p = ((struct elf_dyn_relocs *)
2600 bfd_alloc (htab->elf.dynobj, amt));
2601 if (p == NULL)
2602 return FALSE;
2603 p->next = *head;
2604 *head = p;
2605 p->sec = sec;
2606 p->count = 0;
2607 p->pc_count = 0;
2608 }
2609
2610 if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_PCREL_IMM26BY2
2611 || ELF32_R_TYPE (rel->r_info) == R_CKCORE_PCREL_IMM11BY2)
2612 p->pc_count += 1;
2613 p->count += 1;
2614 }
2615 break;
2616
2617 case R_CKCORE_PLT_IMM18BY4:
2618 case R_CKCORE_PLT32:
2619 /* This symbol requires a procedure linkage table entry. We
2620 actually build the entry in adjust_dynamic_symbol,
2621 because this might be a case of linking PIC code which is
2622 never referenced by a dynamic object, in which case we
2623 don't need to generate a procedure linkage table entry
2624 after all. */
2625
2626 /* If this is a local symbol, we resolve it directly without
2627 creating a procedure linkage table entry. */
2628 if (h == NULL)
2629 continue;
2630 if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_PLT_IMM18BY4)
2631 check_got_overflow = 1;
2632
2633 h->needs_plt = 1;
2634 h->plt.refcount += 1;
2635 h->got.refcount += 1;
2636 ((struct csky_elf_link_hash_entry *)h)->plt_refcount += 1;
2637 break;
2638
2639 case R_CKCORE_GOT12:
2640 case R_CKCORE_PLT12:
2641 case R_CKCORE_GOT32:
2642 case R_CKCORE_GOT_HI16:
2643 case R_CKCORE_GOT_LO16:
2644 case R_CKCORE_PLT_HI16:
2645 case R_CKCORE_PLT_LO16:
2646 case R_CKCORE_GOT_IMM18BY4:
2647 case R_CKCORE_TLS_IE32:
2648 case R_CKCORE_TLS_GD32:
2649 {
2650 int tls_type, old_tls_type;
2651
2652 if (h != NULL
2653 && bfd_link_executable (info)
2654 && r_type == R_CKCORE_GOT_IMM18BY4
2655 && (sec->flags & SEC_ALLOC) != 0
2656 && (sec->flags & SEC_READONLY))
2657 /* If this reloc is in a read-only section, we might
2658 need a copy reloc. We can't check reliably at this
2659 stage whether the section is read-only, as input
2660 sections have not yet been mapped to output sections.
2661 Tentatively set the flag for now, and correct in
2662 adjust_dynamic_symbol. */
2663 h->non_got_ref = 1;
2664
2665 switch (ELF32_R_TYPE (rel->r_info))
2666 {
2667 case R_CKCORE_TLS_IE32:
2668 tls_type = GOT_TLS_IE;
2669 break;
2670 case R_CKCORE_TLS_GD32:
2671 tls_type = GOT_TLS_GD;
2672 break;
2673 default:
2674 tls_type = GOT_NORMAL;
2675 break;
2676 }
2677 if (h != NULL)
2678 {
2679 if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_GOT_IMM18BY4)
2680 check_got_overflow = 1;
2681 h->got.refcount += 1;
2682 old_tls_type = csky_elf_hash_entry (h)->tls_type;
2683 }
2684 else
2685 {
2686 bfd_signed_vma *local_got_refcounts;
2687
2688 /* This is a global offset table entry for a local symbol. */
2689 /* we can write a new function named
2690 elf32_csky_allocate_local_sym_info() to replace
2691 following code. */
2692 local_got_refcounts = elf_local_got_refcounts (abfd);
2693 if (local_got_refcounts == NULL)
2694 {
2695 bfd_size_type size;
2696
2697 size = symtab_hdr->sh_info;
2698 size *= (sizeof (bfd_signed_vma) + sizeof (char));
2699 local_got_refcounts = ((bfd_signed_vma *)
2700 bfd_zalloc (abfd, size));
2701 if (local_got_refcounts == NULL)
2702 return FALSE;
2703 elf_local_got_refcounts (abfd) = local_got_refcounts;
2704 csky_elf_local_got_tls_type (abfd)
2705 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2706 }
2707 local_got_refcounts[r_symndx] += 1;
2708 old_tls_type = csky_elf_local_got_tls_type (abfd)[r_symndx];
2709 }
2710
2711 /* We will already have issued an error message if there is a
2712 TLS / non-TLS mismatch, based on the symbol type. We don't
2713 support any linker relaxations. So just combine any TLS
2714 types needed. */
2715 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
2716 && tls_type != GOT_NORMAL)
2717 tls_type |= old_tls_type;
2718
2719 if (old_tls_type != tls_type)
2720 {
2721 if (h != NULL)
2722 csky_elf_hash_entry (h)->tls_type = tls_type;
2723 else
2724 csky_elf_local_got_tls_type (abfd)[r_symndx] = tls_type;
2725 }
2726 }
2727 /* Fall through. */
2728
2729 case R_CKCORE_TLS_LDM32:
2730 if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_TLS_LDM32)
2731 htab->tls_ldm_got.refcount++;
2732 /* Fall through. */
2733
2734 case R_CKCORE_GOTOFF:
2735 case R_CKCORE_GOTPC:
2736 case R_CKCORE_GOTOFF_HI16:
2737 case R_CKCORE_GOTOFF_LO16:
2738 case R_CKCORE_GOTPC_HI16:
2739 case R_CKCORE_GOTPC_LO16:
2740 case R_CKCORE_GOTOFF_IMM18:
2741 if (htab->elf.sgot == NULL)
2742 {
2743 if (htab->elf.dynobj == NULL)
2744 htab->elf.dynobj = abfd;
2745 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
2746 return FALSE;
2747 }
2748 break;
2749
2750 /* This relocation describes the C++ object vtable hierarchy.
2751 Reconstruct it for later use during GC. */
2752 case R_CKCORE_GNU_VTINHERIT:
2753 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2754 return FALSE;
2755 break;
2756
2757 /* This relocation describes which C++ vtable entries are actually
2758 used. Record for later use during GC. */
2759 case R_CKCORE_GNU_VTENTRY:
a0ea3a14 2760 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b8891f8d
AJ		 2761 return FALSE;
2762 break;
2763 }
2764 }
2765
2766 return TRUE;
2767}
2768
2769static const struct bfd_elf_special_section csky_elf_special_sections[]=
2770{
2771 { STRING_COMMA_LEN (".ctors"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2772 { STRING_COMMA_LEN (".dtors"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2773 { NULL, 0, 0, 0, 0 }
2774};
2775
2776/* Function to keep CSKY specific flags in the ELF header. */
2777
2778static bfd_boolean
2779csky_elf_set_private_flags (bfd * abfd, flagword flags)
2780{
2781 BFD_ASSERT (! elf_flags_init (abfd)
2782 || elf_elfheader (abfd)->e_flags == flags);
2783
2784 elf_elfheader (abfd)->e_flags = flags;
2785 elf_flags_init (abfd) = TRUE;
2786 return TRUE;
2787}
2788
2789static csky_arch_for_merge *
2790csky_find_arch_with_eflag (const unsigned long arch_eflag)
2791{
2792 csky_arch_for_merge *csky_arch = NULL;
2793
2794 for (csky_arch = csky_archs; csky_arch->name != NULL; csky_arch++)
2795 if (csky_arch->arch_eflag == arch_eflag)
2796 break;
2797 if (csky_arch == NULL)
2798 {
2799 _bfd_error_handler (_("warning: unrecognized arch eflag '%#lx'"),
2800 arch_eflag);
2801 bfd_set_error (bfd_error_wrong_format);
2802 }
2803 return csky_arch;
2804}
2805
0861f561
CQ		 2806static csky_arch_for_merge *
2807csky_find_arch_with_name (const char *name)
2808{
2809 csky_arch_for_merge *csky_arch = NULL;
2810 const char *msg;
2811
2812 if (name == NULL)
2813 return NULL;
2814
2815 for (csky_arch = csky_archs; csky_arch->name != NULL; csky_arch++)
2816 {
2817 if (strncmp (csky_arch->name, name, strlen (csky_arch->name)) == 0)
2818 break;
2819 }
2820 if (csky_arch == NULL)
2821 {
2822 msg = _("warning: unrecognised arch name '%#x'");
2823 (*_bfd_error_handler) (msg, name);
2824 bfd_set_error (bfd_error_wrong_format);
2825 }
2826 return csky_arch;
2827}
2828
2829static bfd_boolean
2830elf32_csky_merge_attributes (bfd *ibfd, struct bfd_link_info *info)
2831{
2832 bfd *obfd = info->output_bfd;
2833 obj_attribute *in_attr;
2834 obj_attribute *out_attr;
2835 obj_attribute tattr;
2836 csky_arch_for_merge *old_arch = NULL;
2837 csky_arch_for_merge *new_arch = NULL;
2838 int i;
2839 bfd_boolean result = TRUE;
2840 const char *msg = NULL;
2841
2842 const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section;
2843
2844 /* Skip the linker stubs file. This preserves previous behavior
2845 of accepting unknown attributes in the first input file - but
2846 is that a bug? */
2847 if (ibfd->flags & BFD_LINKER_CREATED)
2848 return TRUE;
2849
2850 /* Skip any input that hasn't attribute section.
2851 This enables to link object files without attribute section with
2852 any others. */
2853 if (bfd_get_section_by_name (ibfd, sec_name) == NULL)
2854 {
2855 return TRUE;
2856 }
2857
2858 if (!elf_known_obj_attributes_proc (obfd)[0].i)
2859 {
2860 /* This is the first object. Copy the attributes. */
2861 out_attr = elf_known_obj_attributes_proc (obfd);
2862
2863 /* If Tag_CSKY_CPU_NAME is already set, save it. */
2864 memcpy (&tattr, &out_attr[Tag_CSKY_ARCH_NAME], sizeof (tattr));
2865
2866 _bfd_elf_copy_obj_attributes (ibfd, obfd);
2867
2868 out_attr = elf_known_obj_attributes_proc (obfd);
2869
2870 /* Restore Tag_CSKY_CPU_NAME. */
2871 memcpy (&out_attr[Tag_CSKY_ARCH_NAME], &tattr, sizeof (tattr));
2872
2873 /* Use the Tag_null value to indicate the attributes have been
2874 initialized. */
2875 out_attr[0].i = 1;
2876 }
2877
2878 in_attr = elf_known_obj_attributes_proc (ibfd);
2879 out_attr = elf_known_obj_attributes_proc (obfd);
2880
2881 for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
2882 {
2883 /* Merge this attribute with existing attributes. */
2884 switch (i)
2885 {
2886 case Tag_CSKY_CPU_NAME:
2887 case Tag_CSKY_ARCH_NAME:
2888 /* Do arch merge. */
2889 new_arch = csky_find_arch_with_name (in_attr[Tag_CSKY_ARCH_NAME].s);
2890 old_arch = csky_find_arch_with_name (out_attr[Tag_CSKY_ARCH_NAME].s);
2891
2892 if (new_arch != NULL && old_arch != NULL)
2893 {
2894 if (new_arch->class != old_arch->class)
2895 {
2896 msg = _("%pB: machine flag conflict with target");
2897 (*_bfd_error_handler) (msg, ibfd);
2898 bfd_set_error (bfd_error_wrong_format);
2899 return FALSE;
2900 }
2901 else if (new_arch->class_level != old_arch->class_level)
2902 {
2903 csky_arch_for_merge *newest_arch =
2904 ((new_arch->class_level > old_arch->class_level) ?
2905 new_arch : old_arch);
2906
2907 if (new_arch->do_warning || old_arch->do_warning)
2908 {
2909 msg = _("warning: file %pB's arch flag %s conflict "
2910 "with target %s,set target arch flag to %s");
2911 (*_bfd_error_handler) (msg, ibfd, new_arch->name,
2912 old_arch->name,
2913 (newest_arch->name));
2914 bfd_set_error (bfd_error_wrong_format);
2915 }
2916
2917 if (out_attr[Tag_CSKY_ARCH_NAME].s != NULL)
2918 bfd_release (obfd, out_attr[Tag_CSKY_ARCH_NAME].s);
2919
2920 out_attr[Tag_CSKY_ARCH_NAME].s =
2921 _bfd_elf_attr_strdup (obfd, newest_arch->name);
2922 }
2923 }
2924
2925 break;
2926
2927 case Tag_CSKY_ISA_FLAGS:
2928 case Tag_CSKY_ISA_EXT_FLAGS:
2929 /* Do ISA merge. */
2930 break;
2931
2932 case Tag_CSKY_VDSP_VERSION:
2933 if (out_attr[i].i == 0)
2934 out_attr[i].i = in_attr[i].i;
2935 else if (out_attr[i].i != in_attr[i].i)
2936 {
2937 _bfd_error_handler
2938 (_("Error: %pB and %pB has different VDSP version"), ibfd, obfd);
2939 result = FALSE;
2940 }
2941 break;
2942
2943 case Tag_CSKY_FPU_VERSION:
2944 if (out_attr[i].i <= in_attr[i].i
2945 && out_attr[i].i == 0)
2946 out_attr[i].i = in_attr[i].i;
2947 break;
2948
2949 case Tag_CSKY_DSP_VERSION:
2950 if (out_attr[i].i == 0)
2951 out_attr[i].i = in_attr[i].i;
2952 else if (out_attr[i].i != in_attr[i].i)
2953 {
2954 _bfd_error_handler
2955 (_("Error: %pB and %pB has different DSP version"), ibfd, obfd);
2956 result = FALSE;
2957 }
2958 break;
2959
2960 case Tag_CSKY_FPU_ABI:
2961 if (out_attr[i].i != in_attr[i].i
2962 && (out_attr[i].i == 0
2963 || (out_attr[i].i == VAL_CSKY_FPU_ABI_SOFT
2964 && in_attr[i].i == VAL_CSKY_FPU_ABI_SOFTFP)))
2965 {
2966 out_attr[i].i = in_attr[i].i;
2967 }
2968 else if (out_attr[i].i == VAL_CSKY_FPU_ABI_HARD
2969 && (out_attr[i].i != in_attr[i].i
2970 && in_attr[i].i != 0))
2971 {
2972 _bfd_error_handler
2973 (_("Error: %pB and %pB has different FPU ABI"), ibfd, obfd);
2974 result = FALSE;
2975 }
2976 break;
2977
2978 default:
2979 result =
2980 result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
2981 break;
2982 }
2983
2984 /* If out_attr was copied from in_attr then it won't have a type yet. */
2985 if (in_attr[i].type && !out_attr[i].type)
2986 out_attr[i].type = in_attr[i].type;
2987 }
2988
2989 /* Merge Tag_compatibility attributes and any common GNU ones. */
2990 if (!_bfd_elf_merge_object_attributes (ibfd, info))
2991 return FALSE;
2992
2993 /* Check for any attributes not known on CSKY. */
2994 result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
2995
2996 return result;
2997}
2998
b8891f8d
AJ		 2999/* Merge backend specific data from an object file to the output
3000 object file when linking. */
3001
3002static bfd_boolean
3003csky_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
3004{
3005 bfd *obfd = info->output_bfd;
3006 flagword old_flags;
3007 flagword new_flags;
3008 csky_arch_for_merge *old_arch = NULL;
3009 csky_arch_for_merge *new_arch = NULL;
0861f561
CQ		 3010 flagword newest_flag = 0;
3011 const char *sec_name;
3012 obj_attribute *out_attr;
b8891f8d
AJ		 3013
3014 /* Check if we have the same endianness. */
3015 if (! _bfd_generic_verify_endian_match (ibfd, info))
3016 return FALSE;
3017
3018 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3019 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3020 return TRUE;
3021
0861f561
CQ		 3022 /* Merge ".csky.attribute" section. */
3023 if (!elf32_csky_merge_attributes (ibfd, info))
3024 return FALSE;
b8891f8d
AJ		 3025
3026 if (! elf_flags_init (obfd))
3027 {
3028 /* First call, no flags set. */
3029 elf_flags_init (obfd) = TRUE;
b8891f8d 3030 }
0861f561
CQ		 3031
3032 /* Try to merge e_flag. */
3033 new_flags = elf_elfheader (ibfd)->e_flags;
3034 old_flags = elf_elfheader (obfd)->e_flags;
3035 out_attr = elf_known_obj_attributes_proc (obfd);
3036
3037 /* the flags like"e , f ,g ..." , we take collection. */
3038 newest_flag = (old_flags & (~CSKY_ARCH_MASK))
3039 | (new_flags & (~CSKY_ARCH_MASK));
3040
3041 sec_name = get_elf_backend_data (ibfd)->obj_attrs_section;
3042 if (bfd_get_section_by_name (ibfd, sec_name) == NULL)
b8891f8d 3043 {
0861f561
CQ		 3044 /* Input BFDs have no ".csky.attribute" section. */
3045 new_arch = csky_find_arch_with_eflag (new_flags & CSKY_ARCH_MASK);
3046 old_arch = csky_find_arch_with_name (out_attr[Tag_CSKY_ARCH_NAME].s);
b8891f8d 3047
0861f561 3048 if (new_arch != NULL && old_arch != NULL)
b8891f8d 3049 {
0861f561 3050 if (new_arch->class != old_arch->class)
b8891f8d 3051 {
0861f561
CQ		 3052 _bfd_error_handler
3053 /* xgettext:c-format */
3054 (_("%pB: machine flag conflict with target"), ibfd);
3055 bfd_set_error (bfd_error_wrong_format);
3056 return FALSE;
3057 }
3058 else if (new_arch->class_level != old_arch->class_level)
3059 {
3060 csky_arch_for_merge *newest_arch =
3061 (new_arch->class_level > old_arch->class_level
3062 ? new_arch : old_arch);
3063
3064 if (new_arch->do_warning || old_arch->do_warning)
b8891f8d
AJ		 3065 {
3066 _bfd_error_handler
3067 /* xgettext:c-format */
0861f561
CQ		 3068 (_("warning: file %pB's arch flag %s conflicts with "
3069 "target ck%s, using %s"),
3070 ibfd, new_arch->name, old_arch->name,
3071 newest_arch->name);
b8891f8d 3072 bfd_set_error (bfd_error_wrong_format);
b8891f8d 3073 }
b8891f8d 3074
0861f561
CQ		 3075 if (out_attr[Tag_CSKY_ARCH_NAME].s != NULL)
3076 bfd_release (obfd, out_attr[Tag_CSKY_ARCH_NAME].s);
3077
3078 out_attr[Tag_CSKY_ARCH_NAME].s =
3079 _bfd_elf_attr_strdup (obfd, newest_arch->name);
b8891f8d
AJ		 3080 }
3081 else
3082 newest_flag |= ((new_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK))
3083 | (old_flags & (CSKY_ARCH_MASK | CSKY_ABI_MASK)));
3084 }
3085 else
0861f561
CQ		 3086 {
3087 if (new_arch && new_arch->name != NULL)
3088 out_attr[Tag_CSKY_ARCH_NAME].s =
3089 _bfd_elf_attr_strdup (obfd, new_arch->name);
3090 }
b8891f8d 3091 }
0861f561
CQ		 3092
3093 elf_elfheader (obfd)->e_flags = newest_flag;
3094
b8891f8d
AJ		 3095 return TRUE;
3096}
3097
3098/* Ignore the discarded relocs in special sections in link time. */
3099
3100static bfd_boolean
3101csky_elf_ignore_discarded_relocs (asection *sec)
3102{
3103 if (strcmp (sec->name, ".csky_stack_size") == 0)
3104 return TRUE;
3105 return FALSE;
3106}
3107
3108/* .csky_stack_size are not referenced directly. This pass marks all of
3109 them as required. */
3110
3111static bfd_boolean
3112elf32_csky_gc_mark_extra_sections (struct bfd_link_info *info,
3113 elf_gc_mark_hook_fn gc_mark_hook ATTRIBUTE_UNUSED)
3114{
3115 bfd *sub;
3116
3117 _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook);
3118
3119 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
3120 {
3121 asection *o;
3122
3123 for (o = sub->sections; o != NULL; o = o->next)
3124 if (strcmp (o->name, ".csky_stack_size") == 0)
3125 o->gc_mark = 1;
3126 }
3127
3128 return TRUE;
3129}
3130
3131/* The linker repeatedly calls this function for each input section,
3132 in the order that input sections are linked into output sections.
3133 Build lists of input sections to determine groupings between which
3134 we may insert linker stubs. */
3135
3136void
3137elf32_csky_next_input_section (struct bfd_link_info *info,
3138 asection *isec)
3139{
3140 struct csky_elf_link_hash_table *htab = csky_elf_hash_table (info);
3141 if (htab == NULL)
3142 return;
3143 if (isec->output_section->index <= htab->top_index)
3144 {
3145 asection **list = htab->input_list + isec->output_section->index;
3146
3147 if (*list != bfd_abs_section_ptr)
3148 {
3149 /* Steal the link_sec pointer for our list. */
3150#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3151 /* This happens to make the list in reverse order,
3152 which we reverse later in group_sections. */
3153 PREV_SEC (isec) = *list;
3154 *list = isec;
3155 }
3156 }
3157}
3158
3159/* See whether we can group stub sections together. Grouping stub
3160 sections may result in fewer stubs. More importantly, we need to
3161 put all .init* and .fini* stubs at the end of the .init or
3162 .fini output sections respectively, because glibc splits the
3163 _init and _fini functions into multiple parts. Putting a stub in
3164 the middle of a function is not a good idea. */
3165
3166static void
3167group_sections (struct csky_elf_link_hash_table *htab,
3168 bfd_size_type stub_group_size,
3169 bfd_boolean stubs_always_after_branch)
3170{
3171 asection **list = htab->input_list;
3172
3173 do
3174 {
3175 asection *tail = *list;
3176 asection *head;
3177
3178 if (tail == bfd_abs_section_ptr)
3179 continue;
3180
3181 /* Reverse the list: we must avoid placing stubs at the
4b24dd1a
AM		 3182 beginning of the section because the beginning of the text
3183 section may be required for an interrupt vector in bare metal
3184 code. */
b8891f8d
AJ		 3185#define NEXT_SEC PREV_SEC
3186 head = NULL;
3187 while (tail != NULL)
3188 {
3189 /* Pop from tail. */
3190 asection *item = tail;
3191 tail = PREV_SEC (item);
3192
3193 /* Push on head. */
3194 NEXT_SEC (item) = head;
3195 head = item;
3196 }
3197
3198 while (head != NULL)
3199 {
3200 asection *curr;
3201 asection *next;
3202 bfd_vma stub_group_start = head->output_offset;
3203 bfd_vma end_of_next;
3204
3205 curr = head;
3206 while (NEXT_SEC (curr) != NULL)
3207 {
3208 next = NEXT_SEC (curr);
3209 end_of_next = next->output_offset + next->size;
3210 if (end_of_next - stub_group_start >= stub_group_size)
3211 /* End of NEXT is too far from start, so stop. */
3212 break;
3213 curr = next;
3214 }
3215
3216 /* OK, the size from the start to the start of CURR is less
3217 * than stub_group_size and thus can be handled by one stub
3218 * section. (Or the head section is itself larger than
3219 * stub_group_size, in which case we may be toast.)
3220 * We should really be keeping track of the total size of
3221 * stubs added here, as stubs contribute to the final output
3222 * section size. */
3223 do
3224 {
3225 next = NEXT_SEC (head);
3226 /* Set up this stub group. */
3227 htab->stub_group[head->id].link_sec = curr;
3228 }
3229 while (head != curr && (head = next) != NULL);
3230
3231 /* But wait, there's more! Input sections up to stub_group_size
3232 * bytes after the stub section can be handled by it too. */
3233 if (!stubs_always_after_branch)
3234 {
3235 stub_group_start = curr->output_offset + curr->size;
3236
3237 while (next != NULL)
3238 {
3239 end_of_next = next->output_offset + next->size;
3240 if (end_of_next - stub_group_start >= stub_group_size)
3241 /* End of NEXT is too far from stubs, so stop. */
3242 break;
3243 /* Add NEXT to the stub group. */
3244 head = next;
3245 next = NEXT_SEC (head);
3246 htab->stub_group[head->id].link_sec = curr;
3247 }
3248 }
3249 head = next;
3250 }
3251 }
3252 while (list++ != htab->input_list + htab->top_index);
3253
3254 free (htab->input_list);
3255#undef PREV_SEC
3256#undef NEXT_SEC
3257}
3258
3259/* If the symbol referenced by bsr is defined in shared object file,
3260 or it is a weak symbol and we aim to create shared object file,
3261 we must create a stub for this bsr. */
3262
3263static bfd_boolean
3264sym_must_create_stub (struct elf_link_hash_entry *h,
3265 struct bfd_link_info *info)
3266{
3267 if (h != NULL
3268 && ((h->def_dynamic && !h->def_regular)
3269 || (bfd_link_pic (info) && h->root.type == bfd_link_hash_defweak)))
3270 return TRUE;
3271 else
3272 return FALSE;
3273}
3274
3275/* Calculate the template, template size and instruction size for a stub.
3276 Return value is the instruction size. */
3277
3278static unsigned int
3279find_stub_size_and_template (enum elf32_csky_stub_type stub_type,
3280 const insn_sequence **stub_template,
3281 int *stub_template_size)
3282{
3283 const insn_sequence *template_sequence = NULL;
3284 int template_size = 0;
3285 int i;
3286 unsigned int size;
3287
3288 template_sequence = stub_definitions[stub_type].template_sequence;
3289 template_size = stub_definitions[stub_type].template_size;
3290
3291 size = 0;
3292 for (i = 0; i < template_size; i++)
3293 {
3294 switch (template_sequence[i].type)
3295 {
3296 case INSN16:
3297 size += 2;
3298 break;
3299
3300 case INSN32:
3301 case DATA_TYPE:
3302 size += 4;
3303 break;
3304
3305 default:
3306 BFD_FAIL ();
3307 return FALSE;
3308 }
3309 }
3310
3311 if (stub_template)
3312 *stub_template = template_sequence;
3313 if (stub_template_size)
3314 *stub_template_size = template_size;
3315
3316 return size;
3317}
3318
3319/* As above, but don't actually build the stub. Just bump offset so
3320 we know stub section sizes. */
3321
3322static bfd_boolean
3323csky_size_one_stub (struct bfd_hash_entry *gen_entry,
3324 void * in_arg ATTRIBUTE_UNUSED)
3325{
3326 struct elf32_csky_stub_hash_entry *stub_entry;
3327 const insn_sequence *template_sequence = NULL;
3328 int template_size = 0;
3329 int size = 0;
3330
3331 /* Massage our args to the form they really have. */
3332 stub_entry = (struct elf32_csky_stub_hash_entry *) gen_entry;
3333
3334 BFD_ASSERT (stub_entry->stub_type > csky_stub_none
3335 && stub_entry->stub_type < ARRAY_SIZE (stub_definitions));
3336 size = find_stub_size_and_template (stub_entry->stub_type,
3337 &template_sequence, &template_size);
3338 stub_entry->stub_size = size;
3339 stub_entry->stub_template = template_sequence;
3340 stub_entry->stub_template_size = template_size;
3341
3342 size = (size + 7) & ~7;
3343 stub_entry->stub_sec->size += size;
3344 return TRUE;
3345}
3346
3347/* Add a new stub entry to the stub hash. Not all fields of the new
3348 stub entry are initialised. */
3349
3350static struct elf32_csky_stub_hash_entry *
3351elf32_csky_add_stub (const char *stub_name,
3352 asection *section,
3353 struct csky_elf_link_hash_table *htab)
3354{
3355 asection *link_sec;
3356 asection *stub_sec;
3357 struct elf32_csky_stub_hash_entry *stub_entry;
3358
3359 stub_sec = elf32_csky_create_or_find_stub_sec (&link_sec, section, htab);
3360 if (stub_sec == NULL)
3361 return NULL;
3362
3363 /* Enter this entry into the linker stub hash table. */
3364 stub_entry = csky_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3365 TRUE, FALSE);
3366 if (stub_entry == NULL)
3367 {
3368 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
3369 section->owner, stub_name);
3370 return NULL;
3371 }
3372
3373 stub_entry->stub_sec = stub_sec;
3374 stub_entry->stub_offset = 0;
3375 stub_entry->id_sec = link_sec;
3376
3377 return stub_entry;
3378}
3379
3380/* Determine and set the size of the stub section for a final link.
3381 The basic idea here is to examine all the relocations looking for
3382 PC-relative calls to a target that is unreachable with a "bsr"
3383 instruction. */
3384
3385bfd_boolean
3386elf32_csky_size_stubs (bfd *output_bfd,
3387 bfd *stub_bfd,
3388 struct bfd_link_info *info,
3389 bfd_signed_vma group_size,
3390 asection *(*add_stub_section) (const char*, asection*),
3391 void (*layout_sections_again) (void))
3392{
3393 bfd_size_type stub_group_size;
3394 bfd_boolean stubs_always_after_branch;
3395 struct csky_elf_link_hash_table *htab = csky_elf_hash_table (info);
3396
3397 if (htab == NULL)
3398 return FALSE;
3399
3400 /* Propagate mach to stub bfd, because it may not have been
3401 finalized when we created stub_bfd. */
3402 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3403 bfd_get_mach (output_bfd));
3404
3405 /* Stash our params away. */
3406 htab->stub_bfd = stub_bfd;
3407 htab->add_stub_section = add_stub_section;
3408 htab->layout_sections_again = layout_sections_again;
3409 stubs_always_after_branch = group_size < 0;
3410
3411 if (group_size < 0)
3412 stub_group_size = -group_size;
3413 else
3414 stub_group_size = group_size;
3415
3416 if (stub_group_size == 1)
3417 /* The 'bsr' range in abiv2 is +-64MB has to be used as the
3418 default maximum size.
3419 This value is 128K less than that, which allows for 131072
3420 byte stubs. If we exceed that, then we will fail to link.
3421 The user will have to relink with an explicit group size
3422 option. */
3423 stub_group_size = 66977792;
3424
3425 group_sections (htab, stub_group_size, stubs_always_after_branch);
3426
3427 while (1)
3428 {
3429 bfd *input_bfd;
3430 unsigned int bfd_indx;
3431 asection *stub_sec;
3432 bfd_boolean stub_changed = FALSE;
3433
3434 for (input_bfd = info->input_bfds, bfd_indx = 0;
3435 input_bfd != NULL;
3436 input_bfd = input_bfd->link.next, bfd_indx++)
3437 {
3438 Elf_Internal_Shdr *symtab_hdr;
3439 asection *section;
3440 Elf_Internal_Sym *local_syms = NULL;
3441
3442 /* We'll need the symbol table in a second. */
3443 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3444 if (symtab_hdr->sh_info == 0)
3445 continue;
3446
3447 /* Walk over each section attached to the input bfd. */
3448 for (section = input_bfd->sections;
3449 section != NULL;
3450 section = section->next)
3451 {
3452 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3453
3454 /* If there aren't any relocs, then there's nothing more
3455 * to do. */
3456 if ((section->flags & SEC_RELOC) == 0
3457 || section->reloc_count == 0
3458 || (section->flags & SEC_CODE) == 0)
3459 continue;
3460
3461 /* If this section is a link-once section that will be
3462 discarded, then don't create any stubs. */
3463 if (section->output_section == NULL
3464 || section->output_section->owner != output_bfd)
3465 continue;
3466
3467 /* Get the relocs. */
3468 internal_relocs = _bfd_elf_link_read_relocs (input_bfd,
3469 section,
3470 NULL, NULL,
3471 info->keep_memory);
3472
3473 if (internal_relocs == NULL)
3474 goto error_ret_free_local;
3475
3476 /* Now examine each relocation. */
3477 irela = internal_relocs;
3478 irelaend = irela + section->reloc_count;
3479 for (; irela < irelaend; irela++)
3480 {
3481 unsigned int r_type, r_indx;
3482 enum elf32_csky_stub_type stub_type;
3483 struct elf32_csky_stub_hash_entry *stub_entry;
3484 asection *sym_sec;
3485 bfd_vma sym_value;
3486 bfd_vma destination;
3487 struct csky_elf_link_hash_entry *hash;
3488 const char *sym_name;
3489 char *stub_name;
3490 const asection *id_sec;
3491 unsigned char st_type;
3492
3493 r_type = ELF32_R_TYPE (irela->r_info);
3494 r_indx = ELF32_R_SYM (irela->r_info);
3495 if (r_type >= (unsigned int) R_CKCORE_MAX)
3496 {
3497 bfd_set_error (bfd_error_bad_value);
dc1e8a47 3498 error_ret_free_internal:
b8891f8d
AJ		 3499 if (elf_section_data (section)->relocs == NULL)
3500 free (internal_relocs);
3501 goto error_ret_free_local;
3502 }
3503
3504 /* Only look for stubs on branch instructions. */
3505 if (r_type != (unsigned int) R_CKCORE_PCREL_IMM26BY2)
3506 continue;
3507 /* Now determine the call target, its name, value,
3508 section. */
3509 sym_sec = NULL;
3510 sym_value = 0;
3511 destination = 0;
3512 hash = NULL;
3513 sym_name = NULL;
3514 if (r_indx < symtab_hdr->sh_info)
3515 {
3516 /* It's a local symbol. */
3517 Elf_Internal_Sym *sym;
3518 Elf_Internal_Shdr *hdr;
3519 if (local_syms == NULL)
3520 local_syms =
3521 (Elf_Internal_Sym *) symtab_hdr->contents;
3522 if (local_syms == NULL)
3523 {
3524 local_syms =
3525 bfd_elf_get_elf_syms (input_bfd,
3526 symtab_hdr,
3527 symtab_hdr->sh_info,
3528 0, NULL, NULL, NULL);
3529 if (local_syms == NULL)
3530 goto error_ret_free_internal;
3531 }
3532 sym = local_syms + r_indx;
3533 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
3534 sym_sec = hdr->bfd_section;
3535 if (!sym_sec)
3536 /* This is an undefined symbol. It can never
3537 be resolved. */
3538 continue;
3539 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
3540 sym_value = sym->st_value;
3541 destination = (sym_value + irela->r_addend
3542 + sym_sec->output_offset
3543 + sym_sec->output_section->vma);
3544 st_type = ELF_ST_TYPE (sym->st_info);
3545 sym_name =
3546 bfd_elf_string_from_elf_section (input_bfd,
3547 symtab_hdr->sh_link,
3548 sym->st_name);
3549 }
3550 else
3551 {
3552 /* It's an external symbol. */
3553 int e_indx;
3554 e_indx = r_indx - symtab_hdr->sh_info;
3555 hash = ((struct csky_elf_link_hash_entry *)
3556 elf_sym_hashes (input_bfd)[e_indx]);
3557
3558 while (hash->elf.root.type == bfd_link_hash_indirect
3559 || hash->elf.root.type == bfd_link_hash_warning)
3560 hash = ((struct csky_elf_link_hash_entry *)
3561 hash->elf.root.u.i.link);
3562 if (hash->elf.root.type == bfd_link_hash_defined
3563 || hash->elf.root.type == bfd_link_hash_defweak)
3564 {
3565 sym_sec = hash->elf.root.u.def.section;
3566 sym_value = hash->elf.root.u.def.value;
3567
3568 struct csky_elf_link_hash_table *globals =
3569 csky_elf_hash_table (info);
3570 /* FIXME For a destination in a shared library. */
3571 if (globals->elf.splt != NULL && hash != NULL
3572 && hash->elf.plt.offset != (bfd_vma) -1)
3573 continue;
3574 else if (sym_sec->output_section != NULL)
3575 destination = (sym_value + irela->r_addend
3576 + sym_sec->output_offset
3577 + sym_sec->output_section->vma);
3578 }
3579 else if (hash->elf.root.type == bfd_link_hash_undefined
3580 || (hash->elf.root.type
3581 == bfd_link_hash_undefweak))
3582 /* FIXME For a destination in a shared library. */
3583 continue;
3584 else
3585 {
3586 bfd_set_error (bfd_error_bad_value);
3587 goto error_ret_free_internal;
3588 }
3589 st_type = ELF_ST_TYPE (hash->elf.type);
3590 sym_name = hash->elf.root.root.string;
3591 }
3592 do
3593 {
3594 /* Determine what (if any) linker stub is needed. */
3595 stub_type = csky_type_of_stub (info, section, irela,
3596 st_type, hash,
3597 destination, sym_sec,
3598 input_bfd, sym_name);
3599 if (stub_type == csky_stub_none)
3600 break;
3601
3602 /* Support for grouping stub sections. */
3603 id_sec = htab->stub_group[section->id].link_sec;
3604
3605 /* Get the name of this stub. */
3606 stub_name = elf32_csky_stub_name (id_sec, sym_sec, hash,
3607 irela);
3608 if (!stub_name)
3609 goto error_ret_free_internal;
3610 /* We've either created a stub for this reloc already,
3611 or we are about to. */
3612 stub_entry
3613 = csky_stub_hash_lookup (&htab->stub_hash_table,
3614 stub_name,
3615 FALSE, FALSE);
3616 if (stub_entry != NULL)
3617 {
3618 /* The proper stub has already been created. */
3619 free (stub_name);
3620 stub_entry->target_value = sym_value;
3621 break;
3622 }
3623 stub_entry = elf32_csky_add_stub (stub_name, section,
3624 htab);
3625 if (stub_entry == NULL)
3626 {
3627 free (stub_name);
3628 goto error_ret_free_internal;
3629 }
3630 stub_entry->target_value = sym_value;
3631 stub_entry->target_section = sym_sec;
3632 stub_entry->stub_type = stub_type;
3633 stub_entry->h = hash;
3634 stub_entry->st_type = st_type;
3635
3636 if (sym_name == NULL)
3637 sym_name = "unnamed";
3638 stub_entry->output_name =
3639 bfd_alloc (htab->stub_bfd,
3640 (sizeof (STUB_ENTRY_NAME)
3641 + strlen (sym_name)));
3642 if (stub_entry->output_name == NULL)
3643 {
3644 free (stub_name);
3645 goto error_ret_free_internal;
3646 }
3647 sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
3648 sym_name);
3649 stub_changed = TRUE;
3650 }
3651 while (0);
3652 }
3653 /* We're done with the internal relocs, free them. */
3654 if (elf_section_data (section)->relocs == NULL)
3655 free (internal_relocs);
3656 }
3657 }
3658 if (!stub_changed)
3659 break;
3660 /* OK, we've added some stubs. Find out the new size of the
3661 stub sections. */
3662 for (stub_sec = htab->stub_bfd->sections;
3663 stub_sec != NULL;
3664 stub_sec = stub_sec->next)
3665 {
3666 /* Ignore non-stub sections. */
3667 if (!strstr (stub_sec->name, STUB_SUFFIX))
3668 continue;
3669 stub_sec->size = 0;
3670 }
3671 bfd_hash_traverse (&htab->stub_hash_table, csky_size_one_stub, htab);
3672 /* Ask the linker to do its stuff. */
3673 (*htab->layout_sections_again) ();
3674 }
3675
3676 return TRUE;
dc1e8a47 3677 error_ret_free_local:
b8891f8d
AJ		 3678 return FALSE;
3679}
3680
3681static bfd_boolean
3682csky_build_one_stub (struct bfd_hash_entry *gen_entry,
3683 void * in_arg)
3684{
3685#define MAXRELOCS 2
3686 struct elf32_csky_stub_hash_entry *stub_entry;
3687 struct bfd_link_info *info;
3688 asection *stub_sec;
3689 bfd *stub_bfd;
3690 bfd_byte *loc;
3691 bfd_vma sym_value;
3692 int template_size;
3693 int size;
3694 const insn_sequence *template_sequence;
3695 int i;
3696 struct csky_elf_link_hash_table * globals;
3697 int stub_reloc_idx[MAXRELOCS] = {-1, -1};
3698 int stub_reloc_offset[MAXRELOCS] = {0, 0};
3699 int nrelocs = 0;
3700 struct elf_link_hash_entry *h = NULL;
3701
3702 /* Massage our args to the form they really have. */
3703 stub_entry = (struct elf32_csky_stub_hash_entry *)gen_entry;
3704 info = (struct bfd_link_info *) in_arg;
3705
abf874aa
CL		 3706 /* Fail if the target section could not be assigned to an output
3707 section. The user should fix his linker script. */
3708 if (stub_entry->target_section->output_section == NULL
3709 && info->non_contiguous_regions)
53215f21
CL		 3710 info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. "
3711 "Retry without --enable-non-contiguous-regions.\n"),
3712 stub_entry->target_section);
abf874aa 3713
b8891f8d
AJ		 3714 globals = csky_elf_hash_table (info);
3715 if (globals == NULL)
3716 return FALSE;
3717 stub_sec = stub_entry->stub_sec;
3718
3719 /* Make a note of the offset within the stubs for this entry. */
3720 stub_entry->stub_offset = stub_sec->size;
3721 loc = stub_sec->contents + stub_entry->stub_offset;
3722
3723 stub_bfd = stub_sec->owner;
3724
3725 /* This is the address of the stub destination. */
3726 h = &stub_entry->h->elf;
3727 if (sym_must_create_stub (h, info)
3728 && !(bfd_link_pic (info)
3729 && h->root.type == bfd_link_hash_defweak
3730 && h->def_regular
3731 && !h->def_dynamic))
3732 sym_value = 0;
3733 else
3734 sym_value = (stub_entry->target_value
3735 + stub_entry->target_section->output_offset
3736 + stub_entry->target_section->output_section->vma);
3737
3738 template_sequence = stub_entry->stub_template;
3739 template_size = stub_entry->stub_template_size;
3740
3741 size = 0;
3742 for (i = 0; i < template_size; i++)
3743 switch (template_sequence[i].type)
3744 {
3745 case INSN16:
3746 bfd_put_16 (stub_bfd, (bfd_vma) template_sequence[i].data,
3747 loc + size);
3748 size += 2;
3749 break;
3750 case INSN32:
3751 csky_put_insn_32 (stub_bfd, (bfd_vma) template_sequence[i].data,
3752 loc + size);
3753 size += 4;
3754 break;
3755 case DATA_TYPE:
3756 bfd_put_32 (stub_bfd, (bfd_vma) template_sequence[i].data,
3757 loc + size);
3758 stub_reloc_idx[nrelocs] = i;
3759 stub_reloc_offset[nrelocs++] = size;
3760 size += 4;
3761 break;
3762 default:
3763 BFD_FAIL ();
3764 return FALSE;
3765 }
3766 stub_sec->size += size;
3767
3768 /* Stub size has already been computed in csky_size_one_stub. Check
3769 consistency. */
3770 BFD_ASSERT (size == stub_entry->stub_size);
3771
3772 /* Assume there is at least one and at most MAXRELOCS entries to relocate
3773 in each stub. */
3774 BFD_ASSERT (nrelocs != 0 && nrelocs <= MAXRELOCS);
3775
3776 for (i = 0; i < nrelocs; i++)
3777 {
3778 if (sym_must_create_stub (h, info))
3779 {
3780 Elf_Internal_Rela outrel;
3781 asection * sreloc = globals->elf.srelgot;
3782
3783 outrel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i];
3784 outrel.r_info =
3785 ELF32_R_INFO (h->dynindx,
3786 template_sequence[stub_reloc_idx[i]].r_type);
3787 outrel.r_addend = template_sequence[stub_reloc_idx[i]].reloc_addend;
3788
3789 loc = sreloc->contents;
3790 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3791
3792 if (loc != NULL)
3793 bfd_elf32_swap_reloca_out (info->output_bfd, &outrel, loc);
3794 }
3795 _bfd_final_link_relocate (elf32_csky_howto_from_type
3796 (template_sequence[stub_reloc_idx[i]].r_type),
3797 stub_bfd, stub_sec, stub_sec->contents,
3798 stub_entry->stub_offset + stub_reloc_offset[i],
3799 sym_value + stub_entry->target_addend,
3800 template_sequence[stub_reloc_idx[i]].reloc_addend);
3801 }
3802
3803 return TRUE;
3804#undef MAXRELOCS
3805}
3806
3807/* Build all the stubs associated with the current output file. The
3808 stubs are kept in a hash table attached to the main linker hash
3809 table. We also set up the .plt entries for statically linked PIC
3810 functions here. This function is called via arm_elf_finish in the
3811 linker. */
3812
3813bfd_boolean
3814elf32_csky_build_stubs (struct bfd_link_info *info)
3815{
3816 asection *stub_sec;
3817 struct bfd_hash_table *table;
3818 struct csky_elf_link_hash_table *htab;
3819
3820 htab = csky_elf_hash_table (info);
3821
3822 if (htab == NULL)
3823 return FALSE;
3824
3825 for (stub_sec = htab->stub_bfd->sections;
3826 stub_sec != NULL;
3827 stub_sec = stub_sec->next)
3828 {
3829 bfd_size_type size;
3830
3831 /* Ignore non-stub sections. */
3832 if (!strstr (stub_sec->name, STUB_SUFFIX))
3833 continue;
3834
3835 /* Allocate memory to hold the linker stubs. */
3836 size = stub_sec->size;
3837 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3838 if (stub_sec->contents == NULL && size != 0)
3839 return FALSE;
3840 stub_sec->size = 0;
3841 }
3842
3843 /* Build the stubs as directed by the stub hash table. */
3844 table = &htab->stub_hash_table;
3845 bfd_hash_traverse (table, csky_build_one_stub, info);
3846
3847 return TRUE;
3848}
3849
3850/* Set up various things so that we can make a list of input sections
3851 for each output section included in the link. Returns -1 on error,
3852 0 when no stubs will be needed, and 1 on success. */
3853
3854int
3855elf32_csky_setup_section_lists (bfd *output_bfd,
3856 struct bfd_link_info *info)
3857{
3858 bfd *input_bfd;
3859 unsigned int bfd_count;
3860 unsigned int top_id, top_index;
3861 asection *section;
3862 asection **input_list, **list;
986f0783 3863 size_t amt;
b8891f8d
AJ		 3864 struct csky_elf_link_hash_table *htab = csky_elf_hash_table (info);
3865
3866 if (!htab)
3867 return 0;
3868 if (! is_elf_hash_table (htab))
3869 return 0;
3870
3871 /* Count the number of input BFDs and find the top input section id. */
3872 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3873 input_bfd != NULL;
3874 input_bfd = input_bfd->link.next)
3875 {
3876 bfd_count += 1;
3877 for (section = input_bfd->sections;
3878 section != NULL;
3879 section = section->next)
3880 if (top_id < section->id)
3881 top_id = section->id;
3882 }
3883 htab->bfd_count = bfd_count;
3884 amt = sizeof (struct map_stub) * (top_id + 1);
3885 htab->stub_group = bfd_zmalloc (amt);
3886 if (htab->stub_group == NULL)
3887 return -1;
3888
3889 /* We can't use output_bfd->section_count here to find the top output
3890 section index as some sections may have been removed, and
3891 _bfd_strip_section_from_output doesn't renumber the indices. */
3892 for (section = output_bfd->sections, top_index = 0;
3893 section != NULL;
3894 section = section->next)
3895 if (top_index < section->index)
3896 top_index = section->index;
3897 htab->top_index = top_index;
3898 amt = sizeof (asection *) * (top_index + 1);
3899 input_list = bfd_malloc (amt);
3900 htab->input_list = input_list;
3901 if (input_list == NULL)
3902 return -1;
3903 /* For sections we aren't interested in, mark their entries with a
3904 value we can check later. */
3905 list = input_list + top_index;
3906 do
3907 *list = bfd_abs_section_ptr;
3908 while (list-- != input_list);
3909 for (section = output_bfd->sections;
3910 section != NULL;
3911 section = section->next)
3912 if ((section->flags & SEC_CODE) != 0)
3913 input_list[section->index] = NULL;
3914
3915 return 1;
3916}
3917
3918static bfd_reloc_status_type
3919csky_relocate_contents (reloc_howto_type *howto,
3920 bfd *input_bfd,
f2173852 3921 bfd_vma relocation,
b8891f8d
AJ		 3922 bfd_byte *location)
3923{
3924 int size;
3925 bfd_vma x = 0;
3926 bfd_reloc_status_type flag;
3927 unsigned int rightshift = howto->rightshift;
3928 unsigned int bitpos = howto->bitpos;
3929
fde0214a 3930 if (howto->negate)
b8891f8d
AJ		 3931 relocation = -relocation;
3932
3933 /* FIXME: these macros should be defined at file head or head file head. */
3934#define CSKY_INSN_ADDI_TO_SUBI 0x04000000
279edac5
AM		 3935#define CSKY_INSN_MOV_RTB 0xc41d4820 /* mov32 rx, r29, 0 */
3936#define CSKY_INSN_MOV_RDB 0xc41c4820 /* mov32 rx, r28, 0 */
b8891f8d
AJ		 3937#define CSKY_INSN_GET_ADDI_RZ(x) (((x) & 0x03e00000) >> 21)
3938#define CSKY_INSN_SET_MOV_RZ(x) ((x) & 0x0000001f)
3939#define CSKY_INSN_JSRI_TO_LRW 0xea9a0000
3940#define CSKY_INSN_JSR_R26 0xe8fa0000
3941
3942 /* Get the value we are going to relocate. */
3943 size = bfd_get_reloc_size (howto);
3944 switch (size)
3945 {
3946 default:
3947 case 0:
3948 abort ();
3949 case 1:
3950 x = bfd_get_8 (input_bfd, location);
3951 break;
3952 case 2:
3953 x = bfd_get_16 (input_bfd, location);
3954 break;
3955 case 4:
3956 if (need_reverse_bits)
3957 {
3958 x = csky_get_insn_32 (input_bfd, location);
3959
3960 if (R_CKCORE_DOFFSET_LO16 == howto->type)
3961 {
f2173852 3962 if ((bfd_signed_vma) relocation < 0)
b8891f8d
AJ		 3963 {
3964 x |= CSKY_INSN_ADDI_TO_SUBI;
3965 relocation = -relocation;
3966 }
3967 else if (0 == relocation)
3968 x = (CSKY_INSN_MOV_RDB |
3969 CSKY_INSN_SET_MOV_RZ (CSKY_INSN_GET_ADDI_RZ (x)));
3970 }
3971 else if (R_CKCORE_TOFFSET_LO16 == howto->type)
3972 {
f2173852 3973 if ((bfd_signed_vma) relocation < 0)
b8891f8d
AJ		 3974 {
3975 x |= CSKY_INSN_ADDI_TO_SUBI;
3976 relocation = -relocation;
3977 }
3978 else if (0 == relocation)
3979 x = (CSKY_INSN_MOV_RTB |
3980 CSKY_INSN_SET_MOV_RZ (CSKY_INSN_GET_ADDI_RZ (x)));
3981 }
3982 }
3983 else
3984 x = bfd_get_32 (input_bfd, location);
3985 break;
3986 }
3987 /* Check for overflow. FIXME: We may drop bits during the addition
3988 which we don't check for. We must either check at every single
3989 operation, which would be tedious, or we must do the computations
3990 in a type larger than bfd_vma, which would be inefficient. */
3991 flag = bfd_reloc_ok;
3992 if (howto->complain_on_overflow != complain_overflow_dont)
3993 {
f2173852
AM		 3994 bfd_vma addrmask;
3995 bfd_vma fieldmask;
3996 bfd_vma signmask;
3997 bfd_vma ss;
3998 bfd_vma a;
3999 bfd_vma b;
4000 bfd_vma sum;
b8891f8d
AJ		 4001 /* Get the values to be added together. For signed and unsigned
4002 relocations, we assume that all values should be truncated to
4003 the size of an address. For bitfields, all the bits matter.
4004 See also bfd_check_overflow. */
4005#define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
4006 fieldmask = N_ONES (howto->bitsize);
4007 signmask = ~fieldmask;
4008 addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
4009 a = (relocation & addrmask) >> rightshift;
4010 if (read_content_substitute)
4011 x = read_content_substitute;
4012 b = (x & howto->src_mask & addrmask) >> bitpos;
4013
4014 switch (howto->complain_on_overflow)
4015 {
4016 case complain_overflow_signed:
4017 /* If any sign bits are set, all sign bits must be set.
4018 That is, A must be a valid negative address after
4019 shifting. */
4020 signmask = ~(fieldmask >> 1);
4021 /* Fall through. */
4022
4023 case complain_overflow_bitfield:
4024 /* Much like the signed check, but for a field one bit
4025 wider. We allow a bitfield to represent numbers in the
4026 range -2**n to 2**n-1, where n is the number of bits in the
4027 field. Note that when bfd_vma is 32 bits, a 32-bit reloc
4028 can't overflow, which is exactly what we want. */
4029 ss = a & signmask;
4030 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
4031 flag = bfd_reloc_overflow;
4032 /* We only need this next bit of code if the sign bit of B
4033 is below the sign bit of A. This would only happen if
4034 SRC_MASK had fewer bits than BITSIZE. Note that if
4035 SRC_MASK has more bits than BITSIZE, we can get into
4036 trouble; we would need to verify that B is in range, as
4037 we do for A above. */
4038 ss = ((~howto->src_mask) >> 1) & howto->src_mask;
4039 ss >>= bitpos;
4040
4041 /* Set all the bits above the sign bit. */
4042 b = (b ^ ss) - ss;
4043
4044 /* Now we can do the addition. */
4045 sum = a + b;
4046
4047 /* See if the result has the correct sign. Bits above the
4048 sign bit are junk now; ignore them. If the sum is
4049 positive, make sure we did not have all negative inputs;
4050 if the sum is negative, make sure we did not have all
4051 positive inputs. The test below looks only at the sign
4052 bits, and it really just
4053 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
4054
4055 We mask with addrmask here to explicitly allow an address
4056 wrap-around. The Linux kernel relies on it, and it is
4057 the only way to write assembler code which can run when
4058 loaded at a location 0x80000000 away from the location at
4059 which it is linked. */
4060
4061 if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask)
4062 flag = bfd_reloc_overflow;
4063 break;
4064 case complain_overflow_unsigned:
4065 /* Checking for an unsigned overflow is relatively easy:
4066 trim the addresses and add, and trim the result as well.
4067 Overflow is normally indicated when the result does not
4068 fit in the field. However, we also need to consider the
4069 case when, e.g., fieldmask is 0x7fffffff or smaller, an
4070 input is 0x80000000, and bfd_vma is only 32 bits; then we
4071 will get sum == 0, but there is an overflow, since the
4072 inputs did not fit in the field. Instead of doing a
4073 separate test, we can check for this by or-ing in the
4074 operands when testing for the sum overflowing its final
4075 field. */
4076 sum = (a + b) & addrmask;
4077 if ((a | b | sum) & signmask)
4078 flag = bfd_reloc_overflow;
4079 break;
4080 default:
4081 abort ();
4082 }
4083
4084 }
4085 /* Put RELOCATION in the right bits. */
f2173852 4086 relocation >>= rightshift;
b8891f8d
AJ		 4087
4088 if ((howto->type == R_CKCORE_DOFFSET_LO16
4089 || howto->type == R_CKCORE_TOFFSET_LO16)
4090 && relocation == 0)
4091 /* Do nothing lsli32 rx, rz, 0. */
4092 ;
4093 else
4094 {
4095 /* Fir V1, all this relocation must be x -1. */
4096 if (howto->type == R_CKCORE_PCREL_IMM11BY2
4097 || howto->type == R_CKCORE_PCREL_JSR_IMM11BY2
4098 || howto->type == R_CKCORE_DOFFSET_LO16
4099 || howto->type == R_CKCORE_TOFFSET_LO16)
4100 relocation -= 1;
4101 else if (howto->type == R_CKCORE_PCREL_IMM7BY4)
4102 relocation = (relocation & 0x1f) + ((relocation << 3) & 0x300);
4103 else if (howto->type == R_CKCORE_PCREL_FLRW_IMM8BY4)
4104 relocation
4105 = ((relocation << 4) & 0xf0) + ((relocation << 17) & 0x1e00000);
4106 else if (howto->type == R_CKCORE_NOJSRI)
4107 {
4108 x = (x & howto->dst_mask) | CSKY_INSN_JSRI_TO_LRW;
4109 relocation = 0;
4110 csky_put_insn_32 (input_bfd, CSKY_INSN_JSR_R26, location + 4);
4111 }
4112
f2173852 4113 relocation <<= bitpos;
b8891f8d
AJ		 4114 /* Add RELOCATION to the right bits of X. */
4115 x = ((x & ~howto->dst_mask)
4116 | (((x & howto->src_mask) + relocation) & howto->dst_mask));
4117 }
4118 /* Put the relocated value back in the object file. */
4119 switch (size)
4120 {
4121 default:
4122 abort ();
4123 case 1:
4124 bfd_put_8 (input_bfd, x, location);
4125 break;
4126 case 2:
4127 bfd_put_16 (input_bfd, x, location);
4128 break;
4129 case 4:
4130 if (need_reverse_bits)
4131 csky_put_insn_32 (input_bfd, x, location);
4132 else
4133 bfd_put_32 (input_bfd, x, location);
4134 break;
4135 }
4136 return flag;
4137}
4138
4139/* Look up an entry in the stub hash. Stub entries are cached because
4140 creating the stub name takes a bit of time. */
4141
4142static struct elf32_csky_stub_hash_entry *
4143elf32_csky_get_stub_entry (const asection *input_section,
4144 const asection *sym_sec,
4145 struct elf_link_hash_entry *hash,
4146 const Elf_Internal_Rela *rel,
4147 struct csky_elf_link_hash_table *htab)
4148{
4149 struct elf32_csky_stub_hash_entry *stub_entry;
4150 struct csky_elf_link_hash_entry *h
4151 = (struct csky_elf_link_hash_entry *) hash;
4152 const asection *id_sec;
4153
4154 if ((input_section->flags & SEC_CODE) == 0)
4155 return NULL;
4156
4157 /* If this input section is part of a group of sections sharing one
4158 stub section, then use the id of the first section in the group.
4159 Stub names need to include a section id, as there may well be
4160 more than one stub used to reach say, printf, and we need to
4161 distinguish between them. */
4162 id_sec = htab->stub_group[input_section->id].link_sec;
4163 if (h != NULL && h->stub_cache != NULL
4164 && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
4165 stub_entry = h->stub_cache;
4166 else
4167 {
4168 char *stub_name;
4169 stub_name = elf32_csky_stub_name (id_sec, sym_sec, h, rel);
4170 if (stub_name == NULL)
4171 return NULL;
4172 stub_entry = csky_stub_hash_lookup (&htab->stub_hash_table,
4173 stub_name, FALSE, FALSE);
4174 if (h != NULL)
4175 h->stub_cache = stub_entry;
4176 free (stub_name);
4177 }
4178
4179 return stub_entry;
4180}
4181
4182static bfd_reloc_status_type
4183csky_final_link_relocate (reloc_howto_type *howto,
4184 bfd *input_bfd,
4185 asection *input_section,
4186 bfd_byte *contents,
4187 bfd_vma address,
4188 bfd_vma value,
4189 bfd_vma addend)
4190{
4191 bfd_vma relocation;
4192
4193 /* Sanity check the address. */
4194 if (address > bfd_get_section_limit (input_bfd, input_section))
4195 return bfd_reloc_outofrange;
4196
4197 /* This function assumes that we are dealing with a basic relocation
4198 against a symbol. We want to compute the value of the symbol to
4199 relocate to. This is just VALUE, the value of the symbol,
4200 plus ADDEND, any addend associated with the reloc. */
4201 relocation = value + addend;
4202
4203 /* If the relocation is PC relative, we want to set RELOCATION to
4204 the distance between the symbol (currently in RELOCATION) and the
4205 location we are relocating. Some targets (e.g., i386-aout)
4206 arrange for the contents of the section to be the negative of the
4207 offset of the location within the section; for such targets
4208 pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF)
4209 simply leave the contents of the section as zero; for such
4210 targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not
4211 need to subtract out the offset of the location within the
4212 section (which is just ADDRESS). */
4213 if (howto->pc_relative)
4214 {
4215 relocation -= (input_section->output_section->vma
4216 + input_section->output_offset);
4217 if (howto->pcrel_offset)
4218 relocation -= address;
4219 }
4220
4221 return csky_relocate_contents (howto, input_bfd, relocation,
4222 contents + address);
4223
4224}
4225
4226/* Return the base VMA address which should be subtracted from real addresses
4227 when resolving @dtpoff relocation.
4228 This is PT_TLS segment p_vaddr. */
4229
4230static bfd_vma
4231dtpoff_base (struct bfd_link_info *info)
4232{
4233 /* If tls_sec is NULL, we should have signalled an error already. */
4234 if (elf_hash_table (info)->tls_sec == NULL)
4235 return 0;
4236 return elf_hash_table (info)->tls_sec->vma;
4237}
4238
4239/* Return the relocation value for @tpoff relocation
4240 if STT_TLS virtual address is ADDRESS. */
4241
4242static bfd_vma
4243tpoff (struct bfd_link_info *info, bfd_vma address)
4244{
4245 struct elf_link_hash_table *htab = elf_hash_table (info);
4246 bfd_vma base;
4247
4248 /* If tls_sec is NULL, we should have signalled an error already. */
4249 if (htab->tls_sec == NULL)
4250 return 0;
4251 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
4252 return address - htab->tls_sec->vma + base;
4253}
4254
4255/* Relocate a csky section. */
4256
4257static bfd_boolean
4258csky_elf_relocate_section (bfd * output_bfd,
4259 struct bfd_link_info * info,
4260 bfd * input_bfd,
4261 asection * input_section,
4262 bfd_byte * contents,
4263 Elf_Internal_Rela * relocs,
4264 Elf_Internal_Sym * local_syms,
4265 asection ** local_sections)
4266{
4267 Elf_Internal_Shdr *symtab_hdr;
4268 struct elf_link_hash_entry **sym_hashes;
4269 Elf_Internal_Rela *rel;
4270 Elf_Internal_Rela *relend;
4271 const char *name;
4272 bfd_boolean ret = TRUE;
4273 struct csky_elf_link_hash_table * htab;
4274 bfd_vma *local_got_offsets = elf_local_got_offsets (input_bfd);
4275
4276 htab = csky_elf_hash_table (info);
4277 if (htab == NULL)
4278 return FALSE;
4279
4280 symtab_hdr = & elf_symtab_hdr (input_bfd);
4281 sym_hashes = elf_sym_hashes (input_bfd);
4282
4283 rel = relocs;
4284 relend = relocs + input_section->reloc_count;
4285 for (; rel < relend; rel++)
4286 {
4287 enum elf_csky_reloc_type r_type
4288 = (enum elf_csky_reloc_type) ELF32_R_TYPE (rel->r_info);
4289 unsigned long r_symndx;
4290 reloc_howto_type * howto;
4291 Elf_Internal_Sym * sym;
4292 asection * sec;
4293 bfd_vma relocation;
4294 bfd_vma off;
4295 struct elf_link_hash_entry * h;
4296 bfd_vma addend = (bfd_vma)rel->r_addend;
4297 bfd_reloc_status_type r = bfd_reloc_ok;
4298 bfd_boolean unresolved_reloc = FALSE;
4299 int do_final_relocate = TRUE;
4300 bfd_boolean relative_reloc = FALSE;
4301 bfd_signed_vma disp;
4302
4303 /* Ignore these relocation types:
4304 R_CKCORE_GNU_VTINHERIT, R_CKCORE_GNU_VTENTRY. */
4305 if (r_type == R_CKCORE_GNU_VTINHERIT || r_type == R_CKCORE_GNU_VTENTRY)
4306 continue;
4307
4308 if ((unsigned) r_type >= (unsigned) R_CKCORE_MAX)
4309 {
4310 /* The r_type is error, not support it. */
4311 /* xgettext:c-format */
4312 _bfd_error_handler (_("%pB: unsupported relocation type: %#x"),
4313 input_bfd, r_type);
4314 bfd_set_error (bfd_error_bad_value);
4315 ret = FALSE;
4316 continue;
4317 }
4318
4319 howto = &csky_elf_howto_table[(int) r_type];
4320
4321 r_symndx = ELF32_R_SYM(rel->r_info);
4322 h = NULL;
4323 sym = NULL;
4324 sec = NULL;
4325 unresolved_reloc = FALSE;
4326
4327 if (r_symndx < symtab_hdr->sh_info)
4328 {
4329 /* Get symbol table entry. */
4330 sym = local_syms + r_symndx;
4331 sec = local_sections[r_symndx];
4332 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4333 addend = (bfd_vma)rel->r_addend;
4334 }
4335 else
4336 {
4337 bfd_boolean warned, ignored;
4338
4339 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4340 r_symndx, symtab_hdr, sym_hashes,
4341 h, sec, relocation,
4342 unresolved_reloc, warned, ignored);
4343 }
4344
4345 if (sec != NULL && discarded_section (sec))
4346 {
4347 /* For relocs against symbols from removed linkonce sections,
4348 or sections discarded by a linker script, we just want the
4349 section contents zeroed. Avoid any special processing.
4350 And if the symbol is referenced in '.csky_stack_size' section,
4351 set the address to SEC_DISCARDED(0xffffffff). */
4352#if 0
4353 /* The .csky_stack_size section is just for callgraph. */
4354 if (strcmp (input_section->name, ".csky_stack_size") == 0)
4355 {
4356/* FIXME: it should define in head file. */
4357#define SEC_DISCARDED 0xffffffff
4358 bfd_put_32 (input_bfd, SEC_DISCARDED, contents + rel->r_offset);
4359 rel->r_info = 0;
4360 rel->r_addend = 0;
4361 continue;
4362 }
4363 else
4364#endif
4365 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
4366 rel, 1, relend, howto, 0,
4367 contents);
4368 }
4369
4370 if (bfd_link_relocatable (info))
4371 continue;
4372
4373 read_content_substitute = 0;
4374
4375 /* Final link. */
4376 disp = (relocation
4377 + (bfd_signed_vma) addend
4378 - input_section->output_section->vma
4379 - input_section->output_offset
4380 - rel->r_offset);
4381/* It is for ck8xx. */
4382#define CSKY_INSN_BSR32 0xe0000000
4383/* It is for ck5xx/ck6xx. */
4384#define CSKY_INSN_BSR16 0xf800
4385#define within_range(x, L) (-(1 << (L - 1)) < (x) && (x) < (1 << (L -1)) - 2)
4386 switch (howto->type)
4387 {
4388 case R_CKCORE_PCREL_IMM18BY2:
4389 /* When h is NULL, means the instruction written as
4390 grs rx, imm32
4391 if the highest bit is set, prevent the high 32bits
4392 turn to 0xffffffff when signed extern in 64bit
4393 host machine. */
4394 if (h == NULL && (addend & 0x80000000))
4395 addend &= 0xffffffff;
4396 break;
fe75f42e
LX		 4397
4398 case R_CKCORE_PCREL32:
4399 break;
4400
b8891f8d
AJ		 4401 case R_CKCORE_GOT12:
4402 case R_CKCORE_PLT12:
4403 case R_CKCORE_GOT_HI16:
4404 case R_CKCORE_GOT_LO16:
4405 case R_CKCORE_PLT_HI16:
4406 case R_CKCORE_PLT_LO16:
4407 case R_CKCORE_GOT32:
4408 case R_CKCORE_GOT_IMM18BY4:
4409 /* Relocation is to the entry for this symbol in the global
4410 offset table. */
4411 BFD_ASSERT (htab->elf.sgot != NULL);
4412 if (h != NULL)
4413 {
4414 /* Global symbol is defined by other modules. */
4415 bfd_boolean dyn;
4416 off = h->got.offset;
4417 dyn = htab->elf.dynamic_sections_created;
4418 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4419 bfd_link_pic (info), h)
4420 || (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info,h))
4421 || (ELF_ST_VISIBILITY(h->other)
4422 && h->root.type == bfd_link_hash_undefweak))
4423 {
4424 /* This is actually a static link, or it is a
4425 -Bsymbolic link and the symbol is defined
4426 locally, or the symbol was forced to be local
4427 because of a version file. We must initialize
4428 this entry in the global offset table. Since the
4429 offset must always be a multiple of 4, we use the
4430 least significant bit to record whether we have
4431 initialized it already.
4432 When doing a dynamic link, we create a .rela.dyn
4433 relocation entry to initialize the value. This
4434 is done in the finish_dynamic_symbol routine. FIXME */
4435 if (off & 1)
4436 off &= ~1;
4437 else
4438 {
4439 bfd_put_32 (output_bfd, relocation,
4440 htab->elf.sgot->contents + off);
4441 h->got.offset |= 1;
4442
4443/* TRUE if relative relocation should be generated. GOT reference to
4444 global symbol in PIC will lead to dynamic symbol. It becomes a
4445 problem when "time" or "times" is defined as a variable in an
4446 executable, clashing with functions of the same name in libc. If a
4447 symbol isn't undefined weak symbol, don't make it dynamic in PIC and
4448 generate relative relocation. */
4449#define GENERATE_RELATIVE_RELOC_P(INFO, H) \
4450 ((H)->dynindx == -1 \
4451 && !(H)->forced_local \
4452 && (H)->root.type != bfd_link_hash_undefweak \
4453 && bfd_link_pic (INFO))
4454
4455 if (GENERATE_RELATIVE_RELOC_P (info, h))
4456 /* If this symbol isn't dynamic
4457 in PIC, generate R_CKCORE_RELATIVE here. */
4458 relative_reloc = TRUE;
4459 }
4460 }
4461 else
4462 unresolved_reloc = FALSE;
4463 } /* End if h != NULL. */
4464 else
4465 {
4466 BFD_ASSERT (local_got_offsets != NULL);
4467 off = local_got_offsets[r_symndx];
4468
4469 /* The offset must always be a multiple of 4. We use
4470 the least significant bit to record whether we have
4471 already generated the necessary reloc. */
4472 if (off & 1)
4473 off &= ~1;
4474 else
4475 {
4476 bfd_put_32 (output_bfd, relocation,
4477 htab->elf.sgot->contents + off);
4478 local_got_offsets[r_symndx] |= 1;
4479 if (bfd_link_pic (info))
4480 relative_reloc = TRUE;
4481 }
4482 }
4483 if (relative_reloc)
4484 {
4485 asection *srelgot;
4486 Elf_Internal_Rela outrel;
4487 bfd_byte *loc;
4488
4489 srelgot = htab->elf.srelgot;
4490 BFD_ASSERT (srelgot != NULL);
4491
4492 outrel.r_offset
4493 = (htab->elf.sgot->output_section->vma
4494 + htab->elf.sgot->output_offset + off);
4495 outrel.r_info = ELF32_R_INFO (0, R_CKCORE_RELATIVE);
4496 outrel.r_addend = relocation;
4497 loc = srelgot->contents;
4498 loc += (srelgot->reloc_count++ * sizeof (Elf32_External_Rela));
4499 if (loc != NULL)
4500 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4501 }
4502 relocation = htab->elf.sgot->output_offset + off;
4503 break;
4504
4505 case R_CKCORE_GOTOFF_IMM18:
4506 case R_CKCORE_GOTOFF:
4507 case R_CKCORE_GOTOFF_HI16:
4508 case R_CKCORE_GOTOFF_LO16:
4509 /* Relocation is relative to the start of the global offset
4510 table. */
4511 /* Note that sgot->output_offset is not involved in this
4512 calculation. We always want the start of .got. If we
4513 defined _GLOBAL_OFFSET_TABLE in a different way, as is
4514 permitted by the ABI, we might have to change this
4515 calculation. */
4516 relocation -= htab->elf.sgot->output_section->vma;
4517 break;
4518
4519 case R_CKCORE_GOTPC:
4520 case R_CKCORE_GOTPC_HI16:
4521 case R_CKCORE_GOTPC_LO16:
4522 /* Use global offset table as symbol value. */
4523 relocation = htab->elf.sgot->output_section->vma;
4524 addend = -addend;
4525 unresolved_reloc = FALSE;
4526 break;
4527
4528 case R_CKCORE_DOFFSET_IMM18:
4529 case R_CKCORE_DOFFSET_IMM18BY2:
4530 case R_CKCORE_DOFFSET_IMM18BY4:
4531 {
4532 asection *sdata = bfd_get_section_by_name (output_bfd, ".data");
4533 relocation -= sdata->output_section->vma;
4534 }
4535 break;
4536
4537 case R_CKCORE_DOFFSET_LO16:
4538 {
4539 asection *sdata = bfd_get_section_by_name (output_bfd, ".data");
4540 relocation -= sdata->output_section->vma;
4541 }
4542 break;
4543
4544 case R_CKCORE_TOFFSET_LO16:
4545 {
4546 asection *stext = bfd_get_section_by_name (output_bfd, ".text");
4547 if (stext)
4548 relocation -= stext->output_section->vma;
4549 }
4550 break;
4551
4552 case R_CKCORE_PLT_IMM18BY4:
4553 case R_CKCORE_PLT32:
4554 /* Relocation is to the entry for this symbol in the
4555 procedure linkage table. */
4556
4557 /* Resolve a PLT32 reloc against a local symbol directly,
4558 without using the procedure linkage table. */
4559 if (h == NULL)
4560 break;
4561
4562 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
4563 {
4564 /* We didn't make a PLT entry for this symbol. This
4565 happens when statically linking PIC code, or when
4566 using -Bsymbolic. */
4567 if (h->got.offset != (bfd_vma) -1)
4568 {
4569 bfd_boolean dyn;
4570
4571 off = h->got.offset;
4572 dyn = htab->elf.dynamic_sections_created;
4573 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4574 bfd_link_pic (info), h)
4575 || (bfd_link_pic (info)
4576 && SYMBOL_REFERENCES_LOCAL (info, h))
4577 || (ELF_ST_VISIBILITY (h->other)
4578 && h->root.type == bfd_link_hash_undefweak))
4579 {
4580 /* This is actually a static link, or it is a
4581 -Bsymbolic link and the symbol is defined
4582 locally, or the symbol was forced to be local
4583 because of a version file. We must initialize
4584 this entry in the global offset table. Since the
4585 offset must always be a multiple of 4, we use the
4586 least significant bit to record whether we have
4587 initialized it already.
4588
4589 When doing a dynamic link, we create a .rela.dyn
4590 relocation entry to initialize the value. This
4591 is done in the finish_dynamic_symbol routine.
4592 FIXME! */
4593 if (off & 1)
4594 off &= ~1;
4595 else
4596 {
4597 h->got.offset |= 1;
4598 if (GENERATE_RELATIVE_RELOC_P (info, h))
4b24dd1a 4599 relative_reloc = TRUE;
b8891f8d
AJ		 4600 }
4601 }
4602 bfd_put_32 (output_bfd, relocation,
4603 htab->elf.sgot->contents + off);
4604
4605 if (relative_reloc)
4606 {
4607 asection *srelgot;
4608 Elf_Internal_Rela outrel;
4609 bfd_byte *loc;
4610
4611 srelgot = htab->elf.srelgot;
4612 BFD_ASSERT (srelgot != NULL);
4613
4614 outrel.r_offset
4615 = (htab->elf.sgot->output_section->vma
4616 + htab->elf.sgot->output_offset + off);
4617 outrel.r_info = ELF32_R_INFO (0, R_CKCORE_RELATIVE);
4618 outrel.r_addend = relocation;
4619 loc = srelgot->contents;
4620 loc += (srelgot->reloc_count++
4621 * sizeof (Elf32_External_Rela));
4622 if (loc != NULL)
4623 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4624 }
4625 relocation = off + htab->elf.sgot->output_offset;
4626 }
4627 break;
4628 }
4629 /* The relocation is the got offset. */
4630 if (bfd_csky_abi (output_bfd) == CSKY_ABI_V2)
4631 relocation = (h->plt.offset / PLT_ENTRY_SIZE + 2) * 4;
4632 else
4633 relocation = (h->plt.offset / PLT_ENTRY_SIZE_P + 2) * 4;
4634 unresolved_reloc = FALSE;
4635 break;
4636
4637 case R_CKCORE_PCREL_IMM26BY2:
4638 case R_CKCORE_PCREL_JSR_IMM26BY2:
4639 case R_CKCORE_PCREL_JSR_IMM11BY2:
4640 case R_CKCORE_PCREL_IMM11BY2:
4641 case R_CKCORE_CALLGRAPH:
4642 /* Emit callgraph information first. */
4643 /* TODO: deal with callgraph. */
4644 if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_CALLGRAPH)
4645 break;
4646 /* Some reloc need further handling. */
4647 /* h == NULL means the symbol is a local symbol,
4648 r_symndx == 0 means the symbol is 'ABS' and
4649 the relocation is already handled in assemble,
4650 here just use for callgraph. */
4651 /* TODO: deal with callgraph. */
4652 if (h == NULL && r_symndx == 0)
4653 {
4654 do_final_relocate = FALSE;
4655 break;
4656 }
4657
4658 /* Ignore weak references to undefined symbols. */
4659 if (h != NULL && h->root.type == bfd_link_hash_undefweak)
4660 {
4661 do_final_relocate = FALSE;
4662 break;
4663 }
4664
4665 /* Using branch stub. */
4666 if (use_branch_stub == TRUE
4667 && ELF32_R_TYPE (rel->r_info) == R_CKCORE_PCREL_IMM26BY2)
4668 {
4669 struct elf32_csky_stub_hash_entry *stub_entry = NULL;
4670 if (sym_must_create_stub (h, info))
4671 stub_entry = elf32_csky_get_stub_entry (input_section,
4672 input_section,
4673 h, rel, htab);
4674 else if (disp > BSR_MAX_FWD_BRANCH_OFFSET
4675 || disp < BSR_MAX_BWD_BRANCH_OFFSET)
4676 stub_entry = elf32_csky_get_stub_entry (input_section,
4677 input_section,
4678 h, rel, htab);
4679 if (stub_entry != NULL)
4680 relocation
4681 = (stub_entry->stub_offset
4682 + stub_entry->stub_sec->output_offset
4683 + stub_entry->stub_sec->output_section->vma);
4684 break;
4685 }
4686
4687 else if (h == NULL
4688 || (h->root.type == bfd_link_hash_defined
4689 && h->dynindx == -1)
4690 || ((h->def_regular && !h->def_dynamic)
4691 && (h->root.type != bfd_link_hash_defweak
4692 || ! bfd_link_pic (info))))
4693 {
4694 if (ELF32_R_TYPE (rel->r_info) == R_CKCORE_PCREL_JSR_IMM26BY2)
4695 {
4696 if (within_range (disp, 26))
4697 {
4698 /* In range for BSR32. */
4699 howto = &csky_elf_howto_table[R_CKCORE_PCREL_IMM26BY2];
4700 read_content_substitute = CSKY_INSN_BSR32;
4701 }
4702 else if (bfd_csky_arch (output_bfd) == CSKY_ARCH_810)
4703 /* if bsr32 cannot reach, generate
4704 "lrw r25, label; jsr r25" instead of
4705 jsri label. */
4706 howto = &csky_elf_howto_table[R_CKCORE_NOJSRI];
4707 } /* if ELF32_R_TYPE (rel->r_info)... */
4708 else if (ELF32_R_TYPE (rel->r_info)
4709 == R_CKCORE_PCREL_JSR_IMM11BY2)
4710 {
4711 if (within_range (disp, 11))
4712 {
4713 /* In range for BSR16. */
4714 howto = &csky_elf_howto_table[R_CKCORE_PCREL_IMM11BY2];
4715 read_content_substitute = CSKY_INSN_BSR16;
4716 }
4717 }
4718 break;
4719 } /* else if h == NULL... */
4720
4721 else if (bfd_csky_arch (output_bfd) == CSKY_ARCH_810
4722 && (ELF32_R_TYPE (rel->r_info)
4723 == R_CKCORE_PCREL_JSR_IMM26BY2))
4724 {
4725 howto = &csky_elf_howto_table[R_CKCORE_NOJSRI];
4726 break;
4727 }
4728 /* Other situation, h->def_dynamic == 1,
4729 undefined_symbol when output file is shared object, etc. */
4730 /* Else fall through. */
4731
4732 case R_CKCORE_ADDR_HI16:
4733 case R_CKCORE_ADDR_LO16:
4734 if (bfd_link_pic (info)
4735 || (!bfd_link_pic (info)
4736 && h != NULL
4737 && h->dynindx != -1
4738 && !h->non_got_ref
4739 && ((h->def_dynamic && !h->def_regular)
4740 || (htab->elf.dynamic_sections_created
4741 && (h->root.type == bfd_link_hash_undefweak
4742 || h->root.type == bfd_link_hash_undefined
4743 || h->root.type == bfd_link_hash_indirect)))))
4744 {
4745 Elf_Internal_Rela outrel;
4746 bfd_boolean skip, relocate;
4747 bfd_byte *loc;
4748
4749 /* When generating a shared object, these relocations
4750 are copied into the output file to be resolved at
4751 run time. */
4752 skip = FALSE;
4753 relocate = FALSE;
4754
4755 outrel.r_offset =
4756 _bfd_elf_section_offset (output_bfd, info, input_section,
4757 rel->r_offset);
4758 if (outrel.r_offset == (bfd_vma) -1)
4759 skip = TRUE;
4760 else if (outrel.r_offset == (bfd_vma) -2)
4761 {
4762 skip = TRUE;
4763 relocate = TRUE;
4764 }
4765 outrel.r_offset += (input_section->output_section->vma
4766 + input_section->output_offset);
4767 if (skip)
4768 memset (&outrel, 0, sizeof (outrel));
4769 else if (h != NULL
4770 && h->dynindx != -1
4771 && (!bfd_link_pic (info)
4772 || (!SYMBOLIC_BIND (info, h)
4773 && h->root.type == bfd_link_hash_defweak)
4774 || !h->def_regular))
4775 {
4776 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4777 outrel.r_addend = rel->r_addend;
4778 }
4779 else
4780 {
4781 /* This symbol is local, or marked to become local. */
4782 relocate = TRUE;
4783 outrel.r_info = ELF32_R_INFO (0, r_type);
4784 outrel.r_addend = relocation + rel->r_addend;
4785 }
4786 loc = htab->elf.srelgot->contents;
4787 loc += (htab->elf.srelgot->reloc_count++
4788 * sizeof (Elf32_External_Rela));
4789
4790 if (loc != NULL)
4791 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4792
4793 /* If this reloc is against an external symbol, we do not
4794 want to diddle with the addend. Otherwise, we need to
4795 include the symbol value so that it becomes an addend
4796 for the dynamic reloc. */
4797 if (!relocate)
4798 continue;
4799 } /* if bfd_link_pic (info) ... */
4800 break;
4801
4802 case R_CKCORE_ADDR32:
4803 /* r_symndx will be zero only for relocs against symbols
4804 from removed linkonce sections, or sections discarded
4805 by a linker script.
4806 This relocation don't nedd to handle, the value will
4807 be set to SEC_DISCARDED(0xffffffff). */
4808 if (r_symndx == 0
4809 && strcmp (sec->name, ".csky_stack_size") == 0)
4810 {
4811 do_final_relocate = FALSE;
4812 break;
4813 }
4814 if (r_symndx >= symtab_hdr->sh_info
4815 && h->non_got_ref
4816 && bfd_link_executable (info))
4817 break;
4818
4819 if (r_symndx == 0 || (input_section->flags & SEC_ALLOC) == 0)
4820 break;
4821
4822 if (bfd_link_pic (info)
4823 || (h != NULL
4824 && h->dynindx != -1
4825 && ((h->def_dynamic && !h->def_regular)
4826 || (htab->elf.dynamic_sections_created
4827 && (h->root.type == bfd_link_hash_undefweak
4828 || h->root.type == bfd_link_hash_undefined
4829 || h->root.type == bfd_link_hash_indirect)))))
4830 {
4831 Elf_Internal_Rela outrel;
4832 bfd_boolean skip, relocate;
4833 bfd_byte *loc;
4834
4835 /* When generating a shared object, these relocations
4836 are copied into the output file to be resolved at
4837 run time. */
4838 skip = FALSE;
4839 relocate = FALSE;
4840
4841 outrel.r_offset =
4842 _bfd_elf_section_offset (output_bfd, info, input_section,
4843 rel->r_offset);
4844
4845 if (outrel.r_offset == (bfd_vma) -1)
4846 skip = TRUE;
4847 else if (outrel.r_offset == (bfd_vma) -2)
4848 {
4849 skip = TRUE;
4850 relocate = TRUE;
4851 }
4852
4853 outrel.r_offset += (input_section->output_section->vma
4854 + input_section->output_offset);
4855
4856 if (skip)
4857 memset (&outrel, 0, sizeof (outrel));
4858 else if (h != NULL
4859 && h->dynindx != -1
4860 && (!bfd_link_pic (info)
4861 || (!SYMBOLIC_BIND (info, h)
4862 && h->root.type == bfd_link_hash_defweak)
4863 || !h->def_regular))
4864 {
4865 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4866 outrel.r_addend = rel->r_addend;
4867 }
4868 else
4869 {
4870 /* This symbol is local, or marked to become local. */
4871 outrel.r_info = ELF32_R_INFO (0, R_CKCORE_RELATIVE);
4872 outrel.r_addend = relocation + rel->r_addend;
4873 }
4874
4875 loc = htab->elf.srelgot->contents;
4876 loc += (htab->elf.srelgot->reloc_count++
4877 * sizeof (Elf32_External_Rela));
4878
4879 if (loc != NULL)
4880 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4881
4882 /* If this reloc is against an external symbol, we do
4883 want to diddle with the addend. Otherwise, we need to
4884 include the symbol value so that it becomes an addend
4885 for the dynamic reloc. */
4886 if (! relocate)
4887 continue;
4888 }
4889 break;
4890
4891 case R_CKCORE_TLS_LDO32:
4892 relocation = relocation - dtpoff_base (info);
4893 break;
4894
4895 case R_CKCORE_TLS_LDM32:
4896 BFD_ASSERT (htab->elf.sgot != NULL);
4897 off = htab->tls_ldm_got.offset;
4898 if (off & 1)
4899 off &= ~1;
4900 else
4901 {
4902 /* If we don't know the module number,
4903 create a relocation for it. */
4904 if (!bfd_link_executable (info))
4905 {
4906 Elf_Internal_Rela outrel;
4907 bfd_byte *loc;
4908
4909 BFD_ASSERT (htab->elf.srelgot != NULL);
4910 outrel.r_addend = 0;
4911 outrel.r_offset
4912 = (htab->elf.sgot->output_section->vma
4913 + htab->elf.sgot->output_offset + off);
4914 outrel.r_info = ELF32_R_INFO (0, R_CKCORE_TLS_DTPMOD32);
4915 bfd_put_32 (output_bfd, outrel.r_addend,
4916 htab->elf.sgot->contents + off);
4917
4918 loc = htab->elf.srelgot->contents;
4919 loc += (htab->elf.srelgot->reloc_count++
4920 * sizeof (Elf32_External_Rela));
4921 if (loc)
4922 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4923 }
4924 else
4925 bfd_put_32 (output_bfd, 1,
4926 htab->elf.sgot->contents + off);
4927 htab->tls_ldm_got.offset |= 1;
4928 }
4929 relocation
4930 = (htab->elf.sgot->output_section->vma
4931 + htab->elf.sgot->output_offset + off
4932 - (input_section->output_section->vma
4933 + input_section->output_offset + rel->r_offset));
4934 break;
4935 case R_CKCORE_TLS_LE32:
4936 if (bfd_link_dll (info))
4937 {
4938 _bfd_error_handler
4939 /* xgettext:c-format */
4940 (_("%pB(%pA+%#" PRIx64 "): %s relocation not permitted "
4941 "in shared object"),
4942 input_bfd, input_section, (uint64_t)rel->r_offset,
4943 howto->name);
4944 return FALSE;
4945 }
4946 else
4947 relocation = tpoff (info, relocation);
4948 break;
4949 case R_CKCORE_TLS_GD32:
4950 case R_CKCORE_TLS_IE32:
4951 {
4952 int indx;
4953 char tls_type;
4954
4955 BFD_ASSERT (htab->elf.sgot != NULL);
4956
4957 indx = 0;
4958 if (h != NULL)
4959 {
4960 bfd_boolean dyn;
4961 dyn = htab->elf.dynamic_sections_created;
4962 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4963 bfd_link_pic (info), h)
4964 && (!bfd_link_pic (info)
4965 || !SYMBOL_REFERENCES_LOCAL (info, h)))
4966 {
4967 unresolved_reloc = FALSE;
4968 indx = h->dynindx;
4969 }
4970 off = h->got.offset;
4971 tls_type = ((struct csky_elf_link_hash_entry *)h)->tls_type;
4972 }
4973 else
4974 {
4975 BFD_ASSERT (local_got_offsets != NULL);
4976 off = local_got_offsets[r_symndx];
4977 tls_type = csky_elf_local_got_tls_type (input_bfd)[r_symndx];
4978 }
4979
4980 BFD_ASSERT (tls_type != GOT_UNKNOWN);
4981
4982 if (off & 1)
4983 off &= ~1;
4984 else
4985 {
4986 bfd_boolean need_relocs = FALSE;
4987 Elf_Internal_Rela outrel;
4988 bfd_byte *loc = NULL;
4989 int cur_off = off;
4990 /* The GOT entries have not been initialized yet. Do it
4991 now, and emit any relocations. If both an IE GOT and a
4992 GD GOT are necessary, we emit the GD first. */
4993 if ((!bfd_link_executable (info) || indx != 0)
4994 && (h == NULL
4995 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4996 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
4997 || h->root.type != bfd_link_hash_undefined))
4998 {
4999 need_relocs = TRUE;
5000 BFD_ASSERT (htab->elf.srelgot != NULL);
5001
5002 loc = htab->elf.srelgot->contents;
5003 loc += (htab->elf.srelgot->reloc_count
5004 * sizeof (Elf32_External_Rela));
5005 }
5006 if (tls_type & GOT_TLS_GD)
5007 {
5008 if (need_relocs)
5009 {
5010 outrel.r_addend = 0;
5011 outrel.r_offset
5012 = (htab->elf.sgot->output_section->vma
5013 + htab->elf.sgot->output_offset
5014 + cur_off);
5015 outrel.r_info
5016 = ELF32_R_INFO (indx, R_CKCORE_TLS_DTPMOD32);
5017 bfd_put_32 (output_bfd, outrel.r_addend,
5018 htab->elf.sgot->contents + cur_off);
5019 if (loc)
5020 bfd_elf32_swap_reloca_out (output_bfd,
5021 &outrel, loc);
5022 loc += sizeof (Elf32_External_Rela);
5023 htab->elf.srelgot->reloc_count++;
5024 if (indx == 0)
5025 bfd_put_32 (output_bfd,
5026 relocation - dtpoff_base (info),
5027 (htab->elf.sgot->contents
5028 + cur_off + 4));
5029 else
5030 {
5031 outrel.r_addend = 0;
5032 outrel.r_info
5033 = ELF32_R_INFO (indx, R_CKCORE_TLS_DTPOFF32);
5034 outrel.r_offset += 4;
5035 bfd_put_32 (output_bfd, outrel.r_addend,
5036 (htab->elf.sgot->contents
5037 + cur_off + 4));
5038 outrel.r_info =
5039 ELF32_R_INFO (indx,
5040 R_CKCORE_TLS_DTPOFF32);
5041 if (loc)
5042 bfd_elf32_swap_reloca_out (output_bfd,
5043 &outrel,
5044 loc);
5045 htab->elf.srelgot->reloc_count++;
5046 loc += sizeof (Elf32_External_Rela);
5047 }
5048
5049 }
5050 else
5051 {
5052 /* If are not emitting relocations for a
5053 general dynamic reference, then we must be in a
5054 static link or an executable link with the
5055 symbol binding locally. Mark it as belonging
5056 to module 1, the executable. */
5057 bfd_put_32 (output_bfd, 1,
5058 htab->elf.sgot->contents + cur_off);
5059 bfd_put_32 (output_bfd,
5060 relocation - dtpoff_base (info),
5061 htab->elf.sgot->contents
5062 + cur_off + 4);
5063 }
5064 cur_off += 8;
5065 }
5066 if (tls_type & GOT_TLS_IE)
5067 {
5068 if (need_relocs)
5069 {
5070 if (indx == 0)
5071 outrel.r_addend = relocation - dtpoff_base (info);
5072 else
5073 outrel.r_addend = 0;
5074 outrel.r_offset
5075 = (htab->elf.sgot->output_section->vma
5076 + htab->elf.sgot->output_offset + cur_off);
5077 outrel.r_info
5078 = ELF32_R_INFO (indx, R_CKCORE_TLS_TPOFF32);
5079
5080 bfd_put_32 (output_bfd, outrel.r_addend,
5081 htab->elf.sgot->contents + cur_off);
5082 if (loc)
5083 bfd_elf32_swap_reloca_out (output_bfd,
5084 &outrel, loc);
5085 htab->elf.srelgot->reloc_count++;
5086 loc += sizeof (Elf32_External_Rela);
5087 }
5088 else
5089 bfd_put_32 (output_bfd, tpoff (info, relocation),
5090 htab->elf.sgot->contents + cur_off);
5091 }
5092 if (h != NULL)
5093 h->got.offset |= 1;
5094 else
5095 local_got_offsets[r_symndx] |= 1;
5096 }
5097 if ((tls_type & GOT_TLS_GD) && howto->type != R_CKCORE_TLS_GD32)
5098 off += 8;
5099 relocation
5100 = (htab->elf.sgot->output_section->vma
5101 + htab->elf.sgot->output_offset + off
5102 - (input_section->output_section->vma
5103 + input_section->output_offset
5104 + rel->r_offset));
5105 break;
5106 }
5107 default:
5108 /* No substitution when final linking. */
5109 read_content_substitute = 0;
5110 break;
5111 } /* End switch (howto->type). */
5112
5113 /* Make sure 32-bit data in the text section will not be affected by
5114 our special endianness.
5115 However, this currently affects noting, since the ADDR32 howto type
5116 does no change with the data read. But we may need this mechanism in
5117 the future. */
5118
5119 if (howto->size == 2
5120 && (howto->type == R_CKCORE_ADDR32
fe75f42e 5121 || howto->type == R_CKCORE_PCREL32
b8891f8d
AJ		 5122 || howto->type == R_CKCORE_GOT32
5123 || howto->type == R_CKCORE_GOTOFF
5124 || howto->type == R_CKCORE_GOTPC
5125 || howto->type == R_CKCORE_PLT32
5126 || howto->type == R_CKCORE_TLS_LE32
5127 || howto->type == R_CKCORE_TLS_IE32
5128 || howto->type == R_CKCORE_TLS_LDM32
5129 || howto->type == R_CKCORE_TLS_GD32
5130 || howto->type == R_CKCORE_TLS_LDO32
5131 || howto->type == R_CKCORE_RELATIVE))
5132 need_reverse_bits = 0;
5133 else
5134 need_reverse_bits = 1;
5135 /* Do the final link. */
5136 if (howto->type != R_CKCORE_PCREL_JSR_IMM11BY2
5137 && howto->type != R_CKCORE_PCREL_JSR_IMM26BY2
5138 && howto->type != R_CKCORE_CALLGRAPH
5139 && do_final_relocate)
5140 r = csky_final_link_relocate (howto, input_bfd, input_section,
5141 contents, rel->r_offset,
5142 relocation, addend);
5143
5144 if (r != bfd_reloc_ok)
5145 {
5146 ret = FALSE;
5147 switch (r)
5148 {
5149 default:
5150 break;
5151 case bfd_reloc_overflow:
5152 if (h != NULL)
5153 name = NULL;
5154 else
5155 {
5156 name = bfd_elf_string_from_elf_section (input_bfd,
5157 symtab_hdr->sh_link,
5158 sym->st_name);
5159 if (name == NULL)
5160 break;
5161 if (*name == '\0')
fd361982 5162 name = bfd_section_name (sec);
b8891f8d
AJ		 5163 }
5164 (*info->callbacks->reloc_overflow)
5165 (info,
5166 (h ? &h->root : NULL),
5167 name, howto->name, (bfd_vma) 0,
5168 input_bfd, input_section, rel->r_offset);
5169 break;
5170 }
5171 }
5172 } /* End for (;rel < relend; rel++). */
5173 return ret;
5174}
5175
5176static bfd_boolean
5177csky_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
5178{
5179 int offset;
5180 size_t size;
5181
5182 switch (note->descsz)
5183 {
5184 default:
5185 return FALSE;
5186 /* Sizeof (struct elf_prstatus) on C-SKY V1 arch. */
5187 case 148:
5188 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
5189 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
5190 offset = 72;
5191 size = 72;
5192 break;
5193 /* Sizeof (struct elf_prstatus) on C-SKY V1 arch. */
5194 case 220:
5195 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
5196 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
5197 offset = 72;
5198 size = 34 * 4;
5199 break;
5200 }
5201 /* Make a ".reg/999" section. */
5202 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5203 size, note->descpos + offset);
5204}
5205
5206static bfd_boolean
5207csky_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
5208{
5209 switch (note->descsz)
5210 {
5211 default:
5212 return FALSE;
5213
5214 /* Sizeof (struct elf_prpsinfo) on linux csky. */
5215 case 124:
5216 elf_tdata (abfd)->core->program
5217 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
5218 elf_tdata (abfd)->core->command
5219 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
5220 }
5221
5222 /* Note that for some reason, a spurious space is tacked
5223 onto the end of the args in some (at least one anyway)
5224 implementations, so strip it off if it exists. */
5225 {
5226 char *command = elf_tdata (abfd)->core->command;
5227 int n = strlen (command);
5228
5229 if (0 < n && command[n - 1] == ' ')
5230 command[n - 1] = '\0';
5231 }
5232
5233 return TRUE;
5234}
5235
0861f561
CQ		 5236/* Determine whether an object attribute tag takes an integer, a
5237 string or both. */
5238
5239static int
5240elf32_csky_obj_attrs_arg_type (int tag)
5241{
5242 switch (tag)
5243 {
5244 case Tag_compatibility:
5245 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
5246 case Tag_CSKY_ARCH_NAME:
5247 case Tag_CSKY_CPU_NAME:
5248 case Tag_CSKY_FPU_NUMBER_MODULE:
5249 return ATTR_TYPE_FLAG_STR_VAL;
5250 case Tag_CSKY_ISA_FLAGS:
5251 case Tag_CSKY_ISA_EXT_FLAGS:
5252 case Tag_CSKY_DSP_VERSION:
5253 case Tag_CSKY_VDSP_VERSION:
5254 case Tag_CSKY_FPU_VERSION:
5255 case Tag_CSKY_FPU_ABI:
5256 case Tag_CSKY_FPU_ROUNDING:
5257 case Tag_CSKY_FPU_HARDFP:
5258 case Tag_CSKY_FPU_Exception:
5259 case Tag_CSKY_FPU_DENORMAL:
5260 return ATTR_TYPE_FLAG_INT_VAL;
5261 default:
5262 break;
5263 }
5264
5265 return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
5266}
5267
5268/* Attribute numbers >=64 (mod 128) can be safely ignored. */
5269
5270static bfd_boolean
5271elf32_csky_obj_attrs_handle_unknown (bfd *abfd ATTRIBUTE_UNUSED,
5272 int tag ATTRIBUTE_UNUSED)
5273{
5274 return TRUE;
5275}
5276
b8891f8d
AJ		 5277/* End of external entry points for sizing and building linker stubs. */
5278
5279/* CPU-related basic API. */
5280#define TARGET_BIG_SYM csky_elf32_be_vec
5281#define TARGET_BIG_NAME "elf32-csky-big"
5282#define TARGET_LITTLE_SYM csky_elf32_le_vec
5283#define TARGET_LITTLE_NAME "elf32-csky-little"
5284#define ELF_ARCH bfd_arch_csky
5285#define ELF_MACHINE_CODE EM_CSKY
5286#define ELF_MACHINE_ALT1 EM_CSKY_OLD
5287#define ELF_MAXPAGESIZE 0x1000
5288#define elf_info_to_howto csky_elf_info_to_howto
5289#define elf_info_to_howto_rel NULL
5290#define elf_backend_special_sections csky_elf_special_sections
5291#define bfd_elf32_bfd_link_hash_table_create csky_elf_link_hash_table_create
5292
5293/* Target related API. */
5294#define bfd_elf32_mkobject csky_elf_mkobject
5295#define bfd_elf32_bfd_merge_private_bfd_data csky_elf_merge_private_bfd_data
5296#define bfd_elf32_bfd_set_private_flags csky_elf_set_private_flags
5297#define elf_backend_copy_indirect_symbol csky_elf_copy_indirect_symbol
5298
5299/* GC section related API. */
5300#define elf_backend_can_gc_sections 1
5301#define elf_backend_gc_mark_hook csky_elf_gc_mark_hook
5302#define elf_backend_gc_mark_extra_sections elf32_csky_gc_mark_extra_sections
5303
5304/* Relocation related API. */
5305#define elf_backend_reloc_type_class csky_elf_reloc_type_class
5306#define bfd_elf32_bfd_reloc_type_lookup csky_elf_reloc_type_lookup
5307#define bfd_elf32_bfd_reloc_name_lookup csky_elf_reloc_name_lookup
5308#define elf_backend_ignore_discarded_relocs csky_elf_ignore_discarded_relocs
5309#define elf_backend_relocate_section csky_elf_relocate_section
5310#define elf_backend_check_relocs csky_elf_check_relocs
5311
5312/* Dynamic relocate related API. */
5313#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
5314#define elf_backend_adjust_dynamic_symbol csky_elf_adjust_dynamic_symbol
5315#define elf_backend_size_dynamic_sections csky_elf_size_dynamic_sections
5316#define elf_backend_finish_dynamic_symbol csky_elf_finish_dynamic_symbol
5317#define elf_backend_finish_dynamic_sections csky_elf_finish_dynamic_sections
5318#define elf_backend_rela_normal 1
5319#define elf_backend_can_refcount 1
5320#define elf_backend_plt_readonly 1
5321#define elf_backend_want_got_sym 1
5322#define elf_backend_want_dynrelro 1
5323#define elf_backend_got_header_size 12
5324#define elf_backend_want_got_plt 1
5325
5326/* C-SKY coredump support. */
5327#define elf_backend_grok_prstatus csky_elf_grok_prstatus
5328#define elf_backend_grok_psinfo csky_elf_grok_psinfo
5329
0861f561
CQ		 5330/* Attribute sections. */
5331#undef elf_backend_obj_attrs_vendor
5332#define elf_backend_obj_attrs_vendor "csky"
5333#undef elf_backend_obj_attrs_section
5334#define elf_backend_obj_attrs_section ".csky.attributes"
5335#undef elf_backend_obj_attrs_arg_type
5336#define elf_backend_obj_attrs_arg_type elf32_csky_obj_attrs_arg_type
5337#undef elf_backend_obj_attrs_section_type
5338#define elf_backend_obj_attrs_section_type SHT_CSKY_ATTRIBUTES
5339#define elf_backend_obj_attrs_handle_unknown elf32_csky_obj_attrs_handle_unknown
5340
b8891f8d 5341#include "elf32-target.h"
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