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36591ba1 | 1 | /* 32-bit ELF support for Nios II. |
b3adc24a | 2 | Copyright (C) 2012-2020 Free Software Foundation, Inc. |
36591ba1 SL |
3 | Contributed by Nigel Gray (ngray@altera.com). |
4 | Contributed by Mentor Graphics, Inc. | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | MA 02110-1301, USA. */ | |
22 | ||
23 | /* This file handles Altera Nios II ELF targets. */ | |
24 | ||
25 | #include "sysdep.h" | |
26 | #include "bfd.h" | |
27 | #include "libbfd.h" | |
28 | #include "bfdlink.h" | |
29 | #include "genlink.h" | |
30 | #include "elf-bfd.h" | |
31 | #include "elf/nios2.h" | |
32 | #include "opcode/nios2.h" | |
78058a5e | 33 | #include "elf32-nios2.h" |
f3185997 | 34 | #include "libiberty.h" |
36591ba1 SL |
35 | |
36 | /* Use RELA relocations. */ | |
37 | #ifndef USE_RELA | |
38 | #define USE_RELA | |
39 | #endif | |
40 | ||
41 | #ifdef USE_REL | |
42 | #undef USE_REL | |
43 | #endif | |
44 | ||
45 | /* Forward declarations. */ | |
46 | static bfd_reloc_status_type nios2_elf32_ignore_reloc | |
47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
48 | static bfd_reloc_status_type nios2_elf32_hi16_relocate | |
49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
50 | static bfd_reloc_status_type nios2_elf32_lo16_relocate | |
51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
52 | static bfd_reloc_status_type nios2_elf32_hiadj16_relocate | |
53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
54 | static bfd_reloc_status_type nios2_elf32_pcrel_lo16_relocate | |
55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
56 | static bfd_reloc_status_type nios2_elf32_pcrel_hiadj16_relocate | |
57 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
58 | static bfd_reloc_status_type nios2_elf32_pcrel16_relocate | |
59 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
60 | static bfd_reloc_status_type nios2_elf32_call26_relocate | |
61 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
62 | static bfd_reloc_status_type nios2_elf32_gprel_relocate | |
63 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
64 | static bfd_reloc_status_type nios2_elf32_ujmp_relocate | |
65 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
66 | static bfd_reloc_status_type nios2_elf32_cjmp_relocate | |
67 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
68 | static bfd_reloc_status_type nios2_elf32_callr_relocate | |
69 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
70 | ||
71 | /* Target vector. */ | |
6d00b590 AM |
72 | extern const bfd_target nios2_elf32_le_vec; |
73 | extern const bfd_target nios2_elf32_be_vec; | |
36591ba1 SL |
74 | |
75 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
76 | #define TP_OFFSET 0x7000 | |
77 | #define DTP_OFFSET 0x8000 | |
78 | ||
8c163c5a SL |
79 | /* The relocation tables used for SHT_REL sections. There are separate |
80 | tables for R1 and R2 encodings. */ | |
81 | static reloc_howto_type elf_nios2_r1_howto_table_rel[] = { | |
36591ba1 SL |
82 | /* No relocation. */ |
83 | HOWTO (R_NIOS2_NONE, /* type */ | |
84 | 0, /* rightshift */ | |
6346d5ca | 85 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
36591ba1 SL |
86 | 0, /* bitsize */ |
87 | FALSE, /* pc_relative */ | |
88 | 0, /* bitpos */ | |
89 | complain_overflow_dont, /* complain_on_overflow */ | |
90 | bfd_elf_generic_reloc, /* special_function */ | |
91 | "R_NIOS2_NONE", /* name */ | |
92 | FALSE, /* partial_inplace */ | |
93 | 0, /* src_mask */ | |
94 | 0, /* dst_mask */ | |
95 | FALSE), /* pcrel_offset */ | |
96 | ||
97 | /* 16-bit signed immediate relocation. */ | |
98 | HOWTO (R_NIOS2_S16, /* type */ | |
99 | 0, /* rightshift */ | |
100 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
101 | 16, /* bitsize */ | |
102 | FALSE, /* pc_relative */ | |
103 | 6, /* bitpos */ | |
104 | complain_overflow_signed, /* complain on overflow */ | |
105 | bfd_elf_generic_reloc, /* special function */ | |
106 | "R_NIOS2_S16", /* name */ | |
107 | FALSE, /* partial_inplace */ | |
108 | 0x003fffc0, /* src_mask */ | |
109 | 0x003fffc0, /* dest_mask */ | |
110 | FALSE), /* pcrel_offset */ | |
111 | ||
112 | /* 16-bit unsigned immediate relocation. */ | |
113 | HOWTO (R_NIOS2_U16, /* type */ | |
114 | 0, /* rightshift */ | |
115 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
116 | 16, /* bitsize */ | |
117 | FALSE, /* pc_relative */ | |
118 | 6, /* bitpos */ | |
119 | complain_overflow_unsigned, /* complain on overflow */ | |
120 | bfd_elf_generic_reloc, /* special function */ | |
121 | "R_NIOS2_U16", /* name */ | |
122 | FALSE, /* partial_inplace */ | |
123 | 0x003fffc0, /* src_mask */ | |
124 | 0x003fffc0, /* dest_mask */ | |
125 | FALSE), /* pcrel_offset */ | |
126 | ||
127 | HOWTO (R_NIOS2_PCREL16, /* type */ | |
128 | 0, /* rightshift */ | |
129 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
130 | 16, /* bitsize */ | |
131 | TRUE, /* pc_relative */ | |
132 | 6, /* bitpos */ | |
133 | complain_overflow_signed, /* complain on overflow */ | |
134 | nios2_elf32_pcrel16_relocate, /* special function */ | |
135 | "R_NIOS2_PCREL16", /* name */ | |
136 | FALSE, /* partial_inplace */ | |
137 | 0x003fffc0, /* src_mask */ | |
138 | 0x003fffc0, /* dest_mask */ | |
139 | TRUE), /* pcrel_offset */ | |
140 | ||
141 | HOWTO (R_NIOS2_CALL26, /* type */ | |
142 | 2, /* rightshift */ | |
143 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
144 | 26, /* bitsize */ | |
145 | FALSE, /* pc_relative */ | |
146 | 6, /* bitpos */ | |
147 | complain_overflow_dont, /* complain on overflow */ | |
148 | nios2_elf32_call26_relocate, /* special function */ | |
149 | "R_NIOS2_CALL26", /* name */ | |
150 | FALSE, /* partial_inplace */ | |
151 | 0xffffffc0, /* src_mask */ | |
152 | 0xffffffc0, /* dst_mask */ | |
153 | FALSE), /* pcrel_offset */ | |
154 | ||
155 | HOWTO (R_NIOS2_IMM5, | |
156 | 0, | |
157 | 2, | |
158 | 5, | |
159 | FALSE, | |
160 | 6, | |
161 | complain_overflow_bitfield, | |
162 | bfd_elf_generic_reloc, | |
163 | "R_NIOS2_IMM5", | |
164 | FALSE, | |
165 | 0x000007c0, | |
166 | 0x000007c0, | |
167 | FALSE), | |
168 | ||
169 | HOWTO (R_NIOS2_CACHE_OPX, | |
170 | 0, | |
171 | 2, | |
172 | 5, | |
173 | FALSE, | |
174 | 22, | |
175 | complain_overflow_bitfield, | |
176 | bfd_elf_generic_reloc, | |
177 | "R_NIOS2_CACHE_OPX", | |
178 | FALSE, | |
179 | 0x07c00000, | |
180 | 0x07c00000, | |
181 | FALSE), | |
182 | ||
183 | HOWTO (R_NIOS2_IMM6, | |
184 | 0, | |
185 | 2, | |
186 | 6, | |
187 | FALSE, | |
188 | 6, | |
189 | complain_overflow_bitfield, | |
190 | bfd_elf_generic_reloc, | |
191 | "R_NIOS2_IMM6", | |
192 | FALSE, | |
193 | 0x00000fc0, | |
194 | 0x00000fc0, | |
195 | FALSE), | |
196 | ||
197 | HOWTO (R_NIOS2_IMM8, | |
198 | 0, | |
199 | 2, | |
200 | 8, | |
201 | FALSE, | |
202 | 6, | |
203 | complain_overflow_bitfield, | |
204 | bfd_elf_generic_reloc, | |
205 | "R_NIOS2_IMM8", | |
206 | FALSE, | |
207 | 0x00003fc0, | |
208 | 0x00003fc0, | |
209 | FALSE), | |
210 | ||
211 | HOWTO (R_NIOS2_HI16, | |
212 | 0, | |
213 | 2, | |
214 | 32, | |
215 | FALSE, | |
216 | 6, | |
217 | complain_overflow_dont, | |
218 | nios2_elf32_hi16_relocate, | |
219 | "R_NIOS2_HI16", | |
220 | FALSE, | |
221 | 0x003fffc0, | |
222 | 0x003fffc0, | |
223 | FALSE), | |
224 | ||
225 | HOWTO (R_NIOS2_LO16, | |
226 | 0, | |
227 | 2, | |
228 | 32, | |
229 | FALSE, | |
230 | 6, | |
231 | complain_overflow_dont, | |
232 | nios2_elf32_lo16_relocate, | |
233 | "R_NIOS2_LO16", | |
234 | FALSE, | |
235 | 0x003fffc0, | |
236 | 0x003fffc0, | |
237 | FALSE), | |
238 | ||
239 | HOWTO (R_NIOS2_HIADJ16, | |
240 | 0, | |
241 | 2, | |
242 | 32, | |
243 | FALSE, | |
244 | 6, | |
245 | complain_overflow_dont, | |
246 | nios2_elf32_hiadj16_relocate, | |
247 | "R_NIOS2_HIADJ16", | |
248 | FALSE, | |
249 | 0x003fffc0, | |
250 | 0x003fffc0, | |
251 | FALSE), | |
252 | ||
253 | HOWTO (R_NIOS2_BFD_RELOC_32, | |
254 | 0, | |
255 | 2, /* long */ | |
256 | 32, | |
257 | FALSE, | |
258 | 0, | |
259 | complain_overflow_dont, | |
260 | bfd_elf_generic_reloc, | |
261 | "R_NIOS2_BFD_RELOC32", | |
262 | FALSE, | |
263 | 0xffffffff, | |
264 | 0xffffffff, | |
265 | FALSE), | |
266 | ||
267 | HOWTO (R_NIOS2_BFD_RELOC_16, | |
268 | 0, | |
269 | 1, /* short */ | |
270 | 16, | |
271 | FALSE, | |
272 | 0, | |
273 | complain_overflow_bitfield, | |
274 | bfd_elf_generic_reloc, | |
275 | "R_NIOS2_BFD_RELOC16", | |
276 | FALSE, | |
277 | 0x0000ffff, | |
278 | 0x0000ffff, | |
279 | FALSE), | |
280 | ||
281 | HOWTO (R_NIOS2_BFD_RELOC_8, | |
282 | 0, | |
283 | 0, /* byte */ | |
284 | 8, | |
285 | FALSE, | |
286 | 0, | |
287 | complain_overflow_bitfield, | |
288 | bfd_elf_generic_reloc, | |
289 | "R_NIOS2_BFD_RELOC8", | |
290 | FALSE, | |
291 | 0x000000ff, | |
292 | 0x000000ff, | |
293 | FALSE), | |
294 | ||
295 | HOWTO (R_NIOS2_GPREL, | |
296 | 0, | |
297 | 2, | |
298 | 32, | |
299 | FALSE, | |
300 | 6, | |
301 | complain_overflow_dont, | |
302 | nios2_elf32_gprel_relocate, | |
303 | "R_NIOS2_GPREL", | |
304 | FALSE, | |
305 | 0x003fffc0, | |
306 | 0x003fffc0, | |
307 | FALSE), | |
308 | ||
309 | HOWTO (R_NIOS2_GNU_VTINHERIT, | |
310 | 0, | |
311 | 2, /* short */ | |
312 | 0, | |
313 | FALSE, | |
314 | 0, | |
315 | complain_overflow_dont, | |
316 | NULL, | |
317 | "R_NIOS2_GNU_VTINHERIT", | |
318 | FALSE, | |
319 | 0, | |
320 | 0, | |
321 | FALSE), | |
322 | ||
323 | HOWTO (R_NIOS2_GNU_VTENTRY, | |
324 | 0, | |
325 | 2, /* byte */ | |
326 | 0, | |
327 | FALSE, | |
328 | 0, | |
329 | complain_overflow_dont, | |
330 | _bfd_elf_rel_vtable_reloc_fn, | |
331 | "R_NIOS2_GNU_VTENTRY", | |
332 | FALSE, | |
333 | 0, | |
334 | 0, | |
335 | FALSE), | |
336 | ||
337 | HOWTO (R_NIOS2_UJMP, | |
338 | 0, | |
339 | 2, | |
340 | 32, | |
341 | FALSE, | |
342 | 6, | |
343 | complain_overflow_dont, | |
344 | nios2_elf32_ujmp_relocate, | |
345 | "R_NIOS2_UJMP", | |
346 | FALSE, | |
347 | 0x003fffc0, | |
348 | 0x003fffc0, | |
349 | FALSE), | |
350 | ||
351 | HOWTO (R_NIOS2_CJMP, | |
352 | 0, | |
353 | 2, | |
354 | 32, | |
355 | FALSE, | |
356 | 6, | |
357 | complain_overflow_dont, | |
358 | nios2_elf32_cjmp_relocate, | |
359 | "R_NIOS2_CJMP", | |
360 | FALSE, | |
361 | 0x003fffc0, | |
362 | 0x003fffc0, | |
363 | FALSE), | |
364 | ||
365 | HOWTO (R_NIOS2_CALLR, | |
366 | 0, | |
367 | 2, | |
368 | 32, | |
369 | FALSE, | |
370 | 6, | |
371 | complain_overflow_dont, | |
372 | nios2_elf32_callr_relocate, | |
373 | "R_NIOS2_CALLR", | |
374 | FALSE, | |
375 | 0x003fffc0, | |
376 | 0x003fffc0, | |
377 | FALSE), | |
378 | ||
379 | HOWTO (R_NIOS2_ALIGN, | |
380 | 0, | |
381 | 2, | |
382 | 0, | |
383 | FALSE, | |
384 | 0, | |
385 | complain_overflow_dont, | |
386 | nios2_elf32_ignore_reloc, | |
387 | "R_NIOS2_ALIGN", | |
388 | FALSE, | |
389 | 0, | |
390 | 0, | |
391 | TRUE), | |
392 | ||
393 | ||
394 | HOWTO (R_NIOS2_GOT16, | |
395 | 0, | |
396 | 2, | |
397 | 16, | |
398 | FALSE, | |
399 | 6, | |
400 | complain_overflow_bitfield, | |
401 | bfd_elf_generic_reloc, | |
402 | "R_NIOS2_GOT16", | |
403 | FALSE, | |
404 | 0x003fffc0, | |
405 | 0x003fffc0, | |
406 | FALSE), | |
407 | ||
408 | HOWTO (R_NIOS2_CALL16, | |
409 | 0, | |
410 | 2, | |
411 | 16, | |
412 | FALSE, | |
413 | 6, | |
414 | complain_overflow_bitfield, | |
415 | bfd_elf_generic_reloc, | |
416 | "R_NIOS2_CALL16", | |
417 | FALSE, | |
418 | 0x003fffc0, | |
419 | 0x003fffc0, | |
420 | FALSE), | |
421 | ||
422 | HOWTO (R_NIOS2_GOTOFF_LO, | |
423 | 0, | |
424 | 2, | |
425 | 16, | |
426 | FALSE, | |
427 | 6, | |
428 | complain_overflow_dont, | |
429 | bfd_elf_generic_reloc, | |
430 | "R_NIOS2_GOTOFF_LO", | |
431 | FALSE, | |
432 | 0x003fffc0, | |
433 | 0x003fffc0, | |
434 | FALSE), | |
435 | ||
436 | HOWTO (R_NIOS2_GOTOFF_HA, | |
437 | 0, | |
438 | 2, | |
439 | 16, | |
440 | FALSE, | |
441 | 6, | |
442 | complain_overflow_dont, | |
443 | bfd_elf_generic_reloc, | |
444 | "R_NIOS2_GOTOFF_HA", | |
445 | FALSE, | |
446 | 0x003fffc0, | |
447 | 0x003fffc0, | |
448 | FALSE), | |
449 | ||
450 | HOWTO (R_NIOS2_PCREL_LO, | |
451 | 0, | |
452 | 2, | |
453 | 16, | |
454 | TRUE, | |
455 | 6, | |
456 | complain_overflow_dont, | |
457 | nios2_elf32_pcrel_lo16_relocate, | |
458 | "R_NIOS2_PCREL_LO", | |
459 | FALSE, | |
460 | 0x003fffc0, | |
461 | 0x003fffc0, | |
462 | TRUE), | |
463 | ||
464 | HOWTO (R_NIOS2_PCREL_HA, | |
465 | 0, | |
466 | 2, | |
467 | 16, | |
468 | FALSE, /* This is a PC-relative relocation, but we need to subtract | |
469 | PC ourselves before the HIADJ. */ | |
470 | 6, | |
471 | complain_overflow_dont, | |
472 | nios2_elf32_pcrel_hiadj16_relocate, | |
473 | "R_NIOS2_PCREL_HA", | |
474 | FALSE, | |
475 | 0x003fffc0, | |
476 | 0x003fffc0, | |
477 | TRUE), | |
478 | ||
479 | HOWTO (R_NIOS2_TLS_GD16, | |
480 | 0, | |
481 | 2, | |
482 | 16, | |
483 | FALSE, | |
484 | 6, | |
485 | complain_overflow_bitfield, | |
486 | bfd_elf_generic_reloc, | |
487 | "R_NIOS2_TLS_GD16", | |
488 | FALSE, | |
489 | 0x003fffc0, | |
490 | 0x003fffc0, | |
491 | FALSE), | |
492 | ||
493 | HOWTO (R_NIOS2_TLS_LDM16, | |
494 | 0, | |
495 | 2, | |
496 | 16, | |
497 | FALSE, | |
498 | 6, | |
499 | complain_overflow_bitfield, | |
500 | bfd_elf_generic_reloc, | |
501 | "R_NIOS2_TLS_LDM16", | |
502 | FALSE, | |
503 | 0x003fffc0, | |
504 | 0x003fffc0, | |
505 | FALSE), | |
506 | ||
507 | HOWTO (R_NIOS2_TLS_LDO16, | |
508 | 0, | |
509 | 2, | |
510 | 16, | |
511 | FALSE, | |
512 | 6, | |
513 | complain_overflow_bitfield, | |
514 | bfd_elf_generic_reloc, | |
515 | "R_NIOS2_TLS_LDO16", | |
516 | FALSE, | |
517 | 0x003fffc0, | |
518 | 0x003fffc0, | |
519 | FALSE), | |
520 | ||
521 | HOWTO (R_NIOS2_TLS_IE16, | |
522 | 0, | |
523 | 2, | |
524 | 16, | |
525 | FALSE, | |
526 | 6, | |
527 | complain_overflow_bitfield, | |
528 | bfd_elf_generic_reloc, | |
529 | "R_NIOS2_TLS_IE16", | |
530 | FALSE, | |
531 | 0x003fffc0, | |
532 | 0x003fffc0, | |
533 | FALSE), | |
534 | ||
535 | HOWTO (R_NIOS2_TLS_LE16, | |
536 | 0, | |
537 | 2, | |
538 | 16, | |
539 | FALSE, | |
540 | 6, | |
541 | complain_overflow_bitfield, | |
542 | bfd_elf_generic_reloc, | |
543 | "R_NIOS2_TLS_LE16", | |
544 | FALSE, | |
545 | 0x003fffc0, | |
546 | 0x003fffc0, | |
547 | FALSE), | |
548 | ||
549 | HOWTO (R_NIOS2_TLS_DTPMOD, | |
550 | 0, | |
551 | 2, | |
552 | 32, | |
553 | FALSE, | |
554 | 0, | |
555 | complain_overflow_dont, | |
556 | bfd_elf_generic_reloc, | |
557 | "R_NIOS2_TLS_DTPMOD", | |
558 | FALSE, | |
559 | 0xffffffff, | |
560 | 0xffffffff, | |
561 | FALSE), | |
562 | ||
563 | HOWTO (R_NIOS2_TLS_DTPREL, | |
564 | 0, | |
565 | 2, | |
566 | 32, | |
567 | FALSE, | |
568 | 0, | |
569 | complain_overflow_dont, | |
570 | bfd_elf_generic_reloc, | |
571 | "R_NIOS2_TLS_DTPREL", | |
572 | FALSE, | |
573 | 0xffffffff, | |
574 | 0xffffffff, | |
575 | FALSE), | |
576 | ||
577 | HOWTO (R_NIOS2_TLS_TPREL, | |
578 | 0, | |
579 | 2, | |
580 | 32, | |
581 | FALSE, | |
582 | 0, | |
583 | complain_overflow_dont, | |
584 | bfd_elf_generic_reloc, | |
585 | "R_NIOS2_TLS_TPREL", | |
586 | FALSE, | |
587 | 0xffffffff, | |
588 | 0xffffffff, | |
589 | FALSE), | |
590 | ||
591 | HOWTO (R_NIOS2_COPY, | |
592 | 0, | |
593 | 2, | |
594 | 32, | |
595 | FALSE, | |
596 | 0, | |
597 | complain_overflow_dont, | |
598 | bfd_elf_generic_reloc, | |
599 | "R_NIOS2_COPY", | |
600 | FALSE, | |
601 | 0, | |
602 | 0, | |
603 | FALSE), | |
604 | ||
605 | HOWTO (R_NIOS2_GLOB_DAT, | |
606 | 0, | |
607 | 2, | |
608 | 32, | |
609 | FALSE, | |
610 | 0, | |
611 | complain_overflow_dont, | |
612 | bfd_elf_generic_reloc, | |
613 | "R_NIOS2_GLOB_DAT", | |
614 | FALSE, | |
615 | 0xffffffff, | |
616 | 0xffffffff, | |
617 | FALSE), | |
618 | ||
619 | HOWTO (R_NIOS2_JUMP_SLOT, | |
620 | 0, | |
621 | 2, | |
622 | 32, | |
623 | FALSE, | |
624 | 0, | |
625 | complain_overflow_dont, | |
626 | bfd_elf_generic_reloc, | |
627 | "R_NIOS2_JUMP_SLOT", | |
628 | FALSE, | |
629 | 0xffffffff, | |
630 | 0xffffffff, | |
631 | FALSE), | |
632 | ||
633 | HOWTO (R_NIOS2_RELATIVE, | |
634 | 0, | |
635 | 2, | |
636 | 32, | |
637 | FALSE, | |
638 | 0, | |
639 | complain_overflow_dont, | |
640 | bfd_elf_generic_reloc, | |
641 | "R_NIOS2_RELATIVE", | |
642 | FALSE, | |
643 | 0xffffffff, | |
644 | 0xffffffff, | |
645 | FALSE), | |
646 | ||
647 | HOWTO (R_NIOS2_GOTOFF, | |
648 | 0, | |
649 | 2, | |
650 | 32, | |
651 | FALSE, | |
652 | 0, | |
653 | complain_overflow_dont, | |
654 | bfd_elf_generic_reloc, | |
655 | "R_NIOS2_GOTOFF", | |
656 | FALSE, | |
657 | 0xffffffff, | |
658 | 0xffffffff, | |
659 | FALSE), | |
660 | ||
78058a5e SL |
661 | HOWTO (R_NIOS2_CALL26_NOAT, /* type */ |
662 | 2, /* rightshift */ | |
663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 26, /* bitsize */ | |
665 | FALSE, /* pc_relative */ | |
666 | 6, /* bitpos */ | |
667 | complain_overflow_dont, /* complain on overflow */ | |
668 | nios2_elf32_call26_relocate, /* special function */ | |
669 | "R_NIOS2_CALL26_NOAT", /* name */ | |
670 | FALSE, /* partial_inplace */ | |
671 | 0xffffffc0, /* src_mask */ | |
672 | 0xffffffc0, /* dst_mask */ | |
673 | FALSE), /* pcrel_offset */ | |
674 | ||
1c2de463 SL |
675 | HOWTO (R_NIOS2_GOT_LO, |
676 | 0, | |
677 | 2, | |
678 | 16, | |
679 | FALSE, | |
680 | 6, | |
681 | complain_overflow_dont, | |
682 | bfd_elf_generic_reloc, | |
683 | "R_NIOS2_GOT_LO", | |
684 | FALSE, | |
685 | 0x003fffc0, | |
686 | 0x003fffc0, | |
687 | FALSE), | |
688 | ||
689 | HOWTO (R_NIOS2_GOT_HA, | |
690 | 0, | |
691 | 2, | |
692 | 16, | |
693 | FALSE, | |
694 | 6, | |
695 | complain_overflow_dont, | |
696 | bfd_elf_generic_reloc, | |
697 | "R_NIOS2_GOT_HA", | |
698 | FALSE, | |
699 | 0x003fffc0, | |
700 | 0x003fffc0, | |
701 | FALSE), | |
702 | ||
703 | HOWTO (R_NIOS2_CALL_LO, | |
704 | 0, | |
705 | 2, | |
706 | 16, | |
707 | FALSE, | |
708 | 6, | |
709 | complain_overflow_dont, | |
710 | bfd_elf_generic_reloc, | |
711 | "R_NIOS2_CALL_LO", | |
712 | FALSE, | |
713 | 0x003fffc0, | |
714 | 0x003fffc0, | |
715 | FALSE), | |
716 | ||
717 | HOWTO (R_NIOS2_CALL_HA, | |
718 | 0, | |
719 | 2, | |
720 | 16, | |
721 | FALSE, | |
722 | 6, | |
723 | complain_overflow_dont, | |
724 | bfd_elf_generic_reloc, | |
725 | "R_NIOS2_CALL_HA", | |
726 | FALSE, | |
727 | 0x003fffc0, | |
728 | 0x003fffc0, | |
729 | FALSE), | |
730 | ||
36591ba1 SL |
731 | /* Add other relocations here. */ |
732 | }; | |
733 | ||
8c163c5a SL |
734 | static reloc_howto_type elf_nios2_r2_howto_table_rel[] = { |
735 | /* No relocation. */ | |
736 | HOWTO (R_NIOS2_NONE, /* type */ | |
737 | 0, /* rightshift */ | |
738 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
739 | 0, /* bitsize */ | |
740 | FALSE, /* pc_relative */ | |
741 | 0, /* bitpos */ | |
742 | complain_overflow_dont, /* complain_on_overflow */ | |
743 | bfd_elf_generic_reloc, /* special_function */ | |
744 | "R_NIOS2_NONE", /* name */ | |
745 | FALSE, /* partial_inplace */ | |
746 | 0, /* src_mask */ | |
747 | 0, /* dst_mask */ | |
748 | FALSE), /* pcrel_offset */ | |
749 | ||
750 | /* 16-bit signed immediate relocation. */ | |
751 | HOWTO (R_NIOS2_S16, /* type */ | |
752 | 0, /* rightshift */ | |
753 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 16, /* bitsize */ | |
755 | FALSE, /* pc_relative */ | |
756 | 16, /* bitpos */ | |
757 | complain_overflow_signed, /* complain on overflow */ | |
758 | bfd_elf_generic_reloc, /* special function */ | |
759 | "R_NIOS2_S16", /* name */ | |
760 | FALSE, /* partial_inplace */ | |
761 | 0xffff0000, /* src_mask */ | |
762 | 0xffff0000, /* dest_mask */ | |
763 | FALSE), /* pcrel_offset */ | |
764 | ||
765 | /* 16-bit unsigned immediate relocation. */ | |
766 | HOWTO (R_NIOS2_U16, /* type */ | |
767 | 0, /* rightshift */ | |
768 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
769 | 16, /* bitsize */ | |
770 | FALSE, /* pc_relative */ | |
771 | 16, /* bitpos */ | |
772 | complain_overflow_unsigned, /* complain on overflow */ | |
773 | bfd_elf_generic_reloc, /* special function */ | |
774 | "R_NIOS2_U16", /* name */ | |
775 | FALSE, /* partial_inplace */ | |
776 | 0xffff0000, /* src_mask */ | |
777 | 0xffff0000, /* dest_mask */ | |
778 | FALSE), /* pcrel_offset */ | |
779 | ||
780 | HOWTO (R_NIOS2_PCREL16, /* type */ | |
781 | 0, /* rightshift */ | |
782 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
783 | 16, /* bitsize */ | |
784 | TRUE, /* pc_relative */ | |
785 | 16, /* bitpos */ | |
786 | complain_overflow_signed, /* complain on overflow */ | |
787 | nios2_elf32_pcrel16_relocate, /* special function */ | |
788 | "R_NIOS2_PCREL16", /* name */ | |
789 | FALSE, /* partial_inplace */ | |
790 | 0xffff0000, /* src_mask */ | |
791 | 0xffff0000, /* dest_mask */ | |
792 | TRUE), /* pcrel_offset */ | |
793 | ||
794 | HOWTO (R_NIOS2_CALL26, /* type */ | |
795 | 2, /* rightshift */ | |
796 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
797 | 26, /* bitsize */ | |
798 | FALSE, /* pc_relative */ | |
799 | 6, /* bitpos */ | |
800 | complain_overflow_dont, /* complain on overflow */ | |
801 | nios2_elf32_call26_relocate, /* special function */ | |
802 | "R_NIOS2_CALL26", /* name */ | |
803 | FALSE, /* partial_inplace */ | |
804 | 0xffffffc0, /* src_mask */ | |
805 | 0xffffffc0, /* dst_mask */ | |
806 | FALSE), /* pcrel_offset */ | |
807 | ||
808 | HOWTO (R_NIOS2_IMM5, | |
809 | 0, | |
810 | 2, | |
811 | 5, | |
812 | FALSE, | |
813 | 21, | |
814 | complain_overflow_bitfield, | |
815 | bfd_elf_generic_reloc, | |
816 | "R_NIOS2_IMM5", | |
817 | FALSE, | |
818 | 0x03e00000, | |
819 | 0x03e00000, | |
820 | FALSE), | |
821 | ||
822 | HOWTO (R_NIOS2_CACHE_OPX, | |
823 | 0, | |
824 | 2, | |
825 | 5, | |
826 | FALSE, | |
827 | 11, | |
828 | complain_overflow_bitfield, | |
829 | bfd_elf_generic_reloc, | |
830 | "R_NIOS2_CACHE_OPX", | |
831 | FALSE, | |
832 | 0x0000f800, | |
833 | 0x0000f800, | |
834 | FALSE), | |
835 | ||
836 | HOWTO (R_NIOS2_IMM6, | |
837 | 0, | |
838 | 2, | |
839 | 6, | |
840 | FALSE, | |
841 | 26, | |
842 | complain_overflow_bitfield, | |
843 | bfd_elf_generic_reloc, | |
844 | "R_NIOS2_IMM6", | |
845 | FALSE, | |
846 | 0xfc000000, | |
847 | 0xfc000000, | |
848 | FALSE), | |
849 | ||
850 | HOWTO (R_NIOS2_IMM8, | |
851 | 0, | |
852 | 2, | |
853 | 8, | |
854 | FALSE, | |
855 | 24, | |
856 | complain_overflow_bitfield, | |
857 | bfd_elf_generic_reloc, | |
858 | "R_NIOS2_IMM8", | |
859 | FALSE, | |
860 | 0xff000000, | |
861 | 0xff000000, | |
862 | FALSE), | |
863 | ||
864 | HOWTO (R_NIOS2_HI16, | |
865 | 0, | |
866 | 2, | |
867 | 32, | |
868 | FALSE, | |
869 | 16, | |
870 | complain_overflow_dont, | |
871 | nios2_elf32_hi16_relocate, | |
872 | "R_NIOS2_HI16", | |
873 | FALSE, | |
874 | 0xffff0000, | |
875 | 0xffff0000, | |
876 | FALSE), | |
877 | ||
878 | HOWTO (R_NIOS2_LO16, | |
879 | 0, | |
880 | 2, | |
881 | 32, | |
882 | FALSE, | |
883 | 16, | |
884 | complain_overflow_dont, | |
885 | nios2_elf32_lo16_relocate, | |
886 | "R_NIOS2_LO16", | |
887 | FALSE, | |
888 | 0xffff0000, | |
889 | 0xffff0000, | |
890 | FALSE), | |
891 | ||
892 | HOWTO (R_NIOS2_HIADJ16, | |
893 | 0, | |
894 | 2, | |
895 | 32, | |
896 | FALSE, | |
897 | 16, | |
898 | complain_overflow_dont, | |
899 | nios2_elf32_hiadj16_relocate, | |
900 | "R_NIOS2_HIADJ16", | |
901 | FALSE, | |
902 | 0xffff0000, | |
903 | 0xffff0000, | |
904 | FALSE), | |
905 | ||
906 | HOWTO (R_NIOS2_BFD_RELOC_32, | |
907 | 0, | |
908 | 2, /* long */ | |
909 | 32, | |
910 | FALSE, | |
911 | 0, | |
912 | complain_overflow_dont, | |
913 | bfd_elf_generic_reloc, | |
914 | "R_NIOS2_BFD_RELOC32", | |
915 | FALSE, | |
916 | 0xffffffff, | |
917 | 0xffffffff, | |
918 | FALSE), | |
919 | ||
920 | HOWTO (R_NIOS2_BFD_RELOC_16, | |
921 | 0, | |
922 | 1, /* short */ | |
923 | 16, | |
924 | FALSE, | |
925 | 0, | |
926 | complain_overflow_bitfield, | |
927 | bfd_elf_generic_reloc, | |
928 | "R_NIOS2_BFD_RELOC16", | |
929 | FALSE, | |
930 | 0x0000ffff, | |
931 | 0x0000ffff, | |
932 | FALSE), | |
933 | ||
934 | HOWTO (R_NIOS2_BFD_RELOC_8, | |
935 | 0, | |
936 | 0, /* byte */ | |
937 | 8, | |
938 | FALSE, | |
939 | 0, | |
940 | complain_overflow_bitfield, | |
941 | bfd_elf_generic_reloc, | |
942 | "R_NIOS2_BFD_RELOC8", | |
943 | FALSE, | |
944 | 0x000000ff, | |
945 | 0x000000ff, | |
946 | FALSE), | |
947 | ||
948 | HOWTO (R_NIOS2_GPREL, | |
949 | 0, | |
950 | 2, | |
951 | 32, | |
952 | FALSE, | |
953 | 16, | |
954 | complain_overflow_dont, | |
955 | nios2_elf32_gprel_relocate, | |
956 | "R_NIOS2_GPREL", | |
957 | FALSE, | |
958 | 0xffff0000, | |
959 | 0xffff0000, | |
960 | FALSE), | |
961 | ||
962 | HOWTO (R_NIOS2_GNU_VTINHERIT, | |
963 | 0, | |
964 | 2, /* short */ | |
965 | 0, | |
966 | FALSE, | |
967 | 0, | |
968 | complain_overflow_dont, | |
969 | NULL, | |
970 | "R_NIOS2_GNU_VTINHERIT", | |
971 | FALSE, | |
972 | 0, | |
973 | 0, | |
974 | FALSE), | |
975 | ||
976 | HOWTO (R_NIOS2_GNU_VTENTRY, | |
977 | 0, | |
978 | 2, /* byte */ | |
979 | 0, | |
980 | FALSE, | |
981 | 0, | |
982 | complain_overflow_dont, | |
983 | _bfd_elf_rel_vtable_reloc_fn, | |
984 | "R_NIOS2_GNU_VTENTRY", | |
985 | FALSE, | |
986 | 0, | |
987 | 0, | |
988 | FALSE), | |
989 | ||
990 | HOWTO (R_NIOS2_UJMP, | |
991 | 0, | |
992 | 2, | |
993 | 32, | |
994 | FALSE, | |
995 | 16, | |
996 | complain_overflow_dont, | |
997 | nios2_elf32_ujmp_relocate, | |
998 | "R_NIOS2_UJMP", | |
999 | FALSE, | |
1000 | 0xffff0000, | |
1001 | 0xffff0000, | |
1002 | FALSE), | |
1003 | ||
1004 | HOWTO (R_NIOS2_CJMP, | |
1005 | 0, | |
1006 | 2, | |
1007 | 32, | |
1008 | FALSE, | |
1009 | 16, | |
1010 | complain_overflow_dont, | |
1011 | nios2_elf32_cjmp_relocate, | |
1012 | "R_NIOS2_CJMP", | |
1013 | FALSE, | |
1014 | 0xffff0000, | |
1015 | 0xffff0000, | |
1016 | FALSE), | |
1017 | ||
1018 | HOWTO (R_NIOS2_CALLR, | |
1019 | 0, | |
1020 | 2, | |
1021 | 32, | |
1022 | FALSE, | |
1023 | 16, | |
1024 | complain_overflow_dont, | |
1025 | nios2_elf32_callr_relocate, | |
1026 | "R_NIOS2_CALLR", | |
1027 | FALSE, | |
1028 | 0xffff0000, | |
1029 | 0xffff0000, | |
1030 | FALSE), | |
1031 | ||
1032 | HOWTO (R_NIOS2_ALIGN, | |
1033 | 0, | |
1034 | 2, | |
1035 | 0, | |
1036 | FALSE, | |
1037 | 0, | |
1038 | complain_overflow_dont, | |
1039 | nios2_elf32_ignore_reloc, | |
1040 | "R_NIOS2_ALIGN", | |
1041 | FALSE, | |
1042 | 0, | |
1043 | 0, | |
1044 | TRUE), | |
1045 | ||
1046 | HOWTO (R_NIOS2_GOT16, | |
1047 | 0, | |
1048 | 2, | |
1049 | 16, | |
1050 | FALSE, | |
1051 | 16, | |
1052 | complain_overflow_bitfield, | |
1053 | bfd_elf_generic_reloc, | |
1054 | "R_NIOS2_GOT16", | |
1055 | FALSE, | |
1056 | 0xffff0000, | |
1057 | 0xffff0000, | |
1058 | FALSE), | |
1059 | ||
1060 | HOWTO (R_NIOS2_CALL16, | |
1061 | 0, | |
1062 | 2, | |
1063 | 16, | |
1064 | FALSE, | |
1065 | 16, | |
1066 | complain_overflow_bitfield, | |
1067 | bfd_elf_generic_reloc, | |
1068 | "R_NIOS2_CALL16", | |
1069 | FALSE, | |
1070 | 0xffff0000, | |
1071 | 0xffff0000, | |
1072 | FALSE), | |
1073 | ||
1074 | HOWTO (R_NIOS2_GOTOFF_LO, | |
1075 | 0, | |
1076 | 2, | |
1077 | 16, | |
1078 | FALSE, | |
1079 | 16, | |
1080 | complain_overflow_dont, | |
1081 | bfd_elf_generic_reloc, | |
1082 | "R_NIOS2_GOTOFF_LO", | |
1083 | FALSE, | |
1084 | 0xffff0000, | |
1085 | 0xffff0000, | |
1086 | FALSE), | |
1087 | ||
1088 | HOWTO (R_NIOS2_GOTOFF_HA, | |
1089 | 0, | |
1090 | 2, | |
1091 | 16, | |
1092 | FALSE, | |
1093 | 16, | |
1094 | complain_overflow_dont, | |
1095 | bfd_elf_generic_reloc, | |
1096 | "R_NIOS2_GOTOFF_HA", | |
1097 | FALSE, | |
1098 | 0xffff0000, | |
1099 | 0xffff0000, | |
1100 | FALSE), | |
1101 | ||
1102 | HOWTO (R_NIOS2_PCREL_LO, | |
1103 | 0, | |
1104 | 2, | |
1105 | 16, | |
1106 | TRUE, | |
1107 | 16, | |
1108 | complain_overflow_dont, | |
1109 | nios2_elf32_pcrel_lo16_relocate, | |
1110 | "R_NIOS2_PCREL_LO", | |
1111 | FALSE, | |
1112 | 0xffff0000, | |
1113 | 0xffff0000, | |
1114 | TRUE), | |
1115 | ||
1116 | HOWTO (R_NIOS2_PCREL_HA, | |
1117 | 0, | |
1118 | 2, | |
1119 | 16, | |
1120 | FALSE, /* This is a PC-relative relocation, but we need to subtract | |
1121 | PC ourselves before the HIADJ. */ | |
1122 | 16, | |
1123 | complain_overflow_dont, | |
1124 | nios2_elf32_pcrel_hiadj16_relocate, | |
1125 | "R_NIOS2_PCREL_HA", | |
1126 | FALSE, | |
1127 | 0xffff0000, | |
1128 | 0xffff0000, | |
1129 | TRUE), | |
1130 | ||
1131 | HOWTO (R_NIOS2_TLS_GD16, | |
1132 | 0, | |
1133 | 2, | |
1134 | 16, | |
1135 | FALSE, | |
1136 | 16, | |
1137 | complain_overflow_bitfield, | |
1138 | bfd_elf_generic_reloc, | |
1139 | "R_NIOS2_TLS_GD16", | |
1140 | FALSE, | |
1141 | 0xffff0000, | |
1142 | 0xffff0000, | |
1143 | FALSE), | |
1144 | ||
1145 | HOWTO (R_NIOS2_TLS_LDM16, | |
1146 | 0, | |
1147 | 2, | |
1148 | 16, | |
1149 | FALSE, | |
1150 | 16, | |
1151 | complain_overflow_bitfield, | |
1152 | bfd_elf_generic_reloc, | |
1153 | "R_NIOS2_TLS_LDM16", | |
1154 | FALSE, | |
1155 | 0xffff0000, | |
1156 | 0xffff0000, | |
1157 | FALSE), | |
1158 | ||
1159 | HOWTO (R_NIOS2_TLS_LDO16, | |
1160 | 0, | |
1161 | 2, | |
1162 | 16, | |
1163 | FALSE, | |
1164 | 16, | |
1165 | complain_overflow_bitfield, | |
1166 | bfd_elf_generic_reloc, | |
1167 | "R_NIOS2_TLS_LDO16", | |
1168 | FALSE, | |
1169 | 0xffff0000, | |
1170 | 0xffff0000, | |
1171 | FALSE), | |
1172 | ||
1173 | HOWTO (R_NIOS2_TLS_IE16, | |
1174 | 0, | |
1175 | 2, | |
1176 | 16, | |
1177 | FALSE, | |
1178 | 16, | |
1179 | complain_overflow_bitfield, | |
1180 | bfd_elf_generic_reloc, | |
1181 | "R_NIOS2_TLS_IE16", | |
1182 | FALSE, | |
1183 | 0xffff0000, | |
1184 | 0xffff0000, | |
1185 | FALSE), | |
1186 | ||
1187 | HOWTO (R_NIOS2_TLS_LE16, | |
1188 | 0, | |
1189 | 2, | |
1190 | 16, | |
1191 | FALSE, | |
1192 | 16, | |
1193 | complain_overflow_bitfield, | |
1194 | bfd_elf_generic_reloc, | |
1195 | "R_NIOS2_TLS_LE16", | |
1196 | FALSE, | |
1197 | 0xffff0000, | |
1198 | 0xffff0000, | |
1199 | FALSE), | |
1200 | ||
1201 | HOWTO (R_NIOS2_TLS_DTPMOD, | |
1202 | 0, | |
1203 | 2, | |
1204 | 32, | |
1205 | FALSE, | |
1206 | 0, | |
1207 | complain_overflow_dont, | |
1208 | bfd_elf_generic_reloc, | |
1209 | "R_NIOS2_TLS_DTPMOD", | |
1210 | FALSE, | |
1211 | 0xffffffff, | |
1212 | 0xffffffff, | |
1213 | FALSE), | |
1214 | ||
1215 | HOWTO (R_NIOS2_TLS_DTPREL, | |
1216 | 0, | |
1217 | 2, | |
1218 | 32, | |
1219 | FALSE, | |
1220 | 0, | |
1221 | complain_overflow_dont, | |
1222 | bfd_elf_generic_reloc, | |
1223 | "R_NIOS2_TLS_DTPREL", | |
1224 | FALSE, | |
1225 | 0xffffffff, | |
1226 | 0xffffffff, | |
1227 | FALSE), | |
1228 | ||
1229 | HOWTO (R_NIOS2_TLS_TPREL, | |
1230 | 0, | |
1231 | 2, | |
1232 | 32, | |
1233 | FALSE, | |
1234 | 0, | |
1235 | complain_overflow_dont, | |
1236 | bfd_elf_generic_reloc, | |
1237 | "R_NIOS2_TLS_TPREL", | |
1238 | FALSE, | |
1239 | 0xffffffff, | |
1240 | 0xffffffff, | |
1241 | FALSE), | |
1242 | ||
1243 | HOWTO (R_NIOS2_COPY, | |
1244 | 0, | |
1245 | 2, | |
1246 | 32, | |
1247 | FALSE, | |
1248 | 0, | |
1249 | complain_overflow_dont, | |
1250 | bfd_elf_generic_reloc, | |
1251 | "R_NIOS2_COPY", | |
1252 | FALSE, | |
1253 | 0, | |
1254 | 0, | |
1255 | FALSE), | |
1256 | ||
1257 | HOWTO (R_NIOS2_GLOB_DAT, | |
1258 | 0, | |
1259 | 2, | |
1260 | 32, | |
1261 | FALSE, | |
1262 | 0, | |
1263 | complain_overflow_dont, | |
1264 | bfd_elf_generic_reloc, | |
1265 | "R_NIOS2_GLOB_DAT", | |
1266 | FALSE, | |
1267 | 0xffffffff, | |
1268 | 0xffffffff, | |
1269 | FALSE), | |
1270 | ||
1271 | HOWTO (R_NIOS2_JUMP_SLOT, | |
1272 | 0, | |
1273 | 2, | |
1274 | 32, | |
1275 | FALSE, | |
1276 | 0, | |
1277 | complain_overflow_dont, | |
1278 | bfd_elf_generic_reloc, | |
1279 | "R_NIOS2_JUMP_SLOT", | |
1280 | FALSE, | |
1281 | 0xffffffff, | |
1282 | 0xffffffff, | |
1283 | FALSE), | |
1284 | ||
1285 | HOWTO (R_NIOS2_RELATIVE, | |
1286 | 0, | |
1287 | 2, | |
1288 | 32, | |
1289 | FALSE, | |
1290 | 0, | |
1291 | complain_overflow_dont, | |
1292 | bfd_elf_generic_reloc, | |
1293 | "R_NIOS2_RELATIVE", | |
1294 | FALSE, | |
1295 | 0xffffffff, | |
1296 | 0xffffffff, | |
1297 | FALSE), | |
1298 | ||
1299 | HOWTO (R_NIOS2_GOTOFF, | |
1300 | 0, | |
1301 | 2, | |
1302 | 32, | |
1303 | FALSE, | |
1304 | 0, | |
1305 | complain_overflow_dont, | |
1306 | bfd_elf_generic_reloc, | |
1307 | "R_NIOS2_GOTOFF", | |
1308 | FALSE, | |
1309 | 0xffffffff, | |
1310 | 0xffffffff, | |
1311 | FALSE), | |
1312 | ||
1313 | HOWTO (R_NIOS2_CALL26_NOAT, /* type */ | |
1314 | 2, /* rightshift */ | |
1315 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1316 | 26, /* bitsize */ | |
1317 | FALSE, /* pc_relative */ | |
1318 | 6, /* bitpos */ | |
1319 | complain_overflow_dont, /* complain on overflow */ | |
1320 | nios2_elf32_call26_relocate, /* special function */ | |
1321 | "R_NIOS2_CALL26_NOAT", /* name */ | |
1322 | FALSE, /* partial_inplace */ | |
1323 | 0xffffffc0, /* src_mask */ | |
1324 | 0xffffffc0, /* dst_mask */ | |
1325 | FALSE), /* pcrel_offset */ | |
1326 | ||
1327 | HOWTO (R_NIOS2_GOT_LO, | |
1328 | 0, | |
1329 | 2, | |
1330 | 16, | |
1331 | FALSE, | |
1332 | 16, | |
1333 | complain_overflow_dont, | |
1334 | bfd_elf_generic_reloc, | |
1335 | "R_NIOS2_GOT_LO", | |
1336 | FALSE, | |
1337 | 0xffff0000, | |
1338 | 0xffff0000, | |
1339 | FALSE), | |
1340 | ||
1341 | HOWTO (R_NIOS2_GOT_HA, | |
1342 | 0, | |
1343 | 2, | |
1344 | 16, | |
1345 | FALSE, | |
1346 | 16, | |
1347 | complain_overflow_dont, | |
1348 | bfd_elf_generic_reloc, | |
1349 | "R_NIOS2_GOT_HA", | |
1350 | FALSE, | |
1351 | 0xffff0000, | |
1352 | 0xffff0000, | |
1353 | FALSE), | |
1354 | ||
1355 | HOWTO (R_NIOS2_CALL_LO, | |
1356 | 0, | |
1357 | 2, | |
1358 | 16, | |
1359 | FALSE, | |
1360 | 16, | |
1361 | complain_overflow_dont, | |
1362 | bfd_elf_generic_reloc, | |
1363 | "R_NIOS2_CALL_LO", | |
1364 | FALSE, | |
1365 | 0xffff0000, | |
1366 | 0xffff0000, | |
1367 | FALSE), | |
1368 | ||
1369 | HOWTO (R_NIOS2_CALL_HA, | |
1370 | 0, | |
1371 | 2, | |
1372 | 16, | |
1373 | FALSE, | |
1374 | 16, | |
1375 | complain_overflow_dont, | |
1376 | bfd_elf_generic_reloc, | |
1377 | "R_NIOS2_CALL_HA", | |
1378 | FALSE, | |
1379 | 0xffff0000, | |
1380 | 0xffff0000, | |
1381 | FALSE), | |
1382 | ||
1383 | HOWTO (R_NIOS2_R2_S12, | |
1384 | 0, | |
1385 | 2, | |
1386 | 12, | |
1387 | FALSE, | |
1388 | 16, | |
1389 | complain_overflow_signed, | |
1390 | bfd_elf_generic_reloc, | |
1391 | "R_NIOS2_R2_S12", | |
1392 | FALSE, | |
1393 | 0x0fff0000, | |
1394 | 0x0fff0000, | |
1395 | FALSE), | |
1396 | ||
1397 | HOWTO (R_NIOS2_R2_I10_1_PCREL, | |
1398 | 1, | |
1399 | 1, | |
1400 | 10, | |
1401 | TRUE, | |
1402 | 6, | |
1403 | complain_overflow_signed, | |
07d6d2b8 | 1404 | bfd_elf_generic_reloc, /* FIXME? */ |
8c163c5a SL |
1405 | "R_NIOS2_R2_I10_1_PCREL", |
1406 | FALSE, | |
1407 | 0xffc0, | |
1408 | 0xffc0, | |
1409 | TRUE), | |
1410 | ||
1411 | HOWTO (R_NIOS2_R2_T1I7_1_PCREL, | |
1412 | 1, | |
1413 | 1, | |
1414 | 7, | |
1415 | TRUE, | |
1416 | 9, | |
1417 | complain_overflow_signed, | |
1418 | bfd_elf_generic_reloc, /* FIXME? */ | |
1419 | "R_NIOS2_R2_T1I7_1_PCREL", | |
1420 | FALSE, | |
1421 | 0xfe00, | |
1422 | 0xfe00, | |
1423 | TRUE), | |
1b786873 | 1424 | |
8c163c5a SL |
1425 | HOWTO (R_NIOS2_R2_T1I7_2, |
1426 | 2, | |
1427 | 1, | |
1428 | 7, | |
1429 | FALSE, | |
1430 | 9, | |
1431 | complain_overflow_unsigned, | |
1432 | bfd_elf_generic_reloc, | |
1433 | "R_NIOS2_R2_T1I7_2", | |
1434 | FALSE, | |
1435 | 0xfe00, | |
1436 | 0xfe00, | |
1437 | FALSE), | |
1b786873 | 1438 | |
8c163c5a SL |
1439 | HOWTO (R_NIOS2_R2_T2I4, |
1440 | 0, | |
1441 | 1, | |
1442 | 4, | |
1443 | FALSE, | |
1444 | 12, | |
1445 | complain_overflow_unsigned, | |
1446 | bfd_elf_generic_reloc, | |
1447 | "R_NIOS2_R2_T2I4", | |
1448 | FALSE, | |
1449 | 0xf000, | |
1450 | 0xf000, | |
1451 | FALSE), | |
1452 | ||
1453 | HOWTO (R_NIOS2_R2_T2I4_1, | |
1454 | 1, | |
1455 | 1, | |
1456 | 4, | |
1457 | FALSE, | |
1458 | 12, | |
1459 | complain_overflow_unsigned, | |
1460 | bfd_elf_generic_reloc, | |
1461 | "R_NIOS2_R2_T2I4_1", | |
1462 | FALSE, | |
1463 | 0xf000, | |
1464 | 0xf000, | |
1465 | FALSE), | |
1466 | ||
1467 | HOWTO (R_NIOS2_R2_T2I4_2, | |
1468 | 2, | |
1469 | 1, | |
1470 | 4, | |
1471 | FALSE, | |
1472 | 12, | |
1473 | complain_overflow_unsigned, | |
1474 | bfd_elf_generic_reloc, | |
1475 | "R_NIOS2_R2_T2I4_2", | |
1476 | FALSE, | |
1477 | 0xf000, | |
1478 | 0xf000, | |
1479 | FALSE), | |
1480 | ||
1481 | HOWTO (R_NIOS2_R2_X1I7_2, | |
1482 | 2, | |
1483 | 1, | |
1484 | 7, | |
1485 | FALSE, | |
1486 | 6, | |
1487 | complain_overflow_unsigned, | |
1488 | bfd_elf_generic_reloc, | |
1489 | "R_NIOS2_R2_X1I7_2", | |
1490 | FALSE, | |
1491 | 0x1fc0, | |
1492 | 0x1fc0, | |
1493 | FALSE), | |
1b786873 | 1494 | |
8c163c5a SL |
1495 | HOWTO (R_NIOS2_R2_X2L5, |
1496 | 0, | |
1497 | 1, | |
1498 | 5, | |
1499 | FALSE, | |
1500 | 6, | |
1501 | complain_overflow_unsigned, | |
1502 | bfd_elf_generic_reloc, | |
1503 | "R_NIOS2_R2_X2L5", | |
1504 | FALSE, | |
1505 | 0x07c0, | |
1506 | 0x07c0, | |
1507 | FALSE), | |
1b786873 | 1508 | |
8c163c5a SL |
1509 | HOWTO (R_NIOS2_R2_F1I5_2, |
1510 | 2, | |
1511 | 1, | |
1512 | 5, | |
1513 | FALSE, | |
1514 | 6, | |
1515 | complain_overflow_unsigned, | |
1516 | bfd_elf_generic_reloc, | |
1517 | "R_NIOS2_R2_F1L5_2", | |
1518 | FALSE, | |
1519 | 0x07c0, | |
1520 | 0x07c0, | |
1521 | FALSE), | |
1522 | ||
1523 | HOWTO (R_NIOS2_R2_L5I4X1, | |
1524 | 2, | |
1525 | 1, | |
1526 | 4, | |
1527 | FALSE, | |
1528 | 6, | |
1529 | complain_overflow_unsigned, | |
1530 | bfd_elf_generic_reloc, | |
1531 | "R_NIOS2_R2_L5I4X1", | |
1532 | FALSE, | |
1533 | 0x03c0, | |
1534 | 0x03c0, | |
1535 | FALSE), | |
1536 | ||
1537 | HOWTO (R_NIOS2_R2_T1X1I6, | |
1538 | 0, | |
1539 | 1, | |
1540 | 6, | |
1541 | FALSE, | |
1542 | 9, | |
1543 | complain_overflow_unsigned, | |
1544 | bfd_elf_generic_reloc, | |
1545 | "R_NIOS2_R2_T1X1I6", | |
1546 | FALSE, | |
1547 | 0x7e00, | |
1548 | 0x7e00, | |
1549 | FALSE), | |
1b786873 | 1550 | |
8c163c5a SL |
1551 | HOWTO (R_NIOS2_R2_T1X1I6_2, |
1552 | 2, | |
1553 | 2, | |
1554 | 6, | |
1555 | FALSE, | |
1556 | 9, | |
1557 | complain_overflow_unsigned, | |
1558 | bfd_elf_generic_reloc, | |
1559 | "R_NIOS2_R2_T1I1X6_2", | |
1560 | FALSE, | |
1561 | 0x7e00, | |
1562 | 0x7e00, | |
1563 | FALSE), | |
1b786873 | 1564 | |
8c163c5a SL |
1565 | /* Add other relocations here. */ |
1566 | }; | |
1567 | ||
36591ba1 SL |
1568 | static unsigned char elf_code_to_howto_index[R_NIOS2_ILLEGAL + 1]; |
1569 | ||
8c163c5a SL |
1570 | |
1571 | /* Return true if producing output for a R2 BFD. */ | |
1572 | #define BFD_IS_R2(abfd) (bfd_get_mach (abfd) == bfd_mach_nios2r2) | |
1573 | ||
36591ba1 SL |
1574 | /* Return the howto for relocation RTYPE. */ |
1575 | static reloc_howto_type * | |
8c163c5a | 1576 | lookup_howto (unsigned int rtype, bfd *abfd) |
36591ba1 SL |
1577 | { |
1578 | static int initialized = 0; | |
1579 | int i; | |
8c163c5a SL |
1580 | /* R2 relocations are a superset of R1, so use that for the lookup |
1581 | table. */ | |
f3185997 NC |
1582 | int r1_howto_tbl_size = (int) ARRAY_SIZE (elf_nios2_r1_howto_table_rel); |
1583 | int r2_howto_tbl_size = (int) ARRAY_SIZE (elf_nios2_r2_howto_table_rel); | |
36591ba1 SL |
1584 | |
1585 | if (!initialized) | |
1586 | { | |
1587 | initialized = 1; | |
1588 | memset (elf_code_to_howto_index, 0xff, | |
1589 | sizeof (elf_code_to_howto_index)); | |
8c163c5a SL |
1590 | for (i = 0; i < r2_howto_tbl_size; i++) |
1591 | { | |
1592 | elf_code_to_howto_index[elf_nios2_r2_howto_table_rel[i].type] = i; | |
1593 | if (i < r1_howto_tbl_size) | |
1594 | BFD_ASSERT (elf_nios2_r2_howto_table_rel[i].type | |
1595 | == elf_nios2_r1_howto_table_rel[i].type); | |
1596 | } | |
36591ba1 SL |
1597 | } |
1598 | ||
f3185997 NC |
1599 | if (rtype > R_NIOS2_ILLEGAL) |
1600 | return NULL; | |
36591ba1 | 1601 | i = elf_code_to_howto_index[rtype]; |
8c163c5a SL |
1602 | if (BFD_IS_R2 (abfd)) |
1603 | { | |
1604 | if (i >= r2_howto_tbl_size) | |
f3185997 | 1605 | return NULL; |
8c163c5a SL |
1606 | return elf_nios2_r2_howto_table_rel + i; |
1607 | } | |
1608 | else | |
1609 | { | |
1610 | if (i >= r1_howto_tbl_size) | |
f3185997 | 1611 | return NULL; |
8c163c5a SL |
1612 | return elf_nios2_r1_howto_table_rel + i; |
1613 | } | |
36591ba1 SL |
1614 | } |
1615 | ||
1616 | /* Map for converting BFD reloc types to Nios II reloc types. */ | |
1617 | struct elf_reloc_map | |
1618 | { | |
1619 | bfd_reloc_code_real_type bfd_val; | |
1620 | enum elf_nios2_reloc_type elf_val; | |
1621 | }; | |
1622 | ||
f3185997 NC |
1623 | static const struct elf_reloc_map nios2_reloc_map[] = |
1624 | { | |
0ba38529 | 1625 | {BFD_RELOC_NONE, R_NIOS2_NONE}, |
36591ba1 SL |
1626 | {BFD_RELOC_NIOS2_S16, R_NIOS2_S16}, |
1627 | {BFD_RELOC_NIOS2_U16, R_NIOS2_U16}, | |
1628 | {BFD_RELOC_16_PCREL, R_NIOS2_PCREL16}, | |
1629 | {BFD_RELOC_NIOS2_CALL26, R_NIOS2_CALL26}, | |
1630 | {BFD_RELOC_NIOS2_IMM5, R_NIOS2_IMM5}, | |
1631 | {BFD_RELOC_NIOS2_CACHE_OPX, R_NIOS2_CACHE_OPX}, | |
1632 | {BFD_RELOC_NIOS2_IMM6, R_NIOS2_IMM6}, | |
1633 | {BFD_RELOC_NIOS2_IMM8, R_NIOS2_IMM8}, | |
1634 | {BFD_RELOC_NIOS2_HI16, R_NIOS2_HI16}, | |
1635 | {BFD_RELOC_NIOS2_LO16, R_NIOS2_LO16}, | |
1636 | {BFD_RELOC_NIOS2_HIADJ16, R_NIOS2_HIADJ16}, | |
1637 | {BFD_RELOC_32, R_NIOS2_BFD_RELOC_32}, | |
1638 | {BFD_RELOC_16, R_NIOS2_BFD_RELOC_16}, | |
1639 | {BFD_RELOC_8, R_NIOS2_BFD_RELOC_8}, | |
1640 | {BFD_RELOC_NIOS2_GPREL, R_NIOS2_GPREL}, | |
1641 | {BFD_RELOC_VTABLE_INHERIT, R_NIOS2_GNU_VTINHERIT}, | |
1642 | {BFD_RELOC_VTABLE_ENTRY, R_NIOS2_GNU_VTENTRY}, | |
1643 | {BFD_RELOC_NIOS2_UJMP, R_NIOS2_UJMP}, | |
1644 | {BFD_RELOC_NIOS2_CJMP, R_NIOS2_CJMP}, | |
1645 | {BFD_RELOC_NIOS2_CALLR, R_NIOS2_CALLR}, | |
1646 | {BFD_RELOC_NIOS2_ALIGN, R_NIOS2_ALIGN}, | |
1647 | {BFD_RELOC_NIOS2_GOT16, R_NIOS2_GOT16}, | |
1648 | {BFD_RELOC_NIOS2_CALL16, R_NIOS2_CALL16}, | |
1649 | {BFD_RELOC_NIOS2_GOTOFF_LO, R_NIOS2_GOTOFF_LO}, | |
1650 | {BFD_RELOC_NIOS2_GOTOFF_HA, R_NIOS2_GOTOFF_HA}, | |
1651 | {BFD_RELOC_NIOS2_PCREL_LO, R_NIOS2_PCREL_LO}, | |
1652 | {BFD_RELOC_NIOS2_PCREL_HA, R_NIOS2_PCREL_HA}, | |
1653 | {BFD_RELOC_NIOS2_TLS_GD16, R_NIOS2_TLS_GD16}, | |
1654 | {BFD_RELOC_NIOS2_TLS_LDM16, R_NIOS2_TLS_LDM16}, | |
1655 | {BFD_RELOC_NIOS2_TLS_LDO16, R_NIOS2_TLS_LDO16}, | |
1656 | {BFD_RELOC_NIOS2_TLS_IE16, R_NIOS2_TLS_IE16}, | |
1657 | {BFD_RELOC_NIOS2_TLS_LE16, R_NIOS2_TLS_LE16}, | |
1658 | {BFD_RELOC_NIOS2_TLS_DTPMOD, R_NIOS2_TLS_DTPMOD}, | |
1659 | {BFD_RELOC_NIOS2_TLS_DTPREL, R_NIOS2_TLS_DTPREL}, | |
1660 | {BFD_RELOC_NIOS2_TLS_TPREL, R_NIOS2_TLS_TPREL}, | |
1661 | {BFD_RELOC_NIOS2_COPY, R_NIOS2_COPY}, | |
1662 | {BFD_RELOC_NIOS2_GLOB_DAT, R_NIOS2_GLOB_DAT}, | |
1663 | {BFD_RELOC_NIOS2_JUMP_SLOT, R_NIOS2_JUMP_SLOT}, | |
1664 | {BFD_RELOC_NIOS2_RELATIVE, R_NIOS2_RELATIVE}, | |
78058a5e SL |
1665 | {BFD_RELOC_NIOS2_GOTOFF, R_NIOS2_GOTOFF}, |
1666 | {BFD_RELOC_NIOS2_CALL26_NOAT, R_NIOS2_CALL26_NOAT}, | |
1c2de463 SL |
1667 | {BFD_RELOC_NIOS2_GOT_LO, R_NIOS2_GOT_LO}, |
1668 | {BFD_RELOC_NIOS2_GOT_HA, R_NIOS2_GOT_HA}, | |
1669 | {BFD_RELOC_NIOS2_CALL_LO, R_NIOS2_CALL_LO}, | |
1670 | {BFD_RELOC_NIOS2_CALL_HA, R_NIOS2_CALL_HA}, | |
8c163c5a SL |
1671 | {BFD_RELOC_NIOS2_R2_S12, R_NIOS2_R2_S12}, |
1672 | {BFD_RELOC_NIOS2_R2_I10_1_PCREL, R_NIOS2_R2_I10_1_PCREL}, | |
1673 | {BFD_RELOC_NIOS2_R2_T1I7_1_PCREL, R_NIOS2_R2_T1I7_1_PCREL}, | |
1674 | {BFD_RELOC_NIOS2_R2_T1I7_2, R_NIOS2_R2_T1I7_2}, | |
1675 | {BFD_RELOC_NIOS2_R2_T2I4, R_NIOS2_R2_T2I4}, | |
1676 | {BFD_RELOC_NIOS2_R2_T2I4_1, R_NIOS2_R2_T2I4_1}, | |
1677 | {BFD_RELOC_NIOS2_R2_T2I4_2, R_NIOS2_R2_T2I4_2}, | |
1678 | {BFD_RELOC_NIOS2_R2_X1I7_2, R_NIOS2_R2_X1I7_2}, | |
1679 | {BFD_RELOC_NIOS2_R2_X2L5, R_NIOS2_R2_X2L5}, | |
1680 | {BFD_RELOC_NIOS2_R2_F1I5_2, R_NIOS2_R2_F1I5_2}, | |
1681 | {BFD_RELOC_NIOS2_R2_L5I4X1, R_NIOS2_R2_L5I4X1}, | |
1682 | {BFD_RELOC_NIOS2_R2_T1X1I6, R_NIOS2_R2_T1X1I6}, | |
1683 | {BFD_RELOC_NIOS2_R2_T1X1I6_2, R_NIOS2_R2_T1X1I6_2}, | |
78058a5e SL |
1684 | }; |
1685 | ||
1686 | enum elf32_nios2_stub_type | |
1687 | { | |
1688 | nios2_stub_call26_before, | |
1689 | nios2_stub_call26_after, | |
1690 | nios2_stub_none | |
1691 | }; | |
1692 | ||
1693 | struct elf32_nios2_stub_hash_entry | |
1694 | { | |
1695 | /* Base hash table entry structure. */ | |
1696 | struct bfd_hash_entry bh_root; | |
1697 | ||
1698 | /* The stub section. */ | |
1699 | asection *stub_sec; | |
1700 | ||
1701 | /* Offset within stub_sec of the beginning of this stub. */ | |
1702 | bfd_vma stub_offset; | |
1703 | ||
1704 | /* Given the symbol's value and its section we can determine its final | |
1705 | value when building the stubs (so the stub knows where to jump. */ | |
1706 | bfd_vma target_value; | |
1707 | asection *target_section; | |
1708 | ||
1709 | enum elf32_nios2_stub_type stub_type; | |
1710 | ||
1711 | /* The symbol table entry, if any, that this was derived from. */ | |
1712 | struct elf32_nios2_link_hash_entry *hh; | |
1713 | ||
1714 | /* And the reloc addend that this was derived from. */ | |
1715 | bfd_vma addend; | |
1716 | ||
1717 | /* Where this stub is being called from, or, in the case of combined | |
1718 | stub sections, the first input section in the group. */ | |
1719 | asection *id_sec; | |
36591ba1 SL |
1720 | }; |
1721 | ||
78058a5e SL |
1722 | #define nios2_stub_hash_entry(ent) \ |
1723 | ((struct elf32_nios2_stub_hash_entry *)(ent)) | |
1724 | ||
1725 | #define nios2_stub_hash_lookup(table, string, create, copy) \ | |
1726 | ((struct elf32_nios2_stub_hash_entry *) \ | |
1727 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
1728 | ||
1729 | ||
36591ba1 SL |
1730 | /* Nios II ELF linker hash entry. */ |
1731 | ||
1732 | struct elf32_nios2_link_hash_entry | |
1733 | { | |
1734 | struct elf_link_hash_entry root; | |
1735 | ||
78058a5e SL |
1736 | /* A pointer to the most recently used stub hash entry against this |
1737 | symbol. */ | |
1738 | struct elf32_nios2_stub_hash_entry *hsh_cache; | |
1739 | ||
36591ba1 SL |
1740 | #define GOT_UNKNOWN 0 |
1741 | #define GOT_NORMAL 1 | |
1742 | #define GOT_TLS_GD 2 | |
1743 | #define GOT_TLS_IE 4 | |
1744 | unsigned char tls_type; | |
1745 | ||
1746 | /* We need to detect and take special action for symbols which are only | |
1747 | referenced with %call() and not with %got(). Such symbols do not need | |
1748 | a dynamic GOT reloc in shared objects, only a dynamic PLT reloc. Lazy | |
1749 | linking will not work if the dynamic GOT reloc exists. | |
1750 | To check for this condition efficiently, we compare got_types_used against | |
1c2de463 SL |
1751 | CALL_USED, meaning |
1752 | (got_types_used & (GOT_USED | CALL_USED)) == CALL_USED. | |
1753 | */ | |
1754 | #define GOT_USED 1 | |
1755 | #define CALL_USED 2 | |
36591ba1 SL |
1756 | unsigned char got_types_used; |
1757 | }; | |
1758 | ||
1759 | #define elf32_nios2_hash_entry(ent) \ | |
1760 | ((struct elf32_nios2_link_hash_entry *) (ent)) | |
1761 | ||
1762 | /* Get the Nios II elf linker hash table from a link_info structure. */ | |
1763 | #define elf32_nios2_hash_table(info) \ | |
1764 | ((struct elf32_nios2_link_hash_table *) ((info)->hash)) | |
1765 | ||
1766 | /* Nios II ELF linker hash table. */ | |
1767 | struct elf32_nios2_link_hash_table | |
1768 | { | |
1769 | /* The main hash table. */ | |
1770 | struct elf_link_hash_table root; | |
1771 | ||
78058a5e SL |
1772 | /* The stub hash table. */ |
1773 | struct bfd_hash_table bstab; | |
1774 | ||
1775 | /* Linker stub bfd. */ | |
1776 | bfd *stub_bfd; | |
1777 | ||
1778 | /* Linker call-backs. */ | |
1779 | asection * (*add_stub_section) (const char *, asection *, bfd_boolean); | |
1780 | void (*layout_sections_again) (void); | |
1781 | ||
1782 | /* Array to keep track of which stub sections have been created, and | |
1783 | information on stub grouping. */ | |
1784 | struct map_stub | |
1785 | { | |
1786 | /* These are the section to which stubs in the group will be | |
1787 | attached. */ | |
1788 | asection *first_sec, *last_sec; | |
1789 | /* The stub sections. There might be stubs inserted either before | |
1790 | or after the real section.*/ | |
1791 | asection *first_stub_sec, *last_stub_sec; | |
1792 | } *stub_group; | |
1793 | ||
1794 | /* Assorted information used by nios2_elf32_size_stubs. */ | |
1795 | unsigned int bfd_count; | |
7292b3ac | 1796 | unsigned int top_index; |
78058a5e SL |
1797 | asection **input_list; |
1798 | Elf_Internal_Sym **all_local_syms; | |
1799 | ||
36591ba1 | 1800 | /* Short-cuts to get to dynamic linker sections. */ |
36591ba1 SL |
1801 | asection *sbss; |
1802 | ||
82e91538 SL |
1803 | /* GOT pointer symbol _gp_got. */ |
1804 | struct elf_link_hash_entry *h_gp_got; | |
1805 | ||
36591ba1 SL |
1806 | union { |
1807 | bfd_signed_vma refcount; | |
1808 | bfd_vma offset; | |
1809 | } tls_ldm_got; | |
1810 | ||
1811 | /* Small local sym cache. */ | |
1812 | struct sym_cache sym_cache; | |
1813 | ||
1814 | bfd_vma res_n_size; | |
1815 | }; | |
1816 | ||
1817 | struct nios2_elf32_obj_tdata | |
1818 | { | |
1819 | struct elf_obj_tdata root; | |
1820 | ||
1821 | /* tls_type for each local got entry. */ | |
1822 | char *local_got_tls_type; | |
1823 | ||
1824 | /* TRUE if TLS GD relocs have been seen for this object. */ | |
1825 | bfd_boolean has_tlsgd; | |
1826 | }; | |
1827 | ||
1828 | #define elf32_nios2_tdata(abfd) \ | |
1829 | ((struct nios2_elf32_obj_tdata *) (abfd)->tdata.any) | |
1830 | ||
1831 | #define elf32_nios2_local_got_tls_type(abfd) \ | |
1832 | (elf32_nios2_tdata (abfd)->local_got_tls_type) | |
1833 | ||
1834 | /* The name of the dynamic interpreter. This is put in the .interp | |
1835 | section. */ | |
1836 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
1837 | ||
1838 | /* PLT implementation for position-dependent code. */ | |
1839 | static const bfd_vma nios2_plt_entry[] = { /* .PLTn: */ | |
1840 | 0x03c00034, /* movhi r15, %hiadj(plt_got_slot_address) */ | |
1841 | 0x7bc00017, /* ldw r15, %lo(plt_got_slot_address)(r15) */ | |
1842 | 0x7800683a /* jmp r15 */ | |
1843 | }; | |
1844 | ||
1845 | static const bfd_vma nios2_plt0_entry[] = { /* .PLTresolve */ | |
1846 | 0x03800034, /* movhi r14, %hiadj(res_0) */ | |
1847 | 0x73800004, /* addi r14, r14, %lo(res_0) */ | |
1848 | 0x7b9fc83a, /* sub r15, r15, r14 */ | |
1849 | 0x03400034, /* movhi r13, %hiadj(_GLOBAL_OFFSET_TABLE_) */ | |
1850 | 0x6b800017, /* ldw r14, %lo(_GLOBAL_OFFSET_TABLE_+4)(r13) */ | |
1851 | 0x6b400017, /* ldw r13, %lo(_GLOBAL_OFFSET_TABLE_+8)(r13) */ | |
1852 | 0x6800683a /* jmp r13 */ | |
1853 | }; | |
1854 | ||
1855 | /* PLT implementation for position-independent code. */ | |
1856 | static const bfd_vma nios2_so_plt_entry[] = { /* .PLTn */ | |
1857 | 0x03c00034, /* movhi r15, %hiadj(index * 4) */ | |
1858 | 0x7bc00004, /* addi r15, r15, %lo(index * 4) */ | |
1859 | 0x00000006 /* br .PLTresolve */ | |
1860 | }; | |
1861 | ||
1862 | static const bfd_vma nios2_so_plt0_entry[] = { /* .PLTresolve */ | |
1863 | 0x001ce03a, /* nextpc r14 */ | |
1864 | 0x03400034, /* movhi r13, %hiadj(_GLOBAL_OFFSET_TABLE_) */ | |
1865 | 0x6b9b883a, /* add r13, r13, r14 */ | |
1866 | 0x6b800017, /* ldw r14, %lo(_GLOBAL_OFFSET_TABLE_+4)(r13) */ | |
1867 | 0x6b400017, /* ldw r13, %lo(_GLOBAL_OFFSET_TABLE_+8)(r13) */ | |
1868 | 0x6800683a /* jmp r13 */ | |
1869 | }; | |
1870 | ||
78058a5e SL |
1871 | /* CALL26 stub. */ |
1872 | static const bfd_vma nios2_call26_stub_entry[] = { | |
1873 | 0x00400034, /* orhi at, r0, %hiadj(dest) */ | |
1874 | 0x08400004, /* addi at, at, %lo(dest) */ | |
1875 | 0x0800683a /* jmp at */ | |
1876 | }; | |
1877 | ||
1878 | /* Install 16-bit immediate value VALUE at offset OFFSET into section SEC. */ | |
1879 | static void | |
1880 | nios2_elf32_install_imm16 (asection *sec, bfd_vma offset, bfd_vma value) | |
1881 | { | |
1882 | bfd_vma word = bfd_get_32 (sec->owner, sec->contents + offset); | |
1883 | ||
83da6e74 | 1884 | BFD_ASSERT (value <= 0xffff || ((bfd_signed_vma) value) >= -0xffff); |
78058a5e SL |
1885 | |
1886 | bfd_put_32 (sec->owner, word | ((value & 0xffff) << 6), | |
1887 | sec->contents + offset); | |
1888 | } | |
1889 | ||
1890 | /* Install COUNT 32-bit values DATA starting at offset OFFSET into | |
1891 | section SEC. */ | |
1892 | static void | |
1893 | nios2_elf32_install_data (asection *sec, const bfd_vma *data, bfd_vma offset, | |
1894 | int count) | |
1895 | { | |
1896 | while (count--) | |
1897 | { | |
1898 | bfd_put_32 (sec->owner, *data, sec->contents + offset); | |
1899 | offset += 4; | |
1900 | ++data; | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | /* The usual way of loading a 32-bit constant into a Nios II register is to | |
1905 | load the high 16 bits in one instruction and then add the low 16 bits with | |
1906 | a signed add. This means that the high halfword needs to be adjusted to | |
1907 | compensate for the sign bit of the low halfword. This function returns the | |
1908 | adjusted high halfword for a given 32-bit constant. */ | |
1909 | static | |
1910 | bfd_vma hiadj (bfd_vma symbol_value) | |
1911 | { | |
1912 | return ((symbol_value + 0x8000) >> 16) & 0xffff; | |
1913 | } | |
1914 | ||
36591ba1 SL |
1915 | /* Implement elf_backend_grok_prstatus: |
1916 | Support for core dump NOTE sections. */ | |
1917 | static bfd_boolean | |
1918 | nios2_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1919 | { | |
1920 | int offset; | |
1921 | size_t size; | |
1922 | ||
1923 | switch (note->descsz) | |
1924 | { | |
1925 | default: | |
1926 | return FALSE; | |
1927 | ||
1928 | case 212: /* Linux/Nios II */ | |
1929 | /* pr_cursig */ | |
228e534f | 1930 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
36591ba1 SL |
1931 | |
1932 | /* pr_pid */ | |
228e534f | 1933 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); |
36591ba1 SL |
1934 | |
1935 | /* pr_reg */ | |
1936 | offset = 72; | |
1937 | size = 136; | |
1938 | ||
1939 | break; | |
1940 | } | |
1941 | ||
1942 | /* Make a ".reg/999" section. */ | |
1943 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1944 | size, note->descpos + offset); | |
1945 | } | |
1946 | ||
1947 | /* Implement elf_backend_grok_psinfo. */ | |
1948 | static bfd_boolean | |
1949 | nios2_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1950 | { | |
1951 | switch (note->descsz) | |
1952 | { | |
1953 | default: | |
1954 | return FALSE; | |
1955 | ||
1956 | case 124: /* Linux/Nios II elf_prpsinfo */ | |
228e534f | 1957 | elf_tdata (abfd)->core->program |
36591ba1 | 1958 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 1959 | elf_tdata (abfd)->core->command |
36591ba1 SL |
1960 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
1961 | } | |
1962 | ||
1963 | /* Note that for some reason, a spurious space is tacked | |
1964 | onto the end of the args in some (at least one anyway) | |
1965 | implementations, so strip it off if it exists. */ | |
1966 | ||
1967 | { | |
228e534f | 1968 | char *command = elf_tdata (abfd)->core->command; |
36591ba1 SL |
1969 | int n = strlen (command); |
1970 | ||
1971 | if (0 < n && command[n - 1] == ' ') | |
1972 | command[n - 1] = '\0'; | |
1973 | } | |
1974 | ||
1975 | return TRUE; | |
1976 | } | |
1977 | ||
78058a5e SL |
1978 | /* Assorted hash table functions. */ |
1979 | ||
1980 | /* Initialize an entry in the stub hash table. */ | |
1981 | static struct bfd_hash_entry * | |
1982 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
1983 | struct bfd_hash_table *table, | |
1984 | const char *string) | |
1985 | { | |
1986 | /* Allocate the structure if it has not already been allocated by a | |
1987 | subclass. */ | |
1988 | if (entry == NULL) | |
1989 | { | |
1990 | entry = bfd_hash_allocate (table, | |
1991 | sizeof (struct elf32_nios2_stub_hash_entry)); | |
1992 | if (entry == NULL) | |
1993 | return entry; | |
1994 | } | |
1995 | ||
1996 | /* Call the allocation method of the superclass. */ | |
1997 | entry = bfd_hash_newfunc (entry, table, string); | |
1998 | if (entry != NULL) | |
1999 | { | |
2000 | struct elf32_nios2_stub_hash_entry *hsh; | |
2001 | ||
2002 | /* Initialize the local fields. */ | |
2003 | hsh = (struct elf32_nios2_stub_hash_entry *) entry; | |
2004 | hsh->stub_sec = NULL; | |
2005 | hsh->stub_offset = 0; | |
2006 | hsh->target_value = 0; | |
2007 | hsh->target_section = NULL; | |
2008 | hsh->stub_type = nios2_stub_none; | |
2009 | hsh->hh = NULL; | |
2010 | hsh->id_sec = NULL; | |
2011 | } | |
2012 | ||
2013 | return entry; | |
2014 | } | |
2015 | ||
36591ba1 SL |
2016 | /* Create an entry in a Nios II ELF linker hash table. */ |
2017 | static struct bfd_hash_entry * | |
2018 | link_hash_newfunc (struct bfd_hash_entry *entry, | |
2019 | struct bfd_hash_table *table, const char *string) | |
2020 | { | |
2021 | /* Allocate the structure if it has not already been allocated by a | |
2022 | subclass. */ | |
2023 | if (entry == NULL) | |
2024 | { | |
2025 | entry = bfd_hash_allocate (table, | |
2026 | sizeof (struct elf32_nios2_link_hash_entry)); | |
2027 | if (entry == NULL) | |
2028 | return entry; | |
2029 | } | |
2030 | ||
2031 | /* Call the allocation method of the superclass. */ | |
2032 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2033 | if (entry) | |
2034 | { | |
2035 | struct elf32_nios2_link_hash_entry *eh; | |
2036 | ||
2037 | eh = (struct elf32_nios2_link_hash_entry *) entry; | |
78058a5e | 2038 | eh->hsh_cache = NULL; |
36591ba1 SL |
2039 | eh->tls_type = GOT_UNKNOWN; |
2040 | eh->got_types_used = 0; | |
2041 | } | |
2042 | ||
2043 | return entry; | |
2044 | } | |
2045 | ||
78058a5e SL |
2046 | /* Section name for stubs is the associated section name plus this |
2047 | string. */ | |
2048 | #define STUB_SUFFIX ".stub" | |
2049 | ||
2050 | /* Build a name for an entry in the stub hash table. */ | |
2051 | static char * | |
2052 | nios2_stub_name (const asection *input_section, | |
2053 | const asection *sym_sec, | |
2054 | const struct elf32_nios2_link_hash_entry *hh, | |
2055 | const Elf_Internal_Rela *rel, | |
2056 | enum elf32_nios2_stub_type stub_type) | |
2057 | { | |
2058 | char *stub_name; | |
2059 | bfd_size_type len; | |
2060 | char stubpos = (stub_type == nios2_stub_call26_before) ? 'b' : 'a'; | |
2061 | ||
2062 | if (hh) | |
2063 | { | |
2064 | len = 8 + 1 + 1 + 1+ strlen (hh->root.root.root.string) + 1 + 8 + 1; | |
2065 | stub_name = bfd_malloc (len); | |
2066 | if (stub_name != NULL) | |
2067 | { | |
2068 | sprintf (stub_name, "%08x_%c_%s+%x", | |
2069 | input_section->id & 0xffffffff, | |
2070 | stubpos, | |
2071 | hh->root.root.root.string, | |
2072 | (int) rel->r_addend & 0xffffffff); | |
2073 | } | |
2074 | } | |
2075 | else | |
2076 | { | |
2077 | len = 8 + 1 + 1 + 1+ 8 + 1 + 8 + 1 + 8 + 1; | |
2078 | stub_name = bfd_malloc (len); | |
2079 | if (stub_name != NULL) | |
2080 | { | |
2081 | sprintf (stub_name, "%08x_%c_%x:%x+%x", | |
2082 | input_section->id & 0xffffffff, | |
2083 | stubpos, | |
2084 | sym_sec->id & 0xffffffff, | |
2085 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
2086 | (int) rel->r_addend & 0xffffffff); | |
2087 | } | |
2088 | } | |
2089 | return stub_name; | |
2090 | } | |
2091 | ||
2092 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2093 | creating the stub name takes a bit of time. */ | |
2094 | static struct elf32_nios2_stub_hash_entry * | |
2095 | nios2_get_stub_entry (const asection *input_section, | |
2096 | const asection *sym_sec, | |
2097 | struct elf32_nios2_link_hash_entry *hh, | |
2098 | const Elf_Internal_Rela *rel, | |
2099 | struct elf32_nios2_link_hash_table *htab, | |
2100 | enum elf32_nios2_stub_type stub_type) | |
2101 | { | |
2102 | struct elf32_nios2_stub_hash_entry *hsh; | |
2103 | const asection *id_sec; | |
2104 | ||
2105 | /* If this input section is part of a group of sections sharing one | |
2106 | stub section, then use the id of the first/last section in the group, | |
2107 | depending on the stub section placement relative to the group. | |
2108 | Stub names need to include a section id, as there may well be | |
2109 | more than one stub used to reach say, printf, and we need to | |
2110 | distinguish between them. */ | |
2111 | if (stub_type == nios2_stub_call26_before) | |
2112 | id_sec = htab->stub_group[input_section->id].first_sec; | |
2113 | else | |
2114 | id_sec = htab->stub_group[input_section->id].last_sec; | |
2115 | ||
2116 | if (hh != NULL && hh->hsh_cache != NULL | |
2117 | && hh->hsh_cache->hh == hh | |
2118 | && hh->hsh_cache->id_sec == id_sec | |
2119 | && hh->hsh_cache->stub_type == stub_type) | |
2120 | { | |
2121 | hsh = hh->hsh_cache; | |
2122 | } | |
2123 | else | |
2124 | { | |
2125 | char *stub_name; | |
2126 | ||
2127 | stub_name = nios2_stub_name (id_sec, sym_sec, hh, rel, stub_type); | |
2128 | if (stub_name == NULL) | |
2129 | return NULL; | |
2130 | ||
2131 | hsh = nios2_stub_hash_lookup (&htab->bstab, | |
2132 | stub_name, FALSE, FALSE); | |
2133 | ||
2134 | if (hh != NULL) | |
2135 | hh->hsh_cache = hsh; | |
2136 | ||
2137 | free (stub_name); | |
2138 | } | |
2139 | ||
2140 | return hsh; | |
2141 | } | |
2142 | ||
2143 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
2144 | stub entry are initialised. */ | |
2145 | static struct elf32_nios2_stub_hash_entry * | |
2146 | nios2_add_stub (const char *stub_name, | |
2147 | asection *section, | |
2148 | struct elf32_nios2_link_hash_table *htab, | |
2149 | enum elf32_nios2_stub_type stub_type) | |
2150 | { | |
2151 | asection *link_sec; | |
2152 | asection *stub_sec; | |
2153 | asection **secptr, **linkptr; | |
2154 | struct elf32_nios2_stub_hash_entry *hsh; | |
2155 | bfd_boolean afterp; | |
2156 | ||
2157 | if (stub_type == nios2_stub_call26_before) | |
2158 | { | |
2159 | link_sec = htab->stub_group[section->id].first_sec; | |
2160 | secptr = &(htab->stub_group[section->id].first_stub_sec); | |
2161 | linkptr = &(htab->stub_group[link_sec->id].first_stub_sec); | |
2162 | afterp = FALSE; | |
2163 | } | |
2164 | else | |
2165 | { | |
2166 | link_sec = htab->stub_group[section->id].last_sec; | |
2167 | secptr = &(htab->stub_group[section->id].last_stub_sec); | |
2168 | linkptr = &(htab->stub_group[link_sec->id].last_stub_sec); | |
2169 | afterp = TRUE; | |
2170 | } | |
2171 | stub_sec = *secptr; | |
2172 | if (stub_sec == NULL) | |
2173 | { | |
2174 | stub_sec = *linkptr; | |
2175 | if (stub_sec == NULL) | |
2176 | { | |
2177 | size_t namelen; | |
2178 | bfd_size_type len; | |
2179 | char *s_name; | |
2180 | ||
2181 | namelen = strlen (link_sec->name); | |
2182 | len = namelen + sizeof (STUB_SUFFIX); | |
2183 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2184 | if (s_name == NULL) | |
2185 | return NULL; | |
2186 | ||
2187 | memcpy (s_name, link_sec->name, namelen); | |
2188 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
2189 | ||
2190 | stub_sec = (*htab->add_stub_section) (s_name, link_sec, afterp); | |
2191 | if (stub_sec == NULL) | |
2192 | return NULL; | |
2193 | *linkptr = stub_sec; | |
2194 | } | |
2195 | *secptr = stub_sec; | |
2196 | } | |
2197 | ||
2198 | /* Enter this entry into the linker stub hash table. */ | |
2199 | hsh = nios2_stub_hash_lookup (&htab->bstab, stub_name, | |
2200 | TRUE, FALSE); | |
2201 | if (hsh == NULL) | |
2202 | { | |
695344c0 | 2203 | /* xgettext:c-format */ |
871b3ab2 | 2204 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 AM |
2205 | section->owner, |
2206 | stub_name); | |
78058a5e SL |
2207 | return NULL; |
2208 | } | |
2209 | ||
2210 | hsh->stub_sec = stub_sec; | |
2211 | hsh->stub_offset = 0; | |
2212 | hsh->id_sec = link_sec; | |
2213 | return hsh; | |
2214 | } | |
2215 | ||
2216 | /* Set up various things so that we can make a list of input sections | |
2217 | for each output section included in the link. Returns -1 on error, | |
2218 | 0 when no stubs will be needed, and 1 on success. */ | |
2219 | int | |
2220 | nios2_elf32_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) | |
2221 | { | |
2222 | bfd *input_bfd; | |
2223 | unsigned int bfd_count; | |
7292b3ac | 2224 | unsigned int top_id, top_index; |
78058a5e SL |
2225 | asection *section; |
2226 | asection **input_list, **list; | |
986f0783 | 2227 | size_t amt; |
78058a5e SL |
2228 | struct elf32_nios2_link_hash_table *htab = elf32_nios2_hash_table (info); |
2229 | ||
2230 | /* Count the number of input BFDs and find the top input section id. */ | |
2231 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
2232 | input_bfd != NULL; | |
c72f2fb2 | 2233 | input_bfd = input_bfd->link.next) |
78058a5e SL |
2234 | { |
2235 | bfd_count += 1; | |
2236 | for (section = input_bfd->sections; | |
2237 | section != NULL; | |
2238 | section = section->next) | |
2239 | { | |
2240 | if (top_id < section->id) | |
2241 | top_id = section->id; | |
2242 | } | |
2243 | } | |
2244 | ||
2245 | htab->bfd_count = bfd_count; | |
2246 | ||
2247 | amt = sizeof (struct map_stub) * (top_id + 1); | |
2248 | htab->stub_group = bfd_zmalloc (amt); | |
2249 | if (htab->stub_group == NULL) | |
2250 | return -1; | |
2251 | ||
2252 | /* We can't use output_bfd->section_count here to find the top output | |
2253 | section index as some sections may have been removed, and | |
2254 | strip_excluded_output_sections doesn't renumber the indices. */ | |
2255 | for (section = output_bfd->sections, top_index = 0; | |
2256 | section != NULL; | |
2257 | section = section->next) | |
2258 | { | |
2259 | if (top_index < section->index) | |
2260 | top_index = section->index; | |
2261 | } | |
2262 | ||
2263 | htab->top_index = top_index; | |
2264 | amt = sizeof (asection *) * (top_index + 1); | |
2265 | input_list = bfd_malloc (amt); | |
2266 | htab->input_list = input_list; | |
2267 | if (input_list == NULL) | |
2268 | return -1; | |
2269 | ||
2270 | /* For sections we aren't interested in, mark their entries with a | |
2271 | value we can check later. */ | |
2272 | list = input_list + top_index; | |
2273 | do | |
2274 | *list = bfd_abs_section_ptr; | |
2275 | while (list-- != input_list); | |
2276 | ||
2277 | for (section = output_bfd->sections; | |
2278 | section != NULL; | |
2279 | section = section->next) | |
2280 | { | |
2281 | /* FIXME: This is a bit of hack. Currently our .ctors and .dtors | |
2282 | * have PC relative relocs in them but no code flag set. */ | |
2283 | if (((section->flags & SEC_CODE) != 0) || | |
2284 | strcmp(".ctors", section->name) || | |
2285 | strcmp(".dtors", section->name)) | |
2286 | input_list[section->index] = NULL; | |
2287 | } | |
2288 | ||
2289 | return 1; | |
2290 | } | |
2291 | ||
2292 | /* The linker repeatedly calls this function for each input section, | |
2293 | in the order that input sections are linked into output sections. | |
2294 | Build lists of input sections to determine groupings between which | |
2295 | we may insert linker stubs. */ | |
2296 | void | |
2297 | nios2_elf32_next_input_section (struct bfd_link_info *info, asection *isec) | |
2298 | { | |
2299 | struct elf32_nios2_link_hash_table *htab = elf32_nios2_hash_table (info); | |
2300 | ||
2301 | if (isec->output_section->index <= htab->top_index) | |
2302 | { | |
2303 | asection **list = htab->input_list + isec->output_section->index; | |
2304 | if (*list != bfd_abs_section_ptr) | |
2305 | { | |
2306 | /* Steal the last_sec pointer for our list. | |
2307 | This happens to make the list in reverse order, | |
2308 | which is what we want. */ | |
2309 | htab->stub_group[isec->id].last_sec = *list; | |
2310 | *list = isec; | |
2311 | } | |
2312 | } | |
2313 | } | |
2314 | ||
2315 | /* Segment mask for CALL26 relocation relaxation. */ | |
2316 | #define CALL26_SEGMENT(x) ((x) & 0xf0000000) | |
2317 | ||
2318 | /* Fudge factor for approximate maximum size of all stubs that might | |
2319 | be inserted by the linker. This does not actually limit the number | |
2320 | of stubs that might be inserted, and only affects strategy for grouping | |
2321 | and placement of stubs. Perhaps this should be computed based on number | |
2322 | of relocations seen, or be specifiable on the command line. */ | |
2323 | #define MAX_STUB_SECTION_SIZE 0xffff | |
2324 | ||
2325 | /* See whether we can group stub sections together. Grouping stub | |
2326 | sections may result in fewer stubs. More importantly, we need to | |
2327 | put all .init* and .fini* stubs at the end of the .init or | |
2328 | .fini output sections respectively, because glibc splits the | |
2329 | _init and _fini functions into multiple parts. Putting a stub in | |
2330 | the middle of a function is not a good idea. | |
2331 | Rather than computing groups of a maximum fixed size, for Nios II | |
2332 | CALL26 relaxation it makes more sense to compute the groups based on | |
2333 | sections that fit within a 256MB address segment. Also do not allow | |
2334 | a group to span more than one output section, since different output | |
2335 | sections might correspond to different memory banks on a bare-metal | |
2336 | target, etc. */ | |
2337 | static void | |
2338 | group_sections (struct elf32_nios2_link_hash_table *htab) | |
2339 | { | |
2340 | asection **list = htab->input_list + htab->top_index; | |
2341 | do | |
2342 | { | |
2343 | /* The list is in reverse order so we'll search backwards looking | |
2344 | for the first section that begins in the same memory segment, | |
2345 | marking sections along the way to point at the tail for this | |
2346 | group. */ | |
2347 | asection *tail = *list; | |
2348 | if (tail == bfd_abs_section_ptr) | |
2349 | continue; | |
2350 | while (tail != NULL) | |
2351 | { | |
2352 | bfd_vma start = tail->output_section->vma + tail->output_offset; | |
2353 | bfd_vma end = start + tail->size; | |
2354 | bfd_vma segment = CALL26_SEGMENT (end); | |
2355 | asection *prev; | |
2356 | ||
2357 | if (segment != CALL26_SEGMENT (start) | |
2358 | || segment != CALL26_SEGMENT (end + MAX_STUB_SECTION_SIZE)) | |
2359 | /* This section spans more than one memory segment, or is | |
2360 | close enough to the end of the segment that adding stub | |
2361 | sections before it might cause it to move so that it | |
2362 | spans memory segments, or that stubs added at the end of | |
2363 | this group might overflow into the next memory segment. | |
2364 | Put it in a group by itself to localize the effects. */ | |
2365 | { | |
2366 | prev = htab->stub_group[tail->id].last_sec; | |
2367 | htab->stub_group[tail->id].last_sec = tail; | |
2368 | htab->stub_group[tail->id].first_sec = tail; | |
2369 | } | |
2370 | else | |
2371 | /* Collect more sections for this group. */ | |
2372 | { | |
2373 | asection *curr, *first; | |
2374 | for (curr = tail; ; curr = prev) | |
2375 | { | |
2376 | prev = htab->stub_group[curr->id].last_sec; | |
2377 | if (!prev | |
2378 | || tail->output_section != prev->output_section | |
2379 | || (CALL26_SEGMENT (prev->output_section->vma | |
2380 | + prev->output_offset) | |
2381 | != segment)) | |
2382 | break; | |
2383 | } | |
2384 | first = curr; | |
2385 | for (curr = tail; ; curr = prev) | |
2386 | { | |
2387 | prev = htab->stub_group[curr->id].last_sec; | |
2388 | htab->stub_group[curr->id].last_sec = tail; | |
2389 | htab->stub_group[curr->id].first_sec = first; | |
2390 | if (curr == first) | |
2391 | break; | |
2392 | } | |
2393 | } | |
2394 | ||
2395 | /* Reset tail for the next group. */ | |
2396 | tail = prev; | |
2397 | } | |
2398 | } | |
2399 | while (list-- != htab->input_list); | |
2400 | free (htab->input_list); | |
2401 | } | |
2402 | ||
2403 | /* Determine the type of stub needed, if any, for a call. */ | |
2404 | static enum elf32_nios2_stub_type | |
2405 | nios2_type_of_stub (asection *input_sec, | |
2406 | const Elf_Internal_Rela *rel, | |
2407 | struct elf32_nios2_link_hash_entry *hh, | |
2408 | struct elf32_nios2_link_hash_table *htab, | |
2409 | bfd_vma destination, | |
2410 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2411 | { | |
2412 | bfd_vma location, segment, start, end; | |
2413 | asection *s0, *s1, *s; | |
2414 | ||
2415 | if (hh != NULL && | |
2416 | !(hh->root.root.type == bfd_link_hash_defined | |
2417 | || hh->root.root.type == bfd_link_hash_defweak)) | |
2418 | return nios2_stub_none; | |
2419 | ||
2420 | /* Determine where the call point is. */ | |
2421 | location = (input_sec->output_section->vma | |
2422 | + input_sec->output_offset + rel->r_offset); | |
2423 | segment = CALL26_SEGMENT (location); | |
2424 | ||
2425 | /* Nios II CALL and JMPI instructions can transfer control to addresses | |
2426 | within the same 256MB segment as the PC. */ | |
2427 | if (segment == CALL26_SEGMENT (destination)) | |
2428 | return nios2_stub_none; | |
2429 | ||
2430 | /* Find the start and end addresses of the stub group. Also account for | |
2431 | any already-created stub sections for this group. Note that for stubs | |
2432 | in the end section, only the first instruction of the last stub | |
2433 | (12 bytes long) needs to be within range. */ | |
2434 | s0 = htab->stub_group[input_sec->id].first_sec; | |
2435 | s = htab->stub_group[s0->id].first_stub_sec; | |
2436 | if (s != NULL && s->size > 0) | |
2437 | start = s->output_section->vma + s->output_offset; | |
2438 | else | |
2439 | start = s0->output_section->vma + s0->output_offset; | |
2440 | ||
2441 | s1 = htab->stub_group[input_sec->id].last_sec; | |
2442 | s = htab->stub_group[s1->id].last_stub_sec; | |
2443 | if (s != NULL && s->size > 0) | |
2444 | end = s->output_section->vma + s->output_offset + s->size - 8; | |
2445 | else | |
2446 | end = s1->output_section->vma + s1->output_offset + s1->size; | |
2447 | ||
2448 | BFD_ASSERT (start < end); | |
2449 | BFD_ASSERT (start <= location); | |
2450 | BFD_ASSERT (location < end); | |
2451 | ||
2452 | /* Put stubs at the end of the group unless that is not a valid | |
2453 | location and the beginning of the group is. It might be that | |
2454 | neither the beginning nor end works if we have an input section | |
2455 | so large that it spans multiple segment boundaries. In that | |
2456 | case, punt; the end result will be a relocation overflow error no | |
2457 | matter what we do here. | |
2458 | ||
2459 | Note that adding stubs pushes up the addresses of all subsequent | |
2460 | sections, so that stubs allocated on one pass through the | |
2461 | relaxation loop may not be valid on the next pass. (E.g., we may | |
2462 | allocate a stub at the beginning of the section on one pass and | |
2463 | find that the call site has been bumped into the next memory | |
2464 | segment on the next pass.) The important thing to note is that | |
2465 | we never try to reclaim the space allocated to such unused stubs, | |
2466 | so code size and section addresses can only increase with each | |
2467 | iteration. Accounting for the start and end addresses of the | |
2468 | already-created stub sections ensures that when the algorithm | |
2469 | converges, it converges accurately, with the entire appropriate | |
2470 | stub section accessible from the call site and not just the | |
2471 | address at the start or end of the stub group proper. */ | |
2472 | ||
2473 | if (segment == CALL26_SEGMENT (end)) | |
2474 | return nios2_stub_call26_after; | |
2475 | else if (segment == CALL26_SEGMENT (start)) | |
2476 | return nios2_stub_call26_before; | |
2477 | else | |
2478 | /* Perhaps this should be a dedicated error code. */ | |
2479 | return nios2_stub_none; | |
2480 | } | |
2481 | ||
2482 | static bfd_boolean | |
2483 | nios2_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED) | |
2484 | { | |
2485 | struct elf32_nios2_stub_hash_entry *hsh | |
2486 | = (struct elf32_nios2_stub_hash_entry *) gen_entry; | |
2487 | asection *stub_sec = hsh->stub_sec; | |
2488 | bfd_vma sym_value; | |
abf874aa | 2489 | struct bfd_link_info *info; |
78058a5e | 2490 | |
abf874aa CL |
2491 | info = (struct bfd_link_info *) in_arg; |
2492 | ||
2493 | /* Fail if the target section could not be assigned to an output | |
2494 | section. The user should fix his linker script. */ | |
2495 | if (hsh->target_section->output_section == NULL | |
2496 | && info->non_contiguous_regions) | |
53215f21 CL |
2497 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " |
2498 | "Retry without --enable-non-contiguous-regions.\n"), | |
2499 | hsh->target_section); | |
2500 | ||
78058a5e SL |
2501 | /* Make a note of the offset within the stubs for this entry. */ |
2502 | hsh->stub_offset = stub_sec->size; | |
2503 | ||
2504 | switch (hsh->stub_type) | |
2505 | { | |
2506 | case nios2_stub_call26_before: | |
2507 | case nios2_stub_call26_after: | |
2508 | /* A call26 stub looks like: | |
2509 | orhi at, %hiadj(dest) | |
2510 | addi at, at, %lo(dest) | |
2511 | jmp at | |
2512 | Note that call/jmpi instructions can't be used in PIC code | |
2513 | so there is no reason for the stub to be PIC, either. */ | |
2514 | sym_value = (hsh->target_value | |
2515 | + hsh->target_section->output_offset | |
2516 | + hsh->target_section->output_section->vma | |
2517 | + hsh->addend); | |
2518 | ||
2519 | nios2_elf32_install_data (stub_sec, nios2_call26_stub_entry, | |
2520 | hsh->stub_offset, 3); | |
2521 | nios2_elf32_install_imm16 (stub_sec, hsh->stub_offset, | |
2522 | hiadj (sym_value)); | |
2523 | nios2_elf32_install_imm16 (stub_sec, hsh->stub_offset + 4, | |
2524 | (sym_value & 0xffff)); | |
2525 | stub_sec->size += 12; | |
2526 | break; | |
2527 | default: | |
2528 | BFD_FAIL (); | |
2529 | return FALSE; | |
2530 | } | |
2531 | ||
2532 | return TRUE; | |
2533 | } | |
2534 | ||
2535 | /* As above, but don't actually build the stub. Just bump offset so | |
2536 | we know stub section sizes. */ | |
2537 | static bfd_boolean | |
2538 | nios2_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED) | |
2539 | { | |
2540 | struct elf32_nios2_stub_hash_entry *hsh | |
2541 | = (struct elf32_nios2_stub_hash_entry *) gen_entry; | |
2542 | ||
2543 | switch (hsh->stub_type) | |
2544 | { | |
2545 | case nios2_stub_call26_before: | |
2546 | case nios2_stub_call26_after: | |
2547 | hsh->stub_sec->size += 12; | |
2548 | break; | |
2549 | default: | |
2550 | BFD_FAIL (); | |
2551 | return FALSE; | |
2552 | } | |
2553 | return TRUE; | |
2554 | } | |
2555 | ||
2556 | /* Read in all local syms for all input bfds. | |
2557 | Returns -1 on error, 0 otherwise. */ | |
2558 | ||
2559 | static int | |
2560 | get_local_syms (bfd *output_bfd ATTRIBUTE_UNUSED, bfd *input_bfd, | |
2561 | struct bfd_link_info *info) | |
2562 | { | |
2563 | unsigned int bfd_indx; | |
2564 | Elf_Internal_Sym *local_syms, **all_local_syms; | |
2565 | struct elf32_nios2_link_hash_table *htab = elf32_nios2_hash_table (info); | |
2566 | ||
2567 | /* We want to read in symbol extension records only once. To do this | |
2568 | we need to read in the local symbols in parallel and save them for | |
2569 | later use; so hold pointers to the local symbols in an array. */ | |
986f0783 | 2570 | size_t amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count; |
78058a5e SL |
2571 | all_local_syms = bfd_zmalloc (amt); |
2572 | htab->all_local_syms = all_local_syms; | |
2573 | if (all_local_syms == NULL) | |
2574 | return -1; | |
2575 | ||
2576 | /* Walk over all the input BFDs, swapping in local symbols. */ | |
2577 | for (bfd_indx = 0; | |
2578 | input_bfd != NULL; | |
c72f2fb2 | 2579 | input_bfd = input_bfd->link.next, bfd_indx++) |
78058a5e SL |
2580 | { |
2581 | Elf_Internal_Shdr *symtab_hdr; | |
2582 | ||
2583 | /* We'll need the symbol table in a second. */ | |
2584 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2585 | if (symtab_hdr->sh_info == 0) | |
2586 | continue; | |
2587 | ||
2588 | /* We need an array of the local symbols attached to the input bfd. */ | |
2589 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2590 | if (local_syms == NULL) | |
2591 | { | |
2592 | local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2593 | symtab_hdr->sh_info, 0, | |
2594 | NULL, NULL, NULL); | |
2595 | /* Cache them for elf_link_input_bfd. */ | |
2596 | symtab_hdr->contents = (unsigned char *) local_syms; | |
2597 | } | |
2598 | if (local_syms == NULL) | |
2599 | return -1; | |
2600 | ||
2601 | all_local_syms[bfd_indx] = local_syms; | |
2602 | } | |
2603 | ||
2604 | return 0; | |
2605 | } | |
2606 | ||
2607 | /* Determine and set the size of the stub section for a final link. */ | |
2608 | bfd_boolean | |
2609 | nios2_elf32_size_stubs (bfd *output_bfd, bfd *stub_bfd, | |
2610 | struct bfd_link_info *info, | |
2611 | asection *(*add_stub_section) (const char *, | |
2612 | asection *, bfd_boolean), | |
2613 | void (*layout_sections_again) (void)) | |
2614 | { | |
2615 | bfd_boolean stub_changed = FALSE; | |
2616 | struct elf32_nios2_link_hash_table *htab = elf32_nios2_hash_table (info); | |
2617 | ||
2618 | /* Stash our params away. */ | |
2619 | htab->stub_bfd = stub_bfd; | |
2620 | htab->add_stub_section = add_stub_section; | |
2621 | htab->layout_sections_again = layout_sections_again; | |
2622 | ||
2623 | /* FIXME: We only compute the section groups once. This could cause | |
2624 | problems if adding a large stub section causes following sections, | |
2625 | or parts of them, to move into another segment. However, this seems | |
2626 | to be consistent with the way other back ends handle this.... */ | |
2627 | group_sections (htab); | |
2628 | ||
2629 | if (get_local_syms (output_bfd, info->input_bfds, info)) | |
2630 | { | |
2631 | if (htab->all_local_syms) | |
2632 | goto error_ret_free_local; | |
2633 | return FALSE; | |
2634 | } | |
2635 | ||
2636 | while (1) | |
2637 | { | |
2638 | bfd *input_bfd; | |
2639 | unsigned int bfd_indx; | |
2640 | asection *stub_sec; | |
2641 | ||
2642 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
2643 | input_bfd != NULL; | |
c72f2fb2 | 2644 | input_bfd = input_bfd->link.next, bfd_indx++) |
78058a5e SL |
2645 | { |
2646 | Elf_Internal_Shdr *symtab_hdr; | |
2647 | asection *section; | |
2648 | Elf_Internal_Sym *local_syms; | |
2649 | ||
2650 | /* We'll need the symbol table in a second. */ | |
2651 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
2652 | if (symtab_hdr->sh_info == 0) | |
2653 | continue; | |
2654 | ||
2655 | local_syms = htab->all_local_syms[bfd_indx]; | |
2656 | ||
2657 | /* Walk over each section attached to the input bfd. */ | |
2658 | for (section = input_bfd->sections; | |
2659 | section != NULL; | |
2660 | section = section->next) | |
2661 | { | |
2662 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2663 | ||
2664 | /* If there aren't any relocs, then there's nothing more | |
2665 | to do. */ | |
2666 | if ((section->flags & SEC_RELOC) == 0 | |
2667 | || section->reloc_count == 0) | |
2668 | continue; | |
2669 | ||
2670 | /* If this section is a link-once section that will be | |
2671 | discarded, then don't create any stubs. */ | |
2672 | if (section->output_section == NULL | |
2673 | || section->output_section->owner != output_bfd) | |
2674 | continue; | |
2675 | ||
2676 | /* Get the relocs. */ | |
2677 | internal_relocs | |
2678 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, | |
2679 | info->keep_memory); | |
2680 | if (internal_relocs == NULL) | |
2681 | goto error_ret_free_local; | |
2682 | ||
2683 | /* Now examine each relocation. */ | |
2684 | irela = internal_relocs; | |
2685 | irelaend = irela + section->reloc_count; | |
2686 | for (; irela < irelaend; irela++) | |
2687 | { | |
2688 | unsigned int r_type, r_indx; | |
2689 | enum elf32_nios2_stub_type stub_type; | |
2690 | struct elf32_nios2_stub_hash_entry *hsh; | |
2691 | asection *sym_sec; | |
2692 | bfd_vma sym_value; | |
2693 | bfd_vma destination; | |
2694 | struct elf32_nios2_link_hash_entry *hh; | |
2695 | char *stub_name; | |
2696 | const asection *id_sec; | |
2697 | ||
2698 | r_type = ELF32_R_TYPE (irela->r_info); | |
2699 | r_indx = ELF32_R_SYM (irela->r_info); | |
2700 | ||
2701 | if (r_type >= (unsigned int) R_NIOS2_ILLEGAL) | |
2702 | { | |
2703 | bfd_set_error (bfd_error_bad_value); | |
2704 | error_ret_free_internal: | |
2705 | if (elf_section_data (section)->relocs == NULL) | |
2706 | free (internal_relocs); | |
2707 | goto error_ret_free_local; | |
2708 | } | |
2709 | ||
2710 | /* Only look for stubs on CALL and JMPI instructions. */ | |
2711 | if (r_type != (unsigned int) R_NIOS2_CALL26) | |
2712 | continue; | |
2713 | ||
2714 | /* Now determine the call target, its name, value, | |
2715 | section. */ | |
2716 | sym_sec = NULL; | |
2717 | sym_value = 0; | |
2718 | destination = 0; | |
2719 | hh = NULL; | |
2720 | if (r_indx < symtab_hdr->sh_info) | |
2721 | { | |
2722 | /* It's a local symbol. */ | |
2723 | Elf_Internal_Sym *sym; | |
2724 | Elf_Internal_Shdr *hdr; | |
2725 | unsigned int shndx; | |
2726 | ||
2727 | sym = local_syms + r_indx; | |
2728 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2729 | sym_value = sym->st_value; | |
2730 | shndx = sym->st_shndx; | |
2731 | if (shndx < elf_numsections (input_bfd)) | |
2732 | { | |
2733 | hdr = elf_elfsections (input_bfd)[shndx]; | |
2734 | sym_sec = hdr->bfd_section; | |
2735 | destination = (sym_value + irela->r_addend | |
2736 | + sym_sec->output_offset | |
2737 | + sym_sec->output_section->vma); | |
2738 | } | |
2739 | } | |
2740 | else | |
2741 | { | |
2742 | /* It's an external symbol. */ | |
2743 | int e_indx; | |
2744 | ||
2745 | e_indx = r_indx - symtab_hdr->sh_info; | |
2746 | hh = ((struct elf32_nios2_link_hash_entry *) | |
2747 | elf_sym_hashes (input_bfd)[e_indx]); | |
2748 | ||
2749 | while (hh->root.root.type == bfd_link_hash_indirect | |
2750 | || hh->root.root.type == bfd_link_hash_warning) | |
2751 | hh = ((struct elf32_nios2_link_hash_entry *) | |
2752 | hh->root.root.u.i.link); | |
2753 | ||
2754 | if (hh->root.root.type == bfd_link_hash_defined | |
2755 | || hh->root.root.type == bfd_link_hash_defweak) | |
2756 | { | |
2757 | sym_sec = hh->root.root.u.def.section; | |
2758 | sym_value = hh->root.root.u.def.value; | |
2759 | ||
2760 | if (sym_sec->output_section != NULL) | |
2761 | destination = (sym_value + irela->r_addend | |
2762 | + sym_sec->output_offset | |
2763 | + sym_sec->output_section->vma); | |
2764 | else | |
2765 | continue; | |
2766 | } | |
2767 | else if (hh->root.root.type == bfd_link_hash_undefweak) | |
2768 | { | |
0e1862bb | 2769 | if (! bfd_link_pic (info)) |
78058a5e SL |
2770 | continue; |
2771 | } | |
2772 | else if (hh->root.root.type == bfd_link_hash_undefined) | |
2773 | { | |
2774 | if (! (info->unresolved_syms_in_objects == RM_IGNORE | |
2775 | && (ELF_ST_VISIBILITY (hh->root.other) | |
2776 | == STV_DEFAULT))) | |
2777 | continue; | |
2778 | } | |
2779 | else | |
2780 | { | |
2781 | bfd_set_error (bfd_error_bad_value); | |
2782 | goto error_ret_free_internal; | |
2783 | } | |
2784 | } | |
2785 | ||
2786 | /* Determine what (if any) linker stub is needed. */ | |
2787 | stub_type = nios2_type_of_stub (section, irela, hh, htab, | |
2788 | destination, info); | |
2789 | if (stub_type == nios2_stub_none) | |
2790 | continue; | |
2791 | ||
2792 | /* Support for grouping stub sections. */ | |
2793 | if (stub_type == nios2_stub_call26_before) | |
2794 | id_sec = htab->stub_group[section->id].first_sec; | |
2795 | else | |
2796 | id_sec = htab->stub_group[section->id].last_sec; | |
2797 | ||
2798 | /* Get the name of this stub. */ | |
2799 | stub_name = nios2_stub_name (id_sec, sym_sec, hh, irela, | |
2800 | stub_type); | |
2801 | if (!stub_name) | |
2802 | goto error_ret_free_internal; | |
2803 | ||
2804 | hsh = nios2_stub_hash_lookup (&htab->bstab, | |
2805 | stub_name, | |
2806 | FALSE, FALSE); | |
2807 | if (hsh != NULL) | |
2808 | { | |
2809 | /* The proper stub has already been created. */ | |
2810 | free (stub_name); | |
2811 | continue; | |
2812 | } | |
2813 | ||
2814 | hsh = nios2_add_stub (stub_name, section, htab, stub_type); | |
2815 | if (hsh == NULL) | |
2816 | { | |
2817 | free (stub_name); | |
2818 | goto error_ret_free_internal; | |
2819 | } | |
2820 | hsh->target_value = sym_value; | |
2821 | hsh->target_section = sym_sec; | |
2822 | hsh->stub_type = stub_type; | |
2823 | hsh->hh = hh; | |
2824 | hsh->addend = irela->r_addend; | |
2825 | stub_changed = TRUE; | |
2826 | } | |
2827 | ||
2828 | /* We're done with the internal relocs, free them. */ | |
2829 | if (elf_section_data (section)->relocs == NULL) | |
2830 | free (internal_relocs); | |
2831 | } | |
2832 | } | |
2833 | ||
2834 | if (!stub_changed) | |
2835 | break; | |
2836 | ||
2837 | /* OK, we've added some stubs. Find out the new size of the | |
2838 | stub sections. */ | |
2839 | for (stub_sec = htab->stub_bfd->sections; | |
2840 | stub_sec != NULL; | |
2841 | stub_sec = stub_sec->next) | |
2842 | stub_sec->size = 0; | |
2843 | ||
2844 | bfd_hash_traverse (&htab->bstab, nios2_size_one_stub, htab); | |
2845 | ||
2846 | /* Ask the linker to do its stuff. */ | |
2847 | (*htab->layout_sections_again) (); | |
2848 | stub_changed = FALSE; | |
2849 | } | |
2850 | ||
2851 | free (htab->all_local_syms); | |
2852 | return TRUE; | |
2853 | ||
2854 | error_ret_free_local: | |
2855 | free (htab->all_local_syms); | |
2856 | return FALSE; | |
2857 | } | |
2858 | ||
2859 | /* Build all the stubs associated with the current output file. The | |
2860 | stubs are kept in a hash table attached to the main linker hash | |
2861 | table. This function is called via nios2elf_finish in the linker. */ | |
2862 | bfd_boolean | |
2863 | nios2_elf32_build_stubs (struct bfd_link_info *info) | |
2864 | { | |
2865 | asection *stub_sec; | |
2866 | struct bfd_hash_table *table; | |
2867 | struct elf32_nios2_link_hash_table *htab; | |
2868 | ||
2869 | htab = elf32_nios2_hash_table (info); | |
2870 | ||
2871 | for (stub_sec = htab->stub_bfd->sections; | |
2872 | stub_sec != NULL; | |
2873 | stub_sec = stub_sec->next) | |
1511baec SL |
2874 | /* The stub_bfd may contain non-stub sections if it is also the |
2875 | dynobj. Any such non-stub sections are created with the | |
2876 | SEC_LINKER_CREATED flag set, while stub sections do not | |
2877 | have that flag. Ignore any non-stub sections here. */ | |
2878 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
1b786873 | 2879 | { |
1511baec SL |
2880 | bfd_size_type size; |
2881 | ||
2882 | /* Allocate memory to hold the linker stubs. */ | |
2883 | size = stub_sec->size; | |
2884 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
2885 | if (stub_sec->contents == NULL && size != 0) | |
2886 | return FALSE; | |
2887 | stub_sec->size = 0; | |
2888 | } | |
78058a5e SL |
2889 | |
2890 | /* Build the stubs as directed by the stub hash table. */ | |
2891 | table = &htab->bstab; | |
2892 | bfd_hash_traverse (table, nios2_build_one_stub, info); | |
2893 | ||
2894 | return TRUE; | |
2895 | } | |
2896 | ||
2897 | ||
965b1d80 SL |
2898 | #define is_nios2_elf(bfd) \ |
2899 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2900 | && elf_object_id (bfd) == NIOS2_ELF_DATA) | |
2901 | ||
2902 | /* Merge backend specific data from an object file to the output | |
2903 | object file when linking. */ | |
2904 | ||
2905 | static bfd_boolean | |
50e03d47 | 2906 | nios2_elf32_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
965b1d80 | 2907 | { |
50e03d47 | 2908 | bfd *obfd = info->output_bfd; |
965b1d80 SL |
2909 | flagword old_flags; |
2910 | flagword new_flags; | |
2911 | ||
2912 | if (!is_nios2_elf (ibfd) || !is_nios2_elf (obfd)) | |
2913 | return TRUE; | |
2914 | ||
2915 | /* Check if we have the same endianness. */ | |
50e03d47 | 2916 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
965b1d80 SL |
2917 | return FALSE; |
2918 | ||
2919 | new_flags = elf_elfheader (ibfd)->e_flags; | |
2920 | old_flags = elf_elfheader (obfd)->e_flags; | |
2921 | if (!elf_flags_init (obfd)) | |
2922 | { | |
2923 | /* First call, no flags set. */ | |
2924 | elf_flags_init (obfd) = TRUE; | |
2925 | elf_elfheader (obfd)->e_flags = new_flags; | |
2926 | ||
2927 | switch (new_flags) | |
2928 | { | |
2929 | default: | |
2930 | case EF_NIOS2_ARCH_R1: | |
2931 | bfd_default_set_arch_mach (obfd, bfd_arch_nios2, bfd_mach_nios2r1); | |
2932 | break; | |
2933 | case EF_NIOS2_ARCH_R2: | |
2934 | if (bfd_big_endian (ibfd)) | |
2935 | { | |
4eca0228 | 2936 | _bfd_error_handler |
38f14ab8 | 2937 | (_("error: %pB: big-endian R2 is not supported"), ibfd); |
965b1d80 SL |
2938 | bfd_set_error (bfd_error_bad_value); |
2939 | return FALSE; | |
2940 | } | |
2941 | bfd_default_set_arch_mach (obfd, bfd_arch_nios2, bfd_mach_nios2r2); | |
2942 | break; | |
2943 | } | |
2944 | } | |
2945 | ||
2946 | /* Incompatible flags. */ | |
2947 | else if (new_flags != old_flags) | |
2948 | { | |
2949 | /* So far, the only incompatible flags denote incompatible | |
2950 | architectures. */ | |
4eca0228 | 2951 | _bfd_error_handler |
695344c0 | 2952 | /* xgettext:c-format */ |
38f14ab8 | 2953 | (_("error: %pB: conflicting CPU architectures %d/%d"), |
965b1d80 SL |
2954 | ibfd, new_flags, old_flags); |
2955 | bfd_set_error (bfd_error_bad_value); | |
2956 | return FALSE; | |
2957 | } | |
2958 | ||
2959 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
50e03d47 | 2960 | _bfd_elf_merge_object_attributes (ibfd, info); |
965b1d80 SL |
2961 | |
2962 | return TRUE; | |
2963 | } | |
2964 | ||
36591ba1 SL |
2965 | /* Implement bfd_elf32_bfd_reloc_type_lookup: |
2966 | Given a BFD reloc type, return a howto structure. */ | |
f3185997 | 2967 | |
36591ba1 | 2968 | static reloc_howto_type * |
8c163c5a | 2969 | nios2_elf32_bfd_reloc_type_lookup (bfd *abfd, |
36591ba1 SL |
2970 | bfd_reloc_code_real_type code) |
2971 | { | |
2972 | int i; | |
1b786873 | 2973 | |
f3185997 | 2974 | for (i = 0; i < (int) ARRAY_SIZE (nios2_reloc_map); ++i) |
36591ba1 | 2975 | if (nios2_reloc_map[i].bfd_val == code) |
8c163c5a | 2976 | return lookup_howto (nios2_reloc_map[i].elf_val, abfd); |
36591ba1 SL |
2977 | return NULL; |
2978 | } | |
2979 | ||
2980 | /* Implement bfd_elf32_bfd_reloc_name_lookup: | |
2981 | Given a reloc name, return a howto structure. */ | |
f3185997 | 2982 | |
36591ba1 | 2983 | static reloc_howto_type * |
8c163c5a | 2984 | nios2_elf32_bfd_reloc_name_lookup (bfd *abfd, |
36591ba1 SL |
2985 | const char *r_name) |
2986 | { | |
8c163c5a SL |
2987 | int i; |
2988 | reloc_howto_type *howto_tbl; | |
2989 | int howto_tbl_size; | |
36591ba1 | 2990 | |
8c163c5a SL |
2991 | if (BFD_IS_R2 (abfd)) |
2992 | { | |
2993 | howto_tbl = elf_nios2_r2_howto_table_rel; | |
f3185997 | 2994 | howto_tbl_size = (int) ARRAY_SIZE (elf_nios2_r2_howto_table_rel); |
8c163c5a SL |
2995 | } |
2996 | else | |
2997 | { | |
2998 | howto_tbl = elf_nios2_r1_howto_table_rel; | |
f3185997 | 2999 | howto_tbl_size = (int) ARRAY_SIZE (elf_nios2_r1_howto_table_rel); |
8c163c5a | 3000 | } |
1b786873 | 3001 | |
8c163c5a SL |
3002 | for (i = 0; i < howto_tbl_size; i++) |
3003 | if (howto_tbl[i].name && strcasecmp (howto_tbl[i].name, r_name) == 0) | |
3004 | return howto_tbl + i; | |
f3185997 | 3005 | |
1b786873 | 3006 | return NULL; |
36591ba1 SL |
3007 | } |
3008 | ||
3009 | /* Implement elf_info_to_howto: | |
3010 | Given a ELF32 relocation, fill in a arelent structure. */ | |
f3185997 NC |
3011 | |
3012 | static bfd_boolean | |
8c163c5a | 3013 | nios2_elf32_info_to_howto (bfd *abfd, arelent *cache_ptr, |
36591ba1 SL |
3014 | Elf_Internal_Rela *dst) |
3015 | { | |
3016 | unsigned int r_type; | |
3017 | ||
3018 | r_type = ELF32_R_TYPE (dst->r_info); | |
f3185997 NC |
3019 | if ((cache_ptr->howto = lookup_howto (r_type, abfd)) == NULL) |
3020 | { | |
3021 | /* xgettext:c-format */ | |
3022 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
3023 | abfd, r_type); | |
3024 | bfd_set_error (bfd_error_bad_value); | |
3025 | return FALSE; | |
3026 | } | |
3027 | return TRUE; | |
36591ba1 SL |
3028 | } |
3029 | ||
3030 | /* Return the base VMA address which should be subtracted from real addresses | |
3031 | when resolving @dtpoff relocation. | |
3032 | This is PT_TLS segment p_vaddr. */ | |
3033 | static bfd_vma | |
3034 | dtpoff_base (struct bfd_link_info *info) | |
3035 | { | |
3036 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
3037 | if (elf_hash_table (info)->tls_sec == NULL) | |
3038 | return 0; | |
3039 | return elf_hash_table (info)->tls_sec->vma; | |
3040 | } | |
3041 | ||
3042 | /* Return the relocation value for @tpoff relocation | |
3043 | if STT_TLS virtual address is ADDRESS. */ | |
3044 | static bfd_vma | |
3045 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
3046 | { | |
3047 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
3048 | ||
3049 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
3050 | if (htab->tls_sec == NULL) | |
3051 | return 0; | |
3052 | return address - htab->tls_sec->vma; | |
3053 | } | |
3054 | ||
3055 | /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a | |
3056 | dangerous relocation. */ | |
3057 | static bfd_boolean | |
3058 | nios2_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp, struct bfd_link_info *info) | |
3059 | { | |
3060 | ||
3061 | bfd_boolean gp_found; | |
3062 | struct bfd_hash_entry *h; | |
3063 | struct bfd_link_hash_entry *lh; | |
3064 | ||
3065 | /* If we've already figured out what GP will be, just return it. */ | |
3066 | *pgp = _bfd_get_gp_value (output_bfd); | |
3067 | if (*pgp) | |
3068 | return TRUE; | |
3069 | ||
3070 | h = bfd_hash_lookup (&info->hash->table, "_gp", FALSE, FALSE); | |
3071 | lh = (struct bfd_link_hash_entry *) h; | |
dc1e8a47 | 3072 | lookup: |
36591ba1 SL |
3073 | if (lh) |
3074 | { | |
3075 | switch (lh->type) | |
3076 | { | |
3077 | case bfd_link_hash_undefined: | |
3078 | case bfd_link_hash_undefweak: | |
3079 | case bfd_link_hash_common: | |
3080 | gp_found = FALSE; | |
3081 | break; | |
3082 | case bfd_link_hash_defined: | |
3083 | case bfd_link_hash_defweak: | |
3084 | gp_found = TRUE; | |
a7be2893 SL |
3085 | { |
3086 | asection *sym_sec = lh->u.def.section; | |
3087 | bfd_vma sym_value = lh->u.def.value; | |
3088 | ||
3089 | if (sym_sec->output_section) | |
3090 | sym_value = (sym_value + sym_sec->output_offset | |
3091 | + sym_sec->output_section->vma); | |
3092 | *pgp = sym_value; | |
3093 | } | |
36591ba1 SL |
3094 | break; |
3095 | case bfd_link_hash_indirect: | |
3096 | case bfd_link_hash_warning: | |
3097 | lh = lh->u.i.link; | |
3098 | /* @@FIXME ignoring warning for now */ | |
3099 | goto lookup; | |
3100 | case bfd_link_hash_new: | |
3101 | default: | |
3102 | abort (); | |
3103 | } | |
3104 | } | |
3105 | else | |
3106 | gp_found = FALSE; | |
3107 | ||
3108 | if (!gp_found) | |
3109 | { | |
3110 | /* Only get the error once. */ | |
3111 | *pgp = 4; | |
3112 | _bfd_set_gp_value (output_bfd, *pgp); | |
3113 | return FALSE; | |
3114 | } | |
3115 | ||
3116 | _bfd_set_gp_value (output_bfd, *pgp); | |
3117 | ||
3118 | return TRUE; | |
3119 | } | |
3120 | ||
3121 | /* Retrieve the previously cached _gp pointer, returning bfd_reloc_dangerous | |
3122 | if it's not available as we don't have a link_info pointer available here | |
3123 | to look it up in the output symbol table. We don't need to adjust the | |
3124 | symbol value for an external symbol if we are producing relocatable | |
3125 | output. */ | |
3126 | static bfd_reloc_status_type | |
1b786873 | 3127 | nios2_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, |
36591ba1 SL |
3128 | char **error_message, bfd_vma *pgp) |
3129 | { | |
3130 | if (bfd_is_und_section (symbol->section) && !relocatable) | |
3131 | { | |
3132 | *pgp = 0; | |
3133 | return bfd_reloc_undefined; | |
3134 | } | |
3135 | ||
3136 | *pgp = _bfd_get_gp_value (output_bfd); | |
3137 | if (*pgp == 0 && (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
3138 | { | |
3139 | if (relocatable) | |
3140 | { | |
3141 | /* Make up a value. */ | |
3142 | *pgp = symbol->section->output_section->vma + 0x4000; | |
3143 | _bfd_set_gp_value (output_bfd, *pgp); | |
3144 | } | |
3145 | else | |
3146 | { | |
3147 | *error_message | |
3148 | = (char *) _("global pointer relative relocation when _gp not defined"); | |
3149 | return bfd_reloc_dangerous; | |
3150 | } | |
3151 | } | |
3152 | ||
3153 | return bfd_reloc_ok; | |
3154 | } | |
3155 | ||
36591ba1 SL |
3156 | /* Do the relocations that require special handling. */ |
3157 | static bfd_reloc_status_type | |
1b786873 | 3158 | nios2_elf32_do_hi16_relocate (bfd *abfd, reloc_howto_type *howto, |
25153ba0 | 3159 | asection *input_section, |
1b786873 | 3160 | bfd_byte *data, bfd_vma offset, |
36591ba1 SL |
3161 | bfd_vma symbol_value, bfd_vma addend) |
3162 | { | |
3163 | symbol_value = symbol_value + addend; | |
3164 | addend = 0; | |
3165 | symbol_value = (symbol_value >> 16) & 0xffff; | |
3166 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
3167 | data, offset, symbol_value, addend); | |
3168 | } | |
3169 | ||
3170 | static bfd_reloc_status_type | |
3171 | nios2_elf32_do_lo16_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3172 | asection *input_section, |
1b786873 | 3173 | bfd_byte *data, bfd_vma offset, |
36591ba1 SL |
3174 | bfd_vma symbol_value, bfd_vma addend) |
3175 | { | |
3176 | symbol_value = symbol_value + addend; | |
3177 | addend = 0; | |
3178 | symbol_value = symbol_value & 0xffff; | |
3179 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
3180 | data, offset, symbol_value, addend); | |
3181 | } | |
3182 | ||
3183 | static bfd_reloc_status_type | |
3184 | nios2_elf32_do_hiadj16_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3185 | asection *input_section, |
36591ba1 SL |
3186 | bfd_byte *data, bfd_vma offset, |
3187 | bfd_vma symbol_value, bfd_vma addend) | |
3188 | { | |
3189 | symbol_value = symbol_value + addend; | |
3190 | addend = 0; | |
3191 | symbol_value = hiadj(symbol_value); | |
3192 | return _bfd_final_link_relocate (howto, abfd, input_section, data, offset, | |
3193 | symbol_value, addend); | |
3194 | } | |
3195 | ||
3196 | static bfd_reloc_status_type | |
3197 | nios2_elf32_do_pcrel_lo16_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3198 | asection *input_section, |
36591ba1 SL |
3199 | bfd_byte *data, bfd_vma offset, |
3200 | bfd_vma symbol_value, bfd_vma addend) | |
3201 | { | |
3202 | symbol_value = symbol_value + addend; | |
3203 | addend = 0; | |
3204 | symbol_value = symbol_value & 0xffff; | |
3205 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
3206 | data, offset, symbol_value, addend); | |
3207 | } | |
3208 | ||
3209 | static bfd_reloc_status_type | |
3210 | nios2_elf32_do_pcrel_hiadj16_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3211 | asection *input_section, |
36591ba1 SL |
3212 | bfd_byte *data, bfd_vma offset, |
3213 | bfd_vma symbol_value, bfd_vma addend) | |
3214 | { | |
3215 | symbol_value = symbol_value + addend; | |
3216 | symbol_value -= (input_section->output_section->vma | |
3217 | + input_section->output_offset); | |
3218 | symbol_value -= offset; | |
3219 | addend = 0; | |
3220 | symbol_value = hiadj(symbol_value); | |
3221 | return _bfd_final_link_relocate (howto, abfd, input_section, data, offset, | |
3222 | symbol_value, addend); | |
3223 | } | |
3224 | ||
3225 | static bfd_reloc_status_type | |
3226 | nios2_elf32_do_pcrel16_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3227 | asection *input_section, |
1b786873 | 3228 | bfd_byte *data, bfd_vma offset, |
36591ba1 SL |
3229 | bfd_vma symbol_value, bfd_vma addend) |
3230 | { | |
1b786873 | 3231 | /* NIOS2 pc relative relocations are relative to the next 32-bit instruction |
36591ba1 SL |
3232 | so we need to subtract 4 before doing a final_link_relocate. */ |
3233 | symbol_value = symbol_value + addend - 4; | |
3234 | addend = 0; | |
3235 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
3236 | data, offset, symbol_value, addend); | |
3237 | } | |
3238 | ||
3239 | static bfd_reloc_status_type | |
3240 | nios2_elf32_do_call26_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3241 | asection *input_section, |
1b786873 | 3242 | bfd_byte *data, bfd_vma offset, |
36591ba1 SL |
3243 | bfd_vma symbol_value, bfd_vma addend) |
3244 | { | |
3245 | /* Check that the relocation is in the same page as the current address. */ | |
1b786873 | 3246 | if (CALL26_SEGMENT (symbol_value + addend) |
78058a5e SL |
3247 | != CALL26_SEGMENT (input_section->output_section->vma |
3248 | + input_section->output_offset | |
3249 | + offset)) | |
36591ba1 SL |
3250 | return bfd_reloc_overflow; |
3251 | ||
8c163c5a SL |
3252 | /* Check that the target address is correctly aligned on a 4-byte |
3253 | boundary. */ | |
3254 | if ((symbol_value + addend) & 0x3) | |
3255 | return bfd_reloc_overflow; | |
3256 | ||
36591ba1 SL |
3257 | return _bfd_final_link_relocate (howto, abfd, input_section, |
3258 | data, offset, symbol_value, addend); | |
3259 | } | |
3260 | ||
3261 | static bfd_reloc_status_type | |
3262 | nios2_elf32_do_gprel_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3263 | asection *input_section, |
1b786873 | 3264 | bfd_byte *data, bfd_vma offset, |
36591ba1 SL |
3265 | bfd_vma symbol_value, bfd_vma addend) |
3266 | { | |
3267 | /* Because we need the output_bfd, the special handling is done | |
3268 | in nios2_elf32_relocate_section or in nios2_elf32_gprel_relocate. */ | |
3269 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
3270 | data, offset, symbol_value, addend); | |
3271 | } | |
3272 | ||
3273 | static bfd_reloc_status_type | |
3274 | nios2_elf32_do_ujmp_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3275 | asection *input_section, |
1b786873 | 3276 | bfd_byte *data, bfd_vma offset, |
36591ba1 SL |
3277 | bfd_vma symbol_value, bfd_vma addend) |
3278 | { | |
3279 | bfd_vma symbol_lo16, symbol_hi16; | |
3280 | bfd_reloc_status_type r; | |
3281 | symbol_value = symbol_value + addend; | |
3282 | addend = 0; | |
3283 | symbol_hi16 = (symbol_value >> 16) & 0xffff; | |
3284 | symbol_lo16 = symbol_value & 0xffff; | |
3285 | ||
3286 | r = _bfd_final_link_relocate (howto, abfd, input_section, | |
3287 | data, offset, symbol_hi16, addend); | |
3288 | ||
3289 | if (r == bfd_reloc_ok) | |
3290 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
3291 | data, offset + 4, symbol_lo16, addend); | |
3292 | ||
3293 | return r; | |
3294 | } | |
3295 | ||
3296 | static bfd_reloc_status_type | |
3297 | nios2_elf32_do_cjmp_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3298 | asection *input_section, |
1b786873 | 3299 | bfd_byte *data, bfd_vma offset, |
36591ba1 SL |
3300 | bfd_vma symbol_value, bfd_vma addend) |
3301 | { | |
3302 | bfd_vma symbol_lo16, symbol_hi16; | |
3303 | bfd_reloc_status_type r; | |
3304 | symbol_value = symbol_value + addend; | |
3305 | addend = 0; | |
3306 | symbol_hi16 = (symbol_value >> 16) & 0xffff; | |
3307 | symbol_lo16 = symbol_value & 0xffff; | |
3308 | ||
3309 | r = _bfd_final_link_relocate (howto, abfd, input_section, | |
3310 | data, offset, symbol_hi16, addend); | |
3311 | ||
3312 | if (r == bfd_reloc_ok) | |
3313 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
3314 | data, offset + 4, symbol_lo16, addend); | |
3315 | ||
3316 | return r; | |
3317 | } | |
3318 | ||
3319 | static bfd_reloc_status_type | |
3320 | nios2_elf32_do_callr_relocate (bfd *abfd, reloc_howto_type *howto, | |
25153ba0 | 3321 | asection *input_section, |
1b786873 | 3322 | bfd_byte *data, bfd_vma offset, |
36591ba1 SL |
3323 | bfd_vma symbol_value, bfd_vma addend) |
3324 | { | |
3325 | bfd_vma symbol_lo16, symbol_hi16; | |
3326 | bfd_reloc_status_type r; | |
3327 | symbol_value = symbol_value + addend; | |
3328 | addend = 0; | |
3329 | symbol_hi16 = (symbol_value >> 16) & 0xffff; | |
3330 | symbol_lo16 = symbol_value & 0xffff; | |
3331 | ||
3332 | r = _bfd_final_link_relocate (howto, abfd, input_section, | |
3333 | data, offset, symbol_hi16, addend); | |
3334 | ||
3335 | if (r == bfd_reloc_ok) | |
3336 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
3337 | data, offset + 4, symbol_lo16, addend); | |
3338 | ||
3339 | return r; | |
3340 | } | |
3341 | ||
3342 | /* HOWTO handlers for relocations that require special handling. */ | |
3343 | ||
3344 | /* This is for relocations used only when relaxing to ensure | |
3345 | changes in size of section don't screw up .align. */ | |
3346 | static bfd_reloc_status_type | |
3347 | nios2_elf32_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
1b786873 L |
3348 | asymbol *symbol ATTRIBUTE_UNUSED, |
3349 | void *data ATTRIBUTE_UNUSED, asection *input_section, | |
3350 | bfd *output_bfd, | |
36591ba1 SL |
3351 | char **error_message ATTRIBUTE_UNUSED) |
3352 | { | |
3353 | if (output_bfd != NULL) | |
3354 | reloc_entry->address += input_section->output_offset; | |
3355 | return bfd_reloc_ok; | |
3356 | } | |
3357 | ||
3358 | static bfd_reloc_status_type | |
1b786873 L |
3359 | nios2_elf32_hi16_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
3360 | void *data, asection *input_section, | |
3361 | bfd *output_bfd, | |
36591ba1 SL |
3362 | char **error_message ATTRIBUTE_UNUSED) |
3363 | { | |
3364 | /* This part is from bfd_elf_generic_reloc. */ | |
3365 | if (output_bfd != NULL | |
3366 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3367 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3368 | { | |
3369 | reloc_entry->address += input_section->output_offset; | |
3370 | return bfd_reloc_ok; | |
3371 | } | |
3372 | ||
3373 | if (output_bfd != NULL) | |
3374 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3375 | return bfd_reloc_continue; | |
3376 | ||
3377 | return nios2_elf32_do_hi16_relocate (abfd, reloc_entry->howto, | |
3378 | input_section, | |
3379 | data, reloc_entry->address, | |
3380 | (symbol->value | |
3381 | + symbol->section->output_section->vma | |
3382 | + symbol->section->output_offset), | |
3383 | reloc_entry->addend); | |
3384 | } | |
3385 | ||
3386 | static bfd_reloc_status_type | |
3387 | nios2_elf32_lo16_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1b786873 L |
3388 | void *data, asection *input_section, |
3389 | bfd *output_bfd, | |
36591ba1 SL |
3390 | char **error_message ATTRIBUTE_UNUSED) |
3391 | { | |
3392 | /* This part is from bfd_elf_generic_reloc. */ | |
3393 | if (output_bfd != NULL | |
3394 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3395 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3396 | { | |
3397 | reloc_entry->address += input_section->output_offset; | |
3398 | return bfd_reloc_ok; | |
3399 | } | |
3400 | ||
3401 | if (output_bfd != NULL) | |
3402 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3403 | return bfd_reloc_continue; | |
3404 | ||
3405 | return nios2_elf32_do_lo16_relocate (abfd, reloc_entry->howto, | |
3406 | input_section, | |
3407 | data, reloc_entry->address, | |
3408 | (symbol->value | |
3409 | + symbol->section->output_section->vma | |
3410 | + symbol->section->output_offset), | |
3411 | reloc_entry->addend); | |
3412 | } | |
3413 | ||
3414 | static bfd_reloc_status_type | |
3415 | nios2_elf32_hiadj16_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1b786873 L |
3416 | void *data, asection *input_section, |
3417 | bfd *output_bfd, | |
36591ba1 SL |
3418 | char **error_message ATTRIBUTE_UNUSED) |
3419 | { | |
3420 | /* This part is from bfd_elf_generic_reloc. */ | |
3421 | if (output_bfd != NULL | |
3422 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3423 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3424 | { | |
3425 | reloc_entry->address += input_section->output_offset; | |
3426 | return bfd_reloc_ok; | |
3427 | } | |
3428 | ||
3429 | if (output_bfd != NULL) | |
3430 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3431 | return bfd_reloc_continue; | |
3432 | ||
3433 | return nios2_elf32_do_hiadj16_relocate (abfd, reloc_entry->howto, | |
3434 | input_section, | |
3435 | data, reloc_entry->address, | |
3436 | (symbol->value | |
3437 | + symbol->section->output_section->vma | |
3438 | + symbol->section->output_offset), | |
3439 | reloc_entry->addend); | |
3440 | } | |
3441 | ||
3442 | static bfd_reloc_status_type | |
3443 | nios2_elf32_pcrel_lo16_relocate (bfd *abfd, arelent *reloc_entry, | |
3444 | asymbol *symbol, void *data, | |
3445 | asection *input_section, bfd *output_bfd, | |
3446 | char **error_message ATTRIBUTE_UNUSED) | |
3447 | { | |
3448 | /* This part is from bfd_elf_generic_reloc. */ | |
3449 | if (output_bfd != NULL | |
3450 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3451 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3452 | { | |
3453 | reloc_entry->address += input_section->output_offset; | |
3454 | return bfd_reloc_ok; | |
3455 | } | |
3456 | ||
3457 | if (output_bfd != NULL) | |
3458 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3459 | return bfd_reloc_continue; | |
3460 | ||
3461 | return nios2_elf32_do_pcrel_lo16_relocate ( | |
3462 | abfd, reloc_entry->howto, input_section, data, reloc_entry->address, | |
3463 | (symbol->value + symbol->section->output_section->vma | |
3464 | + symbol->section->output_offset), | |
3465 | reloc_entry->addend); | |
3466 | } | |
3467 | ||
3468 | static bfd_reloc_status_type | |
3469 | nios2_elf32_pcrel_hiadj16_relocate (bfd *abfd, arelent *reloc_entry, | |
3470 | asymbol *symbol, void *data, | |
3471 | asection *input_section, bfd *output_bfd, | |
3472 | char **error_message ATTRIBUTE_UNUSED) | |
3473 | { | |
3474 | /* This part is from bfd_elf_generic_reloc. */ | |
3475 | if (output_bfd != NULL | |
3476 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3477 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3478 | { | |
3479 | reloc_entry->address += input_section->output_offset; | |
3480 | return bfd_reloc_ok; | |
3481 | } | |
3482 | ||
3483 | if (output_bfd != NULL) | |
3484 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3485 | return bfd_reloc_continue; | |
3486 | ||
3487 | return nios2_elf32_do_pcrel_hiadj16_relocate ( | |
3488 | abfd, reloc_entry->howto, input_section, data, reloc_entry->address, | |
3489 | (symbol->value + symbol->section->output_section->vma | |
3490 | + symbol->section->output_offset), | |
3491 | reloc_entry->addend); | |
3492 | } | |
3493 | ||
3494 | static bfd_reloc_status_type | |
3495 | nios2_elf32_pcrel16_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1b786873 L |
3496 | void *data, asection *input_section, |
3497 | bfd *output_bfd, | |
36591ba1 SL |
3498 | char **error_message ATTRIBUTE_UNUSED) |
3499 | { | |
3500 | /* This part is from bfd_elf_generic_reloc. */ | |
3501 | if (output_bfd != NULL | |
3502 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3503 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3504 | { | |
3505 | reloc_entry->address += input_section->output_offset; | |
3506 | return bfd_reloc_ok; | |
3507 | } | |
3508 | ||
3509 | if (output_bfd != NULL) | |
3510 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3511 | return bfd_reloc_continue; | |
3512 | ||
3513 | return nios2_elf32_do_pcrel16_relocate (abfd, reloc_entry->howto, | |
3514 | input_section, | |
3515 | data, reloc_entry->address, | |
3516 | (symbol->value | |
3517 | + symbol->section->output_section->vma | |
3518 | + symbol->section->output_offset), | |
3519 | reloc_entry->addend); | |
3520 | } | |
3521 | ||
3522 | static bfd_reloc_status_type | |
3523 | nios2_elf32_call26_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1b786873 L |
3524 | void *data, asection *input_section, |
3525 | bfd *output_bfd, | |
36591ba1 SL |
3526 | char **error_message ATTRIBUTE_UNUSED) |
3527 | { | |
3528 | /* This part is from bfd_elf_generic_reloc. */ | |
3529 | if (output_bfd != NULL | |
3530 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3531 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3532 | { | |
3533 | reloc_entry->address += input_section->output_offset; | |
3534 | return bfd_reloc_ok; | |
3535 | } | |
3536 | ||
3537 | if (output_bfd != NULL) | |
3538 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3539 | return bfd_reloc_continue; | |
3540 | ||
3541 | return nios2_elf32_do_call26_relocate (abfd, reloc_entry->howto, | |
3542 | input_section, | |
3543 | data, reloc_entry->address, | |
3544 | (symbol->value | |
3545 | + symbol->section->output_section->vma | |
3546 | + symbol->section->output_offset), | |
3547 | reloc_entry->addend); | |
3548 | } | |
3549 | ||
3550 | static bfd_reloc_status_type | |
3551 | nios2_elf32_gprel_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1b786873 | 3552 | void *data, asection *input_section, |
36591ba1 SL |
3553 | bfd *output_bfd, char **msg) |
3554 | { | |
3555 | bfd_vma relocation; | |
3556 | bfd_vma gp; | |
3557 | bfd_reloc_status_type r; | |
3558 | ||
3559 | ||
3560 | /* This part is from bfd_elf_generic_reloc. */ | |
3561 | if (output_bfd != NULL | |
3562 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3563 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3564 | { | |
3565 | reloc_entry->address += input_section->output_offset; | |
3566 | return bfd_reloc_ok; | |
3567 | } | |
3568 | ||
3569 | if (output_bfd != NULL) | |
3570 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3571 | return bfd_reloc_continue; | |
3572 | ||
3573 | relocation = (symbol->value | |
3574 | + symbol->section->output_section->vma | |
3575 | + symbol->section->output_offset); | |
3576 | ||
3577 | /* This assumes we've already cached the _gp symbol. */ | |
3578 | r = nios2_elf_final_gp (abfd, symbol, FALSE, msg, &gp); | |
3579 | if (r == bfd_reloc_ok) | |
3580 | { | |
3581 | relocation = relocation + reloc_entry->addend - gp; | |
3582 | reloc_entry->addend = 0; | |
3583 | if ((signed) relocation < -32768 || (signed) relocation > 32767) | |
3584 | { | |
3585 | *msg = _("global pointer relative address out of range"); | |
3586 | r = bfd_reloc_outofrange; | |
3587 | } | |
3588 | else | |
3589 | r = nios2_elf32_do_gprel_relocate (abfd, reloc_entry->howto, | |
3590 | input_section, | |
3591 | data, reloc_entry->address, | |
3592 | relocation, reloc_entry->addend); | |
3593 | } | |
3594 | ||
3595 | return r; | |
3596 | } | |
3597 | ||
3598 | static bfd_reloc_status_type | |
3599 | nios2_elf32_ujmp_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1b786873 | 3600 | void *data, asection *input_section, |
36591ba1 SL |
3601 | bfd *output_bfd, char **msg ATTRIBUTE_UNUSED) |
3602 | { | |
3603 | /* This part is from bfd_elf_generic_reloc. */ | |
3604 | if (output_bfd != NULL | |
3605 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3606 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3607 | { | |
3608 | reloc_entry->address += input_section->output_offset; | |
3609 | return bfd_reloc_ok; | |
3610 | } | |
3611 | ||
3612 | if (output_bfd != NULL) | |
3613 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3614 | return bfd_reloc_continue; | |
3615 | ||
3616 | return nios2_elf32_do_ujmp_relocate (abfd, reloc_entry->howto, | |
3617 | input_section, | |
3618 | data, reloc_entry->address, | |
3619 | (symbol->value | |
3620 | + symbol->section->output_section->vma | |
3621 | + symbol->section->output_offset), | |
3622 | reloc_entry->addend); | |
3623 | } | |
3624 | ||
3625 | static bfd_reloc_status_type | |
3626 | nios2_elf32_cjmp_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1b786873 | 3627 | void *data, asection *input_section, |
36591ba1 SL |
3628 | bfd *output_bfd, char **msg ATTRIBUTE_UNUSED) |
3629 | { | |
3630 | /* This part is from bfd_elf_generic_reloc. */ | |
3631 | if (output_bfd != NULL | |
3632 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3633 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3634 | { | |
3635 | reloc_entry->address += input_section->output_offset; | |
3636 | return bfd_reloc_ok; | |
3637 | } | |
3638 | ||
3639 | if (output_bfd != NULL) | |
3640 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3641 | return bfd_reloc_continue; | |
3642 | ||
3643 | return nios2_elf32_do_cjmp_relocate (abfd, reloc_entry->howto, | |
3644 | input_section, | |
3645 | data, reloc_entry->address, | |
3646 | (symbol->value | |
3647 | + symbol->section->output_section->vma | |
3648 | + symbol->section->output_offset), | |
3649 | reloc_entry->addend); | |
3650 | } | |
3651 | ||
3652 | static bfd_reloc_status_type | |
3653 | nios2_elf32_callr_relocate (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1b786873 | 3654 | void *data, asection *input_section, |
36591ba1 SL |
3655 | bfd *output_bfd, char **msg ATTRIBUTE_UNUSED) |
3656 | { | |
3657 | /* This part is from bfd_elf_generic_reloc. */ | |
3658 | if (output_bfd != NULL | |
3659 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
3660 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
3661 | { | |
3662 | reloc_entry->address += input_section->output_offset; | |
3663 | return bfd_reloc_ok; | |
3664 | } | |
3665 | ||
3666 | if (output_bfd != NULL) | |
3667 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
3668 | return bfd_reloc_continue; | |
3669 | ||
3670 | return nios2_elf32_do_callr_relocate (abfd, reloc_entry->howto, | |
3671 | input_section, | |
3672 | data, reloc_entry->address, | |
3673 | (symbol->value | |
3674 | + symbol->section->output_section->vma | |
3675 | + symbol->section->output_offset), | |
3676 | reloc_entry->addend); | |
3677 | } | |
3678 | ||
1b786873 | 3679 | |
36591ba1 SL |
3680 | /* Implement elf_backend_relocate_section. */ |
3681 | static bfd_boolean | |
3682 | nios2_elf32_relocate_section (bfd *output_bfd, | |
3683 | struct bfd_link_info *info, | |
3684 | bfd *input_bfd, | |
3685 | asection *input_section, | |
3686 | bfd_byte *contents, | |
3687 | Elf_Internal_Rela *relocs, | |
3688 | Elf_Internal_Sym *local_syms, | |
3689 | asection **local_sections) | |
3690 | { | |
3691 | Elf_Internal_Shdr *symtab_hdr; | |
3692 | struct elf_link_hash_entry **sym_hashes; | |
3693 | Elf_Internal_Rela *rel; | |
3694 | Elf_Internal_Rela *relend; | |
3695 | struct elf32_nios2_link_hash_table *htab; | |
3696 | asection *sgot; | |
3697 | asection *splt; | |
3698 | asection *sreloc = NULL; | |
3699 | bfd_vma *local_got_offsets; | |
82e91538 | 3700 | bfd_vma got_base; |
36591ba1 SL |
3701 | |
3702 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3703 | sym_hashes = elf_sym_hashes (input_bfd); | |
3704 | relend = relocs + input_section->reloc_count; | |
3705 | ||
3706 | htab = elf32_nios2_hash_table (info); | |
3707 | sgot = htab->root.sgot; | |
3708 | splt = htab->root.splt; | |
3709 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
3710 | ||
4ef97a1b | 3711 | if (htab->h_gp_got == NULL) |
82e91538 SL |
3712 | got_base = 0; |
3713 | else | |
4ef97a1b | 3714 | got_base = htab->h_gp_got->root.u.def.value; |
82e91538 | 3715 | |
36591ba1 SL |
3716 | for (rel = relocs; rel < relend; rel++) |
3717 | { | |
3718 | reloc_howto_type *howto; | |
3719 | unsigned long r_symndx; | |
3720 | Elf_Internal_Sym *sym; | |
3721 | asection *sec; | |
3722 | struct elf_link_hash_entry *h; | |
3723 | struct elf32_nios2_link_hash_entry *eh; | |
3724 | bfd_vma relocation; | |
3725 | bfd_vma gp; | |
36591ba1 SL |
3726 | bfd_reloc_status_type r = bfd_reloc_ok; |
3727 | const char *name = NULL; | |
3728 | int r_type; | |
3729 | const char *format; | |
a31b8bd9 AM |
3730 | char *msgbuf = NULL; |
3731 | char *msg = NULL; | |
36591ba1 SL |
3732 | bfd_boolean unresolved_reloc; |
3733 | bfd_vma off; | |
3734 | int use_plt; | |
3735 | ||
3736 | r_type = ELF32_R_TYPE (rel->r_info); | |
3737 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3738 | ||
8c163c5a | 3739 | howto = lookup_howto ((unsigned) ELF32_R_TYPE (rel->r_info), output_bfd); |
36591ba1 SL |
3740 | h = NULL; |
3741 | sym = NULL; | |
3742 | sec = NULL; | |
3743 | ||
3744 | if (r_symndx < symtab_hdr->sh_info) | |
3745 | { | |
3746 | sym = local_syms + r_symndx; | |
3747 | sec = local_sections[r_symndx]; | |
3748 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
3749 | } | |
3750 | else | |
3751 | { | |
62d887d4 | 3752 | bfd_boolean warned, ignored; |
36591ba1 SL |
3753 | |
3754 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
3755 | r_symndx, symtab_hdr, sym_hashes, | |
3756 | h, sec, relocation, | |
62d887d4 | 3757 | unresolved_reloc, warned, ignored); |
36591ba1 SL |
3758 | } |
3759 | ||
3760 | if (sec && discarded_section (sec)) | |
3761 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
3762 | rel, 1, relend, howto, 0, contents); | |
3763 | ||
3764 | /* Nothing more to do unless this is a final link. */ | |
0e1862bb | 3765 | if (bfd_link_relocatable (info)) |
36591ba1 SL |
3766 | continue; |
3767 | ||
36591ba1 SL |
3768 | if (howto) |
3769 | { | |
31a53da5 L |
3770 | bfd_boolean resolved_to_zero; |
3771 | ||
3772 | resolved_to_zero = (h != NULL | |
3773 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
36591ba1 SL |
3774 | switch (howto->type) |
3775 | { | |
3776 | case R_NIOS2_HI16: | |
3777 | r = nios2_elf32_do_hi16_relocate (input_bfd, howto, | |
3778 | input_section, | |
3779 | contents, rel->r_offset, | |
3780 | relocation, rel->r_addend); | |
3781 | break; | |
3782 | case R_NIOS2_LO16: | |
3783 | r = nios2_elf32_do_lo16_relocate (input_bfd, howto, | |
3784 | input_section, | |
3785 | contents, rel->r_offset, | |
3786 | relocation, rel->r_addend); | |
3787 | break; | |
3788 | case R_NIOS2_PCREL_LO: | |
3789 | r = nios2_elf32_do_pcrel_lo16_relocate (input_bfd, howto, | |
3790 | input_section, | |
3791 | contents, | |
3792 | rel->r_offset, | |
3793 | relocation, | |
3794 | rel->r_addend); | |
3795 | break; | |
3796 | case R_NIOS2_HIADJ16: | |
3797 | r = nios2_elf32_do_hiadj16_relocate (input_bfd, howto, | |
3798 | input_section, contents, | |
3799 | rel->r_offset, relocation, | |
3800 | rel->r_addend); | |
3801 | break; | |
3802 | case R_NIOS2_PCREL_HA: | |
3803 | r = nios2_elf32_do_pcrel_hiadj16_relocate (input_bfd, howto, | |
3804 | input_section, | |
3805 | contents, | |
3806 | rel->r_offset, | |
3807 | relocation, | |
3808 | rel->r_addend); | |
3809 | break; | |
3810 | case R_NIOS2_PCREL16: | |
3811 | r = nios2_elf32_do_pcrel16_relocate (input_bfd, howto, | |
3812 | input_section, contents, | |
3813 | rel->r_offset, relocation, | |
3814 | rel->r_addend); | |
3815 | break; | |
3816 | case R_NIOS2_GPREL: | |
3817 | /* Turns an absolute address into a gp-relative address. */ | |
3818 | if (!nios2_elf_assign_gp (output_bfd, &gp, info)) | |
3819 | { | |
a7be2893 SL |
3820 | bfd_vma reloc_address; |
3821 | ||
3822 | if (sec && sec->output_section) | |
3823 | reloc_address = (sec->output_section->vma | |
3824 | + sec->output_offset | |
3825 | + rel->r_offset); | |
3826 | else | |
3827 | reloc_address = 0; | |
3828 | ||
36591ba1 | 3829 | format = _("global pointer relative relocation at address " |
a31b8bd9 | 3830 | "%#" PRIx64 " when _gp not defined\n"); |
34d75fb5 AM |
3831 | if (asprintf (&msgbuf, format, |
3832 | (uint64_t) reloc_address) == -1) | |
3833 | msgbuf = NULL; | |
36591ba1 SL |
3834 | msg = msgbuf; |
3835 | r = bfd_reloc_dangerous; | |
3836 | } | |
3837 | else | |
3838 | { | |
3839 | bfd_vma symbol_address = rel->r_addend + relocation; | |
a7be2893 | 3840 | relocation = symbol_address - gp; |
36591ba1 SL |
3841 | rel->r_addend = 0; |
3842 | if (((signed) relocation < -32768 | |
3843 | || (signed) relocation > 32767) | |
3844 | && (!h | |
3845 | || h->root.type == bfd_link_hash_defined | |
3846 | || h->root.type == bfd_link_hash_defweak)) | |
3847 | { | |
a7be2893 SL |
3848 | if (h) |
3849 | name = h->root.root.string; | |
a31b8bd9 AM |
3850 | else |
3851 | { | |
3852 | name = (bfd_elf_string_from_elf_section | |
3853 | (input_bfd, symtab_hdr->sh_link, | |
3854 | sym->st_name)); | |
3855 | if (name == NULL || *name == '\0') | |
fd361982 | 3856 | name = bfd_section_name (sec); |
a31b8bd9 | 3857 | } |
695344c0 | 3858 | /* xgettext:c-format */ |
a31b8bd9 AM |
3859 | format = _("unable to reach %s (at %#" PRIx64 ") from " |
3860 | "the global pointer (at %#" PRIx64 ") " | |
3861 | "because the offset (%" PRId64 ") is out of " | |
3862 | "the allowed range, -32678 to 32767\n" ); | |
34d75fb5 AM |
3863 | if (asprintf (&msgbuf, format, name, |
3864 | (uint64_t) symbol_address, (uint64_t) gp, | |
3865 | (int64_t) relocation) == -1) | |
3866 | msgbuf = NULL; | |
36591ba1 SL |
3867 | msg = msgbuf; |
3868 | r = bfd_reloc_outofrange; | |
3869 | } | |
3870 | else | |
3871 | r = _bfd_final_link_relocate (howto, input_bfd, | |
3872 | input_section, contents, | |
3873 | rel->r_offset, relocation, | |
3874 | rel->r_addend); | |
3875 | } | |
36591ba1 SL |
3876 | break; |
3877 | case R_NIOS2_UJMP: | |
3878 | r = nios2_elf32_do_ujmp_relocate (input_bfd, howto, | |
3879 | input_section, | |
3880 | contents, rel->r_offset, | |
3881 | relocation, rel->r_addend); | |
3882 | break; | |
3883 | case R_NIOS2_CJMP: | |
3884 | r = nios2_elf32_do_cjmp_relocate (input_bfd, howto, | |
3885 | input_section, | |
3886 | contents, rel->r_offset, | |
3887 | relocation, rel->r_addend); | |
3888 | break; | |
3889 | case R_NIOS2_CALLR: | |
3890 | r = nios2_elf32_do_callr_relocate (input_bfd, howto, | |
3891 | input_section, contents, | |
3892 | rel->r_offset, relocation, | |
3893 | rel->r_addend); | |
3894 | break; | |
3895 | case R_NIOS2_CALL26: | |
78058a5e | 3896 | case R_NIOS2_CALL26_NOAT: |
36591ba1 SL |
3897 | /* If we have a call to an undefined weak symbol, we just want |
3898 | to stuff a zero in the bits of the call instruction and | |
3899 | bypass the normal call26 relocation handling, because it'll | |
3900 | diagnose an overflow error if address 0 isn't in the same | |
3901 | 256MB segment as the call site. Presumably the call | |
3902 | should be guarded by a null check anyway. */ | |
3903 | if (h != NULL && h->root.type == bfd_link_hash_undefweak) | |
3904 | { | |
3905 | BFD_ASSERT (relocation == 0 && rel->r_addend == 0); | |
3906 | r = _bfd_final_link_relocate (howto, input_bfd, | |
3907 | input_section, contents, | |
3908 | rel->r_offset, relocation, | |
3909 | rel->r_addend); | |
3910 | break; | |
3911 | } | |
3912 | /* Handle relocations which should use the PLT entry. | |
3913 | NIOS2_BFD_RELOC_32 relocations will use the symbol's value, | |
3914 | which may point to a PLT entry, but we don't need to handle | |
3915 | that here. If we created a PLT entry, all branches in this | |
3916 | object should go to it. */ | |
3917 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
3918 | { | |
3919 | /* If we've created a .plt section, and assigned a PLT entry | |
3920 | to this function, it should not be known to bind locally. | |
3921 | If it were, we would have cleared the PLT entry. */ | |
3922 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); | |
3923 | ||
3924 | relocation = (splt->output_section->vma | |
3925 | + splt->output_offset | |
3926 | + h->plt.offset); | |
3927 | ||
3928 | unresolved_reloc = FALSE; | |
3929 | } | |
78058a5e SL |
3930 | /* Detect R_NIOS2_CALL26 relocations that would overflow the |
3931 | 256MB segment. Replace the target with a reference to a | |
3932 | trampoline instead. | |
3933 | Note that htab->stub_group is null if relaxation has been | |
3934 | disabled by the --no-relax linker command-line option, so | |
3935 | we can use that to skip this processing entirely. */ | |
3936 | if (howto->type == R_NIOS2_CALL26 && htab->stub_group) | |
3937 | { | |
3938 | bfd_vma dest = relocation + rel->r_addend; | |
3939 | enum elf32_nios2_stub_type stub_type; | |
3940 | ||
3941 | eh = (struct elf32_nios2_link_hash_entry *)h; | |
3942 | stub_type = nios2_type_of_stub (input_section, rel, eh, | |
3943 | htab, dest, NULL); | |
3944 | ||
3945 | if (stub_type != nios2_stub_none) | |
3946 | { | |
3947 | struct elf32_nios2_stub_hash_entry *hsh; | |
3948 | ||
3949 | hsh = nios2_get_stub_entry (input_section, sec, | |
3950 | eh, rel, htab, stub_type); | |
3951 | if (hsh == NULL) | |
3952 | { | |
3953 | r = bfd_reloc_undefined; | |
3954 | break; | |
3955 | } | |
3956 | ||
3957 | dest = (hsh->stub_offset | |
3958 | + hsh->stub_sec->output_offset | |
3959 | + hsh->stub_sec->output_section->vma); | |
3960 | r = nios2_elf32_do_call26_relocate (input_bfd, howto, | |
3961 | input_section, | |
3962 | contents, | |
3963 | rel->r_offset, | |
3964 | dest, 0); | |
3965 | break; | |
3966 | } | |
3967 | } | |
3968 | ||
3969 | /* Normal case. */ | |
36591ba1 SL |
3970 | r = nios2_elf32_do_call26_relocate (input_bfd, howto, |
3971 | input_section, contents, | |
3972 | rel->r_offset, relocation, | |
3973 | rel->r_addend); | |
3974 | break; | |
3975 | case R_NIOS2_ALIGN: | |
3976 | r = bfd_reloc_ok; | |
3977 | /* For symmetry this would be | |
3978 | r = nios2_elf32_do_ignore_reloc (input_bfd, howto, | |
3979 | input_section, contents, | |
3980 | rel->r_offset, relocation, | |
3981 | rel->r_addend); | |
3982 | but do_ignore_reloc would do no more than return | |
3983 | bfd_reloc_ok. */ | |
3984 | break; | |
3985 | ||
3986 | case R_NIOS2_GOT16: | |
3987 | case R_NIOS2_CALL16: | |
1c2de463 SL |
3988 | case R_NIOS2_GOT_LO: |
3989 | case R_NIOS2_GOT_HA: | |
3990 | case R_NIOS2_CALL_LO: | |
3991 | case R_NIOS2_CALL_HA: | |
36591ba1 SL |
3992 | /* Relocation is to the entry for this symbol in the |
3993 | global offset table. */ | |
3994 | if (sgot == NULL) | |
3995 | { | |
3996 | r = bfd_reloc_notsupported; | |
3997 | break; | |
3998 | } | |
3999 | ||
4000 | use_plt = 0; | |
4001 | ||
4002 | if (h != NULL) | |
4003 | { | |
4004 | bfd_boolean dyn; | |
4005 | ||
4006 | eh = (struct elf32_nios2_link_hash_entry *)h; | |
1c2de463 | 4007 | use_plt = (eh->got_types_used == CALL_USED |
36591ba1 SL |
4008 | && h->plt.offset != (bfd_vma) -1); |
4009 | ||
4010 | off = h->got.offset; | |
4011 | BFD_ASSERT (off != (bfd_vma) -1); | |
4ef97a1b | 4012 | dyn = htab->root.dynamic_sections_created; |
0e1862bb L |
4013 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
4014 | bfd_link_pic (info), | |
4015 | h) | |
4016 | || (bfd_link_pic (info) | |
36591ba1 | 4017 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
31a53da5 L |
4018 | || ((ELF_ST_VISIBILITY (h->other) |
4019 | || resolved_to_zero) | |
36591ba1 SL |
4020 | && h->root.type == bfd_link_hash_undefweak)) |
4021 | { | |
4022 | /* This is actually a static link, or it is a -Bsymbolic | |
4023 | link and the symbol is defined locally. We must | |
4024 | initialize this entry in the global offset table. | |
4025 | Since the offset must always be a multiple of 4, we | |
4026 | use the least significant bit to record whether we | |
4027 | have initialized it already. | |
4028 | ||
4029 | When doing a dynamic link, we create a .rela.got | |
4030 | relocation entry to initialize the value. This is | |
4031 | done in the finish_dynamic_symbol routine. */ | |
4032 | if ((off & 1) != 0) | |
4033 | off &= ~1; | |
4034 | else | |
4035 | { | |
4036 | bfd_put_32 (output_bfd, relocation, | |
4037 | sgot->contents + off); | |
4038 | h->got.offset |= 1; | |
4039 | } | |
4040 | } | |
4041 | else | |
4042 | unresolved_reloc = FALSE; | |
4043 | } | |
4044 | else | |
4045 | { | |
4046 | BFD_ASSERT (local_got_offsets != NULL | |
4047 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
4048 | ||
4049 | off = local_got_offsets[r_symndx]; | |
4050 | ||
4051 | /* The offset must always be a multiple of 4. We use the | |
4052 | least significant bit to record whether we have already | |
4053 | generated the necessary reloc. */ | |
4054 | if ((off & 1) != 0) | |
4055 | off &= ~1; | |
4056 | else | |
4057 | { | |
4058 | bfd_put_32 (output_bfd, relocation, | |
4059 | sgot->contents + off); | |
4060 | ||
0e1862bb | 4061 | if (bfd_link_pic (info)) |
36591ba1 SL |
4062 | { |
4063 | asection *srelgot; | |
4064 | Elf_Internal_Rela outrel; | |
4065 | bfd_byte *loc; | |
4066 | ||
4067 | srelgot = htab->root.srelgot; | |
4068 | BFD_ASSERT (srelgot != NULL); | |
4069 | ||
4070 | outrel.r_addend = relocation; | |
4071 | outrel.r_offset = (sgot->output_section->vma | |
4072 | + sgot->output_offset | |
4073 | + off); | |
4074 | outrel.r_info = ELF32_R_INFO (0, R_NIOS2_RELATIVE); | |
4075 | loc = srelgot->contents; | |
4076 | loc += (srelgot->reloc_count++ * | |
4077 | sizeof (Elf32_External_Rela)); | |
4078 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4079 | } | |
4080 | ||
4081 | local_got_offsets[r_symndx] |= 1; | |
4082 | } | |
4083 | } | |
4084 | ||
0e1862bb | 4085 | if (use_plt && bfd_link_pic (info)) |
36591ba1 SL |
4086 | { |
4087 | off = ((h->plt.offset - 24) / 12 + 3) * 4; | |
82e91538 SL |
4088 | relocation = (htab->root.sgotplt->output_offset + off |
4089 | - got_base); | |
36591ba1 SL |
4090 | } |
4091 | else | |
82e91538 | 4092 | relocation = sgot->output_offset + off - got_base; |
36591ba1 SL |
4093 | |
4094 | /* This relocation does not use the addend. */ | |
4095 | rel->r_addend = 0; | |
4096 | ||
1c2de463 SL |
4097 | switch (howto->type) |
4098 | { | |
4099 | case R_NIOS2_GOT_LO: | |
4100 | case R_NIOS2_CALL_LO: | |
4101 | r = nios2_elf32_do_lo16_relocate (input_bfd, howto, | |
4102 | input_section, contents, | |
4103 | rel->r_offset, relocation, | |
4104 | rel->r_addend); | |
4105 | break; | |
4106 | case R_NIOS2_GOT_HA: | |
4107 | case R_NIOS2_CALL_HA: | |
4108 | r = nios2_elf32_do_hiadj16_relocate (input_bfd, howto, | |
4109 | input_section, contents, | |
4110 | rel->r_offset, | |
4111 | relocation, | |
4112 | rel->r_addend); | |
4113 | break; | |
4114 | default: | |
4115 | r = _bfd_final_link_relocate (howto, input_bfd, | |
4116 | input_section, contents, | |
4117 | rel->r_offset, relocation, | |
4118 | rel->r_addend); | |
4119 | break; | |
4120 | } | |
36591ba1 SL |
4121 | break; |
4122 | ||
4123 | case R_NIOS2_GOTOFF_LO: | |
4124 | case R_NIOS2_GOTOFF_HA: | |
4125 | case R_NIOS2_GOTOFF: | |
82e91538 | 4126 | /* Relocation is relative to the global offset table pointer. */ |
36591ba1 SL |
4127 | |
4128 | BFD_ASSERT (sgot != NULL); | |
4129 | if (sgot == NULL) | |
4130 | { | |
4131 | r = bfd_reloc_notsupported; | |
4132 | break; | |
4133 | } | |
4134 | ||
d9972968 CLT |
4135 | /* Note that sgot->output_offset is not involved in this |
4136 | calculation. We always want the start of .got. */ | |
4137 | relocation -= sgot->output_section->vma; | |
4138 | ||
4139 | /* Now we adjust the relocation to be relative to the GOT pointer | |
4140 | (the _gp_got symbol), which possibly contains the 0x8000 bias. */ | |
4141 | relocation -= got_base; | |
82e91538 | 4142 | |
36591ba1 SL |
4143 | switch (howto->type) |
4144 | { | |
4145 | case R_NIOS2_GOTOFF_LO: | |
4146 | r = nios2_elf32_do_lo16_relocate (input_bfd, howto, | |
4147 | input_section, contents, | |
4148 | rel->r_offset, relocation, | |
4149 | rel->r_addend); | |
4150 | break; | |
4151 | case R_NIOS2_GOTOFF_HA: | |
4152 | r = nios2_elf32_do_hiadj16_relocate (input_bfd, howto, | |
4153 | input_section, contents, | |
4154 | rel->r_offset, | |
4155 | relocation, | |
4156 | rel->r_addend); | |
4157 | break; | |
4158 | default: | |
4159 | r = _bfd_final_link_relocate (howto, input_bfd, | |
4160 | input_section, contents, | |
4161 | rel->r_offset, relocation, | |
4162 | rel->r_addend); | |
4163 | break; | |
4164 | } | |
4165 | break; | |
4166 | ||
4167 | case R_NIOS2_TLS_LDO16: | |
4168 | relocation -= dtpoff_base (info) + DTP_OFFSET; | |
4169 | ||
4170 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4171 | contents, rel->r_offset, | |
4172 | relocation, rel->r_addend); | |
4173 | break; | |
4174 | case R_NIOS2_TLS_LDM16: | |
4175 | if (htab->root.sgot == NULL) | |
4176 | abort (); | |
4177 | ||
4178 | off = htab->tls_ldm_got.offset; | |
4179 | ||
4180 | if ((off & 1) != 0) | |
4181 | off &= ~1; | |
4182 | else | |
4183 | { | |
4184 | /* If we don't know the module number, create a relocation | |
4185 | for it. */ | |
0e1862bb | 4186 | if (bfd_link_pic (info)) |
36591ba1 SL |
4187 | { |
4188 | Elf_Internal_Rela outrel; | |
4189 | bfd_byte *loc; | |
4190 | ||
4191 | if (htab->root.srelgot == NULL) | |
4192 | abort (); | |
4193 | ||
4194 | outrel.r_addend = 0; | |
4195 | outrel.r_offset = (htab->root.sgot->output_section->vma | |
4196 | + htab->root.sgot->output_offset | |
4197 | + off); | |
4198 | outrel.r_info = ELF32_R_INFO (0, R_NIOS2_TLS_DTPMOD); | |
4199 | ||
4200 | loc = htab->root.srelgot->contents; | |
4201 | loc += (htab->root.srelgot->reloc_count++ | |
4202 | * sizeof (Elf32_External_Rela)); | |
4203 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4204 | } | |
4205 | else | |
4206 | bfd_put_32 (output_bfd, 1, | |
4207 | htab->root.sgot->contents + off); | |
4208 | ||
4209 | htab->tls_ldm_got.offset |= 1; | |
4210 | } | |
4211 | ||
82e91538 | 4212 | relocation = htab->root.sgot->output_offset + off - got_base; |
36591ba1 SL |
4213 | |
4214 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4215 | contents, rel->r_offset, | |
4216 | relocation, rel->r_addend); | |
4217 | ||
4218 | break; | |
4219 | case R_NIOS2_TLS_GD16: | |
4220 | case R_NIOS2_TLS_IE16: | |
4221 | { | |
4222 | int indx; | |
4223 | char tls_type; | |
4224 | ||
4225 | if (htab->root.sgot == NULL) | |
4226 | abort (); | |
4227 | ||
4228 | indx = 0; | |
4229 | if (h != NULL) | |
4230 | { | |
4231 | bfd_boolean dyn; | |
4232 | dyn = htab->root.dynamic_sections_created; | |
0e1862bb L |
4233 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
4234 | bfd_link_pic (info), | |
4235 | h) | |
4236 | && (!bfd_link_pic (info) | |
36591ba1 SL |
4237 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
4238 | { | |
4239 | unresolved_reloc = FALSE; | |
4240 | indx = h->dynindx; | |
4241 | } | |
4242 | off = h->got.offset; | |
4243 | tls_type = (((struct elf32_nios2_link_hash_entry *) h) | |
4244 | ->tls_type); | |
4245 | } | |
4246 | else | |
4247 | { | |
4248 | if (local_got_offsets == NULL) | |
4249 | abort (); | |
4250 | off = local_got_offsets[r_symndx]; | |
4251 | tls_type = (elf32_nios2_local_got_tls_type (input_bfd) | |
4252 | [r_symndx]); | |
4253 | } | |
4254 | ||
4255 | if (tls_type == GOT_UNKNOWN) | |
4256 | abort (); | |
4257 | ||
4258 | if ((off & 1) != 0) | |
4259 | off &= ~1; | |
4260 | else | |
4261 | { | |
4262 | bfd_boolean need_relocs = FALSE; | |
4263 | Elf_Internal_Rela outrel; | |
4264 | bfd_byte *loc = NULL; | |
4265 | int cur_off = off; | |
4266 | ||
4267 | /* The GOT entries have not been initialized yet. Do it | |
4268 | now, and emit any relocations. If both an IE GOT and a | |
4269 | GD GOT are necessary, we emit the GD first. */ | |
4270 | ||
0e1862bb | 4271 | if ((bfd_link_pic (info) || indx != 0) |
36591ba1 | 4272 | && (h == NULL |
31a53da5 L |
4273 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
4274 | && !resolved_to_zero) | |
36591ba1 SL |
4275 | || h->root.type != bfd_link_hash_undefweak)) |
4276 | { | |
4277 | need_relocs = TRUE; | |
4278 | if (htab->root.srelgot == NULL) | |
4279 | abort (); | |
4280 | loc = htab->root.srelgot->contents; | |
4281 | loc += (htab->root.srelgot->reloc_count * | |
4282 | sizeof (Elf32_External_Rela)); | |
4283 | } | |
4284 | ||
4285 | if (tls_type & GOT_TLS_GD) | |
4286 | { | |
4287 | if (need_relocs) | |
4288 | { | |
4289 | outrel.r_addend = 0; | |
4290 | outrel.r_offset = (htab->root.sgot->output_section->vma | |
4291 | + htab->root.sgot->output_offset | |
4292 | + cur_off); | |
4293 | outrel.r_info = ELF32_R_INFO (indx, | |
4294 | R_NIOS2_TLS_DTPMOD); | |
4295 | ||
4296 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
4297 | loc); | |
4298 | htab->root.srelgot->reloc_count++; | |
4299 | loc += sizeof (Elf32_External_Rela); | |
4300 | ||
4301 | if (indx == 0) | |
4302 | bfd_put_32 (output_bfd, | |
4303 | (relocation - dtpoff_base (info) - | |
4304 | DTP_OFFSET), | |
4305 | htab->root.sgot->contents + cur_off + 4); | |
4306 | else | |
4307 | { | |
4308 | outrel.r_addend = 0; | |
4309 | outrel.r_info = ELF32_R_INFO (indx, | |
4310 | R_NIOS2_TLS_DTPREL); | |
4311 | outrel.r_offset += 4; | |
4312 | ||
4313 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
4314 | loc); | |
4315 | htab->root.srelgot->reloc_count++; | |
4316 | loc += sizeof (Elf32_External_Rela); | |
4317 | } | |
4318 | } | |
4319 | else | |
4320 | { | |
4321 | /* If we are not emitting relocations for a | |
4322 | general dynamic reference, then we must be in a | |
4323 | static link or an executable link with the | |
4324 | symbol binding locally. Mark it as belonging | |
4325 | to module 1, the executable. */ | |
4326 | bfd_put_32 (output_bfd, 1, | |
4327 | htab->root.sgot->contents + cur_off); | |
4328 | bfd_put_32 (output_bfd, (relocation - | |
4329 | dtpoff_base (info) - | |
4330 | DTP_OFFSET), | |
4331 | htab->root.sgot->contents + cur_off + 4); | |
4332 | } | |
4333 | ||
4334 | cur_off += 8; | |
4335 | } | |
4336 | ||
4337 | if (tls_type & GOT_TLS_IE) | |
4338 | { | |
4339 | if (need_relocs) | |
4340 | { | |
4341 | if (indx == 0) | |
4342 | outrel.r_addend = (relocation - | |
4343 | dtpoff_base (info)); | |
4344 | else | |
4345 | outrel.r_addend = 0; | |
4346 | outrel.r_offset = (htab->root.sgot->output_section->vma | |
4347 | + htab->root.sgot->output_offset | |
4348 | + cur_off); | |
4349 | outrel.r_info = ELF32_R_INFO (indx, | |
4350 | R_NIOS2_TLS_TPREL); | |
4351 | ||
4352 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
4353 | loc); | |
4354 | htab->root.srelgot->reloc_count++; | |
4355 | loc += sizeof (Elf32_External_Rela); | |
4356 | } | |
4357 | else | |
4358 | bfd_put_32 (output_bfd, (tpoff (info, relocation) | |
4359 | - TP_OFFSET), | |
4360 | htab->root.sgot->contents + cur_off); | |
4361 | cur_off += 4; | |
4362 | } | |
4363 | ||
4364 | if (h != NULL) | |
4365 | h->got.offset |= 1; | |
4366 | else | |
4367 | local_got_offsets[r_symndx] |= 1; | |
4368 | } | |
4369 | ||
4370 | if ((tls_type & GOT_TLS_GD) && r_type != R_NIOS2_TLS_GD16) | |
4371 | off += 8; | |
82e91538 | 4372 | relocation = htab->root.sgot->output_offset + off - got_base; |
36591ba1 SL |
4373 | |
4374 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4375 | contents, rel->r_offset, | |
4376 | relocation, rel->r_addend); | |
4377 | } | |
4378 | ||
4379 | break; | |
4380 | case R_NIOS2_TLS_LE16: | |
3cbc1e5e | 4381 | if (bfd_link_dll (info)) |
36591ba1 | 4382 | { |
4eca0228 | 4383 | _bfd_error_handler |
695344c0 | 4384 | /* xgettext:c-format */ |
2dcf00ce | 4385 | (_("%pB(%pA+%#" PRIx64 "): %s relocation not " |
36591ba1 SL |
4386 | "permitted in shared object"), |
4387 | input_bfd, input_section, | |
2dcf00ce | 4388 | (uint64_t) rel->r_offset, howto->name); |
36591ba1 SL |
4389 | return FALSE; |
4390 | } | |
4391 | else | |
4392 | relocation = tpoff (info, relocation) - TP_OFFSET; | |
4393 | ||
4394 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4395 | contents, rel->r_offset, | |
4396 | relocation, rel->r_addend); | |
4397 | break; | |
4398 | ||
4399 | case R_NIOS2_BFD_RELOC_32: | |
0e1862bb | 4400 | if (bfd_link_pic (info) |
36591ba1 SL |
4401 | && (input_section->flags & SEC_ALLOC) != 0 |
4402 | && (h == NULL | |
31a53da5 L |
4403 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
4404 | && !resolved_to_zero) | |
36591ba1 SL |
4405 | || h->root.type != bfd_link_hash_undefweak)) |
4406 | { | |
4407 | Elf_Internal_Rela outrel; | |
4408 | bfd_byte *loc; | |
4409 | bfd_boolean skip, relocate; | |
4410 | ||
4411 | /* When generating a shared object, these relocations | |
4412 | are copied into the output file to be resolved at run | |
4413 | time. */ | |
4414 | ||
4415 | skip = FALSE; | |
4416 | relocate = FALSE; | |
4417 | ||
4418 | outrel.r_offset | |
4419 | = _bfd_elf_section_offset (output_bfd, info, | |
4420 | input_section, rel->r_offset); | |
4421 | if (outrel.r_offset == (bfd_vma) -1) | |
4422 | skip = TRUE; | |
4423 | else if (outrel.r_offset == (bfd_vma) -2) | |
4424 | skip = TRUE, relocate = TRUE; | |
4425 | outrel.r_offset += (input_section->output_section->vma | |
4426 | + input_section->output_offset); | |
4427 | ||
4428 | if (skip) | |
4429 | memset (&outrel, 0, sizeof outrel); | |
4430 | else if (h != NULL | |
4431 | && h->dynindx != -1 | |
0e1862bb | 4432 | && (!bfd_link_pic (info) |
a496fbc8 | 4433 | || !SYMBOLIC_BIND (info, h) |
36591ba1 SL |
4434 | || !h->def_regular)) |
4435 | { | |
4436 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4437 | outrel.r_addend = rel->r_addend; | |
4438 | } | |
4439 | else | |
4440 | { | |
4441 | /* This symbol is local, or marked to become local. */ | |
4442 | outrel.r_addend = relocation + rel->r_addend; | |
4443 | relocate = TRUE; | |
4444 | outrel.r_info = ELF32_R_INFO (0, R_NIOS2_RELATIVE); | |
4445 | } | |
4446 | ||
4447 | sreloc = elf_section_data (input_section)->sreloc; | |
4448 | if (sreloc == NULL) | |
4449 | abort (); | |
4450 | ||
4451 | loc = sreloc->contents; | |
4452 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
4453 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4454 | ||
4455 | /* This reloc will be computed at runtime, so there's no | |
4456 | need to do anything now, except for R_NIOS2_BFD_RELOC_32 | |
4457 | relocations that have been turned into | |
4458 | R_NIOS2_RELATIVE. */ | |
4459 | if (!relocate) | |
4460 | break; | |
4461 | } | |
4462 | ||
4463 | r = _bfd_final_link_relocate (howto, input_bfd, | |
4464 | input_section, contents, | |
4465 | rel->r_offset, relocation, | |
4466 | rel->r_addend); | |
4467 | break; | |
4468 | ||
4469 | case R_NIOS2_TLS_DTPREL: | |
4470 | relocation -= dtpoff_base (info); | |
4471 | /* Fall through. */ | |
4472 | ||
4473 | default: | |
4474 | r = _bfd_final_link_relocate (howto, input_bfd, | |
4475 | input_section, contents, | |
4476 | rel->r_offset, relocation, | |
4477 | rel->r_addend); | |
4478 | break; | |
4479 | } | |
4480 | } | |
4481 | else | |
4482 | r = bfd_reloc_notsupported; | |
4483 | ||
4484 | if (r != bfd_reloc_ok) | |
4485 | { | |
4486 | if (h != NULL) | |
4487 | name = h->root.root.string; | |
4488 | else | |
4489 | { | |
4490 | name = bfd_elf_string_from_elf_section (input_bfd, | |
4491 | symtab_hdr->sh_link, | |
4492 | sym->st_name); | |
4493 | if (name == NULL || *name == '\0') | |
fd361982 | 4494 | name = bfd_section_name (sec); |
36591ba1 SL |
4495 | } |
4496 | ||
4497 | switch (r) | |
4498 | { | |
4499 | case bfd_reloc_overflow: | |
1a72702b AM |
4500 | (*info->callbacks->reloc_overflow) (info, NULL, name, |
4501 | howto->name, (bfd_vma) 0, | |
4502 | input_bfd, input_section, | |
4503 | rel->r_offset); | |
36591ba1 SL |
4504 | break; |
4505 | ||
4506 | case bfd_reloc_undefined: | |
1a72702b AM |
4507 | (*info->callbacks->undefined_symbol) (info, name, input_bfd, |
4508 | input_section, | |
4509 | rel->r_offset, TRUE); | |
36591ba1 SL |
4510 | break; |
4511 | ||
4512 | case bfd_reloc_outofrange: | |
4513 | if (msg == NULL) | |
4514 | msg = _("relocation out of range"); | |
4515 | break; | |
4516 | ||
4517 | case bfd_reloc_notsupported: | |
4518 | if (msg == NULL) | |
4519 | msg = _("unsupported relocation"); | |
4520 | break; | |
4521 | ||
4522 | case bfd_reloc_dangerous: | |
4523 | if (msg == NULL) | |
4524 | msg = _("dangerous relocation"); | |
4525 | break; | |
4526 | ||
4527 | default: | |
4528 | if (msg == NULL) | |
4529 | msg = _("unknown error"); | |
4530 | break; | |
4531 | } | |
4532 | ||
4533 | if (msg) | |
4534 | { | |
1a72702b AM |
4535 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
4536 | input_section, rel->r_offset); | |
c9594989 | 4537 | free (msgbuf); |
36591ba1 SL |
4538 | return FALSE; |
4539 | } | |
4540 | } | |
4541 | } | |
4542 | return TRUE; | |
4543 | } | |
4544 | ||
4545 | /* Implement elf-backend_section_flags: | |
4546 | Convert NIOS2 specific section flags to bfd internal section flags. */ | |
4547 | static bfd_boolean | |
8c803a2d | 4548 | nios2_elf32_section_flags (const Elf_Internal_Shdr *hdr) |
36591ba1 SL |
4549 | { |
4550 | if (hdr->sh_flags & SHF_NIOS2_GPREL) | |
8c803a2d | 4551 | hdr->bfd_section->flags |= SEC_SMALL_DATA; |
36591ba1 SL |
4552 | |
4553 | return TRUE; | |
4554 | } | |
4555 | ||
4556 | /* Implement elf_backend_fake_sections: | |
4557 | Set the correct type for an NIOS2 ELF section. We do this by the | |
4558 | section name, which is a hack, but ought to work. */ | |
4559 | static bfd_boolean | |
4560 | nios2_elf32_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, | |
4561 | Elf_Internal_Shdr *hdr, asection *sec) | |
4562 | { | |
fd361982 | 4563 | const char *name = bfd_section_name (sec); |
36591ba1 SL |
4564 | |
4565 | if ((sec->flags & SEC_SMALL_DATA) | |
4566 | || strcmp (name, ".sdata") == 0 | |
4567 | || strcmp (name, ".sbss") == 0 | |
4568 | || strcmp (name, ".lit4") == 0 || strcmp (name, ".lit8") == 0) | |
4569 | hdr->sh_flags |= SHF_NIOS2_GPREL; | |
4570 | ||
4571 | return TRUE; | |
4572 | } | |
4573 | ||
4574 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
4575 | shortcuts to them in our hash table. */ | |
4576 | static bfd_boolean | |
4577 | create_got_section (bfd *dynobj, struct bfd_link_info *info) | |
4578 | { | |
4579 | struct elf32_nios2_link_hash_table *htab; | |
82e91538 | 4580 | struct elf_link_hash_entry *h; |
36591ba1 SL |
4581 | |
4582 | htab = elf32_nios2_hash_table (info); | |
4583 | ||
4584 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
4585 | return FALSE; | |
4586 | ||
4587 | /* In order for the two loads in .PLTresolve to share the same %hiadj, | |
4588 | _GLOBAL_OFFSET_TABLE_ must be aligned to a 16-byte boundary. */ | |
fd361982 | 4589 | if (!bfd_set_section_alignment (htab->root.sgotplt, 4)) |
36591ba1 SL |
4590 | return FALSE; |
4591 | ||
82e91538 SL |
4592 | /* The Nios II ABI specifies that GOT-relative relocations are relative |
4593 | to the linker-created symbol _gp_got, rather than using | |
4594 | _GLOBAL_OFFSET_TABLE_ directly. In particular, the latter always | |
4595 | points to the base of the GOT while _gp_got may include a bias. */ | |
4596 | h = _bfd_elf_define_linkage_sym (dynobj, info, htab->root.sgotplt, | |
4597 | "_gp_got"); | |
4ef97a1b | 4598 | htab->h_gp_got = h; |
82e91538 SL |
4599 | if (h == NULL) |
4600 | return FALSE; | |
4601 | ||
36591ba1 SL |
4602 | return TRUE; |
4603 | } | |
4604 | ||
4605 | /* Implement elf_backend_create_dynamic_sections: | |
4606 | Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
4607 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
4608 | hash table. */ | |
4609 | static bfd_boolean | |
4610 | nios2_elf32_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) | |
4611 | { | |
4612 | struct elf32_nios2_link_hash_table *htab; | |
4613 | ||
4614 | htab = elf32_nios2_hash_table (info); | |
4615 | if (!htab->root.sgot && !create_got_section (dynobj, info)) | |
4616 | return FALSE; | |
4617 | ||
9d19e4fd AM |
4618 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
4619 | return FALSE; | |
36591ba1 SL |
4620 | |
4621 | /* In order for the two loads in a shared object .PLTresolve to share the | |
4622 | same %hiadj, the start of the PLT (as well as the GOT) must be aligned | |
4623 | to a 16-byte boundary. This is because the addresses for these loads | |
4624 | include the -(.plt+4) PIC correction. */ | |
fd361982 | 4625 | return bfd_set_section_alignment (htab->root.splt, 4); |
36591ba1 SL |
4626 | } |
4627 | ||
4628 | /* Implement elf_backend_copy_indirect_symbol: | |
4629 | Copy the extra info we tack onto an elf_link_hash_entry. */ | |
4630 | static void | |
4631 | nios2_elf32_copy_indirect_symbol (struct bfd_link_info *info, | |
4632 | struct elf_link_hash_entry *dir, | |
4633 | struct elf_link_hash_entry *ind) | |
4634 | { | |
4635 | struct elf32_nios2_link_hash_entry *edir, *eind; | |
4636 | ||
4637 | edir = (struct elf32_nios2_link_hash_entry *) dir; | |
4638 | eind = (struct elf32_nios2_link_hash_entry *) ind; | |
4639 | ||
36591ba1 SL |
4640 | if (ind->root.type == bfd_link_hash_indirect |
4641 | && dir->got.refcount <= 0) | |
4642 | { | |
4643 | edir->tls_type = eind->tls_type; | |
4644 | eind->tls_type = GOT_UNKNOWN; | |
4645 | } | |
4646 | ||
4647 | edir->got_types_used |= eind->got_types_used; | |
4648 | ||
4649 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
4650 | } | |
4651 | ||
965b1d80 SL |
4652 | /* Set the right machine number for a NIOS2 ELF file. */ |
4653 | ||
4654 | static bfd_boolean | |
4655 | nios2_elf32_object_p (bfd *abfd) | |
4656 | { | |
4657 | unsigned long mach; | |
4658 | ||
4659 | mach = elf_elfheader (abfd)->e_flags; | |
4660 | ||
4661 | switch (mach) | |
4662 | { | |
4663 | default: | |
4664 | case EF_NIOS2_ARCH_R1: | |
4665 | bfd_default_set_arch_mach (abfd, bfd_arch_nios2, bfd_mach_nios2r1); | |
4666 | break; | |
4667 | case EF_NIOS2_ARCH_R2: | |
4668 | bfd_default_set_arch_mach (abfd, bfd_arch_nios2, bfd_mach_nios2r2); | |
4669 | break; | |
4670 | } | |
4671 | ||
4672 | return TRUE; | |
4673 | } | |
4674 | ||
36591ba1 SL |
4675 | /* Implement elf_backend_check_relocs: |
4676 | Look through the relocs for a section during the first phase. */ | |
4677 | static bfd_boolean | |
4678 | nios2_elf32_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
4679 | asection *sec, const Elf_Internal_Rela *relocs) | |
4680 | { | |
36591ba1 SL |
4681 | Elf_Internal_Shdr *symtab_hdr; |
4682 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4683 | const Elf_Internal_Rela *rel; | |
4684 | const Elf_Internal_Rela *rel_end; | |
4685 | struct elf32_nios2_link_hash_table *htab; | |
36591ba1 SL |
4686 | asection *sreloc = NULL; |
4687 | bfd_signed_vma *local_got_refcounts; | |
4688 | ||
0e1862bb | 4689 | if (bfd_link_relocatable (info)) |
36591ba1 SL |
4690 | return TRUE; |
4691 | ||
36591ba1 SL |
4692 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
4693 | sym_hashes = elf_sym_hashes (abfd); | |
4694 | sym_hashes_end = (sym_hashes | |
4695 | + symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); | |
4696 | if (!elf_bad_symtab (abfd)) | |
4697 | sym_hashes_end -= symtab_hdr->sh_info; | |
4698 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
4699 | ||
4700 | htab = elf32_nios2_hash_table (info); | |
36591ba1 SL |
4701 | |
4702 | rel_end = relocs + sec->reloc_count; | |
4703 | for (rel = relocs; rel < rel_end; rel++) | |
4704 | { | |
4705 | unsigned int r_type; | |
4706 | struct elf_link_hash_entry *h; | |
4707 | unsigned long r_symndx; | |
4708 | ||
4709 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4710 | if (r_symndx < symtab_hdr->sh_info) | |
4711 | h = NULL; | |
4712 | else | |
4713 | { | |
4714 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4715 | while (h->root.type == bfd_link_hash_indirect | |
4716 | || h->root.type == bfd_link_hash_warning) | |
4717 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4718 | } | |
4719 | ||
4720 | r_type = ELF32_R_TYPE (rel->r_info); | |
4721 | ||
4722 | switch (r_type) | |
4723 | { | |
4724 | case R_NIOS2_GOT16: | |
1c2de463 SL |
4725 | case R_NIOS2_GOT_LO: |
4726 | case R_NIOS2_GOT_HA: | |
36591ba1 | 4727 | case R_NIOS2_CALL16: |
1c2de463 SL |
4728 | case R_NIOS2_CALL_LO: |
4729 | case R_NIOS2_CALL_HA: | |
36591ba1 SL |
4730 | case R_NIOS2_TLS_GD16: |
4731 | case R_NIOS2_TLS_IE16: | |
4732 | /* This symbol requires a global offset table entry. */ | |
4733 | { | |
4734 | int tls_type, old_tls_type; | |
4735 | ||
4736 | switch (r_type) | |
4737 | { | |
4738 | default: | |
4739 | case R_NIOS2_GOT16: | |
1c2de463 SL |
4740 | case R_NIOS2_GOT_LO: |
4741 | case R_NIOS2_GOT_HA: | |
36591ba1 | 4742 | case R_NIOS2_CALL16: |
1c2de463 SL |
4743 | case R_NIOS2_CALL_LO: |
4744 | case R_NIOS2_CALL_HA: | |
36591ba1 SL |
4745 | tls_type = GOT_NORMAL; |
4746 | break; | |
4747 | case R_NIOS2_TLS_GD16: | |
4748 | tls_type = GOT_TLS_GD; | |
4749 | break; | |
4750 | case R_NIOS2_TLS_IE16: | |
4751 | tls_type = GOT_TLS_IE; | |
4752 | break; | |
4753 | } | |
4754 | ||
36591ba1 SL |
4755 | if (h != NULL) |
4756 | { | |
4757 | struct elf32_nios2_link_hash_entry *eh | |
4758 | = (struct elf32_nios2_link_hash_entry *)h; | |
4759 | h->got.refcount++; | |
4760 | old_tls_type = elf32_nios2_hash_entry(h)->tls_type; | |
1c2de463 SL |
4761 | if (r_type == R_NIOS2_CALL16 |
4762 | || r_type == R_NIOS2_CALL_LO | |
4763 | || r_type == R_NIOS2_CALL_HA) | |
36591ba1 SL |
4764 | { |
4765 | /* Make sure a plt entry is created for this symbol if | |
4766 | it turns out to be a function defined by a dynamic | |
4767 | object. */ | |
4768 | h->plt.refcount++; | |
4769 | h->needs_plt = 1; | |
4770 | h->type = STT_FUNC; | |
1c2de463 | 4771 | eh->got_types_used |= CALL_USED; |
36591ba1 SL |
4772 | } |
4773 | else | |
1c2de463 | 4774 | eh->got_types_used |= GOT_USED; |
36591ba1 SL |
4775 | } |
4776 | else | |
4777 | { | |
4778 | /* This is a global offset table entry for a local symbol. */ | |
4779 | if (local_got_refcounts == NULL) | |
4780 | { | |
4781 | bfd_size_type size; | |
4782 | ||
4783 | size = symtab_hdr->sh_info; | |
4784 | size *= (sizeof (bfd_signed_vma) + sizeof (char)); | |
4785 | local_got_refcounts | |
4786 | = ((bfd_signed_vma *) bfd_zalloc (abfd, size)); | |
4787 | if (local_got_refcounts == NULL) | |
4788 | return FALSE; | |
4789 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
4790 | elf32_nios2_local_got_tls_type (abfd) | |
4791 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
4792 | } | |
4793 | local_got_refcounts[r_symndx]++; | |
4794 | old_tls_type = elf32_nios2_local_got_tls_type (abfd) [r_symndx]; | |
4795 | } | |
4796 | ||
4797 | /* We will already have issued an error message if there is a | |
4798 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
4799 | support any linker relaxations. So just combine any TLS | |
4800 | types needed. */ | |
4801 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
4802 | && tls_type != GOT_NORMAL) | |
4803 | tls_type |= old_tls_type; | |
4804 | ||
4805 | if (old_tls_type != tls_type) | |
4806 | { | |
4807 | if (h != NULL) | |
4808 | elf32_nios2_hash_entry (h)->tls_type = tls_type; | |
4809 | else | |
4810 | elf32_nios2_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
4811 | } | |
4812 | } | |
4ef97a1b | 4813 | make_got: |
36591ba1 SL |
4814 | if (htab->root.sgot == NULL) |
4815 | { | |
4816 | if (htab->root.dynobj == NULL) | |
4817 | htab->root.dynobj = abfd; | |
4818 | if (!create_got_section (htab->root.dynobj, info)) | |
4819 | return FALSE; | |
4820 | } | |
4821 | break; | |
4822 | ||
4ef97a1b AM |
4823 | case R_NIOS2_TLS_LDM16: |
4824 | htab->tls_ldm_got.refcount++; | |
4825 | goto make_got; | |
4826 | ||
36591ba1 SL |
4827 | /* This relocation describes the C++ object vtable hierarchy. |
4828 | Reconstruct it for later use during GC. */ | |
4829 | case R_NIOS2_GNU_VTINHERIT: | |
4830 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4831 | return FALSE; | |
4832 | break; | |
4833 | ||
4834 | /* This relocation describes which C++ vtable entries are actually | |
4835 | used. Record for later use during GC. */ | |
4836 | case R_NIOS2_GNU_VTENTRY: | |
4837 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
4838 | return FALSE; | |
4839 | break; | |
4840 | ||
4841 | case R_NIOS2_BFD_RELOC_32: | |
4842 | case R_NIOS2_CALL26: | |
78058a5e | 4843 | case R_NIOS2_CALL26_NOAT: |
36591ba1 SL |
4844 | case R_NIOS2_HIADJ16: |
4845 | case R_NIOS2_LO16: | |
4846 | ||
4847 | if (h != NULL) | |
4848 | { | |
4849 | /* If this reloc is in a read-only section, we might | |
4850 | need a copy reloc. We can't check reliably at this | |
4851 | stage whether the section is read-only, as input | |
4852 | sections have not yet been mapped to output sections. | |
4853 | Tentatively set the flag for now, and correct in | |
4854 | adjust_dynamic_symbol. */ | |
0e1862bb | 4855 | if (!bfd_link_pic (info)) |
36591ba1 SL |
4856 | h->non_got_ref = 1; |
4857 | ||
4858 | /* Make sure a plt entry is created for this symbol if it | |
4859 | turns out to be a function defined by a dynamic object. */ | |
4860 | h->plt.refcount++; | |
4861 | ||
78058a5e | 4862 | if (r_type == R_NIOS2_CALL26 || r_type == R_NIOS2_CALL26_NOAT) |
36591ba1 SL |
4863 | h->needs_plt = 1; |
4864 | } | |
4865 | ||
4866 | /* If we are creating a shared library, we need to copy the | |
4867 | reloc into the shared library. */ | |
0e1862bb | 4868 | if (bfd_link_pic (info) |
36591ba1 SL |
4869 | && (sec->flags & SEC_ALLOC) != 0 |
4870 | && (r_type == R_NIOS2_BFD_RELOC_32 | |
4871 | || (h != NULL && ! h->needs_plt | |
a496fbc8 | 4872 | && (! SYMBOLIC_BIND (info, h) || ! h->def_regular)))) |
36591ba1 | 4873 | { |
3bf083ed AM |
4874 | struct elf_dyn_relocs *p; |
4875 | struct elf_dyn_relocs **head; | |
36591ba1 SL |
4876 | |
4877 | /* When creating a shared object, we must copy these | |
4878 | reloc types into the output file. We create a reloc | |
4879 | section in dynobj and make room for this reloc. */ | |
4880 | if (sreloc == NULL) | |
4881 | { | |
4ef97a1b AM |
4882 | if (htab->root.dynobj == NULL) |
4883 | htab->root.dynobj = abfd; | |
4884 | ||
36591ba1 | 4885 | sreloc = _bfd_elf_make_dynamic_reloc_section |
4ef97a1b | 4886 | (sec, htab->root.dynobj, 2, abfd, TRUE); |
36591ba1 SL |
4887 | if (sreloc == NULL) |
4888 | return FALSE; | |
4889 | } | |
4890 | ||
4891 | /* If this is a global symbol, we count the number of | |
4892 | relocations we need for this symbol. */ | |
4893 | if (h != NULL) | |
190eb1dd | 4894 | head = &h->dyn_relocs; |
36591ba1 SL |
4895 | else |
4896 | { | |
4897 | /* Track dynamic relocs needed for local syms too. | |
4898 | We really need local syms available to do this | |
4899 | easily. Oh well. */ | |
4900 | ||
4901 | asection *s; | |
4902 | void *vpp; | |
4903 | Elf_Internal_Sym *isym; | |
4904 | ||
4905 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4906 | abfd, r_symndx); | |
4907 | if (isym == NULL) | |
4908 | return FALSE; | |
4909 | ||
4910 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4911 | if (s == NULL) | |
4912 | s = sec; | |
4913 | ||
4914 | vpp = &elf_section_data (s)->local_dynrel; | |
3bf083ed | 4915 | head = (struct elf_dyn_relocs **) vpp; |
36591ba1 SL |
4916 | } |
4917 | ||
4918 | p = *head; | |
4919 | if (p == NULL || p->sec != sec) | |
4920 | { | |
986f0783 | 4921 | size_t amt = sizeof *p; |
3bf083ed | 4922 | p = ((struct elf_dyn_relocs *) |
36591ba1 SL |
4923 | bfd_alloc (htab->root.dynobj, amt)); |
4924 | if (p == NULL) | |
4925 | return FALSE; | |
4926 | p->next = *head; | |
4927 | *head = p; | |
4928 | p->sec = sec; | |
4929 | p->count = 0; | |
4930 | p->pc_count = 0; | |
4931 | } | |
4932 | ||
4933 | p->count += 1; | |
4934 | ||
4935 | } | |
4936 | break; | |
4937 | } | |
4938 | } | |
4939 | ||
4940 | return TRUE; | |
4941 | } | |
4942 | ||
4943 | ||
4944 | /* Implement elf_backend_gc_mark_hook: | |
4945 | Return the section that should be marked against GC for a given | |
4946 | relocation. */ | |
4947 | static asection * | |
4948 | nios2_elf32_gc_mark_hook (asection *sec, | |
25153ba0 | 4949 | struct bfd_link_info *info, |
36591ba1 SL |
4950 | Elf_Internal_Rela *rel, |
4951 | struct elf_link_hash_entry *h, | |
4952 | Elf_Internal_Sym *sym) | |
4953 | { | |
4954 | if (h != NULL) | |
4955 | switch (ELF32_R_TYPE (rel->r_info)) | |
4956 | { | |
4957 | case R_NIOS2_GNU_VTINHERIT: | |
4958 | case R_NIOS2_GNU_VTENTRY: | |
4959 | return NULL; | |
4960 | } | |
4961 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
4962 | } | |
4963 | ||
36591ba1 SL |
4964 | /* Implement elf_backend_finish_dynamic_symbols: |
4965 | Finish up dynamic symbol handling. We set the contents of various | |
4966 | dynamic sections here. */ | |
4967 | static bfd_boolean | |
4968 | nios2_elf32_finish_dynamic_symbol (bfd *output_bfd, | |
4969 | struct bfd_link_info *info, | |
4970 | struct elf_link_hash_entry *h, | |
4971 | Elf_Internal_Sym *sym) | |
4972 | { | |
4973 | struct elf32_nios2_link_hash_table *htab; | |
4974 | struct elf32_nios2_link_hash_entry *eh | |
4975 | = (struct elf32_nios2_link_hash_entry *)h; | |
4976 | int use_plt; | |
4977 | ||
4978 | htab = elf32_nios2_hash_table (info); | |
4979 | ||
4980 | if (h->plt.offset != (bfd_vma) -1) | |
4981 | { | |
4982 | asection *splt; | |
4983 | asection *sgotplt; | |
4984 | asection *srela; | |
4985 | bfd_vma plt_index; | |
4986 | bfd_vma got_offset; | |
4987 | Elf_Internal_Rela rela; | |
4988 | bfd_byte *loc; | |
4989 | bfd_vma got_address; | |
4990 | ||
4991 | /* This symbol has an entry in the procedure linkage table. Set | |
4992 | it up. */ | |
4993 | BFD_ASSERT (h->dynindx != -1); | |
4994 | splt = htab->root.splt; | |
4995 | sgotplt = htab->root.sgotplt; | |
4996 | srela = htab->root.srelplt; | |
4997 | BFD_ASSERT (splt != NULL && sgotplt != NULL && srela != NULL); | |
4998 | ||
4999 | /* Emit the PLT entry. */ | |
0e1862bb | 5000 | if (bfd_link_pic (info)) |
36591ba1 SL |
5001 | { |
5002 | nios2_elf32_install_data (splt, nios2_so_plt_entry, h->plt.offset, | |
5003 | 3); | |
5004 | plt_index = (h->plt.offset - 24) / 12; | |
5005 | got_offset = (plt_index + 3) * 4; | |
5006 | nios2_elf32_install_imm16 (splt, h->plt.offset, | |
5007 | hiadj(plt_index * 4)); | |
5008 | nios2_elf32_install_imm16 (splt, h->plt.offset + 4, | |
5009 | (plt_index * 4) & 0xffff); | |
5010 | nios2_elf32_install_imm16 (splt, h->plt.offset + 8, | |
5011 | 0xfff4 - h->plt.offset); | |
5012 | got_address = (sgotplt->output_section->vma + sgotplt->output_offset | |
5013 | + got_offset); | |
5014 | ||
5015 | /* Fill in the entry in the global offset table. There are no | |
5016 | res_n slots for a shared object PLT, instead the .got.plt entries | |
5017 | point to the PLT entries. */ | |
5018 | bfd_put_32 (output_bfd, | |
5019 | splt->output_section->vma + splt->output_offset | |
5020 | + h->plt.offset, sgotplt->contents + got_offset); | |
5021 | } | |
5022 | else | |
5023 | { | |
5024 | plt_index = (h->plt.offset - 28 - htab->res_n_size) / 12; | |
5025 | got_offset = (plt_index + 3) * 4; | |
5026 | ||
5027 | nios2_elf32_install_data (splt, nios2_plt_entry, h->plt.offset, 3); | |
5028 | got_address = (sgotplt->output_section->vma + sgotplt->output_offset | |
5029 | + got_offset); | |
5030 | nios2_elf32_install_imm16 (splt, h->plt.offset, hiadj(got_address)); | |
5031 | nios2_elf32_install_imm16 (splt, h->plt.offset + 4, | |
5032 | got_address & 0xffff); | |
5033 | ||
5034 | /* Fill in the entry in the global offset table. */ | |
5035 | bfd_put_32 (output_bfd, | |
5036 | splt->output_section->vma + splt->output_offset | |
5037 | + plt_index * 4, sgotplt->contents + got_offset); | |
5038 | } | |
5039 | ||
5040 | /* Fill in the entry in the .rela.plt section. */ | |
5041 | rela.r_offset = got_address; | |
5042 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NIOS2_JUMP_SLOT); | |
5043 | rela.r_addend = 0; | |
5044 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); | |
5045 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5046 | ||
5047 | if (!h->def_regular) | |
5048 | { | |
5049 | /* Mark the symbol as undefined, rather than as defined in | |
5050 | the .plt section. Leave the value alone. */ | |
5051 | sym->st_shndx = SHN_UNDEF; | |
5052 | /* If the symbol is weak, we do need to clear the value. | |
5053 | Otherwise, the PLT entry would provide a definition for | |
5054 | the symbol even if the symbol wasn't defined anywhere, | |
5055 | and so the symbol would never be NULL. */ | |
5056 | if (!h->ref_regular_nonweak) | |
5057 | sym->st_value = 0; | |
5058 | } | |
5059 | } | |
5060 | ||
1c2de463 | 5061 | use_plt = (eh->got_types_used == CALL_USED |
36591ba1 SL |
5062 | && h->plt.offset != (bfd_vma) -1); |
5063 | ||
5064 | if (!use_plt && h->got.offset != (bfd_vma) -1 | |
5065 | && (elf32_nios2_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
5066 | && (elf32_nios2_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
5067 | { | |
5068 | asection *sgot; | |
5069 | asection *srela; | |
5070 | Elf_Internal_Rela rela; | |
5071 | bfd_byte *loc; | |
5072 | bfd_vma offset; | |
5073 | ||
5074 | /* This symbol has an entry in the global offset table. Set it | |
5075 | up. */ | |
5076 | sgot = htab->root.sgot; | |
5077 | srela = htab->root.srelgot; | |
5078 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
5079 | ||
5080 | offset = (h->got.offset & ~(bfd_vma) 1); | |
5081 | rela.r_offset = (sgot->output_section->vma | |
5082 | + sgot->output_offset + offset); | |
5083 | ||
5084 | /* If this is a -Bsymbolic link, and the symbol is defined | |
5085 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
5086 | the symbol was forced to be local because of a version file. | |
5087 | The entry in the global offset table will already have been | |
5088 | initialized in the relocate_section function. */ | |
5089 | ||
0e1862bb | 5090 | if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
36591ba1 SL |
5091 | { |
5092 | rela.r_info = ELF32_R_INFO (0, R_NIOS2_RELATIVE); | |
5093 | rela.r_addend = bfd_get_signed_32 (output_bfd, | |
5094 | (sgot->contents + offset)); | |
5095 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); | |
5096 | } | |
5097 | else | |
5098 | { | |
5099 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
5100 | sgot->contents + offset); | |
5101 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NIOS2_GLOB_DAT); | |
5102 | rela.r_addend = 0; | |
5103 | } | |
5104 | ||
5105 | loc = srela->contents; | |
5106 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
5107 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5108 | } | |
5109 | ||
5110 | if (use_plt && h->got.offset != (bfd_vma) -1) | |
5111 | { | |
5112 | bfd_vma offset = (h->got.offset & ~(bfd_vma) 1); | |
5113 | asection *sgot = htab->root.sgot; | |
5114 | asection *splt = htab->root.splt; | |
5115 | bfd_put_32 (output_bfd, (splt->output_section->vma + splt->output_offset | |
5116 | + h->plt.offset), | |
5117 | sgot->contents + offset); | |
5118 | } | |
5119 | ||
5120 | if (h->needs_copy) | |
5121 | { | |
5122 | asection *s; | |
5123 | Elf_Internal_Rela rela; | |
5124 | bfd_byte *loc; | |
5125 | ||
5126 | /* This symbol needs a copy reloc. Set it up. */ | |
5127 | BFD_ASSERT (h->dynindx != -1 | |
5128 | && (h->root.type == bfd_link_hash_defined | |
5129 | || h->root.type == bfd_link_hash_defweak)); | |
5130 | ||
36591ba1 SL |
5131 | rela.r_offset = (h->root.u.def.value |
5132 | + h->root.u.def.section->output_section->vma | |
5133 | + h->root.u.def.section->output_offset); | |
5134 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NIOS2_COPY); | |
5135 | rela.r_addend = 0; | |
afbf7e8e | 5136 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
5137 | s = htab->root.sreldynrelro; |
5138 | else | |
5139 | s = htab->root.srelbss; | |
5140 | BFD_ASSERT (s != NULL); | |
36591ba1 SL |
5141 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
5142 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5143 | } | |
5144 | ||
82e91538 | 5145 | /* Mark _DYNAMIC, _GLOBAL_OFFSET_TABLE_, and _gp_got as absolute. */ |
36591ba1 | 5146 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
4ef97a1b AM |
5147 | || h == htab->root.hgot |
5148 | || h == htab->h_gp_got) | |
36591ba1 SL |
5149 | sym->st_shndx = SHN_ABS; |
5150 | ||
5151 | return TRUE; | |
5152 | } | |
5153 | ||
5154 | /* Implement elf_backend_finish_dynamic_sections. */ | |
5155 | static bfd_boolean | |
5156 | nios2_elf32_finish_dynamic_sections (bfd *output_bfd, | |
5157 | struct bfd_link_info *info) | |
5158 | { | |
36591ba1 SL |
5159 | asection *sgotplt; |
5160 | asection *sdyn; | |
5161 | struct elf32_nios2_link_hash_table *htab; | |
5162 | ||
5163 | htab = elf32_nios2_hash_table (info); | |
36591ba1 | 5164 | sgotplt = htab->root.sgotplt; |
4ef97a1b | 5165 | sdyn = NULL; |
36591ba1 | 5166 | |
4ef97a1b | 5167 | if (htab->root.dynamic_sections_created) |
36591ba1 SL |
5168 | { |
5169 | asection *splt; | |
5170 | Elf32_External_Dyn *dyncon, *dynconend; | |
5171 | ||
5172 | splt = htab->root.splt; | |
4ef97a1b AM |
5173 | sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic"); |
5174 | BFD_ASSERT (splt != NULL && sdyn != NULL && sgotplt != NULL); | |
36591ba1 SL |
5175 | |
5176 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
5177 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
5178 | for (; dyncon < dynconend; dyncon++) | |
5179 | { | |
5180 | Elf_Internal_Dyn dyn; | |
5181 | asection *s; | |
5182 | ||
4ef97a1b | 5183 | bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn); |
36591ba1 SL |
5184 | |
5185 | switch (dyn.d_tag) | |
5186 | { | |
5187 | default: | |
5188 | break; | |
5189 | ||
5190 | case DT_PLTGOT: | |
4ade44b7 AM |
5191 | s = htab->root.sgotplt; |
5192 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
36591ba1 SL |
5193 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5194 | break; | |
5195 | ||
5196 | case DT_JMPREL: | |
5197 | s = htab->root.srelplt; | |
4ade44b7 | 5198 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
36591ba1 SL |
5199 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5200 | break; | |
5201 | ||
5202 | case DT_PLTRELSZ: | |
5203 | s = htab->root.srelplt; | |
36591ba1 SL |
5204 | dyn.d_un.d_val = s->size; |
5205 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5206 | break; | |
5207 | ||
36591ba1 | 5208 | case DT_NIOS2_GP: |
4ade44b7 AM |
5209 | s = htab->root.sgotplt; |
5210 | dyn.d_un.d_ptr | |
5211 | = s->output_section->vma + s->output_offset + 0x7ff0; | |
36591ba1 SL |
5212 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5213 | break; | |
5214 | } | |
5215 | } | |
5216 | ||
5217 | /* Fill in the first entry in the procedure linkage table. */ | |
5218 | if (splt->size > 0) | |
5219 | { | |
5220 | bfd_vma got_address = (sgotplt->output_section->vma | |
5221 | + sgotplt->output_offset); | |
0e1862bb | 5222 | if (bfd_link_pic (info)) |
36591ba1 | 5223 | { |
33d4099f SL |
5224 | bfd_vma got_pcrel = got_address - (splt->output_section->vma |
5225 | + splt->output_offset); | |
5226 | /* Both GOT and PLT must be aligned to a 16-byte boundary | |
5227 | for the two loads to share the %hiadj part. The 4-byte | |
5228 | offset for nextpc is accounted for in the %lo offsets | |
5229 | on the loads. */ | |
5230 | BFD_ASSERT ((got_pcrel & 0xf) == 0); | |
36591ba1 | 5231 | nios2_elf32_install_data (splt, nios2_so_plt0_entry, 0, 6); |
33d4099f SL |
5232 | nios2_elf32_install_imm16 (splt, 4, hiadj (got_pcrel)); |
5233 | nios2_elf32_install_imm16 (splt, 12, got_pcrel & 0xffff); | |
5234 | nios2_elf32_install_imm16 (splt, 16, (got_pcrel + 4) & 0xffff); | |
36591ba1 SL |
5235 | } |
5236 | else | |
5237 | { | |
5238 | /* Divide by 4 here, not 3 because we already corrected for the | |
5239 | res_N branches. */ | |
5240 | bfd_vma res_size = (splt->size - 28) / 4; | |
5241 | bfd_vma res_start = (splt->output_section->vma | |
5242 | + splt->output_offset); | |
5243 | bfd_vma res_offset; | |
5244 | ||
5245 | for (res_offset = 0; res_offset < res_size; res_offset += 4) | |
5246 | bfd_put_32 (output_bfd, | |
5247 | 6 | ((res_size - (res_offset + 4)) << 6), | |
5248 | splt->contents + res_offset); | |
5249 | ||
33d4099f SL |
5250 | /* The GOT must be aligned to a 16-byte boundary for the |
5251 | two loads to share the same %hiadj part. */ | |
5252 | BFD_ASSERT ((got_address & 0xf) == 0); | |
5253 | ||
36591ba1 SL |
5254 | nios2_elf32_install_data (splt, nios2_plt0_entry, res_size, 7); |
5255 | nios2_elf32_install_imm16 (splt, res_size, hiadj (res_start)); | |
5256 | nios2_elf32_install_imm16 (splt, res_size + 4, | |
5257 | res_start & 0xffff); | |
5258 | nios2_elf32_install_imm16 (splt, res_size + 12, | |
5259 | hiadj (got_address)); | |
5260 | nios2_elf32_install_imm16 (splt, res_size + 16, | |
33d4099f | 5261 | (got_address + 4) & 0xffff); |
36591ba1 | 5262 | nios2_elf32_install_imm16 (splt, res_size + 20, |
33d4099f | 5263 | (got_address + 8) & 0xffff); |
36591ba1 SL |
5264 | } |
5265 | } | |
5266 | } | |
4ef97a1b | 5267 | |
36591ba1 | 5268 | /* Fill in the first three entries in the global offset table. */ |
4ef97a1b | 5269 | if (sgotplt != NULL && sgotplt->size > 0) |
36591ba1 SL |
5270 | { |
5271 | if (sdyn == NULL) | |
5272 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents); | |
5273 | else | |
5274 | bfd_put_32 (output_bfd, | |
5275 | sdyn->output_section->vma + sdyn->output_offset, | |
5276 | sgotplt->contents); | |
5277 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4); | |
5278 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8); | |
36591ba1 | 5279 | |
4ef97a1b AM |
5280 | if (sgotplt->output_section != bfd_abs_section_ptr) |
5281 | elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4; | |
5282 | } | |
36591ba1 SL |
5283 | |
5284 | return TRUE; | |
5285 | } | |
5286 | ||
5287 | /* Implement elf_backend_adjust_dynamic_symbol: | |
5288 | Adjust a symbol defined by a dynamic object and referenced by a | |
5289 | regular object. The current definition is in some section of the | |
5290 | dynamic object, but we're not including those sections. We have to | |
5291 | change the definition to something the rest of the link can | |
5292 | understand. */ | |
5293 | static bfd_boolean | |
5294 | nios2_elf32_adjust_dynamic_symbol (struct bfd_link_info *info, | |
5295 | struct elf_link_hash_entry *h) | |
5296 | { | |
5297 | struct elf32_nios2_link_hash_table *htab; | |
5298 | bfd *dynobj; | |
5474d94f | 5299 | asection *s, *srel; |
36591ba1 SL |
5300 | unsigned align2; |
5301 | ||
5302 | htab = elf32_nios2_hash_table (info); | |
4ef97a1b | 5303 | dynobj = htab->root.dynobj; |
36591ba1 SL |
5304 | |
5305 | /* Make sure we know what is going on here. */ | |
5306 | BFD_ASSERT (dynobj != NULL | |
5307 | && (h->needs_plt | |
60d67dc8 | 5308 | || h->is_weakalias |
36591ba1 SL |
5309 | || (h->def_dynamic |
5310 | && h->ref_regular | |
5311 | && !h->def_regular))); | |
5312 | ||
5313 | /* If this is a function, put it in the procedure linkage table. We | |
5314 | will fill in the contents of the procedure linkage table later, | |
5315 | when we know the address of the .got section. */ | |
5316 | if (h->type == STT_FUNC || h->needs_plt) | |
5317 | { | |
5318 | if (h->plt.refcount <= 0 | |
5319 | || SYMBOL_CALLS_LOCAL (info, h) | |
5320 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5321 | && h->root.type == bfd_link_hash_undefweak)) | |
5322 | { | |
5323 | /* This case can occur if we saw a PLT reloc in an input | |
5324 | file, but the symbol was never referred to by a dynamic | |
5325 | object, or if all references were garbage collected. In | |
5326 | such a case, we don't actually need to build a procedure | |
5327 | linkage table, and we can just do a PCREL reloc instead. */ | |
5328 | h->plt.offset = (bfd_vma) -1; | |
5329 | h->needs_plt = 0; | |
5330 | } | |
5331 | ||
5332 | return TRUE; | |
5333 | } | |
5334 | ||
5335 | /* Reinitialize the plt offset now that it is not used as a reference | |
5336 | count any more. */ | |
5337 | h->plt.offset = (bfd_vma) -1; | |
5338 | ||
5339 | /* If this is a weak symbol, and there is a real definition, the | |
5340 | processor independent code will have arranged for us to see the | |
5341 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 5342 | if (h->is_weakalias) |
36591ba1 | 5343 | { |
60d67dc8 AM |
5344 | struct elf_link_hash_entry *def = weakdef (h); |
5345 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
5346 | h->root.u.def.section = def->root.u.def.section; | |
5347 | h->root.u.def.value = def->root.u.def.value; | |
36591ba1 SL |
5348 | return TRUE; |
5349 | } | |
5350 | ||
5351 | /* If there are no non-GOT references, we do not need a copy | |
5352 | relocation. */ | |
5353 | if (!h->non_got_ref) | |
5354 | return TRUE; | |
5355 | ||
5356 | /* This is a reference to a symbol defined by a dynamic object which | |
5357 | is not a function. | |
5358 | If we are creating a shared library, we must presume that the | |
5359 | only references to the symbol are via the global offset table. | |
5360 | For such cases we need not do anything here; the relocations will | |
5361 | be handled correctly by relocate_section. */ | |
0e1862bb | 5362 | if (bfd_link_pic (info)) |
36591ba1 SL |
5363 | return TRUE; |
5364 | ||
5365 | if (h->size == 0) | |
5366 | { | |
4eca0228 AM |
5367 | _bfd_error_handler (_("dynamic variable `%s' is zero size"), |
5368 | h->root.root.string); | |
36591ba1 SL |
5369 | return TRUE; |
5370 | } | |
5371 | ||
5372 | /* We must allocate the symbol in our .dynbss section, which will | |
5373 | become part of the .bss section of the executable. There will be | |
5374 | an entry for this symbol in the .dynsym section. The dynamic | |
5375 | object will contain position independent code, so all references | |
5376 | from the dynamic object to this symbol will go through the global | |
5377 | offset table. The dynamic linker will use the .dynsym entry to | |
5378 | determine the address it must put in the global offset table, so | |
5379 | both the dynamic object and the regular object will refer to the | |
5380 | same memory location for the variable. */ | |
36591ba1 SL |
5381 | /* We must generate a R_NIOS2_COPY reloc to tell the dynamic linker to |
5382 | copy the initial value out of the dynamic object and into the | |
5383 | runtime process image. We need to remember the offset into the | |
5384 | .rela.bss section we are going to use. */ | |
5474d94f | 5385 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
36591ba1 | 5386 | { |
5474d94f AM |
5387 | s = htab->root.sdynrelro; |
5388 | srel = htab->root.sreldynrelro; | |
5389 | } | |
5390 | else | |
5391 | { | |
5392 | s = htab->root.sdynbss; | |
9d19e4fd | 5393 | srel = htab->root.srelbss; |
5474d94f AM |
5394 | } |
5395 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5396 | { | |
36591ba1 SL |
5397 | srel->size += sizeof (Elf32_External_Rela); |
5398 | h->needs_copy = 1; | |
5399 | } | |
5400 | ||
5401 | align2 = bfd_log2 (h->size); | |
5402 | if (align2 > h->root.u.def.section->alignment_power) | |
5403 | align2 = h->root.u.def.section->alignment_power; | |
5404 | ||
5405 | /* Align dynbss. */ | |
5406 | s->size = BFD_ALIGN (s->size, (bfd_size_type)1 << align2); | |
fd361982 AM |
5407 | if (align2 > bfd_section_alignment (s) |
5408 | && !bfd_set_section_alignment (s, align2)) | |
36591ba1 SL |
5409 | return FALSE; |
5410 | ||
5411 | /* Define the symbol as being at this point in the section. */ | |
5412 | h->root.u.def.section = s; | |
5413 | h->root.u.def.value = s->size; | |
5414 | ||
5415 | /* Increment the section size to make room for the symbol. */ | |
5416 | s->size += h->size; | |
5417 | ||
5418 | return TRUE; | |
5419 | } | |
5420 | ||
5421 | /* Worker function for nios2_elf32_size_dynamic_sections. */ | |
5422 | static bfd_boolean | |
5423 | adjust_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
5424 | { | |
5425 | struct bfd_link_info *info; | |
5426 | struct elf32_nios2_link_hash_table *htab; | |
5427 | ||
5428 | if (h->root.type == bfd_link_hash_indirect) | |
5429 | return TRUE; | |
5430 | ||
5431 | if (h->root.type == bfd_link_hash_warning) | |
5432 | /* When warning symbols are created, they **replace** the "real" | |
5433 | entry in the hash table, thus we never get to see the real | |
5434 | symbol in a hash traversal. So look at it now. */ | |
5435 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5436 | ||
5437 | info = (struct bfd_link_info *) inf; | |
5438 | htab = elf32_nios2_hash_table (info); | |
5439 | ||
5440 | if (h->plt.offset != (bfd_vma)-1) | |
5441 | h->plt.offset += htab->res_n_size; | |
5442 | if (htab->root.splt == h->root.u.def.section) | |
5443 | h->root.u.def.value += htab->res_n_size; | |
5444 | ||
5445 | return TRUE; | |
5446 | } | |
5447 | ||
5448 | /* Another worker function for nios2_elf32_size_dynamic_sections. | |
5449 | Allocate space in .plt, .got and associated reloc sections for | |
5450 | dynamic relocs. */ | |
5451 | static bfd_boolean | |
5452 | allocate_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
5453 | { | |
5454 | struct bfd_link_info *info; | |
5455 | struct elf32_nios2_link_hash_table *htab; | |
5456 | struct elf32_nios2_link_hash_entry *eh; | |
3bf083ed | 5457 | struct elf_dyn_relocs *p; |
36591ba1 SL |
5458 | int use_plt; |
5459 | ||
5460 | if (h->root.type == bfd_link_hash_indirect) | |
5461 | return TRUE; | |
5462 | ||
5463 | if (h->root.type == bfd_link_hash_warning) | |
5464 | /* When warning symbols are created, they **replace** the "real" | |
5465 | entry in the hash table, thus we never get to see the real | |
5466 | symbol in a hash traversal. So look at it now. */ | |
5467 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5468 | ||
5469 | info = (struct bfd_link_info *) inf; | |
5470 | htab = elf32_nios2_hash_table (info); | |
5471 | ||
5472 | if (htab->root.dynamic_sections_created | |
5473 | && h->plt.refcount > 0) | |
5474 | { | |
5475 | /* Make sure this symbol is output as a dynamic symbol. | |
5476 | Undefined weak syms won't yet be marked as dynamic. */ | |
5477 | if (h->dynindx == -1 | |
5478 | && !h->forced_local | |
5479 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
5480 | return FALSE; | |
5481 | ||
0e1862bb | 5482 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
36591ba1 SL |
5483 | { |
5484 | asection *s = htab->root.splt; | |
5485 | ||
5486 | /* Allocate room for the header. */ | |
5487 | if (s->size == 0) | |
5488 | { | |
0e1862bb | 5489 | if (bfd_link_pic (info)) |
36591ba1 SL |
5490 | s->size = 24; |
5491 | else | |
5492 | s->size = 28; | |
5493 | } | |
5494 | ||
5495 | h->plt.offset = s->size; | |
5496 | ||
5497 | /* If this symbol is not defined in a regular file, and we are | |
5498 | not generating a shared library, then set the symbol to this | |
5499 | location in the .plt. This is required to make function | |
5500 | pointers compare as equal between the normal executable and | |
5501 | the shared library. */ | |
0e1862bb | 5502 | if (! bfd_link_pic (info) |
36591ba1 SL |
5503 | && !h->def_regular) |
5504 | { | |
5505 | h->root.u.def.section = s; | |
5506 | h->root.u.def.value = h->plt.offset; | |
5507 | } | |
5508 | ||
5509 | /* Make room for this entry. */ | |
5510 | s->size += 12; | |
5511 | ||
5512 | /* We also need to make an entry in the .rela.plt section. */ | |
5513 | htab->root.srelplt->size += sizeof (Elf32_External_Rela); | |
5514 | ||
5515 | /* And the .got.plt section. */ | |
5516 | htab->root.sgotplt->size += 4; | |
5517 | } | |
5518 | else | |
5519 | { | |
5520 | h->plt.offset = (bfd_vma) -1; | |
5521 | h->needs_plt = 0; | |
5522 | } | |
5523 | } | |
5524 | else | |
5525 | { | |
5526 | h->plt.offset = (bfd_vma) -1; | |
5527 | h->needs_plt = 0; | |
5528 | } | |
5529 | ||
5530 | eh = (struct elf32_nios2_link_hash_entry *) h; | |
1c2de463 | 5531 | use_plt = (eh->got_types_used == CALL_USED |
36591ba1 SL |
5532 | && h->plt.offset != (bfd_vma) -1); |
5533 | ||
5534 | if (h->got.refcount > 0) | |
5535 | { | |
5536 | asection *s; | |
5537 | bfd_boolean dyn; | |
5538 | int tls_type = eh->tls_type; | |
5539 | int indx; | |
5540 | ||
5541 | /* Make sure this symbol is output as a dynamic symbol. | |
5542 | Undefined weak syms won't yet be marked as dynamic. */ | |
5543 | if (h->dynindx == -1 | |
5544 | && !h->forced_local | |
5545 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
5546 | return FALSE; | |
5547 | ||
5548 | s = htab->root.sgot; | |
5549 | h->got.offset = s->size; | |
5550 | ||
5551 | if (tls_type == GOT_UNKNOWN) | |
5552 | abort (); | |
5553 | ||
5554 | if (tls_type == GOT_NORMAL) | |
5555 | /* Non-TLS symbols need one GOT slot. */ | |
5556 | s->size += 4; | |
5557 | else | |
5558 | { | |
5559 | if (tls_type & GOT_TLS_GD) | |
5560 | /* R_NIOS2_TLS_GD16 needs 2 consecutive GOT slots. */ | |
5561 | s->size += 8; | |
5562 | if (tls_type & GOT_TLS_IE) | |
5563 | /* R_NIOS2_TLS_IE16 needs one GOT slot. */ | |
5564 | s->size += 4; | |
5565 | } | |
5566 | ||
5567 | dyn = htab->root.dynamic_sections_created; | |
5568 | ||
5569 | indx = 0; | |
0e1862bb L |
5570 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
5571 | && (!bfd_link_pic (info) | |
36591ba1 SL |
5572 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
5573 | indx = h->dynindx; | |
5574 | ||
5575 | if (tls_type != GOT_NORMAL | |
0e1862bb | 5576 | && (bfd_link_pic (info) || indx != 0) |
36591ba1 SL |
5577 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
5578 | || h->root.type != bfd_link_hash_undefweak)) | |
5579 | { | |
5580 | if (tls_type & GOT_TLS_IE) | |
5581 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); | |
5582 | ||
5583 | if (tls_type & GOT_TLS_GD) | |
5584 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); | |
5585 | ||
5586 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
5587 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); | |
5588 | } | |
5589 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5590 | || h->root.type != bfd_link_hash_undefweak) | |
5591 | && !use_plt | |
0e1862bb | 5592 | && (bfd_link_pic (info) |
36591ba1 SL |
5593 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
5594 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); | |
5595 | } | |
5596 | else | |
5597 | h->got.offset = (bfd_vma) -1; | |
5598 | ||
190eb1dd | 5599 | if (h->dyn_relocs == NULL) |
36591ba1 SL |
5600 | return TRUE; |
5601 | ||
5602 | /* In the shared -Bsymbolic case, discard space allocated for | |
5603 | dynamic pc-relative relocs against symbols which turn out to be | |
5604 | defined in regular objects. For the normal shared case, discard | |
5605 | space for pc-relative relocs that have become local due to symbol | |
5606 | visibility changes. */ | |
5607 | ||
0e1862bb | 5608 | if (bfd_link_pic (info)) |
36591ba1 SL |
5609 | { |
5610 | if (h->def_regular | |
a496fbc8 | 5611 | && (h->forced_local || SYMBOLIC_BIND (info, h))) |
36591ba1 | 5612 | { |
3bf083ed | 5613 | struct elf_dyn_relocs **pp; |
36591ba1 | 5614 | |
190eb1dd | 5615 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
36591ba1 SL |
5616 | { |
5617 | p->count -= p->pc_count; | |
5618 | p->pc_count = 0; | |
5619 | if (p->count == 0) | |
5620 | *pp = p->next; | |
5621 | else | |
5622 | pp = &p->next; | |
5623 | } | |
5624 | } | |
5625 | ||
5626 | /* Also discard relocs on undefined weak syms with non-default | |
5627 | visibility. */ | |
190eb1dd | 5628 | if (h->dyn_relocs != NULL |
36591ba1 SL |
5629 | && h->root.type == bfd_link_hash_undefweak) |
5630 | { | |
31a53da5 L |
5631 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
5632 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
190eb1dd | 5633 | h->dyn_relocs = NULL; |
36591ba1 SL |
5634 | |
5635 | /* Make sure undefined weak symbols are output as a dynamic | |
5636 | symbol in PIEs. */ | |
5637 | else if (h->dynindx == -1 | |
5638 | && !h->forced_local | |
5639 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
5640 | return FALSE; | |
5641 | } | |
5642 | } | |
5643 | else | |
5644 | { | |
5645 | /* For the non-shared case, discard space for relocs against | |
5646 | symbols which turn out to need copy relocs or are not | |
5647 | dynamic. */ | |
5648 | ||
5649 | if (!h->non_got_ref | |
5650 | && ((h->def_dynamic && !h->def_regular) | |
5651 | || (htab->root.dynamic_sections_created | |
5652 | && (h->root.type == bfd_link_hash_undefweak | |
5653 | || h->root.type == bfd_link_hash_undefined)))) | |
5654 | { | |
5655 | /* Make sure this symbol is output as a dynamic symbol. | |
5656 | Undefined weak syms won't yet be marked as dynamic. */ | |
5657 | if (h->dynindx == -1 | |
5658 | && !h->forced_local | |
5659 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
5660 | return FALSE; | |
5661 | ||
5662 | /* If that succeeded, we know we'll be keeping all the | |
5663 | relocs. */ | |
5664 | if (h->dynindx != -1) | |
5665 | goto keep; | |
5666 | } | |
5667 | ||
190eb1dd | 5668 | h->dyn_relocs = NULL; |
36591ba1 SL |
5669 | |
5670 | keep: ; | |
5671 | } | |
5672 | ||
5673 | /* Finally, allocate space. */ | |
190eb1dd | 5674 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
36591ba1 SL |
5675 | { |
5676 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
5677 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
5678 | } | |
5679 | ||
5680 | return TRUE; | |
5681 | } | |
5682 | ||
5683 | /* Implement elf_backend_size_dynamic_sections: | |
5684 | Set the sizes of the dynamic sections. */ | |
5685 | static bfd_boolean | |
5686 | nios2_elf32_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5687 | struct bfd_link_info *info) | |
5688 | { | |
5689 | bfd *dynobj; | |
5690 | asection *s; | |
36591ba1 SL |
5691 | bfd_boolean relocs; |
5692 | bfd *ibfd; | |
5693 | struct elf32_nios2_link_hash_table *htab; | |
5694 | ||
5695 | htab = elf32_nios2_hash_table (info); | |
4ef97a1b | 5696 | dynobj = htab->root.dynobj; |
36591ba1 SL |
5697 | BFD_ASSERT (dynobj != NULL); |
5698 | ||
5699 | htab->res_n_size = 0; | |
4ef97a1b | 5700 | if (htab->root.dynamic_sections_created) |
36591ba1 SL |
5701 | { |
5702 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 5703 | if (bfd_link_executable (info) && !info->nointerp) |
36591ba1 SL |
5704 | { |
5705 | s = bfd_get_linker_section (dynobj, ".interp"); | |
5706 | BFD_ASSERT (s != NULL); | |
5707 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5708 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5709 | } | |
5710 | } | |
5711 | else | |
5712 | { | |
5713 | /* We may have created entries in the .rela.got section. | |
5714 | However, if we are not creating the dynamic sections, we will | |
5715 | not actually use these entries. Reset the size of .rela.got, | |
5716 | which will cause it to get stripped from the output file | |
5717 | below. */ | |
5718 | s = htab->root.srelgot; | |
5719 | if (s != NULL) | |
5720 | s->size = 0; | |
5721 | } | |
5722 | ||
5723 | /* Set up .got offsets for local syms, and space for local dynamic | |
5724 | relocs. */ | |
c72f2fb2 | 5725 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
36591ba1 SL |
5726 | { |
5727 | bfd_signed_vma *local_got; | |
5728 | bfd_signed_vma *end_local_got; | |
5729 | char *local_tls_type; | |
5730 | bfd_size_type locsymcount; | |
5731 | Elf_Internal_Shdr *symtab_hdr; | |
5732 | asection *srel; | |
5733 | ||
5734 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
5735 | continue; | |
5736 | ||
5737 | for (s = ibfd->sections; s != NULL; s = s->next) | |
5738 | { | |
3bf083ed | 5739 | struct elf_dyn_relocs *p; |
36591ba1 SL |
5740 | |
5741 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) | |
5742 | { | |
5743 | if (!bfd_is_abs_section (p->sec) | |
5744 | && bfd_is_abs_section (p->sec->output_section)) | |
5745 | { | |
5746 | /* Input section has been discarded, either because | |
5747 | it is a copy of a linkonce section or due to | |
5748 | linker script /DISCARD/, so we'll be discarding | |
5749 | the relocs too. */ | |
5750 | } | |
5751 | else if (p->count != 0) | |
5752 | { | |
5753 | srel = elf_section_data (p->sec)->sreloc; | |
5754 | srel->size += p->count * sizeof (Elf32_External_Rela); | |
36591ba1 SL |
5755 | } |
5756 | } | |
5757 | } | |
5758 | ||
5759 | local_got = elf_local_got_refcounts (ibfd); | |
5760 | if (!local_got) | |
5761 | continue; | |
5762 | ||
5763 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5764 | locsymcount = symtab_hdr->sh_info; | |
5765 | end_local_got = local_got + locsymcount; | |
5766 | local_tls_type = elf32_nios2_local_got_tls_type (ibfd); | |
5767 | s = htab->root.sgot; | |
5768 | srel = htab->root.srelgot; | |
5769 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
5770 | { | |
5771 | if (*local_got > 0) | |
5772 | { | |
5773 | *local_got = s->size; | |
5774 | if (*local_tls_type & GOT_TLS_GD) | |
5775 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
5776 | s->size += 8; | |
5777 | if (*local_tls_type & GOT_TLS_IE) | |
5778 | s->size += 4; | |
5779 | if (*local_tls_type == GOT_NORMAL) | |
5780 | s->size += 4; | |
5781 | ||
0e1862bb | 5782 | if (bfd_link_pic (info) || *local_tls_type == GOT_TLS_GD) |
36591ba1 SL |
5783 | srel->size += sizeof (Elf32_External_Rela); |
5784 | } | |
5785 | else | |
5786 | *local_got = (bfd_vma) -1; | |
5787 | } | |
5788 | } | |
5789 | ||
5790 | if (htab->tls_ldm_got.refcount > 0) | |
5791 | { | |
5792 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
5793 | for R_NIOS2_TLS_LDM16 relocations. */ | |
5794 | htab->tls_ldm_got.offset = htab->root.sgot->size; | |
5795 | htab->root.sgot->size += 8; | |
0e1862bb | 5796 | if (bfd_link_pic (info)) |
36591ba1 SL |
5797 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
5798 | } | |
5799 | else | |
5800 | htab->tls_ldm_got.offset = -1; | |
5801 | ||
5802 | /* Allocate global sym .plt and .got entries, and space for global | |
5803 | sym dynamic relocs. */ | |
5804 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); | |
5805 | ||
4ef97a1b | 5806 | if (htab->root.dynamic_sections_created) |
82e91538 SL |
5807 | { |
5808 | /* If the .got section is more than 0x8000 bytes, we add | |
5809 | 0x8000 to the value of _gp_got, so that 16-bit relocations | |
5810 | have a greater chance of working. */ | |
5811 | if (htab->root.sgot->size >= 0x8000 | |
4ef97a1b AM |
5812 | && htab->h_gp_got->root.u.def.value == 0) |
5813 | htab->h_gp_got->root.u.def.value = 0x8000; | |
82e91538 SL |
5814 | } |
5815 | ||
36591ba1 SL |
5816 | /* The check_relocs and adjust_dynamic_symbol entry points have |
5817 | determined the sizes of the various dynamic sections. Allocate | |
5818 | memory for them. */ | |
36591ba1 SL |
5819 | relocs = FALSE; |
5820 | for (s = dynobj->sections; s != NULL; s = s->next) | |
5821 | { | |
5822 | const char *name; | |
5823 | ||
5824 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
5825 | continue; | |
5826 | ||
5827 | /* It's OK to base decisions on the section name, because none | |
5828 | of the dynobj section names depend upon the input files. */ | |
fd361982 | 5829 | name = bfd_section_name (s); |
36591ba1 | 5830 | |
4ef97a1b | 5831 | if (CONST_STRNEQ (name, ".rela")) |
36591ba1 SL |
5832 | { |
5833 | if (s->size != 0) | |
5834 | { | |
4ef97a1b AM |
5835 | if (s != htab->root.srelplt) |
5836 | relocs = TRUE; | |
36591ba1 SL |
5837 | |
5838 | /* We use the reloc_count field as a counter if we need | |
5839 | to copy relocs into the output file. */ | |
5840 | s->reloc_count = 0; | |
5841 | } | |
5842 | } | |
4ef97a1b | 5843 | else if (s == htab->root.splt) |
5474d94f | 5844 | { |
4ef97a1b AM |
5845 | /* Correct for the number of res_N branches. */ |
5846 | if (s->size != 0 && !bfd_link_pic (info)) | |
5847 | { | |
5848 | htab->res_n_size = (s->size - 28) / 3; | |
5849 | s->size += htab->res_n_size; | |
5850 | } | |
5474d94f | 5851 | } |
4ef97a1b AM |
5852 | else if (s != htab->sbss |
5853 | && s != htab->root.sgot | |
5854 | && s != htab->root.sgotplt | |
5855 | && s != htab->root.sdynbss | |
5474d94f | 5856 | && s != htab->root.sdynrelro) |
36591ba1 SL |
5857 | /* It's not one of our sections, so don't allocate space. */ |
5858 | continue; | |
5859 | ||
5860 | if (s->size == 0) | |
5861 | { | |
36591ba1 SL |
5862 | s->flags |= SEC_EXCLUDE; |
5863 | continue; | |
5864 | } | |
5865 | ||
5866 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
5867 | continue; | |
5868 | ||
5869 | /* Allocate memory for the section contents. */ | |
36591ba1 SL |
5870 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
5871 | if (s->contents == NULL) | |
5872 | return FALSE; | |
5873 | } | |
5874 | ||
5875 | /* Adjust dynamic symbols that point to the plt to account for the | |
5876 | now-known number of resN slots. */ | |
5877 | if (htab->res_n_size) | |
5878 | elf_link_hash_traverse (& htab->root, adjust_dynrelocs, info); | |
5879 | ||
4ef97a1b | 5880 | if (htab->root.dynamic_sections_created) |
36591ba1 SL |
5881 | { |
5882 | /* Add some entries to the .dynamic section. We fill in the | |
5883 | values later, in elf_nios2_finish_dynamic_sections, but we | |
5884 | must add the entries now so that we get the correct size for | |
5885 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5886 | dynamic linker and used by the debugger. */ | |
5887 | #define add_dynamic_entry(TAG, VAL) \ | |
5888 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
5889 | ||
0e1862bb | 5890 | if (!bfd_link_pic (info) && !add_dynamic_entry (DT_DEBUG, 0)) |
36591ba1 SL |
5891 | return FALSE; |
5892 | ||
4ef97a1b AM |
5893 | if (htab->root.sgotplt->size != 0 |
5894 | && !add_dynamic_entry (DT_PLTGOT, 0)) | |
36591ba1 SL |
5895 | return FALSE; |
5896 | ||
4ef97a1b | 5897 | if (htab->root.splt->size != 0 |
36591ba1 SL |
5898 | && (!add_dynamic_entry (DT_PLTRELSZ, 0) |
5899 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5900 | || !add_dynamic_entry (DT_JMPREL, 0))) | |
5901 | return FALSE; | |
5902 | ||
d4d8aee3 L |
5903 | if (relocs) |
5904 | { | |
5905 | if (!add_dynamic_entry (DT_RELA, 0) | |
36591ba1 | 5906 | || !add_dynamic_entry (DT_RELASZ, 0) |
d4d8aee3 L |
5907 | || !add_dynamic_entry (DT_RELAENT, |
5908 | sizeof (Elf32_External_Rela))) | |
5909 | return FALSE; | |
36591ba1 | 5910 | |
d4d8aee3 L |
5911 | if ((info->flags & DF_TEXTREL) == 0) |
5912 | elf_link_hash_traverse (&htab->root, | |
5913 | _bfd_elf_maybe_set_textrel, info); | |
36591ba1 | 5914 | |
d4d8aee3 L |
5915 | if ((info->flags & DF_TEXTREL) != 0 |
5916 | && !add_dynamic_entry (DT_TEXTREL, 0)) | |
5917 | return FALSE; | |
5918 | } | |
5919 | ||
5920 | if (!bfd_link_pic (info) && !add_dynamic_entry (DT_NIOS2_GP, 0)) | |
36591ba1 SL |
5921 | return FALSE; |
5922 | } | |
5923 | #undef add_dynamic_entry | |
5924 | ||
5925 | return TRUE; | |
5926 | } | |
5927 | ||
68faa637 AM |
5928 | /* Free the derived linker hash table. */ |
5929 | static void | |
d495ab0d | 5930 | nios2_elf32_link_hash_table_free (bfd *obfd) |
68faa637 AM |
5931 | { |
5932 | struct elf32_nios2_link_hash_table *htab | |
d495ab0d | 5933 | = (struct elf32_nios2_link_hash_table *) obfd->link.hash; |
68faa637 AM |
5934 | |
5935 | bfd_hash_table_free (&htab->bstab); | |
d495ab0d | 5936 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
5937 | } |
5938 | ||
36591ba1 SL |
5939 | /* Implement bfd_elf32_bfd_link_hash_table_create. */ |
5940 | static struct bfd_link_hash_table * | |
5941 | nios2_elf32_link_hash_table_create (bfd *abfd) | |
5942 | { | |
5943 | struct elf32_nios2_link_hash_table *ret; | |
986f0783 | 5944 | size_t amt = sizeof (struct elf32_nios2_link_hash_table); |
36591ba1 | 5945 | |
7bf52ea2 | 5946 | ret = bfd_zmalloc (amt); |
36591ba1 SL |
5947 | if (ret == NULL) |
5948 | return NULL; | |
5949 | ||
5950 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
5951 | link_hash_newfunc, | |
5952 | sizeof (struct | |
5953 | elf32_nios2_link_hash_entry), | |
5954 | NIOS2_ELF_DATA)) | |
5955 | { | |
5956 | free (ret); | |
5957 | return NULL; | |
5958 | } | |
5959 | ||
78058a5e SL |
5960 | /* Init the stub hash table too. */ |
5961 | if (!bfd_hash_table_init (&ret->bstab, stub_hash_newfunc, | |
5962 | sizeof (struct elf32_nios2_stub_hash_entry))) | |
d495ab0d AM |
5963 | { |
5964 | _bfd_elf_link_hash_table_free (abfd); | |
5965 | return NULL; | |
5966 | } | |
5967 | ret->root.root.hash_table_free = nios2_elf32_link_hash_table_free; | |
78058a5e | 5968 | |
36591ba1 SL |
5969 | return &ret->root.root; |
5970 | } | |
5971 | ||
5972 | /* Implement elf_backend_reloc_type_class. */ | |
5973 | static enum elf_reloc_type_class | |
7e612e98 AM |
5974 | nios2_elf32_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
5975 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
5976 | const Elf_Internal_Rela *rela) | |
36591ba1 SL |
5977 | { |
5978 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
5979 | { | |
5980 | case R_NIOS2_RELATIVE: | |
5981 | return reloc_class_relative; | |
5982 | case R_NIOS2_JUMP_SLOT: | |
5983 | return reloc_class_plt; | |
5984 | case R_NIOS2_COPY: | |
5985 | return reloc_class_copy; | |
5986 | default: | |
5987 | return reloc_class_normal; | |
5988 | } | |
5989 | } | |
5990 | ||
5991 | /* Return 1 if target is one of ours. */ | |
5992 | static bfd_boolean | |
5993 | is_nios2_elf_target (const struct bfd_target *targ) | |
5994 | { | |
6d00b590 AM |
5995 | return (targ == &nios2_elf32_le_vec |
5996 | || targ == &nios2_elf32_be_vec); | |
36591ba1 SL |
5997 | } |
5998 | ||
5999 | /* Implement elf_backend_add_symbol_hook. | |
6000 | This hook is called by the linker when adding symbols from an object | |
6001 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
6002 | static bfd_boolean | |
6003 | nios2_elf_add_symbol_hook (bfd *abfd, | |
6004 | struct bfd_link_info *info, | |
6005 | Elf_Internal_Sym *sym, | |
6006 | const char **namep ATTRIBUTE_UNUSED, | |
6007 | flagword *flagsp ATTRIBUTE_UNUSED, | |
6008 | asection **secp, | |
6009 | bfd_vma *valp) | |
6010 | { | |
36591ba1 | 6011 | if (sym->st_shndx == SHN_COMMON |
0e1862bb | 6012 | && !bfd_link_relocatable (info) |
36591ba1 SL |
6013 | && sym->st_size <= elf_gp_size (abfd) |
6014 | && is_nios2_elf_target (info->output_bfd->xvec)) | |
6015 | { | |
6016 | /* Common symbols less than or equal to -G nn bytes are automatically | |
6017 | put into .sbss. */ | |
6018 | struct elf32_nios2_link_hash_table *htab; | |
6019 | ||
6020 | htab = elf32_nios2_hash_table (info); | |
6021 | if (htab->sbss == NULL) | |
6022 | { | |
6023 | flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED; | |
6024 | ||
4ef97a1b AM |
6025 | if (htab->root.dynobj == NULL) |
6026 | htab->root.dynobj = abfd; | |
36591ba1 | 6027 | |
4ef97a1b AM |
6028 | htab->sbss = bfd_make_section_anyway_with_flags (htab->root.dynobj, |
6029 | ".sbss", flags); | |
36591ba1 SL |
6030 | if (htab->sbss == NULL) |
6031 | return FALSE; | |
6032 | } | |
6033 | ||
6034 | *secp = htab->sbss; | |
6035 | *valp = sym->st_size; | |
6036 | } | |
6037 | ||
6038 | return TRUE; | |
6039 | } | |
6040 | ||
6041 | /* Implement elf_backend_can_make_relative_eh_frame: | |
6042 | Decide whether to attempt to turn absptr or lsda encodings in | |
6043 | shared libraries into pcrel within the given input section. */ | |
6044 | static bfd_boolean | |
6045 | nios2_elf32_can_make_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED, | |
6046 | struct bfd_link_info *info | |
6047 | ATTRIBUTE_UNUSED, | |
6048 | asection *eh_frame_section | |
6049 | ATTRIBUTE_UNUSED) | |
6050 | { | |
6051 | /* We can't use PC-relative encodings in the .eh_frame section. */ | |
6052 | return FALSE; | |
6053 | } | |
6054 | ||
6055 | /* Implement elf_backend_special_sections. */ | |
6056 | const struct bfd_elf_special_section elf32_nios2_special_sections[] = | |
6057 | { | |
6058 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, | |
6059 | SHF_ALLOC + SHF_WRITE + SHF_NIOS2_GPREL }, | |
6060 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, | |
6061 | SHF_ALLOC + SHF_WRITE + SHF_NIOS2_GPREL }, | |
6062 | { NULL, 0, 0, 0, 0 } | |
6063 | }; | |
6064 | ||
6065 | #define ELF_ARCH bfd_arch_nios2 | |
6066 | #define ELF_TARGET_ID NIOS2_ELF_DATA | |
6067 | #define ELF_MACHINE_CODE EM_ALTERA_NIOS2 | |
6068 | ||
6069 | /* The Nios II MMU uses a 4K page size. */ | |
6070 | ||
6071 | #define ELF_MAXPAGESIZE 0x1000 | |
6072 | ||
6073 | #define bfd_elf32_bfd_link_hash_table_create \ | |
6074 | nios2_elf32_link_hash_table_create | |
6075 | ||
965b1d80 SL |
6076 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
6077 | nios2_elf32_merge_private_bfd_data | |
6078 | ||
36591ba1 SL |
6079 | /* Relocation table lookup macros. */ |
6080 | ||
6081 | #define bfd_elf32_bfd_reloc_type_lookup nios2_elf32_bfd_reloc_type_lookup | |
6082 | #define bfd_elf32_bfd_reloc_name_lookup nios2_elf32_bfd_reloc_name_lookup | |
6083 | ||
6084 | /* JUMP_TABLE_LINK macros. */ | |
6085 | ||
6086 | /* elf_info_to_howto (using RELA relocations). */ | |
6087 | ||
6088 | #define elf_info_to_howto nios2_elf32_info_to_howto | |
6089 | ||
6090 | /* elf backend functions. */ | |
6091 | ||
6092 | #define elf_backend_can_gc_sections 1 | |
6093 | #define elf_backend_can_refcount 1 | |
6094 | #define elf_backend_plt_readonly 1 | |
6095 | #define elf_backend_want_got_plt 1 | |
5474d94f | 6096 | #define elf_backend_want_dynrelro 1 |
36591ba1 | 6097 | #define elf_backend_rela_normal 1 |
64f52338 | 6098 | #define elf_backend_dtrel_excludes_plt 1 |
36591ba1 SL |
6099 | |
6100 | #define elf_backend_relocate_section nios2_elf32_relocate_section | |
6101 | #define elf_backend_section_flags nios2_elf32_section_flags | |
6102 | #define elf_backend_fake_sections nios2_elf32_fake_sections | |
6103 | #define elf_backend_check_relocs nios2_elf32_check_relocs | |
6104 | ||
6105 | #define elf_backend_gc_mark_hook nios2_elf32_gc_mark_hook | |
36591ba1 SL |
6106 | #define elf_backend_create_dynamic_sections \ |
6107 | nios2_elf32_create_dynamic_sections | |
6108 | #define elf_backend_finish_dynamic_symbol nios2_elf32_finish_dynamic_symbol | |
6109 | #define elf_backend_finish_dynamic_sections \ | |
6110 | nios2_elf32_finish_dynamic_sections | |
6111 | #define elf_backend_adjust_dynamic_symbol nios2_elf32_adjust_dynamic_symbol | |
6112 | #define elf_backend_reloc_type_class nios2_elf32_reloc_type_class | |
6113 | #define elf_backend_size_dynamic_sections nios2_elf32_size_dynamic_sections | |
6114 | #define elf_backend_add_symbol_hook nios2_elf_add_symbol_hook | |
6115 | #define elf_backend_copy_indirect_symbol nios2_elf32_copy_indirect_symbol | |
965b1d80 | 6116 | #define elf_backend_object_p nios2_elf32_object_p |
36591ba1 SL |
6117 | |
6118 | #define elf_backend_grok_prstatus nios2_grok_prstatus | |
6119 | #define elf_backend_grok_psinfo nios2_grok_psinfo | |
6120 | ||
6121 | #undef elf_backend_can_make_relative_eh_frame | |
6122 | #define elf_backend_can_make_relative_eh_frame \ | |
6123 | nios2_elf32_can_make_relative_eh_frame | |
6124 | ||
6125 | #define elf_backend_special_sections elf32_nios2_special_sections | |
6126 | ||
6d00b590 | 6127 | #define TARGET_LITTLE_SYM nios2_elf32_le_vec |
36591ba1 | 6128 | #define TARGET_LITTLE_NAME "elf32-littlenios2" |
6d00b590 | 6129 | #define TARGET_BIG_SYM nios2_elf32_be_vec |
36591ba1 SL |
6130 | #define TARGET_BIG_NAME "elf32-bignios2" |
6131 | ||
6132 | #define elf_backend_got_header_size 12 | |
03d5b773 | 6133 | #define elf_backend_default_execstack 0 |
36591ba1 SL |
6134 | |
6135 | #include "elf32-target.h" |