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elf_backend_dtrel_excludes_plt
[thirdparty/binutils-gdb.git] / bfd / elf32-or1k.c
1 /* Or1k-specific support for 32-bit ELF.
2 Copyright (C) 2001-2016 Free Software Foundation, Inc.
3 Contributed for OR32 by Johan Rydberg, jrydberg@opencores.org
4
5 PIC parts added by Stefan Kristiansson, stefan.kristiansson@saunalahti.fi,
6 largely based on elf32-m32r.c and elf32-microblaze.c.
7
8 This file is part of BFD, the Binary File Descriptor library.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, see <http://www.gnu.org/licenses/>. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf/or1k.h"
28 #include "libiberty.h"
29
30 #define PLT_ENTRY_SIZE 20
31
32 #define PLT0_ENTRY_WORD0 0x19800000 /* l.movhi r12, 0 <- hi(.got+4) */
33 #define PLT0_ENTRY_WORD1 0xa98c0000 /* l.ori r12, r12, 0 <- lo(.got+4) */
34 #define PLT0_ENTRY_WORD2 0x85ec0004 /* l.lwz r15, 4(r12) <- *(.got+8)*/
35 #define PLT0_ENTRY_WORD3 0x44007800 /* l.jr r15 */
36 #define PLT0_ENTRY_WORD4 0x858c0000 /* l.lwz r12, 0(r12) */
37
38 #define PLT0_PIC_ENTRY_WORD0 0x85900004 /* l.lwz r12, 4(r16) */
39 #define PLT0_PIC_ENTRY_WORD1 0x85f00008 /* l.lwz r15, 8(r16) */
40 #define PLT0_PIC_ENTRY_WORD2 0x44007800 /* l.jr r15 */
41 #define PLT0_PIC_ENTRY_WORD3 0x15000000 /* l.nop */
42 #define PLT0_PIC_ENTRY_WORD4 0x15000000 /* l.nop */
43
44 #define PLT_ENTRY_WORD0 0x19800000 /* l.movhi r12, 0 <- hi(got idx addr) */
45 #define PLT_ENTRY_WORD1 0xa98c0000 /* l.ori r12, r12, 0 <- lo(got idx addr) */
46 #define PLT_ENTRY_WORD2 0x858c0000 /* l.lwz r12, 0(r12) */
47 #define PLT_ENTRY_WORD3 0x44006000 /* l.jr r12 */
48 #define PLT_ENTRY_WORD4 0xa9600000 /* l.ori r11, r0, 0 <- reloc offset */
49
50 #define PLT_PIC_ENTRY_WORD0 0x85900000 /* l.lwz r12, 0(r16) <- index in got */
51 #define PLT_PIC_ENTRY_WORD1 0xa9600000 /* l.ori r11, r0, 0 <- reloc offset */
52 #define PLT_PIC_ENTRY_WORD2 0x44006000 /* l.jr r12 */
53 #define PLT_PIC_ENTRY_WORD3 0x15000000 /* l.nop */
54 #define PLT_PIC_ENTRY_WORD4 0x15000000 /* l.nop */
55
56 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57
58 static reloc_howto_type or1k_elf_howto_table[] =
59 {
60 /* This reloc does nothing. */
61 HOWTO (R_OR1K_NONE, /* type */
62 0, /* rightshift */
63 3, /* size (0 = byte, 1 = short, 2 = long) */
64 0, /* bitsize */
65 FALSE, /* pc_relative */
66 0, /* bitpos */
67 complain_overflow_dont, /* complain_on_overflow */
68 bfd_elf_generic_reloc, /* special_function */
69 "R_OR1K_NONE", /* name */
70 FALSE, /* partial_inplace */
71 0, /* src_mask */
72 0, /* dst_mask */
73 FALSE), /* pcrel_offset */
74
75 HOWTO (R_OR1K_32,
76 0, /* rightshift */
77 2, /* size (0 = byte, 1 = short, 2 = long) */
78 32, /* bitsize */
79 FALSE, /* pc_relative */
80 0, /* bitpos */
81 complain_overflow_unsigned, /* complain_on_overflow */
82 bfd_elf_generic_reloc, /* special_function */
83 "R_OR1K_32", /* name */
84 FALSE, /* partial_inplace */
85 0, /* src_mask */
86 0xffffffff, /* dst_mask */
87 FALSE), /* pcrel_offset */
88
89 HOWTO (R_OR1K_16,
90 0, /* rightshift */
91 1, /* size (0 = byte, 1 = short, 2 = long) */
92 16, /* bitsize */
93 FALSE, /* pc_relative */
94 0, /* bitpos */
95 complain_overflow_unsigned, /* complain_on_overflow */
96 bfd_elf_generic_reloc, /* special_function */
97 "R_OR1K_16", /* name */
98 FALSE, /* partial_inplace */
99 0, /* src_mask */
100 0xffff, /* dst_mask */
101 FALSE), /* pcrel_offset */
102
103 HOWTO (R_OR1K_8,
104 0, /* rightshift */
105 0, /* size (0 = byte, 1 = short, 2 = long) */
106 8, /* bitsize */
107 FALSE, /* pc_relative */
108 0, /* bitpos */
109 complain_overflow_unsigned, /* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_OR1K_8", /* name */
112 FALSE, /* partial_inplace */
113 0, /* src_mask */
114 0xff, /* dst_mask */
115 FALSE), /* pcrel_offset */
116
117 HOWTO (R_OR1K_LO_16_IN_INSN, /* type */
118 0, /* rightshift */
119 2, /* size (0 = byte, 1 = short, 2 = long) */
120 16, /* bitsize */
121 FALSE, /* pc_relative */
122 0, /* bitpos */
123 complain_overflow_dont, /* complain_on_overflow */
124 bfd_elf_generic_reloc, /* special_function */
125 "R_OR1K_LO_16_IN_INSN", /* name */
126 FALSE, /* partial_inplace */
127 0, /* src_mask */
128 0x0000ffff, /* dst_mask */
129 FALSE), /* pcrel_offset */
130
131 HOWTO (R_OR1K_HI_16_IN_INSN, /* type */
132 16, /* rightshift */
133 2, /* size (0 = byte, 1 = short, 2 = long) */
134 16, /* bitsize */
135 FALSE, /* pc_relative */
136 0, /* bitpos */
137 complain_overflow_dont, /* complain_on_overflow */
138 bfd_elf_generic_reloc, /* special_function */
139 "R_OR1K_HI_16_IN_INSN", /* name */
140 FALSE, /* partial_inplace */
141 0, /* src_mask */
142 0x0000ffff, /* dst_mask */
143 FALSE), /* pcrel_offset */
144
145 /* A PC relative 26 bit relocation, right shifted by 2. */
146 HOWTO (R_OR1K_INSN_REL_26, /* type */
147 2, /* rightshift */
148 2, /* size (0 = byte, 1 = short, 2 = long) */
149 26, /* bitsize */
150 TRUE, /* pc_relative */
151 0, /* bitpos */
152 complain_overflow_signed, /* complain_on_overflow */
153 bfd_elf_generic_reloc, /* special_function */
154 "R_OR1K_INSN_REL_26", /* name */
155 FALSE, /* partial_inplace */
156 0, /* src_mask */
157 0x03ffffff, /* dst_mask */
158 TRUE), /* pcrel_offset */
159
160 /* GNU extension to record C++ vtable hierarchy. */
161 HOWTO (R_OR1K_GNU_VTINHERIT, /* type */
162 0, /* rightshift */
163 2, /* size (0 = byte, 1 = short, 2 = long) */
164 0, /* bitsize */
165 FALSE, /* pc_relative */
166 0, /* bitpos */
167 complain_overflow_dont, /* complain_on_overflow */
168 NULL, /* special_function */
169 "R_OR1K_GNU_VTINHERIT", /* name */
170 FALSE, /* partial_inplace */
171 0, /* src_mask */
172 0, /* dst_mask */
173 FALSE), /* pcrel_offset */
174
175 /* GNU extension to record C++ vtable member usage. */
176 HOWTO (R_OR1K_GNU_VTENTRY, /* type */
177 0, /* rightshift */
178 2, /* size (0 = byte, 1 = short, 2 = long) */
179 0, /* bitsize */
180 FALSE, /* pc_relative */
181 0, /* bitpos */
182 complain_overflow_dont, /* complain_on_overflow */
183 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
184 "R_OR1K_GNU_VTENTRY", /* name */
185 FALSE, /* partial_inplace */
186 0, /* src_mask */
187 0, /* dst_mask */
188 FALSE), /* pcrel_offset */
189
190 HOWTO (R_OR1K_32_PCREL,
191 0, /* rightshift */
192 2, /* size (0 = byte, 1 = short, 2 = long) */
193 32, /* bitsize */
194 TRUE, /* pc_relative */
195 0, /* bitpos */
196 complain_overflow_signed, /* complain_on_overflow */
197 bfd_elf_generic_reloc, /* special_function */
198 "R_OR1K_32_PCREL", /* name */
199 FALSE, /* partial_inplace */
200 0, /* src_mask */
201 0xffffffff, /* dst_mask */
202 TRUE), /* pcrel_offset */
203
204 HOWTO (R_OR1K_16_PCREL,
205 0, /* rightshift */
206 1, /* size (0 = byte, 1 = short, 2 = long) */
207 16, /* bitsize */
208 TRUE, /* pc_relative */
209 0, /* bitpos */
210 complain_overflow_signed, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_OR1K_16_PCREL", /* name */
213 FALSE, /* partial_inplace */
214 0, /* src_mask */
215 0xffff, /* dst_mask */
216 TRUE), /* pcrel_offset */
217
218 HOWTO (R_OR1K_8_PCREL,
219 0, /* rightshift */
220 0, /* size (0 = byte, 1 = short, 2 = long) */
221 8, /* bitsize */
222 TRUE, /* pc_relative */
223 0, /* bitpos */
224 complain_overflow_signed, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_OR1K_8_PCREL", /* name */
227 FALSE, /* partial_inplace */
228 0, /* src_mask */
229 0xff, /* dst_mask */
230 TRUE), /* pcrel_offset */
231
232 HOWTO (R_OR1K_GOTPC_HI16, /* Type. */
233 16, /* Rightshift. */
234 2, /* Size (0 = byte, 1 = short, 2 = long). */
235 16, /* Bitsize. */
236 TRUE, /* PC_relative. */
237 0, /* Bitpos. */
238 complain_overflow_dont, /* Complain on overflow. */
239 bfd_elf_generic_reloc, /* Special Function. */
240 "R_OR1K_GOTPC_HI16", /* Name. */
241 FALSE, /* Partial Inplace. */
242 0, /* Source Mask. */
243 0xffff, /* Dest Mask. */
244 TRUE), /* PC relative offset? */
245
246 HOWTO (R_OR1K_GOTPC_LO16, /* Type. */
247 0, /* Rightshift. */
248 2, /* Size (0 = byte, 1 = short, 2 = long). */
249 16, /* Bitsize. */
250 TRUE, /* PC_relative. */
251 0, /* Bitpos. */
252 complain_overflow_dont, /* Complain on overflow. */
253 bfd_elf_generic_reloc, /* Special Function. */
254 "R_OR1K_GOTPC_LO16", /* Name. */
255 FALSE, /* Partial Inplace. */
256 0, /* Source Mask. */
257 0xffff, /* Dest Mask. */
258 TRUE), /* PC relative offset? */
259
260 HOWTO (R_OR1K_GOT16, /* type */
261 0, /* rightshift */
262 2, /* size (0 = byte, 1 = short, 2 = long) */
263 16, /* bitsize */
264 FALSE, /* pc_relative */
265 0, /* bitpos */
266 complain_overflow_signed, /* complain_on_overflow */
267 bfd_elf_generic_reloc, /* special_function */
268 "R_OR1K_GOT16", /* name */
269 FALSE, /* partial_inplace */
270 0, /* src_mask */
271 0xffff, /* dst_mask */
272 FALSE), /* pcrel_offset */
273
274 /* A 26 bit PLT relocation. Shifted by 2. */
275 HOWTO (R_OR1K_PLT26, /* Type. */
276 2, /* Rightshift. */
277 2, /* Size (0 = byte, 1 = short, 2 = long). */
278 26, /* Bitsize. */
279 TRUE, /* PC_relative. */
280 0, /* Bitpos. */
281 complain_overflow_dont, /* Complain on overflow. */
282 bfd_elf_generic_reloc,/* Special Function. */
283 "R_OR1K_PLT26", /* Name. */
284 FALSE, /* Partial Inplace. */
285 0, /* Source Mask. */
286 0x03ffffff, /* Dest Mask. */
287 TRUE), /* PC relative offset? */
288
289 HOWTO (R_OR1K_GOTOFF_HI16, /* type */
290 16, /* rightshift */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
292 16, /* bitsize */
293 FALSE, /* pc_relative */
294 0, /* bitpos */
295 complain_overflow_dont, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_OR1K_GOTOFF_HI16", /* name */
298 FALSE, /* partial_inplace */
299 0x0, /* src_mask */
300 0xffff, /* dst_mask */
301 FALSE), /* pcrel_offset */
302
303 HOWTO (R_OR1K_GOTOFF_LO16, /* type */
304 0, /* rightshift */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
306 16, /* bitsize */
307 FALSE, /* pc_relative */
308 0, /* bitpos */
309 complain_overflow_dont, /* complain_on_overflow */
310 bfd_elf_generic_reloc, /* special_function */
311 "R_OR1K_GOTOFF_LO16", /* name */
312 FALSE, /* partial_inplace */
313 0x0, /* src_mask */
314 0xffff, /* dst_mask */
315 FALSE), /* pcrel_offset */
316
317 HOWTO (R_OR1K_COPY, /* type */
318 0, /* rightshift */
319 2, /* size (0 = byte, 1 = short, 2 = long) */
320 32, /* bitsize */
321 FALSE, /* pc_relative */
322 0, /* bitpos */
323 complain_overflow_bitfield, /* complain_on_overflow */
324 bfd_elf_generic_reloc, /* special_function */
325 "R_OR1K_COPY", /* name */
326 FALSE, /* partial_inplace */
327 0xffffffff, /* src_mask */
328 0xffffffff, /* dst_mask */
329 FALSE), /* pcrel_offset */
330
331 HOWTO (R_OR1K_GLOB_DAT, /* type */
332 0, /* rightshift */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
334 32, /* bitsize */
335 FALSE, /* pc_relative */
336 0, /* bitpos */
337 complain_overflow_bitfield, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_OR1K_GLOB_DAT", /* name */
340 FALSE, /* partial_inplace */
341 0xffffffff, /* src_mask */
342 0xffffffff, /* dst_mask */
343 FALSE), /* pcrel_offset */
344
345 HOWTO (R_OR1K_JMP_SLOT, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 32, /* bitsize */
349 FALSE, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_bitfield, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_OR1K_JMP_SLOT", /* name */
354 FALSE, /* partial_inplace */
355 0xffffffff, /* src_mask */
356 0xffffffff, /* dst_mask */
357 FALSE), /* pcrel_offset */
358
359 HOWTO (R_OR1K_RELATIVE, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 32, /* bitsize */
363 FALSE, /* pc_relative */
364 0, /* bitpos */
365 complain_overflow_bitfield, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_OR1K_RELATIVE", /* name */
368 FALSE, /* partial_inplace */
369 0xffffffff, /* src_mask */
370 0xffffffff, /* dst_mask */
371 FALSE), /* pcrel_offset */
372
373 HOWTO (R_OR1K_TLS_GD_HI16, /* type */
374 16, /* rightshift */
375 2, /* size (0 = byte, 1 = short, 2 = long) */
376 16, /* bitsize */
377 FALSE, /* pc_relative */
378 0, /* bitpos */
379 complain_overflow_dont, /* complain_on_overflow */
380 bfd_elf_generic_reloc, /* special_function */
381 "R_OR1K_TLS_GD_HI16", /* name */
382 FALSE, /* partial_inplace */
383 0x0, /* src_mask */
384 0xffff, /* dst_mask */
385 FALSE), /* pcrel_offset */
386
387 HOWTO (R_OR1K_TLS_GD_LO16, /* type */
388 0, /* rightshift */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
390 16, /* bitsize */
391 FALSE, /* pc_relative */
392 0, /* bitpos */
393 complain_overflow_dont, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_OR1K_TLS_GD_LO16", /* name */
396 FALSE, /* partial_inplace */
397 0x0, /* src_mask */
398 0xffff, /* dst_mask */
399 FALSE), /* pcrel_offset */
400
401 HOWTO (R_OR1K_TLS_LDM_HI16, /* type */
402 16, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
405 FALSE, /* pc_relative */
406 0, /* bitpos */
407 complain_overflow_dont, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_OR1K_TLS_LDM_HI16", /* name */
410 FALSE, /* partial_inplace */
411 0x0, /* src_mask */
412 0xffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
414
415 HOWTO (R_OR1K_TLS_LDM_LO16, /* type */
416 0, /* rightshift */
417 2, /* size (0 = byte, 1 = short, 2 = long) */
418 16, /* bitsize */
419 FALSE, /* pc_relative */
420 0, /* bitpos */
421 complain_overflow_dont, /* complain_on_overflow */
422 bfd_elf_generic_reloc, /* special_function */
423 "R_OR1K_TLS_LDM_LO16", /* name */
424 FALSE, /* partial_inplace */
425 0x0, /* src_mask */
426 0xffff, /* dst_mask */
427 FALSE), /* pcrel_offset */
428
429 HOWTO (R_OR1K_TLS_LDO_HI16, /* type */
430 16, /* rightshift */
431 2, /* size (0 = byte, 1 = short, 2 = long) */
432 16, /* bitsize */
433 FALSE, /* pc_relative */
434 0, /* bitpos */
435 complain_overflow_dont, /* complain_on_overflow */
436 bfd_elf_generic_reloc, /* special_function */
437 "R_OR1K_TLS_LDO_HI16", /* name */
438 FALSE, /* partial_inplace */
439 0x0, /* src_mask */
440 0xffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
442
443 HOWTO (R_OR1K_TLS_LDO_LO16, /* type */
444 0, /* rightshift */
445 2, /* size (0 = byte, 1 = short, 2 = long) */
446 16, /* bitsize */
447 FALSE, /* pc_relative */
448 0, /* bitpos */
449 complain_overflow_dont, /* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
451 "R_OR1K_TLS_LDO_LO16", /* name */
452 FALSE, /* partial_inplace */
453 0x0, /* src_mask */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
456
457 HOWTO (R_OR1K_TLS_IE_HI16, /* type */
458 16, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_OR1K_TLS_IE_HI16", /* name */
466 FALSE, /* partial_inplace */
467 0x0, /* src_mask */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
470
471 HOWTO (R_OR1K_TLS_IE_LO16, /* type */
472 0, /* rightshift */
473 2, /* size (0 = byte, 1 = short, 2 = long) */
474 16, /* bitsize */
475 FALSE, /* pc_relative */
476 0, /* bitpos */
477 complain_overflow_dont, /* complain_on_overflow */
478 bfd_elf_generic_reloc, /* special_function */
479 "R_OR1K_TLS_IE_LO16", /* name */
480 FALSE, /* partial_inplace */
481 0x0, /* src_mask */
482 0xffff, /* dst_mask */
483 FALSE), /* pcrel_offset */
484
485 HOWTO (R_OR1K_TLS_LE_HI16, /* type */
486 16, /* rightshift */
487 2, /* size (0 = byte, 1 = short, 2 = long) */
488 16, /* bitsize */
489 FALSE, /* pc_relative */
490 0, /* bitpos */
491 complain_overflow_dont, /* complain_on_overflow */
492 bfd_elf_generic_reloc, /* special_function */
493 "R_OR1K_TLS_LE_HI16", /* name */
494 FALSE, /* partial_inplace */
495 0x0, /* src_mask */
496 0xffff, /* dst_mask */
497 FALSE), /* pcrel_offset */
498
499 HOWTO (R_OR1K_TLS_LE_LO16, /* type */
500 0, /* rightshift */
501 2, /* size (0 = byte, 1 = short, 2 = long) */
502 16, /* bitsize */
503 FALSE, /* pc_relative */
504 0, /* bitpos */
505 complain_overflow_dont, /* complain_on_overflow */
506 bfd_elf_generic_reloc, /* special_function */
507 "R_OR1K_TLS_LE_LO16", /* name */
508 FALSE, /* partial_inplace */
509 0x0, /* src_mask */
510 0xffff, /* dst_mask */
511 FALSE), /* pcrel_offset */
512
513 };
514
515 /* Map BFD reloc types to Or1k ELF reloc types. */
516
517 struct or1k_reloc_map
518 {
519 bfd_reloc_code_real_type bfd_reloc_val;
520 unsigned int or1k_reloc_val;
521 };
522
523 static const struct or1k_reloc_map or1k_reloc_map[] =
524 {
525 { BFD_RELOC_NONE, R_OR1K_NONE },
526 { BFD_RELOC_32, R_OR1K_32 },
527 { BFD_RELOC_16, R_OR1K_16 },
528 { BFD_RELOC_8, R_OR1K_8 },
529 { BFD_RELOC_LO16, R_OR1K_LO_16_IN_INSN },
530 { BFD_RELOC_HI16, R_OR1K_HI_16_IN_INSN },
531 { BFD_RELOC_OR1K_REL_26, R_OR1K_INSN_REL_26 },
532 { BFD_RELOC_VTABLE_ENTRY, R_OR1K_GNU_VTENTRY },
533 { BFD_RELOC_VTABLE_INHERIT, R_OR1K_GNU_VTINHERIT },
534 { BFD_RELOC_32_PCREL, R_OR1K_32_PCREL },
535 { BFD_RELOC_16_PCREL, R_OR1K_16_PCREL },
536 { BFD_RELOC_8_PCREL, R_OR1K_8_PCREL },
537 { BFD_RELOC_OR1K_GOTPC_HI16, R_OR1K_GOTPC_HI16 },
538 { BFD_RELOC_OR1K_GOTPC_LO16, R_OR1K_GOTPC_LO16 },
539 { BFD_RELOC_OR1K_GOT16, R_OR1K_GOT16 },
540 { BFD_RELOC_OR1K_PLT26, R_OR1K_PLT26 },
541 { BFD_RELOC_OR1K_GOTOFF_HI16, R_OR1K_GOTOFF_HI16 },
542 { BFD_RELOC_OR1K_GOTOFF_LO16, R_OR1K_GOTOFF_LO16 },
543 { BFD_RELOC_OR1K_GLOB_DAT, R_OR1K_GLOB_DAT },
544 { BFD_RELOC_OR1K_COPY, R_OR1K_COPY },
545 { BFD_RELOC_OR1K_JMP_SLOT, R_OR1K_JMP_SLOT },
546 { BFD_RELOC_OR1K_RELATIVE, R_OR1K_RELATIVE },
547 { BFD_RELOC_OR1K_TLS_GD_HI16, R_OR1K_TLS_GD_HI16 },
548 { BFD_RELOC_OR1K_TLS_GD_LO16, R_OR1K_TLS_GD_LO16 },
549 { BFD_RELOC_OR1K_TLS_LDM_HI16, R_OR1K_TLS_LDM_HI16 },
550 { BFD_RELOC_OR1K_TLS_LDM_LO16, R_OR1K_TLS_LDM_LO16 },
551 { BFD_RELOC_OR1K_TLS_LDO_HI16, R_OR1K_TLS_LDO_HI16 },
552 { BFD_RELOC_OR1K_TLS_LDO_LO16, R_OR1K_TLS_LDO_LO16 },
553 { BFD_RELOC_OR1K_TLS_IE_HI16, R_OR1K_TLS_IE_HI16 },
554 { BFD_RELOC_OR1K_TLS_IE_LO16, R_OR1K_TLS_IE_LO16 },
555 { BFD_RELOC_OR1K_TLS_LE_HI16, R_OR1K_TLS_LE_HI16 },
556 { BFD_RELOC_OR1K_TLS_LE_LO16, R_OR1K_TLS_LE_LO16 },
557 };
558
559 /* The linker needs to keep track of the number of relocs that it
560 decides to copy as dynamic relocs in check_relocs for each symbol.
561 This is so that it can later discard them if they are found to be
562 unnecessary. We store the information in a field extending the
563 regular ELF linker hash table. */
564
565 struct elf_or1k_dyn_relocs
566 {
567 struct elf_or1k_dyn_relocs *next;
568
569 /* The input section of the reloc. */
570 asection *sec;
571
572 /* Total number of relocs copied for the input section. */
573 bfd_size_type count;
574
575 /* Number of pc-relative relocs copied for the input section. */
576 bfd_size_type pc_count;
577 };
578
579 #define TLS_UNKNOWN 0
580 #define TLS_NONE 1
581 #define TLS_GD 2
582 #define TLS_LD 3
583 #define TLS_IE 4
584 #define TLS_LE 5
585
586 /* ELF linker hash entry. */
587 struct elf_or1k_link_hash_entry
588 {
589 struct elf_link_hash_entry root;
590
591 /* Track dynamic relocs copied for this symbol. */
592 struct elf_or1k_dyn_relocs *dyn_relocs;
593
594 /* Track type of TLS access. */
595 unsigned char tls_type;
596 };
597
598 /* ELF object data. */
599 struct elf_or1k_obj_tdata
600 {
601 struct elf_obj_tdata root;
602
603 /* tls_type for each local got entry. */
604 unsigned char *local_tls_type;
605 };
606
607 #define elf_or1k_tdata(abfd) \
608 ((struct elf_or1k_obj_tdata *) (abfd)->tdata.any)
609
610 #define elf_or1k_local_tls_type(abfd) \
611 (elf_or1k_tdata (abfd)->local_tls_type)
612
613 /* ELF linker hash table. */
614 struct elf_or1k_link_hash_table
615 {
616 struct elf_link_hash_table root;
617
618 /* Short-cuts to get to dynamic linker sections. */
619 asection *sdynbss;
620 asection *srelbss;
621
622 /* Small local sym to section mapping cache. */
623 struct sym_cache sym_sec;
624 };
625
626 /* Get the ELF linker hash table from a link_info structure. */
627 #define or1k_elf_hash_table(p) \
628 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
629 == OR1K_ELF_DATA ? ((struct elf_or1k_link_hash_table *) ((p)->hash)) : NULL)
630
631 static bfd_boolean
632 elf_or1k_mkobject (bfd *abfd)
633 {
634 return bfd_elf_allocate_object (abfd, sizeof (struct elf_or1k_obj_tdata),
635 OR1K_ELF_DATA);
636 }
637
638 /* Create an entry in an or1k ELF linker hash table. */
639
640 static struct bfd_hash_entry *
641 or1k_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
642 struct bfd_hash_table *table,
643 const char *string)
644 {
645 struct elf_or1k_link_hash_entry *ret =
646 (struct elf_or1k_link_hash_entry *) entry;
647
648 /* Allocate the structure if it has not already been allocated by a
649 subclass. */
650 if (ret == NULL)
651 ret = bfd_hash_allocate (table,
652 sizeof (struct elf_or1k_link_hash_entry));
653 if (ret == NULL)
654 return NULL;
655
656 /* Call the allocation method of the superclass. */
657 ret = ((struct elf_or1k_link_hash_entry *)
658 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
659 table, string));
660 if (ret != NULL)
661 {
662 struct elf_or1k_link_hash_entry *eh;
663
664 eh = (struct elf_or1k_link_hash_entry *) ret;
665 eh->dyn_relocs = NULL;
666 eh->tls_type = TLS_UNKNOWN;
667 }
668
669 return (struct bfd_hash_entry *) ret;
670 }
671
672 /* Create an or1k ELF linker hash table. */
673
674 static struct bfd_link_hash_table *
675 or1k_elf_link_hash_table_create (bfd *abfd)
676 {
677 struct elf_or1k_link_hash_table *ret;
678 bfd_size_type amt = sizeof (struct elf_or1k_link_hash_table);
679
680 ret = bfd_zmalloc (amt);
681 if (ret == NULL)
682 return NULL;
683
684 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
685 or1k_elf_link_hash_newfunc,
686 sizeof (struct elf_or1k_link_hash_entry),
687 OR1K_ELF_DATA))
688 {
689 free (ret);
690 return NULL;
691 }
692
693 return &ret->root.root;
694 }
695
696 static reloc_howto_type *
697 or1k_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
698 bfd_reloc_code_real_type code)
699 {
700 unsigned int i;
701
702 for (i = ARRAY_SIZE (or1k_reloc_map); i--;)
703 if (or1k_reloc_map[i].bfd_reloc_val == code)
704 return & or1k_elf_howto_table[or1k_reloc_map[i].or1k_reloc_val];
705
706 return NULL;
707 }
708
709 static reloc_howto_type *
710 or1k_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
711 const char *r_name)
712 {
713 unsigned int i;
714
715 for (i = 0;
716 i < (sizeof (or1k_elf_howto_table)
717 / sizeof (or1k_elf_howto_table[0]));
718 i++)
719 if (or1k_elf_howto_table[i].name != NULL
720 && strcasecmp (or1k_elf_howto_table[i].name, r_name) == 0)
721 return &or1k_elf_howto_table[i];
722
723 return NULL;
724 }
725
726 /* Set the howto pointer for an Or1k ELF reloc. */
727
728 static void
729 or1k_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
730 arelent * cache_ptr,
731 Elf_Internal_Rela * dst)
732 {
733 unsigned int r_type;
734
735 r_type = ELF32_R_TYPE (dst->r_info);
736 if (r_type >= (unsigned int) R_OR1K_max)
737 {
738 /* xgettext:c-format */
739 _bfd_error_handler (_("%B: invalid OR1K reloc number: %d"), abfd, r_type);
740 r_type = 0;
741 }
742 cache_ptr->howto = & or1k_elf_howto_table[r_type];
743 }
744
745
746 /* Return the relocation value for @tpoff relocations.. */
747 static bfd_vma
748 tpoff (struct bfd_link_info *info, bfd_vma address)
749 {
750 /* If tls_sec is NULL, we should have signalled an error already. */
751 if (elf_hash_table (info)->tls_sec == NULL)
752 return 0;
753
754 /* The thread pointer on or1k stores the address after the TCB where
755 the data is, just compute the difference. No need to compensate
756 for the size of TCB. */
757 return (address - elf_hash_table (info)->tls_sec->vma);
758 }
759
760 /* Relocate an Or1k ELF section.
761
762 The RELOCATE_SECTION function is called by the new ELF backend linker
763 to handle the relocations for a section.
764
765 The relocs are always passed as Rela structures; if the section
766 actually uses Rel structures, the r_addend field will always be
767 zero.
768
769 This function is responsible for adjusting the section contents as
770 necessary, and (if using Rela relocs and generating a relocatable
771 output file) adjusting the reloc addend as necessary.
772
773 This function does not have to worry about setting the reloc
774 address or the reloc symbol index.
775
776 LOCAL_SYMS is a pointer to the swapped in local symbols.
777
778 LOCAL_SECTIONS is an array giving the section in the input file
779 corresponding to the st_shndx field of each local symbol.
780
781 The global hash table entry for the global symbols can be found
782 via elf_sym_hashes (input_bfd).
783
784 When generating relocatable output, this function must handle
785 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
786 going to be the section symbol corresponding to the output
787 section, which means that the addend must be adjusted
788 accordingly. */
789
790 static bfd_boolean
791 or1k_elf_relocate_section (bfd *output_bfd,
792 struct bfd_link_info *info,
793 bfd *input_bfd,
794 asection *input_section,
795 bfd_byte *contents,
796 Elf_Internal_Rela *relocs,
797 Elf_Internal_Sym *local_syms,
798 asection **local_sections)
799 {
800 Elf_Internal_Shdr *symtab_hdr;
801 struct elf_link_hash_entry **sym_hashes;
802 Elf_Internal_Rela *rel;
803 Elf_Internal_Rela *relend;
804 struct elf_or1k_link_hash_table *htab = or1k_elf_hash_table (info);
805 bfd *dynobj;
806 asection *sreloc;
807 bfd_vma *local_got_offsets;
808 asection *sgot;
809
810 if (htab == NULL)
811 return FALSE;
812
813 dynobj = htab->root.dynobj;
814 local_got_offsets = elf_local_got_offsets (input_bfd);
815
816 sreloc = elf_section_data (input_section)->sreloc;
817
818 sgot = htab->root.sgot;
819
820 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
821 sym_hashes = elf_sym_hashes (input_bfd);
822 relend = relocs + input_section->reloc_count;
823
824 for (rel = relocs; rel < relend; rel++)
825 {
826 reloc_howto_type *howto;
827 unsigned long r_symndx;
828 Elf_Internal_Sym *sym;
829 asection *sec;
830 struct elf_link_hash_entry *h;
831 bfd_vma relocation;
832 bfd_reloc_status_type r;
833 const char *name = NULL;
834 int r_type;
835
836 r_type = ELF32_R_TYPE (rel->r_info);
837 r_symndx = ELF32_R_SYM (rel->r_info);
838
839 if (r_type == R_OR1K_GNU_VTINHERIT
840 || r_type == R_OR1K_GNU_VTENTRY)
841 continue;
842
843 if (r_type < 0 || r_type >= (int) R_OR1K_max)
844 {
845 bfd_set_error (bfd_error_bad_value);
846 return FALSE;
847 }
848
849 howto = or1k_elf_howto_table + ELF32_R_TYPE (rel->r_info);
850 h = NULL;
851 sym = NULL;
852 sec = NULL;
853
854 if (r_symndx < symtab_hdr->sh_info)
855 {
856 sym = local_syms + r_symndx;
857 sec = local_sections[r_symndx];
858 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
859
860 name = bfd_elf_string_from_elf_section
861 (input_bfd, symtab_hdr->sh_link, sym->st_name);
862 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
863 }
864 else
865 {
866 bfd_boolean unresolved_reloc, warned, ignored;
867
868 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
869 r_symndx, symtab_hdr, sym_hashes,
870 h, sec, relocation,
871 unresolved_reloc, warned, ignored);
872 }
873
874 if (sec != NULL && discarded_section (sec))
875 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
876 rel, 1, relend, howto, 0, contents);
877
878 if (bfd_link_relocatable (info))
879 continue;
880
881 switch (howto->type)
882 {
883 case R_OR1K_PLT26:
884 {
885 if (htab->root.splt != NULL && h != NULL
886 && h->plt.offset != (bfd_vma) -1)
887 {
888 relocation = (htab->root.splt->output_section->vma
889 + htab->root.splt->output_offset
890 + h->plt.offset);
891 }
892 break;
893 }
894
895 case R_OR1K_GOT16:
896 /* Relocation is to the entry for this symbol in the global
897 offset table. */
898 BFD_ASSERT (sgot != NULL);
899 if (h != NULL)
900 {
901 bfd_boolean dyn;
902 bfd_vma off;
903
904 off = h->got.offset;
905 BFD_ASSERT (off != (bfd_vma) -1);
906
907 dyn = htab->root.dynamic_sections_created;
908 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
909 bfd_link_pic (info),
910 h)
911 || (bfd_link_pic (info)
912 && SYMBOL_REFERENCES_LOCAL (info, h)))
913 {
914 /* This is actually a static link, or it is a
915 -Bsymbolic link and the symbol is defined
916 locally, or the symbol was forced to be local
917 because of a version file. We must initialize
918 this entry in the global offset table. Since the
919 offset must always be a multiple of 4, we use the
920 least significant bit to record whether we have
921 initialized it already.
922
923 When doing a dynamic link, we create a .rela.got
924 relocation entry to initialize the value. This
925 is done in the finish_dynamic_symbol routine. */
926 if ((off & 1) != 0)
927 off &= ~1;
928 else
929 {
930 /* Write entry in GOT. */
931 bfd_put_32 (output_bfd, relocation,
932 sgot->contents + off);
933 /* Mark GOT entry as having been written. */
934 h->got.offset |= 1;
935 }
936 }
937
938 relocation = sgot->output_offset + off;
939 }
940 else
941 {
942 bfd_vma off;
943 bfd_byte *loc;
944
945 BFD_ASSERT (local_got_offsets != NULL
946 && local_got_offsets[r_symndx] != (bfd_vma) -1);
947
948 /* Get offset into GOT table. */
949 off = local_got_offsets[r_symndx];
950
951 /* The offset must always be a multiple of 4. We use
952 the least significant bit to record whether we have
953 already processed this entry. */
954 if ((off & 1) != 0)
955 off &= ~1;
956 else
957 {
958 /* Write entry in GOT. */
959 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
960 if (bfd_link_pic (info))
961 {
962 asection *srelgot;
963 Elf_Internal_Rela outrel;
964
965 /* We need to generate a R_OR1K_RELATIVE reloc
966 for the dynamic linker. */
967 srelgot = htab->root.srelgot;
968 BFD_ASSERT (srelgot != NULL);
969
970 outrel.r_offset = (sgot->output_section->vma
971 + sgot->output_offset
972 + off);
973 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
974 outrel.r_addend = relocation;
975 loc = srelgot->contents;
976 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
977 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
978 ++srelgot->reloc_count;
979 }
980
981 local_got_offsets[r_symndx] |= 1;
982 }
983 relocation = sgot->output_offset + off;
984 }
985
986 /* Addend should be zero. */
987 if (rel->r_addend != 0)
988 _bfd_error_handler
989 (_("internal error: addend should be zero for R_OR1K_GOT16"));
990
991 break;
992
993 case R_OR1K_GOTOFF_LO16:
994 case R_OR1K_GOTOFF_HI16:
995 /* Relocation is offset from GOT. */
996 BFD_ASSERT (sgot != NULL);
997 relocation
998 -= (htab->root.hgot->root.u.def.value
999 + htab->root.hgot->root.u.def.section->output_offset
1000 + htab->root.hgot->root.u.def.section->output_section->vma);
1001 break;
1002
1003 case R_OR1K_INSN_REL_26:
1004 case R_OR1K_HI_16_IN_INSN:
1005 case R_OR1K_LO_16_IN_INSN:
1006 case R_OR1K_32:
1007 /* R_OR1K_16? */
1008 {
1009 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1010 from removed linkonce sections, or sections discarded by
1011 a linker script. */
1012 if (r_symndx == STN_UNDEF
1013 || (input_section->flags & SEC_ALLOC) == 0)
1014 break;
1015
1016 if ((bfd_link_pic (info)
1017 && (h == NULL
1018 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1019 || h->root.type != bfd_link_hash_undefweak)
1020 && (howto->type != R_OR1K_INSN_REL_26
1021 || !SYMBOL_CALLS_LOCAL (info, h)))
1022 || (!bfd_link_pic (info)
1023 && h != NULL
1024 && h->dynindx != -1
1025 && !h->non_got_ref
1026 && ((h->def_dynamic
1027 && !h->def_regular)
1028 || h->root.type == bfd_link_hash_undefweak
1029 || h->root.type == bfd_link_hash_undefined)))
1030 {
1031 Elf_Internal_Rela outrel;
1032 bfd_byte *loc;
1033 bfd_boolean skip;
1034
1035 /* When generating a shared object, these relocations
1036 are copied into the output file to be resolved at run
1037 time. */
1038
1039 BFD_ASSERT (sreloc != NULL);
1040
1041 skip = FALSE;
1042
1043 outrel.r_offset =
1044 _bfd_elf_section_offset (output_bfd, info, input_section,
1045 rel->r_offset);
1046 if (outrel.r_offset == (bfd_vma) -1)
1047 skip = TRUE;
1048 else if (outrel.r_offset == (bfd_vma) -2)
1049 skip = TRUE;
1050 outrel.r_offset += (input_section->output_section->vma
1051 + input_section->output_offset);
1052
1053 if (skip)
1054 memset (&outrel, 0, sizeof outrel);
1055 /* h->dynindx may be -1 if the symbol was marked to
1056 become local. */
1057 else if (h != NULL
1058 && ((! info->symbolic && h->dynindx != -1)
1059 || !h->def_regular))
1060 {
1061 BFD_ASSERT (h->dynindx != -1);
1062 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1063 outrel.r_addend = rel->r_addend;
1064 }
1065 else
1066 {
1067 if (r_type == R_OR1K_32)
1068 {
1069 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1070 outrel.r_addend = relocation + rel->r_addend;
1071 }
1072 else
1073 {
1074 BFD_FAIL ();
1075 _bfd_error_handler
1076 (_("%B: probably compiled without -fPIC?"),
1077 input_bfd);
1078 bfd_set_error (bfd_error_bad_value);
1079 return FALSE;
1080 }
1081 }
1082
1083 loc = sreloc->contents;
1084 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1085 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1086 break;
1087 }
1088 break;
1089 }
1090
1091 case R_OR1K_TLS_LDM_HI16:
1092 case R_OR1K_TLS_LDM_LO16:
1093 case R_OR1K_TLS_LDO_HI16:
1094 case R_OR1K_TLS_LDO_LO16:
1095 /* TODO: implement support for local dynamic. */
1096 BFD_FAIL ();
1097 _bfd_error_handler
1098 (_("%B: support for local dynamic not implemented"),
1099 input_bfd);
1100 bfd_set_error (bfd_error_bad_value);
1101 return FALSE;
1102
1103
1104 case R_OR1K_TLS_GD_HI16:
1105 case R_OR1K_TLS_GD_LO16:
1106 case R_OR1K_TLS_IE_HI16:
1107 case R_OR1K_TLS_IE_LO16:
1108 {
1109 bfd_vma gotoff;
1110 Elf_Internal_Rela rela;
1111 bfd_byte *loc;
1112 int dynamic;
1113
1114 sreloc = bfd_get_section_by_name (dynobj, ".rela.got");
1115
1116 /* Mark as TLS related GOT entry by setting
1117 bit 2 as well as bit 1. */
1118 if (h != NULL)
1119 {
1120 gotoff = h->got.offset;
1121 h->got.offset |= 3;
1122 }
1123 else
1124 {
1125 gotoff = local_got_offsets[r_symndx];
1126 local_got_offsets[r_symndx] |= 3;
1127 }
1128
1129 /* Only process the relocation once. */
1130 if (gotoff & 1)
1131 {
1132 relocation = sgot->output_offset + (gotoff & ~3);
1133 break;
1134 }
1135
1136 BFD_ASSERT (elf_hash_table (info)->hgot == NULL
1137 || elf_hash_table (info)->hgot->root.u.def.value == 0);
1138
1139 /* Dynamic entries will require relocations. if we do not need
1140 them we will just use the default R_OR1K_NONE and
1141 not set anything. */
1142 dynamic = bfd_link_pic (info)
1143 || (sec && (sec->flags & SEC_ALLOC) != 0
1144 && h != NULL
1145 && (h->root.type == bfd_link_hash_defweak || !h->def_regular));
1146
1147 /* Shared GD. */
1148 if (dynamic && (howto->type == R_OR1K_TLS_GD_HI16
1149 || howto->type == R_OR1K_TLS_GD_LO16))
1150 {
1151 int i;
1152
1153 /* Add DTPMOD and DTPOFF GOT and rela entries. */
1154 for (i = 0; i < 2; ++i)
1155 {
1156 rela.r_offset = sgot->output_section->vma +
1157 sgot->output_offset + gotoff + i*4;
1158 if (h != NULL && h->dynindx != -1)
1159 {
1160 rela.r_info = ELF32_R_INFO (h->dynindx,
1161 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1162 rela.r_addend = 0;
1163 }
1164 else
1165 {
1166 rela.r_info = ELF32_R_INFO (0,
1167 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1168 rela.r_addend = tpoff (info, relocation);
1169 }
1170
1171 loc = sreloc->contents;
1172 loc += sreloc->reloc_count++ *
1173 sizeof (Elf32_External_Rela);
1174
1175 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1176 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff + i*4);
1177 }
1178 }
1179 /* Static GD. */
1180 else if (howto->type == R_OR1K_TLS_GD_HI16
1181 || howto->type == R_OR1K_TLS_GD_LO16)
1182 {
1183 bfd_put_32 (output_bfd, 1, sgot->contents + gotoff);
1184 bfd_put_32 (output_bfd, tpoff (info, relocation),
1185 sgot->contents + gotoff + 4);
1186 }
1187 /* Shared IE. */
1188 else if (dynamic)
1189 {
1190 /* Add TPOFF GOT and rela entries. */
1191 rela.r_offset = sgot->output_section->vma +
1192 sgot->output_offset + gotoff;
1193 if (h != NULL && h->dynindx != -1)
1194 {
1195 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_TLS_TPOFF);
1196 rela.r_addend = 0;
1197 }
1198 else
1199 {
1200 rela.r_info = ELF32_R_INFO (0, R_OR1K_TLS_TPOFF);
1201 rela.r_addend = tpoff (info, relocation);
1202 }
1203
1204 loc = sreloc->contents;
1205 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1206
1207 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1208 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff);
1209 }
1210 /* Static IE. */
1211 else
1212 {
1213 bfd_put_32 (output_bfd, tpoff (info, relocation),
1214 sgot->contents + gotoff);
1215 }
1216 relocation = sgot->output_offset + gotoff;
1217 break;
1218 }
1219 case R_OR1K_TLS_LE_HI16:
1220 case R_OR1K_TLS_LE_LO16:
1221
1222 /* Relocation is offset from TP. */
1223 relocation = tpoff (info, relocation);
1224 break;
1225
1226 case R_OR1K_TLS_DTPMOD:
1227 case R_OR1K_TLS_DTPOFF:
1228 case R_OR1K_TLS_TPOFF:
1229 /* These are resolved dynamically on load and shouldn't
1230 be used as linker input. */
1231 BFD_FAIL ();
1232 _bfd_error_handler
1233 (_("%B: will not resolve runtime TLS relocation"),
1234 input_bfd);
1235 bfd_set_error (bfd_error_bad_value);
1236 return FALSE;
1237
1238 default:
1239 break;
1240 }
1241 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
1242 rel->r_offset, relocation, rel->r_addend);
1243
1244 if (r != bfd_reloc_ok)
1245 {
1246 const char *msg = NULL;
1247
1248 switch (r)
1249 {
1250 case bfd_reloc_overflow:
1251 (*info->callbacks->reloc_overflow)
1252 (info, (h ? &h->root : NULL), name, howto->name,
1253 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1254 break;
1255
1256 case bfd_reloc_undefined:
1257 (*info->callbacks->undefined_symbol)
1258 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
1259 break;
1260
1261 case bfd_reloc_outofrange:
1262 msg = _("internal error: out of range error");
1263 break;
1264
1265 case bfd_reloc_notsupported:
1266 msg = _("internal error: unsupported relocation error");
1267 break;
1268
1269 case bfd_reloc_dangerous:
1270 msg = _("internal error: dangerous relocation");
1271 break;
1272
1273 default:
1274 msg = _("internal error: unknown error");
1275 break;
1276 }
1277
1278 if (msg)
1279 (*info->callbacks->warning) (info, msg, name, input_bfd,
1280 input_section, rel->r_offset);
1281 }
1282 }
1283
1284 return TRUE;
1285 }
1286
1287 /* Return the section that should be marked against GC for a given
1288 relocation. */
1289
1290 static asection *
1291 or1k_elf_gc_mark_hook (asection *sec,
1292 struct bfd_link_info *info,
1293 Elf_Internal_Rela *rel,
1294 struct elf_link_hash_entry *h,
1295 Elf_Internal_Sym *sym)
1296 {
1297 if (h != NULL)
1298 switch (ELF32_R_TYPE (rel->r_info))
1299 {
1300 case R_OR1K_GNU_VTINHERIT:
1301 case R_OR1K_GNU_VTENTRY:
1302 return NULL;
1303 }
1304
1305 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1306 }
1307
1308 static bfd_boolean
1309 or1k_elf_gc_sweep_hook (bfd *abfd,
1310 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1311 asection *sec,
1312 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1313 {
1314 /* Update the got entry reference counts for the section being removed. */
1315 Elf_Internal_Shdr *symtab_hdr;
1316 struct elf_link_hash_entry **sym_hashes;
1317 bfd_signed_vma *local_got_refcounts;
1318 const Elf_Internal_Rela *rel, *relend;
1319
1320 elf_section_data (sec)->local_dynrel = NULL;
1321
1322 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1323 sym_hashes = elf_sym_hashes (abfd);
1324 local_got_refcounts = elf_local_got_refcounts (abfd);
1325
1326 relend = relocs + sec->reloc_count;
1327 for (rel = relocs; rel < relend; rel++)
1328 {
1329 unsigned long r_symndx;
1330 struct elf_link_hash_entry *h = NULL;
1331
1332 r_symndx = ELF32_R_SYM (rel->r_info);
1333 if (r_symndx >= symtab_hdr->sh_info)
1334 {
1335 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1336 while (h->root.type == bfd_link_hash_indirect
1337 || h->root.type == bfd_link_hash_warning)
1338 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1339 }
1340
1341 switch (ELF32_R_TYPE (rel->r_info))
1342 {
1343 case R_OR1K_GOT16:
1344 if (h != NULL)
1345 {
1346 if (h->got.refcount > 0)
1347 h->got.refcount--;
1348 }
1349 else
1350 {
1351 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
1352 local_got_refcounts[r_symndx]--;
1353 }
1354 break;
1355
1356 default:
1357 break;
1358 }
1359 }
1360 return TRUE;
1361 }
1362
1363 /* Look through the relocs for a section during the first phase. */
1364
1365 static bfd_boolean
1366 or1k_elf_check_relocs (bfd *abfd,
1367 struct bfd_link_info *info,
1368 asection *sec,
1369 const Elf_Internal_Rela *relocs)
1370 {
1371 Elf_Internal_Shdr *symtab_hdr;
1372 struct elf_link_hash_entry **sym_hashes;
1373 const Elf_Internal_Rela *rel;
1374
1375 const Elf_Internal_Rela *rel_end;
1376 struct elf_or1k_link_hash_table *htab;
1377 bfd *dynobj;
1378 asection *sreloc = NULL;
1379
1380 if (bfd_link_relocatable (info))
1381 return TRUE;
1382
1383 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1384 sym_hashes = elf_sym_hashes (abfd);
1385
1386 htab = or1k_elf_hash_table (info);
1387 if (htab == NULL)
1388 return FALSE;
1389
1390 dynobj = htab->root.dynobj;
1391
1392 rel_end = relocs + sec->reloc_count;
1393 for (rel = relocs; rel < rel_end; rel++)
1394 {
1395 struct elf_link_hash_entry *h;
1396 unsigned long r_symndx;
1397 unsigned char tls_type;
1398
1399 r_symndx = ELF32_R_SYM (rel->r_info);
1400 if (r_symndx < symtab_hdr->sh_info)
1401 h = NULL;
1402 else
1403 {
1404 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1405 while (h->root.type == bfd_link_hash_indirect
1406 || h->root.type == bfd_link_hash_warning)
1407 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1408
1409 /* PR15323, ref flags aren't set for references in the same
1410 object. */
1411 h->root.non_ir_ref = 1;
1412 }
1413
1414 switch (ELF32_R_TYPE (rel->r_info))
1415 {
1416 case R_OR1K_TLS_GD_HI16:
1417 case R_OR1K_TLS_GD_LO16:
1418 tls_type = TLS_GD;
1419 break;
1420 case R_OR1K_TLS_LDM_HI16:
1421 case R_OR1K_TLS_LDM_LO16:
1422 case R_OR1K_TLS_LDO_HI16:
1423 case R_OR1K_TLS_LDO_LO16:
1424 tls_type = TLS_LD;
1425 break;
1426 case R_OR1K_TLS_IE_HI16:
1427 case R_OR1K_TLS_IE_LO16:
1428 tls_type = TLS_IE;
1429 break;
1430 case R_OR1K_TLS_LE_HI16:
1431 case R_OR1K_TLS_LE_LO16:
1432 tls_type = TLS_LE;
1433 break;
1434 default:
1435 tls_type = TLS_NONE;
1436 }
1437
1438 /* Record TLS type. */
1439 if (h != NULL)
1440 ((struct elf_or1k_link_hash_entry *) h)->tls_type = tls_type;
1441 else
1442 {
1443 unsigned char *local_tls_type;
1444
1445 /* This is a TLS type record for a local symbol. */
1446 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (abfd);
1447 if (local_tls_type == NULL)
1448 {
1449 bfd_size_type size;
1450
1451 size = symtab_hdr->sh_info;
1452 local_tls_type = bfd_zalloc (abfd, size);
1453 if (local_tls_type == NULL)
1454 return FALSE;
1455 elf_or1k_local_tls_type (abfd) = local_tls_type;
1456 }
1457 local_tls_type[r_symndx] = tls_type;
1458 }
1459
1460 switch (ELF32_R_TYPE (rel->r_info))
1461 {
1462 /* This relocation describes the C++ object vtable hierarchy.
1463 Reconstruct it for later use during GC. */
1464 case R_OR1K_GNU_VTINHERIT:
1465 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1466 return FALSE;
1467 break;
1468
1469 /* This relocation describes which C++ vtable entries are actually
1470 used. Record for later use during GC. */
1471 case R_OR1K_GNU_VTENTRY:
1472 BFD_ASSERT (h != NULL);
1473 if (h != NULL
1474 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1475 return FALSE;
1476 break;
1477
1478 /* This relocation requires .plt entry. */
1479 case R_OR1K_PLT26:
1480 if (h != NULL)
1481 {
1482 h->needs_plt = 1;
1483 h->plt.refcount += 1;
1484 }
1485 break;
1486
1487 case R_OR1K_GOT16:
1488 case R_OR1K_GOTOFF_HI16:
1489 case R_OR1K_GOTOFF_LO16:
1490 case R_OR1K_TLS_GD_HI16:
1491 case R_OR1K_TLS_GD_LO16:
1492 case R_OR1K_TLS_IE_HI16:
1493 case R_OR1K_TLS_IE_LO16:
1494 if (htab->root.sgot == NULL)
1495 {
1496 if (dynobj == NULL)
1497 htab->root.dynobj = dynobj = abfd;
1498 if (!_bfd_elf_create_got_section (dynobj, info))
1499 return FALSE;
1500 }
1501
1502 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_HI16 &&
1503 ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_LO16)
1504 {
1505 if (h != NULL)
1506 h->got.refcount += 1;
1507 else
1508 {
1509 bfd_signed_vma *local_got_refcounts;
1510
1511 /* This is a global offset table entry for a local symbol. */
1512 local_got_refcounts = elf_local_got_refcounts (abfd);
1513 if (local_got_refcounts == NULL)
1514 {
1515 bfd_size_type size;
1516
1517 size = symtab_hdr->sh_info;
1518 size *= sizeof (bfd_signed_vma);
1519 local_got_refcounts = bfd_zalloc (abfd, size);
1520 if (local_got_refcounts == NULL)
1521 return FALSE;
1522 elf_local_got_refcounts (abfd) = local_got_refcounts;
1523 }
1524 local_got_refcounts[r_symndx] += 1;
1525 }
1526 }
1527 break;
1528
1529 case R_OR1K_INSN_REL_26:
1530 case R_OR1K_HI_16_IN_INSN:
1531 case R_OR1K_LO_16_IN_INSN:
1532 case R_OR1K_32:
1533 /* R_OR1K_16? */
1534 {
1535 if (h != NULL && !bfd_link_pic (info))
1536 {
1537 /* We may need a copy reloc. */
1538 h->non_got_ref = 1;
1539
1540 /* We may also need a .plt entry. */
1541 h->plt.refcount += 1;
1542 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26)
1543 h->pointer_equality_needed = 1;
1544 }
1545
1546 /* If we are creating a shared library, and this is a reloc
1547 against a global symbol, or a non PC relative reloc
1548 against a local symbol, then we need to copy the reloc
1549 into the shared library. However, if we are linking with
1550 -Bsymbolic, we do not need to copy a reloc against a
1551 global symbol which is defined in an object we are
1552 including in the link (i.e., DEF_REGULAR is set). At
1553 this point we have not seen all the input files, so it is
1554 possible that DEF_REGULAR is not set now but will be set
1555 later (it is never cleared). In case of a weak definition,
1556 DEF_REGULAR may be cleared later by a strong definition in
1557 a shared library. We account for that possibility below by
1558 storing information in the relocs_copied field of the hash
1559 table entry. A similar situation occurs when creating
1560 shared libraries and symbol visibility changes render the
1561 symbol local.
1562
1563 If on the other hand, we are creating an executable, we
1564 may need to keep relocations for symbols satisfied by a
1565 dynamic library if we manage to avoid copy relocs for the
1566 symbol. */
1567
1568 if ((bfd_link_pic (info)
1569 && (sec->flags & SEC_ALLOC) != 0
1570 && (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26
1571 || (h != NULL
1572 && (!SYMBOLIC_BIND (info, h)
1573 || h->root.type == bfd_link_hash_defweak
1574 || !h->def_regular))))
1575 || (!bfd_link_pic (info)
1576 && (sec->flags & SEC_ALLOC) != 0
1577 && h != NULL
1578 && (h->root.type == bfd_link_hash_defweak
1579 || !h->def_regular)))
1580 {
1581 struct elf_or1k_dyn_relocs *p;
1582 struct elf_or1k_dyn_relocs **head;
1583
1584 /* When creating a shared object, we must copy these
1585 relocs into the output file. We create a reloc
1586 section in dynobj and make room for the reloc. */
1587 if (sreloc == NULL)
1588 {
1589 const char *name;
1590 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1591 unsigned int shnam = _bfd_elf_single_rel_hdr (sec)->sh_name;
1592
1593 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
1594 if (name == NULL)
1595 return FALSE;
1596
1597 if (strncmp (name, ".rela", 5) != 0
1598 || strcmp (bfd_get_section_name (abfd, sec),
1599 name + 5) != 0)
1600 {
1601 _bfd_error_handler
1602 /* xgettext:c-format */
1603 (_("%B: bad relocation section name `%s\'"),
1604 abfd, name);
1605 }
1606
1607 if (htab->root.dynobj == NULL)
1608 htab->root.dynobj = abfd;
1609 dynobj = htab->root.dynobj;
1610
1611 sreloc = bfd_get_section_by_name (dynobj, name);
1612 if (sreloc == NULL)
1613 {
1614 sreloc = _bfd_elf_make_dynamic_reloc_section
1615 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
1616
1617 if (sreloc == NULL)
1618 return FALSE;
1619 }
1620 elf_section_data (sec)->sreloc = sreloc;
1621 }
1622
1623 /* If this is a global symbol, we count the number of
1624 relocations we need for this symbol. */
1625 if (h != NULL)
1626 head = &((struct elf_or1k_link_hash_entry *) h)->dyn_relocs;
1627 else
1628 {
1629 /* Track dynamic relocs needed for local syms too.
1630 We really need local syms available to do this
1631 easily. Oh well. */
1632
1633 asection *s;
1634 Elf_Internal_Sym *isym;
1635 void *vpp;
1636
1637 isym = bfd_sym_from_r_symndx (&htab->sym_sec,
1638 abfd, r_symndx);
1639 if (isym == NULL)
1640 return FALSE;
1641
1642 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1643 if (s == NULL)
1644 return FALSE;
1645
1646 vpp = &elf_section_data (s)->local_dynrel;
1647 head = (struct elf_or1k_dyn_relocs **) vpp;
1648 }
1649
1650 p = *head;
1651 if (p == NULL || p->sec != sec)
1652 {
1653 bfd_size_type amt = sizeof *p;
1654 p = ((struct elf_or1k_dyn_relocs *)
1655 bfd_alloc (htab->root.dynobj, amt));
1656 if (p == NULL)
1657 return FALSE;
1658 p->next = *head;
1659 *head = p;
1660 p->sec = sec;
1661 p->count = 0;
1662 p->pc_count = 0;
1663 }
1664
1665 p->count += 1;
1666 if (ELF32_R_TYPE (rel->r_info) == R_OR1K_INSN_REL_26)
1667 p->pc_count += 1;
1668 }
1669 }
1670 break;
1671 }
1672 }
1673
1674 return TRUE;
1675 }
1676
1677 /* Finish up the dynamic sections. */
1678
1679 static bfd_boolean
1680 or1k_elf_finish_dynamic_sections (bfd *output_bfd,
1681 struct bfd_link_info *info)
1682 {
1683 bfd *dynobj;
1684 asection *sdyn, *sgot;
1685 struct elf_or1k_link_hash_table *htab;
1686
1687 htab = or1k_elf_hash_table (info);
1688 if (htab == NULL)
1689 return FALSE;
1690
1691 dynobj = htab->root.dynobj;
1692
1693 sgot = htab->root.sgotplt;
1694 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1695
1696 if (htab->root.dynamic_sections_created)
1697 {
1698 asection *splt;
1699 Elf32_External_Dyn *dyncon, *dynconend;
1700
1701 BFD_ASSERT (sgot != NULL && sdyn != NULL);
1702
1703 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1704 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1705
1706 for (; dyncon < dynconend; dyncon++)
1707 {
1708 Elf_Internal_Dyn dyn;
1709 asection *s;
1710
1711 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1712
1713 switch (dyn.d_tag)
1714 {
1715 default:
1716 continue;
1717
1718 case DT_PLTGOT:
1719 s = htab->root.sgotplt;
1720 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
1721 break;
1722
1723 case DT_JMPREL:
1724 s = htab->root.srelplt;
1725 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
1726 break;
1727
1728 case DT_PLTRELSZ:
1729 s = htab->root.srelplt;
1730 dyn.d_un.d_val = s->size;
1731 break;
1732 }
1733 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1734 }
1735
1736
1737 /* Fill in the first entry in the procedure linkage table. */
1738 splt = htab->root.splt;
1739 if (splt && splt->size > 0)
1740 {
1741 if (bfd_link_pic (info))
1742 {
1743 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0,
1744 splt->contents);
1745 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1,
1746 splt->contents + 4);
1747 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2,
1748 splt->contents + 8);
1749 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3,
1750 splt->contents + 12);
1751 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4,
1752 splt->contents + 16);
1753 }
1754 else
1755 {
1756 unsigned long addr;
1757 /* addr = .got + 4 */
1758 addr = sgot->output_section->vma + sgot->output_offset + 4;
1759 bfd_put_32 (output_bfd,
1760 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1761 splt->contents);
1762 bfd_put_32 (output_bfd,
1763 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1764 splt->contents + 4);
1765 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1766 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1767 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1768 }
1769
1770 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
1771 }
1772 }
1773
1774 /* Set the first entry in the global offset table to the address of
1775 the dynamic section. */
1776 if (sgot && sgot->size > 0)
1777 {
1778 if (sdyn == NULL)
1779 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1780 else
1781 bfd_put_32 (output_bfd,
1782 sdyn->output_section->vma + sdyn->output_offset,
1783 sgot->contents);
1784 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1785 }
1786
1787 if (htab->root.sgot && htab->root.sgot->size > 0)
1788 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize = 4;
1789
1790 return TRUE;
1791 }
1792
1793 /* Finish up dynamic symbol handling. We set the contents of various
1794 dynamic sections here. */
1795
1796 static bfd_boolean
1797 or1k_elf_finish_dynamic_symbol (bfd *output_bfd,
1798 struct bfd_link_info *info,
1799 struct elf_link_hash_entry *h,
1800 Elf_Internal_Sym *sym)
1801 {
1802 struct elf_or1k_link_hash_table *htab;
1803 bfd_byte *loc;
1804
1805 htab = or1k_elf_hash_table (info);
1806 if (htab == NULL)
1807 return FALSE;
1808
1809 if (h->plt.offset != (bfd_vma) -1)
1810 {
1811 asection *splt;
1812 asection *sgot;
1813 asection *srela;
1814
1815 bfd_vma plt_index;
1816 bfd_vma got_offset;
1817 bfd_vma got_addr;
1818 Elf_Internal_Rela rela;
1819
1820 /* This symbol has an entry in the procedure linkage table. Set
1821 it up. */
1822 BFD_ASSERT (h->dynindx != -1);
1823
1824 splt = htab->root.splt;
1825 sgot = htab->root.sgotplt;
1826 srela = htab->root.srelplt;
1827 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1828
1829 /* Get the index in the procedure linkage table which
1830 corresponds to this symbol. This is the index of this symbol
1831 in all the symbols for which we are making plt entries. The
1832 first entry in the procedure linkage table is reserved. */
1833 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1834
1835 /* Get the offset into the .got table of the entry that
1836 corresponds to this function. Each .got entry is 4 bytes.
1837 The first three are reserved. */
1838 got_offset = (plt_index + 3) * 4;
1839 got_addr = got_offset;
1840
1841 /* Fill in the entry in the procedure linkage table. */
1842 if (! bfd_link_pic (info))
1843 {
1844 got_addr += htab->root.sgotplt->output_section->vma
1845 + htab->root.sgotplt->output_offset;
1846 bfd_put_32 (output_bfd, PLT_ENTRY_WORD0 | ((got_addr >> 16) & 0xffff),
1847 splt->contents + h->plt.offset);
1848 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1 | (got_addr & 0xffff),
1849 splt->contents + h->plt.offset + 4);
1850 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
1851 splt->contents + h->plt.offset + 8);
1852 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
1853 splt->contents + h->plt.offset + 12);
1854 bfd_put_32 (output_bfd, PLT_ENTRY_WORD4
1855 | plt_index * sizeof (Elf32_External_Rela),
1856 splt->contents + h->plt.offset + 16);
1857 }
1858 else
1859 {
1860 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD0 | (got_addr & 0xffff),
1861 splt->contents + h->plt.offset);
1862 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD1
1863 | plt_index * sizeof (Elf32_External_Rela),
1864 splt->contents + h->plt.offset + 4);
1865 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
1866 splt->contents + h->plt.offset + 8);
1867 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
1868 splt->contents + h->plt.offset + 12);
1869 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
1870 splt->contents + h->plt.offset + 16);
1871 }
1872
1873 /* Fill in the entry in the global offset table. */
1874 bfd_put_32 (output_bfd,
1875 (splt->output_section->vma
1876 + splt->output_offset), /* Same offset. */
1877 sgot->contents + got_offset);
1878
1879 /* Fill in the entry in the .rela.plt section. */
1880 rela.r_offset = (sgot->output_section->vma
1881 + sgot->output_offset
1882 + got_offset);
1883 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT);
1884 rela.r_addend = 0;
1885 loc = srela->contents;
1886 loc += plt_index * sizeof (Elf32_External_Rela);
1887 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1888
1889 if (!h->def_regular)
1890 {
1891 /* Mark the symbol as undefined, rather than as defined in
1892 the .plt section. Leave the value alone. */
1893 sym->st_shndx = SHN_UNDEF;
1894 }
1895
1896 }
1897
1898 if (h->got.offset != (bfd_vma) -1
1899 && (h->got.offset & 2) == 0) /* Homemade TLS check. */
1900 {
1901 asection *sgot;
1902 asection *srela;
1903 Elf_Internal_Rela rela;
1904
1905 /* This symbol has an entry in the global offset table. Set it
1906 up. */
1907 sgot = htab->root.sgot;
1908 srela = htab->root.srelgot;
1909 BFD_ASSERT (sgot != NULL && srela != NULL);
1910
1911 rela.r_offset = (sgot->output_section->vma
1912 + sgot->output_offset
1913 + (h->got.offset &~ 1));
1914
1915 /* If this is a -Bsymbolic link, and the symbol is defined
1916 locally, we just want to emit a RELATIVE reloc. Likewise if
1917 the symbol was forced to be local because of a version file.
1918 The entry in the global offset table will already have been
1919 initialized in the relocate_section function. */
1920 if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
1921 {
1922 rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1923 rela.r_addend = (h->root.u.def.value
1924 + h->root.u.def.section->output_section->vma
1925 + h->root.u.def.section->output_offset);
1926 }
1927 else
1928 {
1929 BFD_ASSERT ((h->got.offset & 1) == 0);
1930 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
1931 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT);
1932 rela.r_addend = 0;
1933 }
1934
1935 loc = srela->contents;
1936 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
1937 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1938 ++srela->reloc_count;
1939 }
1940
1941 if (h->needs_copy)
1942 {
1943 asection *s;
1944 Elf_Internal_Rela rela;
1945
1946 /* This symbols needs a copy reloc. Set it up. */
1947 BFD_ASSERT (h->dynindx != -1
1948 && (h->root.type == bfd_link_hash_defined
1949 || h->root.type == bfd_link_hash_defweak));
1950
1951 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1952 ".rela.bss");
1953 BFD_ASSERT (s != NULL);
1954
1955 rela.r_offset = (h->root.u.def.value
1956 + h->root.u.def.section->output_section->vma
1957 + h->root.u.def.section->output_offset);
1958 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY);
1959 rela.r_addend = 0;
1960 loc = s->contents;
1961 loc += s->reloc_count * sizeof (Elf32_External_Rela);
1962 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1963 ++s->reloc_count;
1964 }
1965
1966 /* Mark some specially defined symbols as absolute. */
1967 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1968 || h == htab->root.hgot)
1969 sym->st_shndx = SHN_ABS;
1970
1971 return TRUE;
1972 }
1973
1974 static enum elf_reloc_type_class
1975 or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
1976 const asection *rel_sec ATTRIBUTE_UNUSED,
1977 const Elf_Internal_Rela *rela)
1978 {
1979 switch ((int) ELF32_R_TYPE (rela->r_info))
1980 {
1981 case R_OR1K_RELATIVE: return reloc_class_relative;
1982 case R_OR1K_JMP_SLOT: return reloc_class_plt;
1983 case R_OR1K_COPY: return reloc_class_copy;
1984 default: return reloc_class_normal;
1985 }
1986 }
1987
1988 /* Adjust a symbol defined by a dynamic object and referenced by a
1989 regular object. The current definition is in some section of the
1990 dynamic object, but we're not including those sections. We have to
1991 change the definition to something the rest of the link can
1992 understand. */
1993
1994 static bfd_boolean
1995 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1996 struct elf_link_hash_entry *h)
1997 {
1998 struct elf_or1k_link_hash_table *htab;
1999 struct elf_or1k_link_hash_entry *eh;
2000 struct elf_or1k_dyn_relocs *p;
2001 bfd *dynobj;
2002 asection *s;
2003
2004 dynobj = elf_hash_table (info)->dynobj;
2005
2006 /* Make sure we know what is going on here. */
2007 BFD_ASSERT (dynobj != NULL
2008 && (h->needs_plt
2009 || h->u.weakdef != NULL
2010 || (h->def_dynamic
2011 && h->ref_regular
2012 && !h->def_regular)));
2013
2014 /* If this is a function, put it in the procedure linkage table. We
2015 will fill in the contents of the procedure linkage table later,
2016 when we know the address of the .got section. */
2017 if (h->type == STT_FUNC
2018 || h->needs_plt)
2019 {
2020 if (! bfd_link_pic (info)
2021 && !h->def_dynamic
2022 && !h->ref_dynamic
2023 && h->root.type != bfd_link_hash_undefweak
2024 && h->root.type != bfd_link_hash_undefined)
2025 {
2026 /* This case can occur if we saw a PLT reloc in an input
2027 file, but the symbol was never referred to by a dynamic
2028 object. In such a case, we don't actually need to build
2029 a procedure linkage table, and we can just do a PCREL
2030 reloc instead. */
2031 h->plt.offset = (bfd_vma) -1;
2032 h->needs_plt = 0;
2033 }
2034
2035 return TRUE;
2036 }
2037 else
2038 h->plt.offset = (bfd_vma) -1;
2039
2040 /* If this is a weak symbol, and there is a real definition, the
2041 processor independent code will have arranged for us to see the
2042 real definition first, and we can just use the same value. */
2043 if (h->u.weakdef != NULL)
2044 {
2045 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2046 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2047 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2048 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2049 return TRUE;
2050 }
2051
2052 /* This is a reference to a symbol defined by a dynamic object which
2053 is not a function. */
2054
2055 /* If we are creating a shared library, we must presume that the
2056 only references to the symbol are via the global offset table.
2057 For such cases we need not do anything here; the relocations will
2058 be handled correctly by relocate_section. */
2059 if (bfd_link_pic (info))
2060 return TRUE;
2061
2062 /* If there are no references to this symbol that do not use the
2063 GOT, we don't need to generate a copy reloc. */
2064 if (!h->non_got_ref)
2065 return TRUE;
2066
2067 /* If -z nocopyreloc was given, we won't generate them either. */
2068 if (info->nocopyreloc)
2069 {
2070 h->non_got_ref = 0;
2071 return TRUE;
2072 }
2073
2074 eh = (struct elf_or1k_link_hash_entry *) h;
2075 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2076 {
2077 s = p->sec->output_section;
2078 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2079 break;
2080 }
2081
2082 /* If we didn't find any dynamic relocs in sections which needs the
2083 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2084 the copy reloc. */
2085 if (p == NULL)
2086 {
2087 h->non_got_ref = 0;
2088 return TRUE;
2089 }
2090
2091 /* We must allocate the symbol in our .dynbss section, which will
2092 become part of the .bss section of the executable. There will be
2093 an entry for this symbol in the .dynsym section. The dynamic
2094 object will contain position independent code, so all references
2095 from the dynamic object to this symbol will go through the global
2096 offset table. The dynamic linker will use the .dynsym entry to
2097 determine the address it must put in the global offset table, so
2098 both the dynamic object and the regular object will refer to the
2099 same memory location for the variable. */
2100
2101 htab = or1k_elf_hash_table (info);
2102 if (htab == NULL)
2103 return FALSE;
2104
2105 s = htab->sdynbss;
2106 BFD_ASSERT (s != NULL);
2107
2108 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2109 to copy the initial value out of the dynamic object and into the
2110 runtime process image. We need to remember the offset into the
2111 .rela.bss section we are going to use. */
2112 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2113 {
2114 asection *srel;
2115
2116 srel = htab->srelbss;
2117 BFD_ASSERT (srel != NULL);
2118 srel->size += sizeof (Elf32_External_Rela);
2119 h->needs_copy = 1;
2120 }
2121
2122 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2123 }
2124
2125 /* Allocate space in .plt, .got and associated reloc sections for
2126 dynamic relocs. */
2127
2128 static bfd_boolean
2129 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2130 {
2131 struct bfd_link_info *info;
2132 struct elf_or1k_link_hash_table *htab;
2133 struct elf_or1k_link_hash_entry *eh;
2134 struct elf_or1k_dyn_relocs *p;
2135
2136 if (h->root.type == bfd_link_hash_indirect)
2137 return TRUE;
2138
2139 info = (struct bfd_link_info *) inf;
2140 htab = or1k_elf_hash_table (info);
2141 if (htab == NULL)
2142 return FALSE;
2143
2144 eh = (struct elf_or1k_link_hash_entry *) h;
2145
2146 if (htab->root.dynamic_sections_created
2147 && h->plt.refcount > 0)
2148 {
2149 /* Make sure this symbol is output as a dynamic symbol.
2150 Undefined weak syms won't yet be marked as dynamic. */
2151 if (h->dynindx == -1
2152 && !h->forced_local)
2153 {
2154 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2155 return FALSE;
2156 }
2157
2158 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2159 {
2160 asection *s = htab->root.splt;
2161
2162 /* If this is the first .plt entry, make room for the special
2163 first entry. */
2164 if (s->size == 0)
2165 s->size = PLT_ENTRY_SIZE;
2166
2167 h->plt.offset = s->size;
2168
2169 /* If this symbol is not defined in a regular file, and we are
2170 not generating a shared library, then set the symbol to this
2171 location in the .plt. This is required to make function
2172 pointers compare as equal between the normal executable and
2173 the shared library. */
2174 if (! bfd_link_pic (info)
2175 && !h->def_regular)
2176 {
2177 h->root.u.def.section = s;
2178 h->root.u.def.value = h->plt.offset;
2179 }
2180
2181 /* Make room for this entry. */
2182 s->size += PLT_ENTRY_SIZE;
2183
2184 /* We also need to make an entry in the .got.plt section, which
2185 will be placed in the .got section by the linker script. */
2186 htab->root.sgotplt->size += 4;
2187
2188 /* We also need to make an entry in the .rel.plt section. */
2189 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2190 }
2191 else
2192 {
2193 h->plt.offset = (bfd_vma) -1;
2194 h->needs_plt = 0;
2195 }
2196 }
2197 else
2198 {
2199 h->plt.offset = (bfd_vma) -1;
2200 h->needs_plt = 0;
2201 }
2202
2203 if (h->got.refcount > 0)
2204 {
2205 asection *s;
2206 bfd_boolean dyn;
2207 unsigned char tls_type;
2208
2209 /* Make sure this symbol is output as a dynamic symbol.
2210 Undefined weak syms won't yet be marked as dynamic. */
2211 if (h->dynindx == -1
2212 && !h->forced_local)
2213 {
2214 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2215 return FALSE;
2216 }
2217
2218 s = htab->root.sgot;
2219
2220 h->got.offset = s->size;
2221
2222 tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type;
2223
2224 /* TLS GD requires two GOT and two relocs. */
2225 if (tls_type == TLS_GD)
2226 s->size += 8;
2227 else
2228 s->size += 4;
2229 dyn = htab->root.dynamic_sections_created;
2230 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
2231 {
2232 if (tls_type == TLS_GD)
2233 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2234 else
2235 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2236 }
2237 }
2238 else
2239 h->got.offset = (bfd_vma) -1;
2240
2241 if (eh->dyn_relocs == NULL)
2242 return TRUE;
2243
2244 /* In the shared -Bsymbolic case, discard space allocated for
2245 dynamic pc-relative relocs against symbols which turn out to be
2246 defined in regular objects. For the normal shared case, discard
2247 space for pc-relative relocs that have become local due to symbol
2248 visibility changes. */
2249
2250 if (bfd_link_pic (info))
2251 {
2252 if (SYMBOL_CALLS_LOCAL (info, h))
2253 {
2254 struct elf_or1k_dyn_relocs **pp;
2255
2256 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2257 {
2258 p->count -= p->pc_count;
2259 p->pc_count = 0;
2260 if (p->count == 0)
2261 *pp = p->next;
2262 else
2263 pp = &p->next;
2264 }
2265 }
2266
2267 /* Also discard relocs on undefined weak syms with non-default
2268 visibility. */
2269 if (eh->dyn_relocs != NULL
2270 && h->root.type == bfd_link_hash_undefweak)
2271 {
2272 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2273 eh->dyn_relocs = NULL;
2274
2275 /* Make sure undefined weak symbols are output as a dynamic
2276 symbol in PIEs. */
2277 else if (h->dynindx == -1
2278 && !h->forced_local)
2279 {
2280 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2281 return FALSE;
2282 }
2283 }
2284 }
2285 else
2286 {
2287 /* For the non-shared case, discard space for relocs against
2288 symbols which turn out to need copy relocs or are not
2289 dynamic. */
2290
2291 if (!h->non_got_ref
2292 && ((h->def_dynamic
2293 && !h->def_regular)
2294 || (htab->root.dynamic_sections_created
2295 && (h->root.type == bfd_link_hash_undefweak
2296 || h->root.type == bfd_link_hash_undefined))))
2297 {
2298 /* Make sure this symbol is output as a dynamic symbol.
2299 Undefined weak syms won't yet be marked as dynamic. */
2300 if (h->dynindx == -1
2301 && !h->forced_local)
2302 {
2303 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2304 return FALSE;
2305 }
2306
2307 /* If that succeeded, we know we'll be keeping all the
2308 relocs. */
2309 if (h->dynindx != -1)
2310 goto keep;
2311 }
2312
2313 eh->dyn_relocs = NULL;
2314
2315 keep: ;
2316 }
2317
2318 /* Finally, allocate space. */
2319 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2320 {
2321 asection *sreloc = elf_section_data (p->sec)->sreloc;
2322 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2323 }
2324
2325 return TRUE;
2326 }
2327
2328 /* Find any dynamic relocs that apply to read-only sections. */
2329
2330 static bfd_boolean
2331 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2332 {
2333 struct elf_or1k_link_hash_entry *eh;
2334 struct elf_or1k_dyn_relocs *p;
2335
2336 eh = (struct elf_or1k_link_hash_entry *) h;
2337 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2338 {
2339 asection *s = p->sec->output_section;
2340
2341 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2342 {
2343 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2344
2345 info->flags |= DF_TEXTREL;
2346
2347 /* Not an error, just cut short the traversal. */
2348 return FALSE;
2349 }
2350 }
2351 return TRUE;
2352 }
2353
2354 /* Set the sizes of the dynamic sections. */
2355
2356 static bfd_boolean
2357 or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2358 struct bfd_link_info *info)
2359 {
2360 struct elf_or1k_link_hash_table *htab;
2361 bfd *dynobj;
2362 asection *s;
2363 bfd_boolean relocs;
2364 bfd *ibfd;
2365
2366 htab = or1k_elf_hash_table (info);
2367 if (htab == NULL)
2368 return FALSE;
2369
2370 dynobj = htab->root.dynobj;
2371 BFD_ASSERT (dynobj != NULL);
2372
2373 if (htab->root.dynamic_sections_created)
2374 {
2375 /* Set the contents of the .interp section to the interpreter. */
2376 if (bfd_link_executable (info) && !info->nointerp)
2377 {
2378 s = bfd_get_section_by_name (dynobj, ".interp");
2379 BFD_ASSERT (s != NULL);
2380 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2381 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2382 }
2383 }
2384
2385 /* Set up .got offsets for local syms, and space for local dynamic
2386 relocs. */
2387 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2388 {
2389 bfd_signed_vma *local_got;
2390 bfd_signed_vma *end_local_got;
2391 bfd_size_type locsymcount;
2392 Elf_Internal_Shdr *symtab_hdr;
2393 unsigned char *local_tls_type;
2394 asection *srel;
2395
2396 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2397 continue;
2398
2399 for (s = ibfd->sections; s != NULL; s = s->next)
2400 {
2401 struct elf_or1k_dyn_relocs *p;
2402
2403 for (p = ((struct elf_or1k_dyn_relocs *)
2404 elf_section_data (s)->local_dynrel);
2405 p != NULL;
2406 p = p->next)
2407 {
2408 if (! bfd_is_abs_section (p->sec)
2409 && bfd_is_abs_section (p->sec->output_section))
2410 {
2411 /* Input section has been discarded, either because
2412 it is a copy of a linkonce section or due to
2413 linker script /DISCARD/, so we'll be discarding
2414 the relocs too. */
2415 }
2416 else if (p->count != 0)
2417 {
2418 srel = elf_section_data (p->sec)->sreloc;
2419 srel->size += p->count * sizeof (Elf32_External_Rela);
2420 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2421 info->flags |= DF_TEXTREL;
2422 }
2423 }
2424 }
2425
2426 local_got = elf_local_got_refcounts (ibfd);
2427 if (!local_got)
2428 continue;
2429
2430 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2431 locsymcount = symtab_hdr->sh_info;
2432 end_local_got = local_got + locsymcount;
2433 s = htab->root.sgot;
2434 srel = htab->root.srelgot;
2435 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd);
2436 for (; local_got < end_local_got; ++local_got)
2437 {
2438 if (*local_got > 0)
2439 {
2440 *local_got = s->size;
2441
2442 /* TLS GD requires two GOT and two relocs. */
2443 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2444 s->size += 8;
2445 else
2446 s->size += 4;
2447 if (bfd_link_pic (info))
2448 {
2449 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2450 srel->size += 2 * sizeof (Elf32_External_Rela);
2451 else
2452 srel->size += sizeof (Elf32_External_Rela);
2453 }
2454 }
2455 else
2456
2457 *local_got = (bfd_vma) -1;
2458
2459 if (local_tls_type)
2460 ++local_tls_type;
2461 }
2462 }
2463
2464 /* Allocate global sym .plt and .got entries, and space for global
2465 sym dynamic relocs. */
2466 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2467
2468 /* We now have determined the sizes of the various dynamic sections.
2469 Allocate memory for them. */
2470 relocs = FALSE;
2471 for (s = dynobj->sections; s != NULL; s = s->next)
2472 {
2473 if ((s->flags & SEC_LINKER_CREATED) == 0)
2474 continue;
2475
2476 if (s == htab->root.splt
2477 || s == htab->root.sgot
2478 || s == htab->root.sgotplt
2479 || s == htab->sdynbss)
2480 {
2481 /* Strip this section if we don't need it; see the
2482 comment below. */
2483 }
2484 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2485 {
2486 if (s->size != 0 && s != htab->root.srelplt)
2487 relocs = TRUE;
2488
2489 /* We use the reloc_count field as a counter if we need
2490 to copy relocs into the output file. */
2491 s->reloc_count = 0;
2492 }
2493 else
2494 /* It's not one of our sections, so don't allocate space. */
2495 continue;
2496
2497 if (s->size == 0)
2498 {
2499 /* If we don't need this section, strip it from the
2500 output file. This is mostly to handle .rela.bss and
2501 .rela.plt. We must create both sections in
2502 create_dynamic_sections, because they must be created
2503 before the linker maps input sections to output
2504 sections. The linker does that before
2505 adjust_dynamic_symbol is called, and it is that
2506 function which decides whether anything needs to go
2507 into these sections. */
2508 s->flags |= SEC_EXCLUDE;
2509 continue;
2510 }
2511
2512 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2513 continue;
2514
2515 /* Allocate memory for the section contents. We use bfd_zalloc
2516 here in case unused entries are not reclaimed before the
2517 section's contents are written out. This should not happen,
2518 but this way if it does, we get a R_OR1K_NONE reloc instead
2519 of garbage. */
2520 s->contents = bfd_zalloc (dynobj, s->size);
2521
2522 if (s->contents == NULL)
2523 return FALSE;
2524 }
2525
2526 if (htab->root.dynamic_sections_created)
2527 {
2528 /* Add some entries to the .dynamic section. We fill in the
2529 values later, in or1k_elf_finish_dynamic_sections, but we
2530 must add the entries now so that we get the correct size for
2531 the .dynamic section. The DT_DEBUG entry is filled in by the
2532 dynamic linker and used by the debugger. */
2533 #define add_dynamic_entry(TAG, VAL) \
2534 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2535
2536 if (bfd_link_executable (info))
2537 {
2538 if (! add_dynamic_entry (DT_DEBUG, 0))
2539 return FALSE;
2540 }
2541
2542 if (htab->root.splt->size != 0)
2543 {
2544 if (! add_dynamic_entry (DT_PLTGOT, 0)
2545 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2546 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2547 || ! add_dynamic_entry (DT_JMPREL, 0))
2548 return FALSE;
2549 }
2550
2551 if (relocs)
2552 {
2553 if (! add_dynamic_entry (DT_RELA, 0)
2554 || ! add_dynamic_entry (DT_RELASZ, 0)
2555 || ! add_dynamic_entry (DT_RELAENT,
2556 sizeof (Elf32_External_Rela)))
2557 return FALSE;
2558
2559 /* If any dynamic relocs apply to a read-only section,
2560 then we need a DT_TEXTREL entry. */
2561 if ((info->flags & DF_TEXTREL) == 0)
2562 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2563 info);
2564
2565 if ((info->flags & DF_TEXTREL) != 0)
2566 {
2567 if (! add_dynamic_entry (DT_TEXTREL, 0))
2568 return FALSE;
2569 }
2570 }
2571 }
2572
2573 #undef add_dynamic_entry
2574 return TRUE;
2575 }
2576
2577 /* Create dynamic sections when linking against a dynamic object. */
2578
2579 static bfd_boolean
2580 or1k_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2581 {
2582 struct elf_or1k_link_hash_table *htab;
2583
2584 htab = or1k_elf_hash_table (info);
2585 if (htab == NULL)
2586 return FALSE;
2587
2588 if (!htab->root.sgot && !_bfd_elf_create_got_section (dynobj, info))
2589 return FALSE;
2590
2591 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2592 return FALSE;
2593
2594 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2595 if (!bfd_link_pic (info))
2596 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2597
2598 if (!htab->root.splt || !htab->root.srelplt || !htab->sdynbss
2599 || (!bfd_link_pic (info) && !htab->srelbss))
2600 abort ();
2601
2602 return TRUE;
2603 }
2604
2605 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2606
2607 static void
2608 or1k_elf_copy_indirect_symbol (struct bfd_link_info *info,
2609 struct elf_link_hash_entry *dir,
2610 struct elf_link_hash_entry *ind)
2611 {
2612 struct elf_or1k_link_hash_entry * edir;
2613 struct elf_or1k_link_hash_entry * eind;
2614
2615 edir = (struct elf_or1k_link_hash_entry *) dir;
2616 eind = (struct elf_or1k_link_hash_entry *) ind;
2617
2618 if (eind->dyn_relocs != NULL)
2619 {
2620 if (edir->dyn_relocs != NULL)
2621 {
2622 struct elf_or1k_dyn_relocs **pp;
2623 struct elf_or1k_dyn_relocs *p;
2624
2625 /* Add reloc counts against the indirect sym to the direct sym
2626 list. Merge any entries against the same section. */
2627 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2628 {
2629 struct elf_or1k_dyn_relocs *q;
2630
2631 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2632 if (q->sec == p->sec)
2633 {
2634 q->pc_count += p->pc_count;
2635 q->count += p->count;
2636 *pp = p->next;
2637 break;
2638 }
2639 if (q == NULL)
2640 pp = &p->next;
2641 }
2642 *pp = edir->dyn_relocs;
2643 }
2644
2645 edir->dyn_relocs = eind->dyn_relocs;
2646 eind->dyn_relocs = NULL;
2647 }
2648
2649 if (ind->root.type == bfd_link_hash_indirect)
2650 {
2651 if (dir->got.refcount <= 0)
2652 {
2653 edir->tls_type = eind->tls_type;
2654 eind->tls_type = TLS_UNKNOWN;
2655 }
2656 }
2657
2658 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2659 }
2660
2661 /* Set the right machine number. */
2662
2663 static bfd_boolean
2664 or1k_elf_object_p (bfd *abfd)
2665 {
2666 unsigned long mach = bfd_mach_or1k;
2667
2668 if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY)
2669 mach = bfd_mach_or1knd;
2670
2671 return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach);
2672 }
2673
2674 /* Store the machine number in the flags field. */
2675
2676 static void
2677 or1k_elf_final_write_processing (bfd *abfd,
2678 bfd_boolean linker ATTRIBUTE_UNUSED)
2679 {
2680 switch (bfd_get_mach (abfd))
2681 {
2682 default:
2683 case bfd_mach_or1k:
2684 break;
2685 case bfd_mach_or1knd:
2686 elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY;
2687 break;
2688 }
2689 }
2690
2691 static bfd_boolean
2692 or1k_elf_set_private_flags (bfd *abfd, flagword flags)
2693 {
2694 BFD_ASSERT (!elf_flags_init (abfd)
2695 || elf_elfheader (abfd)->e_flags == flags);
2696
2697 elf_elfheader (abfd)->e_flags = flags;
2698 elf_flags_init (abfd) = TRUE;
2699 return TRUE;
2700 }
2701
2702 /* Make sure all input files are consistent with respect to
2703 EF_OR1K_NODELAY flag setting. */
2704
2705 static bfd_boolean
2706 elf32_or1k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
2707 {
2708 bfd *obfd = info->output_bfd;
2709 flagword out_flags;
2710 flagword in_flags;
2711
2712 in_flags = elf_elfheader (ibfd)->e_flags;
2713 out_flags = elf_elfheader (obfd)->e_flags;
2714
2715 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2716 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2717 return TRUE;
2718
2719 if (!elf_flags_init (obfd))
2720 {
2721 elf_flags_init (obfd) = TRUE;
2722 elf_elfheader (obfd)->e_flags = in_flags;
2723
2724 return TRUE;
2725 }
2726
2727 if (in_flags == out_flags)
2728 return TRUE;
2729
2730 if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY))
2731 {
2732 _bfd_error_handler
2733 (_("%B: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd);
2734
2735 bfd_set_error (bfd_error_bad_value);
2736 return FALSE;
2737 }
2738
2739 return TRUE;
2740
2741 }
2742
2743 #define ELF_ARCH bfd_arch_or1k
2744 #define ELF_MACHINE_CODE EM_OR1K
2745 #define ELF_TARGET_ID OR1K_ELF_DATA
2746 #define ELF_MAXPAGESIZE 0x2000
2747
2748 #define TARGET_BIG_SYM or1k_elf32_vec
2749 #define TARGET_BIG_NAME "elf32-or1k"
2750
2751 #define elf_info_to_howto_rel NULL
2752 #define elf_info_to_howto or1k_info_to_howto_rela
2753 #define elf_backend_relocate_section or1k_elf_relocate_section
2754 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2755 #define elf_backend_gc_sweep_hook or1k_elf_gc_sweep_hook
2756 #define elf_backend_check_relocs or1k_elf_check_relocs
2757 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2758 #define elf_backend_can_gc_sections 1
2759 #define elf_backend_rela_normal 1
2760
2761 #define bfd_elf32_mkobject elf_or1k_mkobject
2762
2763 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2764 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2765 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2766 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2767
2768 #define elf_backend_object_p or1k_elf_object_p
2769 #define elf_backend_final_write_processing or1k_elf_final_write_processing
2770 #define elf_backend_can_refcount 1
2771
2772 #define elf_backend_plt_readonly 1
2773 #define elf_backend_want_got_plt 1
2774 #define elf_backend_want_plt_sym 0
2775 #define elf_backend_got_header_size 12
2776 #define elf_backend_dtrel_excludes_plt 1
2777
2778 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2779 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2780 #define elf_backend_create_dynamic_sections or1k_elf_create_dynamic_sections
2781 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2782 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2783 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2784 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2785
2786 #include "elf32-target.h"
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