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Missing ChangeLog and files for commit 8b00c176168dc7b0d78d0dc1f7d42f915375dc4a
[deliverable/binutils-gdb.git] / bfd / elf32-or1k.c
1 /* Or1k-specific support for 32-bit ELF.
2 Copyright (C) 2001-2017 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 /* Small local sym to section mapping cache. */
619 struct sym_cache sym_sec;
620 };
621
622 /* Get the ELF linker hash table from a link_info structure. */
623 #define or1k_elf_hash_table(p) \
624 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
625 == OR1K_ELF_DATA ? ((struct elf_or1k_link_hash_table *) ((p)->hash)) : NULL)
626
627 static bfd_boolean
628 elf_or1k_mkobject (bfd *abfd)
629 {
630 return bfd_elf_allocate_object (abfd, sizeof (struct elf_or1k_obj_tdata),
631 OR1K_ELF_DATA);
632 }
633
634 /* Create an entry in an or1k ELF linker hash table. */
635
636 static struct bfd_hash_entry *
637 or1k_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
638 struct bfd_hash_table *table,
639 const char *string)
640 {
641 struct elf_or1k_link_hash_entry *ret =
642 (struct elf_or1k_link_hash_entry *) entry;
643
644 /* Allocate the structure if it has not already been allocated by a
645 subclass. */
646 if (ret == NULL)
647 ret = bfd_hash_allocate (table,
648 sizeof (struct elf_or1k_link_hash_entry));
649 if (ret == NULL)
650 return NULL;
651
652 /* Call the allocation method of the superclass. */
653 ret = ((struct elf_or1k_link_hash_entry *)
654 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
655 table, string));
656 if (ret != NULL)
657 {
658 struct elf_or1k_link_hash_entry *eh;
659
660 eh = (struct elf_or1k_link_hash_entry *) ret;
661 eh->dyn_relocs = NULL;
662 eh->tls_type = TLS_UNKNOWN;
663 }
664
665 return (struct bfd_hash_entry *) ret;
666 }
667
668 /* Create an or1k ELF linker hash table. */
669
670 static struct bfd_link_hash_table *
671 or1k_elf_link_hash_table_create (bfd *abfd)
672 {
673 struct elf_or1k_link_hash_table *ret;
674 bfd_size_type amt = sizeof (struct elf_or1k_link_hash_table);
675
676 ret = bfd_zmalloc (amt);
677 if (ret == NULL)
678 return NULL;
679
680 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
681 or1k_elf_link_hash_newfunc,
682 sizeof (struct elf_or1k_link_hash_entry),
683 OR1K_ELF_DATA))
684 {
685 free (ret);
686 return NULL;
687 }
688
689 return &ret->root.root;
690 }
691
692 static reloc_howto_type *
693 or1k_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
694 bfd_reloc_code_real_type code)
695 {
696 unsigned int i;
697
698 for (i = ARRAY_SIZE (or1k_reloc_map); i--;)
699 if (or1k_reloc_map[i].bfd_reloc_val == code)
700 return & or1k_elf_howto_table[or1k_reloc_map[i].or1k_reloc_val];
701
702 return NULL;
703 }
704
705 static reloc_howto_type *
706 or1k_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
707 const char *r_name)
708 {
709 unsigned int i;
710
711 for (i = 0;
712 i < (sizeof (or1k_elf_howto_table)
713 / sizeof (or1k_elf_howto_table[0]));
714 i++)
715 if (or1k_elf_howto_table[i].name != NULL
716 && strcasecmp (or1k_elf_howto_table[i].name, r_name) == 0)
717 return &or1k_elf_howto_table[i];
718
719 return NULL;
720 }
721
722 /* Set the howto pointer for an Or1k ELF reloc. */
723
724 static void
725 or1k_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
726 arelent * cache_ptr,
727 Elf_Internal_Rela * dst)
728 {
729 unsigned int r_type;
730
731 r_type = ELF32_R_TYPE (dst->r_info);
732 if (r_type >= (unsigned int) R_OR1K_max)
733 {
734 /* xgettext:c-format */
735 _bfd_error_handler (_("%B: invalid OR1K reloc number: %d"), abfd, r_type);
736 r_type = 0;
737 }
738 cache_ptr->howto = & or1k_elf_howto_table[r_type];
739 }
740
741
742 /* Return the relocation value for @tpoff relocations.. */
743 static bfd_vma
744 tpoff (struct bfd_link_info *info, bfd_vma address)
745 {
746 /* If tls_sec is NULL, we should have signalled an error already. */
747 if (elf_hash_table (info)->tls_sec == NULL)
748 return 0;
749
750 /* The thread pointer on or1k stores the address after the TCB where
751 the data is, just compute the difference. No need to compensate
752 for the size of TCB. */
753 return (address - elf_hash_table (info)->tls_sec->vma);
754 }
755
756 /* Relocate an Or1k ELF section.
757
758 The RELOCATE_SECTION function is called by the new ELF backend linker
759 to handle the relocations for a section.
760
761 The relocs are always passed as Rela structures; if the section
762 actually uses Rel structures, the r_addend field will always be
763 zero.
764
765 This function is responsible for adjusting the section contents as
766 necessary, and (if using Rela relocs and generating a relocatable
767 output file) adjusting the reloc addend as necessary.
768
769 This function does not have to worry about setting the reloc
770 address or the reloc symbol index.
771
772 LOCAL_SYMS is a pointer to the swapped in local symbols.
773
774 LOCAL_SECTIONS is an array giving the section in the input file
775 corresponding to the st_shndx field of each local symbol.
776
777 The global hash table entry for the global symbols can be found
778 via elf_sym_hashes (input_bfd).
779
780 When generating relocatable output, this function must handle
781 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
782 going to be the section symbol corresponding to the output
783 section, which means that the addend must be adjusted
784 accordingly. */
785
786 static bfd_boolean
787 or1k_elf_relocate_section (bfd *output_bfd,
788 struct bfd_link_info *info,
789 bfd *input_bfd,
790 asection *input_section,
791 bfd_byte *contents,
792 Elf_Internal_Rela *relocs,
793 Elf_Internal_Sym *local_syms,
794 asection **local_sections)
795 {
796 Elf_Internal_Shdr *symtab_hdr;
797 struct elf_link_hash_entry **sym_hashes;
798 Elf_Internal_Rela *rel;
799 Elf_Internal_Rela *relend;
800 struct elf_or1k_link_hash_table *htab = or1k_elf_hash_table (info);
801 bfd *dynobj;
802 asection *sreloc;
803 bfd_vma *local_got_offsets;
804 asection *sgot;
805
806 if (htab == NULL)
807 return FALSE;
808
809 dynobj = htab->root.dynobj;
810 local_got_offsets = elf_local_got_offsets (input_bfd);
811
812 sreloc = elf_section_data (input_section)->sreloc;
813
814 sgot = htab->root.sgot;
815
816 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
817 sym_hashes = elf_sym_hashes (input_bfd);
818 relend = relocs + input_section->reloc_count;
819
820 for (rel = relocs; rel < relend; rel++)
821 {
822 reloc_howto_type *howto;
823 unsigned long r_symndx;
824 Elf_Internal_Sym *sym;
825 asection *sec;
826 struct elf_link_hash_entry *h;
827 bfd_vma relocation;
828 bfd_reloc_status_type r;
829 const char *name = NULL;
830 int r_type;
831
832 r_type = ELF32_R_TYPE (rel->r_info);
833 r_symndx = ELF32_R_SYM (rel->r_info);
834
835 if (r_type == R_OR1K_GNU_VTINHERIT
836 || r_type == R_OR1K_GNU_VTENTRY)
837 continue;
838
839 if (r_type < 0 || r_type >= (int) R_OR1K_max)
840 {
841 bfd_set_error (bfd_error_bad_value);
842 return FALSE;
843 }
844
845 howto = or1k_elf_howto_table + ELF32_R_TYPE (rel->r_info);
846 h = NULL;
847 sym = NULL;
848 sec = NULL;
849
850 if (r_symndx < symtab_hdr->sh_info)
851 {
852 sym = local_syms + r_symndx;
853 sec = local_sections[r_symndx];
854 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
855
856 name = bfd_elf_string_from_elf_section
857 (input_bfd, symtab_hdr->sh_link, sym->st_name);
858 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
859 }
860 else
861 {
862 bfd_boolean unresolved_reloc, warned, ignored;
863
864 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
865 r_symndx, symtab_hdr, sym_hashes,
866 h, sec, relocation,
867 unresolved_reloc, warned, ignored);
868 }
869
870 if (sec != NULL && discarded_section (sec))
871 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
872 rel, 1, relend, howto, 0, contents);
873
874 if (bfd_link_relocatable (info))
875 continue;
876
877 switch (howto->type)
878 {
879 case R_OR1K_PLT26:
880 {
881 if (htab->root.splt != NULL && h != NULL
882 && h->plt.offset != (bfd_vma) -1)
883 {
884 relocation = (htab->root.splt->output_section->vma
885 + htab->root.splt->output_offset
886 + h->plt.offset);
887 }
888 break;
889 }
890
891 case R_OR1K_GOT16:
892 /* Relocation is to the entry for this symbol in the global
893 offset table. */
894 BFD_ASSERT (sgot != NULL);
895 if (h != NULL)
896 {
897 bfd_boolean dyn;
898 bfd_vma off;
899
900 off = h->got.offset;
901 BFD_ASSERT (off != (bfd_vma) -1);
902
903 dyn = htab->root.dynamic_sections_created;
904 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
905 bfd_link_pic (info),
906 h)
907 || (bfd_link_pic (info)
908 && SYMBOL_REFERENCES_LOCAL (info, h)))
909 {
910 /* This is actually a static link, or it is a
911 -Bsymbolic link and the symbol is defined
912 locally, or the symbol was forced to be local
913 because of a version file. We must initialize
914 this entry in the global offset table. Since the
915 offset must always be a multiple of 4, we use the
916 least significant bit to record whether we have
917 initialized it already.
918
919 When doing a dynamic link, we create a .rela.got
920 relocation entry to initialize the value. This
921 is done in the finish_dynamic_symbol routine. */
922 if ((off & 1) != 0)
923 off &= ~1;
924 else
925 {
926 /* Write entry in GOT. */
927 bfd_put_32 (output_bfd, relocation,
928 sgot->contents + off);
929 /* Mark GOT entry as having been written. */
930 h->got.offset |= 1;
931 }
932 }
933
934 relocation = sgot->output_offset + off;
935 }
936 else
937 {
938 bfd_vma off;
939 bfd_byte *loc;
940
941 BFD_ASSERT (local_got_offsets != NULL
942 && local_got_offsets[r_symndx] != (bfd_vma) -1);
943
944 /* Get offset into GOT table. */
945 off = local_got_offsets[r_symndx];
946
947 /* The offset must always be a multiple of 4. We use
948 the least significant bit to record whether we have
949 already processed this entry. */
950 if ((off & 1) != 0)
951 off &= ~1;
952 else
953 {
954 /* Write entry in GOT. */
955 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
956 if (bfd_link_pic (info))
957 {
958 asection *srelgot;
959 Elf_Internal_Rela outrel;
960
961 /* We need to generate a R_OR1K_RELATIVE reloc
962 for the dynamic linker. */
963 srelgot = htab->root.srelgot;
964 BFD_ASSERT (srelgot != NULL);
965
966 outrel.r_offset = (sgot->output_section->vma
967 + sgot->output_offset
968 + off);
969 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
970 outrel.r_addend = relocation;
971 loc = srelgot->contents;
972 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
973 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
974 ++srelgot->reloc_count;
975 }
976
977 local_got_offsets[r_symndx] |= 1;
978 }
979 relocation = sgot->output_offset + off;
980 }
981
982 /* Addend should be zero. */
983 if (rel->r_addend != 0)
984 _bfd_error_handler
985 (_("internal error: addend should be zero for R_OR1K_GOT16"));
986
987 break;
988
989 case R_OR1K_GOTOFF_LO16:
990 case R_OR1K_GOTOFF_HI16:
991 /* Relocation is offset from GOT. */
992 BFD_ASSERT (sgot != NULL);
993 relocation
994 -= (htab->root.hgot->root.u.def.value
995 + htab->root.hgot->root.u.def.section->output_offset
996 + htab->root.hgot->root.u.def.section->output_section->vma);
997 break;
998
999 case R_OR1K_INSN_REL_26:
1000 case R_OR1K_HI_16_IN_INSN:
1001 case R_OR1K_LO_16_IN_INSN:
1002 case R_OR1K_32:
1003 /* R_OR1K_16? */
1004 {
1005 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1006 from removed linkonce sections, or sections discarded by
1007 a linker script. */
1008 if (r_symndx == STN_UNDEF
1009 || (input_section->flags & SEC_ALLOC) == 0)
1010 break;
1011
1012 if ((bfd_link_pic (info)
1013 && (h == NULL
1014 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1015 || h->root.type != bfd_link_hash_undefweak)
1016 && (howto->type != R_OR1K_INSN_REL_26
1017 || !SYMBOL_CALLS_LOCAL (info, h)))
1018 || (!bfd_link_pic (info)
1019 && h != NULL
1020 && h->dynindx != -1
1021 && !h->non_got_ref
1022 && ((h->def_dynamic
1023 && !h->def_regular)
1024 || h->root.type == bfd_link_hash_undefweak
1025 || h->root.type == bfd_link_hash_undefined)))
1026 {
1027 Elf_Internal_Rela outrel;
1028 bfd_byte *loc;
1029 bfd_boolean skip;
1030
1031 /* When generating a shared object, these relocations
1032 are copied into the output file to be resolved at run
1033 time. */
1034
1035 BFD_ASSERT (sreloc != NULL);
1036
1037 skip = FALSE;
1038
1039 outrel.r_offset =
1040 _bfd_elf_section_offset (output_bfd, info, input_section,
1041 rel->r_offset);
1042 if (outrel.r_offset == (bfd_vma) -1)
1043 skip = TRUE;
1044 else if (outrel.r_offset == (bfd_vma) -2)
1045 skip = TRUE;
1046 outrel.r_offset += (input_section->output_section->vma
1047 + input_section->output_offset);
1048
1049 if (skip)
1050 memset (&outrel, 0, sizeof outrel);
1051 /* h->dynindx may be -1 if the symbol was marked to
1052 become local. */
1053 else if (h != NULL
1054 && ((! info->symbolic && h->dynindx != -1)
1055 || !h->def_regular))
1056 {
1057 BFD_ASSERT (h->dynindx != -1);
1058 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1059 outrel.r_addend = rel->r_addend;
1060 }
1061 else
1062 {
1063 if (r_type == R_OR1K_32)
1064 {
1065 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1066 outrel.r_addend = relocation + rel->r_addend;
1067 }
1068 else
1069 {
1070 BFD_FAIL ();
1071 _bfd_error_handler
1072 (_("%B: probably compiled without -fPIC?"),
1073 input_bfd);
1074 bfd_set_error (bfd_error_bad_value);
1075 return FALSE;
1076 }
1077 }
1078
1079 loc = sreloc->contents;
1080 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1081 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1082 break;
1083 }
1084 break;
1085 }
1086
1087 case R_OR1K_TLS_LDM_HI16:
1088 case R_OR1K_TLS_LDM_LO16:
1089 case R_OR1K_TLS_LDO_HI16:
1090 case R_OR1K_TLS_LDO_LO16:
1091 /* TODO: implement support for local dynamic. */
1092 BFD_FAIL ();
1093 _bfd_error_handler
1094 (_("%B: support for local dynamic not implemented"),
1095 input_bfd);
1096 bfd_set_error (bfd_error_bad_value);
1097 return FALSE;
1098
1099
1100 case R_OR1K_TLS_GD_HI16:
1101 case R_OR1K_TLS_GD_LO16:
1102 case R_OR1K_TLS_IE_HI16:
1103 case R_OR1K_TLS_IE_LO16:
1104 {
1105 bfd_vma gotoff;
1106 Elf_Internal_Rela rela;
1107 bfd_byte *loc;
1108 int dynamic;
1109
1110 sreloc = bfd_get_section_by_name (dynobj, ".rela.got");
1111
1112 /* Mark as TLS related GOT entry by setting
1113 bit 2 as well as bit 1. */
1114 if (h != NULL)
1115 {
1116 gotoff = h->got.offset;
1117 h->got.offset |= 3;
1118 }
1119 else
1120 {
1121 gotoff = local_got_offsets[r_symndx];
1122 local_got_offsets[r_symndx] |= 3;
1123 }
1124
1125 /* Only process the relocation once. */
1126 if (gotoff & 1)
1127 {
1128 relocation = sgot->output_offset + (gotoff & ~3);
1129 break;
1130 }
1131
1132 BFD_ASSERT (elf_hash_table (info)->hgot == NULL
1133 || elf_hash_table (info)->hgot->root.u.def.value == 0);
1134
1135 /* Dynamic entries will require relocations. if we do not need
1136 them we will just use the default R_OR1K_NONE and
1137 not set anything. */
1138 dynamic = bfd_link_pic (info)
1139 || (sec && (sec->flags & SEC_ALLOC) != 0
1140 && h != NULL
1141 && (h->root.type == bfd_link_hash_defweak || !h->def_regular));
1142
1143 /* Shared GD. */
1144 if (dynamic && (howto->type == R_OR1K_TLS_GD_HI16
1145 || howto->type == R_OR1K_TLS_GD_LO16))
1146 {
1147 int i;
1148
1149 /* Add DTPMOD and DTPOFF GOT and rela entries. */
1150 for (i = 0; i < 2; ++i)
1151 {
1152 rela.r_offset = sgot->output_section->vma +
1153 sgot->output_offset + gotoff + i*4;
1154 if (h != NULL && h->dynindx != -1)
1155 {
1156 rela.r_info = ELF32_R_INFO (h->dynindx,
1157 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1158 rela.r_addend = 0;
1159 }
1160 else
1161 {
1162 rela.r_info = ELF32_R_INFO (0,
1163 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1164 rela.r_addend = tpoff (info, relocation);
1165 }
1166
1167 loc = sreloc->contents;
1168 loc += sreloc->reloc_count++ *
1169 sizeof (Elf32_External_Rela);
1170
1171 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1172 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff + i*4);
1173 }
1174 }
1175 /* Static GD. */
1176 else if (howto->type == R_OR1K_TLS_GD_HI16
1177 || howto->type == R_OR1K_TLS_GD_LO16)
1178 {
1179 bfd_put_32 (output_bfd, 1, sgot->contents + gotoff);
1180 bfd_put_32 (output_bfd, tpoff (info, relocation),
1181 sgot->contents + gotoff + 4);
1182 }
1183 /* Shared IE. */
1184 else if (dynamic)
1185 {
1186 /* Add TPOFF GOT and rela entries. */
1187 rela.r_offset = sgot->output_section->vma +
1188 sgot->output_offset + gotoff;
1189 if (h != NULL && h->dynindx != -1)
1190 {
1191 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_TLS_TPOFF);
1192 rela.r_addend = 0;
1193 }
1194 else
1195 {
1196 rela.r_info = ELF32_R_INFO (0, R_OR1K_TLS_TPOFF);
1197 rela.r_addend = tpoff (info, relocation);
1198 }
1199
1200 loc = sreloc->contents;
1201 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1202
1203 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1204 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff);
1205 }
1206 /* Static IE. */
1207 else
1208 {
1209 bfd_put_32 (output_bfd, tpoff (info, relocation),
1210 sgot->contents + gotoff);
1211 }
1212 relocation = sgot->output_offset + gotoff;
1213 break;
1214 }
1215 case R_OR1K_TLS_LE_HI16:
1216 case R_OR1K_TLS_LE_LO16:
1217
1218 /* Relocation is offset from TP. */
1219 relocation = tpoff (info, relocation);
1220 break;
1221
1222 case R_OR1K_TLS_DTPMOD:
1223 case R_OR1K_TLS_DTPOFF:
1224 case R_OR1K_TLS_TPOFF:
1225 /* These are resolved dynamically on load and shouldn't
1226 be used as linker input. */
1227 BFD_FAIL ();
1228 _bfd_error_handler
1229 (_("%B: will not resolve runtime TLS relocation"),
1230 input_bfd);
1231 bfd_set_error (bfd_error_bad_value);
1232 return FALSE;
1233
1234 default:
1235 break;
1236 }
1237 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
1238 rel->r_offset, relocation, rel->r_addend);
1239
1240 if (r != bfd_reloc_ok)
1241 {
1242 const char *msg = NULL;
1243
1244 switch (r)
1245 {
1246 case bfd_reloc_overflow:
1247 (*info->callbacks->reloc_overflow)
1248 (info, (h ? &h->root : NULL), name, howto->name,
1249 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1250 break;
1251
1252 case bfd_reloc_undefined:
1253 (*info->callbacks->undefined_symbol)
1254 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
1255 break;
1256
1257 case bfd_reloc_outofrange:
1258 msg = _("internal error: out of range error");
1259 break;
1260
1261 case bfd_reloc_notsupported:
1262 msg = _("internal error: unsupported relocation error");
1263 break;
1264
1265 case bfd_reloc_dangerous:
1266 msg = _("internal error: dangerous relocation");
1267 break;
1268
1269 default:
1270 msg = _("internal error: unknown error");
1271 break;
1272 }
1273
1274 if (msg)
1275 (*info->callbacks->warning) (info, msg, name, input_bfd,
1276 input_section, rel->r_offset);
1277 }
1278 }
1279
1280 return TRUE;
1281 }
1282
1283 /* Return the section that should be marked against GC for a given
1284 relocation. */
1285
1286 static asection *
1287 or1k_elf_gc_mark_hook (asection *sec,
1288 struct bfd_link_info *info,
1289 Elf_Internal_Rela *rel,
1290 struct elf_link_hash_entry *h,
1291 Elf_Internal_Sym *sym)
1292 {
1293 if (h != NULL)
1294 switch (ELF32_R_TYPE (rel->r_info))
1295 {
1296 case R_OR1K_GNU_VTINHERIT:
1297 case R_OR1K_GNU_VTENTRY:
1298 return NULL;
1299 }
1300
1301 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1302 }
1303
1304 static bfd_boolean
1305 or1k_elf_gc_sweep_hook (bfd *abfd,
1306 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1307 asection *sec,
1308 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1309 {
1310 /* Update the got entry reference counts for the section being removed. */
1311 Elf_Internal_Shdr *symtab_hdr;
1312 struct elf_link_hash_entry **sym_hashes;
1313 bfd_signed_vma *local_got_refcounts;
1314 const Elf_Internal_Rela *rel, *relend;
1315
1316 elf_section_data (sec)->local_dynrel = NULL;
1317
1318 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1319 sym_hashes = elf_sym_hashes (abfd);
1320 local_got_refcounts = elf_local_got_refcounts (abfd);
1321
1322 relend = relocs + sec->reloc_count;
1323 for (rel = relocs; rel < relend; rel++)
1324 {
1325 unsigned long r_symndx;
1326 struct elf_link_hash_entry *h = NULL;
1327
1328 r_symndx = ELF32_R_SYM (rel->r_info);
1329 if (r_symndx >= symtab_hdr->sh_info)
1330 {
1331 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1332 while (h->root.type == bfd_link_hash_indirect
1333 || h->root.type == bfd_link_hash_warning)
1334 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1335 }
1336
1337 switch (ELF32_R_TYPE (rel->r_info))
1338 {
1339 case R_OR1K_GOT16:
1340 if (h != NULL)
1341 {
1342 if (h->got.refcount > 0)
1343 h->got.refcount--;
1344 }
1345 else
1346 {
1347 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
1348 local_got_refcounts[r_symndx]--;
1349 }
1350 break;
1351
1352 default:
1353 break;
1354 }
1355 }
1356 return TRUE;
1357 }
1358
1359 /* Look through the relocs for a section during the first phase. */
1360
1361 static bfd_boolean
1362 or1k_elf_check_relocs (bfd *abfd,
1363 struct bfd_link_info *info,
1364 asection *sec,
1365 const Elf_Internal_Rela *relocs)
1366 {
1367 Elf_Internal_Shdr *symtab_hdr;
1368 struct elf_link_hash_entry **sym_hashes;
1369 const Elf_Internal_Rela *rel;
1370
1371 const Elf_Internal_Rela *rel_end;
1372 struct elf_or1k_link_hash_table *htab;
1373 bfd *dynobj;
1374 asection *sreloc = NULL;
1375
1376 if (bfd_link_relocatable (info))
1377 return TRUE;
1378
1379 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1380 sym_hashes = elf_sym_hashes (abfd);
1381
1382 htab = or1k_elf_hash_table (info);
1383 if (htab == NULL)
1384 return FALSE;
1385
1386 dynobj = htab->root.dynobj;
1387
1388 rel_end = relocs + sec->reloc_count;
1389 for (rel = relocs; rel < rel_end; rel++)
1390 {
1391 struct elf_link_hash_entry *h;
1392 unsigned long r_symndx;
1393 unsigned char tls_type;
1394
1395 r_symndx = ELF32_R_SYM (rel->r_info);
1396 if (r_symndx < symtab_hdr->sh_info)
1397 h = NULL;
1398 else
1399 {
1400 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1401 while (h->root.type == bfd_link_hash_indirect
1402 || h->root.type == bfd_link_hash_warning)
1403 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1404
1405 /* PR15323, ref flags aren't set for references in the same
1406 object. */
1407 h->root.non_ir_ref = 1;
1408 }
1409
1410 switch (ELF32_R_TYPE (rel->r_info))
1411 {
1412 case R_OR1K_TLS_GD_HI16:
1413 case R_OR1K_TLS_GD_LO16:
1414 tls_type = TLS_GD;
1415 break;
1416 case R_OR1K_TLS_LDM_HI16:
1417 case R_OR1K_TLS_LDM_LO16:
1418 case R_OR1K_TLS_LDO_HI16:
1419 case R_OR1K_TLS_LDO_LO16:
1420 tls_type = TLS_LD;
1421 break;
1422 case R_OR1K_TLS_IE_HI16:
1423 case R_OR1K_TLS_IE_LO16:
1424 tls_type = TLS_IE;
1425 break;
1426 case R_OR1K_TLS_LE_HI16:
1427 case R_OR1K_TLS_LE_LO16:
1428 tls_type = TLS_LE;
1429 break;
1430 default:
1431 tls_type = TLS_NONE;
1432 }
1433
1434 /* Record TLS type. */
1435 if (h != NULL)
1436 ((struct elf_or1k_link_hash_entry *) h)->tls_type = tls_type;
1437 else
1438 {
1439 unsigned char *local_tls_type;
1440
1441 /* This is a TLS type record for a local symbol. */
1442 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (abfd);
1443 if (local_tls_type == NULL)
1444 {
1445 bfd_size_type size;
1446
1447 size = symtab_hdr->sh_info;
1448 local_tls_type = bfd_zalloc (abfd, size);
1449 if (local_tls_type == NULL)
1450 return FALSE;
1451 elf_or1k_local_tls_type (abfd) = local_tls_type;
1452 }
1453 local_tls_type[r_symndx] = tls_type;
1454 }
1455
1456 switch (ELF32_R_TYPE (rel->r_info))
1457 {
1458 /* This relocation describes the C++ object vtable hierarchy.
1459 Reconstruct it for later use during GC. */
1460 case R_OR1K_GNU_VTINHERIT:
1461 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1462 return FALSE;
1463 break;
1464
1465 /* This relocation describes which C++ vtable entries are actually
1466 used. Record for later use during GC. */
1467 case R_OR1K_GNU_VTENTRY:
1468 BFD_ASSERT (h != NULL);
1469 if (h != NULL
1470 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1471 return FALSE;
1472 break;
1473
1474 /* This relocation requires .plt entry. */
1475 case R_OR1K_PLT26:
1476 if (h != NULL)
1477 {
1478 h->needs_plt = 1;
1479 h->plt.refcount += 1;
1480 }
1481 break;
1482
1483 case R_OR1K_GOT16:
1484 case R_OR1K_GOTOFF_HI16:
1485 case R_OR1K_GOTOFF_LO16:
1486 case R_OR1K_TLS_GD_HI16:
1487 case R_OR1K_TLS_GD_LO16:
1488 case R_OR1K_TLS_IE_HI16:
1489 case R_OR1K_TLS_IE_LO16:
1490 if (htab->root.sgot == NULL)
1491 {
1492 if (dynobj == NULL)
1493 htab->root.dynobj = dynobj = abfd;
1494 if (!_bfd_elf_create_got_section (dynobj, info))
1495 return FALSE;
1496 }
1497
1498 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_HI16 &&
1499 ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_LO16)
1500 {
1501 if (h != NULL)
1502 h->got.refcount += 1;
1503 else
1504 {
1505 bfd_signed_vma *local_got_refcounts;
1506
1507 /* This is a global offset table entry for a local symbol. */
1508 local_got_refcounts = elf_local_got_refcounts (abfd);
1509 if (local_got_refcounts == NULL)
1510 {
1511 bfd_size_type size;
1512
1513 size = symtab_hdr->sh_info;
1514 size *= sizeof (bfd_signed_vma);
1515 local_got_refcounts = bfd_zalloc (abfd, size);
1516 if (local_got_refcounts == NULL)
1517 return FALSE;
1518 elf_local_got_refcounts (abfd) = local_got_refcounts;
1519 }
1520 local_got_refcounts[r_symndx] += 1;
1521 }
1522 }
1523 break;
1524
1525 case R_OR1K_INSN_REL_26:
1526 case R_OR1K_HI_16_IN_INSN:
1527 case R_OR1K_LO_16_IN_INSN:
1528 case R_OR1K_32:
1529 /* R_OR1K_16? */
1530 {
1531 if (h != NULL && !bfd_link_pic (info))
1532 {
1533 /* We may need a copy reloc. */
1534 h->non_got_ref = 1;
1535
1536 /* We may also need a .plt entry. */
1537 h->plt.refcount += 1;
1538 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26)
1539 h->pointer_equality_needed = 1;
1540 }
1541
1542 /* If we are creating a shared library, and this is a reloc
1543 against a global symbol, or a non PC relative reloc
1544 against a local symbol, then we need to copy the reloc
1545 into the shared library. However, if we are linking with
1546 -Bsymbolic, we do not need to copy a reloc against a
1547 global symbol which is defined in an object we are
1548 including in the link (i.e., DEF_REGULAR is set). At
1549 this point we have not seen all the input files, so it is
1550 possible that DEF_REGULAR is not set now but will be set
1551 later (it is never cleared). In case of a weak definition,
1552 DEF_REGULAR may be cleared later by a strong definition in
1553 a shared library. We account for that possibility below by
1554 storing information in the relocs_copied field of the hash
1555 table entry. A similar situation occurs when creating
1556 shared libraries and symbol visibility changes render the
1557 symbol local.
1558
1559 If on the other hand, we are creating an executable, we
1560 may need to keep relocations for symbols satisfied by a
1561 dynamic library if we manage to avoid copy relocs for the
1562 symbol. */
1563
1564 if ((bfd_link_pic (info)
1565 && (sec->flags & SEC_ALLOC) != 0
1566 && (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26
1567 || (h != NULL
1568 && (!SYMBOLIC_BIND (info, h)
1569 || h->root.type == bfd_link_hash_defweak
1570 || !h->def_regular))))
1571 || (!bfd_link_pic (info)
1572 && (sec->flags & SEC_ALLOC) != 0
1573 && h != NULL
1574 && (h->root.type == bfd_link_hash_defweak
1575 || !h->def_regular)))
1576 {
1577 struct elf_or1k_dyn_relocs *p;
1578 struct elf_or1k_dyn_relocs **head;
1579
1580 /* When creating a shared object, we must copy these
1581 relocs into the output file. We create a reloc
1582 section in dynobj and make room for the reloc. */
1583 if (sreloc == NULL)
1584 {
1585 const char *name;
1586 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1587 unsigned int shnam = _bfd_elf_single_rel_hdr (sec)->sh_name;
1588
1589 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
1590 if (name == NULL)
1591 return FALSE;
1592
1593 if (strncmp (name, ".rela", 5) != 0
1594 || strcmp (bfd_get_section_name (abfd, sec),
1595 name + 5) != 0)
1596 {
1597 _bfd_error_handler
1598 /* xgettext:c-format */
1599 (_("%B: bad relocation section name `%s\'"),
1600 abfd, name);
1601 }
1602
1603 if (htab->root.dynobj == NULL)
1604 htab->root.dynobj = abfd;
1605 dynobj = htab->root.dynobj;
1606
1607 sreloc = bfd_get_section_by_name (dynobj, name);
1608 if (sreloc == NULL)
1609 {
1610 sreloc = _bfd_elf_make_dynamic_reloc_section
1611 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
1612
1613 if (sreloc == NULL)
1614 return FALSE;
1615 }
1616 elf_section_data (sec)->sreloc = sreloc;
1617 }
1618
1619 /* If this is a global symbol, we count the number of
1620 relocations we need for this symbol. */
1621 if (h != NULL)
1622 head = &((struct elf_or1k_link_hash_entry *) h)->dyn_relocs;
1623 else
1624 {
1625 /* Track dynamic relocs needed for local syms too.
1626 We really need local syms available to do this
1627 easily. Oh well. */
1628
1629 asection *s;
1630 Elf_Internal_Sym *isym;
1631 void *vpp;
1632
1633 isym = bfd_sym_from_r_symndx (&htab->sym_sec,
1634 abfd, r_symndx);
1635 if (isym == NULL)
1636 return FALSE;
1637
1638 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1639 if (s == NULL)
1640 return FALSE;
1641
1642 vpp = &elf_section_data (s)->local_dynrel;
1643 head = (struct elf_or1k_dyn_relocs **) vpp;
1644 }
1645
1646 p = *head;
1647 if (p == NULL || p->sec != sec)
1648 {
1649 bfd_size_type amt = sizeof *p;
1650 p = ((struct elf_or1k_dyn_relocs *)
1651 bfd_alloc (htab->root.dynobj, amt));
1652 if (p == NULL)
1653 return FALSE;
1654 p->next = *head;
1655 *head = p;
1656 p->sec = sec;
1657 p->count = 0;
1658 p->pc_count = 0;
1659 }
1660
1661 p->count += 1;
1662 if (ELF32_R_TYPE (rel->r_info) == R_OR1K_INSN_REL_26)
1663 p->pc_count += 1;
1664 }
1665 }
1666 break;
1667 }
1668 }
1669
1670 return TRUE;
1671 }
1672
1673 /* Finish up the dynamic sections. */
1674
1675 static bfd_boolean
1676 or1k_elf_finish_dynamic_sections (bfd *output_bfd,
1677 struct bfd_link_info *info)
1678 {
1679 bfd *dynobj;
1680 asection *sdyn, *sgot;
1681 struct elf_or1k_link_hash_table *htab;
1682
1683 htab = or1k_elf_hash_table (info);
1684 if (htab == NULL)
1685 return FALSE;
1686
1687 dynobj = htab->root.dynobj;
1688
1689 sgot = htab->root.sgotplt;
1690 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1691
1692 if (htab->root.dynamic_sections_created)
1693 {
1694 asection *splt;
1695 Elf32_External_Dyn *dyncon, *dynconend;
1696
1697 BFD_ASSERT (sgot != NULL && sdyn != NULL);
1698
1699 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1700 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1701
1702 for (; dyncon < dynconend; dyncon++)
1703 {
1704 Elf_Internal_Dyn dyn;
1705 asection *s;
1706
1707 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1708
1709 switch (dyn.d_tag)
1710 {
1711 default:
1712 continue;
1713
1714 case DT_PLTGOT:
1715 s = htab->root.sgotplt;
1716 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
1717 break;
1718
1719 case DT_JMPREL:
1720 s = htab->root.srelplt;
1721 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
1722 break;
1723
1724 case DT_PLTRELSZ:
1725 s = htab->root.srelplt;
1726 dyn.d_un.d_val = s->size;
1727 break;
1728 }
1729 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1730 }
1731
1732
1733 /* Fill in the first entry in the procedure linkage table. */
1734 splt = htab->root.splt;
1735 if (splt && splt->size > 0)
1736 {
1737 if (bfd_link_pic (info))
1738 {
1739 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0,
1740 splt->contents);
1741 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1,
1742 splt->contents + 4);
1743 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2,
1744 splt->contents + 8);
1745 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3,
1746 splt->contents + 12);
1747 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4,
1748 splt->contents + 16);
1749 }
1750 else
1751 {
1752 unsigned long addr;
1753 /* addr = .got + 4 */
1754 addr = sgot->output_section->vma + sgot->output_offset + 4;
1755 bfd_put_32 (output_bfd,
1756 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1757 splt->contents);
1758 bfd_put_32 (output_bfd,
1759 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1760 splt->contents + 4);
1761 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1762 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1763 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1764 }
1765
1766 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
1767 }
1768 }
1769
1770 /* Set the first entry in the global offset table to the address of
1771 the dynamic section. */
1772 if (sgot && sgot->size > 0)
1773 {
1774 if (sdyn == NULL)
1775 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1776 else
1777 bfd_put_32 (output_bfd,
1778 sdyn->output_section->vma + sdyn->output_offset,
1779 sgot->contents);
1780 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1781 }
1782
1783 if (htab->root.sgot && htab->root.sgot->size > 0)
1784 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize = 4;
1785
1786 return TRUE;
1787 }
1788
1789 /* Finish up dynamic symbol handling. We set the contents of various
1790 dynamic sections here. */
1791
1792 static bfd_boolean
1793 or1k_elf_finish_dynamic_symbol (bfd *output_bfd,
1794 struct bfd_link_info *info,
1795 struct elf_link_hash_entry *h,
1796 Elf_Internal_Sym *sym)
1797 {
1798 struct elf_or1k_link_hash_table *htab;
1799 bfd_byte *loc;
1800
1801 htab = or1k_elf_hash_table (info);
1802 if (htab == NULL)
1803 return FALSE;
1804
1805 if (h->plt.offset != (bfd_vma) -1)
1806 {
1807 asection *splt;
1808 asection *sgot;
1809 asection *srela;
1810
1811 bfd_vma plt_index;
1812 bfd_vma got_offset;
1813 bfd_vma got_addr;
1814 Elf_Internal_Rela rela;
1815
1816 /* This symbol has an entry in the procedure linkage table. Set
1817 it up. */
1818 BFD_ASSERT (h->dynindx != -1);
1819
1820 splt = htab->root.splt;
1821 sgot = htab->root.sgotplt;
1822 srela = htab->root.srelplt;
1823 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1824
1825 /* Get the index in the procedure linkage table which
1826 corresponds to this symbol. This is the index of this symbol
1827 in all the symbols for which we are making plt entries. The
1828 first entry in the procedure linkage table is reserved. */
1829 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1830
1831 /* Get the offset into the .got table of the entry that
1832 corresponds to this function. Each .got entry is 4 bytes.
1833 The first three are reserved. */
1834 got_offset = (plt_index + 3) * 4;
1835 got_addr = got_offset;
1836
1837 /* Fill in the entry in the procedure linkage table. */
1838 if (! bfd_link_pic (info))
1839 {
1840 got_addr += htab->root.sgotplt->output_section->vma
1841 + htab->root.sgotplt->output_offset;
1842 bfd_put_32 (output_bfd, PLT_ENTRY_WORD0 | ((got_addr >> 16) & 0xffff),
1843 splt->contents + h->plt.offset);
1844 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1 | (got_addr & 0xffff),
1845 splt->contents + h->plt.offset + 4);
1846 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
1847 splt->contents + h->plt.offset + 8);
1848 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
1849 splt->contents + h->plt.offset + 12);
1850 bfd_put_32 (output_bfd, PLT_ENTRY_WORD4
1851 | plt_index * sizeof (Elf32_External_Rela),
1852 splt->contents + h->plt.offset + 16);
1853 }
1854 else
1855 {
1856 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD0 | (got_addr & 0xffff),
1857 splt->contents + h->plt.offset);
1858 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD1
1859 | plt_index * sizeof (Elf32_External_Rela),
1860 splt->contents + h->plt.offset + 4);
1861 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
1862 splt->contents + h->plt.offset + 8);
1863 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
1864 splt->contents + h->plt.offset + 12);
1865 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
1866 splt->contents + h->plt.offset + 16);
1867 }
1868
1869 /* Fill in the entry in the global offset table. */
1870 bfd_put_32 (output_bfd,
1871 (splt->output_section->vma
1872 + splt->output_offset), /* Same offset. */
1873 sgot->contents + got_offset);
1874
1875 /* Fill in the entry in the .rela.plt section. */
1876 rela.r_offset = (sgot->output_section->vma
1877 + sgot->output_offset
1878 + got_offset);
1879 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT);
1880 rela.r_addend = 0;
1881 loc = srela->contents;
1882 loc += plt_index * sizeof (Elf32_External_Rela);
1883 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1884
1885 if (!h->def_regular)
1886 {
1887 /* Mark the symbol as undefined, rather than as defined in
1888 the .plt section. Leave the value alone. */
1889 sym->st_shndx = SHN_UNDEF;
1890 }
1891
1892 }
1893
1894 if (h->got.offset != (bfd_vma) -1
1895 && (h->got.offset & 2) == 0) /* Homemade TLS check. */
1896 {
1897 asection *sgot;
1898 asection *srela;
1899 Elf_Internal_Rela rela;
1900
1901 /* This symbol has an entry in the global offset table. Set it
1902 up. */
1903 sgot = htab->root.sgot;
1904 srela = htab->root.srelgot;
1905 BFD_ASSERT (sgot != NULL && srela != NULL);
1906
1907 rela.r_offset = (sgot->output_section->vma
1908 + sgot->output_offset
1909 + (h->got.offset &~ 1));
1910
1911 /* If this is a -Bsymbolic link, and the symbol is defined
1912 locally, we just want to emit a RELATIVE reloc. Likewise if
1913 the symbol was forced to be local because of a version file.
1914 The entry in the global offset table will already have been
1915 initialized in the relocate_section function. */
1916 if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
1917 {
1918 rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1919 rela.r_addend = (h->root.u.def.value
1920 + h->root.u.def.section->output_section->vma
1921 + h->root.u.def.section->output_offset);
1922 }
1923 else
1924 {
1925 BFD_ASSERT ((h->got.offset & 1) == 0);
1926 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
1927 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT);
1928 rela.r_addend = 0;
1929 }
1930
1931 loc = srela->contents;
1932 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
1933 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1934 ++srela->reloc_count;
1935 }
1936
1937 if (h->needs_copy)
1938 {
1939 asection *s;
1940 Elf_Internal_Rela rela;
1941
1942 /* This symbols needs a copy reloc. Set it up. */
1943 BFD_ASSERT (h->dynindx != -1
1944 && (h->root.type == bfd_link_hash_defined
1945 || h->root.type == bfd_link_hash_defweak));
1946
1947 rela.r_offset = (h->root.u.def.value
1948 + h->root.u.def.section->output_section->vma
1949 + h->root.u.def.section->output_offset);
1950 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY);
1951 rela.r_addend = 0;
1952 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1953 s = htab->root.sreldynrelro;
1954 else
1955 s = htab->root.srelbss;
1956 loc = s->contents + s->reloc_count * sizeof (Elf32_External_Rela);
1957 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1958 ++s->reloc_count;
1959 }
1960
1961 /* Mark some specially defined symbols as absolute. */
1962 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1963 || h == htab->root.hgot)
1964 sym->st_shndx = SHN_ABS;
1965
1966 return TRUE;
1967 }
1968
1969 static enum elf_reloc_type_class
1970 or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
1971 const asection *rel_sec ATTRIBUTE_UNUSED,
1972 const Elf_Internal_Rela *rela)
1973 {
1974 switch ((int) ELF32_R_TYPE (rela->r_info))
1975 {
1976 case R_OR1K_RELATIVE: return reloc_class_relative;
1977 case R_OR1K_JMP_SLOT: return reloc_class_plt;
1978 case R_OR1K_COPY: return reloc_class_copy;
1979 default: return reloc_class_normal;
1980 }
1981 }
1982
1983 /* Adjust a symbol defined by a dynamic object and referenced by a
1984 regular object. The current definition is in some section of the
1985 dynamic object, but we're not including those sections. We have to
1986 change the definition to something the rest of the link can
1987 understand. */
1988
1989 static bfd_boolean
1990 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1991 struct elf_link_hash_entry *h)
1992 {
1993 struct elf_or1k_link_hash_table *htab;
1994 struct elf_or1k_link_hash_entry *eh;
1995 struct elf_or1k_dyn_relocs *p;
1996 bfd *dynobj;
1997 asection *s, *srel;
1998
1999 dynobj = elf_hash_table (info)->dynobj;
2000
2001 /* Make sure we know what is going on here. */
2002 BFD_ASSERT (dynobj != NULL
2003 && (h->needs_plt
2004 || h->u.weakdef != NULL
2005 || (h->def_dynamic
2006 && h->ref_regular
2007 && !h->def_regular)));
2008
2009 /* If this is a function, put it in the procedure linkage table. We
2010 will fill in the contents of the procedure linkage table later,
2011 when we know the address of the .got section. */
2012 if (h->type == STT_FUNC
2013 || h->needs_plt)
2014 {
2015 if (! bfd_link_pic (info)
2016 && !h->def_dynamic
2017 && !h->ref_dynamic
2018 && h->root.type != bfd_link_hash_undefweak
2019 && h->root.type != bfd_link_hash_undefined)
2020 {
2021 /* This case can occur if we saw a PLT reloc in an input
2022 file, but the symbol was never referred to by a dynamic
2023 object. In such a case, we don't actually need to build
2024 a procedure linkage table, and we can just do a PCREL
2025 reloc instead. */
2026 h->plt.offset = (bfd_vma) -1;
2027 h->needs_plt = 0;
2028 }
2029
2030 return TRUE;
2031 }
2032 else
2033 h->plt.offset = (bfd_vma) -1;
2034
2035 /* If this is a weak symbol, and there is a real definition, the
2036 processor independent code will have arranged for us to see the
2037 real definition first, and we can just use the same value. */
2038 if (h->u.weakdef != NULL)
2039 {
2040 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2041 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2042 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2043 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2044 return TRUE;
2045 }
2046
2047 /* This is a reference to a symbol defined by a dynamic object which
2048 is not a function. */
2049
2050 /* If we are creating a shared library, we must presume that the
2051 only references to the symbol are via the global offset table.
2052 For such cases we need not do anything here; the relocations will
2053 be handled correctly by relocate_section. */
2054 if (bfd_link_pic (info))
2055 return TRUE;
2056
2057 /* If there are no references to this symbol that do not use the
2058 GOT, we don't need to generate a copy reloc. */
2059 if (!h->non_got_ref)
2060 return TRUE;
2061
2062 /* If -z nocopyreloc was given, we won't generate them either. */
2063 if (info->nocopyreloc)
2064 {
2065 h->non_got_ref = 0;
2066 return TRUE;
2067 }
2068
2069 eh = (struct elf_or1k_link_hash_entry *) h;
2070 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2071 {
2072 s = p->sec->output_section;
2073 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2074 break;
2075 }
2076
2077 /* If we didn't find any dynamic relocs in sections which needs the
2078 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2079 the copy reloc. */
2080 if (p == NULL)
2081 {
2082 h->non_got_ref = 0;
2083 return TRUE;
2084 }
2085
2086 /* We must allocate the symbol in our .dynbss section, which will
2087 become part of the .bss section of the executable. There will be
2088 an entry for this symbol in the .dynsym section. The dynamic
2089 object will contain position independent code, so all references
2090 from the dynamic object to this symbol will go through the global
2091 offset table. The dynamic linker will use the .dynsym entry to
2092 determine the address it must put in the global offset table, so
2093 both the dynamic object and the regular object will refer to the
2094 same memory location for the variable. */
2095
2096 htab = or1k_elf_hash_table (info);
2097 if (htab == NULL)
2098 return FALSE;
2099
2100 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2101 to copy the initial value out of the dynamic object and into the
2102 runtime process image. We need to remember the offset into the
2103 .rela.bss section we are going to use. */
2104 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2105 {
2106 s = htab->root.sdynrelro;
2107 srel = htab->root.sreldynrelro;
2108 }
2109 else
2110 {
2111 s = htab->root.sdynbss;
2112 srel = htab->root.srelbss;
2113 }
2114 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2115 {
2116 srel->size += sizeof (Elf32_External_Rela);
2117 h->needs_copy = 1;
2118 }
2119
2120 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2121 }
2122
2123 /* Allocate space in .plt, .got and associated reloc sections for
2124 dynamic relocs. */
2125
2126 static bfd_boolean
2127 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2128 {
2129 struct bfd_link_info *info;
2130 struct elf_or1k_link_hash_table *htab;
2131 struct elf_or1k_link_hash_entry *eh;
2132 struct elf_or1k_dyn_relocs *p;
2133
2134 if (h->root.type == bfd_link_hash_indirect)
2135 return TRUE;
2136
2137 info = (struct bfd_link_info *) inf;
2138 htab = or1k_elf_hash_table (info);
2139 if (htab == NULL)
2140 return FALSE;
2141
2142 eh = (struct elf_or1k_link_hash_entry *) h;
2143
2144 if (htab->root.dynamic_sections_created
2145 && h->plt.refcount > 0)
2146 {
2147 /* Make sure this symbol is output as a dynamic symbol.
2148 Undefined weak syms won't yet be marked as dynamic. */
2149 if (h->dynindx == -1
2150 && !h->forced_local)
2151 {
2152 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2153 return FALSE;
2154 }
2155
2156 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2157 {
2158 asection *s = htab->root.splt;
2159
2160 /* If this is the first .plt entry, make room for the special
2161 first entry. */
2162 if (s->size == 0)
2163 s->size = PLT_ENTRY_SIZE;
2164
2165 h->plt.offset = s->size;
2166
2167 /* If this symbol is not defined in a regular file, and we are
2168 not generating a shared library, then set the symbol to this
2169 location in the .plt. This is required to make function
2170 pointers compare as equal between the normal executable and
2171 the shared library. */
2172 if (! bfd_link_pic (info)
2173 && !h->def_regular)
2174 {
2175 h->root.u.def.section = s;
2176 h->root.u.def.value = h->plt.offset;
2177 }
2178
2179 /* Make room for this entry. */
2180 s->size += PLT_ENTRY_SIZE;
2181
2182 /* We also need to make an entry in the .got.plt section, which
2183 will be placed in the .got section by the linker script. */
2184 htab->root.sgotplt->size += 4;
2185
2186 /* We also need to make an entry in the .rel.plt section. */
2187 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2188 }
2189 else
2190 {
2191 h->plt.offset = (bfd_vma) -1;
2192 h->needs_plt = 0;
2193 }
2194 }
2195 else
2196 {
2197 h->plt.offset = (bfd_vma) -1;
2198 h->needs_plt = 0;
2199 }
2200
2201 if (h->got.refcount > 0)
2202 {
2203 asection *s;
2204 bfd_boolean dyn;
2205 unsigned char tls_type;
2206
2207 /* Make sure this symbol is output as a dynamic symbol.
2208 Undefined weak syms won't yet be marked as dynamic. */
2209 if (h->dynindx == -1
2210 && !h->forced_local)
2211 {
2212 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2213 return FALSE;
2214 }
2215
2216 s = htab->root.sgot;
2217
2218 h->got.offset = s->size;
2219
2220 tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type;
2221
2222 /* TLS GD requires two GOT and two relocs. */
2223 if (tls_type == TLS_GD)
2224 s->size += 8;
2225 else
2226 s->size += 4;
2227 dyn = htab->root.dynamic_sections_created;
2228 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
2229 {
2230 if (tls_type == TLS_GD)
2231 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2232 else
2233 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2234 }
2235 }
2236 else
2237 h->got.offset = (bfd_vma) -1;
2238
2239 if (eh->dyn_relocs == NULL)
2240 return TRUE;
2241
2242 /* In the shared -Bsymbolic case, discard space allocated for
2243 dynamic pc-relative relocs against symbols which turn out to be
2244 defined in regular objects. For the normal shared case, discard
2245 space for pc-relative relocs that have become local due to symbol
2246 visibility changes. */
2247
2248 if (bfd_link_pic (info))
2249 {
2250 if (SYMBOL_CALLS_LOCAL (info, h))
2251 {
2252 struct elf_or1k_dyn_relocs **pp;
2253
2254 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2255 {
2256 p->count -= p->pc_count;
2257 p->pc_count = 0;
2258 if (p->count == 0)
2259 *pp = p->next;
2260 else
2261 pp = &p->next;
2262 }
2263 }
2264
2265 /* Also discard relocs on undefined weak syms with non-default
2266 visibility. */
2267 if (eh->dyn_relocs != NULL
2268 && h->root.type == bfd_link_hash_undefweak)
2269 {
2270 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2271 eh->dyn_relocs = NULL;
2272
2273 /* Make sure undefined weak symbols are output as a dynamic
2274 symbol in PIEs. */
2275 else if (h->dynindx == -1
2276 && !h->forced_local)
2277 {
2278 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2279 return FALSE;
2280 }
2281 }
2282 }
2283 else
2284 {
2285 /* For the non-shared case, discard space for relocs against
2286 symbols which turn out to need copy relocs or are not
2287 dynamic. */
2288
2289 if (!h->non_got_ref
2290 && ((h->def_dynamic
2291 && !h->def_regular)
2292 || (htab->root.dynamic_sections_created
2293 && (h->root.type == bfd_link_hash_undefweak
2294 || h->root.type == bfd_link_hash_undefined))))
2295 {
2296 /* Make sure this symbol is output as a dynamic symbol.
2297 Undefined weak syms won't yet be marked as dynamic. */
2298 if (h->dynindx == -1
2299 && !h->forced_local)
2300 {
2301 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2302 return FALSE;
2303 }
2304
2305 /* If that succeeded, we know we'll be keeping all the
2306 relocs. */
2307 if (h->dynindx != -1)
2308 goto keep;
2309 }
2310
2311 eh->dyn_relocs = NULL;
2312
2313 keep: ;
2314 }
2315
2316 /* Finally, allocate space. */
2317 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2318 {
2319 asection *sreloc = elf_section_data (p->sec)->sreloc;
2320 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2321 }
2322
2323 return TRUE;
2324 }
2325
2326 /* Find any dynamic relocs that apply to read-only sections. */
2327
2328 static bfd_boolean
2329 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2330 {
2331 struct elf_or1k_link_hash_entry *eh;
2332 struct elf_or1k_dyn_relocs *p;
2333
2334 eh = (struct elf_or1k_link_hash_entry *) h;
2335 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2336 {
2337 asection *s = p->sec->output_section;
2338
2339 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2340 {
2341 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2342
2343 info->flags |= DF_TEXTREL;
2344
2345 /* Not an error, just cut short the traversal. */
2346 return FALSE;
2347 }
2348 }
2349 return TRUE;
2350 }
2351
2352 /* Set the sizes of the dynamic sections. */
2353
2354 static bfd_boolean
2355 or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2356 struct bfd_link_info *info)
2357 {
2358 struct elf_or1k_link_hash_table *htab;
2359 bfd *dynobj;
2360 asection *s;
2361 bfd_boolean relocs;
2362 bfd *ibfd;
2363
2364 htab = or1k_elf_hash_table (info);
2365 if (htab == NULL)
2366 return FALSE;
2367
2368 dynobj = htab->root.dynobj;
2369 BFD_ASSERT (dynobj != NULL);
2370
2371 if (htab->root.dynamic_sections_created)
2372 {
2373 /* Set the contents of the .interp section to the interpreter. */
2374 if (bfd_link_executable (info) && !info->nointerp)
2375 {
2376 s = bfd_get_section_by_name (dynobj, ".interp");
2377 BFD_ASSERT (s != NULL);
2378 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2379 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2380 }
2381 }
2382
2383 /* Set up .got offsets for local syms, and space for local dynamic
2384 relocs. */
2385 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2386 {
2387 bfd_signed_vma *local_got;
2388 bfd_signed_vma *end_local_got;
2389 bfd_size_type locsymcount;
2390 Elf_Internal_Shdr *symtab_hdr;
2391 unsigned char *local_tls_type;
2392 asection *srel;
2393
2394 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2395 continue;
2396
2397 for (s = ibfd->sections; s != NULL; s = s->next)
2398 {
2399 struct elf_or1k_dyn_relocs *p;
2400
2401 for (p = ((struct elf_or1k_dyn_relocs *)
2402 elf_section_data (s)->local_dynrel);
2403 p != NULL;
2404 p = p->next)
2405 {
2406 if (! bfd_is_abs_section (p->sec)
2407 && bfd_is_abs_section (p->sec->output_section))
2408 {
2409 /* Input section has been discarded, either because
2410 it is a copy of a linkonce section or due to
2411 linker script /DISCARD/, so we'll be discarding
2412 the relocs too. */
2413 }
2414 else if (p->count != 0)
2415 {
2416 srel = elf_section_data (p->sec)->sreloc;
2417 srel->size += p->count * sizeof (Elf32_External_Rela);
2418 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2419 info->flags |= DF_TEXTREL;
2420 }
2421 }
2422 }
2423
2424 local_got = elf_local_got_refcounts (ibfd);
2425 if (!local_got)
2426 continue;
2427
2428 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2429 locsymcount = symtab_hdr->sh_info;
2430 end_local_got = local_got + locsymcount;
2431 s = htab->root.sgot;
2432 srel = htab->root.srelgot;
2433 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd);
2434 for (; local_got < end_local_got; ++local_got)
2435 {
2436 if (*local_got > 0)
2437 {
2438 *local_got = s->size;
2439
2440 /* TLS GD requires two GOT and two relocs. */
2441 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2442 s->size += 8;
2443 else
2444 s->size += 4;
2445 if (bfd_link_pic (info))
2446 {
2447 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2448 srel->size += 2 * sizeof (Elf32_External_Rela);
2449 else
2450 srel->size += sizeof (Elf32_External_Rela);
2451 }
2452 }
2453 else
2454
2455 *local_got = (bfd_vma) -1;
2456
2457 if (local_tls_type)
2458 ++local_tls_type;
2459 }
2460 }
2461
2462 /* Allocate global sym .plt and .got entries, and space for global
2463 sym dynamic relocs. */
2464 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2465
2466 /* We now have determined the sizes of the various dynamic sections.
2467 Allocate memory for them. */
2468 relocs = FALSE;
2469 for (s = dynobj->sections; s != NULL; s = s->next)
2470 {
2471 if ((s->flags & SEC_LINKER_CREATED) == 0)
2472 continue;
2473
2474 if (s == htab->root.splt
2475 || s == htab->root.sgot
2476 || s == htab->root.sgotplt
2477 || s == htab->root.sdynbss
2478 || s == htab->root.sdynrelro)
2479 {
2480 /* Strip this section if we don't need it; see the
2481 comment below. */
2482 }
2483 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2484 {
2485 if (s->size != 0 && s != htab->root.srelplt)
2486 relocs = TRUE;
2487
2488 /* We use the reloc_count field as a counter if we need
2489 to copy relocs into the output file. */
2490 s->reloc_count = 0;
2491 }
2492 else
2493 /* It's not one of our sections, so don't allocate space. */
2494 continue;
2495
2496 if (s->size == 0)
2497 {
2498 /* If we don't need this section, strip it from the
2499 output file. This is mostly to handle .rela.bss and
2500 .rela.plt. We must create both sections in
2501 create_dynamic_sections, because they must be created
2502 before the linker maps input sections to output
2503 sections. The linker does that before
2504 adjust_dynamic_symbol is called, and it is that
2505 function which decides whether anything needs to go
2506 into these sections. */
2507 s->flags |= SEC_EXCLUDE;
2508 continue;
2509 }
2510
2511 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2512 continue;
2513
2514 /* Allocate memory for the section contents. We use bfd_zalloc
2515 here in case unused entries are not reclaimed before the
2516 section's contents are written out. This should not happen,
2517 but this way if it does, we get a R_OR1K_NONE reloc instead
2518 of garbage. */
2519 s->contents = bfd_zalloc (dynobj, s->size);
2520
2521 if (s->contents == NULL)
2522 return FALSE;
2523 }
2524
2525 if (htab->root.dynamic_sections_created)
2526 {
2527 /* Add some entries to the .dynamic section. We fill in the
2528 values later, in or1k_elf_finish_dynamic_sections, but we
2529 must add the entries now so that we get the correct size for
2530 the .dynamic section. The DT_DEBUG entry is filled in by the
2531 dynamic linker and used by the debugger. */
2532 #define add_dynamic_entry(TAG, VAL) \
2533 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2534
2535 if (bfd_link_executable (info))
2536 {
2537 if (! add_dynamic_entry (DT_DEBUG, 0))
2538 return FALSE;
2539 }
2540
2541 if (htab->root.splt->size != 0)
2542 {
2543 if (! add_dynamic_entry (DT_PLTGOT, 0)
2544 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2545 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2546 || ! add_dynamic_entry (DT_JMPREL, 0))
2547 return FALSE;
2548 }
2549
2550 if (relocs)
2551 {
2552 if (! add_dynamic_entry (DT_RELA, 0)
2553 || ! add_dynamic_entry (DT_RELASZ, 0)
2554 || ! add_dynamic_entry (DT_RELAENT,
2555 sizeof (Elf32_External_Rela)))
2556 return FALSE;
2557
2558 /* If any dynamic relocs apply to a read-only section,
2559 then we need a DT_TEXTREL entry. */
2560 if ((info->flags & DF_TEXTREL) == 0)
2561 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2562 info);
2563
2564 if ((info->flags & DF_TEXTREL) != 0)
2565 {
2566 if (! add_dynamic_entry (DT_TEXTREL, 0))
2567 return FALSE;
2568 }
2569 }
2570 }
2571
2572 #undef add_dynamic_entry
2573 return TRUE;
2574 }
2575
2576 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2577
2578 static void
2579 or1k_elf_copy_indirect_symbol (struct bfd_link_info *info,
2580 struct elf_link_hash_entry *dir,
2581 struct elf_link_hash_entry *ind)
2582 {
2583 struct elf_or1k_link_hash_entry * edir;
2584 struct elf_or1k_link_hash_entry * eind;
2585
2586 edir = (struct elf_or1k_link_hash_entry *) dir;
2587 eind = (struct elf_or1k_link_hash_entry *) ind;
2588
2589 if (eind->dyn_relocs != NULL)
2590 {
2591 if (edir->dyn_relocs != NULL)
2592 {
2593 struct elf_or1k_dyn_relocs **pp;
2594 struct elf_or1k_dyn_relocs *p;
2595
2596 /* Add reloc counts against the indirect sym to the direct sym
2597 list. Merge any entries against the same section. */
2598 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2599 {
2600 struct elf_or1k_dyn_relocs *q;
2601
2602 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2603 if (q->sec == p->sec)
2604 {
2605 q->pc_count += p->pc_count;
2606 q->count += p->count;
2607 *pp = p->next;
2608 break;
2609 }
2610 if (q == NULL)
2611 pp = &p->next;
2612 }
2613 *pp = edir->dyn_relocs;
2614 }
2615
2616 edir->dyn_relocs = eind->dyn_relocs;
2617 eind->dyn_relocs = NULL;
2618 }
2619
2620 if (ind->root.type == bfd_link_hash_indirect)
2621 {
2622 if (dir->got.refcount <= 0)
2623 {
2624 edir->tls_type = eind->tls_type;
2625 eind->tls_type = TLS_UNKNOWN;
2626 }
2627 }
2628
2629 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2630 }
2631
2632 /* Set the right machine number. */
2633
2634 static bfd_boolean
2635 or1k_elf_object_p (bfd *abfd)
2636 {
2637 unsigned long mach = bfd_mach_or1k;
2638
2639 if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY)
2640 mach = bfd_mach_or1knd;
2641
2642 return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach);
2643 }
2644
2645 /* Store the machine number in the flags field. */
2646
2647 static void
2648 or1k_elf_final_write_processing (bfd *abfd,
2649 bfd_boolean linker ATTRIBUTE_UNUSED)
2650 {
2651 switch (bfd_get_mach (abfd))
2652 {
2653 default:
2654 case bfd_mach_or1k:
2655 break;
2656 case bfd_mach_or1knd:
2657 elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY;
2658 break;
2659 }
2660 }
2661
2662 static bfd_boolean
2663 or1k_elf_set_private_flags (bfd *abfd, flagword flags)
2664 {
2665 BFD_ASSERT (!elf_flags_init (abfd)
2666 || elf_elfheader (abfd)->e_flags == flags);
2667
2668 elf_elfheader (abfd)->e_flags = flags;
2669 elf_flags_init (abfd) = TRUE;
2670 return TRUE;
2671 }
2672
2673 /* Make sure all input files are consistent with respect to
2674 EF_OR1K_NODELAY flag setting. */
2675
2676 static bfd_boolean
2677 elf32_or1k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
2678 {
2679 bfd *obfd = info->output_bfd;
2680 flagword out_flags;
2681 flagword in_flags;
2682
2683 in_flags = elf_elfheader (ibfd)->e_flags;
2684 out_flags = elf_elfheader (obfd)->e_flags;
2685
2686 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2687 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2688 return TRUE;
2689
2690 if (!elf_flags_init (obfd))
2691 {
2692 elf_flags_init (obfd) = TRUE;
2693 elf_elfheader (obfd)->e_flags = in_flags;
2694
2695 return TRUE;
2696 }
2697
2698 if (in_flags == out_flags)
2699 return TRUE;
2700
2701 if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY))
2702 {
2703 _bfd_error_handler
2704 (_("%B: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd);
2705
2706 bfd_set_error (bfd_error_bad_value);
2707 return FALSE;
2708 }
2709
2710 return TRUE;
2711
2712 }
2713
2714 #define ELF_ARCH bfd_arch_or1k
2715 #define ELF_MACHINE_CODE EM_OR1K
2716 #define ELF_TARGET_ID OR1K_ELF_DATA
2717 #define ELF_MAXPAGESIZE 0x2000
2718
2719 #define TARGET_BIG_SYM or1k_elf32_vec
2720 #define TARGET_BIG_NAME "elf32-or1k"
2721
2722 #define elf_info_to_howto_rel NULL
2723 #define elf_info_to_howto or1k_info_to_howto_rela
2724 #define elf_backend_relocate_section or1k_elf_relocate_section
2725 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2726 #define elf_backend_gc_sweep_hook or1k_elf_gc_sweep_hook
2727 #define elf_backend_check_relocs or1k_elf_check_relocs
2728 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2729 #define elf_backend_can_gc_sections 1
2730 #define elf_backend_rela_normal 1
2731
2732 #define bfd_elf32_mkobject elf_or1k_mkobject
2733
2734 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2735 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2736 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2737 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2738
2739 #define elf_backend_object_p or1k_elf_object_p
2740 #define elf_backend_final_write_processing or1k_elf_final_write_processing
2741 #define elf_backend_can_refcount 1
2742
2743 #define elf_backend_plt_readonly 1
2744 #define elf_backend_want_got_plt 1
2745 #define elf_backend_want_plt_sym 0
2746 #define elf_backend_got_header_size 12
2747 #define elf_backend_dtrel_excludes_plt 1
2748 #define elf_backend_want_dynrelro 1
2749
2750 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2751 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2752 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
2753 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2754 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2755 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2756 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2757
2758 #include "elf32-target.h"
GDB Binutils - Deliverables
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