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Delete duplicate target short-cuts to dynamic sections
[deliverable/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 case DT_RELASZ:
1734 /* My reading of the SVR4 ABI indicates that the
1735 procedure linkage table relocs (DT_JMPREL) should be
1736 included in the overall relocs (DT_RELA). This is
1737 what Solaris does. However, UnixWare can not handle
1738 that case. Therefore, we override the DT_RELASZ entry
1739 here to make it not include the JMPREL relocs. Since
1740 the linker script arranges for .rela.plt to follow all
1741 other relocation sections, we don't have to worry
1742 about changing the DT_RELA entry. */
1743 if (htab->root.srelplt != NULL)
1744 {
1745 s = htab->root.srelplt;
1746 dyn.d_un.d_val -= s->size;
1747 }
1748 break;
1749 }
1750 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1751 }
1752
1753
1754 /* Fill in the first entry in the procedure linkage table. */
1755 splt = htab->root.splt;
1756 if (splt && splt->size > 0)
1757 {
1758 if (bfd_link_pic (info))
1759 {
1760 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0,
1761 splt->contents);
1762 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1,
1763 splt->contents + 4);
1764 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2,
1765 splt->contents + 8);
1766 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3,
1767 splt->contents + 12);
1768 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4,
1769 splt->contents + 16);
1770 }
1771 else
1772 {
1773 unsigned long addr;
1774 /* addr = .got + 4 */
1775 addr = sgot->output_section->vma + sgot->output_offset + 4;
1776 bfd_put_32 (output_bfd,
1777 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1778 splt->contents);
1779 bfd_put_32 (output_bfd,
1780 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1781 splt->contents + 4);
1782 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1783 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1784 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1785 }
1786
1787 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
1788 }
1789 }
1790
1791 /* Set the first entry in the global offset table to the address of
1792 the dynamic section. */
1793 if (sgot && sgot->size > 0)
1794 {
1795 if (sdyn == NULL)
1796 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1797 else
1798 bfd_put_32 (output_bfd,
1799 sdyn->output_section->vma + sdyn->output_offset,
1800 sgot->contents);
1801 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1802 }
1803
1804 if (htab->root.sgot && htab->root.sgot->size > 0)
1805 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize = 4;
1806
1807 return TRUE;
1808 }
1809
1810 /* Finish up dynamic symbol handling. We set the contents of various
1811 dynamic sections here. */
1812
1813 static bfd_boolean
1814 or1k_elf_finish_dynamic_symbol (bfd *output_bfd,
1815 struct bfd_link_info *info,
1816 struct elf_link_hash_entry *h,
1817 Elf_Internal_Sym *sym)
1818 {
1819 struct elf_or1k_link_hash_table *htab;
1820 bfd_byte *loc;
1821
1822 htab = or1k_elf_hash_table (info);
1823 if (htab == NULL)
1824 return FALSE;
1825
1826 if (h->plt.offset != (bfd_vma) -1)
1827 {
1828 asection *splt;
1829 asection *sgot;
1830 asection *srela;
1831
1832 bfd_vma plt_index;
1833 bfd_vma got_offset;
1834 bfd_vma got_addr;
1835 Elf_Internal_Rela rela;
1836
1837 /* This symbol has an entry in the procedure linkage table. Set
1838 it up. */
1839 BFD_ASSERT (h->dynindx != -1);
1840
1841 splt = htab->root.splt;
1842 sgot = htab->root.sgotplt;
1843 srela = htab->root.srelplt;
1844 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1845
1846 /* Get the index in the procedure linkage table which
1847 corresponds to this symbol. This is the index of this symbol
1848 in all the symbols for which we are making plt entries. The
1849 first entry in the procedure linkage table is reserved. */
1850 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1851
1852 /* Get the offset into the .got table of the entry that
1853 corresponds to this function. Each .got entry is 4 bytes.
1854 The first three are reserved. */
1855 got_offset = (plt_index + 3) * 4;
1856 got_addr = got_offset;
1857
1858 /* Fill in the entry in the procedure linkage table. */
1859 if (! bfd_link_pic (info))
1860 {
1861 got_addr += htab->root.sgotplt->output_section->vma
1862 + htab->root.sgotplt->output_offset;
1863 bfd_put_32 (output_bfd, PLT_ENTRY_WORD0 | ((got_addr >> 16) & 0xffff),
1864 splt->contents + h->plt.offset);
1865 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1 | (got_addr & 0xffff),
1866 splt->contents + h->plt.offset + 4);
1867 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
1868 splt->contents + h->plt.offset + 8);
1869 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
1870 splt->contents + h->plt.offset + 12);
1871 bfd_put_32 (output_bfd, PLT_ENTRY_WORD4
1872 | plt_index * sizeof (Elf32_External_Rela),
1873 splt->contents + h->plt.offset + 16);
1874 }
1875 else
1876 {
1877 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD0 | (got_addr & 0xffff),
1878 splt->contents + h->plt.offset);
1879 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD1
1880 | plt_index * sizeof (Elf32_External_Rela),
1881 splt->contents + h->plt.offset + 4);
1882 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
1883 splt->contents + h->plt.offset + 8);
1884 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
1885 splt->contents + h->plt.offset + 12);
1886 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
1887 splt->contents + h->plt.offset + 16);
1888 }
1889
1890 /* Fill in the entry in the global offset table. */
1891 bfd_put_32 (output_bfd,
1892 (splt->output_section->vma
1893 + splt->output_offset), /* Same offset. */
1894 sgot->contents + got_offset);
1895
1896 /* Fill in the entry in the .rela.plt section. */
1897 rela.r_offset = (sgot->output_section->vma
1898 + sgot->output_offset
1899 + got_offset);
1900 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT);
1901 rela.r_addend = 0;
1902 loc = srela->contents;
1903 loc += plt_index * sizeof (Elf32_External_Rela);
1904 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1905
1906 if (!h->def_regular)
1907 {
1908 /* Mark the symbol as undefined, rather than as defined in
1909 the .plt section. Leave the value alone. */
1910 sym->st_shndx = SHN_UNDEF;
1911 }
1912
1913 }
1914
1915 if (h->got.offset != (bfd_vma) -1
1916 && (h->got.offset & 2) == 0) /* Homemade TLS check. */
1917 {
1918 asection *sgot;
1919 asection *srela;
1920 Elf_Internal_Rela rela;
1921
1922 /* This symbol has an entry in the global offset table. Set it
1923 up. */
1924 sgot = htab->root.sgot;
1925 srela = htab->root.srelgot;
1926 BFD_ASSERT (sgot != NULL && srela != NULL);
1927
1928 rela.r_offset = (sgot->output_section->vma
1929 + sgot->output_offset
1930 + (h->got.offset &~ 1));
1931
1932 /* If this is a -Bsymbolic link, and the symbol is defined
1933 locally, we just want to emit a RELATIVE reloc. Likewise if
1934 the symbol was forced to be local because of a version file.
1935 The entry in the global offset table will already have been
1936 initialized in the relocate_section function. */
1937 if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
1938 {
1939 rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1940 rela.r_addend = (h->root.u.def.value
1941 + h->root.u.def.section->output_section->vma
1942 + h->root.u.def.section->output_offset);
1943 }
1944 else
1945 {
1946 BFD_ASSERT ((h->got.offset & 1) == 0);
1947 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
1948 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT);
1949 rela.r_addend = 0;
1950 }
1951
1952 loc = srela->contents;
1953 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
1954 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1955 ++srela->reloc_count;
1956 }
1957
1958 if (h->needs_copy)
1959 {
1960 asection *s;
1961 Elf_Internal_Rela rela;
1962
1963 /* This symbols needs a copy reloc. Set it up. */
1964 BFD_ASSERT (h->dynindx != -1
1965 && (h->root.type == bfd_link_hash_defined
1966 || h->root.type == bfd_link_hash_defweak));
1967
1968 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1969 ".rela.bss");
1970 BFD_ASSERT (s != NULL);
1971
1972 rela.r_offset = (h->root.u.def.value
1973 + h->root.u.def.section->output_section->vma
1974 + h->root.u.def.section->output_offset);
1975 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY);
1976 rela.r_addend = 0;
1977 loc = s->contents;
1978 loc += s->reloc_count * sizeof (Elf32_External_Rela);
1979 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1980 ++s->reloc_count;
1981 }
1982
1983 /* Mark some specially defined symbols as absolute. */
1984 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1985 || h == htab->root.hgot)
1986 sym->st_shndx = SHN_ABS;
1987
1988 return TRUE;
1989 }
1990
1991 static enum elf_reloc_type_class
1992 or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
1993 const asection *rel_sec ATTRIBUTE_UNUSED,
1994 const Elf_Internal_Rela *rela)
1995 {
1996 switch ((int) ELF32_R_TYPE (rela->r_info))
1997 {
1998 case R_OR1K_RELATIVE: return reloc_class_relative;
1999 case R_OR1K_JMP_SLOT: return reloc_class_plt;
2000 case R_OR1K_COPY: return reloc_class_copy;
2001 default: return reloc_class_normal;
2002 }
2003 }
2004
2005 /* Adjust a symbol defined by a dynamic object and referenced by a
2006 regular object. The current definition is in some section of the
2007 dynamic object, but we're not including those sections. We have to
2008 change the definition to something the rest of the link can
2009 understand. */
2010
2011 static bfd_boolean
2012 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2013 struct elf_link_hash_entry *h)
2014 {
2015 struct elf_or1k_link_hash_table *htab;
2016 struct elf_or1k_link_hash_entry *eh;
2017 struct elf_or1k_dyn_relocs *p;
2018 bfd *dynobj;
2019 asection *s;
2020
2021 dynobj = elf_hash_table (info)->dynobj;
2022
2023 /* Make sure we know what is going on here. */
2024 BFD_ASSERT (dynobj != NULL
2025 && (h->needs_plt
2026 || h->u.weakdef != NULL
2027 || (h->def_dynamic
2028 && h->ref_regular
2029 && !h->def_regular)));
2030
2031 /* If this is a function, put it in the procedure linkage table. We
2032 will fill in the contents of the procedure linkage table later,
2033 when we know the address of the .got section. */
2034 if (h->type == STT_FUNC
2035 || h->needs_plt)
2036 {
2037 if (! bfd_link_pic (info)
2038 && !h->def_dynamic
2039 && !h->ref_dynamic
2040 && h->root.type != bfd_link_hash_undefweak
2041 && h->root.type != bfd_link_hash_undefined)
2042 {
2043 /* This case can occur if we saw a PLT reloc in an input
2044 file, but the symbol was never referred to by a dynamic
2045 object. In such a case, we don't actually need to build
2046 a procedure linkage table, and we can just do a PCREL
2047 reloc instead. */
2048 h->plt.offset = (bfd_vma) -1;
2049 h->needs_plt = 0;
2050 }
2051
2052 return TRUE;
2053 }
2054 else
2055 h->plt.offset = (bfd_vma) -1;
2056
2057 /* If this is a weak symbol, and there is a real definition, the
2058 processor independent code will have arranged for us to see the
2059 real definition first, and we can just use the same value. */
2060 if (h->u.weakdef != NULL)
2061 {
2062 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2063 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2064 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2065 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2066 return TRUE;
2067 }
2068
2069 /* This is a reference to a symbol defined by a dynamic object which
2070 is not a function. */
2071
2072 /* If we are creating a shared library, we must presume that the
2073 only references to the symbol are via the global offset table.
2074 For such cases we need not do anything here; the relocations will
2075 be handled correctly by relocate_section. */
2076 if (bfd_link_pic (info))
2077 return TRUE;
2078
2079 /* If there are no references to this symbol that do not use the
2080 GOT, we don't need to generate a copy reloc. */
2081 if (!h->non_got_ref)
2082 return TRUE;
2083
2084 /* If -z nocopyreloc was given, we won't generate them either. */
2085 if (info->nocopyreloc)
2086 {
2087 h->non_got_ref = 0;
2088 return TRUE;
2089 }
2090
2091 eh = (struct elf_or1k_link_hash_entry *) h;
2092 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2093 {
2094 s = p->sec->output_section;
2095 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2096 break;
2097 }
2098
2099 /* If we didn't find any dynamic relocs in sections which needs the
2100 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2101 the copy reloc. */
2102 if (p == NULL)
2103 {
2104 h->non_got_ref = 0;
2105 return TRUE;
2106 }
2107
2108 /* We must allocate the symbol in our .dynbss section, which will
2109 become part of the .bss section of the executable. There will be
2110 an entry for this symbol in the .dynsym section. The dynamic
2111 object will contain position independent code, so all references
2112 from the dynamic object to this symbol will go through the global
2113 offset table. The dynamic linker will use the .dynsym entry to
2114 determine the address it must put in the global offset table, so
2115 both the dynamic object and the regular object will refer to the
2116 same memory location for the variable. */
2117
2118 htab = or1k_elf_hash_table (info);
2119 if (htab == NULL)
2120 return FALSE;
2121
2122 s = htab->sdynbss;
2123 BFD_ASSERT (s != NULL);
2124
2125 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2126 to copy the initial value out of the dynamic object and into the
2127 runtime process image. We need to remember the offset into the
2128 .rela.bss section we are going to use. */
2129 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2130 {
2131 asection *srel;
2132
2133 srel = htab->srelbss;
2134 BFD_ASSERT (srel != NULL);
2135 srel->size += sizeof (Elf32_External_Rela);
2136 h->needs_copy = 1;
2137 }
2138
2139 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2140 }
2141
2142 /* Allocate space in .plt, .got and associated reloc sections for
2143 dynamic relocs. */
2144
2145 static bfd_boolean
2146 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2147 {
2148 struct bfd_link_info *info;
2149 struct elf_or1k_link_hash_table *htab;
2150 struct elf_or1k_link_hash_entry *eh;
2151 struct elf_or1k_dyn_relocs *p;
2152
2153 if (h->root.type == bfd_link_hash_indirect)
2154 return TRUE;
2155
2156 info = (struct bfd_link_info *) inf;
2157 htab = or1k_elf_hash_table (info);
2158 if (htab == NULL)
2159 return FALSE;
2160
2161 eh = (struct elf_or1k_link_hash_entry *) h;
2162
2163 if (htab->root.dynamic_sections_created
2164 && h->plt.refcount > 0)
2165 {
2166 /* Make sure this symbol is output as a dynamic symbol.
2167 Undefined weak syms won't yet be marked as dynamic. */
2168 if (h->dynindx == -1
2169 && !h->forced_local)
2170 {
2171 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2172 return FALSE;
2173 }
2174
2175 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2176 {
2177 asection *s = htab->root.splt;
2178
2179 /* If this is the first .plt entry, make room for the special
2180 first entry. */
2181 if (s->size == 0)
2182 s->size = PLT_ENTRY_SIZE;
2183
2184 h->plt.offset = s->size;
2185
2186 /* If this symbol is not defined in a regular file, and we are
2187 not generating a shared library, then set the symbol to this
2188 location in the .plt. This is required to make function
2189 pointers compare as equal between the normal executable and
2190 the shared library. */
2191 if (! bfd_link_pic (info)
2192 && !h->def_regular)
2193 {
2194 h->root.u.def.section = s;
2195 h->root.u.def.value = h->plt.offset;
2196 }
2197
2198 /* Make room for this entry. */
2199 s->size += PLT_ENTRY_SIZE;
2200
2201 /* We also need to make an entry in the .got.plt section, which
2202 will be placed in the .got section by the linker script. */
2203 htab->root.sgotplt->size += 4;
2204
2205 /* We also need to make an entry in the .rel.plt section. */
2206 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2207 }
2208 else
2209 {
2210 h->plt.offset = (bfd_vma) -1;
2211 h->needs_plt = 0;
2212 }
2213 }
2214 else
2215 {
2216 h->plt.offset = (bfd_vma) -1;
2217 h->needs_plt = 0;
2218 }
2219
2220 if (h->got.refcount > 0)
2221 {
2222 asection *s;
2223 bfd_boolean dyn;
2224 unsigned char tls_type;
2225
2226 /* Make sure this symbol is output as a dynamic symbol.
2227 Undefined weak syms won't yet be marked as dynamic. */
2228 if (h->dynindx == -1
2229 && !h->forced_local)
2230 {
2231 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2232 return FALSE;
2233 }
2234
2235 s = htab->root.sgot;
2236
2237 h->got.offset = s->size;
2238
2239 tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type;
2240
2241 /* TLS GD requires two GOT and two relocs. */
2242 if (tls_type == TLS_GD)
2243 s->size += 8;
2244 else
2245 s->size += 4;
2246 dyn = htab->root.dynamic_sections_created;
2247 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
2248 {
2249 if (tls_type == TLS_GD)
2250 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2251 else
2252 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2253 }
2254 }
2255 else
2256 h->got.offset = (bfd_vma) -1;
2257
2258 if (eh->dyn_relocs == NULL)
2259 return TRUE;
2260
2261 /* In the shared -Bsymbolic case, discard space allocated for
2262 dynamic pc-relative relocs against symbols which turn out to be
2263 defined in regular objects. For the normal shared case, discard
2264 space for pc-relative relocs that have become local due to symbol
2265 visibility changes. */
2266
2267 if (bfd_link_pic (info))
2268 {
2269 if (SYMBOL_CALLS_LOCAL (info, h))
2270 {
2271 struct elf_or1k_dyn_relocs **pp;
2272
2273 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2274 {
2275 p->count -= p->pc_count;
2276 p->pc_count = 0;
2277 if (p->count == 0)
2278 *pp = p->next;
2279 else
2280 pp = &p->next;
2281 }
2282 }
2283
2284 /* Also discard relocs on undefined weak syms with non-default
2285 visibility. */
2286 if (eh->dyn_relocs != NULL
2287 && h->root.type == bfd_link_hash_undefweak)
2288 {
2289 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2290 eh->dyn_relocs = NULL;
2291
2292 /* Make sure undefined weak symbols are output as a dynamic
2293 symbol in PIEs. */
2294 else if (h->dynindx == -1
2295 && !h->forced_local)
2296 {
2297 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2298 return FALSE;
2299 }
2300 }
2301 }
2302 else
2303 {
2304 /* For the non-shared case, discard space for relocs against
2305 symbols which turn out to need copy relocs or are not
2306 dynamic. */
2307
2308 if (!h->non_got_ref
2309 && ((h->def_dynamic
2310 && !h->def_regular)
2311 || (htab->root.dynamic_sections_created
2312 && (h->root.type == bfd_link_hash_undefweak
2313 || h->root.type == bfd_link_hash_undefined))))
2314 {
2315 /* Make sure this symbol is output as a dynamic symbol.
2316 Undefined weak syms won't yet be marked as dynamic. */
2317 if (h->dynindx == -1
2318 && !h->forced_local)
2319 {
2320 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2321 return FALSE;
2322 }
2323
2324 /* If that succeeded, we know we'll be keeping all the
2325 relocs. */
2326 if (h->dynindx != -1)
2327 goto keep;
2328 }
2329
2330 eh->dyn_relocs = NULL;
2331
2332 keep: ;
2333 }
2334
2335 /* Finally, allocate space. */
2336 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2337 {
2338 asection *sreloc = elf_section_data (p->sec)->sreloc;
2339 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2340 }
2341
2342 return TRUE;
2343 }
2344
2345 /* Find any dynamic relocs that apply to read-only sections. */
2346
2347 static bfd_boolean
2348 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2349 {
2350 struct elf_or1k_link_hash_entry *eh;
2351 struct elf_or1k_dyn_relocs *p;
2352
2353 eh = (struct elf_or1k_link_hash_entry *) h;
2354 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2355 {
2356 asection *s = p->sec->output_section;
2357
2358 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2359 {
2360 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2361
2362 info->flags |= DF_TEXTREL;
2363
2364 /* Not an error, just cut short the traversal. */
2365 return FALSE;
2366 }
2367 }
2368 return TRUE;
2369 }
2370
2371 /* Set the sizes of the dynamic sections. */
2372
2373 static bfd_boolean
2374 or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2375 struct bfd_link_info *info)
2376 {
2377 struct elf_or1k_link_hash_table *htab;
2378 bfd *dynobj;
2379 asection *s;
2380 bfd_boolean relocs;
2381 bfd *ibfd;
2382
2383 htab = or1k_elf_hash_table (info);
2384 if (htab == NULL)
2385 return FALSE;
2386
2387 dynobj = htab->root.dynobj;
2388 BFD_ASSERT (dynobj != NULL);
2389
2390 if (htab->root.dynamic_sections_created)
2391 {
2392 /* Set the contents of the .interp section to the interpreter. */
2393 if (bfd_link_executable (info) && !info->nointerp)
2394 {
2395 s = bfd_get_section_by_name (dynobj, ".interp");
2396 BFD_ASSERT (s != NULL);
2397 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2398 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2399 }
2400 }
2401
2402 /* Set up .got offsets for local syms, and space for local dynamic
2403 relocs. */
2404 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2405 {
2406 bfd_signed_vma *local_got;
2407 bfd_signed_vma *end_local_got;
2408 bfd_size_type locsymcount;
2409 Elf_Internal_Shdr *symtab_hdr;
2410 unsigned char *local_tls_type;
2411 asection *srel;
2412
2413 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2414 continue;
2415
2416 for (s = ibfd->sections; s != NULL; s = s->next)
2417 {
2418 struct elf_or1k_dyn_relocs *p;
2419
2420 for (p = ((struct elf_or1k_dyn_relocs *)
2421 elf_section_data (s)->local_dynrel);
2422 p != NULL;
2423 p = p->next)
2424 {
2425 if (! bfd_is_abs_section (p->sec)
2426 && bfd_is_abs_section (p->sec->output_section))
2427 {
2428 /* Input section has been discarded, either because
2429 it is a copy of a linkonce section or due to
2430 linker script /DISCARD/, so we'll be discarding
2431 the relocs too. */
2432 }
2433 else if (p->count != 0)
2434 {
2435 srel = elf_section_data (p->sec)->sreloc;
2436 srel->size += p->count * sizeof (Elf32_External_Rela);
2437 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2438 info->flags |= DF_TEXTREL;
2439 }
2440 }
2441 }
2442
2443 local_got = elf_local_got_refcounts (ibfd);
2444 if (!local_got)
2445 continue;
2446
2447 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2448 locsymcount = symtab_hdr->sh_info;
2449 end_local_got = local_got + locsymcount;
2450 s = htab->root.sgot;
2451 srel = htab->root.srelgot;
2452 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd);
2453 for (; local_got < end_local_got; ++local_got)
2454 {
2455 if (*local_got > 0)
2456 {
2457 *local_got = s->size;
2458
2459 /* TLS GD requires two GOT and two relocs. */
2460 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2461 s->size += 8;
2462 else
2463 s->size += 4;
2464 if (bfd_link_pic (info))
2465 {
2466 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2467 srel->size += 2 * sizeof (Elf32_External_Rela);
2468 else
2469 srel->size += sizeof (Elf32_External_Rela);
2470 }
2471 }
2472 else
2473
2474 *local_got = (bfd_vma) -1;
2475
2476 if (local_tls_type)
2477 ++local_tls_type;
2478 }
2479 }
2480
2481 /* Allocate global sym .plt and .got entries, and space for global
2482 sym dynamic relocs. */
2483 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2484
2485 /* We now have determined the sizes of the various dynamic sections.
2486 Allocate memory for them. */
2487 relocs = FALSE;
2488 for (s = dynobj->sections; s != NULL; s = s->next)
2489 {
2490 if ((s->flags & SEC_LINKER_CREATED) == 0)
2491 continue;
2492
2493 if (s == htab->root.splt
2494 || s == htab->root.sgot
2495 || s == htab->root.sgotplt
2496 || s == htab->sdynbss)
2497 {
2498 /* Strip this section if we don't need it; see the
2499 comment below. */
2500 }
2501 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2502 {
2503 if (s->size != 0 && s != htab->root.srelplt)
2504 relocs = TRUE;
2505
2506 /* We use the reloc_count field as a counter if we need
2507 to copy relocs into the output file. */
2508 s->reloc_count = 0;
2509 }
2510 else
2511 /* It's not one of our sections, so don't allocate space. */
2512 continue;
2513
2514 if (s->size == 0)
2515 {
2516 /* If we don't need this section, strip it from the
2517 output file. This is mostly to handle .rela.bss and
2518 .rela.plt. We must create both sections in
2519 create_dynamic_sections, because they must be created
2520 before the linker maps input sections to output
2521 sections. The linker does that before
2522 adjust_dynamic_symbol is called, and it is that
2523 function which decides whether anything needs to go
2524 into these sections. */
2525 s->flags |= SEC_EXCLUDE;
2526 continue;
2527 }
2528
2529 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2530 continue;
2531
2532 /* Allocate memory for the section contents. We use bfd_zalloc
2533 here in case unused entries are not reclaimed before the
2534 section's contents are written out. This should not happen,
2535 but this way if it does, we get a R_OR1K_NONE reloc instead
2536 of garbage. */
2537 s->contents = bfd_zalloc (dynobj, s->size);
2538
2539 if (s->contents == NULL)
2540 return FALSE;
2541 }
2542
2543 if (htab->root.dynamic_sections_created)
2544 {
2545 /* Add some entries to the .dynamic section. We fill in the
2546 values later, in or1k_elf_finish_dynamic_sections, but we
2547 must add the entries now so that we get the correct size for
2548 the .dynamic section. The DT_DEBUG entry is filled in by the
2549 dynamic linker and used by the debugger. */
2550 #define add_dynamic_entry(TAG, VAL) \
2551 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2552
2553 if (bfd_link_executable (info))
2554 {
2555 if (! add_dynamic_entry (DT_DEBUG, 0))
2556 return FALSE;
2557 }
2558
2559 if (htab->root.splt->size != 0)
2560 {
2561 if (! add_dynamic_entry (DT_PLTGOT, 0)
2562 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2563 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2564 || ! add_dynamic_entry (DT_JMPREL, 0))
2565 return FALSE;
2566 }
2567
2568 if (relocs)
2569 {
2570 if (! add_dynamic_entry (DT_RELA, 0)
2571 || ! add_dynamic_entry (DT_RELASZ, 0)
2572 || ! add_dynamic_entry (DT_RELAENT,
2573 sizeof (Elf32_External_Rela)))
2574 return FALSE;
2575
2576 /* If any dynamic relocs apply to a read-only section,
2577 then we need a DT_TEXTREL entry. */
2578 if ((info->flags & DF_TEXTREL) == 0)
2579 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2580 info);
2581
2582 if ((info->flags & DF_TEXTREL) != 0)
2583 {
2584 if (! add_dynamic_entry (DT_TEXTREL, 0))
2585 return FALSE;
2586 }
2587 }
2588 }
2589
2590 #undef add_dynamic_entry
2591 return TRUE;
2592 }
2593
2594 /* Create dynamic sections when linking against a dynamic object. */
2595
2596 static bfd_boolean
2597 or1k_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2598 {
2599 struct elf_or1k_link_hash_table *htab;
2600
2601 htab = or1k_elf_hash_table (info);
2602 if (htab == NULL)
2603 return FALSE;
2604
2605 if (!htab->root.sgot && !_bfd_elf_create_got_section (dynobj, info))
2606 return FALSE;
2607
2608 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2609 return FALSE;
2610
2611 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2612 if (!bfd_link_pic (info))
2613 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2614
2615 if (!htab->root.splt || !htab->root.srelplt || !htab->sdynbss
2616 || (!bfd_link_pic (info) && !htab->srelbss))
2617 abort ();
2618
2619 return TRUE;
2620 }
2621
2622 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2623
2624 static void
2625 or1k_elf_copy_indirect_symbol (struct bfd_link_info *info,
2626 struct elf_link_hash_entry *dir,
2627 struct elf_link_hash_entry *ind)
2628 {
2629 struct elf_or1k_link_hash_entry * edir;
2630 struct elf_or1k_link_hash_entry * eind;
2631
2632 edir = (struct elf_or1k_link_hash_entry *) dir;
2633 eind = (struct elf_or1k_link_hash_entry *) ind;
2634
2635 if (eind->dyn_relocs != NULL)
2636 {
2637 if (edir->dyn_relocs != NULL)
2638 {
2639 struct elf_or1k_dyn_relocs **pp;
2640 struct elf_or1k_dyn_relocs *p;
2641
2642 /* Add reloc counts against the indirect sym to the direct sym
2643 list. Merge any entries against the same section. */
2644 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2645 {
2646 struct elf_or1k_dyn_relocs *q;
2647
2648 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2649 if (q->sec == p->sec)
2650 {
2651 q->pc_count += p->pc_count;
2652 q->count += p->count;
2653 *pp = p->next;
2654 break;
2655 }
2656 if (q == NULL)
2657 pp = &p->next;
2658 }
2659 *pp = edir->dyn_relocs;
2660 }
2661
2662 edir->dyn_relocs = eind->dyn_relocs;
2663 eind->dyn_relocs = NULL;
2664 }
2665
2666 if (ind->root.type == bfd_link_hash_indirect)
2667 {
2668 if (dir->got.refcount <= 0)
2669 {
2670 edir->tls_type = eind->tls_type;
2671 eind->tls_type = TLS_UNKNOWN;
2672 }
2673 }
2674
2675 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2676 }
2677
2678 /* Set the right machine number. */
2679
2680 static bfd_boolean
2681 or1k_elf_object_p (bfd *abfd)
2682 {
2683 unsigned long mach = bfd_mach_or1k;
2684
2685 if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY)
2686 mach = bfd_mach_or1knd;
2687
2688 return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach);
2689 }
2690
2691 /* Store the machine number in the flags field. */
2692
2693 static void
2694 or1k_elf_final_write_processing (bfd *abfd,
2695 bfd_boolean linker ATTRIBUTE_UNUSED)
2696 {
2697 switch (bfd_get_mach (abfd))
2698 {
2699 default:
2700 case bfd_mach_or1k:
2701 break;
2702 case bfd_mach_or1knd:
2703 elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY;
2704 break;
2705 }
2706 }
2707
2708 static bfd_boolean
2709 or1k_elf_set_private_flags (bfd *abfd, flagword flags)
2710 {
2711 BFD_ASSERT (!elf_flags_init (abfd)
2712 || elf_elfheader (abfd)->e_flags == flags);
2713
2714 elf_elfheader (abfd)->e_flags = flags;
2715 elf_flags_init (abfd) = TRUE;
2716 return TRUE;
2717 }
2718
2719 /* Make sure all input files are consistent with respect to
2720 EF_OR1K_NODELAY flag setting. */
2721
2722 static bfd_boolean
2723 elf32_or1k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
2724 {
2725 bfd *obfd = info->output_bfd;
2726 flagword out_flags;
2727 flagword in_flags;
2728
2729 in_flags = elf_elfheader (ibfd)->e_flags;
2730 out_flags = elf_elfheader (obfd)->e_flags;
2731
2732 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2733 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2734 return TRUE;
2735
2736 if (!elf_flags_init (obfd))
2737 {
2738 elf_flags_init (obfd) = TRUE;
2739 elf_elfheader (obfd)->e_flags = in_flags;
2740
2741 return TRUE;
2742 }
2743
2744 if (in_flags == out_flags)
2745 return TRUE;
2746
2747 if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY))
2748 {
2749 _bfd_error_handler
2750 (_("%B: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd);
2751
2752 bfd_set_error (bfd_error_bad_value);
2753 return FALSE;
2754 }
2755
2756 return TRUE;
2757
2758 }
2759
2760 #define ELF_ARCH bfd_arch_or1k
2761 #define ELF_MACHINE_CODE EM_OR1K
2762 #define ELF_TARGET_ID OR1K_ELF_DATA
2763 #define ELF_MAXPAGESIZE 0x2000
2764
2765 #define TARGET_BIG_SYM or1k_elf32_vec
2766 #define TARGET_BIG_NAME "elf32-or1k"
2767
2768 #define elf_info_to_howto_rel NULL
2769 #define elf_info_to_howto or1k_info_to_howto_rela
2770 #define elf_backend_relocate_section or1k_elf_relocate_section
2771 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2772 #define elf_backend_gc_sweep_hook or1k_elf_gc_sweep_hook
2773 #define elf_backend_check_relocs or1k_elf_check_relocs
2774 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2775 #define elf_backend_can_gc_sections 1
2776 #define elf_backend_rela_normal 1
2777
2778 #define bfd_elf32_mkobject elf_or1k_mkobject
2779
2780 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2781 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2782 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2783 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2784
2785 #define elf_backend_object_p or1k_elf_object_p
2786 #define elf_backend_final_write_processing or1k_elf_final_write_processing
2787 #define elf_backend_can_refcount 1
2788
2789 #define elf_backend_plt_readonly 1
2790 #define elf_backend_want_got_plt 1
2791 #define elf_backend_want_plt_sym 0
2792 #define elf_backend_got_header_size 12
2793 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2794 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2795 #define elf_backend_create_dynamic_sections or1k_elf_create_dynamic_sections
2796 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2797 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2798 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2799 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2800
2801 #include "elf32-target.h"
GDB Binutils - Deliverables
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