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Add missing ld makefile dependency for nios.
[deliverable/binutils-gdb.git] / bfd / elf32-or1k.c
CommitLineData
73589c9d
CS		 1/* Or1k-specific support for 32-bit ELF.
2 Copyright 2001-2014 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
58static reloc_howto_type or1k_elf_howto_table[] =
59{
60 /* This reloc does nothing. */
61 HOWTO (R_OR1K_NONE, /* type */
62 0, /* rightshift */
63 2, /* size (0 = byte, 1 = short, 2 = long) */
64 32, /* 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 FALSE), /* 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 FALSE), /* 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 FALSE), /* 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
517struct or1k_reloc_map
518{
519 bfd_reloc_code_real_type bfd_reloc_val;
520 unsigned int or1k_reloc_val;
521};
522
523static 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
565struct 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. */
587struct 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. */
599struct 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. */
614struct 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 *sgot;
620 asection *sgotplt;
621 asection *srelgot;
622 asection *splt;
623 asection *srelplt;
624 asection *sdynbss;
625 asection *srelbss;
626
627 /* Small local sym to section mapping cache. */
628 struct sym_cache sym_sec;
629};
630
631/* Get the ELF linker hash table from a link_info structure. */
632#define or1k_elf_hash_table(p) \
633 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
634 == OR1K_ELF_DATA ? ((struct elf_or1k_link_hash_table *) ((p)->hash)) : NULL)
635
636static bfd_boolean
637elf_or1k_mkobject (bfd *abfd)
638{
639 return bfd_elf_allocate_object (abfd, sizeof (struct elf_or1k_obj_tdata),
640 OR1K_ELF_DATA);
641}
642
643/* Create an entry in an or1k ELF linker hash table. */
644
645static struct bfd_hash_entry *
646or1k_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
647 struct bfd_hash_table *table,
648 const char *string)
649{
650 struct elf_or1k_link_hash_entry *ret =
651 (struct elf_or1k_link_hash_entry *) entry;
652
653 /* Allocate the structure if it has not already been allocated by a
654 subclass. */
655 if (ret == NULL)
656 ret = bfd_hash_allocate (table,
657 sizeof (struct elf_or1k_link_hash_entry));
658 if (ret == NULL)
659 return NULL;
660
661 /* Call the allocation method of the superclass. */
662 ret = ((struct elf_or1k_link_hash_entry *)
663 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
664 table, string));
665 if (ret != NULL)
666 {
667 struct elf_or1k_link_hash_entry *eh;
668
669 eh = (struct elf_or1k_link_hash_entry *) ret;
670 eh->dyn_relocs = NULL;
671 eh->tls_type = TLS_UNKNOWN;
672 }
673
674 return (struct bfd_hash_entry *) ret;
675}
676
677/* Create an or1k ELF linker hash table. */
678
679static struct bfd_link_hash_table *
680or1k_elf_link_hash_table_create (bfd *abfd)
681{
682 struct elf_or1k_link_hash_table *ret;
683 bfd_size_type amt = sizeof (struct elf_or1k_link_hash_table);
684
685 ret = bfd_zmalloc (amt);
686 if (ret == NULL)
687 return NULL;
688
689 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
690 or1k_elf_link_hash_newfunc,
691 sizeof (struct elf_or1k_link_hash_entry),
692 OR1K_ELF_DATA))
693 {
694 free (ret);
695 return NULL;
696 }
697
698 return &ret->root.root;
699}
700
701static reloc_howto_type *
702or1k_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
703 bfd_reloc_code_real_type code)
704{
705 unsigned int i;
706
707 for (i = ARRAY_SIZE (or1k_reloc_map); --i;)
708 if (or1k_reloc_map[i].bfd_reloc_val == code)
709 return & or1k_elf_howto_table[or1k_reloc_map[i].or1k_reloc_val];
710
711 return NULL;
712}
713
714static reloc_howto_type *
715or1k_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
716 const char *r_name)
717{
718 unsigned int i;
719
720 for (i = 0;
721 i < (sizeof (or1k_elf_howto_table)
722 / sizeof (or1k_elf_howto_table[0]));
723 i++)
724 if (or1k_elf_howto_table[i].name != NULL
725 && strcasecmp (or1k_elf_howto_table[i].name, r_name) == 0)
726 return &or1k_elf_howto_table[i];
727
728 return NULL;
729}
730
731/* Set the howto pointer for an Or1k ELF reloc. */
732
733static void
734or1k_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
735 arelent * cache_ptr,
736 Elf_Internal_Rela * dst)
737{
738 unsigned int r_type;
739
740 r_type = ELF32_R_TYPE (dst->r_info);
741 BFD_ASSERT (r_type < (unsigned int) R_OR1K_max);
742 cache_ptr->howto = & or1k_elf_howto_table[r_type];
743}
744
745
746/* Return the relocation value for @tpoff relocations.. */
747static bfd_vma
748tpoff (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
790static bfd_boolean
791or1k_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->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 (info->relocatable)
879 continue;
880
881 switch (howto->type)
882 {
883 case R_OR1K_PLT26:
884 {
885 if (htab->splt != NULL && h != NULL
886 && h->plt.offset != (bfd_vma) -1)
887 {
888 relocation = (htab->splt->output_section->vma
889 + htab->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, info->shared, h)
909 || (info->shared
910 && (info->symbolic
911 || h->dynindx == -1
912 || h->forced_local)
913 && h->def_regular))
914 {
915 /* This is actually a static link, or it is a
916 -Bsymbolic link and the symbol is defined
917 locally, or the symbol was forced to be local
918 because of a version file. We must initialize
919 this entry in the global offset table. Since the
920 offset must always be a multiple of 4, we use the
921 least significant bit to record whether we have
922 initialized it already.
923
924 When doing a dynamic link, we create a .rela.got
925 relocation entry to initialize the value. This
926 is done in the finish_dynamic_symbol routine. */
927 if ((off & 1) != 0)
928 off &= ~1;
929 else
930 {
931 /* Write entry in GOT. */
932 bfd_put_32 (output_bfd, relocation,
933 sgot->contents + off);
934 /* Mark GOT entry as having been written. */
935 h->got.offset |= 1;
936 }
937 }
938
939 relocation = sgot->output_offset + off;
940 }
941 else
942 {
943 bfd_vma off;
944 bfd_byte *loc;
945
946 BFD_ASSERT (local_got_offsets != NULL
947 && local_got_offsets[r_symndx] != (bfd_vma) -1);
948
949 /* Get offset into GOT table. */
950 off = local_got_offsets[r_symndx];
951
952 /* The offset must always be a multiple of 4. We use
953 the least significant bit to record whether we have
954 already processed this entry. */
955 if ((off & 1) != 0)
956 off &= ~1;
957 else
958 {
959 /* Write entry in GOT. */
960 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
961 if (info->shared)
962 {
963 asection *srelgot;
964 Elf_Internal_Rela outrel;
965
966 /* We need to generate a R_OR1K_RELATIVE reloc
967 for the dynamic linker. */
968 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
969 BFD_ASSERT (srelgot != NULL);
970
971 outrel.r_offset = (sgot->output_section->vma
972 + sgot->output_offset
973 + off);
974 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
975 outrel.r_addend = relocation;
976 loc = srelgot->contents;
977 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
978 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
979 ++srelgot->reloc_count;
980 }
981
982 local_got_offsets[r_symndx] |= 1;
983 }
984 relocation = sgot->output_offset + off;
985 }
986
987 /* Addend should be zero. */
988 if (rel->r_addend != 0)
989 (*_bfd_error_handler)
990 (_("internal error: addend should be zero for R_OR1K_GOT16"));
991
992 break;
993
994 case R_OR1K_GOTOFF_LO16:
995 case R_OR1K_GOTOFF_HI16:
996 /* Relocation is offset from GOT. */
997 BFD_ASSERT (sgot != NULL);
998 relocation -= sgot->output_section->vma;
999 break;
1000
1001 case R_OR1K_INSN_REL_26:
1002 case R_OR1K_HI_16_IN_INSN:
1003 case R_OR1K_LO_16_IN_INSN:
1004 case R_OR1K_32:
1005 /* R_OR1K_16? */
1006 {
1007 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1008 from removed linkonce sections, or sections discarded by
1009 a linker script. */
1010 if (r_symndx == STN_UNDEF
1011 || (input_section->flags & SEC_ALLOC) == 0)
1012 break;
1013
1014 if ((info->shared
1015 && (h == NULL
1016 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1017 || h->root.type != bfd_link_hash_undefweak)
1018 && (!howto->pc_relative
1019 || (h != NULL
1020 && h->dynindx != -1
1021 && (!info->symbolic
1022 || !h->def_regular))))
1023 || (!info->shared
1024 && h != NULL
1025 && h->dynindx != -1
1026 && !h->non_got_ref
1027 && ((h->def_dynamic
1028 && !h->def_regular)
1029 || h->root.type == bfd_link_hash_undefweak
1030 || h->root.type == bfd_link_hash_undefined)))
1031 {
1032 Elf_Internal_Rela outrel;
1033 bfd_byte *loc;
1034 bfd_boolean skip;
1035
1036 /* When generating a shared object, these relocations
1037 are copied into the output file to be resolved at run
1038 time. */
1039
1040 BFD_ASSERT (sreloc != NULL);
1041
1042 skip = FALSE;
1043
1044 outrel.r_offset =
1045 _bfd_elf_section_offset (output_bfd, info, input_section,
1046 rel->r_offset);
1047 if (outrel.r_offset == (bfd_vma) -1)
1048 skip = TRUE;
1049 else if (outrel.r_offset == (bfd_vma) -2)
1050 skip = TRUE;
1051 outrel.r_offset += (input_section->output_section->vma
1052 + input_section->output_offset);
1053
1054 if (skip)
1055 memset (&outrel, 0, sizeof outrel);
1056 /* h->dynindx may be -1 if the symbol was marked to
1057 become local. */
1058 else if (h != NULL
1059 && ((! info->symbolic && h->dynindx != -1)
1060 || !h->def_regular))
1061 {
1062 BFD_ASSERT (h->dynindx != -1);
1063 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1064 outrel.r_addend = rel->r_addend;
1065 }
1066 else
1067 {
1068 if (r_type == R_OR1K_32)
1069 {
1070 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1071 outrel.r_addend = relocation + rel->r_addend;
1072 }
1073 else
1074 {
1075 BFD_FAIL ();
1076 (*_bfd_error_handler)
1077 (_("%B: probably compiled without -fPIC?"),
1078 input_bfd);
1079 bfd_set_error (bfd_error_bad_value);
1080 return FALSE;
1081 }
1082 }
1083
1084 loc = sreloc->contents;
1085 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1086 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1087 break;
1088 }
1089 break;
1090 }
1091
1092 case R_OR1K_TLS_LDM_HI16:
1093 case R_OR1K_TLS_LDM_LO16:
1094 case R_OR1K_TLS_LDO_HI16:
1095 case R_OR1K_TLS_LDO_LO16:
1096 /* TODO: implement support for local dynamic. */
1097 BFD_FAIL ();
1098 (*_bfd_error_handler)
1099 (_("%B: support for local dynamic not implemented"),
1100 input_bfd);
1101 bfd_set_error (bfd_error_bad_value);
1102 return FALSE;
1103
1104
1105 case R_OR1K_TLS_GD_HI16:
1106 case R_OR1K_TLS_GD_LO16:
1107 case R_OR1K_TLS_IE_HI16:
1108 case R_OR1K_TLS_IE_LO16:
1109 {
1110 bfd_vma gotoff;
1111 Elf_Internal_Rela rela;
1112 bfd_byte *loc;
1113 int dynamic;
1114
230977a4
CS		 1115 sreloc = bfd_get_section_by_name (dynobj, ".rela.got");
1116
73589c9d
CS		 1117 /* Mark as TLS related GOT entry by setting
1118 bit 2 as well as bit 1. */
1119 if (h != NULL)
1120 {
1121 gotoff = h->got.offset;
1122 h->got.offset |= 3;
1123 }
1124 else
1125 {
1126 gotoff = local_got_offsets[r_symndx];
1127 local_got_offsets[r_symndx] |= 3;
1128 }
1129
1130 /* Only process the relocation once. */
1131 if (gotoff & 1)
1132 {
1133 relocation = sgot->output_offset + (gotoff & ~3);
1134 break;
1135 }
1136
1137 BFD_ASSERT (elf_hash_table (info)->hgot == NULL
1138 || elf_hash_table (info)->hgot->root.u.def.value == 0);
1139
1140 /* Dynamic entries will require relocations. if we do not need
1141 them we will just use the default R_OR1K_NONE and
1142 not set anything. */
1143 dynamic = info->shared
1144 || (sec && (sec->flags & SEC_ALLOC) != 0
1145 && h != NULL
1146 && (h->root.type == bfd_link_hash_defweak || !h->def_regular));
1147
1148 /* Shared GD. */
1149 if (dynamic && (howto->type == R_OR1K_TLS_GD_HI16
1150 || howto->type == R_OR1K_TLS_GD_LO16))
1151 {
1152 int i;
1153
1154 /* Add DTPMOD and DTPOFF GOT and rela entries. */
1155 for (i = 0; i < 2; ++i)
1156 {
1157 rela.r_offset = sgot->output_section->vma +
1158 sgot->output_offset + gotoff + i*4;
1159 if (h != NULL && h->dynindx != -1)
1160 {
1161 rela.r_info = ELF32_R_INFO (h->dynindx,
1162 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1163 rela.r_addend = 0;
1164 }
1165 else
1166 {
1167 rela.r_info = ELF32_R_INFO (0,
1168 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1169 rela.r_addend = tpoff (info, relocation);
1170 }
1171
1172 loc = sreloc->contents;
1173 loc += sreloc->reloc_count++ *
1174 sizeof (Elf32_External_Rela);
1175
1176 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1177 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff + i*4);
1178 }
1179 }
1180 /* Static GD. */
1181 else if (howto->type == R_OR1K_TLS_GD_HI16
1182 || howto->type == R_OR1K_TLS_GD_LO16)
1183 {
1184 bfd_put_32 (output_bfd, 1, sgot->contents + gotoff);
1185 bfd_put_32 (output_bfd, tpoff (info, relocation),
1186 sgot->contents + gotoff + 4);
1187 }
1188 /* Shared IE. */
1189 else if (dynamic)
1190 {
1191 /* Add TPOFF GOT and rela entries. */
1192 rela.r_offset = sgot->output_section->vma +
1193 sgot->output_offset + gotoff;
1194 if (h != NULL && h->dynindx != -1)
1195 {
1196 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_TLS_TPOFF);
1197 rela.r_addend = 0;
1198 }
1199 else
1200 {
1201 rela.r_info = ELF32_R_INFO (0, R_OR1K_TLS_TPOFF);
1202 rela.r_addend = tpoff (info, relocation);
1203 }
1204
1205 loc = sreloc->contents;
1206 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1207
1208 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1209 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff);
1210 }
1211 /* Static IE. */
1212 else
1213 {
1214 bfd_put_32 (output_bfd, tpoff (info, relocation),
1215 sgot->contents + gotoff);
1216 }
1217 relocation = sgot->output_offset + gotoff;
1218 break;
1219 }
1220 case R_OR1K_TLS_LE_HI16:
1221 case R_OR1K_TLS_LE_LO16:
1222
1223 /* Relocation is offset from TP. */
1224 relocation = tpoff (info, relocation);
1225 break;
1226
1227 case R_OR1K_TLS_DTPMOD:
1228 case R_OR1K_TLS_DTPOFF:
1229 case R_OR1K_TLS_TPOFF:
1230 /* These are resolved dynamically on load and shouldn't
1231 be used as linker input. */
1232 BFD_FAIL ();
1233 (*_bfd_error_handler)
1234 (_("%B: will not resolve runtime TLS relocation"),
1235 input_bfd);
1236 bfd_set_error (bfd_error_bad_value);
1237 return FALSE;
1238
1239 default:
1240 break;
1241 }
1242 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
1243 rel->r_offset, relocation, rel->r_addend);
1244
1245 if (r != bfd_reloc_ok)
1246 {
1247 const char *msg = NULL;
1248
1249 switch (r)
1250 {
1251 case bfd_reloc_overflow:
1252 r = info->callbacks->reloc_overflow
1253 (info, (h ? &h->root : NULL), name, howto->name,
1254 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1255 break;
1256
1257 case bfd_reloc_undefined:
1258 r = info->callbacks->undefined_symbol
1259 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
1260 break;
1261
1262 case bfd_reloc_outofrange:
1263 msg = _("internal error: out of range error");
1264 break;
1265
1266 case bfd_reloc_notsupported:
1267 msg = _("internal error: unsupported relocation error");
1268 break;
1269
1270 case bfd_reloc_dangerous:
1271 msg = _("internal error: dangerous relocation");
1272 break;
1273
1274 default:
1275 msg = _("internal error: unknown error");
1276 break;
1277 }
1278
1279 if (msg)
1280 r = info->callbacks->warning
1281 (info, msg, name, input_bfd, input_section, rel->r_offset);
1282
1283 if (!r)
1284 return FALSE;
1285 }
1286 }
1287
1288 return TRUE;
1289}
1290
1291/* Return the section that should be marked against GC for a given
1292 relocation. */
1293
1294static asection *
1295or1k_elf_gc_mark_hook (asection *sec,
1296 struct bfd_link_info *info,
1297 Elf_Internal_Rela *rel,
1298 struct elf_link_hash_entry *h,
1299 Elf_Internal_Sym *sym)
1300{
1301 if (h != NULL)
1302 switch (ELF32_R_TYPE (rel->r_info))
1303 {
1304 case R_OR1K_GNU_VTINHERIT:
1305 case R_OR1K_GNU_VTENTRY:
1306 return NULL;
1307 }
1308
1309 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1310}
1311
1312static bfd_boolean
1313or1k_elf_gc_sweep_hook (bfd *abfd,
1314 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1315 asection *sec,
1316 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1317{
1318 /* Update the got entry reference counts for the section being removed. */
1319 Elf_Internal_Shdr *symtab_hdr;
1320 struct elf_link_hash_entry **sym_hashes;
1321 bfd_signed_vma *local_got_refcounts;
1322 const Elf_Internal_Rela *rel, *relend;
1323
1324 elf_section_data (sec)->local_dynrel = NULL;
1325
1326 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1327 sym_hashes = elf_sym_hashes (abfd);
1328 local_got_refcounts = elf_local_got_refcounts (abfd);
1329
1330 relend = relocs + sec->reloc_count;
1331 for (rel = relocs; rel < relend; rel++)
1332 {
1333 unsigned long r_symndx;
1334 struct elf_link_hash_entry *h = NULL;
1335
1336 r_symndx = ELF32_R_SYM (rel->r_info);
1337 if (r_symndx >= symtab_hdr->sh_info)
1338 {
1339 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1340 while (h->root.type == bfd_link_hash_indirect
1341 || h->root.type == bfd_link_hash_warning)
1342 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1343 }
1344
1345 switch (ELF32_R_TYPE (rel->r_info))
1346 {
1347 case R_OR1K_GOT16:
1348 if (h != NULL)
1349 {
1350 if (h->got.refcount > 0)
1351 h->got.refcount--;
1352 }
1353 else
1354 {
1355 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
1356 local_got_refcounts[r_symndx]--;
1357 }
1358 break;
1359
1360 default:
1361 break;
1362 }
1363 }
1364 return TRUE;
1365}
1366
1367/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1368 shortcuts to them in our hash table. */
1369
1370static bfd_boolean
1371create_got_section (bfd *dynobj, struct bfd_link_info *info)
1372{
1373 struct elf_or1k_link_hash_table *htab;
1374 asection *s;
1375
1376 /* This function may be called more than once. */
1377 s = bfd_get_section_by_name (dynobj, ".got");
1378 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
1379 return TRUE;
1380
1381 htab = or1k_elf_hash_table (info);
1382 if (htab == NULL)
1383 return FALSE;
1384
1385 if (! _bfd_elf_create_got_section (dynobj, info))
1386 return FALSE;
1387
1388 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1389 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1390 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1391
1392 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
1393 abort ();
1394
1395 if (! bfd_set_section_flags (dynobj, htab->srelgot, SEC_ALLOC
1396 | SEC_LOAD
1397 | SEC_HAS_CONTENTS
1398 | SEC_IN_MEMORY
1399 | SEC_LINKER_CREATED
1400 | SEC_READONLY)
1401 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1402 return FALSE;
1403
1404 return TRUE;
1405}
1406
1407/* Look through the relocs for a section during the first phase. */
1408
1409static bfd_boolean
1410or1k_elf_check_relocs (bfd *abfd,
1411 struct bfd_link_info *info,
1412 asection *sec,
1413 const Elf_Internal_Rela *relocs)
1414{
1415 Elf_Internal_Shdr *symtab_hdr;
1416 struct elf_link_hash_entry **sym_hashes;
1417 const Elf_Internal_Rela *rel;
1418
1419 const Elf_Internal_Rela *rel_end;
1420 struct elf_or1k_link_hash_table *htab;
1421 bfd *dynobj;
1422 asection *sreloc = NULL;
1423
1424 if (info->relocatable)
1425 return TRUE;
1426
1427 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1428 sym_hashes = elf_sym_hashes (abfd);
1429
1430 htab = or1k_elf_hash_table (info);
1431 if (htab == NULL)
1432 return FALSE;
1433
1434 dynobj = htab->root.dynobj;
1435
1436 rel_end = relocs + sec->reloc_count;
1437 for (rel = relocs; rel < rel_end; rel++)
1438 {
1439 struct elf_link_hash_entry *h;
1440 unsigned long r_symndx;
1441 unsigned char tls_type;
1442
1443 r_symndx = ELF32_R_SYM (rel->r_info);
1444 if (r_symndx < symtab_hdr->sh_info)
1445 h = NULL;
1446 else
1447 {
1448 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1449 while (h->root.type == bfd_link_hash_indirect
1450 || h->root.type == bfd_link_hash_warning)
1451 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1452
1453 /* PR15323, ref flags aren't set for references in the same
1454 object. */
1455 h->root.non_ir_ref = 1;
1456 }
1457
1458 switch (ELF32_R_TYPE (rel->r_info))
1459 {
1460 case R_OR1K_TLS_GD_HI16:
1461 case R_OR1K_TLS_GD_LO16:
1462 tls_type = TLS_GD;
1463 break;
1464 case R_OR1K_TLS_LDM_HI16:
1465 case R_OR1K_TLS_LDM_LO16:
1466 case R_OR1K_TLS_LDO_HI16:
1467 case R_OR1K_TLS_LDO_LO16:
1468 tls_type = TLS_LD;
1469 break;
1470 case R_OR1K_TLS_IE_HI16:
1471 case R_OR1K_TLS_IE_LO16:
1472 tls_type = TLS_IE;
1473 break;
1474 case R_OR1K_TLS_LE_HI16:
1475 case R_OR1K_TLS_LE_LO16:
1476 tls_type = TLS_LE;
1477 break;
1478 default:
1479 tls_type = TLS_NONE;
1480 }
1481
1482 /* Record TLS type. */
1483 if (h != NULL)
1484 ((struct elf_or1k_link_hash_entry *) h)->tls_type = tls_type;
1485 else
1486 {
1487 unsigned char *local_tls_type;
1488
1489 /* This is a TLS type record for a local symbol. */
1490 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (abfd);
1491 if (local_tls_type == NULL)
1492 {
1493 bfd_size_type size;
1494
1495 size = symtab_hdr->sh_info;
1496 local_tls_type = bfd_zalloc (abfd, size);
1497 if (local_tls_type == NULL)
1498 return FALSE;
1499 elf_or1k_local_tls_type (abfd) = local_tls_type;
1500 }
1501 local_tls_type[r_symndx] = tls_type;
1502 }
1503
1504 switch (ELF32_R_TYPE (rel->r_info))
1505 {
1506 /* This relocation describes the C++ object vtable hierarchy.
1507 Reconstruct it for later use during GC. */
1508 case R_OR1K_GNU_VTINHERIT:
1509 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1510 return FALSE;
1511 break;
1512
1513 /* This relocation describes which C++ vtable entries are actually
1514 used. Record for later use during GC. */
1515 case R_OR1K_GNU_VTENTRY:
1516 BFD_ASSERT (h != NULL);
1517 if (h != NULL
1518 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1519 return FALSE;
1520 break;
1521
1522 /* This relocation requires .plt entry. */
1523 case R_OR1K_PLT26:
1524 if (h != NULL)
1525 {
1526 h->needs_plt = 1;
1527 h->plt.refcount += 1;
1528 }
1529 break;
1530
1531 case R_OR1K_GOT16:
1532 case R_OR1K_GOTOFF_HI16:
1533 case R_OR1K_GOTOFF_LO16:
1534 case R_OR1K_TLS_GD_HI16:
1535 case R_OR1K_TLS_GD_LO16:
1536 case R_OR1K_TLS_IE_HI16:
1537 case R_OR1K_TLS_IE_LO16:
1538 if (htab->sgot == NULL)
1539 {
1540 if (dynobj == NULL)
1541 htab->root.dynobj = dynobj = abfd;
1542 if (! create_got_section (dynobj, info))
1543 return FALSE;
1544 }
1545
73589c9d
CS		 1546 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_HI16 &&
1547 ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_LO16)
1548 {
1549 if (h != NULL)
1550 h->got.refcount += 1;
1551 else
1552 {
1553 bfd_signed_vma *local_got_refcounts;
1554
1555 /* This is a global offset table entry for a local symbol. */
1556 local_got_refcounts = elf_local_got_refcounts (abfd);
1557 if (local_got_refcounts == NULL)
1558 {
1559 bfd_size_type size;
1560
1561 size = symtab_hdr->sh_info;
1562 size *= sizeof (bfd_signed_vma);
1563 local_got_refcounts = bfd_zalloc (abfd, size);
1564 if (local_got_refcounts == NULL)
1565 return FALSE;
1566 elf_local_got_refcounts (abfd) = local_got_refcounts;
1567 }
1568 local_got_refcounts[r_symndx] += 1;
1569 }
1570 }
1571 break;
1572
1573 case R_OR1K_INSN_REL_26:
1574 case R_OR1K_HI_16_IN_INSN:
1575 case R_OR1K_LO_16_IN_INSN:
1576 case R_OR1K_32:
1577 /* R_OR1K_16? */
1578 {
1579 if (h != NULL && !info->shared)
1580 {
1581 /* We may need a copy reloc. */
1582 h->non_got_ref = 1;
1583
1584 /* We may also need a .plt entry. */
1585 h->plt.refcount += 1;
1586 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26)
1587 h->pointer_equality_needed = 1;
1588 }
1589
1590 /* If we are creating a shared library, and this is a reloc
1591 against a global symbol, or a non PC relative reloc
1592 against a local symbol, then we need to copy the reloc
1593 into the shared library. However, if we are linking with
1594 -Bsymbolic, we do not need to copy a reloc against a
1595 global symbol which is defined in an object we are
1596 including in the link (i.e., DEF_REGULAR is set). At
1597 this point we have not seen all the input files, so it is
1598 possible that DEF_REGULAR is not set now but will be set
1599 later (it is never cleared). In case of a weak definition,
1600 DEF_REGULAR may be cleared later by a strong definition in
1601 a shared library. We account for that possibility below by
1602 storing information in the relocs_copied field of the hash
1603 table entry. A similar situation occurs when creating
1604 shared libraries and symbol visibility changes render the
1605 symbol local.
1606
1607 If on the other hand, we are creating an executable, we
1608 may need to keep relocations for symbols satisfied by a
1609 dynamic library if we manage to avoid copy relocs for the
1610 symbol. */
1611
1612 if ((info->shared
1613 && (sec->flags & SEC_ALLOC) != 0
1614 && (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26
1615 || (h != NULL
1616 && (! info->symbolic
1617 || h->root.type == bfd_link_hash_defweak
1618 || !h->def_regular))))
1619 || (!info->shared
1620 && (sec->flags & SEC_ALLOC) != 0
1621 && h != NULL
1622 && (h->root.type == bfd_link_hash_defweak
1623 || !h->def_regular)))
1624 {
1625 struct elf_or1k_dyn_relocs *p;
1626 struct elf_or1k_dyn_relocs **head;
1627
1628 /* When creating a shared object, we must copy these
1629 relocs into the output file. We create a reloc
1630 section in dynobj and make room for the reloc. */
1631 if (sreloc == NULL)
1632 {
1633 const char *name;
1634 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1635 unsigned int shnam = _bfd_elf_single_rel_hdr (sec)->sh_name;
1636
1637 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
1638 if (name == NULL)
1639 return FALSE;
1640
1641 if (strncmp (name, ".rela", 5) != 0
1642 || strcmp (bfd_get_section_name (abfd, sec),
1643 name + 5) != 0)
1644 {
1645 (*_bfd_error_handler)
1646 (_("%B: bad relocation section name `%s\'"),
1647 abfd, name);
1648 }
1649
1650 if (htab->root.dynobj == NULL)
1651 htab->root.dynobj = abfd;
1652 dynobj = htab->root.dynobj;
1653
1654 sreloc = bfd_get_section_by_name (dynobj, name);
1655 if (sreloc == NULL)
1656 {
1657 sreloc = _bfd_elf_make_dynamic_reloc_section
1658 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
1659
1660 if (sreloc == NULL)
1661 return FALSE;
1662 }
1663 elf_section_data (sec)->sreloc = sreloc;
1664 }
1665
1666 /* If this is a global symbol, we count the number of
1667 relocations we need for this symbol. */
1668 if (h != NULL)
1669 head = &((struct elf_or1k_link_hash_entry *) h)->dyn_relocs;
1670 else
1671 {
1672 /* Track dynamic relocs needed for local syms too.
1673 We really need local syms available to do this
1674 easily. Oh well. */
1675
1676 asection *s;
1677 Elf_Internal_Sym *isym;
1678 void *vpp;
1679
1680 isym = bfd_sym_from_r_symndx (&htab->sym_sec,
1681 abfd, r_symndx);
1682 if (isym == NULL)
1683 return FALSE;
1684
1685 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1686 if (s == NULL)
1687 return FALSE;
1688
1689 vpp = &elf_section_data (s)->local_dynrel;
1690 head = (struct elf_or1k_dyn_relocs **) vpp;
1691 }
1692
1693 p = *head;
1694 if (p == NULL || p->sec != sec)
1695 {
1696 bfd_size_type amt = sizeof *p;
1697 p = ((struct elf_or1k_dyn_relocs *)
1698 bfd_alloc (htab->root.dynobj, amt));
1699 if (p == NULL)
1700 return FALSE;
1701 p->next = *head;
1702 *head = p;
1703 p->sec = sec;
1704 p->count = 0;
1705 p->pc_count = 0;
1706 }
1707
1708 p->count += 1;
1709 if (ELF32_R_TYPE (rel->r_info) == R_OR1K_INSN_REL_26)
1710 p->pc_count += 1;
1711 }
1712 }
1713 break;
1714 }
1715 }
1716
1717 return TRUE;
1718}
1719
1720/* Finish up the dynamic sections. */
1721
1722static bfd_boolean
1723or1k_elf_finish_dynamic_sections (bfd *output_bfd,
1724 struct bfd_link_info *info)
1725{
1726 bfd *dynobj;
1727 asection *sdyn, *sgot;
1728 struct elf_or1k_link_hash_table *htab;
1729
1730 htab = or1k_elf_hash_table (info);
1731 if (htab == NULL)
1732 return FALSE;
1733
1734 dynobj = htab->root.dynobj;
1735
1736 sgot = htab->sgotplt;
1737 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1738
1739 if (htab->root.dynamic_sections_created)
1740 {
1741 asection *splt;
1742 Elf32_External_Dyn *dyncon, *dynconend;
1743
1744 BFD_ASSERT (sgot != NULL && sdyn != NULL);
1745
1746 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1747 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1748
1749 for (; dyncon < dynconend; dyncon++)
1750 {
1751 Elf_Internal_Dyn dyn;
1752 asection *s;
1753
1754 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1755
1756 switch (dyn.d_tag)
1757 {
1758 default:
1759 continue;
1760
1761 case DT_PLTGOT:
1762 s = htab->sgot->output_section;
1763 BFD_ASSERT (s != NULL);
1764 dyn.d_un.d_ptr = s->vma;
1765 break;
1766
1767 case DT_JMPREL:
1768 s = htab->srelplt->output_section;
1769 BFD_ASSERT (s != NULL);
1770 dyn.d_un.d_ptr = s->vma;
1771 break;
1772
1773 case DT_PLTRELSZ:
1774 s = htab->srelplt->output_section;
1775 BFD_ASSERT (s != NULL);
1776 dyn.d_un.d_val = s->size;
1777 break;
1778
1779 case DT_RELASZ:
1780 /* My reading of the SVR4 ABI indicates that the
1781 procedure linkage table relocs (DT_JMPREL) should be
1782 included in the overall relocs (DT_RELA). This is
1783 what Solaris does. However, UnixWare can not handle
1784 that case. Therefore, we override the DT_RELASZ entry
1785 here to make it not include the JMPREL relocs. Since
1786 the linker script arranges for .rela.plt to follow all
1787 other relocation sections, we don't have to worry
1788 about changing the DT_RELA entry. */
1789 if (htab->srelplt != NULL)
1790 {
1791 /* FIXME: this calculation sometimes produces
1792 wrong result, the problem is that the dyn.d_un.d_val
1793 is not always correct, needs investigation why
1794 that happens. In the meantime, reading the
1795 ".rela.dyn" section by name seems to yield
1796 correct result.
1797
1798 s = htab->srelplt->output_section;
1799 dyn.d_un.d_val -= s->size;
1800 */
1801
1802 s = bfd_get_section_by_name (output_bfd, ".rela.dyn");
1803 dyn.d_un.d_val = s ? s->size : 0;
1804 }
1805 break;
1806 }
1807 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1808 }
1809
1810
1811 /* Fill in the first entry in the procedure linkage table. */
1812 splt = htab->splt;
1813 if (splt && splt->size > 0)
1814 {
1815 if (info->shared)
1816 {
1817 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0,
1818 splt->contents);
1819 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1,
1820 splt->contents + 4);
1821 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2,
1822 splt->contents + 8);
1823 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3,
1824 splt->contents + 12);
1825 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4,
1826 splt->contents + 16);
1827 }
1828 else
1829 {
1830 unsigned long addr;
1831 /* addr = .got + 4 */
1832 addr = sgot->output_section->vma + sgot->output_offset + 4;
1833 bfd_put_32 (output_bfd,
1834 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1835 splt->contents);
1836 bfd_put_32 (output_bfd,
1837 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1838 splt->contents + 4);
1839 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1840 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1841 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1842 }
1843
1844 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
1845 }
1846 }
1847
1848 /* Set the first entry in the global offset table to the address of
1849 the dynamic section. */
1850 if (sgot && sgot->size > 0)
1851 {
1852 if (sdyn == NULL)
1853 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1854 else
1855 bfd_put_32 (output_bfd,
1856 sdyn->output_section->vma + sdyn->output_offset,
1857 sgot->contents);
1858 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1859 }
1860
1861 if (htab->sgot && htab->sgot->size > 0)
1862 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
1863
1864 return TRUE;
1865}
1866
1867/* Finish up dynamic symbol handling. We set the contents of various
1868 dynamic sections here. */
1869
1870static bfd_boolean
1871or1k_elf_finish_dynamic_symbol (bfd *output_bfd,
1872 struct bfd_link_info *info,
1873 struct elf_link_hash_entry *h,
1874 Elf_Internal_Sym *sym)
1875{
1876 struct elf_or1k_link_hash_table *htab;
1877 bfd_byte *loc;
1878
1879 htab = or1k_elf_hash_table (info);
1880 if (htab == NULL)
1881 return FALSE;
1882
1883 if (h->plt.offset != (bfd_vma) -1)
1884 {
1885 asection *splt;
1886 asection *sgot;
1887 asection *srela;
1888
1889 bfd_vma plt_index;
1890 bfd_vma got_offset;
1891 bfd_vma got_addr;
1892 Elf_Internal_Rela rela;
1893
1894 /* This symbol has an entry in the procedure linkage table. Set
1895 it up. */
1896 BFD_ASSERT (h->dynindx != -1);
1897
1898 splt = htab->splt;
1899 sgot = htab->sgotplt;
1900 srela = htab->srelplt;
1901 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1902
1903 /* Get the index in the procedure linkage table which
1904 corresponds to this symbol. This is the index of this symbol
1905 in all the symbols for which we are making plt entries. The
1906 first entry in the procedure linkage table is reserved. */
1907 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1908
1909 /* Get the offset into the .got table of the entry that
1910 corresponds to this function. Each .got entry is 4 bytes.
1911 The first three are reserved. */
1912 got_offset = (plt_index + 3) * 4;
1913 got_addr = got_offset;
1914
1915 /* Fill in the entry in the procedure linkage table. */
1916 if (! info->shared)
1917 {
1918 got_addr += htab->sgotplt->output_section->vma
1919 + htab->sgotplt->output_offset;
1920 bfd_put_32 (output_bfd, PLT_ENTRY_WORD0 | ((got_addr >> 16) & 0xffff),
1921 splt->contents + h->plt.offset);
1922 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1 | (got_addr & 0xffff),
1923 splt->contents + h->plt.offset + 4);
1924 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
1925 splt->contents + h->plt.offset + 8);
1926 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
1927 splt->contents + h->plt.offset + 12);
1928 bfd_put_32 (output_bfd, PLT_ENTRY_WORD4
1929 | plt_index * sizeof (Elf32_External_Rela),
1930 splt->contents + h->plt.offset + 16);
1931 }
1932 else
1933 {
1934 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD0 | (got_addr & 0xffff),
1935 splt->contents + h->plt.offset);
1936 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD1
1937 | plt_index * sizeof (Elf32_External_Rela),
1938 splt->contents + h->plt.offset + 4);
1939 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
1940 splt->contents + h->plt.offset + 8);
1941 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
1942 splt->contents + h->plt.offset + 12);
1943 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
1944 splt->contents + h->plt.offset + 16);
1945 }
1946
1947 /* Fill in the entry in the global offset table. */
1948 bfd_put_32 (output_bfd,
1949 (splt->output_section->vma
1950 + splt->output_offset), /* Same offset. */
1951 sgot->contents + got_offset);
1952
1953 /* Fill in the entry in the .rela.plt section. */
1954 rela.r_offset = (sgot->output_section->vma
1955 + sgot->output_offset
1956 + got_offset);
1957 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT);
1958 rela.r_addend = 0;
1959 loc = srela->contents;
1960 loc += plt_index * sizeof (Elf32_External_Rela);
1961 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1962
1963 if (!h->def_regular)
1964 {
1965 /* Mark the symbol as undefined, rather than as defined in
1966 the .plt section. Leave the value alone. */
1967 sym->st_shndx = SHN_UNDEF;
1968 }
1969
1970 }
1971
1972 if (h->got.offset != (bfd_vma) -1
1973 && (h->got.offset & 2) == 0) /* Homemade TLS check. */
1974 {
1975 asection *sgot;
1976 asection *srela;
1977 Elf_Internal_Rela rela;
1978
1979 /* This symbol has an entry in the global offset table. Set it
1980 up. */
1981 sgot = htab->sgot;
1982 srela = htab->srelgot;
1983 BFD_ASSERT (sgot != NULL && srela != NULL);
1984
1985 rela.r_offset = (sgot->output_section->vma
1986 + sgot->output_offset
1987 + (h->got.offset &~ 1));
1988
1989 /* If this is a -Bsymbolic link, and the symbol is defined
1990 locally, we just want to emit a RELATIVE reloc. Likewise if
1991 the symbol was forced to be local because of a version file.
1992 The entry in the global offset table will already have been
1993 initialized in the relocate_section function. */
1994 if (info->shared
1995 && (info->symbolic
1996 || h->dynindx == -1
1997 || h->forced_local)
1998 && h->def_regular)
1999 {
2000 rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
2001 rela.r_addend = (h->root.u.def.value
2002 + h->root.u.def.section->output_section->vma
2003 + h->root.u.def.section->output_offset);
2004 }
2005 else
2006 {
2007 BFD_ASSERT ((h->got.offset & 1) == 0);
2008 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
2009 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT);
2010 rela.r_addend = 0;
2011 }
2012
2013 loc = srela->contents;
2014 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
2015 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2016 ++srela->reloc_count;
2017 }
2018
2019 if (h->needs_copy)
2020 {
2021 asection *s;
2022 Elf_Internal_Rela rela;
2023
2024 /* This symbols needs a copy reloc. Set it up. */
2025 BFD_ASSERT (h->dynindx != -1
2026 && (h->root.type == bfd_link_hash_defined
2027 || h->root.type == bfd_link_hash_defweak));
2028
2029 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2030 ".rela.bss");
2031 BFD_ASSERT (s != NULL);
2032
2033 rela.r_offset = (h->root.u.def.value
2034 + h->root.u.def.section->output_section->vma
2035 + h->root.u.def.section->output_offset);
2036 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY);
2037 rela.r_addend = 0;
2038 loc = s->contents;
2039 loc += s->reloc_count * sizeof (Elf32_External_Rela);
2040 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2041 ++s->reloc_count;
2042 }
2043
2044 /* Mark some specially defined symbols as absolute. */
2045 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2046 || h == htab->root.hgot)
2047 sym->st_shndx = SHN_ABS;
2048
2049 return TRUE;
2050}
2051
2052static enum elf_reloc_type_class
2053or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
2054 const asection *rel_sec ATTRIBUTE_UNUSED,
2055 const Elf_Internal_Rela *rela)
2056{
2057 switch ((int) ELF32_R_TYPE (rela->r_info))
2058 {
2059 case R_OR1K_RELATIVE: return reloc_class_relative;
2060 case R_OR1K_JMP_SLOT: return reloc_class_plt;
2061 case R_OR1K_COPY: return reloc_class_copy;
2062 default: return reloc_class_normal;
2063 }
2064}
2065
2066/* Adjust a symbol defined by a dynamic object and referenced by a
2067 regular object. The current definition is in some section of the
2068 dynamic object, but we're not including those sections. We have to
2069 change the definition to something the rest of the link can
2070 understand. */
2071
2072static bfd_boolean
2073or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2074 struct elf_link_hash_entry *h)
2075{
2076 struct elf_or1k_link_hash_table *htab;
2077 struct elf_or1k_link_hash_entry *eh;
2078 struct elf_or1k_dyn_relocs *p;
2079 bfd *dynobj;
2080 asection *s;
2081
2082 dynobj = elf_hash_table (info)->dynobj;
2083
2084 /* Make sure we know what is going on here. */
2085 BFD_ASSERT (dynobj != NULL
2086 && (h->needs_plt
2087 || h->u.weakdef != NULL
2088 || (h->def_dynamic
2089 && h->ref_regular
2090 && !h->def_regular)));
2091
2092 /* If this is a function, put it in the procedure linkage table. We
2093 will fill in the contents of the procedure linkage table later,
2094 when we know the address of the .got section. */
2095 if (h->type == STT_FUNC
2096 || h->needs_plt)
2097 {
2098 if (! info->shared
2099 && !h->def_dynamic
2100 && !h->ref_dynamic
2101 && h->root.type != bfd_link_hash_undefweak
2102 && h->root.type != bfd_link_hash_undefined)
2103 {
2104 /* This case can occur if we saw a PLT reloc in an input
2105 file, but the symbol was never referred to by a dynamic
2106 object. In such a case, we don't actually need to build
2107 a procedure linkage table, and we can just do a PCREL
2108 reloc instead. */
2109 h->plt.offset = (bfd_vma) -1;
2110 h->needs_plt = 0;
2111 }
2112
2113 return TRUE;
2114 }
2115 else
2116 h->plt.offset = (bfd_vma) -1;
2117
2118 /* If this is a weak symbol, and there is a real definition, the
2119 processor independent code will have arranged for us to see the
2120 real definition first, and we can just use the same value. */
2121 if (h->u.weakdef != NULL)
2122 {
2123 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2124 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2125 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2126 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2127 return TRUE;
2128 }
2129
2130 /* This is a reference to a symbol defined by a dynamic object which
2131 is not a function. */
2132
2133 /* If we are creating a shared library, we must presume that the
2134 only references to the symbol are via the global offset table.
2135 For such cases we need not do anything here; the relocations will
2136 be handled correctly by relocate_section. */
2137 if (info->shared)
2138 return TRUE;
2139
2140 /* If there are no references to this symbol that do not use the
2141 GOT, we don't need to generate a copy reloc. */
2142 if (!h->non_got_ref)
2143 return TRUE;
2144
2145 /* If -z nocopyreloc was given, we won't generate them either. */
2146 if (info->nocopyreloc)
2147 {
2148 h->non_got_ref = 0;
2149 return TRUE;
2150 }
2151
2152 eh = (struct elf_or1k_link_hash_entry *) h;
2153 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2154 {
2155 s = p->sec->output_section;
2156 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2157 break;
2158 }
2159
2160 /* If we didn't find any dynamic relocs in sections which needs the
2161 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2162 the copy reloc. */
2163 if (p == NULL)
2164 {
2165 h->non_got_ref = 0;
2166 return TRUE;
2167 }
2168
2169 /* We must allocate the symbol in our .dynbss section, which will
2170 become part of the .bss section of the executable. There will be
2171 an entry for this symbol in the .dynsym section. The dynamic
2172 object will contain position independent code, so all references
2173 from the dynamic object to this symbol will go through the global
2174 offset table. The dynamic linker will use the .dynsym entry to
2175 determine the address it must put in the global offset table, so
2176 both the dynamic object and the regular object will refer to the
2177 same memory location for the variable. */
2178
2179 htab = or1k_elf_hash_table (info);
2180 if (htab == NULL)
2181 return FALSE;
2182
2183 s = htab->sdynbss;
2184 BFD_ASSERT (s != NULL);
2185
2186 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2187 to copy the initial value out of the dynamic object and into the
2188 runtime process image. We need to remember the offset into the
2189 .rela.bss section we are going to use. */
2190 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2191 {
2192 asection *srel;
2193
2194 srel = htab->srelbss;
2195 BFD_ASSERT (srel != NULL);
2196 srel->size += sizeof (Elf32_External_Rela);
2197 h->needs_copy = 1;
2198 }
2199
2200 return _bfd_elf_adjust_dynamic_copy (h, s);
2201}
2202
2203/* Allocate space in .plt, .got and associated reloc sections for
2204 dynamic relocs. */
2205
2206static bfd_boolean
2207allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2208{
2209 struct bfd_link_info *info;
2210 struct elf_or1k_link_hash_table *htab;
2211 struct elf_or1k_link_hash_entry *eh;
2212 struct elf_or1k_dyn_relocs *p;
2213
2214 if (h->root.type == bfd_link_hash_indirect)
2215 return TRUE;
2216
2217 info = (struct bfd_link_info *) inf;
2218 htab = or1k_elf_hash_table (info);
2219 if (htab == NULL)
2220 return FALSE;
2221
2222 eh = (struct elf_or1k_link_hash_entry *) h;
2223
2224 if (htab->root.dynamic_sections_created
2225 && h->plt.refcount > 0)
2226 {
2227 /* Make sure this symbol is output as a dynamic symbol.
2228 Undefined weak syms won't yet be marked as dynamic. */
2229 if (h->dynindx == -1
2230 && !h->forced_local)
2231 {
2232 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2233 return FALSE;
2234 }
2235
2236 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2237 {
2238 asection *s = htab->splt;
2239
2240 /* If this is the first .plt entry, make room for the special
2241 first entry. */
2242 if (s->size == 0)
2243 s->size = PLT_ENTRY_SIZE;
2244
2245 h->plt.offset = s->size;
2246
2247 /* If this symbol is not defined in a regular file, and we are
2248 not generating a shared library, then set the symbol to this
2249 location in the .plt. This is required to make function
2250 pointers compare as equal between the normal executable and
2251 the shared library. */
2252 if (! info->shared
2253 && !h->def_regular)
2254 {
2255 h->root.u.def.section = s;
2256 h->root.u.def.value = h->plt.offset;
2257 }
2258
2259 /* Make room for this entry. */
2260 s->size += PLT_ENTRY_SIZE;
2261
2262 /* We also need to make an entry in the .got.plt section, which
2263 will be placed in the .got section by the linker script. */
2264 htab->sgotplt->size += 4;
2265
2266 /* We also need to make an entry in the .rel.plt section. */
2267 htab->srelplt->size += sizeof (Elf32_External_Rela);
2268 }
2269 else
2270 {
2271 h->plt.offset = (bfd_vma) -1;
2272 h->needs_plt = 0;
2273 }
2274 }
2275 else
2276 {
2277 h->plt.offset = (bfd_vma) -1;
2278 h->needs_plt = 0;
2279 }
2280
2281 if (h->got.refcount > 0)
2282 {
2283 asection *s;
2284 bfd_boolean dyn;
2285 unsigned char tls_type;
2286
2287 /* Make sure this symbol is output as a dynamic symbol.
2288 Undefined weak syms won't yet be marked as dynamic. */
2289 if (h->dynindx == -1
2290 && !h->forced_local)
2291 {
2292 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2293 return FALSE;
2294 }
2295
2296 s = htab->sgot;
2297
2298 h->got.offset = s->size;
2299
2300 tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type;
2301
2302 /* TLS GD requires two GOT and two relocs. */
2303 if (tls_type == TLS_GD)
2304 s->size += 8;
2305 else
2306 s->size += 4;
2307 dyn = htab->root.dynamic_sections_created;
2308 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2309 {
2310 if (tls_type == TLS_GD)
2311 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2312 else
2313 htab->srelgot->size += sizeof (Elf32_External_Rela);
2314 }
2315 }
2316 else
2317 h->got.offset = (bfd_vma) -1;
2318
2319 if (eh->dyn_relocs == NULL)
2320 return TRUE;
2321
2322 /* In the shared -Bsymbolic case, discard space allocated for
2323 dynamic pc-relative relocs against symbols which turn out to be
2324 defined in regular objects. For the normal shared case, discard
2325 space for pc-relative relocs that have become local due to symbol
2326 visibility changes. */
2327
2328 if (info->shared)
2329 {
2330 if (h->def_regular
2331 && (h->forced_local
2332 || info->symbolic))
2333 {
2334 struct elf_or1k_dyn_relocs **pp;
2335
2336 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2337 {
2338 p->count -= p->pc_count;
2339 p->pc_count = 0;
2340 if (p->count == 0)
2341 *pp = p->next;
2342 else
2343 pp = &p->next;
2344 }
2345 }
2346
2347 /* Also discard relocs on undefined weak syms with non-default
2348 visibility. */
2349 if (eh->dyn_relocs != NULL
2350 && h->root.type == bfd_link_hash_undefweak)
2351 {
2352 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2353 eh->dyn_relocs = NULL;
2354
2355 /* Make sure undefined weak symbols are output as a dynamic
2356 symbol in PIEs. */
2357 else if (h->dynindx == -1
2358 && !h->forced_local)
2359 {
2360 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2361 return FALSE;
2362 }
2363 }
2364 }
2365 else
2366 {
2367 /* For the non-shared case, discard space for relocs against
2368 symbols which turn out to need copy relocs or are not
2369 dynamic. */
2370
2371 if (!h->non_got_ref
2372 && ((h->def_dynamic
2373 && !h->def_regular)
2374 || (htab->root.dynamic_sections_created
2375 && (h->root.type == bfd_link_hash_undefweak
2376 || h->root.type == bfd_link_hash_undefined))))
2377 {
2378 /* Make sure this symbol is output as a dynamic symbol.
2379 Undefined weak syms won't yet be marked as dynamic. */
2380 if (h->dynindx == -1
2381 && !h->forced_local)
2382 {
2383 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2384 return FALSE;
2385 }
2386
2387 /* If that succeeded, we know we'll be keeping all the
2388 relocs. */
2389 if (h->dynindx != -1)
2390 goto keep;
2391 }
2392
2393 eh->dyn_relocs = NULL;
2394
2395 keep: ;
2396 }
2397
2398 /* Finally, allocate space. */
2399 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2400 {
2401 asection *sreloc = elf_section_data (p->sec)->sreloc;
2402 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2403 }
2404
2405 return TRUE;
2406}
2407
2408/* Find any dynamic relocs that apply to read-only sections. */
2409
2410static bfd_boolean
2411readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2412{
2413 struct elf_or1k_link_hash_entry *eh;
2414 struct elf_or1k_dyn_relocs *p;
2415
2416 eh = (struct elf_or1k_link_hash_entry *) h;
2417 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2418 {
2419 asection *s = p->sec->output_section;
2420
2421 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2422 {
2423 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2424
2425 info->flags |= DF_TEXTREL;
2426
2427 /* Not an error, just cut short the traversal. */
2428 return FALSE;
2429 }
2430 }
2431 return TRUE;
2432}
2433
2434/* Set the sizes of the dynamic sections. */
2435
2436static bfd_boolean
2437or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2438 struct bfd_link_info *info)
2439{
2440 struct elf_or1k_link_hash_table *htab;
2441 bfd *dynobj;
2442 asection *s;
2443 bfd_boolean relocs;
2444 bfd *ibfd;
2445
2446 htab = or1k_elf_hash_table (info);
2447 if (htab == NULL)
2448 return FALSE;
2449
2450 dynobj = htab->root.dynobj;
2451 BFD_ASSERT (dynobj != NULL);
2452
2453 if (htab->root.dynamic_sections_created)
2454 {
2455 /* Set the contents of the .interp section to the interpreter. */
2456 if (info->executable)
2457 {
2458 s = bfd_get_section_by_name (dynobj, ".interp");
2459 BFD_ASSERT (s != NULL);
2460 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2461 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2462 }
2463 }
2464
2465 /* Set up .got offsets for local syms, and space for local dynamic
2466 relocs. */
2467 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2468 {
2469 bfd_signed_vma *local_got;
2470 bfd_signed_vma *end_local_got;
2471 bfd_size_type locsymcount;
2472 Elf_Internal_Shdr *symtab_hdr;
2473 unsigned char *local_tls_type;
2474 asection *srel;
2475
2476 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2477 continue;
2478
2479 for (s = ibfd->sections; s != NULL; s = s->next)
2480 {
2481 struct elf_or1k_dyn_relocs *p;
2482
2483 for (p = ((struct elf_or1k_dyn_relocs *)
2484 elf_section_data (s)->local_dynrel);
2485 p != NULL;
2486 p = p->next)
2487 {
2488 if (! bfd_is_abs_section (p->sec)
2489 && bfd_is_abs_section (p->sec->output_section))
2490 {
2491 /* Input section has been discarded, either because
2492 it is a copy of a linkonce section or due to
2493 linker script /DISCARD/, so we'll be discarding
2494 the relocs too. */
2495 }
2496 else if (p->count != 0)
2497 {
2498 srel = elf_section_data (p->sec)->sreloc;
2499 srel->size += p->count * sizeof (Elf32_External_Rela);
2500 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2501 info->flags |= DF_TEXTREL;
2502 }
2503 }
2504 }
2505
2506 local_got = elf_local_got_refcounts (ibfd);
2507 if (!local_got)
2508 continue;
2509
2510 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2511 locsymcount = symtab_hdr->sh_info;
2512 end_local_got = local_got + locsymcount;
2513 s = htab->sgot;
2514 srel = htab->srelgot;
2515 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd);
2516 for (; local_got < end_local_got; ++local_got)
2517 {
2518 if (*local_got > 0)
2519 {
2520 *local_got = s->size;
2521
2522 /* TLS GD requires two GOT and two relocs. */
2523 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2524 s->size += 8;
2525 else
2526 s->size += 4;
2527 if (info->shared)
2528 {
2529 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2530 srel->size += 2 * sizeof (Elf32_External_Rela);
2531 else
2532 srel->size += sizeof (Elf32_External_Rela);
2533 }
2534 }
2535 else
2536
2537 *local_got = (bfd_vma) -1;
2538
2539 if (local_tls_type)
2540 ++local_tls_type;
2541 }
2542 }
2543
2544 /* Allocate global sym .plt and .got entries, and space for global
2545 sym dynamic relocs. */
2546 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2547
2548 /* We now have determined the sizes of the various dynamic sections.
2549 Allocate memory for them. */
2550 relocs = FALSE;
2551 for (s = dynobj->sections; s != NULL; s = s->next)
2552 {
2553 if ((s->flags & SEC_LINKER_CREATED) == 0)
2554 continue;
2555
2556 if (s == htab->splt
2557 || s == htab->sgot
2558 || s == htab->sgotplt
2559 || s == htab->sdynbss)
2560 {
2561 /* Strip this section if we don't need it; see the
2562 comment below. */
2563 }
2564 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2565 {
2566 if (s->size != 0 && s != htab->srelplt)
2567 relocs = TRUE;
2568
2569 /* We use the reloc_count field as a counter if we need
2570 to copy relocs into the output file. */
2571 s->reloc_count = 0;
2572 }
2573 else
2574 /* It's not one of our sections, so don't allocate space. */
2575 continue;
2576
2577 if (s->size == 0)
2578 {
2579 /* If we don't need this section, strip it from the
2580 output file. This is mostly to handle .rela.bss and
2581 .rela.plt. We must create both sections in
2582 create_dynamic_sections, because they must be created
2583 before the linker maps input sections to output
2584 sections. The linker does that before
2585 adjust_dynamic_symbol is called, and it is that
2586 function which decides whether anything needs to go
2587 into these sections. */
2588 s->flags |= SEC_EXCLUDE;
2589 continue;
2590 }
2591
2592 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2593 continue;
2594
2595 /* Allocate memory for the section contents. We use bfd_zalloc
2596 here in case unused entries are not reclaimed before the
2597 section's contents are written out. This should not happen,
2598 but this way if it does, we get a R_OR1K_NONE reloc instead
2599 of garbage. */
2600 s->contents = bfd_zalloc (dynobj, s->size);
2601
2602 if (s->contents == NULL)
2603 return FALSE;
2604 }
2605
2606 if (htab->root.dynamic_sections_created)
2607 {
2608 /* Add some entries to the .dynamic section. We fill in the
2609 values later, in or1k_elf_finish_dynamic_sections, but we
2610 must add the entries now so that we get the correct size for
2611 the .dynamic section. The DT_DEBUG entry is filled in by the
2612 dynamic linker and used by the debugger. */
2613#define add_dynamic_entry(TAG, VAL) \
2614 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2615
2616 if (info->executable)
2617 {
2618 if (! add_dynamic_entry (DT_DEBUG, 0))
2619 return FALSE;
2620 }
2621
2622 if (htab->splt->size != 0)
2623 {
2624 if (! add_dynamic_entry (DT_PLTGOT, 0)
2625 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2626 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2627 || ! add_dynamic_entry (DT_JMPREL, 0))
2628 return FALSE;
2629 }
2630
2631 if (relocs)
2632 {
2633 if (! add_dynamic_entry (DT_RELA, 0)
2634 || ! add_dynamic_entry (DT_RELASZ, 0)
2635 || ! add_dynamic_entry (DT_RELAENT,
2636 sizeof (Elf32_External_Rela)))
2637 return FALSE;
2638
2639 /* If any dynamic relocs apply to a read-only section,
2640 then we need a DT_TEXTREL entry. */
2641 if ((info->flags & DF_TEXTREL) == 0)
2642 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2643 info);
2644
2645 if ((info->flags & DF_TEXTREL) != 0)
2646 {
2647 if (! add_dynamic_entry (DT_TEXTREL, 0))
2648 return FALSE;
2649 }
2650 }
2651 }
2652
2653#undef add_dynamic_entry
2654 return TRUE;
2655}
2656
2657/* Create dynamic sections when linking against a dynamic object. */
2658
2659static bfd_boolean
2660or1k_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2661{
2662 struct elf_or1k_link_hash_table *htab;
2663
2664 htab = or1k_elf_hash_table (info);
2665 if (htab == NULL)
2666 return FALSE;
2667
2668 if (!htab->sgot && !create_got_section (dynobj, info))
2669 return FALSE;
2670
2671 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2672 return FALSE;
2673
2674 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2675 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
2676 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2677 if (!info->shared)
2678 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2679
2680 if (!htab->splt || !htab->srelplt || !htab->sdynbss
2681 || (!info->shared && !htab->srelbss))
2682 abort ();
2683
2684 return TRUE;
2685}
2686
2687/* Copy the extra info we tack onto an elf_link_hash_entry. */
2688
2689static void
2690or1k_elf_copy_indirect_symbol (struct bfd_link_info *info,
2691 struct elf_link_hash_entry *dir,
2692 struct elf_link_hash_entry *ind)
2693{
2694 struct elf_or1k_link_hash_entry * edir;
2695 struct elf_or1k_link_hash_entry * eind;
2696
2697 edir = (struct elf_or1k_link_hash_entry *) dir;
2698 eind = (struct elf_or1k_link_hash_entry *) ind;
2699
2700 if (eind->dyn_relocs != NULL)
2701 {
2702 if (edir->dyn_relocs != NULL)
2703 {
2704 struct elf_or1k_dyn_relocs **pp;
2705 struct elf_or1k_dyn_relocs *p;
2706
2707 /* Add reloc counts against the indirect sym to the direct sym
2708 list. Merge any entries against the same section. */
2709 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2710 {
2711 struct elf_or1k_dyn_relocs *q;
2712
2713 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2714 if (q->sec == p->sec)
2715 {
2716 q->pc_count += p->pc_count;
2717 q->count += p->count;
2718 *pp = p->next;
2719 break;
2720 }
2721 if (q == NULL)
2722 pp = &p->next;
2723 }
2724 *pp = edir->dyn_relocs;
2725 }
2726
2727 edir->dyn_relocs = eind->dyn_relocs;
2728 eind->dyn_relocs = NULL;
2729 }
2730
2731 if (ind->root.type == bfd_link_hash_indirect)
2732 {
2733 if (dir->got.refcount <= 0)
2734 {
2735 edir->tls_type = eind->tls_type;
2736 eind->tls_type = TLS_UNKNOWN;
2737 }
2738 }
2739
2740 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2741}
2742
2743/* Set the right machine number. */
2744
2745static bfd_boolean
2746or1k_elf_object_p (bfd *abfd)
2747{
2748 unsigned long mach = bfd_mach_or1k;
2749
2750 if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY)
2751 mach = bfd_mach_or1knd;
2752
2753 return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach);
2754}
2755
2756/* Store the machine number in the flags field. */
2757
2758static void
2759or1k_elf_final_write_processing (bfd *abfd,
2760 bfd_boolean linker ATTRIBUTE_UNUSED)
2761{
2762 switch (bfd_get_mach (abfd))
2763 {
2764 default:
2765 case bfd_mach_or1k:
2766 break;
2767 case bfd_mach_or1knd:
2768 elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY;
2769 break;
2770 }
2771}
2772
2773static bfd_boolean
2774or1k_elf_set_private_flags (bfd *abfd, flagword flags)
2775{
2776 BFD_ASSERT (!elf_flags_init (abfd)
2777 || elf_elfheader (abfd)->e_flags == flags);
2778
2779 elf_elfheader (abfd)->e_flags = flags;
2780 elf_flags_init (abfd) = TRUE;
2781 return TRUE;
2782}
2783
2784/* Make sure all input files are consistent with respect to
2785 EF_OR1K_NODELAY flag setting. */
2786
2787static bfd_boolean
2788elf32_or1k_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2789{
2790 flagword out_flags;
2791 flagword in_flags;
2792
2793 in_flags = elf_elfheader (ibfd)->e_flags;
2794 out_flags = elf_elfheader (obfd)->e_flags;
2795
2796 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2797 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2798 return TRUE;
2799
2800 if (!elf_flags_init (obfd))
2801 {
2802 elf_flags_init (obfd) = TRUE;
2803 elf_elfheader (obfd)->e_flags = in_flags;
2804
2805 return TRUE;
2806 }
2807
2808 if (in_flags == out_flags)
2809 return TRUE;
2810
2811 if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY))
2812 {
2813 (*_bfd_error_handler)
2814 (_("%B: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd);
2815
2816 bfd_set_error (bfd_error_bad_value);
2817 return FALSE;
2818 }
2819
2820 return TRUE;
2821
2822}
2823
2824#define ELF_ARCH bfd_arch_or1k
2825#define ELF_MACHINE_CODE EM_OR1K
2826#define ELF_TARGET_ID OR1K_ELF_DATA
2827#define ELF_MAXPAGESIZE 0x2000
2828
6d00b590 2829#define TARGET_BIG_SYM or1k_elf32_vec
73589c9d
CS		 2830#define TARGET_BIG_NAME "elf32-or1k"
2831
2832#define elf_info_to_howto_rel NULL
2833#define elf_info_to_howto or1k_info_to_howto_rela
2834#define elf_backend_relocate_section or1k_elf_relocate_section
2835#define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2836#define elf_backend_gc_sweep_hook or1k_elf_gc_sweep_hook
2837#define elf_backend_check_relocs or1k_elf_check_relocs
2838#define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2839#define elf_backend_can_gc_sections 1
2840#define elf_backend_rela_normal 1
2841
2842#define bfd_elf32_mkobject elf_or1k_mkobject
2843
2844#define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2845#define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2846#define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2847#define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2848
2849#define elf_backend_object_p or1k_elf_object_p
2850#define elf_backend_final_write_processing or1k_elf_final_write_processing
2851#define elf_backend_can_refcount 1
2852
2853#define elf_backend_plt_readonly 1
2854#define elf_backend_want_got_plt 1
2855#define elf_backend_want_plt_sym 0
2856#define elf_backend_got_header_size 12
2857#define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2858#define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2859#define elf_backend_create_dynamic_sections or1k_elf_create_dynamic_sections
2860#define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2861#define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2862#define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2863#define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2864
2865#include "elf32-target.h"
GDB Binutils - Deliverables
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