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Fix RELOC_FOR_GLOBAL_SYMBOLS macro so that it can cope with user defined symbols...
[binutils-gdb.git] / bfd / elfxx-tilegx.c
blobc829792b25349a5ed513a7f4720bbc74b64922e9
1 /* TILE-Gx-specific support for ELF.
2 Copyright (C) 2011-2024 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/tilegx.h"
26 #include "opcode/tilegx.h"
27 #include "libiberty.h"
28 #include "elfxx-tilegx.h"
29
30 #define ABI_64_P(abfd) \
31 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
32
33 #define TILEGX_ELF_WORD_BYTES(htab) \
34 ((htab)->bytes_per_word)
35
36 /* The size of an external RELA relocation. */
37 #define TILEGX_ELF_RELA_BYTES(htab) \
38 ((htab)->bytes_per_rela)
39
40 /* Both 32-bit and 64-bit tilegx encode this in an identical manner,
41 so just take advantage of that. */
42 #define TILEGX_ELF_R_TYPE(r_info) \
43 ((r_info) & 0xFF)
44
45 #define TILEGX_ELF_R_INFO(htab, in_rel, index, type) \
46 ((htab)->r_info (in_rel, index, type))
47
48 #define TILEGX_ELF_R_SYMNDX(htab, r_info) \
49 ((htab)->r_symndx(r_info))
50
51 #define TILEGX_ELF_DTPOFF_RELOC(htab) \
52 ((htab)->dtpoff_reloc)
53
54 #define TILEGX_ELF_DTPMOD_RELOC(htab) \
55 ((htab)->dtpmod_reloc)
56
57 #define TILEGX_ELF_TPOFF_RELOC(htab) \
58 ((htab)->tpoff_reloc)
59
60 #define TILEGX_ELF_PUT_WORD(htab, bfd, val, ptr) \
61 ((htab)->put_word (bfd, val, ptr))
62
63 /* The name of the dynamic interpreter. This is put in the .interp
64 section. */
65
66 #define ELF64_DYNAMIC_INTERPRETER "/lib/ld.so.1"
67 #define ELF32_DYNAMIC_INTERPRETER "/lib32/ld.so.1"
68
69
70 static reloc_howto_type tilegx_elf_howto_table [] =
71 {
72 /* This reloc does nothing. */
73 HOWTO (R_TILEGX_NONE, /* type */
74 0, /* rightshift */
75 0, /* size */
76 0, /* bitsize */
77 false, /* pc_relative */
78 0, /* bitpos */
79 complain_overflow_dont, /* complain_on_overflow */
80 bfd_elf_generic_reloc, /* special_function */
81 "R_TILEGX_NONE", /* name */
82 false, /* partial_inplace */
83 0, /* src_mask */
84 0, /* dst_mask */
85 false), /* pcrel_offset */
86 #ifdef BFD64
87 /* A 64 bit absolute relocation. */
88 HOWTO (R_TILEGX_64, /* type */
89 0, /* rightshift */
90 8, /* size */
91 64, /* bitsize */
92 false, /* pc_relative */
93 0, /* bitpos */
94 complain_overflow_dont, /* complain_on_overflow */
95 bfd_elf_generic_reloc, /* special_function */
96 "R_TILEGX_64", /* name */
97 false, /* partial_inplace */
98 0, /* src_mask */
99 0xffffffffffffffffULL, /* dst_mask */
100 false), /* pcrel_offset */
101 #endif
102 /* A 32 bit absolute relocation. */
103 HOWTO (R_TILEGX_32, /* type */
104 0, /* rightshift */
105 4, /* size */
106 32, /* bitsize */
107 false, /* pc_relative */
108 0, /* bitpos */
109 complain_overflow_dont, /* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_TILEGX_32", /* name */
112 false, /* partial_inplace */
113 0, /* src_mask */
114 0xffffffff, /* dst_mask */
115 false), /* pcrel_offset */
116
117 /* A 16 bit absolute relocation. */
118 HOWTO (R_TILEGX_16, /* type */
119 0, /* rightshift */
120 2, /* size */
121 16, /* bitsize */
122 false, /* pc_relative */
123 0, /* bitpos */
124 complain_overflow_bitfield, /* complain_on_overflow */
125 bfd_elf_generic_reloc, /* special_function */
126 "R_TILEGX_16", /* name */
127 false, /* partial_inplace */
128 0, /* src_mask */
129 0xffff, /* dst_mask */
130 false), /* pcrel_offset */
131
132 /* An 8 bit absolute relocation. */
133 HOWTO (R_TILEGX_8, /* type */
134 0, /* rightshift */
135 1, /* size */
136 8, /* bitsize */
137 false, /* pc_relative */
138 0, /* bitpos */
139 complain_overflow_unsigned, /* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_TILEGX_8", /* name */
142 false, /* partial_inplace */
143 0, /* src_mask */
144 0xff, /* dst_mask */
145 false), /* pcrel_offset */
146 #ifdef BFD64
147 /* A 64 bit pc-relative relocation. */
148 HOWTO (R_TILEGX_64_PCREL,/* type */
149 0, /* rightshift */
150 8, /* size */
151 64, /* bitsize */
152 true, /* pc_relative */
153 0, /* bitpos */
154 complain_overflow_dont, /* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_TILEGX_32_PCREL", /* name */
157 false, /* partial_inplace */
158 0, /* src_mask */
159 0xffffffffffffffffULL, /* dst_mask */
160 true), /* pcrel_offset */
161 #endif
162 /* A 32 bit pc-relative relocation. */
163 HOWTO (R_TILEGX_32_PCREL,/* type */
164 0, /* rightshift */
165 4, /* size */
166 32, /* bitsize */
167 true, /* pc_relative */
168 0, /* bitpos */
169 complain_overflow_dont, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_TILEGX_32_PCREL", /* name */
172 false, /* partial_inplace */
173 0, /* src_mask */
174 0xffffffff, /* dst_mask */
175 true), /* pcrel_offset */
176
177 /* A 16 bit pc-relative relocation. */
178 HOWTO (R_TILEGX_16_PCREL,/* type */
179 0, /* rightshift */
180 2, /* size */
181 16, /* bitsize */
182 true, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_signed, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_TILEGX_16_PCREL", /* name */
187 false, /* partial_inplace */
188 0, /* src_mask */
189 0xffff, /* dst_mask */
190 true), /* pcrel_offset */
191
192 /* An 8 bit pc-relative relocation. */
193 HOWTO (R_TILEGX_8_PCREL, /* type */
194 0, /* rightshift */
195 1, /* size */
196 8, /* bitsize */
197 true, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_signed, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_TILEGX_8_PCREL",/* name */
202 false, /* partial_inplace */
203 0, /* src_mask */
204 0xff, /* dst_mask */
205 true), /* pcrel_offset */
206
207 /* A 16 bit relocation without overflow. */
208 HOWTO (R_TILEGX_HW0, /* type */
209 0, /* rightshift */
210 2, /* size */
211 16, /* bitsize */
212 false, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_dont,/* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_TILEGX_HW0", /* name */
217 false, /* partial_inplace */
218 0, /* src_mask */
219 0xffff, /* dst_mask */
220 false), /* pcrel_offset */
221
222 /* A 16 bit relocation without overflow. */
223 HOWTO (R_TILEGX_HW1, /* type */
224 16, /* rightshift */
225 2, /* size */
226 16, /* bitsize */
227 false, /* pc_relative */
228 0, /* bitpos */
229 complain_overflow_dont,/* complain_on_overflow */
230 bfd_elf_generic_reloc, /* special_function */
231 "R_TILEGX_HW1", /* name */
232 false, /* partial_inplace */
233 0, /* src_mask */
234 0xffff, /* dst_mask */
235 false), /* pcrel_offset */
236
237 /* A 16 bit relocation without overflow. */
238 HOWTO (R_TILEGX_HW2, /* type */
239 32, /* rightshift */
240 2, /* size */
241 16, /* bitsize */
242 false, /* pc_relative */
243 0, /* bitpos */
244 complain_overflow_dont,/* complain_on_overflow */
245 bfd_elf_generic_reloc, /* special_function */
246 "R_TILEGX_HW2", /* name */
247 false, /* partial_inplace */
248 0, /* src_mask */
249 0xffff, /* dst_mask */
250 false), /* pcrel_offset */
251
252 /* A 16 bit relocation without overflow. */
253 HOWTO (R_TILEGX_HW3, /* type */
254 48, /* rightshift */
255 2, /* size */
256 16, /* bitsize */
257 false, /* pc_relative */
258 0, /* bitpos */
259 complain_overflow_dont,/* complain_on_overflow */
260 bfd_elf_generic_reloc, /* special_function */
261 "R_TILEGX_HW3", /* name */
262 false, /* partial_inplace */
263 0, /* src_mask */
264 0xffff, /* dst_mask */
265 false), /* pcrel_offset */
266
267 /* A 16 bit relocation with overflow. */
268 HOWTO (R_TILEGX_HW0_LAST, /* type */
269 0, /* rightshift */
270 2, /* size */
271 16, /* bitsize */
272 false, /* pc_relative */
273 0, /* bitpos */
274 complain_overflow_signed,/* complain_on_overflow */
275 bfd_elf_generic_reloc, /* special_function */
276 "R_TILEGX_HW0_LAST", /* name */
277 false, /* partial_inplace */
278 0, /* src_mask */
279 0xffff, /* dst_mask */
280 false), /* pcrel_offset */
281
282 /* A 16 bit relocation with overflow. */
283 HOWTO (R_TILEGX_HW1_LAST, /* type */
284 16, /* rightshift */
285 2, /* size */
286 16, /* bitsize */
287 false, /* pc_relative */
288 0, /* bitpos */
289 complain_overflow_signed,/* complain_on_overflow */
290 bfd_elf_generic_reloc, /* special_function */
291 "R_TILEGX_HW1_LAST", /* name */
292 false, /* partial_inplace */
293 0, /* src_mask */
294 0xffff, /* dst_mask */
295 false), /* pcrel_offset */
296
297 /* A 16 bit relocation with overflow. */
298 HOWTO (R_TILEGX_HW2_LAST, /* type */
299 32, /* rightshift */
300 2, /* size */
301 16, /* bitsize */
302 false, /* pc_relative */
303 0, /* bitpos */
304 complain_overflow_signed,/* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_TILEGX_HW2_LAST", /* name */
307 false, /* partial_inplace */
308 0, /* src_mask */
309 0xffff, /* dst_mask */
310 false), /* pcrel_offset */
311
312 HOWTO (R_TILEGX_COPY, /* type */
313 0, /* rightshift */
314 0, /* size */
315 0, /* bitsize */
316 false, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_dont, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_TILEGX_COPY", /* name */
321 false, /* partial_inplace */
322 0, /* src_mask */
323 0, /* dst_mask */
324 true), /* pcrel_offset */
325
326 HOWTO (R_TILEGX_GLOB_DAT, /* type */
327 0, /* rightshift */
328 0, /* size */
329 0, /* bitsize */
330 false, /* pc_relative */
331 0, /* bitpos */
332 complain_overflow_dont, /* complain_on_overflow */
333 bfd_elf_generic_reloc, /* special_function */
334 "R_TILEGX_GLOB_DAT", /* name */
335 false, /* partial_inplace */
336 0, /* src_mask */
337 0, /* dst_mask */
338 true), /* pcrel_offset */
339
340 HOWTO (R_TILEGX_JMP_SLOT, /* type */
341 0, /* rightshift */
342 0, /* size */
343 0, /* bitsize */
344 false, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_dont, /* complain_on_overflow */
347 bfd_elf_generic_reloc, /* special_function */
348 "R_TILEGX_JMP_SLOT", /* name */
349 false, /* partial_inplace */
350 0, /* src_mask */
351 0, /* dst_mask */
352 true), /* pcrel_offset */
353
354 HOWTO (R_TILEGX_RELATIVE, /* type */
355 0, /* rightshift */
356 0, /* size */
357 0, /* bitsize */
358 false, /* pc_relative */
359 0, /* bitpos */
360 complain_overflow_dont, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_TILEGX_RELATIVE", /* name */
363 false, /* partial_inplace */
364 0, /* src_mask */
365 0, /* dst_mask */
366 true), /* pcrel_offset */
367
368 HOWTO (R_TILEGX_BROFF_X1, /* type */
369 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
370 4, /* size */
371 17, /* bitsize */
372 true, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_TILEGX_BROFF_X1", /* name */
377 false, /* partial_inplace */
378 0, /* src_mask */
379 -1, /* dst_mask */
380 true), /* pcrel_offset */
381
382 HOWTO (R_TILEGX_JUMPOFF_X1, /* type */
383 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
384 4, /* size */
385 27, /* bitsize */
386 true, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_signed,/* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_TILEGX_JUMPOFF_X1", /* name */
391 false, /* partial_inplace */
392 0, /* src_mask */
393 -1, /* dst_mask */
394 true), /* pcrel_offset */
395
396 HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */
397 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
398 4, /* size */
399 27, /* bitsize */
400 true, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_signed,/* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_TILEGX_JUMPOFF_X1_PLT", /* name */
405 false, /* partial_inplace */
406 0, /* src_mask */
407 -1, /* dst_mask */
408 true), /* pcrel_offset */
409
410 #define TILEGX_IMM_HOWTO(name, size, bitsize) \
411 HOWTO (name, 0, size, bitsize, false, 0, \
412 complain_overflow_signed, bfd_elf_generic_reloc, \
413 #name, false, 0, -1, false)
414
415 #define TILEGX_UIMM_HOWTO(name, size, bitsize) \
416 HOWTO (name, 0, size, bitsize, false, 0, \
417 complain_overflow_unsigned, bfd_elf_generic_reloc, \
418 #name, false, 0, -1, false)
419
420 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 1, 8),
421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 1, 8),
422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 1, 8),
423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 1, 8),
424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 1, 8),
425
426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 2, 14),
427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 2, 14),
428
429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 1, 6),
430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 1, 6),
431
432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 1, 6),
433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 1, 6),
434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 1, 6),
435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 1, 6),
436
437 #define TILEGX_IMM16_HOWTO(name, rshift) \
438 HOWTO (name, rshift, 2, 16, false, 0, \
439 complain_overflow_dont, bfd_elf_generic_reloc, \
440 #name, false, 0, 0xffff, false)
441
442 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0),
443 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0),
444 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16),
445 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16),
446 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32),
447 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32),
448 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48),
449 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48),
450
451 #define TILEGX_IMM16_HOWTO_LAST(name, rshift) \
452 HOWTO (name, rshift, 2, 16, false, 0, \
453 complain_overflow_signed, bfd_elf_generic_reloc, \
454 #name, false, 0, 0xffff, false)
455
456 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0),
457 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0),
458 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16),
459 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16),
460 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32),
461 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32),
462
463 /* PC-relative offsets. */
464
465 #define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \
466 HOWTO (name, rshift, 2, 16, true, 0, \
467 complain_overflow_dont, bfd_elf_generic_reloc, \
468 #name, false, 0, 0xffff, true)
469
470 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0),
471 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0),
472 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16),
473 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16),
474 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32),
475 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32),
476 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48),
477 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48),
478
479 #define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \
480 HOWTO (name, rshift, 2, 16, true, 0, \
481 complain_overflow_signed, bfd_elf_generic_reloc, \
482 #name, false, 0, 0xffff, true)
483
484 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0),
485 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0),
486 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16),
487 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16),
488 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32),
489 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32),
490
491 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0),
492 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0),
493
494 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PLT_PCREL, 0),
495 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PLT_PCREL, 0),
496 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PLT_PCREL, 16),
497 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PLT_PCREL, 16),
498 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PLT_PCREL, 32),
499 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PLT_PCREL, 32),
500
501 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_GOT, 0),
502 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_GOT, 0),
503 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_GOT, 16),
504 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_GOT, 16),
505
506 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PLT_PCREL, 48),
507 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PLT_PCREL, 48),
508
509 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_GD, 0),
510 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_GD, 0),
511
512 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_LE, 0),
513 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_LE, 0),
514 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE, 0),
515 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE, 0),
516 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE, 16),
517 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE, 16),
518
519 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD, 0),
520 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD, 0),
521 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD, 16),
522 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD, 16),
523 EMPTY_HOWTO (90),
524 EMPTY_HOWTO (91),
525
526 #define TILEGX_IMM16_HOWTO_TLS_IE(name, rshift) \
527 HOWTO (name, rshift, 2, 16, false, 0, \
528 complain_overflow_dont, bfd_elf_generic_reloc, \
529 #name, false, 0, 0xffff, true)
530
531 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X0_HW0_TLS_IE, 0),
532 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X1_HW0_TLS_IE, 0),
533
534 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL, 0),
535 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL, 0),
536 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL, 16),
537 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL, 16),
538 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL, 32),
539 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL, 32),
540
541 #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \
542 HOWTO (name, rshift, 2, 16, false, 0, \
543 complain_overflow_signed, bfd_elf_generic_reloc, \
544 #name, false, 0, 0xffff, true)
545
546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0),
547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0),
548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16),
549 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16),
550 EMPTY_HOWTO (104),
551 EMPTY_HOWTO (105),
552
553 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, false, 0, complain_overflow_dont,
554 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64",
555 false, 0, 0, true),
556 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 8, 64, false, 0, complain_overflow_bitfield,
557 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64",
558 false, 0, -1, true),
559 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, false, 0, complain_overflow_dont,
560 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64",
561 false, 0, 0, true),
562
563 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, false, 0, complain_overflow_dont,
564 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32",
565 false, 0, 0, true),
566 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 8, 32, false, 0, complain_overflow_bitfield,
567 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32",
568 false, 0, -1, true),
569 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, false, 0, complain_overflow_dont,
570 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32",
571 false, 0, 0, true),
572
573 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */
574 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
575 4, /* size */
576 27, /* bitsize */
577 true, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_signed,/* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_TILEGX_TLS_GD_CALL", /* name */
582 false, /* partial_inplace */
583 0, /* src_mask */
584 -1, /* dst_mask */
585 true), /* pcrel_offset */
586
587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 1, 8),
588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 1, 8),
589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 1, 8),
590 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 1, 8),
591 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 1, 8),
592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 1, 8),
593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 1, 8),
594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 1, 8),
595 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 1, 8),
596 };
597
598 static reloc_howto_type tilegx_elf_howto_table2 [] =
599 {
600 /* GNU extension to record C++ vtable hierarchy */
601 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */
602 0, /* rightshift */
603 8, /* size */
604 0, /* bitsize */
605 false, /* pc_relative */
606 0, /* bitpos */
607 complain_overflow_dont, /* complain_on_overflow */
608 NULL, /* special_function */
609 "R_TILEGX_GNU_VTINHERIT", /* name */
610 false, /* partial_inplace */
611 0, /* src_mask */
612 0, /* dst_mask */
613 false), /* pcrel_offset */
614
615 /* GNU extension to record C++ vtable member usage */
616 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */
617 0, /* rightshift */
618 8, /* size */
619 0, /* bitsize */
620 false, /* pc_relative */
621 0, /* bitpos */
622 complain_overflow_dont, /* complain_on_overflow */
623 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
624 "R_TILEGX_GNU_VTENTRY", /* name */
625 false, /* partial_inplace */
626 0, /* src_mask */
627 0, /* dst_mask */
628 false), /* pcrel_offset */
629
630 };
631 \f
632 /* Map BFD reloc types to TILEGX ELF reloc types. */
633
634 typedef struct tilegx_reloc_map
635 {
636 bfd_reloc_code_real_type bfd_reloc_val;
637 unsigned int tilegx_reloc_val;
638 reloc_howto_type * table;
639 } reloc_map;
640
641 static const reloc_map tilegx_reloc_map [] =
642 {
643 #define TH_REMAP(bfd, tilegx) \
644 { bfd, tilegx, tilegx_elf_howto_table },
645
646 /* Standard relocations. */
647 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE)
648 TH_REMAP (BFD_RELOC_64, R_TILEGX_64)
649 TH_REMAP (BFD_RELOC_32, R_TILEGX_32)
650 TH_REMAP (BFD_RELOC_16, R_TILEGX_16)
651 TH_REMAP (BFD_RELOC_8, R_TILEGX_8)
652 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL)
653 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL)
654 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL)
655 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL)
656
657 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t)
658
659 /* Custom relocations. */
660 SIMPLE_REMAP (TILEGX_HW0)
661 SIMPLE_REMAP (TILEGX_HW1)
662 SIMPLE_REMAP (TILEGX_HW2)
663 SIMPLE_REMAP (TILEGX_HW3)
664 SIMPLE_REMAP (TILEGX_HW0_LAST)
665 SIMPLE_REMAP (TILEGX_HW1_LAST)
666 SIMPLE_REMAP (TILEGX_HW2_LAST)
667 SIMPLE_REMAP (TILEGX_COPY)
668 SIMPLE_REMAP (TILEGX_GLOB_DAT)
669 SIMPLE_REMAP (TILEGX_JMP_SLOT)
670 SIMPLE_REMAP (TILEGX_RELATIVE)
671 SIMPLE_REMAP (TILEGX_BROFF_X1)
672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1)
673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT)
674 SIMPLE_REMAP (TILEGX_IMM8_X0)
675 SIMPLE_REMAP (TILEGX_IMM8_Y0)
676 SIMPLE_REMAP (TILEGX_IMM8_X1)
677 SIMPLE_REMAP (TILEGX_IMM8_Y1)
678 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1)
679 SIMPLE_REMAP (TILEGX_MT_IMM14_X1)
680 SIMPLE_REMAP (TILEGX_MF_IMM14_X1)
681 SIMPLE_REMAP (TILEGX_MMSTART_X0)
682 SIMPLE_REMAP (TILEGX_MMEND_X0)
683 SIMPLE_REMAP (TILEGX_SHAMT_X0)
684 SIMPLE_REMAP (TILEGX_SHAMT_X1)
685 SIMPLE_REMAP (TILEGX_SHAMT_Y0)
686 SIMPLE_REMAP (TILEGX_SHAMT_Y1)
687 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0)
688 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0)
689 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1)
690 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1)
691 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2)
692 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2)
693 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3)
694 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3)
695 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST)
696 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST)
697 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST)
698 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST)
699 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST)
700 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST)
701 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL)
702 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL)
703 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL)
704 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL)
705 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL)
706 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL)
707 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL)
708 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL)
709 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL)
710 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL)
711 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL)
712 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL)
713 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL)
714 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL)
715 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT)
716 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT)
717 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL)
718 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL)
719 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL)
720 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL)
721 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL)
722 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL)
723 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT)
724 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT)
725 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT)
726 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT)
727 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL)
728 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL)
729 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD)
730 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD)
731 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE)
732 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE)
733 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE)
734 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE)
735 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE)
736 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
737 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD)
738 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD)
739 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD)
740 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD)
741 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE)
742 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE)
743 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL)
744 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL)
745 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL)
746 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL)
747 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL)
748 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL)
749 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE)
750 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE)
751 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE)
752 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE)
753
754 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64)
755 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64)
756 SIMPLE_REMAP (TILEGX_TLS_TPOFF64)
757
758 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32)
759 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32)
760 SIMPLE_REMAP (TILEGX_TLS_TPOFF32)
761
762 SIMPLE_REMAP (TILEGX_TLS_GD_CALL)
763 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD)
764 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD)
765 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD)
766 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD)
767 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD)
768 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD)
769 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD)
770 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD)
771 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD)
772
773 #undef SIMPLE_REMAP
774 #undef TH_REMAP
775
776 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 },
777 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 },
778 };
779
780
781
782 /* TILEGX ELF linker hash entry. */
783
784 struct tilegx_elf_link_hash_entry
785 {
786 struct elf_link_hash_entry elf;
787
788 #define GOT_UNKNOWN 0
789 #define GOT_NORMAL 1
790 #define GOT_TLS_GD 2
791 #define GOT_TLS_IE 4
792 unsigned char tls_type;
793 };
794
795 #define tilegx_elf_hash_entry(ent) \
796 ((struct tilegx_elf_link_hash_entry *)(ent))
797
798 struct _bfd_tilegx_elf_obj_tdata
799 {
800 struct elf_obj_tdata root;
801
802 /* tls_type for each local got entry. */
803 char *local_got_tls_type;
804 };
805
806 #define _bfd_tilegx_elf_tdata(abfd) \
807 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any)
808
809 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \
810 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type)
811
812 #define is_tilegx_elf(bfd) \
813 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
814 && elf_tdata (bfd) != NULL \
815 && elf_object_id (bfd) == TILEGX_ELF_DATA)
816
817 #include "elf/common.h"
818 #include "elf/internal.h"
819
820 struct tilegx_elf_link_hash_table
821 {
822 struct elf_link_hash_table elf;
823
824 int bytes_per_word;
825 int word_align_power;
826 int bytes_per_rela;
827 int dtpmod_reloc;
828 int dtpoff_reloc;
829 int tpoff_reloc;
830 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
831 bfd_vma (*r_symndx) (bfd_vma);
832 void (*put_word) (bfd *, bfd_vma, void *);
833 const char *dynamic_interpreter;
834
835 /* Whether LE transition has been disabled for some of the
836 sections. */
837 bool disable_le_transition;
838 };
839
840
841 /* Get the Tile ELF linker hash table from a link_info structure. */
842 #define tilegx_elf_hash_table(p) \
843 ((is_elf_hash_table ((p)->hash) \
844 && elf_hash_table_id (elf_hash_table (p)) == TILEGX_ELF_DATA) \
845 ? (struct tilegx_elf_link_hash_table *) (p)->hash : NULL)
846
847 #ifdef BFD64
848 static bfd_vma
849 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
850 bfd_vma rel_index,
851 bfd_vma type)
852 {
853 return ELF64_R_INFO (rel_index, type);
854 }
855
856 static bfd_vma
857 tilegx_elf_r_symndx_64 (bfd_vma r_info)
858 {
859 return ELF64_R_SYM (r_info);
860 }
861
862 static void
863 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
864 {
865 bfd_put_64 (abfd, val, ptr);
866 }
867 #endif /* BFD64 */
868
869 static bfd_vma
870 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
871 bfd_vma rel_index,
872 bfd_vma type)
873 {
874 return ELF32_R_INFO (rel_index, type);
875 }
876
877 static bfd_vma
878 tilegx_elf_r_symndx_32 (bfd_vma r_info)
879 {
880 return ELF32_R_SYM (r_info);
881 }
882
883 static void
884 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
885 {
886 bfd_put_32 (abfd, val, ptr);
887 }
888
889 reloc_howto_type *
890 tilegx_reloc_type_lookup (bfd * abfd,
891 bfd_reloc_code_real_type code)
892 {
893 unsigned int i;
894
895 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;)
896 {
897 const reloc_map * entry;
898
899 entry = tilegx_reloc_map + i;
900
901 if (entry->bfd_reloc_val == code)
902 return entry->table + (entry->tilegx_reloc_val
903 - entry->table[0].type);
904 }
905
906 /* xgettext:c-format */
907 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
908 abfd, (int) code);
909 bfd_set_error (bfd_error_bad_value);
910 return NULL;
911 }
912
913 reloc_howto_type *
914 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
915 const char *r_name)
916 {
917 unsigned int i;
918
919 for (i = 0;
920 i < (sizeof (tilegx_elf_howto_table)
921 / sizeof (tilegx_elf_howto_table[0]));
922 i++)
923 if (tilegx_elf_howto_table[i].name != NULL
924 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
925 return &tilegx_elf_howto_table[i];
926
927 return NULL;
928 }
929
930 bool
931 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
932 arelent *cache_ptr,
933 Elf_Internal_Rela *dst)
934 {
935 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
936
937 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
938 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
939 else if (r_type - R_TILEGX_GNU_VTINHERIT
940 <= ((unsigned int) R_TILEGX_GNU_VTENTRY
941 - (unsigned int) R_TILEGX_GNU_VTINHERIT))
942 cache_ptr->howto
943 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
944 else
945 {
946 /* xgettext:c-format */
947 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
948 abfd, r_type);
949 bfd_set_error (bfd_error_bad_value);
950 return false;
951 }
952 return true;
953 }
954
955 typedef tilegx_bundle_bits (*tilegx_create_func)(int);
956
957 static const tilegx_create_func reloc_to_create_func[] =
958 {
959 /* The first twenty relocation types don't correspond to operands */
960 NULL,
961 NULL,
962 NULL,
963 NULL,
964 NULL,
965 NULL,
966 NULL,
967 NULL,
968 NULL,
969 NULL,
970 NULL,
971 NULL,
972 NULL,
973 NULL,
974 NULL,
975 NULL,
976 NULL,
977 NULL,
978 NULL,
979 NULL,
980
981 /* The remaining relocations are used for immediate operands */
982 create_BrOff_X1,
983 create_JumpOff_X1,
984 create_JumpOff_X1,
985 create_Imm8_X0,
986 create_Imm8_Y0,
987 create_Imm8_X1,
988 create_Imm8_Y1,
989 create_Dest_Imm8_X1,
990 create_MT_Imm14_X1,
991 create_MF_Imm14_X1,
992 create_BFStart_X0,
993 create_BFEnd_X0,
994 create_ShAmt_X0,
995 create_ShAmt_X1,
996 create_ShAmt_Y0,
997 create_ShAmt_Y1,
998 create_Imm16_X0,
999 create_Imm16_X1,
1000 create_Imm16_X0,
1001 create_Imm16_X1,
1002 create_Imm16_X0,
1003 create_Imm16_X1,
1004 create_Imm16_X0,
1005 create_Imm16_X1,
1006 create_Imm16_X0,
1007 create_Imm16_X1,
1008 create_Imm16_X0,
1009 create_Imm16_X1,
1010 create_Imm16_X0,
1011 create_Imm16_X1,
1012 create_Imm16_X0,
1013 create_Imm16_X1,
1014 create_Imm16_X0,
1015 create_Imm16_X1,
1016 create_Imm16_X0,
1017 create_Imm16_X1,
1018 create_Imm16_X0,
1019 create_Imm16_X1,
1020 create_Imm16_X0,
1021 create_Imm16_X1,
1022 create_Imm16_X0,
1023 create_Imm16_X1,
1024 create_Imm16_X0,
1025 create_Imm16_X1,
1026 create_Imm16_X0,
1027 create_Imm16_X1,
1028 create_Imm16_X0,
1029 create_Imm16_X1,
1030 create_Imm16_X0,
1031 create_Imm16_X1,
1032 create_Imm16_X0,
1033 create_Imm16_X1,
1034 create_Imm16_X0,
1035 create_Imm16_X1,
1036 create_Imm16_X0,
1037 create_Imm16_X1,
1038 create_Imm16_X0,
1039 create_Imm16_X1,
1040 create_Imm16_X0,
1041 create_Imm16_X1,
1042 create_Imm16_X0,
1043 create_Imm16_X1,
1044 create_Imm16_X0,
1045 create_Imm16_X1,
1046 create_Imm16_X0,
1047 create_Imm16_X1,
1048 create_Imm16_X0,
1049 create_Imm16_X1,
1050 create_Imm16_X0,
1051 create_Imm16_X1,
1052 NULL,
1053 NULL,
1054 create_Imm16_X0,
1055 create_Imm16_X1,
1056 create_Imm16_X0,
1057 create_Imm16_X1,
1058 create_Imm16_X0,
1059 create_Imm16_X1,
1060 create_Imm16_X0,
1061 create_Imm16_X1,
1062 create_Imm16_X0,
1063 create_Imm16_X1,
1064 create_Imm16_X0,
1065 create_Imm16_X1,
1066 };
1067
1068 static void
1069 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
1070 {
1071 const struct elf_backend_data *bed;
1072 bfd_byte *loc;
1073
1074 bed = get_elf_backend_data (abfd);
1075 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
1076 bed->s->swap_reloca_out (abfd, rel, loc);
1077 }
1078
1079 /* PLT/GOT stuff */
1080
1081 /* The procedure linkage table starts with the following header:
1082
1083 ld_add r28, r27, 8
1084 ld r27, r27
1085 {
1086 jr r27
1087 info 10 ## SP not offset, return PC in LR
1088 }
1089
1090 Subsequent entries are the following, jumping to the header at the end:
1091
1092 {
1093 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET>
1094 lnk r26
1095 }
1096 1:
1097 {
1098 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1099 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1100 }
1101 {
1102 add r28, r26, r28
1103 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1104 }
1105 {
1106 add r27, r26, r27
1107 ld r28, r28
1108 info 10 ## SP not offset, return PC in LR
1109 }
1110 {
1111 shl16insli r29, zero, MY_PLT_INDEX
1112 jr r28
1113 }
1114
1115 This code sequence lets the code at at the start of the PLT determine
1116 which PLT entry was executed by examining 'r29'.
1117
1118 Note that MY_PLT_INDEX skips over the header entries, so the first
1119 actual jump table entry has index zero.
1120
1121 If the offset fits in 16 bits,
1122
1123 lnk r26
1124 1:
1125 {
1126 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1127 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1128 }
1129 {
1130 shl16insli r29, zero, MY_PLT_INDEX
1131 ld r28, r28
1132 }
1133 {
1134 add r27, r26, r27
1135 jr r28
1136 }
1137 info 10 ## SP not offset, return PC in LR
1138
1139 For the purpose of backtracing, the procedure linkage table ends with the
1140 following tail entry:
1141
1142 info 10 ## SP not offset, return PC in LR
1143
1144 The 32-bit versions are similar, with ld4s replacing ld, and offsets into
1145 the GOT being multiples of 4 instead of 8.
1146
1147 */
1148
1149 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1150 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1151 #define PLT_TAIL_SIZE_IN_BUNDLES 1
1152
1153 #define PLT_HEADER_SIZE \
1154 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1155 #define PLT_ENTRY_SIZE \
1156 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1157 #define PLT_TAIL_SIZE \
1158 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1159
1160 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab)
1161
1162 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab))
1163
1164 static const bfd_byte
1165 tilegx64_plt0_entry[PLT_HEADER_SIZE] =
1166 {
1167 0x00, 0x30, 0x48, 0x51,
1168 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */
1169 0x00, 0x30, 0xbc, 0x35,
1170 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */
1171 0xff, 0xaf, 0x30, 0x40,
1172 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1173 };
1174
1175 static const bfd_byte
1176 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] =
1177 {
1178 0xdc, 0x0f, 0x00, 0x10,
1179 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1180 0xdb, 0x0f, 0x00, 0x10,
1181 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1182 0x9c, 0xc6, 0x0d, 0xd0,
1183 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1184 0x9b, 0xb6, 0xc5, 0xad,
1185 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1186 0xdd, 0x0f, 0x00, 0x70,
1187 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1188 };
1189
1190 static const bfd_byte
1191 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] =
1192 {
1193 0x00, 0x30, 0x48, 0x51,
1194 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1195 0x9c, 0x06, 0x00, 0x90,
1196 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1197 0xdd, 0x0f, 0x00, 0x70,
1198 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */
1199 0x9b, 0xb6, 0x0d, 0x50,
1200 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1201 0x00, 0x30, 0x48, 0xd1,
1202 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1203 };
1204
1205 /* Reuse an existing info 10 bundle. */
1206 static const bfd_byte *const tilegx64_plt_tail_entry =
1207 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1208
1209 static const bfd_byte
1210 tilegx32_plt0_entry[PLT_HEADER_SIZE] =
1211 {
1212 0x00, 0x30, 0x48, 0x51,
1213 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */
1214 0x00, 0x30, 0xbc, 0x35,
1215 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */
1216 0xff, 0xaf, 0x30, 0x40,
1217 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1218 };
1219
1220 static const bfd_byte
1221 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] =
1222 {
1223 0xdc, 0x0f, 0x00, 0x10,
1224 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1225 0xdb, 0x0f, 0x00, 0x10,
1226 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1227 0x9c, 0xc6, 0x0d, 0xd0,
1228 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1229 0x9b, 0xb6, 0xc5, 0xad,
1230 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */
1231 0xdd, 0x0f, 0x00, 0x70,
1232 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1233 };
1234
1235 static const bfd_byte
1236 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] =
1237 {
1238 0x00, 0x30, 0x48, 0x51,
1239 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1240 0x9c, 0x06, 0x00, 0x90,
1241 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1242 0xdd, 0x0f, 0x00, 0x70,
1243 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */
1244 0x9b, 0xb6, 0x0d, 0x50,
1245 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1246 0x00, 0x30, 0x48, 0xd1,
1247 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1248 };
1249
1250 /* Reuse an existing info 10 bundle. */
1251 static const bfd_byte *const tilegx32_plt_tail_entry =
1252 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1253
1254 static int
1255 tilegx_plt_entry_build (bfd *output_bfd,
1256 struct tilegx_elf_link_hash_table *htab,
1257 asection *splt, asection *sgotplt,
1258 bfd_vma offset, bfd_vma *r_offset)
1259 {
1260 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
1261 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab)
1262 + GOTPLT_HEADER_SIZE (htab));
1263 tilegx_bundle_bits *pc;
1264
1265 /* Compute the distance from the got entry to the lnk. */
1266 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1267 + sgotplt->output_offset
1268 + got_offset
1269 - splt->output_section->vma
1270 - splt->output_offset
1271 - offset
1272 - TILEGX_BUNDLE_SIZE_IN_BYTES;
1273
1274 /* Compute the distance to GOTPLT[0]. */
1275 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1276
1277 /* Check whether we can use the short plt entry with 16-bit offset. */
1278 bool short_plt_entry =
1279 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1280
1281 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *)
1282 (ABI_64_P (output_bfd) ?
1283 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) :
1284 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry));
1285
1286 /* Copy the plt entry template. */
1287 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE);
1288
1289 /* Write the immediate offsets. */
1290 pc = (tilegx_bundle_bits *)(splt->contents + offset);
1291
1292 if (short_plt_entry)
1293 {
1294 /* { lnk r28 } */
1295 pc++;
1296
1297 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */
1298 *pc++ |= create_Imm16_X0 (dist_got_entry)
1299 | create_Imm16_X1 (dist_got0);
1300
1301 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */
1302 *pc++ |= create_Imm16_X0 (plt_index);
1303 }
1304 else
1305 {
1306 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */
1307 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16);
1308
1309 /* { moveli r27, &GOTPLT[0] ;
1310 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */
1311 *pc++ |= create_Imm16_X0 (dist_got0 >> 16)
1312 | create_Imm16_X1 (dist_got_entry);
1313
1314 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */
1315 *pc++ |= create_Imm16_X1 (dist_got0);
1316
1317 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1318 pc++;
1319
1320 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */
1321 *pc++ |= create_Imm16_X0 (plt_index);
1322 }
1323
1324 /* Set the relocation offset. */
1325 *r_offset = got_offset;
1326
1327 return plt_index;
1328 }
1329
1330 /* Create an entry in an TILEGX ELF linker hash table. */
1331
1332 static struct bfd_hash_entry *
1333 link_hash_newfunc (struct bfd_hash_entry *entry,
1334 struct bfd_hash_table *table, const char *string)
1335 {
1336 /* Allocate the structure if it has not already been allocated by a
1337 subclass. */
1338 if (entry == NULL)
1339 {
1340 entry =
1341 bfd_hash_allocate (table,
1342 sizeof (struct tilegx_elf_link_hash_entry));
1343 if (entry == NULL)
1344 return entry;
1345 }
1346
1347 /* Call the allocation method of the superclass. */
1348 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1349 if (entry != NULL)
1350 {
1351 struct tilegx_elf_link_hash_entry *eh;
1352
1353 eh = (struct tilegx_elf_link_hash_entry *) entry;
1354 eh->tls_type = GOT_UNKNOWN;
1355 }
1356
1357 return entry;
1358 }
1359
1360 /* Create a TILEGX ELF linker hash table. */
1361
1362 struct bfd_link_hash_table *
1363 tilegx_elf_link_hash_table_create (bfd *abfd)
1364 {
1365 struct tilegx_elf_link_hash_table *ret;
1366 size_t amt = sizeof (struct tilegx_elf_link_hash_table);
1367
1368 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1369 if (ret == NULL)
1370 return NULL;
1371
1372 #ifdef BFD64
1373 if (ABI_64_P (abfd))
1374 {
1375 ret->bytes_per_word = 8;
1376 ret->word_align_power = 3;
1377 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1378 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1379 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1380 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1381 ret->r_info = tilegx_elf_r_info_64;
1382 ret->r_symndx = tilegx_elf_r_symndx_64;
1383 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1384 ret->put_word = tilegx_put_word_64;
1385 }
1386 else
1387 #endif
1388 {
1389 ret->bytes_per_word = 4;
1390 ret->word_align_power = 2;
1391 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1392 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1393 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1394 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1395 ret->r_info = tilegx_elf_r_info_32;
1396 ret->r_symndx = tilegx_elf_r_symndx_32;
1397 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1398 ret->put_word = tilegx_put_word_32;
1399 }
1400
1401 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1402 sizeof (struct tilegx_elf_link_hash_entry),
1403 TILEGX_ELF_DATA))
1404 {
1405 free (ret);
1406 return NULL;
1407 }
1408
1409 return &ret->elf.root;
1410 }
1411
1412 /* Create the .got section. */
1413
1414 static bool
1415 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1416 {
1417 flagword flags;
1418 asection *s, *s_got;
1419 struct elf_link_hash_entry *h;
1420 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1421 struct elf_link_hash_table *htab = elf_hash_table (info);
1422
1423 /* This function may be called more than once. */
1424 if (htab->sgot != NULL)
1425 return true;
1426
1427 flags = bed->dynamic_sec_flags;
1428
1429 s = bfd_make_section_anyway_with_flags (abfd,
1430 (bed->rela_plts_and_copies_p
1431 ? ".rela.got" : ".rel.got"),
1432 (bed->dynamic_sec_flags
1433 | SEC_READONLY));
1434 if (s == NULL
1435 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1436 return false;
1437 htab->srelgot = s;
1438
1439 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
1440 if (s == NULL
1441 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1442 return false;
1443 htab->sgot = s;
1444
1445 /* The first bit of the global offset table is the header. */
1446 s->size += bed->got_header_size;
1447
1448 if (bed->want_got_plt)
1449 {
1450 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
1451 if (s == NULL
1452 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1453 return false;
1454 htab->sgotplt = s;
1455
1456 /* Reserve room for the header. */
1457 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1458 }
1459
1460 if (bed->want_got_sym)
1461 {
1462 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1463 section. We don't do this in the linker script because we don't want
1464 to define the symbol if we are not creating a global offset
1465 table. */
1466 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1467 "_GLOBAL_OFFSET_TABLE_");
1468 elf_hash_table (info)->hgot = h;
1469 if (h == NULL)
1470 return false;
1471 }
1472
1473 return true;
1474 }
1475
1476 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1477 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1478 hash table. */
1479
1480 bool
1481 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1482 struct bfd_link_info *info)
1483 {
1484 if (!tilegx_elf_create_got_section (dynobj, info))
1485 return false;
1486
1487 return _bfd_elf_create_dynamic_sections (dynobj, info);
1488 }
1489
1490 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1491
1492 void
1493 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1494 struct elf_link_hash_entry *dir,
1495 struct elf_link_hash_entry *ind)
1496 {
1497 struct tilegx_elf_link_hash_entry *edir, *eind;
1498
1499 edir = (struct tilegx_elf_link_hash_entry *) dir;
1500 eind = (struct tilegx_elf_link_hash_entry *) ind;
1501
1502 if (ind->root.type == bfd_link_hash_indirect
1503 && dir->got.refcount <= 0)
1504 {
1505 edir->tls_type = eind->tls_type;
1506 eind->tls_type = GOT_UNKNOWN;
1507 }
1508 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1509 }
1510
1511 static int
1512 tilegx_tls_translate_to_le (int r_type)
1513 {
1514 switch (r_type)
1515 {
1516 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1517 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1518 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1519
1520 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1521 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1522 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1523
1524 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1525 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1526 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1527
1528 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1529 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1530 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1531
1532 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1533 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1534 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1535
1536 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1537 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1538 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1539 }
1540 return r_type;
1541 }
1542
1543 static int
1544 tilegx_tls_translate_to_ie (int r_type)
1545 {
1546 switch (r_type)
1547 {
1548 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1549 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1550 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1551
1552 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1553 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1554 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1555
1556 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1557 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1558 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1559
1560 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1561 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1562 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1563
1564 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1565 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1566 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1567
1568 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1569 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1570 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1571 }
1572 return r_type;
1573 }
1574
1575 static int
1576 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1577 int is_local, bool disable_le_transition)
1578 {
1579 if (!bfd_link_executable (info))
1580 return r_type;
1581
1582 if (is_local && !disable_le_transition)
1583 return tilegx_tls_translate_to_le (r_type);
1584 else
1585 return tilegx_tls_translate_to_ie (r_type);
1586 }
1587
1588 /* Look through the relocs for a section during the first phase, and
1589 allocate space in the global offset table or procedure linkage
1590 table. */
1591
1592 bool
1593 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1594 asection *sec, const Elf_Internal_Rela *relocs)
1595 {
1596 struct tilegx_elf_link_hash_table *htab;
1597 Elf_Internal_Shdr *symtab_hdr;
1598 struct elf_link_hash_entry **sym_hashes;
1599 const Elf_Internal_Rela *rel;
1600 const Elf_Internal_Rela *rel_end;
1601 asection *sreloc;
1602 int num_relocs;
1603 bool has_tls_gd_or_ie = false, has_tls_add = false;
1604
1605 if (bfd_link_relocatable (info))
1606 return true;
1607
1608 htab = tilegx_elf_hash_table (info);
1609 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1610 sym_hashes = elf_sym_hashes (abfd);
1611
1612 sreloc = NULL;
1613
1614 num_relocs = sec->reloc_count;
1615
1616 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1617
1618 if (htab->elf.dynobj == NULL)
1619 htab->elf.dynobj = abfd;
1620
1621 rel_end = relocs + num_relocs;
1622
1623 /* Check whether to do optimization to transform TLS GD/IE
1624 referehces to TLS LE. We disable it if we're linking with old
1625 TLS code sequences that do not support such optimization. Old
1626 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1627 no tls_add relocations. */
1628 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1629 {
1630 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1631 switch (r_type)
1632 {
1633 case R_TILEGX_TLS_GD_CALL:
1634 case R_TILEGX_TLS_IE_LOAD:
1635 has_tls_gd_or_ie = true;
1636 break;
1637 case R_TILEGX_IMM8_X0_TLS_ADD:
1638 case R_TILEGX_IMM8_Y0_TLS_ADD:
1639 case R_TILEGX_IMM8_X1_TLS_ADD:
1640 case R_TILEGX_IMM8_Y1_TLS_ADD:
1641 has_tls_add = true;
1642 break;
1643 }
1644 }
1645
1646 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1647 htab->disable_le_transition |= sec->sec_flg0;
1648
1649 for (rel = relocs; rel < rel_end; rel++)
1650 {
1651 unsigned int r_type;
1652 unsigned int r_symndx;
1653 struct elf_link_hash_entry *h;
1654 int tls_type;
1655
1656 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1657 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1658
1659 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1660 {
1661 /* xgettext:c-format */
1662 _bfd_error_handler (_("%pB: bad symbol index: %d"),
1663 abfd, r_symndx);
1664 return false;
1665 }
1666
1667 if (r_symndx < symtab_hdr->sh_info)
1668 h = NULL;
1669 else
1670 {
1671 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1672 while (h->root.type == bfd_link_hash_indirect
1673 || h->root.type == bfd_link_hash_warning)
1674 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1675 }
1676
1677 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1678 sec->sec_flg0);
1679 switch (r_type)
1680 {
1681 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1682 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1683 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1684 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1685 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1686 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1687 if (!bfd_link_executable (info))
1688 goto r_tilegx_plt32;
1689 break;
1690
1691 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1692 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1693 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1694 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1695 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1696 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1697 BFD_ASSERT (bfd_link_pic (info));
1698 tls_type = GOT_TLS_GD;
1699 goto have_got_reference;
1700
1701 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1702 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1703 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1704 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1705 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1706 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1707 tls_type = GOT_TLS_IE;
1708 if (!bfd_link_executable (info))
1709 info->flags |= DF_STATIC_TLS;
1710 goto have_got_reference;
1711
1712 case R_TILEGX_IMM16_X0_HW0_GOT:
1713 case R_TILEGX_IMM16_X1_HW0_GOT:
1714 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1715 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1716 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1717 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1718 tls_type = GOT_NORMAL;
1719 /* Fall Through */
1720
1721 have_got_reference:
1722 /* This symbol requires a global offset table entry. */
1723 {
1724 int old_tls_type;
1725
1726 if (h != NULL)
1727 {
1728 h->got.refcount += 1;
1729 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1730 }
1731 else
1732 {
1733 bfd_signed_vma *local_got_refcounts;
1734
1735 /* This is a global offset table entry for a local symbol. */
1736 local_got_refcounts = elf_local_got_refcounts (abfd);
1737 if (local_got_refcounts == NULL)
1738 {
1739 bfd_size_type size;
1740
1741 size = symtab_hdr->sh_info;
1742 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1743 local_got_refcounts = ((bfd_signed_vma *)
1744 bfd_zalloc (abfd, size));
1745 if (local_got_refcounts == NULL)
1746 return false;
1747 elf_local_got_refcounts (abfd) = local_got_refcounts;
1748 _bfd_tilegx_elf_local_got_tls_type (abfd)
1749 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1750 }
1751 local_got_refcounts[r_symndx] += 1;
1752 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1753 }
1754
1755 /* If a TLS symbol is accessed using IE at least once,
1756 there is no point to use dynamic model for it. */
1757 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1758 && (old_tls_type != GOT_TLS_GD
1759 || tls_type != GOT_TLS_IE))
1760 {
1761 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1762 tls_type = old_tls_type;
1763 else
1764 {
1765 _bfd_error_handler
1766 /* xgettext:c-format */
1767 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1768 abfd, h ? h->root.root.string : "<local>");
1769 return false;
1770 }
1771 }
1772
1773 if (old_tls_type != tls_type)
1774 {
1775 if (h != NULL)
1776 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1777 else
1778 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1779 }
1780 }
1781
1782 if (htab->elf.sgot == NULL)
1783 {
1784 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1785 return false;
1786 }
1787 break;
1788
1789 case R_TILEGX_TLS_GD_CALL:
1790 if (!bfd_link_executable (info))
1791 {
1792 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1793 against __tls_get_addr. */
1794 struct bfd_link_hash_entry *bh = NULL;
1795 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1796 "__tls_get_addr", 0,
1797 bfd_und_section_ptr, 0,
1798 NULL, false, false,
1799 &bh))
1800 return false;
1801 h = (struct elf_link_hash_entry *) bh;
1802 }
1803 else
1804 break;
1805 /* Fall through */
1806
1807 case R_TILEGX_JUMPOFF_X1_PLT:
1808 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
1809 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
1810 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
1811 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
1812 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
1813 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
1814 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
1815 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
1816 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
1817 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
1818 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
1819 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
1820 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
1821 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
1822 /* This symbol requires a procedure linkage table entry. We
1823 actually build the entry in adjust_dynamic_symbol,
1824 because this might be a case of linking PIC code without
1825 linking in any dynamic objects, in which case we don't
1826 need to generate a procedure linkage table after all. */
1827
1828 if (h != NULL)
1829 {
1830 h->needs_plt = 1;
1831 h->plt.refcount += 1;
1832 }
1833 break;
1834
1835 case R_TILEGX_64_PCREL:
1836 case R_TILEGX_32_PCREL:
1837 case R_TILEGX_16_PCREL:
1838 case R_TILEGX_8_PCREL:
1839 case R_TILEGX_IMM16_X0_HW0_PCREL:
1840 case R_TILEGX_IMM16_X1_HW0_PCREL:
1841 case R_TILEGX_IMM16_X0_HW1_PCREL:
1842 case R_TILEGX_IMM16_X1_HW1_PCREL:
1843 case R_TILEGX_IMM16_X0_HW2_PCREL:
1844 case R_TILEGX_IMM16_X1_HW2_PCREL:
1845 case R_TILEGX_IMM16_X0_HW3_PCREL:
1846 case R_TILEGX_IMM16_X1_HW3_PCREL:
1847 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1848 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1849 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1850 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1851 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1852 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1853 if (h != NULL)
1854 h->non_got_ref = 1;
1855
1856 if (h != NULL
1857 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1858 break;
1859 /* Fall through. */
1860
1861 case R_TILEGX_64:
1862 case R_TILEGX_32:
1863 case R_TILEGX_16:
1864 case R_TILEGX_8:
1865 case R_TILEGX_HW0:
1866 case R_TILEGX_HW1:
1867 case R_TILEGX_HW2:
1868 case R_TILEGX_HW3:
1869 case R_TILEGX_HW0_LAST:
1870 case R_TILEGX_HW1_LAST:
1871 case R_TILEGX_HW2_LAST:
1872 case R_TILEGX_COPY:
1873 case R_TILEGX_GLOB_DAT:
1874 case R_TILEGX_JMP_SLOT:
1875 case R_TILEGX_RELATIVE:
1876 case R_TILEGX_BROFF_X1:
1877 case R_TILEGX_JUMPOFF_X1:
1878 case R_TILEGX_IMM8_X0:
1879 case R_TILEGX_IMM8_Y0:
1880 case R_TILEGX_IMM8_X1:
1881 case R_TILEGX_IMM8_Y1:
1882 case R_TILEGX_DEST_IMM8_X1:
1883 case R_TILEGX_MT_IMM14_X1:
1884 case R_TILEGX_MF_IMM14_X1:
1885 case R_TILEGX_MMSTART_X0:
1886 case R_TILEGX_MMEND_X0:
1887 case R_TILEGX_SHAMT_X0:
1888 case R_TILEGX_SHAMT_X1:
1889 case R_TILEGX_SHAMT_Y0:
1890 case R_TILEGX_SHAMT_Y1:
1891 case R_TILEGX_IMM16_X0_HW0:
1892 case R_TILEGX_IMM16_X1_HW0:
1893 case R_TILEGX_IMM16_X0_HW1:
1894 case R_TILEGX_IMM16_X1_HW1:
1895 case R_TILEGX_IMM16_X0_HW2:
1896 case R_TILEGX_IMM16_X1_HW2:
1897 case R_TILEGX_IMM16_X0_HW3:
1898 case R_TILEGX_IMM16_X1_HW3:
1899 case R_TILEGX_IMM16_X0_HW0_LAST:
1900 case R_TILEGX_IMM16_X1_HW0_LAST:
1901 case R_TILEGX_IMM16_X0_HW1_LAST:
1902 case R_TILEGX_IMM16_X1_HW1_LAST:
1903 case R_TILEGX_IMM16_X0_HW2_LAST:
1904 case R_TILEGX_IMM16_X1_HW2_LAST:
1905 if (h != NULL)
1906 h->non_got_ref = 1;
1907
1908 r_tilegx_plt32:
1909 if (h != NULL && !bfd_link_pic (info))
1910 {
1911 /* We may need a .plt entry if the function this reloc
1912 refers to is in a shared lib. */
1913 h->plt.refcount += 1;
1914 }
1915
1916 /* If we are creating a shared library, and this is a reloc
1917 against a global symbol, or a non PC relative reloc
1918 against a local symbol, then we need to copy the reloc
1919 into the shared library. However, if we are linking with
1920 -Bsymbolic, we do not need to copy a reloc against a
1921 global symbol which is defined in an object we are
1922 including in the link (i.e., DEF_REGULAR is set). At
1923 this point we have not seen all the input files, so it is
1924 possible that DEF_REGULAR is not set now but will be set
1925 later (it is never cleared). In case of a weak definition,
1926 DEF_REGULAR may be cleared later by a strong definition in
1927 a shared library. We account for that possibility below by
1928 storing information in the relocs_copied field of the hash
1929 table entry. A similar situation occurs when creating
1930 shared libraries and symbol visibility changes render the
1931 symbol local.
1932
1933 If on the other hand, we are creating an executable, we
1934 may need to keep relocations for symbols satisfied by a
1935 dynamic library if we manage to avoid copy relocs for the
1936 symbol. */
1937 if ((bfd_link_pic (info)
1938 && (sec->flags & SEC_ALLOC) != 0
1939 && (! tilegx_elf_howto_table[r_type].pc_relative
1940 || (h != NULL
1941 && (! info->symbolic
1942 || h->root.type == bfd_link_hash_defweak
1943 || !h->def_regular))))
1944 || (!bfd_link_pic (info)
1945 && (sec->flags & SEC_ALLOC) != 0
1946 && h != NULL
1947 && (h->root.type == bfd_link_hash_defweak
1948 || !h->def_regular)))
1949 {
1950 struct elf_dyn_relocs *p;
1951 struct elf_dyn_relocs **head;
1952
1953 /* When creating a shared object, we must copy these
1954 relocs into the output file. We create a reloc
1955 section in dynobj and make room for the reloc. */
1956 if (sreloc == NULL)
1957 {
1958 sreloc = _bfd_elf_make_dynamic_reloc_section
1959 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
1960 /*rela?*/ true);
1961
1962 if (sreloc == NULL)
1963 return false;
1964 }
1965
1966 /* If this is a global symbol, we count the number of
1967 relocations we need for this symbol. */
1968 if (h != NULL)
1969 head = &h->dyn_relocs;
1970 else
1971 {
1972 /* Track dynamic relocs needed for local syms too.
1973 We really need local syms available to do this
1974 easily. Oh well. */
1975
1976 asection *s;
1977 void *vpp;
1978 Elf_Internal_Sym *isym;
1979
1980 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
1981 abfd, r_symndx);
1982 if (isym == NULL)
1983 return false;
1984
1985 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1986 if (s == NULL)
1987 s = sec;
1988
1989 vpp = &elf_section_data (s)->local_dynrel;
1990 head = (struct elf_dyn_relocs **) vpp;
1991 }
1992
1993 p = *head;
1994 if (p == NULL || p->sec != sec)
1995 {
1996 size_t amt = sizeof *p;
1997 p = ((struct elf_dyn_relocs *)
1998 bfd_alloc (htab->elf.dynobj, amt));
1999 if (p == NULL)
2000 return false;
2001 p->next = *head;
2002 *head = p;
2003 p->sec = sec;
2004 p->count = 0;
2005 p->pc_count = 0;
2006 }
2007
2008 p->count += 1;
2009 if (tilegx_elf_howto_table[r_type].pc_relative)
2010 p->pc_count += 1;
2011 }
2012
2013 break;
2014
2015 case R_TILEGX_GNU_VTINHERIT:
2016 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2017 return false;
2018 break;
2019
2020 case R_TILEGX_GNU_VTENTRY:
2021 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2022 return false;
2023 break;
2024
2025 default:
2026 break;
2027 }
2028 }
2029
2030 return true;
2031 }
2032
2033 \f
2034 asection *
2035 tilegx_elf_gc_mark_hook (asection *sec,
2036 struct bfd_link_info *info,
2037 Elf_Internal_Rela *rel,
2038 struct elf_link_hash_entry *h,
2039 Elf_Internal_Sym *sym)
2040 {
2041 if (h != NULL)
2042 {
2043 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2044 {
2045 case R_TILEGX_GNU_VTINHERIT:
2046 case R_TILEGX_GNU_VTENTRY:
2047 return NULL;
2048 }
2049 }
2050
2051 /* FIXME: The test here, in check_relocs and in relocate_section
2052 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
2053 if (bfd_link_pic (info))
2054 {
2055 struct bfd_link_hash_entry *bh;
2056
2057 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2058 {
2059 case R_TILEGX_TLS_GD_CALL:
2060 /* This reloc implicitly references __tls_get_addr. We know
2061 another reloc will reference the same symbol as the one
2062 on this reloc, so the real symbol and section will be
2063 gc marked when processing the other reloc. That lets
2064 us handle __tls_get_addr here. */
2065 bh = NULL;
2066 if (! _bfd_generic_link_add_one_symbol (info, sec->owner,
2067 "__tls_get_addr", 0,
2068 bfd_und_section_ptr,
2069 0, NULL, false,
2070 false, &bh))
2071 return NULL;
2072 h = (struct elf_link_hash_entry *) bh;
2073 BFD_ASSERT (h != NULL);
2074 h->mark = 1;
2075 if (h->is_weakalias)
2076 weakdef (h)->mark = 1;
2077 sym = NULL;
2078 }
2079 }
2080
2081 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2082 }
2083
2084 /* Adjust a symbol defined by a dynamic object and referenced by a
2085 regular object. The current definition is in some section of the
2086 dynamic object, but we're not including those sections. We have to
2087 change the definition to something the rest of the link can
2088 understand. */
2089
2090 bool
2091 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2092 struct elf_link_hash_entry *h)
2093 {
2094 struct tilegx_elf_link_hash_table *htab;
2095 bfd *dynobj;
2096 asection *s, *srel;
2097
2098 htab = tilegx_elf_hash_table (info);
2099 BFD_ASSERT (htab != NULL);
2100
2101 dynobj = htab->elf.dynobj;
2102
2103 /* Make sure we know what is going on here. */
2104 BFD_ASSERT (dynobj != NULL
2105 && (h->needs_plt
2106 || h->is_weakalias
2107 || (h->def_dynamic
2108 && h->ref_regular
2109 && !h->def_regular)));
2110
2111 /* If this is a function, put it in the procedure linkage table. We
2112 will fill in the contents of the procedure linkage table later
2113 (although we could actually do it here). */
2114 if (h->type == STT_FUNC || h->needs_plt)
2115 {
2116 if (h->plt.refcount <= 0
2117 || SYMBOL_CALLS_LOCAL (info, h)
2118 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2119 && h->root.type == bfd_link_hash_undefweak))
2120 {
2121 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2122 reloc in an input file, but the symbol was never referred
2123 to by a dynamic object, or if all references were garbage
2124 collected. In such a case, we don't actually need to build
2125 a procedure linkage table, and we can just do a
2126 R_TILEGX_JUMPOFF_X1 relocation instead. */
2127 h->plt.offset = (bfd_vma) -1;
2128 h->needs_plt = 0;
2129 }
2130
2131 return true;
2132 }
2133 else
2134 h->plt.offset = (bfd_vma) -1;
2135
2136 /* If this is a weak symbol, and there is a real definition, the
2137 processor independent code will have arranged for us to see the
2138 real definition first, and we can just use the same value. */
2139 if (h->is_weakalias)
2140 {
2141 struct elf_link_hash_entry *def = weakdef (h);
2142 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2143 h->root.u.def.section = def->root.u.def.section;
2144 h->root.u.def.value = def->root.u.def.value;
2145 return true;
2146 }
2147
2148 /* This is a reference to a symbol defined by a dynamic object which
2149 is not a function. */
2150
2151 /* If we are creating a shared library, we must presume that the
2152 only references to the symbol are via the global offset table.
2153 For such cases we need not do anything here; the relocations will
2154 be handled correctly by relocate_section. */
2155 if (bfd_link_pic (info))
2156 return true;
2157
2158 /* If there are no references to this symbol that do not use the
2159 GOT, we don't need to generate a copy reloc. */
2160 if (!h->non_got_ref)
2161 return true;
2162
2163 /* If -z nocopyreloc was given, we won't generate them either. */
2164 if (info->nocopyreloc)
2165 {
2166 h->non_got_ref = 0;
2167 return true;
2168 }
2169
2170 /* If we don't find any dynamic relocs in read-only sections, then
2171 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2172 if (!_bfd_elf_readonly_dynrelocs (h))
2173 {
2174 h->non_got_ref = 0;
2175 return true;
2176 }
2177
2178 /* We must allocate the symbol in our .dynbss section, which will
2179 become part of the .bss section of the executable. There will be
2180 an entry for this symbol in the .dynsym section. The dynamic
2181 object will contain position independent code, so all references
2182 from the dynamic object to this symbol will go through the global
2183 offset table. The dynamic linker will use the .dynsym entry to
2184 determine the address it must put in the global offset table, so
2185 both the dynamic object and the regular object will refer to the
2186 same memory location for the variable. */
2187
2188 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2189 to copy the initial value out of the dynamic object and into the
2190 runtime process image. We need to remember the offset into the
2191 .rel.bss section we are going to use. */
2192 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2193 {
2194 s = htab->elf.sdynrelro;
2195 srel = htab->elf.sreldynrelro;
2196 }
2197 else
2198 {
2199 s = htab->elf.sdynbss;
2200 srel = htab->elf.srelbss;
2201 }
2202 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2203 {
2204 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2205 h->needs_copy = 1;
2206 }
2207
2208 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2209 }
2210
2211 /* Allocate space in .plt, .got and associated reloc sections for
2212 dynamic relocs. */
2213
2214 static bool
2215 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2216 {
2217 struct bfd_link_info *info;
2218 struct tilegx_elf_link_hash_table *htab;
2219 struct elf_dyn_relocs *p;
2220
2221 if (h->root.type == bfd_link_hash_indirect)
2222 return true;
2223
2224 info = (struct bfd_link_info *) inf;
2225 htab = tilegx_elf_hash_table (info);
2226 BFD_ASSERT (htab != NULL);
2227
2228 if (htab->elf.dynamic_sections_created
2229 && h->plt.refcount > 0)
2230 {
2231 /* Make sure this symbol is output as a dynamic symbol.
2232 Undefined weak syms won't yet be marked as dynamic. */
2233 if (h->dynindx == -1
2234 && !h->forced_local)
2235 {
2236 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2237 return false;
2238 }
2239
2240 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2241 {
2242 asection *s = htab->elf.splt;
2243
2244 /* Allocate room for the header and tail. */
2245 if (s->size == 0)
2246 {
2247 s->size = PLT_ENTRY_SIZE;
2248 }
2249
2250 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE;
2251
2252 /* If this symbol is not defined in a regular file, and we are
2253 not generating a shared library, then set the symbol to this
2254 location in the .plt. This is required to make function
2255 pointers compare as equal between the normal executable and
2256 the shared library. */
2257 if (! bfd_link_pic (info)
2258 && !h->def_regular)
2259 {
2260 h->root.u.def.section = s;
2261 h->root.u.def.value = h->plt.offset;
2262 }
2263
2264 /* Make room for this entry. */
2265 s->size += PLT_ENTRY_SIZE;
2266
2267 /* We also need to make an entry in the .got.plt section. */
2268 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2269
2270 /* We also need to make an entry in the .rela.plt section. */
2271 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2272 }
2273 else
2274 {
2275 h->plt.offset = (bfd_vma) -1;
2276 h->needs_plt = 0;
2277 }
2278 }
2279 else
2280 {
2281 h->plt.offset = (bfd_vma) -1;
2282 h->needs_plt = 0;
2283 }
2284
2285 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2286 requiring no TLS entry. */
2287 if (h->got.refcount > 0
2288 && !htab->disable_le_transition
2289 && bfd_link_executable (info)
2290 && h->dynindx == -1
2291 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2292 h->got.offset = (bfd_vma) -1;
2293 else if (h->got.refcount > 0)
2294 {
2295 asection *s;
2296 bool dyn;
2297 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2298
2299 /* Make sure this symbol is output as a dynamic symbol.
2300 Undefined weak syms won't yet be marked as dynamic. */
2301 if (h->dynindx == -1
2302 && !h->forced_local)
2303 {
2304 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2305 return false;
2306 }
2307
2308 s = htab->elf.sgot;
2309 h->got.offset = s->size;
2310 s->size += TILEGX_ELF_WORD_BYTES (htab);
2311 /* TLS_GD entries need 2 consecutive GOT slots. */
2312 if (tls_type == GOT_TLS_GD)
2313 s->size += TILEGX_ELF_WORD_BYTES (htab);
2314 dyn = htab->elf.dynamic_sections_created;
2315 /* TLS_IE needs one dynamic relocation,
2316 TLS_GD needs two if local symbol and two if global. */
2317 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2318 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2319 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2320 bfd_link_pic (info),
2321 h))
2322 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2323 }
2324 else
2325 h->got.offset = (bfd_vma) -1;
2326
2327 if (h->dyn_relocs == NULL)
2328 return true;
2329
2330 /* In the shared -Bsymbolic case, discard space allocated for
2331 dynamic pc-relative relocs against symbols which turn out to be
2332 defined in regular objects. For the normal shared case, discard
2333 space for pc-relative relocs that have become local due to symbol
2334 visibility changes. */
2335
2336 if (bfd_link_pic (info))
2337 {
2338 if (SYMBOL_CALLS_LOCAL (info, h))
2339 {
2340 struct elf_dyn_relocs **pp;
2341
2342 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2343 {
2344 p->count -= p->pc_count;
2345 p->pc_count = 0;
2346 if (p->count == 0)
2347 *pp = p->next;
2348 else
2349 pp = &p->next;
2350 }
2351 }
2352
2353 /* Also discard relocs on undefined weak syms with non-default
2354 visibility. */
2355 if (h->dyn_relocs != NULL
2356 && h->root.type == bfd_link_hash_undefweak)
2357 {
2358 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2359 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2360 h->dyn_relocs = NULL;
2361
2362 /* Make sure undefined weak symbols are output as a dynamic
2363 symbol in PIEs. */
2364 else if (h->dynindx == -1
2365 && !h->forced_local)
2366 {
2367 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2368 return false;
2369 }
2370 }
2371 }
2372 else
2373 {
2374 /* For the non-shared case, discard space for relocs against
2375 symbols which turn out to need copy relocs or are not
2376 dynamic. */
2377
2378 if (!h->non_got_ref
2379 && ((h->def_dynamic
2380 && !h->def_regular)
2381 || (htab->elf.dynamic_sections_created
2382 && (h->root.type == bfd_link_hash_undefweak
2383 || h->root.type == bfd_link_hash_undefined))))
2384 {
2385 /* Make sure this symbol is output as a dynamic symbol.
2386 Undefined weak syms won't yet be marked as dynamic. */
2387 if (h->dynindx == -1
2388 && !h->forced_local)
2389 {
2390 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2391 return false;
2392 }
2393
2394 /* If that succeeded, we know we'll be keeping all the
2395 relocs. */
2396 if (h->dynindx != -1)
2397 goto keep;
2398 }
2399
2400 h->dyn_relocs = NULL;
2401
2402 keep: ;
2403 }
2404
2405 /* Finally, allocate space. */
2406 for (p = h->dyn_relocs; p != NULL; p = p->next)
2407 {
2408 asection *sreloc = elf_section_data (p->sec)->sreloc;
2409 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2410 }
2411
2412 return true;
2413 }
2414
2415 /* Return true if the dynamic symbol for a given section should be
2416 omitted when creating a shared library. */
2417
2418 bool
2419 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2420 struct bfd_link_info *info,
2421 asection *p)
2422 {
2423 /* We keep the .got section symbol so that explicit relocations
2424 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2425 can be turned into relocations against the .got symbol. */
2426 if (strcmp (p->name, ".got") == 0)
2427 return false;
2428
2429 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p);
2430 }
2431
2432 bool
2433 tilegx_elf_late_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2434 struct bfd_link_info *info)
2435 {
2436 struct tilegx_elf_link_hash_table *htab;
2437 bfd *dynobj;
2438 asection *s;
2439 bfd *ibfd;
2440
2441 htab = tilegx_elf_hash_table (info);
2442 BFD_ASSERT (htab != NULL);
2443 dynobj = htab->elf.dynobj;
2444 if (dynobj == NULL)
2445 return true;
2446
2447 if (elf_hash_table (info)->dynamic_sections_created)
2448 {
2449 /* Set the contents of the .interp section to the interpreter. */
2450 if (bfd_link_executable (info) && !info->nointerp)
2451 {
2452 s = bfd_get_linker_section (dynobj, ".interp");
2453 BFD_ASSERT (s != NULL);
2454 s->size = strlen (htab->dynamic_interpreter) + 1;
2455 s->contents = (unsigned char *) htab->dynamic_interpreter;
2456 }
2457 }
2458
2459 /* Set up .got offsets for local syms, and space for local dynamic
2460 relocs. */
2461 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2462 {
2463 bfd_signed_vma *local_got;
2464 bfd_signed_vma *end_local_got;
2465 char *local_tls_type;
2466 bfd_size_type locsymcount;
2467 Elf_Internal_Shdr *symtab_hdr;
2468 asection *srel;
2469
2470 if (! is_tilegx_elf (ibfd))
2471 continue;
2472
2473 for (s = ibfd->sections; s != NULL; s = s->next)
2474 {
2475 struct elf_dyn_relocs *p;
2476
2477 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2478 {
2479 if (!bfd_is_abs_section (p->sec)
2480 && bfd_is_abs_section (p->sec->output_section))
2481 {
2482 /* Input section has been discarded, either because
2483 it is a copy of a linkonce section or due to
2484 linker script /DISCARD/, so we'll be discarding
2485 the relocs too. */
2486 }
2487 else if (p->count != 0)
2488 {
2489 srel = elf_section_data (p->sec)->sreloc;
2490 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2491 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2492 {
2493 info->flags |= DF_TEXTREL;
2494
2495 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
2496 p->sec->owner, p->sec);
2497 }
2498 }
2499 }
2500 }
2501
2502 local_got = elf_local_got_refcounts (ibfd);
2503 if (!local_got)
2504 continue;
2505
2506 symtab_hdr = &elf_symtab_hdr (ibfd);
2507 locsymcount = symtab_hdr->sh_info;
2508 end_local_got = local_got + locsymcount;
2509 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2510 s = htab->elf.sgot;
2511 srel = htab->elf.srelgot;
2512 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2513 {
2514 if (*local_got > 0)
2515 {
2516 *local_got = s->size;
2517 s->size += TILEGX_ELF_WORD_BYTES (htab);
2518 if (*local_tls_type == GOT_TLS_GD)
2519 s->size += TILEGX_ELF_WORD_BYTES (htab);
2520 if (bfd_link_pic (info)
2521 || *local_tls_type == GOT_TLS_GD
2522 || *local_tls_type == GOT_TLS_IE)
2523 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2524 }
2525 else
2526 *local_got = (bfd_vma) -1;
2527 }
2528 }
2529
2530 /* Allocate global sym .plt and .got entries, and space for global
2531 sym dynamic relocs. */
2532 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2533
2534 if (elf_hash_table (info)->dynamic_sections_created)
2535 {
2536 /* If the .got section is more than 0x8000 bytes, we add
2537 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2538 bit relocations have a greater chance of working. */
2539 if (htab->elf.sgot->size >= 0x8000
2540 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2541 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2542 }
2543
2544 if (htab->elf.sgotplt)
2545 {
2546 struct elf_link_hash_entry *got;
2547 got = elf_link_hash_lookup (elf_hash_table (info),
2548 "_GLOBAL_OFFSET_TABLE_",
2549 false, false, false);
2550
2551 /* Don't allocate .got.plt section if there are no GOT nor PLT
2552 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2553 if ((got == NULL
2554 || !got->ref_regular_nonweak)
2555 && (htab->elf.sgotplt->size
2556 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2557 && (htab->elf.splt == NULL
2558 || htab->elf.splt->size == 0)
2559 && (htab->elf.sgot == NULL
2560 || (htab->elf.sgot->size
2561 == get_elf_backend_data (output_bfd)->got_header_size)))
2562 htab->elf.sgotplt->size = 0;
2563 }
2564
2565 /* The check_relocs and adjust_dynamic_symbol entry points have
2566 determined the sizes of the various dynamic sections. Allocate
2567 memory for them. */
2568 for (s = dynobj->sections; s != NULL; s = s->next)
2569 {
2570 if ((s->flags & SEC_LINKER_CREATED) == 0)
2571 continue;
2572
2573 if (s == htab->elf.splt
2574 || s == htab->elf.sgot
2575 || s == htab->elf.sgotplt
2576 || s == htab->elf.sdynbss
2577 || s == htab->elf.sdynrelro)
2578 {
2579 /* Strip this section if we don't need it; see the
2580 comment below. */
2581 }
2582 else if (startswith (s->name, ".rela"))
2583 {
2584 if (s->size != 0)
2585 {
2586 /* We use the reloc_count field as a counter if we need
2587 to copy relocs into the output file. */
2588 s->reloc_count = 0;
2589 }
2590 }
2591 else
2592 {
2593 /* It's not one of our sections. */
2594 continue;
2595 }
2596
2597 if (s->size == 0)
2598 {
2599 /* If we don't need this section, strip it from the
2600 output file. This is mostly to handle .rela.bss and
2601 .rela.plt. We must create both sections in
2602 create_dynamic_sections, because they must be created
2603 before the linker maps input sections to output
2604 sections. The linker does that before
2605 adjust_dynamic_symbol is called, and it is that
2606 function which decides whether anything needs to go
2607 into these sections. */
2608 s->flags |= SEC_EXCLUDE;
2609 continue;
2610 }
2611
2612 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2613 continue;
2614
2615 /* Allocate memory for the section contents. Zero the memory
2616 for the benefit of .rela.plt, which has 4 unused entries
2617 at the beginning, and we don't want garbage. */
2618 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2619 if (s->contents == NULL)
2620 return false;
2621 }
2622
2623 return _bfd_elf_add_dynamic_tags (output_bfd, info, true);
2624 }
2625 \f
2626 /* Return the base VMA address which should be subtracted from real addresses
2627 when resolving @dtpoff relocation.
2628 This is PT_TLS segment p_vaddr. */
2629
2630 static bfd_vma
2631 dtpoff_base (struct bfd_link_info *info)
2632 {
2633 /* If tls_sec is NULL, we should have signalled an error already. */
2634 if (elf_hash_table (info)->tls_sec == NULL)
2635 return 0;
2636 return elf_hash_table (info)->tls_sec->vma;
2637 }
2638
2639 /* Return the relocation value for @tpoff relocation. */
2640
2641 static bfd_vma
2642 tpoff (struct bfd_link_info *info, bfd_vma address)
2643 {
2644 struct elf_link_hash_table *htab = elf_hash_table (info);
2645
2646 /* If tls_sec is NULL, we should have signalled an error already. */
2647 if (htab->tls_sec == NULL)
2648 return 0;
2649
2650 return (address - htab->tls_sec->vma);
2651 }
2652
2653 /* Copy SIZE bits from FROM to TO at address ADDR. */
2654
2655 static void
2656 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2657 {
2658 int i;
2659 for (i = 0; i < size; i++)
2660 {
2661 int from_byte = (from + i) / 8;
2662 int from_bit = (from + i) % 8;
2663 int to_byte = (to + i) / 8;
2664 int to_bit = (to + i) % 8;
2665 bfd_byte to_mask = 1 << to_bit;
2666 addr[to_byte] = (addr[to_byte] & ~to_mask)
2667 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2668 }
2669 }
2670
2671 /* Replace the MASK bits in ADDR with those in INSN, for the next
2672 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2673
2674 static void
2675 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2676 const bfd_byte *insn)
2677 {
2678 int i;
2679 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2680 {
2681 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2682 }
2683 }
2684
2685 /* Mask to extract the bits corresponding to an instruction in a
2686 specific pipe of a bundle. */
2687 static const bfd_byte insn_mask_X1[] = {
2688 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
2689 };
2690
2691 /* Mask to extract the bits corresponding to an instruction in a
2692 specific pipe of a bundle, minus the destination operand and the
2693 first source operand. */
2694 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2695 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2696 };
2697
2698 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2699 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
2700 };
2701
2702 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2703 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2704 };
2705 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2706 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
2707 };
2708
2709 /* Mask to extract the bits corresponding to an instruction in a
2710 specific pipe of a bundle, minus the register operands. */
2711 static const bfd_byte insn_mask_X0_no_operand[] = {
2712 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
2713 };
2714
2715 static const bfd_byte insn_mask_X1_no_operand[] = {
2716 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
2717 };
2718
2719 static const bfd_byte insn_mask_Y0_no_operand[] = {
2720 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
2721 };
2722
2723 static const bfd_byte insn_mask_Y1_no_operand[] = {
2724 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
2725 };
2726
2727 /* Various instructions synthesized to support tls references. */
2728
2729 /* ld r0, r0 in the X1 pipe, used for tls ie. */
2730 static const bfd_byte insn_tls_ie_ld_X1[] = {
2731 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
2732 };
2733
2734 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
2735 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
2736 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
2737 };
2738
2739 /* add r0, r0, tp in various pipes, used for tls ie. */
2740 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2741 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
2742 };
2743 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2744 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
2745 };
2746
2747 /* addx r0, r0, tp in various pipes, used for tls ie. */
2748 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
2749 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
2750 };
2751 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
2752 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
2753 };
2754
2755 /* move r0, r0 in various pipes, used for tls gd. */
2756 static const bfd_byte insn_tls_gd_add_X0X1[] = {
2757 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
2758 };
2759 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
2760 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
2761 };
2762
2763 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
2764 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
2765
2766 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
2767 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
2768
2769 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
2770 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
2771
2772 /* Relocate an TILEGX ELF section.
2773
2774 The RELOCATE_SECTION function is called by the new ELF backend linker
2775 to handle the relocations for a section.
2776
2777 The relocs are always passed as Rela structures.
2778
2779 This function is responsible for adjusting the section contents as
2780 necessary, and (if generating a relocatable output file) adjusting
2781 the reloc addend as necessary.
2782
2783 This function does not have to worry about setting the reloc
2784 address or the reloc symbol index.
2785
2786 LOCAL_SYMS is a pointer to the swapped in local symbols.
2787
2788 LOCAL_SECTIONS is an array giving the section in the input file
2789 corresponding to the st_shndx field of each local symbol.
2790
2791 The global hash table entry for the global symbols can be found
2792 via elf_sym_hashes (input_bfd).
2793
2794 When generating relocatable output, this function must handle
2795 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2796 going to be the section symbol corresponding to the output
2797 section, which means that the addend must be adjusted
2798 accordingly. */
2799
2800 int
2801 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
2802 bfd *input_bfd, asection *input_section,
2803 bfd_byte *contents, Elf_Internal_Rela *relocs,
2804 Elf_Internal_Sym *local_syms,
2805 asection **local_sections)
2806 {
2807 struct tilegx_elf_link_hash_table *htab;
2808 Elf_Internal_Shdr *symtab_hdr;
2809 struct elf_link_hash_entry **sym_hashes;
2810 bfd_vma *local_got_offsets;
2811 bfd_vma got_base;
2812 asection *sreloc;
2813 Elf_Internal_Rela *rel;
2814 Elf_Internal_Rela *relend;
2815 int num_relocs;
2816
2817 htab = tilegx_elf_hash_table (info);
2818 BFD_ASSERT (htab != NULL);
2819 symtab_hdr = &elf_symtab_hdr (input_bfd);
2820 sym_hashes = elf_sym_hashes (input_bfd);
2821 local_got_offsets = elf_local_got_offsets (input_bfd);
2822
2823 if (elf_hash_table (info)->hgot == NULL)
2824 got_base = 0;
2825 else
2826 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2827
2828 sreloc = elf_section_data (input_section)->sreloc;
2829
2830 rel = relocs;
2831 num_relocs = input_section->reloc_count;
2832 relend = relocs + num_relocs;
2833 for (; rel < relend; rel++)
2834 {
2835 int r_type, tls_type;
2836 bool is_tls_iele, is_tls_le;
2837 reloc_howto_type *howto;
2838 unsigned long r_symndx;
2839 struct elf_link_hash_entry *h;
2840 Elf_Internal_Sym *sym;
2841 tilegx_create_func create_func;
2842 asection *sec;
2843 bfd_vma relocation;
2844 bfd_reloc_status_type r;
2845 const char *name;
2846 bfd_vma off;
2847 bool is_plt = false;
2848 bool resolved_to_zero;
2849 bool unresolved_reloc;
2850
2851 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2852 if (r_type == R_TILEGX_GNU_VTINHERIT
2853 || r_type == R_TILEGX_GNU_VTENTRY)
2854 continue;
2855
2856 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
2857 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2858
2859 howto = tilegx_elf_howto_table + r_type;
2860
2861 /* This is a final link. */
2862 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2863 h = NULL;
2864 sym = NULL;
2865 sec = NULL;
2866 unresolved_reloc = false;
2867 if (r_symndx < symtab_hdr->sh_info)
2868 {
2869 sym = local_syms + r_symndx;
2870 sec = local_sections[r_symndx];
2871 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2872 }
2873 else
2874 {
2875 bool warned ATTRIBUTE_UNUSED;
2876 bool ignored ATTRIBUTE_UNUSED;
2877
2878 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2879 r_symndx, symtab_hdr, sym_hashes,
2880 h, sec, relocation,
2881 unresolved_reloc, warned, ignored);
2882 if (warned)
2883 {
2884 /* To avoid generating warning messages about truncated
2885 relocations, set the relocation's address to be the same as
2886 the start of this section. */
2887 if (input_section->output_section != NULL)
2888 relocation = input_section->output_section->vma;
2889 else
2890 relocation = 0;
2891 }
2892 }
2893
2894 if (sec != NULL && discarded_section (sec))
2895 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2896 rel, 1, relend, howto, 0, contents);
2897
2898 if (bfd_link_relocatable (info))
2899 continue;
2900
2901 if (h != NULL)
2902 name = h->root.root.string;
2903 else
2904 {
2905 name = (bfd_elf_string_from_elf_section
2906 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2907 if (name == NULL || *name == '\0')
2908 name = bfd_section_name (sec);
2909 }
2910
2911 switch (r_type)
2912 {
2913 case R_TILEGX_TLS_GD_CALL:
2914 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
2915 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
2916 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
2917 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
2918 case R_TILEGX_IMM8_X0_TLS_ADD:
2919 case R_TILEGX_IMM8_Y0_TLS_ADD:
2920 case R_TILEGX_IMM8_X1_TLS_ADD:
2921 case R_TILEGX_IMM8_Y1_TLS_ADD:
2922 tls_type = GOT_UNKNOWN;
2923 if (h == NULL && local_got_offsets)
2924 tls_type =
2925 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
2926 else if (h != NULL)
2927 tls_type = tilegx_elf_hash_entry(h)->tls_type;
2928
2929 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE);
2930 is_tls_le = is_tls_iele && (!input_section->sec_flg0
2931 && bfd_link_executable (info)
2932 && (h == NULL || h->dynindx == -1));
2933
2934 if (r_type == R_TILEGX_TLS_GD_CALL)
2935 {
2936 if (is_tls_le)
2937 {
2938 /* GD -> LE */
2939 tilegx_replace_insn (contents + rel->r_offset,
2940 insn_mask_X1, insn_move_X0X1);
2941 continue;
2942 }
2943 else if (is_tls_iele)
2944 {
2945 /* GD -> IE */
2946 if (ABI_64_P (output_bfd))
2947 tilegx_replace_insn (contents + rel->r_offset,
2948 insn_mask_X1, insn_tls_ie_ld_X1);
2949 else
2950 tilegx_replace_insn (contents + rel->r_offset,
2951 insn_mask_X1, insn_tls_ie_ld4s_X1);
2952 continue;
2953 }
2954
2955 /* GD -> GD */
2956 h = (struct elf_link_hash_entry *)
2957 bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
2958 false, true);
2959 BFD_ASSERT (h != NULL);
2960 r_type = R_TILEGX_JUMPOFF_X1_PLT;
2961 howto = tilegx_elf_howto_table + r_type;
2962 }
2963 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
2964 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
2965 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
2966 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
2967 {
2968 bool is_pipe0 =
2969 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
2970 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
2971 bool is_X0X1 =
2972 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
2973 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
2974 int dest_begin = is_pipe0 ? 0 : 31;
2975 int src_begin;
2976 const bfd_byte *insn;
2977 const bfd_byte *mask = NULL;
2978
2979 if (is_tls_le)
2980 {
2981 /* 1. copy dest operand into the first source operand.
2982 2. change the opcode to "move". */
2983 src_begin = is_pipe0 ? 6 : 37;
2984 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
2985
2986 switch (r_type)
2987 {
2988 case R_TILEGX_IMM8_X0_TLS_ADD:
2989 mask = insn_mask_X0_no_dest_no_srca;
2990 break;
2991 case R_TILEGX_IMM8_X1_TLS_ADD:
2992 mask = insn_mask_X1_no_dest_no_srca;
2993 break;
2994 case R_TILEGX_IMM8_Y0_TLS_ADD:
2995 mask = insn_mask_Y0_no_dest_no_srca;
2996 break;
2997 case R_TILEGX_IMM8_Y1_TLS_ADD:
2998 mask = insn_mask_Y1_no_dest_no_srca;
2999 break;
3000 }
3001 }
3002 else
3003 {
3004 /* 1. copy dest operand into the second source operand.
3005 2. change the opcode to "add". */
3006 src_begin = is_pipe0 ? 12 : 43;
3007 if (ABI_64_P (output_bfd))
3008 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3009 else
3010 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3011
3012 switch (r_type)
3013 {
3014 case R_TILEGX_IMM8_X0_TLS_ADD:
3015 mask = insn_mask_X0_no_operand;
3016 break;
3017 case R_TILEGX_IMM8_X1_TLS_ADD:
3018 mask = insn_mask_X1_no_operand;
3019 break;
3020 case R_TILEGX_IMM8_Y0_TLS_ADD:
3021 mask = insn_mask_Y0_no_operand;
3022 break;
3023 case R_TILEGX_IMM8_Y1_TLS_ADD:
3024 mask = insn_mask_Y1_no_operand;
3025 break;
3026 }
3027 }
3028
3029 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3030 src_begin, 6);
3031 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3032
3033 continue;
3034 }
3035 else
3036 {
3037 const bfd_byte *mask = NULL;
3038 const bfd_byte *add_insn = NULL;
3039 bool is_64bit = ABI_64_P (output_bfd);
3040
3041 switch (r_type)
3042 {
3043 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3044 add_insn = is_tls_iele
3045 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3046 : insn_tls_gd_add_X0X1;
3047 mask = insn_mask_X0_no_dest_no_srca;
3048 break;
3049 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3050 add_insn = is_tls_iele
3051 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3052 : insn_tls_gd_add_X0X1;
3053 mask = insn_mask_X1_no_dest_no_srca;
3054 break;
3055 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3056 add_insn = is_tls_iele
3057 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3058 : insn_tls_gd_add_Y0Y1;
3059 mask = insn_mask_Y0_no_dest_no_srca;
3060 break;
3061 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3062 add_insn = is_tls_iele
3063 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3064 : insn_tls_gd_add_Y0Y1;
3065 mask = insn_mask_Y1_no_dest_no_srca;
3066 break;
3067 }
3068
3069 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3070
3071 continue;
3072 }
3073 break;
3074 case R_TILEGX_TLS_IE_LOAD:
3075 if (!input_section->sec_flg0
3076 && bfd_link_executable (info)
3077 && (h == NULL || h->dynindx == -1))
3078 {
3079 /* IE -> LE */
3080 tilegx_replace_insn (contents + rel->r_offset,
3081 insn_mask_X1_no_dest_no_srca,
3082 insn_move_X0X1);
3083 }
3084 else
3085 {
3086 /* IE -> IE */
3087 if (ABI_64_P (output_bfd))
3088 tilegx_replace_insn (contents + rel->r_offset,
3089 insn_mask_X1_no_dest_no_srca,
3090 insn_tls_ie_ld_X1);
3091 else
3092 tilegx_replace_insn (contents + rel->r_offset,
3093 insn_mask_X1_no_dest_no_srca,
3094 insn_tls_ie_ld4s_X1);
3095 }
3096 continue;
3097 break;
3098 default:
3099 break;
3100 }
3101
3102 resolved_to_zero = (h != NULL
3103 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
3104
3105 switch (r_type)
3106 {
3107 case R_TILEGX_IMM16_X0_HW0_GOT:
3108 case R_TILEGX_IMM16_X1_HW0_GOT:
3109 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3110 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3111 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3112 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3113 /* Relocation is to the entry for this symbol in the global
3114 offset table. */
3115 if (htab->elf.sgot == NULL)
3116 abort ();
3117
3118 if (h != NULL)
3119 {
3120 bool dyn;
3121
3122 off = h->got.offset;
3123 BFD_ASSERT (off != (bfd_vma) -1);
3124 dyn = elf_hash_table (info)->dynamic_sections_created;
3125
3126 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3127 bfd_link_pic (info),
3128 h)
3129 || (bfd_link_pic (info)
3130 && SYMBOL_REFERENCES_LOCAL (info, h)))
3131 {
3132 /* This is actually a static link, or it is a
3133 -Bsymbolic link and the symbol is defined
3134 locally, or the symbol was forced to be local
3135 because of a version file. We must initialize
3136 this entry in the global offset table. Since the
3137 offset must always be a multiple
3138 of 8 for 64-bit, we use the least significant bit
3139 to record whether we have initialized it already.
3140
3141 When doing a dynamic link, we create a .rela.got
3142 relocation entry to initialize the value. This
3143 is done in the finish_dynamic_symbol routine. */
3144 if ((off & 1) != 0)
3145 off &= ~1;
3146 else
3147 {
3148 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3149 htab->elf.sgot->contents + off);
3150 h->got.offset |= 1;
3151 }
3152 }
3153 else
3154 unresolved_reloc = false;
3155 }
3156 else
3157 {
3158 BFD_ASSERT (local_got_offsets != NULL
3159 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3160
3161 off = local_got_offsets[r_symndx];
3162
3163 /* The offset must always be a multiple of 8 on 64-bit.
3164 We use the least significant bit to record
3165 whether we have already processed this entry. */
3166 if ((off & 1) != 0)
3167 off &= ~1;
3168 else
3169 {
3170 if (bfd_link_pic (info))
3171 {
3172 asection *s;
3173 Elf_Internal_Rela outrel;
3174
3175 /* We need to generate a R_TILEGX_RELATIVE reloc
3176 for the dynamic linker. */
3177 s = htab->elf.srelgot;
3178 BFD_ASSERT (s != NULL);
3179
3180 outrel.r_offset = (htab->elf.sgot->output_section->vma
3181 + htab->elf.sgot->output_offset
3182 + off);
3183 outrel.r_info =
3184 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3185 outrel.r_addend = relocation;
3186 relocation = 0;
3187 tilegx_elf_append_rela (output_bfd, s, &outrel);
3188 }
3189
3190 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3191 htab->elf.sgot->contents + off);
3192 local_got_offsets[r_symndx] |= 1;
3193 }
3194 }
3195 relocation = off - got_base;
3196 break;
3197
3198 case R_TILEGX_JUMPOFF_X1_PLT:
3199 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
3200 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
3201 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
3202 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
3203 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
3204 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
3205 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
3206 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
3207 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
3208 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
3209 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
3210 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
3211 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
3212 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
3213 /* Relocation is to the entry for this symbol in the
3214 procedure linkage table. */
3215 BFD_ASSERT (h != NULL);
3216
3217 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3218 {
3219 /* We didn't make a PLT entry for this symbol. This
3220 happens when statically linking PIC code, or when
3221 using -Bsymbolic. */
3222 break;
3223 }
3224
3225 relocation = (htab->elf.splt->output_section->vma
3226 + htab->elf.splt->output_offset
3227 + h->plt.offset);
3228 unresolved_reloc = false;
3229 break;
3230
3231 case R_TILEGX_64_PCREL:
3232 case R_TILEGX_32_PCREL:
3233 case R_TILEGX_16_PCREL:
3234 case R_TILEGX_8_PCREL:
3235 case R_TILEGX_IMM16_X0_HW0_PCREL:
3236 case R_TILEGX_IMM16_X1_HW0_PCREL:
3237 case R_TILEGX_IMM16_X0_HW1_PCREL:
3238 case R_TILEGX_IMM16_X1_HW1_PCREL:
3239 case R_TILEGX_IMM16_X0_HW2_PCREL:
3240 case R_TILEGX_IMM16_X1_HW2_PCREL:
3241 case R_TILEGX_IMM16_X0_HW3_PCREL:
3242 case R_TILEGX_IMM16_X1_HW3_PCREL:
3243 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3244 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3245 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3246 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3247 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3248 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3249 if (h != NULL
3250 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3251 break;
3252 /* Fall through. */
3253 case R_TILEGX_64:
3254 case R_TILEGX_32:
3255 case R_TILEGX_16:
3256 case R_TILEGX_8:
3257 case R_TILEGX_HW0:
3258 case R_TILEGX_HW1:
3259 case R_TILEGX_HW2:
3260 case R_TILEGX_HW3:
3261 case R_TILEGX_HW0_LAST:
3262 case R_TILEGX_HW1_LAST:
3263 case R_TILEGX_HW2_LAST:
3264 case R_TILEGX_COPY:
3265 case R_TILEGX_GLOB_DAT:
3266 case R_TILEGX_JMP_SLOT:
3267 case R_TILEGX_RELATIVE:
3268 case R_TILEGX_BROFF_X1:
3269 case R_TILEGX_JUMPOFF_X1:
3270 case R_TILEGX_IMM8_X0:
3271 case R_TILEGX_IMM8_Y0:
3272 case R_TILEGX_IMM8_X1:
3273 case R_TILEGX_IMM8_Y1:
3274 case R_TILEGX_DEST_IMM8_X1:
3275 case R_TILEGX_MT_IMM14_X1:
3276 case R_TILEGX_MF_IMM14_X1:
3277 case R_TILEGX_MMSTART_X0:
3278 case R_TILEGX_MMEND_X0:
3279 case R_TILEGX_SHAMT_X0:
3280 case R_TILEGX_SHAMT_X1:
3281 case R_TILEGX_SHAMT_Y0:
3282 case R_TILEGX_SHAMT_Y1:
3283 case R_TILEGX_IMM16_X0_HW0:
3284 case R_TILEGX_IMM16_X1_HW0:
3285 case R_TILEGX_IMM16_X0_HW1:
3286 case R_TILEGX_IMM16_X1_HW1:
3287 case R_TILEGX_IMM16_X0_HW2:
3288 case R_TILEGX_IMM16_X1_HW2:
3289 case R_TILEGX_IMM16_X0_HW3:
3290 case R_TILEGX_IMM16_X1_HW3:
3291 case R_TILEGX_IMM16_X0_HW0_LAST:
3292 case R_TILEGX_IMM16_X1_HW0_LAST:
3293 case R_TILEGX_IMM16_X0_HW1_LAST:
3294 case R_TILEGX_IMM16_X1_HW1_LAST:
3295 case R_TILEGX_IMM16_X0_HW2_LAST:
3296 case R_TILEGX_IMM16_X1_HW2_LAST:
3297 if ((input_section->flags & SEC_ALLOC) == 0)
3298 break;
3299
3300 if ((bfd_link_pic (info)
3301 && (h == NULL
3302 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3303 && !resolved_to_zero)
3304 || h->root.type != bfd_link_hash_undefweak)
3305 && (! howto->pc_relative
3306 || !SYMBOL_CALLS_LOCAL (info, h)))
3307 || (!bfd_link_pic (info)
3308 && h != NULL
3309 && h->dynindx != -1
3310 && !h->non_got_ref
3311 && ((h->def_dynamic
3312 && !h->def_regular)
3313 || h->root.type == bfd_link_hash_undefweak
3314 || h->root.type == bfd_link_hash_undefined)))
3315 {
3316 Elf_Internal_Rela outrel;
3317 bool skip, relocate = false;
3318
3319 /* When generating a shared object, these relocations
3320 are copied into the output file to be resolved at run
3321 time. */
3322
3323 BFD_ASSERT (sreloc != NULL);
3324
3325 skip = false;
3326
3327 outrel.r_offset =
3328 _bfd_elf_section_offset (output_bfd, info, input_section,
3329 rel->r_offset);
3330 if (outrel.r_offset == (bfd_vma) -1)
3331 skip = true;
3332 else if (outrel.r_offset == (bfd_vma) -2)
3333 skip = true, relocate = true;
3334 outrel.r_offset += (input_section->output_section->vma
3335 + input_section->output_offset);
3336
3337 switch (r_type)
3338 {
3339 case R_TILEGX_64_PCREL:
3340 case R_TILEGX_32_PCREL:
3341 case R_TILEGX_16_PCREL:
3342 case R_TILEGX_8_PCREL:
3343 /* If the symbol is not dynamic, we should not keep
3344 a dynamic relocation. But an .rela.* slot has been
3345 allocated for it, output R_TILEGX_NONE.
3346 FIXME: Add code tracking needed dynamic relocs as
3347 e.g. i386 has. */
3348 if (h->dynindx == -1)
3349 skip = true, relocate = true;
3350 break;
3351 }
3352
3353 if (skip)
3354 memset (&outrel, 0, sizeof outrel);
3355 /* h->dynindx may be -1 if the symbol was marked to
3356 become local. */
3357 else if (h != NULL &&
3358 h->dynindx != -1
3359 && (! is_plt
3360 || !bfd_link_pic (info)
3361 || !SYMBOLIC_BIND (info, h)
3362 || !h->def_regular))
3363 {
3364 BFD_ASSERT (h->dynindx != -1);
3365 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3366 outrel.r_addend = rel->r_addend;
3367 }
3368 else
3369 {
3370 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3371 {
3372 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3373 R_TILEGX_RELATIVE);
3374 outrel.r_addend = relocation + rel->r_addend;
3375 }
3376 else
3377 {
3378 long indx;
3379
3380 outrel.r_addend = relocation + rel->r_addend;
3381
3382 if (is_plt)
3383 sec = htab->elf.splt;
3384
3385 if (bfd_is_abs_section (sec))
3386 indx = 0;
3387 else if (sec == NULL || sec->owner == NULL)
3388 {
3389 bfd_set_error (bfd_error_bad_value);
3390 return false;
3391 }
3392 else
3393 {
3394 asection *osec;
3395
3396 /* We are turning this relocation into one
3397 against a section symbol. It would be
3398 proper to subtract the symbol's value,
3399 osec->vma, from the emitted reloc addend,
3400 but ld.so expects buggy relocs. */
3401 osec = sec->output_section;
3402 indx = elf_section_data (osec)->dynindx;
3403
3404 if (indx == 0)
3405 {
3406 osec = htab->elf.text_index_section;
3407 indx = elf_section_data (osec)->dynindx;
3408 }
3409
3410 /* FIXME: we really should be able to link non-pic
3411 shared libraries. */
3412 if (indx == 0)
3413 {
3414 BFD_FAIL ();
3415 _bfd_error_handler
3416 (_("%pB: probably compiled without -fPIC?"),
3417 input_bfd);
3418 bfd_set_error (bfd_error_bad_value);
3419 return false;
3420 }
3421 }
3422
3423 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3424 r_type);
3425 }
3426 }
3427
3428 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3429
3430 /* This reloc will be computed at runtime, so there's no
3431 need to do anything now. */
3432 if (! relocate)
3433 continue;
3434 }
3435 break;
3436
3437 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3438 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3439 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3440 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3441 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3442 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3443 if (!bfd_link_executable (info))
3444 {
3445 Elf_Internal_Rela outrel;
3446 bool skip;
3447
3448 BFD_ASSERT (sreloc != NULL);
3449 skip = false;
3450 outrel.r_offset =
3451 _bfd_elf_section_offset (output_bfd, info, input_section,
3452 rel->r_offset);
3453 if (outrel.r_offset == (bfd_vma) -1)
3454 skip = true;
3455 else if (outrel.r_offset == (bfd_vma) -2)
3456 skip = true;
3457 outrel.r_offset += (input_section->output_section->vma
3458 + input_section->output_offset);
3459 if (skip)
3460 memset (&outrel, 0, sizeof outrel);
3461 else
3462 {
3463 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3464 outrel.r_addend = relocation - dtpoff_base (info)
3465 + rel->r_addend;
3466 }
3467
3468 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3469 continue;
3470 }
3471 relocation = tpoff (info, relocation);
3472 break;
3473
3474 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3475 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3476 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3477 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3478 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3479 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3480 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3481 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3482 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3483 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3484 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3485 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3486 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3487 input_section->sec_flg0);
3488 tls_type = GOT_UNKNOWN;
3489 if (h == NULL && local_got_offsets)
3490 tls_type =
3491 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3492 else if (h != NULL)
3493 {
3494 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3495 if (bfd_link_executable (info)
3496 && h->dynindx == -1
3497 && tls_type == GOT_TLS_IE)
3498 r_type = (!input_section->sec_flg0
3499 ? tilegx_tls_translate_to_le (r_type)
3500 : tilegx_tls_translate_to_ie (r_type));
3501 }
3502
3503 if (tls_type == GOT_TLS_IE)
3504 r_type = tilegx_tls_translate_to_ie (r_type);
3505
3506 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3507 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3508 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3509 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3510 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3511 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3512 {
3513 relocation = tpoff (info, relocation);
3514 break;
3515 }
3516
3517 if (h != NULL)
3518 {
3519 off = h->got.offset;
3520 h->got.offset |= 1;
3521 }
3522 else
3523 {
3524 BFD_ASSERT (local_got_offsets != NULL);
3525 off = local_got_offsets[r_symndx];
3526 local_got_offsets[r_symndx] |= 1;
3527 }
3528
3529 if (htab->elf.sgot == NULL)
3530 abort ();
3531
3532 if ((off & 1) != 0)
3533 off &= ~1;
3534 else
3535 {
3536 Elf_Internal_Rela outrel;
3537 int indx = 0;
3538 bool need_relocs = false;
3539
3540 if (htab->elf.srelgot == NULL)
3541 abort ();
3542
3543 if (h != NULL)
3544 {
3545 bool dyn;
3546 dyn = htab->elf.dynamic_sections_created;
3547
3548 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3549 bfd_link_pic (info),
3550 h)
3551 && (!bfd_link_pic (info)
3552 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3553 {
3554 indx = h->dynindx;
3555 }
3556 }
3557
3558 /* The GOT entries have not been initialized yet. Do it
3559 now, and emit any relocations. */
3560 if ((bfd_link_pic (info) || indx != 0)
3561 && (h == NULL
3562 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3563 || h->root.type != bfd_link_hash_undefweak))
3564 need_relocs = true;
3565
3566 switch (r_type)
3567 {
3568 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3569 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3570 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3571 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3572 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3573 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3574 if (need_relocs) {
3575 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3576 htab->elf.sgot->contents + off);
3577 outrel.r_offset = (htab->elf.sgot->output_section->vma
3578 + htab->elf.sgot->output_offset + off);
3579 outrel.r_addend = 0;
3580 if (indx == 0)
3581 outrel.r_addend = relocation - dtpoff_base (info);
3582 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3583 TILEGX_ELF_TPOFF_RELOC (htab));
3584 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3585 } else {
3586 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3587 tpoff (info, relocation),
3588 htab->elf.sgot->contents + off);
3589 }
3590 break;
3591
3592 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3593 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3594 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3595 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3596 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3597 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3598 if (need_relocs) {
3599 outrel.r_offset = (htab->elf.sgot->output_section->vma
3600 + htab->elf.sgot->output_offset + off);
3601 outrel.r_addend = 0;
3602 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3603 TILEGX_ELF_DTPMOD_RELOC (htab));
3604 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3605 htab->elf.sgot->contents + off);
3606 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3607 if (indx == 0)
3608 {
3609 BFD_ASSERT (! unresolved_reloc);
3610 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3611 relocation - dtpoff_base (info),
3612 (htab->elf.sgot->contents + off +
3613 TILEGX_ELF_WORD_BYTES (htab)));
3614 }
3615 else
3616 {
3617 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3618 (htab->elf.sgot->contents + off +
3619 TILEGX_ELF_WORD_BYTES (htab)));
3620 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3621 TILEGX_ELF_DTPOFF_RELOC (htab));
3622 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3623 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3624 }
3625 }
3626
3627 else {
3628 /* If we are not emitting relocations for a
3629 general dynamic reference, then we must be in a
3630 static link or an executable link with the
3631 symbol binding locally. Mark it as belonging
3632 to module 1, the executable. */
3633 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3634 htab->elf.sgot->contents + off );
3635 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3636 relocation - dtpoff_base (info),
3637 htab->elf.sgot->contents + off +
3638 TILEGX_ELF_WORD_BYTES (htab));
3639 }
3640 break;
3641 }
3642 }
3643
3644 if (off >= (bfd_vma) -2)
3645 abort ();
3646
3647 relocation = off - got_base;
3648 unresolved_reloc = false;
3649 howto = tilegx_elf_howto_table + r_type;
3650 break;
3651
3652 default:
3653 break;
3654 }
3655
3656 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3657 because such sections are not SEC_ALLOC and thus ld.so will
3658 not process them. */
3659 if (unresolved_reloc
3660 && !((input_section->flags & SEC_DEBUGGING) != 0
3661 && h->def_dynamic)
3662 && _bfd_elf_section_offset (output_bfd, info, input_section,
3663 rel->r_offset) != (bfd_vma) -1)
3664 _bfd_error_handler
3665 /* xgettext:c-format */
3666 (_("%pB(%pA+%#" PRIx64 "): "
3667 "unresolvable %s relocation against symbol `%s'"),
3668 input_bfd,
3669 input_section,
3670 (uint64_t) rel->r_offset,
3671 howto->name,
3672 h->root.root.string);
3673
3674 r = bfd_reloc_continue;
3675
3676 /* Get the operand creation function, if any. */
3677 create_func = reloc_to_create_func[r_type];
3678 if (create_func == NULL)
3679 {
3680 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3681 contents, rel->r_offset,
3682 relocation, rel->r_addend);
3683 }
3684 else
3685 {
3686 if (howto->pc_relative)
3687 {
3688 relocation -=
3689 input_section->output_section->vma + input_section->output_offset;
3690 if (howto->pcrel_offset)
3691 relocation -= rel->r_offset;
3692 }
3693
3694 bfd_byte *data;
3695
3696 /* Add the relocation addend if any to the final target value */
3697 relocation += rel->r_addend;
3698
3699 /* Do basic range checking */
3700 r = bfd_check_overflow (howto->complain_on_overflow,
3701 howto->bitsize,
3702 howto->rightshift,
3703 TILEGX_ELF_WORD_BYTES (htab) * 8,
3704 relocation);
3705
3706 /*
3707 * Write the relocated value out into the raw section data.
3708 * Don't put a relocation out in the .rela section.
3709 */
3710 tilegx_bundle_bits mask = create_func(-1);
3711 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
3712
3713 /* Only touch bytes while the mask is not 0, so we
3714 don't write to out of bounds memory if this is actually
3715 a 16-bit switch instruction. */
3716 for (data = contents + rel->r_offset; mask != 0; data++)
3717 {
3718 bfd_byte byte_mask = (bfd_byte)mask;
3719 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3720 mask >>= 8;
3721 value >>= 8;
3722 }
3723 }
3724
3725 if (r != bfd_reloc_ok)
3726 {
3727 const char *msg = NULL;
3728
3729 switch (r)
3730 {
3731 case bfd_reloc_overflow:
3732 (*info->callbacks->reloc_overflow)
3733 (info, (h ? &h->root : NULL), name, howto->name,
3734 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3735 break;
3736
3737 case bfd_reloc_undefined:
3738 (*info->callbacks->undefined_symbol)
3739 (info, name, input_bfd, input_section, rel->r_offset, true);
3740 break;
3741
3742 case bfd_reloc_outofrange:
3743 msg = _("internal error: out of range error");
3744 break;
3745
3746 case bfd_reloc_notsupported:
3747 msg = _("internal error: unsupported relocation error");
3748 break;
3749
3750 case bfd_reloc_dangerous:
3751 msg = _("internal error: dangerous relocation");
3752 break;
3753
3754 default:
3755 msg = _("internal error: unknown error");
3756 break;
3757 }
3758
3759 if (msg)
3760 (*info->callbacks->warning) (info, msg, name, input_bfd,
3761 input_section, rel->r_offset);
3762 }
3763 }
3764
3765 return true;
3766 }
3767
3768 /* Finish up dynamic symbol handling. We set the contents of various
3769 dynamic sections here. */
3770
3771 bool
3772 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
3773 struct bfd_link_info *info,
3774 struct elf_link_hash_entry *h,
3775 Elf_Internal_Sym *sym)
3776 {
3777 struct tilegx_elf_link_hash_table *htab;
3778
3779 htab = tilegx_elf_hash_table (info);
3780 BFD_ASSERT (htab != NULL);
3781
3782 if (h->plt.offset != (bfd_vma) -1)
3783 {
3784 asection *splt;
3785 asection *srela;
3786 asection *sgotplt;
3787 Elf_Internal_Rela rela;
3788 bfd_byte *loc;
3789 bfd_vma r_offset;
3790 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
3791
3792
3793 int rela_index;
3794
3795 /* This symbol has an entry in the PLT. Set it up. */
3796
3797 BFD_ASSERT (h->dynindx != -1);
3798
3799 splt = htab->elf.splt;
3800 srela = htab->elf.srelplt;
3801 sgotplt = htab->elf.sgotplt;
3802
3803 if (splt == NULL || srela == NULL)
3804 abort ();
3805
3806 /* Fill in the entry in the procedure linkage table. */
3807 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
3808 h->plt.offset, &r_offset);
3809
3810 /* Fill in the entry in the global offset table, which initially points
3811 to the beginning of the plt. */
3812 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3813 splt->output_section->vma + splt->output_offset,
3814 sgotplt->contents + r_offset);
3815
3816 /* Fill in the entry in the .rela.plt section. */
3817 rela.r_offset = (sgotplt->output_section->vma
3818 + sgotplt->output_offset
3819 + r_offset);
3820 rela.r_addend = 0;
3821 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
3822
3823 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
3824 bed->s->swap_reloca_out (output_bfd, &rela, loc);
3825
3826 if (!h->def_regular)
3827 {
3828 /* Mark the symbol as undefined, rather than as defined in
3829 the .plt section. Leave the value alone. */
3830 sym->st_shndx = SHN_UNDEF;
3831 /* If the symbol is weak, we do need to clear the value.
3832 Otherwise, the PLT entry would provide a definition for
3833 the symbol even if the symbol wasn't defined anywhere,
3834 and so the symbol would never be NULL. */
3835 if (!h->ref_regular_nonweak)
3836 sym->st_value = 0;
3837 }
3838 }
3839
3840 if (h->got.offset != (bfd_vma) -1
3841 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3842 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3843 {
3844 asection *sgot;
3845 asection *srela;
3846 Elf_Internal_Rela rela;
3847
3848 /* This symbol has an entry in the GOT. Set it up. */
3849
3850 sgot = htab->elf.sgot;
3851 srela = htab->elf.srelgot;
3852 BFD_ASSERT (sgot != NULL && srela != NULL);
3853
3854 rela.r_offset = (sgot->output_section->vma
3855 + sgot->output_offset
3856 + (h->got.offset &~ (bfd_vma) 1));
3857
3858 /* If this is a -Bsymbolic link, and the symbol is defined
3859 locally, we just want to emit a RELATIVE reloc. Likewise if
3860 the symbol was forced to be local because of a version file.
3861 The entry in the global offset table will already have been
3862 initialized in the relocate_section function. */
3863 if (bfd_link_pic (info)
3864 && (info->symbolic || h->dynindx == -1)
3865 && h->def_regular)
3866 {
3867 asection *sec = h->root.u.def.section;
3868 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3869 rela.r_addend = (h->root.u.def.value
3870 + sec->output_section->vma
3871 + sec->output_offset);
3872 }
3873 else
3874 {
3875 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
3876 rela.r_addend = 0;
3877 }
3878
3879 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3880 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
3881 tilegx_elf_append_rela (output_bfd, srela, &rela);
3882 }
3883
3884 if (h->needs_copy)
3885 {
3886 asection *s;
3887 Elf_Internal_Rela rela;
3888
3889 /* This symbols needs a copy reloc. Set it up. */
3890 BFD_ASSERT (h->dynindx != -1);
3891
3892 if (h->root.u.def.section == htab->elf.sdynrelro)
3893 s = htab->elf.sreldynrelro;
3894 else
3895 s = htab->elf.srelbss;
3896 BFD_ASSERT (s != NULL);
3897
3898 rela.r_offset = (h->root.u.def.value
3899 + h->root.u.def.section->output_section->vma
3900 + h->root.u.def.section->output_offset);
3901 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
3902 rela.r_addend = 0;
3903 tilegx_elf_append_rela (output_bfd, s, &rela);
3904 }
3905
3906 /* Mark some specially defined symbols as absolute. */
3907 if (h == htab->elf.hdynamic
3908 || (h == htab->elf.hgot || h == htab->elf.hplt))
3909 sym->st_shndx = SHN_ABS;
3910
3911 return true;
3912 }
3913
3914 /* Finish up the dynamic sections. */
3915
3916 static bool
3917 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
3918 bfd *dynobj, asection *sdyn,
3919 asection *splt ATTRIBUTE_UNUSED)
3920 {
3921 struct tilegx_elf_link_hash_table *htab;
3922 const struct elf_backend_data *bed;
3923 bfd_byte *dyncon, *dynconend;
3924 size_t dynsize;
3925
3926 htab = tilegx_elf_hash_table (info);
3927 BFD_ASSERT (htab != NULL);
3928 bed = get_elf_backend_data (output_bfd);
3929 dynsize = bed->s->sizeof_dyn;
3930 dynconend = sdyn->contents + sdyn->size;
3931
3932 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
3933 {
3934 Elf_Internal_Dyn dyn;
3935 asection *s;
3936
3937 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
3938
3939 switch (dyn.d_tag)
3940 {
3941 case DT_PLTGOT:
3942 s = htab->elf.sgotplt;
3943 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3944 break;
3945 case DT_JMPREL:
3946 s = htab->elf.srelplt;
3947 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3948 break;
3949 case DT_PLTRELSZ:
3950 s = htab->elf.srelplt;
3951 dyn.d_un.d_val = s->size;
3952 break;
3953 default:
3954 continue;
3955 }
3956
3957 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3958 }
3959 return true;
3960 }
3961
3962 bool
3963 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
3964 struct bfd_link_info *info)
3965 {
3966 bfd *dynobj;
3967 asection *sdyn;
3968 struct tilegx_elf_link_hash_table *htab;
3969 size_t pad_size;
3970
3971 htab = tilegx_elf_hash_table (info);
3972 BFD_ASSERT (htab != NULL);
3973 dynobj = htab->elf.dynobj;
3974
3975 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3976
3977 if (elf_hash_table (info)->dynamic_sections_created)
3978 {
3979 asection *splt;
3980 bool ret;
3981
3982 splt = htab->elf.splt;
3983 BFD_ASSERT (splt != NULL && sdyn != NULL);
3984
3985 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
3986
3987 if (!ret)
3988 return ret;
3989
3990 /* Fill in the head and tail entries in the procedure linkage table. */
3991 if (splt->size > 0)
3992 {
3993 memcpy (splt->contents,
3994 ABI_64_P (output_bfd) ?
3995 tilegx64_plt0_entry : tilegx32_plt0_entry,
3996 PLT_HEADER_SIZE);
3997
3998 memcpy (splt->contents + splt->size
3999 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE,
4000 ABI_64_P (output_bfd) ?
4001 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4002 PLT_TAIL_SIZE);
4003 /* Add padding so that the plt section is a multiple of its
4004 entry size. */
4005 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE;
4006 memset (splt->contents + splt->size - pad_size, 0, pad_size);
4007
4008 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4009 = PLT_ENTRY_SIZE;
4010 }
4011 }
4012
4013 if (htab->elf.sgotplt)
4014 {
4015 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4016 {
4017 _bfd_error_handler
4018 (_("discarded output section: `%pA'"), htab->elf.sgotplt);
4019 return false;
4020 }
4021
4022 if (htab->elf.sgotplt->size > 0)
4023 {
4024 /* Write the first two entries in .got.plt, needed for the dynamic
4025 linker. */
4026 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4027 htab->elf.sgotplt->contents);
4028 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4029 htab->elf.sgotplt->contents
4030 + GOT_ENTRY_SIZE (htab));
4031
4032 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4033 GOT_ENTRY_SIZE (htab);
4034 }
4035 }
4036
4037 if (htab->elf.sgot)
4038 {
4039 if (htab->elf.sgot->size > 0)
4040 {
4041 /* Set the first entry in the global offset table to the address of
4042 the dynamic section. */
4043 bfd_vma val = (sdyn ?
4044 sdyn->output_section->vma + sdyn->output_offset :
4045 0);
4046 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4047 htab->elf.sgot->contents);
4048
4049 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4050 GOT_ENTRY_SIZE (htab);
4051 }
4052 }
4053
4054 return true;
4055 }
4056
4057 \f
4058
4059 /* Return address for Ith PLT stub in section PLT, for relocation REL
4060 or (bfd_vma) -1 if it should not be included. */
4061
4062 bfd_vma
4063 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4064 const arelent *rel ATTRIBUTE_UNUSED)
4065 {
4066 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4067 }
4068
4069 enum elf_reloc_type_class
4070 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4071 const asection *rel_sec ATTRIBUTE_UNUSED,
4072 const Elf_Internal_Rela *rela)
4073 {
4074 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4075 {
4076 case R_TILEGX_RELATIVE:
4077 return reloc_class_relative;
4078 case R_TILEGX_JMP_SLOT:
4079 return reloc_class_plt;
4080 case R_TILEGX_COPY:
4081 return reloc_class_copy;
4082 default:
4083 return reloc_class_normal;
4084 }
4085 }
4086
4087 int
4088 tilegx_additional_program_headers (bfd *abfd,
4089 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4090 {
4091 /* Each .intrpt section specified by the user adds another PT_LOAD
4092 header since the sections are discontiguous. */
4093 static const char intrpt_sections[4][9] =
4094 {
4095 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4096 };
4097 int count = 0;
4098 int i;
4099
4100 for (i = 0; i < 4; i++)
4101 {
4102 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4103 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4104 ++count;
4105 }
4106
4107 /* Add four "padding" headers in to leave room in case a custom linker
4108 script does something fancy. Otherwise ld complains that it ran
4109 out of program headers and refuses to link. */
4110 count += 4;
4111
4112 return count;
4113 }
4114
4115
4116 bool
4117 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4118 {
4119 bfd *obfd = info->output_bfd;
4120 const char *targ1 = bfd_get_target (ibfd);
4121 const char *targ2 = bfd_get_target (obfd);
4122
4123 if (strcmp (targ1, targ2) != 0)
4124 {
4125 _bfd_error_handler
4126 /* xgettext:c-format */
4127 (_("%pB: cannot link together %s and %s objects"),
4128 ibfd, targ1, targ2);
4129 bfd_set_error (bfd_error_bad_value);
4130 return false;
4131 }
4132
4133 return true;
4134 }
The GNU Binutils are a collection of binary tools.