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ELF: Add _bfd_elf_add_dynamic_tags
[deliverable/binutils-gdb.git] / bfd / elfxx-tilegx.c
1 /* TILE-Gx-specific support for ELF.
2 Copyright (C) 2011-2020 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 3, /* size (0 = byte, 1 = short, 2 = long) */
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 4, /* size (0 = byte, 1 = short, 2 = long) */
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 2, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 0, /* size (0 = byte, 1 = short, 2 = long) */
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 4, /* size (0 = byte, 1 = short, 2 = long) */
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 2, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 0, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
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 (0 = byte, 1 = short, 2 = long) */
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 (0 = byte, 1 = short, 2 = long) */
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 (0 = byte, 1 = short, 2 = long) */
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 (0 = byte, 1 = short, 2 = long) */
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 2, /* size (0 = byte, 1 = short, 2 = long) */
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 2, /* size (0 = byte, 1 = short, 2 = long) */
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 2, /* size (0 = byte, 1 = short, 2 = long) */
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, 0, 8),
421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8),
422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8),
423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8),
424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8),
425
426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14),
427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14),
428
429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6),
430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6),
431
432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6),
433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6),
434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6),
435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6),
436
437 #define TILEGX_IMM16_HOWTO(name, rshift) \
438 HOWTO (name, rshift, 1, 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, 1, 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, 1, 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, 1, 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, 1, 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, 1, 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, 4, 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, 4, 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 2, /* size (0 = byte, 1 = short, 2 = long) */
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, 0, 8),
588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8),
589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8),
590 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8),
591 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8),
592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8),
593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8),
594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8),
595 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 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 4, /* size (0 = byte, 1 = short, 2 = long) */
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 4, /* size (0 = byte, 1 = short, 2 = long) */
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 bfd_boolean disable_le_transition;
838
839 /* Small local sym to section mapping cache. */
840 struct sym_cache sym_cache;
841 };
842
843
844 /* Get the Tile ELF linker hash table from a link_info structure. */
845 #define tilegx_elf_hash_table(p) \
846 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
847 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL)
848
849 #ifdef BFD64
850 static bfd_vma
851 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
852 bfd_vma rel_index,
853 bfd_vma type)
854 {
855 return ELF64_R_INFO (rel_index, type);
856 }
857
858 static bfd_vma
859 tilegx_elf_r_symndx_64 (bfd_vma r_info)
860 {
861 return ELF64_R_SYM (r_info);
862 }
863
864 static void
865 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
866 {
867 bfd_put_64 (abfd, val, ptr);
868 }
869 #endif /* BFD64 */
870
871 static bfd_vma
872 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
873 bfd_vma rel_index,
874 bfd_vma type)
875 {
876 return ELF32_R_INFO (rel_index, type);
877 }
878
879 static bfd_vma
880 tilegx_elf_r_symndx_32 (bfd_vma r_info)
881 {
882 return ELF32_R_SYM (r_info);
883 }
884
885 static void
886 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
887 {
888 bfd_put_32 (abfd, val, ptr);
889 }
890
891 reloc_howto_type *
892 tilegx_reloc_type_lookup (bfd * abfd,
893 bfd_reloc_code_real_type code)
894 {
895 unsigned int i;
896
897 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;)
898 {
899 const reloc_map * entry;
900
901 entry = tilegx_reloc_map + i;
902
903 if (entry->bfd_reloc_val == code)
904 return entry->table + (entry->tilegx_reloc_val
905 - entry->table[0].type);
906 }
907
908 /* xgettext:c-format */
909 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
910 abfd, (int) code);
911 bfd_set_error (bfd_error_bad_value);
912 return NULL;
913 }
914
915 reloc_howto_type *
916 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
917 const char *r_name)
918 {
919 unsigned int i;
920
921 for (i = 0;
922 i < (sizeof (tilegx_elf_howto_table)
923 / sizeof (tilegx_elf_howto_table[0]));
924 i++)
925 if (tilegx_elf_howto_table[i].name != NULL
926 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
927 return &tilegx_elf_howto_table[i];
928
929 return NULL;
930 }
931
932 bfd_boolean
933 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
934 arelent *cache_ptr,
935 Elf_Internal_Rela *dst)
936 {
937 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
938
939 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
940 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
941 else if (r_type - R_TILEGX_GNU_VTINHERIT
942 <= ((unsigned int) R_TILEGX_GNU_VTENTRY
943 - (unsigned int) R_TILEGX_GNU_VTINHERIT))
944 cache_ptr->howto
945 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
946 else
947 {
948 /* xgettext:c-format */
949 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
950 abfd, r_type);
951 bfd_set_error (bfd_error_bad_value);
952 return FALSE;
953 }
954 return TRUE;
955 }
956
957 typedef tilegx_bundle_bits (*tilegx_create_func)(int);
958
959 static const tilegx_create_func reloc_to_create_func[] =
960 {
961 /* The first twenty relocation types don't correspond to operands */
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 NULL,
981 NULL,
982
983 /* The remaining relocations are used for immediate operands */
984 create_BrOff_X1,
985 create_JumpOff_X1,
986 create_JumpOff_X1,
987 create_Imm8_X0,
988 create_Imm8_Y0,
989 create_Imm8_X1,
990 create_Imm8_Y1,
991 create_Dest_Imm8_X1,
992 create_MT_Imm14_X1,
993 create_MF_Imm14_X1,
994 create_BFStart_X0,
995 create_BFEnd_X0,
996 create_ShAmt_X0,
997 create_ShAmt_X1,
998 create_ShAmt_Y0,
999 create_ShAmt_Y1,
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 create_Imm16_X0,
1053 create_Imm16_X1,
1054 NULL,
1055 NULL,
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 create_Imm16_X0,
1067 create_Imm16_X1,
1068 };
1069
1070 static void
1071 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
1072 {
1073 const struct elf_backend_data *bed;
1074 bfd_byte *loc;
1075
1076 bed = get_elf_backend_data (abfd);
1077 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
1078 bed->s->swap_reloca_out (abfd, rel, loc);
1079 }
1080
1081 /* PLT/GOT stuff */
1082
1083 /* The procedure linkage table starts with the following header:
1084
1085 ld_add r28, r27, 8
1086 ld r27, r27
1087 {
1088 jr r27
1089 info 10 ## SP not offset, return PC in LR
1090 }
1091
1092 Subsequent entries are the following, jumping to the header at the end:
1093
1094 {
1095 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET>
1096 lnk r26
1097 }
1098 1:
1099 {
1100 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1101 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1102 }
1103 {
1104 add r28, r26, r28
1105 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1106 }
1107 {
1108 add r27, r26, r27
1109 ld r28, r28
1110 info 10 ## SP not offset, return PC in LR
1111 }
1112 {
1113 shl16insli r29, zero, MY_PLT_INDEX
1114 jr r28
1115 }
1116
1117 This code sequence lets the code at at the start of the PLT determine
1118 which PLT entry was executed by examining 'r29'.
1119
1120 Note that MY_PLT_INDEX skips over the header entries, so the first
1121 actual jump table entry has index zero.
1122
1123 If the offset fits in 16 bits,
1124
1125 lnk r26
1126 1:
1127 {
1128 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1129 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1130 }
1131 {
1132 shl16insli r29, zero, MY_PLT_INDEX
1133 ld r28, r28
1134 }
1135 {
1136 add r27, r26, r27
1137 jr r28
1138 }
1139 info 10 ## SP not offset, return PC in LR
1140
1141 For the purpose of backtracing, the procedure linkage table ends with the
1142 following tail entry:
1143
1144 info 10 ## SP not offset, return PC in LR
1145
1146 The 32-bit versions are similar, with ld4s replacing ld, and offsets into
1147 the GOT being multiples of 4 instead of 8.
1148
1149 */
1150
1151 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1152 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1153 #define PLT_TAIL_SIZE_IN_BUNDLES 1
1154
1155 #define PLT_HEADER_SIZE \
1156 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1157 #define PLT_ENTRY_SIZE \
1158 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1159 #define PLT_TAIL_SIZE \
1160 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1161
1162 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab)
1163
1164 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab))
1165
1166 static const bfd_byte
1167 tilegx64_plt0_entry[PLT_HEADER_SIZE] =
1168 {
1169 0x00, 0x30, 0x48, 0x51,
1170 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */
1171 0x00, 0x30, 0xbc, 0x35,
1172 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */
1173 0xff, 0xaf, 0x30, 0x40,
1174 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1175 };
1176
1177 static const bfd_byte
1178 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] =
1179 {
1180 0xdc, 0x0f, 0x00, 0x10,
1181 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1182 0xdb, 0x0f, 0x00, 0x10,
1183 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1184 0x9c, 0xc6, 0x0d, 0xd0,
1185 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1186 0x9b, 0xb6, 0xc5, 0xad,
1187 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1188 0xdd, 0x0f, 0x00, 0x70,
1189 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1190 };
1191
1192 static const bfd_byte
1193 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] =
1194 {
1195 0x00, 0x30, 0x48, 0x51,
1196 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1197 0x9c, 0x06, 0x00, 0x90,
1198 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1199 0xdd, 0x0f, 0x00, 0x70,
1200 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */
1201 0x9b, 0xb6, 0x0d, 0x50,
1202 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1203 0x00, 0x30, 0x48, 0xd1,
1204 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1205 };
1206
1207 /* Reuse an existing info 10 bundle. */
1208 static const bfd_byte *const tilegx64_plt_tail_entry =
1209 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1210
1211 static const bfd_byte
1212 tilegx32_plt0_entry[PLT_HEADER_SIZE] =
1213 {
1214 0x00, 0x30, 0x48, 0x51,
1215 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */
1216 0x00, 0x30, 0xbc, 0x35,
1217 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */
1218 0xff, 0xaf, 0x30, 0x40,
1219 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1220 };
1221
1222 static const bfd_byte
1223 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] =
1224 {
1225 0xdc, 0x0f, 0x00, 0x10,
1226 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1227 0xdb, 0x0f, 0x00, 0x10,
1228 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1229 0x9c, 0xc6, 0x0d, 0xd0,
1230 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1231 0x9b, 0xb6, 0xc5, 0xad,
1232 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */
1233 0xdd, 0x0f, 0x00, 0x70,
1234 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1235 };
1236
1237 static const bfd_byte
1238 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] =
1239 {
1240 0x00, 0x30, 0x48, 0x51,
1241 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1242 0x9c, 0x06, 0x00, 0x90,
1243 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1244 0xdd, 0x0f, 0x00, 0x70,
1245 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */
1246 0x9b, 0xb6, 0x0d, 0x50,
1247 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1248 0x00, 0x30, 0x48, 0xd1,
1249 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1250 };
1251
1252 /* Reuse an existing info 10 bundle. */
1253 static const bfd_byte *const tilegx32_plt_tail_entry =
1254 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1255
1256 static int
1257 tilegx_plt_entry_build (bfd *output_bfd,
1258 struct tilegx_elf_link_hash_table *htab,
1259 asection *splt, asection *sgotplt,
1260 bfd_vma offset, bfd_vma *r_offset)
1261 {
1262 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
1263 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab)
1264 + GOTPLT_HEADER_SIZE (htab));
1265 tilegx_bundle_bits *pc;
1266
1267 /* Compute the distance from the got entry to the lnk. */
1268 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1269 + sgotplt->output_offset
1270 + got_offset
1271 - splt->output_section->vma
1272 - splt->output_offset
1273 - offset
1274 - TILEGX_BUNDLE_SIZE_IN_BYTES;
1275
1276 /* Compute the distance to GOTPLT[0]. */
1277 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1278
1279 /* Check whether we can use the short plt entry with 16-bit offset. */
1280 bfd_boolean short_plt_entry =
1281 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1282
1283 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *)
1284 (ABI_64_P (output_bfd) ?
1285 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) :
1286 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry));
1287
1288 /* Copy the plt entry template. */
1289 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE);
1290
1291 /* Write the immediate offsets. */
1292 pc = (tilegx_bundle_bits *)(splt->contents + offset);
1293
1294 if (short_plt_entry)
1295 {
1296 /* { lnk r28 } */
1297 pc++;
1298
1299 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */
1300 *pc++ |= create_Imm16_X0 (dist_got_entry)
1301 | create_Imm16_X1 (dist_got0);
1302
1303 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */
1304 *pc++ |= create_Imm16_X0 (plt_index);
1305 }
1306 else
1307 {
1308 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */
1309 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16);
1310
1311 /* { moveli r27, &GOTPLT[0] ;
1312 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */
1313 *pc++ |= create_Imm16_X0 (dist_got0 >> 16)
1314 | create_Imm16_X1 (dist_got_entry);
1315
1316 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */
1317 *pc++ |= create_Imm16_X1 (dist_got0);
1318
1319 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1320 pc++;
1321
1322 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */
1323 *pc++ |= create_Imm16_X0 (plt_index);
1324 }
1325
1326 /* Set the relocation offset. */
1327 *r_offset = got_offset;
1328
1329 return plt_index;
1330 }
1331
1332 /* Create an entry in an TILEGX ELF linker hash table. */
1333
1334 static struct bfd_hash_entry *
1335 link_hash_newfunc (struct bfd_hash_entry *entry,
1336 struct bfd_hash_table *table, const char *string)
1337 {
1338 /* Allocate the structure if it has not already been allocated by a
1339 subclass. */
1340 if (entry == NULL)
1341 {
1342 entry =
1343 bfd_hash_allocate (table,
1344 sizeof (struct tilegx_elf_link_hash_entry));
1345 if (entry == NULL)
1346 return entry;
1347 }
1348
1349 /* Call the allocation method of the superclass. */
1350 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1351 if (entry != NULL)
1352 {
1353 struct tilegx_elf_link_hash_entry *eh;
1354
1355 eh = (struct tilegx_elf_link_hash_entry *) entry;
1356 eh->tls_type = GOT_UNKNOWN;
1357 }
1358
1359 return entry;
1360 }
1361
1362 /* Create a TILEGX ELF linker hash table. */
1363
1364 struct bfd_link_hash_table *
1365 tilegx_elf_link_hash_table_create (bfd *abfd)
1366 {
1367 struct tilegx_elf_link_hash_table *ret;
1368 size_t amt = sizeof (struct tilegx_elf_link_hash_table);
1369
1370 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1371 if (ret == NULL)
1372 return NULL;
1373
1374 #ifdef BFD64
1375 if (ABI_64_P (abfd))
1376 {
1377 ret->bytes_per_word = 8;
1378 ret->word_align_power = 3;
1379 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1380 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1381 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1382 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1383 ret->r_info = tilegx_elf_r_info_64;
1384 ret->r_symndx = tilegx_elf_r_symndx_64;
1385 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1386 ret->put_word = tilegx_put_word_64;
1387 }
1388 else
1389 #endif
1390 {
1391 ret->bytes_per_word = 4;
1392 ret->word_align_power = 2;
1393 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1394 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1395 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1396 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1397 ret->r_info = tilegx_elf_r_info_32;
1398 ret->r_symndx = tilegx_elf_r_symndx_32;
1399 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1400 ret->put_word = tilegx_put_word_32;
1401 }
1402
1403 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1404 sizeof (struct tilegx_elf_link_hash_entry),
1405 TILEGX_ELF_DATA))
1406 {
1407 free (ret);
1408 return NULL;
1409 }
1410
1411 return &ret->elf.root;
1412 }
1413
1414 /* Create the .got section. */
1415
1416 static bfd_boolean
1417 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1418 {
1419 flagword flags;
1420 asection *s, *s_got;
1421 struct elf_link_hash_entry *h;
1422 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1423 struct elf_link_hash_table *htab = elf_hash_table (info);
1424
1425 /* This function may be called more than once. */
1426 if (htab->sgot != NULL)
1427 return TRUE;
1428
1429 flags = bed->dynamic_sec_flags;
1430
1431 s = bfd_make_section_anyway_with_flags (abfd,
1432 (bed->rela_plts_and_copies_p
1433 ? ".rela.got" : ".rel.got"),
1434 (bed->dynamic_sec_flags
1435 | SEC_READONLY));
1436 if (s == NULL
1437 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1438 return FALSE;
1439 htab->srelgot = s;
1440
1441 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
1442 if (s == NULL
1443 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1444 return FALSE;
1445 htab->sgot = s;
1446
1447 /* The first bit of the global offset table is the header. */
1448 s->size += bed->got_header_size;
1449
1450 if (bed->want_got_plt)
1451 {
1452 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
1453 if (s == NULL
1454 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1455 return FALSE;
1456 htab->sgotplt = s;
1457
1458 /* Reserve room for the header. */
1459 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1460 }
1461
1462 if (bed->want_got_sym)
1463 {
1464 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1465 section. We don't do this in the linker script because we don't want
1466 to define the symbol if we are not creating a global offset
1467 table. */
1468 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1469 "_GLOBAL_OFFSET_TABLE_");
1470 elf_hash_table (info)->hgot = h;
1471 if (h == NULL)
1472 return FALSE;
1473 }
1474
1475 return TRUE;
1476 }
1477
1478 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1479 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1480 hash table. */
1481
1482 bfd_boolean
1483 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1484 struct bfd_link_info *info)
1485 {
1486 if (!tilegx_elf_create_got_section (dynobj, info))
1487 return FALSE;
1488
1489 return _bfd_elf_create_dynamic_sections (dynobj, info);
1490 }
1491
1492 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1493
1494 void
1495 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1496 struct elf_link_hash_entry *dir,
1497 struct elf_link_hash_entry *ind)
1498 {
1499 struct tilegx_elf_link_hash_entry *edir, *eind;
1500
1501 edir = (struct tilegx_elf_link_hash_entry *) dir;
1502 eind = (struct tilegx_elf_link_hash_entry *) ind;
1503
1504 if (ind->root.type == bfd_link_hash_indirect
1505 && dir->got.refcount <= 0)
1506 {
1507 edir->tls_type = eind->tls_type;
1508 eind->tls_type = GOT_UNKNOWN;
1509 }
1510 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1511 }
1512
1513 static int
1514 tilegx_tls_translate_to_le (int r_type)
1515 {
1516 switch (r_type)
1517 {
1518 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1519 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1520 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1521
1522 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1523 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1524 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1525
1526 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1527 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1528 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1529
1530 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1531 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1532 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1533
1534 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1535 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1536 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1537
1538 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1539 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1540 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1541 }
1542 return r_type;
1543 }
1544
1545 static int
1546 tilegx_tls_translate_to_ie (int r_type)
1547 {
1548 switch (r_type)
1549 {
1550 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1551 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1552 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1553
1554 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1555 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1556 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1557
1558 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1559 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1560 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1561
1562 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1563 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1564 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1565
1566 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1567 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1568 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1569
1570 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1571 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1572 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1573 }
1574 return r_type;
1575 }
1576
1577 static int
1578 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1579 int is_local, bfd_boolean disable_le_transition)
1580 {
1581 if (!bfd_link_executable (info))
1582 return r_type;
1583
1584 if (is_local && !disable_le_transition)
1585 return tilegx_tls_translate_to_le (r_type);
1586 else
1587 return tilegx_tls_translate_to_ie (r_type);
1588 }
1589
1590 /* Look through the relocs for a section during the first phase, and
1591 allocate space in the global offset table or procedure linkage
1592 table. */
1593
1594 bfd_boolean
1595 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1596 asection *sec, const Elf_Internal_Rela *relocs)
1597 {
1598 struct tilegx_elf_link_hash_table *htab;
1599 Elf_Internal_Shdr *symtab_hdr;
1600 struct elf_link_hash_entry **sym_hashes;
1601 const Elf_Internal_Rela *rel;
1602 const Elf_Internal_Rela *rel_end;
1603 asection *sreloc;
1604 int num_relocs;
1605 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE;
1606
1607 if (bfd_link_relocatable (info))
1608 return TRUE;
1609
1610 htab = tilegx_elf_hash_table (info);
1611 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1612 sym_hashes = elf_sym_hashes (abfd);
1613
1614 sreloc = NULL;
1615
1616 num_relocs = sec->reloc_count;
1617
1618 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1619
1620 if (htab->elf.dynobj == NULL)
1621 htab->elf.dynobj = abfd;
1622
1623 rel_end = relocs + num_relocs;
1624
1625 /* Check whether to do optimization to transform TLS GD/IE
1626 referehces to TLS LE. We disable it if we're linking with old
1627 TLS code sequences that do not support such optimization. Old
1628 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1629 no tls_add relocations. */
1630 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1631 {
1632 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1633 switch (r_type)
1634 {
1635 case R_TILEGX_TLS_GD_CALL:
1636 case R_TILEGX_TLS_IE_LOAD:
1637 has_tls_gd_or_ie = TRUE;
1638 break;
1639 case R_TILEGX_IMM8_X0_TLS_ADD:
1640 case R_TILEGX_IMM8_Y0_TLS_ADD:
1641 case R_TILEGX_IMM8_X1_TLS_ADD:
1642 case R_TILEGX_IMM8_Y1_TLS_ADD:
1643 has_tls_add = TRUE;
1644 break;
1645 }
1646 }
1647
1648 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1649 htab->disable_le_transition |= sec->sec_flg0;
1650
1651 for (rel = relocs; rel < rel_end; rel++)
1652 {
1653 unsigned int r_type;
1654 unsigned int r_symndx;
1655 struct elf_link_hash_entry *h;
1656 int tls_type;
1657
1658 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1659 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1660
1661 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1662 {
1663 /* xgettext:c-format */
1664 _bfd_error_handler (_("%pB: bad symbol index: %d"),
1665 abfd, r_symndx);
1666 return FALSE;
1667 }
1668
1669 if (r_symndx < symtab_hdr->sh_info)
1670 h = NULL;
1671 else
1672 {
1673 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1674 while (h->root.type == bfd_link_hash_indirect
1675 || h->root.type == bfd_link_hash_warning)
1676 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1677 }
1678
1679 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1680 sec->sec_flg0);
1681 switch (r_type)
1682 {
1683 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1684 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1685 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1686 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1687 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1688 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1689 if (!bfd_link_executable (info))
1690 goto r_tilegx_plt32;
1691 break;
1692
1693 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1694 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1695 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1696 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1697 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1698 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1699 BFD_ASSERT (bfd_link_pic (info));
1700 tls_type = GOT_TLS_GD;
1701 goto have_got_reference;
1702
1703 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1704 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1705 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1706 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1707 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1708 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1709 tls_type = GOT_TLS_IE;
1710 if (!bfd_link_executable (info))
1711 info->flags |= DF_STATIC_TLS;
1712 goto have_got_reference;
1713
1714 case R_TILEGX_IMM16_X0_HW0_GOT:
1715 case R_TILEGX_IMM16_X1_HW0_GOT:
1716 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1717 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1718 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1719 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1720 tls_type = GOT_NORMAL;
1721 /* Fall Through */
1722
1723 have_got_reference:
1724 /* This symbol requires a global offset table entry. */
1725 {
1726 int old_tls_type;
1727
1728 if (h != NULL)
1729 {
1730 h->got.refcount += 1;
1731 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1732 }
1733 else
1734 {
1735 bfd_signed_vma *local_got_refcounts;
1736
1737 /* This is a global offset table entry for a local symbol. */
1738 local_got_refcounts = elf_local_got_refcounts (abfd);
1739 if (local_got_refcounts == NULL)
1740 {
1741 bfd_size_type size;
1742
1743 size = symtab_hdr->sh_info;
1744 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1745 local_got_refcounts = ((bfd_signed_vma *)
1746 bfd_zalloc (abfd, size));
1747 if (local_got_refcounts == NULL)
1748 return FALSE;
1749 elf_local_got_refcounts (abfd) = local_got_refcounts;
1750 _bfd_tilegx_elf_local_got_tls_type (abfd)
1751 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1752 }
1753 local_got_refcounts[r_symndx] += 1;
1754 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1755 }
1756
1757 /* If a TLS symbol is accessed using IE at least once,
1758 there is no point to use dynamic model for it. */
1759 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1760 && (old_tls_type != GOT_TLS_GD
1761 || tls_type != GOT_TLS_IE))
1762 {
1763 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1764 tls_type = old_tls_type;
1765 else
1766 {
1767 _bfd_error_handler
1768 /* xgettext:c-format */
1769 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1770 abfd, h ? h->root.root.string : "<local>");
1771 return FALSE;
1772 }
1773 }
1774
1775 if (old_tls_type != tls_type)
1776 {
1777 if (h != NULL)
1778 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1779 else
1780 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1781 }
1782 }
1783
1784 if (htab->elf.sgot == NULL)
1785 {
1786 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1787 return FALSE;
1788 }
1789 break;
1790
1791 case R_TILEGX_TLS_GD_CALL:
1792 if (!bfd_link_executable (info))
1793 {
1794 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1795 against __tls_get_addr. */
1796 struct bfd_link_hash_entry *bh = NULL;
1797 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1798 "__tls_get_addr", 0,
1799 bfd_und_section_ptr, 0,
1800 NULL, FALSE, FALSE,
1801 &bh))
1802 return FALSE;
1803 h = (struct elf_link_hash_entry *) bh;
1804 }
1805 else
1806 break;
1807 /* Fall through */
1808
1809 case R_TILEGX_JUMPOFF_X1_PLT:
1810 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
1811 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
1812 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
1813 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
1814 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
1815 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
1816 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
1817 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
1818 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
1819 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
1820 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
1821 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
1822 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
1823 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
1824 /* This symbol requires a procedure linkage table entry. We
1825 actually build the entry in adjust_dynamic_symbol,
1826 because this might be a case of linking PIC code without
1827 linking in any dynamic objects, in which case we don't
1828 need to generate a procedure linkage table after all. */
1829
1830 if (h != NULL)
1831 {
1832 h->needs_plt = 1;
1833 h->plt.refcount += 1;
1834 }
1835 break;
1836
1837 case R_TILEGX_64_PCREL:
1838 case R_TILEGX_32_PCREL:
1839 case R_TILEGX_16_PCREL:
1840 case R_TILEGX_8_PCREL:
1841 case R_TILEGX_IMM16_X0_HW0_PCREL:
1842 case R_TILEGX_IMM16_X1_HW0_PCREL:
1843 case R_TILEGX_IMM16_X0_HW1_PCREL:
1844 case R_TILEGX_IMM16_X1_HW1_PCREL:
1845 case R_TILEGX_IMM16_X0_HW2_PCREL:
1846 case R_TILEGX_IMM16_X1_HW2_PCREL:
1847 case R_TILEGX_IMM16_X0_HW3_PCREL:
1848 case R_TILEGX_IMM16_X1_HW3_PCREL:
1849 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1850 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1851 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1852 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1853 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1854 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1855 if (h != NULL)
1856 h->non_got_ref = 1;
1857
1858 if (h != NULL
1859 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1860 break;
1861 /* Fall through. */
1862
1863 case R_TILEGX_64:
1864 case R_TILEGX_32:
1865 case R_TILEGX_16:
1866 case R_TILEGX_8:
1867 case R_TILEGX_HW0:
1868 case R_TILEGX_HW1:
1869 case R_TILEGX_HW2:
1870 case R_TILEGX_HW3:
1871 case R_TILEGX_HW0_LAST:
1872 case R_TILEGX_HW1_LAST:
1873 case R_TILEGX_HW2_LAST:
1874 case R_TILEGX_COPY:
1875 case R_TILEGX_GLOB_DAT:
1876 case R_TILEGX_JMP_SLOT:
1877 case R_TILEGX_RELATIVE:
1878 case R_TILEGX_BROFF_X1:
1879 case R_TILEGX_JUMPOFF_X1:
1880 case R_TILEGX_IMM8_X0:
1881 case R_TILEGX_IMM8_Y0:
1882 case R_TILEGX_IMM8_X1:
1883 case R_TILEGX_IMM8_Y1:
1884 case R_TILEGX_DEST_IMM8_X1:
1885 case R_TILEGX_MT_IMM14_X1:
1886 case R_TILEGX_MF_IMM14_X1:
1887 case R_TILEGX_MMSTART_X0:
1888 case R_TILEGX_MMEND_X0:
1889 case R_TILEGX_SHAMT_X0:
1890 case R_TILEGX_SHAMT_X1:
1891 case R_TILEGX_SHAMT_Y0:
1892 case R_TILEGX_SHAMT_Y1:
1893 case R_TILEGX_IMM16_X0_HW0:
1894 case R_TILEGX_IMM16_X1_HW0:
1895 case R_TILEGX_IMM16_X0_HW1:
1896 case R_TILEGX_IMM16_X1_HW1:
1897 case R_TILEGX_IMM16_X0_HW2:
1898 case R_TILEGX_IMM16_X1_HW2:
1899 case R_TILEGX_IMM16_X0_HW3:
1900 case R_TILEGX_IMM16_X1_HW3:
1901 case R_TILEGX_IMM16_X0_HW0_LAST:
1902 case R_TILEGX_IMM16_X1_HW0_LAST:
1903 case R_TILEGX_IMM16_X0_HW1_LAST:
1904 case R_TILEGX_IMM16_X1_HW1_LAST:
1905 case R_TILEGX_IMM16_X0_HW2_LAST:
1906 case R_TILEGX_IMM16_X1_HW2_LAST:
1907 if (h != NULL)
1908 h->non_got_ref = 1;
1909
1910 r_tilegx_plt32:
1911 if (h != NULL && !bfd_link_pic (info))
1912 {
1913 /* We may need a .plt entry if the function this reloc
1914 refers to is in a shared lib. */
1915 h->plt.refcount += 1;
1916 }
1917
1918 /* If we are creating a shared library, and this is a reloc
1919 against a global symbol, or a non PC relative reloc
1920 against a local symbol, then we need to copy the reloc
1921 into the shared library. However, if we are linking with
1922 -Bsymbolic, we do not need to copy a reloc against a
1923 global symbol which is defined in an object we are
1924 including in the link (i.e., DEF_REGULAR is set). At
1925 this point we have not seen all the input files, so it is
1926 possible that DEF_REGULAR is not set now but will be set
1927 later (it is never cleared). In case of a weak definition,
1928 DEF_REGULAR may be cleared later by a strong definition in
1929 a shared library. We account for that possibility below by
1930 storing information in the relocs_copied field of the hash
1931 table entry. A similar situation occurs when creating
1932 shared libraries and symbol visibility changes render the
1933 symbol local.
1934
1935 If on the other hand, we are creating an executable, we
1936 may need to keep relocations for symbols satisfied by a
1937 dynamic library if we manage to avoid copy relocs for the
1938 symbol. */
1939 if ((bfd_link_pic (info)
1940 && (sec->flags & SEC_ALLOC) != 0
1941 && (! tilegx_elf_howto_table[r_type].pc_relative
1942 || (h != NULL
1943 && (! info->symbolic
1944 || h->root.type == bfd_link_hash_defweak
1945 || !h->def_regular))))
1946 || (!bfd_link_pic (info)
1947 && (sec->flags & SEC_ALLOC) != 0
1948 && h != NULL
1949 && (h->root.type == bfd_link_hash_defweak
1950 || !h->def_regular)))
1951 {
1952 struct elf_dyn_relocs *p;
1953 struct elf_dyn_relocs **head;
1954
1955 /* When creating a shared object, we must copy these
1956 relocs into the output file. We create a reloc
1957 section in dynobj and make room for the reloc. */
1958 if (sreloc == NULL)
1959 {
1960 sreloc = _bfd_elf_make_dynamic_reloc_section
1961 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
1962 /*rela?*/ TRUE);
1963
1964 if (sreloc == NULL)
1965 return FALSE;
1966 }
1967
1968 /* If this is a global symbol, we count the number of
1969 relocations we need for this symbol. */
1970 if (h != NULL)
1971 head = &h->dyn_relocs;
1972 else
1973 {
1974 /* Track dynamic relocs needed for local syms too.
1975 We really need local syms available to do this
1976 easily. Oh well. */
1977
1978 asection *s;
1979 void *vpp;
1980 Elf_Internal_Sym *isym;
1981
1982 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1983 abfd, r_symndx);
1984 if (isym == NULL)
1985 return FALSE;
1986
1987 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1988 if (s == NULL)
1989 s = sec;
1990
1991 vpp = &elf_section_data (s)->local_dynrel;
1992 head = (struct elf_dyn_relocs **) vpp;
1993 }
1994
1995 p = *head;
1996 if (p == NULL || p->sec != sec)
1997 {
1998 size_t amt = sizeof *p;
1999 p = ((struct elf_dyn_relocs *)
2000 bfd_alloc (htab->elf.dynobj, amt));
2001 if (p == NULL)
2002 return FALSE;
2003 p->next = *head;
2004 *head = p;
2005 p->sec = sec;
2006 p->count = 0;
2007 p->pc_count = 0;
2008 }
2009
2010 p->count += 1;
2011 if (tilegx_elf_howto_table[r_type].pc_relative)
2012 p->pc_count += 1;
2013 }
2014
2015 break;
2016
2017 case R_TILEGX_GNU_VTINHERIT:
2018 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2019 return FALSE;
2020 break;
2021
2022 case R_TILEGX_GNU_VTENTRY:
2023 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2024 return FALSE;
2025 break;
2026
2027 default:
2028 break;
2029 }
2030 }
2031
2032 return TRUE;
2033 }
2034
2035 \f
2036 asection *
2037 tilegx_elf_gc_mark_hook (asection *sec,
2038 struct bfd_link_info *info,
2039 Elf_Internal_Rela *rel,
2040 struct elf_link_hash_entry *h,
2041 Elf_Internal_Sym *sym)
2042 {
2043 if (h != NULL)
2044 {
2045 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2046 {
2047 case R_TILEGX_GNU_VTINHERIT:
2048 case R_TILEGX_GNU_VTENTRY:
2049 return NULL;
2050 }
2051 }
2052
2053 /* FIXME: The test here, in check_relocs and in relocate_section
2054 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
2055 if (bfd_link_pic (info))
2056 {
2057 struct bfd_link_hash_entry *bh;
2058
2059 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2060 {
2061 case R_TILEGX_TLS_GD_CALL:
2062 /* This reloc implicitly references __tls_get_addr. We know
2063 another reloc will reference the same symbol as the one
2064 on this reloc, so the real symbol and section will be
2065 gc marked when processing the other reloc. That lets
2066 us handle __tls_get_addr here. */
2067 bh = NULL;
2068 if (! _bfd_generic_link_add_one_symbol (info, sec->owner,
2069 "__tls_get_addr", 0,
2070 bfd_und_section_ptr,
2071 0, NULL, FALSE,
2072 FALSE, &bh))
2073 return NULL;
2074 h = (struct elf_link_hash_entry *) bh;
2075 BFD_ASSERT (h != NULL);
2076 h->mark = 1;
2077 if (h->is_weakalias)
2078 weakdef (h)->mark = 1;
2079 sym = NULL;
2080 }
2081 }
2082
2083 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2084 }
2085
2086 /* Adjust a symbol defined by a dynamic object and referenced by a
2087 regular object. The current definition is in some section of the
2088 dynamic object, but we're not including those sections. We have to
2089 change the definition to something the rest of the link can
2090 understand. */
2091
2092 bfd_boolean
2093 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2094 struct elf_link_hash_entry *h)
2095 {
2096 struct tilegx_elf_link_hash_table *htab;
2097 bfd *dynobj;
2098 asection *s, *srel;
2099
2100 htab = tilegx_elf_hash_table (info);
2101 BFD_ASSERT (htab != NULL);
2102
2103 dynobj = htab->elf.dynobj;
2104
2105 /* Make sure we know what is going on here. */
2106 BFD_ASSERT (dynobj != NULL
2107 && (h->needs_plt
2108 || h->is_weakalias
2109 || (h->def_dynamic
2110 && h->ref_regular
2111 && !h->def_regular)));
2112
2113 /* If this is a function, put it in the procedure linkage table. We
2114 will fill in the contents of the procedure linkage table later
2115 (although we could actually do it here). */
2116 if (h->type == STT_FUNC || h->needs_plt)
2117 {
2118 if (h->plt.refcount <= 0
2119 || SYMBOL_CALLS_LOCAL (info, h)
2120 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2121 && h->root.type == bfd_link_hash_undefweak))
2122 {
2123 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2124 reloc in an input file, but the symbol was never referred
2125 to by a dynamic object, or if all references were garbage
2126 collected. In such a case, we don't actually need to build
2127 a procedure linkage table, and we can just do a
2128 R_TILEGX_JUMPOFF_X1 relocation instead. */
2129 h->plt.offset = (bfd_vma) -1;
2130 h->needs_plt = 0;
2131 }
2132
2133 return TRUE;
2134 }
2135 else
2136 h->plt.offset = (bfd_vma) -1;
2137
2138 /* If this is a weak symbol, and there is a real definition, the
2139 processor independent code will have arranged for us to see the
2140 real definition first, and we can just use the same value. */
2141 if (h->is_weakalias)
2142 {
2143 struct elf_link_hash_entry *def = weakdef (h);
2144 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2145 h->root.u.def.section = def->root.u.def.section;
2146 h->root.u.def.value = def->root.u.def.value;
2147 return TRUE;
2148 }
2149
2150 /* This is a reference to a symbol defined by a dynamic object which
2151 is not a function. */
2152
2153 /* If we are creating a shared library, we must presume that the
2154 only references to the symbol are via the global offset table.
2155 For such cases we need not do anything here; the relocations will
2156 be handled correctly by relocate_section. */
2157 if (bfd_link_pic (info))
2158 return TRUE;
2159
2160 /* If there are no references to this symbol that do not use the
2161 GOT, we don't need to generate a copy reloc. */
2162 if (!h->non_got_ref)
2163 return TRUE;
2164
2165 /* If -z nocopyreloc was given, we won't generate them either. */
2166 if (info->nocopyreloc)
2167 {
2168 h->non_got_ref = 0;
2169 return TRUE;
2170 }
2171
2172 /* If we don't find any dynamic relocs in read-only sections, then
2173 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2174 if (!_bfd_elf_readonly_dynrelocs (h))
2175 {
2176 h->non_got_ref = 0;
2177 return TRUE;
2178 }
2179
2180 /* We must allocate the symbol in our .dynbss section, which will
2181 become part of the .bss section of the executable. There will be
2182 an entry for this symbol in the .dynsym section. The dynamic
2183 object will contain position independent code, so all references
2184 from the dynamic object to this symbol will go through the global
2185 offset table. The dynamic linker will use the .dynsym entry to
2186 determine the address it must put in the global offset table, so
2187 both the dynamic object and the regular object will refer to the
2188 same memory location for the variable. */
2189
2190 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2191 to copy the initial value out of the dynamic object and into the
2192 runtime process image. We need to remember the offset into the
2193 .rel.bss section we are going to use. */
2194 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2195 {
2196 s = htab->elf.sdynrelro;
2197 srel = htab->elf.sreldynrelro;
2198 }
2199 else
2200 {
2201 s = htab->elf.sdynbss;
2202 srel = htab->elf.srelbss;
2203 }
2204 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2205 {
2206 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2207 h->needs_copy = 1;
2208 }
2209
2210 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2211 }
2212
2213 /* Allocate space in .plt, .got and associated reloc sections for
2214 dynamic relocs. */
2215
2216 static bfd_boolean
2217 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2218 {
2219 struct bfd_link_info *info;
2220 struct tilegx_elf_link_hash_table *htab;
2221 struct elf_dyn_relocs *p;
2222
2223 if (h->root.type == bfd_link_hash_indirect)
2224 return TRUE;
2225
2226 info = (struct bfd_link_info *) inf;
2227 htab = tilegx_elf_hash_table (info);
2228 BFD_ASSERT (htab != NULL);
2229
2230 if (htab->elf.dynamic_sections_created
2231 && h->plt.refcount > 0)
2232 {
2233 /* Make sure this symbol is output as a dynamic symbol.
2234 Undefined weak syms won't yet be marked as dynamic. */
2235 if (h->dynindx == -1
2236 && !h->forced_local)
2237 {
2238 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2239 return FALSE;
2240 }
2241
2242 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2243 {
2244 asection *s = htab->elf.splt;
2245
2246 /* Allocate room for the header and tail. */
2247 if (s->size == 0)
2248 {
2249 s->size = PLT_ENTRY_SIZE;
2250 }
2251
2252 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE;
2253
2254 /* If this symbol is not defined in a regular file, and we are
2255 not generating a shared library, then set the symbol to this
2256 location in the .plt. This is required to make function
2257 pointers compare as equal between the normal executable and
2258 the shared library. */
2259 if (! bfd_link_pic (info)
2260 && !h->def_regular)
2261 {
2262 h->root.u.def.section = s;
2263 h->root.u.def.value = h->plt.offset;
2264 }
2265
2266 /* Make room for this entry. */
2267 s->size += PLT_ENTRY_SIZE;
2268
2269 /* We also need to make an entry in the .got.plt section. */
2270 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2271
2272 /* We also need to make an entry in the .rela.plt section. */
2273 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2274 }
2275 else
2276 {
2277 h->plt.offset = (bfd_vma) -1;
2278 h->needs_plt = 0;
2279 }
2280 }
2281 else
2282 {
2283 h->plt.offset = (bfd_vma) -1;
2284 h->needs_plt = 0;
2285 }
2286
2287 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2288 requiring no TLS entry. */
2289 if (h->got.refcount > 0
2290 && !htab->disable_le_transition
2291 && bfd_link_executable (info)
2292 && h->dynindx == -1
2293 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2294 h->got.offset = (bfd_vma) -1;
2295 else if (h->got.refcount > 0)
2296 {
2297 asection *s;
2298 bfd_boolean dyn;
2299 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2300
2301 /* Make sure this symbol is output as a dynamic symbol.
2302 Undefined weak syms won't yet be marked as dynamic. */
2303 if (h->dynindx == -1
2304 && !h->forced_local)
2305 {
2306 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2307 return FALSE;
2308 }
2309
2310 s = htab->elf.sgot;
2311 h->got.offset = s->size;
2312 s->size += TILEGX_ELF_WORD_BYTES (htab);
2313 /* TLS_GD entries need 2 consecutive GOT slots. */
2314 if (tls_type == GOT_TLS_GD)
2315 s->size += TILEGX_ELF_WORD_BYTES (htab);
2316 dyn = htab->elf.dynamic_sections_created;
2317 /* TLS_IE needs one dynamic relocation,
2318 TLS_GD needs two if local symbol and two if global. */
2319 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2320 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2321 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2322 bfd_link_pic (info),
2323 h))
2324 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2325 }
2326 else
2327 h->got.offset = (bfd_vma) -1;
2328
2329 if (h->dyn_relocs == NULL)
2330 return TRUE;
2331
2332 /* In the shared -Bsymbolic case, discard space allocated for
2333 dynamic pc-relative relocs against symbols which turn out to be
2334 defined in regular objects. For the normal shared case, discard
2335 space for pc-relative relocs that have become local due to symbol
2336 visibility changes. */
2337
2338 if (bfd_link_pic (info))
2339 {
2340 if (SYMBOL_CALLS_LOCAL (info, h))
2341 {
2342 struct elf_dyn_relocs **pp;
2343
2344 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2345 {
2346 p->count -= p->pc_count;
2347 p->pc_count = 0;
2348 if (p->count == 0)
2349 *pp = p->next;
2350 else
2351 pp = &p->next;
2352 }
2353 }
2354
2355 /* Also discard relocs on undefined weak syms with non-default
2356 visibility. */
2357 if (h->dyn_relocs != NULL
2358 && h->root.type == bfd_link_hash_undefweak)
2359 {
2360 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2361 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2362 h->dyn_relocs = NULL;
2363
2364 /* Make sure undefined weak symbols are output as a dynamic
2365 symbol in PIEs. */
2366 else if (h->dynindx == -1
2367 && !h->forced_local)
2368 {
2369 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2370 return FALSE;
2371 }
2372 }
2373 }
2374 else
2375 {
2376 /* For the non-shared case, discard space for relocs against
2377 symbols which turn out to need copy relocs or are not
2378 dynamic. */
2379
2380 if (!h->non_got_ref
2381 && ((h->def_dynamic
2382 && !h->def_regular)
2383 || (htab->elf.dynamic_sections_created
2384 && (h->root.type == bfd_link_hash_undefweak
2385 || h->root.type == bfd_link_hash_undefined))))
2386 {
2387 /* Make sure this symbol is output as a dynamic symbol.
2388 Undefined weak syms won't yet be marked as dynamic. */
2389 if (h->dynindx == -1
2390 && !h->forced_local)
2391 {
2392 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2393 return FALSE;
2394 }
2395
2396 /* If that succeeded, we know we'll be keeping all the
2397 relocs. */
2398 if (h->dynindx != -1)
2399 goto keep;
2400 }
2401
2402 h->dyn_relocs = NULL;
2403
2404 keep: ;
2405 }
2406
2407 /* Finally, allocate space. */
2408 for (p = h->dyn_relocs; p != NULL; p = p->next)
2409 {
2410 asection *sreloc = elf_section_data (p->sec)->sreloc;
2411 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2412 }
2413
2414 return TRUE;
2415 }
2416
2417 /* Return true if the dynamic symbol for a given section should be
2418 omitted when creating a shared library. */
2419
2420 bfd_boolean
2421 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2422 struct bfd_link_info *info,
2423 asection *p)
2424 {
2425 /* We keep the .got section symbol so that explicit relocations
2426 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2427 can be turned into relocations against the .got symbol. */
2428 if (strcmp (p->name, ".got") == 0)
2429 return FALSE;
2430
2431 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p);
2432 }
2433
2434 bfd_boolean
2435 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2436 struct bfd_link_info *info)
2437 {
2438 struct tilegx_elf_link_hash_table *htab;
2439 bfd *dynobj;
2440 asection *s;
2441 bfd *ibfd;
2442
2443 htab = tilegx_elf_hash_table (info);
2444 BFD_ASSERT (htab != NULL);
2445 dynobj = htab->elf.dynobj;
2446 BFD_ASSERT (dynobj != NULL);
2447
2448 if (elf_hash_table (info)->dynamic_sections_created)
2449 {
2450 /* Set the contents of the .interp section to the interpreter. */
2451 if (bfd_link_executable (info) && !info->nointerp)
2452 {
2453 s = bfd_get_linker_section (dynobj, ".interp");
2454 BFD_ASSERT (s != NULL);
2455 s->size = strlen (htab->dynamic_interpreter) + 1;
2456 s->contents = (unsigned char *) htab->dynamic_interpreter;
2457 }
2458 }
2459
2460 /* Set up .got offsets for local syms, and space for local dynamic
2461 relocs. */
2462 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2463 {
2464 bfd_signed_vma *local_got;
2465 bfd_signed_vma *end_local_got;
2466 char *local_tls_type;
2467 bfd_size_type locsymcount;
2468 Elf_Internal_Shdr *symtab_hdr;
2469 asection *srel;
2470
2471 if (! is_tilegx_elf (ibfd))
2472 continue;
2473
2474 for (s = ibfd->sections; s != NULL; s = s->next)
2475 {
2476 struct elf_dyn_relocs *p;
2477
2478 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2479 {
2480 if (!bfd_is_abs_section (p->sec)
2481 && bfd_is_abs_section (p->sec->output_section))
2482 {
2483 /* Input section has been discarded, either because
2484 it is a copy of a linkonce section or due to
2485 linker script /DISCARD/, so we'll be discarding
2486 the relocs too. */
2487 }
2488 else if (p->count != 0)
2489 {
2490 srel = elf_section_data (p->sec)->sreloc;
2491 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2492 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2493 {
2494 info->flags |= DF_TEXTREL;
2495
2496 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
2497 p->sec->owner, p->sec);
2498 }
2499 }
2500 }
2501 }
2502
2503 local_got = elf_local_got_refcounts (ibfd);
2504 if (!local_got)
2505 continue;
2506
2507 symtab_hdr = &elf_symtab_hdr (ibfd);
2508 locsymcount = symtab_hdr->sh_info;
2509 end_local_got = local_got + locsymcount;
2510 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2511 s = htab->elf.sgot;
2512 srel = htab->elf.srelgot;
2513 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2514 {
2515 if (*local_got > 0)
2516 {
2517 *local_got = s->size;
2518 s->size += TILEGX_ELF_WORD_BYTES (htab);
2519 if (*local_tls_type == GOT_TLS_GD)
2520 s->size += TILEGX_ELF_WORD_BYTES (htab);
2521 if (bfd_link_pic (info)
2522 || *local_tls_type == GOT_TLS_GD
2523 || *local_tls_type == GOT_TLS_IE)
2524 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2525 }
2526 else
2527 *local_got = (bfd_vma) -1;
2528 }
2529 }
2530
2531 /* Allocate global sym .plt and .got entries, and space for global
2532 sym dynamic relocs. */
2533 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2534
2535 if (elf_hash_table (info)->dynamic_sections_created)
2536 {
2537 /* If the .got section is more than 0x8000 bytes, we add
2538 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2539 bit relocations have a greater chance of working. */
2540 if (htab->elf.sgot->size >= 0x8000
2541 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2542 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2543 }
2544
2545 if (htab->elf.sgotplt)
2546 {
2547 struct elf_link_hash_entry *got;
2548 got = elf_link_hash_lookup (elf_hash_table (info),
2549 "_GLOBAL_OFFSET_TABLE_",
2550 FALSE, FALSE, FALSE);
2551
2552 /* Don't allocate .got.plt section if there are no GOT nor PLT
2553 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2554 if ((got == NULL
2555 || !got->ref_regular_nonweak)
2556 && (htab->elf.sgotplt->size
2557 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2558 && (htab->elf.splt == NULL
2559 || htab->elf.splt->size == 0)
2560 && (htab->elf.sgot == NULL
2561 || (htab->elf.sgot->size
2562 == get_elf_backend_data (output_bfd)->got_header_size)))
2563 htab->elf.sgotplt->size = 0;
2564 }
2565
2566 /* The check_relocs and adjust_dynamic_symbol entry points have
2567 determined the sizes of the various dynamic sections. Allocate
2568 memory for them. */
2569 for (s = dynobj->sections; s != NULL; s = s->next)
2570 {
2571 if ((s->flags & SEC_LINKER_CREATED) == 0)
2572 continue;
2573
2574 if (s == htab->elf.splt
2575 || s == htab->elf.sgot
2576 || s == htab->elf.sgotplt
2577 || s == htab->elf.sdynbss
2578 || s == htab->elf.sdynrelro)
2579 {
2580 /* Strip this section if we don't need it; see the
2581 comment below. */
2582 }
2583 else if (strncmp (s->name, ".rela", 5) == 0)
2584 {
2585 if (s->size != 0)
2586 {
2587 /* We use the reloc_count field as a counter if we need
2588 to copy relocs into the output file. */
2589 s->reloc_count = 0;
2590 }
2591 }
2592 else
2593 {
2594 /* It's not one of our sections. */
2595 continue;
2596 }
2597
2598 if (s->size == 0)
2599 {
2600 /* If we don't need this section, strip it from the
2601 output file. This is mostly to handle .rela.bss and
2602 .rela.plt. We must create both sections in
2603 create_dynamic_sections, because they must be created
2604 before the linker maps input sections to output
2605 sections. The linker does that before
2606 adjust_dynamic_symbol is called, and it is that
2607 function which decides whether anything needs to go
2608 into these sections. */
2609 s->flags |= SEC_EXCLUDE;
2610 continue;
2611 }
2612
2613 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2614 continue;
2615
2616 /* Allocate memory for the section contents. Zero the memory
2617 for the benefit of .rela.plt, which has 4 unused entries
2618 at the beginning, and we don't want garbage. */
2619 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2620 if (s->contents == NULL)
2621 return FALSE;
2622 }
2623
2624 return _bfd_elf_add_dynamic_tags (output_bfd, info, TRUE);
2625 }
2626 \f
2627 /* Return the base VMA address which should be subtracted from real addresses
2628 when resolving @dtpoff relocation.
2629 This is PT_TLS segment p_vaddr. */
2630
2631 static bfd_vma
2632 dtpoff_base (struct bfd_link_info *info)
2633 {
2634 /* If tls_sec is NULL, we should have signalled an error already. */
2635 if (elf_hash_table (info)->tls_sec == NULL)
2636 return 0;
2637 return elf_hash_table (info)->tls_sec->vma;
2638 }
2639
2640 /* Return the relocation value for @tpoff relocation. */
2641
2642 static bfd_vma
2643 tpoff (struct bfd_link_info *info, bfd_vma address)
2644 {
2645 struct elf_link_hash_table *htab = elf_hash_table (info);
2646
2647 /* If tls_sec is NULL, we should have signalled an error already. */
2648 if (htab->tls_sec == NULL)
2649 return 0;
2650
2651 return (address - htab->tls_sec->vma);
2652 }
2653
2654 /* Copy SIZE bits from FROM to TO at address ADDR. */
2655
2656 static void
2657 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2658 {
2659 int i;
2660 for (i = 0; i < size; i++)
2661 {
2662 int from_byte = (from + i) / 8;
2663 int from_bit = (from + i) % 8;
2664 int to_byte = (to + i) / 8;
2665 int to_bit = (to + i) % 8;
2666 bfd_byte to_mask = 1 << to_bit;
2667 addr[to_byte] = (addr[to_byte] & ~to_mask)
2668 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2669 }
2670 }
2671
2672 /* Replace the MASK bits in ADDR with those in INSN, for the next
2673 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2674
2675 static void
2676 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2677 const bfd_byte *insn)
2678 {
2679 int i;
2680 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2681 {
2682 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2683 }
2684 }
2685
2686 /* Mask to extract the bits corresponding to an instruction in a
2687 specific pipe of a bundle. */
2688 static const bfd_byte insn_mask_X1[] = {
2689 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
2690 };
2691
2692 /* Mask to extract the bits corresponding to an instruction in a
2693 specific pipe of a bundle, minus the destination operand and the
2694 first source operand. */
2695 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2696 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2697 };
2698
2699 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2700 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
2701 };
2702
2703 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2704 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2705 };
2706 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2707 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
2708 };
2709
2710 /* Mask to extract the bits corresponding to an instruction in a
2711 specific pipe of a bundle, minus the register operands. */
2712 static const bfd_byte insn_mask_X0_no_operand[] = {
2713 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
2714 };
2715
2716 static const bfd_byte insn_mask_X1_no_operand[] = {
2717 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
2718 };
2719
2720 static const bfd_byte insn_mask_Y0_no_operand[] = {
2721 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
2722 };
2723
2724 static const bfd_byte insn_mask_Y1_no_operand[] = {
2725 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
2726 };
2727
2728 /* Various instructions synthesized to support tls references. */
2729
2730 /* ld r0, r0 in the X1 pipe, used for tls ie. */
2731 static const bfd_byte insn_tls_ie_ld_X1[] = {
2732 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
2733 };
2734
2735 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
2736 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
2737 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
2738 };
2739
2740 /* add r0, r0, tp in various pipes, used for tls ie. */
2741 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2742 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
2743 };
2744 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2745 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
2746 };
2747
2748 /* addx r0, r0, tp in various pipes, used for tls ie. */
2749 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
2750 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
2751 };
2752 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
2753 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
2754 };
2755
2756 /* move r0, r0 in various pipes, used for tls gd. */
2757 static const bfd_byte insn_tls_gd_add_X0X1[] = {
2758 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
2759 };
2760 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
2761 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
2762 };
2763
2764 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
2765 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
2766
2767 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
2768 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
2769
2770 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
2771 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
2772
2773 /* Relocate an TILEGX ELF section.
2774
2775 The RELOCATE_SECTION function is called by the new ELF backend linker
2776 to handle the relocations for a section.
2777
2778 The relocs are always passed as Rela structures.
2779
2780 This function is responsible for adjusting the section contents as
2781 necessary, and (if generating a relocatable output file) adjusting
2782 the reloc addend as necessary.
2783
2784 This function does not have to worry about setting the reloc
2785 address or the reloc symbol index.
2786
2787 LOCAL_SYMS is a pointer to the swapped in local symbols.
2788
2789 LOCAL_SECTIONS is an array giving the section in the input file
2790 corresponding to the st_shndx field of each local symbol.
2791
2792 The global hash table entry for the global symbols can be found
2793 via elf_sym_hashes (input_bfd).
2794
2795 When generating relocatable output, this function must handle
2796 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2797 going to be the section symbol corresponding to the output
2798 section, which means that the addend must be adjusted
2799 accordingly. */
2800
2801 bfd_boolean
2802 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
2803 bfd *input_bfd, asection *input_section,
2804 bfd_byte *contents, Elf_Internal_Rela *relocs,
2805 Elf_Internal_Sym *local_syms,
2806 asection **local_sections)
2807 {
2808 struct tilegx_elf_link_hash_table *htab;
2809 Elf_Internal_Shdr *symtab_hdr;
2810 struct elf_link_hash_entry **sym_hashes;
2811 bfd_vma *local_got_offsets;
2812 bfd_vma got_base;
2813 asection *sreloc;
2814 Elf_Internal_Rela *rel;
2815 Elf_Internal_Rela *relend;
2816 int num_relocs;
2817
2818 htab = tilegx_elf_hash_table (info);
2819 BFD_ASSERT (htab != NULL);
2820 symtab_hdr = &elf_symtab_hdr (input_bfd);
2821 sym_hashes = elf_sym_hashes (input_bfd);
2822 local_got_offsets = elf_local_got_offsets (input_bfd);
2823
2824 if (elf_hash_table (info)->hgot == NULL)
2825 got_base = 0;
2826 else
2827 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2828
2829 sreloc = elf_section_data (input_section)->sreloc;
2830
2831 rel = relocs;
2832 num_relocs = input_section->reloc_count;
2833 relend = relocs + num_relocs;
2834 for (; rel < relend; rel++)
2835 {
2836 int r_type, tls_type;
2837 bfd_boolean is_tls_iele, is_tls_le;
2838 reloc_howto_type *howto;
2839 unsigned long r_symndx;
2840 struct elf_link_hash_entry *h;
2841 Elf_Internal_Sym *sym;
2842 tilegx_create_func create_func;
2843 asection *sec;
2844 bfd_vma relocation;
2845 bfd_reloc_status_type r;
2846 const char *name;
2847 bfd_vma off;
2848 bfd_boolean is_plt = FALSE;
2849 bfd_boolean resolved_to_zero;
2850 bfd_boolean unresolved_reloc;
2851
2852 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2853 if (r_type == R_TILEGX_GNU_VTINHERIT
2854 || r_type == R_TILEGX_GNU_VTENTRY)
2855 continue;
2856
2857 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
2858 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2859
2860 howto = tilegx_elf_howto_table + r_type;
2861
2862 /* This is a final link. */
2863 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2864 h = NULL;
2865 sym = NULL;
2866 sec = NULL;
2867 unresolved_reloc = FALSE;
2868 if (r_symndx < symtab_hdr->sh_info)
2869 {
2870 sym = local_syms + r_symndx;
2871 sec = local_sections[r_symndx];
2872 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2873 }
2874 else
2875 {
2876 bfd_boolean warned ATTRIBUTE_UNUSED;
2877 bfd_boolean ignored ATTRIBUTE_UNUSED;
2878
2879 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2880 r_symndx, symtab_hdr, sym_hashes,
2881 h, sec, relocation,
2882 unresolved_reloc, warned, ignored);
2883 if (warned)
2884 {
2885 /* To avoid generating warning messages about truncated
2886 relocations, set the relocation's address to be the same as
2887 the start of this section. */
2888 if (input_section->output_section != NULL)
2889 relocation = input_section->output_section->vma;
2890 else
2891 relocation = 0;
2892 }
2893 }
2894
2895 if (sec != NULL && discarded_section (sec))
2896 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2897 rel, 1, relend, howto, 0, contents);
2898
2899 if (bfd_link_relocatable (info))
2900 continue;
2901
2902 if (h != NULL)
2903 name = h->root.root.string;
2904 else
2905 {
2906 name = (bfd_elf_string_from_elf_section
2907 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2908 if (name == NULL || *name == '\0')
2909 name = bfd_section_name (sec);
2910 }
2911
2912 switch (r_type)
2913 {
2914 case R_TILEGX_TLS_GD_CALL:
2915 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
2916 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
2917 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
2918 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
2919 case R_TILEGX_IMM8_X0_TLS_ADD:
2920 case R_TILEGX_IMM8_Y0_TLS_ADD:
2921 case R_TILEGX_IMM8_X1_TLS_ADD:
2922 case R_TILEGX_IMM8_Y1_TLS_ADD:
2923 tls_type = GOT_UNKNOWN;
2924 if (h == NULL && local_got_offsets)
2925 tls_type =
2926 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
2927 else if (h != NULL)
2928 tls_type = tilegx_elf_hash_entry(h)->tls_type;
2929
2930 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE);
2931 is_tls_le = is_tls_iele && (!input_section->sec_flg0
2932 && bfd_link_executable (info)
2933 && (h == NULL || h->dynindx == -1));
2934
2935 if (r_type == R_TILEGX_TLS_GD_CALL)
2936 {
2937 if (is_tls_le)
2938 {
2939 /* GD -> LE */
2940 tilegx_replace_insn (contents + rel->r_offset,
2941 insn_mask_X1, insn_move_X0X1);
2942 continue;
2943 }
2944 else if (is_tls_iele)
2945 {
2946 /* GD -> IE */
2947 if (ABI_64_P (output_bfd))
2948 tilegx_replace_insn (contents + rel->r_offset,
2949 insn_mask_X1, insn_tls_ie_ld_X1);
2950 else
2951 tilegx_replace_insn (contents + rel->r_offset,
2952 insn_mask_X1, insn_tls_ie_ld4s_X1);
2953 continue;
2954 }
2955
2956 /* GD -> GD */
2957 h = (struct elf_link_hash_entry *)
2958 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
2959 FALSE, TRUE);
2960 BFD_ASSERT (h != NULL);
2961 r_type = R_TILEGX_JUMPOFF_X1_PLT;
2962 howto = tilegx_elf_howto_table + r_type;
2963 }
2964 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
2965 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
2966 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
2967 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
2968 {
2969 bfd_boolean is_pipe0 =
2970 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
2971 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
2972 bfd_boolean is_X0X1 =
2973 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
2974 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
2975 int dest_begin = is_pipe0 ? 0 : 31;
2976 int src_begin;
2977 const bfd_byte *insn;
2978 const bfd_byte *mask = NULL;
2979
2980 if (is_tls_le)
2981 {
2982 /* 1. copy dest operand into the first source operand.
2983 2. change the opcode to "move". */
2984 src_begin = is_pipe0 ? 6 : 37;
2985 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
2986
2987 switch (r_type)
2988 {
2989 case R_TILEGX_IMM8_X0_TLS_ADD:
2990 mask = insn_mask_X0_no_dest_no_srca;
2991 break;
2992 case R_TILEGX_IMM8_X1_TLS_ADD:
2993 mask = insn_mask_X1_no_dest_no_srca;
2994 break;
2995 case R_TILEGX_IMM8_Y0_TLS_ADD:
2996 mask = insn_mask_Y0_no_dest_no_srca;
2997 break;
2998 case R_TILEGX_IMM8_Y1_TLS_ADD:
2999 mask = insn_mask_Y1_no_dest_no_srca;
3000 break;
3001 }
3002 }
3003 else
3004 {
3005 /* 1. copy dest operand into the second source operand.
3006 2. change the opcode to "add". */
3007 src_begin = is_pipe0 ? 12 : 43;
3008 if (ABI_64_P (output_bfd))
3009 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3010 else
3011 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3012
3013 switch (r_type)
3014 {
3015 case R_TILEGX_IMM8_X0_TLS_ADD:
3016 mask = insn_mask_X0_no_operand;
3017 break;
3018 case R_TILEGX_IMM8_X1_TLS_ADD:
3019 mask = insn_mask_X1_no_operand;
3020 break;
3021 case R_TILEGX_IMM8_Y0_TLS_ADD:
3022 mask = insn_mask_Y0_no_operand;
3023 break;
3024 case R_TILEGX_IMM8_Y1_TLS_ADD:
3025 mask = insn_mask_Y1_no_operand;
3026 break;
3027 }
3028 }
3029
3030 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3031 src_begin, 6);
3032 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3033
3034 continue;
3035 }
3036 else
3037 {
3038 const bfd_byte *mask = NULL;
3039 const bfd_byte *add_insn = NULL;
3040 bfd_boolean is_64bit = ABI_64_P (output_bfd);
3041
3042 switch (r_type)
3043 {
3044 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3045 add_insn = is_tls_iele
3046 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3047 : insn_tls_gd_add_X0X1;
3048 mask = insn_mask_X0_no_dest_no_srca;
3049 break;
3050 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3051 add_insn = is_tls_iele
3052 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3053 : insn_tls_gd_add_X0X1;
3054 mask = insn_mask_X1_no_dest_no_srca;
3055 break;
3056 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3057 add_insn = is_tls_iele
3058 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3059 : insn_tls_gd_add_Y0Y1;
3060 mask = insn_mask_Y0_no_dest_no_srca;
3061 break;
3062 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3063 add_insn = is_tls_iele
3064 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3065 : insn_tls_gd_add_Y0Y1;
3066 mask = insn_mask_Y1_no_dest_no_srca;
3067 break;
3068 }
3069
3070 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3071
3072 continue;
3073 }
3074 break;
3075 case R_TILEGX_TLS_IE_LOAD:
3076 if (!input_section->sec_flg0
3077 && bfd_link_executable (info)
3078 && (h == NULL || h->dynindx == -1))
3079 {
3080 /* IE -> LE */
3081 tilegx_replace_insn (contents + rel->r_offset,
3082 insn_mask_X1_no_dest_no_srca,
3083 insn_move_X0X1);
3084 }
3085 else
3086 {
3087 /* IE -> IE */
3088 if (ABI_64_P (output_bfd))
3089 tilegx_replace_insn (contents + rel->r_offset,
3090 insn_mask_X1_no_dest_no_srca,
3091 insn_tls_ie_ld_X1);
3092 else
3093 tilegx_replace_insn (contents + rel->r_offset,
3094 insn_mask_X1_no_dest_no_srca,
3095 insn_tls_ie_ld4s_X1);
3096 }
3097 continue;
3098 break;
3099 default:
3100 break;
3101 }
3102
3103 resolved_to_zero = (h != NULL
3104 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
3105
3106 switch (r_type)
3107 {
3108 case R_TILEGX_IMM16_X0_HW0_GOT:
3109 case R_TILEGX_IMM16_X1_HW0_GOT:
3110 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3111 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3112 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3113 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3114 /* Relocation is to the entry for this symbol in the global
3115 offset table. */
3116 if (htab->elf.sgot == NULL)
3117 abort ();
3118
3119 if (h != NULL)
3120 {
3121 bfd_boolean dyn;
3122
3123 off = h->got.offset;
3124 BFD_ASSERT (off != (bfd_vma) -1);
3125 dyn = elf_hash_table (info)->dynamic_sections_created;
3126
3127 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3128 bfd_link_pic (info),
3129 h)
3130 || (bfd_link_pic (info)
3131 && SYMBOL_REFERENCES_LOCAL (info, h)))
3132 {
3133 /* This is actually a static link, or it is a
3134 -Bsymbolic link and the symbol is defined
3135 locally, or the symbol was forced to be local
3136 because of a version file. We must initialize
3137 this entry in the global offset table. Since the
3138 offset must always be a multiple
3139 of 8 for 64-bit, we use the least significant bit
3140 to record whether we have initialized it already.
3141
3142 When doing a dynamic link, we create a .rela.got
3143 relocation entry to initialize the value. This
3144 is done in the finish_dynamic_symbol routine. */
3145 if ((off & 1) != 0)
3146 off &= ~1;
3147 else
3148 {
3149 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3150 htab->elf.sgot->contents + off);
3151 h->got.offset |= 1;
3152 }
3153 }
3154 else
3155 unresolved_reloc = FALSE;
3156 }
3157 else
3158 {
3159 BFD_ASSERT (local_got_offsets != NULL
3160 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3161
3162 off = local_got_offsets[r_symndx];
3163
3164 /* The offset must always be a multiple of 8 on 64-bit.
3165 We use the least significant bit to record
3166 whether we have already processed this entry. */
3167 if ((off & 1) != 0)
3168 off &= ~1;
3169 else
3170 {
3171 if (bfd_link_pic (info))
3172 {
3173 asection *s;
3174 Elf_Internal_Rela outrel;
3175
3176 /* We need to generate a R_TILEGX_RELATIVE reloc
3177 for the dynamic linker. */
3178 s = htab->elf.srelgot;
3179 BFD_ASSERT (s != NULL);
3180
3181 outrel.r_offset = (htab->elf.sgot->output_section->vma
3182 + htab->elf.sgot->output_offset
3183 + off);
3184 outrel.r_info =
3185 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3186 outrel.r_addend = relocation;
3187 relocation = 0;
3188 tilegx_elf_append_rela (output_bfd, s, &outrel);
3189 }
3190
3191 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3192 htab->elf.sgot->contents + off);
3193 local_got_offsets[r_symndx] |= 1;
3194 }
3195 }
3196 relocation = off - got_base;
3197 break;
3198
3199 case R_TILEGX_JUMPOFF_X1_PLT:
3200 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
3201 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
3202 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
3203 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
3204 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
3205 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
3206 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
3207 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
3208 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
3209 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
3210 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
3211 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
3212 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
3213 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
3214 /* Relocation is to the entry for this symbol in the
3215 procedure linkage table. */
3216 BFD_ASSERT (h != NULL);
3217
3218 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3219 {
3220 /* We didn't make a PLT entry for this symbol. This
3221 happens when statically linking PIC code, or when
3222 using -Bsymbolic. */
3223 break;
3224 }
3225
3226 relocation = (htab->elf.splt->output_section->vma
3227 + htab->elf.splt->output_offset
3228 + h->plt.offset);
3229 unresolved_reloc = FALSE;
3230 break;
3231
3232 case R_TILEGX_64_PCREL:
3233 case R_TILEGX_32_PCREL:
3234 case R_TILEGX_16_PCREL:
3235 case R_TILEGX_8_PCREL:
3236 case R_TILEGX_IMM16_X0_HW0_PCREL:
3237 case R_TILEGX_IMM16_X1_HW0_PCREL:
3238 case R_TILEGX_IMM16_X0_HW1_PCREL:
3239 case R_TILEGX_IMM16_X1_HW1_PCREL:
3240 case R_TILEGX_IMM16_X0_HW2_PCREL:
3241 case R_TILEGX_IMM16_X1_HW2_PCREL:
3242 case R_TILEGX_IMM16_X0_HW3_PCREL:
3243 case R_TILEGX_IMM16_X1_HW3_PCREL:
3244 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3245 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3246 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3247 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3248 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3249 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3250 if (h != NULL
3251 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3252 break;
3253 /* Fall through. */
3254 case R_TILEGX_64:
3255 case R_TILEGX_32:
3256 case R_TILEGX_16:
3257 case R_TILEGX_8:
3258 case R_TILEGX_HW0:
3259 case R_TILEGX_HW1:
3260 case R_TILEGX_HW2:
3261 case R_TILEGX_HW3:
3262 case R_TILEGX_HW0_LAST:
3263 case R_TILEGX_HW1_LAST:
3264 case R_TILEGX_HW2_LAST:
3265 case R_TILEGX_COPY:
3266 case R_TILEGX_GLOB_DAT:
3267 case R_TILEGX_JMP_SLOT:
3268 case R_TILEGX_RELATIVE:
3269 case R_TILEGX_BROFF_X1:
3270 case R_TILEGX_JUMPOFF_X1:
3271 case R_TILEGX_IMM8_X0:
3272 case R_TILEGX_IMM8_Y0:
3273 case R_TILEGX_IMM8_X1:
3274 case R_TILEGX_IMM8_Y1:
3275 case R_TILEGX_DEST_IMM8_X1:
3276 case R_TILEGX_MT_IMM14_X1:
3277 case R_TILEGX_MF_IMM14_X1:
3278 case R_TILEGX_MMSTART_X0:
3279 case R_TILEGX_MMEND_X0:
3280 case R_TILEGX_SHAMT_X0:
3281 case R_TILEGX_SHAMT_X1:
3282 case R_TILEGX_SHAMT_Y0:
3283 case R_TILEGX_SHAMT_Y1:
3284 case R_TILEGX_IMM16_X0_HW0:
3285 case R_TILEGX_IMM16_X1_HW0:
3286 case R_TILEGX_IMM16_X0_HW1:
3287 case R_TILEGX_IMM16_X1_HW1:
3288 case R_TILEGX_IMM16_X0_HW2:
3289 case R_TILEGX_IMM16_X1_HW2:
3290 case R_TILEGX_IMM16_X0_HW3:
3291 case R_TILEGX_IMM16_X1_HW3:
3292 case R_TILEGX_IMM16_X0_HW0_LAST:
3293 case R_TILEGX_IMM16_X1_HW0_LAST:
3294 case R_TILEGX_IMM16_X0_HW1_LAST:
3295 case R_TILEGX_IMM16_X1_HW1_LAST:
3296 case R_TILEGX_IMM16_X0_HW2_LAST:
3297 case R_TILEGX_IMM16_X1_HW2_LAST:
3298 if ((input_section->flags & SEC_ALLOC) == 0)
3299 break;
3300
3301 if ((bfd_link_pic (info)
3302 && (h == NULL
3303 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3304 && !resolved_to_zero)
3305 || h->root.type != bfd_link_hash_undefweak)
3306 && (! howto->pc_relative
3307 || !SYMBOL_CALLS_LOCAL (info, h)))
3308 || (!bfd_link_pic (info)
3309 && h != NULL
3310 && h->dynindx != -1
3311 && !h->non_got_ref
3312 && ((h->def_dynamic
3313 && !h->def_regular)
3314 || h->root.type == bfd_link_hash_undefweak
3315 || h->root.type == bfd_link_hash_undefined)))
3316 {
3317 Elf_Internal_Rela outrel;
3318 bfd_boolean skip, relocate = FALSE;
3319
3320 /* When generating a shared object, these relocations
3321 are copied into the output file to be resolved at run
3322 time. */
3323
3324 BFD_ASSERT (sreloc != NULL);
3325
3326 skip = FALSE;
3327
3328 outrel.r_offset =
3329 _bfd_elf_section_offset (output_bfd, info, input_section,
3330 rel->r_offset);
3331 if (outrel.r_offset == (bfd_vma) -1)
3332 skip = TRUE;
3333 else if (outrel.r_offset == (bfd_vma) -2)
3334 skip = TRUE, relocate = TRUE;
3335 outrel.r_offset += (input_section->output_section->vma
3336 + input_section->output_offset);
3337
3338 switch (r_type)
3339 {
3340 case R_TILEGX_64_PCREL:
3341 case R_TILEGX_32_PCREL:
3342 case R_TILEGX_16_PCREL:
3343 case R_TILEGX_8_PCREL:
3344 /* If the symbol is not dynamic, we should not keep
3345 a dynamic relocation. But an .rela.* slot has been
3346 allocated for it, output R_TILEGX_NONE.
3347 FIXME: Add code tracking needed dynamic relocs as
3348 e.g. i386 has. */
3349 if (h->dynindx == -1)
3350 skip = TRUE, relocate = TRUE;
3351 break;
3352 }
3353
3354 if (skip)
3355 memset (&outrel, 0, sizeof outrel);
3356 /* h->dynindx may be -1 if the symbol was marked to
3357 become local. */
3358 else if (h != NULL &&
3359 h->dynindx != -1
3360 && (! is_plt
3361 || !bfd_link_pic (info)
3362 || !SYMBOLIC_BIND (info, h)
3363 || !h->def_regular))
3364 {
3365 BFD_ASSERT (h->dynindx != -1);
3366 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3367 outrel.r_addend = rel->r_addend;
3368 }
3369 else
3370 {
3371 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3372 {
3373 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3374 R_TILEGX_RELATIVE);
3375 outrel.r_addend = relocation + rel->r_addend;
3376 }
3377 else
3378 {
3379 long indx;
3380
3381 outrel.r_addend = relocation + rel->r_addend;
3382
3383 if (is_plt)
3384 sec = htab->elf.splt;
3385
3386 if (bfd_is_abs_section (sec))
3387 indx = 0;
3388 else if (sec == NULL || sec->owner == NULL)
3389 {
3390 bfd_set_error (bfd_error_bad_value);
3391 return FALSE;
3392 }
3393 else
3394 {
3395 asection *osec;
3396
3397 /* We are turning this relocation into one
3398 against a section symbol. It would be
3399 proper to subtract the symbol's value,
3400 osec->vma, from the emitted reloc addend,
3401 but ld.so expects buggy relocs. */
3402 osec = sec->output_section;
3403 indx = elf_section_data (osec)->dynindx;
3404
3405 if (indx == 0)
3406 {
3407 osec = htab->elf.text_index_section;
3408 indx = elf_section_data (osec)->dynindx;
3409 }
3410
3411 /* FIXME: we really should be able to link non-pic
3412 shared libraries. */
3413 if (indx == 0)
3414 {
3415 BFD_FAIL ();
3416 _bfd_error_handler
3417 (_("%pB: probably compiled without -fPIC?"),
3418 input_bfd);
3419 bfd_set_error (bfd_error_bad_value);
3420 return FALSE;
3421 }
3422 }
3423
3424 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3425 r_type);
3426 }
3427 }
3428
3429 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3430
3431 /* This reloc will be computed at runtime, so there's no
3432 need to do anything now. */
3433 if (! relocate)
3434 continue;
3435 }
3436 break;
3437
3438 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3439 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3440 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3441 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3442 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3443 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3444 if (!bfd_link_executable (info))
3445 {
3446 Elf_Internal_Rela outrel;
3447 bfd_boolean skip;
3448
3449 BFD_ASSERT (sreloc != NULL);
3450 skip = FALSE;
3451 outrel.r_offset =
3452 _bfd_elf_section_offset (output_bfd, info, input_section,
3453 rel->r_offset);
3454 if (outrel.r_offset == (bfd_vma) -1)
3455 skip = TRUE;
3456 else if (outrel.r_offset == (bfd_vma) -2)
3457 skip = TRUE;
3458 outrel.r_offset += (input_section->output_section->vma
3459 + input_section->output_offset);
3460 if (skip)
3461 memset (&outrel, 0, sizeof outrel);
3462 else
3463 {
3464 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3465 outrel.r_addend = relocation - dtpoff_base (info)
3466 + rel->r_addend;
3467 }
3468
3469 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3470 continue;
3471 }
3472 relocation = tpoff (info, relocation);
3473 break;
3474
3475 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3476 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3477 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3478 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3479 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3480 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3481 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3482 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3483 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3484 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3485 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3486 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3487 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3488 input_section->sec_flg0);
3489 tls_type = GOT_UNKNOWN;
3490 if (h == NULL && local_got_offsets)
3491 tls_type =
3492 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3493 else if (h != NULL)
3494 {
3495 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3496 if (bfd_link_executable (info)
3497 && h->dynindx == -1
3498 && tls_type == GOT_TLS_IE)
3499 r_type = (!input_section->sec_flg0
3500 ? tilegx_tls_translate_to_le (r_type)
3501 : tilegx_tls_translate_to_ie (r_type));
3502 }
3503
3504 if (tls_type == GOT_TLS_IE)
3505 r_type = tilegx_tls_translate_to_ie (r_type);
3506
3507 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3508 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3509 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3510 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3511 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3512 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3513 {
3514 relocation = tpoff (info, relocation);
3515 break;
3516 }
3517
3518 if (h != NULL)
3519 {
3520 off = h->got.offset;
3521 h->got.offset |= 1;
3522 }
3523 else
3524 {
3525 BFD_ASSERT (local_got_offsets != NULL);
3526 off = local_got_offsets[r_symndx];
3527 local_got_offsets[r_symndx] |= 1;
3528 }
3529
3530 if (htab->elf.sgot == NULL)
3531 abort ();
3532
3533 if ((off & 1) != 0)
3534 off &= ~1;
3535 else
3536 {
3537 Elf_Internal_Rela outrel;
3538 int indx = 0;
3539 bfd_boolean need_relocs = FALSE;
3540
3541 if (htab->elf.srelgot == NULL)
3542 abort ();
3543
3544 if (h != NULL)
3545 {
3546 bfd_boolean dyn;
3547 dyn = htab->elf.dynamic_sections_created;
3548
3549 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3550 bfd_link_pic (info),
3551 h)
3552 && (!bfd_link_pic (info)
3553 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3554 {
3555 indx = h->dynindx;
3556 }
3557 }
3558
3559 /* The GOT entries have not been initialized yet. Do it
3560 now, and emit any relocations. */
3561 if ((bfd_link_pic (info) || indx != 0)
3562 && (h == NULL
3563 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3564 || h->root.type != bfd_link_hash_undefweak))
3565 need_relocs = TRUE;
3566
3567 switch (r_type)
3568 {
3569 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3570 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3571 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3572 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3573 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3574 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3575 if (need_relocs) {
3576 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3577 htab->elf.sgot->contents + off);
3578 outrel.r_offset = (htab->elf.sgot->output_section->vma
3579 + htab->elf.sgot->output_offset + off);
3580 outrel.r_addend = 0;
3581 if (indx == 0)
3582 outrel.r_addend = relocation - dtpoff_base (info);
3583 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3584 TILEGX_ELF_TPOFF_RELOC (htab));
3585 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3586 } else {
3587 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3588 tpoff (info, relocation),
3589 htab->elf.sgot->contents + off);
3590 }
3591 break;
3592
3593 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3594 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3595 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3596 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3597 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3598 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3599 if (need_relocs) {
3600 outrel.r_offset = (htab->elf.sgot->output_section->vma
3601 + htab->elf.sgot->output_offset + off);
3602 outrel.r_addend = 0;
3603 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3604 TILEGX_ELF_DTPMOD_RELOC (htab));
3605 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3606 htab->elf.sgot->contents + off);
3607 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3608 if (indx == 0)
3609 {
3610 BFD_ASSERT (! unresolved_reloc);
3611 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3612 relocation - dtpoff_base (info),
3613 (htab->elf.sgot->contents + off +
3614 TILEGX_ELF_WORD_BYTES (htab)));
3615 }
3616 else
3617 {
3618 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3619 (htab->elf.sgot->contents + off +
3620 TILEGX_ELF_WORD_BYTES (htab)));
3621 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3622 TILEGX_ELF_DTPOFF_RELOC (htab));
3623 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3624 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3625 }
3626 }
3627
3628 else {
3629 /* If we are not emitting relocations for a
3630 general dynamic reference, then we must be in a
3631 static link or an executable link with the
3632 symbol binding locally. Mark it as belonging
3633 to module 1, the executable. */
3634 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3635 htab->elf.sgot->contents + off );
3636 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3637 relocation - dtpoff_base (info),
3638 htab->elf.sgot->contents + off +
3639 TILEGX_ELF_WORD_BYTES (htab));
3640 }
3641 break;
3642 }
3643 }
3644
3645 if (off >= (bfd_vma) -2)
3646 abort ();
3647
3648 relocation = off - got_base;
3649 unresolved_reloc = FALSE;
3650 howto = tilegx_elf_howto_table + r_type;
3651 break;
3652
3653 default:
3654 break;
3655 }
3656
3657 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3658 because such sections are not SEC_ALLOC and thus ld.so will
3659 not process them. */
3660 if (unresolved_reloc
3661 && !((input_section->flags & SEC_DEBUGGING) != 0
3662 && h->def_dynamic)
3663 && _bfd_elf_section_offset (output_bfd, info, input_section,
3664 rel->r_offset) != (bfd_vma) -1)
3665 _bfd_error_handler
3666 /* xgettext:c-format */
3667 (_("%pB(%pA+%#" PRIx64 "): "
3668 "unresolvable %s relocation against symbol `%s'"),
3669 input_bfd,
3670 input_section,
3671 (uint64_t) rel->r_offset,
3672 howto->name,
3673 h->root.root.string);
3674
3675 r = bfd_reloc_continue;
3676
3677 /* Get the operand creation function, if any. */
3678 create_func = reloc_to_create_func[r_type];
3679 if (create_func == NULL)
3680 {
3681 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3682 contents, rel->r_offset,
3683 relocation, rel->r_addend);
3684 }
3685 else
3686 {
3687 if (howto->pc_relative)
3688 {
3689 relocation -=
3690 input_section->output_section->vma + input_section->output_offset;
3691 if (howto->pcrel_offset)
3692 relocation -= rel->r_offset;
3693 }
3694
3695 bfd_byte *data;
3696
3697 /* Add the relocation addend if any to the final target value */
3698 relocation += rel->r_addend;
3699
3700 /* Do basic range checking */
3701 r = bfd_check_overflow (howto->complain_on_overflow,
3702 howto->bitsize,
3703 howto->rightshift,
3704 TILEGX_ELF_WORD_BYTES (htab) * 8,
3705 relocation);
3706
3707 /*
3708 * Write the relocated value out into the raw section data.
3709 * Don't put a relocation out in the .rela section.
3710 */
3711 tilegx_bundle_bits mask = create_func(-1);
3712 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
3713
3714 /* Only touch bytes while the mask is not 0, so we
3715 don't write to out of bounds memory if this is actually
3716 a 16-bit switch instruction. */
3717 for (data = contents + rel->r_offset; mask != 0; data++)
3718 {
3719 bfd_byte byte_mask = (bfd_byte)mask;
3720 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3721 mask >>= 8;
3722 value >>= 8;
3723 }
3724 }
3725
3726 if (r != bfd_reloc_ok)
3727 {
3728 const char *msg = NULL;
3729
3730 switch (r)
3731 {
3732 case bfd_reloc_overflow:
3733 (*info->callbacks->reloc_overflow)
3734 (info, (h ? &h->root : NULL), name, howto->name,
3735 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3736 break;
3737
3738 case bfd_reloc_undefined:
3739 (*info->callbacks->undefined_symbol)
3740 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
3741 break;
3742
3743 case bfd_reloc_outofrange:
3744 msg = _("internal error: out of range error");
3745 break;
3746
3747 case bfd_reloc_notsupported:
3748 msg = _("internal error: unsupported relocation error");
3749 break;
3750
3751 case bfd_reloc_dangerous:
3752 msg = _("internal error: dangerous relocation");
3753 break;
3754
3755 default:
3756 msg = _("internal error: unknown error");
3757 break;
3758 }
3759
3760 if (msg)
3761 (*info->callbacks->warning) (info, msg, name, input_bfd,
3762 input_section, rel->r_offset);
3763 }
3764 }
3765
3766 return TRUE;
3767 }
3768
3769 /* Finish up dynamic symbol handling. We set the contents of various
3770 dynamic sections here. */
3771
3772 bfd_boolean
3773 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
3774 struct bfd_link_info *info,
3775 struct elf_link_hash_entry *h,
3776 Elf_Internal_Sym *sym)
3777 {
3778 struct tilegx_elf_link_hash_table *htab;
3779
3780 htab = tilegx_elf_hash_table (info);
3781 BFD_ASSERT (htab != NULL);
3782
3783 if (h->plt.offset != (bfd_vma) -1)
3784 {
3785 asection *splt;
3786 asection *srela;
3787 asection *sgotplt;
3788 Elf_Internal_Rela rela;
3789 bfd_byte *loc;
3790 bfd_vma r_offset;
3791 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
3792
3793
3794 int rela_index;
3795
3796 /* This symbol has an entry in the PLT. Set it up. */
3797
3798 BFD_ASSERT (h->dynindx != -1);
3799
3800 splt = htab->elf.splt;
3801 srela = htab->elf.srelplt;
3802 sgotplt = htab->elf.sgotplt;
3803
3804 if (splt == NULL || srela == NULL)
3805 abort ();
3806
3807 /* Fill in the entry in the procedure linkage table. */
3808 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
3809 h->plt.offset, &r_offset);
3810
3811 /* Fill in the entry in the global offset table, which initially points
3812 to the beginning of the plt. */
3813 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3814 splt->output_section->vma + splt->output_offset,
3815 sgotplt->contents + r_offset);
3816
3817 /* Fill in the entry in the .rela.plt section. */
3818 rela.r_offset = (sgotplt->output_section->vma
3819 + sgotplt->output_offset
3820 + r_offset);
3821 rela.r_addend = 0;
3822 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
3823
3824 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
3825 bed->s->swap_reloca_out (output_bfd, &rela, loc);
3826
3827 if (!h->def_regular)
3828 {
3829 /* Mark the symbol as undefined, rather than as defined in
3830 the .plt section. Leave the value alone. */
3831 sym->st_shndx = SHN_UNDEF;
3832 /* If the symbol is weak, we do need to clear the value.
3833 Otherwise, the PLT entry would provide a definition for
3834 the symbol even if the symbol wasn't defined anywhere,
3835 and so the symbol would never be NULL. */
3836 if (!h->ref_regular_nonweak)
3837 sym->st_value = 0;
3838 }
3839 }
3840
3841 if (h->got.offset != (bfd_vma) -1
3842 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3843 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3844 {
3845 asection *sgot;
3846 asection *srela;
3847 Elf_Internal_Rela rela;
3848
3849 /* This symbol has an entry in the GOT. Set it up. */
3850
3851 sgot = htab->elf.sgot;
3852 srela = htab->elf.srelgot;
3853 BFD_ASSERT (sgot != NULL && srela != NULL);
3854
3855 rela.r_offset = (sgot->output_section->vma
3856 + sgot->output_offset
3857 + (h->got.offset &~ (bfd_vma) 1));
3858
3859 /* If this is a -Bsymbolic link, and the symbol is defined
3860 locally, we just want to emit a RELATIVE reloc. Likewise if
3861 the symbol was forced to be local because of a version file.
3862 The entry in the global offset table will already have been
3863 initialized in the relocate_section function. */
3864 if (bfd_link_pic (info)
3865 && (info->symbolic || h->dynindx == -1)
3866 && h->def_regular)
3867 {
3868 asection *sec = h->root.u.def.section;
3869 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3870 rela.r_addend = (h->root.u.def.value
3871 + sec->output_section->vma
3872 + sec->output_offset);
3873 }
3874 else
3875 {
3876 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
3877 rela.r_addend = 0;
3878 }
3879
3880 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3881 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
3882 tilegx_elf_append_rela (output_bfd, srela, &rela);
3883 }
3884
3885 if (h->needs_copy)
3886 {
3887 asection *s;
3888 Elf_Internal_Rela rela;
3889
3890 /* This symbols needs a copy reloc. Set it up. */
3891 BFD_ASSERT (h->dynindx != -1);
3892
3893 if (h->root.u.def.section == htab->elf.sdynrelro)
3894 s = htab->elf.sreldynrelro;
3895 else
3896 s = htab->elf.srelbss;
3897 BFD_ASSERT (s != NULL);
3898
3899 rela.r_offset = (h->root.u.def.value
3900 + h->root.u.def.section->output_section->vma
3901 + h->root.u.def.section->output_offset);
3902 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
3903 rela.r_addend = 0;
3904 tilegx_elf_append_rela (output_bfd, s, &rela);
3905 }
3906
3907 /* Mark some specially defined symbols as absolute. */
3908 if (h == htab->elf.hdynamic
3909 || (h == htab->elf.hgot || h == htab->elf.hplt))
3910 sym->st_shndx = SHN_ABS;
3911
3912 return TRUE;
3913 }
3914
3915 /* Finish up the dynamic sections. */
3916
3917 static bfd_boolean
3918 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
3919 bfd *dynobj, asection *sdyn,
3920 asection *splt ATTRIBUTE_UNUSED)
3921 {
3922 struct tilegx_elf_link_hash_table *htab;
3923 const struct elf_backend_data *bed;
3924 bfd_byte *dyncon, *dynconend;
3925 size_t dynsize;
3926
3927 htab = tilegx_elf_hash_table (info);
3928 BFD_ASSERT (htab != NULL);
3929 bed = get_elf_backend_data (output_bfd);
3930 dynsize = bed->s->sizeof_dyn;
3931 dynconend = sdyn->contents + sdyn->size;
3932
3933 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
3934 {
3935 Elf_Internal_Dyn dyn;
3936 asection *s;
3937
3938 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
3939
3940 switch (dyn.d_tag)
3941 {
3942 case DT_PLTGOT:
3943 s = htab->elf.sgotplt;
3944 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3945 break;
3946 case DT_JMPREL:
3947 s = htab->elf.srelplt;
3948 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3949 break;
3950 case DT_PLTRELSZ:
3951 s = htab->elf.srelplt;
3952 dyn.d_un.d_val = s->size;
3953 break;
3954 default:
3955 continue;
3956 }
3957
3958 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
3959 }
3960 return TRUE;
3961 }
3962
3963 bfd_boolean
3964 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
3965 struct bfd_link_info *info)
3966 {
3967 bfd *dynobj;
3968 asection *sdyn;
3969 struct tilegx_elf_link_hash_table *htab;
3970 size_t pad_size;
3971
3972 htab = tilegx_elf_hash_table (info);
3973 BFD_ASSERT (htab != NULL);
3974 dynobj = htab->elf.dynobj;
3975
3976 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3977
3978 if (elf_hash_table (info)->dynamic_sections_created)
3979 {
3980 asection *splt;
3981 bfd_boolean ret;
3982
3983 splt = htab->elf.splt;
3984 BFD_ASSERT (splt != NULL && sdyn != NULL);
3985
3986 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
3987
3988 if (!ret)
3989 return ret;
3990
3991 /* Fill in the head and tail entries in the procedure linkage table. */
3992 if (splt->size > 0)
3993 {
3994 memcpy (splt->contents,
3995 ABI_64_P (output_bfd) ?
3996 tilegx64_plt0_entry : tilegx32_plt0_entry,
3997 PLT_HEADER_SIZE);
3998
3999 memcpy (splt->contents + splt->size
4000 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE,
4001 ABI_64_P (output_bfd) ?
4002 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4003 PLT_TAIL_SIZE);
4004 /* Add padding so that the plt section is a multiple of its
4005 entry size. */
4006 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE;
4007 memset (splt->contents + splt->size - pad_size, 0, pad_size);
4008
4009 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4010 = PLT_ENTRY_SIZE;
4011 }
4012 }
4013
4014 if (htab->elf.sgotplt)
4015 {
4016 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4017 {
4018 _bfd_error_handler
4019 (_("discarded output section: `%pA'"), htab->elf.sgotplt);
4020 return FALSE;
4021 }
4022
4023 if (htab->elf.sgotplt->size > 0)
4024 {
4025 /* Write the first two entries in .got.plt, needed for the dynamic
4026 linker. */
4027 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4028 htab->elf.sgotplt->contents);
4029 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4030 htab->elf.sgotplt->contents
4031 + GOT_ENTRY_SIZE (htab));
4032
4033 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4034 GOT_ENTRY_SIZE (htab);
4035 }
4036 }
4037
4038 if (htab->elf.sgot)
4039 {
4040 if (htab->elf.sgot->size > 0)
4041 {
4042 /* Set the first entry in the global offset table to the address of
4043 the dynamic section. */
4044 bfd_vma val = (sdyn ?
4045 sdyn->output_section->vma + sdyn->output_offset :
4046 0);
4047 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4048 htab->elf.sgot->contents);
4049
4050 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4051 GOT_ENTRY_SIZE (htab);
4052 }
4053 }
4054
4055 return TRUE;
4056 }
4057
4058 \f
4059
4060 /* Return address for Ith PLT stub in section PLT, for relocation REL
4061 or (bfd_vma) -1 if it should not be included. */
4062
4063 bfd_vma
4064 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4065 const arelent *rel ATTRIBUTE_UNUSED)
4066 {
4067 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4068 }
4069
4070 enum elf_reloc_type_class
4071 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4072 const asection *rel_sec ATTRIBUTE_UNUSED,
4073 const Elf_Internal_Rela *rela)
4074 {
4075 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4076 {
4077 case R_TILEGX_RELATIVE:
4078 return reloc_class_relative;
4079 case R_TILEGX_JMP_SLOT:
4080 return reloc_class_plt;
4081 case R_TILEGX_COPY:
4082 return reloc_class_copy;
4083 default:
4084 return reloc_class_normal;
4085 }
4086 }
4087
4088 int
4089 tilegx_additional_program_headers (bfd *abfd,
4090 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4091 {
4092 /* Each .intrpt section specified by the user adds another PT_LOAD
4093 header since the sections are discontiguous. */
4094 static const char intrpt_sections[4][9] =
4095 {
4096 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4097 };
4098 int count = 0;
4099 int i;
4100
4101 for (i = 0; i < 4; i++)
4102 {
4103 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4104 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4105 ++count;
4106 }
4107
4108 /* Add four "padding" headers in to leave room in case a custom linker
4109 script does something fancy. Otherwise ld complains that it ran
4110 out of program headers and refuses to link. */
4111 count += 4;
4112
4113 return count;
4114 }
4115
4116
4117 bfd_boolean
4118 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4119 {
4120 bfd *obfd = info->output_bfd;
4121 const char *targ1 = bfd_get_target (ibfd);
4122 const char *targ2 = bfd_get_target (obfd);
4123
4124 if (strcmp (targ1, targ2) != 0)
4125 {
4126 _bfd_error_handler
4127 /* xgettext:c-format */
4128 (_("%pB: cannot link together %s and %s objects"),
4129 ibfd, targ1, targ2);
4130 bfd_set_error (bfd_error_bad_value);
4131 return FALSE;
4132 }
4133
4134 return TRUE;
4135 }
GDB Binutils - Deliverables
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