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* elf32-spu.c (build_stub): Fix malloc under-allocation.
[binutils.git] / bfd / elfxx-tilegx.c
blob27e5179db433fd2b541420153e1de646a7d6564f
1 /* TILE-Gx-specific support for ELF.
2 Copyright 2011 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 "bfd.h"
22 #include "sysdep.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 2, /* size (0 = byte, 1 = short, 2 = long) */
76 32, /* bitsize */
77 FALSE, /* pc_relative */
78 0, /* bitpos */
79 complain_overflow_bitfield, /* 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 /* These relocs are currently not defined. */
494 EMPTY_HOWTO (66),
495 EMPTY_HOWTO (67),
496 EMPTY_HOWTO (68),
497 EMPTY_HOWTO (69),
498 EMPTY_HOWTO (70),
499 EMPTY_HOWTO (71),
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 /* These relocs are currently not defined. */
506 EMPTY_HOWTO (76),
507 EMPTY_HOWTO (77),
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 EMPTY_HOWTO (94),
534 EMPTY_HOWTO (95),
535 EMPTY_HOWTO (96),
536 EMPTY_HOWTO (97),
537 EMPTY_HOWTO (98),
538 EMPTY_HOWTO (99),
539
540 #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \
541 HOWTO (name, rshift, 1, 16, FALSE, 0, \
542 complain_overflow_signed, bfd_elf_generic_reloc, \
543 #name, FALSE, 0, 0xffff, TRUE)
544
545 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0),
546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0),
547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16),
548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16),
549 EMPTY_HOWTO (104),
550 EMPTY_HOWTO (105),
551
552 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont,
553 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64",
554 FALSE, 0, 0, TRUE),
555 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
556 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64",
557 FALSE, 0, -1, TRUE),
558 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont,
559 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64",
560 FALSE, 0, 0, TRUE),
561
562 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
563 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32",
564 FALSE, 0, 0, TRUE),
565 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield,
566 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32",
567 FALSE, 0, -1, TRUE),
568 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
569 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32",
570 FALSE, 0, 0, TRUE),
571
572 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */
573 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
575 27, /* bitsize */
576 TRUE, /* pc_relative */
577 0, /* bitpos */
578 complain_overflow_signed,/* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_TILEGX_TLS_GD_CALL", /* name */
581 FALSE, /* partial_inplace */
582 0, /* src_mask */
583 -1, /* dst_mask */
584 TRUE), /* pcrel_offset */
585
586 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8),
587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8),
588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8),
589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8),
590 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8),
591 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8),
592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8),
593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8),
594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8),
595 };
596
597 static reloc_howto_type tilegx_elf_howto_table2 [] =
598 {
599 /* GNU extension to record C++ vtable hierarchy */
600 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */
601 0, /* rightshift */
602 4, /* size (0 = byte, 1 = short, 2 = long) */
603 0, /* bitsize */
604 FALSE, /* pc_relative */
605 0, /* bitpos */
606 complain_overflow_dont, /* complain_on_overflow */
607 NULL, /* special_function */
608 "R_TILEGX_GNU_VTINHERIT", /* name */
609 FALSE, /* partial_inplace */
610 0, /* src_mask */
611 0, /* dst_mask */
612 FALSE), /* pcrel_offset */
613
614 /* GNU extension to record C++ vtable member usage */
615 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */
616 0, /* rightshift */
617 4, /* size (0 = byte, 1 = short, 2 = long) */
618 0, /* bitsize */
619 FALSE, /* pc_relative */
620 0, /* bitpos */
621 complain_overflow_dont, /* complain_on_overflow */
622 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
623 "R_TILEGX_GNU_VTENTRY", /* name */
624 FALSE, /* partial_inplace */
625 0, /* src_mask */
626 0, /* dst_mask */
627 FALSE), /* pcrel_offset */
628
629 };
630 \f
631 /* Map BFD reloc types to TILEGX ELF reloc types. */
632
633 typedef struct tilegx_reloc_map
634 {
635 bfd_reloc_code_real_type bfd_reloc_val;
636 unsigned int tilegx_reloc_val;
637 reloc_howto_type * table;
638 } reloc_map;
639
640 static const reloc_map tilegx_reloc_map [] =
641 {
642 #define TH_REMAP(bfd, tilegx) \
643 { bfd, tilegx, tilegx_elf_howto_table },
644
645 /* Standard relocations. */
646 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE)
647 TH_REMAP (BFD_RELOC_64, R_TILEGX_64)
648 TH_REMAP (BFD_RELOC_32, R_TILEGX_32)
649 TH_REMAP (BFD_RELOC_16, R_TILEGX_16)
650 TH_REMAP (BFD_RELOC_8, R_TILEGX_8)
651 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL)
652 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL)
653 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL)
654 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL)
655
656 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t)
657
658 /* Custom relocations. */
659 SIMPLE_REMAP (TILEGX_HW0)
660 SIMPLE_REMAP (TILEGX_HW1)
661 SIMPLE_REMAP (TILEGX_HW2)
662 SIMPLE_REMAP (TILEGX_HW3)
663 SIMPLE_REMAP (TILEGX_HW0_LAST)
664 SIMPLE_REMAP (TILEGX_HW1_LAST)
665 SIMPLE_REMAP (TILEGX_HW2_LAST)
666 SIMPLE_REMAP (TILEGX_COPY)
667 SIMPLE_REMAP (TILEGX_GLOB_DAT)
668 SIMPLE_REMAP (TILEGX_JMP_SLOT)
669 SIMPLE_REMAP (TILEGX_RELATIVE)
670 SIMPLE_REMAP (TILEGX_BROFF_X1)
671 SIMPLE_REMAP (TILEGX_JUMPOFF_X1)
672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT)
673 SIMPLE_REMAP (TILEGX_IMM8_X0)
674 SIMPLE_REMAP (TILEGX_IMM8_Y0)
675 SIMPLE_REMAP (TILEGX_IMM8_X1)
676 SIMPLE_REMAP (TILEGX_IMM8_Y1)
677 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1)
678 SIMPLE_REMAP (TILEGX_MT_IMM14_X1)
679 SIMPLE_REMAP (TILEGX_MF_IMM14_X1)
680 SIMPLE_REMAP (TILEGX_MMSTART_X0)
681 SIMPLE_REMAP (TILEGX_MMEND_X0)
682 SIMPLE_REMAP (TILEGX_SHAMT_X0)
683 SIMPLE_REMAP (TILEGX_SHAMT_X1)
684 SIMPLE_REMAP (TILEGX_SHAMT_Y0)
685 SIMPLE_REMAP (TILEGX_SHAMT_Y1)
686 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0)
687 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0)
688 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1)
689 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1)
690 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2)
691 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2)
692 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3)
693 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3)
694 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST)
695 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST)
696 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST)
697 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST)
698 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST)
699 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST)
700 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL)
701 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL)
702 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL)
703 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL)
704 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL)
705 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL)
706 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL)
707 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL)
708 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL)
709 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL)
710 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL)
711 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL)
712 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL)
713 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL)
714 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT)
715 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT)
716 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT)
717 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT)
718 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT)
719 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT)
720 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD)
721 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD)
722 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE)
723 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE)
724 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE)
725 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE)
726 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE)
727 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
728 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD)
729 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD)
730 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD)
731 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD)
732 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE)
733 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE)
734 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE)
735 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE)
736 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE)
737 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE)
738
739 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64)
740 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64)
741 SIMPLE_REMAP (TILEGX_TLS_TPOFF64)
742
743 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32)
744 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32)
745 SIMPLE_REMAP (TILEGX_TLS_TPOFF32)
746
747 SIMPLE_REMAP (TILEGX_TLS_GD_CALL)
748 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD)
749 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD)
750 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD)
751 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD)
752 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD)
753 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD)
754 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD)
755 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD)
756 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD)
757
758 #undef SIMPLE_REMAP
759 #undef TH_REMAP
760
761 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 },
762 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 },
763 };
764
765
766
767 /* The TILE-Gx linker needs to keep track of the number of relocs that it
768 decides to copy as dynamic relocs in check_relocs for each symbol.
769 This is so that it can later discard them if they are found to be
770 unnecessary. We store the information in a field extending the
771 regular ELF linker hash table. */
772
773 struct tilegx_elf_dyn_relocs
774 {
775 struct tilegx_elf_dyn_relocs *next;
776
777 /* The input section of the reloc. */
778 asection *sec;
779
780 /* Total number of relocs copied for the input section. */
781 bfd_size_type count;
782
783 /* Number of pc-relative relocs copied for the input section. */
784 bfd_size_type pc_count;
785 };
786
787 /* TILEGX ELF linker hash entry. */
788
789 struct tilegx_elf_link_hash_entry
790 {
791 struct elf_link_hash_entry elf;
792
793 /* Track dynamic relocs copied for this symbol. */
794 struct tilegx_elf_dyn_relocs *dyn_relocs;
795
796 #define GOT_UNKNOWN 0
797 #define GOT_NORMAL 1
798 #define GOT_TLS_GD 2
799 #define GOT_TLS_IE 4
800 unsigned char tls_type;
801 };
802
803 #define tilegx_elf_hash_entry(ent) \
804 ((struct tilegx_elf_link_hash_entry *)(ent))
805
806 struct _bfd_tilegx_elf_obj_tdata
807 {
808 struct elf_obj_tdata root;
809
810 /* tls_type for each local got entry. */
811 char *local_got_tls_type;
812 };
813
814 #define _bfd_tilegx_elf_tdata(abfd) \
815 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any)
816
817 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \
818 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type)
819
820 #define is_tilegx_elf(bfd) \
821 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
822 && elf_tdata (bfd) != NULL \
823 && elf_object_id (bfd) == TILEGX_ELF_DATA)
824
825 #include "elf/common.h"
826 #include "elf/internal.h"
827
828 struct tilegx_elf_link_hash_table
829 {
830 struct elf_link_hash_table elf;
831
832 int bytes_per_word;
833 int word_align_power;
834 int bytes_per_rela;
835 int dtpmod_reloc;
836 int dtpoff_reloc;
837 int tpoff_reloc;
838 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
839 bfd_vma (*r_symndx) (bfd_vma);
840 void (*put_word) (bfd *, bfd_vma, void *);
841 const char *dynamic_interpreter;
842
843 /* Short-cuts to get to dynamic linker sections. */
844 asection *sdynbss;
845 asection *srelbss;
846
847 /* Whether LE transition has been disabled for some of the
848 sections. */
849 bfd_boolean disable_le_transition;
850
851 /* Small local sym to section mapping cache. */
852 struct sym_cache sym_cache;
853 };
854
855
856 /* Get the Tile ELF linker hash table from a link_info structure. */
857 #define tilegx_elf_hash_table(p) \
858 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
859 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL)
860
861 #ifdef BFD64
862 static bfd_vma
863 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
864 bfd_vma rel_index,
865 bfd_vma type)
866 {
867 return ELF64_R_INFO (rel_index, type);
868 }
869
870 static bfd_vma
871 tilegx_elf_r_symndx_64 (bfd_vma r_info)
872 {
873 return ELF64_R_SYM (r_info);
874 }
875
876 static void
877 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
878 {
879 bfd_put_64 (abfd, val, ptr);
880 }
881 #endif /* BFD64 */
882
883 static bfd_vma
884 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
885 bfd_vma rel_index,
886 bfd_vma type)
887 {
888 return ELF32_R_INFO (rel_index, type);
889 }
890
891 static bfd_vma
892 tilegx_elf_r_symndx_32 (bfd_vma r_info)
893 {
894 return ELF32_R_SYM (r_info);
895 }
896
897 static void
898 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
899 {
900 bfd_put_32 (abfd, val, ptr);
901 }
902
903 reloc_howto_type *
904 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
905 bfd_reloc_code_real_type code)
906 {
907 unsigned int i;
908
909 for (i = ARRAY_SIZE (tilegx_reloc_map); --i;)
910 {
911 const reloc_map * entry;
912
913 entry = tilegx_reloc_map + i;
914
915 if (entry->bfd_reloc_val == code)
916 return entry->table + (entry->tilegx_reloc_val
917 - entry->table[0].type);
918 }
919
920 return NULL;
921 }
922
923 reloc_howto_type *
924 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
925 const char *r_name)
926 {
927 unsigned int i;
928
929 for (i = 0;
930 i < (sizeof (tilegx_elf_howto_table)
931 / sizeof (tilegx_elf_howto_table[0]));
932 i++)
933 if (tilegx_elf_howto_table[i].name != NULL
934 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
935 return &tilegx_elf_howto_table[i];
936
937 return NULL;
938 }
939
940 void
941 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
942 arelent *cache_ptr,
943 Elf_Internal_Rela *dst)
944 {
945 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
946
947 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
948 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
949 else if (r_type - R_TILEGX_GNU_VTINHERIT
950 <= (unsigned int) R_TILEGX_GNU_VTENTRY)
951 cache_ptr->howto
952 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
953 else
954 abort ();
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 NULL,
1031 NULL,
1032 NULL,
1033 NULL,
1034 NULL,
1035 NULL,
1036 create_Imm16_X0,
1037 create_Imm16_X1,
1038 create_Imm16_X0,
1039 create_Imm16_X1,
1040 NULL,
1041 NULL,
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 NULL,
1059 NULL,
1060 NULL,
1061 NULL,
1062 NULL,
1063 NULL,
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->dyn_relocs = NULL;
1357 eh->tls_type = GOT_UNKNOWN;
1358 }
1359
1360 return entry;
1361 }
1362
1363 /* Create a TILEGX ELF linker hash table. */
1364
1365 struct bfd_link_hash_table *
1366 tilegx_elf_link_hash_table_create (bfd *abfd)
1367 {
1368 struct tilegx_elf_link_hash_table *ret;
1369 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table);
1370
1371 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1372 if (ret == NULL)
1373 return NULL;
1374
1375 #ifdef BFD64
1376 if (ABI_64_P (abfd))
1377 {
1378 ret->bytes_per_word = 8;
1379 ret->word_align_power = 3;
1380 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1381 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1382 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1383 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1384 ret->r_info = tilegx_elf_r_info_64;
1385 ret->r_symndx = tilegx_elf_r_symndx_64;
1386 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1387 ret->put_word = tilegx_put_word_64;
1388 }
1389 else
1390 #endif
1391 {
1392 ret->bytes_per_word = 4;
1393 ret->word_align_power = 2;
1394 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1395 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1396 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1397 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1398 ret->r_info = tilegx_elf_r_info_32;
1399 ret->r_symndx = tilegx_elf_r_symndx_32;
1400 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1401 ret->put_word = tilegx_put_word_32;
1402 }
1403
1404 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1405 sizeof (struct tilegx_elf_link_hash_entry),
1406 TILEGX_ELF_DATA))
1407 {
1408 free (ret);
1409 return NULL;
1410 }
1411
1412 return &ret->elf.root;
1413 }
1414
1415 /* Create the .got section. */
1416
1417 static bfd_boolean
1418 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1419 {
1420 flagword flags;
1421 asection *s, *s_got;
1422 struct elf_link_hash_entry *h;
1423 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1424 struct elf_link_hash_table *htab = elf_hash_table (info);
1425
1426 /* This function may be called more than once. */
1427 s = bfd_get_section_by_name (abfd, ".got");
1428 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
1429 return TRUE;
1430
1431 flags = bed->dynamic_sec_flags;
1432
1433 s = bfd_make_section_with_flags (abfd,
1434 (bed->rela_plts_and_copies_p
1435 ? ".rela.got" : ".rel.got"),
1436 (bed->dynamic_sec_flags
1437 | SEC_READONLY));
1438 if (s == NULL
1439 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1440 return FALSE;
1441 htab->srelgot = s;
1442
1443 s = s_got = bfd_make_section_with_flags (abfd, ".got", flags);
1444 if (s == NULL
1445 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1446 return FALSE;
1447 htab->sgot = s;
1448
1449 /* The first bit of the global offset table is the header. */
1450 s->size += bed->got_header_size;
1451
1452 if (bed->want_got_plt)
1453 {
1454 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
1455 if (s == NULL
1456 || !bfd_set_section_alignment (abfd, s,
1457 bed->s->log_file_align))
1458 return FALSE;
1459 htab->sgotplt = s;
1460
1461 /* Reserve room for the header. */
1462 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1463 }
1464
1465 if (bed->want_got_sym)
1466 {
1467 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1468 section. We don't do this in the linker script because we don't want
1469 to define the symbol if we are not creating a global offset
1470 table. */
1471 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1472 "_GLOBAL_OFFSET_TABLE_");
1473 elf_hash_table (info)->hgot = h;
1474 if (h == NULL)
1475 return FALSE;
1476 }
1477
1478 return TRUE;
1479 }
1480
1481 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1482 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1483 hash table. */
1484
1485 bfd_boolean
1486 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1487 struct bfd_link_info *info)
1488 {
1489 struct tilegx_elf_link_hash_table *htab;
1490
1491 htab = tilegx_elf_hash_table (info);
1492 BFD_ASSERT (htab != NULL);
1493
1494 if (!tilegx_elf_create_got_section (dynobj, info))
1495 return FALSE;
1496
1497 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1498 return FALSE;
1499
1500 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1501 if (!info->shared)
1502 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1503
1504 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1505 || (!info->shared && !htab->srelbss))
1506 abort ();
1507
1508 return TRUE;
1509 }
1510
1511 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1512
1513 void
1514 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1515 struct elf_link_hash_entry *dir,
1516 struct elf_link_hash_entry *ind)
1517 {
1518 struct tilegx_elf_link_hash_entry *edir, *eind;
1519
1520 edir = (struct tilegx_elf_link_hash_entry *) dir;
1521 eind = (struct tilegx_elf_link_hash_entry *) ind;
1522
1523 if (eind->dyn_relocs != NULL)
1524 {
1525 if (edir->dyn_relocs != NULL)
1526 {
1527 struct tilegx_elf_dyn_relocs **pp;
1528 struct tilegx_elf_dyn_relocs *p;
1529
1530 /* Add reloc counts against the indirect sym to the direct sym
1531 list. Merge any entries against the same section. */
1532 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1533 {
1534 struct tilegx_elf_dyn_relocs *q;
1535
1536 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1537 if (q->sec == p->sec)
1538 {
1539 q->pc_count += p->pc_count;
1540 q->count += p->count;
1541 *pp = p->next;
1542 break;
1543 }
1544 if (q == NULL)
1545 pp = &p->next;
1546 }
1547 *pp = edir->dyn_relocs;
1548 }
1549
1550 edir->dyn_relocs = eind->dyn_relocs;
1551 eind->dyn_relocs = NULL;
1552 }
1553
1554 if (ind->root.type == bfd_link_hash_indirect
1555 && dir->got.refcount <= 0)
1556 {
1557 edir->tls_type = eind->tls_type;
1558 eind->tls_type = GOT_UNKNOWN;
1559 }
1560 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1561 }
1562
1563 static int
1564 tilegx_tls_translate_to_le (int r_type)
1565 {
1566 switch (r_type)
1567 {
1568 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1569 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1570 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1571
1572 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1573 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1574 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1575
1576 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1577 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1578 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1579
1580 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1581 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1582 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1583
1584 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1585 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1586 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1587
1588 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1589 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1590 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1591 }
1592 return r_type;
1593 }
1594
1595 static int
1596 tilegx_tls_translate_to_ie (int r_type)
1597 {
1598 switch (r_type)
1599 {
1600 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1601 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1602 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1603
1604 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1605 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1606 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1607
1608 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1609 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1610 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1611
1612 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1613 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1614 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1615
1616 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1617 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1618 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1619
1620 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1621 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1622 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1623 }
1624 return r_type;
1625 }
1626
1627 static int
1628 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1629 int is_local, bfd_boolean disable_le_transition)
1630 {
1631 if (info->shared)
1632 return r_type;
1633
1634 if (is_local && !disable_le_transition)
1635 return tilegx_tls_translate_to_le (r_type);
1636 else
1637 return tilegx_tls_translate_to_ie (r_type);
1638 }
1639
1640 /* Look through the relocs for a section during the first phase, and
1641 allocate space in the global offset table or procedure linkage
1642 table. */
1643
1644 bfd_boolean
1645 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1646 asection *sec, const Elf_Internal_Rela *relocs)
1647 {
1648 struct tilegx_elf_link_hash_table *htab;
1649 Elf_Internal_Shdr *symtab_hdr;
1650 struct elf_link_hash_entry **sym_hashes;
1651 const Elf_Internal_Rela *rel;
1652 const Elf_Internal_Rela *rel_end;
1653 asection *sreloc;
1654 int num_relocs;
1655 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE;
1656
1657 if (info->relocatable)
1658 return TRUE;
1659
1660 htab = tilegx_elf_hash_table (info);
1661 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1662 sym_hashes = elf_sym_hashes (abfd);
1663
1664 sreloc = NULL;
1665
1666 num_relocs = sec->reloc_count;
1667
1668 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1669
1670 if (htab->elf.dynobj == NULL)
1671 htab->elf.dynobj = abfd;
1672
1673 rel_end = relocs + num_relocs;
1674
1675 /* Check whether to do optimization to transform TLS GD/IE
1676 referehces to TLS LE. We disable it if we're linking with old
1677 TLS code sequences that do not support such optimization. Old
1678 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1679 no tls_add relocations. */
1680 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1681 {
1682 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1683 switch (r_type)
1684 {
1685 case R_TILEGX_TLS_GD_CALL:
1686 case R_TILEGX_TLS_IE_LOAD:
1687 has_tls_gd_or_ie = TRUE;
1688 break;
1689 case R_TILEGX_IMM8_X0_TLS_ADD:
1690 case R_TILEGX_IMM8_Y0_TLS_ADD:
1691 case R_TILEGX_IMM8_X1_TLS_ADD:
1692 case R_TILEGX_IMM8_Y1_TLS_ADD:
1693 has_tls_add = TRUE;
1694 break;
1695 }
1696 }
1697
1698 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1699 htab->disable_le_transition |= sec->sec_flg0;
1700
1701 for (rel = relocs; rel < rel_end; rel++)
1702 {
1703 unsigned int r_type;
1704 unsigned long r_symndx;
1705 struct elf_link_hash_entry *h;
1706 int tls_type;
1707
1708 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1709 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1710
1711 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1712 {
1713 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1714 abfd, r_symndx);
1715 return FALSE;
1716 }
1717
1718 if (r_symndx < symtab_hdr->sh_info)
1719 h = NULL;
1720 else
1721 {
1722 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1723 while (h->root.type == bfd_link_hash_indirect
1724 || h->root.type == bfd_link_hash_warning)
1725 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1726 }
1727
1728 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1729 sec->sec_flg0);
1730 switch (r_type)
1731 {
1732 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1733 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1734 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1735 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1736 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1737 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1738 if (info->shared)
1739 goto r_tilegx_plt32;
1740 break;
1741
1742 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1743 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1744 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1745 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1746 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1747 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1748 BFD_ASSERT (info->shared);
1749 tls_type = GOT_TLS_GD;
1750 goto have_got_reference;
1751
1752 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1753 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1754 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1755 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1756 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1757 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1758 tls_type = GOT_TLS_IE;
1759 if (info->shared)
1760 info->flags |= DF_STATIC_TLS;
1761 goto have_got_reference;
1762
1763 case R_TILEGX_IMM16_X0_HW0_GOT:
1764 case R_TILEGX_IMM16_X1_HW0_GOT:
1765 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1766 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1767 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1768 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1769 tls_type = GOT_NORMAL;
1770 /* Fall Through */
1771
1772 have_got_reference:
1773 /* This symbol requires a global offset table entry. */
1774 {
1775 int old_tls_type;
1776
1777 if (h != NULL)
1778 {
1779 h->got.refcount += 1;
1780 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1781 }
1782 else
1783 {
1784 bfd_signed_vma *local_got_refcounts;
1785
1786 /* This is a global offset table entry for a local symbol. */
1787 local_got_refcounts = elf_local_got_refcounts (abfd);
1788 if (local_got_refcounts == NULL)
1789 {
1790 bfd_size_type size;
1791
1792 size = symtab_hdr->sh_info;
1793 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1794 local_got_refcounts = ((bfd_signed_vma *)
1795 bfd_zalloc (abfd, size));
1796 if (local_got_refcounts == NULL)
1797 return FALSE;
1798 elf_local_got_refcounts (abfd) = local_got_refcounts;
1799 _bfd_tilegx_elf_local_got_tls_type (abfd)
1800 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1801 }
1802 local_got_refcounts[r_symndx] += 1;
1803 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1804 }
1805
1806 /* If a TLS symbol is accessed using IE at least once,
1807 there is no point to use dynamic model for it. */
1808 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1809 && (old_tls_type != GOT_TLS_GD
1810 || tls_type != GOT_TLS_IE))
1811 {
1812 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1813 tls_type = old_tls_type;
1814 else
1815 {
1816 (*_bfd_error_handler)
1817 (_("%B: `%s' accessed both as normal and thread local symbol"),
1818 abfd, h ? h->root.root.string : "<local>");
1819 return FALSE;
1820 }
1821 }
1822
1823 if (old_tls_type != tls_type)
1824 {
1825 if (h != NULL)
1826 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1827 else
1828 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1829 }
1830 }
1831
1832 if (htab->elf.sgot == NULL)
1833 {
1834 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1835 return FALSE;
1836 }
1837 break;
1838
1839 case R_TILEGX_TLS_GD_CALL:
1840 if (info->shared)
1841 {
1842 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1843 against __tls_get_addr. */
1844 struct bfd_link_hash_entry *bh = NULL;
1845 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1846 "__tls_get_addr", 0,
1847 bfd_und_section_ptr, 0,
1848 NULL, FALSE, FALSE,
1849 &bh))
1850 return FALSE;
1851 h = (struct elf_link_hash_entry *) bh;
1852 }
1853 else
1854 break;
1855 /* Fall through */
1856
1857 case R_TILEGX_JUMPOFF_X1_PLT:
1858 /* This symbol requires a procedure linkage table entry. We
1859 actually build the entry in adjust_dynamic_symbol,
1860 because this might be a case of linking PIC code without
1861 linking in any dynamic objects, in which case we don't
1862 need to generate a procedure linkage table after all. */
1863
1864 if (h != NULL)
1865 {
1866 h->needs_plt = 1;
1867 h->plt.refcount += 1;
1868 }
1869 break;
1870
1871 case R_TILEGX_64_PCREL:
1872 case R_TILEGX_32_PCREL:
1873 case R_TILEGX_16_PCREL:
1874 case R_TILEGX_8_PCREL:
1875 case R_TILEGX_IMM16_X0_HW0_PCREL:
1876 case R_TILEGX_IMM16_X1_HW0_PCREL:
1877 case R_TILEGX_IMM16_X0_HW1_PCREL:
1878 case R_TILEGX_IMM16_X1_HW1_PCREL:
1879 case R_TILEGX_IMM16_X0_HW2_PCREL:
1880 case R_TILEGX_IMM16_X1_HW2_PCREL:
1881 case R_TILEGX_IMM16_X0_HW3_PCREL:
1882 case R_TILEGX_IMM16_X1_HW3_PCREL:
1883 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1884 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1885 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1886 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1887 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1888 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1889 if (h != NULL)
1890 h->non_got_ref = 1;
1891
1892 if (h != NULL
1893 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1894 break;
1895 /* Fall through. */
1896
1897 case R_TILEGX_64:
1898 case R_TILEGX_32:
1899 case R_TILEGX_16:
1900 case R_TILEGX_8:
1901 case R_TILEGX_HW0:
1902 case R_TILEGX_HW1:
1903 case R_TILEGX_HW2:
1904 case R_TILEGX_HW3:
1905 case R_TILEGX_HW0_LAST:
1906 case R_TILEGX_HW1_LAST:
1907 case R_TILEGX_HW2_LAST:
1908 case R_TILEGX_COPY:
1909 case R_TILEGX_GLOB_DAT:
1910 case R_TILEGX_JMP_SLOT:
1911 case R_TILEGX_RELATIVE:
1912 case R_TILEGX_BROFF_X1:
1913 case R_TILEGX_JUMPOFF_X1:
1914 case R_TILEGX_IMM8_X0:
1915 case R_TILEGX_IMM8_Y0:
1916 case R_TILEGX_IMM8_X1:
1917 case R_TILEGX_IMM8_Y1:
1918 case R_TILEGX_DEST_IMM8_X1:
1919 case R_TILEGX_MT_IMM14_X1:
1920 case R_TILEGX_MF_IMM14_X1:
1921 case R_TILEGX_MMSTART_X0:
1922 case R_TILEGX_MMEND_X0:
1923 case R_TILEGX_SHAMT_X0:
1924 case R_TILEGX_SHAMT_X1:
1925 case R_TILEGX_SHAMT_Y0:
1926 case R_TILEGX_SHAMT_Y1:
1927 case R_TILEGX_IMM16_X0_HW0:
1928 case R_TILEGX_IMM16_X1_HW0:
1929 case R_TILEGX_IMM16_X0_HW1:
1930 case R_TILEGX_IMM16_X1_HW1:
1931 case R_TILEGX_IMM16_X0_HW2:
1932 case R_TILEGX_IMM16_X1_HW2:
1933 case R_TILEGX_IMM16_X0_HW3:
1934 case R_TILEGX_IMM16_X1_HW3:
1935 case R_TILEGX_IMM16_X0_HW0_LAST:
1936 case R_TILEGX_IMM16_X1_HW0_LAST:
1937 case R_TILEGX_IMM16_X0_HW1_LAST:
1938 case R_TILEGX_IMM16_X1_HW1_LAST:
1939 case R_TILEGX_IMM16_X0_HW2_LAST:
1940 case R_TILEGX_IMM16_X1_HW2_LAST:
1941 if (h != NULL)
1942 h->non_got_ref = 1;
1943
1944 r_tilegx_plt32:
1945 if (h != NULL && !info->shared)
1946 {
1947 /* We may need a .plt entry if the function this reloc
1948 refers to is in a shared lib. */
1949 h->plt.refcount += 1;
1950 }
1951
1952 /* If we are creating a shared library, and this is a reloc
1953 against a global symbol, or a non PC relative reloc
1954 against a local symbol, then we need to copy the reloc
1955 into the shared library. However, if we are linking with
1956 -Bsymbolic, we do not need to copy a reloc against a
1957 global symbol which is defined in an object we are
1958 including in the link (i.e., DEF_REGULAR is set). At
1959 this point we have not seen all the input files, so it is
1960 possible that DEF_REGULAR is not set now but will be set
1961 later (it is never cleared). In case of a weak definition,
1962 DEF_REGULAR may be cleared later by a strong definition in
1963 a shared library. We account for that possibility below by
1964 storing information in the relocs_copied field of the hash
1965 table entry. A similar situation occurs when creating
1966 shared libraries and symbol visibility changes render the
1967 symbol local.
1968
1969 If on the other hand, we are creating an executable, we
1970 may need to keep relocations for symbols satisfied by a
1971 dynamic library if we manage to avoid copy relocs for the
1972 symbol. */
1973 if ((info->shared
1974 && (sec->flags & SEC_ALLOC) != 0
1975 && (! tilegx_elf_howto_table[r_type].pc_relative
1976 || (h != NULL
1977 && (! info->symbolic
1978 || h->root.type == bfd_link_hash_defweak
1979 || !h->def_regular))))
1980 || (!info->shared
1981 && (sec->flags & SEC_ALLOC) != 0
1982 && h != NULL
1983 && (h->root.type == bfd_link_hash_defweak
1984 || !h->def_regular)))
1985 {
1986 struct tilegx_elf_dyn_relocs *p;
1987 struct tilegx_elf_dyn_relocs **head;
1988
1989 /* When creating a shared object, we must copy these
1990 relocs into the output file. We create a reloc
1991 section in dynobj and make room for the reloc. */
1992 if (sreloc == NULL)
1993 {
1994 sreloc = _bfd_elf_make_dynamic_reloc_section
1995 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
1996 /*rela?*/ TRUE);
1997
1998 if (sreloc == NULL)
1999 return FALSE;
2000 }
2001
2002 /* If this is a global symbol, we count the number of
2003 relocations we need for this symbol. */
2004 if (h != NULL)
2005 head =
2006 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs;
2007 else
2008 {
2009 /* Track dynamic relocs needed for local syms too.
2010 We really need local syms available to do this
2011 easily. Oh well. */
2012
2013 asection *s;
2014 void *vpp;
2015 Elf_Internal_Sym *isym;
2016
2017 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2018 abfd, r_symndx);
2019 if (isym == NULL)
2020 return FALSE;
2021
2022 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2023 if (s == NULL)
2024 s = sec;
2025
2026 vpp = &elf_section_data (s)->local_dynrel;
2027 head = (struct tilegx_elf_dyn_relocs **) vpp;
2028 }
2029
2030 p = *head;
2031 if (p == NULL || p->sec != sec)
2032 {
2033 bfd_size_type amt = sizeof *p;
2034 p = ((struct tilegx_elf_dyn_relocs *)
2035 bfd_alloc (htab->elf.dynobj, amt));
2036 if (p == NULL)
2037 return FALSE;
2038 p->next = *head;
2039 *head = p;
2040 p->sec = sec;
2041 p->count = 0;
2042 p->pc_count = 0;
2043 }
2044
2045 p->count += 1;
2046 if (tilegx_elf_howto_table[r_type].pc_relative)
2047 p->pc_count += 1;
2048 }
2049
2050 break;
2051
2052 case R_TILEGX_GNU_VTINHERIT:
2053 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2054 return FALSE;
2055 break;
2056
2057 case R_TILEGX_GNU_VTENTRY:
2058 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2059 return FALSE;
2060 break;
2061
2062 default:
2063 break;
2064 }
2065 }
2066
2067 return TRUE;
2068 }
2069
2070 \f
2071 asection *
2072 tilegx_elf_gc_mark_hook (asection *sec,
2073 struct bfd_link_info *info,
2074 Elf_Internal_Rela *rel,
2075 struct elf_link_hash_entry *h,
2076 Elf_Internal_Sym *sym)
2077 {
2078 if (h != NULL)
2079 {
2080 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2081 {
2082 case R_TILEGX_GNU_VTINHERIT:
2083 case R_TILEGX_GNU_VTENTRY:
2084 break;
2085 }
2086 }
2087
2088 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2089 }
2090
2091 /* Update the got entry reference counts for the section being removed. */
2092 bfd_boolean
2093 tilegx_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
2094 asection *sec, const Elf_Internal_Rela *relocs)
2095 {
2096 struct tilegx_elf_link_hash_table *htab;
2097 Elf_Internal_Shdr *symtab_hdr;
2098 struct elf_link_hash_entry **sym_hashes;
2099 bfd_signed_vma *local_got_refcounts;
2100 const Elf_Internal_Rela *rel, *relend;
2101
2102 if (info->relocatable)
2103 return TRUE;
2104
2105 BFD_ASSERT (is_tilegx_elf (abfd) || sec->reloc_count == 0);
2106
2107 elf_section_data (sec)->local_dynrel = NULL;
2108
2109 htab = tilegx_elf_hash_table (info);
2110 BFD_ASSERT (htab != NULL);
2111 symtab_hdr = &elf_symtab_hdr (abfd);
2112 sym_hashes = elf_sym_hashes (abfd);
2113 local_got_refcounts = elf_local_got_refcounts (abfd);
2114
2115 relend = relocs + sec->reloc_count;
2116 for (rel = relocs; rel < relend; rel++)
2117 {
2118 unsigned long r_symndx;
2119 unsigned int r_type;
2120 struct elf_link_hash_entry *h = NULL;
2121
2122 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2123 if (r_symndx >= symtab_hdr->sh_info)
2124 {
2125 struct tilegx_elf_link_hash_entry *eh;
2126 struct tilegx_elf_dyn_relocs **pp;
2127 struct tilegx_elf_dyn_relocs *p;
2128
2129 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2130 while (h->root.type == bfd_link_hash_indirect
2131 || h->root.type == bfd_link_hash_warning)
2132 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2133 eh = (struct tilegx_elf_link_hash_entry *) h;
2134 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2135 if (p->sec == sec)
2136 {
2137 /* Everything must go for SEC. */
2138 *pp = p->next;
2139 break;
2140 }
2141 }
2142
2143 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2144 r_type = tilegx_elf_tls_transition (info, r_type, h != NULL,
2145 sec->sec_flg0);
2146 switch (r_type)
2147 {
2148 case R_TILEGX_IMM16_X0_HW0_GOT:
2149 case R_TILEGX_IMM16_X1_HW0_GOT:
2150 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
2151 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
2152 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
2153 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
2154 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
2155 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
2156 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
2157 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
2158 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
2159 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
2160 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
2161 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
2162 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
2163 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
2164 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
2165 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
2166 if (h != NULL)
2167 {
2168 if (h->got.refcount > 0)
2169 h->got.refcount--;
2170 }
2171 else
2172 {
2173 if (local_got_refcounts &&
2174 local_got_refcounts[r_symndx] > 0)
2175 local_got_refcounts[r_symndx]--;
2176 }
2177 break;
2178
2179 case R_TILEGX_64_PCREL:
2180 case R_TILEGX_32_PCREL:
2181 case R_TILEGX_16_PCREL:
2182 case R_TILEGX_8_PCREL:
2183 case R_TILEGX_IMM16_X0_HW0_PCREL:
2184 case R_TILEGX_IMM16_X1_HW0_PCREL:
2185 case R_TILEGX_IMM16_X0_HW1_PCREL:
2186 case R_TILEGX_IMM16_X1_HW1_PCREL:
2187 case R_TILEGX_IMM16_X0_HW2_PCREL:
2188 case R_TILEGX_IMM16_X1_HW2_PCREL:
2189 case R_TILEGX_IMM16_X0_HW3_PCREL:
2190 case R_TILEGX_IMM16_X1_HW3_PCREL:
2191 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
2192 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
2193 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
2194 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
2195 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
2196 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
2197 if (h != NULL
2198 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2199 break;
2200 /* Fall through. */
2201
2202 case R_TILEGX_64:
2203 case R_TILEGX_32:
2204 case R_TILEGX_16:
2205 case R_TILEGX_8:
2206 case R_TILEGX_HW0:
2207 case R_TILEGX_HW1:
2208 case R_TILEGX_HW2:
2209 case R_TILEGX_HW3:
2210 case R_TILEGX_HW0_LAST:
2211 case R_TILEGX_HW1_LAST:
2212 case R_TILEGX_HW2_LAST:
2213 case R_TILEGX_COPY:
2214 case R_TILEGX_GLOB_DAT:
2215 case R_TILEGX_JMP_SLOT:
2216 case R_TILEGX_RELATIVE:
2217 case R_TILEGX_BROFF_X1:
2218 case R_TILEGX_JUMPOFF_X1:
2219 case R_TILEGX_IMM8_X0:
2220 case R_TILEGX_IMM8_Y0:
2221 case R_TILEGX_IMM8_X1:
2222 case R_TILEGX_IMM8_Y1:
2223 case R_TILEGX_DEST_IMM8_X1:
2224 case R_TILEGX_MT_IMM14_X1:
2225 case R_TILEGX_MF_IMM14_X1:
2226 case R_TILEGX_MMSTART_X0:
2227 case R_TILEGX_MMEND_X0:
2228 case R_TILEGX_SHAMT_X0:
2229 case R_TILEGX_SHAMT_X1:
2230 case R_TILEGX_SHAMT_Y0:
2231 case R_TILEGX_SHAMT_Y1:
2232 case R_TILEGX_IMM16_X0_HW0:
2233 case R_TILEGX_IMM16_X1_HW0:
2234 case R_TILEGX_IMM16_X0_HW1:
2235 case R_TILEGX_IMM16_X1_HW1:
2236 case R_TILEGX_IMM16_X0_HW2:
2237 case R_TILEGX_IMM16_X1_HW2:
2238 case R_TILEGX_IMM16_X0_HW3:
2239 case R_TILEGX_IMM16_X1_HW3:
2240 case R_TILEGX_IMM16_X0_HW0_LAST:
2241 case R_TILEGX_IMM16_X1_HW0_LAST:
2242 case R_TILEGX_IMM16_X0_HW1_LAST:
2243 case R_TILEGX_IMM16_X1_HW1_LAST:
2244 case R_TILEGX_IMM16_X0_HW2_LAST:
2245 case R_TILEGX_IMM16_X1_HW2_LAST:
2246 if (info->shared)
2247 break;
2248 /* Fall through. */
2249
2250 case R_TILEGX_JUMPOFF_X1_PLT:
2251 if (h != NULL)
2252 {
2253 if (h->plt.refcount > 0)
2254 h->plt.refcount--;
2255 }
2256 break;
2257
2258 default:
2259 break;
2260 }
2261 }
2262
2263 return TRUE;
2264 }
2265
2266 /* Adjust a symbol defined by a dynamic object and referenced by a
2267 regular object. The current definition is in some section of the
2268 dynamic object, but we're not including those sections. We have to
2269 change the definition to something the rest of the link can
2270 understand. */
2271
2272 bfd_boolean
2273 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2274 struct elf_link_hash_entry *h)
2275 {
2276 struct tilegx_elf_link_hash_table *htab;
2277 struct tilegx_elf_link_hash_entry * eh;
2278 struct tilegx_elf_dyn_relocs *p;
2279 bfd *dynobj;
2280 asection *s;
2281
2282 htab = tilegx_elf_hash_table (info);
2283 BFD_ASSERT (htab != NULL);
2284
2285 dynobj = htab->elf.dynobj;
2286
2287 /* Make sure we know what is going on here. */
2288 BFD_ASSERT (dynobj != NULL
2289 && (h->needs_plt
2290 || h->u.weakdef != NULL
2291 || (h->def_dynamic
2292 && h->ref_regular
2293 && !h->def_regular)));
2294
2295 /* If this is a function, put it in the procedure linkage table. We
2296 will fill in the contents of the procedure linkage table later
2297 (although we could actually do it here). */
2298 if (h->type == STT_FUNC || h->needs_plt)
2299 {
2300 if (h->plt.refcount <= 0
2301 || SYMBOL_CALLS_LOCAL (info, h)
2302 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2303 && h->root.type == bfd_link_hash_undefweak))
2304 {
2305 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2306 reloc in an input file, but the symbol was never referred
2307 to by a dynamic object, or if all references were garbage
2308 collected. In such a case, we don't actually need to build
2309 a procedure linkage table, and we can just do a
2310 R_TILEGX_JUMPOFF_X1 relocation instead. */
2311 h->plt.offset = (bfd_vma) -1;
2312 h->needs_plt = 0;
2313 }
2314
2315 return TRUE;
2316 }
2317 else
2318 h->plt.offset = (bfd_vma) -1;
2319
2320 /* If this is a weak symbol, and there is a real definition, the
2321 processor independent code will have arranged for us to see the
2322 real definition first, and we can just use the same value. */
2323 if (h->u.weakdef != NULL)
2324 {
2325 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2326 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2327 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2328 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2329 return TRUE;
2330 }
2331
2332 /* This is a reference to a symbol defined by a dynamic object which
2333 is not a function. */
2334
2335 /* If we are creating a shared library, we must presume that the
2336 only references to the symbol are via the global offset table.
2337 For such cases we need not do anything here; the relocations will
2338 be handled correctly by relocate_section. */
2339 if (info->shared)
2340 return TRUE;
2341
2342 /* If there are no references to this symbol that do not use the
2343 GOT, we don't need to generate a copy reloc. */
2344 if (!h->non_got_ref)
2345 return TRUE;
2346
2347 /* If -z nocopyreloc was given, we won't generate them either. */
2348 if (info->nocopyreloc)
2349 {
2350 h->non_got_ref = 0;
2351 return TRUE;
2352 }
2353
2354 eh = (struct tilegx_elf_link_hash_entry *) h;
2355 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2356 {
2357 s = p->sec->output_section;
2358 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2359 break;
2360 }
2361
2362 /* If we didn't find any dynamic relocs in read-only sections, then
2363 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2364 if (p == NULL)
2365 {
2366 h->non_got_ref = 0;
2367 return TRUE;
2368 }
2369
2370 if (h->size == 0)
2371 {
2372 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2373 h->root.root.string);
2374 return TRUE;
2375 }
2376
2377 /* We must allocate the symbol in our .dynbss section, which will
2378 become part of the .bss section of the executable. There will be
2379 an entry for this symbol in the .dynsym section. The dynamic
2380 object will contain position independent code, so all references
2381 from the dynamic object to this symbol will go through the global
2382 offset table. The dynamic linker will use the .dynsym entry to
2383 determine the address it must put in the global offset table, so
2384 both the dynamic object and the regular object will refer to the
2385 same memory location for the variable. */
2386
2387 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2388 to copy the initial value out of the dynamic object and into the
2389 runtime process image. We need to remember the offset into the
2390 .rel.bss section we are going to use. */
2391 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2392 {
2393 htab->srelbss->size += TILEGX_ELF_RELA_BYTES (htab);
2394 h->needs_copy = 1;
2395 }
2396
2397 return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss);
2398 }
2399
2400 /* Allocate space in .plt, .got and associated reloc sections for
2401 dynamic relocs. */
2402
2403 static bfd_boolean
2404 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2405 {
2406 struct bfd_link_info *info;
2407 struct tilegx_elf_link_hash_table *htab;
2408 struct tilegx_elf_link_hash_entry *eh;
2409 struct tilegx_elf_dyn_relocs *p;
2410
2411 if (h->root.type == bfd_link_hash_indirect)
2412 return TRUE;
2413
2414 info = (struct bfd_link_info *) inf;
2415 htab = tilegx_elf_hash_table (info);
2416 BFD_ASSERT (htab != NULL);
2417
2418 if (htab->elf.dynamic_sections_created
2419 && h->plt.refcount > 0)
2420 {
2421 /* Make sure this symbol is output as a dynamic symbol.
2422 Undefined weak syms won't yet be marked as dynamic. */
2423 if (h->dynindx == -1
2424 && !h->forced_local)
2425 {
2426 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2427 return FALSE;
2428 }
2429
2430 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2431 {
2432 asection *s = htab->elf.splt;
2433
2434 /* Allocate room for the header and tail. */
2435 if (s->size == 0)
2436 {
2437 s->size = PLT_HEADER_SIZE + PLT_TAIL_SIZE;
2438 }
2439
2440 h->plt.offset = s->size - PLT_TAIL_SIZE;
2441
2442 /* If this symbol is not defined in a regular file, and we are
2443 not generating a shared library, then set the symbol to this
2444 location in the .plt. This is required to make function
2445 pointers compare as equal between the normal executable and
2446 the shared library. */
2447 if (! info->shared
2448 && !h->def_regular)
2449 {
2450 h->root.u.def.section = s;
2451 h->root.u.def.value = h->plt.offset;
2452 }
2453
2454 /* Make room for this entry. */
2455 s->size += PLT_ENTRY_SIZE;
2456
2457 /* We also need to make an entry in the .got.plt section. */
2458 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2459
2460 /* We also need to make an entry in the .rela.plt section. */
2461 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2462 }
2463 else
2464 {
2465 h->plt.offset = (bfd_vma) -1;
2466 h->needs_plt = 0;
2467 }
2468 }
2469 else
2470 {
2471 h->plt.offset = (bfd_vma) -1;
2472 h->needs_plt = 0;
2473 }
2474
2475 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2476 requiring no TLS entry. */
2477 if (h->got.refcount > 0
2478 && !htab->disable_le_transition
2479 && !info->shared
2480 && h->dynindx == -1
2481 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2482 h->got.offset = (bfd_vma) -1;
2483 else if (h->got.refcount > 0)
2484 {
2485 asection *s;
2486 bfd_boolean dyn;
2487 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2488
2489 /* Make sure this symbol is output as a dynamic symbol.
2490 Undefined weak syms won't yet be marked as dynamic. */
2491 if (h->dynindx == -1
2492 && !h->forced_local)
2493 {
2494 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2495 return FALSE;
2496 }
2497
2498 s = htab->elf.sgot;
2499 h->got.offset = s->size;
2500 s->size += TILEGX_ELF_WORD_BYTES (htab);
2501 /* TLS_GD entries need 2 consecutive GOT slots. */
2502 if (tls_type == GOT_TLS_GD)
2503 s->size += TILEGX_ELF_WORD_BYTES (htab);
2504 dyn = htab->elf.dynamic_sections_created;
2505 /* TLS_IE needs one dynamic relocation,
2506 TLS_GD needs two if local symbol and two if global. */
2507 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2508 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2509 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2510 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2511 }
2512 else
2513 h->got.offset = (bfd_vma) -1;
2514
2515 eh = (struct tilegx_elf_link_hash_entry *) h;
2516 if (eh->dyn_relocs == NULL)
2517 return TRUE;
2518
2519 /* In the shared -Bsymbolic case, discard space allocated for
2520 dynamic pc-relative relocs against symbols which turn out to be
2521 defined in regular objects. For the normal shared case, discard
2522 space for pc-relative relocs that have become local due to symbol
2523 visibility changes. */
2524
2525 if (info->shared)
2526 {
2527 if (SYMBOL_CALLS_LOCAL (info, h))
2528 {
2529 struct tilegx_elf_dyn_relocs **pp;
2530
2531 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2532 {
2533 p->count -= p->pc_count;
2534 p->pc_count = 0;
2535 if (p->count == 0)
2536 *pp = p->next;
2537 else
2538 pp = &p->next;
2539 }
2540 }
2541
2542 /* Also discard relocs on undefined weak syms with non-default
2543 visibility. */
2544 if (eh->dyn_relocs != NULL
2545 && h->root.type == bfd_link_hash_undefweak)
2546 {
2547 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2548 eh->dyn_relocs = NULL;
2549
2550 /* Make sure undefined weak symbols are output as a dynamic
2551 symbol in PIEs. */
2552 else if (h->dynindx == -1
2553 && !h->forced_local)
2554 {
2555 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2556 return FALSE;
2557 }
2558 }
2559 }
2560 else
2561 {
2562 /* For the non-shared case, discard space for relocs against
2563 symbols which turn out to need copy relocs or are not
2564 dynamic. */
2565
2566 if (!h->non_got_ref
2567 && ((h->def_dynamic
2568 && !h->def_regular)
2569 || (htab->elf.dynamic_sections_created
2570 && (h->root.type == bfd_link_hash_undefweak
2571 || h->root.type == bfd_link_hash_undefined))))
2572 {
2573 /* Make sure this symbol is output as a dynamic symbol.
2574 Undefined weak syms won't yet be marked as dynamic. */
2575 if (h->dynindx == -1
2576 && !h->forced_local)
2577 {
2578 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2579 return FALSE;
2580 }
2581
2582 /* If that succeeded, we know we'll be keeping all the
2583 relocs. */
2584 if (h->dynindx != -1)
2585 goto keep;
2586 }
2587
2588 eh->dyn_relocs = NULL;
2589
2590 keep: ;
2591 }
2592
2593 /* Finally, allocate space. */
2594 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2595 {
2596 asection *sreloc = elf_section_data (p->sec)->sreloc;
2597 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2598 }
2599
2600 return TRUE;
2601 }
2602
2603 /* Find any dynamic relocs that apply to read-only sections. */
2604
2605 static bfd_boolean
2606 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2607 {
2608 struct tilegx_elf_link_hash_entry *eh;
2609 struct tilegx_elf_dyn_relocs *p;
2610
2611 eh = (struct tilegx_elf_link_hash_entry *) h;
2612 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2613 {
2614 asection *s = p->sec->output_section;
2615
2616 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2617 {
2618 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2619
2620 info->flags |= DF_TEXTREL;
2621
2622 /* Not an error, just cut short the traversal. */
2623 return FALSE;
2624 }
2625 }
2626 return TRUE;
2627 }
2628
2629 /* Return true if the dynamic symbol for a given section should be
2630 omitted when creating a shared library. */
2631
2632 bfd_boolean
2633 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2634 struct bfd_link_info *info,
2635 asection *p)
2636 {
2637 /* We keep the .got section symbol so that explicit relocations
2638 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2639 can be turned into relocations against the .got symbol. */
2640 if (strcmp (p->name, ".got") == 0)
2641 return FALSE;
2642
2643 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2644 }
2645
2646 bfd_boolean
2647 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2648 struct bfd_link_info *info)
2649 {
2650 struct tilegx_elf_link_hash_table *htab;
2651 bfd *dynobj;
2652 asection *s;
2653 bfd *ibfd;
2654
2655 htab = tilegx_elf_hash_table (info);
2656 BFD_ASSERT (htab != NULL);
2657 dynobj = htab->elf.dynobj;
2658 BFD_ASSERT (dynobj != NULL);
2659
2660 if (elf_hash_table (info)->dynamic_sections_created)
2661 {
2662 /* Set the contents of the .interp section to the interpreter. */
2663 if (info->executable)
2664 {
2665 s = bfd_get_section_by_name (dynobj, ".interp");
2666 BFD_ASSERT (s != NULL);
2667 s->size = strlen (htab->dynamic_interpreter) + 1;
2668 s->contents = (unsigned char *) htab->dynamic_interpreter;
2669 }
2670 }
2671
2672 /* Set up .got offsets for local syms, and space for local dynamic
2673 relocs. */
2674 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2675 {
2676 bfd_signed_vma *local_got;
2677 bfd_signed_vma *end_local_got;
2678 char *local_tls_type;
2679 bfd_size_type locsymcount;
2680 Elf_Internal_Shdr *symtab_hdr;
2681 asection *srel;
2682
2683 if (! is_tilegx_elf (ibfd))
2684 continue;
2685
2686 for (s = ibfd->sections; s != NULL; s = s->next)
2687 {
2688 struct tilegx_elf_dyn_relocs *p;
2689
2690 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2691 {
2692 if (!bfd_is_abs_section (p->sec)
2693 && bfd_is_abs_section (p->sec->output_section))
2694 {
2695 /* Input section has been discarded, either because
2696 it is a copy of a linkonce section or due to
2697 linker script /DISCARD/, so we'll be discarding
2698 the relocs too. */
2699 }
2700 else if (p->count != 0)
2701 {
2702 srel = elf_section_data (p->sec)->sreloc;
2703 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2704 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2705 info->flags |= DF_TEXTREL;
2706 }
2707 }
2708 }
2709
2710 local_got = elf_local_got_refcounts (ibfd);
2711 if (!local_got)
2712 continue;
2713
2714 symtab_hdr = &elf_symtab_hdr (ibfd);
2715 locsymcount = symtab_hdr->sh_info;
2716 end_local_got = local_got + locsymcount;
2717 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2718 s = htab->elf.sgot;
2719 srel = htab->elf.srelgot;
2720 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2721 {
2722 if (*local_got > 0)
2723 {
2724 *local_got = s->size;
2725 s->size += TILEGX_ELF_WORD_BYTES (htab);
2726 if (*local_tls_type == GOT_TLS_GD)
2727 s->size += TILEGX_ELF_WORD_BYTES (htab);
2728 if (info->shared
2729 || *local_tls_type == GOT_TLS_GD
2730 || *local_tls_type == GOT_TLS_IE)
2731 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2732 }
2733 else
2734 *local_got = (bfd_vma) -1;
2735 }
2736 }
2737
2738 /* Allocate global sym .plt and .got entries, and space for global
2739 sym dynamic relocs. */
2740 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2741
2742 if (elf_hash_table (info)->dynamic_sections_created)
2743 {
2744 /* If the .got section is more than 0x8000 bytes, we add
2745 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2746 bit relocations have a greater chance of working. */
2747 if (htab->elf.sgot->size >= 0x8000
2748 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2749 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2750 }
2751
2752 if (htab->elf.sgotplt)
2753 {
2754 struct elf_link_hash_entry *got;
2755 got = elf_link_hash_lookup (elf_hash_table (info),
2756 "_GLOBAL_OFFSET_TABLE_",
2757 FALSE, FALSE, FALSE);
2758
2759 /* Don't allocate .got.plt section if there are no GOT nor PLT
2760 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2761 if ((got == NULL
2762 || !got->ref_regular_nonweak)
2763 && (htab->elf.sgotplt->size
2764 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2765 && (htab->elf.splt == NULL
2766 || htab->elf.splt->size == 0)
2767 && (htab->elf.sgot == NULL
2768 || (htab->elf.sgot->size
2769 == get_elf_backend_data (output_bfd)->got_header_size)))
2770 htab->elf.sgotplt->size = 0;
2771 }
2772
2773 /* The check_relocs and adjust_dynamic_symbol entry points have
2774 determined the sizes of the various dynamic sections. Allocate
2775 memory for them. */
2776 for (s = dynobj->sections; s != NULL; s = s->next)
2777 {
2778 if ((s->flags & SEC_LINKER_CREATED) == 0)
2779 continue;
2780
2781 if (s == htab->elf.splt
2782 || s == htab->elf.sgot
2783 || s == htab->elf.sgotplt
2784 || s == htab->sdynbss)
2785 {
2786 /* Strip this section if we don't need it; see the
2787 comment below. */
2788 }
2789 else if (strncmp (s->name, ".rela", 5) == 0)
2790 {
2791 if (s->size != 0)
2792 {
2793 /* We use the reloc_count field as a counter if we need
2794 to copy relocs into the output file. */
2795 s->reloc_count = 0;
2796 }
2797 }
2798 else
2799 {
2800 /* It's not one of our sections. */
2801 continue;
2802 }
2803
2804 if (s->size == 0)
2805 {
2806 /* If we don't need this section, strip it from the
2807 output file. This is mostly to handle .rela.bss and
2808 .rela.plt. We must create both sections in
2809 create_dynamic_sections, because they must be created
2810 before the linker maps input sections to output
2811 sections. The linker does that before
2812 adjust_dynamic_symbol is called, and it is that
2813 function which decides whether anything needs to go
2814 into these sections. */
2815 s->flags |= SEC_EXCLUDE;
2816 continue;
2817 }
2818
2819 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2820 continue;
2821
2822 /* Allocate memory for the section contents. Zero the memory
2823 for the benefit of .rela.plt, which has 4 unused entries
2824 at the beginning, and we don't want garbage. */
2825 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2826 if (s->contents == NULL)
2827 return FALSE;
2828 }
2829
2830 if (elf_hash_table (info)->dynamic_sections_created)
2831 {
2832 /* Add some entries to the .dynamic section. We fill in the
2833 values later, in tilegx_elf_finish_dynamic_sections, but we
2834 must add the entries now so that we get the correct size for
2835 the .dynamic section. The DT_DEBUG entry is filled in by the
2836 dynamic linker and used by the debugger. */
2837 #define add_dynamic_entry(TAG, VAL) \
2838 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2839
2840 if (info->executable)
2841 {
2842 if (!add_dynamic_entry (DT_DEBUG, 0))
2843 return FALSE;
2844 }
2845
2846 if (htab->elf.srelplt->size != 0)
2847 {
2848 if (!add_dynamic_entry (DT_PLTGOT, 0)
2849 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2850 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2851 || !add_dynamic_entry (DT_JMPREL, 0))
2852 return FALSE;
2853 }
2854
2855 if (!add_dynamic_entry (DT_RELA, 0)
2856 || !add_dynamic_entry (DT_RELASZ, 0)
2857 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab)))
2858 return FALSE;
2859
2860 /* If any dynamic relocs apply to a read-only section,
2861 then we need a DT_TEXTREL entry. */
2862 if ((info->flags & DF_TEXTREL) == 0)
2863 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2864
2865 if (info->flags & DF_TEXTREL)
2866 {
2867 if (!add_dynamic_entry (DT_TEXTREL, 0))
2868 return FALSE;
2869 }
2870 }
2871 #undef add_dynamic_entry
2872
2873 return TRUE;
2874 }
2875 \f
2876 /* Return the base VMA address which should be subtracted from real addresses
2877 when resolving @dtpoff relocation.
2878 This is PT_TLS segment p_vaddr. */
2879
2880 static bfd_vma
2881 dtpoff_base (struct bfd_link_info *info)
2882 {
2883 /* If tls_sec is NULL, we should have signalled an error already. */
2884 if (elf_hash_table (info)->tls_sec == NULL)
2885 return 0;
2886 return elf_hash_table (info)->tls_sec->vma;
2887 }
2888
2889 /* Return the relocation value for @tpoff relocation. */
2890
2891 static bfd_vma
2892 tpoff (struct bfd_link_info *info, bfd_vma address)
2893 {
2894 struct elf_link_hash_table *htab = elf_hash_table (info);
2895
2896 /* If tls_sec is NULL, we should have signalled an error already. */
2897 if (htab->tls_sec == NULL)
2898 return 0;
2899
2900 return (address - htab->tls_sec->vma);
2901 }
2902
2903 /* Copy SIZE bits from FROM to TO at address ADDR. */
2904
2905 static void
2906 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2907 {
2908 int i;
2909 for (i = 0; i < size; i++)
2910 {
2911 int from_byte = (from + i) / 8;
2912 int from_bit = (from + i) % 8;
2913 int to_byte = (to + i) / 8;
2914 int to_bit = (to + i) % 8;
2915 bfd_byte to_mask = 1 << to_bit;
2916 addr[to_byte] = (addr[to_byte] & ~to_mask)
2917 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2918 }
2919 }
2920
2921 /* Replace the MASK bits in ADDR with those in INSN, for the next
2922 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2923
2924 static void
2925 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2926 const bfd_byte *insn)
2927 {
2928 int i;
2929 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2930 {
2931 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2932 }
2933 }
2934
2935 /* Mask to extract the bits corresponding to an instruction in a
2936 specific pipe of a bundle. */
2937 static const bfd_byte insn_mask_X1[] = {
2938 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
2939 };
2940
2941 /* Mask to extract the bits corresponding to an instruction in a
2942 specific pipe of a bundle, minus the destination operand and the
2943 first source operand. */
2944 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2945 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2946 };
2947
2948 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2949 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
2950 };
2951
2952 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2953 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2954 };
2955 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2956 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
2957 };
2958
2959 /* Mask to extract the bits corresponding to an instruction in a
2960 specific pipe of a bundle, minus the register operands. */
2961 static const bfd_byte insn_mask_X0_no_operand[] = {
2962 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
2963 };
2964
2965 static const bfd_byte insn_mask_X1_no_operand[] = {
2966 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
2967 };
2968
2969 static const bfd_byte insn_mask_Y0_no_operand[] = {
2970 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
2971 };
2972
2973 static const bfd_byte insn_mask_Y1_no_operand[] = {
2974 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
2975 };
2976
2977 /* Various instructions synthesized to support tls references. */
2978
2979 /* ld r0, r0 in the X1 pipe, used for tls ie. */
2980 static const bfd_byte insn_tls_ie_ld_X1[] = {
2981 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
2982 };
2983
2984 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
2985 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
2986 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
2987 };
2988
2989 /* add r0, r0, tp in various pipes, used for tls ie. */
2990 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2991 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
2992 };
2993 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2994 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
2995 };
2996
2997 /* addx r0, r0, tp in various pipes, used for tls ie. */
2998 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
2999 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
3000 };
3001 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
3002 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
3003 };
3004
3005 /* move r0, r0 in various pipes, used for tls gd. */
3006 static const bfd_byte insn_tls_gd_add_X0X1[] = {
3007 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
3008 };
3009 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
3010 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
3011 };
3012
3013 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
3014 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
3015
3016 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
3017 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
3018
3019 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
3020 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
3021
3022 /* Relocate an TILEGX ELF section.
3023
3024 The RELOCATE_SECTION function is called by the new ELF backend linker
3025 to handle the relocations for a section.
3026
3027 The relocs are always passed as Rela structures.
3028
3029 This function is responsible for adjusting the section contents as
3030 necessary, and (if generating a relocatable output file) adjusting
3031 the reloc addend as necessary.
3032
3033 This function does not have to worry about setting the reloc
3034 address or the reloc symbol index.
3035
3036 LOCAL_SYMS is a pointer to the swapped in local symbols.
3037
3038 LOCAL_SECTIONS is an array giving the section in the input file
3039 corresponding to the st_shndx field of each local symbol.
3040
3041 The global hash table entry for the global symbols can be found
3042 via elf_sym_hashes (input_bfd).
3043
3044 When generating relocatable output, this function must handle
3045 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3046 going to be the section symbol corresponding to the output
3047 section, which means that the addend must be adjusted
3048 accordingly. */
3049
3050 bfd_boolean
3051 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3052 bfd *input_bfd, asection *input_section,
3053 bfd_byte *contents, Elf_Internal_Rela *relocs,
3054 Elf_Internal_Sym *local_syms,
3055 asection **local_sections)
3056 {
3057 struct tilegx_elf_link_hash_table *htab;
3058 Elf_Internal_Shdr *symtab_hdr;
3059 struct elf_link_hash_entry **sym_hashes;
3060 bfd_vma *local_got_offsets;
3061 bfd_vma got_base;
3062 asection *sreloc;
3063 Elf_Internal_Rela *rel;
3064 Elf_Internal_Rela *relend;
3065 int num_relocs;
3066
3067 htab = tilegx_elf_hash_table (info);
3068 BFD_ASSERT (htab != NULL);
3069 symtab_hdr = &elf_symtab_hdr (input_bfd);
3070 sym_hashes = elf_sym_hashes (input_bfd);
3071 local_got_offsets = elf_local_got_offsets (input_bfd);
3072
3073 if (elf_hash_table (info)->hgot == NULL)
3074 got_base = 0;
3075 else
3076 got_base = elf_hash_table (info)->hgot->root.u.def.value;
3077
3078 sreloc = elf_section_data (input_section)->sreloc;
3079
3080 rel = relocs;
3081 num_relocs = input_section->reloc_count;
3082 relend = relocs + num_relocs;
3083 for (; rel < relend; rel++)
3084 {
3085 int r_type, tls_type;
3086 bfd_boolean is_tls_iele, is_tls_le;
3087 reloc_howto_type *howto;
3088 unsigned long r_symndx;
3089 struct elf_link_hash_entry *h;
3090 Elf_Internal_Sym *sym;
3091 tilegx_create_func create_func;
3092 asection *sec;
3093 bfd_vma relocation;
3094 bfd_reloc_status_type r;
3095 const char *name;
3096 bfd_vma off;
3097 bfd_boolean is_plt = FALSE;
3098
3099 bfd_boolean unresolved_reloc;
3100
3101 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
3102 if (r_type == R_TILEGX_GNU_VTINHERIT
3103 || r_type == R_TILEGX_GNU_VTENTRY)
3104 continue;
3105
3106 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
3107 {
3108 /* Not clear if we need to check here, but just be paranoid. */
3109 (*_bfd_error_handler)
3110 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3111 input_bfd, r_type, input_section);
3112 bfd_set_error (bfd_error_bad_value);
3113 return FALSE;
3114 }
3115
3116 howto = tilegx_elf_howto_table + r_type;
3117
3118 /* This is a final link. */
3119 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
3120 h = NULL;
3121 sym = NULL;
3122 sec = NULL;
3123 unresolved_reloc = FALSE;
3124 if (r_symndx < symtab_hdr->sh_info)
3125 {
3126 sym = local_syms + r_symndx;
3127 sec = local_sections[r_symndx];
3128 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3129 }
3130 else
3131 {
3132 bfd_boolean warned;
3133
3134 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3135 r_symndx, symtab_hdr, sym_hashes,
3136 h, sec, relocation,
3137 unresolved_reloc, warned);
3138 if (warned)
3139 {
3140 /* To avoid generating warning messages about truncated
3141 relocations, set the relocation's address to be the same as
3142 the start of this section. */
3143 if (input_section->output_section != NULL)
3144 relocation = input_section->output_section->vma;
3145 else
3146 relocation = 0;
3147 }
3148 }
3149
3150 if (sec != NULL && elf_discarded_section (sec))
3151 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3152 rel, relend, howto, contents);
3153
3154 if (info->relocatable)
3155 continue;
3156
3157 if (h != NULL)
3158 name = h->root.root.string;
3159 else
3160 {
3161 name = (bfd_elf_string_from_elf_section
3162 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3163 if (name == NULL || *name == '\0')
3164 name = bfd_section_name (input_bfd, sec);
3165 }
3166
3167 switch (r_type)
3168 {
3169 case R_TILEGX_TLS_GD_CALL:
3170 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3171 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3172 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3173 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3174 case R_TILEGX_IMM8_X0_TLS_ADD:
3175 case R_TILEGX_IMM8_Y0_TLS_ADD:
3176 case R_TILEGX_IMM8_X1_TLS_ADD:
3177 case R_TILEGX_IMM8_Y1_TLS_ADD:
3178 tls_type = GOT_UNKNOWN;
3179 if (h == NULL && local_got_offsets)
3180 tls_type =
3181 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3182 else if (h != NULL)
3183 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3184
3185 is_tls_iele = (! info->shared || tls_type == GOT_TLS_IE);
3186 is_tls_le = is_tls_iele && (!input_section->sec_flg0
3187 && !info->shared
3188 && (h == NULL || h->dynindx == -1));
3189
3190 if (r_type == R_TILEGX_TLS_GD_CALL)
3191 {
3192 if (is_tls_le)
3193 {
3194 /* GD -> LE */
3195 tilegx_replace_insn (contents + rel->r_offset,
3196 insn_mask_X1, insn_move_X0X1);
3197 continue;
3198 }
3199 else if (is_tls_iele)
3200 {
3201 /* GD -> IE */
3202 if (ABI_64_P (output_bfd))
3203 tilegx_replace_insn (contents + rel->r_offset,
3204 insn_mask_X1, insn_tls_ie_ld_X1);
3205 else
3206 tilegx_replace_insn (contents + rel->r_offset,
3207 insn_mask_X1, insn_tls_ie_ld4s_X1);
3208 continue;
3209 }
3210
3211 /* GD -> GD */
3212 h = (struct elf_link_hash_entry *)
3213 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3214 FALSE, TRUE);
3215 BFD_ASSERT (h != NULL);
3216 r_type = R_TILEGX_JUMPOFF_X1_PLT;
3217 howto = tilegx_elf_howto_table + r_type;
3218 }
3219 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3220 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
3221 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
3222 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
3223 {
3224 bfd_boolean is_pipe0 =
3225 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3226 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
3227 bfd_boolean is_X0X1 =
3228 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3229 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
3230 int dest_begin = is_pipe0 ? 0 : 31;
3231 int src_begin;
3232 const bfd_byte *insn;
3233 const bfd_byte *mask;
3234
3235 if (is_tls_le)
3236 {
3237 /* 1. copy dest operand into the first source operand.
3238 2. change the opcode to "move". */
3239 src_begin = is_pipe0 ? 6 : 37;
3240 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
3241
3242 switch (r_type)
3243 {
3244 case R_TILEGX_IMM8_X0_TLS_ADD:
3245 mask = insn_mask_X0_no_dest_no_srca;
3246 break;
3247 case R_TILEGX_IMM8_X1_TLS_ADD:
3248 mask = insn_mask_X1_no_dest_no_srca;
3249 break;
3250 case R_TILEGX_IMM8_Y0_TLS_ADD:
3251 mask = insn_mask_Y0_no_dest_no_srca;
3252 break;
3253 case R_TILEGX_IMM8_Y1_TLS_ADD:
3254 mask = insn_mask_Y1_no_dest_no_srca;
3255 break;
3256 }
3257 }
3258 else
3259 {
3260 /* 1. copy dest operand into the second source operand.
3261 2. change the opcode to "add". */
3262 src_begin = is_pipe0 ? 12 : 43;
3263 if (ABI_64_P (output_bfd))
3264 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3265 else
3266 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3267
3268 switch (r_type)
3269 {
3270 case R_TILEGX_IMM8_X0_TLS_ADD:
3271 mask = insn_mask_X0_no_operand;
3272 break;
3273 case R_TILEGX_IMM8_X1_TLS_ADD:
3274 mask = insn_mask_X1_no_operand;
3275 break;
3276 case R_TILEGX_IMM8_Y0_TLS_ADD:
3277 mask = insn_mask_Y0_no_operand;
3278 break;
3279 case R_TILEGX_IMM8_Y1_TLS_ADD:
3280 mask = insn_mask_Y1_no_operand;
3281 break;
3282 }
3283 }
3284
3285 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3286 src_begin, 6);
3287 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3288
3289 continue;
3290 }
3291 else
3292 {
3293 const bfd_byte *mask = NULL;
3294 const bfd_byte *add_insn = NULL;
3295 bfd_boolean is_64bit = ABI_64_P (output_bfd);
3296
3297 switch (r_type)
3298 {
3299 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3300 add_insn = is_tls_iele
3301 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3302 : insn_tls_gd_add_X0X1;
3303 mask = insn_mask_X0_no_dest_no_srca;
3304 break;
3305 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3306 add_insn = is_tls_iele
3307 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3308 : insn_tls_gd_add_X0X1;
3309 mask = insn_mask_X1_no_dest_no_srca;
3310 break;
3311 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3312 add_insn = is_tls_iele
3313 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3314 : insn_tls_gd_add_Y0Y1;
3315 mask = insn_mask_Y0_no_dest_no_srca;
3316 break;
3317 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3318 add_insn = is_tls_iele
3319 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3320 : insn_tls_gd_add_Y0Y1;
3321 mask = insn_mask_Y1_no_dest_no_srca;
3322 break;
3323 }
3324
3325 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3326
3327 continue;
3328 }
3329 break;
3330 case R_TILEGX_TLS_IE_LOAD:
3331 if (!input_section->sec_flg0
3332 && !info->shared
3333 && (h == NULL || h->dynindx == -1))
3334 {
3335 /* IE -> LE */
3336 tilegx_replace_insn (contents + rel->r_offset,
3337 insn_mask_X1_no_dest_no_srca,
3338 insn_move_X0X1);
3339 }
3340 else
3341 {
3342 /* IE -> IE */
3343 if (ABI_64_P (output_bfd))
3344 tilegx_replace_insn (contents + rel->r_offset,
3345 insn_mask_X1_no_dest_no_srca,
3346 insn_tls_ie_ld_X1);
3347 else
3348 tilegx_replace_insn (contents + rel->r_offset,
3349 insn_mask_X1_no_dest_no_srca,
3350 insn_tls_ie_ld4s_X1);
3351 }
3352 continue;
3353 break;
3354 default:
3355 break;
3356 }
3357
3358 switch (r_type)
3359 {
3360 case R_TILEGX_IMM16_X0_HW0_GOT:
3361 case R_TILEGX_IMM16_X1_HW0_GOT:
3362 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3363 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3364 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3365 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3366 /* Relocation is to the entry for this symbol in the global
3367 offset table. */
3368 if (htab->elf.sgot == NULL)
3369 abort ();
3370
3371 if (h != NULL)
3372 {
3373 bfd_boolean dyn;
3374
3375 off = h->got.offset;
3376 BFD_ASSERT (off != (bfd_vma) -1);
3377 dyn = elf_hash_table (info)->dynamic_sections_created;
3378
3379 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3380 || (info->shared
3381 && SYMBOL_REFERENCES_LOCAL (info, h)))
3382 {
3383 /* This is actually a static link, or it is a
3384 -Bsymbolic link and the symbol is defined
3385 locally, or the symbol was forced to be local
3386 because of a version file. We must initialize
3387 this entry in the global offset table. Since the
3388 offset must always be a multiple
3389 of 8 for 64-bit, we use the least significant bit
3390 to record whether we have initialized it already.
3391
3392 When doing a dynamic link, we create a .rela.got
3393 relocation entry to initialize the value. This
3394 is done in the finish_dynamic_symbol routine. */
3395 if ((off & 1) != 0)
3396 off &= ~1;
3397 else
3398 {
3399 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3400 htab->elf.sgot->contents + off);
3401 h->got.offset |= 1;
3402 }
3403 }
3404 else
3405 unresolved_reloc = FALSE;
3406 }
3407 else
3408 {
3409 BFD_ASSERT (local_got_offsets != NULL
3410 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3411
3412 off = local_got_offsets[r_symndx];
3413
3414 /* The offset must always be a multiple of 8 on 64-bit.
3415 We use the least significant bit to record
3416 whether we have already processed this entry. */
3417 if ((off & 1) != 0)
3418 off &= ~1;
3419 else
3420 {
3421 if (info->shared)
3422 {
3423 asection *s;
3424 Elf_Internal_Rela outrel;
3425
3426 /* We need to generate a R_TILEGX_RELATIVE reloc
3427 for the dynamic linker. */
3428 s = htab->elf.srelgot;
3429 BFD_ASSERT (s != NULL);
3430
3431 outrel.r_offset = (htab->elf.sgot->output_section->vma
3432 + htab->elf.sgot->output_offset
3433 + off);
3434 outrel.r_info =
3435 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3436 outrel.r_addend = relocation;
3437 relocation = 0;
3438 tilegx_elf_append_rela (output_bfd, s, &outrel);
3439 }
3440
3441 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3442 htab->elf.sgot->contents + off);
3443 local_got_offsets[r_symndx] |= 1;
3444 }
3445 }
3446 relocation = htab->elf.sgot->output_offset + off - got_base;
3447 break;
3448
3449 case R_TILEGX_JUMPOFF_X1_PLT:
3450 /* Relocation is to the entry for this symbol in the
3451 procedure linkage table. */
3452 BFD_ASSERT (h != NULL);
3453
3454 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3455 {
3456 /* We didn't make a PLT entry for this symbol. This
3457 happens when statically linking PIC code, or when
3458 using -Bsymbolic. */
3459 break;
3460 }
3461
3462 relocation = (htab->elf.splt->output_section->vma
3463 + htab->elf.splt->output_offset
3464 + h->plt.offset);
3465 unresolved_reloc = FALSE;
3466 break;
3467
3468 case R_TILEGX_64_PCREL:
3469 case R_TILEGX_32_PCREL:
3470 case R_TILEGX_16_PCREL:
3471 case R_TILEGX_8_PCREL:
3472 case R_TILEGX_IMM16_X0_HW0_PCREL:
3473 case R_TILEGX_IMM16_X1_HW0_PCREL:
3474 case R_TILEGX_IMM16_X0_HW1_PCREL:
3475 case R_TILEGX_IMM16_X1_HW1_PCREL:
3476 case R_TILEGX_IMM16_X0_HW2_PCREL:
3477 case R_TILEGX_IMM16_X1_HW2_PCREL:
3478 case R_TILEGX_IMM16_X0_HW3_PCREL:
3479 case R_TILEGX_IMM16_X1_HW3_PCREL:
3480 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3481 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3482 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3483 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3484 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3485 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3486 if (h != NULL
3487 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3488 break;
3489 /* Fall through. */
3490 case R_TILEGX_64:
3491 case R_TILEGX_32:
3492 case R_TILEGX_16:
3493 case R_TILEGX_8:
3494 case R_TILEGX_HW0:
3495 case R_TILEGX_HW1:
3496 case R_TILEGX_HW2:
3497 case R_TILEGX_HW3:
3498 case R_TILEGX_HW0_LAST:
3499 case R_TILEGX_HW1_LAST:
3500 case R_TILEGX_HW2_LAST:
3501 case R_TILEGX_COPY:
3502 case R_TILEGX_GLOB_DAT:
3503 case R_TILEGX_JMP_SLOT:
3504 case R_TILEGX_RELATIVE:
3505 case R_TILEGX_BROFF_X1:
3506 case R_TILEGX_JUMPOFF_X1:
3507 case R_TILEGX_IMM8_X0:
3508 case R_TILEGX_IMM8_Y0:
3509 case R_TILEGX_IMM8_X1:
3510 case R_TILEGX_IMM8_Y1:
3511 case R_TILEGX_DEST_IMM8_X1:
3512 case R_TILEGX_MT_IMM14_X1:
3513 case R_TILEGX_MF_IMM14_X1:
3514 case R_TILEGX_MMSTART_X0:
3515 case R_TILEGX_MMEND_X0:
3516 case R_TILEGX_SHAMT_X0:
3517 case R_TILEGX_SHAMT_X1:
3518 case R_TILEGX_SHAMT_Y0:
3519 case R_TILEGX_SHAMT_Y1:
3520 case R_TILEGX_IMM16_X0_HW0:
3521 case R_TILEGX_IMM16_X1_HW0:
3522 case R_TILEGX_IMM16_X0_HW1:
3523 case R_TILEGX_IMM16_X1_HW1:
3524 case R_TILEGX_IMM16_X0_HW2:
3525 case R_TILEGX_IMM16_X1_HW2:
3526 case R_TILEGX_IMM16_X0_HW3:
3527 case R_TILEGX_IMM16_X1_HW3:
3528 case R_TILEGX_IMM16_X0_HW0_LAST:
3529 case R_TILEGX_IMM16_X1_HW0_LAST:
3530 case R_TILEGX_IMM16_X0_HW1_LAST:
3531 case R_TILEGX_IMM16_X1_HW1_LAST:
3532 case R_TILEGX_IMM16_X0_HW2_LAST:
3533 case R_TILEGX_IMM16_X1_HW2_LAST:
3534 if ((input_section->flags & SEC_ALLOC) == 0)
3535 break;
3536
3537 if ((info->shared
3538 && (h == NULL
3539 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3540 || h->root.type != bfd_link_hash_undefweak)
3541 && (! howto->pc_relative
3542 || !SYMBOL_CALLS_LOCAL (info, h)))
3543 || (!info->shared
3544 && h != NULL
3545 && h->dynindx != -1
3546 && !h->non_got_ref
3547 && ((h->def_dynamic
3548 && !h->def_regular)
3549 || h->root.type == bfd_link_hash_undefweak
3550 || h->root.type == bfd_link_hash_undefined)))
3551 {
3552 Elf_Internal_Rela outrel;
3553 bfd_boolean skip, relocate = FALSE;
3554
3555 /* When generating a shared object, these relocations
3556 are copied into the output file to be resolved at run
3557 time. */
3558
3559 BFD_ASSERT (sreloc != NULL);
3560
3561 skip = FALSE;
3562
3563 outrel.r_offset =
3564 _bfd_elf_section_offset (output_bfd, info, input_section,
3565 rel->r_offset);
3566 if (outrel.r_offset == (bfd_vma) -1)
3567 skip = TRUE;
3568 else if (outrel.r_offset == (bfd_vma) -2)
3569 skip = TRUE, relocate = TRUE;
3570 outrel.r_offset += (input_section->output_section->vma
3571 + input_section->output_offset);
3572
3573 switch (r_type)
3574 {
3575 case R_TILEGX_64_PCREL:
3576 case R_TILEGX_32_PCREL:
3577 case R_TILEGX_16_PCREL:
3578 case R_TILEGX_8_PCREL:
3579 /* If the symbol is not dynamic, we should not keep
3580 a dynamic relocation. But an .rela.* slot has been
3581 allocated for it, output R_TILEGX_NONE.
3582 FIXME: Add code tracking needed dynamic relocs as
3583 e.g. i386 has. */
3584 if (h->dynindx == -1)
3585 skip = TRUE, relocate = TRUE;
3586 break;
3587 }
3588
3589 if (skip)
3590 memset (&outrel, 0, sizeof outrel);
3591 /* h->dynindx may be -1 if the symbol was marked to
3592 become local. */
3593 else if (h != NULL &&
3594 h->dynindx != -1
3595 && (! is_plt
3596 || !info->shared
3597 || !SYMBOLIC_BIND (info, h)
3598 || !h->def_regular))
3599 {
3600 BFD_ASSERT (h->dynindx != -1);
3601 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3602 outrel.r_addend = rel->r_addend;
3603 }
3604 else
3605 {
3606 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3607 {
3608 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3609 R_TILEGX_RELATIVE);
3610 outrel.r_addend = relocation + rel->r_addend;
3611 }
3612 else
3613 {
3614 long indx;
3615
3616 outrel.r_addend = relocation + rel->r_addend;
3617
3618 if (is_plt)
3619 sec = htab->elf.splt;
3620
3621 if (bfd_is_abs_section (sec))
3622 indx = 0;
3623 else if (sec == NULL || sec->owner == NULL)
3624 {
3625 bfd_set_error (bfd_error_bad_value);
3626 return FALSE;
3627 }
3628 else
3629 {
3630 asection *osec;
3631
3632 /* We are turning this relocation into one
3633 against a section symbol. It would be
3634 proper to subtract the symbol's value,
3635 osec->vma, from the emitted reloc addend,
3636 but ld.so expects buggy relocs. */
3637 osec = sec->output_section;
3638 indx = elf_section_data (osec)->dynindx;
3639
3640 if (indx == 0)
3641 {
3642 osec = htab->elf.text_index_section;
3643 indx = elf_section_data (osec)->dynindx;
3644 }
3645
3646 /* FIXME: we really should be able to link non-pic
3647 shared libraries. */
3648 if (indx == 0)
3649 {
3650 BFD_FAIL ();
3651 (*_bfd_error_handler)
3652 (_("%B: probably compiled without -fPIC?"),
3653 input_bfd);
3654 bfd_set_error (bfd_error_bad_value);
3655 return FALSE;
3656 }
3657 }
3658
3659 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3660 r_type);
3661 }
3662 }
3663
3664 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3665
3666 /* This reloc will be computed at runtime, so there's no
3667 need to do anything now. */
3668 if (! relocate)
3669 continue;
3670 }
3671 break;
3672
3673 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3674 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3675 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3676 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3677 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3678 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3679 if (info->shared)
3680 {
3681 Elf_Internal_Rela outrel;
3682 bfd_boolean skip;
3683
3684 BFD_ASSERT (sreloc != NULL);
3685 skip = FALSE;
3686 outrel.r_offset =
3687 _bfd_elf_section_offset (output_bfd, info, input_section,
3688 rel->r_offset);
3689 if (outrel.r_offset == (bfd_vma) -1)
3690 skip = TRUE;
3691 else if (outrel.r_offset == (bfd_vma) -2)
3692 skip = TRUE;
3693 outrel.r_offset += (input_section->output_section->vma
3694 + input_section->output_offset);
3695 if (skip)
3696 memset (&outrel, 0, sizeof outrel);
3697 else
3698 {
3699 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3700 outrel.r_addend = relocation - dtpoff_base (info)
3701 + rel->r_addend;
3702 }
3703
3704 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3705 continue;
3706 }
3707 relocation = tpoff (info, relocation);
3708 break;
3709
3710 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3711 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3712 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3713 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3714 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3715 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3716 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3717 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3718 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3719 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3720 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3721 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3722 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3723 input_section->sec_flg0);
3724 tls_type = GOT_UNKNOWN;
3725 if (h == NULL && local_got_offsets)
3726 tls_type =
3727 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3728 else if (h != NULL)
3729 {
3730 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3731 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
3732 r_type = (!input_section->sec_flg0
3733 ? tilegx_tls_translate_to_le (r_type)
3734 : tilegx_tls_translate_to_ie (r_type));
3735 }
3736
3737 if (tls_type == GOT_TLS_IE)
3738 r_type = tilegx_tls_translate_to_ie (r_type);
3739
3740 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3741 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3742 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3743 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3744 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3745 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3746 {
3747 relocation = tpoff (info, relocation);
3748 break;
3749 }
3750
3751 if (h != NULL)
3752 {
3753 off = h->got.offset;
3754 h->got.offset |= 1;
3755 }
3756 else
3757 {
3758 BFD_ASSERT (local_got_offsets != NULL);
3759 off = local_got_offsets[r_symndx];
3760 local_got_offsets[r_symndx] |= 1;
3761 }
3762
3763 if (htab->elf.sgot == NULL)
3764 abort ();
3765
3766 if ((off & 1) != 0)
3767 off &= ~1;
3768 else
3769 {
3770 Elf_Internal_Rela outrel;
3771 int indx = 0;
3772 bfd_boolean need_relocs = FALSE;
3773
3774 if (htab->elf.srelgot == NULL)
3775 abort ();
3776
3777 if (h != NULL)
3778 {
3779 bfd_boolean dyn;
3780 dyn = htab->elf.dynamic_sections_created;
3781
3782 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3783 && (!info->shared
3784 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3785 {
3786 indx = h->dynindx;
3787 }
3788 }
3789
3790 /* The GOT entries have not been initialized yet. Do it
3791 now, and emit any relocations. */
3792 if ((info->shared || indx != 0)
3793 && (h == NULL
3794 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3795 || h->root.type != bfd_link_hash_undefweak))
3796 need_relocs = TRUE;
3797
3798 switch (r_type)
3799 {
3800 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3801 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3802 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3803 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3804 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3805 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3806 if (need_relocs) {
3807 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3808 htab->elf.sgot->contents + off);
3809 outrel.r_offset = (htab->elf.sgot->output_section->vma
3810 + htab->elf.sgot->output_offset + off);
3811 outrel.r_addend = 0;
3812 if (indx == 0)
3813 outrel.r_addend = relocation - dtpoff_base (info);
3814 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3815 TILEGX_ELF_TPOFF_RELOC (htab));
3816 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3817 } else {
3818 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3819 tpoff (info, relocation),
3820 htab->elf.sgot->contents + off);
3821 }
3822 break;
3823
3824 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3825 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3826 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3827 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3828 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3829 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3830 if (need_relocs) {
3831 outrel.r_offset = (htab->elf.sgot->output_section->vma
3832 + htab->elf.sgot->output_offset + off);
3833 outrel.r_addend = 0;
3834 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3835 TILEGX_ELF_DTPMOD_RELOC (htab));
3836 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3837 htab->elf.sgot->contents + off);
3838 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3839 if (indx == 0)
3840 {
3841 BFD_ASSERT (! unresolved_reloc);
3842 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3843 relocation - dtpoff_base (info),
3844 (htab->elf.sgot->contents + off +
3845 TILEGX_ELF_WORD_BYTES (htab)));
3846 }
3847 else
3848 {
3849 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3850 (htab->elf.sgot->contents + off +
3851 TILEGX_ELF_WORD_BYTES (htab)));
3852 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3853 TILEGX_ELF_DTPOFF_RELOC (htab));
3854 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3855 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3856 }
3857 }
3858
3859 else {
3860 /* If we are not emitting relocations for a
3861 general dynamic reference, then we must be in a
3862 static link or an executable link with the
3863 symbol binding locally. Mark it as belonging
3864 to module 1, the executable. */
3865 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3866 htab->elf.sgot->contents + off );
3867 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3868 relocation - dtpoff_base (info),
3869 htab->elf.sgot->contents + off +
3870 TILEGX_ELF_WORD_BYTES (htab));
3871 }
3872 break;
3873 }
3874 }
3875
3876 if (off >= (bfd_vma) -2)
3877 abort ();
3878
3879 relocation = htab->elf.sgot->output_offset + off - got_base;
3880 unresolved_reloc = FALSE;
3881 howto = tilegx_elf_howto_table + r_type;
3882 break;
3883
3884 default:
3885 break;
3886 }
3887
3888 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3889 because such sections are not SEC_ALLOC and thus ld.so will
3890 not process them. */
3891 if (unresolved_reloc
3892 && !((input_section->flags & SEC_DEBUGGING) != 0
3893 && h->def_dynamic)
3894 && _bfd_elf_section_offset (output_bfd, info, input_section,
3895 rel->r_offset) != (bfd_vma) -1)
3896 (*_bfd_error_handler)
3897 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3898 input_bfd,
3899 input_section,
3900 (long) rel->r_offset,
3901 howto->name,
3902 h->root.root.string);
3903
3904 r = bfd_reloc_continue;
3905
3906 /* Get the operand creation function, if any. */
3907 create_func = reloc_to_create_func[r_type];
3908 if (create_func == NULL)
3909 {
3910 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3911 contents, rel->r_offset,
3912 relocation, rel->r_addend);
3913 }
3914 else
3915 {
3916 if (howto->pc_relative)
3917 {
3918 relocation -=
3919 input_section->output_section->vma + input_section->output_offset;
3920 if (howto->pcrel_offset)
3921 relocation -= rel->r_offset;
3922 }
3923
3924 bfd_byte *data;
3925
3926 /* Add the relocation addend if any to the final target value */
3927 relocation += rel->r_addend;
3928
3929 /* Do basic range checking */
3930 r = bfd_check_overflow (howto->complain_on_overflow,
3931 howto->bitsize,
3932 howto->rightshift,
3933 TILEGX_ELF_WORD_BYTES (htab) * 8,
3934 relocation);
3935
3936 /*
3937 * Write the relocated value out into the raw section data.
3938 * Don't put a relocation out in the .rela section.
3939 */
3940 tilegx_bundle_bits mask = create_func(-1);
3941 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
3942
3943 /* Only touch bytes while the mask is not 0, so we
3944 don't write to out of bounds memory if this is actually
3945 a 16-bit switch instruction. */
3946 for (data = contents + rel->r_offset; mask != 0; data++)
3947 {
3948 bfd_byte byte_mask = (bfd_byte)mask;
3949 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3950 mask >>= 8;
3951 value >>= 8;
3952 }
3953 }
3954
3955 if (r != bfd_reloc_ok)
3956 {
3957 const char *msg = NULL;
3958
3959 switch (r)
3960 {
3961 case bfd_reloc_overflow:
3962 r = info->callbacks->reloc_overflow
3963 (info, (h ? &h->root : NULL), name, howto->name,
3964 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3965 break;
3966
3967 case bfd_reloc_undefined:
3968 r = info->callbacks->undefined_symbol
3969 (info, name, input_bfd, input_section, rel->r_offset,
3970 TRUE);
3971 break;
3972
3973 case bfd_reloc_outofrange:
3974 msg = _("internal error: out of range error");
3975 break;
3976
3977 case bfd_reloc_notsupported:
3978 msg = _("internal error: unsupported relocation error");
3979 break;
3980
3981 case bfd_reloc_dangerous:
3982 msg = _("internal error: dangerous relocation");
3983 break;
3984
3985 default:
3986 msg = _("internal error: unknown error");
3987 break;
3988 }
3989
3990 if (msg)
3991 r = info->callbacks->warning
3992 (info, msg, name, input_bfd, input_section, rel->r_offset);
3993
3994 if (! r)
3995 return FALSE;
3996 }
3997 }
3998
3999 return TRUE;
4000 }
4001
4002 /* Finish up dynamic symbol handling. We set the contents of various
4003 dynamic sections here. */
4004
4005 bfd_boolean
4006 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
4007 struct bfd_link_info *info,
4008 struct elf_link_hash_entry *h,
4009 Elf_Internal_Sym *sym)
4010 {
4011 struct tilegx_elf_link_hash_table *htab;
4012
4013 htab = tilegx_elf_hash_table (info);
4014 BFD_ASSERT (htab != NULL);
4015
4016 if (h->plt.offset != (bfd_vma) -1)
4017 {
4018 asection *splt;
4019 asection *srela;
4020 asection *sgotplt;
4021 Elf_Internal_Rela rela;
4022 bfd_byte *loc;
4023 bfd_vma r_offset;
4024 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
4025
4026
4027 int rela_index;
4028
4029 /* This symbol has an entry in the PLT. Set it up. */
4030
4031 BFD_ASSERT (h->dynindx != -1);
4032
4033 splt = htab->elf.splt;
4034 srela = htab->elf.srelplt;
4035 sgotplt = htab->elf.sgotplt;
4036
4037 if (splt == NULL || srela == NULL)
4038 abort ();
4039
4040 /* Fill in the entry in the procedure linkage table. */
4041 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
4042 h->plt.offset, &r_offset);
4043
4044 /* Fill in the entry in the global offset table, which initially points
4045 to the beginning of the plt. */
4046 TILEGX_ELF_PUT_WORD (htab, output_bfd,
4047 splt->output_section->vma + splt->output_offset,
4048 sgotplt->contents + r_offset);
4049
4050 /* Fill in the entry in the .rela.plt section. */
4051 rela.r_offset = (sgotplt->output_section->vma
4052 + sgotplt->output_offset
4053 + r_offset);
4054 rela.r_addend = 0;
4055 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
4056
4057 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
4058 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4059
4060 if (!h->def_regular)
4061 {
4062 /* Mark the symbol as undefined, rather than as defined in
4063 the .plt section. Leave the value alone. */
4064 sym->st_shndx = SHN_UNDEF;
4065 /* If the symbol is weak, we do need to clear the value.
4066 Otherwise, the PLT entry would provide a definition for
4067 the symbol even if the symbol wasn't defined anywhere,
4068 and so the symbol would never be NULL. */
4069 if (!h->ref_regular_nonweak)
4070 sym->st_value = 0;
4071 }
4072 }
4073
4074 if (h->got.offset != (bfd_vma) -1
4075 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4076 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4077 {
4078 asection *sgot;
4079 asection *srela;
4080 Elf_Internal_Rela rela;
4081
4082 /* This symbol has an entry in the GOT. Set it up. */
4083
4084 sgot = htab->elf.sgot;
4085 srela = htab->elf.srelgot;
4086 BFD_ASSERT (sgot != NULL && srela != NULL);
4087
4088 rela.r_offset = (sgot->output_section->vma
4089 + sgot->output_offset
4090 + (h->got.offset &~ (bfd_vma) 1));
4091
4092 /* If this is a -Bsymbolic link, and the symbol is defined
4093 locally, we just want to emit a RELATIVE reloc. Likewise if
4094 the symbol was forced to be local because of a version file.
4095 The entry in the global offset table will already have been
4096 initialized in the relocate_section function. */
4097 if (info->shared
4098 && (info->symbolic || h->dynindx == -1)
4099 && h->def_regular)
4100 {
4101 asection *sec = h->root.u.def.section;
4102 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
4103 rela.r_addend = (h->root.u.def.value
4104 + sec->output_section->vma
4105 + sec->output_offset);
4106 }
4107 else
4108 {
4109 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
4110 rela.r_addend = 0;
4111 }
4112
4113 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
4114 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4115 tilegx_elf_append_rela (output_bfd, srela, &rela);
4116 }
4117
4118 if (h->needs_copy)
4119 {
4120 asection *s;
4121 Elf_Internal_Rela rela;
4122
4123 /* This symbols needs a copy reloc. Set it up. */
4124 BFD_ASSERT (h->dynindx != -1);
4125
4126 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4127 ".rela.bss");
4128 BFD_ASSERT (s != NULL);
4129
4130 rela.r_offset = (h->root.u.def.value
4131 + h->root.u.def.section->output_section->vma
4132 + h->root.u.def.section->output_offset);
4133 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
4134 rela.r_addend = 0;
4135 tilegx_elf_append_rela (output_bfd, s, &rela);
4136 }
4137
4138 /* Mark some specially defined symbols as absolute. */
4139 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4140 || (h == htab->elf.hgot || h == htab->elf.hplt))
4141 sym->st_shndx = SHN_ABS;
4142
4143 return TRUE;
4144 }
4145
4146 /* Finish up the dynamic sections. */
4147
4148 static bfd_boolean
4149 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4150 bfd *dynobj, asection *sdyn,
4151 asection *splt ATTRIBUTE_UNUSED)
4152 {
4153 struct tilegx_elf_link_hash_table *htab;
4154 const struct elf_backend_data *bed;
4155 bfd_byte *dyncon, *dynconend;
4156 size_t dynsize;
4157
4158 htab = tilegx_elf_hash_table (info);
4159 BFD_ASSERT (htab != NULL);
4160 bed = get_elf_backend_data (output_bfd);
4161 dynsize = bed->s->sizeof_dyn;
4162 dynconend = sdyn->contents + sdyn->size;
4163
4164 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4165 {
4166 Elf_Internal_Dyn dyn;
4167 asection *s;
4168
4169 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4170
4171 switch (dyn.d_tag)
4172 {
4173 case DT_PLTGOT:
4174 s = htab->elf.sgotplt;
4175 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4176 break;
4177 case DT_JMPREL:
4178 s = htab->elf.srelplt;
4179 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4180 break;
4181 case DT_PLTRELSZ:
4182 s = htab->elf.srelplt;
4183 dyn.d_un.d_val = s->size;
4184 break;
4185 default:
4186 continue;
4187 }
4188
4189 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4190 }
4191 return TRUE;
4192 }
4193
4194 bfd_boolean
4195 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
4196 struct bfd_link_info *info)
4197 {
4198 bfd *dynobj;
4199 asection *sdyn;
4200 struct tilegx_elf_link_hash_table *htab;
4201
4202 htab = tilegx_elf_hash_table (info);
4203 BFD_ASSERT (htab != NULL);
4204 dynobj = htab->elf.dynobj;
4205
4206 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4207
4208 if (elf_hash_table (info)->dynamic_sections_created)
4209 {
4210 asection *splt;
4211 bfd_boolean ret;
4212
4213 splt = bfd_get_section_by_name (dynobj, ".plt");
4214 BFD_ASSERT (splt != NULL && sdyn != NULL);
4215
4216 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
4217
4218 if (ret != TRUE)
4219 return ret;
4220
4221 /* Fill in the head and tail entries in the procedure linkage table. */
4222 if (splt->size > 0)
4223 {
4224 memcpy (splt->contents,
4225 ABI_64_P (output_bfd) ?
4226 tilegx64_plt0_entry : tilegx32_plt0_entry,
4227 PLT_HEADER_SIZE);
4228
4229 memcpy (splt->contents + splt->size - PLT_TAIL_SIZE,
4230 ABI_64_P (output_bfd) ?
4231 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4232 PLT_TAIL_SIZE);
4233 }
4234
4235 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4236 = PLT_ENTRY_SIZE;
4237 }
4238
4239 if (htab->elf.sgotplt)
4240 {
4241 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4242 {
4243 (*_bfd_error_handler)
4244 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4245 return FALSE;
4246 }
4247
4248 if (htab->elf.sgotplt->size > 0)
4249 {
4250 /* Write the first two entries in .got.plt, needed for the dynamic
4251 linker. */
4252 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4253 htab->elf.sgotplt->contents);
4254 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4255 htab->elf.sgotplt->contents
4256 + GOT_ENTRY_SIZE (htab));
4257 }
4258
4259 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4260 GOT_ENTRY_SIZE (htab);
4261 }
4262
4263 if (htab->elf.sgot)
4264 {
4265 if (htab->elf.sgot->size > 0)
4266 {
4267 /* Set the first entry in the global offset table to the address of
4268 the dynamic section. */
4269 bfd_vma val = (sdyn ?
4270 sdyn->output_section->vma + sdyn->output_offset :
4271 0);
4272 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4273 htab->elf.sgot->contents);
4274 }
4275
4276 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4277 GOT_ENTRY_SIZE (htab);
4278 }
4279
4280 return TRUE;
4281 }
4282
4283 \f
4284
4285 /* Return address for Ith PLT stub in section PLT, for relocation REL
4286 or (bfd_vma) -1 if it should not be included. */
4287
4288 bfd_vma
4289 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4290 const arelent *rel ATTRIBUTE_UNUSED)
4291 {
4292 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4293 }
4294
4295 enum elf_reloc_type_class
4296 tilegx_reloc_type_class (const Elf_Internal_Rela *rela)
4297 {
4298 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4299 {
4300 case R_TILEGX_RELATIVE:
4301 return reloc_class_relative;
4302 case R_TILEGX_JMP_SLOT:
4303 return reloc_class_plt;
4304 case R_TILEGX_COPY:
4305 return reloc_class_copy;
4306 default:
4307 return reloc_class_normal;
4308 }
4309 }
4310
4311 int
4312 tilegx_additional_program_headers (bfd *abfd,
4313 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4314 {
4315 /* Each .intrpt section specified by the user adds another PT_LOAD
4316 header since the sections are discontiguous. */
4317 static const char intrpt_sections[4][9] =
4318 {
4319 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4320 };
4321 int count = 0;
4322 int i;
4323
4324 for (i = 0; i < 4; i++)
4325 {
4326 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4327 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4328 ++count;
4329 }
4330
4331 /* Add four "padding" headers in to leave room in case a custom linker
4332 script does something fancy. Otherwise ld complains that it ran
4333 out of program headers and refuses to link. */
4334 count += 4;
4335
4336 return count;
4337 }
4338
4339
4340 bfd_boolean
4341 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4342 {
4343 const char *targ1 = bfd_get_target (ibfd);
4344 const char *targ2 = bfd_get_target (obfd);
4345
4346 if (strcmp (targ1, targ2) != 0)
4347 {
4348 (*_bfd_error_handler)
4349 (_("%B: Cannot link together %s and %s objects."),
4350 ibfd, targ1, targ2);
4351 bfd_set_error (bfd_error_bad_value);
4352 return FALSE;
4353 }
4354
4355 return TRUE;
4356 }
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