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[deliverable/binutils-gdb.git] / bfd / elfxx-tilegx.c
1 /* TILE-Gx-specific support for ELF.
2 Copyright (C) 2011-2017 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/tilegx.h"
26 #include "opcode/tilegx.h"
27 #include "libiberty.h"
28 #include "elfxx-tilegx.h"
29
30 #define ABI_64_P(abfd) \
31 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
32
33 #define TILEGX_ELF_WORD_BYTES(htab) \
34 ((htab)->bytes_per_word)
35
36 /* The size of an external RELA relocation. */
37 #define TILEGX_ELF_RELA_BYTES(htab) \
38 ((htab)->bytes_per_rela)
39
40 /* Both 32-bit and 64-bit tilegx encode this in an identical manner,
41 so just take advantage of that. */
42 #define TILEGX_ELF_R_TYPE(r_info) \
43 ((r_info) & 0xFF)
44
45 #define TILEGX_ELF_R_INFO(htab, in_rel, index, type) \
46 ((htab)->r_info (in_rel, index, type))
47
48 #define TILEGX_ELF_R_SYMNDX(htab, r_info) \
49 ((htab)->r_symndx(r_info))
50
51 #define TILEGX_ELF_DTPOFF_RELOC(htab) \
52 ((htab)->dtpoff_reloc)
53
54 #define TILEGX_ELF_DTPMOD_RELOC(htab) \
55 ((htab)->dtpmod_reloc)
56
57 #define TILEGX_ELF_TPOFF_RELOC(htab) \
58 ((htab)->tpoff_reloc)
59
60 #define TILEGX_ELF_PUT_WORD(htab, bfd, val, ptr) \
61 ((htab)->put_word (bfd, val, ptr))
62
63 /* The name of the dynamic interpreter. This is put in the .interp
64 section. */
65
66 #define ELF64_DYNAMIC_INTERPRETER "/lib/ld.so.1"
67 #define ELF32_DYNAMIC_INTERPRETER "/lib32/ld.so.1"
68
69
70 static reloc_howto_type tilegx_elf_howto_table [] =
71 {
72 /* This reloc does nothing. */
73 HOWTO (R_TILEGX_NONE, /* type */
74 0, /* rightshift */
75 3, /* size (0 = byte, 1 = short, 2 = long) */
76 0, /* bitsize */
77 FALSE, /* pc_relative */
78 0, /* bitpos */
79 complain_overflow_dont, /* complain_on_overflow */
80 bfd_elf_generic_reloc, /* special_function */
81 "R_TILEGX_NONE", /* name */
82 FALSE, /* partial_inplace */
83 0, /* src_mask */
84 0, /* dst_mask */
85 FALSE), /* pcrel_offset */
86 #ifdef BFD64
87 /* A 64 bit absolute relocation. */
88 HOWTO (R_TILEGX_64, /* type */
89 0, /* rightshift */
90 4, /* size (0 = byte, 1 = short, 2 = long) */
91 64, /* bitsize */
92 FALSE, /* pc_relative */
93 0, /* bitpos */
94 complain_overflow_dont, /* complain_on_overflow */
95 bfd_elf_generic_reloc, /* special_function */
96 "R_TILEGX_64", /* name */
97 FALSE, /* partial_inplace */
98 0, /* src_mask */
99 0xffffffffffffffffULL, /* dst_mask */
100 FALSE), /* pcrel_offset */
101 #endif
102 /* A 32 bit absolute relocation. */
103 HOWTO (R_TILEGX_32, /* type */
104 0, /* rightshift */
105 2, /* size (0 = byte, 1 = short, 2 = long) */
106 32, /* bitsize */
107 FALSE, /* pc_relative */
108 0, /* bitpos */
109 complain_overflow_dont, /* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_TILEGX_32", /* name */
112 FALSE, /* partial_inplace */
113 0, /* src_mask */
114 0xffffffff, /* dst_mask */
115 FALSE), /* pcrel_offset */
116
117 /* A 16 bit absolute relocation. */
118 HOWTO (R_TILEGX_16, /* type */
119 0, /* rightshift */
120 1, /* size (0 = byte, 1 = short, 2 = long) */
121 16, /* bitsize */
122 FALSE, /* pc_relative */
123 0, /* bitpos */
124 complain_overflow_bitfield, /* complain_on_overflow */
125 bfd_elf_generic_reloc, /* special_function */
126 "R_TILEGX_16", /* name */
127 FALSE, /* partial_inplace */
128 0, /* src_mask */
129 0xffff, /* dst_mask */
130 FALSE), /* pcrel_offset */
131
132 /* An 8 bit absolute relocation. */
133 HOWTO (R_TILEGX_8, /* type */
134 0, /* rightshift */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
136 8, /* bitsize */
137 FALSE, /* pc_relative */
138 0, /* bitpos */
139 complain_overflow_unsigned, /* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_TILEGX_8", /* name */
142 FALSE, /* partial_inplace */
143 0, /* src_mask */
144 0xff, /* dst_mask */
145 FALSE), /* pcrel_offset */
146 #ifdef BFD64
147 /* A 64 bit pc-relative relocation. */
148 HOWTO (R_TILEGX_64_PCREL,/* type */
149 0, /* rightshift */
150 4, /* size (0 = byte, 1 = short, 2 = long) */
151 64, /* bitsize */
152 TRUE, /* pc_relative */
153 0, /* bitpos */
154 complain_overflow_dont, /* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_TILEGX_32_PCREL", /* name */
157 FALSE, /* partial_inplace */
158 0, /* src_mask */
159 0xffffffffffffffffULL, /* dst_mask */
160 TRUE), /* pcrel_offset */
161 #endif
162 /* A 32 bit pc-relative relocation. */
163 HOWTO (R_TILEGX_32_PCREL,/* type */
164 0, /* rightshift */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
166 32, /* bitsize */
167 TRUE, /* pc_relative */
168 0, /* bitpos */
169 complain_overflow_dont, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_TILEGX_32_PCREL", /* name */
172 FALSE, /* partial_inplace */
173 0, /* src_mask */
174 0xffffffff, /* dst_mask */
175 TRUE), /* pcrel_offset */
176
177 /* A 16 bit pc-relative relocation. */
178 HOWTO (R_TILEGX_16_PCREL,/* type */
179 0, /* rightshift */
180 1, /* size (0 = byte, 1 = short, 2 = long) */
181 16, /* bitsize */
182 TRUE, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_signed, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_TILEGX_16_PCREL", /* name */
187 FALSE, /* partial_inplace */
188 0, /* src_mask */
189 0xffff, /* dst_mask */
190 TRUE), /* pcrel_offset */
191
192 /* An 8 bit pc-relative relocation. */
193 HOWTO (R_TILEGX_8_PCREL, /* type */
194 0, /* rightshift */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
196 8, /* bitsize */
197 TRUE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_signed, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_TILEGX_8_PCREL",/* name */
202 FALSE, /* partial_inplace */
203 0, /* src_mask */
204 0xff, /* dst_mask */
205 TRUE), /* pcrel_offset */
206
207 /* A 16 bit relocation without overflow. */
208 HOWTO (R_TILEGX_HW0, /* type */
209 0, /* rightshift */
210 1, /* size (0 = byte, 1 = short, 2 = long) */
211 16, /* bitsize */
212 FALSE, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_dont,/* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_TILEGX_HW0", /* name */
217 FALSE, /* partial_inplace */
218 0, /* src_mask */
219 0xffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
221
222 /* A 16 bit relocation without overflow. */
223 HOWTO (R_TILEGX_HW1, /* type */
224 16, /* rightshift */
225 1, /* size (0 = byte, 1 = short, 2 = long) */
226 16, /* bitsize */
227 FALSE, /* pc_relative */
228 0, /* bitpos */
229 complain_overflow_dont,/* complain_on_overflow */
230 bfd_elf_generic_reloc, /* special_function */
231 "R_TILEGX_HW1", /* name */
232 FALSE, /* partial_inplace */
233 0, /* src_mask */
234 0xffff, /* dst_mask */
235 FALSE), /* pcrel_offset */
236
237 /* A 16 bit relocation without overflow. */
238 HOWTO (R_TILEGX_HW2, /* type */
239 32, /* rightshift */
240 1, /* size (0 = byte, 1 = short, 2 = long) */
241 16, /* bitsize */
242 FALSE, /* pc_relative */
243 0, /* bitpos */
244 complain_overflow_dont,/* complain_on_overflow */
245 bfd_elf_generic_reloc, /* special_function */
246 "R_TILEGX_HW2", /* name */
247 FALSE, /* partial_inplace */
248 0, /* src_mask */
249 0xffff, /* dst_mask */
250 FALSE), /* pcrel_offset */
251
252 /* A 16 bit relocation without overflow. */
253 HOWTO (R_TILEGX_HW3, /* type */
254 48, /* rightshift */
255 1, /* size (0 = byte, 1 = short, 2 = long) */
256 16, /* bitsize */
257 FALSE, /* pc_relative */
258 0, /* bitpos */
259 complain_overflow_dont,/* complain_on_overflow */
260 bfd_elf_generic_reloc, /* special_function */
261 "R_TILEGX_HW3", /* name */
262 FALSE, /* partial_inplace */
263 0, /* src_mask */
264 0xffff, /* dst_mask */
265 FALSE), /* pcrel_offset */
266
267 /* A 16 bit relocation with overflow. */
268 HOWTO (R_TILEGX_HW0_LAST, /* type */
269 0, /* rightshift */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
271 16, /* bitsize */
272 FALSE, /* pc_relative */
273 0, /* bitpos */
274 complain_overflow_signed,/* complain_on_overflow */
275 bfd_elf_generic_reloc, /* special_function */
276 "R_TILEGX_HW0_LAST", /* name */
277 FALSE, /* partial_inplace */
278 0, /* src_mask */
279 0xffff, /* dst_mask */
280 FALSE), /* pcrel_offset */
281
282 /* A 16 bit relocation with overflow. */
283 HOWTO (R_TILEGX_HW1_LAST, /* type */
284 16, /* rightshift */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
287 FALSE, /* pc_relative */
288 0, /* bitpos */
289 complain_overflow_signed,/* complain_on_overflow */
290 bfd_elf_generic_reloc, /* special_function */
291 "R_TILEGX_HW1_LAST", /* name */
292 FALSE, /* partial_inplace */
293 0, /* src_mask */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
296
297 /* A 16 bit relocation with overflow. */
298 HOWTO (R_TILEGX_HW2_LAST, /* type */
299 32, /* rightshift */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
301 16, /* bitsize */
302 FALSE, /* pc_relative */
303 0, /* bitpos */
304 complain_overflow_signed,/* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_TILEGX_HW2_LAST", /* name */
307 FALSE, /* partial_inplace */
308 0, /* src_mask */
309 0xffff, /* dst_mask */
310 FALSE), /* pcrel_offset */
311
312 HOWTO (R_TILEGX_COPY, /* type */
313 0, /* rightshift */
314 0, /* size (0 = byte, 1 = short, 2 = long) */
315 0, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_dont, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_TILEGX_COPY", /* name */
321 FALSE, /* partial_inplace */
322 0, /* src_mask */
323 0, /* dst_mask */
324 TRUE), /* pcrel_offset */
325
326 HOWTO (R_TILEGX_GLOB_DAT, /* type */
327 0, /* rightshift */
328 0, /* size (0 = byte, 1 = short, 2 = long) */
329 0, /* bitsize */
330 FALSE, /* pc_relative */
331 0, /* bitpos */
332 complain_overflow_dont, /* complain_on_overflow */
333 bfd_elf_generic_reloc, /* special_function */
334 "R_TILEGX_GLOB_DAT", /* name */
335 FALSE, /* partial_inplace */
336 0, /* src_mask */
337 0, /* dst_mask */
338 TRUE), /* pcrel_offset */
339
340 HOWTO (R_TILEGX_JMP_SLOT, /* type */
341 0, /* rightshift */
342 0, /* size (0 = byte, 1 = short, 2 = long) */
343 0, /* bitsize */
344 FALSE, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_dont, /* complain_on_overflow */
347 bfd_elf_generic_reloc, /* special_function */
348 "R_TILEGX_JMP_SLOT", /* name */
349 FALSE, /* partial_inplace */
350 0, /* src_mask */
351 0, /* dst_mask */
352 TRUE), /* pcrel_offset */
353
354 HOWTO (R_TILEGX_RELATIVE, /* type */
355 0, /* rightshift */
356 0, /* size (0 = byte, 1 = short, 2 = long) */
357 0, /* bitsize */
358 FALSE, /* pc_relative */
359 0, /* bitpos */
360 complain_overflow_dont, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_TILEGX_RELATIVE", /* name */
363 FALSE, /* partial_inplace */
364 0, /* src_mask */
365 0, /* dst_mask */
366 TRUE), /* pcrel_offset */
367
368 HOWTO (R_TILEGX_BROFF_X1, /* type */
369 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 17, /* bitsize */
372 TRUE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_TILEGX_BROFF_X1", /* name */
377 FALSE, /* partial_inplace */
378 0, /* src_mask */
379 -1, /* dst_mask */
380 TRUE), /* pcrel_offset */
381
382 HOWTO (R_TILEGX_JUMPOFF_X1, /* type */
383 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 27, /* bitsize */
386 TRUE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_signed,/* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_TILEGX_JUMPOFF_X1", /* name */
391 FALSE, /* partial_inplace */
392 0, /* src_mask */
393 -1, /* dst_mask */
394 TRUE), /* pcrel_offset */
395
396 HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */
397 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
399 27, /* bitsize */
400 TRUE, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_signed,/* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_TILEGX_JUMPOFF_X1_PLT", /* name */
405 FALSE, /* partial_inplace */
406 0, /* src_mask */
407 -1, /* dst_mask */
408 TRUE), /* pcrel_offset */
409
410 #define TILEGX_IMM_HOWTO(name, size, bitsize) \
411 HOWTO (name, 0, size, bitsize, FALSE, 0, \
412 complain_overflow_signed, bfd_elf_generic_reloc, \
413 #name, FALSE, 0, -1, FALSE)
414
415 #define TILEGX_UIMM_HOWTO(name, size, bitsize) \
416 HOWTO (name, 0, size, bitsize, FALSE, 0, \
417 complain_overflow_unsigned, bfd_elf_generic_reloc, \
418 #name, FALSE, 0, -1, FALSE)
419
420 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 0, 8),
421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8),
422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8),
423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8),
424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8),
425
426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14),
427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14),
428
429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6),
430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6),
431
432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6),
433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6),
434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6),
435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6),
436
437 #define TILEGX_IMM16_HOWTO(name, rshift) \
438 HOWTO (name, rshift, 1, 16, FALSE, 0, \
439 complain_overflow_dont, bfd_elf_generic_reloc, \
440 #name, FALSE, 0, 0xffff, FALSE)
441
442 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0),
443 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0),
444 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16),
445 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16),
446 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32),
447 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32),
448 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48),
449 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48),
450
451 #define TILEGX_IMM16_HOWTO_LAST(name, rshift) \
452 HOWTO (name, rshift, 1, 16, FALSE, 0, \
453 complain_overflow_signed, bfd_elf_generic_reloc, \
454 #name, FALSE, 0, 0xffff, FALSE)
455
456 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0),
457 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0),
458 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16),
459 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16),
460 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32),
461 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32),
462
463 /* PC-relative offsets. */
464
465 #define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \
466 HOWTO (name, rshift, 1, 16, TRUE, 0, \
467 complain_overflow_dont, bfd_elf_generic_reloc, \
468 #name, FALSE, 0, 0xffff, TRUE)
469
470 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0),
471 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0),
472 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16),
473 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16),
474 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32),
475 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32),
476 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48),
477 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48),
478
479 #define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \
480 HOWTO (name, rshift, 1, 16, TRUE, 0, \
481 complain_overflow_signed, bfd_elf_generic_reloc, \
482 #name, FALSE, 0, 0xffff, TRUE)
483
484 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0),
485 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0),
486 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16),
487 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16),
488 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32),
489 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32),
490
491 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0),
492 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0),
493
494 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PLT_PCREL, 0),
495 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PLT_PCREL, 0),
496 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PLT_PCREL, 16),
497 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PLT_PCREL, 16),
498 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PLT_PCREL, 32),
499 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PLT_PCREL, 32),
500
501 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_GOT, 0),
502 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_GOT, 0),
503 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_GOT, 16),
504 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_GOT, 16),
505
506 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PLT_PCREL, 48),
507 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PLT_PCREL, 48),
508
509 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_GD, 0),
510 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_GD, 0),
511
512 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_LE, 0),
513 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_LE, 0),
514 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE, 0),
515 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE, 0),
516 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE, 16),
517 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE, 16),
518
519 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD, 0),
520 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD, 0),
521 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD, 16),
522 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD, 16),
523 EMPTY_HOWTO (90),
524 EMPTY_HOWTO (91),
525
526 #define TILEGX_IMM16_HOWTO_TLS_IE(name, rshift) \
527 HOWTO (name, rshift, 1, 16, FALSE, 0, \
528 complain_overflow_dont, bfd_elf_generic_reloc, \
529 #name, FALSE, 0, 0xffff, TRUE)
530
531 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X0_HW0_TLS_IE, 0),
532 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X1_HW0_TLS_IE, 0),
533
534 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL, 0),
535 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL, 0),
536 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL, 16),
537 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL, 16),
538 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL, 32),
539 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL, 32),
540
541 #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \
542 HOWTO (name, rshift, 1, 16, FALSE, 0, \
543 complain_overflow_signed, bfd_elf_generic_reloc, \
544 #name, FALSE, 0, 0xffff, TRUE)
545
546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0),
547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0),
548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16),
549 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16),
550 EMPTY_HOWTO (104),
551 EMPTY_HOWTO (105),
552
553 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont,
554 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64",
555 FALSE, 0, 0, TRUE),
556 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
557 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64",
558 FALSE, 0, -1, TRUE),
559 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont,
560 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64",
561 FALSE, 0, 0, TRUE),
562
563 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
564 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32",
565 FALSE, 0, 0, TRUE),
566 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield,
567 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32",
568 FALSE, 0, -1, TRUE),
569 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
570 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32",
571 FALSE, 0, 0, TRUE),
572
573 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */
574 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 27, /* bitsize */
577 TRUE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_signed,/* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_TILEGX_TLS_GD_CALL", /* name */
582 FALSE, /* partial_inplace */
583 0, /* src_mask */
584 -1, /* dst_mask */
585 TRUE), /* pcrel_offset */
586
587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8),
588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8),
589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8),
590 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8),
591 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8),
592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8),
593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8),
594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8),
595 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8),
596 };
597
598 static reloc_howto_type tilegx_elf_howto_table2 [] =
599 {
600 /* GNU extension to record C++ vtable hierarchy */
601 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */
602 0, /* rightshift */
603 4, /* size (0 = byte, 1 = short, 2 = long) */
604 0, /* bitsize */
605 FALSE, /* pc_relative */
606 0, /* bitpos */
607 complain_overflow_dont, /* complain_on_overflow */
608 NULL, /* special_function */
609 "R_TILEGX_GNU_VTINHERIT", /* name */
610 FALSE, /* partial_inplace */
611 0, /* src_mask */
612 0, /* dst_mask */
613 FALSE), /* pcrel_offset */
614
615 /* GNU extension to record C++ vtable member usage */
616 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */
617 0, /* rightshift */
618 4, /* size (0 = byte, 1 = short, 2 = long) */
619 0, /* bitsize */
620 FALSE, /* pc_relative */
621 0, /* bitpos */
622 complain_overflow_dont, /* complain_on_overflow */
623 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
624 "R_TILEGX_GNU_VTENTRY", /* name */
625 FALSE, /* partial_inplace */
626 0, /* src_mask */
627 0, /* dst_mask */
628 FALSE), /* pcrel_offset */
629
630 };
631 \f
632 /* Map BFD reloc types to TILEGX ELF reloc types. */
633
634 typedef struct tilegx_reloc_map
635 {
636 bfd_reloc_code_real_type bfd_reloc_val;
637 unsigned int tilegx_reloc_val;
638 reloc_howto_type * table;
639 } reloc_map;
640
641 static const reloc_map tilegx_reloc_map [] =
642 {
643 #define TH_REMAP(bfd, tilegx) \
644 { bfd, tilegx, tilegx_elf_howto_table },
645
646 /* Standard relocations. */
647 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE)
648 TH_REMAP (BFD_RELOC_64, R_TILEGX_64)
649 TH_REMAP (BFD_RELOC_32, R_TILEGX_32)
650 TH_REMAP (BFD_RELOC_16, R_TILEGX_16)
651 TH_REMAP (BFD_RELOC_8, R_TILEGX_8)
652 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL)
653 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL)
654 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL)
655 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL)
656
657 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t)
658
659 /* Custom relocations. */
660 SIMPLE_REMAP (TILEGX_HW0)
661 SIMPLE_REMAP (TILEGX_HW1)
662 SIMPLE_REMAP (TILEGX_HW2)
663 SIMPLE_REMAP (TILEGX_HW3)
664 SIMPLE_REMAP (TILEGX_HW0_LAST)
665 SIMPLE_REMAP (TILEGX_HW1_LAST)
666 SIMPLE_REMAP (TILEGX_HW2_LAST)
667 SIMPLE_REMAP (TILEGX_COPY)
668 SIMPLE_REMAP (TILEGX_GLOB_DAT)
669 SIMPLE_REMAP (TILEGX_JMP_SLOT)
670 SIMPLE_REMAP (TILEGX_RELATIVE)
671 SIMPLE_REMAP (TILEGX_BROFF_X1)
672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1)
673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT)
674 SIMPLE_REMAP (TILEGX_IMM8_X0)
675 SIMPLE_REMAP (TILEGX_IMM8_Y0)
676 SIMPLE_REMAP (TILEGX_IMM8_X1)
677 SIMPLE_REMAP (TILEGX_IMM8_Y1)
678 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1)
679 SIMPLE_REMAP (TILEGX_MT_IMM14_X1)
680 SIMPLE_REMAP (TILEGX_MF_IMM14_X1)
681 SIMPLE_REMAP (TILEGX_MMSTART_X0)
682 SIMPLE_REMAP (TILEGX_MMEND_X0)
683 SIMPLE_REMAP (TILEGX_SHAMT_X0)
684 SIMPLE_REMAP (TILEGX_SHAMT_X1)
685 SIMPLE_REMAP (TILEGX_SHAMT_Y0)
686 SIMPLE_REMAP (TILEGX_SHAMT_Y1)
687 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0)
688 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0)
689 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1)
690 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1)
691 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2)
692 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2)
693 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3)
694 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3)
695 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST)
696 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST)
697 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST)
698 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST)
699 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST)
700 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST)
701 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL)
702 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL)
703 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL)
704 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL)
705 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL)
706 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL)
707 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL)
708 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL)
709 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL)
710 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL)
711 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL)
712 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL)
713 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL)
714 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL)
715 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT)
716 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT)
717 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL)
718 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL)
719 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL)
720 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL)
721 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL)
722 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL)
723 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT)
724 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT)
725 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT)
726 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT)
727 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL)
728 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL)
729 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD)
730 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD)
731 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE)
732 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE)
733 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE)
734 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE)
735 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE)
736 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
737 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD)
738 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD)
739 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD)
740 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD)
741 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE)
742 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE)
743 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL)
744 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL)
745 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL)
746 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL)
747 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL)
748 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL)
749 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE)
750 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE)
751 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE)
752 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE)
753
754 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64)
755 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64)
756 SIMPLE_REMAP (TILEGX_TLS_TPOFF64)
757
758 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32)
759 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32)
760 SIMPLE_REMAP (TILEGX_TLS_TPOFF32)
761
762 SIMPLE_REMAP (TILEGX_TLS_GD_CALL)
763 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD)
764 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD)
765 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD)
766 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD)
767 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD)
768 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD)
769 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD)
770 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD)
771 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD)
772
773 #undef SIMPLE_REMAP
774 #undef TH_REMAP
775
776 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 },
777 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 },
778 };
779
780
781
782 /* The TILE-Gx linker needs to keep track of the number of relocs that it
783 decides to copy as dynamic relocs in check_relocs for each symbol.
784 This is so that it can later discard them if they are found to be
785 unnecessary. We store the information in a field extending the
786 regular ELF linker hash table. */
787
788 struct tilegx_elf_dyn_relocs
789 {
790 struct tilegx_elf_dyn_relocs *next;
791
792 /* The input section of the reloc. */
793 asection *sec;
794
795 /* Total number of relocs copied for the input section. */
796 bfd_size_type count;
797
798 /* Number of pc-relative relocs copied for the input section. */
799 bfd_size_type pc_count;
800 };
801
802 /* TILEGX ELF linker hash entry. */
803
804 struct tilegx_elf_link_hash_entry
805 {
806 struct elf_link_hash_entry elf;
807
808 /* Track dynamic relocs copied for this symbol. */
809 struct tilegx_elf_dyn_relocs *dyn_relocs;
810
811 #define GOT_UNKNOWN 0
812 #define GOT_NORMAL 1
813 #define GOT_TLS_GD 2
814 #define GOT_TLS_IE 4
815 unsigned char tls_type;
816 };
817
818 #define tilegx_elf_hash_entry(ent) \
819 ((struct tilegx_elf_link_hash_entry *)(ent))
820
821 struct _bfd_tilegx_elf_obj_tdata
822 {
823 struct elf_obj_tdata root;
824
825 /* tls_type for each local got entry. */
826 char *local_got_tls_type;
827 };
828
829 #define _bfd_tilegx_elf_tdata(abfd) \
830 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any)
831
832 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \
833 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type)
834
835 #define is_tilegx_elf(bfd) \
836 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
837 && elf_tdata (bfd) != NULL \
838 && elf_object_id (bfd) == TILEGX_ELF_DATA)
839
840 #include "elf/common.h"
841 #include "elf/internal.h"
842
843 struct tilegx_elf_link_hash_table
844 {
845 struct elf_link_hash_table elf;
846
847 int bytes_per_word;
848 int word_align_power;
849 int bytes_per_rela;
850 int dtpmod_reloc;
851 int dtpoff_reloc;
852 int tpoff_reloc;
853 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
854 bfd_vma (*r_symndx) (bfd_vma);
855 void (*put_word) (bfd *, bfd_vma, void *);
856 const char *dynamic_interpreter;
857
858 /* Whether LE transition has been disabled for some of the
859 sections. */
860 bfd_boolean disable_le_transition;
861
862 /* Small local sym to section mapping cache. */
863 struct sym_cache sym_cache;
864 };
865
866
867 /* Get the Tile ELF linker hash table from a link_info structure. */
868 #define tilegx_elf_hash_table(p) \
869 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
870 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL)
871
872 #ifdef BFD64
873 static bfd_vma
874 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
875 bfd_vma rel_index,
876 bfd_vma type)
877 {
878 return ELF64_R_INFO (rel_index, type);
879 }
880
881 static bfd_vma
882 tilegx_elf_r_symndx_64 (bfd_vma r_info)
883 {
884 return ELF64_R_SYM (r_info);
885 }
886
887 static void
888 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
889 {
890 bfd_put_64 (abfd, val, ptr);
891 }
892 #endif /* BFD64 */
893
894 static bfd_vma
895 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
896 bfd_vma rel_index,
897 bfd_vma type)
898 {
899 return ELF32_R_INFO (rel_index, type);
900 }
901
902 static bfd_vma
903 tilegx_elf_r_symndx_32 (bfd_vma r_info)
904 {
905 return ELF32_R_SYM (r_info);
906 }
907
908 static void
909 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
910 {
911 bfd_put_32 (abfd, val, ptr);
912 }
913
914 reloc_howto_type *
915 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
916 bfd_reloc_code_real_type code)
917 {
918 unsigned int i;
919
920 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;)
921 {
922 const reloc_map * entry;
923
924 entry = tilegx_reloc_map + i;
925
926 if (entry->bfd_reloc_val == code)
927 return entry->table + (entry->tilegx_reloc_val
928 - entry->table[0].type);
929 }
930
931 return NULL;
932 }
933
934 reloc_howto_type *
935 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
936 const char *r_name)
937 {
938 unsigned int i;
939
940 for (i = 0;
941 i < (sizeof (tilegx_elf_howto_table)
942 / sizeof (tilegx_elf_howto_table[0]));
943 i++)
944 if (tilegx_elf_howto_table[i].name != NULL
945 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
946 return &tilegx_elf_howto_table[i];
947
948 return NULL;
949 }
950
951 void
952 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
953 arelent *cache_ptr,
954 Elf_Internal_Rela *dst)
955 {
956 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
957
958 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
959 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
960 else if (r_type - R_TILEGX_GNU_VTINHERIT
961 <= (unsigned int) R_TILEGX_GNU_VTENTRY)
962 cache_ptr->howto
963 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
964 else
965 abort ();
966 }
967
968 typedef tilegx_bundle_bits (*tilegx_create_func)(int);
969
970 static const tilegx_create_func reloc_to_create_func[] =
971 {
972 /* The first twenty relocation types don't correspond to operands */
973 NULL,
974 NULL,
975 NULL,
976 NULL,
977 NULL,
978 NULL,
979 NULL,
980 NULL,
981 NULL,
982 NULL,
983 NULL,
984 NULL,
985 NULL,
986 NULL,
987 NULL,
988 NULL,
989 NULL,
990 NULL,
991 NULL,
992 NULL,
993
994 /* The remaining relocations are used for immediate operands */
995 create_BrOff_X1,
996 create_JumpOff_X1,
997 create_JumpOff_X1,
998 create_Imm8_X0,
999 create_Imm8_Y0,
1000 create_Imm8_X1,
1001 create_Imm8_Y1,
1002 create_Dest_Imm8_X1,
1003 create_MT_Imm14_X1,
1004 create_MF_Imm14_X1,
1005 create_BFStart_X0,
1006 create_BFEnd_X0,
1007 create_ShAmt_X0,
1008 create_ShAmt_X1,
1009 create_ShAmt_Y0,
1010 create_ShAmt_Y1,
1011 create_Imm16_X0,
1012 create_Imm16_X1,
1013 create_Imm16_X0,
1014 create_Imm16_X1,
1015 create_Imm16_X0,
1016 create_Imm16_X1,
1017 create_Imm16_X0,
1018 create_Imm16_X1,
1019 create_Imm16_X0,
1020 create_Imm16_X1,
1021 create_Imm16_X0,
1022 create_Imm16_X1,
1023 create_Imm16_X0,
1024 create_Imm16_X1,
1025 create_Imm16_X0,
1026 create_Imm16_X1,
1027 create_Imm16_X0,
1028 create_Imm16_X1,
1029 create_Imm16_X0,
1030 create_Imm16_X1,
1031 create_Imm16_X0,
1032 create_Imm16_X1,
1033 create_Imm16_X0,
1034 create_Imm16_X1,
1035 create_Imm16_X0,
1036 create_Imm16_X1,
1037 create_Imm16_X0,
1038 create_Imm16_X1,
1039 create_Imm16_X0,
1040 create_Imm16_X1,
1041 create_Imm16_X0,
1042 create_Imm16_X1,
1043 create_Imm16_X0,
1044 create_Imm16_X1,
1045 create_Imm16_X0,
1046 create_Imm16_X1,
1047 create_Imm16_X0,
1048 create_Imm16_X1,
1049 create_Imm16_X0,
1050 create_Imm16_X1,
1051 create_Imm16_X0,
1052 create_Imm16_X1,
1053 create_Imm16_X0,
1054 create_Imm16_X1,
1055 create_Imm16_X0,
1056 create_Imm16_X1,
1057 create_Imm16_X0,
1058 create_Imm16_X1,
1059 create_Imm16_X0,
1060 create_Imm16_X1,
1061 create_Imm16_X0,
1062 create_Imm16_X1,
1063 create_Imm16_X0,
1064 create_Imm16_X1,
1065 NULL,
1066 NULL,
1067 create_Imm16_X0,
1068 create_Imm16_X1,
1069 create_Imm16_X0,
1070 create_Imm16_X1,
1071 create_Imm16_X0,
1072 create_Imm16_X1,
1073 create_Imm16_X0,
1074 create_Imm16_X1,
1075 create_Imm16_X0,
1076 create_Imm16_X1,
1077 create_Imm16_X0,
1078 create_Imm16_X1,
1079 };
1080
1081 static void
1082 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
1083 {
1084 const struct elf_backend_data *bed;
1085 bfd_byte *loc;
1086
1087 bed = get_elf_backend_data (abfd);
1088 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
1089 bed->s->swap_reloca_out (abfd, rel, loc);
1090 }
1091
1092 /* PLT/GOT stuff */
1093
1094 /* The procedure linkage table starts with the following header:
1095
1096 ld_add r28, r27, 8
1097 ld r27, r27
1098 {
1099 jr r27
1100 info 10 ## SP not offset, return PC in LR
1101 }
1102
1103 Subsequent entries are the following, jumping to the header at the end:
1104
1105 {
1106 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET>
1107 lnk r26
1108 }
1109 1:
1110 {
1111 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1112 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1113 }
1114 {
1115 add r28, r26, r28
1116 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1117 }
1118 {
1119 add r27, r26, r27
1120 ld r28, r28
1121 info 10 ## SP not offset, return PC in LR
1122 }
1123 {
1124 shl16insli r29, zero, MY_PLT_INDEX
1125 jr r28
1126 }
1127
1128 This code sequence lets the code at at the start of the PLT determine
1129 which PLT entry was executed by examining 'r29'.
1130
1131 Note that MY_PLT_INDEX skips over the header entries, so the first
1132 actual jump table entry has index zero.
1133
1134 If the offset fits in 16 bits,
1135
1136 lnk r26
1137 1:
1138 {
1139 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1140 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1141 }
1142 {
1143 shl16insli r29, zero, MY_PLT_INDEX
1144 ld r28, r28
1145 }
1146 {
1147 add r27, r26, r27
1148 jr r28
1149 }
1150 info 10 ## SP not offset, return PC in LR
1151
1152 For the purpose of backtracing, the procedure linkage table ends with the
1153 following tail entry:
1154
1155 info 10 ## SP not offset, return PC in LR
1156
1157 The 32-bit versions are similar, with ld4s replacing ld, and offsets into
1158 the GOT being multiples of 4 instead of 8.
1159
1160 */
1161
1162 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1163 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1164 #define PLT_TAIL_SIZE_IN_BUNDLES 1
1165
1166 #define PLT_HEADER_SIZE \
1167 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1168 #define PLT_ENTRY_SIZE \
1169 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1170 #define PLT_TAIL_SIZE \
1171 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1172
1173 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab)
1174
1175 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab))
1176
1177 static const bfd_byte
1178 tilegx64_plt0_entry[PLT_HEADER_SIZE] =
1179 {
1180 0x00, 0x30, 0x48, 0x51,
1181 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */
1182 0x00, 0x30, 0xbc, 0x35,
1183 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */
1184 0xff, 0xaf, 0x30, 0x40,
1185 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1186 };
1187
1188 static const bfd_byte
1189 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] =
1190 {
1191 0xdc, 0x0f, 0x00, 0x10,
1192 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1193 0xdb, 0x0f, 0x00, 0x10,
1194 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1195 0x9c, 0xc6, 0x0d, 0xd0,
1196 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1197 0x9b, 0xb6, 0xc5, 0xad,
1198 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1199 0xdd, 0x0f, 0x00, 0x70,
1200 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1201 };
1202
1203 static const bfd_byte
1204 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] =
1205 {
1206 0x00, 0x30, 0x48, 0x51,
1207 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1208 0x9c, 0x06, 0x00, 0x90,
1209 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1210 0xdd, 0x0f, 0x00, 0x70,
1211 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */
1212 0x9b, 0xb6, 0x0d, 0x50,
1213 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1214 0x00, 0x30, 0x48, 0xd1,
1215 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1216 };
1217
1218 /* Reuse an existing info 10 bundle. */
1219 static const bfd_byte *const tilegx64_plt_tail_entry =
1220 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1221
1222 static const bfd_byte
1223 tilegx32_plt0_entry[PLT_HEADER_SIZE] =
1224 {
1225 0x00, 0x30, 0x48, 0x51,
1226 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */
1227 0x00, 0x30, 0xbc, 0x35,
1228 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */
1229 0xff, 0xaf, 0x30, 0x40,
1230 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1231 };
1232
1233 static const bfd_byte
1234 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] =
1235 {
1236 0xdc, 0x0f, 0x00, 0x10,
1237 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1238 0xdb, 0x0f, 0x00, 0x10,
1239 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1240 0x9c, 0xc6, 0x0d, 0xd0,
1241 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1242 0x9b, 0xb6, 0xc5, 0xad,
1243 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */
1244 0xdd, 0x0f, 0x00, 0x70,
1245 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1246 };
1247
1248 static const bfd_byte
1249 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] =
1250 {
1251 0x00, 0x30, 0x48, 0x51,
1252 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1253 0x9c, 0x06, 0x00, 0x90,
1254 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1255 0xdd, 0x0f, 0x00, 0x70,
1256 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */
1257 0x9b, 0xb6, 0x0d, 0x50,
1258 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1259 0x00, 0x30, 0x48, 0xd1,
1260 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1261 };
1262
1263 /* Reuse an existing info 10 bundle. */
1264 static const bfd_byte *const tilegx32_plt_tail_entry =
1265 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1266
1267 static int
1268 tilegx_plt_entry_build (bfd *output_bfd,
1269 struct tilegx_elf_link_hash_table *htab,
1270 asection *splt, asection *sgotplt,
1271 bfd_vma offset, bfd_vma *r_offset)
1272 {
1273 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
1274 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab)
1275 + GOTPLT_HEADER_SIZE (htab));
1276 tilegx_bundle_bits *pc;
1277
1278 /* Compute the distance from the got entry to the lnk. */
1279 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1280 + sgotplt->output_offset
1281 + got_offset
1282 - splt->output_section->vma
1283 - splt->output_offset
1284 - offset
1285 - TILEGX_BUNDLE_SIZE_IN_BYTES;
1286
1287 /* Compute the distance to GOTPLT[0]. */
1288 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1289
1290 /* Check whether we can use the short plt entry with 16-bit offset. */
1291 bfd_boolean short_plt_entry =
1292 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1293
1294 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *)
1295 (ABI_64_P (output_bfd) ?
1296 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) :
1297 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry));
1298
1299 /* Copy the plt entry template. */
1300 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE);
1301
1302 /* Write the immediate offsets. */
1303 pc = (tilegx_bundle_bits *)(splt->contents + offset);
1304
1305 if (short_plt_entry)
1306 {
1307 /* { lnk r28 } */
1308 pc++;
1309
1310 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */
1311 *pc++ |= create_Imm16_X0 (dist_got_entry)
1312 | create_Imm16_X1 (dist_got0);
1313
1314 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */
1315 *pc++ |= create_Imm16_X0 (plt_index);
1316 }
1317 else
1318 {
1319 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */
1320 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16);
1321
1322 /* { moveli r27, &GOTPLT[0] ;
1323 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */
1324 *pc++ |= create_Imm16_X0 (dist_got0 >> 16)
1325 | create_Imm16_X1 (dist_got_entry);
1326
1327 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */
1328 *pc++ |= create_Imm16_X1 (dist_got0);
1329
1330 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1331 pc++;
1332
1333 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */
1334 *pc++ |= create_Imm16_X0 (plt_index);
1335 }
1336
1337 /* Set the relocation offset. */
1338 *r_offset = got_offset;
1339
1340 return plt_index;
1341 }
1342
1343 /* Create an entry in an TILEGX ELF linker hash table. */
1344
1345 static struct bfd_hash_entry *
1346 link_hash_newfunc (struct bfd_hash_entry *entry,
1347 struct bfd_hash_table *table, const char *string)
1348 {
1349 /* Allocate the structure if it has not already been allocated by a
1350 subclass. */
1351 if (entry == NULL)
1352 {
1353 entry =
1354 bfd_hash_allocate (table,
1355 sizeof (struct tilegx_elf_link_hash_entry));
1356 if (entry == NULL)
1357 return entry;
1358 }
1359
1360 /* Call the allocation method of the superclass. */
1361 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1362 if (entry != NULL)
1363 {
1364 struct tilegx_elf_link_hash_entry *eh;
1365
1366 eh = (struct tilegx_elf_link_hash_entry *) entry;
1367 eh->dyn_relocs = NULL;
1368 eh->tls_type = GOT_UNKNOWN;
1369 }
1370
1371 return entry;
1372 }
1373
1374 /* Create a TILEGX ELF linker hash table. */
1375
1376 struct bfd_link_hash_table *
1377 tilegx_elf_link_hash_table_create (bfd *abfd)
1378 {
1379 struct tilegx_elf_link_hash_table *ret;
1380 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table);
1381
1382 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1383 if (ret == NULL)
1384 return NULL;
1385
1386 #ifdef BFD64
1387 if (ABI_64_P (abfd))
1388 {
1389 ret->bytes_per_word = 8;
1390 ret->word_align_power = 3;
1391 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1392 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1393 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1394 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1395 ret->r_info = tilegx_elf_r_info_64;
1396 ret->r_symndx = tilegx_elf_r_symndx_64;
1397 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1398 ret->put_word = tilegx_put_word_64;
1399 }
1400 else
1401 #endif
1402 {
1403 ret->bytes_per_word = 4;
1404 ret->word_align_power = 2;
1405 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1406 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1407 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1408 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1409 ret->r_info = tilegx_elf_r_info_32;
1410 ret->r_symndx = tilegx_elf_r_symndx_32;
1411 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1412 ret->put_word = tilegx_put_word_32;
1413 }
1414
1415 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1416 sizeof (struct tilegx_elf_link_hash_entry),
1417 TILEGX_ELF_DATA))
1418 {
1419 free (ret);
1420 return NULL;
1421 }
1422
1423 return &ret->elf.root;
1424 }
1425
1426 /* Create the .got section. */
1427
1428 static bfd_boolean
1429 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1430 {
1431 flagword flags;
1432 asection *s, *s_got;
1433 struct elf_link_hash_entry *h;
1434 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1435 struct elf_link_hash_table *htab = elf_hash_table (info);
1436
1437 /* This function may be called more than once. */
1438 if (htab->sgot != NULL)
1439 return TRUE;
1440
1441 flags = bed->dynamic_sec_flags;
1442
1443 s = bfd_make_section_anyway_with_flags (abfd,
1444 (bed->rela_plts_and_copies_p
1445 ? ".rela.got" : ".rel.got"),
1446 (bed->dynamic_sec_flags
1447 | SEC_READONLY));
1448 if (s == NULL
1449 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1450 return FALSE;
1451 htab->srelgot = s;
1452
1453 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
1454 if (s == NULL
1455 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1456 return FALSE;
1457 htab->sgot = s;
1458
1459 /* The first bit of the global offset table is the header. */
1460 s->size += bed->got_header_size;
1461
1462 if (bed->want_got_plt)
1463 {
1464 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
1465 if (s == NULL
1466 || !bfd_set_section_alignment (abfd, s,
1467 bed->s->log_file_align))
1468 return FALSE;
1469 htab->sgotplt = s;
1470
1471 /* Reserve room for the header. */
1472 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1473 }
1474
1475 if (bed->want_got_sym)
1476 {
1477 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1478 section. We don't do this in the linker script because we don't want
1479 to define the symbol if we are not creating a global offset
1480 table. */
1481 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1482 "_GLOBAL_OFFSET_TABLE_");
1483 elf_hash_table (info)->hgot = h;
1484 if (h == NULL)
1485 return FALSE;
1486 }
1487
1488 return TRUE;
1489 }
1490
1491 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1492 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1493 hash table. */
1494
1495 bfd_boolean
1496 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1497 struct bfd_link_info *info)
1498 {
1499 if (!tilegx_elf_create_got_section (dynobj, info))
1500 return FALSE;
1501
1502 return _bfd_elf_create_dynamic_sections (dynobj, info);
1503 }
1504
1505 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1506
1507 void
1508 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1509 struct elf_link_hash_entry *dir,
1510 struct elf_link_hash_entry *ind)
1511 {
1512 struct tilegx_elf_link_hash_entry *edir, *eind;
1513
1514 edir = (struct tilegx_elf_link_hash_entry *) dir;
1515 eind = (struct tilegx_elf_link_hash_entry *) ind;
1516
1517 if (eind->dyn_relocs != NULL)
1518 {
1519 if (edir->dyn_relocs != NULL)
1520 {
1521 struct tilegx_elf_dyn_relocs **pp;
1522 struct tilegx_elf_dyn_relocs *p;
1523
1524 /* Add reloc counts against the indirect sym to the direct sym
1525 list. Merge any entries against the same section. */
1526 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1527 {
1528 struct tilegx_elf_dyn_relocs *q;
1529
1530 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1531 if (q->sec == p->sec)
1532 {
1533 q->pc_count += p->pc_count;
1534 q->count += p->count;
1535 *pp = p->next;
1536 break;
1537 }
1538 if (q == NULL)
1539 pp = &p->next;
1540 }
1541 *pp = edir->dyn_relocs;
1542 }
1543
1544 edir->dyn_relocs = eind->dyn_relocs;
1545 eind->dyn_relocs = NULL;
1546 }
1547
1548 if (ind->root.type == bfd_link_hash_indirect
1549 && dir->got.refcount <= 0)
1550 {
1551 edir->tls_type = eind->tls_type;
1552 eind->tls_type = GOT_UNKNOWN;
1553 }
1554 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1555 }
1556
1557 static int
1558 tilegx_tls_translate_to_le (int r_type)
1559 {
1560 switch (r_type)
1561 {
1562 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1563 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1564 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1565
1566 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1567 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1568 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1569
1570 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1571 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1572 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1573
1574 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1575 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1576 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1577
1578 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1579 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1580 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1581
1582 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1583 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1584 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1585 }
1586 return r_type;
1587 }
1588
1589 static int
1590 tilegx_tls_translate_to_ie (int r_type)
1591 {
1592 switch (r_type)
1593 {
1594 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1595 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1596 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1597
1598 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1599 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1600 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1601
1602 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1603 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1604 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1605
1606 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1607 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1608 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1609
1610 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1611 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1612 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1613
1614 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1615 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1616 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1617 }
1618 return r_type;
1619 }
1620
1621 static int
1622 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1623 int is_local, bfd_boolean disable_le_transition)
1624 {
1625 if (!bfd_link_executable (info))
1626 return r_type;
1627
1628 if (is_local && !disable_le_transition)
1629 return tilegx_tls_translate_to_le (r_type);
1630 else
1631 return tilegx_tls_translate_to_ie (r_type);
1632 }
1633
1634 /* Look through the relocs for a section during the first phase, and
1635 allocate space in the global offset table or procedure linkage
1636 table. */
1637
1638 bfd_boolean
1639 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1640 asection *sec, const Elf_Internal_Rela *relocs)
1641 {
1642 struct tilegx_elf_link_hash_table *htab;
1643 Elf_Internal_Shdr *symtab_hdr;
1644 struct elf_link_hash_entry **sym_hashes;
1645 const Elf_Internal_Rela *rel;
1646 const Elf_Internal_Rela *rel_end;
1647 asection *sreloc;
1648 int num_relocs;
1649 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE;
1650
1651 if (bfd_link_relocatable (info))
1652 return TRUE;
1653
1654 htab = tilegx_elf_hash_table (info);
1655 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1656 sym_hashes = elf_sym_hashes (abfd);
1657
1658 sreloc = NULL;
1659
1660 num_relocs = sec->reloc_count;
1661
1662 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1663
1664 if (htab->elf.dynobj == NULL)
1665 htab->elf.dynobj = abfd;
1666
1667 rel_end = relocs + num_relocs;
1668
1669 /* Check whether to do optimization to transform TLS GD/IE
1670 referehces to TLS LE. We disable it if we're linking with old
1671 TLS code sequences that do not support such optimization. Old
1672 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1673 no tls_add relocations. */
1674 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1675 {
1676 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1677 switch (r_type)
1678 {
1679 case R_TILEGX_TLS_GD_CALL:
1680 case R_TILEGX_TLS_IE_LOAD:
1681 has_tls_gd_or_ie = TRUE;
1682 break;
1683 case R_TILEGX_IMM8_X0_TLS_ADD:
1684 case R_TILEGX_IMM8_Y0_TLS_ADD:
1685 case R_TILEGX_IMM8_X1_TLS_ADD:
1686 case R_TILEGX_IMM8_Y1_TLS_ADD:
1687 has_tls_add = TRUE;
1688 break;
1689 }
1690 }
1691
1692 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1693 htab->disable_le_transition |= sec->sec_flg0;
1694
1695 for (rel = relocs; rel < rel_end; rel++)
1696 {
1697 unsigned int r_type;
1698 unsigned int r_symndx;
1699 struct elf_link_hash_entry *h;
1700 int tls_type;
1701
1702 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1703 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1704
1705 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1706 {
1707 /* xgettext:c-format */
1708 _bfd_error_handler (_("%B: bad symbol index: %d"),
1709 abfd, r_symndx);
1710 return FALSE;
1711 }
1712
1713 if (r_symndx < symtab_hdr->sh_info)
1714 h = NULL;
1715 else
1716 {
1717 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1718 while (h->root.type == bfd_link_hash_indirect
1719 || h->root.type == bfd_link_hash_warning)
1720 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1721 }
1722
1723 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1724 sec->sec_flg0);
1725 switch (r_type)
1726 {
1727 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1728 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1729 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1730 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1731 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1732 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1733 if (!bfd_link_executable (info))
1734 goto r_tilegx_plt32;
1735 break;
1736
1737 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1738 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1739 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1740 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1741 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1742 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1743 BFD_ASSERT (bfd_link_pic (info));
1744 tls_type = GOT_TLS_GD;
1745 goto have_got_reference;
1746
1747 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1748 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1749 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1750 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1751 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1752 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1753 tls_type = GOT_TLS_IE;
1754 if (!bfd_link_executable (info))
1755 info->flags |= DF_STATIC_TLS;
1756 goto have_got_reference;
1757
1758 case R_TILEGX_IMM16_X0_HW0_GOT:
1759 case R_TILEGX_IMM16_X1_HW0_GOT:
1760 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1761 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1762 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1763 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1764 tls_type = GOT_NORMAL;
1765 /* Fall Through */
1766
1767 have_got_reference:
1768 /* This symbol requires a global offset table entry. */
1769 {
1770 int old_tls_type;
1771
1772 if (h != NULL)
1773 {
1774 h->got.refcount += 1;
1775 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1776 }
1777 else
1778 {
1779 bfd_signed_vma *local_got_refcounts;
1780
1781 /* This is a global offset table entry for a local symbol. */
1782 local_got_refcounts = elf_local_got_refcounts (abfd);
1783 if (local_got_refcounts == NULL)
1784 {
1785 bfd_size_type size;
1786
1787 size = symtab_hdr->sh_info;
1788 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1789 local_got_refcounts = ((bfd_signed_vma *)
1790 bfd_zalloc (abfd, size));
1791 if (local_got_refcounts == NULL)
1792 return FALSE;
1793 elf_local_got_refcounts (abfd) = local_got_refcounts;
1794 _bfd_tilegx_elf_local_got_tls_type (abfd)
1795 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1796 }
1797 local_got_refcounts[r_symndx] += 1;
1798 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1799 }
1800
1801 /* If a TLS symbol is accessed using IE at least once,
1802 there is no point to use dynamic model for it. */
1803 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1804 && (old_tls_type != GOT_TLS_GD
1805 || tls_type != GOT_TLS_IE))
1806 {
1807 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1808 tls_type = old_tls_type;
1809 else
1810 {
1811 _bfd_error_handler
1812 /* xgettext:c-format */
1813 (_("%B: `%s' accessed both as normal and thread local symbol"),
1814 abfd, h ? h->root.root.string : "<local>");
1815 return FALSE;
1816 }
1817 }
1818
1819 if (old_tls_type != tls_type)
1820 {
1821 if (h != NULL)
1822 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1823 else
1824 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1825 }
1826 }
1827
1828 if (htab->elf.sgot == NULL)
1829 {
1830 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1831 return FALSE;
1832 }
1833 break;
1834
1835 case R_TILEGX_TLS_GD_CALL:
1836 if (!bfd_link_executable (info))
1837 {
1838 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1839 against __tls_get_addr. */
1840 struct bfd_link_hash_entry *bh = NULL;
1841 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1842 "__tls_get_addr", 0,
1843 bfd_und_section_ptr, 0,
1844 NULL, FALSE, FALSE,
1845 &bh))
1846 return FALSE;
1847 h = (struct elf_link_hash_entry *) bh;
1848 }
1849 else
1850 break;
1851 /* Fall through */
1852
1853 case R_TILEGX_JUMPOFF_X1_PLT:
1854 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
1855 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
1856 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
1857 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
1858 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
1859 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
1860 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
1861 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
1862 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
1863 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
1864 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
1865 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
1866 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
1867 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
1868 /* This symbol requires a procedure linkage table entry. We
1869 actually build the entry in adjust_dynamic_symbol,
1870 because this might be a case of linking PIC code without
1871 linking in any dynamic objects, in which case we don't
1872 need to generate a procedure linkage table after all. */
1873
1874 if (h != NULL)
1875 {
1876 h->needs_plt = 1;
1877 h->plt.refcount += 1;
1878 }
1879 break;
1880
1881 case R_TILEGX_64_PCREL:
1882 case R_TILEGX_32_PCREL:
1883 case R_TILEGX_16_PCREL:
1884 case R_TILEGX_8_PCREL:
1885 case R_TILEGX_IMM16_X0_HW0_PCREL:
1886 case R_TILEGX_IMM16_X1_HW0_PCREL:
1887 case R_TILEGX_IMM16_X0_HW1_PCREL:
1888 case R_TILEGX_IMM16_X1_HW1_PCREL:
1889 case R_TILEGX_IMM16_X0_HW2_PCREL:
1890 case R_TILEGX_IMM16_X1_HW2_PCREL:
1891 case R_TILEGX_IMM16_X0_HW3_PCREL:
1892 case R_TILEGX_IMM16_X1_HW3_PCREL:
1893 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1894 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1895 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1896 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1897 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1898 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1899 if (h != NULL)
1900 h->non_got_ref = 1;
1901
1902 if (h != NULL
1903 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1904 break;
1905 /* Fall through. */
1906
1907 case R_TILEGX_64:
1908 case R_TILEGX_32:
1909 case R_TILEGX_16:
1910 case R_TILEGX_8:
1911 case R_TILEGX_HW0:
1912 case R_TILEGX_HW1:
1913 case R_TILEGX_HW2:
1914 case R_TILEGX_HW3:
1915 case R_TILEGX_HW0_LAST:
1916 case R_TILEGX_HW1_LAST:
1917 case R_TILEGX_HW2_LAST:
1918 case R_TILEGX_COPY:
1919 case R_TILEGX_GLOB_DAT:
1920 case R_TILEGX_JMP_SLOT:
1921 case R_TILEGX_RELATIVE:
1922 case R_TILEGX_BROFF_X1:
1923 case R_TILEGX_JUMPOFF_X1:
1924 case R_TILEGX_IMM8_X0:
1925 case R_TILEGX_IMM8_Y0:
1926 case R_TILEGX_IMM8_X1:
1927 case R_TILEGX_IMM8_Y1:
1928 case R_TILEGX_DEST_IMM8_X1:
1929 case R_TILEGX_MT_IMM14_X1:
1930 case R_TILEGX_MF_IMM14_X1:
1931 case R_TILEGX_MMSTART_X0:
1932 case R_TILEGX_MMEND_X0:
1933 case R_TILEGX_SHAMT_X0:
1934 case R_TILEGX_SHAMT_X1:
1935 case R_TILEGX_SHAMT_Y0:
1936 case R_TILEGX_SHAMT_Y1:
1937 case R_TILEGX_IMM16_X0_HW0:
1938 case R_TILEGX_IMM16_X1_HW0:
1939 case R_TILEGX_IMM16_X0_HW1:
1940 case R_TILEGX_IMM16_X1_HW1:
1941 case R_TILEGX_IMM16_X0_HW2:
1942 case R_TILEGX_IMM16_X1_HW2:
1943 case R_TILEGX_IMM16_X0_HW3:
1944 case R_TILEGX_IMM16_X1_HW3:
1945 case R_TILEGX_IMM16_X0_HW0_LAST:
1946 case R_TILEGX_IMM16_X1_HW0_LAST:
1947 case R_TILEGX_IMM16_X0_HW1_LAST:
1948 case R_TILEGX_IMM16_X1_HW1_LAST:
1949 case R_TILEGX_IMM16_X0_HW2_LAST:
1950 case R_TILEGX_IMM16_X1_HW2_LAST:
1951 if (h != NULL)
1952 h->non_got_ref = 1;
1953
1954 r_tilegx_plt32:
1955 if (h != NULL && !bfd_link_pic (info))
1956 {
1957 /* We may need a .plt entry if the function this reloc
1958 refers to is in a shared lib. */
1959 h->plt.refcount += 1;
1960 }
1961
1962 /* If we are creating a shared library, and this is a reloc
1963 against a global symbol, or a non PC relative reloc
1964 against a local symbol, then we need to copy the reloc
1965 into the shared library. However, if we are linking with
1966 -Bsymbolic, we do not need to copy a reloc against a
1967 global symbol which is defined in an object we are
1968 including in the link (i.e., DEF_REGULAR is set). At
1969 this point we have not seen all the input files, so it is
1970 possible that DEF_REGULAR is not set now but will be set
1971 later (it is never cleared). In case of a weak definition,
1972 DEF_REGULAR may be cleared later by a strong definition in
1973 a shared library. We account for that possibility below by
1974 storing information in the relocs_copied field of the hash
1975 table entry. A similar situation occurs when creating
1976 shared libraries and symbol visibility changes render the
1977 symbol local.
1978
1979 If on the other hand, we are creating an executable, we
1980 may need to keep relocations for symbols satisfied by a
1981 dynamic library if we manage to avoid copy relocs for the
1982 symbol. */
1983 if ((bfd_link_pic (info)
1984 && (sec->flags & SEC_ALLOC) != 0
1985 && (! tilegx_elf_howto_table[r_type].pc_relative
1986 || (h != NULL
1987 && (! info->symbolic
1988 || h->root.type == bfd_link_hash_defweak
1989 || !h->def_regular))))
1990 || (!bfd_link_pic (info)
1991 && (sec->flags & SEC_ALLOC) != 0
1992 && h != NULL
1993 && (h->root.type == bfd_link_hash_defweak
1994 || !h->def_regular)))
1995 {
1996 struct tilegx_elf_dyn_relocs *p;
1997 struct tilegx_elf_dyn_relocs **head;
1998
1999 /* When creating a shared object, we must copy these
2000 relocs into the output file. We create a reloc
2001 section in dynobj and make room for the reloc. */
2002 if (sreloc == NULL)
2003 {
2004 sreloc = _bfd_elf_make_dynamic_reloc_section
2005 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
2006 /*rela?*/ TRUE);
2007
2008 if (sreloc == NULL)
2009 return FALSE;
2010 }
2011
2012 /* If this is a global symbol, we count the number of
2013 relocations we need for this symbol. */
2014 if (h != NULL)
2015 head =
2016 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs;
2017 else
2018 {
2019 /* Track dynamic relocs needed for local syms too.
2020 We really need local syms available to do this
2021 easily. Oh well. */
2022
2023 asection *s;
2024 void *vpp;
2025 Elf_Internal_Sym *isym;
2026
2027 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2028 abfd, r_symndx);
2029 if (isym == NULL)
2030 return FALSE;
2031
2032 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2033 if (s == NULL)
2034 s = sec;
2035
2036 vpp = &elf_section_data (s)->local_dynrel;
2037 head = (struct tilegx_elf_dyn_relocs **) vpp;
2038 }
2039
2040 p = *head;
2041 if (p == NULL || p->sec != sec)
2042 {
2043 bfd_size_type amt = sizeof *p;
2044 p = ((struct tilegx_elf_dyn_relocs *)
2045 bfd_alloc (htab->elf.dynobj, amt));
2046 if (p == NULL)
2047 return FALSE;
2048 p->next = *head;
2049 *head = p;
2050 p->sec = sec;
2051 p->count = 0;
2052 p->pc_count = 0;
2053 }
2054
2055 p->count += 1;
2056 if (tilegx_elf_howto_table[r_type].pc_relative)
2057 p->pc_count += 1;
2058 }
2059
2060 break;
2061
2062 case R_TILEGX_GNU_VTINHERIT:
2063 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2064 return FALSE;
2065 break;
2066
2067 case R_TILEGX_GNU_VTENTRY:
2068 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2069 return FALSE;
2070 break;
2071
2072 default:
2073 break;
2074 }
2075 }
2076
2077 return TRUE;
2078 }
2079
2080 \f
2081 asection *
2082 tilegx_elf_gc_mark_hook (asection *sec,
2083 struct bfd_link_info *info,
2084 Elf_Internal_Rela *rel,
2085 struct elf_link_hash_entry *h,
2086 Elf_Internal_Sym *sym)
2087 {
2088 if (h != NULL)
2089 {
2090 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2091 {
2092 case R_TILEGX_GNU_VTINHERIT:
2093 case R_TILEGX_GNU_VTENTRY:
2094 return NULL;
2095 }
2096 }
2097
2098 /* FIXME: The test here, in check_relocs and in relocate_section
2099 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
2100 if (bfd_link_pic (info))
2101 {
2102 struct bfd_link_hash_entry *bh;
2103
2104 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2105 {
2106 case R_TILEGX_TLS_GD_CALL:
2107 /* This reloc implicitly references __tls_get_addr. We know
2108 another reloc will reference the same symbol as the one
2109 on this reloc, so the real symbol and section will be
2110 gc marked when processing the other reloc. That lets
2111 us handle __tls_get_addr here. */
2112 bh = NULL;
2113 if (! _bfd_generic_link_add_one_symbol (info, sec->owner,
2114 "__tls_get_addr", 0,
2115 bfd_und_section_ptr,
2116 0, NULL, FALSE,
2117 FALSE, &bh))
2118 return NULL;
2119 h = (struct elf_link_hash_entry *) bh;
2120 BFD_ASSERT (h != NULL);
2121 h->mark = 1;
2122 if (h->is_weakalias)
2123 weakdef (h)->mark = 1;
2124 sym = NULL;
2125 }
2126 }
2127
2128 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2129 }
2130
2131 /* Adjust a symbol defined by a dynamic object and referenced by a
2132 regular object. The current definition is in some section of the
2133 dynamic object, but we're not including those sections. We have to
2134 change the definition to something the rest of the link can
2135 understand. */
2136
2137 bfd_boolean
2138 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2139 struct elf_link_hash_entry *h)
2140 {
2141 struct tilegx_elf_link_hash_table *htab;
2142 struct tilegx_elf_link_hash_entry * eh;
2143 struct tilegx_elf_dyn_relocs *p;
2144 bfd *dynobj;
2145 asection *s, *srel;
2146
2147 htab = tilegx_elf_hash_table (info);
2148 BFD_ASSERT (htab != NULL);
2149
2150 dynobj = htab->elf.dynobj;
2151
2152 /* Make sure we know what is going on here. */
2153 BFD_ASSERT (dynobj != NULL
2154 && (h->needs_plt
2155 || h->is_weakalias
2156 || (h->def_dynamic
2157 && h->ref_regular
2158 && !h->def_regular)));
2159
2160 /* If this is a function, put it in the procedure linkage table. We
2161 will fill in the contents of the procedure linkage table later
2162 (although we could actually do it here). */
2163 if (h->type == STT_FUNC || h->needs_plt)
2164 {
2165 if (h->plt.refcount <= 0
2166 || SYMBOL_CALLS_LOCAL (info, h)
2167 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2168 && h->root.type == bfd_link_hash_undefweak))
2169 {
2170 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2171 reloc in an input file, but the symbol was never referred
2172 to by a dynamic object, or if all references were garbage
2173 collected. In such a case, we don't actually need to build
2174 a procedure linkage table, and we can just do a
2175 R_TILEGX_JUMPOFF_X1 relocation instead. */
2176 h->plt.offset = (bfd_vma) -1;
2177 h->needs_plt = 0;
2178 }
2179
2180 return TRUE;
2181 }
2182 else
2183 h->plt.offset = (bfd_vma) -1;
2184
2185 /* If this is a weak symbol, and there is a real definition, the
2186 processor independent code will have arranged for us to see the
2187 real definition first, and we can just use the same value. */
2188 if (h->is_weakalias)
2189 {
2190 struct elf_link_hash_entry *def = weakdef (h);
2191 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2192 h->root.u.def.section = def->root.u.def.section;
2193 h->root.u.def.value = def->root.u.def.value;
2194 return TRUE;
2195 }
2196
2197 /* This is a reference to a symbol defined by a dynamic object which
2198 is not a function. */
2199
2200 /* If we are creating a shared library, we must presume that the
2201 only references to the symbol are via the global offset table.
2202 For such cases we need not do anything here; the relocations will
2203 be handled correctly by relocate_section. */
2204 if (bfd_link_pic (info))
2205 return TRUE;
2206
2207 /* If there are no references to this symbol that do not use the
2208 GOT, we don't need to generate a copy reloc. */
2209 if (!h->non_got_ref)
2210 return TRUE;
2211
2212 /* If -z nocopyreloc was given, we won't generate them either. */
2213 if (info->nocopyreloc)
2214 {
2215 h->non_got_ref = 0;
2216 return TRUE;
2217 }
2218
2219 eh = (struct tilegx_elf_link_hash_entry *) h;
2220 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2221 {
2222 s = p->sec->output_section;
2223 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2224 break;
2225 }
2226
2227 /* If we didn't find any dynamic relocs in read-only sections, then
2228 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2229 if (p == NULL)
2230 {
2231 h->non_got_ref = 0;
2232 return TRUE;
2233 }
2234
2235 /* We must allocate the symbol in our .dynbss section, which will
2236 become part of the .bss section of the executable. There will be
2237 an entry for this symbol in the .dynsym section. The dynamic
2238 object will contain position independent code, so all references
2239 from the dynamic object to this symbol will go through the global
2240 offset table. The dynamic linker will use the .dynsym entry to
2241 determine the address it must put in the global offset table, so
2242 both the dynamic object and the regular object will refer to the
2243 same memory location for the variable. */
2244
2245 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2246 to copy the initial value out of the dynamic object and into the
2247 runtime process image. We need to remember the offset into the
2248 .rel.bss section we are going to use. */
2249 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2250 {
2251 s = htab->elf.sdynrelro;
2252 srel = htab->elf.sreldynrelro;
2253 }
2254 else
2255 {
2256 s = htab->elf.sdynbss;
2257 srel = htab->elf.srelbss;
2258 }
2259 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2260 {
2261 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2262 h->needs_copy = 1;
2263 }
2264
2265 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2266 }
2267
2268 /* Allocate space in .plt, .got and associated reloc sections for
2269 dynamic relocs. */
2270
2271 static bfd_boolean
2272 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2273 {
2274 struct bfd_link_info *info;
2275 struct tilegx_elf_link_hash_table *htab;
2276 struct tilegx_elf_link_hash_entry *eh;
2277 struct tilegx_elf_dyn_relocs *p;
2278
2279 if (h->root.type == bfd_link_hash_indirect)
2280 return TRUE;
2281
2282 info = (struct bfd_link_info *) inf;
2283 htab = tilegx_elf_hash_table (info);
2284 BFD_ASSERT (htab != NULL);
2285
2286 if (htab->elf.dynamic_sections_created
2287 && h->plt.refcount > 0)
2288 {
2289 /* Make sure this symbol is output as a dynamic symbol.
2290 Undefined weak syms won't yet be marked as dynamic. */
2291 if (h->dynindx == -1
2292 && !h->forced_local)
2293 {
2294 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2295 return FALSE;
2296 }
2297
2298 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2299 {
2300 asection *s = htab->elf.splt;
2301
2302 /* Allocate room for the header and tail. */
2303 if (s->size == 0)
2304 {
2305 s->size = PLT_ENTRY_SIZE;
2306 }
2307
2308 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE;
2309
2310 /* If this symbol is not defined in a regular file, and we are
2311 not generating a shared library, then set the symbol to this
2312 location in the .plt. This is required to make function
2313 pointers compare as equal between the normal executable and
2314 the shared library. */
2315 if (! bfd_link_pic (info)
2316 && !h->def_regular)
2317 {
2318 h->root.u.def.section = s;
2319 h->root.u.def.value = h->plt.offset;
2320 }
2321
2322 /* Make room for this entry. */
2323 s->size += PLT_ENTRY_SIZE;
2324
2325 /* We also need to make an entry in the .got.plt section. */
2326 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2327
2328 /* We also need to make an entry in the .rela.plt section. */
2329 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2330 }
2331 else
2332 {
2333 h->plt.offset = (bfd_vma) -1;
2334 h->needs_plt = 0;
2335 }
2336 }
2337 else
2338 {
2339 h->plt.offset = (bfd_vma) -1;
2340 h->needs_plt = 0;
2341 }
2342
2343 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2344 requiring no TLS entry. */
2345 if (h->got.refcount > 0
2346 && !htab->disable_le_transition
2347 && bfd_link_executable (info)
2348 && h->dynindx == -1
2349 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2350 h->got.offset = (bfd_vma) -1;
2351 else if (h->got.refcount > 0)
2352 {
2353 asection *s;
2354 bfd_boolean dyn;
2355 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2356
2357 /* Make sure this symbol is output as a dynamic symbol.
2358 Undefined weak syms won't yet be marked as dynamic. */
2359 if (h->dynindx == -1
2360 && !h->forced_local)
2361 {
2362 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2363 return FALSE;
2364 }
2365
2366 s = htab->elf.sgot;
2367 h->got.offset = s->size;
2368 s->size += TILEGX_ELF_WORD_BYTES (htab);
2369 /* TLS_GD entries need 2 consecutive GOT slots. */
2370 if (tls_type == GOT_TLS_GD)
2371 s->size += TILEGX_ELF_WORD_BYTES (htab);
2372 dyn = htab->elf.dynamic_sections_created;
2373 /* TLS_IE needs one dynamic relocation,
2374 TLS_GD needs two if local symbol and two if global. */
2375 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2376 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2377 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2378 bfd_link_pic (info),
2379 h))
2380 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2381 }
2382 else
2383 h->got.offset = (bfd_vma) -1;
2384
2385 eh = (struct tilegx_elf_link_hash_entry *) h;
2386 if (eh->dyn_relocs == NULL)
2387 return TRUE;
2388
2389 /* In the shared -Bsymbolic case, discard space allocated for
2390 dynamic pc-relative relocs against symbols which turn out to be
2391 defined in regular objects. For the normal shared case, discard
2392 space for pc-relative relocs that have become local due to symbol
2393 visibility changes. */
2394
2395 if (bfd_link_pic (info))
2396 {
2397 if (SYMBOL_CALLS_LOCAL (info, h))
2398 {
2399 struct tilegx_elf_dyn_relocs **pp;
2400
2401 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2402 {
2403 p->count -= p->pc_count;
2404 p->pc_count = 0;
2405 if (p->count == 0)
2406 *pp = p->next;
2407 else
2408 pp = &p->next;
2409 }
2410 }
2411
2412 /* Also discard relocs on undefined weak syms with non-default
2413 visibility. */
2414 if (eh->dyn_relocs != NULL
2415 && h->root.type == bfd_link_hash_undefweak)
2416 {
2417 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2418 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2419 eh->dyn_relocs = NULL;
2420
2421 /* Make sure undefined weak symbols are output as a dynamic
2422 symbol in PIEs. */
2423 else 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 }
2431 else
2432 {
2433 /* For the non-shared case, discard space for relocs against
2434 symbols which turn out to need copy relocs or are not
2435 dynamic. */
2436
2437 if (!h->non_got_ref
2438 && ((h->def_dynamic
2439 && !h->def_regular)
2440 || (htab->elf.dynamic_sections_created
2441 && (h->root.type == bfd_link_hash_undefweak
2442 || h->root.type == bfd_link_hash_undefined))))
2443 {
2444 /* Make sure this symbol is output as a dynamic symbol.
2445 Undefined weak syms won't yet be marked as dynamic. */
2446 if (h->dynindx == -1
2447 && !h->forced_local)
2448 {
2449 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2450 return FALSE;
2451 }
2452
2453 /* If that succeeded, we know we'll be keeping all the
2454 relocs. */
2455 if (h->dynindx != -1)
2456 goto keep;
2457 }
2458
2459 eh->dyn_relocs = NULL;
2460
2461 keep: ;
2462 }
2463
2464 /* Finally, allocate space. */
2465 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2466 {
2467 asection *sreloc = elf_section_data (p->sec)->sreloc;
2468 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2469 }
2470
2471 return TRUE;
2472 }
2473
2474 /* Find any dynamic relocs that apply to read-only sections. */
2475
2476 static bfd_boolean
2477 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2478 {
2479 struct tilegx_elf_link_hash_entry *eh;
2480 struct tilegx_elf_dyn_relocs *p;
2481
2482 eh = (struct tilegx_elf_link_hash_entry *) h;
2483 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2484 {
2485 asection *s = p->sec->output_section;
2486
2487 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2488 {
2489 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2490
2491 info->flags |= DF_TEXTREL;
2492
2493 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
2494 p->sec->owner, p->sec);
2495
2496 /* Not an error, just cut short the traversal. */
2497 return FALSE;
2498 }
2499 }
2500 return TRUE;
2501 }
2502
2503 /* Return true if the dynamic symbol for a given section should be
2504 omitted when creating a shared library. */
2505
2506 bfd_boolean
2507 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2508 struct bfd_link_info *info,
2509 asection *p)
2510 {
2511 /* We keep the .got section symbol so that explicit relocations
2512 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2513 can be turned into relocations against the .got symbol. */
2514 if (strcmp (p->name, ".got") == 0)
2515 return FALSE;
2516
2517 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2518 }
2519
2520 bfd_boolean
2521 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2522 struct bfd_link_info *info)
2523 {
2524 struct tilegx_elf_link_hash_table *htab;
2525 bfd *dynobj;
2526 asection *s;
2527 bfd *ibfd;
2528
2529 htab = tilegx_elf_hash_table (info);
2530 BFD_ASSERT (htab != NULL);
2531 dynobj = htab->elf.dynobj;
2532 BFD_ASSERT (dynobj != NULL);
2533
2534 if (elf_hash_table (info)->dynamic_sections_created)
2535 {
2536 /* Set the contents of the .interp section to the interpreter. */
2537 if (bfd_link_executable (info) && !info->nointerp)
2538 {
2539 s = bfd_get_linker_section (dynobj, ".interp");
2540 BFD_ASSERT (s != NULL);
2541 s->size = strlen (htab->dynamic_interpreter) + 1;
2542 s->contents = (unsigned char *) htab->dynamic_interpreter;
2543 }
2544 }
2545
2546 /* Set up .got offsets for local syms, and space for local dynamic
2547 relocs. */
2548 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2549 {
2550 bfd_signed_vma *local_got;
2551 bfd_signed_vma *end_local_got;
2552 char *local_tls_type;
2553 bfd_size_type locsymcount;
2554 Elf_Internal_Shdr *symtab_hdr;
2555 asection *srel;
2556
2557 if (! is_tilegx_elf (ibfd))
2558 continue;
2559
2560 for (s = ibfd->sections; s != NULL; s = s->next)
2561 {
2562 struct tilegx_elf_dyn_relocs *p;
2563
2564 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2565 {
2566 if (!bfd_is_abs_section (p->sec)
2567 && bfd_is_abs_section (p->sec->output_section))
2568 {
2569 /* Input section has been discarded, either because
2570 it is a copy of a linkonce section or due to
2571 linker script /DISCARD/, so we'll be discarding
2572 the relocs too. */
2573 }
2574 else if (p->count != 0)
2575 {
2576 srel = elf_section_data (p->sec)->sreloc;
2577 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2578 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2579 {
2580 info->flags |= DF_TEXTREL;
2581
2582 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
2583 p->sec->owner, p->sec);
2584 }
2585 }
2586 }
2587 }
2588
2589 local_got = elf_local_got_refcounts (ibfd);
2590 if (!local_got)
2591 continue;
2592
2593 symtab_hdr = &elf_symtab_hdr (ibfd);
2594 locsymcount = symtab_hdr->sh_info;
2595 end_local_got = local_got + locsymcount;
2596 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2597 s = htab->elf.sgot;
2598 srel = htab->elf.srelgot;
2599 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2600 {
2601 if (*local_got > 0)
2602 {
2603 *local_got = s->size;
2604 s->size += TILEGX_ELF_WORD_BYTES (htab);
2605 if (*local_tls_type == GOT_TLS_GD)
2606 s->size += TILEGX_ELF_WORD_BYTES (htab);
2607 if (bfd_link_pic (info)
2608 || *local_tls_type == GOT_TLS_GD
2609 || *local_tls_type == GOT_TLS_IE)
2610 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2611 }
2612 else
2613 *local_got = (bfd_vma) -1;
2614 }
2615 }
2616
2617 /* Allocate global sym .plt and .got entries, and space for global
2618 sym dynamic relocs. */
2619 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2620
2621 if (elf_hash_table (info)->dynamic_sections_created)
2622 {
2623 /* If the .got section is more than 0x8000 bytes, we add
2624 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2625 bit relocations have a greater chance of working. */
2626 if (htab->elf.sgot->size >= 0x8000
2627 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2628 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2629 }
2630
2631 if (htab->elf.sgotplt)
2632 {
2633 struct elf_link_hash_entry *got;
2634 got = elf_link_hash_lookup (elf_hash_table (info),
2635 "_GLOBAL_OFFSET_TABLE_",
2636 FALSE, FALSE, FALSE);
2637
2638 /* Don't allocate .got.plt section if there are no GOT nor PLT
2639 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2640 if ((got == NULL
2641 || !got->ref_regular_nonweak)
2642 && (htab->elf.sgotplt->size
2643 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2644 && (htab->elf.splt == NULL
2645 || htab->elf.splt->size == 0)
2646 && (htab->elf.sgot == NULL
2647 || (htab->elf.sgot->size
2648 == get_elf_backend_data (output_bfd)->got_header_size)))
2649 htab->elf.sgotplt->size = 0;
2650 }
2651
2652 /* The check_relocs and adjust_dynamic_symbol entry points have
2653 determined the sizes of the various dynamic sections. Allocate
2654 memory for them. */
2655 for (s = dynobj->sections; s != NULL; s = s->next)
2656 {
2657 if ((s->flags & SEC_LINKER_CREATED) == 0)
2658 continue;
2659
2660 if (s == htab->elf.splt
2661 || s == htab->elf.sgot
2662 || s == htab->elf.sgotplt
2663 || s == htab->elf.sdynbss
2664 || s == htab->elf.sdynrelro)
2665 {
2666 /* Strip this section if we don't need it; see the
2667 comment below. */
2668 }
2669 else if (strncmp (s->name, ".rela", 5) == 0)
2670 {
2671 if (s->size != 0)
2672 {
2673 /* We use the reloc_count field as a counter if we need
2674 to copy relocs into the output file. */
2675 s->reloc_count = 0;
2676 }
2677 }
2678 else
2679 {
2680 /* It's not one of our sections. */
2681 continue;
2682 }
2683
2684 if (s->size == 0)
2685 {
2686 /* If we don't need this section, strip it from the
2687 output file. This is mostly to handle .rela.bss and
2688 .rela.plt. We must create both sections in
2689 create_dynamic_sections, because they must be created
2690 before the linker maps input sections to output
2691 sections. The linker does that before
2692 adjust_dynamic_symbol is called, and it is that
2693 function which decides whether anything needs to go
2694 into these sections. */
2695 s->flags |= SEC_EXCLUDE;
2696 continue;
2697 }
2698
2699 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2700 continue;
2701
2702 /* Allocate memory for the section contents. Zero the memory
2703 for the benefit of .rela.plt, which has 4 unused entries
2704 at the beginning, and we don't want garbage. */
2705 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2706 if (s->contents == NULL)
2707 return FALSE;
2708 }
2709
2710 if (elf_hash_table (info)->dynamic_sections_created)
2711 {
2712 /* Add some entries to the .dynamic section. We fill in the
2713 values later, in tilegx_elf_finish_dynamic_sections, but we
2714 must add the entries now so that we get the correct size for
2715 the .dynamic section. The DT_DEBUG entry is filled in by the
2716 dynamic linker and used by the debugger. */
2717 #define add_dynamic_entry(TAG, VAL) \
2718 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2719
2720 if (bfd_link_executable (info))
2721 {
2722 if (!add_dynamic_entry (DT_DEBUG, 0))
2723 return FALSE;
2724 }
2725
2726 if (htab->elf.srelplt->size != 0)
2727 {
2728 if (!add_dynamic_entry (DT_PLTGOT, 0)
2729 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2730 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2731 || !add_dynamic_entry (DT_JMPREL, 0))
2732 return FALSE;
2733 }
2734
2735 if (!add_dynamic_entry (DT_RELA, 0)
2736 || !add_dynamic_entry (DT_RELASZ, 0)
2737 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab)))
2738 return FALSE;
2739
2740 /* If any dynamic relocs apply to a read-only section,
2741 then we need a DT_TEXTREL entry. */
2742 if ((info->flags & DF_TEXTREL) == 0)
2743 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2744
2745 if (info->flags & DF_TEXTREL)
2746 {
2747 if (!add_dynamic_entry (DT_TEXTREL, 0))
2748 return FALSE;
2749 }
2750 }
2751 #undef add_dynamic_entry
2752
2753 return TRUE;
2754 }
2755 \f
2756 /* Return the base VMA address which should be subtracted from real addresses
2757 when resolving @dtpoff relocation.
2758 This is PT_TLS segment p_vaddr. */
2759
2760 static bfd_vma
2761 dtpoff_base (struct bfd_link_info *info)
2762 {
2763 /* If tls_sec is NULL, we should have signalled an error already. */
2764 if (elf_hash_table (info)->tls_sec == NULL)
2765 return 0;
2766 return elf_hash_table (info)->tls_sec->vma;
2767 }
2768
2769 /* Return the relocation value for @tpoff relocation. */
2770
2771 static bfd_vma
2772 tpoff (struct bfd_link_info *info, bfd_vma address)
2773 {
2774 struct elf_link_hash_table *htab = elf_hash_table (info);
2775
2776 /* If tls_sec is NULL, we should have signalled an error already. */
2777 if (htab->tls_sec == NULL)
2778 return 0;
2779
2780 return (address - htab->tls_sec->vma);
2781 }
2782
2783 /* Copy SIZE bits from FROM to TO at address ADDR. */
2784
2785 static void
2786 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2787 {
2788 int i;
2789 for (i = 0; i < size; i++)
2790 {
2791 int from_byte = (from + i) / 8;
2792 int from_bit = (from + i) % 8;
2793 int to_byte = (to + i) / 8;
2794 int to_bit = (to + i) % 8;
2795 bfd_byte to_mask = 1 << to_bit;
2796 addr[to_byte] = (addr[to_byte] & ~to_mask)
2797 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2798 }
2799 }
2800
2801 /* Replace the MASK bits in ADDR with those in INSN, for the next
2802 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2803
2804 static void
2805 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2806 const bfd_byte *insn)
2807 {
2808 int i;
2809 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2810 {
2811 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2812 }
2813 }
2814
2815 /* Mask to extract the bits corresponding to an instruction in a
2816 specific pipe of a bundle. */
2817 static const bfd_byte insn_mask_X1[] = {
2818 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
2819 };
2820
2821 /* Mask to extract the bits corresponding to an instruction in a
2822 specific pipe of a bundle, minus the destination operand and the
2823 first source operand. */
2824 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2825 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2826 };
2827
2828 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2829 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
2830 };
2831
2832 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2833 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2834 };
2835 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2836 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
2837 };
2838
2839 /* Mask to extract the bits corresponding to an instruction in a
2840 specific pipe of a bundle, minus the register operands. */
2841 static const bfd_byte insn_mask_X0_no_operand[] = {
2842 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
2843 };
2844
2845 static const bfd_byte insn_mask_X1_no_operand[] = {
2846 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
2847 };
2848
2849 static const bfd_byte insn_mask_Y0_no_operand[] = {
2850 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
2851 };
2852
2853 static const bfd_byte insn_mask_Y1_no_operand[] = {
2854 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
2855 };
2856
2857 /* Various instructions synthesized to support tls references. */
2858
2859 /* ld r0, r0 in the X1 pipe, used for tls ie. */
2860 static const bfd_byte insn_tls_ie_ld_X1[] = {
2861 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
2862 };
2863
2864 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
2865 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
2866 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
2867 };
2868
2869 /* add r0, r0, tp in various pipes, used for tls ie. */
2870 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2871 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
2872 };
2873 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2874 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
2875 };
2876
2877 /* addx r0, r0, tp in various pipes, used for tls ie. */
2878 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
2879 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
2880 };
2881 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
2882 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
2883 };
2884
2885 /* move r0, r0 in various pipes, used for tls gd. */
2886 static const bfd_byte insn_tls_gd_add_X0X1[] = {
2887 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
2888 };
2889 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
2890 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
2891 };
2892
2893 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
2894 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
2895
2896 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
2897 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
2898
2899 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
2900 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
2901
2902 /* Relocate an TILEGX ELF section.
2903
2904 The RELOCATE_SECTION function is called by the new ELF backend linker
2905 to handle the relocations for a section.
2906
2907 The relocs are always passed as Rela structures.
2908
2909 This function is responsible for adjusting the section contents as
2910 necessary, and (if generating a relocatable output file) adjusting
2911 the reloc addend as necessary.
2912
2913 This function does not have to worry about setting the reloc
2914 address or the reloc symbol index.
2915
2916 LOCAL_SYMS is a pointer to the swapped in local symbols.
2917
2918 LOCAL_SECTIONS is an array giving the section in the input file
2919 corresponding to the st_shndx field of each local symbol.
2920
2921 The global hash table entry for the global symbols can be found
2922 via elf_sym_hashes (input_bfd).
2923
2924 When generating relocatable output, this function must handle
2925 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2926 going to be the section symbol corresponding to the output
2927 section, which means that the addend must be adjusted
2928 accordingly. */
2929
2930 bfd_boolean
2931 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
2932 bfd *input_bfd, asection *input_section,
2933 bfd_byte *contents, Elf_Internal_Rela *relocs,
2934 Elf_Internal_Sym *local_syms,
2935 asection **local_sections)
2936 {
2937 struct tilegx_elf_link_hash_table *htab;
2938 Elf_Internal_Shdr *symtab_hdr;
2939 struct elf_link_hash_entry **sym_hashes;
2940 bfd_vma *local_got_offsets;
2941 bfd_vma got_base;
2942 asection *sreloc;
2943 Elf_Internal_Rela *rel;
2944 Elf_Internal_Rela *relend;
2945 int num_relocs;
2946
2947 htab = tilegx_elf_hash_table (info);
2948 BFD_ASSERT (htab != NULL);
2949 symtab_hdr = &elf_symtab_hdr (input_bfd);
2950 sym_hashes = elf_sym_hashes (input_bfd);
2951 local_got_offsets = elf_local_got_offsets (input_bfd);
2952
2953 if (elf_hash_table (info)->hgot == NULL)
2954 got_base = 0;
2955 else
2956 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2957
2958 sreloc = elf_section_data (input_section)->sreloc;
2959
2960 rel = relocs;
2961 num_relocs = input_section->reloc_count;
2962 relend = relocs + num_relocs;
2963 for (; rel < relend; rel++)
2964 {
2965 int r_type, tls_type;
2966 bfd_boolean is_tls_iele, is_tls_le;
2967 reloc_howto_type *howto;
2968 unsigned long r_symndx;
2969 struct elf_link_hash_entry *h;
2970 Elf_Internal_Sym *sym;
2971 tilegx_create_func create_func;
2972 asection *sec;
2973 bfd_vma relocation;
2974 bfd_reloc_status_type r;
2975 const char *name;
2976 bfd_vma off;
2977 bfd_boolean is_plt = FALSE;
2978 bfd_boolean resolved_to_zero;
2979 bfd_boolean unresolved_reloc;
2980
2981 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2982 if (r_type == R_TILEGX_GNU_VTINHERIT
2983 || r_type == R_TILEGX_GNU_VTENTRY)
2984 continue;
2985
2986 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
2987 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2988
2989 howto = tilegx_elf_howto_table + r_type;
2990
2991 /* This is a final link. */
2992 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2993 h = NULL;
2994 sym = NULL;
2995 sec = NULL;
2996 unresolved_reloc = FALSE;
2997 if (r_symndx < symtab_hdr->sh_info)
2998 {
2999 sym = local_syms + r_symndx;
3000 sec = local_sections[r_symndx];
3001 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3002 }
3003 else
3004 {
3005 bfd_boolean warned ATTRIBUTE_UNUSED;
3006 bfd_boolean ignored ATTRIBUTE_UNUSED;
3007
3008 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3009 r_symndx, symtab_hdr, sym_hashes,
3010 h, sec, relocation,
3011 unresolved_reloc, warned, ignored);
3012 if (warned)
3013 {
3014 /* To avoid generating warning messages about truncated
3015 relocations, set the relocation's address to be the same as
3016 the start of this section. */
3017 if (input_section->output_section != NULL)
3018 relocation = input_section->output_section->vma;
3019 else
3020 relocation = 0;
3021 }
3022 }
3023
3024 if (sec != NULL && discarded_section (sec))
3025 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3026 rel, 1, relend, howto, 0, contents);
3027
3028 if (bfd_link_relocatable (info))
3029 continue;
3030
3031 if (h != NULL)
3032 name = h->root.root.string;
3033 else
3034 {
3035 name = (bfd_elf_string_from_elf_section
3036 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3037 if (name == NULL || *name == '\0')
3038 name = bfd_section_name (input_bfd, sec);
3039 }
3040
3041 switch (r_type)
3042 {
3043 case R_TILEGX_TLS_GD_CALL:
3044 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3045 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3046 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3047 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3048 case R_TILEGX_IMM8_X0_TLS_ADD:
3049 case R_TILEGX_IMM8_Y0_TLS_ADD:
3050 case R_TILEGX_IMM8_X1_TLS_ADD:
3051 case R_TILEGX_IMM8_Y1_TLS_ADD:
3052 tls_type = GOT_UNKNOWN;
3053 if (h == NULL && local_got_offsets)
3054 tls_type =
3055 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3056 else if (h != NULL)
3057 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3058
3059 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE);
3060 is_tls_le = is_tls_iele && (!input_section->sec_flg0
3061 && bfd_link_executable (info)
3062 && (h == NULL || h->dynindx == -1));
3063
3064 if (r_type == R_TILEGX_TLS_GD_CALL)
3065 {
3066 if (is_tls_le)
3067 {
3068 /* GD -> LE */
3069 tilegx_replace_insn (contents + rel->r_offset,
3070 insn_mask_X1, insn_move_X0X1);
3071 continue;
3072 }
3073 else if (is_tls_iele)
3074 {
3075 /* GD -> IE */
3076 if (ABI_64_P (output_bfd))
3077 tilegx_replace_insn (contents + rel->r_offset,
3078 insn_mask_X1, insn_tls_ie_ld_X1);
3079 else
3080 tilegx_replace_insn (contents + rel->r_offset,
3081 insn_mask_X1, insn_tls_ie_ld4s_X1);
3082 continue;
3083 }
3084
3085 /* GD -> GD */
3086 h = (struct elf_link_hash_entry *)
3087 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3088 FALSE, TRUE);
3089 BFD_ASSERT (h != NULL);
3090 r_type = R_TILEGX_JUMPOFF_X1_PLT;
3091 howto = tilegx_elf_howto_table + r_type;
3092 }
3093 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3094 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
3095 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
3096 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
3097 {
3098 bfd_boolean is_pipe0 =
3099 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3100 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
3101 bfd_boolean is_X0X1 =
3102 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3103 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
3104 int dest_begin = is_pipe0 ? 0 : 31;
3105 int src_begin;
3106 const bfd_byte *insn;
3107 const bfd_byte *mask = NULL;
3108
3109 if (is_tls_le)
3110 {
3111 /* 1. copy dest operand into the first source operand.
3112 2. change the opcode to "move". */
3113 src_begin = is_pipe0 ? 6 : 37;
3114 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
3115
3116 switch (r_type)
3117 {
3118 case R_TILEGX_IMM8_X0_TLS_ADD:
3119 mask = insn_mask_X0_no_dest_no_srca;
3120 break;
3121 case R_TILEGX_IMM8_X1_TLS_ADD:
3122 mask = insn_mask_X1_no_dest_no_srca;
3123 break;
3124 case R_TILEGX_IMM8_Y0_TLS_ADD:
3125 mask = insn_mask_Y0_no_dest_no_srca;
3126 break;
3127 case R_TILEGX_IMM8_Y1_TLS_ADD:
3128 mask = insn_mask_Y1_no_dest_no_srca;
3129 break;
3130 }
3131 }
3132 else
3133 {
3134 /* 1. copy dest operand into the second source operand.
3135 2. change the opcode to "add". */
3136 src_begin = is_pipe0 ? 12 : 43;
3137 if (ABI_64_P (output_bfd))
3138 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3139 else
3140 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3141
3142 switch (r_type)
3143 {
3144 case R_TILEGX_IMM8_X0_TLS_ADD:
3145 mask = insn_mask_X0_no_operand;
3146 break;
3147 case R_TILEGX_IMM8_X1_TLS_ADD:
3148 mask = insn_mask_X1_no_operand;
3149 break;
3150 case R_TILEGX_IMM8_Y0_TLS_ADD:
3151 mask = insn_mask_Y0_no_operand;
3152 break;
3153 case R_TILEGX_IMM8_Y1_TLS_ADD:
3154 mask = insn_mask_Y1_no_operand;
3155 break;
3156 }
3157 }
3158
3159 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3160 src_begin, 6);
3161 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3162
3163 continue;
3164 }
3165 else
3166 {
3167 const bfd_byte *mask = NULL;
3168 const bfd_byte *add_insn = NULL;
3169 bfd_boolean is_64bit = ABI_64_P (output_bfd);
3170
3171 switch (r_type)
3172 {
3173 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3174 add_insn = is_tls_iele
3175 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3176 : insn_tls_gd_add_X0X1;
3177 mask = insn_mask_X0_no_dest_no_srca;
3178 break;
3179 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3180 add_insn = is_tls_iele
3181 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3182 : insn_tls_gd_add_X0X1;
3183 mask = insn_mask_X1_no_dest_no_srca;
3184 break;
3185 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3186 add_insn = is_tls_iele
3187 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3188 : insn_tls_gd_add_Y0Y1;
3189 mask = insn_mask_Y0_no_dest_no_srca;
3190 break;
3191 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3192 add_insn = is_tls_iele
3193 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3194 : insn_tls_gd_add_Y0Y1;
3195 mask = insn_mask_Y1_no_dest_no_srca;
3196 break;
3197 }
3198
3199 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3200
3201 continue;
3202 }
3203 break;
3204 case R_TILEGX_TLS_IE_LOAD:
3205 if (!input_section->sec_flg0
3206 && bfd_link_executable (info)
3207 && (h == NULL || h->dynindx == -1))
3208 {
3209 /* IE -> LE */
3210 tilegx_replace_insn (contents + rel->r_offset,
3211 insn_mask_X1_no_dest_no_srca,
3212 insn_move_X0X1);
3213 }
3214 else
3215 {
3216 /* IE -> IE */
3217 if (ABI_64_P (output_bfd))
3218 tilegx_replace_insn (contents + rel->r_offset,
3219 insn_mask_X1_no_dest_no_srca,
3220 insn_tls_ie_ld_X1);
3221 else
3222 tilegx_replace_insn (contents + rel->r_offset,
3223 insn_mask_X1_no_dest_no_srca,
3224 insn_tls_ie_ld4s_X1);
3225 }
3226 continue;
3227 break;
3228 default:
3229 break;
3230 }
3231
3232 resolved_to_zero = (h != NULL
3233 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
3234
3235 switch (r_type)
3236 {
3237 case R_TILEGX_IMM16_X0_HW0_GOT:
3238 case R_TILEGX_IMM16_X1_HW0_GOT:
3239 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3240 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3241 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3242 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3243 /* Relocation is to the entry for this symbol in the global
3244 offset table. */
3245 if (htab->elf.sgot == NULL)
3246 abort ();
3247
3248 if (h != NULL)
3249 {
3250 bfd_boolean dyn;
3251
3252 off = h->got.offset;
3253 BFD_ASSERT (off != (bfd_vma) -1);
3254 dyn = elf_hash_table (info)->dynamic_sections_created;
3255
3256 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3257 bfd_link_pic (info),
3258 h)
3259 || (bfd_link_pic (info)
3260 && SYMBOL_REFERENCES_LOCAL (info, h)))
3261 {
3262 /* This is actually a static link, or it is a
3263 -Bsymbolic link and the symbol is defined
3264 locally, or the symbol was forced to be local
3265 because of a version file. We must initialize
3266 this entry in the global offset table. Since the
3267 offset must always be a multiple
3268 of 8 for 64-bit, we use the least significant bit
3269 to record whether we have initialized it already.
3270
3271 When doing a dynamic link, we create a .rela.got
3272 relocation entry to initialize the value. This
3273 is done in the finish_dynamic_symbol routine. */
3274 if ((off & 1) != 0)
3275 off &= ~1;
3276 else
3277 {
3278 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3279 htab->elf.sgot->contents + off);
3280 h->got.offset |= 1;
3281 }
3282 }
3283 else
3284 unresolved_reloc = FALSE;
3285 }
3286 else
3287 {
3288 BFD_ASSERT (local_got_offsets != NULL
3289 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3290
3291 off = local_got_offsets[r_symndx];
3292
3293 /* The offset must always be a multiple of 8 on 64-bit.
3294 We use the least significant bit to record
3295 whether we have already processed this entry. */
3296 if ((off & 1) != 0)
3297 off &= ~1;
3298 else
3299 {
3300 if (bfd_link_pic (info))
3301 {
3302 asection *s;
3303 Elf_Internal_Rela outrel;
3304
3305 /* We need to generate a R_TILEGX_RELATIVE reloc
3306 for the dynamic linker. */
3307 s = htab->elf.srelgot;
3308 BFD_ASSERT (s != NULL);
3309
3310 outrel.r_offset = (htab->elf.sgot->output_section->vma
3311 + htab->elf.sgot->output_offset
3312 + off);
3313 outrel.r_info =
3314 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3315 outrel.r_addend = relocation;
3316 relocation = 0;
3317 tilegx_elf_append_rela (output_bfd, s, &outrel);
3318 }
3319
3320 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3321 htab->elf.sgot->contents + off);
3322 local_got_offsets[r_symndx] |= 1;
3323 }
3324 }
3325 relocation = off - got_base;
3326 break;
3327
3328 case R_TILEGX_JUMPOFF_X1_PLT:
3329 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
3330 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
3331 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
3332 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
3333 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
3334 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
3335 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
3336 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
3337 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
3338 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
3339 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
3340 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
3341 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
3342 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
3343 /* Relocation is to the entry for this symbol in the
3344 procedure linkage table. */
3345 BFD_ASSERT (h != NULL);
3346
3347 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3348 {
3349 /* We didn't make a PLT entry for this symbol. This
3350 happens when statically linking PIC code, or when
3351 using -Bsymbolic. */
3352 break;
3353 }
3354
3355 relocation = (htab->elf.splt->output_section->vma
3356 + htab->elf.splt->output_offset
3357 + h->plt.offset);
3358 unresolved_reloc = FALSE;
3359 break;
3360
3361 case R_TILEGX_64_PCREL:
3362 case R_TILEGX_32_PCREL:
3363 case R_TILEGX_16_PCREL:
3364 case R_TILEGX_8_PCREL:
3365 case R_TILEGX_IMM16_X0_HW0_PCREL:
3366 case R_TILEGX_IMM16_X1_HW0_PCREL:
3367 case R_TILEGX_IMM16_X0_HW1_PCREL:
3368 case R_TILEGX_IMM16_X1_HW1_PCREL:
3369 case R_TILEGX_IMM16_X0_HW2_PCREL:
3370 case R_TILEGX_IMM16_X1_HW2_PCREL:
3371 case R_TILEGX_IMM16_X0_HW3_PCREL:
3372 case R_TILEGX_IMM16_X1_HW3_PCREL:
3373 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3374 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3375 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3376 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3377 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3378 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3379 if (h != NULL
3380 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3381 break;
3382 /* Fall through. */
3383 case R_TILEGX_64:
3384 case R_TILEGX_32:
3385 case R_TILEGX_16:
3386 case R_TILEGX_8:
3387 case R_TILEGX_HW0:
3388 case R_TILEGX_HW1:
3389 case R_TILEGX_HW2:
3390 case R_TILEGX_HW3:
3391 case R_TILEGX_HW0_LAST:
3392 case R_TILEGX_HW1_LAST:
3393 case R_TILEGX_HW2_LAST:
3394 case R_TILEGX_COPY:
3395 case R_TILEGX_GLOB_DAT:
3396 case R_TILEGX_JMP_SLOT:
3397 case R_TILEGX_RELATIVE:
3398 case R_TILEGX_BROFF_X1:
3399 case R_TILEGX_JUMPOFF_X1:
3400 case R_TILEGX_IMM8_X0:
3401 case R_TILEGX_IMM8_Y0:
3402 case R_TILEGX_IMM8_X1:
3403 case R_TILEGX_IMM8_Y1:
3404 case R_TILEGX_DEST_IMM8_X1:
3405 case R_TILEGX_MT_IMM14_X1:
3406 case R_TILEGX_MF_IMM14_X1:
3407 case R_TILEGX_MMSTART_X0:
3408 case R_TILEGX_MMEND_X0:
3409 case R_TILEGX_SHAMT_X0:
3410 case R_TILEGX_SHAMT_X1:
3411 case R_TILEGX_SHAMT_Y0:
3412 case R_TILEGX_SHAMT_Y1:
3413 case R_TILEGX_IMM16_X0_HW0:
3414 case R_TILEGX_IMM16_X1_HW0:
3415 case R_TILEGX_IMM16_X0_HW1:
3416 case R_TILEGX_IMM16_X1_HW1:
3417 case R_TILEGX_IMM16_X0_HW2:
3418 case R_TILEGX_IMM16_X1_HW2:
3419 case R_TILEGX_IMM16_X0_HW3:
3420 case R_TILEGX_IMM16_X1_HW3:
3421 case R_TILEGX_IMM16_X0_HW0_LAST:
3422 case R_TILEGX_IMM16_X1_HW0_LAST:
3423 case R_TILEGX_IMM16_X0_HW1_LAST:
3424 case R_TILEGX_IMM16_X1_HW1_LAST:
3425 case R_TILEGX_IMM16_X0_HW2_LAST:
3426 case R_TILEGX_IMM16_X1_HW2_LAST:
3427 if ((input_section->flags & SEC_ALLOC) == 0)
3428 break;
3429
3430 if ((bfd_link_pic (info)
3431 && (h == NULL
3432 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3433 && !resolved_to_zero)
3434 || h->root.type != bfd_link_hash_undefweak)
3435 && (! howto->pc_relative
3436 || !SYMBOL_CALLS_LOCAL (info, h)))
3437 || (!bfd_link_pic (info)
3438 && h != NULL
3439 && h->dynindx != -1
3440 && !h->non_got_ref
3441 && ((h->def_dynamic
3442 && !h->def_regular)
3443 || h->root.type == bfd_link_hash_undefweak
3444 || h->root.type == bfd_link_hash_undefined)))
3445 {
3446 Elf_Internal_Rela outrel;
3447 bfd_boolean skip, relocate = FALSE;
3448
3449 /* When generating a shared object, these relocations
3450 are copied into the output file to be resolved at run
3451 time. */
3452
3453 BFD_ASSERT (sreloc != NULL);
3454
3455 skip = FALSE;
3456
3457 outrel.r_offset =
3458 _bfd_elf_section_offset (output_bfd, info, input_section,
3459 rel->r_offset);
3460 if (outrel.r_offset == (bfd_vma) -1)
3461 skip = TRUE;
3462 else if (outrel.r_offset == (bfd_vma) -2)
3463 skip = TRUE, relocate = TRUE;
3464 outrel.r_offset += (input_section->output_section->vma
3465 + input_section->output_offset);
3466
3467 switch (r_type)
3468 {
3469 case R_TILEGX_64_PCREL:
3470 case R_TILEGX_32_PCREL:
3471 case R_TILEGX_16_PCREL:
3472 case R_TILEGX_8_PCREL:
3473 /* If the symbol is not dynamic, we should not keep
3474 a dynamic relocation. But an .rela.* slot has been
3475 allocated for it, output R_TILEGX_NONE.
3476 FIXME: Add code tracking needed dynamic relocs as
3477 e.g. i386 has. */
3478 if (h->dynindx == -1)
3479 skip = TRUE, relocate = TRUE;
3480 break;
3481 }
3482
3483 if (skip)
3484 memset (&outrel, 0, sizeof outrel);
3485 /* h->dynindx may be -1 if the symbol was marked to
3486 become local. */
3487 else if (h != NULL &&
3488 h->dynindx != -1
3489 && (! is_plt
3490 || !bfd_link_pic (info)
3491 || !SYMBOLIC_BIND (info, h)
3492 || !h->def_regular))
3493 {
3494 BFD_ASSERT (h->dynindx != -1);
3495 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3496 outrel.r_addend = rel->r_addend;
3497 }
3498 else
3499 {
3500 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3501 {
3502 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3503 R_TILEGX_RELATIVE);
3504 outrel.r_addend = relocation + rel->r_addend;
3505 }
3506 else
3507 {
3508 long indx;
3509
3510 outrel.r_addend = relocation + rel->r_addend;
3511
3512 if (is_plt)
3513 sec = htab->elf.splt;
3514
3515 if (bfd_is_abs_section (sec))
3516 indx = 0;
3517 else if (sec == NULL || sec->owner == NULL)
3518 {
3519 bfd_set_error (bfd_error_bad_value);
3520 return FALSE;
3521 }
3522 else
3523 {
3524 asection *osec;
3525
3526 /* We are turning this relocation into one
3527 against a section symbol. It would be
3528 proper to subtract the symbol's value,
3529 osec->vma, from the emitted reloc addend,
3530 but ld.so expects buggy relocs. */
3531 osec = sec->output_section;
3532 indx = elf_section_data (osec)->dynindx;
3533
3534 if (indx == 0)
3535 {
3536 osec = htab->elf.text_index_section;
3537 indx = elf_section_data (osec)->dynindx;
3538 }
3539
3540 /* FIXME: we really should be able to link non-pic
3541 shared libraries. */
3542 if (indx == 0)
3543 {
3544 BFD_FAIL ();
3545 _bfd_error_handler
3546 (_("%B: probably compiled without -fPIC?"),
3547 input_bfd);
3548 bfd_set_error (bfd_error_bad_value);
3549 return FALSE;
3550 }
3551 }
3552
3553 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3554 r_type);
3555 }
3556 }
3557
3558 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3559
3560 /* This reloc will be computed at runtime, so there's no
3561 need to do anything now. */
3562 if (! relocate)
3563 continue;
3564 }
3565 break;
3566
3567 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3568 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3569 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3570 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3571 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3572 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3573 if (!bfd_link_executable (info))
3574 {
3575 Elf_Internal_Rela outrel;
3576 bfd_boolean skip;
3577
3578 BFD_ASSERT (sreloc != NULL);
3579 skip = FALSE;
3580 outrel.r_offset =
3581 _bfd_elf_section_offset (output_bfd, info, input_section,
3582 rel->r_offset);
3583 if (outrel.r_offset == (bfd_vma) -1)
3584 skip = TRUE;
3585 else if (outrel.r_offset == (bfd_vma) -2)
3586 skip = TRUE;
3587 outrel.r_offset += (input_section->output_section->vma
3588 + input_section->output_offset);
3589 if (skip)
3590 memset (&outrel, 0, sizeof outrel);
3591 else
3592 {
3593 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3594 outrel.r_addend = relocation - dtpoff_base (info)
3595 + rel->r_addend;
3596 }
3597
3598 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3599 continue;
3600 }
3601 relocation = tpoff (info, relocation);
3602 break;
3603
3604 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3605 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3606 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3607 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3608 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3609 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3610 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3611 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3612 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3613 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3614 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3615 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3616 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3617 input_section->sec_flg0);
3618 tls_type = GOT_UNKNOWN;
3619 if (h == NULL && local_got_offsets)
3620 tls_type =
3621 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3622 else if (h != NULL)
3623 {
3624 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3625 if (bfd_link_executable (info)
3626 && h->dynindx == -1
3627 && tls_type == GOT_TLS_IE)
3628 r_type = (!input_section->sec_flg0
3629 ? tilegx_tls_translate_to_le (r_type)
3630 : tilegx_tls_translate_to_ie (r_type));
3631 }
3632
3633 if (tls_type == GOT_TLS_IE)
3634 r_type = tilegx_tls_translate_to_ie (r_type);
3635
3636 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3637 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3638 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3639 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3640 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3641 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3642 {
3643 relocation = tpoff (info, relocation);
3644 break;
3645 }
3646
3647 if (h != NULL)
3648 {
3649 off = h->got.offset;
3650 h->got.offset |= 1;
3651 }
3652 else
3653 {
3654 BFD_ASSERT (local_got_offsets != NULL);
3655 off = local_got_offsets[r_symndx];
3656 local_got_offsets[r_symndx] |= 1;
3657 }
3658
3659 if (htab->elf.sgot == NULL)
3660 abort ();
3661
3662 if ((off & 1) != 0)
3663 off &= ~1;
3664 else
3665 {
3666 Elf_Internal_Rela outrel;
3667 int indx = 0;
3668 bfd_boolean need_relocs = FALSE;
3669
3670 if (htab->elf.srelgot == NULL)
3671 abort ();
3672
3673 if (h != NULL)
3674 {
3675 bfd_boolean dyn;
3676 dyn = htab->elf.dynamic_sections_created;
3677
3678 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3679 bfd_link_pic (info),
3680 h)
3681 && (!bfd_link_pic (info)
3682 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3683 {
3684 indx = h->dynindx;
3685 }
3686 }
3687
3688 /* The GOT entries have not been initialized yet. Do it
3689 now, and emit any relocations. */
3690 if ((bfd_link_pic (info) || indx != 0)
3691 && (h == NULL
3692 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3693 || h->root.type != bfd_link_hash_undefweak))
3694 need_relocs = TRUE;
3695
3696 switch (r_type)
3697 {
3698 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3699 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3700 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3701 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3702 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3703 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3704 if (need_relocs) {
3705 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3706 htab->elf.sgot->contents + off);
3707 outrel.r_offset = (htab->elf.sgot->output_section->vma
3708 + htab->elf.sgot->output_offset + off);
3709 outrel.r_addend = 0;
3710 if (indx == 0)
3711 outrel.r_addend = relocation - dtpoff_base (info);
3712 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3713 TILEGX_ELF_TPOFF_RELOC (htab));
3714 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3715 } else {
3716 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3717 tpoff (info, relocation),
3718 htab->elf.sgot->contents + off);
3719 }
3720 break;
3721
3722 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3723 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3724 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3725 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3726 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3727 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3728 if (need_relocs) {
3729 outrel.r_offset = (htab->elf.sgot->output_section->vma
3730 + htab->elf.sgot->output_offset + off);
3731 outrel.r_addend = 0;
3732 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3733 TILEGX_ELF_DTPMOD_RELOC (htab));
3734 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3735 htab->elf.sgot->contents + off);
3736 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3737 if (indx == 0)
3738 {
3739 BFD_ASSERT (! unresolved_reloc);
3740 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3741 relocation - dtpoff_base (info),
3742 (htab->elf.sgot->contents + off +
3743 TILEGX_ELF_WORD_BYTES (htab)));
3744 }
3745 else
3746 {
3747 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3748 (htab->elf.sgot->contents + off +
3749 TILEGX_ELF_WORD_BYTES (htab)));
3750 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3751 TILEGX_ELF_DTPOFF_RELOC (htab));
3752 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3753 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3754 }
3755 }
3756
3757 else {
3758 /* If we are not emitting relocations for a
3759 general dynamic reference, then we must be in a
3760 static link or an executable link with the
3761 symbol binding locally. Mark it as belonging
3762 to module 1, the executable. */
3763 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3764 htab->elf.sgot->contents + off );
3765 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3766 relocation - dtpoff_base (info),
3767 htab->elf.sgot->contents + off +
3768 TILEGX_ELF_WORD_BYTES (htab));
3769 }
3770 break;
3771 }
3772 }
3773
3774 if (off >= (bfd_vma) -2)
3775 abort ();
3776
3777 relocation = off - got_base;
3778 unresolved_reloc = FALSE;
3779 howto = tilegx_elf_howto_table + r_type;
3780 break;
3781
3782 default:
3783 break;
3784 }
3785
3786 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3787 because such sections are not SEC_ALLOC and thus ld.so will
3788 not process them. */
3789 if (unresolved_reloc
3790 && !((input_section->flags & SEC_DEBUGGING) != 0
3791 && h->def_dynamic)
3792 && _bfd_elf_section_offset (output_bfd, info, input_section,
3793 rel->r_offset) != (bfd_vma) -1)
3794 _bfd_error_handler
3795 /* xgettext:c-format */
3796 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3797 input_bfd,
3798 input_section,
3799 rel->r_offset,
3800 howto->name,
3801 h->root.root.string);
3802
3803 r = bfd_reloc_continue;
3804
3805 /* Get the operand creation function, if any. */
3806 create_func = reloc_to_create_func[r_type];
3807 if (create_func == NULL)
3808 {
3809 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3810 contents, rel->r_offset,
3811 relocation, rel->r_addend);
3812 }
3813 else
3814 {
3815 if (howto->pc_relative)
3816 {
3817 relocation -=
3818 input_section->output_section->vma + input_section->output_offset;
3819 if (howto->pcrel_offset)
3820 relocation -= rel->r_offset;
3821 }
3822
3823 bfd_byte *data;
3824
3825 /* Add the relocation addend if any to the final target value */
3826 relocation += rel->r_addend;
3827
3828 /* Do basic range checking */
3829 r = bfd_check_overflow (howto->complain_on_overflow,
3830 howto->bitsize,
3831 howto->rightshift,
3832 TILEGX_ELF_WORD_BYTES (htab) * 8,
3833 relocation);
3834
3835 /*
3836 * Write the relocated value out into the raw section data.
3837 * Don't put a relocation out in the .rela section.
3838 */
3839 tilegx_bundle_bits mask = create_func(-1);
3840 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
3841
3842 /* Only touch bytes while the mask is not 0, so we
3843 don't write to out of bounds memory if this is actually
3844 a 16-bit switch instruction. */
3845 for (data = contents + rel->r_offset; mask != 0; data++)
3846 {
3847 bfd_byte byte_mask = (bfd_byte)mask;
3848 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3849 mask >>= 8;
3850 value >>= 8;
3851 }
3852 }
3853
3854 if (r != bfd_reloc_ok)
3855 {
3856 const char *msg = NULL;
3857
3858 switch (r)
3859 {
3860 case bfd_reloc_overflow:
3861 (*info->callbacks->reloc_overflow)
3862 (info, (h ? &h->root : NULL), name, howto->name,
3863 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3864 break;
3865
3866 case bfd_reloc_undefined:
3867 (*info->callbacks->undefined_symbol)
3868 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
3869 break;
3870
3871 case bfd_reloc_outofrange:
3872 msg = _("internal error: out of range error");
3873 break;
3874
3875 case bfd_reloc_notsupported:
3876 msg = _("internal error: unsupported relocation error");
3877 break;
3878
3879 case bfd_reloc_dangerous:
3880 msg = _("internal error: dangerous relocation");
3881 break;
3882
3883 default:
3884 msg = _("internal error: unknown error");
3885 break;
3886 }
3887
3888 if (msg)
3889 (*info->callbacks->warning) (info, msg, name, input_bfd,
3890 input_section, rel->r_offset);
3891 }
3892 }
3893
3894 return TRUE;
3895 }
3896
3897 /* Finish up dynamic symbol handling. We set the contents of various
3898 dynamic sections here. */
3899
3900 bfd_boolean
3901 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
3902 struct bfd_link_info *info,
3903 struct elf_link_hash_entry *h,
3904 Elf_Internal_Sym *sym)
3905 {
3906 struct tilegx_elf_link_hash_table *htab;
3907
3908 htab = tilegx_elf_hash_table (info);
3909 BFD_ASSERT (htab != NULL);
3910
3911 if (h->plt.offset != (bfd_vma) -1)
3912 {
3913 asection *splt;
3914 asection *srela;
3915 asection *sgotplt;
3916 Elf_Internal_Rela rela;
3917 bfd_byte *loc;
3918 bfd_vma r_offset;
3919 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
3920
3921
3922 int rela_index;
3923
3924 /* This symbol has an entry in the PLT. Set it up. */
3925
3926 BFD_ASSERT (h->dynindx != -1);
3927
3928 splt = htab->elf.splt;
3929 srela = htab->elf.srelplt;
3930 sgotplt = htab->elf.sgotplt;
3931
3932 if (splt == NULL || srela == NULL)
3933 abort ();
3934
3935 /* Fill in the entry in the procedure linkage table. */
3936 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
3937 h->plt.offset, &r_offset);
3938
3939 /* Fill in the entry in the global offset table, which initially points
3940 to the beginning of the plt. */
3941 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3942 splt->output_section->vma + splt->output_offset,
3943 sgotplt->contents + r_offset);
3944
3945 /* Fill in the entry in the .rela.plt section. */
3946 rela.r_offset = (sgotplt->output_section->vma
3947 + sgotplt->output_offset
3948 + r_offset);
3949 rela.r_addend = 0;
3950 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
3951
3952 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
3953 bed->s->swap_reloca_out (output_bfd, &rela, loc);
3954
3955 if (!h->def_regular)
3956 {
3957 /* Mark the symbol as undefined, rather than as defined in
3958 the .plt section. Leave the value alone. */
3959 sym->st_shndx = SHN_UNDEF;
3960 /* If the symbol is weak, we do need to clear the value.
3961 Otherwise, the PLT entry would provide a definition for
3962 the symbol even if the symbol wasn't defined anywhere,
3963 and so the symbol would never be NULL. */
3964 if (!h->ref_regular_nonweak)
3965 sym->st_value = 0;
3966 }
3967 }
3968
3969 if (h->got.offset != (bfd_vma) -1
3970 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3971 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3972 {
3973 asection *sgot;
3974 asection *srela;
3975 Elf_Internal_Rela rela;
3976
3977 /* This symbol has an entry in the GOT. Set it up. */
3978
3979 sgot = htab->elf.sgot;
3980 srela = htab->elf.srelgot;
3981 BFD_ASSERT (sgot != NULL && srela != NULL);
3982
3983 rela.r_offset = (sgot->output_section->vma
3984 + sgot->output_offset
3985 + (h->got.offset &~ (bfd_vma) 1));
3986
3987 /* If this is a -Bsymbolic link, and the symbol is defined
3988 locally, we just want to emit a RELATIVE reloc. Likewise if
3989 the symbol was forced to be local because of a version file.
3990 The entry in the global offset table will already have been
3991 initialized in the relocate_section function. */
3992 if (bfd_link_pic (info)
3993 && (info->symbolic || h->dynindx == -1)
3994 && h->def_regular)
3995 {
3996 asection *sec = h->root.u.def.section;
3997 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3998 rela.r_addend = (h->root.u.def.value
3999 + sec->output_section->vma
4000 + sec->output_offset);
4001 }
4002 else
4003 {
4004 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
4005 rela.r_addend = 0;
4006 }
4007
4008 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
4009 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4010 tilegx_elf_append_rela (output_bfd, srela, &rela);
4011 }
4012
4013 if (h->needs_copy)
4014 {
4015 asection *s;
4016 Elf_Internal_Rela rela;
4017
4018 /* This symbols needs a copy reloc. Set it up. */
4019 BFD_ASSERT (h->dynindx != -1);
4020
4021 if (h->root.u.def.section == htab->elf.sdynrelro)
4022 s = htab->elf.sreldynrelro;
4023 else
4024 s = htab->elf.srelbss;
4025 BFD_ASSERT (s != NULL);
4026
4027 rela.r_offset = (h->root.u.def.value
4028 + h->root.u.def.section->output_section->vma
4029 + h->root.u.def.section->output_offset);
4030 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
4031 rela.r_addend = 0;
4032 tilegx_elf_append_rela (output_bfd, s, &rela);
4033 }
4034
4035 /* Mark some specially defined symbols as absolute. */
4036 if (h == htab->elf.hdynamic
4037 || (h == htab->elf.hgot || h == htab->elf.hplt))
4038 sym->st_shndx = SHN_ABS;
4039
4040 return TRUE;
4041 }
4042
4043 /* Finish up the dynamic sections. */
4044
4045 static bfd_boolean
4046 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4047 bfd *dynobj, asection *sdyn,
4048 asection *splt ATTRIBUTE_UNUSED)
4049 {
4050 struct tilegx_elf_link_hash_table *htab;
4051 const struct elf_backend_data *bed;
4052 bfd_byte *dyncon, *dynconend;
4053 size_t dynsize;
4054
4055 htab = tilegx_elf_hash_table (info);
4056 BFD_ASSERT (htab != NULL);
4057 bed = get_elf_backend_data (output_bfd);
4058 dynsize = bed->s->sizeof_dyn;
4059 dynconend = sdyn->contents + sdyn->size;
4060
4061 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4062 {
4063 Elf_Internal_Dyn dyn;
4064 asection *s;
4065
4066 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4067
4068 switch (dyn.d_tag)
4069 {
4070 case DT_PLTGOT:
4071 s = htab->elf.sgotplt;
4072 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4073 break;
4074 case DT_JMPREL:
4075 s = htab->elf.srelplt;
4076 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4077 break;
4078 case DT_PLTRELSZ:
4079 s = htab->elf.srelplt;
4080 dyn.d_un.d_val = s->size;
4081 break;
4082 default:
4083 continue;
4084 }
4085
4086 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4087 }
4088 return TRUE;
4089 }
4090
4091 bfd_boolean
4092 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
4093 struct bfd_link_info *info)
4094 {
4095 bfd *dynobj;
4096 asection *sdyn;
4097 struct tilegx_elf_link_hash_table *htab;
4098 size_t pad_size;
4099
4100 htab = tilegx_elf_hash_table (info);
4101 BFD_ASSERT (htab != NULL);
4102 dynobj = htab->elf.dynobj;
4103
4104 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4105
4106 if (elf_hash_table (info)->dynamic_sections_created)
4107 {
4108 asection *splt;
4109 bfd_boolean ret;
4110
4111 splt = htab->elf.splt;
4112 BFD_ASSERT (splt != NULL && sdyn != NULL);
4113
4114 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
4115
4116 if (!ret)
4117 return ret;
4118
4119 /* Fill in the head and tail entries in the procedure linkage table. */
4120 if (splt->size > 0)
4121 {
4122 memcpy (splt->contents,
4123 ABI_64_P (output_bfd) ?
4124 tilegx64_plt0_entry : tilegx32_plt0_entry,
4125 PLT_HEADER_SIZE);
4126
4127 memcpy (splt->contents + splt->size
4128 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE,
4129 ABI_64_P (output_bfd) ?
4130 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4131 PLT_TAIL_SIZE);
4132 /* Add padding so that the plt section is a multiple of its
4133 entry size. */
4134 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE;
4135 memset (splt->contents + splt->size - pad_size, 0, pad_size);
4136
4137 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4138 = PLT_ENTRY_SIZE;
4139 }
4140 }
4141
4142 if (htab->elf.sgotplt)
4143 {
4144 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4145 {
4146 _bfd_error_handler
4147 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4148 return FALSE;
4149 }
4150
4151 if (htab->elf.sgotplt->size > 0)
4152 {
4153 /* Write the first two entries in .got.plt, needed for the dynamic
4154 linker. */
4155 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4156 htab->elf.sgotplt->contents);
4157 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4158 htab->elf.sgotplt->contents
4159 + GOT_ENTRY_SIZE (htab));
4160
4161 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4162 GOT_ENTRY_SIZE (htab);
4163 }
4164 }
4165
4166 if (htab->elf.sgot)
4167 {
4168 if (htab->elf.sgot->size > 0)
4169 {
4170 /* Set the first entry in the global offset table to the address of
4171 the dynamic section. */
4172 bfd_vma val = (sdyn ?
4173 sdyn->output_section->vma + sdyn->output_offset :
4174 0);
4175 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4176 htab->elf.sgot->contents);
4177
4178 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4179 GOT_ENTRY_SIZE (htab);
4180 }
4181 }
4182
4183 return TRUE;
4184 }
4185
4186 \f
4187
4188 /* Return address for Ith PLT stub in section PLT, for relocation REL
4189 or (bfd_vma) -1 if it should not be included. */
4190
4191 bfd_vma
4192 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4193 const arelent *rel ATTRIBUTE_UNUSED)
4194 {
4195 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4196 }
4197
4198 enum elf_reloc_type_class
4199 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4200 const asection *rel_sec ATTRIBUTE_UNUSED,
4201 const Elf_Internal_Rela *rela)
4202 {
4203 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4204 {
4205 case R_TILEGX_RELATIVE:
4206 return reloc_class_relative;
4207 case R_TILEGX_JMP_SLOT:
4208 return reloc_class_plt;
4209 case R_TILEGX_COPY:
4210 return reloc_class_copy;
4211 default:
4212 return reloc_class_normal;
4213 }
4214 }
4215
4216 int
4217 tilegx_additional_program_headers (bfd *abfd,
4218 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4219 {
4220 /* Each .intrpt section specified by the user adds another PT_LOAD
4221 header since the sections are discontiguous. */
4222 static const char intrpt_sections[4][9] =
4223 {
4224 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4225 };
4226 int count = 0;
4227 int i;
4228
4229 for (i = 0; i < 4; i++)
4230 {
4231 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4232 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4233 ++count;
4234 }
4235
4236 /* Add four "padding" headers in to leave room in case a custom linker
4237 script does something fancy. Otherwise ld complains that it ran
4238 out of program headers and refuses to link. */
4239 count += 4;
4240
4241 return count;
4242 }
4243
4244
4245 bfd_boolean
4246 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4247 {
4248 bfd *obfd = info->output_bfd;
4249 const char *targ1 = bfd_get_target (ibfd);
4250 const char *targ2 = bfd_get_target (obfd);
4251
4252 if (strcmp (targ1, targ2) != 0)
4253 {
4254 _bfd_error_handler
4255 /* xgettext:c-format */
4256 (_("%B: Cannot link together %s and %s objects."),
4257 ibfd, targ1, targ2);
4258 bfd_set_error (bfd_error_bad_value);
4259 return FALSE;
4260 }
4261
4262 return TRUE;
4263 }
GDB Binutils - Deliverables
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