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[thirdparty/binutils-gdb.git] / bfd / elfxx-tilegx.c
1 /* TILE-Gx-specific support for ELF.
2 Copyright (C) 2011-2016 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 /* Short-cuts to get to dynamic linker sections. */
859 asection *sdynbss;
860 asection *srelbss;
861
862 /* Whether LE transition has been disabled for some of the
863 sections. */
864 bfd_boolean disable_le_transition;
865
866 /* Small local sym to section mapping cache. */
867 struct sym_cache sym_cache;
868 };
869
870
871 /* Get the Tile ELF linker hash table from a link_info structure. */
872 #define tilegx_elf_hash_table(p) \
873 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
874 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL)
875
876 #ifdef BFD64
877 static bfd_vma
878 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
879 bfd_vma rel_index,
880 bfd_vma type)
881 {
882 return ELF64_R_INFO (rel_index, type);
883 }
884
885 static bfd_vma
886 tilegx_elf_r_symndx_64 (bfd_vma r_info)
887 {
888 return ELF64_R_SYM (r_info);
889 }
890
891 static void
892 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
893 {
894 bfd_put_64 (abfd, val, ptr);
895 }
896 #endif /* BFD64 */
897
898 static bfd_vma
899 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
900 bfd_vma rel_index,
901 bfd_vma type)
902 {
903 return ELF32_R_INFO (rel_index, type);
904 }
905
906 static bfd_vma
907 tilegx_elf_r_symndx_32 (bfd_vma r_info)
908 {
909 return ELF32_R_SYM (r_info);
910 }
911
912 static void
913 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
914 {
915 bfd_put_32 (abfd, val, ptr);
916 }
917
918 reloc_howto_type *
919 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
920 bfd_reloc_code_real_type code)
921 {
922 unsigned int i;
923
924 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;)
925 {
926 const reloc_map * entry;
927
928 entry = tilegx_reloc_map + i;
929
930 if (entry->bfd_reloc_val == code)
931 return entry->table + (entry->tilegx_reloc_val
932 - entry->table[0].type);
933 }
934
935 return NULL;
936 }
937
938 reloc_howto_type *
939 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
940 const char *r_name)
941 {
942 unsigned int i;
943
944 for (i = 0;
945 i < (sizeof (tilegx_elf_howto_table)
946 / sizeof (tilegx_elf_howto_table[0]));
947 i++)
948 if (tilegx_elf_howto_table[i].name != NULL
949 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
950 return &tilegx_elf_howto_table[i];
951
952 return NULL;
953 }
954
955 void
956 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
957 arelent *cache_ptr,
958 Elf_Internal_Rela *dst)
959 {
960 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
961
962 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
963 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
964 else if (r_type - R_TILEGX_GNU_VTINHERIT
965 <= (unsigned int) R_TILEGX_GNU_VTENTRY)
966 cache_ptr->howto
967 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
968 else
969 abort ();
970 }
971
972 typedef tilegx_bundle_bits (*tilegx_create_func)(int);
973
974 static const tilegx_create_func reloc_to_create_func[] =
975 {
976 /* The first twenty relocation types don't correspond to operands */
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 NULL,
994 NULL,
995 NULL,
996 NULL,
997
998 /* The remaining relocations are used for immediate operands */
999 create_BrOff_X1,
1000 create_JumpOff_X1,
1001 create_JumpOff_X1,
1002 create_Imm8_X0,
1003 create_Imm8_Y0,
1004 create_Imm8_X1,
1005 create_Imm8_Y1,
1006 create_Dest_Imm8_X1,
1007 create_MT_Imm14_X1,
1008 create_MF_Imm14_X1,
1009 create_BFStart_X0,
1010 create_BFEnd_X0,
1011 create_ShAmt_X0,
1012 create_ShAmt_X1,
1013 create_ShAmt_Y0,
1014 create_ShAmt_Y1,
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 create_Imm16_X0,
1066 create_Imm16_X1,
1067 create_Imm16_X0,
1068 create_Imm16_X1,
1069 NULL,
1070 NULL,
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 create_Imm16_X0,
1080 create_Imm16_X1,
1081 create_Imm16_X0,
1082 create_Imm16_X1,
1083 };
1084
1085 static void
1086 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
1087 {
1088 const struct elf_backend_data *bed;
1089 bfd_byte *loc;
1090
1091 bed = get_elf_backend_data (abfd);
1092 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
1093 bed->s->swap_reloca_out (abfd, rel, loc);
1094 }
1095
1096 /* PLT/GOT stuff */
1097
1098 /* The procedure linkage table starts with the following header:
1099
1100 ld_add r28, r27, 8
1101 ld r27, r27
1102 {
1103 jr r27
1104 info 10 ## SP not offset, return PC in LR
1105 }
1106
1107 Subsequent entries are the following, jumping to the header at the end:
1108
1109 {
1110 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET>
1111 lnk r26
1112 }
1113 1:
1114 {
1115 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1116 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1117 }
1118 {
1119 add r28, r26, r28
1120 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1121 }
1122 {
1123 add r27, r26, r27
1124 ld r28, r28
1125 info 10 ## SP not offset, return PC in LR
1126 }
1127 {
1128 shl16insli r29, zero, MY_PLT_INDEX
1129 jr r28
1130 }
1131
1132 This code sequence lets the code at at the start of the PLT determine
1133 which PLT entry was executed by examining 'r29'.
1134
1135 Note that MY_PLT_INDEX skips over the header entries, so the first
1136 actual jump table entry has index zero.
1137
1138 If the offset fits in 16 bits,
1139
1140 lnk r26
1141 1:
1142 {
1143 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1144 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1145 }
1146 {
1147 shl16insli r29, zero, MY_PLT_INDEX
1148 ld r28, r28
1149 }
1150 {
1151 add r27, r26, r27
1152 jr r28
1153 }
1154 info 10 ## SP not offset, return PC in LR
1155
1156 For the purpose of backtracing, the procedure linkage table ends with the
1157 following tail entry:
1158
1159 info 10 ## SP not offset, return PC in LR
1160
1161 The 32-bit versions are similar, with ld4s replacing ld, and offsets into
1162 the GOT being multiples of 4 instead of 8.
1163
1164 */
1165
1166 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1167 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1168 #define PLT_TAIL_SIZE_IN_BUNDLES 1
1169
1170 #define PLT_HEADER_SIZE \
1171 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1172 #define PLT_ENTRY_SIZE \
1173 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1174 #define PLT_TAIL_SIZE \
1175 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1176
1177 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab)
1178
1179 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab))
1180
1181 static const bfd_byte
1182 tilegx64_plt0_entry[PLT_HEADER_SIZE] =
1183 {
1184 0x00, 0x30, 0x48, 0x51,
1185 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */
1186 0x00, 0x30, 0xbc, 0x35,
1187 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */
1188 0xff, 0xaf, 0x30, 0x40,
1189 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1190 };
1191
1192 static const bfd_byte
1193 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] =
1194 {
1195 0xdc, 0x0f, 0x00, 0x10,
1196 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1197 0xdb, 0x0f, 0x00, 0x10,
1198 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1199 0x9c, 0xc6, 0x0d, 0xd0,
1200 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1201 0x9b, 0xb6, 0xc5, 0xad,
1202 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1203 0xdd, 0x0f, 0x00, 0x70,
1204 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1205 };
1206
1207 static const bfd_byte
1208 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] =
1209 {
1210 0x00, 0x30, 0x48, 0x51,
1211 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1212 0x9c, 0x06, 0x00, 0x90,
1213 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1214 0xdd, 0x0f, 0x00, 0x70,
1215 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */
1216 0x9b, 0xb6, 0x0d, 0x50,
1217 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1218 0x00, 0x30, 0x48, 0xd1,
1219 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1220 };
1221
1222 /* Reuse an existing info 10 bundle. */
1223 static const bfd_byte *const tilegx64_plt_tail_entry =
1224 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1225
1226 static const bfd_byte
1227 tilegx32_plt0_entry[PLT_HEADER_SIZE] =
1228 {
1229 0x00, 0x30, 0x48, 0x51,
1230 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */
1231 0x00, 0x30, 0xbc, 0x35,
1232 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */
1233 0xff, 0xaf, 0x30, 0x40,
1234 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1235 };
1236
1237 static const bfd_byte
1238 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] =
1239 {
1240 0xdc, 0x0f, 0x00, 0x10,
1241 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1242 0xdb, 0x0f, 0x00, 0x10,
1243 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1244 0x9c, 0xc6, 0x0d, 0xd0,
1245 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1246 0x9b, 0xb6, 0xc5, 0xad,
1247 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */
1248 0xdd, 0x0f, 0x00, 0x70,
1249 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1250 };
1251
1252 static const bfd_byte
1253 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] =
1254 {
1255 0x00, 0x30, 0x48, 0x51,
1256 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1257 0x9c, 0x06, 0x00, 0x90,
1258 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1259 0xdd, 0x0f, 0x00, 0x70,
1260 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */
1261 0x9b, 0xb6, 0x0d, 0x50,
1262 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1263 0x00, 0x30, 0x48, 0xd1,
1264 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1265 };
1266
1267 /* Reuse an existing info 10 bundle. */
1268 static const bfd_byte *const tilegx32_plt_tail_entry =
1269 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1270
1271 static int
1272 tilegx_plt_entry_build (bfd *output_bfd,
1273 struct tilegx_elf_link_hash_table *htab,
1274 asection *splt, asection *sgotplt,
1275 bfd_vma offset, bfd_vma *r_offset)
1276 {
1277 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
1278 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab)
1279 + GOTPLT_HEADER_SIZE (htab));
1280 tilegx_bundle_bits *pc;
1281
1282 /* Compute the distance from the got entry to the lnk. */
1283 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1284 + sgotplt->output_offset
1285 + got_offset
1286 - splt->output_section->vma
1287 - splt->output_offset
1288 - offset
1289 - TILEGX_BUNDLE_SIZE_IN_BYTES;
1290
1291 /* Compute the distance to GOTPLT[0]. */
1292 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1293
1294 /* Check whether we can use the short plt entry with 16-bit offset. */
1295 bfd_boolean short_plt_entry =
1296 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1297
1298 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *)
1299 (ABI_64_P (output_bfd) ?
1300 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) :
1301 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry));
1302
1303 /* Copy the plt entry template. */
1304 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE);
1305
1306 /* Write the immediate offsets. */
1307 pc = (tilegx_bundle_bits *)(splt->contents + offset);
1308
1309 if (short_plt_entry)
1310 {
1311 /* { lnk r28 } */
1312 pc++;
1313
1314 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */
1315 *pc++ |= create_Imm16_X0 (dist_got_entry)
1316 | create_Imm16_X1 (dist_got0);
1317
1318 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */
1319 *pc++ |= create_Imm16_X0 (plt_index);
1320 }
1321 else
1322 {
1323 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */
1324 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16);
1325
1326 /* { moveli r27, &GOTPLT[0] ;
1327 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */
1328 *pc++ |= create_Imm16_X0 (dist_got0 >> 16)
1329 | create_Imm16_X1 (dist_got_entry);
1330
1331 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */
1332 *pc++ |= create_Imm16_X1 (dist_got0);
1333
1334 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1335 pc++;
1336
1337 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */
1338 *pc++ |= create_Imm16_X0 (plt_index);
1339 }
1340
1341 /* Set the relocation offset. */
1342 *r_offset = got_offset;
1343
1344 return plt_index;
1345 }
1346
1347 /* Create an entry in an TILEGX ELF linker hash table. */
1348
1349 static struct bfd_hash_entry *
1350 link_hash_newfunc (struct bfd_hash_entry *entry,
1351 struct bfd_hash_table *table, const char *string)
1352 {
1353 /* Allocate the structure if it has not already been allocated by a
1354 subclass. */
1355 if (entry == NULL)
1356 {
1357 entry =
1358 bfd_hash_allocate (table,
1359 sizeof (struct tilegx_elf_link_hash_entry));
1360 if (entry == NULL)
1361 return entry;
1362 }
1363
1364 /* Call the allocation method of the superclass. */
1365 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1366 if (entry != NULL)
1367 {
1368 struct tilegx_elf_link_hash_entry *eh;
1369
1370 eh = (struct tilegx_elf_link_hash_entry *) entry;
1371 eh->dyn_relocs = NULL;
1372 eh->tls_type = GOT_UNKNOWN;
1373 }
1374
1375 return entry;
1376 }
1377
1378 /* Create a TILEGX ELF linker hash table. */
1379
1380 struct bfd_link_hash_table *
1381 tilegx_elf_link_hash_table_create (bfd *abfd)
1382 {
1383 struct tilegx_elf_link_hash_table *ret;
1384 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table);
1385
1386 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1387 if (ret == NULL)
1388 return NULL;
1389
1390 #ifdef BFD64
1391 if (ABI_64_P (abfd))
1392 {
1393 ret->bytes_per_word = 8;
1394 ret->word_align_power = 3;
1395 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1396 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1397 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1398 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1399 ret->r_info = tilegx_elf_r_info_64;
1400 ret->r_symndx = tilegx_elf_r_symndx_64;
1401 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1402 ret->put_word = tilegx_put_word_64;
1403 }
1404 else
1405 #endif
1406 {
1407 ret->bytes_per_word = 4;
1408 ret->word_align_power = 2;
1409 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1410 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1411 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1412 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1413 ret->r_info = tilegx_elf_r_info_32;
1414 ret->r_symndx = tilegx_elf_r_symndx_32;
1415 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1416 ret->put_word = tilegx_put_word_32;
1417 }
1418
1419 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1420 sizeof (struct tilegx_elf_link_hash_entry),
1421 TILEGX_ELF_DATA))
1422 {
1423 free (ret);
1424 return NULL;
1425 }
1426
1427 return &ret->elf.root;
1428 }
1429
1430 /* Create the .got section. */
1431
1432 static bfd_boolean
1433 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1434 {
1435 flagword flags;
1436 asection *s, *s_got;
1437 struct elf_link_hash_entry *h;
1438 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1439 struct elf_link_hash_table *htab = elf_hash_table (info);
1440
1441 /* This function may be called more than once. */
1442 s = bfd_get_linker_section (abfd, ".got");
1443 if (s != NULL)
1444 return TRUE;
1445
1446 flags = bed->dynamic_sec_flags;
1447
1448 s = bfd_make_section_anyway_with_flags (abfd,
1449 (bed->rela_plts_and_copies_p
1450 ? ".rela.got" : ".rel.got"),
1451 (bed->dynamic_sec_flags
1452 | SEC_READONLY));
1453 if (s == NULL
1454 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1455 return FALSE;
1456 htab->srelgot = s;
1457
1458 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
1459 if (s == NULL
1460 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1461 return FALSE;
1462 htab->sgot = s;
1463
1464 /* The first bit of the global offset table is the header. */
1465 s->size += bed->got_header_size;
1466
1467 if (bed->want_got_plt)
1468 {
1469 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
1470 if (s == NULL
1471 || !bfd_set_section_alignment (abfd, s,
1472 bed->s->log_file_align))
1473 return FALSE;
1474 htab->sgotplt = s;
1475
1476 /* Reserve room for the header. */
1477 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1478 }
1479
1480 if (bed->want_got_sym)
1481 {
1482 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1483 section. We don't do this in the linker script because we don't want
1484 to define the symbol if we are not creating a global offset
1485 table. */
1486 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1487 "_GLOBAL_OFFSET_TABLE_");
1488 elf_hash_table (info)->hgot = h;
1489 if (h == NULL)
1490 return FALSE;
1491 }
1492
1493 return TRUE;
1494 }
1495
1496 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1497 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1498 hash table. */
1499
1500 bfd_boolean
1501 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1502 struct bfd_link_info *info)
1503 {
1504 struct tilegx_elf_link_hash_table *htab;
1505
1506 htab = tilegx_elf_hash_table (info);
1507 BFD_ASSERT (htab != NULL);
1508
1509 if (!tilegx_elf_create_got_section (dynobj, info))
1510 return FALSE;
1511
1512 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1513 return FALSE;
1514
1515 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1516 if (!bfd_link_pic (info))
1517 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1518
1519 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1520 || (!bfd_link_pic (info) && !htab->srelbss))
1521 abort ();
1522
1523 return TRUE;
1524 }
1525
1526 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1527
1528 void
1529 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1530 struct elf_link_hash_entry *dir,
1531 struct elf_link_hash_entry *ind)
1532 {
1533 struct tilegx_elf_link_hash_entry *edir, *eind;
1534
1535 edir = (struct tilegx_elf_link_hash_entry *) dir;
1536 eind = (struct tilegx_elf_link_hash_entry *) ind;
1537
1538 if (eind->dyn_relocs != NULL)
1539 {
1540 if (edir->dyn_relocs != NULL)
1541 {
1542 struct tilegx_elf_dyn_relocs **pp;
1543 struct tilegx_elf_dyn_relocs *p;
1544
1545 /* Add reloc counts against the indirect sym to the direct sym
1546 list. Merge any entries against the same section. */
1547 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1548 {
1549 struct tilegx_elf_dyn_relocs *q;
1550
1551 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1552 if (q->sec == p->sec)
1553 {
1554 q->pc_count += p->pc_count;
1555 q->count += p->count;
1556 *pp = p->next;
1557 break;
1558 }
1559 if (q == NULL)
1560 pp = &p->next;
1561 }
1562 *pp = edir->dyn_relocs;
1563 }
1564
1565 edir->dyn_relocs = eind->dyn_relocs;
1566 eind->dyn_relocs = NULL;
1567 }
1568
1569 if (ind->root.type == bfd_link_hash_indirect
1570 && dir->got.refcount <= 0)
1571 {
1572 edir->tls_type = eind->tls_type;
1573 eind->tls_type = GOT_UNKNOWN;
1574 }
1575 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1576 }
1577
1578 static int
1579 tilegx_tls_translate_to_le (int r_type)
1580 {
1581 switch (r_type)
1582 {
1583 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1584 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1585 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1586
1587 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1588 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1589 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1590
1591 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1592 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1593 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1594
1595 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1596 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1597 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1598
1599 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1600 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1601 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1602
1603 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1604 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1605 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1606 }
1607 return r_type;
1608 }
1609
1610 static int
1611 tilegx_tls_translate_to_ie (int r_type)
1612 {
1613 switch (r_type)
1614 {
1615 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1616 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1617 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1618
1619 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1620 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1621 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1622
1623 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1624 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1625 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1626
1627 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1628 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1629 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1630
1631 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1632 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1633 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1634
1635 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1636 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1637 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1638 }
1639 return r_type;
1640 }
1641
1642 static int
1643 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1644 int is_local, bfd_boolean disable_le_transition)
1645 {
1646 if (bfd_link_pic (info))
1647 return r_type;
1648
1649 if (is_local && !disable_le_transition)
1650 return tilegx_tls_translate_to_le (r_type);
1651 else
1652 return tilegx_tls_translate_to_ie (r_type);
1653 }
1654
1655 /* Look through the relocs for a section during the first phase, and
1656 allocate space in the global offset table or procedure linkage
1657 table. */
1658
1659 bfd_boolean
1660 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1661 asection *sec, const Elf_Internal_Rela *relocs)
1662 {
1663 struct tilegx_elf_link_hash_table *htab;
1664 Elf_Internal_Shdr *symtab_hdr;
1665 struct elf_link_hash_entry **sym_hashes;
1666 const Elf_Internal_Rela *rel;
1667 const Elf_Internal_Rela *rel_end;
1668 asection *sreloc;
1669 int num_relocs;
1670 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE;
1671
1672 if (bfd_link_relocatable (info))
1673 return TRUE;
1674
1675 htab = tilegx_elf_hash_table (info);
1676 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1677 sym_hashes = elf_sym_hashes (abfd);
1678
1679 sreloc = NULL;
1680
1681 num_relocs = sec->reloc_count;
1682
1683 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1684
1685 if (htab->elf.dynobj == NULL)
1686 htab->elf.dynobj = abfd;
1687
1688 rel_end = relocs + num_relocs;
1689
1690 /* Check whether to do optimization to transform TLS GD/IE
1691 referehces to TLS LE. We disable it if we're linking with old
1692 TLS code sequences that do not support such optimization. Old
1693 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1694 no tls_add relocations. */
1695 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1696 {
1697 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1698 switch (r_type)
1699 {
1700 case R_TILEGX_TLS_GD_CALL:
1701 case R_TILEGX_TLS_IE_LOAD:
1702 has_tls_gd_or_ie = TRUE;
1703 break;
1704 case R_TILEGX_IMM8_X0_TLS_ADD:
1705 case R_TILEGX_IMM8_Y0_TLS_ADD:
1706 case R_TILEGX_IMM8_X1_TLS_ADD:
1707 case R_TILEGX_IMM8_Y1_TLS_ADD:
1708 has_tls_add = TRUE;
1709 break;
1710 }
1711 }
1712
1713 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1714 htab->disable_le_transition |= sec->sec_flg0;
1715
1716 for (rel = relocs; rel < rel_end; rel++)
1717 {
1718 unsigned int r_type;
1719 unsigned long r_symndx;
1720 struct elf_link_hash_entry *h;
1721 int tls_type;
1722
1723 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1724 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1725
1726 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1727 {
1728 /* xgettext:c-format */
1729 _bfd_error_handler (_("%B: bad symbol index: %d"),
1730 abfd, r_symndx);
1731 return FALSE;
1732 }
1733
1734 if (r_symndx < symtab_hdr->sh_info)
1735 h = NULL;
1736 else
1737 {
1738 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1739 while (h->root.type == bfd_link_hash_indirect
1740 || h->root.type == bfd_link_hash_warning)
1741 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1742
1743 /* PR15323, ref flags aren't set for references in the same
1744 object. */
1745 h->root.non_ir_ref = 1;
1746 }
1747
1748 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1749 sec->sec_flg0);
1750 switch (r_type)
1751 {
1752 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1753 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1754 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1755 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1756 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1757 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1758 if (bfd_link_pic (info))
1759 goto r_tilegx_plt32;
1760 break;
1761
1762 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1763 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1764 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1765 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1766 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1767 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1768 BFD_ASSERT (bfd_link_pic (info));
1769 tls_type = GOT_TLS_GD;
1770 goto have_got_reference;
1771
1772 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1773 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1774 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1775 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1776 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1777 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1778 tls_type = GOT_TLS_IE;
1779 if (bfd_link_pic (info))
1780 info->flags |= DF_STATIC_TLS;
1781 goto have_got_reference;
1782
1783 case R_TILEGX_IMM16_X0_HW0_GOT:
1784 case R_TILEGX_IMM16_X1_HW0_GOT:
1785 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1786 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1787 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1788 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1789 tls_type = GOT_NORMAL;
1790 /* Fall Through */
1791
1792 have_got_reference:
1793 /* This symbol requires a global offset table entry. */
1794 {
1795 int old_tls_type;
1796
1797 if (h != NULL)
1798 {
1799 h->got.refcount += 1;
1800 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1801 }
1802 else
1803 {
1804 bfd_signed_vma *local_got_refcounts;
1805
1806 /* This is a global offset table entry for a local symbol. */
1807 local_got_refcounts = elf_local_got_refcounts (abfd);
1808 if (local_got_refcounts == NULL)
1809 {
1810 bfd_size_type size;
1811
1812 size = symtab_hdr->sh_info;
1813 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1814 local_got_refcounts = ((bfd_signed_vma *)
1815 bfd_zalloc (abfd, size));
1816 if (local_got_refcounts == NULL)
1817 return FALSE;
1818 elf_local_got_refcounts (abfd) = local_got_refcounts;
1819 _bfd_tilegx_elf_local_got_tls_type (abfd)
1820 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1821 }
1822 local_got_refcounts[r_symndx] += 1;
1823 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1824 }
1825
1826 /* If a TLS symbol is accessed using IE at least once,
1827 there is no point to use dynamic model for it. */
1828 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1829 && (old_tls_type != GOT_TLS_GD
1830 || tls_type != GOT_TLS_IE))
1831 {
1832 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1833 tls_type = old_tls_type;
1834 else
1835 {
1836 _bfd_error_handler
1837 /* xgettext:c-format */
1838 (_("%B: `%s' accessed both as normal and thread local symbol"),
1839 abfd, h ? h->root.root.string : "<local>");
1840 return FALSE;
1841 }
1842 }
1843
1844 if (old_tls_type != tls_type)
1845 {
1846 if (h != NULL)
1847 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1848 else
1849 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1850 }
1851 }
1852
1853 if (htab->elf.sgot == NULL)
1854 {
1855 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1856 return FALSE;
1857 }
1858 break;
1859
1860 case R_TILEGX_TLS_GD_CALL:
1861 if (bfd_link_pic (info))
1862 {
1863 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1864 against __tls_get_addr. */
1865 struct bfd_link_hash_entry *bh = NULL;
1866 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1867 "__tls_get_addr", 0,
1868 bfd_und_section_ptr, 0,
1869 NULL, FALSE, FALSE,
1870 &bh))
1871 return FALSE;
1872 h = (struct elf_link_hash_entry *) bh;
1873 }
1874 else
1875 break;
1876 /* Fall through */
1877
1878 case R_TILEGX_JUMPOFF_X1_PLT:
1879 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
1880 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
1881 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
1882 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
1883 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
1884 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
1885 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
1886 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
1887 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
1888 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
1889 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
1890 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
1891 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
1892 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
1893 /* This symbol requires a procedure linkage table entry. We
1894 actually build the entry in adjust_dynamic_symbol,
1895 because this might be a case of linking PIC code without
1896 linking in any dynamic objects, in which case we don't
1897 need to generate a procedure linkage table after all. */
1898
1899 if (h != NULL)
1900 {
1901 h->needs_plt = 1;
1902 h->plt.refcount += 1;
1903 }
1904 break;
1905
1906 case R_TILEGX_64_PCREL:
1907 case R_TILEGX_32_PCREL:
1908 case R_TILEGX_16_PCREL:
1909 case R_TILEGX_8_PCREL:
1910 case R_TILEGX_IMM16_X0_HW0_PCREL:
1911 case R_TILEGX_IMM16_X1_HW0_PCREL:
1912 case R_TILEGX_IMM16_X0_HW1_PCREL:
1913 case R_TILEGX_IMM16_X1_HW1_PCREL:
1914 case R_TILEGX_IMM16_X0_HW2_PCREL:
1915 case R_TILEGX_IMM16_X1_HW2_PCREL:
1916 case R_TILEGX_IMM16_X0_HW3_PCREL:
1917 case R_TILEGX_IMM16_X1_HW3_PCREL:
1918 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1919 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1920 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1921 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1922 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1923 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1924 if (h != NULL)
1925 h->non_got_ref = 1;
1926
1927 if (h != NULL
1928 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1929 break;
1930 /* Fall through. */
1931
1932 case R_TILEGX_64:
1933 case R_TILEGX_32:
1934 case R_TILEGX_16:
1935 case R_TILEGX_8:
1936 case R_TILEGX_HW0:
1937 case R_TILEGX_HW1:
1938 case R_TILEGX_HW2:
1939 case R_TILEGX_HW3:
1940 case R_TILEGX_HW0_LAST:
1941 case R_TILEGX_HW1_LAST:
1942 case R_TILEGX_HW2_LAST:
1943 case R_TILEGX_COPY:
1944 case R_TILEGX_GLOB_DAT:
1945 case R_TILEGX_JMP_SLOT:
1946 case R_TILEGX_RELATIVE:
1947 case R_TILEGX_BROFF_X1:
1948 case R_TILEGX_JUMPOFF_X1:
1949 case R_TILEGX_IMM8_X0:
1950 case R_TILEGX_IMM8_Y0:
1951 case R_TILEGX_IMM8_X1:
1952 case R_TILEGX_IMM8_Y1:
1953 case R_TILEGX_DEST_IMM8_X1:
1954 case R_TILEGX_MT_IMM14_X1:
1955 case R_TILEGX_MF_IMM14_X1:
1956 case R_TILEGX_MMSTART_X0:
1957 case R_TILEGX_MMEND_X0:
1958 case R_TILEGX_SHAMT_X0:
1959 case R_TILEGX_SHAMT_X1:
1960 case R_TILEGX_SHAMT_Y0:
1961 case R_TILEGX_SHAMT_Y1:
1962 case R_TILEGX_IMM16_X0_HW0:
1963 case R_TILEGX_IMM16_X1_HW0:
1964 case R_TILEGX_IMM16_X0_HW1:
1965 case R_TILEGX_IMM16_X1_HW1:
1966 case R_TILEGX_IMM16_X0_HW2:
1967 case R_TILEGX_IMM16_X1_HW2:
1968 case R_TILEGX_IMM16_X0_HW3:
1969 case R_TILEGX_IMM16_X1_HW3:
1970 case R_TILEGX_IMM16_X0_HW0_LAST:
1971 case R_TILEGX_IMM16_X1_HW0_LAST:
1972 case R_TILEGX_IMM16_X0_HW1_LAST:
1973 case R_TILEGX_IMM16_X1_HW1_LAST:
1974 case R_TILEGX_IMM16_X0_HW2_LAST:
1975 case R_TILEGX_IMM16_X1_HW2_LAST:
1976 if (h != NULL)
1977 h->non_got_ref = 1;
1978
1979 r_tilegx_plt32:
1980 if (h != NULL && !bfd_link_pic (info))
1981 {
1982 /* We may need a .plt entry if the function this reloc
1983 refers to is in a shared lib. */
1984 h->plt.refcount += 1;
1985 }
1986
1987 /* If we are creating a shared library, and this is a reloc
1988 against a global symbol, or a non PC relative reloc
1989 against a local symbol, then we need to copy the reloc
1990 into the shared library. However, if we are linking with
1991 -Bsymbolic, we do not need to copy a reloc against a
1992 global symbol which is defined in an object we are
1993 including in the link (i.e., DEF_REGULAR is set). At
1994 this point we have not seen all the input files, so it is
1995 possible that DEF_REGULAR is not set now but will be set
1996 later (it is never cleared). In case of a weak definition,
1997 DEF_REGULAR may be cleared later by a strong definition in
1998 a shared library. We account for that possibility below by
1999 storing information in the relocs_copied field of the hash
2000 table entry. A similar situation occurs when creating
2001 shared libraries and symbol visibility changes render the
2002 symbol local.
2003
2004 If on the other hand, we are creating an executable, we
2005 may need to keep relocations for symbols satisfied by a
2006 dynamic library if we manage to avoid copy relocs for the
2007 symbol. */
2008 if ((bfd_link_pic (info)
2009 && (sec->flags & SEC_ALLOC) != 0
2010 && (! tilegx_elf_howto_table[r_type].pc_relative
2011 || (h != NULL
2012 && (! info->symbolic
2013 || h->root.type == bfd_link_hash_defweak
2014 || !h->def_regular))))
2015 || (!bfd_link_pic (info)
2016 && (sec->flags & SEC_ALLOC) != 0
2017 && h != NULL
2018 && (h->root.type == bfd_link_hash_defweak
2019 || !h->def_regular)))
2020 {
2021 struct tilegx_elf_dyn_relocs *p;
2022 struct tilegx_elf_dyn_relocs **head;
2023
2024 /* When creating a shared object, we must copy these
2025 relocs into the output file. We create a reloc
2026 section in dynobj and make room for the reloc. */
2027 if (sreloc == NULL)
2028 {
2029 sreloc = _bfd_elf_make_dynamic_reloc_section
2030 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
2031 /*rela?*/ TRUE);
2032
2033 if (sreloc == NULL)
2034 return FALSE;
2035 }
2036
2037 /* If this is a global symbol, we count the number of
2038 relocations we need for this symbol. */
2039 if (h != NULL)
2040 head =
2041 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs;
2042 else
2043 {
2044 /* Track dynamic relocs needed for local syms too.
2045 We really need local syms available to do this
2046 easily. Oh well. */
2047
2048 asection *s;
2049 void *vpp;
2050 Elf_Internal_Sym *isym;
2051
2052 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2053 abfd, r_symndx);
2054 if (isym == NULL)
2055 return FALSE;
2056
2057 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2058 if (s == NULL)
2059 s = sec;
2060
2061 vpp = &elf_section_data (s)->local_dynrel;
2062 head = (struct tilegx_elf_dyn_relocs **) vpp;
2063 }
2064
2065 p = *head;
2066 if (p == NULL || p->sec != sec)
2067 {
2068 bfd_size_type amt = sizeof *p;
2069 p = ((struct tilegx_elf_dyn_relocs *)
2070 bfd_alloc (htab->elf.dynobj, amt));
2071 if (p == NULL)
2072 return FALSE;
2073 p->next = *head;
2074 *head = p;
2075 p->sec = sec;
2076 p->count = 0;
2077 p->pc_count = 0;
2078 }
2079
2080 p->count += 1;
2081 if (tilegx_elf_howto_table[r_type].pc_relative)
2082 p->pc_count += 1;
2083 }
2084
2085 break;
2086
2087 case R_TILEGX_GNU_VTINHERIT:
2088 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2089 return FALSE;
2090 break;
2091
2092 case R_TILEGX_GNU_VTENTRY:
2093 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2094 return FALSE;
2095 break;
2096
2097 default:
2098 break;
2099 }
2100 }
2101
2102 return TRUE;
2103 }
2104
2105 \f
2106 asection *
2107 tilegx_elf_gc_mark_hook (asection *sec,
2108 struct bfd_link_info *info,
2109 Elf_Internal_Rela *rel,
2110 struct elf_link_hash_entry *h,
2111 Elf_Internal_Sym *sym)
2112 {
2113 if (h != NULL)
2114 {
2115 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2116 {
2117 case R_TILEGX_GNU_VTINHERIT:
2118 case R_TILEGX_GNU_VTENTRY:
2119 return NULL;
2120 }
2121 }
2122
2123 /* FIXME: The test here, in check_relocs and in relocate_section
2124 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
2125 if (bfd_link_pic (info))
2126 {
2127 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2128 {
2129 case R_TILEGX_TLS_GD_CALL:
2130 /* This reloc implicitly references __tls_get_addr. We know
2131 another reloc will reference the same symbol as the one
2132 on this reloc, so the real symbol and section will be
2133 gc marked when processing the other reloc. That lets
2134 us handle __tls_get_addr here. */
2135 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
2136 FALSE, FALSE, TRUE);
2137 BFD_ASSERT (h != NULL);
2138 h->mark = 1;
2139 if (h->u.weakdef != NULL)
2140 h->u.weakdef->mark = 1;
2141 sym = NULL;
2142 }
2143 }
2144
2145 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2146 }
2147
2148 /* Update the got entry reference counts for the section being removed. */
2149 bfd_boolean
2150 tilegx_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
2151 asection *sec, const Elf_Internal_Rela *relocs)
2152 {
2153 struct tilegx_elf_link_hash_table *htab;
2154 Elf_Internal_Shdr *symtab_hdr;
2155 struct elf_link_hash_entry **sym_hashes;
2156 bfd_signed_vma *local_got_refcounts;
2157 const Elf_Internal_Rela *rel, *relend;
2158
2159 if (bfd_link_relocatable (info))
2160 return TRUE;
2161
2162 BFD_ASSERT (is_tilegx_elf (abfd) || sec->reloc_count == 0);
2163
2164 elf_section_data (sec)->local_dynrel = NULL;
2165
2166 htab = tilegx_elf_hash_table (info);
2167 BFD_ASSERT (htab != NULL);
2168 symtab_hdr = &elf_symtab_hdr (abfd);
2169 sym_hashes = elf_sym_hashes (abfd);
2170 local_got_refcounts = elf_local_got_refcounts (abfd);
2171
2172 relend = relocs + sec->reloc_count;
2173 for (rel = relocs; rel < relend; rel++)
2174 {
2175 unsigned long r_symndx;
2176 unsigned int r_type;
2177 struct elf_link_hash_entry *h = NULL;
2178
2179 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2180 if (r_symndx >= symtab_hdr->sh_info)
2181 {
2182 struct tilegx_elf_link_hash_entry *eh;
2183 struct tilegx_elf_dyn_relocs **pp;
2184 struct tilegx_elf_dyn_relocs *p;
2185
2186 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2187 while (h->root.type == bfd_link_hash_indirect
2188 || h->root.type == bfd_link_hash_warning)
2189 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2190 eh = (struct tilegx_elf_link_hash_entry *) h;
2191 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2192 if (p->sec == sec)
2193 {
2194 /* Everything must go for SEC. */
2195 *pp = p->next;
2196 break;
2197 }
2198 }
2199
2200 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2201 r_type = tilegx_elf_tls_transition (info, r_type, h != NULL,
2202 sec->sec_flg0);
2203 switch (r_type)
2204 {
2205 case R_TILEGX_IMM16_X0_HW0_GOT:
2206 case R_TILEGX_IMM16_X1_HW0_GOT:
2207 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
2208 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
2209 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
2210 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
2211 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
2212 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
2213 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
2214 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
2215 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
2216 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
2217 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
2218 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
2219 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
2220 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
2221 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
2222 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
2223 if (h != NULL)
2224 {
2225 if (h->got.refcount > 0)
2226 h->got.refcount--;
2227 }
2228 else
2229 {
2230 if (local_got_refcounts &&
2231 local_got_refcounts[r_symndx] > 0)
2232 local_got_refcounts[r_symndx]--;
2233 }
2234 break;
2235
2236 case R_TILEGX_64_PCREL:
2237 case R_TILEGX_32_PCREL:
2238 case R_TILEGX_16_PCREL:
2239 case R_TILEGX_8_PCREL:
2240 case R_TILEGX_IMM16_X0_HW0_PCREL:
2241 case R_TILEGX_IMM16_X1_HW0_PCREL:
2242 case R_TILEGX_IMM16_X0_HW1_PCREL:
2243 case R_TILEGX_IMM16_X1_HW1_PCREL:
2244 case R_TILEGX_IMM16_X0_HW2_PCREL:
2245 case R_TILEGX_IMM16_X1_HW2_PCREL:
2246 case R_TILEGX_IMM16_X0_HW3_PCREL:
2247 case R_TILEGX_IMM16_X1_HW3_PCREL:
2248 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
2249 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
2250 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
2251 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
2252 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
2253 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
2254 if (h != NULL
2255 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2256 break;
2257 /* Fall through. */
2258
2259 case R_TILEGX_64:
2260 case R_TILEGX_32:
2261 case R_TILEGX_16:
2262 case R_TILEGX_8:
2263 case R_TILEGX_HW0:
2264 case R_TILEGX_HW1:
2265 case R_TILEGX_HW2:
2266 case R_TILEGX_HW3:
2267 case R_TILEGX_HW0_LAST:
2268 case R_TILEGX_HW1_LAST:
2269 case R_TILEGX_HW2_LAST:
2270 case R_TILEGX_COPY:
2271 case R_TILEGX_GLOB_DAT:
2272 case R_TILEGX_JMP_SLOT:
2273 case R_TILEGX_RELATIVE:
2274 case R_TILEGX_BROFF_X1:
2275 case R_TILEGX_JUMPOFF_X1:
2276 case R_TILEGX_IMM8_X0:
2277 case R_TILEGX_IMM8_Y0:
2278 case R_TILEGX_IMM8_X1:
2279 case R_TILEGX_IMM8_Y1:
2280 case R_TILEGX_DEST_IMM8_X1:
2281 case R_TILEGX_MT_IMM14_X1:
2282 case R_TILEGX_MF_IMM14_X1:
2283 case R_TILEGX_MMSTART_X0:
2284 case R_TILEGX_MMEND_X0:
2285 case R_TILEGX_SHAMT_X0:
2286 case R_TILEGX_SHAMT_X1:
2287 case R_TILEGX_SHAMT_Y0:
2288 case R_TILEGX_SHAMT_Y1:
2289 case R_TILEGX_IMM16_X0_HW0:
2290 case R_TILEGX_IMM16_X1_HW0:
2291 case R_TILEGX_IMM16_X0_HW1:
2292 case R_TILEGX_IMM16_X1_HW1:
2293 case R_TILEGX_IMM16_X0_HW2:
2294 case R_TILEGX_IMM16_X1_HW2:
2295 case R_TILEGX_IMM16_X0_HW3:
2296 case R_TILEGX_IMM16_X1_HW3:
2297 case R_TILEGX_IMM16_X0_HW0_LAST:
2298 case R_TILEGX_IMM16_X1_HW0_LAST:
2299 case R_TILEGX_IMM16_X0_HW1_LAST:
2300 case R_TILEGX_IMM16_X1_HW1_LAST:
2301 case R_TILEGX_IMM16_X0_HW2_LAST:
2302 case R_TILEGX_IMM16_X1_HW2_LAST:
2303 if (bfd_link_pic (info))
2304 break;
2305 /* Fall through. */
2306
2307 case R_TILEGX_JUMPOFF_X1_PLT:
2308 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
2309 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
2310 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
2311 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
2312 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
2313 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
2314 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
2315 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
2316 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
2317 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
2318 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
2319 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
2320 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
2321 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
2322 if (h != NULL)
2323 {
2324 if (h->plt.refcount > 0)
2325 h->plt.refcount--;
2326 }
2327 break;
2328
2329 default:
2330 break;
2331 }
2332 }
2333
2334 return TRUE;
2335 }
2336
2337 /* Adjust a symbol defined by a dynamic object and referenced by a
2338 regular object. The current definition is in some section of the
2339 dynamic object, but we're not including those sections. We have to
2340 change the definition to something the rest of the link can
2341 understand. */
2342
2343 bfd_boolean
2344 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2345 struct elf_link_hash_entry *h)
2346 {
2347 struct tilegx_elf_link_hash_table *htab;
2348 struct tilegx_elf_link_hash_entry * eh;
2349 struct tilegx_elf_dyn_relocs *p;
2350 bfd *dynobj;
2351 asection *s;
2352
2353 htab = tilegx_elf_hash_table (info);
2354 BFD_ASSERT (htab != NULL);
2355
2356 dynobj = htab->elf.dynobj;
2357
2358 /* Make sure we know what is going on here. */
2359 BFD_ASSERT (dynobj != NULL
2360 && (h->needs_plt
2361 || h->u.weakdef != NULL
2362 || (h->def_dynamic
2363 && h->ref_regular
2364 && !h->def_regular)));
2365
2366 /* If this is a function, put it in the procedure linkage table. We
2367 will fill in the contents of the procedure linkage table later
2368 (although we could actually do it here). */
2369 if (h->type == STT_FUNC || h->needs_plt)
2370 {
2371 if (h->plt.refcount <= 0
2372 || SYMBOL_CALLS_LOCAL (info, h)
2373 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2374 && h->root.type == bfd_link_hash_undefweak))
2375 {
2376 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2377 reloc in an input file, but the symbol was never referred
2378 to by a dynamic object, or if all references were garbage
2379 collected. In such a case, we don't actually need to build
2380 a procedure linkage table, and we can just do a
2381 R_TILEGX_JUMPOFF_X1 relocation instead. */
2382 h->plt.offset = (bfd_vma) -1;
2383 h->needs_plt = 0;
2384 }
2385
2386 return TRUE;
2387 }
2388 else
2389 h->plt.offset = (bfd_vma) -1;
2390
2391 /* If this is a weak symbol, and there is a real definition, the
2392 processor independent code will have arranged for us to see the
2393 real definition first, and we can just use the same value. */
2394 if (h->u.weakdef != NULL)
2395 {
2396 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2397 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2398 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2399 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2400 return TRUE;
2401 }
2402
2403 /* This is a reference to a symbol defined by a dynamic object which
2404 is not a function. */
2405
2406 /* If we are creating a shared library, we must presume that the
2407 only references to the symbol are via the global offset table.
2408 For such cases we need not do anything here; the relocations will
2409 be handled correctly by relocate_section. */
2410 if (bfd_link_pic (info))
2411 return TRUE;
2412
2413 /* If there are no references to this symbol that do not use the
2414 GOT, we don't need to generate a copy reloc. */
2415 if (!h->non_got_ref)
2416 return TRUE;
2417
2418 /* If -z nocopyreloc was given, we won't generate them either. */
2419 if (info->nocopyreloc)
2420 {
2421 h->non_got_ref = 0;
2422 return TRUE;
2423 }
2424
2425 eh = (struct tilegx_elf_link_hash_entry *) h;
2426 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2427 {
2428 s = p->sec->output_section;
2429 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2430 break;
2431 }
2432
2433 /* If we didn't find any dynamic relocs in read-only sections, then
2434 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2435 if (p == NULL)
2436 {
2437 h->non_got_ref = 0;
2438 return TRUE;
2439 }
2440
2441 /* We must allocate the symbol in our .dynbss section, which will
2442 become part of the .bss section of the executable. There will be
2443 an entry for this symbol in the .dynsym section. The dynamic
2444 object will contain position independent code, so all references
2445 from the dynamic object to this symbol will go through the global
2446 offset table. The dynamic linker will use the .dynsym entry to
2447 determine the address it must put in the global offset table, so
2448 both the dynamic object and the regular object will refer to the
2449 same memory location for the variable. */
2450
2451 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2452 to copy the initial value out of the dynamic object and into the
2453 runtime process image. We need to remember the offset into the
2454 .rel.bss section we are going to use. */
2455 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2456 {
2457 htab->srelbss->size += TILEGX_ELF_RELA_BYTES (htab);
2458 h->needs_copy = 1;
2459 }
2460
2461 return _bfd_elf_adjust_dynamic_copy (info, h, htab->sdynbss);
2462 }
2463
2464 /* Allocate space in .plt, .got and associated reloc sections for
2465 dynamic relocs. */
2466
2467 static bfd_boolean
2468 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2469 {
2470 struct bfd_link_info *info;
2471 struct tilegx_elf_link_hash_table *htab;
2472 struct tilegx_elf_link_hash_entry *eh;
2473 struct tilegx_elf_dyn_relocs *p;
2474
2475 if (h->root.type == bfd_link_hash_indirect)
2476 return TRUE;
2477
2478 info = (struct bfd_link_info *) inf;
2479 htab = tilegx_elf_hash_table (info);
2480 BFD_ASSERT (htab != NULL);
2481
2482 if (htab->elf.dynamic_sections_created
2483 && h->plt.refcount > 0)
2484 {
2485 /* Make sure this symbol is output as a dynamic symbol.
2486 Undefined weak syms won't yet be marked as dynamic. */
2487 if (h->dynindx == -1
2488 && !h->forced_local)
2489 {
2490 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2491 return FALSE;
2492 }
2493
2494 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2495 {
2496 asection *s = htab->elf.splt;
2497
2498 /* Allocate room for the header and tail. */
2499 if (s->size == 0)
2500 {
2501 s->size = PLT_ENTRY_SIZE;
2502 }
2503
2504 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE;
2505
2506 /* If this symbol is not defined in a regular file, and we are
2507 not generating a shared library, then set the symbol to this
2508 location in the .plt. This is required to make function
2509 pointers compare as equal between the normal executable and
2510 the shared library. */
2511 if (! bfd_link_pic (info)
2512 && !h->def_regular)
2513 {
2514 h->root.u.def.section = s;
2515 h->root.u.def.value = h->plt.offset;
2516 }
2517
2518 /* Make room for this entry. */
2519 s->size += PLT_ENTRY_SIZE;
2520
2521 /* We also need to make an entry in the .got.plt section. */
2522 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2523
2524 /* We also need to make an entry in the .rela.plt section. */
2525 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2526 }
2527 else
2528 {
2529 h->plt.offset = (bfd_vma) -1;
2530 h->needs_plt = 0;
2531 }
2532 }
2533 else
2534 {
2535 h->plt.offset = (bfd_vma) -1;
2536 h->needs_plt = 0;
2537 }
2538
2539 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2540 requiring no TLS entry. */
2541 if (h->got.refcount > 0
2542 && !htab->disable_le_transition
2543 && !bfd_link_pic (info)
2544 && h->dynindx == -1
2545 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2546 h->got.offset = (bfd_vma) -1;
2547 else if (h->got.refcount > 0)
2548 {
2549 asection *s;
2550 bfd_boolean dyn;
2551 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2552
2553 /* Make sure this symbol is output as a dynamic symbol.
2554 Undefined weak syms won't yet be marked as dynamic. */
2555 if (h->dynindx == -1
2556 && !h->forced_local)
2557 {
2558 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2559 return FALSE;
2560 }
2561
2562 s = htab->elf.sgot;
2563 h->got.offset = s->size;
2564 s->size += TILEGX_ELF_WORD_BYTES (htab);
2565 /* TLS_GD entries need 2 consecutive GOT slots. */
2566 if (tls_type == GOT_TLS_GD)
2567 s->size += TILEGX_ELF_WORD_BYTES (htab);
2568 dyn = htab->elf.dynamic_sections_created;
2569 /* TLS_IE needs one dynamic relocation,
2570 TLS_GD needs two if local symbol and two if global. */
2571 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2572 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2573 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2574 bfd_link_pic (info),
2575 h))
2576 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2577 }
2578 else
2579 h->got.offset = (bfd_vma) -1;
2580
2581 eh = (struct tilegx_elf_link_hash_entry *) h;
2582 if (eh->dyn_relocs == NULL)
2583 return TRUE;
2584
2585 /* In the shared -Bsymbolic case, discard space allocated for
2586 dynamic pc-relative relocs against symbols which turn out to be
2587 defined in regular objects. For the normal shared case, discard
2588 space for pc-relative relocs that have become local due to symbol
2589 visibility changes. */
2590
2591 if (bfd_link_pic (info))
2592 {
2593 if (SYMBOL_CALLS_LOCAL (info, h))
2594 {
2595 struct tilegx_elf_dyn_relocs **pp;
2596
2597 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2598 {
2599 p->count -= p->pc_count;
2600 p->pc_count = 0;
2601 if (p->count == 0)
2602 *pp = p->next;
2603 else
2604 pp = &p->next;
2605 }
2606 }
2607
2608 /* Also discard relocs on undefined weak syms with non-default
2609 visibility. */
2610 if (eh->dyn_relocs != NULL
2611 && h->root.type == bfd_link_hash_undefweak)
2612 {
2613 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2614 eh->dyn_relocs = NULL;
2615
2616 /* Make sure undefined weak symbols are output as a dynamic
2617 symbol in PIEs. */
2618 else if (h->dynindx == -1
2619 && !h->forced_local)
2620 {
2621 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2622 return FALSE;
2623 }
2624 }
2625 }
2626 else
2627 {
2628 /* For the non-shared case, discard space for relocs against
2629 symbols which turn out to need copy relocs or are not
2630 dynamic. */
2631
2632 if (!h->non_got_ref
2633 && ((h->def_dynamic
2634 && !h->def_regular)
2635 || (htab->elf.dynamic_sections_created
2636 && (h->root.type == bfd_link_hash_undefweak
2637 || h->root.type == bfd_link_hash_undefined))))
2638 {
2639 /* Make sure this symbol is output as a dynamic symbol.
2640 Undefined weak syms won't yet be marked as dynamic. */
2641 if (h->dynindx == -1
2642 && !h->forced_local)
2643 {
2644 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2645 return FALSE;
2646 }
2647
2648 /* If that succeeded, we know we'll be keeping all the
2649 relocs. */
2650 if (h->dynindx != -1)
2651 goto keep;
2652 }
2653
2654 eh->dyn_relocs = NULL;
2655
2656 keep: ;
2657 }
2658
2659 /* Finally, allocate space. */
2660 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2661 {
2662 asection *sreloc = elf_section_data (p->sec)->sreloc;
2663 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2664 }
2665
2666 return TRUE;
2667 }
2668
2669 /* Find any dynamic relocs that apply to read-only sections. */
2670
2671 static bfd_boolean
2672 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2673 {
2674 struct tilegx_elf_link_hash_entry *eh;
2675 struct tilegx_elf_dyn_relocs *p;
2676
2677 eh = (struct tilegx_elf_link_hash_entry *) h;
2678 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2679 {
2680 asection *s = p->sec->output_section;
2681
2682 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2683 {
2684 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2685
2686 info->flags |= DF_TEXTREL;
2687
2688 /* Not an error, just cut short the traversal. */
2689 return FALSE;
2690 }
2691 }
2692 return TRUE;
2693 }
2694
2695 /* Return true if the dynamic symbol for a given section should be
2696 omitted when creating a shared library. */
2697
2698 bfd_boolean
2699 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2700 struct bfd_link_info *info,
2701 asection *p)
2702 {
2703 /* We keep the .got section symbol so that explicit relocations
2704 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2705 can be turned into relocations against the .got symbol. */
2706 if (strcmp (p->name, ".got") == 0)
2707 return FALSE;
2708
2709 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2710 }
2711
2712 bfd_boolean
2713 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2714 struct bfd_link_info *info)
2715 {
2716 struct tilegx_elf_link_hash_table *htab;
2717 bfd *dynobj;
2718 asection *s;
2719 bfd *ibfd;
2720
2721 htab = tilegx_elf_hash_table (info);
2722 BFD_ASSERT (htab != NULL);
2723 dynobj = htab->elf.dynobj;
2724 BFD_ASSERT (dynobj != NULL);
2725
2726 if (elf_hash_table (info)->dynamic_sections_created)
2727 {
2728 /* Set the contents of the .interp section to the interpreter. */
2729 if (bfd_link_executable (info) && !info->nointerp)
2730 {
2731 s = bfd_get_linker_section (dynobj, ".interp");
2732 BFD_ASSERT (s != NULL);
2733 s->size = strlen (htab->dynamic_interpreter) + 1;
2734 s->contents = (unsigned char *) htab->dynamic_interpreter;
2735 }
2736 }
2737
2738 /* Set up .got offsets for local syms, and space for local dynamic
2739 relocs. */
2740 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2741 {
2742 bfd_signed_vma *local_got;
2743 bfd_signed_vma *end_local_got;
2744 char *local_tls_type;
2745 bfd_size_type locsymcount;
2746 Elf_Internal_Shdr *symtab_hdr;
2747 asection *srel;
2748
2749 if (! is_tilegx_elf (ibfd))
2750 continue;
2751
2752 for (s = ibfd->sections; s != NULL; s = s->next)
2753 {
2754 struct tilegx_elf_dyn_relocs *p;
2755
2756 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2757 {
2758 if (!bfd_is_abs_section (p->sec)
2759 && bfd_is_abs_section (p->sec->output_section))
2760 {
2761 /* Input section has been discarded, either because
2762 it is a copy of a linkonce section or due to
2763 linker script /DISCARD/, so we'll be discarding
2764 the relocs too. */
2765 }
2766 else if (p->count != 0)
2767 {
2768 srel = elf_section_data (p->sec)->sreloc;
2769 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2770 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2771 info->flags |= DF_TEXTREL;
2772 }
2773 }
2774 }
2775
2776 local_got = elf_local_got_refcounts (ibfd);
2777 if (!local_got)
2778 continue;
2779
2780 symtab_hdr = &elf_symtab_hdr (ibfd);
2781 locsymcount = symtab_hdr->sh_info;
2782 end_local_got = local_got + locsymcount;
2783 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2784 s = htab->elf.sgot;
2785 srel = htab->elf.srelgot;
2786 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2787 {
2788 if (*local_got > 0)
2789 {
2790 *local_got = s->size;
2791 s->size += TILEGX_ELF_WORD_BYTES (htab);
2792 if (*local_tls_type == GOT_TLS_GD)
2793 s->size += TILEGX_ELF_WORD_BYTES (htab);
2794 if (bfd_link_pic (info)
2795 || *local_tls_type == GOT_TLS_GD
2796 || *local_tls_type == GOT_TLS_IE)
2797 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2798 }
2799 else
2800 *local_got = (bfd_vma) -1;
2801 }
2802 }
2803
2804 /* Allocate global sym .plt and .got entries, and space for global
2805 sym dynamic relocs. */
2806 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2807
2808 if (elf_hash_table (info)->dynamic_sections_created)
2809 {
2810 /* If the .got section is more than 0x8000 bytes, we add
2811 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2812 bit relocations have a greater chance of working. */
2813 if (htab->elf.sgot->size >= 0x8000
2814 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2815 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2816 }
2817
2818 if (htab->elf.sgotplt)
2819 {
2820 struct elf_link_hash_entry *got;
2821 got = elf_link_hash_lookup (elf_hash_table (info),
2822 "_GLOBAL_OFFSET_TABLE_",
2823 FALSE, FALSE, FALSE);
2824
2825 /* Don't allocate .got.plt section if there are no GOT nor PLT
2826 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2827 if ((got == NULL
2828 || !got->ref_regular_nonweak)
2829 && (htab->elf.sgotplt->size
2830 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2831 && (htab->elf.splt == NULL
2832 || htab->elf.splt->size == 0)
2833 && (htab->elf.sgot == NULL
2834 || (htab->elf.sgot->size
2835 == get_elf_backend_data (output_bfd)->got_header_size)))
2836 htab->elf.sgotplt->size = 0;
2837 }
2838
2839 /* The check_relocs and adjust_dynamic_symbol entry points have
2840 determined the sizes of the various dynamic sections. Allocate
2841 memory for them. */
2842 for (s = dynobj->sections; s != NULL; s = s->next)
2843 {
2844 if ((s->flags & SEC_LINKER_CREATED) == 0)
2845 continue;
2846
2847 if (s == htab->elf.splt
2848 || s == htab->elf.sgot
2849 || s == htab->elf.sgotplt
2850 || s == htab->sdynbss)
2851 {
2852 /* Strip this section if we don't need it; see the
2853 comment below. */
2854 }
2855 else if (strncmp (s->name, ".rela", 5) == 0)
2856 {
2857 if (s->size != 0)
2858 {
2859 /* We use the reloc_count field as a counter if we need
2860 to copy relocs into the output file. */
2861 s->reloc_count = 0;
2862 }
2863 }
2864 else
2865 {
2866 /* It's not one of our sections. */
2867 continue;
2868 }
2869
2870 if (s->size == 0)
2871 {
2872 /* If we don't need this section, strip it from the
2873 output file. This is mostly to handle .rela.bss and
2874 .rela.plt. We must create both sections in
2875 create_dynamic_sections, because they must be created
2876 before the linker maps input sections to output
2877 sections. The linker does that before
2878 adjust_dynamic_symbol is called, and it is that
2879 function which decides whether anything needs to go
2880 into these sections. */
2881 s->flags |= SEC_EXCLUDE;
2882 continue;
2883 }
2884
2885 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2886 continue;
2887
2888 /* Allocate memory for the section contents. Zero the memory
2889 for the benefit of .rela.plt, which has 4 unused entries
2890 at the beginning, and we don't want garbage. */
2891 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2892 if (s->contents == NULL)
2893 return FALSE;
2894 }
2895
2896 if (elf_hash_table (info)->dynamic_sections_created)
2897 {
2898 /* Add some entries to the .dynamic section. We fill in the
2899 values later, in tilegx_elf_finish_dynamic_sections, but we
2900 must add the entries now so that we get the correct size for
2901 the .dynamic section. The DT_DEBUG entry is filled in by the
2902 dynamic linker and used by the debugger. */
2903 #define add_dynamic_entry(TAG, VAL) \
2904 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2905
2906 if (bfd_link_executable (info))
2907 {
2908 if (!add_dynamic_entry (DT_DEBUG, 0))
2909 return FALSE;
2910 }
2911
2912 if (htab->elf.srelplt->size != 0)
2913 {
2914 if (!add_dynamic_entry (DT_PLTGOT, 0)
2915 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2916 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2917 || !add_dynamic_entry (DT_JMPREL, 0))
2918 return FALSE;
2919 }
2920
2921 if (!add_dynamic_entry (DT_RELA, 0)
2922 || !add_dynamic_entry (DT_RELASZ, 0)
2923 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab)))
2924 return FALSE;
2925
2926 /* If any dynamic relocs apply to a read-only section,
2927 then we need a DT_TEXTREL entry. */
2928 if ((info->flags & DF_TEXTREL) == 0)
2929 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2930
2931 if (info->flags & DF_TEXTREL)
2932 {
2933 if (!add_dynamic_entry (DT_TEXTREL, 0))
2934 return FALSE;
2935 }
2936 }
2937 #undef add_dynamic_entry
2938
2939 return TRUE;
2940 }
2941 \f
2942 /* Return the base VMA address which should be subtracted from real addresses
2943 when resolving @dtpoff relocation.
2944 This is PT_TLS segment p_vaddr. */
2945
2946 static bfd_vma
2947 dtpoff_base (struct bfd_link_info *info)
2948 {
2949 /* If tls_sec is NULL, we should have signalled an error already. */
2950 if (elf_hash_table (info)->tls_sec == NULL)
2951 return 0;
2952 return elf_hash_table (info)->tls_sec->vma;
2953 }
2954
2955 /* Return the relocation value for @tpoff relocation. */
2956
2957 static bfd_vma
2958 tpoff (struct bfd_link_info *info, bfd_vma address)
2959 {
2960 struct elf_link_hash_table *htab = elf_hash_table (info);
2961
2962 /* If tls_sec is NULL, we should have signalled an error already. */
2963 if (htab->tls_sec == NULL)
2964 return 0;
2965
2966 return (address - htab->tls_sec->vma);
2967 }
2968
2969 /* Copy SIZE bits from FROM to TO at address ADDR. */
2970
2971 static void
2972 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2973 {
2974 int i;
2975 for (i = 0; i < size; i++)
2976 {
2977 int from_byte = (from + i) / 8;
2978 int from_bit = (from + i) % 8;
2979 int to_byte = (to + i) / 8;
2980 int to_bit = (to + i) % 8;
2981 bfd_byte to_mask = 1 << to_bit;
2982 addr[to_byte] = (addr[to_byte] & ~to_mask)
2983 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2984 }
2985 }
2986
2987 /* Replace the MASK bits in ADDR with those in INSN, for the next
2988 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2989
2990 static void
2991 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2992 const bfd_byte *insn)
2993 {
2994 int i;
2995 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2996 {
2997 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2998 }
2999 }
3000
3001 /* Mask to extract the bits corresponding to an instruction in a
3002 specific pipe of a bundle. */
3003 static const bfd_byte insn_mask_X1[] = {
3004 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
3005 };
3006
3007 /* Mask to extract the bits corresponding to an instruction in a
3008 specific pipe of a bundle, minus the destination operand and the
3009 first source operand. */
3010 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
3011 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
3012 };
3013
3014 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
3015 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
3016 };
3017
3018 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
3019 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
3020 };
3021 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
3022 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
3023 };
3024
3025 /* Mask to extract the bits corresponding to an instruction in a
3026 specific pipe of a bundle, minus the register operands. */
3027 static const bfd_byte insn_mask_X0_no_operand[] = {
3028 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
3029 };
3030
3031 static const bfd_byte insn_mask_X1_no_operand[] = {
3032 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
3033 };
3034
3035 static const bfd_byte insn_mask_Y0_no_operand[] = {
3036 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
3037 };
3038
3039 static const bfd_byte insn_mask_Y1_no_operand[] = {
3040 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
3041 };
3042
3043 /* Various instructions synthesized to support tls references. */
3044
3045 /* ld r0, r0 in the X1 pipe, used for tls ie. */
3046 static const bfd_byte insn_tls_ie_ld_X1[] = {
3047 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
3048 };
3049
3050 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
3051 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
3052 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
3053 };
3054
3055 /* add r0, r0, tp in various pipes, used for tls ie. */
3056 static const bfd_byte insn_tls_ie_add_X0X1[] = {
3057 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
3058 };
3059 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
3060 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
3061 };
3062
3063 /* addx r0, r0, tp in various pipes, used for tls ie. */
3064 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
3065 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
3066 };
3067 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
3068 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
3069 };
3070
3071 /* move r0, r0 in various pipes, used for tls gd. */
3072 static const bfd_byte insn_tls_gd_add_X0X1[] = {
3073 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
3074 };
3075 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
3076 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
3077 };
3078
3079 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
3080 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
3081
3082 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
3083 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
3084
3085 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
3086 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
3087
3088 /* Relocate an TILEGX ELF section.
3089
3090 The RELOCATE_SECTION function is called by the new ELF backend linker
3091 to handle the relocations for a section.
3092
3093 The relocs are always passed as Rela structures.
3094
3095 This function is responsible for adjusting the section contents as
3096 necessary, and (if generating a relocatable output file) adjusting
3097 the reloc addend as necessary.
3098
3099 This function does not have to worry about setting the reloc
3100 address or the reloc symbol index.
3101
3102 LOCAL_SYMS is a pointer to the swapped in local symbols.
3103
3104 LOCAL_SECTIONS is an array giving the section in the input file
3105 corresponding to the st_shndx field of each local symbol.
3106
3107 The global hash table entry for the global symbols can be found
3108 via elf_sym_hashes (input_bfd).
3109
3110 When generating relocatable output, this function must handle
3111 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3112 going to be the section symbol corresponding to the output
3113 section, which means that the addend must be adjusted
3114 accordingly. */
3115
3116 bfd_boolean
3117 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3118 bfd *input_bfd, asection *input_section,
3119 bfd_byte *contents, Elf_Internal_Rela *relocs,
3120 Elf_Internal_Sym *local_syms,
3121 asection **local_sections)
3122 {
3123 struct tilegx_elf_link_hash_table *htab;
3124 Elf_Internal_Shdr *symtab_hdr;
3125 struct elf_link_hash_entry **sym_hashes;
3126 bfd_vma *local_got_offsets;
3127 bfd_vma got_base;
3128 asection *sreloc;
3129 Elf_Internal_Rela *rel;
3130 Elf_Internal_Rela *relend;
3131 int num_relocs;
3132
3133 htab = tilegx_elf_hash_table (info);
3134 BFD_ASSERT (htab != NULL);
3135 symtab_hdr = &elf_symtab_hdr (input_bfd);
3136 sym_hashes = elf_sym_hashes (input_bfd);
3137 local_got_offsets = elf_local_got_offsets (input_bfd);
3138
3139 if (elf_hash_table (info)->hgot == NULL)
3140 got_base = 0;
3141 else
3142 got_base = elf_hash_table (info)->hgot->root.u.def.value;
3143
3144 sreloc = elf_section_data (input_section)->sreloc;
3145
3146 rel = relocs;
3147 num_relocs = input_section->reloc_count;
3148 relend = relocs + num_relocs;
3149 for (; rel < relend; rel++)
3150 {
3151 int r_type, tls_type;
3152 bfd_boolean is_tls_iele, is_tls_le;
3153 reloc_howto_type *howto;
3154 unsigned long r_symndx;
3155 struct elf_link_hash_entry *h;
3156 Elf_Internal_Sym *sym;
3157 tilegx_create_func create_func;
3158 asection *sec;
3159 bfd_vma relocation;
3160 bfd_reloc_status_type r;
3161 const char *name;
3162 bfd_vma off;
3163 bfd_boolean is_plt = FALSE;
3164
3165 bfd_boolean unresolved_reloc;
3166
3167 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
3168 if (r_type == R_TILEGX_GNU_VTINHERIT
3169 || r_type == R_TILEGX_GNU_VTENTRY)
3170 continue;
3171
3172 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
3173 {
3174 /* Not clear if we need to check here, but just be paranoid. */
3175 _bfd_error_handler
3176 /* xgettext:c-format */
3177 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3178 input_bfd, r_type, input_section);
3179 bfd_set_error (bfd_error_bad_value);
3180 return FALSE;
3181 }
3182
3183 howto = tilegx_elf_howto_table + r_type;
3184
3185 /* This is a final link. */
3186 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
3187 h = NULL;
3188 sym = NULL;
3189 sec = NULL;
3190 unresolved_reloc = FALSE;
3191 if (r_symndx < symtab_hdr->sh_info)
3192 {
3193 sym = local_syms + r_symndx;
3194 sec = local_sections[r_symndx];
3195 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3196 }
3197 else
3198 {
3199 bfd_boolean warned ATTRIBUTE_UNUSED;
3200 bfd_boolean ignored ATTRIBUTE_UNUSED;
3201
3202 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3203 r_symndx, symtab_hdr, sym_hashes,
3204 h, sec, relocation,
3205 unresolved_reloc, warned, ignored);
3206 if (warned)
3207 {
3208 /* To avoid generating warning messages about truncated
3209 relocations, set the relocation's address to be the same as
3210 the start of this section. */
3211 if (input_section->output_section != NULL)
3212 relocation = input_section->output_section->vma;
3213 else
3214 relocation = 0;
3215 }
3216 }
3217
3218 if (sec != NULL && discarded_section (sec))
3219 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3220 rel, 1, relend, howto, 0, contents);
3221
3222 if (bfd_link_relocatable (info))
3223 continue;
3224
3225 if (h != NULL)
3226 name = h->root.root.string;
3227 else
3228 {
3229 name = (bfd_elf_string_from_elf_section
3230 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3231 if (name == NULL || *name == '\0')
3232 name = bfd_section_name (input_bfd, sec);
3233 }
3234
3235 switch (r_type)
3236 {
3237 case R_TILEGX_TLS_GD_CALL:
3238 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3239 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3240 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3241 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3242 case R_TILEGX_IMM8_X0_TLS_ADD:
3243 case R_TILEGX_IMM8_Y0_TLS_ADD:
3244 case R_TILEGX_IMM8_X1_TLS_ADD:
3245 case R_TILEGX_IMM8_Y1_TLS_ADD:
3246 tls_type = GOT_UNKNOWN;
3247 if (h == NULL && local_got_offsets)
3248 tls_type =
3249 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3250 else if (h != NULL)
3251 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3252
3253 is_tls_iele = (! bfd_link_pic (info) || tls_type == GOT_TLS_IE);
3254 is_tls_le = is_tls_iele && (!input_section->sec_flg0
3255 && !bfd_link_pic (info)
3256 && (h == NULL || h->dynindx == -1));
3257
3258 if (r_type == R_TILEGX_TLS_GD_CALL)
3259 {
3260 if (is_tls_le)
3261 {
3262 /* GD -> LE */
3263 tilegx_replace_insn (contents + rel->r_offset,
3264 insn_mask_X1, insn_move_X0X1);
3265 continue;
3266 }
3267 else if (is_tls_iele)
3268 {
3269 /* GD -> IE */
3270 if (ABI_64_P (output_bfd))
3271 tilegx_replace_insn (contents + rel->r_offset,
3272 insn_mask_X1, insn_tls_ie_ld_X1);
3273 else
3274 tilegx_replace_insn (contents + rel->r_offset,
3275 insn_mask_X1, insn_tls_ie_ld4s_X1);
3276 continue;
3277 }
3278
3279 /* GD -> GD */
3280 h = (struct elf_link_hash_entry *)
3281 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3282 FALSE, TRUE);
3283 BFD_ASSERT (h != NULL);
3284 r_type = R_TILEGX_JUMPOFF_X1_PLT;
3285 howto = tilegx_elf_howto_table + r_type;
3286 }
3287 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3288 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
3289 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
3290 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
3291 {
3292 bfd_boolean is_pipe0 =
3293 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3294 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
3295 bfd_boolean is_X0X1 =
3296 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3297 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
3298 int dest_begin = is_pipe0 ? 0 : 31;
3299 int src_begin;
3300 const bfd_byte *insn;
3301 const bfd_byte *mask = NULL;
3302
3303 if (is_tls_le)
3304 {
3305 /* 1. copy dest operand into the first source operand.
3306 2. change the opcode to "move". */
3307 src_begin = is_pipe0 ? 6 : 37;
3308 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
3309
3310 switch (r_type)
3311 {
3312 case R_TILEGX_IMM8_X0_TLS_ADD:
3313 mask = insn_mask_X0_no_dest_no_srca;
3314 break;
3315 case R_TILEGX_IMM8_X1_TLS_ADD:
3316 mask = insn_mask_X1_no_dest_no_srca;
3317 break;
3318 case R_TILEGX_IMM8_Y0_TLS_ADD:
3319 mask = insn_mask_Y0_no_dest_no_srca;
3320 break;
3321 case R_TILEGX_IMM8_Y1_TLS_ADD:
3322 mask = insn_mask_Y1_no_dest_no_srca;
3323 break;
3324 }
3325 }
3326 else
3327 {
3328 /* 1. copy dest operand into the second source operand.
3329 2. change the opcode to "add". */
3330 src_begin = is_pipe0 ? 12 : 43;
3331 if (ABI_64_P (output_bfd))
3332 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3333 else
3334 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3335
3336 switch (r_type)
3337 {
3338 case R_TILEGX_IMM8_X0_TLS_ADD:
3339 mask = insn_mask_X0_no_operand;
3340 break;
3341 case R_TILEGX_IMM8_X1_TLS_ADD:
3342 mask = insn_mask_X1_no_operand;
3343 break;
3344 case R_TILEGX_IMM8_Y0_TLS_ADD:
3345 mask = insn_mask_Y0_no_operand;
3346 break;
3347 case R_TILEGX_IMM8_Y1_TLS_ADD:
3348 mask = insn_mask_Y1_no_operand;
3349 break;
3350 }
3351 }
3352
3353 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3354 src_begin, 6);
3355 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3356
3357 continue;
3358 }
3359 else
3360 {
3361 const bfd_byte *mask = NULL;
3362 const bfd_byte *add_insn = NULL;
3363 bfd_boolean is_64bit = ABI_64_P (output_bfd);
3364
3365 switch (r_type)
3366 {
3367 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3368 add_insn = is_tls_iele
3369 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3370 : insn_tls_gd_add_X0X1;
3371 mask = insn_mask_X0_no_dest_no_srca;
3372 break;
3373 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3374 add_insn = is_tls_iele
3375 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3376 : insn_tls_gd_add_X0X1;
3377 mask = insn_mask_X1_no_dest_no_srca;
3378 break;
3379 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3380 add_insn = is_tls_iele
3381 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3382 : insn_tls_gd_add_Y0Y1;
3383 mask = insn_mask_Y0_no_dest_no_srca;
3384 break;
3385 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3386 add_insn = is_tls_iele
3387 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3388 : insn_tls_gd_add_Y0Y1;
3389 mask = insn_mask_Y1_no_dest_no_srca;
3390 break;
3391 }
3392
3393 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3394
3395 continue;
3396 }
3397 break;
3398 case R_TILEGX_TLS_IE_LOAD:
3399 if (!input_section->sec_flg0
3400 && !bfd_link_pic (info)
3401 && (h == NULL || h->dynindx == -1))
3402 {
3403 /* IE -> LE */
3404 tilegx_replace_insn (contents + rel->r_offset,
3405 insn_mask_X1_no_dest_no_srca,
3406 insn_move_X0X1);
3407 }
3408 else
3409 {
3410 /* IE -> IE */
3411 if (ABI_64_P (output_bfd))
3412 tilegx_replace_insn (contents + rel->r_offset,
3413 insn_mask_X1_no_dest_no_srca,
3414 insn_tls_ie_ld_X1);
3415 else
3416 tilegx_replace_insn (contents + rel->r_offset,
3417 insn_mask_X1_no_dest_no_srca,
3418 insn_tls_ie_ld4s_X1);
3419 }
3420 continue;
3421 break;
3422 default:
3423 break;
3424 }
3425
3426 switch (r_type)
3427 {
3428 case R_TILEGX_IMM16_X0_HW0_GOT:
3429 case R_TILEGX_IMM16_X1_HW0_GOT:
3430 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3431 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3432 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3433 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3434 /* Relocation is to the entry for this symbol in the global
3435 offset table. */
3436 if (htab->elf.sgot == NULL)
3437 abort ();
3438
3439 if (h != NULL)
3440 {
3441 bfd_boolean dyn;
3442
3443 off = h->got.offset;
3444 BFD_ASSERT (off != (bfd_vma) -1);
3445 dyn = elf_hash_table (info)->dynamic_sections_created;
3446
3447 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3448 bfd_link_pic (info),
3449 h)
3450 || (bfd_link_pic (info)
3451 && SYMBOL_REFERENCES_LOCAL (info, h)))
3452 {
3453 /* This is actually a static link, or it is a
3454 -Bsymbolic link and the symbol is defined
3455 locally, or the symbol was forced to be local
3456 because of a version file. We must initialize
3457 this entry in the global offset table. Since the
3458 offset must always be a multiple
3459 of 8 for 64-bit, we use the least significant bit
3460 to record whether we have initialized it already.
3461
3462 When doing a dynamic link, we create a .rela.got
3463 relocation entry to initialize the value. This
3464 is done in the finish_dynamic_symbol routine. */
3465 if ((off & 1) != 0)
3466 off &= ~1;
3467 else
3468 {
3469 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3470 htab->elf.sgot->contents + off);
3471 h->got.offset |= 1;
3472 }
3473 }
3474 else
3475 unresolved_reloc = FALSE;
3476 }
3477 else
3478 {
3479 BFD_ASSERT (local_got_offsets != NULL
3480 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3481
3482 off = local_got_offsets[r_symndx];
3483
3484 /* The offset must always be a multiple of 8 on 64-bit.
3485 We use the least significant bit to record
3486 whether we have already processed this entry. */
3487 if ((off & 1) != 0)
3488 off &= ~1;
3489 else
3490 {
3491 if (bfd_link_pic (info))
3492 {
3493 asection *s;
3494 Elf_Internal_Rela outrel;
3495
3496 /* We need to generate a R_TILEGX_RELATIVE reloc
3497 for the dynamic linker. */
3498 s = htab->elf.srelgot;
3499 BFD_ASSERT (s != NULL);
3500
3501 outrel.r_offset = (htab->elf.sgot->output_section->vma
3502 + htab->elf.sgot->output_offset
3503 + off);
3504 outrel.r_info =
3505 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3506 outrel.r_addend = relocation;
3507 relocation = 0;
3508 tilegx_elf_append_rela (output_bfd, s, &outrel);
3509 }
3510
3511 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3512 htab->elf.sgot->contents + off);
3513 local_got_offsets[r_symndx] |= 1;
3514 }
3515 }
3516 relocation = off - got_base;
3517 break;
3518
3519 case R_TILEGX_JUMPOFF_X1_PLT:
3520 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
3521 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
3522 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
3523 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
3524 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
3525 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
3526 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
3527 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
3528 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
3529 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
3530 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
3531 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
3532 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
3533 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
3534 /* Relocation is to the entry for this symbol in the
3535 procedure linkage table. */
3536 BFD_ASSERT (h != NULL);
3537
3538 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3539 {
3540 /* We didn't make a PLT entry for this symbol. This
3541 happens when statically linking PIC code, or when
3542 using -Bsymbolic. */
3543 break;
3544 }
3545
3546 relocation = (htab->elf.splt->output_section->vma
3547 + htab->elf.splt->output_offset
3548 + h->plt.offset);
3549 unresolved_reloc = FALSE;
3550 break;
3551
3552 case R_TILEGX_64_PCREL:
3553 case R_TILEGX_32_PCREL:
3554 case R_TILEGX_16_PCREL:
3555 case R_TILEGX_8_PCREL:
3556 case R_TILEGX_IMM16_X0_HW0_PCREL:
3557 case R_TILEGX_IMM16_X1_HW0_PCREL:
3558 case R_TILEGX_IMM16_X0_HW1_PCREL:
3559 case R_TILEGX_IMM16_X1_HW1_PCREL:
3560 case R_TILEGX_IMM16_X0_HW2_PCREL:
3561 case R_TILEGX_IMM16_X1_HW2_PCREL:
3562 case R_TILEGX_IMM16_X0_HW3_PCREL:
3563 case R_TILEGX_IMM16_X1_HW3_PCREL:
3564 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3565 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3566 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3567 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3568 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3569 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3570 if (h != NULL
3571 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3572 break;
3573 /* Fall through. */
3574 case R_TILEGX_64:
3575 case R_TILEGX_32:
3576 case R_TILEGX_16:
3577 case R_TILEGX_8:
3578 case R_TILEGX_HW0:
3579 case R_TILEGX_HW1:
3580 case R_TILEGX_HW2:
3581 case R_TILEGX_HW3:
3582 case R_TILEGX_HW0_LAST:
3583 case R_TILEGX_HW1_LAST:
3584 case R_TILEGX_HW2_LAST:
3585 case R_TILEGX_COPY:
3586 case R_TILEGX_GLOB_DAT:
3587 case R_TILEGX_JMP_SLOT:
3588 case R_TILEGX_RELATIVE:
3589 case R_TILEGX_BROFF_X1:
3590 case R_TILEGX_JUMPOFF_X1:
3591 case R_TILEGX_IMM8_X0:
3592 case R_TILEGX_IMM8_Y0:
3593 case R_TILEGX_IMM8_X1:
3594 case R_TILEGX_IMM8_Y1:
3595 case R_TILEGX_DEST_IMM8_X1:
3596 case R_TILEGX_MT_IMM14_X1:
3597 case R_TILEGX_MF_IMM14_X1:
3598 case R_TILEGX_MMSTART_X0:
3599 case R_TILEGX_MMEND_X0:
3600 case R_TILEGX_SHAMT_X0:
3601 case R_TILEGX_SHAMT_X1:
3602 case R_TILEGX_SHAMT_Y0:
3603 case R_TILEGX_SHAMT_Y1:
3604 case R_TILEGX_IMM16_X0_HW0:
3605 case R_TILEGX_IMM16_X1_HW0:
3606 case R_TILEGX_IMM16_X0_HW1:
3607 case R_TILEGX_IMM16_X1_HW1:
3608 case R_TILEGX_IMM16_X0_HW2:
3609 case R_TILEGX_IMM16_X1_HW2:
3610 case R_TILEGX_IMM16_X0_HW3:
3611 case R_TILEGX_IMM16_X1_HW3:
3612 case R_TILEGX_IMM16_X0_HW0_LAST:
3613 case R_TILEGX_IMM16_X1_HW0_LAST:
3614 case R_TILEGX_IMM16_X0_HW1_LAST:
3615 case R_TILEGX_IMM16_X1_HW1_LAST:
3616 case R_TILEGX_IMM16_X0_HW2_LAST:
3617 case R_TILEGX_IMM16_X1_HW2_LAST:
3618 if ((input_section->flags & SEC_ALLOC) == 0)
3619 break;
3620
3621 if ((bfd_link_pic (info)
3622 && (h == NULL
3623 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3624 || h->root.type != bfd_link_hash_undefweak)
3625 && (! howto->pc_relative
3626 || !SYMBOL_CALLS_LOCAL (info, h)))
3627 || (!bfd_link_pic (info)
3628 && h != NULL
3629 && h->dynindx != -1
3630 && !h->non_got_ref
3631 && ((h->def_dynamic
3632 && !h->def_regular)
3633 || h->root.type == bfd_link_hash_undefweak
3634 || h->root.type == bfd_link_hash_undefined)))
3635 {
3636 Elf_Internal_Rela outrel;
3637 bfd_boolean skip, relocate = FALSE;
3638
3639 /* When generating a shared object, these relocations
3640 are copied into the output file to be resolved at run
3641 time. */
3642
3643 BFD_ASSERT (sreloc != NULL);
3644
3645 skip = FALSE;
3646
3647 outrel.r_offset =
3648 _bfd_elf_section_offset (output_bfd, info, input_section,
3649 rel->r_offset);
3650 if (outrel.r_offset == (bfd_vma) -1)
3651 skip = TRUE;
3652 else if (outrel.r_offset == (bfd_vma) -2)
3653 skip = TRUE, relocate = TRUE;
3654 outrel.r_offset += (input_section->output_section->vma
3655 + input_section->output_offset);
3656
3657 switch (r_type)
3658 {
3659 case R_TILEGX_64_PCREL:
3660 case R_TILEGX_32_PCREL:
3661 case R_TILEGX_16_PCREL:
3662 case R_TILEGX_8_PCREL:
3663 /* If the symbol is not dynamic, we should not keep
3664 a dynamic relocation. But an .rela.* slot has been
3665 allocated for it, output R_TILEGX_NONE.
3666 FIXME: Add code tracking needed dynamic relocs as
3667 e.g. i386 has. */
3668 if (h->dynindx == -1)
3669 skip = TRUE, relocate = TRUE;
3670 break;
3671 }
3672
3673 if (skip)
3674 memset (&outrel, 0, sizeof outrel);
3675 /* h->dynindx may be -1 if the symbol was marked to
3676 become local. */
3677 else if (h != NULL &&
3678 h->dynindx != -1
3679 && (! is_plt
3680 || !bfd_link_pic (info)
3681 || !SYMBOLIC_BIND (info, h)
3682 || !h->def_regular))
3683 {
3684 BFD_ASSERT (h->dynindx != -1);
3685 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3686 outrel.r_addend = rel->r_addend;
3687 }
3688 else
3689 {
3690 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3691 {
3692 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3693 R_TILEGX_RELATIVE);
3694 outrel.r_addend = relocation + rel->r_addend;
3695 }
3696 else
3697 {
3698 long indx;
3699
3700 outrel.r_addend = relocation + rel->r_addend;
3701
3702 if (is_plt)
3703 sec = htab->elf.splt;
3704
3705 if (bfd_is_abs_section (sec))
3706 indx = 0;
3707 else if (sec == NULL || sec->owner == NULL)
3708 {
3709 bfd_set_error (bfd_error_bad_value);
3710 return FALSE;
3711 }
3712 else
3713 {
3714 asection *osec;
3715
3716 /* We are turning this relocation into one
3717 against a section symbol. It would be
3718 proper to subtract the symbol's value,
3719 osec->vma, from the emitted reloc addend,
3720 but ld.so expects buggy relocs. */
3721 osec = sec->output_section;
3722 indx = elf_section_data (osec)->dynindx;
3723
3724 if (indx == 0)
3725 {
3726 osec = htab->elf.text_index_section;
3727 indx = elf_section_data (osec)->dynindx;
3728 }
3729
3730 /* FIXME: we really should be able to link non-pic
3731 shared libraries. */
3732 if (indx == 0)
3733 {
3734 BFD_FAIL ();
3735 _bfd_error_handler
3736 (_("%B: probably compiled without -fPIC?"),
3737 input_bfd);
3738 bfd_set_error (bfd_error_bad_value);
3739 return FALSE;
3740 }
3741 }
3742
3743 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3744 r_type);
3745 }
3746 }
3747
3748 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3749
3750 /* This reloc will be computed at runtime, so there's no
3751 need to do anything now. */
3752 if (! relocate)
3753 continue;
3754 }
3755 break;
3756
3757 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3758 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3759 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3760 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3761 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3762 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3763 if (bfd_link_pic (info))
3764 {
3765 Elf_Internal_Rela outrel;
3766 bfd_boolean skip;
3767
3768 BFD_ASSERT (sreloc != NULL);
3769 skip = FALSE;
3770 outrel.r_offset =
3771 _bfd_elf_section_offset (output_bfd, info, input_section,
3772 rel->r_offset);
3773 if (outrel.r_offset == (bfd_vma) -1)
3774 skip = TRUE;
3775 else if (outrel.r_offset == (bfd_vma) -2)
3776 skip = TRUE;
3777 outrel.r_offset += (input_section->output_section->vma
3778 + input_section->output_offset);
3779 if (skip)
3780 memset (&outrel, 0, sizeof outrel);
3781 else
3782 {
3783 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3784 outrel.r_addend = relocation - dtpoff_base (info)
3785 + rel->r_addend;
3786 }
3787
3788 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3789 continue;
3790 }
3791 relocation = tpoff (info, relocation);
3792 break;
3793
3794 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3795 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3796 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3797 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3798 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3799 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3800 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3801 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3802 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3803 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3804 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3805 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3806 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3807 input_section->sec_flg0);
3808 tls_type = GOT_UNKNOWN;
3809 if (h == NULL && local_got_offsets)
3810 tls_type =
3811 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3812 else if (h != NULL)
3813 {
3814 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3815 if (!bfd_link_pic (info)
3816 && h->dynindx == -1
3817 && tls_type == GOT_TLS_IE)
3818 r_type = (!input_section->sec_flg0
3819 ? tilegx_tls_translate_to_le (r_type)
3820 : tilegx_tls_translate_to_ie (r_type));
3821 }
3822
3823 if (tls_type == GOT_TLS_IE)
3824 r_type = tilegx_tls_translate_to_ie (r_type);
3825
3826 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3827 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3828 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3829 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3830 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3831 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3832 {
3833 relocation = tpoff (info, relocation);
3834 break;
3835 }
3836
3837 if (h != NULL)
3838 {
3839 off = h->got.offset;
3840 h->got.offset |= 1;
3841 }
3842 else
3843 {
3844 BFD_ASSERT (local_got_offsets != NULL);
3845 off = local_got_offsets[r_symndx];
3846 local_got_offsets[r_symndx] |= 1;
3847 }
3848
3849 if (htab->elf.sgot == NULL)
3850 abort ();
3851
3852 if ((off & 1) != 0)
3853 off &= ~1;
3854 else
3855 {
3856 Elf_Internal_Rela outrel;
3857 int indx = 0;
3858 bfd_boolean need_relocs = FALSE;
3859
3860 if (htab->elf.srelgot == NULL)
3861 abort ();
3862
3863 if (h != NULL)
3864 {
3865 bfd_boolean dyn;
3866 dyn = htab->elf.dynamic_sections_created;
3867
3868 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3869 bfd_link_pic (info),
3870 h)
3871 && (!bfd_link_pic (info)
3872 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3873 {
3874 indx = h->dynindx;
3875 }
3876 }
3877
3878 /* The GOT entries have not been initialized yet. Do it
3879 now, and emit any relocations. */
3880 if ((bfd_link_pic (info) || indx != 0)
3881 && (h == NULL
3882 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3883 || h->root.type != bfd_link_hash_undefweak))
3884 need_relocs = TRUE;
3885
3886 switch (r_type)
3887 {
3888 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3889 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3890 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3891 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3892 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3893 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3894 if (need_relocs) {
3895 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3896 htab->elf.sgot->contents + off);
3897 outrel.r_offset = (htab->elf.sgot->output_section->vma
3898 + htab->elf.sgot->output_offset + off);
3899 outrel.r_addend = 0;
3900 if (indx == 0)
3901 outrel.r_addend = relocation - dtpoff_base (info);
3902 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3903 TILEGX_ELF_TPOFF_RELOC (htab));
3904 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3905 } else {
3906 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3907 tpoff (info, relocation),
3908 htab->elf.sgot->contents + off);
3909 }
3910 break;
3911
3912 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3913 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3914 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3915 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3916 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3917 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3918 if (need_relocs) {
3919 outrel.r_offset = (htab->elf.sgot->output_section->vma
3920 + htab->elf.sgot->output_offset + off);
3921 outrel.r_addend = 0;
3922 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3923 TILEGX_ELF_DTPMOD_RELOC (htab));
3924 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3925 htab->elf.sgot->contents + off);
3926 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3927 if (indx == 0)
3928 {
3929 BFD_ASSERT (! unresolved_reloc);
3930 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3931 relocation - dtpoff_base (info),
3932 (htab->elf.sgot->contents + off +
3933 TILEGX_ELF_WORD_BYTES (htab)));
3934 }
3935 else
3936 {
3937 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3938 (htab->elf.sgot->contents + off +
3939 TILEGX_ELF_WORD_BYTES (htab)));
3940 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3941 TILEGX_ELF_DTPOFF_RELOC (htab));
3942 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3943 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3944 }
3945 }
3946
3947 else {
3948 /* If we are not emitting relocations for a
3949 general dynamic reference, then we must be in a
3950 static link or an executable link with the
3951 symbol binding locally. Mark it as belonging
3952 to module 1, the executable. */
3953 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3954 htab->elf.sgot->contents + off );
3955 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3956 relocation - dtpoff_base (info),
3957 htab->elf.sgot->contents + off +
3958 TILEGX_ELF_WORD_BYTES (htab));
3959 }
3960 break;
3961 }
3962 }
3963
3964 if (off >= (bfd_vma) -2)
3965 abort ();
3966
3967 relocation = off - got_base;
3968 unresolved_reloc = FALSE;
3969 howto = tilegx_elf_howto_table + r_type;
3970 break;
3971
3972 default:
3973 break;
3974 }
3975
3976 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3977 because such sections are not SEC_ALLOC and thus ld.so will
3978 not process them. */
3979 if (unresolved_reloc
3980 && !((input_section->flags & SEC_DEBUGGING) != 0
3981 && h->def_dynamic)
3982 && _bfd_elf_section_offset (output_bfd, info, input_section,
3983 rel->r_offset) != (bfd_vma) -1)
3984 _bfd_error_handler
3985 /* xgettext:c-format */
3986 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3987 input_bfd,
3988 input_section,
3989 (long) rel->r_offset,
3990 howto->name,
3991 h->root.root.string);
3992
3993 r = bfd_reloc_continue;
3994
3995 /* Get the operand creation function, if any. */
3996 create_func = reloc_to_create_func[r_type];
3997 if (create_func == NULL)
3998 {
3999 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4000 contents, rel->r_offset,
4001 relocation, rel->r_addend);
4002 }
4003 else
4004 {
4005 if (howto->pc_relative)
4006 {
4007 relocation -=
4008 input_section->output_section->vma + input_section->output_offset;
4009 if (howto->pcrel_offset)
4010 relocation -= rel->r_offset;
4011 }
4012
4013 bfd_byte *data;
4014
4015 /* Add the relocation addend if any to the final target value */
4016 relocation += rel->r_addend;
4017
4018 /* Do basic range checking */
4019 r = bfd_check_overflow (howto->complain_on_overflow,
4020 howto->bitsize,
4021 howto->rightshift,
4022 TILEGX_ELF_WORD_BYTES (htab) * 8,
4023 relocation);
4024
4025 /*
4026 * Write the relocated value out into the raw section data.
4027 * Don't put a relocation out in the .rela section.
4028 */
4029 tilegx_bundle_bits mask = create_func(-1);
4030 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
4031
4032 /* Only touch bytes while the mask is not 0, so we
4033 don't write to out of bounds memory if this is actually
4034 a 16-bit switch instruction. */
4035 for (data = contents + rel->r_offset; mask != 0; data++)
4036 {
4037 bfd_byte byte_mask = (bfd_byte)mask;
4038 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
4039 mask >>= 8;
4040 value >>= 8;
4041 }
4042 }
4043
4044 if (r != bfd_reloc_ok)
4045 {
4046 const char *msg = NULL;
4047
4048 switch (r)
4049 {
4050 case bfd_reloc_overflow:
4051 (*info->callbacks->reloc_overflow)
4052 (info, (h ? &h->root : NULL), name, howto->name,
4053 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4054 break;
4055
4056 case bfd_reloc_undefined:
4057 (*info->callbacks->undefined_symbol)
4058 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
4059 break;
4060
4061 case bfd_reloc_outofrange:
4062 msg = _("internal error: out of range error");
4063 break;
4064
4065 case bfd_reloc_notsupported:
4066 msg = _("internal error: unsupported relocation error");
4067 break;
4068
4069 case bfd_reloc_dangerous:
4070 msg = _("internal error: dangerous relocation");
4071 break;
4072
4073 default:
4074 msg = _("internal error: unknown error");
4075 break;
4076 }
4077
4078 if (msg)
4079 (*info->callbacks->warning) (info, msg, name, input_bfd,
4080 input_section, rel->r_offset);
4081 }
4082 }
4083
4084 return TRUE;
4085 }
4086
4087 /* Finish up dynamic symbol handling. We set the contents of various
4088 dynamic sections here. */
4089
4090 bfd_boolean
4091 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
4092 struct bfd_link_info *info,
4093 struct elf_link_hash_entry *h,
4094 Elf_Internal_Sym *sym)
4095 {
4096 struct tilegx_elf_link_hash_table *htab;
4097
4098 htab = tilegx_elf_hash_table (info);
4099 BFD_ASSERT (htab != NULL);
4100
4101 if (h->plt.offset != (bfd_vma) -1)
4102 {
4103 asection *splt;
4104 asection *srela;
4105 asection *sgotplt;
4106 Elf_Internal_Rela rela;
4107 bfd_byte *loc;
4108 bfd_vma r_offset;
4109 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
4110
4111
4112 int rela_index;
4113
4114 /* This symbol has an entry in the PLT. Set it up. */
4115
4116 BFD_ASSERT (h->dynindx != -1);
4117
4118 splt = htab->elf.splt;
4119 srela = htab->elf.srelplt;
4120 sgotplt = htab->elf.sgotplt;
4121
4122 if (splt == NULL || srela == NULL)
4123 abort ();
4124
4125 /* Fill in the entry in the procedure linkage table. */
4126 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
4127 h->plt.offset, &r_offset);
4128
4129 /* Fill in the entry in the global offset table, which initially points
4130 to the beginning of the plt. */
4131 TILEGX_ELF_PUT_WORD (htab, output_bfd,
4132 splt->output_section->vma + splt->output_offset,
4133 sgotplt->contents + r_offset);
4134
4135 /* Fill in the entry in the .rela.plt section. */
4136 rela.r_offset = (sgotplt->output_section->vma
4137 + sgotplt->output_offset
4138 + r_offset);
4139 rela.r_addend = 0;
4140 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
4141
4142 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
4143 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4144
4145 if (!h->def_regular)
4146 {
4147 /* Mark the symbol as undefined, rather than as defined in
4148 the .plt section. Leave the value alone. */
4149 sym->st_shndx = SHN_UNDEF;
4150 /* If the symbol is weak, we do need to clear the value.
4151 Otherwise, the PLT entry would provide a definition for
4152 the symbol even if the symbol wasn't defined anywhere,
4153 and so the symbol would never be NULL. */
4154 if (!h->ref_regular_nonweak)
4155 sym->st_value = 0;
4156 }
4157 }
4158
4159 if (h->got.offset != (bfd_vma) -1
4160 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4161 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4162 {
4163 asection *sgot;
4164 asection *srela;
4165 Elf_Internal_Rela rela;
4166
4167 /* This symbol has an entry in the GOT. Set it up. */
4168
4169 sgot = htab->elf.sgot;
4170 srela = htab->elf.srelgot;
4171 BFD_ASSERT (sgot != NULL && srela != NULL);
4172
4173 rela.r_offset = (sgot->output_section->vma
4174 + sgot->output_offset
4175 + (h->got.offset &~ (bfd_vma) 1));
4176
4177 /* If this is a -Bsymbolic link, and the symbol is defined
4178 locally, we just want to emit a RELATIVE reloc. Likewise if
4179 the symbol was forced to be local because of a version file.
4180 The entry in the global offset table will already have been
4181 initialized in the relocate_section function. */
4182 if (bfd_link_pic (info)
4183 && (info->symbolic || h->dynindx == -1)
4184 && h->def_regular)
4185 {
4186 asection *sec = h->root.u.def.section;
4187 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
4188 rela.r_addend = (h->root.u.def.value
4189 + sec->output_section->vma
4190 + sec->output_offset);
4191 }
4192 else
4193 {
4194 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
4195 rela.r_addend = 0;
4196 }
4197
4198 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
4199 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4200 tilegx_elf_append_rela (output_bfd, srela, &rela);
4201 }
4202
4203 if (h->needs_copy)
4204 {
4205 asection *s;
4206 Elf_Internal_Rela rela;
4207
4208 /* This symbols needs a copy reloc. Set it up. */
4209 BFD_ASSERT (h->dynindx != -1);
4210
4211 s = htab->srelbss;
4212 BFD_ASSERT (s != NULL);
4213
4214 rela.r_offset = (h->root.u.def.value
4215 + h->root.u.def.section->output_section->vma
4216 + h->root.u.def.section->output_offset);
4217 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
4218 rela.r_addend = 0;
4219 tilegx_elf_append_rela (output_bfd, s, &rela);
4220 }
4221
4222 /* Mark some specially defined symbols as absolute. */
4223 if (h == htab->elf.hdynamic
4224 || (h == htab->elf.hgot || h == htab->elf.hplt))
4225 sym->st_shndx = SHN_ABS;
4226
4227 return TRUE;
4228 }
4229
4230 /* Finish up the dynamic sections. */
4231
4232 static bfd_boolean
4233 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4234 bfd *dynobj, asection *sdyn,
4235 asection *splt ATTRIBUTE_UNUSED)
4236 {
4237 struct tilegx_elf_link_hash_table *htab;
4238 const struct elf_backend_data *bed;
4239 bfd_byte *dyncon, *dynconend;
4240 size_t dynsize;
4241
4242 htab = tilegx_elf_hash_table (info);
4243 BFD_ASSERT (htab != NULL);
4244 bed = get_elf_backend_data (output_bfd);
4245 dynsize = bed->s->sizeof_dyn;
4246 dynconend = sdyn->contents + sdyn->size;
4247
4248 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4249 {
4250 Elf_Internal_Dyn dyn;
4251 asection *s;
4252
4253 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4254
4255 switch (dyn.d_tag)
4256 {
4257 case DT_PLTGOT:
4258 s = htab->elf.sgotplt;
4259 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4260 break;
4261 case DT_JMPREL:
4262 s = htab->elf.srelplt;
4263 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4264 break;
4265 case DT_PLTRELSZ:
4266 s = htab->elf.srelplt;
4267 dyn.d_un.d_val = s->size;
4268 break;
4269 default:
4270 continue;
4271 }
4272
4273 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4274 }
4275 return TRUE;
4276 }
4277
4278 bfd_boolean
4279 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
4280 struct bfd_link_info *info)
4281 {
4282 bfd *dynobj;
4283 asection *sdyn;
4284 struct tilegx_elf_link_hash_table *htab;
4285 size_t pad_size;
4286
4287 htab = tilegx_elf_hash_table (info);
4288 BFD_ASSERT (htab != NULL);
4289 dynobj = htab->elf.dynobj;
4290
4291 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4292
4293 if (elf_hash_table (info)->dynamic_sections_created)
4294 {
4295 asection *splt;
4296 bfd_boolean ret;
4297
4298 splt = htab->elf.splt;
4299 BFD_ASSERT (splt != NULL && sdyn != NULL);
4300
4301 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
4302
4303 if (ret != TRUE)
4304 return ret;
4305
4306 /* Fill in the head and tail entries in the procedure linkage table. */
4307 if (splt->size > 0)
4308 {
4309 memcpy (splt->contents,
4310 ABI_64_P (output_bfd) ?
4311 tilegx64_plt0_entry : tilegx32_plt0_entry,
4312 PLT_HEADER_SIZE);
4313
4314 memcpy (splt->contents + splt->size
4315 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE,
4316 ABI_64_P (output_bfd) ?
4317 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4318 PLT_TAIL_SIZE);
4319 /* Add padding so that the plt section is a multiple of its
4320 entry size. */
4321 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE;
4322 memset (splt->contents + splt->size - pad_size, 0, pad_size);
4323 }
4324
4325 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4326 = PLT_ENTRY_SIZE;
4327 }
4328
4329 if (htab->elf.sgotplt)
4330 {
4331 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4332 {
4333 _bfd_error_handler
4334 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4335 return FALSE;
4336 }
4337
4338 if (htab->elf.sgotplt->size > 0)
4339 {
4340 /* Write the first two entries in .got.plt, needed for the dynamic
4341 linker. */
4342 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4343 htab->elf.sgotplt->contents);
4344 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4345 htab->elf.sgotplt->contents
4346 + GOT_ENTRY_SIZE (htab));
4347 }
4348
4349 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4350 GOT_ENTRY_SIZE (htab);
4351 }
4352
4353 if (htab->elf.sgot)
4354 {
4355 if (htab->elf.sgot->size > 0)
4356 {
4357 /* Set the first entry in the global offset table to the address of
4358 the dynamic section. */
4359 bfd_vma val = (sdyn ?
4360 sdyn->output_section->vma + sdyn->output_offset :
4361 0);
4362 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4363 htab->elf.sgot->contents);
4364 }
4365
4366 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4367 GOT_ENTRY_SIZE (htab);
4368 }
4369
4370 return TRUE;
4371 }
4372
4373 \f
4374
4375 /* Return address for Ith PLT stub in section PLT, for relocation REL
4376 or (bfd_vma) -1 if it should not be included. */
4377
4378 bfd_vma
4379 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4380 const arelent *rel ATTRIBUTE_UNUSED)
4381 {
4382 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4383 }
4384
4385 enum elf_reloc_type_class
4386 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4387 const asection *rel_sec ATTRIBUTE_UNUSED,
4388 const Elf_Internal_Rela *rela)
4389 {
4390 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4391 {
4392 case R_TILEGX_RELATIVE:
4393 return reloc_class_relative;
4394 case R_TILEGX_JMP_SLOT:
4395 return reloc_class_plt;
4396 case R_TILEGX_COPY:
4397 return reloc_class_copy;
4398 default:
4399 return reloc_class_normal;
4400 }
4401 }
4402
4403 int
4404 tilegx_additional_program_headers (bfd *abfd,
4405 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4406 {
4407 /* Each .intrpt section specified by the user adds another PT_LOAD
4408 header since the sections are discontiguous. */
4409 static const char intrpt_sections[4][9] =
4410 {
4411 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4412 };
4413 int count = 0;
4414 int i;
4415
4416 for (i = 0; i < 4; i++)
4417 {
4418 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4419 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4420 ++count;
4421 }
4422
4423 /* Add four "padding" headers in to leave room in case a custom linker
4424 script does something fancy. Otherwise ld complains that it ran
4425 out of program headers and refuses to link. */
4426 count += 4;
4427
4428 return count;
4429 }
4430
4431
4432 bfd_boolean
4433 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4434 {
4435 bfd *obfd = info->output_bfd;
4436 const char *targ1 = bfd_get_target (ibfd);
4437 const char *targ2 = bfd_get_target (obfd);
4438
4439 if (strcmp (targ1, targ2) != 0)
4440 {
4441 _bfd_error_handler
4442 /* xgettext:c-format */
4443 (_("%B: Cannot link together %s and %s objects."),
4444 ibfd, targ1, targ2);
4445 bfd_set_error (bfd_error_bad_value);
4446 return FALSE;
4447 }
4448
4449 return TRUE;
4450 }
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