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BFD whitespace fixes
[deliverable/binutils-gdb.git] / bfd / elfxx-tilegx.c
1 /* TILE-Gx-specific support for ELF.
2 Copyright (C) 2011-2017 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/tilegx.h"
26 #include "opcode/tilegx.h"
27 #include "libiberty.h"
28 #include "elfxx-tilegx.h"
29
30 #define ABI_64_P(abfd) \
31 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
32
33 #define TILEGX_ELF_WORD_BYTES(htab) \
34 ((htab)->bytes_per_word)
35
36 /* The size of an external RELA relocation. */
37 #define TILEGX_ELF_RELA_BYTES(htab) \
38 ((htab)->bytes_per_rela)
39
40 /* Both 32-bit and 64-bit tilegx encode this in an identical manner,
41 so just take advantage of that. */
42 #define TILEGX_ELF_R_TYPE(r_info) \
43 ((r_info) & 0xFF)
44
45 #define TILEGX_ELF_R_INFO(htab, in_rel, index, type) \
46 ((htab)->r_info (in_rel, index, type))
47
48 #define TILEGX_ELF_R_SYMNDX(htab, r_info) \
49 ((htab)->r_symndx(r_info))
50
51 #define TILEGX_ELF_DTPOFF_RELOC(htab) \
52 ((htab)->dtpoff_reloc)
53
54 #define TILEGX_ELF_DTPMOD_RELOC(htab) \
55 ((htab)->dtpmod_reloc)
56
57 #define TILEGX_ELF_TPOFF_RELOC(htab) \
58 ((htab)->tpoff_reloc)
59
60 #define TILEGX_ELF_PUT_WORD(htab, bfd, val, ptr) \
61 ((htab)->put_word (bfd, val, ptr))
62
63 /* The name of the dynamic interpreter. This is put in the .interp
64 section. */
65
66 #define ELF64_DYNAMIC_INTERPRETER "/lib/ld.so.1"
67 #define ELF32_DYNAMIC_INTERPRETER "/lib32/ld.so.1"
68
69
70 static reloc_howto_type tilegx_elf_howto_table [] =
71 {
72 /* This reloc does nothing. */
73 HOWTO (R_TILEGX_NONE, /* type */
74 0, /* rightshift */
75 3, /* size (0 = byte, 1 = short, 2 = long) */
76 0, /* bitsize */
77 FALSE, /* pc_relative */
78 0, /* bitpos */
79 complain_overflow_dont, /* complain_on_overflow */
80 bfd_elf_generic_reloc, /* special_function */
81 "R_TILEGX_NONE", /* name */
82 FALSE, /* partial_inplace */
83 0, /* src_mask */
84 0, /* dst_mask */
85 FALSE), /* pcrel_offset */
86 #ifdef BFD64
87 /* A 64 bit absolute relocation. */
88 HOWTO (R_TILEGX_64, /* type */
89 0, /* rightshift */
90 4, /* size (0 = byte, 1 = short, 2 = long) */
91 64, /* bitsize */
92 FALSE, /* pc_relative */
93 0, /* bitpos */
94 complain_overflow_dont, /* complain_on_overflow */
95 bfd_elf_generic_reloc, /* special_function */
96 "R_TILEGX_64", /* name */
97 FALSE, /* partial_inplace */
98 0, /* src_mask */
99 0xffffffffffffffffULL, /* dst_mask */
100 FALSE), /* pcrel_offset */
101 #endif
102 /* A 32 bit absolute relocation. */
103 HOWTO (R_TILEGX_32, /* type */
104 0, /* rightshift */
105 2, /* size (0 = byte, 1 = short, 2 = long) */
106 32, /* bitsize */
107 FALSE, /* pc_relative */
108 0, /* bitpos */
109 complain_overflow_dont, /* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_TILEGX_32", /* name */
112 FALSE, /* partial_inplace */
113 0, /* src_mask */
114 0xffffffff, /* dst_mask */
115 FALSE), /* pcrel_offset */
116
117 /* A 16 bit absolute relocation. */
118 HOWTO (R_TILEGX_16, /* type */
119 0, /* rightshift */
120 1, /* size (0 = byte, 1 = short, 2 = long) */
121 16, /* bitsize */
122 FALSE, /* pc_relative */
123 0, /* bitpos */
124 complain_overflow_bitfield, /* complain_on_overflow */
125 bfd_elf_generic_reloc, /* special_function */
126 "R_TILEGX_16", /* name */
127 FALSE, /* partial_inplace */
128 0, /* src_mask */
129 0xffff, /* dst_mask */
130 FALSE), /* pcrel_offset */
131
132 /* An 8 bit absolute relocation. */
133 HOWTO (R_TILEGX_8, /* type */
134 0, /* rightshift */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
136 8, /* bitsize */
137 FALSE, /* pc_relative */
138 0, /* bitpos */
139 complain_overflow_unsigned, /* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_TILEGX_8", /* name */
142 FALSE, /* partial_inplace */
143 0, /* src_mask */
144 0xff, /* dst_mask */
145 FALSE), /* pcrel_offset */
146 #ifdef BFD64
147 /* A 64 bit pc-relative relocation. */
148 HOWTO (R_TILEGX_64_PCREL,/* type */
149 0, /* rightshift */
150 4, /* size (0 = byte, 1 = short, 2 = long) */
151 64, /* bitsize */
152 TRUE, /* pc_relative */
153 0, /* bitpos */
154 complain_overflow_dont, /* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_TILEGX_32_PCREL", /* name */
157 FALSE, /* partial_inplace */
158 0, /* src_mask */
159 0xffffffffffffffffULL, /* dst_mask */
160 TRUE), /* pcrel_offset */
161 #endif
162 /* A 32 bit pc-relative relocation. */
163 HOWTO (R_TILEGX_32_PCREL,/* type */
164 0, /* rightshift */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
166 32, /* bitsize */
167 TRUE, /* pc_relative */
168 0, /* bitpos */
169 complain_overflow_dont, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_TILEGX_32_PCREL", /* name */
172 FALSE, /* partial_inplace */
173 0, /* src_mask */
174 0xffffffff, /* dst_mask */
175 TRUE), /* pcrel_offset */
176
177 /* A 16 bit pc-relative relocation. */
178 HOWTO (R_TILEGX_16_PCREL,/* type */
179 0, /* rightshift */
180 1, /* size (0 = byte, 1 = short, 2 = long) */
181 16, /* bitsize */
182 TRUE, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_signed, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_TILEGX_16_PCREL", /* name */
187 FALSE, /* partial_inplace */
188 0, /* src_mask */
189 0xffff, /* dst_mask */
190 TRUE), /* pcrel_offset */
191
192 /* An 8 bit pc-relative relocation. */
193 HOWTO (R_TILEGX_8_PCREL, /* type */
194 0, /* rightshift */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
196 8, /* bitsize */
197 TRUE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_signed, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_TILEGX_8_PCREL",/* name */
202 FALSE, /* partial_inplace */
203 0, /* src_mask */
204 0xff, /* dst_mask */
205 TRUE), /* pcrel_offset */
206
207 /* A 16 bit relocation without overflow. */
208 HOWTO (R_TILEGX_HW0, /* type */
209 0, /* rightshift */
210 1, /* size (0 = byte, 1 = short, 2 = long) */
211 16, /* bitsize */
212 FALSE, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_dont,/* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_TILEGX_HW0", /* name */
217 FALSE, /* partial_inplace */
218 0, /* src_mask */
219 0xffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
221
222 /* A 16 bit relocation without overflow. */
223 HOWTO (R_TILEGX_HW1, /* type */
224 16, /* rightshift */
225 1, /* size (0 = byte, 1 = short, 2 = long) */
226 16, /* bitsize */
227 FALSE, /* pc_relative */
228 0, /* bitpos */
229 complain_overflow_dont,/* complain_on_overflow */
230 bfd_elf_generic_reloc, /* special_function */
231 "R_TILEGX_HW1", /* name */
232 FALSE, /* partial_inplace */
233 0, /* src_mask */
234 0xffff, /* dst_mask */
235 FALSE), /* pcrel_offset */
236
237 /* A 16 bit relocation without overflow. */
238 HOWTO (R_TILEGX_HW2, /* type */
239 32, /* rightshift */
240 1, /* size (0 = byte, 1 = short, 2 = long) */
241 16, /* bitsize */
242 FALSE, /* pc_relative */
243 0, /* bitpos */
244 complain_overflow_dont,/* complain_on_overflow */
245 bfd_elf_generic_reloc, /* special_function */
246 "R_TILEGX_HW2", /* name */
247 FALSE, /* partial_inplace */
248 0, /* src_mask */
249 0xffff, /* dst_mask */
250 FALSE), /* pcrel_offset */
251
252 /* A 16 bit relocation without overflow. */
253 HOWTO (R_TILEGX_HW3, /* type */
254 48, /* rightshift */
255 1, /* size (0 = byte, 1 = short, 2 = long) */
256 16, /* bitsize */
257 FALSE, /* pc_relative */
258 0, /* bitpos */
259 complain_overflow_dont,/* complain_on_overflow */
260 bfd_elf_generic_reloc, /* special_function */
261 "R_TILEGX_HW3", /* name */
262 FALSE, /* partial_inplace */
263 0, /* src_mask */
264 0xffff, /* dst_mask */
265 FALSE), /* pcrel_offset */
266
267 /* A 16 bit relocation with overflow. */
268 HOWTO (R_TILEGX_HW0_LAST, /* type */
269 0, /* rightshift */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
271 16, /* bitsize */
272 FALSE, /* pc_relative */
273 0, /* bitpos */
274 complain_overflow_signed,/* complain_on_overflow */
275 bfd_elf_generic_reloc, /* special_function */
276 "R_TILEGX_HW0_LAST", /* name */
277 FALSE, /* partial_inplace */
278 0, /* src_mask */
279 0xffff, /* dst_mask */
280 FALSE), /* pcrel_offset */
281
282 /* A 16 bit relocation with overflow. */
283 HOWTO (R_TILEGX_HW1_LAST, /* type */
284 16, /* rightshift */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
287 FALSE, /* pc_relative */
288 0, /* bitpos */
289 complain_overflow_signed,/* complain_on_overflow */
290 bfd_elf_generic_reloc, /* special_function */
291 "R_TILEGX_HW1_LAST", /* name */
292 FALSE, /* partial_inplace */
293 0, /* src_mask */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
296
297 /* A 16 bit relocation with overflow. */
298 HOWTO (R_TILEGX_HW2_LAST, /* type */
299 32, /* rightshift */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
301 16, /* bitsize */
302 FALSE, /* pc_relative */
303 0, /* bitpos */
304 complain_overflow_signed,/* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_TILEGX_HW2_LAST", /* name */
307 FALSE, /* partial_inplace */
308 0, /* src_mask */
309 0xffff, /* dst_mask */
310 FALSE), /* pcrel_offset */
311
312 HOWTO (R_TILEGX_COPY, /* type */
313 0, /* rightshift */
314 0, /* size (0 = byte, 1 = short, 2 = long) */
315 0, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_dont, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_TILEGX_COPY", /* name */
321 FALSE, /* partial_inplace */
322 0, /* src_mask */
323 0, /* dst_mask */
324 TRUE), /* pcrel_offset */
325
326 HOWTO (R_TILEGX_GLOB_DAT, /* type */
327 0, /* rightshift */
328 0, /* size (0 = byte, 1 = short, 2 = long) */
329 0, /* bitsize */
330 FALSE, /* pc_relative */
331 0, /* bitpos */
332 complain_overflow_dont, /* complain_on_overflow */
333 bfd_elf_generic_reloc, /* special_function */
334 "R_TILEGX_GLOB_DAT", /* name */
335 FALSE, /* partial_inplace */
336 0, /* src_mask */
337 0, /* dst_mask */
338 TRUE), /* pcrel_offset */
339
340 HOWTO (R_TILEGX_JMP_SLOT, /* type */
341 0, /* rightshift */
342 0, /* size (0 = byte, 1 = short, 2 = long) */
343 0, /* bitsize */
344 FALSE, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_dont, /* complain_on_overflow */
347 bfd_elf_generic_reloc, /* special_function */
348 "R_TILEGX_JMP_SLOT", /* name */
349 FALSE, /* partial_inplace */
350 0, /* src_mask */
351 0, /* dst_mask */
352 TRUE), /* pcrel_offset */
353
354 HOWTO (R_TILEGX_RELATIVE, /* type */
355 0, /* rightshift */
356 0, /* size (0 = byte, 1 = short, 2 = long) */
357 0, /* bitsize */
358 FALSE, /* pc_relative */
359 0, /* bitpos */
360 complain_overflow_dont, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_TILEGX_RELATIVE", /* name */
363 FALSE, /* partial_inplace */
364 0, /* src_mask */
365 0, /* dst_mask */
366 TRUE), /* pcrel_offset */
367
368 HOWTO (R_TILEGX_BROFF_X1, /* type */
369 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 17, /* bitsize */
372 TRUE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_TILEGX_BROFF_X1", /* name */
377 FALSE, /* partial_inplace */
378 0, /* src_mask */
379 -1, /* dst_mask */
380 TRUE), /* pcrel_offset */
381
382 HOWTO (R_TILEGX_JUMPOFF_X1, /* type */
383 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 27, /* bitsize */
386 TRUE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_signed,/* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_TILEGX_JUMPOFF_X1", /* name */
391 FALSE, /* partial_inplace */
392 0, /* src_mask */
393 -1, /* dst_mask */
394 TRUE), /* pcrel_offset */
395
396 HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */
397 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
399 27, /* bitsize */
400 TRUE, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_signed,/* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_TILEGX_JUMPOFF_X1_PLT", /* name */
405 FALSE, /* partial_inplace */
406 0, /* src_mask */
407 -1, /* dst_mask */
408 TRUE), /* pcrel_offset */
409
410 #define TILEGX_IMM_HOWTO(name, size, bitsize) \
411 HOWTO (name, 0, size, bitsize, FALSE, 0, \
412 complain_overflow_signed, bfd_elf_generic_reloc, \
413 #name, FALSE, 0, -1, FALSE)
414
415 #define TILEGX_UIMM_HOWTO(name, size, bitsize) \
416 HOWTO (name, 0, size, bitsize, FALSE, 0, \
417 complain_overflow_unsigned, bfd_elf_generic_reloc, \
418 #name, FALSE, 0, -1, FALSE)
419
420 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 0, 8),
421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8),
422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8),
423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8),
424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8),
425
426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14),
427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14),
428
429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6),
430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6),
431
432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6),
433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6),
434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6),
435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6),
436
437 #define TILEGX_IMM16_HOWTO(name, rshift) \
438 HOWTO (name, rshift, 1, 16, FALSE, 0, \
439 complain_overflow_dont, bfd_elf_generic_reloc, \
440 #name, FALSE, 0, 0xffff, FALSE)
441
442 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0),
443 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0),
444 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16),
445 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16),
446 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32),
447 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32),
448 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48),
449 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48),
450
451 #define TILEGX_IMM16_HOWTO_LAST(name, rshift) \
452 HOWTO (name, rshift, 1, 16, FALSE, 0, \
453 complain_overflow_signed, bfd_elf_generic_reloc, \
454 #name, FALSE, 0, 0xffff, FALSE)
455
456 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0),
457 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0),
458 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16),
459 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16),
460 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32),
461 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32),
462
463 /* PC-relative offsets. */
464
465 #define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \
466 HOWTO (name, rshift, 1, 16, TRUE, 0, \
467 complain_overflow_dont, bfd_elf_generic_reloc, \
468 #name, FALSE, 0, 0xffff, TRUE)
469
470 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0),
471 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0),
472 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16),
473 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16),
474 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32),
475 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32),
476 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48),
477 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48),
478
479 #define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \
480 HOWTO (name, rshift, 1, 16, TRUE, 0, \
481 complain_overflow_signed, bfd_elf_generic_reloc, \
482 #name, FALSE, 0, 0xffff, TRUE)
483
484 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0),
485 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0),
486 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16),
487 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16),
488 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32),
489 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32),
490
491 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0),
492 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0),
493
494 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PLT_PCREL, 0),
495 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PLT_PCREL, 0),
496 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PLT_PCREL, 16),
497 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PLT_PCREL, 16),
498 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PLT_PCREL, 32),
499 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PLT_PCREL, 32),
500
501 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_GOT, 0),
502 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_GOT, 0),
503 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_GOT, 16),
504 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_GOT, 16),
505
506 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PLT_PCREL, 48),
507 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PLT_PCREL, 48),
508
509 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_GD, 0),
510 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_GD, 0),
511
512 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_LE, 0),
513 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_LE, 0),
514 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE, 0),
515 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE, 0),
516 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE, 16),
517 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE, 16),
518
519 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD, 0),
520 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD, 0),
521 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD, 16),
522 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD, 16),
523 EMPTY_HOWTO (90),
524 EMPTY_HOWTO (91),
525
526 #define TILEGX_IMM16_HOWTO_TLS_IE(name, rshift) \
527 HOWTO (name, rshift, 1, 16, FALSE, 0, \
528 complain_overflow_dont, bfd_elf_generic_reloc, \
529 #name, FALSE, 0, 0xffff, TRUE)
530
531 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X0_HW0_TLS_IE, 0),
532 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X1_HW0_TLS_IE, 0),
533
534 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL, 0),
535 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL, 0),
536 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL, 16),
537 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL, 16),
538 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL, 32),
539 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL, 32),
540
541 #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \
542 HOWTO (name, rshift, 1, 16, FALSE, 0, \
543 complain_overflow_signed, bfd_elf_generic_reloc, \
544 #name, FALSE, 0, 0xffff, TRUE)
545
546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0),
547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0),
548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16),
549 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16),
550 EMPTY_HOWTO (104),
551 EMPTY_HOWTO (105),
552
553 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont,
554 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64",
555 FALSE, 0, 0, TRUE),
556 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
557 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64",
558 FALSE, 0, -1, TRUE),
559 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont,
560 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64",
561 FALSE, 0, 0, TRUE),
562
563 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
564 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32",
565 FALSE, 0, 0, TRUE),
566 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield,
567 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32",
568 FALSE, 0, -1, TRUE),
569 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
570 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32",
571 FALSE, 0, 0, TRUE),
572
573 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */
574 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 27, /* bitsize */
577 TRUE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_signed,/* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_TILEGX_TLS_GD_CALL", /* name */
582 FALSE, /* partial_inplace */
583 0, /* src_mask */
584 -1, /* dst_mask */
585 TRUE), /* pcrel_offset */
586
587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8),
588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8),
589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8),
590 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8),
591 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8),
592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8),
593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8),
594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8),
595 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8),
596 };
597
598 static reloc_howto_type tilegx_elf_howto_table2 [] =
599 {
600 /* GNU extension to record C++ vtable hierarchy */
601 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */
602 0, /* rightshift */
603 4, /* size (0 = byte, 1 = short, 2 = long) */
604 0, /* bitsize */
605 FALSE, /* pc_relative */
606 0, /* bitpos */
607 complain_overflow_dont, /* complain_on_overflow */
608 NULL, /* special_function */
609 "R_TILEGX_GNU_VTINHERIT", /* name */
610 FALSE, /* partial_inplace */
611 0, /* src_mask */
612 0, /* dst_mask */
613 FALSE), /* pcrel_offset */
614
615 /* GNU extension to record C++ vtable member usage */
616 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */
617 0, /* rightshift */
618 4, /* size (0 = byte, 1 = short, 2 = long) */
619 0, /* bitsize */
620 FALSE, /* pc_relative */
621 0, /* bitpos */
622 complain_overflow_dont, /* complain_on_overflow */
623 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
624 "R_TILEGX_GNU_VTENTRY", /* name */
625 FALSE, /* partial_inplace */
626 0, /* src_mask */
627 0, /* dst_mask */
628 FALSE), /* pcrel_offset */
629
630 };
631 \f
632 /* Map BFD reloc types to TILEGX ELF reloc types. */
633
634 typedef struct tilegx_reloc_map
635 {
636 bfd_reloc_code_real_type bfd_reloc_val;
637 unsigned int tilegx_reloc_val;
638 reloc_howto_type * table;
639 } reloc_map;
640
641 static const reloc_map tilegx_reloc_map [] =
642 {
643 #define TH_REMAP(bfd, tilegx) \
644 { bfd, tilegx, tilegx_elf_howto_table },
645
646 /* Standard relocations. */
647 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE)
648 TH_REMAP (BFD_RELOC_64, R_TILEGX_64)
649 TH_REMAP (BFD_RELOC_32, R_TILEGX_32)
650 TH_REMAP (BFD_RELOC_16, R_TILEGX_16)
651 TH_REMAP (BFD_RELOC_8, R_TILEGX_8)
652 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL)
653 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL)
654 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL)
655 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL)
656
657 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t)
658
659 /* Custom relocations. */
660 SIMPLE_REMAP (TILEGX_HW0)
661 SIMPLE_REMAP (TILEGX_HW1)
662 SIMPLE_REMAP (TILEGX_HW2)
663 SIMPLE_REMAP (TILEGX_HW3)
664 SIMPLE_REMAP (TILEGX_HW0_LAST)
665 SIMPLE_REMAP (TILEGX_HW1_LAST)
666 SIMPLE_REMAP (TILEGX_HW2_LAST)
667 SIMPLE_REMAP (TILEGX_COPY)
668 SIMPLE_REMAP (TILEGX_GLOB_DAT)
669 SIMPLE_REMAP (TILEGX_JMP_SLOT)
670 SIMPLE_REMAP (TILEGX_RELATIVE)
671 SIMPLE_REMAP (TILEGX_BROFF_X1)
672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1)
673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT)
674 SIMPLE_REMAP (TILEGX_IMM8_X0)
675 SIMPLE_REMAP (TILEGX_IMM8_Y0)
676 SIMPLE_REMAP (TILEGX_IMM8_X1)
677 SIMPLE_REMAP (TILEGX_IMM8_Y1)
678 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1)
679 SIMPLE_REMAP (TILEGX_MT_IMM14_X1)
680 SIMPLE_REMAP (TILEGX_MF_IMM14_X1)
681 SIMPLE_REMAP (TILEGX_MMSTART_X0)
682 SIMPLE_REMAP (TILEGX_MMEND_X0)
683 SIMPLE_REMAP (TILEGX_SHAMT_X0)
684 SIMPLE_REMAP (TILEGX_SHAMT_X1)
685 SIMPLE_REMAP (TILEGX_SHAMT_Y0)
686 SIMPLE_REMAP (TILEGX_SHAMT_Y1)
687 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0)
688 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0)
689 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1)
690 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1)
691 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2)
692 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2)
693 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3)
694 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3)
695 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST)
696 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST)
697 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST)
698 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST)
699 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST)
700 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST)
701 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL)
702 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL)
703 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL)
704 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL)
705 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL)
706 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL)
707 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL)
708 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL)
709 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL)
710 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL)
711 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL)
712 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL)
713 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL)
714 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL)
715 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT)
716 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT)
717 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL)
718 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL)
719 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL)
720 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL)
721 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL)
722 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL)
723 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT)
724 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT)
725 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT)
726 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT)
727 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL)
728 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL)
729 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD)
730 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD)
731 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE)
732 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE)
733 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE)
734 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE)
735 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE)
736 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
737 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD)
738 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD)
739 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD)
740 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD)
741 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE)
742 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE)
743 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL)
744 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL)
745 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL)
746 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL)
747 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL)
748 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL)
749 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE)
750 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE)
751 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE)
752 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE)
753
754 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64)
755 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64)
756 SIMPLE_REMAP (TILEGX_TLS_TPOFF64)
757
758 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32)
759 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32)
760 SIMPLE_REMAP (TILEGX_TLS_TPOFF32)
761
762 SIMPLE_REMAP (TILEGX_TLS_GD_CALL)
763 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD)
764 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD)
765 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD)
766 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD)
767 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD)
768 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD)
769 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD)
770 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD)
771 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD)
772
773 #undef SIMPLE_REMAP
774 #undef TH_REMAP
775
776 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 },
777 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 },
778 };
779
780
781
782 /* TILEGX ELF linker hash entry. */
783
784 struct tilegx_elf_link_hash_entry
785 {
786 struct elf_link_hash_entry elf;
787
788 /* Track dynamic relocs copied for this symbol. */
789 struct elf_dyn_relocs *dyn_relocs;
790
791 #define GOT_UNKNOWN 0
792 #define GOT_NORMAL 1
793 #define GOT_TLS_GD 2
794 #define GOT_TLS_IE 4
795 unsigned char tls_type;
796 };
797
798 #define tilegx_elf_hash_entry(ent) \
799 ((struct tilegx_elf_link_hash_entry *)(ent))
800
801 struct _bfd_tilegx_elf_obj_tdata
802 {
803 struct elf_obj_tdata root;
804
805 /* tls_type for each local got entry. */
806 char *local_got_tls_type;
807 };
808
809 #define _bfd_tilegx_elf_tdata(abfd) \
810 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any)
811
812 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \
813 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type)
814
815 #define is_tilegx_elf(bfd) \
816 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
817 && elf_tdata (bfd) != NULL \
818 && elf_object_id (bfd) == TILEGX_ELF_DATA)
819
820 #include "elf/common.h"
821 #include "elf/internal.h"
822
823 struct tilegx_elf_link_hash_table
824 {
825 struct elf_link_hash_table elf;
826
827 int bytes_per_word;
828 int word_align_power;
829 int bytes_per_rela;
830 int dtpmod_reloc;
831 int dtpoff_reloc;
832 int tpoff_reloc;
833 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
834 bfd_vma (*r_symndx) (bfd_vma);
835 void (*put_word) (bfd *, bfd_vma, void *);
836 const char *dynamic_interpreter;
837
838 /* Whether LE transition has been disabled for some of the
839 sections. */
840 bfd_boolean disable_le_transition;
841
842 /* Small local sym to section mapping cache. */
843 struct sym_cache sym_cache;
844 };
845
846
847 /* Get the Tile ELF linker hash table from a link_info structure. */
848 #define tilegx_elf_hash_table(p) \
849 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
850 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL)
851
852 #ifdef BFD64
853 static bfd_vma
854 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
855 bfd_vma rel_index,
856 bfd_vma type)
857 {
858 return ELF64_R_INFO (rel_index, type);
859 }
860
861 static bfd_vma
862 tilegx_elf_r_symndx_64 (bfd_vma r_info)
863 {
864 return ELF64_R_SYM (r_info);
865 }
866
867 static void
868 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
869 {
870 bfd_put_64 (abfd, val, ptr);
871 }
872 #endif /* BFD64 */
873
874 static bfd_vma
875 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
876 bfd_vma rel_index,
877 bfd_vma type)
878 {
879 return ELF32_R_INFO (rel_index, type);
880 }
881
882 static bfd_vma
883 tilegx_elf_r_symndx_32 (bfd_vma r_info)
884 {
885 return ELF32_R_SYM (r_info);
886 }
887
888 static void
889 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
890 {
891 bfd_put_32 (abfd, val, ptr);
892 }
893
894 reloc_howto_type *
895 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
896 bfd_reloc_code_real_type code)
897 {
898 unsigned int i;
899
900 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;)
901 {
902 const reloc_map * entry;
903
904 entry = tilegx_reloc_map + i;
905
906 if (entry->bfd_reloc_val == code)
907 return entry->table + (entry->tilegx_reloc_val
908 - entry->table[0].type);
909 }
910
911 return NULL;
912 }
913
914 reloc_howto_type *
915 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
916 const char *r_name)
917 {
918 unsigned int i;
919
920 for (i = 0;
921 i < (sizeof (tilegx_elf_howto_table)
922 / sizeof (tilegx_elf_howto_table[0]));
923 i++)
924 if (tilegx_elf_howto_table[i].name != NULL
925 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
926 return &tilegx_elf_howto_table[i];
927
928 return NULL;
929 }
930
931 void
932 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
933 arelent *cache_ptr,
934 Elf_Internal_Rela *dst)
935 {
936 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
937
938 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
939 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
940 else if (r_type - R_TILEGX_GNU_VTINHERIT
941 <= (unsigned int) R_TILEGX_GNU_VTENTRY)
942 cache_ptr->howto
943 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
944 else
945 abort ();
946 }
947
948 typedef tilegx_bundle_bits (*tilegx_create_func)(int);
949
950 static const tilegx_create_func reloc_to_create_func[] =
951 {
952 /* The first twenty relocation types don't correspond to operands */
953 NULL,
954 NULL,
955 NULL,
956 NULL,
957 NULL,
958 NULL,
959 NULL,
960 NULL,
961 NULL,
962 NULL,
963 NULL,
964 NULL,
965 NULL,
966 NULL,
967 NULL,
968 NULL,
969 NULL,
970 NULL,
971 NULL,
972 NULL,
973
974 /* The remaining relocations are used for immediate operands */
975 create_BrOff_X1,
976 create_JumpOff_X1,
977 create_JumpOff_X1,
978 create_Imm8_X0,
979 create_Imm8_Y0,
980 create_Imm8_X1,
981 create_Imm8_Y1,
982 create_Dest_Imm8_X1,
983 create_MT_Imm14_X1,
984 create_MF_Imm14_X1,
985 create_BFStart_X0,
986 create_BFEnd_X0,
987 create_ShAmt_X0,
988 create_ShAmt_X1,
989 create_ShAmt_Y0,
990 create_ShAmt_Y1,
991 create_Imm16_X0,
992 create_Imm16_X1,
993 create_Imm16_X0,
994 create_Imm16_X1,
995 create_Imm16_X0,
996 create_Imm16_X1,
997 create_Imm16_X0,
998 create_Imm16_X1,
999 create_Imm16_X0,
1000 create_Imm16_X1,
1001 create_Imm16_X0,
1002 create_Imm16_X1,
1003 create_Imm16_X0,
1004 create_Imm16_X1,
1005 create_Imm16_X0,
1006 create_Imm16_X1,
1007 create_Imm16_X0,
1008 create_Imm16_X1,
1009 create_Imm16_X0,
1010 create_Imm16_X1,
1011 create_Imm16_X0,
1012 create_Imm16_X1,
1013 create_Imm16_X0,
1014 create_Imm16_X1,
1015 create_Imm16_X0,
1016 create_Imm16_X1,
1017 create_Imm16_X0,
1018 create_Imm16_X1,
1019 create_Imm16_X0,
1020 create_Imm16_X1,
1021 create_Imm16_X0,
1022 create_Imm16_X1,
1023 create_Imm16_X0,
1024 create_Imm16_X1,
1025 create_Imm16_X0,
1026 create_Imm16_X1,
1027 create_Imm16_X0,
1028 create_Imm16_X1,
1029 create_Imm16_X0,
1030 create_Imm16_X1,
1031 create_Imm16_X0,
1032 create_Imm16_X1,
1033 create_Imm16_X0,
1034 create_Imm16_X1,
1035 create_Imm16_X0,
1036 create_Imm16_X1,
1037 create_Imm16_X0,
1038 create_Imm16_X1,
1039 create_Imm16_X0,
1040 create_Imm16_X1,
1041 create_Imm16_X0,
1042 create_Imm16_X1,
1043 create_Imm16_X0,
1044 create_Imm16_X1,
1045 NULL,
1046 NULL,
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 };
1060
1061 static void
1062 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
1063 {
1064 const struct elf_backend_data *bed;
1065 bfd_byte *loc;
1066
1067 bed = get_elf_backend_data (abfd);
1068 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
1069 bed->s->swap_reloca_out (abfd, rel, loc);
1070 }
1071
1072 /* PLT/GOT stuff */
1073
1074 /* The procedure linkage table starts with the following header:
1075
1076 ld_add r28, r27, 8
1077 ld r27, r27
1078 {
1079 jr r27
1080 info 10 ## SP not offset, return PC in LR
1081 }
1082
1083 Subsequent entries are the following, jumping to the header at the end:
1084
1085 {
1086 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET>
1087 lnk r26
1088 }
1089 1:
1090 {
1091 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1092 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1093 }
1094 {
1095 add r28, r26, r28
1096 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1097 }
1098 {
1099 add r27, r26, r27
1100 ld r28, r28
1101 info 10 ## SP not offset, return PC in LR
1102 }
1103 {
1104 shl16insli r29, zero, MY_PLT_INDEX
1105 jr r28
1106 }
1107
1108 This code sequence lets the code at at the start of the PLT determine
1109 which PLT entry was executed by examining 'r29'.
1110
1111 Note that MY_PLT_INDEX skips over the header entries, so the first
1112 actual jump table entry has index zero.
1113
1114 If the offset fits in 16 bits,
1115
1116 lnk r26
1117 1:
1118 {
1119 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1120 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1121 }
1122 {
1123 shl16insli r29, zero, MY_PLT_INDEX
1124 ld r28, r28
1125 }
1126 {
1127 add r27, r26, r27
1128 jr r28
1129 }
1130 info 10 ## SP not offset, return PC in LR
1131
1132 For the purpose of backtracing, the procedure linkage table ends with the
1133 following tail entry:
1134
1135 info 10 ## SP not offset, return PC in LR
1136
1137 The 32-bit versions are similar, with ld4s replacing ld, and offsets into
1138 the GOT being multiples of 4 instead of 8.
1139
1140 */
1141
1142 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1143 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1144 #define PLT_TAIL_SIZE_IN_BUNDLES 1
1145
1146 #define PLT_HEADER_SIZE \
1147 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1148 #define PLT_ENTRY_SIZE \
1149 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1150 #define PLT_TAIL_SIZE \
1151 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1152
1153 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab)
1154
1155 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab))
1156
1157 static const bfd_byte
1158 tilegx64_plt0_entry[PLT_HEADER_SIZE] =
1159 {
1160 0x00, 0x30, 0x48, 0x51,
1161 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */
1162 0x00, 0x30, 0xbc, 0x35,
1163 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */
1164 0xff, 0xaf, 0x30, 0x40,
1165 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1166 };
1167
1168 static const bfd_byte
1169 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] =
1170 {
1171 0xdc, 0x0f, 0x00, 0x10,
1172 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1173 0xdb, 0x0f, 0x00, 0x10,
1174 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1175 0x9c, 0xc6, 0x0d, 0xd0,
1176 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1177 0x9b, 0xb6, 0xc5, 0xad,
1178 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1179 0xdd, 0x0f, 0x00, 0x70,
1180 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1181 };
1182
1183 static const bfd_byte
1184 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] =
1185 {
1186 0x00, 0x30, 0x48, 0x51,
1187 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1188 0x9c, 0x06, 0x00, 0x90,
1189 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1190 0xdd, 0x0f, 0x00, 0x70,
1191 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */
1192 0x9b, 0xb6, 0x0d, 0x50,
1193 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1194 0x00, 0x30, 0x48, 0xd1,
1195 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1196 };
1197
1198 /* Reuse an existing info 10 bundle. */
1199 static const bfd_byte *const tilegx64_plt_tail_entry =
1200 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1201
1202 static const bfd_byte
1203 tilegx32_plt0_entry[PLT_HEADER_SIZE] =
1204 {
1205 0x00, 0x30, 0x48, 0x51,
1206 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */
1207 0x00, 0x30, 0xbc, 0x35,
1208 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */
1209 0xff, 0xaf, 0x30, 0x40,
1210 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1211 };
1212
1213 static const bfd_byte
1214 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] =
1215 {
1216 0xdc, 0x0f, 0x00, 0x10,
1217 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1218 0xdb, 0x0f, 0x00, 0x10,
1219 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1220 0x9c, 0xc6, 0x0d, 0xd0,
1221 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1222 0x9b, 0xb6, 0xc5, 0xad,
1223 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */
1224 0xdd, 0x0f, 0x00, 0x70,
1225 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1226 };
1227
1228 static const bfd_byte
1229 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] =
1230 {
1231 0x00, 0x30, 0x48, 0x51,
1232 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1233 0x9c, 0x06, 0x00, 0x90,
1234 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1235 0xdd, 0x0f, 0x00, 0x70,
1236 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */
1237 0x9b, 0xb6, 0x0d, 0x50,
1238 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1239 0x00, 0x30, 0x48, 0xd1,
1240 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1241 };
1242
1243 /* Reuse an existing info 10 bundle. */
1244 static const bfd_byte *const tilegx32_plt_tail_entry =
1245 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1246
1247 static int
1248 tilegx_plt_entry_build (bfd *output_bfd,
1249 struct tilegx_elf_link_hash_table *htab,
1250 asection *splt, asection *sgotplt,
1251 bfd_vma offset, bfd_vma *r_offset)
1252 {
1253 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
1254 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab)
1255 + GOTPLT_HEADER_SIZE (htab));
1256 tilegx_bundle_bits *pc;
1257
1258 /* Compute the distance from the got entry to the lnk. */
1259 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1260 + sgotplt->output_offset
1261 + got_offset
1262 - splt->output_section->vma
1263 - splt->output_offset
1264 - offset
1265 - TILEGX_BUNDLE_SIZE_IN_BYTES;
1266
1267 /* Compute the distance to GOTPLT[0]. */
1268 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1269
1270 /* Check whether we can use the short plt entry with 16-bit offset. */
1271 bfd_boolean short_plt_entry =
1272 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1273
1274 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *)
1275 (ABI_64_P (output_bfd) ?
1276 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) :
1277 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry));
1278
1279 /* Copy the plt entry template. */
1280 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE);
1281
1282 /* Write the immediate offsets. */
1283 pc = (tilegx_bundle_bits *)(splt->contents + offset);
1284
1285 if (short_plt_entry)
1286 {
1287 /* { lnk r28 } */
1288 pc++;
1289
1290 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */
1291 *pc++ |= create_Imm16_X0 (dist_got_entry)
1292 | create_Imm16_X1 (dist_got0);
1293
1294 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */
1295 *pc++ |= create_Imm16_X0 (plt_index);
1296 }
1297 else
1298 {
1299 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */
1300 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16);
1301
1302 /* { moveli r27, &GOTPLT[0] ;
1303 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */
1304 *pc++ |= create_Imm16_X0 (dist_got0 >> 16)
1305 | create_Imm16_X1 (dist_got_entry);
1306
1307 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */
1308 *pc++ |= create_Imm16_X1 (dist_got0);
1309
1310 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1311 pc++;
1312
1313 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */
1314 *pc++ |= create_Imm16_X0 (plt_index);
1315 }
1316
1317 /* Set the relocation offset. */
1318 *r_offset = got_offset;
1319
1320 return plt_index;
1321 }
1322
1323 /* Create an entry in an TILEGX ELF linker hash table. */
1324
1325 static struct bfd_hash_entry *
1326 link_hash_newfunc (struct bfd_hash_entry *entry,
1327 struct bfd_hash_table *table, const char *string)
1328 {
1329 /* Allocate the structure if it has not already been allocated by a
1330 subclass. */
1331 if (entry == NULL)
1332 {
1333 entry =
1334 bfd_hash_allocate (table,
1335 sizeof (struct tilegx_elf_link_hash_entry));
1336 if (entry == NULL)
1337 return entry;
1338 }
1339
1340 /* Call the allocation method of the superclass. */
1341 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1342 if (entry != NULL)
1343 {
1344 struct tilegx_elf_link_hash_entry *eh;
1345
1346 eh = (struct tilegx_elf_link_hash_entry *) entry;
1347 eh->dyn_relocs = NULL;
1348 eh->tls_type = GOT_UNKNOWN;
1349 }
1350
1351 return entry;
1352 }
1353
1354 /* Create a TILEGX ELF linker hash table. */
1355
1356 struct bfd_link_hash_table *
1357 tilegx_elf_link_hash_table_create (bfd *abfd)
1358 {
1359 struct tilegx_elf_link_hash_table *ret;
1360 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table);
1361
1362 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1363 if (ret == NULL)
1364 return NULL;
1365
1366 #ifdef BFD64
1367 if (ABI_64_P (abfd))
1368 {
1369 ret->bytes_per_word = 8;
1370 ret->word_align_power = 3;
1371 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1372 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1373 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1374 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1375 ret->r_info = tilegx_elf_r_info_64;
1376 ret->r_symndx = tilegx_elf_r_symndx_64;
1377 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1378 ret->put_word = tilegx_put_word_64;
1379 }
1380 else
1381 #endif
1382 {
1383 ret->bytes_per_word = 4;
1384 ret->word_align_power = 2;
1385 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1386 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1387 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1388 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1389 ret->r_info = tilegx_elf_r_info_32;
1390 ret->r_symndx = tilegx_elf_r_symndx_32;
1391 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1392 ret->put_word = tilegx_put_word_32;
1393 }
1394
1395 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1396 sizeof (struct tilegx_elf_link_hash_entry),
1397 TILEGX_ELF_DATA))
1398 {
1399 free (ret);
1400 return NULL;
1401 }
1402
1403 return &ret->elf.root;
1404 }
1405
1406 /* Create the .got section. */
1407
1408 static bfd_boolean
1409 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1410 {
1411 flagword flags;
1412 asection *s, *s_got;
1413 struct elf_link_hash_entry *h;
1414 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1415 struct elf_link_hash_table *htab = elf_hash_table (info);
1416
1417 /* This function may be called more than once. */
1418 if (htab->sgot != NULL)
1419 return TRUE;
1420
1421 flags = bed->dynamic_sec_flags;
1422
1423 s = bfd_make_section_anyway_with_flags (abfd,
1424 (bed->rela_plts_and_copies_p
1425 ? ".rela.got" : ".rel.got"),
1426 (bed->dynamic_sec_flags
1427 | SEC_READONLY));
1428 if (s == NULL
1429 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1430 return FALSE;
1431 htab->srelgot = s;
1432
1433 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
1434 if (s == NULL
1435 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1436 return FALSE;
1437 htab->sgot = s;
1438
1439 /* The first bit of the global offset table is the header. */
1440 s->size += bed->got_header_size;
1441
1442 if (bed->want_got_plt)
1443 {
1444 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
1445 if (s == NULL
1446 || !bfd_set_section_alignment (abfd, s,
1447 bed->s->log_file_align))
1448 return FALSE;
1449 htab->sgotplt = s;
1450
1451 /* Reserve room for the header. */
1452 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1453 }
1454
1455 if (bed->want_got_sym)
1456 {
1457 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1458 section. We don't do this in the linker script because we don't want
1459 to define the symbol if we are not creating a global offset
1460 table. */
1461 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1462 "_GLOBAL_OFFSET_TABLE_");
1463 elf_hash_table (info)->hgot = h;
1464 if (h == NULL)
1465 return FALSE;
1466 }
1467
1468 return TRUE;
1469 }
1470
1471 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1472 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1473 hash table. */
1474
1475 bfd_boolean
1476 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1477 struct bfd_link_info *info)
1478 {
1479 if (!tilegx_elf_create_got_section (dynobj, info))
1480 return FALSE;
1481
1482 return _bfd_elf_create_dynamic_sections (dynobj, info);
1483 }
1484
1485 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1486
1487 void
1488 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1489 struct elf_link_hash_entry *dir,
1490 struct elf_link_hash_entry *ind)
1491 {
1492 struct tilegx_elf_link_hash_entry *edir, *eind;
1493
1494 edir = (struct tilegx_elf_link_hash_entry *) dir;
1495 eind = (struct tilegx_elf_link_hash_entry *) ind;
1496
1497 if (eind->dyn_relocs != NULL)
1498 {
1499 if (edir->dyn_relocs != NULL)
1500 {
1501 struct elf_dyn_relocs **pp;
1502 struct elf_dyn_relocs *p;
1503
1504 /* Add reloc counts against the indirect sym to the direct sym
1505 list. Merge any entries against the same section. */
1506 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1507 {
1508 struct elf_dyn_relocs *q;
1509
1510 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1511 if (q->sec == p->sec)
1512 {
1513 q->pc_count += p->pc_count;
1514 q->count += p->count;
1515 *pp = p->next;
1516 break;
1517 }
1518 if (q == NULL)
1519 pp = &p->next;
1520 }
1521 *pp = edir->dyn_relocs;
1522 }
1523
1524 edir->dyn_relocs = eind->dyn_relocs;
1525 eind->dyn_relocs = NULL;
1526 }
1527
1528 if (ind->root.type == bfd_link_hash_indirect
1529 && dir->got.refcount <= 0)
1530 {
1531 edir->tls_type = eind->tls_type;
1532 eind->tls_type = GOT_UNKNOWN;
1533 }
1534 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1535 }
1536
1537 static int
1538 tilegx_tls_translate_to_le (int r_type)
1539 {
1540 switch (r_type)
1541 {
1542 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1543 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1544 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1545
1546 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1547 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1548 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1549
1550 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1551 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1552 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1553
1554 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1555 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1556 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1557
1558 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1559 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1560 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1561
1562 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1563 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1564 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1565 }
1566 return r_type;
1567 }
1568
1569 static int
1570 tilegx_tls_translate_to_ie (int r_type)
1571 {
1572 switch (r_type)
1573 {
1574 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1575 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1576 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1577
1578 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1579 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1580 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1581
1582 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1583 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1584 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1585
1586 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1587 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1588 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1589
1590 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1591 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1592 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1593
1594 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1595 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1596 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1597 }
1598 return r_type;
1599 }
1600
1601 static int
1602 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1603 int is_local, bfd_boolean disable_le_transition)
1604 {
1605 if (!bfd_link_executable (info))
1606 return r_type;
1607
1608 if (is_local && !disable_le_transition)
1609 return tilegx_tls_translate_to_le (r_type);
1610 else
1611 return tilegx_tls_translate_to_ie (r_type);
1612 }
1613
1614 /* Look through the relocs for a section during the first phase, and
1615 allocate space in the global offset table or procedure linkage
1616 table. */
1617
1618 bfd_boolean
1619 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1620 asection *sec, const Elf_Internal_Rela *relocs)
1621 {
1622 struct tilegx_elf_link_hash_table *htab;
1623 Elf_Internal_Shdr *symtab_hdr;
1624 struct elf_link_hash_entry **sym_hashes;
1625 const Elf_Internal_Rela *rel;
1626 const Elf_Internal_Rela *rel_end;
1627 asection *sreloc;
1628 int num_relocs;
1629 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE;
1630
1631 if (bfd_link_relocatable (info))
1632 return TRUE;
1633
1634 htab = tilegx_elf_hash_table (info);
1635 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1636 sym_hashes = elf_sym_hashes (abfd);
1637
1638 sreloc = NULL;
1639
1640 num_relocs = sec->reloc_count;
1641
1642 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1643
1644 if (htab->elf.dynobj == NULL)
1645 htab->elf.dynobj = abfd;
1646
1647 rel_end = relocs + num_relocs;
1648
1649 /* Check whether to do optimization to transform TLS GD/IE
1650 referehces to TLS LE. We disable it if we're linking with old
1651 TLS code sequences that do not support such optimization. Old
1652 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1653 no tls_add relocations. */
1654 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1655 {
1656 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1657 switch (r_type)
1658 {
1659 case R_TILEGX_TLS_GD_CALL:
1660 case R_TILEGX_TLS_IE_LOAD:
1661 has_tls_gd_or_ie = TRUE;
1662 break;
1663 case R_TILEGX_IMM8_X0_TLS_ADD:
1664 case R_TILEGX_IMM8_Y0_TLS_ADD:
1665 case R_TILEGX_IMM8_X1_TLS_ADD:
1666 case R_TILEGX_IMM8_Y1_TLS_ADD:
1667 has_tls_add = TRUE;
1668 break;
1669 }
1670 }
1671
1672 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1673 htab->disable_le_transition |= sec->sec_flg0;
1674
1675 for (rel = relocs; rel < rel_end; rel++)
1676 {
1677 unsigned int r_type;
1678 unsigned int r_symndx;
1679 struct elf_link_hash_entry *h;
1680 int tls_type;
1681
1682 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1683 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1684
1685 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1686 {
1687 /* xgettext:c-format */
1688 _bfd_error_handler (_("%B: bad symbol index: %d"),
1689 abfd, r_symndx);
1690 return FALSE;
1691 }
1692
1693 if (r_symndx < symtab_hdr->sh_info)
1694 h = NULL;
1695 else
1696 {
1697 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1698 while (h->root.type == bfd_link_hash_indirect
1699 || h->root.type == bfd_link_hash_warning)
1700 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1701 }
1702
1703 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1704 sec->sec_flg0);
1705 switch (r_type)
1706 {
1707 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1708 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1709 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1710 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1711 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1712 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1713 if (!bfd_link_executable (info))
1714 goto r_tilegx_plt32;
1715 break;
1716
1717 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1718 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1719 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1720 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1721 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1722 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1723 BFD_ASSERT (bfd_link_pic (info));
1724 tls_type = GOT_TLS_GD;
1725 goto have_got_reference;
1726
1727 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1728 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1729 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1730 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1731 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1732 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1733 tls_type = GOT_TLS_IE;
1734 if (!bfd_link_executable (info))
1735 info->flags |= DF_STATIC_TLS;
1736 goto have_got_reference;
1737
1738 case R_TILEGX_IMM16_X0_HW0_GOT:
1739 case R_TILEGX_IMM16_X1_HW0_GOT:
1740 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1741 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1742 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1743 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1744 tls_type = GOT_NORMAL;
1745 /* Fall Through */
1746
1747 have_got_reference:
1748 /* This symbol requires a global offset table entry. */
1749 {
1750 int old_tls_type;
1751
1752 if (h != NULL)
1753 {
1754 h->got.refcount += 1;
1755 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1756 }
1757 else
1758 {
1759 bfd_signed_vma *local_got_refcounts;
1760
1761 /* This is a global offset table entry for a local symbol. */
1762 local_got_refcounts = elf_local_got_refcounts (abfd);
1763 if (local_got_refcounts == NULL)
1764 {
1765 bfd_size_type size;
1766
1767 size = symtab_hdr->sh_info;
1768 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1769 local_got_refcounts = ((bfd_signed_vma *)
1770 bfd_zalloc (abfd, size));
1771 if (local_got_refcounts == NULL)
1772 return FALSE;
1773 elf_local_got_refcounts (abfd) = local_got_refcounts;
1774 _bfd_tilegx_elf_local_got_tls_type (abfd)
1775 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1776 }
1777 local_got_refcounts[r_symndx] += 1;
1778 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1779 }
1780
1781 /* If a TLS symbol is accessed using IE at least once,
1782 there is no point to use dynamic model for it. */
1783 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1784 && (old_tls_type != GOT_TLS_GD
1785 || tls_type != GOT_TLS_IE))
1786 {
1787 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1788 tls_type = old_tls_type;
1789 else
1790 {
1791 _bfd_error_handler
1792 /* xgettext:c-format */
1793 (_("%B: `%s' accessed both as normal and thread local symbol"),
1794 abfd, h ? h->root.root.string : "<local>");
1795 return FALSE;
1796 }
1797 }
1798
1799 if (old_tls_type != tls_type)
1800 {
1801 if (h != NULL)
1802 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1803 else
1804 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1805 }
1806 }
1807
1808 if (htab->elf.sgot == NULL)
1809 {
1810 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1811 return FALSE;
1812 }
1813 break;
1814
1815 case R_TILEGX_TLS_GD_CALL:
1816 if (!bfd_link_executable (info))
1817 {
1818 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1819 against __tls_get_addr. */
1820 struct bfd_link_hash_entry *bh = NULL;
1821 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1822 "__tls_get_addr", 0,
1823 bfd_und_section_ptr, 0,
1824 NULL, FALSE, FALSE,
1825 &bh))
1826 return FALSE;
1827 h = (struct elf_link_hash_entry *) bh;
1828 }
1829 else
1830 break;
1831 /* Fall through */
1832
1833 case R_TILEGX_JUMPOFF_X1_PLT:
1834 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
1835 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
1836 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
1837 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
1838 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
1839 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
1840 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
1841 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
1842 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
1843 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
1844 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
1845 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
1846 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
1847 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
1848 /* This symbol requires a procedure linkage table entry. We
1849 actually build the entry in adjust_dynamic_symbol,
1850 because this might be a case of linking PIC code without
1851 linking in any dynamic objects, in which case we don't
1852 need to generate a procedure linkage table after all. */
1853
1854 if (h != NULL)
1855 {
1856 h->needs_plt = 1;
1857 h->plt.refcount += 1;
1858 }
1859 break;
1860
1861 case R_TILEGX_64_PCREL:
1862 case R_TILEGX_32_PCREL:
1863 case R_TILEGX_16_PCREL:
1864 case R_TILEGX_8_PCREL:
1865 case R_TILEGX_IMM16_X0_HW0_PCREL:
1866 case R_TILEGX_IMM16_X1_HW0_PCREL:
1867 case R_TILEGX_IMM16_X0_HW1_PCREL:
1868 case R_TILEGX_IMM16_X1_HW1_PCREL:
1869 case R_TILEGX_IMM16_X0_HW2_PCREL:
1870 case R_TILEGX_IMM16_X1_HW2_PCREL:
1871 case R_TILEGX_IMM16_X0_HW3_PCREL:
1872 case R_TILEGX_IMM16_X1_HW3_PCREL:
1873 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1874 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1875 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1876 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1877 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1878 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1879 if (h != NULL)
1880 h->non_got_ref = 1;
1881
1882 if (h != NULL
1883 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1884 break;
1885 /* Fall through. */
1886
1887 case R_TILEGX_64:
1888 case R_TILEGX_32:
1889 case R_TILEGX_16:
1890 case R_TILEGX_8:
1891 case R_TILEGX_HW0:
1892 case R_TILEGX_HW1:
1893 case R_TILEGX_HW2:
1894 case R_TILEGX_HW3:
1895 case R_TILEGX_HW0_LAST:
1896 case R_TILEGX_HW1_LAST:
1897 case R_TILEGX_HW2_LAST:
1898 case R_TILEGX_COPY:
1899 case R_TILEGX_GLOB_DAT:
1900 case R_TILEGX_JMP_SLOT:
1901 case R_TILEGX_RELATIVE:
1902 case R_TILEGX_BROFF_X1:
1903 case R_TILEGX_JUMPOFF_X1:
1904 case R_TILEGX_IMM8_X0:
1905 case R_TILEGX_IMM8_Y0:
1906 case R_TILEGX_IMM8_X1:
1907 case R_TILEGX_IMM8_Y1:
1908 case R_TILEGX_DEST_IMM8_X1:
1909 case R_TILEGX_MT_IMM14_X1:
1910 case R_TILEGX_MF_IMM14_X1:
1911 case R_TILEGX_MMSTART_X0:
1912 case R_TILEGX_MMEND_X0:
1913 case R_TILEGX_SHAMT_X0:
1914 case R_TILEGX_SHAMT_X1:
1915 case R_TILEGX_SHAMT_Y0:
1916 case R_TILEGX_SHAMT_Y1:
1917 case R_TILEGX_IMM16_X0_HW0:
1918 case R_TILEGX_IMM16_X1_HW0:
1919 case R_TILEGX_IMM16_X0_HW1:
1920 case R_TILEGX_IMM16_X1_HW1:
1921 case R_TILEGX_IMM16_X0_HW2:
1922 case R_TILEGX_IMM16_X1_HW2:
1923 case R_TILEGX_IMM16_X0_HW3:
1924 case R_TILEGX_IMM16_X1_HW3:
1925 case R_TILEGX_IMM16_X0_HW0_LAST:
1926 case R_TILEGX_IMM16_X1_HW0_LAST:
1927 case R_TILEGX_IMM16_X0_HW1_LAST:
1928 case R_TILEGX_IMM16_X1_HW1_LAST:
1929 case R_TILEGX_IMM16_X0_HW2_LAST:
1930 case R_TILEGX_IMM16_X1_HW2_LAST:
1931 if (h != NULL)
1932 h->non_got_ref = 1;
1933
1934 r_tilegx_plt32:
1935 if (h != NULL && !bfd_link_pic (info))
1936 {
1937 /* We may need a .plt entry if the function this reloc
1938 refers to is in a shared lib. */
1939 h->plt.refcount += 1;
1940 }
1941
1942 /* If we are creating a shared library, and this is a reloc
1943 against a global symbol, or a non PC relative reloc
1944 against a local symbol, then we need to copy the reloc
1945 into the shared library. However, if we are linking with
1946 -Bsymbolic, we do not need to copy a reloc against a
1947 global symbol which is defined in an object we are
1948 including in the link (i.e., DEF_REGULAR is set). At
1949 this point we have not seen all the input files, so it is
1950 possible that DEF_REGULAR is not set now but will be set
1951 later (it is never cleared). In case of a weak definition,
1952 DEF_REGULAR may be cleared later by a strong definition in
1953 a shared library. We account for that possibility below by
1954 storing information in the relocs_copied field of the hash
1955 table entry. A similar situation occurs when creating
1956 shared libraries and symbol visibility changes render the
1957 symbol local.
1958
1959 If on the other hand, we are creating an executable, we
1960 may need to keep relocations for symbols satisfied by a
1961 dynamic library if we manage to avoid copy relocs for the
1962 symbol. */
1963 if ((bfd_link_pic (info)
1964 && (sec->flags & SEC_ALLOC) != 0
1965 && (! tilegx_elf_howto_table[r_type].pc_relative
1966 || (h != NULL
1967 && (! info->symbolic
1968 || h->root.type == bfd_link_hash_defweak
1969 || !h->def_regular))))
1970 || (!bfd_link_pic (info)
1971 && (sec->flags & SEC_ALLOC) != 0
1972 && h != NULL
1973 && (h->root.type == bfd_link_hash_defweak
1974 || !h->def_regular)))
1975 {
1976 struct elf_dyn_relocs *p;
1977 struct elf_dyn_relocs **head;
1978
1979 /* When creating a shared object, we must copy these
1980 relocs into the output file. We create a reloc
1981 section in dynobj and make room for the reloc. */
1982 if (sreloc == NULL)
1983 {
1984 sreloc = _bfd_elf_make_dynamic_reloc_section
1985 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
1986 /*rela?*/ TRUE);
1987
1988 if (sreloc == NULL)
1989 return FALSE;
1990 }
1991
1992 /* If this is a global symbol, we count the number of
1993 relocations we need for this symbol. */
1994 if (h != NULL)
1995 head =
1996 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs;
1997 else
1998 {
1999 /* Track dynamic relocs needed for local syms too.
2000 We really need local syms available to do this
2001 easily. Oh well. */
2002
2003 asection *s;
2004 void *vpp;
2005 Elf_Internal_Sym *isym;
2006
2007 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2008 abfd, r_symndx);
2009 if (isym == NULL)
2010 return FALSE;
2011
2012 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2013 if (s == NULL)
2014 s = sec;
2015
2016 vpp = &elf_section_data (s)->local_dynrel;
2017 head = (struct elf_dyn_relocs **) vpp;
2018 }
2019
2020 p = *head;
2021 if (p == NULL || p->sec != sec)
2022 {
2023 bfd_size_type amt = sizeof *p;
2024 p = ((struct elf_dyn_relocs *)
2025 bfd_alloc (htab->elf.dynobj, amt));
2026 if (p == NULL)
2027 return FALSE;
2028 p->next = *head;
2029 *head = p;
2030 p->sec = sec;
2031 p->count = 0;
2032 p->pc_count = 0;
2033 }
2034
2035 p->count += 1;
2036 if (tilegx_elf_howto_table[r_type].pc_relative)
2037 p->pc_count += 1;
2038 }
2039
2040 break;
2041
2042 case R_TILEGX_GNU_VTINHERIT:
2043 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2044 return FALSE;
2045 break;
2046
2047 case R_TILEGX_GNU_VTENTRY:
2048 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2049 return FALSE;
2050 break;
2051
2052 default:
2053 break;
2054 }
2055 }
2056
2057 return TRUE;
2058 }
2059
2060 \f
2061 asection *
2062 tilegx_elf_gc_mark_hook (asection *sec,
2063 struct bfd_link_info *info,
2064 Elf_Internal_Rela *rel,
2065 struct elf_link_hash_entry *h,
2066 Elf_Internal_Sym *sym)
2067 {
2068 if (h != NULL)
2069 {
2070 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2071 {
2072 case R_TILEGX_GNU_VTINHERIT:
2073 case R_TILEGX_GNU_VTENTRY:
2074 return NULL;
2075 }
2076 }
2077
2078 /* FIXME: The test here, in check_relocs and in relocate_section
2079 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
2080 if (bfd_link_pic (info))
2081 {
2082 struct bfd_link_hash_entry *bh;
2083
2084 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2085 {
2086 case R_TILEGX_TLS_GD_CALL:
2087 /* This reloc implicitly references __tls_get_addr. We know
2088 another reloc will reference the same symbol as the one
2089 on this reloc, so the real symbol and section will be
2090 gc marked when processing the other reloc. That lets
2091 us handle __tls_get_addr here. */
2092 bh = NULL;
2093 if (! _bfd_generic_link_add_one_symbol (info, sec->owner,
2094 "__tls_get_addr", 0,
2095 bfd_und_section_ptr,
2096 0, NULL, FALSE,
2097 FALSE, &bh))
2098 return NULL;
2099 h = (struct elf_link_hash_entry *) bh;
2100 BFD_ASSERT (h != NULL);
2101 h->mark = 1;
2102 if (h->is_weakalias)
2103 weakdef (h)->mark = 1;
2104 sym = NULL;
2105 }
2106 }
2107
2108 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2109 }
2110
2111 /* Find dynamic relocs for H that apply to read-only sections. */
2112
2113 static asection *
2114 readonly_dynrelocs (struct elf_link_hash_entry *h)
2115 {
2116 struct elf_dyn_relocs *p;
2117
2118 for (p = tilegx_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
2119 {
2120 asection *s = p->sec->output_section;
2121
2122 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2123 return p->sec;
2124 }
2125 return NULL;
2126 }
2127
2128 /* Adjust a symbol defined by a dynamic object and referenced by a
2129 regular object. The current definition is in some section of the
2130 dynamic object, but we're not including those sections. We have to
2131 change the definition to something the rest of the link can
2132 understand. */
2133
2134 bfd_boolean
2135 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2136 struct elf_link_hash_entry *h)
2137 {
2138 struct tilegx_elf_link_hash_table *htab;
2139 bfd *dynobj;
2140 asection *s, *srel;
2141
2142 htab = tilegx_elf_hash_table (info);
2143 BFD_ASSERT (htab != NULL);
2144
2145 dynobj = htab->elf.dynobj;
2146
2147 /* Make sure we know what is going on here. */
2148 BFD_ASSERT (dynobj != NULL
2149 && (h->needs_plt
2150 || h->is_weakalias
2151 || (h->def_dynamic
2152 && h->ref_regular
2153 && !h->def_regular)));
2154
2155 /* If this is a function, put it in the procedure linkage table. We
2156 will fill in the contents of the procedure linkage table later
2157 (although we could actually do it here). */
2158 if (h->type == STT_FUNC || h->needs_plt)
2159 {
2160 if (h->plt.refcount <= 0
2161 || SYMBOL_CALLS_LOCAL (info, h)
2162 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2163 && h->root.type == bfd_link_hash_undefweak))
2164 {
2165 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2166 reloc in an input file, but the symbol was never referred
2167 to by a dynamic object, or if all references were garbage
2168 collected. In such a case, we don't actually need to build
2169 a procedure linkage table, and we can just do a
2170 R_TILEGX_JUMPOFF_X1 relocation instead. */
2171 h->plt.offset = (bfd_vma) -1;
2172 h->needs_plt = 0;
2173 }
2174
2175 return TRUE;
2176 }
2177 else
2178 h->plt.offset = (bfd_vma) -1;
2179
2180 /* If this is a weak symbol, and there is a real definition, the
2181 processor independent code will have arranged for us to see the
2182 real definition first, and we can just use the same value. */
2183 if (h->is_weakalias)
2184 {
2185 struct elf_link_hash_entry *def = weakdef (h);
2186 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2187 h->root.u.def.section = def->root.u.def.section;
2188 h->root.u.def.value = def->root.u.def.value;
2189 return TRUE;
2190 }
2191
2192 /* This is a reference to a symbol defined by a dynamic object which
2193 is not a function. */
2194
2195 /* If we are creating a shared library, we must presume that the
2196 only references to the symbol are via the global offset table.
2197 For such cases we need not do anything here; the relocations will
2198 be handled correctly by relocate_section. */
2199 if (bfd_link_pic (info))
2200 return TRUE;
2201
2202 /* If there are no references to this symbol that do not use the
2203 GOT, we don't need to generate a copy reloc. */
2204 if (!h->non_got_ref)
2205 return TRUE;
2206
2207 /* If -z nocopyreloc was given, we won't generate them either. */
2208 if (info->nocopyreloc)
2209 {
2210 h->non_got_ref = 0;
2211 return TRUE;
2212 }
2213
2214 /* If we don't find any dynamic relocs in read-only sections, then
2215 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2216 if (!readonly_dynrelocs (h))
2217 {
2218 h->non_got_ref = 0;
2219 return TRUE;
2220 }
2221
2222 /* We must allocate the symbol in our .dynbss section, which will
2223 become part of the .bss section of the executable. There will be
2224 an entry for this symbol in the .dynsym section. The dynamic
2225 object will contain position independent code, so all references
2226 from the dynamic object to this symbol will go through the global
2227 offset table. The dynamic linker will use the .dynsym entry to
2228 determine the address it must put in the global offset table, so
2229 both the dynamic object and the regular object will refer to the
2230 same memory location for the variable. */
2231
2232 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2233 to copy the initial value out of the dynamic object and into the
2234 runtime process image. We need to remember the offset into the
2235 .rel.bss section we are going to use. */
2236 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2237 {
2238 s = htab->elf.sdynrelro;
2239 srel = htab->elf.sreldynrelro;
2240 }
2241 else
2242 {
2243 s = htab->elf.sdynbss;
2244 srel = htab->elf.srelbss;
2245 }
2246 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2247 {
2248 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2249 h->needs_copy = 1;
2250 }
2251
2252 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2253 }
2254
2255 /* Allocate space in .plt, .got and associated reloc sections for
2256 dynamic relocs. */
2257
2258 static bfd_boolean
2259 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2260 {
2261 struct bfd_link_info *info;
2262 struct tilegx_elf_link_hash_table *htab;
2263 struct tilegx_elf_link_hash_entry *eh;
2264 struct elf_dyn_relocs *p;
2265
2266 if (h->root.type == bfd_link_hash_indirect)
2267 return TRUE;
2268
2269 info = (struct bfd_link_info *) inf;
2270 htab = tilegx_elf_hash_table (info);
2271 BFD_ASSERT (htab != NULL);
2272
2273 if (htab->elf.dynamic_sections_created
2274 && h->plt.refcount > 0)
2275 {
2276 /* Make sure this symbol is output as a dynamic symbol.
2277 Undefined weak syms won't yet be marked as dynamic. */
2278 if (h->dynindx == -1
2279 && !h->forced_local)
2280 {
2281 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2282 return FALSE;
2283 }
2284
2285 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2286 {
2287 asection *s = htab->elf.splt;
2288
2289 /* Allocate room for the header and tail. */
2290 if (s->size == 0)
2291 {
2292 s->size = PLT_ENTRY_SIZE;
2293 }
2294
2295 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE;
2296
2297 /* If this symbol is not defined in a regular file, and we are
2298 not generating a shared library, then set the symbol to this
2299 location in the .plt. This is required to make function
2300 pointers compare as equal between the normal executable and
2301 the shared library. */
2302 if (! bfd_link_pic (info)
2303 && !h->def_regular)
2304 {
2305 h->root.u.def.section = s;
2306 h->root.u.def.value = h->plt.offset;
2307 }
2308
2309 /* Make room for this entry. */
2310 s->size += PLT_ENTRY_SIZE;
2311
2312 /* We also need to make an entry in the .got.plt section. */
2313 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2314
2315 /* We also need to make an entry in the .rela.plt section. */
2316 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2317 }
2318 else
2319 {
2320 h->plt.offset = (bfd_vma) -1;
2321 h->needs_plt = 0;
2322 }
2323 }
2324 else
2325 {
2326 h->plt.offset = (bfd_vma) -1;
2327 h->needs_plt = 0;
2328 }
2329
2330 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2331 requiring no TLS entry. */
2332 if (h->got.refcount > 0
2333 && !htab->disable_le_transition
2334 && bfd_link_executable (info)
2335 && h->dynindx == -1
2336 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2337 h->got.offset = (bfd_vma) -1;
2338 else if (h->got.refcount > 0)
2339 {
2340 asection *s;
2341 bfd_boolean dyn;
2342 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2343
2344 /* Make sure this symbol is output as a dynamic symbol.
2345 Undefined weak syms won't yet be marked as dynamic. */
2346 if (h->dynindx == -1
2347 && !h->forced_local)
2348 {
2349 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2350 return FALSE;
2351 }
2352
2353 s = htab->elf.sgot;
2354 h->got.offset = s->size;
2355 s->size += TILEGX_ELF_WORD_BYTES (htab);
2356 /* TLS_GD entries need 2 consecutive GOT slots. */
2357 if (tls_type == GOT_TLS_GD)
2358 s->size += TILEGX_ELF_WORD_BYTES (htab);
2359 dyn = htab->elf.dynamic_sections_created;
2360 /* TLS_IE needs one dynamic relocation,
2361 TLS_GD needs two if local symbol and two if global. */
2362 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2363 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2364 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2365 bfd_link_pic (info),
2366 h))
2367 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2368 }
2369 else
2370 h->got.offset = (bfd_vma) -1;
2371
2372 eh = (struct tilegx_elf_link_hash_entry *) h;
2373 if (eh->dyn_relocs == NULL)
2374 return TRUE;
2375
2376 /* In the shared -Bsymbolic case, discard space allocated for
2377 dynamic pc-relative relocs against symbols which turn out to be
2378 defined in regular objects. For the normal shared case, discard
2379 space for pc-relative relocs that have become local due to symbol
2380 visibility changes. */
2381
2382 if (bfd_link_pic (info))
2383 {
2384 if (SYMBOL_CALLS_LOCAL (info, h))
2385 {
2386 struct elf_dyn_relocs **pp;
2387
2388 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2389 {
2390 p->count -= p->pc_count;
2391 p->pc_count = 0;
2392 if (p->count == 0)
2393 *pp = p->next;
2394 else
2395 pp = &p->next;
2396 }
2397 }
2398
2399 /* Also discard relocs on undefined weak syms with non-default
2400 visibility. */
2401 if (eh->dyn_relocs != NULL
2402 && h->root.type == bfd_link_hash_undefweak)
2403 {
2404 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2405 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2406 eh->dyn_relocs = NULL;
2407
2408 /* Make sure undefined weak symbols are output as a dynamic
2409 symbol in PIEs. */
2410 else if (h->dynindx == -1
2411 && !h->forced_local)
2412 {
2413 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2414 return FALSE;
2415 }
2416 }
2417 }
2418 else
2419 {
2420 /* For the non-shared case, discard space for relocs against
2421 symbols which turn out to need copy relocs or are not
2422 dynamic. */
2423
2424 if (!h->non_got_ref
2425 && ((h->def_dynamic
2426 && !h->def_regular)
2427 || (htab->elf.dynamic_sections_created
2428 && (h->root.type == bfd_link_hash_undefweak
2429 || h->root.type == bfd_link_hash_undefined))))
2430 {
2431 /* Make sure this symbol is output as a dynamic symbol.
2432 Undefined weak syms won't yet be marked as dynamic. */
2433 if (h->dynindx == -1
2434 && !h->forced_local)
2435 {
2436 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2437 return FALSE;
2438 }
2439
2440 /* If that succeeded, we know we'll be keeping all the
2441 relocs. */
2442 if (h->dynindx != -1)
2443 goto keep;
2444 }
2445
2446 eh->dyn_relocs = NULL;
2447
2448 keep: ;
2449 }
2450
2451 /* Finally, allocate space. */
2452 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2453 {
2454 asection *sreloc = elf_section_data (p->sec)->sreloc;
2455 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2456 }
2457
2458 return TRUE;
2459 }
2460
2461 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2462 read-only sections. */
2463
2464 static bfd_boolean
2465 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
2466 {
2467 asection *sec;
2468
2469 if (h->root.type == bfd_link_hash_indirect)
2470 return TRUE;
2471
2472 sec = readonly_dynrelocs (h);
2473 if (sec != NULL)
2474 {
2475 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
2476
2477 info->flags |= DF_TEXTREL;
2478 info->callbacks->minfo
2479 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
2480 sec->owner, h->root.root.string, sec);
2481
2482 /* Not an error, just cut short the traversal. */
2483 return FALSE;
2484 }
2485 return TRUE;
2486 }
2487
2488 /* Return true if the dynamic symbol for a given section should be
2489 omitted when creating a shared library. */
2490
2491 bfd_boolean
2492 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2493 struct bfd_link_info *info,
2494 asection *p)
2495 {
2496 /* We keep the .got section symbol so that explicit relocations
2497 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2498 can be turned into relocations against the .got symbol. */
2499 if (strcmp (p->name, ".got") == 0)
2500 return FALSE;
2501
2502 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2503 }
2504
2505 bfd_boolean
2506 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2507 struct bfd_link_info *info)
2508 {
2509 struct tilegx_elf_link_hash_table *htab;
2510 bfd *dynobj;
2511 asection *s;
2512 bfd *ibfd;
2513
2514 htab = tilegx_elf_hash_table (info);
2515 BFD_ASSERT (htab != NULL);
2516 dynobj = htab->elf.dynobj;
2517 BFD_ASSERT (dynobj != NULL);
2518
2519 if (elf_hash_table (info)->dynamic_sections_created)
2520 {
2521 /* Set the contents of the .interp section to the interpreter. */
2522 if (bfd_link_executable (info) && !info->nointerp)
2523 {
2524 s = bfd_get_linker_section (dynobj, ".interp");
2525 BFD_ASSERT (s != NULL);
2526 s->size = strlen (htab->dynamic_interpreter) + 1;
2527 s->contents = (unsigned char *) htab->dynamic_interpreter;
2528 }
2529 }
2530
2531 /* Set up .got offsets for local syms, and space for local dynamic
2532 relocs. */
2533 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2534 {
2535 bfd_signed_vma *local_got;
2536 bfd_signed_vma *end_local_got;
2537 char *local_tls_type;
2538 bfd_size_type locsymcount;
2539 Elf_Internal_Shdr *symtab_hdr;
2540 asection *srel;
2541
2542 if (! is_tilegx_elf (ibfd))
2543 continue;
2544
2545 for (s = ibfd->sections; s != NULL; s = s->next)
2546 {
2547 struct elf_dyn_relocs *p;
2548
2549 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2550 {
2551 if (!bfd_is_abs_section (p->sec)
2552 && bfd_is_abs_section (p->sec->output_section))
2553 {
2554 /* Input section has been discarded, either because
2555 it is a copy of a linkonce section or due to
2556 linker script /DISCARD/, so we'll be discarding
2557 the relocs too. */
2558 }
2559 else if (p->count != 0)
2560 {
2561 srel = elf_section_data (p->sec)->sreloc;
2562 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2563 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2564 {
2565 info->flags |= DF_TEXTREL;
2566
2567 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
2568 p->sec->owner, p->sec);
2569 }
2570 }
2571 }
2572 }
2573
2574 local_got = elf_local_got_refcounts (ibfd);
2575 if (!local_got)
2576 continue;
2577
2578 symtab_hdr = &elf_symtab_hdr (ibfd);
2579 locsymcount = symtab_hdr->sh_info;
2580 end_local_got = local_got + locsymcount;
2581 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2582 s = htab->elf.sgot;
2583 srel = htab->elf.srelgot;
2584 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2585 {
2586 if (*local_got > 0)
2587 {
2588 *local_got = s->size;
2589 s->size += TILEGX_ELF_WORD_BYTES (htab);
2590 if (*local_tls_type == GOT_TLS_GD)
2591 s->size += TILEGX_ELF_WORD_BYTES (htab);
2592 if (bfd_link_pic (info)
2593 || *local_tls_type == GOT_TLS_GD
2594 || *local_tls_type == GOT_TLS_IE)
2595 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2596 }
2597 else
2598 *local_got = (bfd_vma) -1;
2599 }
2600 }
2601
2602 /* Allocate global sym .plt and .got entries, and space for global
2603 sym dynamic relocs. */
2604 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2605
2606 if (elf_hash_table (info)->dynamic_sections_created)
2607 {
2608 /* If the .got section is more than 0x8000 bytes, we add
2609 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2610 bit relocations have a greater chance of working. */
2611 if (htab->elf.sgot->size >= 0x8000
2612 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2613 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2614 }
2615
2616 if (htab->elf.sgotplt)
2617 {
2618 struct elf_link_hash_entry *got;
2619 got = elf_link_hash_lookup (elf_hash_table (info),
2620 "_GLOBAL_OFFSET_TABLE_",
2621 FALSE, FALSE, FALSE);
2622
2623 /* Don't allocate .got.plt section if there are no GOT nor PLT
2624 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2625 if ((got == NULL
2626 || !got->ref_regular_nonweak)
2627 && (htab->elf.sgotplt->size
2628 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2629 && (htab->elf.splt == NULL
2630 || htab->elf.splt->size == 0)
2631 && (htab->elf.sgot == NULL
2632 || (htab->elf.sgot->size
2633 == get_elf_backend_data (output_bfd)->got_header_size)))
2634 htab->elf.sgotplt->size = 0;
2635 }
2636
2637 /* The check_relocs and adjust_dynamic_symbol entry points have
2638 determined the sizes of the various dynamic sections. Allocate
2639 memory for them. */
2640 for (s = dynobj->sections; s != NULL; s = s->next)
2641 {
2642 if ((s->flags & SEC_LINKER_CREATED) == 0)
2643 continue;
2644
2645 if (s == htab->elf.splt
2646 || s == htab->elf.sgot
2647 || s == htab->elf.sgotplt
2648 || s == htab->elf.sdynbss
2649 || s == htab->elf.sdynrelro)
2650 {
2651 /* Strip this section if we don't need it; see the
2652 comment below. */
2653 }
2654 else if (strncmp (s->name, ".rela", 5) == 0)
2655 {
2656 if (s->size != 0)
2657 {
2658 /* We use the reloc_count field as a counter if we need
2659 to copy relocs into the output file. */
2660 s->reloc_count = 0;
2661 }
2662 }
2663 else
2664 {
2665 /* It's not one of our sections. */
2666 continue;
2667 }
2668
2669 if (s->size == 0)
2670 {
2671 /* If we don't need this section, strip it from the
2672 output file. This is mostly to handle .rela.bss and
2673 .rela.plt. We must create both sections in
2674 create_dynamic_sections, because they must be created
2675 before the linker maps input sections to output
2676 sections. The linker does that before
2677 adjust_dynamic_symbol is called, and it is that
2678 function which decides whether anything needs to go
2679 into these sections. */
2680 s->flags |= SEC_EXCLUDE;
2681 continue;
2682 }
2683
2684 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2685 continue;
2686
2687 /* Allocate memory for the section contents. Zero the memory
2688 for the benefit of .rela.plt, which has 4 unused entries
2689 at the beginning, and we don't want garbage. */
2690 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2691 if (s->contents == NULL)
2692 return FALSE;
2693 }
2694
2695 if (elf_hash_table (info)->dynamic_sections_created)
2696 {
2697 /* Add some entries to the .dynamic section. We fill in the
2698 values later, in tilegx_elf_finish_dynamic_sections, but we
2699 must add the entries now so that we get the correct size for
2700 the .dynamic section. The DT_DEBUG entry is filled in by the
2701 dynamic linker and used by the debugger. */
2702 #define add_dynamic_entry(TAG, VAL) \
2703 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2704
2705 if (bfd_link_executable (info))
2706 {
2707 if (!add_dynamic_entry (DT_DEBUG, 0))
2708 return FALSE;
2709 }
2710
2711 if (htab->elf.srelplt->size != 0)
2712 {
2713 if (!add_dynamic_entry (DT_PLTGOT, 0)
2714 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2715 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2716 || !add_dynamic_entry (DT_JMPREL, 0))
2717 return FALSE;
2718 }
2719
2720 if (!add_dynamic_entry (DT_RELA, 0)
2721 || !add_dynamic_entry (DT_RELASZ, 0)
2722 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab)))
2723 return FALSE;
2724
2725 /* If any dynamic relocs apply to a read-only section,
2726 then we need a DT_TEXTREL entry. */
2727 if ((info->flags & DF_TEXTREL) == 0)
2728 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
2729
2730 if (info->flags & DF_TEXTREL)
2731 {
2732 if (!add_dynamic_entry (DT_TEXTREL, 0))
2733 return FALSE;
2734 }
2735 }
2736 #undef add_dynamic_entry
2737
2738 return TRUE;
2739 }
2740 \f
2741 /* Return the base VMA address which should be subtracted from real addresses
2742 when resolving @dtpoff relocation.
2743 This is PT_TLS segment p_vaddr. */
2744
2745 static bfd_vma
2746 dtpoff_base (struct bfd_link_info *info)
2747 {
2748 /* If tls_sec is NULL, we should have signalled an error already. */
2749 if (elf_hash_table (info)->tls_sec == NULL)
2750 return 0;
2751 return elf_hash_table (info)->tls_sec->vma;
2752 }
2753
2754 /* Return the relocation value for @tpoff relocation. */
2755
2756 static bfd_vma
2757 tpoff (struct bfd_link_info *info, bfd_vma address)
2758 {
2759 struct elf_link_hash_table *htab = elf_hash_table (info);
2760
2761 /* If tls_sec is NULL, we should have signalled an error already. */
2762 if (htab->tls_sec == NULL)
2763 return 0;
2764
2765 return (address - htab->tls_sec->vma);
2766 }
2767
2768 /* Copy SIZE bits from FROM to TO at address ADDR. */
2769
2770 static void
2771 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2772 {
2773 int i;
2774 for (i = 0; i < size; i++)
2775 {
2776 int from_byte = (from + i) / 8;
2777 int from_bit = (from + i) % 8;
2778 int to_byte = (to + i) / 8;
2779 int to_bit = (to + i) % 8;
2780 bfd_byte to_mask = 1 << to_bit;
2781 addr[to_byte] = (addr[to_byte] & ~to_mask)
2782 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2783 }
2784 }
2785
2786 /* Replace the MASK bits in ADDR with those in INSN, for the next
2787 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2788
2789 static void
2790 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2791 const bfd_byte *insn)
2792 {
2793 int i;
2794 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2795 {
2796 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2797 }
2798 }
2799
2800 /* Mask to extract the bits corresponding to an instruction in a
2801 specific pipe of a bundle. */
2802 static const bfd_byte insn_mask_X1[] = {
2803 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
2804 };
2805
2806 /* Mask to extract the bits corresponding to an instruction in a
2807 specific pipe of a bundle, minus the destination operand and the
2808 first source operand. */
2809 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2810 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2811 };
2812
2813 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2814 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
2815 };
2816
2817 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2818 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2819 };
2820 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2821 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
2822 };
2823
2824 /* Mask to extract the bits corresponding to an instruction in a
2825 specific pipe of a bundle, minus the register operands. */
2826 static const bfd_byte insn_mask_X0_no_operand[] = {
2827 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
2828 };
2829
2830 static const bfd_byte insn_mask_X1_no_operand[] = {
2831 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
2832 };
2833
2834 static const bfd_byte insn_mask_Y0_no_operand[] = {
2835 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
2836 };
2837
2838 static const bfd_byte insn_mask_Y1_no_operand[] = {
2839 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
2840 };
2841
2842 /* Various instructions synthesized to support tls references. */
2843
2844 /* ld r0, r0 in the X1 pipe, used for tls ie. */
2845 static const bfd_byte insn_tls_ie_ld_X1[] = {
2846 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
2847 };
2848
2849 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
2850 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
2851 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
2852 };
2853
2854 /* add r0, r0, tp in various pipes, used for tls ie. */
2855 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2856 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
2857 };
2858 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2859 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
2860 };
2861
2862 /* addx r0, r0, tp in various pipes, used for tls ie. */
2863 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
2864 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
2865 };
2866 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
2867 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
2868 };
2869
2870 /* move r0, r0 in various pipes, used for tls gd. */
2871 static const bfd_byte insn_tls_gd_add_X0X1[] = {
2872 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
2873 };
2874 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
2875 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
2876 };
2877
2878 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
2879 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
2880
2881 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
2882 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
2883
2884 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
2885 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
2886
2887 /* Relocate an TILEGX ELF section.
2888
2889 The RELOCATE_SECTION function is called by the new ELF backend linker
2890 to handle the relocations for a section.
2891
2892 The relocs are always passed as Rela structures.
2893
2894 This function is responsible for adjusting the section contents as
2895 necessary, and (if generating a relocatable output file) adjusting
2896 the reloc addend as necessary.
2897
2898 This function does not have to worry about setting the reloc
2899 address or the reloc symbol index.
2900
2901 LOCAL_SYMS is a pointer to the swapped in local symbols.
2902
2903 LOCAL_SECTIONS is an array giving the section in the input file
2904 corresponding to the st_shndx field of each local symbol.
2905
2906 The global hash table entry for the global symbols can be found
2907 via elf_sym_hashes (input_bfd).
2908
2909 When generating relocatable output, this function must handle
2910 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2911 going to be the section symbol corresponding to the output
2912 section, which means that the addend must be adjusted
2913 accordingly. */
2914
2915 bfd_boolean
2916 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
2917 bfd *input_bfd, asection *input_section,
2918 bfd_byte *contents, Elf_Internal_Rela *relocs,
2919 Elf_Internal_Sym *local_syms,
2920 asection **local_sections)
2921 {
2922 struct tilegx_elf_link_hash_table *htab;
2923 Elf_Internal_Shdr *symtab_hdr;
2924 struct elf_link_hash_entry **sym_hashes;
2925 bfd_vma *local_got_offsets;
2926 bfd_vma got_base;
2927 asection *sreloc;
2928 Elf_Internal_Rela *rel;
2929 Elf_Internal_Rela *relend;
2930 int num_relocs;
2931
2932 htab = tilegx_elf_hash_table (info);
2933 BFD_ASSERT (htab != NULL);
2934 symtab_hdr = &elf_symtab_hdr (input_bfd);
2935 sym_hashes = elf_sym_hashes (input_bfd);
2936 local_got_offsets = elf_local_got_offsets (input_bfd);
2937
2938 if (elf_hash_table (info)->hgot == NULL)
2939 got_base = 0;
2940 else
2941 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2942
2943 sreloc = elf_section_data (input_section)->sreloc;
2944
2945 rel = relocs;
2946 num_relocs = input_section->reloc_count;
2947 relend = relocs + num_relocs;
2948 for (; rel < relend; rel++)
2949 {
2950 int r_type, tls_type;
2951 bfd_boolean is_tls_iele, is_tls_le;
2952 reloc_howto_type *howto;
2953 unsigned long r_symndx;
2954 struct elf_link_hash_entry *h;
2955 Elf_Internal_Sym *sym;
2956 tilegx_create_func create_func;
2957 asection *sec;
2958 bfd_vma relocation;
2959 bfd_reloc_status_type r;
2960 const char *name;
2961 bfd_vma off;
2962 bfd_boolean is_plt = FALSE;
2963 bfd_boolean resolved_to_zero;
2964 bfd_boolean unresolved_reloc;
2965
2966 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2967 if (r_type == R_TILEGX_GNU_VTINHERIT
2968 || r_type == R_TILEGX_GNU_VTENTRY)
2969 continue;
2970
2971 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
2972 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2973
2974 howto = tilegx_elf_howto_table + r_type;
2975
2976 /* This is a final link. */
2977 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2978 h = NULL;
2979 sym = NULL;
2980 sec = NULL;
2981 unresolved_reloc = FALSE;
2982 if (r_symndx < symtab_hdr->sh_info)
2983 {
2984 sym = local_syms + r_symndx;
2985 sec = local_sections[r_symndx];
2986 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2987 }
2988 else
2989 {
2990 bfd_boolean warned ATTRIBUTE_UNUSED;
2991 bfd_boolean ignored ATTRIBUTE_UNUSED;
2992
2993 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2994 r_symndx, symtab_hdr, sym_hashes,
2995 h, sec, relocation,
2996 unresolved_reloc, warned, ignored);
2997 if (warned)
2998 {
2999 /* To avoid generating warning messages about truncated
3000 relocations, set the relocation's address to be the same as
3001 the start of this section. */
3002 if (input_section->output_section != NULL)
3003 relocation = input_section->output_section->vma;
3004 else
3005 relocation = 0;
3006 }
3007 }
3008
3009 if (sec != NULL && discarded_section (sec))
3010 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3011 rel, 1, relend, howto, 0, contents);
3012
3013 if (bfd_link_relocatable (info))
3014 continue;
3015
3016 if (h != NULL)
3017 name = h->root.root.string;
3018 else
3019 {
3020 name = (bfd_elf_string_from_elf_section
3021 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3022 if (name == NULL || *name == '\0')
3023 name = bfd_section_name (input_bfd, sec);
3024 }
3025
3026 switch (r_type)
3027 {
3028 case R_TILEGX_TLS_GD_CALL:
3029 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3030 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3031 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3032 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3033 case R_TILEGX_IMM8_X0_TLS_ADD:
3034 case R_TILEGX_IMM8_Y0_TLS_ADD:
3035 case R_TILEGX_IMM8_X1_TLS_ADD:
3036 case R_TILEGX_IMM8_Y1_TLS_ADD:
3037 tls_type = GOT_UNKNOWN;
3038 if (h == NULL && local_got_offsets)
3039 tls_type =
3040 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3041 else if (h != NULL)
3042 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3043
3044 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE);
3045 is_tls_le = is_tls_iele && (!input_section->sec_flg0
3046 && bfd_link_executable (info)
3047 && (h == NULL || h->dynindx == -1));
3048
3049 if (r_type == R_TILEGX_TLS_GD_CALL)
3050 {
3051 if (is_tls_le)
3052 {
3053 /* GD -> LE */
3054 tilegx_replace_insn (contents + rel->r_offset,
3055 insn_mask_X1, insn_move_X0X1);
3056 continue;
3057 }
3058 else if (is_tls_iele)
3059 {
3060 /* GD -> IE */
3061 if (ABI_64_P (output_bfd))
3062 tilegx_replace_insn (contents + rel->r_offset,
3063 insn_mask_X1, insn_tls_ie_ld_X1);
3064 else
3065 tilegx_replace_insn (contents + rel->r_offset,
3066 insn_mask_X1, insn_tls_ie_ld4s_X1);
3067 continue;
3068 }
3069
3070 /* GD -> GD */
3071 h = (struct elf_link_hash_entry *)
3072 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3073 FALSE, TRUE);
3074 BFD_ASSERT (h != NULL);
3075 r_type = R_TILEGX_JUMPOFF_X1_PLT;
3076 howto = tilegx_elf_howto_table + r_type;
3077 }
3078 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3079 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
3080 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
3081 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
3082 {
3083 bfd_boolean is_pipe0 =
3084 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3085 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
3086 bfd_boolean is_X0X1 =
3087 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3088 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
3089 int dest_begin = is_pipe0 ? 0 : 31;
3090 int src_begin;
3091 const bfd_byte *insn;
3092 const bfd_byte *mask = NULL;
3093
3094 if (is_tls_le)
3095 {
3096 /* 1. copy dest operand into the first source operand.
3097 2. change the opcode to "move". */
3098 src_begin = is_pipe0 ? 6 : 37;
3099 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
3100
3101 switch (r_type)
3102 {
3103 case R_TILEGX_IMM8_X0_TLS_ADD:
3104 mask = insn_mask_X0_no_dest_no_srca;
3105 break;
3106 case R_TILEGX_IMM8_X1_TLS_ADD:
3107 mask = insn_mask_X1_no_dest_no_srca;
3108 break;
3109 case R_TILEGX_IMM8_Y0_TLS_ADD:
3110 mask = insn_mask_Y0_no_dest_no_srca;
3111 break;
3112 case R_TILEGX_IMM8_Y1_TLS_ADD:
3113 mask = insn_mask_Y1_no_dest_no_srca;
3114 break;
3115 }
3116 }
3117 else
3118 {
3119 /* 1. copy dest operand into the second source operand.
3120 2. change the opcode to "add". */
3121 src_begin = is_pipe0 ? 12 : 43;
3122 if (ABI_64_P (output_bfd))
3123 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3124 else
3125 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3126
3127 switch (r_type)
3128 {
3129 case R_TILEGX_IMM8_X0_TLS_ADD:
3130 mask = insn_mask_X0_no_operand;
3131 break;
3132 case R_TILEGX_IMM8_X1_TLS_ADD:
3133 mask = insn_mask_X1_no_operand;
3134 break;
3135 case R_TILEGX_IMM8_Y0_TLS_ADD:
3136 mask = insn_mask_Y0_no_operand;
3137 break;
3138 case R_TILEGX_IMM8_Y1_TLS_ADD:
3139 mask = insn_mask_Y1_no_operand;
3140 break;
3141 }
3142 }
3143
3144 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3145 src_begin, 6);
3146 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3147
3148 continue;
3149 }
3150 else
3151 {
3152 const bfd_byte *mask = NULL;
3153 const bfd_byte *add_insn = NULL;
3154 bfd_boolean is_64bit = ABI_64_P (output_bfd);
3155
3156 switch (r_type)
3157 {
3158 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3159 add_insn = is_tls_iele
3160 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3161 : insn_tls_gd_add_X0X1;
3162 mask = insn_mask_X0_no_dest_no_srca;
3163 break;
3164 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3165 add_insn = is_tls_iele
3166 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3167 : insn_tls_gd_add_X0X1;
3168 mask = insn_mask_X1_no_dest_no_srca;
3169 break;
3170 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3171 add_insn = is_tls_iele
3172 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3173 : insn_tls_gd_add_Y0Y1;
3174 mask = insn_mask_Y0_no_dest_no_srca;
3175 break;
3176 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3177 add_insn = is_tls_iele
3178 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3179 : insn_tls_gd_add_Y0Y1;
3180 mask = insn_mask_Y1_no_dest_no_srca;
3181 break;
3182 }
3183
3184 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3185
3186 continue;
3187 }
3188 break;
3189 case R_TILEGX_TLS_IE_LOAD:
3190 if (!input_section->sec_flg0
3191 && bfd_link_executable (info)
3192 && (h == NULL || h->dynindx == -1))
3193 {
3194 /* IE -> LE */
3195 tilegx_replace_insn (contents + rel->r_offset,
3196 insn_mask_X1_no_dest_no_srca,
3197 insn_move_X0X1);
3198 }
3199 else
3200 {
3201 /* IE -> IE */
3202 if (ABI_64_P (output_bfd))
3203 tilegx_replace_insn (contents + rel->r_offset,
3204 insn_mask_X1_no_dest_no_srca,
3205 insn_tls_ie_ld_X1);
3206 else
3207 tilegx_replace_insn (contents + rel->r_offset,
3208 insn_mask_X1_no_dest_no_srca,
3209 insn_tls_ie_ld4s_X1);
3210 }
3211 continue;
3212 break;
3213 default:
3214 break;
3215 }
3216
3217 resolved_to_zero = (h != NULL
3218 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
3219
3220 switch (r_type)
3221 {
3222 case R_TILEGX_IMM16_X0_HW0_GOT:
3223 case R_TILEGX_IMM16_X1_HW0_GOT:
3224 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3225 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3226 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3227 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3228 /* Relocation is to the entry for this symbol in the global
3229 offset table. */
3230 if (htab->elf.sgot == NULL)
3231 abort ();
3232
3233 if (h != NULL)
3234 {
3235 bfd_boolean dyn;
3236
3237 off = h->got.offset;
3238 BFD_ASSERT (off != (bfd_vma) -1);
3239 dyn = elf_hash_table (info)->dynamic_sections_created;
3240
3241 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3242 bfd_link_pic (info),
3243 h)
3244 || (bfd_link_pic (info)
3245 && SYMBOL_REFERENCES_LOCAL (info, h)))
3246 {
3247 /* This is actually a static link, or it is a
3248 -Bsymbolic link and the symbol is defined
3249 locally, or the symbol was forced to be local
3250 because of a version file. We must initialize
3251 this entry in the global offset table. Since the
3252 offset must always be a multiple
3253 of 8 for 64-bit, we use the least significant bit
3254 to record whether we have initialized it already.
3255
3256 When doing a dynamic link, we create a .rela.got
3257 relocation entry to initialize the value. This
3258 is done in the finish_dynamic_symbol routine. */
3259 if ((off & 1) != 0)
3260 off &= ~1;
3261 else
3262 {
3263 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3264 htab->elf.sgot->contents + off);
3265 h->got.offset |= 1;
3266 }
3267 }
3268 else
3269 unresolved_reloc = FALSE;
3270 }
3271 else
3272 {
3273 BFD_ASSERT (local_got_offsets != NULL
3274 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3275
3276 off = local_got_offsets[r_symndx];
3277
3278 /* The offset must always be a multiple of 8 on 64-bit.
3279 We use the least significant bit to record
3280 whether we have already processed this entry. */
3281 if ((off & 1) != 0)
3282 off &= ~1;
3283 else
3284 {
3285 if (bfd_link_pic (info))
3286 {
3287 asection *s;
3288 Elf_Internal_Rela outrel;
3289
3290 /* We need to generate a R_TILEGX_RELATIVE reloc
3291 for the dynamic linker. */
3292 s = htab->elf.srelgot;
3293 BFD_ASSERT (s != NULL);
3294
3295 outrel.r_offset = (htab->elf.sgot->output_section->vma
3296 + htab->elf.sgot->output_offset
3297 + off);
3298 outrel.r_info =
3299 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3300 outrel.r_addend = relocation;
3301 relocation = 0;
3302 tilegx_elf_append_rela (output_bfd, s, &outrel);
3303 }
3304
3305 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3306 htab->elf.sgot->contents + off);
3307 local_got_offsets[r_symndx] |= 1;
3308 }
3309 }
3310 relocation = off - got_base;
3311 break;
3312
3313 case R_TILEGX_JUMPOFF_X1_PLT:
3314 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
3315 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
3316 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
3317 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
3318 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
3319 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
3320 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
3321 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
3322 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
3323 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
3324 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
3325 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
3326 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
3327 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
3328 /* Relocation is to the entry for this symbol in the
3329 procedure linkage table. */
3330 BFD_ASSERT (h != NULL);
3331
3332 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3333 {
3334 /* We didn't make a PLT entry for this symbol. This
3335 happens when statically linking PIC code, or when
3336 using -Bsymbolic. */
3337 break;
3338 }
3339
3340 relocation = (htab->elf.splt->output_section->vma
3341 + htab->elf.splt->output_offset
3342 + h->plt.offset);
3343 unresolved_reloc = FALSE;
3344 break;
3345
3346 case R_TILEGX_64_PCREL:
3347 case R_TILEGX_32_PCREL:
3348 case R_TILEGX_16_PCREL:
3349 case R_TILEGX_8_PCREL:
3350 case R_TILEGX_IMM16_X0_HW0_PCREL:
3351 case R_TILEGX_IMM16_X1_HW0_PCREL:
3352 case R_TILEGX_IMM16_X0_HW1_PCREL:
3353 case R_TILEGX_IMM16_X1_HW1_PCREL:
3354 case R_TILEGX_IMM16_X0_HW2_PCREL:
3355 case R_TILEGX_IMM16_X1_HW2_PCREL:
3356 case R_TILEGX_IMM16_X0_HW3_PCREL:
3357 case R_TILEGX_IMM16_X1_HW3_PCREL:
3358 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3359 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3360 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3361 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3362 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3363 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3364 if (h != NULL
3365 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3366 break;
3367 /* Fall through. */
3368 case R_TILEGX_64:
3369 case R_TILEGX_32:
3370 case R_TILEGX_16:
3371 case R_TILEGX_8:
3372 case R_TILEGX_HW0:
3373 case R_TILEGX_HW1:
3374 case R_TILEGX_HW2:
3375 case R_TILEGX_HW3:
3376 case R_TILEGX_HW0_LAST:
3377 case R_TILEGX_HW1_LAST:
3378 case R_TILEGX_HW2_LAST:
3379 case R_TILEGX_COPY:
3380 case R_TILEGX_GLOB_DAT:
3381 case R_TILEGX_JMP_SLOT:
3382 case R_TILEGX_RELATIVE:
3383 case R_TILEGX_BROFF_X1:
3384 case R_TILEGX_JUMPOFF_X1:
3385 case R_TILEGX_IMM8_X0:
3386 case R_TILEGX_IMM8_Y0:
3387 case R_TILEGX_IMM8_X1:
3388 case R_TILEGX_IMM8_Y1:
3389 case R_TILEGX_DEST_IMM8_X1:
3390 case R_TILEGX_MT_IMM14_X1:
3391 case R_TILEGX_MF_IMM14_X1:
3392 case R_TILEGX_MMSTART_X0:
3393 case R_TILEGX_MMEND_X0:
3394 case R_TILEGX_SHAMT_X0:
3395 case R_TILEGX_SHAMT_X1:
3396 case R_TILEGX_SHAMT_Y0:
3397 case R_TILEGX_SHAMT_Y1:
3398 case R_TILEGX_IMM16_X0_HW0:
3399 case R_TILEGX_IMM16_X1_HW0:
3400 case R_TILEGX_IMM16_X0_HW1:
3401 case R_TILEGX_IMM16_X1_HW1:
3402 case R_TILEGX_IMM16_X0_HW2:
3403 case R_TILEGX_IMM16_X1_HW2:
3404 case R_TILEGX_IMM16_X0_HW3:
3405 case R_TILEGX_IMM16_X1_HW3:
3406 case R_TILEGX_IMM16_X0_HW0_LAST:
3407 case R_TILEGX_IMM16_X1_HW0_LAST:
3408 case R_TILEGX_IMM16_X0_HW1_LAST:
3409 case R_TILEGX_IMM16_X1_HW1_LAST:
3410 case R_TILEGX_IMM16_X0_HW2_LAST:
3411 case R_TILEGX_IMM16_X1_HW2_LAST:
3412 if ((input_section->flags & SEC_ALLOC) == 0)
3413 break;
3414
3415 if ((bfd_link_pic (info)
3416 && (h == NULL
3417 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3418 && !resolved_to_zero)
3419 || h->root.type != bfd_link_hash_undefweak)
3420 && (! howto->pc_relative
3421 || !SYMBOL_CALLS_LOCAL (info, h)))
3422 || (!bfd_link_pic (info)
3423 && h != NULL
3424 && h->dynindx != -1
3425 && !h->non_got_ref
3426 && ((h->def_dynamic
3427 && !h->def_regular)
3428 || h->root.type == bfd_link_hash_undefweak
3429 || h->root.type == bfd_link_hash_undefined)))
3430 {
3431 Elf_Internal_Rela outrel;
3432 bfd_boolean skip, relocate = FALSE;
3433
3434 /* When generating a shared object, these relocations
3435 are copied into the output file to be resolved at run
3436 time. */
3437
3438 BFD_ASSERT (sreloc != NULL);
3439
3440 skip = FALSE;
3441
3442 outrel.r_offset =
3443 _bfd_elf_section_offset (output_bfd, info, input_section,
3444 rel->r_offset);
3445 if (outrel.r_offset == (bfd_vma) -1)
3446 skip = TRUE;
3447 else if (outrel.r_offset == (bfd_vma) -2)
3448 skip = TRUE, relocate = TRUE;
3449 outrel.r_offset += (input_section->output_section->vma
3450 + input_section->output_offset);
3451
3452 switch (r_type)
3453 {
3454 case R_TILEGX_64_PCREL:
3455 case R_TILEGX_32_PCREL:
3456 case R_TILEGX_16_PCREL:
3457 case R_TILEGX_8_PCREL:
3458 /* If the symbol is not dynamic, we should not keep
3459 a dynamic relocation. But an .rela.* slot has been
3460 allocated for it, output R_TILEGX_NONE.
3461 FIXME: Add code tracking needed dynamic relocs as
3462 e.g. i386 has. */
3463 if (h->dynindx == -1)
3464 skip = TRUE, relocate = TRUE;
3465 break;
3466 }
3467
3468 if (skip)
3469 memset (&outrel, 0, sizeof outrel);
3470 /* h->dynindx may be -1 if the symbol was marked to
3471 become local. */
3472 else if (h != NULL &&
3473 h->dynindx != -1
3474 && (! is_plt
3475 || !bfd_link_pic (info)
3476 || !SYMBOLIC_BIND (info, h)
3477 || !h->def_regular))
3478 {
3479 BFD_ASSERT (h->dynindx != -1);
3480 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3481 outrel.r_addend = rel->r_addend;
3482 }
3483 else
3484 {
3485 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3486 {
3487 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3488 R_TILEGX_RELATIVE);
3489 outrel.r_addend = relocation + rel->r_addend;
3490 }
3491 else
3492 {
3493 long indx;
3494
3495 outrel.r_addend = relocation + rel->r_addend;
3496
3497 if (is_plt)
3498 sec = htab->elf.splt;
3499
3500 if (bfd_is_abs_section (sec))
3501 indx = 0;
3502 else if (sec == NULL || sec->owner == NULL)
3503 {
3504 bfd_set_error (bfd_error_bad_value);
3505 return FALSE;
3506 }
3507 else
3508 {
3509 asection *osec;
3510
3511 /* We are turning this relocation into one
3512 against a section symbol. It would be
3513 proper to subtract the symbol's value,
3514 osec->vma, from the emitted reloc addend,
3515 but ld.so expects buggy relocs. */
3516 osec = sec->output_section;
3517 indx = elf_section_data (osec)->dynindx;
3518
3519 if (indx == 0)
3520 {
3521 osec = htab->elf.text_index_section;
3522 indx = elf_section_data (osec)->dynindx;
3523 }
3524
3525 /* FIXME: we really should be able to link non-pic
3526 shared libraries. */
3527 if (indx == 0)
3528 {
3529 BFD_FAIL ();
3530 _bfd_error_handler
3531 (_("%B: probably compiled without -fPIC?"),
3532 input_bfd);
3533 bfd_set_error (bfd_error_bad_value);
3534 return FALSE;
3535 }
3536 }
3537
3538 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3539 r_type);
3540 }
3541 }
3542
3543 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3544
3545 /* This reloc will be computed at runtime, so there's no
3546 need to do anything now. */
3547 if (! relocate)
3548 continue;
3549 }
3550 break;
3551
3552 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3553 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3554 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3555 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3556 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3557 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3558 if (!bfd_link_executable (info))
3559 {
3560 Elf_Internal_Rela outrel;
3561 bfd_boolean skip;
3562
3563 BFD_ASSERT (sreloc != NULL);
3564 skip = FALSE;
3565 outrel.r_offset =
3566 _bfd_elf_section_offset (output_bfd, info, input_section,
3567 rel->r_offset);
3568 if (outrel.r_offset == (bfd_vma) -1)
3569 skip = TRUE;
3570 else if (outrel.r_offset == (bfd_vma) -2)
3571 skip = TRUE;
3572 outrel.r_offset += (input_section->output_section->vma
3573 + input_section->output_offset);
3574 if (skip)
3575 memset (&outrel, 0, sizeof outrel);
3576 else
3577 {
3578 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3579 outrel.r_addend = relocation - dtpoff_base (info)
3580 + rel->r_addend;
3581 }
3582
3583 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3584 continue;
3585 }
3586 relocation = tpoff (info, relocation);
3587 break;
3588
3589 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3590 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3591 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3592 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3593 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3594 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3595 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3596 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3597 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3598 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3599 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3600 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3601 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3602 input_section->sec_flg0);
3603 tls_type = GOT_UNKNOWN;
3604 if (h == NULL && local_got_offsets)
3605 tls_type =
3606 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3607 else if (h != NULL)
3608 {
3609 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3610 if (bfd_link_executable (info)
3611 && h->dynindx == -1
3612 && tls_type == GOT_TLS_IE)
3613 r_type = (!input_section->sec_flg0
3614 ? tilegx_tls_translate_to_le (r_type)
3615 : tilegx_tls_translate_to_ie (r_type));
3616 }
3617
3618 if (tls_type == GOT_TLS_IE)
3619 r_type = tilegx_tls_translate_to_ie (r_type);
3620
3621 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3622 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3623 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3624 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3625 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3626 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3627 {
3628 relocation = tpoff (info, relocation);
3629 break;
3630 }
3631
3632 if (h != NULL)
3633 {
3634 off = h->got.offset;
3635 h->got.offset |= 1;
3636 }
3637 else
3638 {
3639 BFD_ASSERT (local_got_offsets != NULL);
3640 off = local_got_offsets[r_symndx];
3641 local_got_offsets[r_symndx] |= 1;
3642 }
3643
3644 if (htab->elf.sgot == NULL)
3645 abort ();
3646
3647 if ((off & 1) != 0)
3648 off &= ~1;
3649 else
3650 {
3651 Elf_Internal_Rela outrel;
3652 int indx = 0;
3653 bfd_boolean need_relocs = FALSE;
3654
3655 if (htab->elf.srelgot == NULL)
3656 abort ();
3657
3658 if (h != NULL)
3659 {
3660 bfd_boolean dyn;
3661 dyn = htab->elf.dynamic_sections_created;
3662
3663 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3664 bfd_link_pic (info),
3665 h)
3666 && (!bfd_link_pic (info)
3667 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3668 {
3669 indx = h->dynindx;
3670 }
3671 }
3672
3673 /* The GOT entries have not been initialized yet. Do it
3674 now, and emit any relocations. */
3675 if ((bfd_link_pic (info) || indx != 0)
3676 && (h == NULL
3677 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3678 || h->root.type != bfd_link_hash_undefweak))
3679 need_relocs = TRUE;
3680
3681 switch (r_type)
3682 {
3683 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3684 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3685 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3686 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3687 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3688 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3689 if (need_relocs) {
3690 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3691 htab->elf.sgot->contents + off);
3692 outrel.r_offset = (htab->elf.sgot->output_section->vma
3693 + htab->elf.sgot->output_offset + off);
3694 outrel.r_addend = 0;
3695 if (indx == 0)
3696 outrel.r_addend = relocation - dtpoff_base (info);
3697 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3698 TILEGX_ELF_TPOFF_RELOC (htab));
3699 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3700 } else {
3701 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3702 tpoff (info, relocation),
3703 htab->elf.sgot->contents + off);
3704 }
3705 break;
3706
3707 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3708 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3709 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3710 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3711 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3712 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3713 if (need_relocs) {
3714 outrel.r_offset = (htab->elf.sgot->output_section->vma
3715 + htab->elf.sgot->output_offset + off);
3716 outrel.r_addend = 0;
3717 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3718 TILEGX_ELF_DTPMOD_RELOC (htab));
3719 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3720 htab->elf.sgot->contents + off);
3721 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3722 if (indx == 0)
3723 {
3724 BFD_ASSERT (! unresolved_reloc);
3725 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3726 relocation - dtpoff_base (info),
3727 (htab->elf.sgot->contents + off +
3728 TILEGX_ELF_WORD_BYTES (htab)));
3729 }
3730 else
3731 {
3732 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3733 (htab->elf.sgot->contents + off +
3734 TILEGX_ELF_WORD_BYTES (htab)));
3735 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3736 TILEGX_ELF_DTPOFF_RELOC (htab));
3737 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3738 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3739 }
3740 }
3741
3742 else {
3743 /* If we are not emitting relocations for a
3744 general dynamic reference, then we must be in a
3745 static link or an executable link with the
3746 symbol binding locally. Mark it as belonging
3747 to module 1, the executable. */
3748 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3749 htab->elf.sgot->contents + off );
3750 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3751 relocation - dtpoff_base (info),
3752 htab->elf.sgot->contents + off +
3753 TILEGX_ELF_WORD_BYTES (htab));
3754 }
3755 break;
3756 }
3757 }
3758
3759 if (off >= (bfd_vma) -2)
3760 abort ();
3761
3762 relocation = off - got_base;
3763 unresolved_reloc = FALSE;
3764 howto = tilegx_elf_howto_table + r_type;
3765 break;
3766
3767 default:
3768 break;
3769 }
3770
3771 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3772 because such sections are not SEC_ALLOC and thus ld.so will
3773 not process them. */
3774 if (unresolved_reloc
3775 && !((input_section->flags & SEC_DEBUGGING) != 0
3776 && h->def_dynamic)
3777 && _bfd_elf_section_offset (output_bfd, info, input_section,
3778 rel->r_offset) != (bfd_vma) -1)
3779 _bfd_error_handler
3780 /* xgettext:c-format */
3781 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3782 input_bfd,
3783 input_section,
3784 rel->r_offset,
3785 howto->name,
3786 h->root.root.string);
3787
3788 r = bfd_reloc_continue;
3789
3790 /* Get the operand creation function, if any. */
3791 create_func = reloc_to_create_func[r_type];
3792 if (create_func == NULL)
3793 {
3794 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3795 contents, rel->r_offset,
3796 relocation, rel->r_addend);
3797 }
3798 else
3799 {
3800 if (howto->pc_relative)
3801 {
3802 relocation -=
3803 input_section->output_section->vma + input_section->output_offset;
3804 if (howto->pcrel_offset)
3805 relocation -= rel->r_offset;
3806 }
3807
3808 bfd_byte *data;
3809
3810 /* Add the relocation addend if any to the final target value */
3811 relocation += rel->r_addend;
3812
3813 /* Do basic range checking */
3814 r = bfd_check_overflow (howto->complain_on_overflow,
3815 howto->bitsize,
3816 howto->rightshift,
3817 TILEGX_ELF_WORD_BYTES (htab) * 8,
3818 relocation);
3819
3820 /*
3821 * Write the relocated value out into the raw section data.
3822 * Don't put a relocation out in the .rela section.
3823 */
3824 tilegx_bundle_bits mask = create_func(-1);
3825 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
3826
3827 /* Only touch bytes while the mask is not 0, so we
3828 don't write to out of bounds memory if this is actually
3829 a 16-bit switch instruction. */
3830 for (data = contents + rel->r_offset; mask != 0; data++)
3831 {
3832 bfd_byte byte_mask = (bfd_byte)mask;
3833 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3834 mask >>= 8;
3835 value >>= 8;
3836 }
3837 }
3838
3839 if (r != bfd_reloc_ok)
3840 {
3841 const char *msg = NULL;
3842
3843 switch (r)
3844 {
3845 case bfd_reloc_overflow:
3846 (*info->callbacks->reloc_overflow)
3847 (info, (h ? &h->root : NULL), name, howto->name,
3848 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3849 break;
3850
3851 case bfd_reloc_undefined:
3852 (*info->callbacks->undefined_symbol)
3853 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
3854 break;
3855
3856 case bfd_reloc_outofrange:
3857 msg = _("internal error: out of range error");
3858 break;
3859
3860 case bfd_reloc_notsupported:
3861 msg = _("internal error: unsupported relocation error");
3862 break;
3863
3864 case bfd_reloc_dangerous:
3865 msg = _("internal error: dangerous relocation");
3866 break;
3867
3868 default:
3869 msg = _("internal error: unknown error");
3870 break;
3871 }
3872
3873 if (msg)
3874 (*info->callbacks->warning) (info, msg, name, input_bfd,
3875 input_section, rel->r_offset);
3876 }
3877 }
3878
3879 return TRUE;
3880 }
3881
3882 /* Finish up dynamic symbol handling. We set the contents of various
3883 dynamic sections here. */
3884
3885 bfd_boolean
3886 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
3887 struct bfd_link_info *info,
3888 struct elf_link_hash_entry *h,
3889 Elf_Internal_Sym *sym)
3890 {
3891 struct tilegx_elf_link_hash_table *htab;
3892
3893 htab = tilegx_elf_hash_table (info);
3894 BFD_ASSERT (htab != NULL);
3895
3896 if (h->plt.offset != (bfd_vma) -1)
3897 {
3898 asection *splt;
3899 asection *srela;
3900 asection *sgotplt;
3901 Elf_Internal_Rela rela;
3902 bfd_byte *loc;
3903 bfd_vma r_offset;
3904 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
3905
3906
3907 int rela_index;
3908
3909 /* This symbol has an entry in the PLT. Set it up. */
3910
3911 BFD_ASSERT (h->dynindx != -1);
3912
3913 splt = htab->elf.splt;
3914 srela = htab->elf.srelplt;
3915 sgotplt = htab->elf.sgotplt;
3916
3917 if (splt == NULL || srela == NULL)
3918 abort ();
3919
3920 /* Fill in the entry in the procedure linkage table. */
3921 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
3922 h->plt.offset, &r_offset);
3923
3924 /* Fill in the entry in the global offset table, which initially points
3925 to the beginning of the plt. */
3926 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3927 splt->output_section->vma + splt->output_offset,
3928 sgotplt->contents + r_offset);
3929
3930 /* Fill in the entry in the .rela.plt section. */
3931 rela.r_offset = (sgotplt->output_section->vma
3932 + sgotplt->output_offset
3933 + r_offset);
3934 rela.r_addend = 0;
3935 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
3936
3937 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
3938 bed->s->swap_reloca_out (output_bfd, &rela, loc);
3939
3940 if (!h->def_regular)
3941 {
3942 /* Mark the symbol as undefined, rather than as defined in
3943 the .plt section. Leave the value alone. */
3944 sym->st_shndx = SHN_UNDEF;
3945 /* If the symbol is weak, we do need to clear the value.
3946 Otherwise, the PLT entry would provide a definition for
3947 the symbol even if the symbol wasn't defined anywhere,
3948 and so the symbol would never be NULL. */
3949 if (!h->ref_regular_nonweak)
3950 sym->st_value = 0;
3951 }
3952 }
3953
3954 if (h->got.offset != (bfd_vma) -1
3955 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3956 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3957 {
3958 asection *sgot;
3959 asection *srela;
3960 Elf_Internal_Rela rela;
3961
3962 /* This symbol has an entry in the GOT. Set it up. */
3963
3964 sgot = htab->elf.sgot;
3965 srela = htab->elf.srelgot;
3966 BFD_ASSERT (sgot != NULL && srela != NULL);
3967
3968 rela.r_offset = (sgot->output_section->vma
3969 + sgot->output_offset
3970 + (h->got.offset &~ (bfd_vma) 1));
3971
3972 /* If this is a -Bsymbolic link, and the symbol is defined
3973 locally, we just want to emit a RELATIVE reloc. Likewise if
3974 the symbol was forced to be local because of a version file.
3975 The entry in the global offset table will already have been
3976 initialized in the relocate_section function. */
3977 if (bfd_link_pic (info)
3978 && (info->symbolic || h->dynindx == -1)
3979 && h->def_regular)
3980 {
3981 asection *sec = h->root.u.def.section;
3982 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3983 rela.r_addend = (h->root.u.def.value
3984 + sec->output_section->vma
3985 + sec->output_offset);
3986 }
3987 else
3988 {
3989 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
3990 rela.r_addend = 0;
3991 }
3992
3993 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3994 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
3995 tilegx_elf_append_rela (output_bfd, srela, &rela);
3996 }
3997
3998 if (h->needs_copy)
3999 {
4000 asection *s;
4001 Elf_Internal_Rela rela;
4002
4003 /* This symbols needs a copy reloc. Set it up. */
4004 BFD_ASSERT (h->dynindx != -1);
4005
4006 if (h->root.u.def.section == htab->elf.sdynrelro)
4007 s = htab->elf.sreldynrelro;
4008 else
4009 s = htab->elf.srelbss;
4010 BFD_ASSERT (s != NULL);
4011
4012 rela.r_offset = (h->root.u.def.value
4013 + h->root.u.def.section->output_section->vma
4014 + h->root.u.def.section->output_offset);
4015 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
4016 rela.r_addend = 0;
4017 tilegx_elf_append_rela (output_bfd, s, &rela);
4018 }
4019
4020 /* Mark some specially defined symbols as absolute. */
4021 if (h == htab->elf.hdynamic
4022 || (h == htab->elf.hgot || h == htab->elf.hplt))
4023 sym->st_shndx = SHN_ABS;
4024
4025 return TRUE;
4026 }
4027
4028 /* Finish up the dynamic sections. */
4029
4030 static bfd_boolean
4031 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4032 bfd *dynobj, asection *sdyn,
4033 asection *splt ATTRIBUTE_UNUSED)
4034 {
4035 struct tilegx_elf_link_hash_table *htab;
4036 const struct elf_backend_data *bed;
4037 bfd_byte *dyncon, *dynconend;
4038 size_t dynsize;
4039
4040 htab = tilegx_elf_hash_table (info);
4041 BFD_ASSERT (htab != NULL);
4042 bed = get_elf_backend_data (output_bfd);
4043 dynsize = bed->s->sizeof_dyn;
4044 dynconend = sdyn->contents + sdyn->size;
4045
4046 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4047 {
4048 Elf_Internal_Dyn dyn;
4049 asection *s;
4050
4051 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4052
4053 switch (dyn.d_tag)
4054 {
4055 case DT_PLTGOT:
4056 s = htab->elf.sgotplt;
4057 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4058 break;
4059 case DT_JMPREL:
4060 s = htab->elf.srelplt;
4061 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4062 break;
4063 case DT_PLTRELSZ:
4064 s = htab->elf.srelplt;
4065 dyn.d_un.d_val = s->size;
4066 break;
4067 default:
4068 continue;
4069 }
4070
4071 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4072 }
4073 return TRUE;
4074 }
4075
4076 bfd_boolean
4077 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
4078 struct bfd_link_info *info)
4079 {
4080 bfd *dynobj;
4081 asection *sdyn;
4082 struct tilegx_elf_link_hash_table *htab;
4083 size_t pad_size;
4084
4085 htab = tilegx_elf_hash_table (info);
4086 BFD_ASSERT (htab != NULL);
4087 dynobj = htab->elf.dynobj;
4088
4089 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4090
4091 if (elf_hash_table (info)->dynamic_sections_created)
4092 {
4093 asection *splt;
4094 bfd_boolean ret;
4095
4096 splt = htab->elf.splt;
4097 BFD_ASSERT (splt != NULL && sdyn != NULL);
4098
4099 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
4100
4101 if (!ret)
4102 return ret;
4103
4104 /* Fill in the head and tail entries in the procedure linkage table. */
4105 if (splt->size > 0)
4106 {
4107 memcpy (splt->contents,
4108 ABI_64_P (output_bfd) ?
4109 tilegx64_plt0_entry : tilegx32_plt0_entry,
4110 PLT_HEADER_SIZE);
4111
4112 memcpy (splt->contents + splt->size
4113 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE,
4114 ABI_64_P (output_bfd) ?
4115 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4116 PLT_TAIL_SIZE);
4117 /* Add padding so that the plt section is a multiple of its
4118 entry size. */
4119 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE;
4120 memset (splt->contents + splt->size - pad_size, 0, pad_size);
4121
4122 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4123 = PLT_ENTRY_SIZE;
4124 }
4125 }
4126
4127 if (htab->elf.sgotplt)
4128 {
4129 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4130 {
4131 _bfd_error_handler
4132 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4133 return FALSE;
4134 }
4135
4136 if (htab->elf.sgotplt->size > 0)
4137 {
4138 /* Write the first two entries in .got.plt, needed for the dynamic
4139 linker. */
4140 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4141 htab->elf.sgotplt->contents);
4142 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4143 htab->elf.sgotplt->contents
4144 + GOT_ENTRY_SIZE (htab));
4145
4146 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4147 GOT_ENTRY_SIZE (htab);
4148 }
4149 }
4150
4151 if (htab->elf.sgot)
4152 {
4153 if (htab->elf.sgot->size > 0)
4154 {
4155 /* Set the first entry in the global offset table to the address of
4156 the dynamic section. */
4157 bfd_vma val = (sdyn ?
4158 sdyn->output_section->vma + sdyn->output_offset :
4159 0);
4160 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4161 htab->elf.sgot->contents);
4162
4163 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4164 GOT_ENTRY_SIZE (htab);
4165 }
4166 }
4167
4168 return TRUE;
4169 }
4170
4171 \f
4172
4173 /* Return address for Ith PLT stub in section PLT, for relocation REL
4174 or (bfd_vma) -1 if it should not be included. */
4175
4176 bfd_vma
4177 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4178 const arelent *rel ATTRIBUTE_UNUSED)
4179 {
4180 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4181 }
4182
4183 enum elf_reloc_type_class
4184 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4185 const asection *rel_sec ATTRIBUTE_UNUSED,
4186 const Elf_Internal_Rela *rela)
4187 {
4188 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4189 {
4190 case R_TILEGX_RELATIVE:
4191 return reloc_class_relative;
4192 case R_TILEGX_JMP_SLOT:
4193 return reloc_class_plt;
4194 case R_TILEGX_COPY:
4195 return reloc_class_copy;
4196 default:
4197 return reloc_class_normal;
4198 }
4199 }
4200
4201 int
4202 tilegx_additional_program_headers (bfd *abfd,
4203 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4204 {
4205 /* Each .intrpt section specified by the user adds another PT_LOAD
4206 header since the sections are discontiguous. */
4207 static const char intrpt_sections[4][9] =
4208 {
4209 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4210 };
4211 int count = 0;
4212 int i;
4213
4214 for (i = 0; i < 4; i++)
4215 {
4216 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4217 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4218 ++count;
4219 }
4220
4221 /* Add four "padding" headers in to leave room in case a custom linker
4222 script does something fancy. Otherwise ld complains that it ran
4223 out of program headers and refuses to link. */
4224 count += 4;
4225
4226 return count;
4227 }
4228
4229
4230 bfd_boolean
4231 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4232 {
4233 bfd *obfd = info->output_bfd;
4234 const char *targ1 = bfd_get_target (ibfd);
4235 const char *targ2 = bfd_get_target (obfd);
4236
4237 if (strcmp (targ1, targ2) != 0)
4238 {
4239 _bfd_error_handler
4240 /* xgettext:c-format */
4241 (_("%B: Cannot link together %s and %s objects."),
4242 ibfd, targ1, targ2);
4243 bfd_set_error (bfd_error_bad_value);
4244 return FALSE;
4245 }
4246
4247 return TRUE;
4248 }
GDB Binutils - Deliverables
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