1 /* TILE-Gx-specific support for ELF.
2 Copyright (C) 2011-2014 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 2, /* size (0 = byte, 1 = short, 2 = long) */
76 32, /* bitsize */
77 FALSE, /* pc_relative */
78 0, /* bitpos */
79 complain_overflow_bitfield, /* complain_on_overflow */
80 bfd_elf_generic_reloc, /* special_function */
81 "R_TILEGX_NONE", /* name */
82 FALSE, /* partial_inplace */
83 0, /* src_mask */
84 0, /* dst_mask */
85 FALSE), /* pcrel_offset */
86 #ifdef BFD64
87 /* A 64 bit absolute relocation. */
88 HOWTO (R_TILEGX_64, /* type */
89 0, /* rightshift */
90 4, /* size (0 = byte, 1 = short, 2 = long) */
91 64, /* bitsize */
92 FALSE, /* pc_relative */
93 0, /* bitpos */
94 complain_overflow_dont, /* complain_on_overflow */
95 bfd_elf_generic_reloc, /* special_function */
96 "R_TILEGX_64", /* name */
97 FALSE, /* partial_inplace */
98 0, /* src_mask */
99 0xffffffffffffffffULL, /* dst_mask */
100 FALSE), /* pcrel_offset */
101 #endif
102 /* A 32 bit absolute relocation. */
103 HOWTO (R_TILEGX_32, /* type */
104 0, /* rightshift */
105 2, /* size (0 = byte, 1 = short, 2 = long) */
106 32, /* bitsize */
107 FALSE, /* pc_relative */
108 0, /* bitpos */
109 complain_overflow_dont, /* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_TILEGX_32", /* name */
112 FALSE, /* partial_inplace */
113 0, /* src_mask */
114 0xffffffff, /* dst_mask */
115 FALSE), /* pcrel_offset */
116
117 /* A 16 bit absolute relocation. */
118 HOWTO (R_TILEGX_16, /* type */
119 0, /* rightshift */
120 1, /* size (0 = byte, 1 = short, 2 = long) */
121 16, /* bitsize */
122 FALSE, /* pc_relative */
123 0, /* bitpos */
124 complain_overflow_bitfield, /* complain_on_overflow */
125 bfd_elf_generic_reloc, /* special_function */
126 "R_TILEGX_16", /* name */
127 FALSE, /* partial_inplace */
128 0, /* src_mask */
129 0xffff, /* dst_mask */
130 FALSE), /* pcrel_offset */
131
132 /* An 8 bit absolute relocation. */
133 HOWTO (R_TILEGX_8, /* type */
134 0, /* rightshift */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
136 8, /* bitsize */
137 FALSE, /* pc_relative */
138 0, /* bitpos */
139 complain_overflow_unsigned, /* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_TILEGX_8", /* name */
142 FALSE, /* partial_inplace */
143 0, /* src_mask */
144 0xff, /* dst_mask */
145 FALSE), /* pcrel_offset */
146 #ifdef BFD64
147 /* A 64 bit pc-relative relocation. */
148 HOWTO (R_TILEGX_64_PCREL,/* type */
149 0, /* rightshift */
150 4, /* size (0 = byte, 1 = short, 2 = long) */
151 64, /* bitsize */
152 TRUE, /* pc_relative */
153 0, /* bitpos */
154 complain_overflow_dont, /* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_TILEGX_32_PCREL", /* name */
157 FALSE, /* partial_inplace */
158 0, /* src_mask */
159 0xffffffffffffffffULL, /* dst_mask */
160 TRUE), /* pcrel_offset */
161 #endif
162 /* A 32 bit pc-relative relocation. */
163 HOWTO (R_TILEGX_32_PCREL,/* type */
164 0, /* rightshift */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
166 32, /* bitsize */
167 TRUE, /* pc_relative */
168 0, /* bitpos */
169 complain_overflow_dont, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_TILEGX_32_PCREL", /* name */
172 FALSE, /* partial_inplace */
173 0, /* src_mask */
174 0xffffffff, /* dst_mask */
175 TRUE), /* pcrel_offset */
176
177 /* A 16 bit pc-relative relocation. */
178 HOWTO (R_TILEGX_16_PCREL,/* type */
179 0, /* rightshift */
180 1, /* size (0 = byte, 1 = short, 2 = long) */
181 16, /* bitsize */
182 TRUE, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_signed, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_TILEGX_16_PCREL", /* name */
187 FALSE, /* partial_inplace */
188 0, /* src_mask */
189 0xffff, /* dst_mask */
190 TRUE), /* pcrel_offset */
191
192 /* An 8 bit pc-relative relocation. */
193 HOWTO (R_TILEGX_8_PCREL, /* type */
194 0, /* rightshift */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
196 8, /* bitsize */
197 TRUE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_signed, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_TILEGX_8_PCREL",/* name */
202 FALSE, /* partial_inplace */
203 0, /* src_mask */
204 0xff, /* dst_mask */
205 TRUE), /* pcrel_offset */
206
207 /* A 16 bit relocation without overflow. */
208 HOWTO (R_TILEGX_HW0, /* type */
209 0, /* rightshift */
210 1, /* size (0 = byte, 1 = short, 2 = long) */
211 16, /* bitsize */
212 FALSE, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_dont,/* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_TILEGX_HW0", /* name */
217 FALSE, /* partial_inplace */
218 0, /* src_mask */
219 0xffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
221
222 /* A 16 bit relocation without overflow. */
223 HOWTO (R_TILEGX_HW1, /* type */
224 16, /* rightshift */
225 1, /* size (0 = byte, 1 = short, 2 = long) */
226 16, /* bitsize */
227 FALSE, /* pc_relative */
228 0, /* bitpos */
229 complain_overflow_dont,/* complain_on_overflow */
230 bfd_elf_generic_reloc, /* special_function */
231 "R_TILEGX_HW1", /* name */
232 FALSE, /* partial_inplace */
233 0, /* src_mask */
234 0xffff, /* dst_mask */
235 FALSE), /* pcrel_offset */
236
237 /* A 16 bit relocation without overflow. */
238 HOWTO (R_TILEGX_HW2, /* type */
239 32, /* rightshift */
240 1, /* size (0 = byte, 1 = short, 2 = long) */
241 16, /* bitsize */
242 FALSE, /* pc_relative */
243 0, /* bitpos */
244 complain_overflow_dont,/* complain_on_overflow */
245 bfd_elf_generic_reloc, /* special_function */
246 "R_TILEGX_HW2", /* name */
247 FALSE, /* partial_inplace */
248 0, /* src_mask */
249 0xffff, /* dst_mask */
250 FALSE), /* pcrel_offset */
251
252 /* A 16 bit relocation without overflow. */
253 HOWTO (R_TILEGX_HW3, /* type */
254 48, /* rightshift */
255 1, /* size (0 = byte, 1 = short, 2 = long) */
256 16, /* bitsize */
257 FALSE, /* pc_relative */
258 0, /* bitpos */
259 complain_overflow_dont,/* complain_on_overflow */
260 bfd_elf_generic_reloc, /* special_function */
261 "R_TILEGX_HW3", /* name */
262 FALSE, /* partial_inplace */
263 0, /* src_mask */
264 0xffff, /* dst_mask */
265 FALSE), /* pcrel_offset */
266
267 /* A 16 bit relocation with overflow. */
268 HOWTO (R_TILEGX_HW0_LAST, /* type */
269 0, /* rightshift */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
271 16, /* bitsize */
272 FALSE, /* pc_relative */
273 0, /* bitpos */
274 complain_overflow_signed,/* complain_on_overflow */
275 bfd_elf_generic_reloc, /* special_function */
276 "R_TILEGX_HW0_LAST", /* name */
277 FALSE, /* partial_inplace */
278 0, /* src_mask */
279 0xffff, /* dst_mask */
280 FALSE), /* pcrel_offset */
281
282 /* A 16 bit relocation with overflow. */
283 HOWTO (R_TILEGX_HW1_LAST, /* type */
284 16, /* rightshift */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
287 FALSE, /* pc_relative */
288 0, /* bitpos */
289 complain_overflow_signed,/* complain_on_overflow */
290 bfd_elf_generic_reloc, /* special_function */
291 "R_TILEGX_HW1_LAST", /* name */
292 FALSE, /* partial_inplace */
293 0, /* src_mask */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
296
297 /* A 16 bit relocation with overflow. */
298 HOWTO (R_TILEGX_HW2_LAST, /* type */
299 32, /* rightshift */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
301 16, /* bitsize */
302 FALSE, /* pc_relative */
303 0, /* bitpos */
304 complain_overflow_signed,/* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_TILEGX_HW2_LAST", /* name */
307 FALSE, /* partial_inplace */
308 0, /* src_mask */
309 0xffff, /* dst_mask */
310 FALSE), /* pcrel_offset */
311
312 HOWTO (R_TILEGX_COPY, /* type */
313 0, /* rightshift */
314 0, /* size (0 = byte, 1 = short, 2 = long) */
315 0, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_dont, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_TILEGX_COPY", /* name */
321 FALSE, /* partial_inplace */
322 0, /* src_mask */
323 0, /* dst_mask */
324 TRUE), /* pcrel_offset */
325
326 HOWTO (R_TILEGX_GLOB_DAT, /* type */
327 0, /* rightshift */
328 0, /* size (0 = byte, 1 = short, 2 = long) */
329 0, /* bitsize */
330 FALSE, /* pc_relative */
331 0, /* bitpos */
332 complain_overflow_dont, /* complain_on_overflow */
333 bfd_elf_generic_reloc, /* special_function */
334 "R_TILEGX_GLOB_DAT", /* name */
335 FALSE, /* partial_inplace */
336 0, /* src_mask */
337 0, /* dst_mask */
338 TRUE), /* pcrel_offset */
339
340 HOWTO (R_TILEGX_JMP_SLOT, /* type */
341 0, /* rightshift */
342 0, /* size (0 = byte, 1 = short, 2 = long) */
343 0, /* bitsize */
344 FALSE, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_dont, /* complain_on_overflow */
347 bfd_elf_generic_reloc, /* special_function */
348 "R_TILEGX_JMP_SLOT", /* name */
349 FALSE, /* partial_inplace */
350 0, /* src_mask */
351 0, /* dst_mask */
352 TRUE), /* pcrel_offset */
353
354 HOWTO (R_TILEGX_RELATIVE, /* type */
355 0, /* rightshift */
356 0, /* size (0 = byte, 1 = short, 2 = long) */
357 0, /* bitsize */
358 FALSE, /* pc_relative */
359 0, /* bitpos */
360 complain_overflow_dont, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_TILEGX_RELATIVE", /* name */
363 FALSE, /* partial_inplace */
364 0, /* src_mask */
365 0, /* dst_mask */
366 TRUE), /* pcrel_offset */
367
368 HOWTO (R_TILEGX_BROFF_X1, /* type */
369 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 17, /* bitsize */
372 TRUE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_TILEGX_BROFF_X1", /* name */
377 FALSE, /* partial_inplace */
378 0, /* src_mask */
379 -1, /* dst_mask */
380 TRUE), /* pcrel_offset */
381
382 HOWTO (R_TILEGX_JUMPOFF_X1, /* type */
383 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 27, /* bitsize */
386 TRUE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_signed,/* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_TILEGX_JUMPOFF_X1", /* name */
391 FALSE, /* partial_inplace */
392 0, /* src_mask */
393 -1, /* dst_mask */
394 TRUE), /* pcrel_offset */
395
396 HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */
397 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
399 27, /* bitsize */
400 TRUE, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_signed,/* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_TILEGX_JUMPOFF_X1_PLT", /* name */
405 FALSE, /* partial_inplace */
406 0, /* src_mask */
407 -1, /* dst_mask */
408 TRUE), /* pcrel_offset */
409
410 #define TILEGX_IMM_HOWTO(name, size, bitsize) \
411 HOWTO (name, 0, size, bitsize, FALSE, 0, \
412 complain_overflow_signed, bfd_elf_generic_reloc, \
413 #name, FALSE, 0, -1, FALSE)
414
415 #define TILEGX_UIMM_HOWTO(name, size, bitsize) \
416 HOWTO (name, 0, size, bitsize, FALSE, 0, \
417 complain_overflow_unsigned, bfd_elf_generic_reloc, \
418 #name, FALSE, 0, -1, FALSE)
419
420 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 0, 8),
421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8),
422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8),
423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8),
424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8),
425
426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14),
427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14),
428
429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6),
430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6),
431
432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6),
433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6),
434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6),
435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6),
436
437 #define TILEGX_IMM16_HOWTO(name, rshift) \
438 HOWTO (name, rshift, 1, 16, FALSE, 0, \
439 complain_overflow_dont, bfd_elf_generic_reloc, \
440 #name, FALSE, 0, 0xffff, FALSE)
441
442 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0),
443 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0),
444 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16),
445 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16),
446 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32),
447 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32),
448 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48),
449 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48),
450
451 #define TILEGX_IMM16_HOWTO_LAST(name, rshift) \
452 HOWTO (name, rshift, 1, 16, FALSE, 0, \
453 complain_overflow_signed, bfd_elf_generic_reloc, \
454 #name, FALSE, 0, 0xffff, FALSE)
455
456 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0),
457 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0),
458 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16),
459 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16),
460 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32),
461 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32),
462
463 /* PC-relative offsets. */
464
465 #define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \
466 HOWTO (name, rshift, 1, 16, TRUE, 0, \
467 complain_overflow_dont, bfd_elf_generic_reloc, \
468 #name, FALSE, 0, 0xffff, TRUE)
469
470 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0),
471 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0),
472 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16),
473 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16),
474 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32),
475 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32),
476 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48),
477 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48),
478
479 #define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \
480 HOWTO (name, rshift, 1, 16, TRUE, 0, \
481 complain_overflow_signed, bfd_elf_generic_reloc, \
482 #name, FALSE, 0, 0xffff, TRUE)
483
484 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0),
485 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0),
486 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16),
487 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16),
488 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32),
489 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32),
490
491 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0),
492 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0),
493
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
632 /* Map BFD reloc types to TILEGX ELF reloc types. */
633
634 typedef struct tilegx_reloc_map
635 {
636 bfd_reloc_code_real_type bfd_reloc_val;
637 unsigned int tilegx_reloc_val;
638 reloc_howto_type * table;
639 } reloc_map;
640
641 static const reloc_map tilegx_reloc_map [] =
642 {
643 #define TH_REMAP(bfd, tilegx) \
644 { bfd, tilegx, tilegx_elf_howto_table },
645
646 /* Standard relocations. */
647 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE)
648 TH_REMAP (BFD_RELOC_64, R_TILEGX_64)
649 TH_REMAP (BFD_RELOC_32, R_TILEGX_32)
650 TH_REMAP (BFD_RELOC_16, R_TILEGX_16)
651 TH_REMAP (BFD_RELOC_8, R_TILEGX_8)
652 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL)
653 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL)
654 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL)
655 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL)
656
657 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t)
658
659 /* Custom relocations. */
660 SIMPLE_REMAP (TILEGX_HW0)
661 SIMPLE_REMAP (TILEGX_HW1)
662 SIMPLE_REMAP (TILEGX_HW2)
663 SIMPLE_REMAP (TILEGX_HW3)
664 SIMPLE_REMAP (TILEGX_HW0_LAST)
665 SIMPLE_REMAP (TILEGX_HW1_LAST)
666 SIMPLE_REMAP (TILEGX_HW2_LAST)
667 SIMPLE_REMAP (TILEGX_COPY)
668 SIMPLE_REMAP (TILEGX_GLOB_DAT)
669 SIMPLE_REMAP (TILEGX_JMP_SLOT)
670 SIMPLE_REMAP (TILEGX_RELATIVE)
671 SIMPLE_REMAP (TILEGX_BROFF_X1)
672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1)
673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT)
674 SIMPLE_REMAP (TILEGX_IMM8_X0)
675 SIMPLE_REMAP (TILEGX_IMM8_Y0)
676 SIMPLE_REMAP (TILEGX_IMM8_X1)
677 SIMPLE_REMAP (TILEGX_IMM8_Y1)
678 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1)
679 SIMPLE_REMAP (TILEGX_MT_IMM14_X1)
680 SIMPLE_REMAP (TILEGX_MF_IMM14_X1)
681 SIMPLE_REMAP (TILEGX_MMSTART_X0)
682 SIMPLE_REMAP (TILEGX_MMEND_X0)
683 SIMPLE_REMAP (TILEGX_SHAMT_X0)
684 SIMPLE_REMAP (TILEGX_SHAMT_X1)
685 SIMPLE_REMAP (TILEGX_SHAMT_Y0)
686 SIMPLE_REMAP (TILEGX_SHAMT_Y1)
687 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0)
688 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0)
689 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1)
690 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1)
691 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2)
692 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2)
693 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3)
694 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3)
695 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST)
696 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST)
697 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST)
698 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST)
699 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST)
700 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST)
701 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL)
702 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL)
703 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL)
704 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL)
705 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL)
706 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL)
707 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL)
708 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL)
709 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL)
710 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL)
711 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL)
712 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL)
713 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL)
714 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL)
715 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT)
716 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT)
717 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL)
718 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL)
719 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL)
720 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL)
721 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL)
722 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL)
723 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT)
724 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT)
725 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT)
726 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT)
727 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL)
728 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL)
729 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD)
730 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD)
731 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE)
732 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE)
733 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE)
734 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE)
735 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE)
736 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
737 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD)
738 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD)
739 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD)
740 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD)
741 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE)
742 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE)
743 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL)
744 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL)
745 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL)
746 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL)
747 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL)
748 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL)
749 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE)
750 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE)
751 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE)
752 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE)
753
754 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64)
755 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64)
756 SIMPLE_REMAP (TILEGX_TLS_TPOFF64)
757
758 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32)
759 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32)
760 SIMPLE_REMAP (TILEGX_TLS_TPOFF32)
761
762 SIMPLE_REMAP (TILEGX_TLS_GD_CALL)
763 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD)
764 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD)
765 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD)
766 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD)
767 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD)
768 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD)
769 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD)
770 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD)
771 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD)
772
773 #undef SIMPLE_REMAP
774 #undef TH_REMAP
775
776 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 },
777 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 },
778 };
779
780
781
782 /* The TILE-Gx linker needs to keep track of the number of relocs that it
783 decides to copy as dynamic relocs in check_relocs for each symbol.
784 This is so that it can later discard them if they are found to be
785 unnecessary. We store the information in a field extending the
786 regular ELF linker hash table. */
787
788 struct tilegx_elf_dyn_relocs
789 {
790 struct tilegx_elf_dyn_relocs *next;
791
792 /* The input section of the reloc. */
793 asection *sec;
794
795 /* Total number of relocs copied for the input section. */
796 bfd_size_type count;
797
798 /* Number of pc-relative relocs copied for the input section. */
799 bfd_size_type pc_count;
800 };
801
802 /* TILEGX ELF linker hash entry. */
803
804 struct tilegx_elf_link_hash_entry
805 {
806 struct elf_link_hash_entry elf;
807
808 /* Track dynamic relocs copied for this symbol. */
809 struct tilegx_elf_dyn_relocs *dyn_relocs;
810
811 #define GOT_UNKNOWN 0
812 #define GOT_NORMAL 1
813 #define GOT_TLS_GD 2
814 #define GOT_TLS_IE 4
815 unsigned char tls_type;
816 };
817
818 #define tilegx_elf_hash_entry(ent) \
819 ((struct tilegx_elf_link_hash_entry *)(ent))
820
821 struct _bfd_tilegx_elf_obj_tdata
822 {
823 struct elf_obj_tdata root;
824
825 /* tls_type for each local got entry. */
826 char *local_got_tls_type;
827 };
828
829 #define _bfd_tilegx_elf_tdata(abfd) \
830 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any)
831
832 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \
833 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type)
834
835 #define is_tilegx_elf(bfd) \
836 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
837 && elf_tdata (bfd) != NULL \
838 && elf_object_id (bfd) == TILEGX_ELF_DATA)
839
840 #include "elf/common.h"
841 #include "elf/internal.h"
842
843 struct tilegx_elf_link_hash_table
844 {
845 struct elf_link_hash_table elf;
846
847 int bytes_per_word;
848 int word_align_power;
849 int bytes_per_rela;
850 int dtpmod_reloc;
851 int dtpoff_reloc;
852 int tpoff_reloc;
853 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
854 bfd_vma (*r_symndx) (bfd_vma);
855 void (*put_word) (bfd *, bfd_vma, void *);
856 const char *dynamic_interpreter;
857
858 /* Short-cuts to get to dynamic linker sections. */
859 asection *sdynbss;
860 asection *srelbss;
861
862 /* Whether LE transition has been disabled for some of the
863 sections. */
864 bfd_boolean disable_le_transition;
865
866 /* Small local sym to section mapping cache. */
867 struct sym_cache sym_cache;
868 };
869
870
871 /* Get the Tile ELF linker hash table from a link_info structure. */
872 #define tilegx_elf_hash_table(p) \
873 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
874 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL)
875
876 #ifdef BFD64
877 static bfd_vma
tilegx_elf_r_info_64(Elf_Internal_Rela * in_rel ATTRIBUTE_UNUSED,bfd_vma rel_index,bfd_vma type)878 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
879 bfd_vma rel_index,
880 bfd_vma type)
881 {
882 return ELF64_R_INFO (rel_index, type);
883 }
884
885 static bfd_vma
tilegx_elf_r_symndx_64(bfd_vma r_info)886 tilegx_elf_r_symndx_64 (bfd_vma r_info)
887 {
888 return ELF64_R_SYM (r_info);
889 }
890
891 static void
tilegx_put_word_64(bfd * abfd,bfd_vma val,void * ptr)892 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
893 {
894 bfd_put_64 (abfd, val, ptr);
895 }
896 #endif /* BFD64 */
897
898 static bfd_vma
tilegx_elf_r_info_32(Elf_Internal_Rela * in_rel ATTRIBUTE_UNUSED,bfd_vma rel_index,bfd_vma type)899 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
900 bfd_vma rel_index,
901 bfd_vma type)
902 {
903 return ELF32_R_INFO (rel_index, type);
904 }
905
906 static bfd_vma
tilegx_elf_r_symndx_32(bfd_vma r_info)907 tilegx_elf_r_symndx_32 (bfd_vma r_info)
908 {
909 return ELF32_R_SYM (r_info);
910 }
911
912 static void
tilegx_put_word_32(bfd * abfd,bfd_vma val,void * ptr)913 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
914 {
915 bfd_put_32 (abfd, val, ptr);
916 }
917
918 reloc_howto_type *
tilegx_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)919 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
920 bfd_reloc_code_real_type code)
921 {
922 unsigned int i;
923
924 for (i = ARRAY_SIZE (tilegx_reloc_map); --i;)
925 {
926 const reloc_map * entry;
927
928 entry = tilegx_reloc_map + i;
929
930 if (entry->bfd_reloc_val == code)
931 return entry->table + (entry->tilegx_reloc_val
932 - entry->table[0].type);
933 }
934
935 return NULL;
936 }
937
938 reloc_howto_type *
tilegx_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)939 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
940 const char *r_name)
941 {
942 unsigned int i;
943
944 for (i = 0;
945 i < (sizeof (tilegx_elf_howto_table)
946 / sizeof (tilegx_elf_howto_table[0]));
947 i++)
948 if (tilegx_elf_howto_table[i].name != NULL
949 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
950 return &tilegx_elf_howto_table[i];
951
952 return NULL;
953 }
954
955 void
tilegx_info_to_howto_rela(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)956 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
957 arelent *cache_ptr,
958 Elf_Internal_Rela *dst)
959 {
960 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
961
962 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
963 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
964 else if (r_type - R_TILEGX_GNU_VTINHERIT
965 <= (unsigned int) R_TILEGX_GNU_VTENTRY)
966 cache_ptr->howto
967 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
968 else
969 abort ();
970 }
971
972 typedef tilegx_bundle_bits (*tilegx_create_func)(int);
973
974 static const tilegx_create_func reloc_to_create_func[] =
975 {
976 /* The first twenty relocation types don't correspond to operands */
977 NULL,
978 NULL,
979 NULL,
980 NULL,
981 NULL,
982 NULL,
983 NULL,
984 NULL,
985 NULL,
986 NULL,
987 NULL,
988 NULL,
989 NULL,
990 NULL,
991 NULL,
992 NULL,
993 NULL,
994 NULL,
995 NULL,
996 NULL,
997
998 /* The remaining relocations are used for immediate operands */
999 create_BrOff_X1,
1000 create_JumpOff_X1,
1001 create_JumpOff_X1,
1002 create_Imm8_X0,
1003 create_Imm8_Y0,
1004 create_Imm8_X1,
1005 create_Imm8_Y1,
1006 create_Dest_Imm8_X1,
1007 create_MT_Imm14_X1,
1008 create_MF_Imm14_X1,
1009 create_BFStart_X0,
1010 create_BFEnd_X0,
1011 create_ShAmt_X0,
1012 create_ShAmt_X1,
1013 create_ShAmt_Y0,
1014 create_ShAmt_Y1,
1015 create_Imm16_X0,
1016 create_Imm16_X1,
1017 create_Imm16_X0,
1018 create_Imm16_X1,
1019 create_Imm16_X0,
1020 create_Imm16_X1,
1021 create_Imm16_X0,
1022 create_Imm16_X1,
1023 create_Imm16_X0,
1024 create_Imm16_X1,
1025 create_Imm16_X0,
1026 create_Imm16_X1,
1027 create_Imm16_X0,
1028 create_Imm16_X1,
1029 create_Imm16_X0,
1030 create_Imm16_X1,
1031 create_Imm16_X0,
1032 create_Imm16_X1,
1033 create_Imm16_X0,
1034 create_Imm16_X1,
1035 create_Imm16_X0,
1036 create_Imm16_X1,
1037 create_Imm16_X0,
1038 create_Imm16_X1,
1039 create_Imm16_X0,
1040 create_Imm16_X1,
1041 create_Imm16_X0,
1042 create_Imm16_X1,
1043 create_Imm16_X0,
1044 create_Imm16_X1,
1045 create_Imm16_X0,
1046 create_Imm16_X1,
1047 create_Imm16_X0,
1048 create_Imm16_X1,
1049 create_Imm16_X0,
1050 create_Imm16_X1,
1051 create_Imm16_X0,
1052 create_Imm16_X1,
1053 create_Imm16_X0,
1054 create_Imm16_X1,
1055 create_Imm16_X0,
1056 create_Imm16_X1,
1057 create_Imm16_X0,
1058 create_Imm16_X1,
1059 create_Imm16_X0,
1060 create_Imm16_X1,
1061 create_Imm16_X0,
1062 create_Imm16_X1,
1063 create_Imm16_X0,
1064 create_Imm16_X1,
1065 create_Imm16_X0,
1066 create_Imm16_X1,
1067 create_Imm16_X0,
1068 create_Imm16_X1,
1069 NULL,
1070 NULL,
1071 create_Imm16_X0,
1072 create_Imm16_X1,
1073 create_Imm16_X0,
1074 create_Imm16_X1,
1075 create_Imm16_X0,
1076 create_Imm16_X1,
1077 create_Imm16_X0,
1078 create_Imm16_X1,
1079 create_Imm16_X0,
1080 create_Imm16_X1,
1081 create_Imm16_X0,
1082 create_Imm16_X1,
1083 };
1084
1085 static void
tilegx_elf_append_rela(bfd * abfd,asection * s,Elf_Internal_Rela * rel)1086 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
1087 {
1088 const struct elf_backend_data *bed;
1089 bfd_byte *loc;
1090
1091 bed = get_elf_backend_data (abfd);
1092 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
1093 bed->s->swap_reloca_out (abfd, rel, loc);
1094 }
1095
1096 /* PLT/GOT stuff */
1097
1098 /* The procedure linkage table starts with the following header:
1099
1100 ld_add r28, r27, 8
1101 ld r27, r27
1102 {
1103 jr r27
1104 info 10 ## SP not offset, return PC in LR
1105 }
1106
1107 Subsequent entries are the following, jumping to the header at the end:
1108
1109 {
1110 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET>
1111 lnk r26
1112 }
1113 1:
1114 {
1115 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1116 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1117 }
1118 {
1119 add r28, r26, r28
1120 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1121 }
1122 {
1123 add r27, r26, r27
1124 ld r28, r28
1125 info 10 ## SP not offset, return PC in LR
1126 }
1127 {
1128 shl16insli r29, zero, MY_PLT_INDEX
1129 jr r28
1130 }
1131
1132 This code sequence lets the code at at the start of the PLT determine
1133 which PLT entry was executed by examining 'r29'.
1134
1135 Note that MY_PLT_INDEX skips over the header entries, so the first
1136 actual jump table entry has index zero.
1137
1138 If the offset fits in 16 bits,
1139
1140 lnk r26
1141 1:
1142 {
1143 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1144 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1145 }
1146 {
1147 shl16insli r29, zero, MY_PLT_INDEX
1148 ld r28, r28
1149 }
1150 {
1151 add r27, r26, r27
1152 jr r28
1153 }
1154 info 10 ## SP not offset, return PC in LR
1155
1156 For the purpose of backtracing, the procedure linkage table ends with the
1157 following tail entry:
1158
1159 info 10 ## SP not offset, return PC in LR
1160
1161 The 32-bit versions are similar, with ld4s replacing ld, and offsets into
1162 the GOT being multiples of 4 instead of 8.
1163
1164 */
1165
1166 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1167 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1168 #define PLT_TAIL_SIZE_IN_BUNDLES 1
1169
1170 #define PLT_HEADER_SIZE \
1171 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1172 #define PLT_ENTRY_SIZE \
1173 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1174 #define PLT_TAIL_SIZE \
1175 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1176
1177 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab)
1178
1179 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab))
1180
1181 static const bfd_byte
1182 tilegx64_plt0_entry[PLT_HEADER_SIZE] =
1183 {
1184 0x00, 0x30, 0x48, 0x51,
1185 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */
1186 0x00, 0x30, 0xbc, 0x35,
1187 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */
1188 0xff, 0xaf, 0x30, 0x40,
1189 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1190 };
1191
1192 static const bfd_byte
1193 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] =
1194 {
1195 0xdc, 0x0f, 0x00, 0x10,
1196 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1197 0xdb, 0x0f, 0x00, 0x10,
1198 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1199 0x9c, 0xc6, 0x0d, 0xd0,
1200 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1201 0x9b, 0xb6, 0xc5, 0xad,
1202 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1203 0xdd, 0x0f, 0x00, 0x70,
1204 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1205 };
1206
1207 static const bfd_byte
1208 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] =
1209 {
1210 0x00, 0x30, 0x48, 0x51,
1211 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1212 0x9c, 0x06, 0x00, 0x90,
1213 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1214 0xdd, 0x0f, 0x00, 0x70,
1215 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */
1216 0x9b, 0xb6, 0x0d, 0x50,
1217 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1218 0x00, 0x30, 0x48, 0xd1,
1219 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1220 };
1221
1222 /* Reuse an existing info 10 bundle. */
1223 static const bfd_byte *const tilegx64_plt_tail_entry =
1224 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1225
1226 static const bfd_byte
1227 tilegx32_plt0_entry[PLT_HEADER_SIZE] =
1228 {
1229 0x00, 0x30, 0x48, 0x51,
1230 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */
1231 0x00, 0x30, 0xbc, 0x35,
1232 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */
1233 0xff, 0xaf, 0x30, 0x40,
1234 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1235 };
1236
1237 static const bfd_byte
1238 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] =
1239 {
1240 0xdc, 0x0f, 0x00, 0x10,
1241 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1242 0xdb, 0x0f, 0x00, 0x10,
1243 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1244 0x9c, 0xc6, 0x0d, 0xd0,
1245 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1246 0x9b, 0xb6, 0xc5, 0xad,
1247 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */
1248 0xdd, 0x0f, 0x00, 0x70,
1249 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1250 };
1251
1252 static const bfd_byte
1253 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] =
1254 {
1255 0x00, 0x30, 0x48, 0x51,
1256 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1257 0x9c, 0x06, 0x00, 0x90,
1258 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1259 0xdd, 0x0f, 0x00, 0x70,
1260 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */
1261 0x9b, 0xb6, 0x0d, 0x50,
1262 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1263 0x00, 0x30, 0x48, 0xd1,
1264 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1265 };
1266
1267 /* Reuse an existing info 10 bundle. */
1268 static const bfd_byte *const tilegx32_plt_tail_entry =
1269 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1270
1271 static int
tilegx_plt_entry_build(bfd * output_bfd,struct tilegx_elf_link_hash_table * htab,asection * splt,asection * sgotplt,bfd_vma offset,bfd_vma * r_offset)1272 tilegx_plt_entry_build (bfd *output_bfd,
1273 struct tilegx_elf_link_hash_table *htab,
1274 asection *splt, asection *sgotplt,
1275 bfd_vma offset, bfd_vma *r_offset)
1276 {
1277 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
1278 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab)
1279 + GOTPLT_HEADER_SIZE (htab));
1280 tilegx_bundle_bits *pc;
1281
1282 /* Compute the distance from the got entry to the lnk. */
1283 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1284 + sgotplt->output_offset
1285 + got_offset
1286 - splt->output_section->vma
1287 - splt->output_offset
1288 - offset
1289 - TILEGX_BUNDLE_SIZE_IN_BYTES;
1290
1291 /* Compute the distance to GOTPLT[0]. */
1292 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1293
1294 /* Check whether we can use the short plt entry with 16-bit offset. */
1295 bfd_boolean short_plt_entry =
1296 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1297
1298 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *)
1299 (ABI_64_P (output_bfd) ?
1300 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) :
1301 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry));
1302
1303 /* Copy the plt entry template. */
1304 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE);
1305
1306 /* Write the immediate offsets. */
1307 pc = (tilegx_bundle_bits *)(splt->contents + offset);
1308
1309 if (short_plt_entry)
1310 {
1311 /* { lnk r28 } */
1312 pc++;
1313
1314 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */
1315 *pc++ |= create_Imm16_X0 (dist_got_entry)
1316 | create_Imm16_X1 (dist_got0);
1317
1318 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */
1319 *pc++ |= create_Imm16_X0 (plt_index);
1320 }
1321 else
1322 {
1323 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */
1324 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16);
1325
1326 /* { moveli r27, &GOTPLT[0] ;
1327 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */
1328 *pc++ |= create_Imm16_X0 (dist_got0 >> 16)
1329 | create_Imm16_X1 (dist_got_entry);
1330
1331 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */
1332 *pc++ |= create_Imm16_X1 (dist_got0);
1333
1334 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1335 pc++;
1336
1337 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */
1338 *pc++ |= create_Imm16_X0 (plt_index);
1339 }
1340
1341 /* Set the relocation offset. */
1342 *r_offset = got_offset;
1343
1344 return plt_index;
1345 }
1346
1347 /* Create an entry in an TILEGX ELF linker hash table. */
1348
1349 static struct bfd_hash_entry *
link_hash_newfunc(struct bfd_hash_entry * entry,struct bfd_hash_table * table,const char * string)1350 link_hash_newfunc (struct bfd_hash_entry *entry,
1351 struct bfd_hash_table *table, const char *string)
1352 {
1353 /* Allocate the structure if it has not already been allocated by a
1354 subclass. */
1355 if (entry == NULL)
1356 {
1357 entry =
1358 bfd_hash_allocate (table,
1359 sizeof (struct tilegx_elf_link_hash_entry));
1360 if (entry == NULL)
1361 return entry;
1362 }
1363
1364 /* Call the allocation method of the superclass. */
1365 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1366 if (entry != NULL)
1367 {
1368 struct tilegx_elf_link_hash_entry *eh;
1369
1370 eh = (struct tilegx_elf_link_hash_entry *) entry;
1371 eh->dyn_relocs = NULL;
1372 eh->tls_type = GOT_UNKNOWN;
1373 }
1374
1375 return entry;
1376 }
1377
1378 /* Create a TILEGX ELF linker hash table. */
1379
1380 struct bfd_link_hash_table *
tilegx_elf_link_hash_table_create(bfd * abfd)1381 tilegx_elf_link_hash_table_create (bfd *abfd)
1382 {
1383 struct tilegx_elf_link_hash_table *ret;
1384 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table);
1385
1386 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1387 if (ret == NULL)
1388 return NULL;
1389
1390 #ifdef BFD64
1391 if (ABI_64_P (abfd))
1392 {
1393 ret->bytes_per_word = 8;
1394 ret->word_align_power = 3;
1395 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1396 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1397 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1398 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1399 ret->r_info = tilegx_elf_r_info_64;
1400 ret->r_symndx = tilegx_elf_r_symndx_64;
1401 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1402 ret->put_word = tilegx_put_word_64;
1403 }
1404 else
1405 #endif
1406 {
1407 ret->bytes_per_word = 4;
1408 ret->word_align_power = 2;
1409 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1410 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1411 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1412 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1413 ret->r_info = tilegx_elf_r_info_32;
1414 ret->r_symndx = tilegx_elf_r_symndx_32;
1415 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1416 ret->put_word = tilegx_put_word_32;
1417 }
1418
1419 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1420 sizeof (struct tilegx_elf_link_hash_entry),
1421 TILEGX_ELF_DATA))
1422 {
1423 free (ret);
1424 return NULL;
1425 }
1426
1427 return &ret->elf.root;
1428 }
1429
1430 /* Create the .got section. */
1431
1432 static bfd_boolean
tilegx_elf_create_got_section(bfd * abfd,struct bfd_link_info * info)1433 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1434 {
1435 flagword flags;
1436 asection *s, *s_got;
1437 struct elf_link_hash_entry *h;
1438 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1439 struct elf_link_hash_table *htab = elf_hash_table (info);
1440
1441 /* This function may be called more than once. */
1442 s = bfd_get_linker_section (abfd, ".got");
1443 if (s != NULL)
1444 return TRUE;
1445
1446 flags = bed->dynamic_sec_flags;
1447
1448 s = bfd_make_section_anyway_with_flags (abfd,
1449 (bed->rela_plts_and_copies_p
1450 ? ".rela.got" : ".rel.got"),
1451 (bed->dynamic_sec_flags
1452 | SEC_READONLY));
1453 if (s == NULL
1454 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1455 return FALSE;
1456 htab->srelgot = s;
1457
1458 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
1459 if (s == NULL
1460 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1461 return FALSE;
1462 htab->sgot = s;
1463
1464 /* The first bit of the global offset table is the header. */
1465 s->size += bed->got_header_size;
1466
1467 if (bed->want_got_plt)
1468 {
1469 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
1470 if (s == NULL
1471 || !bfd_set_section_alignment (abfd, s,
1472 bed->s->log_file_align))
1473 return FALSE;
1474 htab->sgotplt = s;
1475
1476 /* Reserve room for the header. */
1477 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1478 }
1479
1480 if (bed->want_got_sym)
1481 {
1482 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1483 section. We don't do this in the linker script because we don't want
1484 to define the symbol if we are not creating a global offset
1485 table. */
1486 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1487 "_GLOBAL_OFFSET_TABLE_");
1488 elf_hash_table (info)->hgot = h;
1489 if (h == NULL)
1490 return FALSE;
1491 }
1492
1493 return TRUE;
1494 }
1495
1496 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1497 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1498 hash table. */
1499
1500 bfd_boolean
tilegx_elf_create_dynamic_sections(bfd * dynobj,struct bfd_link_info * info)1501 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1502 struct bfd_link_info *info)
1503 {
1504 struct tilegx_elf_link_hash_table *htab;
1505
1506 htab = tilegx_elf_hash_table (info);
1507 BFD_ASSERT (htab != NULL);
1508
1509 if (!tilegx_elf_create_got_section (dynobj, info))
1510 return FALSE;
1511
1512 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1513 return FALSE;
1514
1515 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1516 if (!info->shared)
1517 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1518
1519 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1520 || (!info->shared && !htab->srelbss))
1521 abort ();
1522
1523 return TRUE;
1524 }
1525
1526 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1527
1528 void
tilegx_elf_copy_indirect_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * dir,struct elf_link_hash_entry * ind)1529 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1530 struct elf_link_hash_entry *dir,
1531 struct elf_link_hash_entry *ind)
1532 {
1533 struct tilegx_elf_link_hash_entry *edir, *eind;
1534
1535 edir = (struct tilegx_elf_link_hash_entry *) dir;
1536 eind = (struct tilegx_elf_link_hash_entry *) ind;
1537
1538 if (eind->dyn_relocs != NULL)
1539 {
1540 if (edir->dyn_relocs != NULL)
1541 {
1542 struct tilegx_elf_dyn_relocs **pp;
1543 struct tilegx_elf_dyn_relocs *p;
1544
1545 /* Add reloc counts against the indirect sym to the direct sym
1546 list. Merge any entries against the same section. */
1547 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1548 {
1549 struct tilegx_elf_dyn_relocs *q;
1550
1551 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1552 if (q->sec == p->sec)
1553 {
1554 q->pc_count += p->pc_count;
1555 q->count += p->count;
1556 *pp = p->next;
1557 break;
1558 }
1559 if (q == NULL)
1560 pp = &p->next;
1561 }
1562 *pp = edir->dyn_relocs;
1563 }
1564
1565 edir->dyn_relocs = eind->dyn_relocs;
1566 eind->dyn_relocs = NULL;
1567 }
1568
1569 if (ind->root.type == bfd_link_hash_indirect
1570 && dir->got.refcount <= 0)
1571 {
1572 edir->tls_type = eind->tls_type;
1573 eind->tls_type = GOT_UNKNOWN;
1574 }
1575 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1576 }
1577
1578 static int
tilegx_tls_translate_to_le(int r_type)1579 tilegx_tls_translate_to_le (int r_type)
1580 {
1581 switch (r_type)
1582 {
1583 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1584 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1585 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1586
1587 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1588 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1589 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1590
1591 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1592 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1593 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1594
1595 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1596 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1597 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1598
1599 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1600 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1601 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1602
1603 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1604 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1605 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1606 }
1607 return r_type;
1608 }
1609
1610 static int
tilegx_tls_translate_to_ie(int r_type)1611 tilegx_tls_translate_to_ie (int r_type)
1612 {
1613 switch (r_type)
1614 {
1615 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1616 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1617 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1618
1619 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1620 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1621 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1622
1623 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1624 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1625 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1626
1627 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1628 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1629 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1630
1631 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1632 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1633 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1634
1635 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1636 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1637 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1638 }
1639 return r_type;
1640 }
1641
1642 static int
tilegx_elf_tls_transition(struct bfd_link_info * info,int r_type,int is_local,bfd_boolean disable_le_transition)1643 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1644 int is_local, bfd_boolean disable_le_transition)
1645 {
1646 if (info->shared)
1647 return r_type;
1648
1649 if (is_local && !disable_le_transition)
1650 return tilegx_tls_translate_to_le (r_type);
1651 else
1652 return tilegx_tls_translate_to_ie (r_type);
1653 }
1654
1655 /* Look through the relocs for a section during the first phase, and
1656 allocate space in the global offset table or procedure linkage
1657 table. */
1658
1659 bfd_boolean
tilegx_elf_check_relocs(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)1660 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1661 asection *sec, const Elf_Internal_Rela *relocs)
1662 {
1663 struct tilegx_elf_link_hash_table *htab;
1664 Elf_Internal_Shdr *symtab_hdr;
1665 struct elf_link_hash_entry **sym_hashes;
1666 const Elf_Internal_Rela *rel;
1667 const Elf_Internal_Rela *rel_end;
1668 asection *sreloc;
1669 int num_relocs;
1670 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE;
1671
1672 if (info->relocatable)
1673 return TRUE;
1674
1675 htab = tilegx_elf_hash_table (info);
1676 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1677 sym_hashes = elf_sym_hashes (abfd);
1678
1679 sreloc = NULL;
1680
1681 num_relocs = sec->reloc_count;
1682
1683 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1684
1685 if (htab->elf.dynobj == NULL)
1686 htab->elf.dynobj = abfd;
1687
1688 rel_end = relocs + num_relocs;
1689
1690 /* Check whether to do optimization to transform TLS GD/IE
1691 referehces to TLS LE. We disable it if we're linking with old
1692 TLS code sequences that do not support such optimization. Old
1693 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1694 no tls_add relocations. */
1695 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1696 {
1697 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1698 switch (r_type)
1699 {
1700 case R_TILEGX_TLS_GD_CALL:
1701 case R_TILEGX_TLS_IE_LOAD:
1702 has_tls_gd_or_ie = TRUE;
1703 break;
1704 case R_TILEGX_IMM8_X0_TLS_ADD:
1705 case R_TILEGX_IMM8_Y0_TLS_ADD:
1706 case R_TILEGX_IMM8_X1_TLS_ADD:
1707 case R_TILEGX_IMM8_Y1_TLS_ADD:
1708 has_tls_add = TRUE;
1709 break;
1710 }
1711 }
1712
1713 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1714 htab->disable_le_transition |= sec->sec_flg0;
1715
1716 for (rel = relocs; rel < rel_end; rel++)
1717 {
1718 unsigned int r_type;
1719 unsigned long r_symndx;
1720 struct elf_link_hash_entry *h;
1721 int tls_type;
1722
1723 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1724 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1725
1726 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1727 {
1728 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1729 abfd, r_symndx);
1730 return FALSE;
1731 }
1732
1733 if (r_symndx < symtab_hdr->sh_info)
1734 h = NULL;
1735 else
1736 {
1737 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1738 while (h->root.type == bfd_link_hash_indirect
1739 || h->root.type == bfd_link_hash_warning)
1740 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1741
1742 /* PR15323, ref flags aren't set for references in the same
1743 object. */
1744 h->root.non_ir_ref = 1;
1745 }
1746
1747 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1748 sec->sec_flg0);
1749 switch (r_type)
1750 {
1751 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1752 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1753 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1754 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1755 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1756 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1757 if (info->shared)
1758 goto r_tilegx_plt32;
1759 break;
1760
1761 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1762 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1763 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1764 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1765 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1766 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1767 BFD_ASSERT (info->shared);
1768 tls_type = GOT_TLS_GD;
1769 goto have_got_reference;
1770
1771 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1772 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1773 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1774 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1775 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1776 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1777 tls_type = GOT_TLS_IE;
1778 if (info->shared)
1779 info->flags |= DF_STATIC_TLS;
1780 goto have_got_reference;
1781
1782 case R_TILEGX_IMM16_X0_HW0_GOT:
1783 case R_TILEGX_IMM16_X1_HW0_GOT:
1784 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1785 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1786 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1787 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1788 tls_type = GOT_NORMAL;
1789 /* Fall Through */
1790
1791 have_got_reference:
1792 /* This symbol requires a global offset table entry. */
1793 {
1794 int old_tls_type;
1795
1796 if (h != NULL)
1797 {
1798 h->got.refcount += 1;
1799 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1800 }
1801 else
1802 {
1803 bfd_signed_vma *local_got_refcounts;
1804
1805 /* This is a global offset table entry for a local symbol. */
1806 local_got_refcounts = elf_local_got_refcounts (abfd);
1807 if (local_got_refcounts == NULL)
1808 {
1809 bfd_size_type size;
1810
1811 size = symtab_hdr->sh_info;
1812 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1813 local_got_refcounts = ((bfd_signed_vma *)
1814 bfd_zalloc (abfd, size));
1815 if (local_got_refcounts == NULL)
1816 return FALSE;
1817 elf_local_got_refcounts (abfd) = local_got_refcounts;
1818 _bfd_tilegx_elf_local_got_tls_type (abfd)
1819 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1820 }
1821 local_got_refcounts[r_symndx] += 1;
1822 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1823 }
1824
1825 /* If a TLS symbol is accessed using IE at least once,
1826 there is no point to use dynamic model for it. */
1827 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1828 && (old_tls_type != GOT_TLS_GD
1829 || tls_type != GOT_TLS_IE))
1830 {
1831 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1832 tls_type = old_tls_type;
1833 else
1834 {
1835 (*_bfd_error_handler)
1836 (_("%B: `%s' accessed both as normal and thread local symbol"),
1837 abfd, h ? h->root.root.string : "<local>");
1838 return FALSE;
1839 }
1840 }
1841
1842 if (old_tls_type != tls_type)
1843 {
1844 if (h != NULL)
1845 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1846 else
1847 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1848 }
1849 }
1850
1851 if (htab->elf.sgot == NULL)
1852 {
1853 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1854 return FALSE;
1855 }
1856 break;
1857
1858 case R_TILEGX_TLS_GD_CALL:
1859 if (info->shared)
1860 {
1861 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1862 against __tls_get_addr. */
1863 struct bfd_link_hash_entry *bh = NULL;
1864 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1865 "__tls_get_addr", 0,
1866 bfd_und_section_ptr, 0,
1867 NULL, FALSE, FALSE,
1868 &bh))
1869 return FALSE;
1870 h = (struct elf_link_hash_entry *) bh;
1871 }
1872 else
1873 break;
1874 /* Fall through */
1875
1876 case R_TILEGX_JUMPOFF_X1_PLT:
1877 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
1878 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
1879 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
1880 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
1881 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
1882 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
1883 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
1884 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
1885 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
1886 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
1887 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
1888 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
1889 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
1890 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
1891 /* This symbol requires a procedure linkage table entry. We
1892 actually build the entry in adjust_dynamic_symbol,
1893 because this might be a case of linking PIC code without
1894 linking in any dynamic objects, in which case we don't
1895 need to generate a procedure linkage table after all. */
1896
1897 if (h != NULL)
1898 {
1899 h->needs_plt = 1;
1900 h->plt.refcount += 1;
1901 }
1902 break;
1903
1904 case R_TILEGX_64_PCREL:
1905 case R_TILEGX_32_PCREL:
1906 case R_TILEGX_16_PCREL:
1907 case R_TILEGX_8_PCREL:
1908 case R_TILEGX_IMM16_X0_HW0_PCREL:
1909 case R_TILEGX_IMM16_X1_HW0_PCREL:
1910 case R_TILEGX_IMM16_X0_HW1_PCREL:
1911 case R_TILEGX_IMM16_X1_HW1_PCREL:
1912 case R_TILEGX_IMM16_X0_HW2_PCREL:
1913 case R_TILEGX_IMM16_X1_HW2_PCREL:
1914 case R_TILEGX_IMM16_X0_HW3_PCREL:
1915 case R_TILEGX_IMM16_X1_HW3_PCREL:
1916 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1917 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1918 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1919 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1920 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1921 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1922 if (h != NULL)
1923 h->non_got_ref = 1;
1924
1925 if (h != NULL
1926 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1927 break;
1928 /* Fall through. */
1929
1930 case R_TILEGX_64:
1931 case R_TILEGX_32:
1932 case R_TILEGX_16:
1933 case R_TILEGX_8:
1934 case R_TILEGX_HW0:
1935 case R_TILEGX_HW1:
1936 case R_TILEGX_HW2:
1937 case R_TILEGX_HW3:
1938 case R_TILEGX_HW0_LAST:
1939 case R_TILEGX_HW1_LAST:
1940 case R_TILEGX_HW2_LAST:
1941 case R_TILEGX_COPY:
1942 case R_TILEGX_GLOB_DAT:
1943 case R_TILEGX_JMP_SLOT:
1944 case R_TILEGX_RELATIVE:
1945 case R_TILEGX_BROFF_X1:
1946 case R_TILEGX_JUMPOFF_X1:
1947 case R_TILEGX_IMM8_X0:
1948 case R_TILEGX_IMM8_Y0:
1949 case R_TILEGX_IMM8_X1:
1950 case R_TILEGX_IMM8_Y1:
1951 case R_TILEGX_DEST_IMM8_X1:
1952 case R_TILEGX_MT_IMM14_X1:
1953 case R_TILEGX_MF_IMM14_X1:
1954 case R_TILEGX_MMSTART_X0:
1955 case R_TILEGX_MMEND_X0:
1956 case R_TILEGX_SHAMT_X0:
1957 case R_TILEGX_SHAMT_X1:
1958 case R_TILEGX_SHAMT_Y0:
1959 case R_TILEGX_SHAMT_Y1:
1960 case R_TILEGX_IMM16_X0_HW0:
1961 case R_TILEGX_IMM16_X1_HW0:
1962 case R_TILEGX_IMM16_X0_HW1:
1963 case R_TILEGX_IMM16_X1_HW1:
1964 case R_TILEGX_IMM16_X0_HW2:
1965 case R_TILEGX_IMM16_X1_HW2:
1966 case R_TILEGX_IMM16_X0_HW3:
1967 case R_TILEGX_IMM16_X1_HW3:
1968 case R_TILEGX_IMM16_X0_HW0_LAST:
1969 case R_TILEGX_IMM16_X1_HW0_LAST:
1970 case R_TILEGX_IMM16_X0_HW1_LAST:
1971 case R_TILEGX_IMM16_X1_HW1_LAST:
1972 case R_TILEGX_IMM16_X0_HW2_LAST:
1973 case R_TILEGX_IMM16_X1_HW2_LAST:
1974 if (h != NULL)
1975 h->non_got_ref = 1;
1976
1977 r_tilegx_plt32:
1978 if (h != NULL && !info->shared)
1979 {
1980 /* We may need a .plt entry if the function this reloc
1981 refers to is in a shared lib. */
1982 h->plt.refcount += 1;
1983 }
1984
1985 /* If we are creating a shared library, and this is a reloc
1986 against a global symbol, or a non PC relative reloc
1987 against a local symbol, then we need to copy the reloc
1988 into the shared library. However, if we are linking with
1989 -Bsymbolic, we do not need to copy a reloc against a
1990 global symbol which is defined in an object we are
1991 including in the link (i.e., DEF_REGULAR is set). At
1992 this point we have not seen all the input files, so it is
1993 possible that DEF_REGULAR is not set now but will be set
1994 later (it is never cleared). In case of a weak definition,
1995 DEF_REGULAR may be cleared later by a strong definition in
1996 a shared library. We account for that possibility below by
1997 storing information in the relocs_copied field of the hash
1998 table entry. A similar situation occurs when creating
1999 shared libraries and symbol visibility changes render the
2000 symbol local.
2001
2002 If on the other hand, we are creating an executable, we
2003 may need to keep relocations for symbols satisfied by a
2004 dynamic library if we manage to avoid copy relocs for the
2005 symbol. */
2006 if ((info->shared
2007 && (sec->flags & SEC_ALLOC) != 0
2008 && (! tilegx_elf_howto_table[r_type].pc_relative
2009 || (h != NULL
2010 && (! info->symbolic
2011 || h->root.type == bfd_link_hash_defweak
2012 || !h->def_regular))))
2013 || (!info->shared
2014 && (sec->flags & SEC_ALLOC) != 0
2015 && h != NULL
2016 && (h->root.type == bfd_link_hash_defweak
2017 || !h->def_regular)))
2018 {
2019 struct tilegx_elf_dyn_relocs *p;
2020 struct tilegx_elf_dyn_relocs **head;
2021
2022 /* When creating a shared object, we must copy these
2023 relocs into the output file. We create a reloc
2024 section in dynobj and make room for the reloc. */
2025 if (sreloc == NULL)
2026 {
2027 sreloc = _bfd_elf_make_dynamic_reloc_section
2028 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
2029 /*rela?*/ TRUE);
2030
2031 if (sreloc == NULL)
2032 return FALSE;
2033 }
2034
2035 /* If this is a global symbol, we count the number of
2036 relocations we need for this symbol. */
2037 if (h != NULL)
2038 head =
2039 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs;
2040 else
2041 {
2042 /* Track dynamic relocs needed for local syms too.
2043 We really need local syms available to do this
2044 easily. Oh well. */
2045
2046 asection *s;
2047 void *vpp;
2048 Elf_Internal_Sym *isym;
2049
2050 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2051 abfd, r_symndx);
2052 if (isym == NULL)
2053 return FALSE;
2054
2055 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2056 if (s == NULL)
2057 s = sec;
2058
2059 vpp = &elf_section_data (s)->local_dynrel;
2060 head = (struct tilegx_elf_dyn_relocs **) vpp;
2061 }
2062
2063 p = *head;
2064 if (p == NULL || p->sec != sec)
2065 {
2066 bfd_size_type amt = sizeof *p;
2067 p = ((struct tilegx_elf_dyn_relocs *)
2068 bfd_alloc (htab->elf.dynobj, amt));
2069 if (p == NULL)
2070 return FALSE;
2071 p->next = *head;
2072 *head = p;
2073 p->sec = sec;
2074 p->count = 0;
2075 p->pc_count = 0;
2076 }
2077
2078 p->count += 1;
2079 if (tilegx_elf_howto_table[r_type].pc_relative)
2080 p->pc_count += 1;
2081 }
2082
2083 break;
2084
2085 case R_TILEGX_GNU_VTINHERIT:
2086 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2087 return FALSE;
2088 break;
2089
2090 case R_TILEGX_GNU_VTENTRY:
2091 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2092 return FALSE;
2093 break;
2094
2095 default:
2096 break;
2097 }
2098 }
2099
2100 return TRUE;
2101 }
2102
2103
2104 asection *
tilegx_elf_gc_mark_hook(asection * sec,struct bfd_link_info * info,Elf_Internal_Rela * rel,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)2105 tilegx_elf_gc_mark_hook (asection *sec,
2106 struct bfd_link_info *info,
2107 Elf_Internal_Rela *rel,
2108 struct elf_link_hash_entry *h,
2109 Elf_Internal_Sym *sym)
2110 {
2111 if (h != NULL)
2112 {
2113 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2114 {
2115 case R_TILEGX_GNU_VTINHERIT:
2116 case R_TILEGX_GNU_VTENTRY:
2117 return NULL;
2118 }
2119 }
2120
2121 /* FIXME: The test here, in check_relocs and in relocate_section
2122 dealing with TLS optimization, ought to be !info->executable. */
2123 if (info->shared)
2124 {
2125 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2126 {
2127 case R_TILEGX_TLS_GD_CALL:
2128 /* This reloc implicitly references __tls_get_addr. We know
2129 another reloc will reference the same symbol as the one
2130 on this reloc, so the real symbol and section will be
2131 gc marked when processing the other reloc. That lets
2132 us handle __tls_get_addr here. */
2133 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
2134 FALSE, FALSE, TRUE);
2135 BFD_ASSERT (h != NULL);
2136 h->mark = 1;
2137 if (h->u.weakdef != NULL)
2138 h->u.weakdef->mark = 1;
2139 sym = NULL;
2140 }
2141 }
2142
2143 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2144 }
2145
2146 /* Update the got entry reference counts for the section being removed. */
2147 bfd_boolean
tilegx_elf_gc_sweep_hook(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)2148 tilegx_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
2149 asection *sec, const Elf_Internal_Rela *relocs)
2150 {
2151 struct tilegx_elf_link_hash_table *htab;
2152 Elf_Internal_Shdr *symtab_hdr;
2153 struct elf_link_hash_entry **sym_hashes;
2154 bfd_signed_vma *local_got_refcounts;
2155 const Elf_Internal_Rela *rel, *relend;
2156
2157 if (info->relocatable)
2158 return TRUE;
2159
2160 BFD_ASSERT (is_tilegx_elf (abfd) || sec->reloc_count == 0);
2161
2162 elf_section_data (sec)->local_dynrel = NULL;
2163
2164 htab = tilegx_elf_hash_table (info);
2165 BFD_ASSERT (htab != NULL);
2166 symtab_hdr = &elf_symtab_hdr (abfd);
2167 sym_hashes = elf_sym_hashes (abfd);
2168 local_got_refcounts = elf_local_got_refcounts (abfd);
2169
2170 relend = relocs + sec->reloc_count;
2171 for (rel = relocs; rel < relend; rel++)
2172 {
2173 unsigned long r_symndx;
2174 unsigned int r_type;
2175 struct elf_link_hash_entry *h = NULL;
2176
2177 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2178 if (r_symndx >= symtab_hdr->sh_info)
2179 {
2180 struct tilegx_elf_link_hash_entry *eh;
2181 struct tilegx_elf_dyn_relocs **pp;
2182 struct tilegx_elf_dyn_relocs *p;
2183
2184 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2185 while (h->root.type == bfd_link_hash_indirect
2186 || h->root.type == bfd_link_hash_warning)
2187 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2188 eh = (struct tilegx_elf_link_hash_entry *) h;
2189 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2190 if (p->sec == sec)
2191 {
2192 /* Everything must go for SEC. */
2193 *pp = p->next;
2194 break;
2195 }
2196 }
2197
2198 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2199 r_type = tilegx_elf_tls_transition (info, r_type, h != NULL,
2200 sec->sec_flg0);
2201 switch (r_type)
2202 {
2203 case R_TILEGX_IMM16_X0_HW0_GOT:
2204 case R_TILEGX_IMM16_X1_HW0_GOT:
2205 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
2206 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
2207 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
2208 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
2209 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
2210 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
2211 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
2212 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
2213 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
2214 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
2215 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
2216 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
2217 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
2218 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
2219 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
2220 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
2221 if (h != NULL)
2222 {
2223 if (h->got.refcount > 0)
2224 h->got.refcount--;
2225 }
2226 else
2227 {
2228 if (local_got_refcounts &&
2229 local_got_refcounts[r_symndx] > 0)
2230 local_got_refcounts[r_symndx]--;
2231 }
2232 break;
2233
2234 case R_TILEGX_64_PCREL:
2235 case R_TILEGX_32_PCREL:
2236 case R_TILEGX_16_PCREL:
2237 case R_TILEGX_8_PCREL:
2238 case R_TILEGX_IMM16_X0_HW0_PCREL:
2239 case R_TILEGX_IMM16_X1_HW0_PCREL:
2240 case R_TILEGX_IMM16_X0_HW1_PCREL:
2241 case R_TILEGX_IMM16_X1_HW1_PCREL:
2242 case R_TILEGX_IMM16_X0_HW2_PCREL:
2243 case R_TILEGX_IMM16_X1_HW2_PCREL:
2244 case R_TILEGX_IMM16_X0_HW3_PCREL:
2245 case R_TILEGX_IMM16_X1_HW3_PCREL:
2246 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
2247 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
2248 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
2249 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
2250 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
2251 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
2252 if (h != NULL
2253 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2254 break;
2255 /* Fall through. */
2256
2257 case R_TILEGX_64:
2258 case R_TILEGX_32:
2259 case R_TILEGX_16:
2260 case R_TILEGX_8:
2261 case R_TILEGX_HW0:
2262 case R_TILEGX_HW1:
2263 case R_TILEGX_HW2:
2264 case R_TILEGX_HW3:
2265 case R_TILEGX_HW0_LAST:
2266 case R_TILEGX_HW1_LAST:
2267 case R_TILEGX_HW2_LAST:
2268 case R_TILEGX_COPY:
2269 case R_TILEGX_GLOB_DAT:
2270 case R_TILEGX_JMP_SLOT:
2271 case R_TILEGX_RELATIVE:
2272 case R_TILEGX_BROFF_X1:
2273 case R_TILEGX_JUMPOFF_X1:
2274 case R_TILEGX_IMM8_X0:
2275 case R_TILEGX_IMM8_Y0:
2276 case R_TILEGX_IMM8_X1:
2277 case R_TILEGX_IMM8_Y1:
2278 case R_TILEGX_DEST_IMM8_X1:
2279 case R_TILEGX_MT_IMM14_X1:
2280 case R_TILEGX_MF_IMM14_X1:
2281 case R_TILEGX_MMSTART_X0:
2282 case R_TILEGX_MMEND_X0:
2283 case R_TILEGX_SHAMT_X0:
2284 case R_TILEGX_SHAMT_X1:
2285 case R_TILEGX_SHAMT_Y0:
2286 case R_TILEGX_SHAMT_Y1:
2287 case R_TILEGX_IMM16_X0_HW0:
2288 case R_TILEGX_IMM16_X1_HW0:
2289 case R_TILEGX_IMM16_X0_HW1:
2290 case R_TILEGX_IMM16_X1_HW1:
2291 case R_TILEGX_IMM16_X0_HW2:
2292 case R_TILEGX_IMM16_X1_HW2:
2293 case R_TILEGX_IMM16_X0_HW3:
2294 case R_TILEGX_IMM16_X1_HW3:
2295 case R_TILEGX_IMM16_X0_HW0_LAST:
2296 case R_TILEGX_IMM16_X1_HW0_LAST:
2297 case R_TILEGX_IMM16_X0_HW1_LAST:
2298 case R_TILEGX_IMM16_X1_HW1_LAST:
2299 case R_TILEGX_IMM16_X0_HW2_LAST:
2300 case R_TILEGX_IMM16_X1_HW2_LAST:
2301 if (info->shared)
2302 break;
2303 /* Fall through. */
2304
2305 case R_TILEGX_JUMPOFF_X1_PLT:
2306 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
2307 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
2308 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
2309 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
2310 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
2311 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
2312 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
2313 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
2314 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
2315 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
2316 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
2317 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
2318 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
2319 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
2320 if (h != NULL)
2321 {
2322 if (h->plt.refcount > 0)
2323 h->plt.refcount--;
2324 }
2325 break;
2326
2327 default:
2328 break;
2329 }
2330 }
2331
2332 return TRUE;
2333 }
2334
2335 /* Adjust a symbol defined by a dynamic object and referenced by a
2336 regular object. The current definition is in some section of the
2337 dynamic object, but we're not including those sections. We have to
2338 change the definition to something the rest of the link can
2339 understand. */
2340
2341 bfd_boolean
tilegx_elf_adjust_dynamic_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * h)2342 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2343 struct elf_link_hash_entry *h)
2344 {
2345 struct tilegx_elf_link_hash_table *htab;
2346 struct tilegx_elf_link_hash_entry * eh;
2347 struct tilegx_elf_dyn_relocs *p;
2348 bfd *dynobj;
2349 asection *s;
2350
2351 htab = tilegx_elf_hash_table (info);
2352 BFD_ASSERT (htab != NULL);
2353
2354 dynobj = htab->elf.dynobj;
2355
2356 /* Make sure we know what is going on here. */
2357 BFD_ASSERT (dynobj != NULL
2358 && (h->needs_plt
2359 || h->u.weakdef != NULL
2360 || (h->def_dynamic
2361 && h->ref_regular
2362 && !h->def_regular)));
2363
2364 /* If this is a function, put it in the procedure linkage table. We
2365 will fill in the contents of the procedure linkage table later
2366 (although we could actually do it here). */
2367 if (h->type == STT_FUNC || h->needs_plt)
2368 {
2369 if (h->plt.refcount <= 0
2370 || SYMBOL_CALLS_LOCAL (info, h)
2371 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2372 && h->root.type == bfd_link_hash_undefweak))
2373 {
2374 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2375 reloc in an input file, but the symbol was never referred
2376 to by a dynamic object, or if all references were garbage
2377 collected. In such a case, we don't actually need to build
2378 a procedure linkage table, and we can just do a
2379 R_TILEGX_JUMPOFF_X1 relocation instead. */
2380 h->plt.offset = (bfd_vma) -1;
2381 h->needs_plt = 0;
2382 }
2383
2384 return TRUE;
2385 }
2386 else
2387 h->plt.offset = (bfd_vma) -1;
2388
2389 /* If this is a weak symbol, and there is a real definition, the
2390 processor independent code will have arranged for us to see the
2391 real definition first, and we can just use the same value. */
2392 if (h->u.weakdef != NULL)
2393 {
2394 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2395 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2396 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2397 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2398 return TRUE;
2399 }
2400
2401 /* This is a reference to a symbol defined by a dynamic object which
2402 is not a function. */
2403
2404 /* If we are creating a shared library, we must presume that the
2405 only references to the symbol are via the global offset table.
2406 For such cases we need not do anything here; the relocations will
2407 be handled correctly by relocate_section. */
2408 if (info->shared)
2409 return TRUE;
2410
2411 /* If there are no references to this symbol that do not use the
2412 GOT, we don't need to generate a copy reloc. */
2413 if (!h->non_got_ref)
2414 return TRUE;
2415
2416 /* If -z nocopyreloc was given, we won't generate them either. */
2417 if (info->nocopyreloc)
2418 {
2419 h->non_got_ref = 0;
2420 return TRUE;
2421 }
2422
2423 eh = (struct tilegx_elf_link_hash_entry *) h;
2424 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2425 {
2426 s = p->sec->output_section;
2427 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2428 break;
2429 }
2430
2431 /* If we didn't find any dynamic relocs in read-only sections, then
2432 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2433 if (p == NULL)
2434 {
2435 h->non_got_ref = 0;
2436 return TRUE;
2437 }
2438
2439 /* We must allocate the symbol in our .dynbss section, which will
2440 become part of the .bss section of the executable. There will be
2441 an entry for this symbol in the .dynsym section. The dynamic
2442 object will contain position independent code, so all references
2443 from the dynamic object to this symbol will go through the global
2444 offset table. The dynamic linker will use the .dynsym entry to
2445 determine the address it must put in the global offset table, so
2446 both the dynamic object and the regular object will refer to the
2447 same memory location for the variable. */
2448
2449 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2450 to copy the initial value out of the dynamic object and into the
2451 runtime process image. We need to remember the offset into the
2452 .rel.bss section we are going to use. */
2453 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2454 {
2455 htab->srelbss->size += TILEGX_ELF_RELA_BYTES (htab);
2456 h->needs_copy = 1;
2457 }
2458
2459 return _bfd_elf_adjust_dynamic_copy (h, htab->sdynbss);
2460 }
2461
2462 /* Allocate space in .plt, .got and associated reloc sections for
2463 dynamic relocs. */
2464
2465 static bfd_boolean
allocate_dynrelocs(struct elf_link_hash_entry * h,void * inf)2466 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2467 {
2468 struct bfd_link_info *info;
2469 struct tilegx_elf_link_hash_table *htab;
2470 struct tilegx_elf_link_hash_entry *eh;
2471 struct tilegx_elf_dyn_relocs *p;
2472
2473 if (h->root.type == bfd_link_hash_indirect)
2474 return TRUE;
2475
2476 info = (struct bfd_link_info *) inf;
2477 htab = tilegx_elf_hash_table (info);
2478 BFD_ASSERT (htab != NULL);
2479
2480 if (htab->elf.dynamic_sections_created
2481 && h->plt.refcount > 0)
2482 {
2483 /* Make sure this symbol is output as a dynamic symbol.
2484 Undefined weak syms won't yet be marked as dynamic. */
2485 if (h->dynindx == -1
2486 && !h->forced_local)
2487 {
2488 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2489 return FALSE;
2490 }
2491
2492 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2493 {
2494 asection *s = htab->elf.splt;
2495
2496 /* Allocate room for the header and tail. */
2497 if (s->size == 0)
2498 {
2499 s->size = PLT_ENTRY_SIZE;
2500 }
2501
2502 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE;
2503
2504 /* If this symbol is not defined in a regular file, and we are
2505 not generating a shared library, then set the symbol to this
2506 location in the .plt. This is required to make function
2507 pointers compare as equal between the normal executable and
2508 the shared library. */
2509 if (! info->shared
2510 && !h->def_regular)
2511 {
2512 h->root.u.def.section = s;
2513 h->root.u.def.value = h->plt.offset;
2514 }
2515
2516 /* Make room for this entry. */
2517 s->size += PLT_ENTRY_SIZE;
2518
2519 /* We also need to make an entry in the .got.plt section. */
2520 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2521
2522 /* We also need to make an entry in the .rela.plt section. */
2523 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2524 }
2525 else
2526 {
2527 h->plt.offset = (bfd_vma) -1;
2528 h->needs_plt = 0;
2529 }
2530 }
2531 else
2532 {
2533 h->plt.offset = (bfd_vma) -1;
2534 h->needs_plt = 0;
2535 }
2536
2537 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2538 requiring no TLS entry. */
2539 if (h->got.refcount > 0
2540 && !htab->disable_le_transition
2541 && !info->shared
2542 && h->dynindx == -1
2543 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2544 h->got.offset = (bfd_vma) -1;
2545 else if (h->got.refcount > 0)
2546 {
2547 asection *s;
2548 bfd_boolean dyn;
2549 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2550
2551 /* Make sure this symbol is output as a dynamic symbol.
2552 Undefined weak syms won't yet be marked as dynamic. */
2553 if (h->dynindx == -1
2554 && !h->forced_local)
2555 {
2556 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2557 return FALSE;
2558 }
2559
2560 s = htab->elf.sgot;
2561 h->got.offset = s->size;
2562 s->size += TILEGX_ELF_WORD_BYTES (htab);
2563 /* TLS_GD entries need 2 consecutive GOT slots. */
2564 if (tls_type == GOT_TLS_GD)
2565 s->size += TILEGX_ELF_WORD_BYTES (htab);
2566 dyn = htab->elf.dynamic_sections_created;
2567 /* TLS_IE needs one dynamic relocation,
2568 TLS_GD needs two if local symbol and two if global. */
2569 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2570 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2571 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2572 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2573 }
2574 else
2575 h->got.offset = (bfd_vma) -1;
2576
2577 eh = (struct tilegx_elf_link_hash_entry *) h;
2578 if (eh->dyn_relocs == NULL)
2579 return TRUE;
2580
2581 /* In the shared -Bsymbolic case, discard space allocated for
2582 dynamic pc-relative relocs against symbols which turn out to be
2583 defined in regular objects. For the normal shared case, discard
2584 space for pc-relative relocs that have become local due to symbol
2585 visibility changes. */
2586
2587 if (info->shared)
2588 {
2589 if (SYMBOL_CALLS_LOCAL (info, h))
2590 {
2591 struct tilegx_elf_dyn_relocs **pp;
2592
2593 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2594 {
2595 p->count -= p->pc_count;
2596 p->pc_count = 0;
2597 if (p->count == 0)
2598 *pp = p->next;
2599 else
2600 pp = &p->next;
2601 }
2602 }
2603
2604 /* Also discard relocs on undefined weak syms with non-default
2605 visibility. */
2606 if (eh->dyn_relocs != NULL
2607 && h->root.type == bfd_link_hash_undefweak)
2608 {
2609 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2610 eh->dyn_relocs = NULL;
2611
2612 /* Make sure undefined weak symbols are output as a dynamic
2613 symbol in PIEs. */
2614 else if (h->dynindx == -1
2615 && !h->forced_local)
2616 {
2617 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2618 return FALSE;
2619 }
2620 }
2621 }
2622 else
2623 {
2624 /* For the non-shared case, discard space for relocs against
2625 symbols which turn out to need copy relocs or are not
2626 dynamic. */
2627
2628 if (!h->non_got_ref
2629 && ((h->def_dynamic
2630 && !h->def_regular)
2631 || (htab->elf.dynamic_sections_created
2632 && (h->root.type == bfd_link_hash_undefweak
2633 || h->root.type == bfd_link_hash_undefined))))
2634 {
2635 /* Make sure this symbol is output as a dynamic symbol.
2636 Undefined weak syms won't yet be marked as dynamic. */
2637 if (h->dynindx == -1
2638 && !h->forced_local)
2639 {
2640 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2641 return FALSE;
2642 }
2643
2644 /* If that succeeded, we know we'll be keeping all the
2645 relocs. */
2646 if (h->dynindx != -1)
2647 goto keep;
2648 }
2649
2650 eh->dyn_relocs = NULL;
2651
2652 keep: ;
2653 }
2654
2655 /* Finally, allocate space. */
2656 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2657 {
2658 asection *sreloc = elf_section_data (p->sec)->sreloc;
2659 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2660 }
2661
2662 return TRUE;
2663 }
2664
2665 /* Find any dynamic relocs that apply to read-only sections. */
2666
2667 static bfd_boolean
readonly_dynrelocs(struct elf_link_hash_entry * h,void * inf)2668 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2669 {
2670 struct tilegx_elf_link_hash_entry *eh;
2671 struct tilegx_elf_dyn_relocs *p;
2672
2673 eh = (struct tilegx_elf_link_hash_entry *) h;
2674 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2675 {
2676 asection *s = p->sec->output_section;
2677
2678 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2679 {
2680 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2681
2682 info->flags |= DF_TEXTREL;
2683
2684 /* Not an error, just cut short the traversal. */
2685 return FALSE;
2686 }
2687 }
2688 return TRUE;
2689 }
2690
2691 /* Return true if the dynamic symbol for a given section should be
2692 omitted when creating a shared library. */
2693
2694 bfd_boolean
tilegx_elf_omit_section_dynsym(bfd * output_bfd,struct bfd_link_info * info,asection * p)2695 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2696 struct bfd_link_info *info,
2697 asection *p)
2698 {
2699 /* We keep the .got section symbol so that explicit relocations
2700 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2701 can be turned into relocations against the .got symbol. */
2702 if (strcmp (p->name, ".got") == 0)
2703 return FALSE;
2704
2705 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2706 }
2707
2708 bfd_boolean
tilegx_elf_size_dynamic_sections(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info)2709 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2710 struct bfd_link_info *info)
2711 {
2712 struct tilegx_elf_link_hash_table *htab;
2713 bfd *dynobj;
2714 asection *s;
2715 bfd *ibfd;
2716
2717 htab = tilegx_elf_hash_table (info);
2718 BFD_ASSERT (htab != NULL);
2719 dynobj = htab->elf.dynobj;
2720 BFD_ASSERT (dynobj != NULL);
2721
2722 if (elf_hash_table (info)->dynamic_sections_created)
2723 {
2724 /* Set the contents of the .interp section to the interpreter. */
2725 if (info->executable)
2726 {
2727 s = bfd_get_linker_section (dynobj, ".interp");
2728 BFD_ASSERT (s != NULL);
2729 s->size = strlen (htab->dynamic_interpreter) + 1;
2730 s->contents = (unsigned char *) htab->dynamic_interpreter;
2731 }
2732 }
2733
2734 /* Set up .got offsets for local syms, and space for local dynamic
2735 relocs. */
2736 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2737 {
2738 bfd_signed_vma *local_got;
2739 bfd_signed_vma *end_local_got;
2740 char *local_tls_type;
2741 bfd_size_type locsymcount;
2742 Elf_Internal_Shdr *symtab_hdr;
2743 asection *srel;
2744
2745 if (! is_tilegx_elf (ibfd))
2746 continue;
2747
2748 for (s = ibfd->sections; s != NULL; s = s->next)
2749 {
2750 struct tilegx_elf_dyn_relocs *p;
2751
2752 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2753 {
2754 if (!bfd_is_abs_section (p->sec)
2755 && bfd_is_abs_section (p->sec->output_section))
2756 {
2757 /* Input section has been discarded, either because
2758 it is a copy of a linkonce section or due to
2759 linker script /DISCARD/, so we'll be discarding
2760 the relocs too. */
2761 }
2762 else if (p->count != 0)
2763 {
2764 srel = elf_section_data (p->sec)->sreloc;
2765 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2766 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2767 info->flags |= DF_TEXTREL;
2768 }
2769 }
2770 }
2771
2772 local_got = elf_local_got_refcounts (ibfd);
2773 if (!local_got)
2774 continue;
2775
2776 symtab_hdr = &elf_symtab_hdr (ibfd);
2777 locsymcount = symtab_hdr->sh_info;
2778 end_local_got = local_got + locsymcount;
2779 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2780 s = htab->elf.sgot;
2781 srel = htab->elf.srelgot;
2782 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2783 {
2784 if (*local_got > 0)
2785 {
2786 *local_got = s->size;
2787 s->size += TILEGX_ELF_WORD_BYTES (htab);
2788 if (*local_tls_type == GOT_TLS_GD)
2789 s->size += TILEGX_ELF_WORD_BYTES (htab);
2790 if (info->shared
2791 || *local_tls_type == GOT_TLS_GD
2792 || *local_tls_type == GOT_TLS_IE)
2793 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2794 }
2795 else
2796 *local_got = (bfd_vma) -1;
2797 }
2798 }
2799
2800 /* Allocate global sym .plt and .got entries, and space for global
2801 sym dynamic relocs. */
2802 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2803
2804 if (elf_hash_table (info)->dynamic_sections_created)
2805 {
2806 /* If the .got section is more than 0x8000 bytes, we add
2807 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2808 bit relocations have a greater chance of working. */
2809 if (htab->elf.sgot->size >= 0x8000
2810 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2811 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2812 }
2813
2814 if (htab->elf.sgotplt)
2815 {
2816 struct elf_link_hash_entry *got;
2817 got = elf_link_hash_lookup (elf_hash_table (info),
2818 "_GLOBAL_OFFSET_TABLE_",
2819 FALSE, FALSE, FALSE);
2820
2821 /* Don't allocate .got.plt section if there are no GOT nor PLT
2822 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2823 if ((got == NULL
2824 || !got->ref_regular_nonweak)
2825 && (htab->elf.sgotplt->size
2826 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2827 && (htab->elf.splt == NULL
2828 || htab->elf.splt->size == 0)
2829 && (htab->elf.sgot == NULL
2830 || (htab->elf.sgot->size
2831 == get_elf_backend_data (output_bfd)->got_header_size)))
2832 htab->elf.sgotplt->size = 0;
2833 }
2834
2835 /* The check_relocs and adjust_dynamic_symbol entry points have
2836 determined the sizes of the various dynamic sections. Allocate
2837 memory for them. */
2838 for (s = dynobj->sections; s != NULL; s = s->next)
2839 {
2840 if ((s->flags & SEC_LINKER_CREATED) == 0)
2841 continue;
2842
2843 if (s == htab->elf.splt
2844 || s == htab->elf.sgot
2845 || s == htab->elf.sgotplt
2846 || s == htab->sdynbss)
2847 {
2848 /* Strip this section if we don't need it; see the
2849 comment below. */
2850 }
2851 else if (strncmp (s->name, ".rela", 5) == 0)
2852 {
2853 if (s->size != 0)
2854 {
2855 /* We use the reloc_count field as a counter if we need
2856 to copy relocs into the output file. */
2857 s->reloc_count = 0;
2858 }
2859 }
2860 else
2861 {
2862 /* It's not one of our sections. */
2863 continue;
2864 }
2865
2866 if (s->size == 0)
2867 {
2868 /* If we don't need this section, strip it from the
2869 output file. This is mostly to handle .rela.bss and
2870 .rela.plt. We must create both sections in
2871 create_dynamic_sections, because they must be created
2872 before the linker maps input sections to output
2873 sections. The linker does that before
2874 adjust_dynamic_symbol is called, and it is that
2875 function which decides whether anything needs to go
2876 into these sections. */
2877 s->flags |= SEC_EXCLUDE;
2878 continue;
2879 }
2880
2881 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2882 continue;
2883
2884 /* Allocate memory for the section contents. Zero the memory
2885 for the benefit of .rela.plt, which has 4 unused entries
2886 at the beginning, and we don't want garbage. */
2887 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2888 if (s->contents == NULL)
2889 return FALSE;
2890 }
2891
2892 if (elf_hash_table (info)->dynamic_sections_created)
2893 {
2894 /* Add some entries to the .dynamic section. We fill in the
2895 values later, in tilegx_elf_finish_dynamic_sections, but we
2896 must add the entries now so that we get the correct size for
2897 the .dynamic section. The DT_DEBUG entry is filled in by the
2898 dynamic linker and used by the debugger. */
2899 #define add_dynamic_entry(TAG, VAL) \
2900 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2901
2902 if (info->executable)
2903 {
2904 if (!add_dynamic_entry (DT_DEBUG, 0))
2905 return FALSE;
2906 }
2907
2908 if (htab->elf.srelplt->size != 0)
2909 {
2910 if (!add_dynamic_entry (DT_PLTGOT, 0)
2911 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2912 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2913 || !add_dynamic_entry (DT_JMPREL, 0))
2914 return FALSE;
2915 }
2916
2917 if (!add_dynamic_entry (DT_RELA, 0)
2918 || !add_dynamic_entry (DT_RELASZ, 0)
2919 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab)))
2920 return FALSE;
2921
2922 /* If any dynamic relocs apply to a read-only section,
2923 then we need a DT_TEXTREL entry. */
2924 if ((info->flags & DF_TEXTREL) == 0)
2925 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2926
2927 if (info->flags & DF_TEXTREL)
2928 {
2929 if (!add_dynamic_entry (DT_TEXTREL, 0))
2930 return FALSE;
2931 }
2932 }
2933 #undef add_dynamic_entry
2934
2935 return TRUE;
2936 }
2937
2938 /* Return the base VMA address which should be subtracted from real addresses
2939 when resolving @dtpoff relocation.
2940 This is PT_TLS segment p_vaddr. */
2941
2942 static bfd_vma
dtpoff_base(struct bfd_link_info * info)2943 dtpoff_base (struct bfd_link_info *info)
2944 {
2945 /* If tls_sec is NULL, we should have signalled an error already. */
2946 if (elf_hash_table (info)->tls_sec == NULL)
2947 return 0;
2948 return elf_hash_table (info)->tls_sec->vma;
2949 }
2950
2951 /* Return the relocation value for @tpoff relocation. */
2952
2953 static bfd_vma
tpoff(struct bfd_link_info * info,bfd_vma address)2954 tpoff (struct bfd_link_info *info, bfd_vma address)
2955 {
2956 struct elf_link_hash_table *htab = elf_hash_table (info);
2957
2958 /* If tls_sec is NULL, we should have signalled an error already. */
2959 if (htab->tls_sec == NULL)
2960 return 0;
2961
2962 return (address - htab->tls_sec->vma);
2963 }
2964
2965 /* Copy SIZE bits from FROM to TO at address ADDR. */
2966
2967 static void
tilegx_copy_bits(bfd_byte * addr,int from,int to,int size)2968 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2969 {
2970 int i;
2971 for (i = 0; i < size; i++)
2972 {
2973 int from_byte = (from + i) / 8;
2974 int from_bit = (from + i) % 8;
2975 int to_byte = (to + i) / 8;
2976 int to_bit = (to + i) % 8;
2977 bfd_byte to_mask = 1 << to_bit;
2978 addr[to_byte] = (addr[to_byte] & ~to_mask)
2979 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2980 }
2981 }
2982
2983 /* Replace the MASK bits in ADDR with those in INSN, for the next
2984 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2985
2986 static void
tilegx_replace_insn(bfd_byte * addr,const bfd_byte * mask,const bfd_byte * insn)2987 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2988 const bfd_byte *insn)
2989 {
2990 int i;
2991 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2992 {
2993 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2994 }
2995 }
2996
2997 /* Mask to extract the bits corresponding to an instruction in a
2998 specific pipe of a bundle. */
2999 static const bfd_byte insn_mask_X1[] = {
3000 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
3001 };
3002
3003 /* Mask to extract the bits corresponding to an instruction in a
3004 specific pipe of a bundle, minus the destination operand and the
3005 first source operand. */
3006 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
3007 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
3008 };
3009
3010 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
3011 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
3012 };
3013
3014 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
3015 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
3016 };
3017 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
3018 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
3019 };
3020
3021 /* Mask to extract the bits corresponding to an instruction in a
3022 specific pipe of a bundle, minus the register operands. */
3023 static const bfd_byte insn_mask_X0_no_operand[] = {
3024 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
3025 };
3026
3027 static const bfd_byte insn_mask_X1_no_operand[] = {
3028 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
3029 };
3030
3031 static const bfd_byte insn_mask_Y0_no_operand[] = {
3032 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
3033 };
3034
3035 static const bfd_byte insn_mask_Y1_no_operand[] = {
3036 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
3037 };
3038
3039 /* Various instructions synthesized to support tls references. */
3040
3041 /* ld r0, r0 in the X1 pipe, used for tls ie. */
3042 static const bfd_byte insn_tls_ie_ld_X1[] = {
3043 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
3044 };
3045
3046 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
3047 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
3048 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
3049 };
3050
3051 /* add r0, r0, tp in various pipes, used for tls ie. */
3052 static const bfd_byte insn_tls_ie_add_X0X1[] = {
3053 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
3054 };
3055 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
3056 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
3057 };
3058
3059 /* addx r0, r0, tp in various pipes, used for tls ie. */
3060 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
3061 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
3062 };
3063 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
3064 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
3065 };
3066
3067 /* move r0, r0 in various pipes, used for tls gd. */
3068 static const bfd_byte insn_tls_gd_add_X0X1[] = {
3069 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
3070 };
3071 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
3072 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
3073 };
3074
3075 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
3076 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
3077
3078 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
3079 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
3080
3081 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
3082 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
3083
3084 /* Relocate an TILEGX ELF section.
3085
3086 The RELOCATE_SECTION function is called by the new ELF backend linker
3087 to handle the relocations for a section.
3088
3089 The relocs are always passed as Rela structures.
3090
3091 This function is responsible for adjusting the section contents as
3092 necessary, and (if generating a relocatable output file) adjusting
3093 the reloc addend as necessary.
3094
3095 This function does not have to worry about setting the reloc
3096 address or the reloc symbol index.
3097
3098 LOCAL_SYMS is a pointer to the swapped in local symbols.
3099
3100 LOCAL_SECTIONS is an array giving the section in the input file
3101 corresponding to the st_shndx field of each local symbol.
3102
3103 The global hash table entry for the global symbols can be found
3104 via elf_sym_hashes (input_bfd).
3105
3106 When generating relocatable output, this function must handle
3107 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3108 going to be the section symbol corresponding to the output
3109 section, which means that the addend must be adjusted
3110 accordingly. */
3111
3112 bfd_boolean
tilegx_elf_relocate_section(bfd * output_bfd,struct bfd_link_info * info,bfd * input_bfd,asection * input_section,bfd_byte * contents,Elf_Internal_Rela * relocs,Elf_Internal_Sym * local_syms,asection ** local_sections)3113 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3114 bfd *input_bfd, asection *input_section,
3115 bfd_byte *contents, Elf_Internal_Rela *relocs,
3116 Elf_Internal_Sym *local_syms,
3117 asection **local_sections)
3118 {
3119 struct tilegx_elf_link_hash_table *htab;
3120 Elf_Internal_Shdr *symtab_hdr;
3121 struct elf_link_hash_entry **sym_hashes;
3122 bfd_vma *local_got_offsets;
3123 bfd_vma got_base;
3124 asection *sreloc;
3125 Elf_Internal_Rela *rel;
3126 Elf_Internal_Rela *relend;
3127 int num_relocs;
3128
3129 htab = tilegx_elf_hash_table (info);
3130 BFD_ASSERT (htab != NULL);
3131 symtab_hdr = &elf_symtab_hdr (input_bfd);
3132 sym_hashes = elf_sym_hashes (input_bfd);
3133 local_got_offsets = elf_local_got_offsets (input_bfd);
3134
3135 if (elf_hash_table (info)->hgot == NULL)
3136 got_base = 0;
3137 else
3138 got_base = elf_hash_table (info)->hgot->root.u.def.value;
3139
3140 sreloc = elf_section_data (input_section)->sreloc;
3141
3142 rel = relocs;
3143 num_relocs = input_section->reloc_count;
3144 relend = relocs + num_relocs;
3145 for (; rel < relend; rel++)
3146 {
3147 int r_type, tls_type;
3148 bfd_boolean is_tls_iele, is_tls_le;
3149 reloc_howto_type *howto;
3150 unsigned long r_symndx;
3151 struct elf_link_hash_entry *h;
3152 Elf_Internal_Sym *sym;
3153 tilegx_create_func create_func;
3154 asection *sec;
3155 bfd_vma relocation;
3156 bfd_reloc_status_type r;
3157 const char *name;
3158 bfd_vma off;
3159 bfd_boolean is_plt = FALSE;
3160
3161 bfd_boolean unresolved_reloc;
3162
3163 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
3164 if (r_type == R_TILEGX_GNU_VTINHERIT
3165 || r_type == R_TILEGX_GNU_VTENTRY)
3166 continue;
3167
3168 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
3169 {
3170 /* Not clear if we need to check here, but just be paranoid. */
3171 (*_bfd_error_handler)
3172 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3173 input_bfd, r_type, input_section);
3174 bfd_set_error (bfd_error_bad_value);
3175 return FALSE;
3176 }
3177
3178 howto = tilegx_elf_howto_table + r_type;
3179
3180 /* This is a final link. */
3181 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
3182 h = NULL;
3183 sym = NULL;
3184 sec = NULL;
3185 unresolved_reloc = FALSE;
3186 if (r_symndx < symtab_hdr->sh_info)
3187 {
3188 sym = local_syms + r_symndx;
3189 sec = local_sections[r_symndx];
3190 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3191 }
3192 else
3193 {
3194 bfd_boolean warned ATTRIBUTE_UNUSED;
3195 bfd_boolean ignored ATTRIBUTE_UNUSED;
3196
3197 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3198 r_symndx, symtab_hdr, sym_hashes,
3199 h, sec, relocation,
3200 unresolved_reloc, warned, ignored);
3201 if (warned)
3202 {
3203 /* To avoid generating warning messages about truncated
3204 relocations, set the relocation's address to be the same as
3205 the start of this section. */
3206 if (input_section->output_section != NULL)
3207 relocation = input_section->output_section->vma;
3208 else
3209 relocation = 0;
3210 }
3211 }
3212
3213 if (sec != NULL && discarded_section (sec))
3214 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3215 rel, 1, relend, howto, 0, contents);
3216
3217 if (info->relocatable)
3218 continue;
3219
3220 if (h != NULL)
3221 name = h->root.root.string;
3222 else
3223 {
3224 name = (bfd_elf_string_from_elf_section
3225 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3226 if (name == NULL || *name == '\0')
3227 name = bfd_section_name (input_bfd, sec);
3228 }
3229
3230 switch (r_type)
3231 {
3232 case R_TILEGX_TLS_GD_CALL:
3233 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3234 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3235 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3236 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3237 case R_TILEGX_IMM8_X0_TLS_ADD:
3238 case R_TILEGX_IMM8_Y0_TLS_ADD:
3239 case R_TILEGX_IMM8_X1_TLS_ADD:
3240 case R_TILEGX_IMM8_Y1_TLS_ADD:
3241 tls_type = GOT_UNKNOWN;
3242 if (h == NULL && local_got_offsets)
3243 tls_type =
3244 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3245 else if (h != NULL)
3246 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3247
3248 is_tls_iele = (! info->shared || tls_type == GOT_TLS_IE);
3249 is_tls_le = is_tls_iele && (!input_section->sec_flg0
3250 && !info->shared
3251 && (h == NULL || h->dynindx == -1));
3252
3253 if (r_type == R_TILEGX_TLS_GD_CALL)
3254 {
3255 if (is_tls_le)
3256 {
3257 /* GD -> LE */
3258 tilegx_replace_insn (contents + rel->r_offset,
3259 insn_mask_X1, insn_move_X0X1);
3260 continue;
3261 }
3262 else if (is_tls_iele)
3263 {
3264 /* GD -> IE */
3265 if (ABI_64_P (output_bfd))
3266 tilegx_replace_insn (contents + rel->r_offset,
3267 insn_mask_X1, insn_tls_ie_ld_X1);
3268 else
3269 tilegx_replace_insn (contents + rel->r_offset,
3270 insn_mask_X1, insn_tls_ie_ld4s_X1);
3271 continue;
3272 }
3273
3274 /* GD -> GD */
3275 h = (struct elf_link_hash_entry *)
3276 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3277 FALSE, TRUE);
3278 BFD_ASSERT (h != NULL);
3279 r_type = R_TILEGX_JUMPOFF_X1_PLT;
3280 howto = tilegx_elf_howto_table + r_type;
3281 }
3282 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3283 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
3284 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
3285 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
3286 {
3287 bfd_boolean is_pipe0 =
3288 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3289 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
3290 bfd_boolean is_X0X1 =
3291 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3292 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
3293 int dest_begin = is_pipe0 ? 0 : 31;
3294 int src_begin;
3295 const bfd_byte *insn;
3296 const bfd_byte *mask = NULL;
3297
3298 if (is_tls_le)
3299 {
3300 /* 1. copy dest operand into the first source operand.
3301 2. change the opcode to "move". */
3302 src_begin = is_pipe0 ? 6 : 37;
3303 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
3304
3305 switch (r_type)
3306 {
3307 case R_TILEGX_IMM8_X0_TLS_ADD:
3308 mask = insn_mask_X0_no_dest_no_srca;
3309 break;
3310 case R_TILEGX_IMM8_X1_TLS_ADD:
3311 mask = insn_mask_X1_no_dest_no_srca;
3312 break;
3313 case R_TILEGX_IMM8_Y0_TLS_ADD:
3314 mask = insn_mask_Y0_no_dest_no_srca;
3315 break;
3316 case R_TILEGX_IMM8_Y1_TLS_ADD:
3317 mask = insn_mask_Y1_no_dest_no_srca;
3318 break;
3319 }
3320 }
3321 else
3322 {
3323 /* 1. copy dest operand into the second source operand.
3324 2. change the opcode to "add". */
3325 src_begin = is_pipe0 ? 12 : 43;
3326 if (ABI_64_P (output_bfd))
3327 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3328 else
3329 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3330
3331 switch (r_type)
3332 {
3333 case R_TILEGX_IMM8_X0_TLS_ADD:
3334 mask = insn_mask_X0_no_operand;
3335 break;
3336 case R_TILEGX_IMM8_X1_TLS_ADD:
3337 mask = insn_mask_X1_no_operand;
3338 break;
3339 case R_TILEGX_IMM8_Y0_TLS_ADD:
3340 mask = insn_mask_Y0_no_operand;
3341 break;
3342 case R_TILEGX_IMM8_Y1_TLS_ADD:
3343 mask = insn_mask_Y1_no_operand;
3344 break;
3345 }
3346 }
3347
3348 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3349 src_begin, 6);
3350 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3351
3352 continue;
3353 }
3354 else
3355 {
3356 const bfd_byte *mask = NULL;
3357 const bfd_byte *add_insn = NULL;
3358 bfd_boolean is_64bit = ABI_64_P (output_bfd);
3359
3360 switch (r_type)
3361 {
3362 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3363 add_insn = is_tls_iele
3364 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3365 : insn_tls_gd_add_X0X1;
3366 mask = insn_mask_X0_no_dest_no_srca;
3367 break;
3368 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3369 add_insn = is_tls_iele
3370 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3371 : insn_tls_gd_add_X0X1;
3372 mask = insn_mask_X1_no_dest_no_srca;
3373 break;
3374 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3375 add_insn = is_tls_iele
3376 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3377 : insn_tls_gd_add_Y0Y1;
3378 mask = insn_mask_Y0_no_dest_no_srca;
3379 break;
3380 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3381 add_insn = is_tls_iele
3382 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3383 : insn_tls_gd_add_Y0Y1;
3384 mask = insn_mask_Y1_no_dest_no_srca;
3385 break;
3386 }
3387
3388 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3389
3390 continue;
3391 }
3392 break;
3393 case R_TILEGX_TLS_IE_LOAD:
3394 if (!input_section->sec_flg0
3395 && !info->shared
3396 && (h == NULL || h->dynindx == -1))
3397 {
3398 /* IE -> LE */
3399 tilegx_replace_insn (contents + rel->r_offset,
3400 insn_mask_X1_no_dest_no_srca,
3401 insn_move_X0X1);
3402 }
3403 else
3404 {
3405 /* IE -> IE */
3406 if (ABI_64_P (output_bfd))
3407 tilegx_replace_insn (contents + rel->r_offset,
3408 insn_mask_X1_no_dest_no_srca,
3409 insn_tls_ie_ld_X1);
3410 else
3411 tilegx_replace_insn (contents + rel->r_offset,
3412 insn_mask_X1_no_dest_no_srca,
3413 insn_tls_ie_ld4s_X1);
3414 }
3415 continue;
3416 break;
3417 default:
3418 break;
3419 }
3420
3421 switch (r_type)
3422 {
3423 case R_TILEGX_IMM16_X0_HW0_GOT:
3424 case R_TILEGX_IMM16_X1_HW0_GOT:
3425 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3426 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3427 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3428 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3429 /* Relocation is to the entry for this symbol in the global
3430 offset table. */
3431 if (htab->elf.sgot == NULL)
3432 abort ();
3433
3434 if (h != NULL)
3435 {
3436 bfd_boolean dyn;
3437
3438 off = h->got.offset;
3439 BFD_ASSERT (off != (bfd_vma) -1);
3440 dyn = elf_hash_table (info)->dynamic_sections_created;
3441
3442 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3443 || (info->shared
3444 && SYMBOL_REFERENCES_LOCAL (info, h)))
3445 {
3446 /* This is actually a static link, or it is a
3447 -Bsymbolic link and the symbol is defined
3448 locally, or the symbol was forced to be local
3449 because of a version file. We must initialize
3450 this entry in the global offset table. Since the
3451 offset must always be a multiple
3452 of 8 for 64-bit, we use the least significant bit
3453 to record whether we have initialized it already.
3454
3455 When doing a dynamic link, we create a .rela.got
3456 relocation entry to initialize the value. This
3457 is done in the finish_dynamic_symbol routine. */
3458 if ((off & 1) != 0)
3459 off &= ~1;
3460 else
3461 {
3462 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3463 htab->elf.sgot->contents + off);
3464 h->got.offset |= 1;
3465 }
3466 }
3467 else
3468 unresolved_reloc = FALSE;
3469 }
3470 else
3471 {
3472 BFD_ASSERT (local_got_offsets != NULL
3473 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3474
3475 off = local_got_offsets[r_symndx];
3476
3477 /* The offset must always be a multiple of 8 on 64-bit.
3478 We use the least significant bit to record
3479 whether we have already processed this entry. */
3480 if ((off & 1) != 0)
3481 off &= ~1;
3482 else
3483 {
3484 if (info->shared)
3485 {
3486 asection *s;
3487 Elf_Internal_Rela outrel;
3488
3489 /* We need to generate a R_TILEGX_RELATIVE reloc
3490 for the dynamic linker. */
3491 s = htab->elf.srelgot;
3492 BFD_ASSERT (s != NULL);
3493
3494 outrel.r_offset = (htab->elf.sgot->output_section->vma
3495 + htab->elf.sgot->output_offset
3496 + off);
3497 outrel.r_info =
3498 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3499 outrel.r_addend = relocation;
3500 relocation = 0;
3501 tilegx_elf_append_rela (output_bfd, s, &outrel);
3502 }
3503
3504 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3505 htab->elf.sgot->contents + off);
3506 local_got_offsets[r_symndx] |= 1;
3507 }
3508 }
3509 relocation = off - got_base;
3510 break;
3511
3512 case R_TILEGX_JUMPOFF_X1_PLT:
3513 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
3514 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
3515 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
3516 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
3517 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
3518 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
3519 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
3520 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
3521 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
3522 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
3523 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
3524 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
3525 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
3526 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
3527 /* Relocation is to the entry for this symbol in the
3528 procedure linkage table. */
3529 BFD_ASSERT (h != NULL);
3530
3531 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3532 {
3533 /* We didn't make a PLT entry for this symbol. This
3534 happens when statically linking PIC code, or when
3535 using -Bsymbolic. */
3536 break;
3537 }
3538
3539 relocation = (htab->elf.splt->output_section->vma
3540 + htab->elf.splt->output_offset
3541 + h->plt.offset);
3542 unresolved_reloc = FALSE;
3543 break;
3544
3545 case R_TILEGX_64_PCREL:
3546 case R_TILEGX_32_PCREL:
3547 case R_TILEGX_16_PCREL:
3548 case R_TILEGX_8_PCREL:
3549 case R_TILEGX_IMM16_X0_HW0_PCREL:
3550 case R_TILEGX_IMM16_X1_HW0_PCREL:
3551 case R_TILEGX_IMM16_X0_HW1_PCREL:
3552 case R_TILEGX_IMM16_X1_HW1_PCREL:
3553 case R_TILEGX_IMM16_X0_HW2_PCREL:
3554 case R_TILEGX_IMM16_X1_HW2_PCREL:
3555 case R_TILEGX_IMM16_X0_HW3_PCREL:
3556 case R_TILEGX_IMM16_X1_HW3_PCREL:
3557 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3558 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3559 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3560 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3561 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3562 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3563 if (h != NULL
3564 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3565 break;
3566 /* Fall through. */
3567 case R_TILEGX_64:
3568 case R_TILEGX_32:
3569 case R_TILEGX_16:
3570 case R_TILEGX_8:
3571 case R_TILEGX_HW0:
3572 case R_TILEGX_HW1:
3573 case R_TILEGX_HW2:
3574 case R_TILEGX_HW3:
3575 case R_TILEGX_HW0_LAST:
3576 case R_TILEGX_HW1_LAST:
3577 case R_TILEGX_HW2_LAST:
3578 case R_TILEGX_COPY:
3579 case R_TILEGX_GLOB_DAT:
3580 case R_TILEGX_JMP_SLOT:
3581 case R_TILEGX_RELATIVE:
3582 case R_TILEGX_BROFF_X1:
3583 case R_TILEGX_JUMPOFF_X1:
3584 case R_TILEGX_IMM8_X0:
3585 case R_TILEGX_IMM8_Y0:
3586 case R_TILEGX_IMM8_X1:
3587 case R_TILEGX_IMM8_Y1:
3588 case R_TILEGX_DEST_IMM8_X1:
3589 case R_TILEGX_MT_IMM14_X1:
3590 case R_TILEGX_MF_IMM14_X1:
3591 case R_TILEGX_MMSTART_X0:
3592 case R_TILEGX_MMEND_X0:
3593 case R_TILEGX_SHAMT_X0:
3594 case R_TILEGX_SHAMT_X1:
3595 case R_TILEGX_SHAMT_Y0:
3596 case R_TILEGX_SHAMT_Y1:
3597 case R_TILEGX_IMM16_X0_HW0:
3598 case R_TILEGX_IMM16_X1_HW0:
3599 case R_TILEGX_IMM16_X0_HW1:
3600 case R_TILEGX_IMM16_X1_HW1:
3601 case R_TILEGX_IMM16_X0_HW2:
3602 case R_TILEGX_IMM16_X1_HW2:
3603 case R_TILEGX_IMM16_X0_HW3:
3604 case R_TILEGX_IMM16_X1_HW3:
3605 case R_TILEGX_IMM16_X0_HW0_LAST:
3606 case R_TILEGX_IMM16_X1_HW0_LAST:
3607 case R_TILEGX_IMM16_X0_HW1_LAST:
3608 case R_TILEGX_IMM16_X1_HW1_LAST:
3609 case R_TILEGX_IMM16_X0_HW2_LAST:
3610 case R_TILEGX_IMM16_X1_HW2_LAST:
3611 if ((input_section->flags & SEC_ALLOC) == 0)
3612 break;
3613
3614 if ((info->shared
3615 && (h == NULL
3616 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3617 || h->root.type != bfd_link_hash_undefweak)
3618 && (! howto->pc_relative
3619 || !SYMBOL_CALLS_LOCAL (info, h)))
3620 || (!info->shared
3621 && h != NULL
3622 && h->dynindx != -1
3623 && !h->non_got_ref
3624 && ((h->def_dynamic
3625 && !h->def_regular)
3626 || h->root.type == bfd_link_hash_undefweak
3627 || h->root.type == bfd_link_hash_undefined)))
3628 {
3629 Elf_Internal_Rela outrel;
3630 bfd_boolean skip, relocate = FALSE;
3631
3632 /* When generating a shared object, these relocations
3633 are copied into the output file to be resolved at run
3634 time. */
3635
3636 BFD_ASSERT (sreloc != NULL);
3637
3638 skip = FALSE;
3639
3640 outrel.r_offset =
3641 _bfd_elf_section_offset (output_bfd, info, input_section,
3642 rel->r_offset);
3643 if (outrel.r_offset == (bfd_vma) -1)
3644 skip = TRUE;
3645 else if (outrel.r_offset == (bfd_vma) -2)
3646 skip = TRUE, relocate = TRUE;
3647 outrel.r_offset += (input_section->output_section->vma
3648 + input_section->output_offset);
3649
3650 switch (r_type)
3651 {
3652 case R_TILEGX_64_PCREL:
3653 case R_TILEGX_32_PCREL:
3654 case R_TILEGX_16_PCREL:
3655 case R_TILEGX_8_PCREL:
3656 /* If the symbol is not dynamic, we should not keep
3657 a dynamic relocation. But an .rela.* slot has been
3658 allocated for it, output R_TILEGX_NONE.
3659 FIXME: Add code tracking needed dynamic relocs as
3660 e.g. i386 has. */
3661 if (h->dynindx == -1)
3662 skip = TRUE, relocate = TRUE;
3663 break;
3664 }
3665
3666 if (skip)
3667 memset (&outrel, 0, sizeof outrel);
3668 /* h->dynindx may be -1 if the symbol was marked to
3669 become local. */
3670 else if (h != NULL &&
3671 h->dynindx != -1
3672 && (! is_plt
3673 || !info->shared
3674 || !SYMBOLIC_BIND (info, h)
3675 || !h->def_regular))
3676 {
3677 BFD_ASSERT (h->dynindx != -1);
3678 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3679 outrel.r_addend = rel->r_addend;
3680 }
3681 else
3682 {
3683 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3684 {
3685 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3686 R_TILEGX_RELATIVE);
3687 outrel.r_addend = relocation + rel->r_addend;
3688 }
3689 else
3690 {
3691 long indx;
3692
3693 outrel.r_addend = relocation + rel->r_addend;
3694
3695 if (is_plt)
3696 sec = htab->elf.splt;
3697
3698 if (bfd_is_abs_section (sec))
3699 indx = 0;
3700 else if (sec == NULL || sec->owner == NULL)
3701 {
3702 bfd_set_error (bfd_error_bad_value);
3703 return FALSE;
3704 }
3705 else
3706 {
3707 asection *osec;
3708
3709 /* We are turning this relocation into one
3710 against a section symbol. It would be
3711 proper to subtract the symbol's value,
3712 osec->vma, from the emitted reloc addend,
3713 but ld.so expects buggy relocs. */
3714 osec = sec->output_section;
3715 indx = elf_section_data (osec)->dynindx;
3716
3717 if (indx == 0)
3718 {
3719 osec = htab->elf.text_index_section;
3720 indx = elf_section_data (osec)->dynindx;
3721 }
3722
3723 /* FIXME: we really should be able to link non-pic
3724 shared libraries. */
3725 if (indx == 0)
3726 {
3727 BFD_FAIL ();
3728 (*_bfd_error_handler)
3729 (_("%B: probably compiled without -fPIC?"),
3730 input_bfd);
3731 bfd_set_error (bfd_error_bad_value);
3732 return FALSE;
3733 }
3734 }
3735
3736 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3737 r_type);
3738 }
3739 }
3740
3741 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3742
3743 /* This reloc will be computed at runtime, so there's no
3744 need to do anything now. */
3745 if (! relocate)
3746 continue;
3747 }
3748 break;
3749
3750 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3751 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3752 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3753 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3754 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3755 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3756 if (info->shared)
3757 {
3758 Elf_Internal_Rela outrel;
3759 bfd_boolean skip;
3760
3761 BFD_ASSERT (sreloc != NULL);
3762 skip = FALSE;
3763 outrel.r_offset =
3764 _bfd_elf_section_offset (output_bfd, info, input_section,
3765 rel->r_offset);
3766 if (outrel.r_offset == (bfd_vma) -1)
3767 skip = TRUE;
3768 else if (outrel.r_offset == (bfd_vma) -2)
3769 skip = TRUE;
3770 outrel.r_offset += (input_section->output_section->vma
3771 + input_section->output_offset);
3772 if (skip)
3773 memset (&outrel, 0, sizeof outrel);
3774 else
3775 {
3776 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3777 outrel.r_addend = relocation - dtpoff_base (info)
3778 + rel->r_addend;
3779 }
3780
3781 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3782 continue;
3783 }
3784 relocation = tpoff (info, relocation);
3785 break;
3786
3787 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3788 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3789 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3790 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3791 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3792 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3793 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3794 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3795 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3796 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3797 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3798 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3799 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3800 input_section->sec_flg0);
3801 tls_type = GOT_UNKNOWN;
3802 if (h == NULL && local_got_offsets)
3803 tls_type =
3804 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3805 else if (h != NULL)
3806 {
3807 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3808 if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
3809 r_type = (!input_section->sec_flg0
3810 ? tilegx_tls_translate_to_le (r_type)
3811 : tilegx_tls_translate_to_ie (r_type));
3812 }
3813
3814 if (tls_type == GOT_TLS_IE)
3815 r_type = tilegx_tls_translate_to_ie (r_type);
3816
3817 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3818 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3819 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3820 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3821 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3822 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3823 {
3824 relocation = tpoff (info, relocation);
3825 break;
3826 }
3827
3828 if (h != NULL)
3829 {
3830 off = h->got.offset;
3831 h->got.offset |= 1;
3832 }
3833 else
3834 {
3835 BFD_ASSERT (local_got_offsets != NULL);
3836 off = local_got_offsets[r_symndx];
3837 local_got_offsets[r_symndx] |= 1;
3838 }
3839
3840 if (htab->elf.sgot == NULL)
3841 abort ();
3842
3843 if ((off & 1) != 0)
3844 off &= ~1;
3845 else
3846 {
3847 Elf_Internal_Rela outrel;
3848 int indx = 0;
3849 bfd_boolean need_relocs = FALSE;
3850
3851 if (htab->elf.srelgot == NULL)
3852 abort ();
3853
3854 if (h != NULL)
3855 {
3856 bfd_boolean dyn;
3857 dyn = htab->elf.dynamic_sections_created;
3858
3859 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3860 && (!info->shared
3861 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3862 {
3863 indx = h->dynindx;
3864 }
3865 }
3866
3867 /* The GOT entries have not been initialized yet. Do it
3868 now, and emit any relocations. */
3869 if ((info->shared || indx != 0)
3870 && (h == NULL
3871 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3872 || h->root.type != bfd_link_hash_undefweak))
3873 need_relocs = TRUE;
3874
3875 switch (r_type)
3876 {
3877 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3878 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3879 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3880 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3881 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3882 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3883 if (need_relocs) {
3884 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3885 htab->elf.sgot->contents + off);
3886 outrel.r_offset = (htab->elf.sgot->output_section->vma
3887 + htab->elf.sgot->output_offset + off);
3888 outrel.r_addend = 0;
3889 if (indx == 0)
3890 outrel.r_addend = relocation - dtpoff_base (info);
3891 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3892 TILEGX_ELF_TPOFF_RELOC (htab));
3893 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3894 } else {
3895 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3896 tpoff (info, relocation),
3897 htab->elf.sgot->contents + off);
3898 }
3899 break;
3900
3901 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3902 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3903 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3904 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3905 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3906 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3907 if (need_relocs) {
3908 outrel.r_offset = (htab->elf.sgot->output_section->vma
3909 + htab->elf.sgot->output_offset + off);
3910 outrel.r_addend = 0;
3911 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3912 TILEGX_ELF_DTPMOD_RELOC (htab));
3913 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3914 htab->elf.sgot->contents + off);
3915 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3916 if (indx == 0)
3917 {
3918 BFD_ASSERT (! unresolved_reloc);
3919 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3920 relocation - dtpoff_base (info),
3921 (htab->elf.sgot->contents + off +
3922 TILEGX_ELF_WORD_BYTES (htab)));
3923 }
3924 else
3925 {
3926 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3927 (htab->elf.sgot->contents + off +
3928 TILEGX_ELF_WORD_BYTES (htab)));
3929 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3930 TILEGX_ELF_DTPOFF_RELOC (htab));
3931 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3932 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3933 }
3934 }
3935
3936 else {
3937 /* If we are not emitting relocations for a
3938 general dynamic reference, then we must be in a
3939 static link or an executable link with the
3940 symbol binding locally. Mark it as belonging
3941 to module 1, the executable. */
3942 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3943 htab->elf.sgot->contents + off );
3944 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3945 relocation - dtpoff_base (info),
3946 htab->elf.sgot->contents + off +
3947 TILEGX_ELF_WORD_BYTES (htab));
3948 }
3949 break;
3950 }
3951 }
3952
3953 if (off >= (bfd_vma) -2)
3954 abort ();
3955
3956 relocation = off - got_base;
3957 unresolved_reloc = FALSE;
3958 howto = tilegx_elf_howto_table + r_type;
3959 break;
3960
3961 default:
3962 break;
3963 }
3964
3965 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3966 because such sections are not SEC_ALLOC and thus ld.so will
3967 not process them. */
3968 if (unresolved_reloc
3969 && !((input_section->flags & SEC_DEBUGGING) != 0
3970 && h->def_dynamic)
3971 && _bfd_elf_section_offset (output_bfd, info, input_section,
3972 rel->r_offset) != (bfd_vma) -1)
3973 (*_bfd_error_handler)
3974 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3975 input_bfd,
3976 input_section,
3977 (long) rel->r_offset,
3978 howto->name,
3979 h->root.root.string);
3980
3981 r = bfd_reloc_continue;
3982
3983 /* Get the operand creation function, if any. */
3984 create_func = reloc_to_create_func[r_type];
3985 if (create_func == NULL)
3986 {
3987 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3988 contents, rel->r_offset,
3989 relocation, rel->r_addend);
3990 }
3991 else
3992 {
3993 if (howto->pc_relative)
3994 {
3995 relocation -=
3996 input_section->output_section->vma + input_section->output_offset;
3997 if (howto->pcrel_offset)
3998 relocation -= rel->r_offset;
3999 }
4000
4001 bfd_byte *data;
4002
4003 /* Add the relocation addend if any to the final target value */
4004 relocation += rel->r_addend;
4005
4006 /* Do basic range checking */
4007 r = bfd_check_overflow (howto->complain_on_overflow,
4008 howto->bitsize,
4009 howto->rightshift,
4010 TILEGX_ELF_WORD_BYTES (htab) * 8,
4011 relocation);
4012
4013 /*
4014 * Write the relocated value out into the raw section data.
4015 * Don't put a relocation out in the .rela section.
4016 */
4017 tilegx_bundle_bits mask = create_func(-1);
4018 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
4019
4020 /* Only touch bytes while the mask is not 0, so we
4021 don't write to out of bounds memory if this is actually
4022 a 16-bit switch instruction. */
4023 for (data = contents + rel->r_offset; mask != 0; data++)
4024 {
4025 bfd_byte byte_mask = (bfd_byte)mask;
4026 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
4027 mask >>= 8;
4028 value >>= 8;
4029 }
4030 }
4031
4032 if (r != bfd_reloc_ok)
4033 {
4034 const char *msg = NULL;
4035
4036 switch (r)
4037 {
4038 case bfd_reloc_overflow:
4039 r = info->callbacks->reloc_overflow
4040 (info, (h ? &h->root : NULL), name, howto->name,
4041 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4042 break;
4043
4044 case bfd_reloc_undefined:
4045 r = info->callbacks->undefined_symbol
4046 (info, name, input_bfd, input_section, rel->r_offset,
4047 TRUE);
4048 break;
4049
4050 case bfd_reloc_outofrange:
4051 msg = _("internal error: out of range error");
4052 break;
4053
4054 case bfd_reloc_notsupported:
4055 msg = _("internal error: unsupported relocation error");
4056 break;
4057
4058 case bfd_reloc_dangerous:
4059 msg = _("internal error: dangerous relocation");
4060 break;
4061
4062 default:
4063 msg = _("internal error: unknown error");
4064 break;
4065 }
4066
4067 if (msg)
4068 r = info->callbacks->warning
4069 (info, msg, name, input_bfd, input_section, rel->r_offset);
4070
4071 if (! r)
4072 return FALSE;
4073 }
4074 }
4075
4076 return TRUE;
4077 }
4078
4079 /* Finish up dynamic symbol handling. We set the contents of various
4080 dynamic sections here. */
4081
4082 bfd_boolean
tilegx_elf_finish_dynamic_symbol(bfd * output_bfd,struct bfd_link_info * info,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)4083 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
4084 struct bfd_link_info *info,
4085 struct elf_link_hash_entry *h,
4086 Elf_Internal_Sym *sym)
4087 {
4088 struct tilegx_elf_link_hash_table *htab;
4089
4090 htab = tilegx_elf_hash_table (info);
4091 BFD_ASSERT (htab != NULL);
4092
4093 if (h->plt.offset != (bfd_vma) -1)
4094 {
4095 asection *splt;
4096 asection *srela;
4097 asection *sgotplt;
4098 Elf_Internal_Rela rela;
4099 bfd_byte *loc;
4100 bfd_vma r_offset;
4101 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
4102
4103
4104 int rela_index;
4105
4106 /* This symbol has an entry in the PLT. Set it up. */
4107
4108 BFD_ASSERT (h->dynindx != -1);
4109
4110 splt = htab->elf.splt;
4111 srela = htab->elf.srelplt;
4112 sgotplt = htab->elf.sgotplt;
4113
4114 if (splt == NULL || srela == NULL)
4115 abort ();
4116
4117 /* Fill in the entry in the procedure linkage table. */
4118 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
4119 h->plt.offset, &r_offset);
4120
4121 /* Fill in the entry in the global offset table, which initially points
4122 to the beginning of the plt. */
4123 TILEGX_ELF_PUT_WORD (htab, output_bfd,
4124 splt->output_section->vma + splt->output_offset,
4125 sgotplt->contents + r_offset);
4126
4127 /* Fill in the entry in the .rela.plt section. */
4128 rela.r_offset = (sgotplt->output_section->vma
4129 + sgotplt->output_offset
4130 + r_offset);
4131 rela.r_addend = 0;
4132 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
4133
4134 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
4135 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4136
4137 if (!h->def_regular)
4138 {
4139 /* Mark the symbol as undefined, rather than as defined in
4140 the .plt section. Leave the value alone. */
4141 sym->st_shndx = SHN_UNDEF;
4142 /* If the symbol is weak, we do need to clear the value.
4143 Otherwise, the PLT entry would provide a definition for
4144 the symbol even if the symbol wasn't defined anywhere,
4145 and so the symbol would never be NULL. */
4146 if (!h->ref_regular_nonweak)
4147 sym->st_value = 0;
4148 }
4149 }
4150
4151 if (h->got.offset != (bfd_vma) -1
4152 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4153 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4154 {
4155 asection *sgot;
4156 asection *srela;
4157 Elf_Internal_Rela rela;
4158
4159 /* This symbol has an entry in the GOT. Set it up. */
4160
4161 sgot = htab->elf.sgot;
4162 srela = htab->elf.srelgot;
4163 BFD_ASSERT (sgot != NULL && srela != NULL);
4164
4165 rela.r_offset = (sgot->output_section->vma
4166 + sgot->output_offset
4167 + (h->got.offset &~ (bfd_vma) 1));
4168
4169 /* If this is a -Bsymbolic link, and the symbol is defined
4170 locally, we just want to emit a RELATIVE reloc. Likewise if
4171 the symbol was forced to be local because of a version file.
4172 The entry in the global offset table will already have been
4173 initialized in the relocate_section function. */
4174 if (info->shared
4175 && (info->symbolic || h->dynindx == -1)
4176 && h->def_regular)
4177 {
4178 asection *sec = h->root.u.def.section;
4179 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
4180 rela.r_addend = (h->root.u.def.value
4181 + sec->output_section->vma
4182 + sec->output_offset);
4183 }
4184 else
4185 {
4186 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
4187 rela.r_addend = 0;
4188 }
4189
4190 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
4191 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4192 tilegx_elf_append_rela (output_bfd, srela, &rela);
4193 }
4194
4195 if (h->needs_copy)
4196 {
4197 asection *s;
4198 Elf_Internal_Rela rela;
4199
4200 /* This symbols needs a copy reloc. Set it up. */
4201 BFD_ASSERT (h->dynindx != -1);
4202
4203 s = htab->srelbss;
4204 BFD_ASSERT (s != NULL);
4205
4206 rela.r_offset = (h->root.u.def.value
4207 + h->root.u.def.section->output_section->vma
4208 + h->root.u.def.section->output_offset);
4209 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
4210 rela.r_addend = 0;
4211 tilegx_elf_append_rela (output_bfd, s, &rela);
4212 }
4213
4214 /* Mark some specially defined symbols as absolute. */
4215 if (h == htab->elf.hdynamic
4216 || (h == htab->elf.hgot || h == htab->elf.hplt))
4217 sym->st_shndx = SHN_ABS;
4218
4219 return TRUE;
4220 }
4221
4222 /* Finish up the dynamic sections. */
4223
4224 static bfd_boolean
tilegx_finish_dyn(bfd * output_bfd,struct bfd_link_info * info,bfd * dynobj,asection * sdyn,asection * splt ATTRIBUTE_UNUSED)4225 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4226 bfd *dynobj, asection *sdyn,
4227 asection *splt ATTRIBUTE_UNUSED)
4228 {
4229 struct tilegx_elf_link_hash_table *htab;
4230 const struct elf_backend_data *bed;
4231 bfd_byte *dyncon, *dynconend;
4232 size_t dynsize;
4233
4234 htab = tilegx_elf_hash_table (info);
4235 BFD_ASSERT (htab != NULL);
4236 bed = get_elf_backend_data (output_bfd);
4237 dynsize = bed->s->sizeof_dyn;
4238 dynconend = sdyn->contents + sdyn->size;
4239
4240 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4241 {
4242 Elf_Internal_Dyn dyn;
4243 asection *s;
4244
4245 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4246
4247 switch (dyn.d_tag)
4248 {
4249 case DT_PLTGOT:
4250 s = htab->elf.sgotplt;
4251 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4252 break;
4253 case DT_JMPREL:
4254 s = htab->elf.srelplt;
4255 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4256 break;
4257 case DT_PLTRELSZ:
4258 s = htab->elf.srelplt;
4259 dyn.d_un.d_val = s->size;
4260 break;
4261 default:
4262 continue;
4263 }
4264
4265 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4266 }
4267 return TRUE;
4268 }
4269
4270 bfd_boolean
tilegx_elf_finish_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)4271 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
4272 struct bfd_link_info *info)
4273 {
4274 bfd *dynobj;
4275 asection *sdyn;
4276 struct tilegx_elf_link_hash_table *htab;
4277 size_t pad_size;
4278
4279 htab = tilegx_elf_hash_table (info);
4280 BFD_ASSERT (htab != NULL);
4281 dynobj = htab->elf.dynobj;
4282
4283 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4284
4285 if (elf_hash_table (info)->dynamic_sections_created)
4286 {
4287 asection *splt;
4288 bfd_boolean ret;
4289
4290 splt = htab->elf.splt;
4291 BFD_ASSERT (splt != NULL && sdyn != NULL);
4292
4293 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
4294
4295 if (ret != TRUE)
4296 return ret;
4297
4298 /* Fill in the head and tail entries in the procedure linkage table. */
4299 if (splt->size > 0)
4300 {
4301 memcpy (splt->contents,
4302 ABI_64_P (output_bfd) ?
4303 tilegx64_plt0_entry : tilegx32_plt0_entry,
4304 PLT_HEADER_SIZE);
4305
4306 memcpy (splt->contents + splt->size
4307 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE,
4308 ABI_64_P (output_bfd) ?
4309 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4310 PLT_TAIL_SIZE);
4311 /* Add padding so that the plt section is a multiple of its
4312 entry size. */
4313 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE;
4314 memset (splt->contents + splt->size - pad_size, 0, pad_size);
4315 }
4316
4317 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4318 = PLT_ENTRY_SIZE;
4319 }
4320
4321 if (htab->elf.sgotplt)
4322 {
4323 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4324 {
4325 (*_bfd_error_handler)
4326 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4327 return FALSE;
4328 }
4329
4330 if (htab->elf.sgotplt->size > 0)
4331 {
4332 /* Write the first two entries in .got.plt, needed for the dynamic
4333 linker. */
4334 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4335 htab->elf.sgotplt->contents);
4336 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4337 htab->elf.sgotplt->contents
4338 + GOT_ENTRY_SIZE (htab));
4339 }
4340
4341 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4342 GOT_ENTRY_SIZE (htab);
4343 }
4344
4345 if (htab->elf.sgot)
4346 {
4347 if (htab->elf.sgot->size > 0)
4348 {
4349 /* Set the first entry in the global offset table to the address of
4350 the dynamic section. */
4351 bfd_vma val = (sdyn ?
4352 sdyn->output_section->vma + sdyn->output_offset :
4353 0);
4354 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4355 htab->elf.sgot->contents);
4356 }
4357
4358 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4359 GOT_ENTRY_SIZE (htab);
4360 }
4361
4362 return TRUE;
4363 }
4364
4365
4366
4367 /* Return address for Ith PLT stub in section PLT, for relocation REL
4368 or (bfd_vma) -1 if it should not be included. */
4369
4370 bfd_vma
tilegx_elf_plt_sym_val(bfd_vma i,const asection * plt,const arelent * rel ATTRIBUTE_UNUSED)4371 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4372 const arelent *rel ATTRIBUTE_UNUSED)
4373 {
4374 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4375 }
4376
4377 enum elf_reloc_type_class
tilegx_reloc_type_class(const struct bfd_link_info * info ATTRIBUTE_UNUSED,const asection * rel_sec ATTRIBUTE_UNUSED,const Elf_Internal_Rela * rela)4378 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4379 const asection *rel_sec ATTRIBUTE_UNUSED,
4380 const Elf_Internal_Rela *rela)
4381 {
4382 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4383 {
4384 case R_TILEGX_RELATIVE:
4385 return reloc_class_relative;
4386 case R_TILEGX_JMP_SLOT:
4387 return reloc_class_plt;
4388 case R_TILEGX_COPY:
4389 return reloc_class_copy;
4390 default:
4391 return reloc_class_normal;
4392 }
4393 }
4394
4395 int
tilegx_additional_program_headers(bfd * abfd,struct bfd_link_info * info ATTRIBUTE_UNUSED)4396 tilegx_additional_program_headers (bfd *abfd,
4397 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4398 {
4399 /* Each .intrpt section specified by the user adds another PT_LOAD
4400 header since the sections are discontiguous. */
4401 static const char intrpt_sections[4][9] =
4402 {
4403 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4404 };
4405 int count = 0;
4406 int i;
4407
4408 for (i = 0; i < 4; i++)
4409 {
4410 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4411 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4412 ++count;
4413 }
4414
4415 /* Add four "padding" headers in to leave room in case a custom linker
4416 script does something fancy. Otherwise ld complains that it ran
4417 out of program headers and refuses to link. */
4418 count += 4;
4419
4420 return count;
4421 }
4422
4423
4424 bfd_boolean
_bfd_tilegx_elf_merge_private_bfd_data(bfd * ibfd,bfd * obfd)4425 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4426 {
4427 const char *targ1 = bfd_get_target (ibfd);
4428 const char *targ2 = bfd_get_target (obfd);
4429
4430 if (strcmp (targ1, targ2) != 0)
4431 {
4432 (*_bfd_error_handler)
4433 (_("%B: Cannot link together %s and %s objects."),
4434 ibfd, targ1, targ2);
4435 bfd_set_error (bfd_error_bad_value);
4436 return FALSE;
4437 }
4438
4439 return TRUE;
4440 }
4441