1 /* TILEPro-specific support for 32-bit ELF.
2 Copyright (C) 2011-2016 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/tilepro.h"
26 #include "opcode/tilepro.h"
27 #include "libiberty.h"
28 #include "elf32-tilepro.h"
29
30 #define TILEPRO_BYTES_PER_WORD 4
31
32 static reloc_howto_type tilepro_elf_howto_table [] =
33 {
34 /* This reloc does nothing. */
35 HOWTO (R_TILEPRO_NONE, /* type */
36 0, /* rightshift */
37 3, /* size (0 = byte, 1 = short, 2 = long) */
38 0, /* bitsize */
39 FALSE, /* pc_relative */
40 0, /* bitpos */
41 complain_overflow_dont, /* complain_on_overflow */
42 bfd_elf_generic_reloc, /* special_function */
43 "R_TILEPRO_NONE", /* name */
44 FALSE, /* partial_inplace */
45 0, /* src_mask */
46 0, /* dst_mask */
47 FALSE), /* pcrel_offset */
48
49 /* A 32 bit absolute relocation. */
50 HOWTO (R_TILEPRO_32, /* type */
51 0, /* rightshift */
52 2, /* size (0 = byte, 1 = short, 2 = long) */
53 32, /* bitsize */
54 FALSE, /* pc_relative */
55 0, /* bitpos */
56 complain_overflow_dont, /* complain_on_overflow */
57 bfd_elf_generic_reloc, /* special_function */
58 "R_TILEPRO_32", /* name */
59 FALSE, /* partial_inplace */
60 0, /* src_mask */
61 0xffffffff, /* dst_mask */
62 FALSE), /* pcrel_offset */
63
64 /* A 16 bit absolute relocation. */
65 HOWTO (R_TILEPRO_16, /* type */
66 0, /* rightshift */
67 1, /* size (0 = byte, 1 = short, 2 = long) */
68 16, /* bitsize */
69 FALSE, /* pc_relative */
70 0, /* bitpos */
71 complain_overflow_bitfield, /* complain_on_overflow */
72 bfd_elf_generic_reloc, /* special_function */
73 "R_TILEPRO_16", /* name */
74 FALSE, /* partial_inplace */
75 0, /* src_mask */
76 0xffff, /* dst_mask */
77 FALSE), /* pcrel_offset */
78
79 /* An 8 bit absolute relocation. */
80 HOWTO (R_TILEPRO_8, /* type */
81 0, /* rightshift */
82 0, /* size (0 = byte, 1 = short, 2 = long) */
83 8, /* bitsize */
84 FALSE, /* pc_relative */
85 0, /* bitpos */
86 complain_overflow_unsigned, /* complain_on_overflow */
87 bfd_elf_generic_reloc, /* special_function */
88 "R_TILEPRO_8", /* name */
89 FALSE, /* partial_inplace */
90 0, /* src_mask */
91 0xff, /* dst_mask */
92 FALSE), /* pcrel_offset */
93
94 /* A 32 bit pc-relative relocation. */
95 HOWTO (R_TILEPRO_32_PCREL,/* type */
96 0, /* rightshift */
97 2, /* size (0 = byte, 1 = short, 2 = long) */
98 32, /* bitsize */
99 TRUE, /* pc_relative */
100 0, /* bitpos */
101 complain_overflow_dont, /* complain_on_overflow */
102 bfd_elf_generic_reloc, /* special_function */
103 "R_TILEPRO_32_PCREL", /* name */
104 FALSE, /* partial_inplace */
105 0, /* src_mask */
106 0xffffffff, /* dst_mask */
107 TRUE), /* pcrel_offset */
108
109 /* A 16 bit pc-relative relocation. */
110 HOWTO (R_TILEPRO_16_PCREL,/* type */
111 0, /* rightshift */
112 1, /* size (0 = byte, 1 = short, 2 = long) */
113 16, /* bitsize */
114 TRUE, /* pc_relative */
115 0, /* bitpos */
116 complain_overflow_signed, /* complain_on_overflow */
117 bfd_elf_generic_reloc, /* special_function */
118 "R_TILEPRO_16_PCREL", /* name */
119 FALSE, /* partial_inplace */
120 0, /* src_mask */
121 0xffff, /* dst_mask */
122 TRUE), /* pcrel_offset */
123
124 /* An 8 bit pc-relative relocation. */
125 HOWTO (R_TILEPRO_8_PCREL, /* type */
126 0, /* rightshift */
127 0, /* size (0 = byte, 1 = short, 2 = long) */
128 8, /* bitsize */
129 TRUE, /* pc_relative */
130 0, /* bitpos */
131 complain_overflow_signed, /* complain_on_overflow */
132 bfd_elf_generic_reloc, /* special_function */
133 "R_TILEPRO_8_PCREL",/* name */
134 FALSE, /* partial_inplace */
135 0, /* src_mask */
136 0xff, /* dst_mask */
137 TRUE), /* pcrel_offset */
138
139 /* A 16 bit relocation without overflow. */
140 HOWTO (R_TILEPRO_LO16, /* type */
141 0, /* rightshift */
142 1, /* size (0 = byte, 1 = short, 2 = long) */
143 16, /* bitsize */
144 FALSE, /* pc_relative */
145 0, /* bitpos */
146 complain_overflow_dont,/* complain_on_overflow */
147 bfd_elf_generic_reloc, /* special_function */
148 "R_TILEPRO_LO16", /* name */
149 FALSE, /* partial_inplace */
150 0, /* src_mask */
151 0xffff, /* dst_mask */
152 FALSE), /* pcrel_offset */
153
154 /* The high order 16 bits of an address. */
155 HOWTO (R_TILEPRO_HI16, /* type */
156 16, /* rightshift */
157 1, /* size (0 = byte, 1 = short, 2 = long) */
158 16, /* bitsize */
159 FALSE, /* pc_relative */
160 0, /* bitpos */
161 complain_overflow_dont, /* complain_on_overflow */
162 bfd_elf_generic_reloc, /* special_function */
163 "R_TILEPRO_HI16", /* name */
164 FALSE, /* partial_inplace */
165 0, /* src_mask */
166 0xffff, /* dst_mask */
167 FALSE), /* pcrel_offset */
168
169 /* The high order 16 bits of an address, plus 1 if the contents of
170 the low 16 bits, treated as a signed number, is negative. */
171 HOWTO (R_TILEPRO_HA16, /* type */
172 16, /* rightshift */
173 1, /* size (0 = byte, 1 = short, 2 = long) */
174 16, /* bitsize */
175 FALSE, /* pc_relative */
176 0, /* bitpos */
177 complain_overflow_dont, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_TILEPRO_HA16", /* name */
180 FALSE, /* partial_inplace */
181 0, /* src_mask */
182 0xffff, /* dst_mask */
183 FALSE), /* pcrel_offset */
184
185 HOWTO (R_TILEPRO_COPY, /* type */
186 0, /* rightshift */
187 0, /* size (0 = byte, 1 = short, 2 = long) */
188 0, /* bitsize */
189 FALSE, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_dont, /* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_TILEPRO_COPY", /* name */
194 FALSE, /* partial_inplace */
195 0, /* src_mask */
196 0, /* dst_mask */
197 TRUE), /* pcrel_offset */
198
199 HOWTO (R_TILEPRO_GLOB_DAT, /* type */
200 0, /* rightshift */
201 0, /* size (0 = byte, 1 = short, 2 = long) */
202 0, /* bitsize */
203 FALSE, /* pc_relative */
204 0, /* bitpos */
205 complain_overflow_dont, /* complain_on_overflow */
206 bfd_elf_generic_reloc, /* special_function */
207 "R_TILEPRO_GLOB_DAT", /* name */
208 FALSE, /* partial_inplace */
209 0, /* src_mask */
210 0, /* dst_mask */
211 TRUE), /* pcrel_offset */
212
213 HOWTO (R_TILEPRO_JMP_SLOT, /* type */
214 0, /* rightshift */
215 0, /* size (0 = byte, 1 = short, 2 = long) */
216 0, /* bitsize */
217 FALSE, /* pc_relative */
218 0, /* bitpos */
219 complain_overflow_dont, /* complain_on_overflow */
220 bfd_elf_generic_reloc, /* special_function */
221 "R_TILEPRO_JMP_SLOT", /* name */
222 FALSE, /* partial_inplace */
223 0, /* src_mask */
224 0, /* dst_mask */
225 TRUE), /* pcrel_offset */
226
227 HOWTO (R_TILEPRO_RELATIVE, /* type */
228 0, /* rightshift */
229 0, /* size (0 = byte, 1 = short, 2 = long) */
230 0, /* bitsize */
231 FALSE, /* pc_relative */
232 0, /* bitpos */
233 complain_overflow_dont, /* complain_on_overflow */
234 bfd_elf_generic_reloc, /* special_function */
235 "R_TILEPRO_RELATIVE", /* name */
236 FALSE, /* partial_inplace */
237 0, /* src_mask */
238 0, /* dst_mask */
239 TRUE), /* pcrel_offset */
240
241 HOWTO (R_TILEPRO_BROFF_X1, /* type */
242 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
244 17, /* bitsize */
245 TRUE, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_signed, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_TILEPRO_BROFF_X1", /* name */
250 FALSE, /* partial_inplace */
251 0, /* src_mask */
252 -1, /* dst_mask */
253 TRUE), /* pcrel_offset */
254
255 HOWTO (R_TILEPRO_JOFFLONG_X1, /* type */
256 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
257 2, /* size (0 = byte, 1 = short, 2 = long) */
258 29, /* bitsize */
259 TRUE, /* pc_relative */
260 0, /* bitpos */
261 complain_overflow_signed,/* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_TILEPRO_JOFFLONG_X1", /* name */
264 FALSE, /* partial_inplace */
265 0, /* src_mask */
266 -1, /* dst_mask */
267 TRUE), /* pcrel_offset */
268
269 HOWTO (R_TILEPRO_JOFFLONG_X1_PLT, /* type */
270 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
271 2, /* size (0 = byte, 1 = short, 2 = long) */
272 29, /* bitsize */
273 TRUE, /* pc_relative */
274 0, /* bitpos */
275 complain_overflow_signed,/* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_TILEPRO_JOFFLONG_X1_PLT", /* name */
278 FALSE, /* partial_inplace */
279 0, /* src_mask */
280 -1, /* dst_mask */
281 TRUE), /* pcrel_offset */
282
283 #define TILEPRO_IMM_HOWTO(name, size, bitsize) \
284 HOWTO (name, 0, size, bitsize, FALSE, 0, \
285 complain_overflow_signed, bfd_elf_generic_reloc, \
286 #name, FALSE, 0, -1, FALSE)
287
288 #define TILEPRO_UIMM_HOWTO(name, size, bitsize) \
289 HOWTO (name, 0, size, bitsize, FALSE, 0, \
290 complain_overflow_unsigned, bfd_elf_generic_reloc, \
291 #name, FALSE, 0, -1, FALSE)
292
293 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0, 0, 8),
294 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0, 0, 8),
295 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1, 0, 8),
296 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1, 0, 8),
297 TILEPRO_UIMM_HOWTO(R_TILEPRO_MT_IMM15_X1, 1, 15),
298 TILEPRO_UIMM_HOWTO(R_TILEPRO_MF_IMM15_X1, 1, 15),
299 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0, 1, 16),
300 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1, 1, 16),
301
302 #define TILEPRO_IMM16_HOWTO(name, rshift) \
303 HOWTO (name, rshift, 1, 16, FALSE, 0, \
304 complain_overflow_dont, bfd_elf_generic_reloc, \
305 #name, FALSE, 0, 0xffff, FALSE)
306
307 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_LO, 0),
308 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_LO, 0),
309 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HI, 16),
310 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HI, 16),
311 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HA, 16),
312 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HA, 16),
313
314 /* PC-relative offsets. */
315
316 HOWTO (R_TILEPRO_IMM16_X0_PCREL, /* type */
317 0, /* rightshift */
318 1, /* size (0 = byte, 1 = short, 2 = long) */
319 16, /* bitsize */
320 TRUE, /* pc_relative */
321 0, /* bitpos */
322 complain_overflow_signed, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_TILEPRO_IMM16_X0_PCREL",/* name */
325 FALSE, /* partial_inplace */
326 0, /* src_mask */
327 -1, /* dst_mask */
328 TRUE), /* pcrel_offset */
329
330 HOWTO (R_TILEPRO_IMM16_X1_PCREL, /* type */
331 0, /* rightshift */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
334 TRUE, /* pc_relative */
335 0, /* bitpos */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_TILEPRO_IMM16_X1_PCREL",/* name */
339 FALSE, /* partial_inplace */
340 0, /* src_mask */
341 -1, /* dst_mask */
342 TRUE), /* pcrel_offset */
343
344 #define TILEPRO_IMM16_HOWTO_PCREL(name, rshift) \
345 HOWTO (name, rshift, 1, 16, TRUE, 0, \
346 complain_overflow_dont, bfd_elf_generic_reloc, \
347 #name, FALSE, 0, 0xffff, TRUE)
348
349 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_LO_PCREL, 0),
350 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_LO_PCREL, 0),
351 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HI_PCREL, 16),
352 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HI_PCREL, 16),
353 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HA_PCREL, 16),
354 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HA_PCREL, 16),
355
356 /* Byte offset into GOT for a particular symbol. */
357 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0_GOT, 1, 16),
358 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1_GOT, 1, 16),
359 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_LO, 0),
360 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_LO, 0),
361 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HI, 16),
362 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HI, 16),
363 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HA, 16),
364 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HA, 16),
365
366 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X0, 0, 5),
367 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X0, 0, 5),
368 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X1, 0, 5),
369 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X1, 0, 5),
370
371 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X0, 0, 5),
372 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X1, 0, 5),
373 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y0, 0, 5),
374 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y1, 0, 5),
375
376 TILEPRO_IMM_HOWTO(R_TILEPRO_DEST_IMM8_X1, 0, 8),
377
378 /* These relocs are currently not defined. */
379 EMPTY_HOWTO (56),
380 EMPTY_HOWTO (57),
381 EMPTY_HOWTO (58),
382 EMPTY_HOWTO (59),
383
384 HOWTO (R_TILEPRO_TLS_GD_CALL, /* type */
385 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 29, /* bitsize */
388 TRUE, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_signed,/* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_TILEPRO_TLS_GD_CALL", /* name */
393 FALSE, /* partial_inplace */
394 0, /* src_mask */
395 -1, /* dst_mask */
396 TRUE), /* pcrel_offset */
397
398 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0_TLS_GD_ADD, 0, 8),
399 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1_TLS_GD_ADD, 0, 8),
400 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0_TLS_GD_ADD, 0, 8),
401 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1_TLS_GD_ADD, 0, 8),
402 TILEPRO_IMM_HOWTO(R_TILEPRO_TLS_IE_LOAD, 0, 8),
403
404 /* Offsets into the GOT of TLS Descriptors. */
405
406 HOWTO (R_TILEPRO_IMM16_X0_TLS_GD,/* type */
407 0, /* rightshift */
408 1, /* size (0 = byte, 1 = short, 2 = long) */
409 16, /* bitsize */
410 FALSE, /* pc_relative */
411 0, /* bitpos */
412 complain_overflow_signed, /* complain_on_overflow */
413 bfd_elf_generic_reloc, /* special_function */
414 "R_TILEPRO_IMM16_X0_TLS_GD",/* name */
415 FALSE, /* partial_inplace */
416 0, /* src_mask */
417 0xffff, /* dst_mask */
418 FALSE), /* pcrel_offset */
419
420 HOWTO (R_TILEPRO_IMM16_X1_TLS_GD,/* type */
421 0, /* rightshift */
422 1, /* size (0 = byte, 1 = short, 2 = long) */
423 16, /* bitsize */
424 FALSE, /* pc_relative */
425 0, /* bitpos */
426 complain_overflow_signed, /* complain_on_overflow */
427 bfd_elf_generic_reloc, /* special_function */
428 "R_TILEPRO_IMM16_X1_TLS_GD",/* name */
429 FALSE, /* partial_inplace */
430 0, /* src_mask */
431 0xffff, /* dst_mask */
432 FALSE), /* pcrel_offset */
433
434 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_LO, 0),
435 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_LO, 0),
436 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HI, 16),
437 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HI, 16),
438 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HA, 16),
439 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HA, 16),
440
441 /* Offsets into the GOT of TLS Descriptors. */
442
443 HOWTO (R_TILEPRO_IMM16_X0_TLS_IE,/* type */
444 0, /* rightshift */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
446 16, /* bitsize */
447 FALSE, /* pc_relative */
448 0, /* bitpos */
449 complain_overflow_signed, /* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
451 "R_TILEPRO_IMM16_X0_TLS_IE",/* name */
452 FALSE, /* partial_inplace */
453 0, /* src_mask */
454 -1, /* dst_mask */
455 TRUE), /* pcrel_offset */
456
457 HOWTO (R_TILEPRO_IMM16_X1_TLS_IE,/* type */
458 0, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_TILEPRO_IMM16_X1_TLS_IE",/* name */
466 FALSE, /* partial_inplace */
467 0, /* src_mask */
468 -1, /* dst_mask */
469 TRUE), /* pcrel_offset */
470
471 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_LO, 0),
472 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_LO, 0),
473 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HI, 16),
474 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HI, 16),
475 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HA, 16),
476 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HA, 16),
477
478 /* These are common with the Solaris TLS implementation. */
479 HOWTO(R_TILEPRO_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
480 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPMOD32",
481 FALSE, 0, 0, TRUE),
482 HOWTO(R_TILEPRO_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
483 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPOFF32",
484 FALSE, 0, 0xFFFFFFFF, TRUE),
485 HOWTO(R_TILEPRO_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
486 bfd_elf_generic_reloc, "R_TILEPRO_TLS_TPOFF32",
487 FALSE, 0, 0, TRUE),
488
489 HOWTO (R_TILEPRO_IMM16_X0_TLS_LE,/* type */
490 0, /* rightshift */
491 1, /* size (0 = byte, 1 = short, 2 = long) */
492 16, /* bitsize */
493 FALSE, /* pc_relative */
494 0, /* bitpos */
495 complain_overflow_signed, /* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_TILEPRO_IMM16_X0_TLS_LE",/* name */
498 FALSE, /* partial_inplace */
499 0, /* src_mask */
500 -1, /* dst_mask */
501 TRUE), /* pcrel_offset */
502
503 HOWTO (R_TILEPRO_IMM16_X1_TLS_LE,/* type */
504 0, /* rightshift */
505 1, /* size (0 = byte, 1 = short, 2 = long) */
506 16, /* bitsize */
507 FALSE, /* pc_relative */
508 0, /* bitpos */
509 complain_overflow_signed, /* complain_on_overflow */
510 bfd_elf_generic_reloc, /* special_function */
511 "R_TILEPRO_IMM16_X1_TLS_LE",/* name */
512 FALSE, /* partial_inplace */
513 0, /* src_mask */
514 -1, /* dst_mask */
515 TRUE), /* pcrel_offset */
516
517 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_LO, 0),
518 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_LO, 0),
519 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HI, 16),
520 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HI, 16),
521 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HA, 16),
522 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HA, 16),
523 };
524
525 static reloc_howto_type tilepro_elf_howto_table2 [] =
526 {
527 /* GNU extension to record C++ vtable hierarchy */
528 HOWTO (R_TILEPRO_GNU_VTINHERIT, /* type */
529 0, /* rightshift */
530 2, /* size (0 = byte, 1 = short, 2 = long) */
531 0, /* bitsize */
532 FALSE, /* pc_relative */
533 0, /* bitpos */
534 complain_overflow_dont, /* complain_on_overflow */
535 NULL, /* special_function */
536 "R_TILEPRO_GNU_VTINHERIT", /* name */
537 FALSE, /* partial_inplace */
538 0, /* src_mask */
539 0, /* dst_mask */
540 FALSE), /* pcrel_offset */
541
542 /* GNU extension to record C++ vtable member usage */
543 HOWTO (R_TILEPRO_GNU_VTENTRY, /* type */
544 0, /* rightshift */
545 2, /* size (0 = byte, 1 = short, 2 = long) */
546 0, /* bitsize */
547 FALSE, /* pc_relative */
548 0, /* bitpos */
549 complain_overflow_dont, /* complain_on_overflow */
550 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
551 "R_TILEPRO_GNU_VTENTRY", /* name */
552 FALSE, /* partial_inplace */
553 0, /* src_mask */
554 0, /* dst_mask */
555 FALSE), /* pcrel_offset */
556
557 };
558
559 /* Map BFD reloc types to TILEPRO ELF reloc types. */
560
561 typedef struct tilepro_reloc_map
562 {
563 bfd_reloc_code_real_type bfd_reloc_val;
564 unsigned int tilepro_reloc_val;
565 reloc_howto_type * table;
566 } reloc_map;
567
568 static const reloc_map tilepro_reloc_map [] =
569 {
570 #define TH_REMAP(bfd, tilepro) \
571 { bfd, tilepro, tilepro_elf_howto_table },
572
573 /* Standard relocations. */
574 TH_REMAP (BFD_RELOC_NONE, R_TILEPRO_NONE)
575 TH_REMAP (BFD_RELOC_32, R_TILEPRO_32)
576 TH_REMAP (BFD_RELOC_16, R_TILEPRO_16)
577 TH_REMAP (BFD_RELOC_8, R_TILEPRO_8)
578 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEPRO_32_PCREL)
579 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEPRO_16_PCREL)
580 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEPRO_8_PCREL)
581 TH_REMAP (BFD_RELOC_LO16, R_TILEPRO_LO16)
582 TH_REMAP (BFD_RELOC_HI16, R_TILEPRO_HI16)
583 TH_REMAP (BFD_RELOC_HI16_S, R_TILEPRO_HA16)
584
585 /* Custom relocations. */
586 TH_REMAP (BFD_RELOC_TILEPRO_COPY, R_TILEPRO_COPY)
587 TH_REMAP (BFD_RELOC_TILEPRO_GLOB_DAT, R_TILEPRO_GLOB_DAT)
588 TH_REMAP (BFD_RELOC_TILEPRO_JMP_SLOT, R_TILEPRO_JMP_SLOT)
589 TH_REMAP (BFD_RELOC_TILEPRO_RELATIVE, R_TILEPRO_RELATIVE)
590 TH_REMAP (BFD_RELOC_TILEPRO_BROFF_X1, R_TILEPRO_BROFF_X1)
591 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1, R_TILEPRO_JOFFLONG_X1)
592 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT, R_TILEPRO_JOFFLONG_X1_PLT)
593 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0, R_TILEPRO_IMM8_X0)
594 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0, R_TILEPRO_IMM8_Y0)
595 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1, R_TILEPRO_IMM8_X1)
596 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1, R_TILEPRO_IMM8_Y1)
597 TH_REMAP (BFD_RELOC_TILEPRO_DEST_IMM8_X1, R_TILEPRO_DEST_IMM8_X1)
598 TH_REMAP (BFD_RELOC_TILEPRO_MT_IMM15_X1, R_TILEPRO_MT_IMM15_X1)
599 TH_REMAP (BFD_RELOC_TILEPRO_MF_IMM15_X1, R_TILEPRO_MF_IMM15_X1)
600 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0, R_TILEPRO_IMM16_X0)
601 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1, R_TILEPRO_IMM16_X1)
602 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO, R_TILEPRO_IMM16_X0_LO)
603 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO, R_TILEPRO_IMM16_X1_LO)
604 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI, R_TILEPRO_IMM16_X0_HI)
605 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI, R_TILEPRO_IMM16_X1_HI)
606 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA, R_TILEPRO_IMM16_X0_HA)
607 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA, R_TILEPRO_IMM16_X1_HA)
608
609 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_PCREL, R_TILEPRO_IMM16_X0_PCREL)
610 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_PCREL, R_TILEPRO_IMM16_X1_PCREL)
611 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL, R_TILEPRO_IMM16_X0_LO_PCREL)
612 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL, R_TILEPRO_IMM16_X1_LO_PCREL)
613 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL, R_TILEPRO_IMM16_X0_HI_PCREL)
614 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL, R_TILEPRO_IMM16_X1_HI_PCREL)
615 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL, R_TILEPRO_IMM16_X0_HA_PCREL)
616 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL, R_TILEPRO_IMM16_X1_HA_PCREL)
617
618 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT, R_TILEPRO_IMM16_X0_GOT)
619 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT, R_TILEPRO_IMM16_X1_GOT)
620 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_LO, R_TILEPRO_IMM16_X0_GOT_LO)
621 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_LO, R_TILEPRO_IMM16_X1_GOT_LO)
622 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HI, R_TILEPRO_IMM16_X0_GOT_HI)
623 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HI, R_TILEPRO_IMM16_X1_GOT_HI)
624 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HA, R_TILEPRO_IMM16_X0_GOT_HA)
625 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HA, R_TILEPRO_IMM16_X1_GOT_HA)
626
627 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X0, R_TILEPRO_MMSTART_X0)
628 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X0, R_TILEPRO_MMEND_X0)
629 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X1, R_TILEPRO_MMSTART_X1)
630 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X1, R_TILEPRO_MMEND_X1)
631 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X0, R_TILEPRO_SHAMT_X0)
632 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X1, R_TILEPRO_SHAMT_X1)
633 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y0, R_TILEPRO_SHAMT_Y0)
634 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y1, R_TILEPRO_SHAMT_Y1)
635
636 TH_REMAP (BFD_RELOC_TILEPRO_TLS_GD_CALL, R_TILEPRO_TLS_GD_CALL)
637 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD, R_TILEPRO_IMM8_X0_TLS_GD_ADD)
638 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD, R_TILEPRO_IMM8_X1_TLS_GD_ADD)
639 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD, R_TILEPRO_IMM8_Y0_TLS_GD_ADD)
640 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD, R_TILEPRO_IMM8_Y1_TLS_GD_ADD)
641 TH_REMAP (BFD_RELOC_TILEPRO_TLS_IE_LOAD, R_TILEPRO_TLS_IE_LOAD)
642
643 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD, R_TILEPRO_IMM16_X0_TLS_GD)
644 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD, R_TILEPRO_IMM16_X1_TLS_GD)
645 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO, R_TILEPRO_IMM16_X0_TLS_GD_LO)
646 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO, R_TILEPRO_IMM16_X1_TLS_GD_LO)
647 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI, R_TILEPRO_IMM16_X0_TLS_GD_HI)
648 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI, R_TILEPRO_IMM16_X1_TLS_GD_HI)
649 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA, R_TILEPRO_IMM16_X0_TLS_GD_HA)
650 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA, R_TILEPRO_IMM16_X1_TLS_GD_HA)
651
652 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE, R_TILEPRO_IMM16_X0_TLS_IE)
653 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE, R_TILEPRO_IMM16_X1_TLS_IE)
654 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO, R_TILEPRO_IMM16_X0_TLS_IE_LO)
655 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO, R_TILEPRO_IMM16_X1_TLS_IE_LO)
656 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI, R_TILEPRO_IMM16_X0_TLS_IE_HI)
657 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI, R_TILEPRO_IMM16_X1_TLS_IE_HI)
658 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA, R_TILEPRO_IMM16_X0_TLS_IE_HA)
659 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA, R_TILEPRO_IMM16_X1_TLS_IE_HA)
660
661 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPMOD32, R_TILEPRO_TLS_DTPMOD32)
662 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPOFF32, R_TILEPRO_TLS_DTPOFF32)
663 TH_REMAP (BFD_RELOC_TILEPRO_TLS_TPOFF32, R_TILEPRO_TLS_TPOFF32)
664
665 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE, R_TILEPRO_IMM16_X0_TLS_LE)
666 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE, R_TILEPRO_IMM16_X1_TLS_LE)
667 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO, R_TILEPRO_IMM16_X0_TLS_LE_LO)
668 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO, R_TILEPRO_IMM16_X1_TLS_LE_LO)
669 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI, R_TILEPRO_IMM16_X0_TLS_LE_HI)
670 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI, R_TILEPRO_IMM16_X1_TLS_LE_HI)
671 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA, R_TILEPRO_IMM16_X0_TLS_LE_HA)
672 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA, R_TILEPRO_IMM16_X1_TLS_LE_HA)
673
674 #undef TH_REMAP
675
676 { BFD_RELOC_VTABLE_INHERIT, R_TILEPRO_GNU_VTINHERIT, tilepro_elf_howto_table2 },
677 { BFD_RELOC_VTABLE_ENTRY, R_TILEPRO_GNU_VTENTRY, tilepro_elf_howto_table2 },
678 };
679
680
681
682 /* The TILEPro linker needs to keep track of the number of relocs that it
683 decides to copy as dynamic relocs in check_relocs for each symbol.
684 This is so that it can later discard them if they are found to be
685 unnecessary. We store the information in a field extending the
686 regular ELF linker hash table. */
687
688 struct tilepro_elf_dyn_relocs
689 {
690 struct tilepro_elf_dyn_relocs *next;
691
692 /* The input section of the reloc. */
693 asection *sec;
694
695 /* Total number of relocs copied for the input section. */
696 bfd_size_type count;
697
698 /* Number of pc-relative relocs copied for the input section. */
699 bfd_size_type pc_count;
700 };
701
702 /* TILEPRO ELF linker hash entry. */
703
704 struct tilepro_elf_link_hash_entry
705 {
706 struct elf_link_hash_entry elf;
707
708 /* Track dynamic relocs copied for this symbol. */
709 struct tilepro_elf_dyn_relocs *dyn_relocs;
710
711 #define GOT_UNKNOWN 0
712 #define GOT_NORMAL 1
713 #define GOT_TLS_GD 2
714 #define GOT_TLS_IE 4
715 unsigned char tls_type;
716 };
717
718 #define tilepro_elf_hash_entry(ent) \
719 ((struct tilepro_elf_link_hash_entry *)(ent))
720
721 struct _bfd_tilepro_elf_obj_tdata
722 {
723 struct elf_obj_tdata root;
724
725 /* tls_type for each local got entry. */
726 char *local_got_tls_type;
727 };
728
729 #define _bfd_tilepro_elf_tdata(abfd) \
730 ((struct _bfd_tilepro_elf_obj_tdata *) (abfd)->tdata.any)
731
732 #define _bfd_tilepro_elf_local_got_tls_type(abfd) \
733 (_bfd_tilepro_elf_tdata (abfd)->local_got_tls_type)
734
735 #define is_tilepro_elf(bfd) \
736 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
737 && elf_tdata (bfd) != NULL \
738 && elf_object_id (bfd) == TILEPRO_ELF_DATA)
739
740 /* Allocate TILEPro ELF private object data. */
741
742 static bfd_boolean
tilepro_elf_mkobject(bfd * abfd)743 tilepro_elf_mkobject (bfd *abfd)
744 {
745 return bfd_elf_allocate_object (abfd,
746 sizeof (struct _bfd_tilepro_elf_obj_tdata),
747 TILEPRO_ELF_DATA);
748 }
749
750 #include "elf/common.h"
751 #include "elf/internal.h"
752
753 struct tilepro_elf_link_hash_table
754 {
755 struct elf_link_hash_table elf;
756
757 /* Short-cuts to get to dynamic linker sections. */
758 asection *sdynbss;
759 asection *srelbss;
760
761 /* Small local sym to section mapping cache. */
762 struct sym_cache sym_cache;
763 };
764
765 /* Get the Tilepro ELF linker hash table from a link_info structure. */
766 #define tilepro_elf_hash_table(p) \
767 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
768 == TILEPRO_ELF_DATA \
769 ? ((struct tilepro_elf_link_hash_table *) ((p)->hash)) : NULL)
770
771 static reloc_howto_type *
tilepro_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)772 tilepro_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
773 bfd_reloc_code_real_type code)
774 {
775 unsigned int i;
776
777 for (i = ARRAY_SIZE (tilepro_reloc_map); i--;)
778 {
779 const reloc_map * entry;
780
781 entry = tilepro_reloc_map + i;
782
783 if (entry->bfd_reloc_val == code)
784 return entry->table + (entry->tilepro_reloc_val
785 - entry->table[0].type);
786 }
787
788 return NULL;
789 }
790
791 static reloc_howto_type *
tilepro_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)792 tilepro_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
793 const char *r_name)
794 {
795 unsigned int i;
796
797 for (i = 0;
798 i < (sizeof (tilepro_elf_howto_table)
799 / sizeof (tilepro_elf_howto_table[0]));
800 i++)
801 if (tilepro_elf_howto_table[i].name != NULL
802 && strcasecmp (tilepro_elf_howto_table[i].name, r_name) == 0)
803 return &tilepro_elf_howto_table[i];
804
805 return NULL;
806 }
807
808 /* Set the howto pointer for an TILEPro ELF reloc. */
809
810 static void
tilepro_info_to_howto_rela(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)811 tilepro_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
812 arelent * cache_ptr,
813 Elf_Internal_Rela * dst)
814 {
815 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
816
817 if (r_type <= (unsigned int) R_TILEPRO_IMM16_X1_TLS_LE_HA)
818 cache_ptr->howto = &tilepro_elf_howto_table [r_type];
819 else if (r_type - R_TILEPRO_GNU_VTINHERIT
820 <= (unsigned int) R_TILEPRO_GNU_VTENTRY)
821 cache_ptr->howto
822 = &tilepro_elf_howto_table2 [r_type - R_TILEPRO_GNU_VTINHERIT];
823 else
824 abort ();
825 }
826
827 typedef tilepro_bundle_bits (*tilepro_create_func)(int);
828
829 static const tilepro_create_func reloc_to_create_func[] =
830 {
831 /* The first fourteen relocation types don't correspond to operands */
832 NULL,
833 NULL,
834 NULL,
835 NULL,
836 NULL,
837 NULL,
838 NULL,
839 NULL,
840 NULL,
841 NULL,
842 NULL,
843 NULL,
844 NULL,
845 NULL,
846
847 /* The remaining relocations are used for immediate operands */
848 create_BrOff_X1,
849 create_JOffLong_X1,
850 create_JOffLong_X1,
851 create_Imm8_X0,
852 create_Imm8_Y0,
853 create_Imm8_X1,
854 create_Imm8_Y1,
855 create_MT_Imm15_X1,
856 create_MF_Imm15_X1,
857 create_Imm16_X0,
858 create_Imm16_X1,
859 create_Imm16_X0,
860 create_Imm16_X1,
861 create_Imm16_X0,
862 create_Imm16_X1,
863 create_Imm16_X0,
864 create_Imm16_X1,
865 create_Imm16_X0,
866 create_Imm16_X1,
867 create_Imm16_X0,
868 create_Imm16_X1,
869 create_Imm16_X0,
870 create_Imm16_X1,
871 create_Imm16_X0,
872 create_Imm16_X1,
873 create_Imm16_X0,
874 create_Imm16_X1,
875 create_Imm16_X0,
876 create_Imm16_X1,
877 create_Imm16_X0,
878 create_Imm16_X1,
879 create_Imm16_X0,
880 create_Imm16_X1,
881 create_MMStart_X0,
882 create_MMEnd_X0,
883 create_MMStart_X1,
884 create_MMEnd_X1,
885 create_ShAmt_X0,
886 create_ShAmt_X1,
887 create_ShAmt_Y0,
888 create_ShAmt_Y1,
889
890 create_Dest_Imm8_X1,
891 NULL,
892 NULL,
893 NULL,
894 NULL,
895 NULL,
896 NULL,
897 NULL,
898 NULL,
899 NULL,
900 NULL,
901
902 create_Imm16_X0,
903 create_Imm16_X1,
904 create_Imm16_X0,
905 create_Imm16_X1,
906 create_Imm16_X0,
907 create_Imm16_X1,
908 create_Imm16_X0,
909 create_Imm16_X1,
910 create_Imm16_X0,
911 create_Imm16_X1,
912 create_Imm16_X0,
913 create_Imm16_X1,
914 create_Imm16_X0,
915 create_Imm16_X1,
916 create_Imm16_X0,
917 create_Imm16_X1,
918
919 NULL,
920 NULL,
921 NULL,
922
923 create_Imm16_X0,
924 create_Imm16_X1,
925 create_Imm16_X0,
926 create_Imm16_X1,
927 create_Imm16_X0,
928 create_Imm16_X1,
929 create_Imm16_X0,
930 create_Imm16_X1,
931 };
932
933 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
934
935 /* Support for core dump NOTE sections. */
936
937 static bfd_boolean
tilepro_elf_grok_prstatus(bfd * abfd,Elf_Internal_Note * note)938 tilepro_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
939 {
940 int offset;
941 size_t size;
942
943 if (note->descsz != TILEPRO_PRSTATUS_SIZEOF)
944 return FALSE;
945
946 /* pr_cursig */
947 elf_tdata (abfd)->core->signal =
948 bfd_get_16 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_CURSIG);
949
950 /* pr_pid */
951 elf_tdata (abfd)->core->pid =
952 bfd_get_32 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_PID);
953
954 /* pr_reg */
955 offset = TILEPRO_PRSTATUS_OFFSET_PR_REG;
956 size = TILEPRO_GREGSET_T_SIZE;
957
958 /* Make a ".reg/999" section. */
959 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
960 size, note->descpos + offset);
961 }
962
963 static bfd_boolean
tilepro_elf_grok_psinfo(bfd * abfd,Elf_Internal_Note * note)964 tilepro_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
965 {
966 if (note->descsz != TILEPRO_PRPSINFO_SIZEOF)
967 return FALSE;
968
969 elf_tdata (abfd)->core->program
970 = _bfd_elfcore_strndup (abfd,
971 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_FNAME,
972 16);
973 elf_tdata (abfd)->core->command
974 = _bfd_elfcore_strndup (abfd,
975 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_PSARGS,
976 ELF_PR_PSARGS_SIZE);
977
978
979 /* Note that for some reason, a spurious space is tacked
980 onto the end of the args in some (at least one anyway)
981 implementations, so strip it off if it exists. */
982 {
983 char *command = elf_tdata (abfd)->core->command;
984 int n = strlen (command);
985
986 if (0 < n && command[n - 1] == ' ')
987 command[n - 1] = '\0';
988 }
989
990 return TRUE;
991 }
992
993
994 static void
tilepro_elf_append_rela_32(bfd * abfd,asection * s,Elf_Internal_Rela * rel)995 tilepro_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
996 {
997 Elf32_External_Rela *loc32;
998
999 loc32 = (Elf32_External_Rela *) s->contents;
1000 loc32 += s->reloc_count++;
1001 bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32);
1002 }
1003
1004 /* PLT/GOT stuff */
1005
1006 /* The procedure linkage table starts with the following header:
1007
1008 {
1009 rli r29, r29, 16
1010 lwadd r28, r27, 4
1011 }
1012 lw r27, r27
1013 {
1014 info 10 ## SP not offset, return PC in LR
1015 jr r27
1016 }
1017
1018 Subsequent entries are the following, jumping to the header at the end:
1019
1020 lnk r28
1021 1:
1022 {
1023 auli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1024 auli r27, r28, <_GLOBAL_OFFSET_TABLE_ - 1b>
1025 }
1026 {
1027 addli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1028 addli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1029 }
1030 {
1031 auli r29, zero, MY_PLT_INDEX
1032 lw r28, r28
1033 }
1034 {
1035 info 10 ## SP not offset, return PC in LR
1036 jr r28
1037 }
1038
1039 We initially store MY_PLT_INDEX in the high bits so that we can use the all
1040 16 bits as an unsigned offset; if we use the low bits we would get an
1041 unwanted sign extension. The PLT header then rotates the index to get the
1042 right value, before calling the resolution routine. This computation can
1043 fit in unused bundle slots so it's free.
1044
1045 This code sequence lets the code at at the start of the PLT determine
1046 which PLT entry was executed by examining 'r29'.
1047
1048 Note that MY_PLT_INDEX skips over the header entries, so the first
1049 actual jump table entry has index zero.
1050 */
1051
1052 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1053 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1054
1055 #define PLT_HEADER_SIZE \
1056 (PLT_HEADER_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES)
1057 #define PLT_ENTRY_SIZE \
1058 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES)
1059
1060 /* The size in bytes of an entry in the global offset table. */
1061
1062 #define GOT_ENTRY_SIZE TILEPRO_BYTES_PER_WORD
1063
1064 #define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE)
1065
1066
1067 static const bfd_byte
1068 tilepro_plt0_entry[PLT_HEADER_SIZE] =
1069 {
1070 0x5d, 0x07, 0x03, 0x70,
1071 0x6e, 0x23, 0xd0, 0x30, /* { rli r29, r29, 16 ; lwadd r28, r27, 4 } */
1072 0x00, 0x50, 0xba, 0x6d,
1073 0x00, 0x08, 0x6d, 0xdc, /* { lw r27, r27 } */
1074 0xff, 0xaf, 0x10, 0x50,
1075 0x60, 0x03, 0x18, 0x08, /* { info 10 ; jr r27 } */
1076 };
1077
1078 static const bfd_byte
1079 tilepro_short_plt_entry[PLT_ENTRY_SIZE] =
1080 {
1081 0x00, 0x50, 0x16, 0x70,
1082 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */
1083 0x1c, 0x07, 0x00, 0xa0,
1084 0x8d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r28, 0 } */
1085 0xdd, 0x0f, 0x00, 0x30,
1086 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */
1087 0xff, 0xaf, 0x10, 0x50,
1088 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */
1089 0x00, 0x00, 0x00, 0x00,
1090 0x00, 0x00, 0x00, 0x00,
1091 };
1092
1093 static const bfd_byte
1094 tilepro_long_plt_entry[PLT_ENTRY_SIZE] =
1095 {
1096 0x00, 0x50, 0x16, 0x70,
1097 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */
1098 0x1c, 0x07, 0x00, 0xb0,
1099 0x8d, 0x03, 0x00, 0x20, /* { auli r28, r28, 0 ; auli r27, r28, 0 } */
1100 0x1c, 0x07, 0x00, 0xa0,
1101 0x6d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r27, 0 } */
1102 0xdd, 0x0f, 0x00, 0x30,
1103 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */
1104 0xff, 0xaf, 0x10, 0x50,
1105 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */
1106 };
1107
1108 static bfd_vma
tilepro_ha16(bfd_vma vma)1109 tilepro_ha16(bfd_vma vma)
1110 {
1111 return ((vma >> 16) + ((vma >> 15) & 1)) & 0xffff;
1112 }
1113
1114 static int
tilepro_plt_entry_build(asection * splt,asection * sgotplt,bfd_vma offset,bfd_vma * r_offset)1115 tilepro_plt_entry_build (asection *splt, asection *sgotplt, bfd_vma offset,
1116 bfd_vma *r_offset)
1117 {
1118 int plt_index = (offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
1119 int got_offset = plt_index * GOT_ENTRY_SIZE + GOTPLT_HEADER_SIZE;
1120 tilepro_bundle_bits *pc;
1121
1122 /* Compute the distance from the got entry to the lnk. */
1123 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1124 + sgotplt->output_offset
1125 + got_offset
1126 - splt->output_section->vma
1127 - splt->output_offset
1128 - offset
1129 - TILEPRO_BUNDLE_SIZE_IN_BYTES;
1130
1131 /* Compute the distance to GOTPLT[0]. */
1132 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1133
1134 /* Check whether we can use the short plt entry with 16-bit offset. */
1135 bfd_boolean short_plt_entry =
1136 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1137
1138 /* Copy the plt entry template. */
1139 memcpy (splt->contents + offset,
1140 short_plt_entry ? tilepro_short_plt_entry : tilepro_long_plt_entry,
1141 PLT_ENTRY_SIZE);
1142
1143 /* Write the immediate offsets. */
1144 pc = (tilepro_bundle_bits *)(splt->contents + offset);
1145 pc++;
1146
1147 if (!short_plt_entry)
1148 {
1149 /* { auli r28, r28, &GOTPLT[MY_GOT_INDEX] ; auli r27, r28, &GOTPLT[0] } */
1150 *pc++ |= create_Imm16_X0 (tilepro_ha16 (dist_got_entry))
1151 | create_Imm16_X1 (tilepro_ha16 (dist_got0));
1152 }
1153
1154 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r28, &GOTPLT[0] } or
1155 { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r27, &GOTPLT[0] } */
1156 *pc++ |= create_Imm16_X0 (dist_got_entry)
1157 | create_Imm16_X1 (dist_got0);
1158
1159 /* { auli r29, zero, MY_PLT_INDEX ; lw r28, r28 } */
1160 *pc |= create_Imm16_X0 (plt_index);
1161
1162 /* Set the relocation offset. */
1163 *r_offset = got_offset;
1164
1165 return plt_index;
1166 }
1167
1168 #define TILEPRO_ELF_RELA_BYTES (sizeof(Elf32_External_Rela))
1169
1170
1171 /* Create an entry in an TILEPro ELF linker hash table. */
1172
1173 static struct bfd_hash_entry *
link_hash_newfunc(struct bfd_hash_entry * entry,struct bfd_hash_table * table,const char * string)1174 link_hash_newfunc (struct bfd_hash_entry *entry,
1175 struct bfd_hash_table *table, const char *string)
1176 {
1177 /* Allocate the structure if it has not already been allocated by a
1178 subclass. */
1179 if (entry == NULL)
1180 {
1181 entry =
1182 bfd_hash_allocate (table,
1183 sizeof (struct tilepro_elf_link_hash_entry));
1184 if (entry == NULL)
1185 return entry;
1186 }
1187
1188 /* Call the allocation method of the superclass. */
1189 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1190 if (entry != NULL)
1191 {
1192 struct tilepro_elf_link_hash_entry *eh;
1193
1194 eh = (struct tilepro_elf_link_hash_entry *) entry;
1195 eh->dyn_relocs = NULL;
1196 eh->tls_type = GOT_UNKNOWN;
1197 }
1198
1199 return entry;
1200 }
1201
1202 /* Create a TILEPRO ELF linker hash table. */
1203
1204 static struct bfd_link_hash_table *
tilepro_elf_link_hash_table_create(bfd * abfd)1205 tilepro_elf_link_hash_table_create (bfd *abfd)
1206 {
1207 struct tilepro_elf_link_hash_table *ret;
1208 bfd_size_type amt = sizeof (struct tilepro_elf_link_hash_table);
1209
1210 ret = (struct tilepro_elf_link_hash_table *) bfd_zmalloc (amt);
1211 if (ret == NULL)
1212 return NULL;
1213
1214 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1215 sizeof (struct tilepro_elf_link_hash_entry),
1216 TILEPRO_ELF_DATA))
1217 {
1218 free (ret);
1219 return NULL;
1220 }
1221
1222 return &ret->elf.root;
1223 }
1224
1225 /* Create the .got section. */
1226
1227 static bfd_boolean
tilepro_elf_create_got_section(bfd * abfd,struct bfd_link_info * info)1228 tilepro_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1229 {
1230 flagword flags;
1231 asection *s, *s_got;
1232 struct elf_link_hash_entry *h;
1233 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1234 struct elf_link_hash_table *htab = elf_hash_table (info);
1235
1236 /* This function may be called more than once. */
1237 s = bfd_get_linker_section (abfd, ".got");
1238 if (s != NULL)
1239 return TRUE;
1240
1241 flags = bed->dynamic_sec_flags;
1242
1243 s = bfd_make_section_with_flags (abfd,
1244 (bed->rela_plts_and_copies_p
1245 ? ".rela.got" : ".rel.got"),
1246 (bed->dynamic_sec_flags
1247 | SEC_READONLY));
1248 if (s == NULL
1249 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1250 return FALSE;
1251 htab->srelgot = s;
1252
1253 s = s_got = bfd_make_section_with_flags (abfd, ".got", flags);
1254 if (s == NULL
1255 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1256 return FALSE;
1257 htab->sgot = s;
1258
1259 /* The first bit of the global offset table is the header. */
1260 s->size += bed->got_header_size;
1261
1262 if (bed->want_got_plt)
1263 {
1264 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
1265 if (s == NULL
1266 || !bfd_set_section_alignment (abfd, s,
1267 bed->s->log_file_align))
1268 return FALSE;
1269 htab->sgotplt = s;
1270
1271 /* Reserve room for the header. */
1272 s->size += GOTPLT_HEADER_SIZE;
1273 }
1274
1275 if (bed->want_got_sym)
1276 {
1277 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1278 section. We don't do this in the linker script because we don't want
1279 to define the symbol if we are not creating a global offset
1280 table. */
1281 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1282 "_GLOBAL_OFFSET_TABLE_");
1283 elf_hash_table (info)->hgot = h;
1284 if (h == NULL)
1285 return FALSE;
1286 }
1287
1288 return TRUE;
1289 }
1290
1291 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1292 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1293 hash table. */
1294
1295 static bfd_boolean
tilepro_elf_create_dynamic_sections(bfd * dynobj,struct bfd_link_info * info)1296 tilepro_elf_create_dynamic_sections (bfd *dynobj,
1297 struct bfd_link_info *info)
1298 {
1299 struct tilepro_elf_link_hash_table *htab;
1300
1301 htab = tilepro_elf_hash_table (info);
1302 BFD_ASSERT (htab != NULL);
1303
1304 if (!tilepro_elf_create_got_section (dynobj, info))
1305 return FALSE;
1306
1307 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1308 return FALSE;
1309
1310 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1311 if (!bfd_link_pic (info))
1312 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1313
1314 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1315 || (!bfd_link_pic (info) && !htab->srelbss))
1316 abort ();
1317
1318 return TRUE;
1319 }
1320
1321 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1322
1323 static void
tilepro_elf_copy_indirect_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * dir,struct elf_link_hash_entry * ind)1324 tilepro_elf_copy_indirect_symbol (struct bfd_link_info *info,
1325 struct elf_link_hash_entry *dir,
1326 struct elf_link_hash_entry *ind)
1327 {
1328 struct tilepro_elf_link_hash_entry *edir, *eind;
1329
1330 edir = (struct tilepro_elf_link_hash_entry *) dir;
1331 eind = (struct tilepro_elf_link_hash_entry *) ind;
1332
1333 if (eind->dyn_relocs != NULL)
1334 {
1335 if (edir->dyn_relocs != NULL)
1336 {
1337 struct tilepro_elf_dyn_relocs **pp;
1338 struct tilepro_elf_dyn_relocs *p;
1339
1340 /* Add reloc counts against the indirect sym to the direct sym
1341 list. Merge any entries against the same section. */
1342 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1343 {
1344 struct tilepro_elf_dyn_relocs *q;
1345
1346 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1347 if (q->sec == p->sec)
1348 {
1349 q->pc_count += p->pc_count;
1350 q->count += p->count;
1351 *pp = p->next;
1352 break;
1353 }
1354 if (q == NULL)
1355 pp = &p->next;
1356 }
1357 *pp = edir->dyn_relocs;
1358 }
1359
1360 edir->dyn_relocs = eind->dyn_relocs;
1361 eind->dyn_relocs = NULL;
1362 }
1363
1364 if (ind->root.type == bfd_link_hash_indirect
1365 && dir->got.refcount <= 0)
1366 {
1367 edir->tls_type = eind->tls_type;
1368 eind->tls_type = GOT_UNKNOWN;
1369 }
1370 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1371 }
1372
1373 static int
tilepro_tls_translate_to_le(int r_type)1374 tilepro_tls_translate_to_le (int r_type)
1375 {
1376 switch (r_type)
1377 {
1378 case R_TILEPRO_IMM16_X0_TLS_GD:
1379 case R_TILEPRO_IMM16_X0_TLS_IE:
1380 return R_TILEPRO_IMM16_X0_TLS_LE;
1381
1382 case R_TILEPRO_IMM16_X1_TLS_GD:
1383 case R_TILEPRO_IMM16_X1_TLS_IE:
1384 return R_TILEPRO_IMM16_X1_TLS_LE;
1385
1386 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1387 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1388 return R_TILEPRO_IMM16_X0_TLS_LE_LO;
1389
1390 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1391 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1392 return R_TILEPRO_IMM16_X1_TLS_LE_LO;
1393
1394 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1395 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1396 return R_TILEPRO_IMM16_X0_TLS_LE_HI;
1397
1398 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1399 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1400 return R_TILEPRO_IMM16_X1_TLS_LE_HI;
1401
1402 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1403 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1404 return R_TILEPRO_IMM16_X0_TLS_LE_HA;
1405
1406 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1407 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1408 return R_TILEPRO_IMM16_X1_TLS_LE_HA;
1409 }
1410 return r_type;
1411 }
1412
1413 static int
tilepro_tls_translate_to_ie(int r_type)1414 tilepro_tls_translate_to_ie (int r_type)
1415 {
1416 switch (r_type)
1417 {
1418 case R_TILEPRO_IMM16_X0_TLS_GD:
1419 case R_TILEPRO_IMM16_X0_TLS_IE:
1420 return R_TILEPRO_IMM16_X0_TLS_IE;
1421
1422 case R_TILEPRO_IMM16_X1_TLS_GD:
1423 case R_TILEPRO_IMM16_X1_TLS_IE:
1424 return R_TILEPRO_IMM16_X1_TLS_IE;
1425
1426 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1427 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1428 return R_TILEPRO_IMM16_X0_TLS_IE_LO;
1429
1430 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1431 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1432 return R_TILEPRO_IMM16_X1_TLS_IE_LO;
1433
1434 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1435 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1436 return R_TILEPRO_IMM16_X0_TLS_IE_HI;
1437
1438 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1439 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1440 return R_TILEPRO_IMM16_X1_TLS_IE_HI;
1441
1442 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1443 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1444 return R_TILEPRO_IMM16_X0_TLS_IE_HA;
1445
1446 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1447 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1448 return R_TILEPRO_IMM16_X1_TLS_IE_HA;
1449 }
1450 return r_type;
1451 }
1452
1453 static int
tilepro_elf_tls_transition(struct bfd_link_info * info,int r_type,int is_local)1454 tilepro_elf_tls_transition (struct bfd_link_info *info, int r_type,
1455 int is_local)
1456 {
1457 if (bfd_link_pic (info))
1458 return r_type;
1459
1460 if (is_local)
1461 return tilepro_tls_translate_to_le (r_type);
1462 else
1463 return tilepro_tls_translate_to_ie (r_type);
1464 }
1465
1466 /* Look through the relocs for a section during the first phase, and
1467 allocate space in the global offset table or procedure linkage
1468 table. */
1469
1470 static bfd_boolean
tilepro_elf_check_relocs(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)1471 tilepro_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1472 asection *sec, const Elf_Internal_Rela *relocs)
1473 {
1474 struct tilepro_elf_link_hash_table *htab;
1475 Elf_Internal_Shdr *symtab_hdr;
1476 struct elf_link_hash_entry **sym_hashes;
1477 const Elf_Internal_Rela *rel;
1478 const Elf_Internal_Rela *rel_end;
1479 asection *sreloc;
1480 int num_relocs;
1481
1482 if (bfd_link_relocatable (info))
1483 return TRUE;
1484
1485 htab = tilepro_elf_hash_table (info);
1486 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1487 sym_hashes = elf_sym_hashes (abfd);
1488
1489 sreloc = NULL;
1490
1491 num_relocs = sec->reloc_count;
1492
1493 BFD_ASSERT (is_tilepro_elf (abfd) || num_relocs == 0);
1494
1495 if (htab->elf.dynobj == NULL)
1496 htab->elf.dynobj = abfd;
1497
1498 rel_end = relocs + num_relocs;
1499 for (rel = relocs; rel < rel_end; rel++)
1500 {
1501 unsigned int r_type;
1502 unsigned long r_symndx;
1503 struct elf_link_hash_entry *h;
1504 int tls_type;
1505
1506 r_symndx = ELF32_R_SYM (rel->r_info);
1507 r_type = ELF32_R_TYPE (rel->r_info);
1508
1509 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1510 {
1511 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1512 abfd, r_symndx);
1513 return FALSE;
1514 }
1515
1516 if (r_symndx < symtab_hdr->sh_info)
1517 h = NULL;
1518 else
1519 {
1520 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1521 while (h->root.type == bfd_link_hash_indirect
1522 || h->root.type == bfd_link_hash_warning)
1523 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1524
1525 /* PR15323, ref flags aren't set for references in the same
1526 object. */
1527 h->root.non_ir_ref = 1;
1528 }
1529
1530 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL);
1531 switch (r_type)
1532 {
1533 case R_TILEPRO_IMM16_X0_TLS_LE:
1534 case R_TILEPRO_IMM16_X1_TLS_LE:
1535 case R_TILEPRO_IMM16_X0_TLS_LE_LO:
1536 case R_TILEPRO_IMM16_X1_TLS_LE_LO:
1537 case R_TILEPRO_IMM16_X0_TLS_LE_HI:
1538 case R_TILEPRO_IMM16_X1_TLS_LE_HI:
1539 case R_TILEPRO_IMM16_X0_TLS_LE_HA:
1540 case R_TILEPRO_IMM16_X1_TLS_LE_HA:
1541 if (bfd_link_pic (info))
1542 goto r_tilepro_plt32;
1543 break;
1544
1545 case R_TILEPRO_IMM16_X0_TLS_GD:
1546 case R_TILEPRO_IMM16_X1_TLS_GD:
1547 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1548 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1549 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1550 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1551 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1552 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1553 BFD_ASSERT (bfd_link_pic (info));
1554 tls_type = GOT_TLS_GD;
1555 goto have_got_reference;
1556
1557 case R_TILEPRO_IMM16_X0_TLS_IE:
1558 case R_TILEPRO_IMM16_X1_TLS_IE:
1559 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1560 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1561 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1562 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1563 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1564 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1565 tls_type = GOT_TLS_IE;
1566 if (bfd_link_pic (info))
1567 info->flags |= DF_STATIC_TLS;
1568 goto have_got_reference;
1569
1570 case R_TILEPRO_IMM16_X0_GOT:
1571 case R_TILEPRO_IMM16_X1_GOT:
1572 case R_TILEPRO_IMM16_X0_GOT_LO:
1573 case R_TILEPRO_IMM16_X1_GOT_LO:
1574 case R_TILEPRO_IMM16_X0_GOT_HI:
1575 case R_TILEPRO_IMM16_X1_GOT_HI:
1576 case R_TILEPRO_IMM16_X0_GOT_HA:
1577 case R_TILEPRO_IMM16_X1_GOT_HA:
1578 tls_type = GOT_NORMAL;
1579 /* Fall Through */
1580
1581 have_got_reference:
1582 /* This symbol requires a global offset table entry. */
1583 {
1584 int old_tls_type;
1585
1586 if (h != NULL)
1587 {
1588 h->got.refcount += 1;
1589 old_tls_type = tilepro_elf_hash_entry(h)->tls_type;
1590 }
1591 else
1592 {
1593 bfd_signed_vma *local_got_refcounts;
1594
1595 /* This is a global offset table entry for a local symbol. */
1596 local_got_refcounts = elf_local_got_refcounts (abfd);
1597 if (local_got_refcounts == NULL)
1598 {
1599 bfd_size_type size;
1600
1601 size = symtab_hdr->sh_info;
1602 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1603 local_got_refcounts = ((bfd_signed_vma *)
1604 bfd_zalloc (abfd, size));
1605 if (local_got_refcounts == NULL)
1606 return FALSE;
1607 elf_local_got_refcounts (abfd) = local_got_refcounts;
1608 _bfd_tilepro_elf_local_got_tls_type (abfd)
1609 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1610 }
1611 local_got_refcounts[r_symndx] += 1;
1612 old_tls_type =
1613 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx];
1614 }
1615
1616 /* If a TLS symbol is accessed using IE at least once,
1617 there is no point to use dynamic model for it. */
1618 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1619 && (old_tls_type != GOT_TLS_GD
1620 || tls_type != GOT_TLS_IE))
1621 {
1622 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1623 tls_type = old_tls_type;
1624 else
1625 {
1626 (*_bfd_error_handler)
1627 (_("%B: `%s' accessed both as normal and thread local symbol"),
1628 abfd, h ? h->root.root.string : "<local>");
1629 return FALSE;
1630 }
1631 }
1632
1633 if (old_tls_type != tls_type)
1634 {
1635 if (h != NULL)
1636 tilepro_elf_hash_entry (h)->tls_type = tls_type;
1637 else
1638 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx] =
1639 tls_type;
1640 }
1641 }
1642
1643 if (htab->elf.sgot == NULL)
1644 {
1645 if (!tilepro_elf_create_got_section (htab->elf.dynobj, info))
1646 return FALSE;
1647 }
1648 break;
1649
1650 case R_TILEPRO_TLS_GD_CALL:
1651 if (bfd_link_pic (info))
1652 {
1653 /* These are basically R_TILEPRO_JOFFLONG_X1_PLT relocs
1654 against __tls_get_addr. */
1655 struct bfd_link_hash_entry *bh = NULL;
1656 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1657 "__tls_get_addr", 0,
1658 bfd_und_section_ptr, 0,
1659 NULL, FALSE, FALSE,
1660 &bh))
1661 return FALSE;
1662 h = (struct elf_link_hash_entry *) bh;
1663 }
1664 else
1665 break;
1666 /* Fall through */
1667
1668 case R_TILEPRO_JOFFLONG_X1_PLT:
1669 /* This symbol requires a procedure linkage table entry. We
1670 actually build the entry in adjust_dynamic_symbol,
1671 because this might be a case of linking PIC code without
1672 linking in any dynamic objects, in which case we don't
1673 need to generate a procedure linkage table after all. */
1674
1675 if (h != NULL)
1676 {
1677 h->needs_plt = 1;
1678 h->plt.refcount += 1;
1679 }
1680 break;
1681
1682 case R_TILEPRO_32_PCREL:
1683 case R_TILEPRO_16_PCREL:
1684 case R_TILEPRO_8_PCREL:
1685 case R_TILEPRO_IMM16_X0_PCREL:
1686 case R_TILEPRO_IMM16_X1_PCREL:
1687 case R_TILEPRO_IMM16_X0_LO_PCREL:
1688 case R_TILEPRO_IMM16_X1_LO_PCREL:
1689 case R_TILEPRO_IMM16_X0_HI_PCREL:
1690 case R_TILEPRO_IMM16_X1_HI_PCREL:
1691 case R_TILEPRO_IMM16_X0_HA_PCREL:
1692 case R_TILEPRO_IMM16_X1_HA_PCREL:
1693 if (h != NULL)
1694 h->non_got_ref = 1;
1695
1696 if (h != NULL
1697 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1698 break;
1699 /* Fall through. */
1700
1701 case R_TILEPRO_32:
1702 case R_TILEPRO_16:
1703 case R_TILEPRO_8:
1704 case R_TILEPRO_LO16:
1705 case R_TILEPRO_HI16:
1706 case R_TILEPRO_HA16:
1707 case R_TILEPRO_COPY:
1708 case R_TILEPRO_GLOB_DAT:
1709 case R_TILEPRO_JMP_SLOT:
1710 case R_TILEPRO_RELATIVE:
1711 case R_TILEPRO_BROFF_X1:
1712 case R_TILEPRO_JOFFLONG_X1:
1713 case R_TILEPRO_IMM8_X0:
1714 case R_TILEPRO_IMM8_Y0:
1715 case R_TILEPRO_IMM8_X1:
1716 case R_TILEPRO_IMM8_Y1:
1717 case R_TILEPRO_DEST_IMM8_X1:
1718 case R_TILEPRO_MT_IMM15_X1:
1719 case R_TILEPRO_MF_IMM15_X1:
1720 case R_TILEPRO_IMM16_X0:
1721 case R_TILEPRO_IMM16_X1:
1722 case R_TILEPRO_IMM16_X0_LO:
1723 case R_TILEPRO_IMM16_X1_LO:
1724 case R_TILEPRO_IMM16_X0_HI:
1725 case R_TILEPRO_IMM16_X1_HI:
1726 case R_TILEPRO_IMM16_X0_HA:
1727 case R_TILEPRO_IMM16_X1_HA:
1728 case R_TILEPRO_MMSTART_X0:
1729 case R_TILEPRO_MMEND_X0:
1730 case R_TILEPRO_MMSTART_X1:
1731 case R_TILEPRO_MMEND_X1:
1732 case R_TILEPRO_SHAMT_X0:
1733 case R_TILEPRO_SHAMT_X1:
1734 case R_TILEPRO_SHAMT_Y0:
1735 case R_TILEPRO_SHAMT_Y1:
1736 if (h != NULL)
1737 h->non_got_ref = 1;
1738
1739 r_tilepro_plt32:
1740 if (h != NULL && !bfd_link_pic (info))
1741 {
1742 /* We may need a .plt entry if the function this reloc
1743 refers to is in a shared lib. */
1744 h->plt.refcount += 1;
1745 }
1746
1747 /* If we are creating a shared library, and this is a reloc
1748 against a global symbol, or a non PC relative reloc
1749 against a local symbol, then we need to copy the reloc
1750 into the shared library. However, if we are linking with
1751 -Bsymbolic, we do not need to copy a reloc against a
1752 global symbol which is defined in an object we are
1753 including in the link (i.e., DEF_REGULAR is set). At
1754 this point we have not seen all the input files, so it is
1755 possible that DEF_REGULAR is not set now but will be set
1756 later (it is never cleared). In case of a weak definition,
1757 DEF_REGULAR may be cleared later by a strong definition in
1758 a shared library. We account for that possibility below by
1759 storing information in the relocs_copied field of the hash
1760 table entry. A similar situation occurs when creating
1761 shared libraries and symbol visibility changes render the
1762 symbol local.
1763
1764 If on the other hand, we are creating an executable, we
1765 may need to keep relocations for symbols satisfied by a
1766 dynamic library if we manage to avoid copy relocs for the
1767 symbol. */
1768 if ((bfd_link_pic (info)
1769 && (sec->flags & SEC_ALLOC) != 0
1770 && (! tilepro_elf_howto_table[r_type].pc_relative
1771 || (h != NULL
1772 && (! info->symbolic
1773 || h->root.type == bfd_link_hash_defweak
1774 || !h->def_regular))))
1775 || (!bfd_link_pic (info)
1776 && (sec->flags & SEC_ALLOC) != 0
1777 && h != NULL
1778 && (h->root.type == bfd_link_hash_defweak
1779 || !h->def_regular)))
1780 {
1781 struct tilepro_elf_dyn_relocs *p;
1782 struct tilepro_elf_dyn_relocs **head;
1783
1784 /* When creating a shared object, we must copy these
1785 relocs into the output file. We create a reloc
1786 section in dynobj and make room for the reloc. */
1787 if (sreloc == NULL)
1788 {
1789 sreloc = _bfd_elf_make_dynamic_reloc_section
1790 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1791
1792 if (sreloc == NULL)
1793 return FALSE;
1794 }
1795
1796 /* If this is a global symbol, we count the number of
1797 relocations we need for this symbol. */
1798 if (h != NULL)
1799 head =
1800 &((struct tilepro_elf_link_hash_entry *) h)->dyn_relocs;
1801 else
1802 {
1803 /* Track dynamic relocs needed for local syms too.
1804 We really need local syms available to do this
1805 easily. Oh well. */
1806
1807 asection *s;
1808 void *vpp;
1809 Elf_Internal_Sym *isym;
1810
1811 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1812 abfd, r_symndx);
1813 if (isym == NULL)
1814 return FALSE;
1815
1816 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1817 if (s == NULL)
1818 s = sec;
1819
1820 vpp = &elf_section_data (s)->local_dynrel;
1821 head = (struct tilepro_elf_dyn_relocs **) vpp;
1822 }
1823
1824 p = *head;
1825 if (p == NULL || p->sec != sec)
1826 {
1827 bfd_size_type amt = sizeof *p;
1828 p = ((struct tilepro_elf_dyn_relocs *)
1829 bfd_alloc (htab->elf.dynobj, amt));
1830 if (p == NULL)
1831 return FALSE;
1832 p->next = *head;
1833 *head = p;
1834 p->sec = sec;
1835 p->count = 0;
1836 p->pc_count = 0;
1837 }
1838
1839 p->count += 1;
1840 if (tilepro_elf_howto_table[r_type].pc_relative)
1841 p->pc_count += 1;
1842 }
1843
1844 break;
1845
1846 case R_TILEPRO_GNU_VTINHERIT:
1847 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1848 return FALSE;
1849 break;
1850
1851 case R_TILEPRO_GNU_VTENTRY:
1852 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1853 return FALSE;
1854 break;
1855
1856 default:
1857 break;
1858 }
1859 }
1860
1861 return TRUE;
1862 }
1863
1864
1865 static asection *
tilepro_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)1866 tilepro_elf_gc_mark_hook (asection *sec,
1867 struct bfd_link_info *info,
1868 Elf_Internal_Rela *rel,
1869 struct elf_link_hash_entry *h,
1870 Elf_Internal_Sym *sym)
1871 {
1872 if (h != NULL)
1873 {
1874 switch (ELF32_R_TYPE (rel->r_info))
1875 {
1876 case R_TILEPRO_GNU_VTINHERIT:
1877 case R_TILEPRO_GNU_VTENTRY:
1878 return NULL;
1879 }
1880 }
1881
1882 /* FIXME: The test here, in check_relocs and in relocate_section
1883 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
1884 if (bfd_link_pic (info))
1885 {
1886 switch (ELF32_R_TYPE (rel->r_info))
1887 {
1888 case R_TILEPRO_TLS_GD_CALL:
1889 /* This reloc implicitly references __tls_get_addr. We know
1890 another reloc will reference the same symbol as the one
1891 on this reloc, so the real symbol and section will be
1892 gc marked when processing the other reloc. That lets
1893 us handle __tls_get_addr here. */
1894 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
1895 FALSE, FALSE, TRUE);
1896 BFD_ASSERT (h != NULL);
1897 h->mark = 1;
1898 if (h->u.weakdef != NULL)
1899 h->u.weakdef->mark = 1;
1900 sym = NULL;
1901 }
1902 }
1903
1904 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1905 }
1906
1907 /* Update the got entry reference counts for the section being removed. */
1908 static bfd_boolean
tilepro_elf_gc_sweep_hook(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)1909 tilepro_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1910 asection *sec, const Elf_Internal_Rela *relocs)
1911 {
1912 struct tilepro_elf_link_hash_table *htab;
1913 Elf_Internal_Shdr *symtab_hdr;
1914 struct elf_link_hash_entry **sym_hashes;
1915 bfd_signed_vma *local_got_refcounts;
1916 const Elf_Internal_Rela *rel, *relend;
1917
1918 if (bfd_link_relocatable (info))
1919 return TRUE;
1920
1921 BFD_ASSERT (is_tilepro_elf (abfd) || sec->reloc_count == 0);
1922
1923 elf_section_data (sec)->local_dynrel = NULL;
1924
1925 htab = tilepro_elf_hash_table (info);
1926 BFD_ASSERT (htab != NULL);
1927 symtab_hdr = &elf_symtab_hdr (abfd);
1928 sym_hashes = elf_sym_hashes (abfd);
1929 local_got_refcounts = elf_local_got_refcounts (abfd);
1930
1931 relend = relocs + sec->reloc_count;
1932 for (rel = relocs; rel < relend; rel++)
1933 {
1934 unsigned long r_symndx;
1935 unsigned int r_type;
1936 struct elf_link_hash_entry *h = NULL;
1937
1938 r_symndx = ELF32_R_SYM (rel->r_info);
1939 if (r_symndx >= symtab_hdr->sh_info)
1940 {
1941 struct tilepro_elf_link_hash_entry *eh;
1942 struct tilepro_elf_dyn_relocs **pp;
1943 struct tilepro_elf_dyn_relocs *p;
1944
1945 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1946 while (h->root.type == bfd_link_hash_indirect
1947 || h->root.type == bfd_link_hash_warning)
1948 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1949 eh = (struct tilepro_elf_link_hash_entry *) h;
1950 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1951 if (p->sec == sec)
1952 {
1953 /* Everything must go for SEC. */
1954 *pp = p->next;
1955 break;
1956 }
1957 }
1958
1959 r_type = ELF32_R_TYPE (rel->r_info);
1960 r_type = tilepro_elf_tls_transition (info, r_type, h != NULL);
1961 switch (r_type)
1962 {
1963 case R_TILEPRO_IMM16_X0_GOT:
1964 case R_TILEPRO_IMM16_X1_GOT:
1965 case R_TILEPRO_IMM16_X0_GOT_LO:
1966 case R_TILEPRO_IMM16_X1_GOT_LO:
1967 case R_TILEPRO_IMM16_X0_GOT_HI:
1968 case R_TILEPRO_IMM16_X1_GOT_HI:
1969 case R_TILEPRO_IMM16_X0_GOT_HA:
1970 case R_TILEPRO_IMM16_X1_GOT_HA:
1971 case R_TILEPRO_IMM16_X0_TLS_GD:
1972 case R_TILEPRO_IMM16_X1_TLS_GD:
1973 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1974 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1975 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1976 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1977 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1978 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1979 case R_TILEPRO_IMM16_X0_TLS_IE:
1980 case R_TILEPRO_IMM16_X1_TLS_IE:
1981 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1982 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1983 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1984 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1985 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1986 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1987 if (h != NULL)
1988 {
1989 if (h->got.refcount > 0)
1990 h->got.refcount--;
1991 }
1992 else
1993 {
1994 if (local_got_refcounts &&
1995 local_got_refcounts[r_symndx] > 0)
1996 local_got_refcounts[r_symndx]--;
1997 }
1998 break;
1999
2000 case R_TILEPRO_32_PCREL:
2001 case R_TILEPRO_16_PCREL:
2002 case R_TILEPRO_8_PCREL:
2003 case R_TILEPRO_IMM16_X0_PCREL:
2004 case R_TILEPRO_IMM16_X1_PCREL:
2005 case R_TILEPRO_IMM16_X0_LO_PCREL:
2006 case R_TILEPRO_IMM16_X1_LO_PCREL:
2007 case R_TILEPRO_IMM16_X0_HI_PCREL:
2008 case R_TILEPRO_IMM16_X1_HI_PCREL:
2009 case R_TILEPRO_IMM16_X0_HA_PCREL:
2010 case R_TILEPRO_IMM16_X1_HA_PCREL:
2011 if (h != NULL
2012 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2013 break;
2014 /* Fall through. */
2015
2016 case R_TILEPRO_32:
2017 case R_TILEPRO_16:
2018 case R_TILEPRO_8:
2019 case R_TILEPRO_LO16:
2020 case R_TILEPRO_HI16:
2021 case R_TILEPRO_HA16:
2022 case R_TILEPRO_COPY:
2023 case R_TILEPRO_GLOB_DAT:
2024 case R_TILEPRO_JMP_SLOT:
2025 case R_TILEPRO_RELATIVE:
2026 case R_TILEPRO_BROFF_X1:
2027 case R_TILEPRO_JOFFLONG_X1:
2028 case R_TILEPRO_IMM8_X0:
2029 case R_TILEPRO_IMM8_Y0:
2030 case R_TILEPRO_IMM8_X1:
2031 case R_TILEPRO_IMM8_Y1:
2032 case R_TILEPRO_DEST_IMM8_X1:
2033 case R_TILEPRO_MT_IMM15_X1:
2034 case R_TILEPRO_MF_IMM15_X1:
2035 case R_TILEPRO_IMM16_X0:
2036 case R_TILEPRO_IMM16_X1:
2037 case R_TILEPRO_IMM16_X0_LO:
2038 case R_TILEPRO_IMM16_X1_LO:
2039 case R_TILEPRO_IMM16_X0_HI:
2040 case R_TILEPRO_IMM16_X1_HI:
2041 case R_TILEPRO_IMM16_X0_HA:
2042 case R_TILEPRO_IMM16_X1_HA:
2043 case R_TILEPRO_MMSTART_X0:
2044 case R_TILEPRO_MMEND_X0:
2045 case R_TILEPRO_MMSTART_X1:
2046 case R_TILEPRO_MMEND_X1:
2047 case R_TILEPRO_SHAMT_X0:
2048 case R_TILEPRO_SHAMT_X1:
2049 case R_TILEPRO_SHAMT_Y0:
2050 case R_TILEPRO_SHAMT_Y1:
2051 if (bfd_link_pic (info))
2052 break;
2053 /* Fall through. */
2054
2055 case R_TILEPRO_JOFFLONG_X1_PLT:
2056 if (h != NULL)
2057 {
2058 if (h->plt.refcount > 0)
2059 h->plt.refcount--;
2060 }
2061 break;
2062
2063 default:
2064 break;
2065 }
2066 }
2067
2068 return TRUE;
2069 }
2070
2071 /* Adjust a symbol defined by a dynamic object and referenced by a
2072 regular object. The current definition is in some section of the
2073 dynamic object, but we're not including those sections. We have to
2074 change the definition to something the rest of the link can
2075 understand. */
2076
2077 static bfd_boolean
tilepro_elf_adjust_dynamic_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * h)2078 tilepro_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2079 struct elf_link_hash_entry *h)
2080 {
2081 struct tilepro_elf_link_hash_table *htab;
2082 struct tilepro_elf_link_hash_entry * eh;
2083 struct tilepro_elf_dyn_relocs *p;
2084 asection *s;
2085
2086 htab = tilepro_elf_hash_table (info);
2087 BFD_ASSERT (htab != NULL);
2088
2089 /* Make sure we know what is going on here. */
2090 BFD_ASSERT (htab->elf.dynobj != NULL
2091 && (h->needs_plt
2092 || h->u.weakdef != NULL
2093 || (h->def_dynamic
2094 && h->ref_regular
2095 && !h->def_regular)));
2096
2097 /* If this is a function, put it in the procedure linkage table. We
2098 will fill in the contents of the procedure linkage table later
2099 (although we could actually do it here). */
2100 if (h->type == STT_FUNC || h->needs_plt)
2101 {
2102 if (h->plt.refcount <= 0
2103 || SYMBOL_CALLS_LOCAL (info, h)
2104 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2105 && h->root.type == bfd_link_hash_undefweak))
2106 {
2107 /* This case can occur if we saw a R_TILEPRO_JOFFLONG_X1_PLT
2108 reloc in an input file, but the symbol was never referred
2109 to by a dynamic object, or if all references were garbage
2110 collected. In such a case, we don't actually need to build
2111 a procedure linkage table, and we can just do a
2112 R_TILEPRO_JOFFLONG_X1 relocation instead. */
2113 h->plt.offset = (bfd_vma) -1;
2114 h->needs_plt = 0;
2115 }
2116
2117 return TRUE;
2118 }
2119 else
2120 h->plt.offset = (bfd_vma) -1;
2121
2122 /* If this is a weak symbol, and there is a real definition, the
2123 processor independent code will have arranged for us to see the
2124 real definition first, and we can just use the same value. */
2125 if (h->u.weakdef != NULL)
2126 {
2127 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2128 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2129 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2130 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2131 return TRUE;
2132 }
2133
2134 /* This is a reference to a symbol defined by a dynamic object which
2135 is not a function. */
2136
2137 /* If we are creating a shared library, we must presume that the
2138 only references to the symbol are via the global offset table.
2139 For such cases we need not do anything here; the relocations will
2140 be handled correctly by relocate_section. */
2141 if (bfd_link_pic (info))
2142 return TRUE;
2143
2144 /* If there are no references to this symbol that do not use the
2145 GOT, we don't need to generate a copy reloc. */
2146 if (!h->non_got_ref)
2147 return TRUE;
2148
2149 /* If -z nocopyreloc was given, we won't generate them either. */
2150 if (info->nocopyreloc)
2151 {
2152 h->non_got_ref = 0;
2153 return TRUE;
2154 }
2155
2156 eh = (struct tilepro_elf_link_hash_entry *) h;
2157 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2158 {
2159 s = p->sec->output_section;
2160 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2161 break;
2162 }
2163
2164 /* If we didn't find any dynamic relocs in read-only sections, then
2165 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2166 if (p == NULL)
2167 {
2168 h->non_got_ref = 0;
2169 return TRUE;
2170 }
2171
2172 /* We must allocate the symbol in our .dynbss section, which will
2173 become part of the .bss section of the executable. There will be
2174 an entry for this symbol in the .dynsym section. The dynamic
2175 object will contain position independent code, so all references
2176 from the dynamic object to this symbol will go through the global
2177 offset table. The dynamic linker will use the .dynsym entry to
2178 determine the address it must put in the global offset table, so
2179 both the dynamic object and the regular object will refer to the
2180 same memory location for the variable. */
2181
2182 /* We must generate a R_TILEPRO_COPY reloc to tell the dynamic linker
2183 to copy the initial value out of the dynamic object and into the
2184 runtime process image. We need to remember the offset into the
2185 .rel.bss section we are going to use. */
2186 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2187 {
2188 htab->srelbss->size += TILEPRO_ELF_RELA_BYTES;
2189 h->needs_copy = 1;
2190 }
2191
2192 return _bfd_elf_adjust_dynamic_copy (info, h, htab->sdynbss);
2193 }
2194
2195 /* Allocate space in .plt, .got and associated reloc sections for
2196 dynamic relocs. */
2197
2198 static bfd_boolean
allocate_dynrelocs(struct elf_link_hash_entry * h,void * inf)2199 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2200 {
2201 struct bfd_link_info *info;
2202 struct tilepro_elf_link_hash_table *htab;
2203 struct tilepro_elf_link_hash_entry *eh;
2204 struct tilepro_elf_dyn_relocs *p;
2205
2206 if (h->root.type == bfd_link_hash_indirect)
2207 return TRUE;
2208
2209 info = (struct bfd_link_info *) inf;
2210 htab = tilepro_elf_hash_table (info);
2211 BFD_ASSERT (htab != NULL);
2212
2213 if (htab->elf.dynamic_sections_created
2214 && h->plt.refcount > 0)
2215 {
2216 /* Make sure this symbol is output as a dynamic symbol.
2217 Undefined weak syms won't yet be marked as dynamic. */
2218 if (h->dynindx == -1
2219 && !h->forced_local)
2220 {
2221 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2222 return FALSE;
2223 }
2224
2225 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2226 {
2227 asection *s = htab->elf.splt;
2228
2229 /* Allocate room for the header. */
2230 if (s->size == 0)
2231 {
2232 s->size = PLT_ENTRY_SIZE;
2233 }
2234
2235 h->plt.offset = s->size;
2236
2237 /* If this symbol is not defined in a regular file, and we are
2238 not generating a shared library, then set the symbol to this
2239 location in the .plt. This is required to make function
2240 pointers compare as equal between the normal executable and
2241 the shared library. */
2242 if (! bfd_link_pic (info)
2243 && !h->def_regular)
2244 {
2245 h->root.u.def.section = s;
2246 h->root.u.def.value = h->plt.offset;
2247 }
2248
2249 /* Make room for this entry. */
2250 s->size += PLT_ENTRY_SIZE;
2251
2252 /* We also need to make an entry in the .got.plt section. */
2253 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
2254
2255 /* We also need to make an entry in the .rela.plt section. */
2256 htab->elf.srelplt->size += TILEPRO_ELF_RELA_BYTES;
2257 }
2258 else
2259 {
2260 h->plt.offset = (bfd_vma) -1;
2261 h->needs_plt = 0;
2262 }
2263 }
2264 else
2265 {
2266 h->plt.offset = (bfd_vma) -1;
2267 h->needs_plt = 0;
2268 }
2269
2270 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2271 requiring no TLS entry. */
2272 if (h->got.refcount > 0
2273 && !bfd_link_pic (info)
2274 && h->dynindx == -1
2275 && tilepro_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2276 h->got.offset = (bfd_vma) -1;
2277 else if (h->got.refcount > 0)
2278 {
2279 asection *s;
2280 bfd_boolean dyn;
2281 int tls_type = tilepro_elf_hash_entry(h)->tls_type;
2282
2283 /* Make sure this symbol is output as a dynamic symbol.
2284 Undefined weak syms won't yet be marked as dynamic. */
2285 if (h->dynindx == -1
2286 && !h->forced_local)
2287 {
2288 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2289 return FALSE;
2290 }
2291
2292 s = htab->elf.sgot;
2293 h->got.offset = s->size;
2294 s->size += TILEPRO_BYTES_PER_WORD;
2295 /* R_TILEPRO_IMM16_Xn_TLS_GD entries need 2 consecutive GOT slots. */
2296 if (tls_type == GOT_TLS_GD)
2297 s->size += TILEPRO_BYTES_PER_WORD;
2298 dyn = htab->elf.dynamic_sections_created;
2299 /* R_TILEPRO_IMM16_Xn_TLS_IE_xxx needs one dynamic relocation,
2300 R_TILEPRO_IMM16_Xn_TLS_GD_xxx needs two if local symbol and two if
2301 global. */
2302 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2303 htab->elf.srelgot->size += 2 * TILEPRO_ELF_RELA_BYTES;
2304 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2305 bfd_link_pic (info),
2306 h))
2307 htab->elf.srelgot->size += TILEPRO_ELF_RELA_BYTES;
2308 }
2309 else
2310 h->got.offset = (bfd_vma) -1;
2311
2312 eh = (struct tilepro_elf_link_hash_entry *) h;
2313 if (eh->dyn_relocs == NULL)
2314 return TRUE;
2315
2316 /* In the shared -Bsymbolic case, discard space allocated for
2317 dynamic pc-relative relocs against symbols which turn out to be
2318 defined in regular objects. For the normal shared case, discard
2319 space for pc-relative relocs that have become local due to symbol
2320 visibility changes. */
2321
2322 if (bfd_link_pic (info))
2323 {
2324 if (SYMBOL_CALLS_LOCAL (info, h))
2325 {
2326 struct tilepro_elf_dyn_relocs **pp;
2327
2328 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2329 {
2330 p->count -= p->pc_count;
2331 p->pc_count = 0;
2332 if (p->count == 0)
2333 *pp = p->next;
2334 else
2335 pp = &p->next;
2336 }
2337 }
2338
2339 /* Also discard relocs on undefined weak syms with non-default
2340 visibility. */
2341 if (eh->dyn_relocs != NULL
2342 && h->root.type == bfd_link_hash_undefweak)
2343 {
2344 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2345 eh->dyn_relocs = NULL;
2346
2347 /* Make sure undefined weak symbols are output as a dynamic
2348 symbol in PIEs. */
2349 else if (h->dynindx == -1
2350 && !h->forced_local)
2351 {
2352 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2353 return FALSE;
2354 }
2355 }
2356 }
2357 else
2358 {
2359 /* For the non-shared case, discard space for relocs against
2360 symbols which turn out to need copy relocs or are not
2361 dynamic. */
2362
2363 if (!h->non_got_ref
2364 && ((h->def_dynamic
2365 && !h->def_regular)
2366 || (htab->elf.dynamic_sections_created
2367 && (h->root.type == bfd_link_hash_undefweak
2368 || h->root.type == bfd_link_hash_undefined))))
2369 {
2370 /* Make sure this symbol is output as a dynamic symbol.
2371 Undefined weak syms won't yet be marked as dynamic. */
2372 if (h->dynindx == -1
2373 && !h->forced_local)
2374 {
2375 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2376 return FALSE;
2377 }
2378
2379 /* If that succeeded, we know we'll be keeping all the
2380 relocs. */
2381 if (h->dynindx != -1)
2382 goto keep;
2383 }
2384
2385 eh->dyn_relocs = NULL;
2386
2387 keep: ;
2388 }
2389
2390 /* Finally, allocate space. */
2391 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2392 {
2393 asection *sreloc = elf_section_data (p->sec)->sreloc;
2394 sreloc->size += p->count * TILEPRO_ELF_RELA_BYTES;
2395 }
2396
2397 return TRUE;
2398 }
2399
2400 /* Find any dynamic relocs that apply to read-only sections. */
2401
2402 static bfd_boolean
readonly_dynrelocs(struct elf_link_hash_entry * h,void * inf)2403 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2404 {
2405 struct tilepro_elf_link_hash_entry *eh;
2406 struct tilepro_elf_dyn_relocs *p;
2407
2408 eh = (struct tilepro_elf_link_hash_entry *) h;
2409 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2410 {
2411 asection *s = p->sec->output_section;
2412
2413 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2414 {
2415 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2416
2417 info->flags |= DF_TEXTREL;
2418
2419 /* Not an error, just cut short the traversal. */
2420 return FALSE;
2421 }
2422 }
2423 return TRUE;
2424 }
2425
2426 /* Return true if the dynamic symbol for a given section should be
2427 omitted when creating a shared library. */
2428
2429 static bfd_boolean
tilepro_elf_omit_section_dynsym(bfd * output_bfd,struct bfd_link_info * info,asection * p)2430 tilepro_elf_omit_section_dynsym (bfd *output_bfd,
2431 struct bfd_link_info *info,
2432 asection *p)
2433 {
2434 /* We keep the .got section symbol so that explicit relocations
2435 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2436 can be turned into relocations against the .got symbol. */
2437 if (strcmp (p->name, ".got") == 0)
2438 return FALSE;
2439
2440 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2441 }
2442
2443 /* Set the sizes of the dynamic sections. */
2444
2445 #define ELF32_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2446
2447 static bfd_boolean
tilepro_elf_size_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)2448 tilepro_elf_size_dynamic_sections (bfd *output_bfd,
2449 struct bfd_link_info *info)
2450 {
2451 (void)output_bfd;
2452
2453 struct tilepro_elf_link_hash_table *htab;
2454 bfd *dynobj;
2455 asection *s;
2456 bfd *ibfd;
2457
2458 htab = tilepro_elf_hash_table (info);
2459 BFD_ASSERT (htab != NULL);
2460 dynobj = htab->elf.dynobj;
2461 BFD_ASSERT (dynobj != NULL);
2462
2463 if (elf_hash_table (info)->dynamic_sections_created)
2464 {
2465 /* Set the contents of the .interp section to the interpreter. */
2466 if (bfd_link_executable (info) && !info->nointerp)
2467 {
2468 s = bfd_get_linker_section (dynobj, ".interp");
2469 BFD_ASSERT (s != NULL);
2470 s->size = sizeof ELF32_DYNAMIC_INTERPRETER;
2471 s->contents = (unsigned char *) ELF32_DYNAMIC_INTERPRETER;
2472 }
2473 }
2474
2475 /* Set up .got offsets for local syms, and space for local dynamic
2476 relocs. */
2477 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2478 {
2479 bfd_signed_vma *local_got;
2480 bfd_signed_vma *end_local_got;
2481 char *local_tls_type;
2482 bfd_size_type locsymcount;
2483 Elf_Internal_Shdr *symtab_hdr;
2484 asection *srel;
2485
2486 if (! is_tilepro_elf (ibfd))
2487 continue;
2488
2489 for (s = ibfd->sections; s != NULL; s = s->next)
2490 {
2491 struct tilepro_elf_dyn_relocs *p;
2492
2493 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2494 {
2495 if (!bfd_is_abs_section (p->sec)
2496 && bfd_is_abs_section (p->sec->output_section))
2497 {
2498 /* Input section has been discarded, either because
2499 it is a copy of a linkonce section or due to
2500 linker script /DISCARD/, so we'll be discarding
2501 the relocs too. */
2502 }
2503 else if (p->count != 0)
2504 {
2505 srel = elf_section_data (p->sec)->sreloc;
2506 srel->size += p->count * TILEPRO_ELF_RELA_BYTES;
2507 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2508 info->flags |= DF_TEXTREL;
2509 }
2510 }
2511 }
2512
2513 local_got = elf_local_got_refcounts (ibfd);
2514 if (!local_got)
2515 continue;
2516
2517 symtab_hdr = &elf_symtab_hdr (ibfd);
2518 locsymcount = symtab_hdr->sh_info;
2519 end_local_got = local_got + locsymcount;
2520 local_tls_type = _bfd_tilepro_elf_local_got_tls_type (ibfd);
2521 s = htab->elf.sgot;
2522 srel = htab->elf.srelgot;
2523 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2524 {
2525 if (*local_got > 0)
2526 {
2527 *local_got = s->size;
2528 s->size += TILEPRO_BYTES_PER_WORD;
2529 if (*local_tls_type == GOT_TLS_GD)
2530 s->size += TILEPRO_BYTES_PER_WORD;
2531 if (bfd_link_pic (info)
2532 || *local_tls_type == GOT_TLS_GD
2533 || *local_tls_type == GOT_TLS_IE)
2534 srel->size += TILEPRO_ELF_RELA_BYTES;
2535 }
2536 else
2537 *local_got = (bfd_vma) -1;
2538 }
2539 }
2540
2541 /* Allocate global sym .plt and .got entries, and space for global
2542 sym dynamic relocs. */
2543 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2544
2545 if (elf_hash_table (info)->dynamic_sections_created)
2546 {
2547 /* If the .got section is more than 0x8000 bytes, we add
2548 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2549 bit relocations have a greater chance of working. */
2550 if (htab->elf.sgot->size >= 0x8000
2551 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2552 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2553 }
2554
2555 if (htab->elf.sgotplt)
2556 {
2557 struct elf_link_hash_entry *got;
2558 got = elf_link_hash_lookup (elf_hash_table (info),
2559 "_GLOBAL_OFFSET_TABLE_",
2560 FALSE, FALSE, FALSE);
2561
2562 /* Don't allocate .got.plt section if there are no GOT nor PLT
2563 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2564 if ((got == NULL
2565 || !got->ref_regular_nonweak)
2566 && (htab->elf.sgotplt->size
2567 == GOTPLT_HEADER_SIZE)
2568 && (htab->elf.splt == NULL
2569 || htab->elf.splt->size == 0)
2570 && (htab->elf.sgot == NULL
2571 || (htab->elf.sgot->size
2572 == get_elf_backend_data (output_bfd)->got_header_size)))
2573 htab->elf.sgotplt->size = 0;
2574 }
2575
2576 /* The check_relocs and adjust_dynamic_symbol entry points have
2577 determined the sizes of the various dynamic sections. Allocate
2578 memory for them. */
2579 for (s = dynobj->sections; s != NULL; s = s->next)
2580 {
2581 if ((s->flags & SEC_LINKER_CREATED) == 0)
2582 continue;
2583
2584 if (s == htab->elf.splt
2585 || s == htab->elf.sgot
2586 || s == htab->elf.sgotplt
2587 || s == htab->sdynbss)
2588 {
2589 /* Strip this section if we don't need it; see the
2590 comment below. */
2591 }
2592 else if (strncmp (s->name, ".rela", 5) == 0)
2593 {
2594 if (s->size != 0)
2595 {
2596 /* We use the reloc_count field as a counter if we need
2597 to copy relocs into the output file. */
2598 s->reloc_count = 0;
2599 }
2600 }
2601 else
2602 {
2603 /* It's not one of our sections. */
2604 continue;
2605 }
2606
2607 if (s->size == 0)
2608 {
2609 /* If we don't need this section, strip it from the
2610 output file. This is mostly to handle .rela.bss and
2611 .rela.plt. We must create both sections in
2612 create_dynamic_sections, because they must be created
2613 before the linker maps input sections to output
2614 sections. The linker does that before
2615 adjust_dynamic_symbol is called, and it is that
2616 function which decides whether anything needs to go
2617 into these sections. */
2618 s->flags |= SEC_EXCLUDE;
2619 continue;
2620 }
2621
2622 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2623 continue;
2624
2625 /* Allocate memory for the section contents. Zero the memory
2626 for the benefit of .rela.plt, which has 4 unused entries
2627 at the beginning, and we don't want garbage. */
2628 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2629 if (s->contents == NULL)
2630 return FALSE;
2631 }
2632
2633 if (elf_hash_table (info)->dynamic_sections_created)
2634 {
2635 /* Add some entries to the .dynamic section. We fill in the
2636 values later, in tilepro_elf_finish_dynamic_sections, but we
2637 must add the entries now so that we get the correct size for
2638 the .dynamic section. The DT_DEBUG entry is filled in by the
2639 dynamic linker and used by the debugger. */
2640 #define add_dynamic_entry(TAG, VAL) \
2641 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2642
2643 if (bfd_link_executable (info))
2644 {
2645 if (!add_dynamic_entry (DT_DEBUG, 0))
2646 return FALSE;
2647 }
2648
2649 if (htab->elf.srelplt->size != 0)
2650 {
2651 if (!add_dynamic_entry (DT_PLTGOT, 0)
2652 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2653 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2654 || !add_dynamic_entry (DT_JMPREL, 0))
2655 return FALSE;
2656 }
2657
2658 if (!add_dynamic_entry (DT_RELA, 0)
2659 || !add_dynamic_entry (DT_RELASZ, 0)
2660 || !add_dynamic_entry (DT_RELAENT, TILEPRO_ELF_RELA_BYTES))
2661 return FALSE;
2662
2663 /* If any dynamic relocs apply to a read-only section,
2664 then we need a DT_TEXTREL entry. */
2665 if ((info->flags & DF_TEXTREL) == 0)
2666 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2667
2668 if (info->flags & DF_TEXTREL)
2669 {
2670 if (!add_dynamic_entry (DT_TEXTREL, 0))
2671 return FALSE;
2672 }
2673 }
2674 #undef add_dynamic_entry
2675
2676 return TRUE;
2677 }
2678
2679 /* Return the base VMA address which should be subtracted from real addresses
2680 when resolving @dtpoff relocation.
2681 This is PT_TLS segment p_vaddr. */
2682
2683 static bfd_vma
dtpoff_base(struct bfd_link_info * info)2684 dtpoff_base (struct bfd_link_info *info)
2685 {
2686 /* If tls_sec is NULL, we should have signalled an error already. */
2687 if (elf_hash_table (info)->tls_sec == NULL)
2688 return 0;
2689 return elf_hash_table (info)->tls_sec->vma;
2690 }
2691
2692 /* Return the relocation value for R_TILEPRO_TLS_TPOFF32. */
2693
2694 static bfd_vma
tpoff(struct bfd_link_info * info,bfd_vma address)2695 tpoff (struct bfd_link_info *info, bfd_vma address)
2696 {
2697 struct elf_link_hash_table *htab = elf_hash_table (info);
2698
2699 /* If tls_sec is NULL, we should have signalled an error already. */
2700 if (htab->tls_sec == NULL)
2701 return 0;
2702
2703 return (address - htab->tls_sec->vma);
2704 }
2705
2706 /* Replace the MASK bits in ADDR with those in INSN, for the next
2707 TILEPRO_BUNDLE_SIZE_IN_BYTES bytes. */
2708
2709 static void
tilepro_replace_insn(bfd_byte * addr,const bfd_byte * mask,const bfd_byte * insn)2710 tilepro_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2711 const bfd_byte *insn)
2712 {
2713 int i;
2714 for (i = 0; i < TILEPRO_BUNDLE_SIZE_IN_BYTES; i++)
2715 {
2716 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2717 }
2718 }
2719
2720 /* Mask to extract the bits corresponding to an instruction in a
2721 specific pipe of a bundle. */
2722 static const bfd_byte insn_mask_X1[] = {
2723 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x7f
2724 };
2725
2726 /* Mask to extract the bits corresponding to an instruction in a
2727 specific pipe of a bundle, minus the destination operand and the
2728 first source operand. */
2729 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2730 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2731 };
2732
2733 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2734 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x7f
2735 };
2736
2737 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2738 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2739 };
2740
2741 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2742 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x78
2743 };
2744
2745 /* Mask to extract the first source operand of an instruction. */
2746 static const bfd_byte srca_mask_X0[] = {
2747 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
2748 };
2749
2750 static const bfd_byte srca_mask_X1[] = {
2751 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00
2752 };
2753
2754 /* Various instructions synthesized to support tls references. */
2755
2756 /* move r0, r0 in the X1 pipe, used for tls le. */
2757 static const bfd_byte insn_tls_le_move_X1[] = {
2758 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x33, 0x08
2759 };
2760
2761 /* move r0, zero in the X0 and X1 pipe, used for tls le. */
2762 static const bfd_byte insn_tls_le_move_zero_X0X1[] = {
2763 0xc0, 0xff, 0xcf, 0x00, 0xe0, 0xff, 0x33, 0x08
2764 };
2765
2766 /* lw r0, r0 in the X1 pipe, used for tls ie. */
2767 static const bfd_byte insn_tls_ie_lw_X1[] = {
2768 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x0b, 0x40
2769 };
2770
2771 /* add r0, r0, tp in various pipes, used for tls ie. */
2772 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2773 0x00, 0x50, 0x0f, 0x00, 0x00, 0xa8, 0x07, 0x08
2774 };
2775 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2776 0x00, 0x50, 0x03, 0x08, 0x00, 0xa8, 0x01, 0x8c
2777 };
2778
2779 /* move r0, r0 in various pipes, used for tls gd. */
2780 static const bfd_byte insn_tls_gd_add_X0X1[] = {
2781 0x00, 0xf0, 0xcf, 0x00, 0x00, 0xf8, 0x33, 0x08
2782 };
2783 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
2784 0x00, 0xf0, 0x0b, 0x18, 0x00, 0xf8, 0x05, 0x9c
2785 };
2786
2787 /* Relocate an TILEPRO ELF section.
2788
2789 The RELOCATE_SECTION function is called by the new ELF backend linker
2790 to handle the relocations for a section.
2791
2792 The relocs are always passed as Rela structures.
2793
2794 This function is responsible for adjusting the section contents as
2795 necessary, and (if generating a relocatable output file) adjusting
2796 the reloc addend as necessary.
2797
2798 This function does not have to worry about setting the reloc
2799 address or the reloc symbol index.
2800
2801 LOCAL_SYMS is a pointer to the swapped in local symbols.
2802
2803 LOCAL_SECTIONS is an array giving the section in the input file
2804 corresponding to the st_shndx field of each local symbol.
2805
2806 The global hash table entry for the global symbols can be found
2807 via elf_sym_hashes (input_bfd).
2808
2809 When generating relocatable output, this function must handle
2810 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2811 going to be the section symbol corresponding to the output
2812 section, which means that the addend must be adjusted
2813 accordingly. */
2814
2815 static bfd_boolean
tilepro_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)2816 tilepro_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
2817 bfd *input_bfd, asection *input_section,
2818 bfd_byte *contents, Elf_Internal_Rela *relocs,
2819 Elf_Internal_Sym *local_syms,
2820 asection **local_sections)
2821 {
2822 struct tilepro_elf_link_hash_table *htab;
2823 Elf_Internal_Shdr *symtab_hdr;
2824 struct elf_link_hash_entry **sym_hashes;
2825 bfd_vma *local_got_offsets;
2826 bfd_vma got_base;
2827 asection *sreloc;
2828 Elf_Internal_Rela *rel;
2829 Elf_Internal_Rela *relend;
2830 int num_relocs;
2831
2832 htab = tilepro_elf_hash_table (info);
2833 BFD_ASSERT (htab != NULL);
2834 symtab_hdr = &elf_symtab_hdr (input_bfd);
2835 sym_hashes = elf_sym_hashes (input_bfd);
2836 local_got_offsets = elf_local_got_offsets (input_bfd);
2837
2838 if (elf_hash_table (info)->hgot == NULL)
2839 got_base = 0;
2840 else
2841 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2842
2843 sreloc = elf_section_data (input_section)->sreloc;
2844
2845 rel = relocs;
2846 num_relocs = input_section->reloc_count;
2847 relend = relocs + num_relocs;
2848 for (; rel < relend; rel++)
2849 {
2850 int r_type, tls_type;
2851 bfd_boolean is_tls_iele, is_tls_le;
2852 reloc_howto_type *howto;
2853 unsigned long r_symndx;
2854 struct elf_link_hash_entry *h;
2855 Elf_Internal_Sym *sym;
2856 tilepro_create_func create_func;
2857 asection *sec;
2858 bfd_vma relocation;
2859 bfd_reloc_status_type r;
2860 const char *name;
2861 bfd_vma off;
2862 bfd_boolean is_plt = FALSE;
2863
2864 bfd_boolean unresolved_reloc;
2865
2866 r_type = ELF32_R_TYPE (rel->r_info);
2867 if (r_type == R_TILEPRO_GNU_VTINHERIT
2868 || r_type == R_TILEPRO_GNU_VTENTRY)
2869 continue;
2870
2871 if ((unsigned int)r_type >= NELEMS(tilepro_elf_howto_table))
2872 {
2873 /* Not clear if we need to check here, but just be paranoid. */
2874 (*_bfd_error_handler)
2875 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2876 input_bfd, r_type, input_section);
2877 bfd_set_error (bfd_error_bad_value);
2878 return FALSE;
2879 }
2880
2881 howto = tilepro_elf_howto_table + r_type;
2882
2883 /* This is a final link. */
2884 r_symndx = ELF32_R_SYM (rel->r_info);
2885 h = NULL;
2886 sym = NULL;
2887 sec = NULL;
2888 unresolved_reloc = FALSE;
2889 if (r_symndx < symtab_hdr->sh_info)
2890 {
2891 sym = local_syms + r_symndx;
2892 sec = local_sections[r_symndx];
2893 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2894 }
2895 else
2896 {
2897 bfd_boolean warned ATTRIBUTE_UNUSED;
2898 bfd_boolean ignored ATTRIBUTE_UNUSED;
2899
2900 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2901 r_symndx, symtab_hdr, sym_hashes,
2902 h, sec, relocation,
2903 unresolved_reloc, warned, ignored);
2904 if (warned)
2905 {
2906 /* To avoid generating warning messages about truncated
2907 relocations, set the relocation's address to be the same as
2908 the start of this section. */
2909 if (input_section->output_section != NULL)
2910 relocation = input_section->output_section->vma;
2911 else
2912 relocation = 0;
2913 }
2914 }
2915
2916 if (sec != NULL && discarded_section (sec))
2917 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2918 rel, 1, relend, howto, 0, contents);
2919
2920 if (bfd_link_relocatable (info))
2921 continue;
2922
2923 if (h != NULL)
2924 name = h->root.root.string;
2925 else
2926 {
2927 name = (bfd_elf_string_from_elf_section
2928 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2929 if (name == NULL || *name == '\0')
2930 name = bfd_section_name (input_bfd, sec);
2931 }
2932
2933 switch (r_type)
2934 {
2935 case R_TILEPRO_TLS_GD_CALL:
2936 case R_TILEPRO_IMM8_X0_TLS_GD_ADD:
2937 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD:
2938 case R_TILEPRO_IMM8_X1_TLS_GD_ADD:
2939 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD:
2940 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
2941 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
2942 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
2943 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
2944 tls_type = GOT_UNKNOWN;
2945 if (h == NULL && local_got_offsets)
2946 tls_type =
2947 _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx];
2948 else if (h != NULL)
2949 tls_type = tilepro_elf_hash_entry(h)->tls_type;
2950
2951 is_tls_iele = (! bfd_link_pic (info) || tls_type == GOT_TLS_IE);
2952 is_tls_le = is_tls_iele && (!bfd_link_pic (info)
2953 && (h == NULL || h->dynindx == -1));
2954
2955 if (r_type == R_TILEPRO_TLS_GD_CALL)
2956 {
2957 if (is_tls_le)
2958 {
2959 /* GD -> LE */
2960 tilepro_replace_insn (contents + rel->r_offset,
2961 insn_mask_X1, insn_tls_le_move_X1);
2962 continue;
2963 }
2964 else if (is_tls_iele)
2965 {
2966 /* GD -> IE */
2967 tilepro_replace_insn (contents + rel->r_offset,
2968 insn_mask_X1, insn_tls_ie_lw_X1);
2969 continue;
2970 }
2971
2972 /* GD -> GD */
2973 h = (struct elf_link_hash_entry *)
2974 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
2975 FALSE, TRUE);
2976 BFD_ASSERT (h != NULL);
2977 r_type = R_TILEPRO_JOFFLONG_X1_PLT;
2978 howto = tilepro_elf_howto_table + r_type;
2979 }
2980 else if (r_type == R_TILEPRO_IMM16_X0_TLS_GD_HA
2981 || r_type == R_TILEPRO_IMM16_X0_TLS_IE_HA)
2982 {
2983 if (is_tls_le)
2984 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X0,
2985 insn_tls_le_move_zero_X0X1);
2986 }
2987 else if (r_type == R_TILEPRO_IMM16_X1_TLS_GD_HA
2988 || r_type == R_TILEPRO_IMM16_X1_TLS_IE_HA)
2989 {
2990 if (is_tls_le)
2991 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X1,
2992 insn_tls_le_move_zero_X0X1);
2993 }
2994 else
2995 {
2996 const bfd_byte *mask = NULL;
2997 const bfd_byte *add_insn = NULL;
2998
2999 switch (r_type)
3000 {
3001 case R_TILEPRO_IMM8_X0_TLS_GD_ADD:
3002 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1
3003 : insn_tls_gd_add_X0X1;
3004 mask = insn_mask_X0_no_dest_no_srca;
3005 break;
3006 case R_TILEPRO_IMM8_X1_TLS_GD_ADD:
3007 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1
3008 : insn_tls_gd_add_X0X1;
3009 mask = insn_mask_X1_no_dest_no_srca;
3010 break;
3011 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD:
3012 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1
3013 : insn_tls_gd_add_Y0Y1;
3014 mask = insn_mask_Y0_no_dest_no_srca;
3015 break;
3016 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD:
3017 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1
3018 : insn_tls_gd_add_Y0Y1;
3019 mask = insn_mask_Y1_no_dest_no_srca;
3020 break;
3021 }
3022
3023 tilepro_replace_insn (contents + rel->r_offset, mask, add_insn);
3024
3025 continue;
3026 }
3027 break;
3028 case R_TILEPRO_TLS_IE_LOAD:
3029 if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
3030 /* IE -> LE */
3031 tilepro_replace_insn (contents + rel->r_offset,
3032 insn_mask_X1_no_dest_no_srca,
3033 insn_tls_le_move_X1);
3034 else
3035 /* IE -> IE */
3036 tilepro_replace_insn (contents + rel->r_offset,
3037 insn_mask_X1_no_dest_no_srca,
3038 insn_tls_ie_lw_X1);
3039 continue;
3040 break;
3041 default:
3042 break;
3043 }
3044
3045 switch (r_type)
3046 {
3047 case R_TILEPRO_IMM16_X0_GOT:
3048 case R_TILEPRO_IMM16_X1_GOT:
3049 case R_TILEPRO_IMM16_X0_GOT_LO:
3050 case R_TILEPRO_IMM16_X1_GOT_LO:
3051 case R_TILEPRO_IMM16_X0_GOT_HI:
3052 case R_TILEPRO_IMM16_X1_GOT_HI:
3053 case R_TILEPRO_IMM16_X0_GOT_HA:
3054 case R_TILEPRO_IMM16_X1_GOT_HA:
3055 /* Relocation is to the entry for this symbol in the global
3056 offset table. */
3057 if (htab->elf.sgot == NULL)
3058 abort ();
3059
3060 if (h != NULL)
3061 {
3062 bfd_boolean dyn;
3063
3064 off = h->got.offset;
3065 BFD_ASSERT (off != (bfd_vma) -1);
3066 dyn = elf_hash_table (info)->dynamic_sections_created;
3067
3068 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3069 bfd_link_pic (info),
3070 h)
3071 || (bfd_link_pic (info)
3072 && SYMBOL_REFERENCES_LOCAL (info, h)))
3073 {
3074 /* This is actually a static link, or it is a
3075 -Bsymbolic link and the symbol is defined
3076 locally, or the symbol was forced to be local
3077 because of a version file. We must initialize
3078 this entry in the global offset table. Since the
3079 offset must always be a multiple
3080 of 4 for 32-bit, we use the least significant bit
3081 to record whether we have initialized it already.
3082
3083 When doing a dynamic link, we create a .rela.got
3084 relocation entry to initialize the value. This
3085 is done in the finish_dynamic_symbol routine. */
3086 if ((off & 1) != 0)
3087 off &= ~1;
3088 else
3089 {
3090 bfd_put_32 (output_bfd, relocation,
3091 htab->elf.sgot->contents + off);
3092 h->got.offset |= 1;
3093 }
3094 }
3095 else
3096 unresolved_reloc = FALSE;
3097 }
3098 else
3099 {
3100 BFD_ASSERT (local_got_offsets != NULL
3101 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3102
3103 off = local_got_offsets[r_symndx];
3104
3105 /* The offset must always be a multiple of 4 on 32-bit.
3106 We use the least significant bit to record
3107 whether we have already processed this entry. */
3108 if ((off & 1) != 0)
3109 off &= ~1;
3110 else
3111 {
3112 if (bfd_link_pic (info))
3113 {
3114 asection *s;
3115 Elf_Internal_Rela outrel;
3116
3117 /* We need to generate a R_TILEPRO_RELATIVE reloc
3118 for the dynamic linker. */
3119 s = htab->elf.srelgot;
3120 BFD_ASSERT (s != NULL);
3121
3122 outrel.r_offset = (htab->elf.sgot->output_section->vma
3123 + htab->elf.sgot->output_offset
3124 + off);
3125 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
3126 outrel.r_addend = relocation;
3127 relocation = 0;
3128 tilepro_elf_append_rela_32 (output_bfd, s, &outrel);
3129 }
3130
3131 bfd_put_32 (output_bfd, relocation,
3132 htab->elf.sgot->contents + off);
3133 local_got_offsets[r_symndx] |= 1;
3134 }
3135 }
3136 relocation = off - got_base;
3137 break;
3138
3139 case R_TILEPRO_JOFFLONG_X1_PLT:
3140 /* Relocation is to the entry for this symbol in the
3141 procedure linkage table. */
3142 BFD_ASSERT (h != NULL);
3143
3144 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3145 {
3146 /* We didn't make a PLT entry for this symbol. This
3147 happens when statically linking PIC code, or when
3148 using -Bsymbolic. */
3149 break;
3150 }
3151
3152 relocation = (htab->elf.splt->output_section->vma
3153 + htab->elf.splt->output_offset
3154 + h->plt.offset);
3155 unresolved_reloc = FALSE;
3156 break;
3157
3158 case R_TILEPRO_32_PCREL:
3159 case R_TILEPRO_16_PCREL:
3160 case R_TILEPRO_8_PCREL:
3161 case R_TILEPRO_IMM16_X0_PCREL:
3162 case R_TILEPRO_IMM16_X1_PCREL:
3163 case R_TILEPRO_IMM16_X0_LO_PCREL:
3164 case R_TILEPRO_IMM16_X1_LO_PCREL:
3165 case R_TILEPRO_IMM16_X0_HI_PCREL:
3166 case R_TILEPRO_IMM16_X1_HI_PCREL:
3167 case R_TILEPRO_IMM16_X0_HA_PCREL:
3168 case R_TILEPRO_IMM16_X1_HA_PCREL:
3169 if (h != NULL
3170 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3171 break;
3172 /* Fall through. */
3173 case R_TILEPRO_32:
3174 case R_TILEPRO_16:
3175 case R_TILEPRO_8:
3176 case R_TILEPRO_LO16:
3177 case R_TILEPRO_HI16:
3178 case R_TILEPRO_HA16:
3179 case R_TILEPRO_COPY:
3180 case R_TILEPRO_GLOB_DAT:
3181 case R_TILEPRO_JMP_SLOT:
3182 case R_TILEPRO_RELATIVE:
3183 case R_TILEPRO_BROFF_X1:
3184 case R_TILEPRO_JOFFLONG_X1:
3185 case R_TILEPRO_IMM8_X0:
3186 case R_TILEPRO_IMM8_Y0:
3187 case R_TILEPRO_IMM8_X1:
3188 case R_TILEPRO_IMM8_Y1:
3189 case R_TILEPRO_DEST_IMM8_X1:
3190 case R_TILEPRO_MT_IMM15_X1:
3191 case R_TILEPRO_MF_IMM15_X1:
3192 case R_TILEPRO_IMM16_X0:
3193 case R_TILEPRO_IMM16_X1:
3194 case R_TILEPRO_IMM16_X0_LO:
3195 case R_TILEPRO_IMM16_X1_LO:
3196 case R_TILEPRO_IMM16_X0_HI:
3197 case R_TILEPRO_IMM16_X1_HI:
3198 case R_TILEPRO_IMM16_X0_HA:
3199 case R_TILEPRO_IMM16_X1_HA:
3200 case R_TILEPRO_MMSTART_X0:
3201 case R_TILEPRO_MMEND_X0:
3202 case R_TILEPRO_MMSTART_X1:
3203 case R_TILEPRO_MMEND_X1:
3204 case R_TILEPRO_SHAMT_X0:
3205 case R_TILEPRO_SHAMT_X1:
3206 case R_TILEPRO_SHAMT_Y0:
3207 case R_TILEPRO_SHAMT_Y1:
3208 if ((input_section->flags & SEC_ALLOC) == 0)
3209 break;
3210
3211 if ((bfd_link_pic (info)
3212 && (h == NULL
3213 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3214 || h->root.type != bfd_link_hash_undefweak)
3215 && (! howto->pc_relative
3216 || !SYMBOL_CALLS_LOCAL (info, h)))
3217 || (!bfd_link_pic (info)
3218 && h != NULL
3219 && h->dynindx != -1
3220 && !h->non_got_ref
3221 && ((h->def_dynamic
3222 && !h->def_regular)
3223 || h->root.type == bfd_link_hash_undefweak
3224 || h->root.type == bfd_link_hash_undefined)))
3225 {
3226 Elf_Internal_Rela outrel;
3227 bfd_boolean skip, relocate = FALSE;
3228
3229 /* When generating a shared object, these relocations
3230 are copied into the output file to be resolved at run
3231 time. */
3232
3233 BFD_ASSERT (sreloc != NULL);
3234
3235 skip = FALSE;
3236
3237 outrel.r_offset =
3238 _bfd_elf_section_offset (output_bfd, info, input_section,
3239 rel->r_offset);
3240 if (outrel.r_offset == (bfd_vma) -1)
3241 skip = TRUE;
3242 else if (outrel.r_offset == (bfd_vma) -2)
3243 skip = TRUE, relocate = TRUE;
3244 outrel.r_offset += (input_section->output_section->vma
3245 + input_section->output_offset);
3246
3247 switch (r_type)
3248 {
3249 case R_TILEPRO_32_PCREL:
3250 case R_TILEPRO_16_PCREL:
3251 case R_TILEPRO_8_PCREL:
3252 /* If the symbol is not dynamic, we should not keep
3253 a dynamic relocation. But an .rela.* slot has been
3254 allocated for it, output R_TILEPRO_NONE.
3255 FIXME: Add code tracking needed dynamic relocs as
3256 e.g. i386 has. */
3257 if (h->dynindx == -1)
3258 skip = TRUE, relocate = TRUE;
3259 break;
3260 }
3261
3262 if (skip)
3263 memset (&outrel, 0, sizeof outrel);
3264 /* h->dynindx may be -1 if the symbol was marked to
3265 become local. */
3266 else if (h != NULL &&
3267 h->dynindx != -1
3268 && (! is_plt
3269 || !bfd_link_pic (info)
3270 || !SYMBOLIC_BIND (info, h)
3271 || !h->def_regular))
3272 {
3273 BFD_ASSERT (h->dynindx != -1);
3274 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3275 outrel.r_addend = rel->r_addend;
3276 }
3277 else
3278 {
3279 if (r_type == R_TILEPRO_32)
3280 {
3281 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
3282 outrel.r_addend = relocation + rel->r_addend;
3283 }
3284 else
3285 {
3286 long indx;
3287
3288 outrel.r_addend = relocation + rel->r_addend;
3289
3290 if (is_plt)
3291 sec = htab->elf.splt;
3292
3293 if (bfd_is_abs_section (sec))
3294 indx = 0;
3295 else if (sec == NULL || sec->owner == NULL)
3296 {
3297 bfd_set_error (bfd_error_bad_value);
3298 return FALSE;
3299 }
3300 else
3301 {
3302 asection *osec;
3303
3304 /* We are turning this relocation into one
3305 against a section symbol. It would be
3306 proper to subtract the symbol's value,
3307 osec->vma, from the emitted reloc addend,
3308 but ld.so expects buggy relocs. */
3309 osec = sec->output_section;
3310 indx = elf_section_data (osec)->dynindx;
3311
3312 if (indx == 0)
3313 {
3314 osec = htab->elf.text_index_section;
3315 indx = elf_section_data (osec)->dynindx;
3316 }
3317
3318 /* FIXME: we really should be able to link non-pic
3319 shared libraries. */
3320 if (indx == 0)
3321 {
3322 BFD_FAIL ();
3323 (*_bfd_error_handler)
3324 (_("%B: probably compiled without -fPIC?"),
3325 input_bfd);
3326 bfd_set_error (bfd_error_bad_value);
3327 return FALSE;
3328 }
3329 }
3330
3331 outrel.r_info = ELF32_R_INFO (indx, r_type);
3332 }
3333 }
3334
3335 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel);
3336
3337 /* This reloc will be computed at runtime, so there's no
3338 need to do anything now. */
3339 if (! relocate)
3340 continue;
3341 }
3342 break;
3343
3344 case R_TILEPRO_IMM16_X0_TLS_LE:
3345 case R_TILEPRO_IMM16_X1_TLS_LE:
3346 case R_TILEPRO_IMM16_X0_TLS_LE_LO:
3347 case R_TILEPRO_IMM16_X1_TLS_LE_LO:
3348 case R_TILEPRO_IMM16_X0_TLS_LE_HI:
3349 case R_TILEPRO_IMM16_X1_TLS_LE_HI:
3350 case R_TILEPRO_IMM16_X0_TLS_LE_HA:
3351 case R_TILEPRO_IMM16_X1_TLS_LE_HA:
3352 if (bfd_link_pic (info))
3353 {
3354 Elf_Internal_Rela outrel;
3355 bfd_boolean skip;
3356
3357 BFD_ASSERT (sreloc != NULL);
3358 skip = FALSE;
3359 outrel.r_offset =
3360 _bfd_elf_section_offset (output_bfd, info, input_section,
3361 rel->r_offset);
3362 if (outrel.r_offset == (bfd_vma) -1)
3363 skip = TRUE;
3364 else if (outrel.r_offset == (bfd_vma) -2)
3365 skip = TRUE;
3366 outrel.r_offset += (input_section->output_section->vma
3367 + input_section->output_offset);
3368 if (skip)
3369 memset (&outrel, 0, sizeof outrel);
3370 else
3371 {
3372 outrel.r_info = ELF32_R_INFO (0, r_type);
3373 outrel.r_addend = relocation - dtpoff_base (info)
3374 + rel->r_addend;
3375 }
3376
3377 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel);
3378 continue;
3379 }
3380 relocation = tpoff (info, relocation);
3381 break;
3382
3383 case R_TILEPRO_IMM16_X0_TLS_GD:
3384 case R_TILEPRO_IMM16_X1_TLS_GD:
3385 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
3386 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
3387 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
3388 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
3389 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3390 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3391 case R_TILEPRO_IMM16_X0_TLS_IE:
3392 case R_TILEPRO_IMM16_X1_TLS_IE:
3393 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
3394 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
3395 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
3396 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
3397 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3398 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3399 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL);
3400 tls_type = GOT_UNKNOWN;
3401 if (h == NULL && local_got_offsets)
3402 tls_type
3403 = _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx];
3404 else if (h != NULL)
3405 {
3406 tls_type = tilepro_elf_hash_entry(h)->tls_type;
3407 if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type == GOT_TLS_IE)
3408 r_type = tilepro_tls_translate_to_le (r_type);
3409 }
3410 if (tls_type == GOT_TLS_IE)
3411 r_type = tilepro_tls_translate_to_ie (r_type);
3412
3413 if (r_type == R_TILEPRO_IMM16_X0_TLS_LE
3414 || r_type == R_TILEPRO_IMM16_X1_TLS_LE
3415 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_LO
3416 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_LO
3417 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HI
3418 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HI
3419 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HA
3420 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HA)
3421 {
3422 relocation = tpoff (info, relocation);
3423 break;
3424 }
3425
3426 if (h != NULL)
3427 {
3428 off = h->got.offset;
3429 h->got.offset |= 1;
3430 }
3431 else
3432 {
3433 BFD_ASSERT (local_got_offsets != NULL);
3434 off = local_got_offsets[r_symndx];
3435 local_got_offsets[r_symndx] |= 1;
3436 }
3437
3438 if (htab->elf.sgot == NULL)
3439 abort ();
3440
3441 if ((off & 1) != 0)
3442 off &= ~1;
3443 else
3444 {
3445 Elf_Internal_Rela outrel;
3446 int indx = 0;
3447 bfd_boolean need_relocs = FALSE;
3448
3449 if (htab->elf.srelgot == NULL)
3450 abort ();
3451
3452 if (h != NULL)
3453 {
3454 bfd_boolean dyn;
3455 dyn = htab->elf.dynamic_sections_created;
3456
3457 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3458 bfd_link_pic (info),
3459 h)
3460 && (!bfd_link_pic (info)
3461 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3462 {
3463 indx = h->dynindx;
3464 }
3465 }
3466
3467 /* The GOT entries have not been initialized yet. Do it
3468 now, and emit any relocations. */
3469 if ((bfd_link_pic (info) || indx != 0)
3470 && (h == NULL
3471 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3472 || h->root.type != bfd_link_hash_undefweak))
3473 need_relocs = TRUE;
3474
3475 switch (r_type)
3476 {
3477 case R_TILEPRO_IMM16_X0_TLS_IE:
3478 case R_TILEPRO_IMM16_X1_TLS_IE:
3479 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
3480 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
3481 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
3482 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
3483 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3484 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3485 if (need_relocs) {
3486 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off);
3487 outrel.r_offset = (htab->elf.sgot->output_section->vma
3488 + htab->elf.sgot->output_offset + off);
3489 outrel.r_addend = 0;
3490 if (indx == 0)
3491 outrel.r_addend = relocation - dtpoff_base (info);
3492 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_TPOFF32);
3493 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot,
3494 &outrel);
3495 } else {
3496 bfd_put_32 (output_bfd, tpoff (info, relocation),
3497 htab->elf.sgot->contents + off);
3498 }
3499 break;
3500
3501 case R_TILEPRO_IMM16_X0_TLS_GD:
3502 case R_TILEPRO_IMM16_X1_TLS_GD:
3503 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
3504 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
3505 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
3506 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
3507 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3508 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3509 if (need_relocs) {
3510 outrel.r_offset = (htab->elf.sgot->output_section->vma
3511 + htab->elf.sgot->output_offset + off);
3512 outrel.r_addend = 0;
3513 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_DTPMOD32);
3514 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off);
3515 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot,
3516 &outrel);
3517 if (indx == 0)
3518 {
3519 BFD_ASSERT (! unresolved_reloc);
3520 bfd_put_32 (output_bfd,
3521 relocation - dtpoff_base (info),
3522 (htab->elf.sgot->contents + off +
3523 TILEPRO_BYTES_PER_WORD));
3524 }
3525 else
3526 {
3527 bfd_put_32 (output_bfd, 0,
3528 (htab->elf.sgot->contents + off +
3529 TILEPRO_BYTES_PER_WORD));
3530 outrel.r_info = ELF32_R_INFO (indx,
3531 R_TILEPRO_TLS_DTPOFF32);
3532 outrel.r_offset += TILEPRO_BYTES_PER_WORD;
3533 tilepro_elf_append_rela_32 (output_bfd,
3534 htab->elf.srelgot, &outrel);
3535 }
3536 }
3537
3538 else {
3539 /* If we are not emitting relocations for a
3540 general dynamic reference, then we must be in a
3541 static link or an executable link with the
3542 symbol binding locally. Mark it as belonging
3543 to module 1, the executable. */
3544 bfd_put_32 (output_bfd, 1,
3545 htab->elf.sgot->contents + off );
3546 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3547 htab->elf.sgot->contents + off +
3548 TILEPRO_BYTES_PER_WORD);
3549 }
3550 break;
3551 }
3552 }
3553
3554 if (off >= (bfd_vma) -2)
3555 abort ();
3556
3557 relocation = off - got_base;
3558 unresolved_reloc = FALSE;
3559 howto = tilepro_elf_howto_table + r_type;
3560 break;
3561
3562 default:
3563 break;
3564 }
3565
3566 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3567 because such sections are not SEC_ALLOC and thus ld.so will
3568 not process them. */
3569 if (unresolved_reloc
3570 && !((input_section->flags & SEC_DEBUGGING) != 0
3571 && h->def_dynamic)
3572 && _bfd_elf_section_offset (output_bfd, info, input_section,
3573 rel->r_offset) != (bfd_vma) -1)
3574 (*_bfd_error_handler)
3575 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3576 input_bfd,
3577 input_section,
3578 (long) rel->r_offset,
3579 howto->name,
3580 h->root.root.string);
3581
3582 r = bfd_reloc_continue;
3583
3584 /* For the _HA types, we add 0x8000 so that if bit 15 is set,
3585 * we will increment bit 16. The howto->rightshift takes care
3586 * of the rest for us. */
3587 switch (r_type)
3588 {
3589 case R_TILEPRO_HA16:
3590 case R_TILEPRO_IMM16_X0_HA:
3591 case R_TILEPRO_IMM16_X1_HA:
3592 case R_TILEPRO_IMM16_X0_HA_PCREL:
3593 case R_TILEPRO_IMM16_X1_HA_PCREL:
3594 case R_TILEPRO_IMM16_X0_GOT_HA:
3595 case R_TILEPRO_IMM16_X1_GOT_HA:
3596 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3597 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3598 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3599 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3600 relocation += 0x8000;
3601 break;
3602 }
3603
3604 /* Get the operand creation function, if any. */
3605 create_func = reloc_to_create_func[r_type];
3606 if (create_func == NULL)
3607 {
3608 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3609 contents, rel->r_offset,
3610 relocation, rel->r_addend);
3611 }
3612 else
3613 {
3614 if (howto->pc_relative)
3615 {
3616 relocation -=
3617 input_section->output_section->vma + input_section->output_offset;
3618 if (howto->pcrel_offset)
3619 relocation -= rel->r_offset;
3620 }
3621
3622 bfd_byte *data;
3623
3624 /* Add the relocation addend if any to the final target value */
3625 relocation += rel->r_addend;
3626
3627 /* Do basic range checking */
3628 r = bfd_check_overflow (howto->complain_on_overflow,
3629 howto->bitsize,
3630 howto->rightshift,
3631 32,
3632 relocation);
3633
3634 /*
3635 * Write the relocated value out into the raw section data.
3636 * Don't put a relocation out in the .rela section.
3637 */
3638 tilepro_bundle_bits mask = create_func(-1);
3639 tilepro_bundle_bits value = create_func(relocation >> howto->rightshift);
3640
3641 /* Only touch bytes while the mask is not 0, so we
3642 don't write to out of bounds memory if this is actually
3643 a 16-bit switch instruction. */
3644 for (data = contents + rel->r_offset; mask != 0; data++)
3645 {
3646 bfd_byte byte_mask = (bfd_byte)mask;
3647 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3648 mask >>= 8;
3649 value >>= 8;
3650 }
3651 }
3652
3653 if (r != bfd_reloc_ok)
3654 {
3655 const char *msg = NULL;
3656
3657 switch (r)
3658 {
3659 case bfd_reloc_overflow:
3660 (*info->callbacks->reloc_overflow)
3661 (info, (h ? &h->root : NULL), name, howto->name,
3662 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3663 break;
3664
3665 case bfd_reloc_undefined:
3666 (*info->callbacks->undefined_symbol)
3667 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
3668 break;
3669
3670 case bfd_reloc_outofrange:
3671 msg = _("internal error: out of range error");
3672 break;
3673
3674 case bfd_reloc_notsupported:
3675 msg = _("internal error: unsupported relocation error");
3676 break;
3677
3678 case bfd_reloc_dangerous:
3679 msg = _("internal error: dangerous relocation");
3680 break;
3681
3682 default:
3683 msg = _("internal error: unknown error");
3684 break;
3685 }
3686
3687 if (msg)
3688 (*info->callbacks->warning) (info, msg, name, input_bfd,
3689 input_section, rel->r_offset);
3690 }
3691 }
3692
3693 return TRUE;
3694 }
3695
3696 /* Finish up dynamic symbol handling. We set the contents of various
3697 dynamic sections here. */
3698
3699 static bfd_boolean
tilepro_elf_finish_dynamic_symbol(bfd * output_bfd,struct bfd_link_info * info,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)3700 tilepro_elf_finish_dynamic_symbol (bfd *output_bfd,
3701 struct bfd_link_info *info,
3702 struct elf_link_hash_entry *h,
3703 Elf_Internal_Sym *sym)
3704 {
3705 struct tilepro_elf_link_hash_table *htab;
3706
3707 htab = tilepro_elf_hash_table (info);
3708 BFD_ASSERT (htab != NULL);
3709
3710 if (h->plt.offset != (bfd_vma) -1)
3711 {
3712 asection *splt;
3713 asection *srela;
3714 asection *sgotplt;
3715 Elf_Internal_Rela rela;
3716 bfd_byte *loc;
3717 bfd_vma r_offset;
3718
3719 int rela_index;
3720
3721 /* This symbol has an entry in the PLT. Set it up. */
3722
3723 BFD_ASSERT (h->dynindx != -1);
3724
3725 splt = htab->elf.splt;
3726 srela = htab->elf.srelplt;
3727 sgotplt = htab->elf.sgotplt;
3728
3729 if (splt == NULL || srela == NULL)
3730 abort ();
3731
3732 /* Fill in the entry in the procedure linkage table. */
3733 rela_index = tilepro_plt_entry_build (splt, sgotplt, h->plt.offset,
3734 &r_offset);
3735
3736 /* Fill in the entry in the global offset table, which initially points
3737 to the beginning of the plt. */
3738 bfd_put_32 (output_bfd, splt->output_section->vma + splt->output_offset,
3739 sgotplt->contents + r_offset);
3740
3741 /* Fill in the entry in the .rela.plt section. */
3742 rela.r_offset = (sgotplt->output_section->vma
3743 + sgotplt->output_offset
3744 + r_offset);
3745 rela.r_addend = 0;
3746 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_JMP_SLOT);
3747
3748 loc = srela->contents + rela_index * sizeof (Elf32_External_Rela);
3749 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3750
3751 if (!h->def_regular)
3752 {
3753 /* Mark the symbol as undefined, rather than as defined in
3754 the .plt section. Leave the value alone. */
3755 sym->st_shndx = SHN_UNDEF;
3756 /* If the symbol is weak, we do need to clear the value.
3757 Otherwise, the PLT entry would provide a definition for
3758 the symbol even if the symbol wasn't defined anywhere,
3759 and so the symbol would never be NULL. */
3760 if (!h->ref_regular_nonweak)
3761 sym->st_value = 0;
3762 }
3763 }
3764
3765 if (h->got.offset != (bfd_vma) -1
3766 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3767 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3768 {
3769 asection *sgot;
3770 asection *srela;
3771 Elf_Internal_Rela rela;
3772
3773 /* This symbol has an entry in the GOT. Set it up. */
3774
3775 sgot = htab->elf.sgot;
3776 srela = htab->elf.srelgot;
3777 BFD_ASSERT (sgot != NULL && srela != NULL);
3778
3779 rela.r_offset = (sgot->output_section->vma
3780 + sgot->output_offset
3781 + (h->got.offset &~ (bfd_vma) 1));
3782
3783 /* If this is a -Bsymbolic link, and the symbol is defined
3784 locally, we just want to emit a RELATIVE reloc. Likewise if
3785 the symbol was forced to be local because of a version file.
3786 The entry in the global offset table will already have been
3787 initialized in the relocate_section function. */
3788 if (bfd_link_pic (info)
3789 && (info->symbolic || h->dynindx == -1)
3790 && h->def_regular)
3791 {
3792 asection *sec = h->root.u.def.section;
3793 rela.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
3794 rela.r_addend = (h->root.u.def.value
3795 + sec->output_section->vma
3796 + sec->output_offset);
3797 }
3798 else
3799 {
3800 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_GLOB_DAT);
3801 rela.r_addend = 0;
3802 }
3803
3804 bfd_put_32 (output_bfd, 0,
3805 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
3806 tilepro_elf_append_rela_32 (output_bfd, srela, &rela);
3807 }
3808
3809 if (h->needs_copy)
3810 {
3811 asection *s;
3812 Elf_Internal_Rela rela;
3813
3814 /* This symbols needs a copy reloc. Set it up. */
3815 BFD_ASSERT (h->dynindx != -1);
3816
3817 s = htab->srelbss;
3818 BFD_ASSERT (s != NULL);
3819
3820 rela.r_offset = (h->root.u.def.value
3821 + h->root.u.def.section->output_section->vma
3822 + h->root.u.def.section->output_offset);
3823 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_COPY);
3824 rela.r_addend = 0;
3825 tilepro_elf_append_rela_32 (output_bfd, s, &rela);
3826 }
3827
3828 /* Mark some specially defined symbols as absolute. */
3829 if (h == htab->elf.hdynamic
3830 || (h == htab->elf.hgot || h == htab->elf.hplt))
3831 sym->st_shndx = SHN_ABS;
3832
3833 return TRUE;
3834 }
3835
3836 /* Finish up the dynamic sections. */
3837
3838 static bfd_boolean
tilepro_finish_dyn(bfd * output_bfd,struct bfd_link_info * info,bfd * dynobj,asection * sdyn,asection * splt ATTRIBUTE_UNUSED)3839 tilepro_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
3840 bfd *dynobj, asection *sdyn,
3841 asection *splt ATTRIBUTE_UNUSED)
3842 {
3843 Elf32_External_Dyn *dyncon, *dynconend;
3844 struct tilepro_elf_link_hash_table *htab;
3845
3846 htab = tilepro_elf_hash_table (info);
3847 BFD_ASSERT (htab != NULL);
3848 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3849 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3850 for (; dyncon < dynconend; dyncon++)
3851 {
3852 Elf_Internal_Dyn dyn;
3853 asection *s;
3854
3855 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3856
3857 switch (dyn.d_tag)
3858 {
3859 case DT_PLTGOT:
3860 s = htab->elf.sgotplt;
3861 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3862 break;
3863 case DT_JMPREL:
3864 s = htab->elf.srelplt;
3865 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3866 break;
3867 case DT_PLTRELSZ:
3868 s = htab->elf.srelplt;
3869 dyn.d_un.d_val = s->size;
3870 break;
3871 default:
3872 continue;
3873 }
3874
3875 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3876 }
3877 return TRUE;
3878 }
3879
3880 static bfd_boolean
tilepro_elf_finish_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)3881 tilepro_elf_finish_dynamic_sections (bfd *output_bfd,
3882 struct bfd_link_info *info)
3883 {
3884 bfd *dynobj;
3885 asection *sdyn;
3886 struct tilepro_elf_link_hash_table *htab;
3887
3888 htab = tilepro_elf_hash_table (info);
3889 BFD_ASSERT (htab != NULL);
3890 dynobj = htab->elf.dynobj;
3891
3892 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3893
3894 if (elf_hash_table (info)->dynamic_sections_created)
3895 {
3896 asection *splt;
3897 bfd_boolean ret;
3898
3899 splt = htab->elf.splt;
3900 BFD_ASSERT (splt != NULL && sdyn != NULL);
3901
3902 ret = tilepro_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
3903
3904 if (ret != TRUE)
3905 return ret;
3906
3907 /* Fill in the first entry in the procedure linkage table. */
3908 if (splt->size > 0)
3909 {
3910 memcpy (splt->contents, tilepro_plt0_entry, PLT_HEADER_SIZE);
3911 memset (splt->contents + PLT_HEADER_SIZE, 0,
3912 PLT_ENTRY_SIZE - PLT_HEADER_SIZE);
3913 }
3914
3915 if (elf_section_data (splt->output_section) != NULL)
3916 elf_section_data (splt->output_section)->this_hdr.sh_entsize
3917 = PLT_ENTRY_SIZE;
3918 }
3919
3920 if (htab->elf.sgotplt)
3921 {
3922 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
3923 {
3924 (*_bfd_error_handler)
3925 (_("discarded output section: `%A'"), htab->elf.sgotplt);
3926 return FALSE;
3927 }
3928
3929 if (htab->elf.sgotplt->size > 0)
3930 {
3931 /* Write the first two entries in .got.plt, needed for the dynamic
3932 linker. */
3933 bfd_put_32 (output_bfd, (bfd_vma) -1,
3934 htab->elf.sgotplt->contents);
3935 bfd_put_32 (output_bfd, (bfd_vma) 0,
3936 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
3937 }
3938
3939 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize
3940 = GOT_ENTRY_SIZE;
3941 }
3942
3943 if (htab->elf.sgot)
3944 {
3945 if (htab->elf.sgot->size > 0)
3946 {
3947 /* Set the first entry in the global offset table to the address of
3948 the dynamic section. */
3949 bfd_vma val = (sdyn ?
3950 sdyn->output_section->vma + sdyn->output_offset :
3951 0);
3952 bfd_put_32 (output_bfd, val, htab->elf.sgot->contents);
3953 }
3954
3955 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
3956 = GOT_ENTRY_SIZE;
3957 }
3958
3959 return TRUE;
3960 }
3961
3962
3963
3964 /* Return address for Ith PLT stub in section PLT, for relocation REL
3965 or (bfd_vma) -1 if it should not be included. */
3966
3967 static bfd_vma
tilepro_elf_plt_sym_val(bfd_vma i,const asection * plt,const arelent * rel ATTRIBUTE_UNUSED)3968 tilepro_elf_plt_sym_val (bfd_vma i, const asection *plt,
3969 const arelent *rel ATTRIBUTE_UNUSED)
3970 {
3971 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3972 }
3973
3974 static enum elf_reloc_type_class
tilepro_reloc_type_class(const struct bfd_link_info * info ATTRIBUTE_UNUSED,const asection * rel_sec ATTRIBUTE_UNUSED,const Elf_Internal_Rela * rela)3975 tilepro_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3976 const asection *rel_sec ATTRIBUTE_UNUSED,
3977 const Elf_Internal_Rela *rela)
3978 {
3979 switch ((int) ELF32_R_TYPE (rela->r_info))
3980 {
3981 case R_TILEPRO_RELATIVE:
3982 return reloc_class_relative;
3983 case R_TILEPRO_JMP_SLOT:
3984 return reloc_class_plt;
3985 case R_TILEPRO_COPY:
3986 return reloc_class_copy;
3987 default:
3988 return reloc_class_normal;
3989 }
3990 }
3991
3992 static int
tilepro_additional_program_headers(bfd * abfd,struct bfd_link_info * info ATTRIBUTE_UNUSED)3993 tilepro_additional_program_headers (bfd *abfd,
3994 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3995 {
3996 /* Each .intrpt section specified by the user adds another PT_LOAD
3997 header since the sections are discontiguous. */
3998 static const char intrpt_sections[4][9] =
3999 {
4000 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4001 };
4002 int count = 0;
4003 int i;
4004
4005 for (i = 0; i < 4; i++)
4006 {
4007 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4008 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4009 ++count;
4010 }
4011
4012 /* Add four "padding" headers in to leave room in case a custom linker
4013 script does something fancy. Otherwise ld complains that it ran
4014 out of program headers and refuses to link. */
4015 count += 4;
4016
4017 return count;
4018 }
4019
4020 #define ELF_ARCH bfd_arch_tilepro
4021 #define ELF_TARGET_ID TILEPRO_ELF_DATA
4022 #define ELF_MACHINE_CODE EM_TILEPRO
4023 #define ELF_MAXPAGESIZE 0x10000
4024 #define ELF_COMMONPAGESIZE 0x10000
4025
4026 #define TARGET_LITTLE_SYM tilepro_elf32_vec
4027 #define TARGET_LITTLE_NAME "elf32-tilepro"
4028
4029 #define elf_backend_reloc_type_class tilepro_reloc_type_class
4030
4031 #define bfd_elf32_bfd_reloc_name_lookup tilepro_reloc_name_lookup
4032 #define bfd_elf32_bfd_link_hash_table_create tilepro_elf_link_hash_table_create
4033 #define bfd_elf32_bfd_reloc_type_lookup tilepro_reloc_type_lookup
4034
4035 #define elf_backend_copy_indirect_symbol tilepro_elf_copy_indirect_symbol
4036 #define elf_backend_create_dynamic_sections tilepro_elf_create_dynamic_sections
4037 #define elf_backend_check_relocs tilepro_elf_check_relocs
4038 #define elf_backend_adjust_dynamic_symbol tilepro_elf_adjust_dynamic_symbol
4039 #define elf_backend_omit_section_dynsym tilepro_elf_omit_section_dynsym
4040 #define elf_backend_size_dynamic_sections tilepro_elf_size_dynamic_sections
4041 #define elf_backend_relocate_section tilepro_elf_relocate_section
4042 #define elf_backend_finish_dynamic_symbol tilepro_elf_finish_dynamic_symbol
4043 #define elf_backend_finish_dynamic_sections tilepro_elf_finish_dynamic_sections
4044 #define elf_backend_gc_mark_hook tilepro_elf_gc_mark_hook
4045 #define elf_backend_gc_sweep_hook tilepro_elf_gc_sweep_hook
4046 #define elf_backend_plt_sym_val tilepro_elf_plt_sym_val
4047 #define elf_info_to_howto_rel NULL
4048 #define elf_info_to_howto tilepro_info_to_howto_rela
4049 #define elf_backend_grok_prstatus tilepro_elf_grok_prstatus
4050 #define elf_backend_grok_psinfo tilepro_elf_grok_psinfo
4051 #define elf_backend_additional_program_headers tilepro_additional_program_headers
4052
4053 #define bfd_elf32_mkobject tilepro_elf_mkobject
4054
4055 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4056
4057 #define elf_backend_can_gc_sections 1
4058 #define elf_backend_can_refcount 1
4059 #define elf_backend_want_got_plt 1
4060 #define elf_backend_plt_readonly 1
4061 /* Align PLT mod 64 byte L2 line size. */
4062 #define elf_backend_plt_alignment 6
4063 #define elf_backend_want_plt_sym 1
4064 #define elf_backend_got_header_size GOT_ENTRY_SIZE
4065 #define elf_backend_rela_normal 1
4066 #define elf_backend_default_execstack 0
4067
4068 #include "elf32-target.h"
4069