1 /* 32-bit ELF support for TI C6X
2 Copyright (C) 2010-2014 Free Software Foundation, Inc.
3 Contributed by Joseph Myers <joseph@codesourcery.com>
4 Bernd Schmidt <bernds@codesourcery.com>
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include <limits.h>
25 #include "bfd.h"
26 #include "libbfd.h"
27 #include "libiberty.h"
28 #include "elf-bfd.h"
29 #include "elf/tic6x.h"
30 #include "elf32-tic6x.h"
31
32 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
33
34 /* DSBT binaries have a default 128K stack. */
35 #define DEFAULT_STACK_SIZE 0x20000
36
37 /* The size in bytes of an entry in the procedure linkage table. */
38 #define PLT_ENTRY_SIZE 24
39
40 /* TI C6X ELF linker hash table. */
41
42 struct elf32_tic6x_link_hash_table
43 {
44 struct elf_link_hash_table elf;
45
46 /* Short-cuts to get to dynamic linker sections. */
47 asection *sdynbss;
48 asection *srelbss;
49
50 /* C6X specific command line arguments. */
51 struct elf32_tic6x_params params;
52
53 /* Small local sym cache. */
54 struct sym_cache sym_cache;
55
56 /* The output BFD, for convenience. */
57 bfd *obfd;
58
59 /* The .dsbt section. */
60 asection *dsbt;
61 };
62
63 /* Get the TI C6X ELF linker hash table from a link_info structure. */
64
65 #define elf32_tic6x_hash_table(p) \
66 ((struct elf32_tic6x_link_hash_table *) ((p)->hash))
67
68 /* TI C6X ELF linker hash entry. */
69
70 struct elf32_tic6x_link_hash_entry
71 {
72 struct elf_link_hash_entry elf;
73
74 /* Track dynamic relocs copied for this symbol. */
75 struct elf_dyn_relocs *dyn_relocs;
76 };
77
78 typedef enum
79 {
80 DELETE_EXIDX_ENTRY,
81 INSERT_EXIDX_CANTUNWIND_AT_END
82 }
83 tic6x_unwind_edit_type;
84
85 /* A (sorted) list of edits to apply to an unwind table. */
86 typedef struct tic6x_unwind_table_edit
87 {
88 tic6x_unwind_edit_type type;
89 /* Note: we sometimes want to insert an unwind entry corresponding to a
90 section different from the one we're currently writing out, so record the
91 (text) section this edit relates to here. */
92 asection *linked_section;
93 unsigned int index;
94 struct tic6x_unwind_table_edit *next;
95 }
96 tic6x_unwind_table_edit;
97
98 typedef struct _tic6x_elf_section_data
99 {
100 /* Information about mapping symbols. */
101 struct bfd_elf_section_data elf;
102 /* Information about unwind tables. */
103 union
104 {
105 /* Unwind info attached to a text section. */
106 struct
107 {
108 asection *tic6x_exidx_sec;
109 } text;
110
111 /* Unwind info attached to an .c6xabi.exidx section. */
112 struct
113 {
114 tic6x_unwind_table_edit *unwind_edit_list;
115 tic6x_unwind_table_edit *unwind_edit_tail;
116 } exidx;
117 } u;
118 }
119 _tic6x_elf_section_data;
120
121 #define elf32_tic6x_section_data(sec) \
122 ((_tic6x_elf_section_data *) elf_section_data (sec))
123
124 struct elf32_tic6x_obj_tdata
125 {
126 struct elf_obj_tdata root;
127
128 /* Whether to use RELA relocations when generating relocations.
129 This is a per-object flag to allow the assembler to generate REL
130 relocations for use in linker testcases. */
131 bfd_boolean use_rela_p;
132 };
133
134 #define elf32_tic6x_tdata(abfd) \
135 ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any)
136
137 #define is_tic6x_elf(bfd) \
138 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
139 && elf_tdata (bfd) != NULL \
140 && elf_object_id (bfd) == TIC6X_ELF_DATA)
141
142 /* C6X ELF uses two common sections. One is the usual one, and the
143 other is for small objects. All the small objects are kept
144 together, and then referenced via the gp pointer, which yields
145 faster assembler code. This is what we use for the small common
146 section. This approach is copied from ecoff.c. */
147 static asection tic6x_elf_scom_section;
148 static asymbol tic6x_elf_scom_symbol;
149 static asymbol *tic6x_elf_scom_symbol_ptr;
150
151 static reloc_howto_type elf32_tic6x_howto_table[] =
152 {
153 HOWTO (R_C6000_NONE, /* type */
154 0, /* rightshift */
155 0, /* size (0 = byte, 1 = short, 2 = long) */
156 0, /* bitsize */
157 FALSE, /* pc_relative */
158 0, /* bitpos */
159 complain_overflow_dont,/* complain_on_overflow */
160 bfd_elf_generic_reloc, /* special_function */
161 "R_C6000_NONE", /* name */
162 FALSE, /* partial_inplace */
163 0, /* src_mask */
164 0, /* dst_mask */
165 FALSE), /* pcrel_offset */
166 HOWTO (R_C6000_ABS32, /* type */
167 0, /* rightshift */
168 2, /* size (0 = byte, 1 = short, 2 = long) */
169 32, /* bitsize */
170 FALSE, /* pc_relative */
171 0, /* bitpos */
172 complain_overflow_dont,/* complain_on_overflow */
173 bfd_elf_generic_reloc, /* special_function */
174 "R_C6000_ABS32", /* name */
175 FALSE, /* partial_inplace */
176 0, /* src_mask */
177 0xffffffff, /* dst_mask */
178 FALSE), /* pcrel_offset */
179 HOWTO (R_C6000_ABS16, /* type */
180 0, /* rightshift */
181 1, /* size (0 = byte, 1 = short, 2 = long) */
182 16, /* bitsize */
183 FALSE, /* pc_relative */
184 0, /* bitpos */
185 complain_overflow_bitfield,/* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_C6000_ABS16", /* name */
188 FALSE, /* partial_inplace */
189 0, /* src_mask */
190 0x0000ffff, /* dst_mask */
191 FALSE), /* pcrel_offset */
192 HOWTO (R_C6000_ABS8, /* type */
193 0, /* rightshift */
194 0, /* size (0 = byte, 1 = short, 2 = long) */
195 8, /* bitsize */
196 FALSE, /* pc_relative */
197 0, /* bitpos */
198 complain_overflow_bitfield,/* complain_on_overflow */
199 bfd_elf_generic_reloc, /* special_function */
200 "R_C6000_ABS8", /* name */
201 FALSE, /* partial_inplace */
202 0, /* src_mask */
203 0x000000ff, /* dst_mask */
204 FALSE), /* pcrel_offset */
205 HOWTO (R_C6000_PCR_S21, /* type */
206 2, /* rightshift */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 21, /* bitsize */
209 TRUE, /* pc_relative */
210 7, /* bitpos */
211 complain_overflow_signed,/* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_C6000_PCR_S21", /* name */
214 FALSE, /* partial_inplace */
215 0, /* src_mask */
216 0x0fffff80, /* dst_mask */
217 TRUE), /* pcrel_offset */
218 HOWTO (R_C6000_PCR_S12, /* type */
219 2, /* rightshift */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 12, /* bitsize */
222 TRUE, /* pc_relative */
223 16, /* bitpos */
224 complain_overflow_signed,/* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_C6000_PCR_S12", /* name */
227 FALSE, /* partial_inplace */
228 0, /* src_mask */
229 0x0fff0000, /* dst_mask */
230 TRUE), /* pcrel_offset */
231 HOWTO (R_C6000_PCR_S10, /* type */
232 2, /* rightshift */
233 2, /* size (0 = byte, 1 = short, 2 = long) */
234 10, /* bitsize */
235 TRUE, /* pc_relative */
236 13, /* bitpos */
237 complain_overflow_signed,/* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_C6000_PCR_S10", /* name */
240 FALSE, /* partial_inplace */
241 0, /* src_mask */
242 0x007fe000, /* dst_mask */
243 TRUE), /* pcrel_offset */
244 HOWTO (R_C6000_PCR_S7, /* type */
245 2, /* rightshift */
246 2, /* size (0 = byte, 1 = short, 2 = long) */
247 7, /* bitsize */
248 TRUE, /* pc_relative */
249 16, /* bitpos */
250 complain_overflow_signed,/* complain_on_overflow */
251 bfd_elf_generic_reloc, /* special_function */
252 "R_C6000_PCR_S7", /* name */
253 FALSE, /* partial_inplace */
254 0, /* src_mask */
255 0x007f0000, /* dst_mask */
256 TRUE), /* pcrel_offset */
257 HOWTO (R_C6000_ABS_S16, /* type */
258 0, /* rightshift */
259 2, /* size (0 = byte, 1 = short, 2 = long) */
260 16, /* bitsize */
261 FALSE, /* pc_relative */
262 7, /* bitpos */
263 complain_overflow_signed,/* complain_on_overflow */
264 bfd_elf_generic_reloc, /* special_function */
265 "R_C6000_ABS_S16", /* name */
266 FALSE, /* partial_inplace */
267 0, /* src_mask */
268 0x007fff80, /* dst_mask */
269 FALSE), /* pcrel_offset */
270 HOWTO (R_C6000_ABS_L16, /* type */
271 0, /* rightshift */
272 2, /* size (0 = byte, 1 = short, 2 = long) */
273 16, /* bitsize */
274 FALSE, /* pc_relative */
275 7, /* bitpos */
276 complain_overflow_dont,/* complain_on_overflow */
277 bfd_elf_generic_reloc, /* special_function */
278 "R_C6000_ABS_L16", /* name */
279 FALSE, /* partial_inplace */
280 0, /* src_mask */
281 0x007fff80, /* dst_mask */
282 FALSE), /* pcrel_offset */
283 HOWTO (R_C6000_ABS_H16, /* type */
284 16, /* rightshift */
285 2, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
287 FALSE, /* pc_relative */
288 7, /* bitpos */
289 complain_overflow_dont,/* complain_on_overflow */
290 bfd_elf_generic_reloc, /* special_function */
291 "R_C6000_ABS_H16", /* name */
292 FALSE, /* partial_inplace */
293 0, /* src_mask */
294 0x007fff80, /* dst_mask */
295 FALSE), /* pcrel_offset */
296 HOWTO (R_C6000_SBR_U15_B, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 15, /* bitsize */
300 FALSE, /* pc_relative */
301 8, /* bitpos */
302 complain_overflow_unsigned,/* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_C6000_SBR_U15_B", /* name */
305 FALSE, /* partial_inplace */
306 0, /* src_mask */
307 0x007fff00, /* dst_mask */
308 FALSE), /* pcrel_offset */
309 HOWTO (R_C6000_SBR_U15_H, /* type */
310 1, /* rightshift */
311 2, /* size (0 = byte, 1 = short, 2 = long) */
312 15, /* bitsize */
313 FALSE, /* pc_relative */
314 8, /* bitpos */
315 complain_overflow_unsigned,/* complain_on_overflow */
316 bfd_elf_generic_reloc, /* special_function */
317 "R_C6000_SBR_U15_H", /* name */
318 FALSE, /* partial_inplace */
319 0, /* src_mask */
320 0x007fff00, /* dst_mask */
321 FALSE), /* pcrel_offset */
322 HOWTO (R_C6000_SBR_U15_W, /* type */
323 2, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 15, /* bitsize */
326 FALSE, /* pc_relative */
327 8, /* bitpos */
328 complain_overflow_unsigned,/* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_C6000_SBR_U15_W", /* name */
331 FALSE, /* partial_inplace */
332 0, /* src_mask */
333 0x007fff00, /* dst_mask */
334 FALSE), /* pcrel_offset */
335 HOWTO (R_C6000_SBR_S16, /* type */
336 0, /* rightshift */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
339 FALSE, /* pc_relative */
340 7, /* bitpos */
341 complain_overflow_signed,/* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_C6000_SBR_S16", /* name */
344 FALSE, /* partial_inplace */
345 0, /* src_mask */
346 0x007fff80, /* dst_mask */
347 FALSE), /* pcrel_offset */
348 HOWTO (R_C6000_SBR_L16_B, /* type */
349 0, /* rightshift */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
351 16, /* bitsize */
352 FALSE, /* pc_relative */
353 7, /* bitpos */
354 complain_overflow_dont,/* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_C6000_SBR_L16_B", /* name */
357 FALSE, /* partial_inplace */
358 0, /* src_mask */
359 0x007fff80, /* dst_mask */
360 FALSE), /* pcrel_offset */
361 HOWTO (R_C6000_SBR_L16_H, /* type */
362 1, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
365 FALSE, /* pc_relative */
366 7, /* bitpos */
367 complain_overflow_dont,/* complain_on_overflow */
368 bfd_elf_generic_reloc, /* special_function */
369 "R_C6000_SBR_L16_H", /* name */
370 FALSE, /* partial_inplace */
371 0, /* src_mask */
372 0x007fff80, /* dst_mask */
373 FALSE), /* pcrel_offset */
374 HOWTO (R_C6000_SBR_L16_W, /* type */
375 2, /* rightshift */
376 2, /* size (0 = byte, 1 = short, 2 = long) */
377 16, /* bitsize */
378 FALSE, /* pc_relative */
379 7, /* bitpos */
380 complain_overflow_dont,/* complain_on_overflow */
381 bfd_elf_generic_reloc, /* special_function */
382 "R_C6000_SBR_L16_W", /* name */
383 FALSE, /* partial_inplace */
384 0, /* src_mask */
385 0x007fff80, /* dst_mask */
386 FALSE), /* pcrel_offset */
387 HOWTO (R_C6000_SBR_H16_B, /* type */
388 16, /* rightshift */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
390 16, /* bitsize */
391 FALSE, /* pc_relative */
392 7, /* bitpos */
393 complain_overflow_dont,/* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_C6000_SBR_H16_B", /* name */
396 FALSE, /* partial_inplace */
397 0, /* src_mask */
398 0x007fff80, /* dst_mask */
399 FALSE), /* pcrel_offset */
400 HOWTO (R_C6000_SBR_H16_H, /* type */
401 17, /* rightshift */
402 2, /* size (0 = byte, 1 = short, 2 = long) */
403 16, /* bitsize */
404 FALSE, /* pc_relative */
405 7, /* bitpos */
406 complain_overflow_dont,/* complain_on_overflow */
407 bfd_elf_generic_reloc, /* special_function */
408 "R_C6000_SBR_H16_H", /* name */
409 FALSE, /* partial_inplace */
410 0, /* src_mask */
411 0x007fff80, /* dst_mask */
412 FALSE), /* pcrel_offset */
413 HOWTO (R_C6000_SBR_H16_W, /* type */
414 18, /* rightshift */
415 2, /* size (0 = byte, 1 = short, 2 = long) */
416 16, /* bitsize */
417 FALSE, /* pc_relative */
418 7, /* bitpos */
419 complain_overflow_dont,/* complain_on_overflow */
420 bfd_elf_generic_reloc, /* special_function */
421 "R_C6000_SBR_H16_W", /* name */
422 FALSE, /* partial_inplace */
423 0, /* src_mask */
424 0x007fff80, /* dst_mask */
425 FALSE), /* pcrel_offset */
426 HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
427 2, /* rightshift */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
429 15, /* bitsize */
430 FALSE, /* pc_relative */
431 8, /* bitpos */
432 complain_overflow_unsigned,/* complain_on_overflow */
433 bfd_elf_generic_reloc, /* special_function */
434 "R_C6000_SBR_GOT_U15_W",/* name */
435 FALSE, /* partial_inplace */
436 0, /* src_mask */
437 0x007fff00, /* dst_mask */
438 FALSE), /* pcrel_offset */
439 HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
440 2, /* rightshift */
441 2, /* size (0 = byte, 1 = short, 2 = long) */
442 16, /* bitsize */
443 FALSE, /* pc_relative */
444 7, /* bitpos */
445 complain_overflow_dont,/* complain_on_overflow */
446 bfd_elf_generic_reloc, /* special_function */
447 "R_C6000_SBR_GOT_L16_W",/* name */
448 FALSE, /* partial_inplace */
449 0, /* src_mask */
450 0x007fff80, /* dst_mask */
451 FALSE), /* pcrel_offset */
452 HOWTO (R_C6000_SBR_GOT_H16_W, /* type */
453 18, /* rightshift */
454 2, /* size (0 = byte, 1 = short, 2 = long) */
455 16, /* bitsize */
456 FALSE, /* pc_relative */
457 7, /* bitpos */
458 complain_overflow_dont,/* complain_on_overflow */
459 bfd_elf_generic_reloc, /* special_function */
460 "R_C6000_SBR_GOT_H16_W",/* name */
461 FALSE, /* partial_inplace */
462 0, /* src_mask */
463 0x007fff80, /* dst_mask */
464 FALSE), /* pcrel_offset */
465 HOWTO (R_C6000_DSBT_INDEX, /* type */
466 0, /* rightshift */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
468 15, /* bitsize */
469 FALSE, /* pc_relative */
470 8, /* bitpos */
471 complain_overflow_unsigned,/* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_C6000_DSBT_INDEX", /* name */
474 FALSE, /* partial_inplace */
475 0, /* src_mask */
476 0x007fff00, /* dst_mask */
477 FALSE), /* pcrel_offset */
478 HOWTO (R_C6000_PREL31, /* type */
479 1, /* rightshift */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
481 31, /* bitsize */
482 TRUE, /* pc_relative */
483 0, /* bitpos */
484 complain_overflow_dont,/* complain_on_overflow */
485 bfd_elf_generic_reloc, /* special_function */
486 "R_C6000_PREL31", /* name */
487 FALSE, /* partial_inplace */
488 0, /* src_mask */
489 0x7fffffff, /* dst_mask */
490 TRUE), /* pcrel_offset */
491 HOWTO (R_C6000_COPY, /* type */
492 0, /* rightshift */
493 2, /* size (0 = byte, 1 = short, 2 = long) */
494 32, /* bitsize */
495 FALSE, /* pc_relative */
496 0, /* bitpos */
497 complain_overflow_dont,/* complain_on_overflow */
498 bfd_elf_generic_reloc, /* special_function */
499 "R_C6000_COPY", /* name */
500 FALSE, /* partial_inplace */
501 0, /* src_mask */
502 0xffffffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
504 HOWTO (R_C6000_JUMP_SLOT, /* type */
505 0, /* rightshift */
506 2, /* size (0 = byte, 1 = short, 2 = long) */
507 32, /* bitsize */
508 FALSE, /* pc_relative */
509 0, /* bitpos */
510 complain_overflow_dont,/* complain_on_overflow */
511 bfd_elf_generic_reloc, /* special_function */
512 "R_C6000_JUMP_SLOT", /* name */
513 FALSE, /* partial_inplace */
514 0, /* src_mask */
515 0xffffffff, /* dst_mask */
516 FALSE), /* pcrel_offset */
517 HOWTO (R_C6000_EHTYPE, /* type */
518 0, /* rightshift */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
520 32, /* bitsize */
521 FALSE, /* pc_relative */
522 0, /* bitpos */
523 complain_overflow_dont,/* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_C6000_EHTYPE", /* name */
526 FALSE, /* partial_inplace */
527 0, /* src_mask */
528 0xffffffff, /* dst_mask */
529 FALSE), /* pcrel_offset */
530 HOWTO (R_C6000_PCR_H16, /* type */
531 16, /* rightshift */
532 2, /* size (0 = byte, 1 = short, 2 = long) */
533 16, /* bitsize */
534 TRUE, /* pc_relative */
535 7, /* bitpos */
536 complain_overflow_dont,/* complain_on_overflow */
537 bfd_elf_generic_reloc, /* special_function */
538 "R_C6000_PCR_H16", /* name */
539 FALSE, /* partial_inplace */
540 0, /* src_mask */
541 0x007fff80, /* dst_mask */
542 TRUE), /* pcrel_offset */
543 HOWTO (R_C6000_PCR_L16, /* type */
544 0, /* rightshift */
545 2, /* size (0 = byte, 1 = short, 2 = long) */
546 16, /* bitsize */
547 TRUE, /* pc_relative */
548 7, /* bitpos */
549 complain_overflow_dont,/* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_C6000_PCR_L16", /* name */
552 FALSE, /* partial_inplace */
553 0, /* src_mask */
554 0x007fff80, /* dst_mask */
555 TRUE), /* pcrel_offset */
556 EMPTY_HOWTO (31),
557 EMPTY_HOWTO (32),
558 EMPTY_HOWTO (33),
559 EMPTY_HOWTO (34),
560 EMPTY_HOWTO (35),
561 EMPTY_HOWTO (36),
562 EMPTY_HOWTO (37),
563 EMPTY_HOWTO (38),
564 EMPTY_HOWTO (39),
565 EMPTY_HOWTO (40),
566 EMPTY_HOWTO (41),
567 EMPTY_HOWTO (42),
568 EMPTY_HOWTO (43),
569 EMPTY_HOWTO (44),
570 EMPTY_HOWTO (45),
571 EMPTY_HOWTO (46),
572 EMPTY_HOWTO (47),
573 EMPTY_HOWTO (48),
574 EMPTY_HOWTO (49),
575 EMPTY_HOWTO (50),
576 EMPTY_HOWTO (51),
577 EMPTY_HOWTO (52),
578 EMPTY_HOWTO (53),
579 EMPTY_HOWTO (54),
580 EMPTY_HOWTO (55),
581 EMPTY_HOWTO (56),
582 EMPTY_HOWTO (57),
583 EMPTY_HOWTO (58),
584 EMPTY_HOWTO (59),
585 EMPTY_HOWTO (60),
586 EMPTY_HOWTO (61),
587 EMPTY_HOWTO (62),
588 EMPTY_HOWTO (63),
589 EMPTY_HOWTO (64),
590 EMPTY_HOWTO (65),
591 EMPTY_HOWTO (66),
592 EMPTY_HOWTO (67),
593 EMPTY_HOWTO (68),
594 EMPTY_HOWTO (69),
595 EMPTY_HOWTO (70),
596 EMPTY_HOWTO (71),
597 EMPTY_HOWTO (72),
598 EMPTY_HOWTO (73),
599 EMPTY_HOWTO (74),
600 EMPTY_HOWTO (75),
601 EMPTY_HOWTO (76),
602 EMPTY_HOWTO (77),
603 EMPTY_HOWTO (78),
604 EMPTY_HOWTO (79),
605 EMPTY_HOWTO (80),
606 EMPTY_HOWTO (81),
607 EMPTY_HOWTO (82),
608 EMPTY_HOWTO (83),
609 EMPTY_HOWTO (84),
610 EMPTY_HOWTO (85),
611 EMPTY_HOWTO (86),
612 EMPTY_HOWTO (87),
613 EMPTY_HOWTO (88),
614 EMPTY_HOWTO (89),
615 EMPTY_HOWTO (90),
616 EMPTY_HOWTO (91),
617 EMPTY_HOWTO (92),
618 EMPTY_HOWTO (93),
619 EMPTY_HOWTO (94),
620 EMPTY_HOWTO (95),
621 EMPTY_HOWTO (96),
622 EMPTY_HOWTO (97),
623 EMPTY_HOWTO (98),
624 EMPTY_HOWTO (99),
625 EMPTY_HOWTO (100),
626 EMPTY_HOWTO (101),
627 EMPTY_HOWTO (102),
628 EMPTY_HOWTO (103),
629 EMPTY_HOWTO (104),
630 EMPTY_HOWTO (105),
631 EMPTY_HOWTO (106),
632 EMPTY_HOWTO (107),
633 EMPTY_HOWTO (108),
634 EMPTY_HOWTO (109),
635 EMPTY_HOWTO (110),
636 EMPTY_HOWTO (111),
637 EMPTY_HOWTO (112),
638 EMPTY_HOWTO (113),
639 EMPTY_HOWTO (114),
640 EMPTY_HOWTO (115),
641 EMPTY_HOWTO (116),
642 EMPTY_HOWTO (117),
643 EMPTY_HOWTO (118),
644 EMPTY_HOWTO (119),
645 EMPTY_HOWTO (120),
646 EMPTY_HOWTO (121),
647 EMPTY_HOWTO (122),
648 EMPTY_HOWTO (123),
649 EMPTY_HOWTO (124),
650 EMPTY_HOWTO (125),
651 EMPTY_HOWTO (126),
652 EMPTY_HOWTO (127),
653 EMPTY_HOWTO (128),
654 EMPTY_HOWTO (129),
655 EMPTY_HOWTO (130),
656 EMPTY_HOWTO (131),
657 EMPTY_HOWTO (132),
658 EMPTY_HOWTO (133),
659 EMPTY_HOWTO (134),
660 EMPTY_HOWTO (135),
661 EMPTY_HOWTO (136),
662 EMPTY_HOWTO (137),
663 EMPTY_HOWTO (138),
664 EMPTY_HOWTO (139),
665 EMPTY_HOWTO (140),
666 EMPTY_HOWTO (141),
667 EMPTY_HOWTO (142),
668 EMPTY_HOWTO (143),
669 EMPTY_HOWTO (144),
670 EMPTY_HOWTO (145),
671 EMPTY_HOWTO (146),
672 EMPTY_HOWTO (147),
673 EMPTY_HOWTO (148),
674 EMPTY_HOWTO (149),
675 EMPTY_HOWTO (150),
676 EMPTY_HOWTO (151),
677 EMPTY_HOWTO (152),
678 EMPTY_HOWTO (153),
679 EMPTY_HOWTO (154),
680 EMPTY_HOWTO (155),
681 EMPTY_HOWTO (156),
682 EMPTY_HOWTO (157),
683 EMPTY_HOWTO (158),
684 EMPTY_HOWTO (159),
685 EMPTY_HOWTO (160),
686 EMPTY_HOWTO (161),
687 EMPTY_HOWTO (162),
688 EMPTY_HOWTO (163),
689 EMPTY_HOWTO (164),
690 EMPTY_HOWTO (165),
691 EMPTY_HOWTO (166),
692 EMPTY_HOWTO (167),
693 EMPTY_HOWTO (168),
694 EMPTY_HOWTO (169),
695 EMPTY_HOWTO (170),
696 EMPTY_HOWTO (171),
697 EMPTY_HOWTO (172),
698 EMPTY_HOWTO (173),
699 EMPTY_HOWTO (174),
700 EMPTY_HOWTO (175),
701 EMPTY_HOWTO (176),
702 EMPTY_HOWTO (177),
703 EMPTY_HOWTO (178),
704 EMPTY_HOWTO (179),
705 EMPTY_HOWTO (180),
706 EMPTY_HOWTO (181),
707 EMPTY_HOWTO (182),
708 EMPTY_HOWTO (183),
709 EMPTY_HOWTO (184),
710 EMPTY_HOWTO (185),
711 EMPTY_HOWTO (186),
712 EMPTY_HOWTO (187),
713 EMPTY_HOWTO (188),
714 EMPTY_HOWTO (189),
715 EMPTY_HOWTO (190),
716 EMPTY_HOWTO (191),
717 EMPTY_HOWTO (192),
718 EMPTY_HOWTO (193),
719 EMPTY_HOWTO (194),
720 EMPTY_HOWTO (195),
721 EMPTY_HOWTO (196),
722 EMPTY_HOWTO (197),
723 EMPTY_HOWTO (198),
724 EMPTY_HOWTO (199),
725 EMPTY_HOWTO (200),
726 EMPTY_HOWTO (201),
727 EMPTY_HOWTO (202),
728 EMPTY_HOWTO (203),
729 EMPTY_HOWTO (204),
730 EMPTY_HOWTO (205),
731 EMPTY_HOWTO (206),
732 EMPTY_HOWTO (207),
733 EMPTY_HOWTO (208),
734 EMPTY_HOWTO (209),
735 EMPTY_HOWTO (210),
736 EMPTY_HOWTO (211),
737 EMPTY_HOWTO (212),
738 EMPTY_HOWTO (213),
739 EMPTY_HOWTO (214),
740 EMPTY_HOWTO (215),
741 EMPTY_HOWTO (216),
742 EMPTY_HOWTO (217),
743 EMPTY_HOWTO (218),
744 EMPTY_HOWTO (219),
745 EMPTY_HOWTO (220),
746 EMPTY_HOWTO (221),
747 EMPTY_HOWTO (222),
748 EMPTY_HOWTO (223),
749 EMPTY_HOWTO (224),
750 EMPTY_HOWTO (225),
751 EMPTY_HOWTO (226),
752 EMPTY_HOWTO (227),
753 EMPTY_HOWTO (228),
754 EMPTY_HOWTO (229),
755 EMPTY_HOWTO (230),
756 EMPTY_HOWTO (231),
757 EMPTY_HOWTO (232),
758 EMPTY_HOWTO (233),
759 EMPTY_HOWTO (234),
760 EMPTY_HOWTO (235),
761 EMPTY_HOWTO (236),
762 EMPTY_HOWTO (237),
763 EMPTY_HOWTO (238),
764 EMPTY_HOWTO (239),
765 EMPTY_HOWTO (240),
766 EMPTY_HOWTO (241),
767 EMPTY_HOWTO (242),
768 EMPTY_HOWTO (243),
769 EMPTY_HOWTO (244),
770 EMPTY_HOWTO (245),
771 EMPTY_HOWTO (246),
772 EMPTY_HOWTO (247),
773 EMPTY_HOWTO (248),
774 EMPTY_HOWTO (249),
775 EMPTY_HOWTO (250),
776 EMPTY_HOWTO (251),
777 EMPTY_HOWTO (252),
778 HOWTO (R_C6000_ALIGN, /* type */
779 0, /* rightshift */
780 0, /* size (0 = byte, 1 = short, 2 = long) */
781 0, /* bitsize */
782 FALSE, /* pc_relative */
783 0, /* bitpos */
784 complain_overflow_dont,/* complain_on_overflow */
785 bfd_elf_generic_reloc, /* special_function */
786 "R_C6000_ALIGN", /* name */
787 FALSE, /* partial_inplace */
788 0, /* src_mask */
789 0, /* dst_mask */
790 FALSE), /* pcrel_offset */
791 HOWTO (R_C6000_FPHEAD, /* type */
792 0, /* rightshift */
793 0, /* size (0 = byte, 1 = short, 2 = long) */
794 0, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont,/* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_C6000_FPHEAD", /* name */
800 FALSE, /* partial_inplace */
801 0, /* src_mask */
802 0, /* dst_mask */
803 FALSE), /* pcrel_offset */
804 HOWTO (R_C6000_NOCMP, /* type */
805 0, /* rightshift */
806 0, /* size (0 = byte, 1 = short, 2 = long) */
807 0, /* bitsize */
808 FALSE, /* pc_relative */
809 0, /* bitpos */
810 complain_overflow_dont,/* complain_on_overflow */
811 bfd_elf_generic_reloc, /* special_function */
812 "R_C6000_NOCMP", /* name */
813 FALSE, /* partial_inplace */
814 0, /* src_mask */
815 0, /* dst_mask */
816 FALSE) /* pcrel_offset */
817 };
818
819 static reloc_howto_type elf32_tic6x_howto_table_rel[] =
820 {
821 HOWTO (R_C6000_NONE, /* type */
822 0, /* rightshift */
823 0, /* size (0 = byte, 1 = short, 2 = long) */
824 0, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont,/* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_C6000_NONE", /* name */
830 TRUE, /* partial_inplace */
831 0, /* src_mask */
832 0, /* dst_mask */
833 FALSE), /* pcrel_offset */
834 HOWTO (R_C6000_ABS32, /* type */
835 0, /* rightshift */
836 2, /* size (0 = byte, 1 = short, 2 = long) */
837 32, /* bitsize */
838 FALSE, /* pc_relative */
839 0, /* bitpos */
840 complain_overflow_dont,/* complain_on_overflow */
841 bfd_elf_generic_reloc, /* special_function */
842 "R_C6000_ABS32", /* name */
843 TRUE, /* partial_inplace */
844 0xffffffff, /* src_mask */
845 0xffffffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
847 HOWTO (R_C6000_ABS16, /* type */
848 0, /* rightshift */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
850 16, /* bitsize */
851 FALSE, /* pc_relative */
852 0, /* bitpos */
853 complain_overflow_bitfield,/* complain_on_overflow */
854 bfd_elf_generic_reloc, /* special_function */
855 "R_C6000_ABS16", /* name */
856 TRUE, /* partial_inplace */
857 0x0000ffff, /* src_mask */
858 0x0000ffff, /* dst_mask */
859 FALSE), /* pcrel_offset */
860 HOWTO (R_C6000_ABS8, /* type */
861 0, /* rightshift */
862 0, /* size (0 = byte, 1 = short, 2 = long) */
863 8, /* bitsize */
864 FALSE, /* pc_relative */
865 0, /* bitpos */
866 complain_overflow_bitfield,/* complain_on_overflow */
867 bfd_elf_generic_reloc, /* special_function */
868 "R_C6000_ABS8", /* name */
869 TRUE, /* partial_inplace */
870 0x000000ff, /* src_mask */
871 0x000000ff, /* dst_mask */
872 FALSE), /* pcrel_offset */
873 HOWTO (R_C6000_PCR_S21, /* type */
874 2, /* rightshift */
875 2, /* size (0 = byte, 1 = short, 2 = long) */
876 21, /* bitsize */
877 TRUE, /* pc_relative */
878 7, /* bitpos */
879 complain_overflow_signed,/* complain_on_overflow */
880 bfd_elf_generic_reloc, /* special_function */
881 "R_C6000_PCR_S21", /* name */
882 TRUE, /* partial_inplace */
883 0x0fffff80, /* src_mask */
884 0x0fffff80, /* dst_mask */
885 TRUE), /* pcrel_offset */
886 HOWTO (R_C6000_PCR_S12, /* type */
887 2, /* rightshift */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
889 12, /* bitsize */
890 TRUE, /* pc_relative */
891 16, /* bitpos */
892 complain_overflow_signed,/* complain_on_overflow */
893 bfd_elf_generic_reloc, /* special_function */
894 "R_C6000_PCR_S12", /* name */
895 TRUE, /* partial_inplace */
896 0x0fff0000, /* src_mask */
897 0x0fff0000, /* dst_mask */
898 TRUE), /* pcrel_offset */
899 HOWTO (R_C6000_PCR_S10, /* type */
900 2, /* rightshift */
901 2, /* size (0 = byte, 1 = short, 2 = long) */
902 10, /* bitsize */
903 TRUE, /* pc_relative */
904 13, /* bitpos */
905 complain_overflow_signed,/* complain_on_overflow */
906 bfd_elf_generic_reloc, /* special_function */
907 "R_C6000_PCR_S10", /* name */
908 TRUE, /* partial_inplace */
909 0x007fe000, /* src_mask */
910 0x007fe000, /* dst_mask */
911 TRUE), /* pcrel_offset */
912 HOWTO (R_C6000_PCR_S7, /* type */
913 2, /* rightshift */
914 2, /* size (0 = byte, 1 = short, 2 = long) */
915 7, /* bitsize */
916 TRUE, /* pc_relative */
917 16, /* bitpos */
918 complain_overflow_signed,/* complain_on_overflow */
919 bfd_elf_generic_reloc, /* special_function */
920 "R_C6000_PCR_S7", /* name */
921 TRUE, /* partial_inplace */
922 0x007f0000, /* src_mask */
923 0x007f0000, /* dst_mask */
924 TRUE), /* pcrel_offset */
925 HOWTO (R_C6000_ABS_S16, /* type */
926 0, /* rightshift */
927 2, /* size (0 = byte, 1 = short, 2 = long) */
928 16, /* bitsize */
929 FALSE, /* pc_relative */
930 7, /* bitpos */
931 complain_overflow_signed,/* complain_on_overflow */
932 bfd_elf_generic_reloc, /* special_function */
933 "R_C6000_ABS_S16", /* name */
934 TRUE, /* partial_inplace */
935 0x007fff80, /* src_mask */
936 0x007fff80, /* dst_mask */
937 FALSE), /* pcrel_offset */
938 HOWTO (R_C6000_ABS_L16, /* type */
939 0, /* rightshift */
940 2, /* size (0 = byte, 1 = short, 2 = long) */
941 16, /* bitsize */
942 FALSE, /* pc_relative */
943 7, /* bitpos */
944 complain_overflow_dont,/* complain_on_overflow */
945 bfd_elf_generic_reloc, /* special_function */
946 "R_C6000_ABS_L16", /* name */
947 TRUE, /* partial_inplace */
948 0x007fff80, /* src_mask */
949 0x007fff80, /* dst_mask */
950 FALSE), /* pcrel_offset */
951 EMPTY_HOWTO (R_C6000_ABS_H16),
952 HOWTO (R_C6000_SBR_U15_B, /* type */
953 0, /* rightshift */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
955 15, /* bitsize */
956 FALSE, /* pc_relative */
957 8, /* bitpos */
958 complain_overflow_unsigned,/* complain_on_overflow */
959 bfd_elf_generic_reloc, /* special_function */
960 "R_C6000_SBR_U15_B", /* name */
961 TRUE, /* partial_inplace */
962 0x007fff00, /* src_mask */
963 0x007fff00, /* dst_mask */
964 FALSE), /* pcrel_offset */
965 HOWTO (R_C6000_SBR_U15_H, /* type */
966 1, /* rightshift */
967 2, /* size (0 = byte, 1 = short, 2 = long) */
968 15, /* bitsize */
969 FALSE, /* pc_relative */
970 8, /* bitpos */
971 complain_overflow_unsigned,/* complain_on_overflow */
972 bfd_elf_generic_reloc, /* special_function */
973 "R_C6000_SBR_U15_H", /* name */
974 TRUE, /* partial_inplace */
975 0x007fff00, /* src_mask */
976 0x007fff00, /* dst_mask */
977 FALSE), /* pcrel_offset */
978 HOWTO (R_C6000_SBR_U15_W, /* type */
979 2, /* rightshift */
980 2, /* size (0 = byte, 1 = short, 2 = long) */
981 15, /* bitsize */
982 FALSE, /* pc_relative */
983 8, /* bitpos */
984 complain_overflow_unsigned,/* complain_on_overflow */
985 bfd_elf_generic_reloc, /* special_function */
986 "R_C6000_SBR_U15_W", /* name */
987 TRUE, /* partial_inplace */
988 0x007fff00, /* src_mask */
989 0x007fff00, /* dst_mask */
990 FALSE), /* pcrel_offset */
991 HOWTO (R_C6000_SBR_S16, /* type */
992 0, /* rightshift */
993 2, /* size (0 = byte, 1 = short, 2 = long) */
994 16, /* bitsize */
995 FALSE, /* pc_relative */
996 7, /* bitpos */
997 complain_overflow_signed,/* complain_on_overflow */
998 bfd_elf_generic_reloc, /* special_function */
999 "R_C6000_SBR_S16", /* name */
1000 TRUE, /* partial_inplace */
1001 0x007fff80, /* src_mask */
1002 0x007fff80, /* dst_mask */
1003 FALSE), /* pcrel_offset */
1004 HOWTO (R_C6000_SBR_L16_B, /* type */
1005 0, /* rightshift */
1006 2, /* size (0 = byte, 1 = short, 2 = long) */
1007 16, /* bitsize */
1008 FALSE, /* pc_relative */
1009 7, /* bitpos */
1010 complain_overflow_dont,/* complain_on_overflow */
1011 bfd_elf_generic_reloc, /* special_function */
1012 "R_C6000_SBR_L16_B", /* name */
1013 TRUE, /* partial_inplace */
1014 0x007fff80, /* src_mask */
1015 0x007fff80, /* dst_mask */
1016 FALSE), /* pcrel_offset */
1017 HOWTO (R_C6000_SBR_L16_H, /* type */
1018 1, /* rightshift */
1019 2, /* size (0 = byte, 1 = short, 2 = long) */
1020 16, /* bitsize */
1021 FALSE, /* pc_relative */
1022 7, /* bitpos */
1023 complain_overflow_dont,/* complain_on_overflow */
1024 bfd_elf_generic_reloc, /* special_function */
1025 "R_C6000_SBR_L16_H", /* name */
1026 TRUE, /* partial_inplace */
1027 0x007fff80, /* src_mask */
1028 0x007fff80, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1030 HOWTO (R_C6000_SBR_L16_W, /* type */
1031 2, /* rightshift */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 16, /* bitsize */
1034 FALSE, /* pc_relative */
1035 7, /* bitpos */
1036 complain_overflow_dont,/* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_C6000_SBR_L16_W", /* name */
1039 TRUE, /* partial_inplace */
1040 0x007fff80, /* src_mask */
1041 0x007fff80, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1043 EMPTY_HOWTO (R_C6000_SBR_H16_B),
1044 EMPTY_HOWTO (R_C6000_SBR_H16_H),
1045 EMPTY_HOWTO (R_C6000_SBR_H16_W),
1046 HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
1047 2, /* rightshift */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1049 15, /* bitsize */
1050 FALSE, /* pc_relative */
1051 8, /* bitpos */
1052 complain_overflow_unsigned,/* complain_on_overflow */
1053 bfd_elf_generic_reloc, /* special_function */
1054 "R_C6000_SBR_GOT_U15_W",/* name */
1055 TRUE, /* partial_inplace */
1056 0x007fff00, /* src_mask */
1057 0x007fff00, /* dst_mask */
1058 FALSE), /* pcrel_offset */
1059 HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
1060 2, /* rightshift */
1061 2, /* size (0 = byte, 1 = short, 2 = long) */
1062 16, /* bitsize */
1063 FALSE, /* pc_relative */
1064 7, /* bitpos */
1065 complain_overflow_dont,/* complain_on_overflow */
1066 bfd_elf_generic_reloc, /* special_function */
1067 "R_C6000_SBR_GOT_L16_W",/* name */
1068 TRUE, /* partial_inplace */
1069 0x007fff80, /* src_mask */
1070 0x007fff80, /* dst_mask */
1071 FALSE), /* pcrel_offset */
1072 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W),
1073 HOWTO (R_C6000_DSBT_INDEX, /* type */
1074 0, /* rightshift */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 15, /* bitsize */
1077 FALSE, /* pc_relative */
1078 8, /* bitpos */
1079 complain_overflow_unsigned,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_C6000_DSBT_INDEX", /* name */
1082 TRUE, /* partial_inplace */
1083 0, /* src_mask */
1084 0x007fff00, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086 HOWTO (R_C6000_PREL31, /* type */
1087 1, /* rightshift */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1089 31, /* bitsize */
1090 TRUE, /* pc_relative */
1091 0, /* bitpos */
1092 complain_overflow_dont,/* complain_on_overflow */
1093 bfd_elf_generic_reloc, /* special_function */
1094 "R_C6000_PREL31", /* name */
1095 TRUE, /* partial_inplace */
1096 0, /* src_mask */
1097 0x7fffffff, /* dst_mask */
1098 TRUE), /* pcrel_offset */
1099 HOWTO (R_C6000_COPY, /* type */
1100 0, /* rightshift */
1101 2, /* size (0 = byte, 1 = short, 2 = long) */
1102 32, /* bitsize */
1103 FALSE, /* pc_relative */
1104 0, /* bitpos */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_C6000_COPY", /* name */
1108 TRUE, /* partial_inplace */
1109 0, /* src_mask */
1110 0xffffffff, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1112 HOWTO (R_C6000_JUMP_SLOT, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 32, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_dont,/* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_C6000_JUMP_SLOT", /* name */
1121 FALSE, /* partial_inplace */
1122 0, /* src_mask */
1123 0xffffffff, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1125 HOWTO (R_C6000_EHTYPE, /* type */
1126 0, /* rightshift */
1127 2, /* size (0 = byte, 1 = short, 2 = long) */
1128 32, /* bitsize */
1129 FALSE, /* pc_relative */
1130 0, /* bitpos */
1131 complain_overflow_dont,/* complain_on_overflow */
1132 bfd_elf_generic_reloc, /* special_function */
1133 "R_C6000_EHTYPE", /* name */
1134 FALSE, /* partial_inplace */
1135 0, /* src_mask */
1136 0xffffffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
1138 EMPTY_HOWTO (R_C6000_PCR_H16),
1139 EMPTY_HOWTO (R_C6000_PCR_L16),
1140 EMPTY_HOWTO (31),
1141 EMPTY_HOWTO (32),
1142 EMPTY_HOWTO (33),
1143 EMPTY_HOWTO (34),
1144 EMPTY_HOWTO (35),
1145 EMPTY_HOWTO (36),
1146 EMPTY_HOWTO (37),
1147 EMPTY_HOWTO (38),
1148 EMPTY_HOWTO (39),
1149 EMPTY_HOWTO (40),
1150 EMPTY_HOWTO (41),
1151 EMPTY_HOWTO (42),
1152 EMPTY_HOWTO (43),
1153 EMPTY_HOWTO (44),
1154 EMPTY_HOWTO (45),
1155 EMPTY_HOWTO (46),
1156 EMPTY_HOWTO (47),
1157 EMPTY_HOWTO (48),
1158 EMPTY_HOWTO (49),
1159 EMPTY_HOWTO (50),
1160 EMPTY_HOWTO (51),
1161 EMPTY_HOWTO (52),
1162 EMPTY_HOWTO (53),
1163 EMPTY_HOWTO (54),
1164 EMPTY_HOWTO (55),
1165 EMPTY_HOWTO (56),
1166 EMPTY_HOWTO (57),
1167 EMPTY_HOWTO (58),
1168 EMPTY_HOWTO (59),
1169 EMPTY_HOWTO (60),
1170 EMPTY_HOWTO (61),
1171 EMPTY_HOWTO (62),
1172 EMPTY_HOWTO (63),
1173 EMPTY_HOWTO (64),
1174 EMPTY_HOWTO (65),
1175 EMPTY_HOWTO (66),
1176 EMPTY_HOWTO (67),
1177 EMPTY_HOWTO (68),
1178 EMPTY_HOWTO (69),
1179 EMPTY_HOWTO (70),
1180 EMPTY_HOWTO (71),
1181 EMPTY_HOWTO (72),
1182 EMPTY_HOWTO (73),
1183 EMPTY_HOWTO (74),
1184 EMPTY_HOWTO (75),
1185 EMPTY_HOWTO (76),
1186 EMPTY_HOWTO (77),
1187 EMPTY_HOWTO (78),
1188 EMPTY_HOWTO (79),
1189 EMPTY_HOWTO (80),
1190 EMPTY_HOWTO (81),
1191 EMPTY_HOWTO (82),
1192 EMPTY_HOWTO (83),
1193 EMPTY_HOWTO (84),
1194 EMPTY_HOWTO (85),
1195 EMPTY_HOWTO (86),
1196 EMPTY_HOWTO (87),
1197 EMPTY_HOWTO (88),
1198 EMPTY_HOWTO (89),
1199 EMPTY_HOWTO (90),
1200 EMPTY_HOWTO (91),
1201 EMPTY_HOWTO (92),
1202 EMPTY_HOWTO (93),
1203 EMPTY_HOWTO (94),
1204 EMPTY_HOWTO (95),
1205 EMPTY_HOWTO (96),
1206 EMPTY_HOWTO (97),
1207 EMPTY_HOWTO (98),
1208 EMPTY_HOWTO (99),
1209 EMPTY_HOWTO (100),
1210 EMPTY_HOWTO (101),
1211 EMPTY_HOWTO (102),
1212 EMPTY_HOWTO (103),
1213 EMPTY_HOWTO (104),
1214 EMPTY_HOWTO (105),
1215 EMPTY_HOWTO (106),
1216 EMPTY_HOWTO (107),
1217 EMPTY_HOWTO (108),
1218 EMPTY_HOWTO (109),
1219 EMPTY_HOWTO (110),
1220 EMPTY_HOWTO (111),
1221 EMPTY_HOWTO (112),
1222 EMPTY_HOWTO (113),
1223 EMPTY_HOWTO (114),
1224 EMPTY_HOWTO (115),
1225 EMPTY_HOWTO (116),
1226 EMPTY_HOWTO (117),
1227 EMPTY_HOWTO (118),
1228 EMPTY_HOWTO (119),
1229 EMPTY_HOWTO (120),
1230 EMPTY_HOWTO (121),
1231 EMPTY_HOWTO (122),
1232 EMPTY_HOWTO (123),
1233 EMPTY_HOWTO (124),
1234 EMPTY_HOWTO (125),
1235 EMPTY_HOWTO (126),
1236 EMPTY_HOWTO (127),
1237 EMPTY_HOWTO (128),
1238 EMPTY_HOWTO (129),
1239 EMPTY_HOWTO (130),
1240 EMPTY_HOWTO (131),
1241 EMPTY_HOWTO (132),
1242 EMPTY_HOWTO (133),
1243 EMPTY_HOWTO (134),
1244 EMPTY_HOWTO (135),
1245 EMPTY_HOWTO (136),
1246 EMPTY_HOWTO (137),
1247 EMPTY_HOWTO (138),
1248 EMPTY_HOWTO (139),
1249 EMPTY_HOWTO (140),
1250 EMPTY_HOWTO (141),
1251 EMPTY_HOWTO (142),
1252 EMPTY_HOWTO (143),
1253 EMPTY_HOWTO (144),
1254 EMPTY_HOWTO (145),
1255 EMPTY_HOWTO (146),
1256 EMPTY_HOWTO (147),
1257 EMPTY_HOWTO (148),
1258 EMPTY_HOWTO (149),
1259 EMPTY_HOWTO (150),
1260 EMPTY_HOWTO (151),
1261 EMPTY_HOWTO (152),
1262 EMPTY_HOWTO (153),
1263 EMPTY_HOWTO (154),
1264 EMPTY_HOWTO (155),
1265 EMPTY_HOWTO (156),
1266 EMPTY_HOWTO (157),
1267 EMPTY_HOWTO (158),
1268 EMPTY_HOWTO (159),
1269 EMPTY_HOWTO (160),
1270 EMPTY_HOWTO (161),
1271 EMPTY_HOWTO (162),
1272 EMPTY_HOWTO (163),
1273 EMPTY_HOWTO (164),
1274 EMPTY_HOWTO (165),
1275 EMPTY_HOWTO (166),
1276 EMPTY_HOWTO (167),
1277 EMPTY_HOWTO (168),
1278 EMPTY_HOWTO (169),
1279 EMPTY_HOWTO (170),
1280 EMPTY_HOWTO (171),
1281 EMPTY_HOWTO (172),
1282 EMPTY_HOWTO (173),
1283 EMPTY_HOWTO (174),
1284 EMPTY_HOWTO (175),
1285 EMPTY_HOWTO (176),
1286 EMPTY_HOWTO (177),
1287 EMPTY_HOWTO (178),
1288 EMPTY_HOWTO (179),
1289 EMPTY_HOWTO (180),
1290 EMPTY_HOWTO (181),
1291 EMPTY_HOWTO (182),
1292 EMPTY_HOWTO (183),
1293 EMPTY_HOWTO (184),
1294 EMPTY_HOWTO (185),
1295 EMPTY_HOWTO (186),
1296 EMPTY_HOWTO (187),
1297 EMPTY_HOWTO (188),
1298 EMPTY_HOWTO (189),
1299 EMPTY_HOWTO (190),
1300 EMPTY_HOWTO (191),
1301 EMPTY_HOWTO (192),
1302 EMPTY_HOWTO (193),
1303 EMPTY_HOWTO (194),
1304 EMPTY_HOWTO (195),
1305 EMPTY_HOWTO (196),
1306 EMPTY_HOWTO (197),
1307 EMPTY_HOWTO (198),
1308 EMPTY_HOWTO (199),
1309 EMPTY_HOWTO (200),
1310 EMPTY_HOWTO (201),
1311 EMPTY_HOWTO (202),
1312 EMPTY_HOWTO (203),
1313 EMPTY_HOWTO (204),
1314 EMPTY_HOWTO (205),
1315 EMPTY_HOWTO (206),
1316 EMPTY_HOWTO (207),
1317 EMPTY_HOWTO (208),
1318 EMPTY_HOWTO (209),
1319 EMPTY_HOWTO (210),
1320 EMPTY_HOWTO (211),
1321 EMPTY_HOWTO (212),
1322 EMPTY_HOWTO (213),
1323 EMPTY_HOWTO (214),
1324 EMPTY_HOWTO (215),
1325 EMPTY_HOWTO (216),
1326 EMPTY_HOWTO (217),
1327 EMPTY_HOWTO (218),
1328 EMPTY_HOWTO (219),
1329 EMPTY_HOWTO (220),
1330 EMPTY_HOWTO (221),
1331 EMPTY_HOWTO (222),
1332 EMPTY_HOWTO (223),
1333 EMPTY_HOWTO (224),
1334 EMPTY_HOWTO (225),
1335 EMPTY_HOWTO (226),
1336 EMPTY_HOWTO (227),
1337 EMPTY_HOWTO (228),
1338 EMPTY_HOWTO (229),
1339 EMPTY_HOWTO (230),
1340 EMPTY_HOWTO (231),
1341 EMPTY_HOWTO (232),
1342 EMPTY_HOWTO (233),
1343 EMPTY_HOWTO (234),
1344 EMPTY_HOWTO (235),
1345 EMPTY_HOWTO (236),
1346 EMPTY_HOWTO (237),
1347 EMPTY_HOWTO (238),
1348 EMPTY_HOWTO (239),
1349 EMPTY_HOWTO (240),
1350 EMPTY_HOWTO (241),
1351 EMPTY_HOWTO (242),
1352 EMPTY_HOWTO (243),
1353 EMPTY_HOWTO (244),
1354 EMPTY_HOWTO (245),
1355 EMPTY_HOWTO (246),
1356 EMPTY_HOWTO (247),
1357 EMPTY_HOWTO (248),
1358 EMPTY_HOWTO (249),
1359 EMPTY_HOWTO (250),
1360 EMPTY_HOWTO (251),
1361 EMPTY_HOWTO (252),
1362 HOWTO (R_C6000_ALIGN, /* type */
1363 0, /* rightshift */
1364 0, /* size (0 = byte, 1 = short, 2 = long) */
1365 0, /* bitsize */
1366 FALSE, /* pc_relative */
1367 0, /* bitpos */
1368 complain_overflow_dont,/* complain_on_overflow */
1369 bfd_elf_generic_reloc, /* special_function */
1370 "R_C6000_ALIGN", /* name */
1371 TRUE, /* partial_inplace */
1372 0, /* src_mask */
1373 0, /* dst_mask */
1374 FALSE), /* pcrel_offset */
1375 HOWTO (R_C6000_FPHEAD, /* type */
1376 0, /* rightshift */
1377 0, /* size (0 = byte, 1 = short, 2 = long) */
1378 0, /* bitsize */
1379 FALSE, /* pc_relative */
1380 0, /* bitpos */
1381 complain_overflow_dont,/* complain_on_overflow */
1382 bfd_elf_generic_reloc, /* special_function */
1383 "R_C6000_FPHEAD", /* name */
1384 TRUE, /* partial_inplace */
1385 0, /* src_mask */
1386 0, /* dst_mask */
1387 FALSE), /* pcrel_offset */
1388 HOWTO (R_C6000_NOCMP, /* type */
1389 0, /* rightshift */
1390 0, /* size (0 = byte, 1 = short, 2 = long) */
1391 0, /* bitsize */
1392 FALSE, /* pc_relative */
1393 0, /* bitpos */
1394 complain_overflow_dont,/* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_C6000_NOCMP", /* name */
1397 TRUE, /* partial_inplace */
1398 0, /* src_mask */
1399 0, /* dst_mask */
1400 FALSE) /* pcrel_offset */
1401 };
1402
1403 /* Map BFD relocations to ELF relocations. */
1404
1405 typedef struct
1406 {
1407 bfd_reloc_code_real_type bfd_reloc_val;
1408 enum elf_tic6x_reloc_type elf_reloc_val;
1409 } tic6x_reloc_map;
1410
1411 static const tic6x_reloc_map elf32_tic6x_reloc_map[] =
1412 {
1413 { BFD_RELOC_NONE, R_C6000_NONE },
1414 { BFD_RELOC_32, R_C6000_ABS32 },
1415 { BFD_RELOC_16, R_C6000_ABS16 },
1416 { BFD_RELOC_8, R_C6000_ABS8 },
1417 { BFD_RELOC_C6000_PCR_S21, R_C6000_PCR_S21 },
1418 { BFD_RELOC_C6000_PCR_S12, R_C6000_PCR_S12 },
1419 { BFD_RELOC_C6000_PCR_S10, R_C6000_PCR_S10 },
1420 { BFD_RELOC_C6000_PCR_S7, R_C6000_PCR_S7 },
1421 { BFD_RELOC_C6000_ABS_S16, R_C6000_ABS_S16 },
1422 { BFD_RELOC_C6000_ABS_L16, R_C6000_ABS_L16 },
1423 { BFD_RELOC_C6000_ABS_H16, R_C6000_ABS_H16 },
1424 { BFD_RELOC_C6000_SBR_U15_B, R_C6000_SBR_U15_B },
1425 { BFD_RELOC_C6000_SBR_U15_H, R_C6000_SBR_U15_H },
1426 { BFD_RELOC_C6000_SBR_U15_W, R_C6000_SBR_U15_W },
1427 { BFD_RELOC_C6000_SBR_S16, R_C6000_SBR_S16 },
1428 { BFD_RELOC_C6000_SBR_L16_B, R_C6000_SBR_L16_B },
1429 { BFD_RELOC_C6000_SBR_L16_H, R_C6000_SBR_L16_H },
1430 { BFD_RELOC_C6000_SBR_L16_W, R_C6000_SBR_L16_W },
1431 { BFD_RELOC_C6000_SBR_H16_B, R_C6000_SBR_H16_B },
1432 { BFD_RELOC_C6000_SBR_H16_H, R_C6000_SBR_H16_H },
1433 { BFD_RELOC_C6000_SBR_H16_W, R_C6000_SBR_H16_W },
1434 { BFD_RELOC_C6000_SBR_GOT_U15_W, R_C6000_SBR_GOT_U15_W },
1435 { BFD_RELOC_C6000_SBR_GOT_L16_W, R_C6000_SBR_GOT_L16_W },
1436 { BFD_RELOC_C6000_SBR_GOT_H16_W, R_C6000_SBR_GOT_H16_W },
1437 { BFD_RELOC_C6000_DSBT_INDEX, R_C6000_DSBT_INDEX },
1438 { BFD_RELOC_C6000_PREL31, R_C6000_PREL31 },
1439 { BFD_RELOC_C6000_COPY, R_C6000_COPY },
1440 { BFD_RELOC_C6000_JUMP_SLOT, R_C6000_JUMP_SLOT },
1441 { BFD_RELOC_C6000_EHTYPE, R_C6000_EHTYPE },
1442 { BFD_RELOC_C6000_PCR_H16, R_C6000_PCR_H16 },
1443 { BFD_RELOC_C6000_PCR_L16, R_C6000_PCR_L16 },
1444 { BFD_RELOC_C6000_ALIGN, R_C6000_ALIGN },
1445 { BFD_RELOC_C6000_FPHEAD, R_C6000_FPHEAD },
1446 { BFD_RELOC_C6000_NOCMP, R_C6000_NOCMP }
1447 };
1448
1449 static reloc_howto_type *
elf32_tic6x_reloc_type_lookup(bfd * abfd,bfd_reloc_code_real_type code)1450 elf32_tic6x_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1451 {
1452 unsigned int i;
1453
1454 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_reloc_map); i++)
1455 if (elf32_tic6x_reloc_map[i].bfd_reloc_val == code)
1456 {
1457 enum elf_tic6x_reloc_type elf_reloc_val;
1458 reloc_howto_type *howto;
1459
1460 elf_reloc_val = elf32_tic6x_reloc_map[i].elf_reloc_val;
1461 if (elf32_tic6x_tdata (abfd)->use_rela_p)
1462 howto = &elf32_tic6x_howto_table[elf_reloc_val];
1463 else
1464 howto = &elf32_tic6x_howto_table_rel[elf_reloc_val];
1465
1466 /* Some relocations are RELA-only; do not return them for
1467 REL. */
1468 if (howto->name == NULL)
1469 howto = NULL;
1470
1471 return howto;
1472 }
1473
1474 return NULL;
1475 }
1476
1477 static reloc_howto_type *
elf32_tic6x_reloc_name_lookup(bfd * abfd,const char * r_name)1478 elf32_tic6x_reloc_name_lookup (bfd *abfd, const char *r_name)
1479 {
1480 if (elf32_tic6x_tdata (abfd)->use_rela_p)
1481 {
1482 unsigned int i;
1483
1484 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table); i++)
1485 if (elf32_tic6x_howto_table[i].name != NULL
1486 && strcasecmp (elf32_tic6x_howto_table[i].name, r_name) == 0)
1487 return &elf32_tic6x_howto_table[i];
1488 }
1489 else
1490 {
1491 unsigned int i;
1492
1493 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table_rel); i++)
1494 if (elf32_tic6x_howto_table_rel[i].name != NULL
1495 && strcasecmp (elf32_tic6x_howto_table_rel[i].name, r_name) == 0)
1496 return &elf32_tic6x_howto_table_rel[i];
1497 }
1498
1499 return NULL;
1500 }
1501
1502 static void
elf32_tic6x_info_to_howto(bfd * abfd ATTRIBUTE_UNUSED,arelent * bfd_reloc,Elf_Internal_Rela * elf_reloc)1503 elf32_tic6x_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
1504 Elf_Internal_Rela *elf_reloc)
1505 {
1506 unsigned int r_type;
1507
1508 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1509 if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table))
1510 bfd_reloc->howto = NULL;
1511 else
1512 bfd_reloc->howto = &elf32_tic6x_howto_table[r_type];
1513 }
1514
1515 static void
elf32_tic6x_info_to_howto_rel(bfd * abfd ATTRIBUTE_UNUSED,arelent * bfd_reloc,Elf_Internal_Rela * elf_reloc)1516 elf32_tic6x_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
1517 Elf_Internal_Rela *elf_reloc)
1518 {
1519 unsigned int r_type;
1520
1521 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1522 if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table_rel))
1523 bfd_reloc->howto = NULL;
1524 else
1525 bfd_reloc->howto = &elf32_tic6x_howto_table_rel[r_type];
1526 }
1527
1528 void
elf32_tic6x_set_use_rela_p(bfd * abfd,bfd_boolean use_rela_p)1529 elf32_tic6x_set_use_rela_p (bfd *abfd, bfd_boolean use_rela_p)
1530 {
1531 elf32_tic6x_tdata (abfd)->use_rela_p = use_rela_p;
1532 }
1533
1534 /* Create an entry in a C6X ELF linker hash table. */
1535
1536 static struct bfd_hash_entry *
elf32_tic6x_link_hash_newfunc(struct bfd_hash_entry * entry,struct bfd_hash_table * table,const char * string)1537 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry *entry,
1538 struct bfd_hash_table *table,
1539 const char *string)
1540 {
1541 /* Allocate the structure if it has not already been allocated by a
1542 subclass. */
1543 if (entry == NULL)
1544 {
1545 entry = bfd_hash_allocate (table,
1546 sizeof (struct elf32_tic6x_link_hash_entry));
1547 if (entry == NULL)
1548 return entry;
1549 }
1550
1551 /* Call the allocation method of the superclass. */
1552 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1553 if (entry != NULL)
1554 {
1555 struct elf32_tic6x_link_hash_entry *eh;
1556
1557 eh = (struct elf32_tic6x_link_hash_entry *) entry;
1558 eh->dyn_relocs = NULL;
1559 }
1560
1561 return entry;
1562 }
1563
1564 /* Create a C6X ELF linker hash table. */
1565
1566 static struct bfd_link_hash_table *
elf32_tic6x_link_hash_table_create(bfd * abfd)1567 elf32_tic6x_link_hash_table_create (bfd *abfd)
1568 {
1569 struct elf32_tic6x_link_hash_table *ret;
1570 bfd_size_type amt = sizeof (struct elf32_tic6x_link_hash_table);
1571
1572 ret = bfd_zmalloc (amt);
1573 if (ret == NULL)
1574 return NULL;
1575
1576 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1577 elf32_tic6x_link_hash_newfunc,
1578 sizeof (struct elf32_tic6x_link_hash_entry),
1579 TIC6X_ELF_DATA))
1580 {
1581 free (ret);
1582 return NULL;
1583 }
1584
1585 ret->obfd = abfd;
1586 ret->elf.is_relocatable_executable = 1;
1587
1588 return &ret->elf.root;
1589 }
1590
1591 static bfd_boolean
elf32_tic6x_final_link(bfd * abfd,struct bfd_link_info * info)1592 elf32_tic6x_final_link (bfd *abfd, struct bfd_link_info *info)
1593 {
1594 if (info->shared)
1595 {
1596 obj_attribute *out_attr;
1597 out_attr = elf_known_obj_attributes_proc (abfd);
1598 if (out_attr[Tag_ABI_PIC].i == 0)
1599 {
1600 _bfd_error_handler (_("warning: generating a shared library "
1601 "containing non-PIC code"));
1602 }
1603 if (out_attr[Tag_ABI_PID].i == 0)
1604 {
1605 _bfd_error_handler (_("warning: generating a shared library "
1606 "containing non-PID code"));
1607 }
1608 }
1609 /* Invoke the regular ELF backend linker to do all the work. */
1610 if (!bfd_elf_final_link (abfd, info))
1611 return FALSE;
1612
1613 return TRUE;
1614 }
1615
1616 /* Called to pass PARAMS to the backend. We store them in the hash table
1617 associated with INFO. */
1618
1619 void
elf32_tic6x_setup(struct bfd_link_info * info,struct elf32_tic6x_params * params)1620 elf32_tic6x_setup (struct bfd_link_info *info,
1621 struct elf32_tic6x_params *params)
1622 {
1623 struct elf32_tic6x_link_hash_table *htab = elf32_tic6x_hash_table (info);
1624 htab->params = *params;
1625 }
1626
1627 /* Determine if we're dealing with a DSBT object. */
1628
1629 static bfd_boolean
elf32_tic6x_using_dsbt(bfd * abfd)1630 elf32_tic6x_using_dsbt (bfd *abfd)
1631 {
1632 return bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC,
1633 Tag_ABI_DSBT);
1634 }
1635
1636 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
1637 sections in DYNOBJ, and set up shortcuts to them in our hash
1638 table. */
1639
1640 static bfd_boolean
elf32_tic6x_create_dynamic_sections(bfd * dynobj,struct bfd_link_info * info)1641 elf32_tic6x_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
1642 {
1643 struct elf32_tic6x_link_hash_table *htab;
1644 flagword flags;
1645
1646 htab = elf32_tic6x_hash_table (info);
1647 if (htab == NULL)
1648 return FALSE;
1649
1650 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1651 return FALSE;
1652
1653 /* Create .dsbt */
1654 flags = (SEC_ALLOC | SEC_LOAD
1655 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1656 htab->dsbt = bfd_make_section_anyway_with_flags (dynobj, ".dsbt",
1657 flags);
1658 if (htab->dsbt == NULL
1659 || ! bfd_set_section_alignment (dynobj, htab->dsbt, 2)
1660 || ! bfd_set_section_alignment (dynobj, htab->elf.splt, 5))
1661 return FALSE;
1662
1663 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1664 if (!info->shared)
1665 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1666
1667 if (!htab->sdynbss
1668 || (!info->shared && !htab->srelbss))
1669 abort ();
1670
1671 return TRUE;
1672 }
1673
1674 static bfd_boolean
elf32_tic6x_mkobject(bfd * abfd)1675 elf32_tic6x_mkobject (bfd *abfd)
1676 {
1677 bfd_boolean ret;
1678
1679 ret = bfd_elf_allocate_object (abfd, sizeof (struct elf32_tic6x_obj_tdata),
1680 TIC6X_ELF_DATA);
1681 if (ret)
1682 elf32_tic6x_set_use_rela_p (abfd, TRUE);
1683 return ret;
1684 }
1685
1686 /* Install relocation RELA into section SRELA, incrementing its
1687 reloc_count. */
1688
1689 static void
elf32_tic6x_install_rela(bfd * output_bfd,asection * srela,Elf_Internal_Rela * rela)1690 elf32_tic6x_install_rela (bfd *output_bfd, asection *srela,
1691 Elf_Internal_Rela *rela)
1692 {
1693 bfd_byte *loc;
1694 bfd_vma off = srela->reloc_count++ * sizeof (Elf32_External_Rela);
1695 loc = srela->contents + off;
1696 BFD_ASSERT (off < srela->size);
1697 bfd_elf32_swap_reloca_out (output_bfd, rela, loc);
1698 }
1699
1700 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents
1701 of the GOT at this offset have been initialized with the relocation. */
1702
1703 static void
elf32_tic6x_make_got_dynreloc(bfd * output_bfd,struct elf32_tic6x_link_hash_table * htab,asection * sym_sec,bfd_vma offset)1704 elf32_tic6x_make_got_dynreloc (bfd *output_bfd,
1705 struct elf32_tic6x_link_hash_table *htab,
1706 asection *sym_sec, bfd_vma offset)
1707 {
1708 asection *sgot = htab->elf.sgot;
1709 Elf_Internal_Rela outrel;
1710 int dynindx;
1711
1712 outrel.r_offset = sgot->output_section->vma + sgot->output_offset + offset;
1713 outrel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
1714 if (sym_sec && sym_sec->output_section
1715 && ! bfd_is_abs_section (sym_sec->output_section)
1716 && ! bfd_is_und_section (sym_sec->output_section))
1717 {
1718 dynindx = elf_section_data (sym_sec->output_section)->dynindx;
1719 outrel.r_addend -= sym_sec->output_section->vma;
1720 }
1721 else
1722 {
1723 dynindx = 0;
1724 }
1725 outrel.r_info = ELF32_R_INFO (dynindx, R_C6000_ABS32);
1726 elf32_tic6x_install_rela (output_bfd, htab->elf.srelgot, &outrel);
1727 }
1728
1729 /* Finish up dynamic symbol handling. We set the contents of various
1730 dynamic sections here. */
1731
1732 static bfd_boolean
elf32_tic6x_finish_dynamic_symbol(bfd * output_bfd,struct bfd_link_info * info,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)1733 elf32_tic6x_finish_dynamic_symbol (bfd * output_bfd,
1734 struct bfd_link_info *info,
1735 struct elf_link_hash_entry *h,
1736 Elf_Internal_Sym * sym)
1737 {
1738 bfd *dynobj;
1739 struct elf32_tic6x_link_hash_table *htab;
1740
1741 htab = elf32_tic6x_hash_table (info);
1742 dynobj = htab->elf.dynobj;
1743
1744 if (h->plt.offset != (bfd_vma) -1)
1745 {
1746 bfd_vma plt_index;
1747 bfd_vma got_section_offset, got_dp_offset, rela_offset;
1748 Elf_Internal_Rela rela;
1749 bfd_byte *loc;
1750 asection *plt, *gotplt, *relplt;
1751 const struct elf_backend_data *bed;
1752
1753 bed = get_elf_backend_data (output_bfd);
1754
1755 BFD_ASSERT (htab->elf.splt != NULL);
1756 plt = htab->elf.splt;
1757 gotplt = htab->elf.sgotplt;
1758 relplt = htab->elf.srelplt;
1759
1760 /* This symbol has an entry in the procedure linkage table. Set
1761 it up. */
1762
1763 if ((h->dynindx == -1
1764 && !((h->forced_local || info->executable)
1765 && h->def_regular
1766 && h->type == STT_GNU_IFUNC))
1767 || plt == NULL
1768 || gotplt == NULL
1769 || relplt == NULL)
1770 abort ();
1771
1772 /* Get the index in the procedure linkage table which
1773 corresponds to this symbol. This is the index of this symbol
1774 in all the symbols for which we are making plt entries. The
1775 first entry in the procedure linkage table is reserved.
1776
1777 Get the offset into the .got table of the entry that
1778 corresponds to this function. Each .got entry is 4 bytes.
1779 The first three are reserved.
1780
1781 For static executables, we don't reserve anything. */
1782
1783 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1784 got_section_offset = plt_index + bed->got_header_size / 4;
1785 got_dp_offset = got_section_offset + htab->params.dsbt_size;
1786 rela_offset = plt_index * sizeof (Elf32_External_Rela);
1787
1788 got_section_offset *= 4;
1789
1790 /* Fill in the entry in the procedure linkage table. */
1791
1792 /* ldw .d2t2 *+B14($GOT(f)), b2 */
1793 bfd_put_32 (output_bfd, got_dp_offset << 8 | 0x0100006e,
1794 plt->contents + h->plt.offset);
1795 /* mvk .s2 low(rela_offset), b0 */
1796 bfd_put_32 (output_bfd, (rela_offset & 0xffff) << 7 | 0x0000002a,
1797 plt->contents + h->plt.offset + 4);
1798 /* mvkh .s2 high(rela_offset), b0 */
1799 bfd_put_32 (output_bfd, ((rela_offset >> 16) & 0xffff) << 7 | 0x0000006a,
1800 plt->contents + h->plt.offset + 8);
1801 /* nop 2 */
1802 bfd_put_32 (output_bfd, 0x00002000,
1803 plt->contents + h->plt.offset + 12);
1804 /* b .s2 b2 */
1805 bfd_put_32 (output_bfd, 0x00080362,
1806 plt->contents + h->plt.offset + 16);
1807 /* nop 5 */
1808 bfd_put_32 (output_bfd, 0x00008000,
1809 plt->contents + h->plt.offset + 20);
1810
1811 /* Fill in the entry in the global offset table. */
1812 bfd_put_32 (output_bfd,
1813 (plt->output_section->vma + plt->output_offset),
1814 gotplt->contents + got_section_offset);
1815
1816 /* Fill in the entry in the .rel.plt section. */
1817 rela.r_offset = (gotplt->output_section->vma
1818 + gotplt->output_offset
1819 + got_section_offset);
1820 rela.r_info = ELF32_R_INFO (h->dynindx, R_C6000_JUMP_SLOT);
1821 rela.r_addend = 0;
1822 loc = relplt->contents + rela_offset;
1823 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1824
1825 if (!h->def_regular)
1826 {
1827 /* Mark the symbol as undefined, rather than as defined in
1828 the .plt section. */
1829 sym->st_shndx = SHN_UNDEF;
1830 sym->st_value = 0;
1831 }
1832 }
1833
1834 if (h->got.offset != (bfd_vma) -1)
1835 {
1836 asection *sgot;
1837 asection *srela;
1838
1839 /* This symbol has an entry in the global offset table.
1840 Set it up. */
1841
1842 sgot = bfd_get_linker_section (dynobj, ".got");
1843 srela = bfd_get_linker_section (dynobj, ".rela.got");
1844 BFD_ASSERT (sgot != NULL && srela != NULL);
1845
1846 /* If this is a -Bsymbolic link, and the symbol is defined
1847 locally, we just want to emit a RELATIVE reloc. Likewise if
1848 the symbol was forced to be local because of a version file.
1849 The entry in the global offset table will already have been
1850 initialized in the relocate_section function. */
1851 if (info->shared
1852 && (info->symbolic
1853 || h->dynindx == -1 || h->forced_local) && h->def_regular)
1854 {
1855 asection *s = h->root.u.def.section;
1856 elf32_tic6x_make_got_dynreloc (output_bfd, htab, s,
1857 h->got.offset & ~(bfd_vma) 1);
1858 }
1859 else
1860 {
1861 Elf_Internal_Rela outrel;
1862 bfd_put_32 (output_bfd, (bfd_vma) 0,
1863 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
1864 outrel.r_offset = (sgot->output_section->vma
1865 + sgot->output_offset
1866 + (h->got.offset & ~(bfd_vma) 1));
1867 outrel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_ABS32);
1868 outrel.r_addend = 0;
1869
1870 elf32_tic6x_install_rela (output_bfd, srela, &outrel);
1871 }
1872 }
1873
1874 if (h->needs_copy)
1875 {
1876 Elf_Internal_Rela rel;
1877
1878 /* This symbol needs a copy reloc. Set it up. */
1879
1880 if (h->dynindx == -1
1881 || (h->root.type != bfd_link_hash_defined
1882 && h->root.type != bfd_link_hash_defweak)
1883 || htab->srelbss == NULL)
1884 abort ();
1885
1886 rel.r_offset = (h->root.u.def.value
1887 + h->root.u.def.section->output_section->vma
1888 + h->root.u.def.section->output_offset);
1889 rel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_COPY);
1890 rel.r_addend = 0;
1891
1892 elf32_tic6x_install_rela (output_bfd, htab->srelbss, &rel);
1893 }
1894
1895 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1896 if (h == elf_hash_table (info)->hdynamic
1897 || h == elf_hash_table (info)->hgot)
1898 sym->st_shndx = SHN_ABS;
1899
1900 return TRUE;
1901 }
1902
1903 /* Unwinding tables are not referenced directly. This pass marks them as
1904 required if the corresponding code section is marked. */
1905
1906 static bfd_boolean
elf32_tic6x_gc_mark_extra_sections(struct bfd_link_info * info,elf_gc_mark_hook_fn gc_mark_hook)1907 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info *info,
1908 elf_gc_mark_hook_fn gc_mark_hook)
1909 {
1910 bfd *sub;
1911 Elf_Internal_Shdr **elf_shdrp;
1912 bfd_boolean again;
1913
1914 _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook);
1915
1916 /* Marking EH data may cause additional code sections to be marked,
1917 requiring multiple passes. */
1918 again = TRUE;
1919 while (again)
1920 {
1921 again = FALSE;
1922 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
1923 {
1924 asection *o;
1925
1926 if (! is_tic6x_elf (sub))
1927 continue;
1928
1929 elf_shdrp = elf_elfsections (sub);
1930 for (o = sub->sections; o != NULL; o = o->next)
1931 {
1932 Elf_Internal_Shdr *hdr;
1933
1934 hdr = &elf_section_data (o)->this_hdr;
1935 if (hdr->sh_type == SHT_C6000_UNWIND
1936 && hdr->sh_link
1937 && hdr->sh_link < elf_numsections (sub)
1938 && !o->gc_mark
1939 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
1940 {
1941 again = TRUE;
1942 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
1943 return FALSE;
1944 }
1945 }
1946 }
1947 }
1948
1949 return TRUE;
1950 }
1951
1952 /* Return TRUE if this is an unwinding table index. */
1953
1954 static bfd_boolean
is_tic6x_elf_unwind_section_name(const char * name)1955 is_tic6x_elf_unwind_section_name (const char *name)
1956 {
1957 return (CONST_STRNEQ (name, ELF_STRING_C6000_unwind)
1958 || CONST_STRNEQ (name, ELF_STRING_C6000_unwind_once));
1959 }
1960
1961
1962 /* Set the type and flags for an unwinding index table. We do this by
1963 the section name, which is a hack, but ought to work. */
1964
1965 static bfd_boolean
elf32_tic6x_fake_sections(bfd * abfd ATTRIBUTE_UNUSED,Elf_Internal_Shdr * hdr,asection * sec)1966 elf32_tic6x_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1967 Elf_Internal_Shdr *hdr, asection *sec)
1968 {
1969 const char * name;
1970
1971 name = bfd_get_section_name (abfd, sec);
1972
1973 if (is_tic6x_elf_unwind_section_name (name))
1974 {
1975 hdr->sh_type = SHT_C6000_UNWIND;
1976 hdr->sh_flags |= SHF_LINK_ORDER;
1977 }
1978
1979 return TRUE;
1980 }
1981
1982 /* Update the got entry reference counts for the section being removed. */
1983
1984 static bfd_boolean
elf32_tic6x_gc_sweep_hook(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)1985 elf32_tic6x_gc_sweep_hook (bfd *abfd,
1986 struct bfd_link_info *info,
1987 asection *sec,
1988 const Elf_Internal_Rela *relocs)
1989 {
1990 struct elf32_tic6x_link_hash_table *htab;
1991 Elf_Internal_Shdr *symtab_hdr;
1992 struct elf_link_hash_entry **sym_hashes;
1993 bfd_signed_vma *local_got_refcounts;
1994 const Elf_Internal_Rela *rel, *relend;
1995
1996 if (info->relocatable)
1997 return TRUE;
1998
1999 htab = elf32_tic6x_hash_table (info);
2000 if (htab == NULL)
2001 return FALSE;
2002
2003 elf_section_data (sec)->local_dynrel = NULL;
2004
2005 symtab_hdr = &elf_symtab_hdr (abfd);
2006 sym_hashes = elf_sym_hashes (abfd);
2007 local_got_refcounts = elf_local_got_refcounts (abfd);
2008
2009 relend = relocs + sec->reloc_count;
2010 for (rel = relocs; rel < relend; rel++)
2011 {
2012 unsigned long r_symndx;
2013 unsigned int r_type;
2014 struct elf_link_hash_entry *h = NULL;
2015
2016 r_symndx = ELF32_R_SYM (rel->r_info);
2017 if (r_symndx >= symtab_hdr->sh_info)
2018 {
2019 struct elf32_tic6x_link_hash_entry *eh;
2020 struct elf_dyn_relocs **pp;
2021 struct elf_dyn_relocs *p;
2022
2023 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2024 while (h->root.type == bfd_link_hash_indirect
2025 || h->root.type == bfd_link_hash_warning)
2026 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2027 eh = (struct elf32_tic6x_link_hash_entry *) h;
2028
2029 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2030 if (p->sec == sec)
2031 {
2032 /* Everything must go for SEC. */
2033 *pp = p->next;
2034 break;
2035 }
2036 }
2037
2038 r_type = ELF32_R_TYPE (rel->r_info);
2039
2040 switch (r_type)
2041 {
2042 case R_C6000_SBR_GOT_U15_W:
2043 case R_C6000_SBR_GOT_L16_W:
2044 case R_C6000_SBR_GOT_H16_W:
2045 case R_C6000_EHTYPE:
2046 if (h != NULL)
2047 {
2048 if (h->got.refcount > 0)
2049 h->got.refcount -= 1;
2050 }
2051 else if (local_got_refcounts != NULL)
2052 {
2053 if (local_got_refcounts[r_symndx] > 0)
2054 local_got_refcounts[r_symndx] -= 1;
2055 }
2056 break;
2057
2058 default:
2059 break;
2060 }
2061 }
2062
2063 return TRUE;
2064 }
2065
2066 /* Adjust a symbol defined by a dynamic object and referenced by a
2067 regular object. The current definition is in some section of the
2068 dynamic object, but we're not including those sections. We have to
2069 change the definition to something the rest of the link can
2070 understand. */
2071
2072 static bfd_boolean
elf32_tic6x_adjust_dynamic_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * h)2073 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info *info,
2074 struct elf_link_hash_entry *h)
2075 {
2076 struct elf32_tic6x_link_hash_table *htab;
2077 bfd *dynobj;
2078 asection *s;
2079
2080 dynobj = elf_hash_table (info)->dynobj;
2081
2082 /* Make sure we know what is going on here. */
2083 BFD_ASSERT (dynobj != NULL
2084 && (h->needs_plt
2085 || h->u.weakdef != NULL
2086 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
2087
2088 /* If this is a function, put it in the procedure linkage table. We
2089 will fill in the contents of the procedure linkage table later,
2090 when we know the address of the .got section. */
2091 if (h->type == STT_FUNC
2092 || h->needs_plt)
2093 {
2094 if (h->plt.refcount <= 0
2095 || SYMBOL_CALLS_LOCAL (info, h)
2096 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2097 && h->root.type == bfd_link_hash_undefweak))
2098 {
2099 /* This case can occur if we saw a PLT32 reloc in an input
2100 file, but the symbol was never referred to by a dynamic
2101 object, or if all references were garbage collected. In
2102 such a case, we don't actually need to build a procedure
2103 linkage table, and we can just do a PC32 reloc instead. */
2104 h->plt.offset = (bfd_vma) -1;
2105 h->needs_plt = 0;
2106 }
2107
2108 return TRUE;
2109 }
2110
2111 /* If this is a weak symbol, and there is a real definition, the
2112 processor independent code will have arranged for us to see the
2113 real definition first, and we can just use the same value. */
2114 if (h->u.weakdef != NULL)
2115 {
2116 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2117 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2118 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2119 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2120 h->non_got_ref = h->u.weakdef->non_got_ref;
2121 return TRUE;
2122 }
2123
2124 /* This is a reference to a symbol defined by a dynamic object which
2125 is not a function. */
2126
2127 /* If we are creating a shared library, we must presume that the
2128 only references to the symbol are via the global offset table.
2129 For such cases we need not do anything here; the relocations will
2130 be handled correctly by relocate_section. */
2131 if (info->shared)
2132 return TRUE;
2133
2134 /* If there are no references to this symbol that do not use the
2135 GOT, we don't need to generate a copy reloc. */
2136 if (!h->non_got_ref)
2137 return TRUE;
2138
2139 /* If -z nocopyreloc was given, we won't generate them either. */
2140 if (info->nocopyreloc)
2141 {
2142 h->non_got_ref = 0;
2143 return TRUE;
2144 }
2145
2146 htab = elf32_tic6x_hash_table (info);
2147 if (htab == NULL)
2148 return FALSE;
2149
2150 /* We must allocate the symbol in our .dynbss section, which will
2151 become part of the .bss section of the executable. There will be
2152 an entry for this symbol in the .dynsym section. The dynamic
2153 object will contain position independent code, so all references
2154 from the dynamic object to this symbol will go through the global
2155 offset table. The dynamic linker will use the .dynsym entry to
2156 determine the address it must put in the global offset table, so
2157 both the dynamic object and the regular object will refer to the
2158 same memory location for the variable. */
2159
2160 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2161 copy the initial value out of the dynamic object and into the
2162 runtime process image. */
2163 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2164 {
2165 htab->srelbss->size += sizeof (Elf32_External_Rela);
2166 h->needs_copy = 1;
2167 }
2168
2169 s = htab->sdynbss;
2170
2171 return _bfd_elf_adjust_dynamic_copy (h, s);
2172 }
2173
2174 static bfd_boolean
elf32_tic6x_new_section_hook(bfd * abfd,asection * sec)2175 elf32_tic6x_new_section_hook (bfd *abfd, asection *sec)
2176 {
2177 bfd_boolean ret;
2178
2179 /* Allocate target specific section data. */
2180 if (!sec->used_by_bfd)
2181 {
2182 _tic6x_elf_section_data *sdata;
2183 bfd_size_type amt = sizeof (*sdata);
2184
2185 sdata = (_tic6x_elf_section_data *) bfd_zalloc (abfd, amt);
2186 if (sdata == NULL)
2187 return FALSE;
2188 sec->used_by_bfd = sdata;
2189 }
2190
2191 ret = _bfd_elf_new_section_hook (abfd, sec);
2192 sec->use_rela_p = elf32_tic6x_tdata (abfd)->use_rela_p;
2193
2194 return ret;
2195 }
2196
2197 /* Return true if relocation REL against section SEC is a REL rather
2198 than RELA relocation. RELOCS is the first relocation in the
2199 section and ABFD is the bfd that contains SEC. */
2200
2201 static bfd_boolean
elf32_tic6x_rel_relocation_p(bfd * abfd,asection * sec,const Elf_Internal_Rela * relocs,const Elf_Internal_Rela * rel)2202 elf32_tic6x_rel_relocation_p (bfd *abfd, asection *sec,
2203 const Elf_Internal_Rela *relocs,
2204 const Elf_Internal_Rela *rel)
2205 {
2206 Elf_Internal_Shdr *rel_hdr;
2207 const struct elf_backend_data *bed;
2208
2209 /* To determine which flavor of relocation this is, we depend on the
2210 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2211 rel_hdr = elf_section_data (sec)->rel.hdr;
2212 if (rel_hdr == NULL)
2213 return FALSE;
2214 bed = get_elf_backend_data (abfd);
2215 return ((size_t) (rel - relocs)
2216 < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel);
2217 }
2218
2219 /* We need dynamic symbols for every section, since segments can
2220 relocate independently. */
2221 static bfd_boolean
elf32_tic6x_link_omit_section_dynsym(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,asection * p)2222 elf32_tic6x_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2223 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2224 asection *p)
2225 {
2226 switch (elf_section_data (p)->this_hdr.sh_type)
2227 {
2228 case SHT_PROGBITS:
2229 case SHT_NOBITS:
2230 /* If sh_type is yet undecided, assume it could be
2231 SHT_PROGBITS/SHT_NOBITS. */
2232 case SHT_NULL:
2233 return FALSE;
2234
2235 /* There shouldn't be section relative relocations
2236 against any other section. */
2237 default:
2238 return TRUE;
2239 }
2240 }
2241
2242 static bfd_boolean
elf32_tic6x_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)2243 elf32_tic6x_relocate_section (bfd *output_bfd,
2244 struct bfd_link_info *info,
2245 bfd *input_bfd,
2246 asection *input_section,
2247 bfd_byte *contents,
2248 Elf_Internal_Rela *relocs,
2249 Elf_Internal_Sym *local_syms,
2250 asection **local_sections)
2251 {
2252 struct elf32_tic6x_link_hash_table *htab;
2253 Elf_Internal_Shdr *symtab_hdr;
2254 struct elf_link_hash_entry **sym_hashes;
2255 bfd_vma *local_got_offsets;
2256 Elf_Internal_Rela *rel;
2257 Elf_Internal_Rela *relend;
2258 bfd_boolean ok = TRUE;
2259
2260 htab = elf32_tic6x_hash_table (info);
2261 symtab_hdr = & elf_symtab_hdr (input_bfd);
2262 sym_hashes = elf_sym_hashes (input_bfd);
2263 local_got_offsets = elf_local_got_offsets (input_bfd);
2264
2265 relend = relocs + input_section->reloc_count;
2266
2267 for (rel = relocs; rel < relend; rel ++)
2268 {
2269 int r_type;
2270 unsigned long r_symndx;
2271 arelent bfd_reloc;
2272 reloc_howto_type *howto;
2273 Elf_Internal_Sym *sym;
2274 asection *sec;
2275 struct elf_link_hash_entry *h;
2276 bfd_vma off, off2, relocation;
2277 bfd_boolean unresolved_reloc;
2278 bfd_reloc_status_type r;
2279 struct bfd_link_hash_entry *sbh;
2280 bfd_boolean is_rel;
2281
2282 r_type = ELF32_R_TYPE (rel->r_info);
2283 r_symndx = ELF32_R_SYM (rel->r_info);
2284
2285 is_rel = elf32_tic6x_rel_relocation_p (input_bfd, input_section,
2286 relocs, rel);
2287
2288 if (is_rel)
2289 elf32_tic6x_info_to_howto_rel (input_bfd, &bfd_reloc, rel);
2290 else
2291 elf32_tic6x_info_to_howto (input_bfd, &bfd_reloc, rel);
2292 howto = bfd_reloc.howto;
2293 if (howto == NULL)
2294 {
2295 bfd_set_error (bfd_error_bad_value);
2296 return FALSE;
2297 }
2298
2299 h = NULL;
2300 sym = NULL;
2301 sec = NULL;
2302 unresolved_reloc = FALSE;
2303
2304 if (r_symndx < symtab_hdr->sh_info)
2305 {
2306 sym = local_syms + r_symndx;
2307 sec = local_sections[r_symndx];
2308 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2309 }
2310 else
2311 {
2312 bfd_boolean warned, ignored;
2313
2314 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2315 r_symndx, symtab_hdr, sym_hashes,
2316 h, sec, relocation,
2317 unresolved_reloc, warned, ignored);
2318 }
2319
2320 if (sec != NULL && discarded_section (sec))
2321 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2322 rel, 1, relend, howto, 0, contents);
2323
2324 if (info->relocatable)
2325 {
2326 if (is_rel
2327 && sym != NULL
2328 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2329 {
2330 rel->r_addend = 0;
2331 relocation = sec->output_offset + sym->st_value;
2332 r = _bfd_relocate_contents (howto, input_bfd, relocation,
2333 contents + rel->r_offset);
2334 goto done_reloc;
2335 }
2336 continue;
2337 }
2338
2339 switch (r_type)
2340 {
2341 case R_C6000_NONE:
2342 case R_C6000_ALIGN:
2343 case R_C6000_FPHEAD:
2344 case R_C6000_NOCMP:
2345 /* No action needed. */
2346 continue;
2347
2348 case R_C6000_PCR_S21:
2349 /* A branch to an undefined weak symbol is turned into a
2350 "b .s2 B3" instruction if the existing insn is of the
2351 form "b .s2 symbol". */
2352 if (h ? h->root.type == bfd_link_hash_undefweak
2353 && (htab->elf.splt == NULL || h->plt.offset == (bfd_vma) -1)
2354 : r_symndx != STN_UNDEF && bfd_is_und_section (sec))
2355 {
2356 unsigned long oldval;
2357 oldval = bfd_get_32 (input_bfd, contents + rel->r_offset);
2358
2359 if ((oldval & 0x7e) == 0x12)
2360 {
2361 oldval &= 0xF0000001;
2362 bfd_put_32 (input_bfd, oldval | 0x000c0362,
2363 contents + rel->r_offset);
2364 r = bfd_reloc_ok;
2365 goto done_reloc;
2366 }
2367 }
2368
2369 case R_C6000_PCR_S12:
2370 case R_C6000_PCR_S10:
2371 case R_C6000_PCR_S7:
2372 if (h != NULL
2373 && h->plt.offset != (bfd_vma) -1
2374 && htab->elf.splt != NULL)
2375 {
2376 relocation = (htab->elf.splt->output_section->vma
2377 + htab->elf.splt->output_offset
2378 + h->plt.offset);
2379 }
2380
2381 /* Generic PC-relative handling produces a value relative to
2382 the exact location of the relocation. Adjust it to be
2383 relative to the start of the fetch packet instead. */
2384 relocation += (input_section->output_section->vma
2385 + input_section->output_offset
2386 + rel->r_offset) & 0x1f;
2387 unresolved_reloc = FALSE;
2388 break;
2389
2390 case R_C6000_PCR_H16:
2391 case R_C6000_PCR_L16:
2392 off = (input_section->output_section->vma
2393 + input_section->output_offset
2394 + rel->r_offset);
2395 /* These must be calculated as R = S - FP(FP(PC) - A).
2396 PC, here, is the value we just computed in OFF. RELOCATION
2397 has the address of S + A. */
2398 relocation -= rel->r_addend;
2399 off2 = ((off & ~(bfd_vma)0x1f) - rel->r_addend) & (bfd_vma)~0x1f;
2400 off2 = relocation - off2;
2401 relocation = off + off2;
2402 break;
2403
2404 case R_C6000_DSBT_INDEX:
2405 relocation = elf32_tic6x_hash_table (info)->params.dsbt_index;
2406 if (!info->shared || relocation != 0)
2407 break;
2408
2409 /* fall through */
2410 case R_C6000_ABS32:
2411 case R_C6000_ABS16:
2412 case R_C6000_ABS8:
2413 case R_C6000_ABS_S16:
2414 case R_C6000_ABS_L16:
2415 case R_C6000_ABS_H16:
2416 /* When generating a shared object or relocatable executable, these
2417 relocations are copied into the output file to be resolved at
2418 run time. */
2419 if ((info->shared || elf32_tic6x_using_dsbt (output_bfd))
2420 && (input_section->flags & SEC_ALLOC)
2421 && (h == NULL
2422 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2423 || h->root.type != bfd_link_hash_undefweak))
2424 {
2425 Elf_Internal_Rela outrel;
2426 bfd_boolean skip, relocate;
2427 asection *sreloc;
2428
2429 unresolved_reloc = FALSE;
2430
2431 sreloc = elf_section_data (input_section)->sreloc;
2432 BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
2433
2434 skip = FALSE;
2435 relocate = FALSE;
2436
2437 outrel.r_offset =
2438 _bfd_elf_section_offset (output_bfd, info, input_section,
2439 rel->r_offset);
2440 if (outrel.r_offset == (bfd_vma) -1)
2441 skip = TRUE;
2442 else if (outrel.r_offset == (bfd_vma) -2)
2443 skip = TRUE, relocate = TRUE;
2444 outrel.r_offset += (input_section->output_section->vma
2445 + input_section->output_offset);
2446
2447 if (skip)
2448 memset (&outrel, 0, sizeof outrel);
2449 else if (h != NULL
2450 && h->dynindx != -1
2451 && (!info->shared
2452 || !info->symbolic
2453 || !h->def_regular))
2454 {
2455 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2456 outrel.r_addend = rel->r_addend;
2457 }
2458 else
2459 {
2460 long indx;
2461
2462 outrel.r_addend = relocation + rel->r_addend;
2463
2464 if (bfd_is_abs_section (sec))
2465 indx = 0;
2466 else if (sec == NULL || sec->owner == NULL)
2467 {
2468 bfd_set_error (bfd_error_bad_value);
2469 return FALSE;
2470 }
2471 else
2472 {
2473 asection *osec;
2474
2475 osec = sec->output_section;
2476 indx = elf_section_data (osec)->dynindx;
2477 outrel.r_addend -= osec->vma;
2478 BFD_ASSERT (indx != 0);
2479 }
2480
2481 outrel.r_info = ELF32_R_INFO (indx, r_type);
2482 }
2483
2484 elf32_tic6x_install_rela (output_bfd, sreloc, &outrel);
2485
2486 /* If this reloc is against an external symbol, we do not want to
2487 fiddle with the addend. Otherwise, we need to include the symbol
2488 value so that it becomes an addend for the dynamic reloc. */
2489 if (! relocate)
2490 continue;
2491 }
2492
2493 /* Generic logic OK. */
2494 break;
2495
2496 case R_C6000_SBR_U15_B:
2497 case R_C6000_SBR_U15_H:
2498 case R_C6000_SBR_U15_W:
2499 case R_C6000_SBR_S16:
2500 case R_C6000_SBR_L16_B:
2501 case R_C6000_SBR_L16_H:
2502 case R_C6000_SBR_L16_W:
2503 case R_C6000_SBR_H16_B:
2504 case R_C6000_SBR_H16_H:
2505 case R_C6000_SBR_H16_W:
2506 sbh = bfd_link_hash_lookup (info->hash, "__c6xabi_DSBT_BASE",
2507 FALSE, FALSE, TRUE);
2508 if (sbh != NULL
2509 && (sbh->type == bfd_link_hash_defined
2510 || sbh->type == bfd_link_hash_defweak))
2511 {
2512 if (h ? (h->root.type == bfd_link_hash_undefweak
2513 && (htab->elf.splt == NULL
2514 || h->plt.offset == (bfd_vma) -1))
2515 : r_symndx != STN_UNDEF && bfd_is_und_section (sec))
2516 relocation = 0;
2517 else
2518 relocation -= (sbh->u.def.value
2519 + sbh->u.def.section->output_section->vma
2520 + sbh->u.def.section->output_offset);
2521 }
2522 else
2523 {
2524 (*_bfd_error_handler) (_("%B: SB-relative relocation but "
2525 "__c6xabi_DSBT_BASE not defined"),
2526 input_bfd);
2527 ok = FALSE;
2528 continue;
2529 }
2530 break;
2531
2532 case R_C6000_SBR_GOT_U15_W:
2533 case R_C6000_SBR_GOT_L16_W:
2534 case R_C6000_SBR_GOT_H16_W:
2535 case R_C6000_EHTYPE:
2536 /* Relocation is to the entry for this symbol in the global
2537 offset table. */
2538 if (htab->elf.sgot == NULL)
2539 abort ();
2540
2541 if (h != NULL)
2542 {
2543 bfd_boolean dyn;
2544
2545 off = h->got.offset;
2546 dyn = htab->elf.dynamic_sections_created;
2547 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2548 || (info->shared
2549 && SYMBOL_REFERENCES_LOCAL (info, h))
2550 || (ELF_ST_VISIBILITY (h->other)
2551 && h->root.type == bfd_link_hash_undefweak))
2552 {
2553 /* This is actually a static link, or it is a
2554 -Bsymbolic link and the symbol is defined
2555 locally, or the symbol was forced to be local
2556 because of a version file. We must initialize
2557 this entry in the global offset table. Since the
2558 offset must always be a multiple of 4, we use the
2559 least significant bit to record whether we have
2560 initialized it already.
2561
2562 When doing a dynamic link, we create a .rel.got
2563 relocation entry to initialize the value. This
2564 is done in the finish_dynamic_symbol routine. */
2565 if ((off & 1) != 0)
2566 off &= ~1;
2567 else
2568 {
2569 bfd_put_32 (output_bfd, relocation,
2570 htab->elf.sgot->contents + off);
2571 h->got.offset |= 1;
2572
2573 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
2574 h)
2575 && !(ELF_ST_VISIBILITY (h->other)
2576 && h->root.type == bfd_link_hash_undefweak))
2577 elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec,
2578 off);
2579 }
2580 }
2581 else
2582 unresolved_reloc = FALSE;
2583 }
2584 else
2585 {
2586 if (local_got_offsets == NULL)
2587 abort ();
2588
2589 off = local_got_offsets[r_symndx];
2590
2591 /* The offset must always be a multiple of 4. We use
2592 the least significant bit to record whether we have
2593 already generated the necessary reloc. */
2594 if ((off & 1) != 0)
2595 off &= ~1;
2596 else
2597 {
2598 bfd_put_32 (output_bfd, relocation,
2599 htab->elf.sgot->contents + off);
2600
2601 if (info->shared || elf32_tic6x_using_dsbt (output_bfd))
2602 elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec, off);
2603
2604 local_got_offsets[r_symndx] |= 1;
2605 }
2606 }
2607
2608 if (off >= (bfd_vma) -2)
2609 abort ();
2610
2611 if (htab->dsbt)
2612 relocation = (htab->elf.sgot->output_section->vma
2613 + htab->elf.sgot->output_offset + off
2614 - htab->dsbt->output_section->vma
2615 - htab->dsbt->output_offset);
2616 else
2617 relocation = (htab->elf.sgot->output_section->vma
2618 + htab->elf.sgot->output_offset + off
2619 - htab->elf.sgotplt->output_section->vma
2620 - htab->elf.sgotplt->output_offset);
2621
2622 if (rel->r_addend != 0)
2623 {
2624 /* We can't do anything for a relocation which is against
2625 a symbol *plus offset*. GOT holds relocations for
2626 symbols. Make this an error; the compiler isn't
2627 allowed to pass us these kinds of things. */
2628 if (h == NULL)
2629 (*_bfd_error_handler)
2630 (_("%B, section %A: relocation %s with non-zero addend %d"
2631 " against local symbol"),
2632 input_bfd,
2633 input_section,
2634 elf32_tic6x_howto_table[r_type].name,
2635 rel->r_addend);
2636 else
2637 (*_bfd_error_handler)
2638 (_("%B, section %A: relocation %s with non-zero addend %d"
2639 " against symbol `%s'"),
2640 input_bfd,
2641 input_section,
2642 elf32_tic6x_howto_table[r_type].name,
2643 rel->r_addend,
2644 h->root.root.string[0] != '\0' ? h->root.root.string
2645 : _("[whose name is lost]"));
2646
2647 bfd_set_error (bfd_error_bad_value);
2648 return FALSE;
2649 }
2650 break;
2651
2652 case R_C6000_PREL31:
2653 if (h != NULL
2654 && h->plt.offset != (bfd_vma) -1
2655 && htab->elf.splt != NULL)
2656 {
2657 relocation = (htab->elf.splt->output_section->vma
2658 + htab->elf.splt->output_offset
2659 + h->plt.offset);
2660 }
2661 break;
2662
2663 case R_C6000_COPY:
2664 /* Invalid in relocatable object. */
2665 default:
2666 /* Unknown relocation. */
2667 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2668 input_bfd, r_type);
2669 ok = FALSE;
2670 continue;
2671 }
2672
2673 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2674 contents, rel->r_offset,
2675 relocation, rel->r_addend);
2676
2677 done_reloc:
2678 if (r == bfd_reloc_ok
2679 && howto->complain_on_overflow == complain_overflow_bitfield)
2680 {
2681 /* Generic overflow handling accepts cases the ABI says
2682 should be rejected for R_C6000_ABS16 and
2683 R_C6000_ABS8. */
2684 bfd_vma value = (relocation + rel->r_addend) & 0xffffffff;
2685 bfd_vma sbit = 1 << (howto->bitsize - 1);
2686 bfd_vma sbits = (-(bfd_vma) sbit) & 0xffffffff;
2687 bfd_vma value_sbits = value & sbits;
2688
2689 if (value_sbits != 0
2690 && value_sbits != sbit
2691 && value_sbits != sbits)
2692 r = bfd_reloc_overflow;
2693 }
2694
2695 if (r != bfd_reloc_ok)
2696 {
2697 const char *name;
2698 const char *error_message;
2699
2700 if (h != NULL)
2701 name = h->root.root.string;
2702 else
2703 {
2704 name = bfd_elf_string_from_elf_section (input_bfd,
2705 symtab_hdr->sh_link,
2706 sym->st_name);
2707 if (name == NULL)
2708 return FALSE;
2709 if (*name == '\0')
2710 name = bfd_section_name (input_bfd, sec);
2711 }
2712
2713 switch (r)
2714 {
2715 case bfd_reloc_overflow:
2716 /* If the overflowing reloc was to an undefined symbol,
2717 we have already printed one error message and there
2718 is no point complaining again. */
2719 if ((! h ||
2720 h->root.type != bfd_link_hash_undefined)
2721 && (!((*info->callbacks->reloc_overflow)
2722 (info, (h ? &h->root : NULL), name, howto->name,
2723 (bfd_vma) 0, input_bfd, input_section,
2724 rel->r_offset))))
2725 return FALSE;
2726 break;
2727
2728 case bfd_reloc_undefined:
2729 if (!((*info->callbacks->undefined_symbol)
2730 (info, name, input_bfd, input_section,
2731 rel->r_offset, TRUE)))
2732 return FALSE;
2733 break;
2734
2735 case bfd_reloc_outofrange:
2736 error_message = _("out of range");
2737 goto common_error;
2738
2739 case bfd_reloc_notsupported:
2740 error_message = _("unsupported relocation");
2741 goto common_error;
2742
2743 case bfd_reloc_dangerous:
2744 error_message = _("dangerous relocation");
2745 goto common_error;
2746
2747 default:
2748 error_message = _("unknown error");
2749 /* Fall through. */
2750
2751 common_error:
2752 BFD_ASSERT (error_message != NULL);
2753 if (!((*info->callbacks->reloc_dangerous)
2754 (info, error_message, input_bfd, input_section,
2755 rel->r_offset)))
2756 return FALSE;
2757 break;
2758 }
2759 }
2760 }
2761
2762 return ok;
2763 }
2764
2765
2766 /* Look through the relocs for a section during the first phase, and
2767 calculate needed space in the global offset table, procedure linkage
2768 table, and dynamic reloc sections. */
2769
2770 static bfd_boolean
elf32_tic6x_check_relocs(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)2771 elf32_tic6x_check_relocs (bfd *abfd, struct bfd_link_info *info,
2772 asection *sec, const Elf_Internal_Rela *relocs)
2773 {
2774 struct elf32_tic6x_link_hash_table *htab;
2775 Elf_Internal_Shdr *symtab_hdr;
2776 struct elf_link_hash_entry **sym_hashes;
2777 const Elf_Internal_Rela *rel;
2778 const Elf_Internal_Rela *rel_end;
2779 asection *sreloc;
2780
2781 if (info->relocatable)
2782 return TRUE;
2783
2784 htab = elf32_tic6x_hash_table (info);
2785 symtab_hdr = &elf_symtab_hdr (abfd);
2786 sym_hashes = elf_sym_hashes (abfd);
2787
2788 /* Create dynamic sections for relocatable executables so that we can
2789 copy relocations. */
2790 if ((info->shared || elf32_tic6x_using_dsbt (abfd))
2791 && ! htab->elf.dynamic_sections_created)
2792 {
2793 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
2794 return FALSE;
2795 }
2796
2797 sreloc = NULL;
2798
2799 rel_end = relocs + sec->reloc_count;
2800 for (rel = relocs; rel < rel_end; rel++)
2801 {
2802 unsigned int r_type;
2803 unsigned long r_symndx;
2804 struct elf_link_hash_entry *h;
2805 Elf_Internal_Sym *isym;
2806
2807 r_symndx = ELF32_R_SYM (rel->r_info);
2808 r_type = ELF32_R_TYPE (rel->r_info);
2809
2810 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
2811 {
2812 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
2813 abfd,
2814 r_symndx);
2815 return FALSE;
2816 }
2817
2818 if (r_symndx < symtab_hdr->sh_info)
2819 {
2820 /* A local symbol. */
2821 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2822 abfd, r_symndx);
2823 if (isym == NULL)
2824 return FALSE;
2825 h = NULL;
2826 }
2827 else
2828 {
2829 isym = NULL;
2830 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2831 while (h->root.type == bfd_link_hash_indirect
2832 || h->root.type == bfd_link_hash_warning)
2833 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2834
2835 /* PR15323, ref flags aren't set for references in the same
2836 object. */
2837 h->root.non_ir_ref = 1;
2838 }
2839
2840 switch (r_type)
2841 {
2842 case R_C6000_PCR_S21:
2843 case R_C6000_PREL31:
2844 /* This symbol requires a procedure linkage table entry. We
2845 actually build the entry in adjust_dynamic_symbol,
2846 because this might be a case of linking PIC code which is
2847 never referenced by a dynamic object, in which case we
2848 don't need to generate a procedure linkage table entry
2849 after all. */
2850
2851 /* If this is a local symbol, we resolve it directly without
2852 creating a procedure linkage table entry. */
2853 if (h == NULL)
2854 continue;
2855
2856 h->needs_plt = 1;
2857 h->plt.refcount += 1;
2858 break;
2859
2860 case R_C6000_SBR_GOT_U15_W:
2861 case R_C6000_SBR_GOT_L16_W:
2862 case R_C6000_SBR_GOT_H16_W:
2863 case R_C6000_EHTYPE:
2864 /* This symbol requires a global offset table entry. */
2865 if (h != NULL)
2866 {
2867 h->got.refcount += 1;
2868 }
2869 else
2870 {
2871 bfd_signed_vma *local_got_refcounts;
2872
2873 /* This is a global offset table entry for a local symbol. */
2874 local_got_refcounts = elf_local_got_refcounts (abfd);
2875 if (local_got_refcounts == NULL)
2876 {
2877 bfd_size_type size;
2878
2879 size = symtab_hdr->sh_info;
2880 size *= (sizeof (bfd_signed_vma)
2881 + sizeof (bfd_vma) + sizeof(char));
2882 local_got_refcounts = bfd_zalloc (abfd, size);
2883 if (local_got_refcounts == NULL)
2884 return FALSE;
2885 elf_local_got_refcounts (abfd) = local_got_refcounts;
2886 }
2887 local_got_refcounts[r_symndx] += 1;
2888 }
2889
2890 if (htab->elf.sgot == NULL)
2891 {
2892 if (htab->elf.dynobj == NULL)
2893 htab->elf.dynobj = abfd;
2894 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
2895 return FALSE;
2896 }
2897 break;
2898
2899 case R_C6000_DSBT_INDEX:
2900 /* We'd like to check for nonzero dsbt_index here, but it's
2901 set up only after check_relocs is called. Instead, we
2902 store the number of R_C6000_DSBT_INDEX relocs in the
2903 pc_count field, and potentially discard the extra space
2904 in elf32_tic6x_allocate_dynrelocs. */
2905 if (!info->shared)
2906 break;
2907
2908 /* fall through */
2909 case R_C6000_ABS32:
2910 case R_C6000_ABS16:
2911 case R_C6000_ABS8:
2912 case R_C6000_ABS_S16:
2913 case R_C6000_ABS_L16:
2914 case R_C6000_ABS_H16:
2915 /* If we are creating a shared library, and this is a reloc
2916 against a global symbol, or a non PC relative reloc
2917 against a local symbol, then we need to copy the reloc
2918 into the shared library. However, if we are linking with
2919 -Bsymbolic, we do not need to copy a reloc against a
2920 global symbol which is defined in an object we are
2921 including in the link (i.e., DEF_REGULAR is set). At
2922 this point we have not seen all the input files, so it is
2923 possible that DEF_REGULAR is not set now but will be set
2924 later (it is never cleared). In case of a weak definition,
2925 DEF_REGULAR may be cleared later by a strong definition in
2926 a shared library. We account for that possibility below by
2927 storing information in the relocs_copied field of the hash
2928 table entry. A similar situation occurs when creating
2929 shared libraries and symbol visibility changes render the
2930 symbol local.
2931
2932 If on the other hand, we are creating an executable, we
2933 may need to keep relocations for symbols satisfied by a
2934 dynamic library if we manage to avoid copy relocs for the
2935 symbol. */
2936 if ((info->shared || elf32_tic6x_using_dsbt (abfd))
2937 && (sec->flags & SEC_ALLOC) != 0)
2938 {
2939 struct elf_dyn_relocs *p;
2940 struct elf_dyn_relocs **head;
2941
2942 /* We must copy these reloc types into the output file.
2943 Create a reloc section in dynobj and make room for
2944 this reloc. */
2945 if (sreloc == NULL)
2946 {
2947 if (htab->elf.dynobj == NULL)
2948 htab->elf.dynobj = abfd;
2949
2950 sreloc = _bfd_elf_make_dynamic_reloc_section
2951 (sec, htab->elf.dynobj, 2, abfd, /*rela? */ TRUE);
2952
2953 if (sreloc == NULL)
2954 return FALSE;
2955 }
2956
2957 /* If this is a global symbol, we count the number of
2958 relocations we need for this symbol. */
2959 if (h != NULL)
2960 {
2961 head = &((struct elf32_tic6x_link_hash_entry *) h)->dyn_relocs;
2962 }
2963 else
2964 {
2965 /* Track dynamic relocs needed for local syms too.
2966 We really need local syms available to do this
2967 easily. Oh well. */
2968 void **vpp;
2969 asection *s;
2970
2971 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2972 if (s == NULL)
2973 s = sec;
2974
2975 vpp = &elf_section_data (s)->local_dynrel;
2976 head = (struct elf_dyn_relocs **)vpp;
2977 }
2978
2979 p = *head;
2980 if (p == NULL || p->sec != sec)
2981 {
2982 bfd_size_type amt = sizeof *p;
2983 p = bfd_alloc (htab->elf.dynobj, amt);
2984 if (p == NULL)
2985 return FALSE;
2986 p->next = *head;
2987 *head = p;
2988 p->sec = sec;
2989 p->count = 0;
2990 p->pc_count = 0;
2991 }
2992
2993 p->count += 1;
2994 if (r_type == R_C6000_DSBT_INDEX)
2995 p->pc_count += 1;
2996 }
2997 break;
2998
2999 case R_C6000_SBR_U15_B:
3000 case R_C6000_SBR_U15_H:
3001 case R_C6000_SBR_U15_W:
3002 case R_C6000_SBR_S16:
3003 case R_C6000_SBR_L16_B:
3004 case R_C6000_SBR_L16_H:
3005 case R_C6000_SBR_L16_W:
3006 case R_C6000_SBR_H16_B:
3007 case R_C6000_SBR_H16_H:
3008 case R_C6000_SBR_H16_W:
3009 if (h != NULL && info->executable)
3010 {
3011 /* For B14-relative addresses, we might need a copy
3012 reloc. */
3013 h->non_got_ref = 1;
3014 }
3015 break;
3016
3017 default:
3018 break;
3019 }
3020 }
3021
3022 return TRUE;
3023 }
3024
3025 static bfd_boolean
elf32_tic6x_add_symbol_hook(bfd * abfd,struct bfd_link_info * info ATTRIBUTE_UNUSED,Elf_Internal_Sym * sym,const char ** namep ATTRIBUTE_UNUSED,flagword * flagsp ATTRIBUTE_UNUSED,asection ** secp,bfd_vma * valp)3026 elf32_tic6x_add_symbol_hook (bfd *abfd,
3027 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3028 Elf_Internal_Sym *sym,
3029 const char **namep ATTRIBUTE_UNUSED,
3030 flagword *flagsp ATTRIBUTE_UNUSED,
3031 asection **secp,
3032 bfd_vma *valp)
3033 {
3034 switch (sym->st_shndx)
3035 {
3036 case SHN_TIC6X_SCOMMON:
3037 *secp = bfd_make_section_old_way (abfd, ".scommon");
3038 (*secp)->flags |= SEC_IS_COMMON;
3039 *valp = sym->st_size;
3040 (void) bfd_set_section_alignment (abfd, *secp, bfd_log2 (sym->st_value));
3041 break;
3042 }
3043
3044 return TRUE;
3045 }
3046
3047 static void
elf32_tic6x_symbol_processing(bfd * abfd ATTRIBUTE_UNUSED,asymbol * asym)3048 elf32_tic6x_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
3049 {
3050 elf_symbol_type *elfsym;
3051
3052 elfsym = (elf_symbol_type *) asym;
3053 switch (elfsym->internal_elf_sym.st_shndx)
3054 {
3055 case SHN_TIC6X_SCOMMON:
3056 if (tic6x_elf_scom_section.name == NULL)
3057 {
3058 /* Initialize the small common section. */
3059 tic6x_elf_scom_section.name = ".scommon";
3060 tic6x_elf_scom_section.flags = SEC_IS_COMMON;
3061 tic6x_elf_scom_section.output_section = &tic6x_elf_scom_section;
3062 tic6x_elf_scom_section.symbol = &tic6x_elf_scom_symbol;
3063 tic6x_elf_scom_section.symbol_ptr_ptr = &tic6x_elf_scom_symbol_ptr;
3064 tic6x_elf_scom_symbol.name = ".scommon";
3065 tic6x_elf_scom_symbol.flags = BSF_SECTION_SYM;
3066 tic6x_elf_scom_symbol.section = &tic6x_elf_scom_section;
3067 tic6x_elf_scom_symbol_ptr = &tic6x_elf_scom_symbol;
3068 }
3069 asym->section = &tic6x_elf_scom_section;
3070 asym->value = elfsym->internal_elf_sym.st_size;
3071 break;
3072 }
3073 }
3074
3075 static int
elf32_tic6x_link_output_symbol_hook(struct bfd_link_info * info ATTRIBUTE_UNUSED,const char * name ATTRIBUTE_UNUSED,Elf_Internal_Sym * sym,asection * input_sec,struct elf_link_hash_entry * h ATTRIBUTE_UNUSED)3076 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
3077 const char *name ATTRIBUTE_UNUSED,
3078 Elf_Internal_Sym *sym,
3079 asection *input_sec,
3080 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
3081 {
3082 /* If we see a common symbol, which implies a relocatable link, then
3083 if a symbol was small common in an input file, mark it as small
3084 common in the output file. */
3085 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0)
3086 sym->st_shndx = SHN_TIC6X_SCOMMON;
3087
3088 return 1;
3089 }
3090
3091 static bfd_boolean
elf32_tic6x_section_from_bfd_section(bfd * abfd ATTRIBUTE_UNUSED,asection * sec,int * retval)3092 elf32_tic6x_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
3093 asection *sec,
3094 int *retval)
3095 {
3096 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
3097 {
3098 *retval = SHN_TIC6X_SCOMMON;
3099 return TRUE;
3100 }
3101
3102 return FALSE;
3103 }
3104
3105 /* Allocate space in .plt, .got and associated reloc sections for
3106 dynamic relocs. */
3107
3108 static bfd_boolean
elf32_tic6x_allocate_dynrelocs(struct elf_link_hash_entry * h,void * inf)3109 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3110 {
3111 struct bfd_link_info *info;
3112 struct elf32_tic6x_link_hash_table *htab;
3113 struct elf32_tic6x_link_hash_entry *eh;
3114 struct elf_dyn_relocs *p;
3115
3116 if (h->root.type == bfd_link_hash_indirect)
3117 return TRUE;
3118
3119 eh = (struct elf32_tic6x_link_hash_entry *) h;
3120 info = (struct bfd_link_info *) inf;
3121 htab = elf32_tic6x_hash_table (info);
3122
3123 if (htab->elf.dynamic_sections_created && h->plt.refcount > 0)
3124 {
3125 /* Make sure this symbol is output as a dynamic symbol.
3126 Undefined weak syms won't yet be marked as dynamic. */
3127 if (h->dynindx == -1 && !h->forced_local)
3128 {
3129 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3130 return FALSE;
3131 }
3132
3133 if (info->shared
3134 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
3135 {
3136 asection *s = htab->elf.splt;
3137
3138 /* If this is the first .plt entry, make room for the special
3139 first entry. */
3140 if (s->size == 0)
3141 s->size += PLT_ENTRY_SIZE;
3142
3143 h->plt.offset = s->size;
3144
3145 /* If this symbol is not defined in a regular file, and we are
3146 not generating a shared library, then set the symbol to this
3147 location in the .plt. This is required to make function
3148 pointers compare as equal between the normal executable and
3149 the shared library. */
3150 if (! info->shared && !h->def_regular)
3151 {
3152 h->root.u.def.section = s;
3153 h->root.u.def.value = h->plt.offset;
3154 }
3155
3156 /* Make room for this entry. */
3157 s->size += PLT_ENTRY_SIZE;
3158 /* We also need to make an entry in the .got.plt section, which
3159 will be placed in the .got section by the linker script. */
3160 htab->elf.sgotplt->size += 4;
3161 /* We also need to make an entry in the .rel.plt section. */
3162 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
3163 }
3164 else
3165 {
3166 h->plt.offset = (bfd_vma) -1;
3167 h->needs_plt = 0;
3168 }
3169 }
3170 else
3171 {
3172 h->plt.offset = (bfd_vma) -1;
3173 h->needs_plt = 0;
3174 }
3175
3176 if (h->got.refcount > 0)
3177 {
3178 asection *s;
3179
3180 /* Make sure this symbol is output as a dynamic symbol.
3181 Undefined weak syms won't yet be marked as dynamic. */
3182 if (h->dynindx == -1
3183 && !h->forced_local)
3184 {
3185 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3186 return FALSE;
3187 }
3188
3189 s = htab->elf.sgot;
3190 h->got.offset = s->size;
3191 s->size += 4;
3192
3193 if (!(ELF_ST_VISIBILITY (h->other)
3194 && h->root.type == bfd_link_hash_undefweak))
3195 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
3196 }
3197 else
3198 h->got.offset = (bfd_vma) -1;
3199
3200 if (eh->dyn_relocs == NULL)
3201 return TRUE;
3202
3203 /* Discard relocs on undefined weak syms with non-default
3204 visibility. */
3205 if (info->shared || elf32_tic6x_using_dsbt (htab->obfd))
3206 {
3207 /* We use the pc_count field to hold the number of
3208 R_C6000_DSBT_INDEX relocs. */
3209 if (htab->params.dsbt_index != 0)
3210 {
3211 struct elf_dyn_relocs **pp;
3212
3213 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3214 {
3215 p->count -= p->pc_count;
3216 p->pc_count = 0;
3217 if (p->count == 0)
3218 *pp = p->next;
3219 else
3220 pp = &p->next;
3221 }
3222 }
3223
3224 if (eh->dyn_relocs != NULL
3225 && h->root.type == bfd_link_hash_undefweak)
3226 {
3227 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3228 eh->dyn_relocs = NULL;
3229
3230 /* Make sure undefined weak symbols are output as a dynamic
3231 symbol in PIEs. */
3232 else if (h->dynindx == -1
3233 && !h->forced_local)
3234 {
3235 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3236 return FALSE;
3237 }
3238 }
3239 }
3240
3241 /* Finally, allocate space. */
3242 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3243 {
3244 asection *sreloc;
3245
3246 sreloc = elf_section_data (p->sec)->sreloc;
3247
3248 BFD_ASSERT (sreloc != NULL);
3249 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3250 }
3251
3252 return TRUE;
3253 }
3254
3255 /* Find any dynamic relocs that apply to read-only sections. */
3256
3257 static bfd_boolean
elf32_tic6x_readonly_dynrelocs(struct elf_link_hash_entry * h,void * inf)3258 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3259 {
3260 struct elf32_tic6x_link_hash_entry *eh;
3261 struct elf_dyn_relocs *p;
3262
3263 eh = (struct elf32_tic6x_link_hash_entry *) h;
3264 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3265 {
3266 asection *s = p->sec->output_section;
3267
3268 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3269 {
3270 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3271
3272 info->flags |= DF_TEXTREL;
3273
3274 /* Not an error, just cut short the traversal. */
3275 return FALSE;
3276 }
3277 }
3278 return TRUE;
3279 }
3280
3281 /* Set the sizes of the dynamic sections. */
3282
3283 static bfd_boolean
elf32_tic6x_size_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)3284 elf32_tic6x_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
3285 {
3286 struct elf32_tic6x_link_hash_table *htab;
3287 bfd *dynobj;
3288 asection *s;
3289 bfd_boolean relocs;
3290 bfd *ibfd;
3291
3292 htab = elf32_tic6x_hash_table (info);
3293 dynobj = htab->elf.dynobj;
3294 if (dynobj == NULL)
3295 abort ();
3296
3297 if (htab->elf.dynamic_sections_created)
3298 {
3299 /* Set the contents of the .interp section to the interpreter. */
3300 if (info->executable)
3301 {
3302 s = bfd_get_linker_section (dynobj, ".interp");
3303 if (s == NULL)
3304 abort ();
3305 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3306 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3307 }
3308 }
3309
3310 /* Set up .got offsets for local syms, and space for local dynamic
3311 relocs. */
3312 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3313 {
3314 bfd_signed_vma *local_got;
3315 bfd_signed_vma *end_local_got;
3316 bfd_size_type locsymcount;
3317 Elf_Internal_Shdr *symtab_hdr;
3318 asection *srel;
3319
3320 for (s = ibfd->sections; s != NULL; s = s->next)
3321 {
3322 struct elf_dyn_relocs *p;
3323
3324 for (p = ((struct elf_dyn_relocs *)
3325 elf_section_data (s)->local_dynrel);
3326 p != NULL;
3327 p = p->next)
3328 {
3329 if (!bfd_is_abs_section (p->sec)
3330 && bfd_is_abs_section (p->sec->output_section))
3331 {
3332 /* Input section has been discarded, either because
3333 it is a copy of a linkonce section or due to
3334 linker script /DISCARD/, so we'll be discarding
3335 the relocs too. */
3336 }
3337 else if (p->count != 0)
3338 {
3339 srel = elf_section_data (p->sec)->sreloc;
3340 srel->size += p->count * sizeof (Elf32_External_Rela);
3341 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3342 info->flags |= DF_TEXTREL;
3343 }
3344 }
3345 }
3346
3347 local_got = elf_local_got_refcounts (ibfd);
3348 if (!local_got)
3349 continue;
3350
3351 symtab_hdr = &elf_symtab_hdr (ibfd);
3352 locsymcount = symtab_hdr->sh_info;
3353 end_local_got = local_got + locsymcount;
3354 s = htab->elf.sgot;
3355 srel = htab->elf.srelgot;
3356 for (; local_got < end_local_got; ++local_got)
3357 {
3358 if (*local_got > 0)
3359 {
3360 *local_got = s->size;
3361 s->size += 4;
3362
3363 if (info->shared || elf32_tic6x_using_dsbt (output_bfd))
3364 {
3365 srel->size += sizeof (Elf32_External_Rela);
3366 }
3367 }
3368 else
3369 *local_got = (bfd_vma) -1;
3370 }
3371 }
3372
3373 /* Allocate global sym .plt and .got entries, and space for global
3374 sym dynamic relocs. */
3375 elf_link_hash_traverse (&htab->elf, elf32_tic6x_allocate_dynrelocs, info);
3376
3377 /* We now have determined the sizes of the various dynamic sections.
3378 Allocate memory for them. */
3379 relocs = FALSE;
3380 for (s = dynobj->sections; s != NULL; s = s->next)
3381 {
3382 bfd_boolean strip_section = TRUE;
3383
3384 if ((s->flags & SEC_LINKER_CREATED) == 0)
3385 continue;
3386
3387 if (s == htab->dsbt)
3388 s->size = 4 * htab->params.dsbt_size;
3389 else if (s == htab->elf.splt
3390 || s == htab->elf.sgot
3391 || s == htab->elf.sgotplt
3392 || s == htab->sdynbss)
3393 {
3394 /* Strip this section if we don't need it; see the
3395 comment below. */
3396 /* We'd like to strip these sections if they aren't needed, but if
3397 we've exported dynamic symbols from them we must leave them.
3398 It's too late to tell BFD to get rid of the symbols. */
3399
3400 if (htab->elf.hplt != NULL)
3401 strip_section = FALSE;
3402
3403 /* Round up the size of the PLT section to a multiple of 32. */
3404 if (s == htab->elf.splt && s->size > 0)
3405 s->size = (s->size + 31) & ~(bfd_vma)31;
3406 }
3407 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
3408 {
3409 if (s->size != 0
3410 && s != htab->elf.srelplt)
3411 relocs = TRUE;
3412
3413 /* We use the reloc_count field as a counter if we need
3414 to copy relocs into the output file. */
3415 s->reloc_count = 0;
3416 }
3417 else
3418 {
3419 /* It's not one of our sections, so don't allocate space. */
3420 continue;
3421 }
3422
3423 if (s->size == 0)
3424 {
3425 /* If we don't need this section, strip it from the
3426 output file. This is mostly to handle .rel.bss and
3427 .rel.plt. We must create both sections in
3428 create_dynamic_sections, because they must be created
3429 before the linker maps input sections to output
3430 sections. The linker does that before
3431 adjust_dynamic_symbol is called, and it is that
3432 function which decides whether anything needs to go
3433 into these sections. */
3434 if (strip_section)
3435 s->flags |= SEC_EXCLUDE;
3436 continue;
3437 }
3438
3439 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3440 continue;
3441
3442 /* Allocate memory for the section contents. We use bfd_zalloc
3443 here in case unused entries are not reclaimed before the
3444 section's contents are written out. This should not happen,
3445 but this way if it does, we get a R_C6000_NONE reloc instead
3446 of garbage. */
3447 s->contents = bfd_zalloc (dynobj, s->size);
3448 if (s->contents == NULL)
3449 return FALSE;
3450 }
3451
3452 if (htab->elf.dynamic_sections_created)
3453 {
3454 /* Add some entries to the .dynamic section. We fill in the
3455 values later, in elf32_tic6x_finish_dynamic_sections, but we
3456 must add the entries now so that we get the correct size for
3457 the .dynamic section. The DT_DEBUG entry is filled in by the
3458 dynamic linker and used by the debugger. */
3459 #define add_dynamic_entry(TAG, VAL) \
3460 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3461
3462 if (info->executable)
3463 {
3464 if (!add_dynamic_entry (DT_DEBUG, 0))
3465 return FALSE;
3466 }
3467
3468 if (!add_dynamic_entry (DT_C6000_DSBT_BASE, 0)
3469 || !add_dynamic_entry (DT_C6000_DSBT_SIZE, htab->params.dsbt_size)
3470 || !add_dynamic_entry (DT_C6000_DSBT_INDEX,
3471 htab->params.dsbt_index))
3472 return FALSE;
3473
3474 if (htab->elf.splt->size != 0)
3475 {
3476 if (!add_dynamic_entry (DT_PLTGOT, 0)
3477 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3478 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3479 || !add_dynamic_entry (DT_JMPREL, 0))
3480 return FALSE;
3481 }
3482
3483 if (relocs)
3484 {
3485 if (!add_dynamic_entry (DT_RELA, 0)
3486 || !add_dynamic_entry (DT_RELASZ, 0)
3487 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3488 return FALSE;
3489
3490 /* If any dynamic relocs apply to a read-only section,
3491 then we need a DT_TEXTREL entry. */
3492 if ((info->flags & DF_TEXTREL) == 0)
3493 elf_link_hash_traverse (&htab->elf,
3494 elf32_tic6x_readonly_dynrelocs, info);
3495
3496 if ((info->flags & DF_TEXTREL) != 0)
3497 {
3498 if (!add_dynamic_entry (DT_TEXTREL, 0))
3499 return FALSE;
3500 }
3501 }
3502 }
3503 #undef add_dynamic_entry
3504
3505 return TRUE;
3506 }
3507
3508 /* This function is called after all the input files have been read,
3509 and the input sections have been assigned to output sections. */
3510
3511 static bfd_boolean
elf32_tic6x_always_size_sections(bfd * output_bfd,struct bfd_link_info * info)3512 elf32_tic6x_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
3513 {
3514 if (elf32_tic6x_using_dsbt (output_bfd) && !info->relocatable
3515 && !bfd_elf_stack_segment_size (output_bfd, info,
3516 "__stacksize", DEFAULT_STACK_SIZE))
3517 return FALSE;
3518
3519 return TRUE;
3520 }
3521
3522 static bfd_boolean
elf32_tic6x_finish_dynamic_sections(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info)3523 elf32_tic6x_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3524 struct bfd_link_info *info)
3525 {
3526 struct elf32_tic6x_link_hash_table *htab;
3527 bfd *dynobj;
3528 asection *sdyn;
3529
3530 htab = elf32_tic6x_hash_table (info);
3531 dynobj = htab->elf.dynobj;
3532 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3533
3534 if (elf_hash_table (info)->dynamic_sections_created)
3535 {
3536 Elf32_External_Dyn * dyncon;
3537 Elf32_External_Dyn * dynconend;
3538
3539 BFD_ASSERT (sdyn != NULL);
3540
3541 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3542 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3543
3544 for (; dyncon < dynconend; dyncon++)
3545 {
3546 Elf_Internal_Dyn dyn;
3547 asection *s;
3548
3549 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3550
3551 switch (dyn.d_tag)
3552 {
3553 default:
3554 break;
3555
3556 case DT_C6000_DSBT_BASE:
3557 s = htab->dsbt;
3558 dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset);
3559 break;
3560
3561 case DT_PLTGOT:
3562 s = htab->elf.sgotplt;
3563 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3564 break;
3565
3566 case DT_JMPREL:
3567 s = htab->elf.srelplt;
3568 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3569 break;
3570
3571 case DT_PLTRELSZ:
3572 s = htab->elf.srelplt;
3573 dyn.d_un.d_val = s->size;
3574 break;
3575 }
3576 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3577 }
3578
3579 /* Fill in the first entry in the procedure linkage table. */
3580 if (htab->elf.splt && htab->elf.splt->size > 0)
3581 {
3582 bfd_vma got_offs = (htab->elf.sgotplt->output_section->vma
3583 + htab->elf.sgotplt->output_offset
3584 - htab->dsbt->output_section->vma
3585 - htab->dsbt->output_offset) / 4;
3586
3587 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3588 bfd_put_32 (output_bfd, got_offs << 8 | 0x0100006e,
3589 htab->elf.splt->contents);
3590 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3591 bfd_put_32 (output_bfd, (got_offs + 1) << 8 | 0x0080006e,
3592 htab->elf.splt->contents + 4);
3593 /* nop 3 */
3594 bfd_put_32 (output_bfd, 0x00004000,
3595 htab->elf.splt->contents + 8);
3596 /* b .s2 b2 */
3597 bfd_put_32 (output_bfd, 0x00080362,
3598 htab->elf.splt->contents + 12);
3599 /* nop 5 */
3600 bfd_put_32 (output_bfd, 0x00008000,
3601 htab->elf.splt->contents + 16);
3602
3603 elf_section_data (htab->elf.splt->output_section)
3604 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
3605 }
3606 }
3607
3608 return TRUE;
3609 }
3610
3611 /* Return address for Ith PLT stub in section PLT, for relocation REL
3612 or (bfd_vma) -1 if it should not be included. */
3613
3614 static bfd_vma
elf32_tic6x_plt_sym_val(bfd_vma i,const asection * plt,const arelent * rel ATTRIBUTE_UNUSED)3615 elf32_tic6x_plt_sym_val (bfd_vma i, const asection *plt,
3616 const arelent *rel ATTRIBUTE_UNUSED)
3617 {
3618 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3619 }
3620
3621 static int
elf32_tic6x_obj_attrs_arg_type(int tag)3622 elf32_tic6x_obj_attrs_arg_type (int tag)
3623 {
3624 if (tag == Tag_ABI_compatibility)
3625 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
3626 else if (tag & 1)
3627 return ATTR_TYPE_FLAG_STR_VAL;
3628 else
3629 return ATTR_TYPE_FLAG_INT_VAL;
3630 }
3631
3632 static int
elf32_tic6x_obj_attrs_order(int num)3633 elf32_tic6x_obj_attrs_order (int num)
3634 {
3635 if (num == LEAST_KNOWN_OBJ_ATTRIBUTE)
3636 return Tag_ABI_conformance;
3637 if ((num - 1) < Tag_ABI_conformance)
3638 return num - 1;
3639 return num;
3640 }
3641
3642 static bfd_boolean
elf32_tic6x_obj_attrs_handle_unknown(bfd * abfd,int tag)3643 elf32_tic6x_obj_attrs_handle_unknown (bfd *abfd, int tag)
3644 {
3645 if ((tag & 127) < 64)
3646 {
3647 _bfd_error_handler
3648 (_("%B: error: unknown mandatory EABI object attribute %d"),
3649 abfd, tag);
3650 bfd_set_error (bfd_error_bad_value);
3651 return FALSE;
3652 }
3653 else
3654 {
3655 _bfd_error_handler
3656 (_("%B: warning: unknown EABI object attribute %d"),
3657 abfd, tag);
3658 return TRUE;
3659 }
3660 }
3661
3662 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3663 and return the merged value. At present, all merges succeed, so no
3664 return value for errors is defined. */
3665
3666 int
elf32_tic6x_merge_arch_attributes(int arch1,int arch2)3667 elf32_tic6x_merge_arch_attributes (int arch1, int arch2)
3668 {
3669 int min_arch, max_arch;
3670
3671 min_arch = (arch1 < arch2 ? arch1 : arch2);
3672 max_arch = (arch1 > arch2 ? arch1 : arch2);
3673
3674 /* In most cases, the numerically greatest value is the correct
3675 merged value, but merging C64 and C67 results in C674X. */
3676 if ((min_arch == C6XABI_Tag_ISA_C67X
3677 || min_arch == C6XABI_Tag_ISA_C67XP)
3678 && (max_arch == C6XABI_Tag_ISA_C64X
3679 || max_arch == C6XABI_Tag_ISA_C64XP))
3680 return C6XABI_Tag_ISA_C674X;
3681
3682 return max_arch;
3683 }
3684
3685 /* Convert a Tag_ABI_array_object_alignment or
3686 Tag_ABI_array_object_align_expected tag value TAG to a
3687 corresponding alignment value; return the alignment, or -1 for an
3688 unknown tag value. */
3689
3690 static int
elf32_tic6x_tag_to_array_alignment(int tag)3691 elf32_tic6x_tag_to_array_alignment (int tag)
3692 {
3693 switch (tag)
3694 {
3695 case 0:
3696 return 8;
3697
3698 case 1:
3699 return 4;
3700
3701 case 2:
3702 return 16;
3703
3704 default:
3705 return -1;
3706 }
3707 }
3708
3709 /* Convert a Tag_ABI_array_object_alignment or
3710 Tag_ABI_array_object_align_expected alignment ALIGN to a
3711 corresponding tag value; return the tag value. */
3712
3713 static int
elf32_tic6x_array_alignment_to_tag(int align)3714 elf32_tic6x_array_alignment_to_tag (int align)
3715 {
3716 switch (align)
3717 {
3718 case 8:
3719 return 0;
3720
3721 case 4:
3722 return 1;
3723
3724 case 16:
3725 return 2;
3726
3727 default:
3728 abort ();
3729 }
3730 }
3731
3732 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3733 succeeded, FALSE otherwise. */
3734
3735 static bfd_boolean
elf32_tic6x_merge_attributes(bfd * ibfd,bfd * obfd)3736 elf32_tic6x_merge_attributes (bfd *ibfd, bfd *obfd)
3737 {
3738 bfd_boolean result = TRUE;
3739 obj_attribute *in_attr;
3740 obj_attribute *out_attr;
3741 int i;
3742 int array_align_in, array_align_out, array_expect_in, array_expect_out;
3743
3744 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3745 {
3746 /* This is the first object. Copy the attributes. */
3747 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3748
3749 out_attr = elf_known_obj_attributes_proc (obfd);
3750
3751 /* Use the Tag_null value to indicate the attributes have been
3752 initialized. */
3753 out_attr[0].i = 1;
3754
3755 return TRUE;
3756 }
3757
3758 in_attr = elf_known_obj_attributes_proc (ibfd);
3759 out_attr = elf_known_obj_attributes_proc (obfd);
3760
3761 /* No specification yet for handling of unknown attributes, so just
3762 ignore them and handle known ones. */
3763
3764 if (out_attr[Tag_ABI_stack_align_preserved].i
3765 < in_attr[Tag_ABI_stack_align_needed].i)
3766 {
3767 _bfd_error_handler
3768 (_("error: %B requires more stack alignment than %B preserves"),
3769 ibfd, obfd);
3770 result = FALSE;
3771 }
3772 if (in_attr[Tag_ABI_stack_align_preserved].i
3773 < out_attr[Tag_ABI_stack_align_needed].i)
3774 {
3775 _bfd_error_handler
3776 (_("error: %B requires more stack alignment than %B preserves"),
3777 obfd, ibfd);
3778 result = FALSE;
3779 }
3780
3781 array_align_in = elf32_tic6x_tag_to_array_alignment
3782 (in_attr[Tag_ABI_array_object_alignment].i);
3783 if (array_align_in == -1)
3784 {
3785 _bfd_error_handler
3786 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3787 ibfd);
3788 result = FALSE;
3789 }
3790 array_align_out = elf32_tic6x_tag_to_array_alignment
3791 (out_attr[Tag_ABI_array_object_alignment].i);
3792 if (array_align_out == -1)
3793 {
3794 _bfd_error_handler
3795 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3796 obfd);
3797 result = FALSE;
3798 }
3799 array_expect_in = elf32_tic6x_tag_to_array_alignment
3800 (in_attr[Tag_ABI_array_object_align_expected].i);
3801 if (array_expect_in == -1)
3802 {
3803 _bfd_error_handler
3804 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3805 ibfd);
3806 result = FALSE;
3807 }
3808 array_expect_out = elf32_tic6x_tag_to_array_alignment
3809 (out_attr[Tag_ABI_array_object_align_expected].i);
3810 if (array_expect_out == -1)
3811 {
3812 _bfd_error_handler
3813 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3814 obfd);
3815 result = FALSE;
3816 }
3817
3818 if (array_align_out < array_expect_in)
3819 {
3820 _bfd_error_handler
3821 (_("error: %B requires more array alignment than %B preserves"),
3822 ibfd, obfd);
3823 result = FALSE;
3824 }
3825 if (array_align_in < array_expect_out)
3826 {
3827 _bfd_error_handler
3828 (_("error: %B requires more array alignment than %B preserves"),
3829 obfd, ibfd);
3830 result = FALSE;
3831 }
3832
3833 for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
3834 {
3835 switch (i)
3836 {
3837 case Tag_ISA:
3838 out_attr[i].i = elf32_tic6x_merge_arch_attributes (in_attr[i].i,
3839 out_attr[i].i);
3840 break;
3841
3842 case Tag_ABI_wchar_t:
3843 if (out_attr[i].i == 0)
3844 out_attr[i].i = in_attr[i].i;
3845 if (out_attr[i].i != 0
3846 && in_attr[i].i != 0
3847 && out_attr[i].i != in_attr[i].i)
3848 {
3849 _bfd_error_handler
3850 (_("warning: %B and %B differ in wchar_t size"), obfd, ibfd);
3851 }
3852 break;
3853
3854 case Tag_ABI_stack_align_needed:
3855 if (out_attr[i].i < in_attr[i].i)
3856 out_attr[i].i = in_attr[i].i;
3857 break;
3858
3859 case Tag_ABI_stack_align_preserved:
3860 if (out_attr[i].i > in_attr[i].i)
3861 out_attr[i].i = in_attr[i].i;
3862 break;
3863
3864 case Tag_ABI_DSBT:
3865 if (out_attr[i].i != in_attr[i].i)
3866 {
3867 _bfd_error_handler
3868 (_("warning: %B and %B differ in whether code is "
3869 "compiled for DSBT"),
3870 obfd, ibfd);
3871 }
3872 break;
3873
3874 case Tag_ABI_PIC:
3875 case Tag_ABI_PID:
3876 if (out_attr[i].i > in_attr[i].i)
3877 out_attr[i].i = in_attr[i].i;
3878 break;
3879
3880 case Tag_ABI_array_object_alignment:
3881 if (array_align_out != -1
3882 && array_align_in != -1
3883 && array_align_out > array_align_in)
3884 out_attr[i].i
3885 = elf32_tic6x_array_alignment_to_tag (array_align_in);
3886 break;
3887
3888 case Tag_ABI_array_object_align_expected:
3889 if (array_expect_out != -1
3890 && array_expect_in != -1
3891 && array_expect_out < array_expect_in)
3892 out_attr[i].i
3893 = elf32_tic6x_array_alignment_to_tag (array_expect_in);
3894 break;
3895
3896 case Tag_ABI_conformance:
3897 /* Merging for this attribute is not specified. As on ARM,
3898 treat a missing attribute as no claim to conform and only
3899 merge identical values. */
3900 if (out_attr[i].s == NULL
3901 || in_attr[i].s == NULL
3902 || strcmp (out_attr[i].s,
3903 in_attr[i].s) != 0)
3904 out_attr[i].s = NULL;
3905 break;
3906
3907 case Tag_ABI_compatibility:
3908 /* Merged in _bfd_elf_merge_object_attributes. */
3909 break;
3910
3911 default:
3912 result
3913 = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
3914 break;
3915 }
3916
3917 if (in_attr[i].type && !out_attr[i].type)
3918 out_attr[i].type = in_attr[i].type;
3919 }
3920
3921 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
3922 if (!_bfd_elf_merge_object_attributes (ibfd, obfd))
3923 return FALSE;
3924
3925 result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
3926
3927 return result;
3928 }
3929
3930 static bfd_boolean
elf32_tic6x_merge_private_bfd_data(bfd * ibfd,bfd * obfd)3931 elf32_tic6x_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3932 {
3933 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
3934 return FALSE;
3935
3936 if (! is_tic6x_elf (ibfd) || ! is_tic6x_elf (obfd))
3937 return TRUE;
3938
3939 if (!elf32_tic6x_merge_attributes (ibfd, obfd))
3940 return FALSE;
3941
3942 return TRUE;
3943 }
3944
3945 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
3946 adds the edit to the start of the list. (The list must be built in order of
3947 ascending TINDEX: the function's callers are primarily responsible for
3948 maintaining that condition). */
3949
3950 static void
elf32_tic6x_add_unwind_table_edit(tic6x_unwind_table_edit ** head,tic6x_unwind_table_edit ** tail,tic6x_unwind_edit_type type,asection * linked_section,unsigned int tindex)3951 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit **head,
3952 tic6x_unwind_table_edit **tail,
3953 tic6x_unwind_edit_type type,
3954 asection *linked_section,
3955 unsigned int tindex)
3956 {
3957 tic6x_unwind_table_edit *new_edit = (tic6x_unwind_table_edit *)
3958 xmalloc (sizeof (tic6x_unwind_table_edit));
3959
3960 new_edit->type = type;
3961 new_edit->linked_section = linked_section;
3962 new_edit->index = tindex;
3963
3964 if (tindex > 0)
3965 {
3966 new_edit->next = NULL;
3967
3968 if (*tail)
3969 (*tail)->next = new_edit;
3970
3971 (*tail) = new_edit;
3972
3973 if (!*head)
3974 (*head) = new_edit;
3975 }
3976 else
3977 {
3978 new_edit->next = *head;
3979
3980 if (!*tail)
3981 *tail = new_edit;
3982
3983 *head = new_edit;
3984 }
3985 }
3986
3987 static _tic6x_elf_section_data *
get_tic6x_elf_section_data(asection * sec)3988 get_tic6x_elf_section_data (asection * sec)
3989 {
3990 if (sec && sec->owner && is_tic6x_elf (sec->owner))
3991 return elf32_tic6x_section_data (sec);
3992 else
3993 return NULL;
3994 }
3995
3996
3997 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
3998 static void
elf32_tic6x_adjust_exidx_size(asection * exidx_sec,int adjust)3999 elf32_tic6x_adjust_exidx_size (asection *exidx_sec, int adjust)
4000 {
4001 asection *out_sec;
4002
4003 if (!exidx_sec->rawsize)
4004 exidx_sec->rawsize = exidx_sec->size;
4005
4006 bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust);
4007 out_sec = exidx_sec->output_section;
4008 /* Adjust size of output section. */
4009 bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust);
4010 }
4011
4012 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
4013 static void
elf32_tic6x_insert_cantunwind_after(asection * text_sec,asection * exidx_sec)4014 elf32_tic6x_insert_cantunwind_after (asection *text_sec, asection *exidx_sec)
4015 {
4016 struct _tic6x_elf_section_data *exidx_data;
4017
4018 exidx_data = get_tic6x_elf_section_data (exidx_sec);
4019 elf32_tic6x_add_unwind_table_edit (
4020 &exidx_data->u.exidx.unwind_edit_list,
4021 &exidx_data->u.exidx.unwind_edit_tail,
4022 INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX);
4023
4024 elf32_tic6x_adjust_exidx_size (exidx_sec, 8);
4025 }
4026
4027 /* Scan .cx6abi.exidx tables, and create a list describing edits which
4028 should be made to those tables, such that:
4029
4030 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
4031 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
4032 codes which have been inlined into the index).
4033
4034 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
4035
4036 The edits are applied when the tables are written
4037 (in elf32_tic6x_write_section).
4038 */
4039
4040 bfd_boolean
elf32_tic6x_fix_exidx_coverage(asection ** text_section_order,unsigned int num_text_sections,struct bfd_link_info * info,bfd_boolean merge_exidx_entries)4041 elf32_tic6x_fix_exidx_coverage (asection **text_section_order,
4042 unsigned int num_text_sections,
4043 struct bfd_link_info *info,
4044 bfd_boolean merge_exidx_entries)
4045 {
4046 bfd *inp;
4047 unsigned int last_second_word = 0, i;
4048 asection *last_exidx_sec = NULL;
4049 asection *last_text_sec = NULL;
4050 int last_unwind_type = -1;
4051
4052 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
4053 text sections. */
4054 for (inp = info->input_bfds; inp != NULL; inp = inp->link.next)
4055 {
4056 asection *sec;
4057
4058 for (sec = inp->sections; sec != NULL; sec = sec->next)
4059 {
4060 struct bfd_elf_section_data *elf_sec = elf_section_data (sec);
4061 Elf_Internal_Shdr *hdr = &elf_sec->this_hdr;
4062
4063 if (!hdr || hdr->sh_type != SHT_C6000_UNWIND)
4064 continue;
4065
4066 if (elf_sec->linked_to)
4067 {
4068 Elf_Internal_Shdr *linked_hdr
4069 = &elf_section_data (elf_sec->linked_to)->this_hdr;
4070 struct _tic6x_elf_section_data *linked_sec_tic6x_data
4071 = get_tic6x_elf_section_data (linked_hdr->bfd_section);
4072
4073 if (linked_sec_tic6x_data == NULL)
4074 continue;
4075
4076 /* Link this .c6xabi.exidx section back from the
4077 text section it describes. */
4078 linked_sec_tic6x_data->u.text.tic6x_exidx_sec = sec;
4079 }
4080 }
4081 }
4082
4083 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4084 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4085 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4086
4087 for (i = 0; i < num_text_sections; i++)
4088 {
4089 asection *sec = text_section_order[i];
4090 asection *exidx_sec;
4091 struct _tic6x_elf_section_data *tic6x_data
4092 = get_tic6x_elf_section_data (sec);
4093 struct _tic6x_elf_section_data *exidx_data;
4094 bfd_byte *contents = NULL;
4095 int deleted_exidx_bytes = 0;
4096 bfd_vma j;
4097 tic6x_unwind_table_edit *unwind_edit_head = NULL;
4098 tic6x_unwind_table_edit *unwind_edit_tail = NULL;
4099 Elf_Internal_Shdr *hdr;
4100 bfd *ibfd;
4101
4102 if (tic6x_data == NULL)
4103 continue;
4104
4105 exidx_sec = tic6x_data->u.text.tic6x_exidx_sec;
4106 if (exidx_sec == NULL)
4107 {
4108 /* Section has no unwind data. */
4109 if (last_unwind_type == 0 || !last_exidx_sec)
4110 continue;
4111
4112 /* Ignore zero sized sections. */
4113 if (sec->size == 0)
4114 continue;
4115
4116 elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec);
4117 last_unwind_type = 0;
4118 continue;
4119 }
4120
4121 /* Skip /DISCARD/ sections. */
4122 if (bfd_is_abs_section (exidx_sec->output_section))
4123 continue;
4124
4125 hdr = &elf_section_data (exidx_sec)->this_hdr;
4126 if (hdr->sh_type != SHT_C6000_UNWIND)
4127 continue;
4128
4129 exidx_data = get_tic6x_elf_section_data (exidx_sec);
4130 if (exidx_data == NULL)
4131 continue;
4132
4133 ibfd = exidx_sec->owner;
4134
4135 if (hdr->contents != NULL)
4136 contents = hdr->contents;
4137 else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents))
4138 /* An error? */
4139 continue;
4140
4141 for (j = 0; j < hdr->sh_size; j += 8)
4142 {
4143 unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4);
4144 int unwind_type;
4145 int elide = 0;
4146
4147 /* An EXIDX_CANTUNWIND entry. */
4148 if (second_word == 1)
4149 {
4150 if (last_unwind_type == 0)
4151 elide = 1;
4152 unwind_type = 0;
4153 }
4154 /* Inlined unwinding data. Merge if equal to previous. */
4155 else if ((second_word & 0x80000000) != 0)
4156 {
4157 if (merge_exidx_entries
4158 && last_second_word == second_word
4159 && last_unwind_type == 1)
4160 elide = 1;
4161 unwind_type = 1;
4162 last_second_word = second_word;
4163 }
4164 /* Normal table entry. In theory we could merge these too,
4165 but duplicate entries are likely to be much less common. */
4166 else
4167 unwind_type = 2;
4168
4169 if (elide)
4170 {
4171 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head,
4172 &unwind_edit_tail, DELETE_EXIDX_ENTRY, NULL, j / 8);
4173
4174 deleted_exidx_bytes += 8;
4175 }
4176
4177 last_unwind_type = unwind_type;
4178 }
4179
4180 /* Free contents if we allocated it ourselves. */
4181 if (contents != hdr->contents)
4182 free (contents);
4183
4184 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4185 exidx_data->u.exidx.unwind_edit_list = unwind_edit_head;
4186 exidx_data->u.exidx.unwind_edit_tail = unwind_edit_tail;
4187
4188 if (deleted_exidx_bytes > 0)
4189 elf32_tic6x_adjust_exidx_size (exidx_sec, -deleted_exidx_bytes);
4190
4191 last_exidx_sec = exidx_sec;
4192 last_text_sec = sec;
4193 }
4194
4195 /* Add terminating CANTUNWIND entry. */
4196 if (last_exidx_sec && last_unwind_type != 0)
4197 elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec);
4198
4199 return TRUE;
4200 }
4201
4202 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4203
4204 static unsigned long
elf32_tic6x_add_low31(unsigned long val,bfd_vma addend)4205 elf32_tic6x_add_low31 (unsigned long val, bfd_vma addend)
4206 {
4207 return (val & ~0x7ffffffful) | ((val + addend) & 0x7ffffffful);
4208 }
4209
4210 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4211 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4212
4213
4214 static void
elf32_tic6x_copy_exidx_entry(bfd * output_bfd,bfd_byte * to,bfd_byte * from,bfd_vma offset)4215 elf32_tic6x_copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from,
4216 bfd_vma offset)
4217 {
4218 unsigned long first_word = bfd_get_32 (output_bfd, from);
4219 unsigned long second_word = bfd_get_32 (output_bfd, from + 4);
4220
4221 offset >>= 1;
4222 /* High bit of first word is supposed to be zero. */
4223 if ((first_word & 0x80000000ul) == 0)
4224 first_word = elf32_tic6x_add_low31 (first_word, offset);
4225
4226 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4227 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4228 if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0))
4229 second_word = elf32_tic6x_add_low31 (second_word, offset);
4230
4231 bfd_put_32 (output_bfd, first_word, to);
4232 bfd_put_32 (output_bfd, second_word, to + 4);
4233 }
4234
4235 /* Do the actual mangling of exception index tables. */
4236
4237 static bfd_boolean
elf32_tic6x_write_section(bfd * output_bfd,struct bfd_link_info * link_info,asection * sec,bfd_byte * contents)4238 elf32_tic6x_write_section (bfd *output_bfd,
4239 struct bfd_link_info *link_info,
4240 asection *sec,
4241 bfd_byte *contents)
4242 {
4243 _tic6x_elf_section_data *tic6x_data;
4244 struct elf32_tic6x_link_hash_table *globals
4245 = elf32_tic6x_hash_table (link_info);
4246 bfd_vma offset = sec->output_section->vma + sec->output_offset;
4247
4248 if (globals == NULL)
4249 return FALSE;
4250
4251 /* If this section has not been allocated an _tic6x_elf_section_data
4252 structure then we cannot record anything. */
4253 tic6x_data = get_tic6x_elf_section_data (sec);
4254 if (tic6x_data == NULL)
4255 return FALSE;
4256
4257 if (tic6x_data->elf.this_hdr.sh_type != SHT_C6000_UNWIND)
4258 return FALSE;
4259
4260 tic6x_unwind_table_edit *edit_node
4261 = tic6x_data->u.exidx.unwind_edit_list;
4262 /* Now, sec->size is the size of the section we will write. The original
4263 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4264 markers) was sec->rawsize. (This isn't the case if we perform no
4265 edits, then rawsize will be zero and we should use size). */
4266 bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size);
4267 unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size;
4268 unsigned int in_index, out_index;
4269 bfd_vma add_to_offsets = 0;
4270
4271 for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;)
4272 {
4273 if (edit_node)
4274 {
4275 unsigned int edit_index = edit_node->index;
4276
4277 if (in_index < edit_index && in_index * 8 < input_size)
4278 {
4279 elf32_tic6x_copy_exidx_entry (output_bfd,
4280 edited_contents + out_index * 8,
4281 contents + in_index * 8, add_to_offsets);
4282 out_index++;
4283 in_index++;
4284 }
4285 else if (in_index == edit_index
4286 || (in_index * 8 >= input_size
4287 && edit_index == UINT_MAX))
4288 {
4289 switch (edit_node->type)
4290 {
4291 case DELETE_EXIDX_ENTRY:
4292 in_index++;
4293 add_to_offsets += 8;
4294 break;
4295
4296 case INSERT_EXIDX_CANTUNWIND_AT_END:
4297 {
4298 asection *text_sec = edit_node->linked_section;
4299 bfd_vma text_offset = text_sec->output_section->vma
4300 + text_sec->output_offset
4301 + text_sec->size;
4302 bfd_vma exidx_offset = offset + out_index * 8;
4303 unsigned long prel31_offset;
4304
4305 /* Note: this is meant to be equivalent to an
4306 R_C6000_PREL31 relocation. These synthetic
4307 EXIDX_CANTUNWIND markers are not relocated by the
4308 usual BFD method. */
4309 prel31_offset = ((text_offset - exidx_offset) >> 1)
4310 & 0x7ffffffful;
4311
4312 /* First address we can't unwind. */
4313 bfd_put_32 (output_bfd, prel31_offset,
4314 &edited_contents[out_index * 8]);
4315
4316 /* Code for EXIDX_CANTUNWIND. */
4317 bfd_put_32 (output_bfd, 0x1,
4318 &edited_contents[out_index * 8 + 4]);
4319
4320 out_index++;
4321 add_to_offsets -= 8;
4322 }
4323 break;
4324 }
4325
4326 edit_node = edit_node->next;
4327 }
4328 }
4329 else
4330 {
4331 /* No more edits, copy remaining entries verbatim. */
4332 elf32_tic6x_copy_exidx_entry (output_bfd,
4333 edited_contents + out_index * 8,
4334 contents + in_index * 8, add_to_offsets);
4335 out_index++;
4336 in_index++;
4337 }
4338 }
4339
4340 if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD))
4341 bfd_set_section_contents (output_bfd, sec->output_section,
4342 edited_contents,
4343 (file_ptr) sec->output_offset, sec->size);
4344
4345 return TRUE;
4346 }
4347
4348 #define TARGET_LITTLE_SYM tic6x_elf32_le_vec
4349 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4350 #define TARGET_BIG_SYM tic6x_elf32_be_vec
4351 #define TARGET_BIG_NAME "elf32-tic6x-be"
4352 #define ELF_ARCH bfd_arch_tic6x
4353 #define ELF_TARGET_ID TIC6X_ELF_DATA
4354 #define ELF_MACHINE_CODE EM_TI_C6000
4355 #define ELF_MAXPAGESIZE 0x1000
4356 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4357 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4358 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4359 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4360 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4361 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4362 #define elf_backend_stack_align 8
4363 #define elf_backend_can_gc_sections 1
4364 #define elf_backend_default_use_rela_p 1
4365 #define elf_backend_may_use_rel_p 1
4366 #define elf_backend_may_use_rela_p 1
4367 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4368 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4369 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4370 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4371 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4372 #define elf_backend_obj_attrs_vendor "c6xabi"
4373 #define elf_backend_can_refcount 1
4374 #define elf_backend_want_got_plt 1
4375 #define elf_backend_want_dynbss 1
4376 #define elf_backend_plt_readonly 1
4377 #define elf_backend_rela_normal 1
4378 #define elf_backend_got_header_size 8
4379 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4380 #define elf_backend_gc_sweep_hook elf32_tic6x_gc_sweep_hook
4381 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4382 #define elf_backend_create_dynamic_sections \
4383 elf32_tic6x_create_dynamic_sections
4384 #define elf_backend_adjust_dynamic_symbol \
4385 elf32_tic6x_adjust_dynamic_symbol
4386 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4387 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4388 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4389 #define elf_backend_link_output_symbol_hook \
4390 elf32_tic6x_link_output_symbol_hook
4391 #define elf_backend_section_from_bfd_section \
4392 elf32_tic6x_section_from_bfd_section
4393 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4394 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4395 #define elf_backend_finish_dynamic_symbol \
4396 elf32_tic6x_finish_dynamic_symbol
4397 #define elf_backend_always_size_sections \
4398 elf32_tic6x_always_size_sections
4399 #define elf_backend_size_dynamic_sections \
4400 elf32_tic6x_size_dynamic_sections
4401 #define elf_backend_finish_dynamic_sections \
4402 elf32_tic6x_finish_dynamic_sections
4403 #define bfd_elf32_bfd_final_link \
4404 elf32_tic6x_final_link
4405 #define elf_backend_write_section elf32_tic6x_write_section
4406 #define elf_info_to_howto elf32_tic6x_info_to_howto
4407 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4408
4409 #undef elf_backend_omit_section_dynsym
4410 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4411 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4412
4413 #include "elf32-target.h"
4414
4415 #undef elf32_bed
4416 #define elf32_bed elf32_tic6x_linux_bed
4417
4418 #undef TARGET_LITTLE_SYM
4419 #define TARGET_LITTLE_SYM tic6x_elf32_linux_le_vec
4420 #undef TARGET_LITTLE_NAME
4421 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4422 #undef TARGET_BIG_SYM
4423 #define TARGET_BIG_SYM tic6x_elf32_linux_be_vec
4424 #undef TARGET_BIG_NAME
4425 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4426 #undef ELF_OSABI
4427 #define ELF_OSABI ELFOSABI_C6000_LINUX
4428
4429 #include "elf32-target.h"
4430
4431 #undef elf32_bed
4432 #define elf32_bed elf32_tic6x_elf_bed
4433
4434 #undef TARGET_LITTLE_SYM
4435 #define TARGET_LITTLE_SYM tic6x_elf32_c6000_le_vec
4436 #undef TARGET_LITTLE_NAME
4437 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4438 #undef TARGET_BIG_SYM
4439 #define TARGET_BIG_SYM tic6x_elf32_c6000_be_vec
4440 #undef TARGET_BIG_NAME
4441 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4442 #undef ELF_OSABI
4443 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4444
4445 #include "elf32-target.h"
4446