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PR ld/13991
[deliverable/binutils-gdb.git] / bfd / elf32-tic6x.c
1 /* 32-bit ELF support for TI C6X
2 Copyright 2010, 2011, 2012
3 Free Software Foundation, Inc.
4 Contributed by Joseph Myers <joseph@codesourcery.com>
5 Bernd Schmidt <bernds@codesourcery.com>
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include <limits.h>
26 #include "bfd.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/tic6x.h"
31 #include "elf32-tic6x.h"
32
33 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
34
35 /* DSBT binaries have a default 128K stack. */
36 #define DEFAULT_STACK_SIZE 0x20000
37
38 /* The size in bytes of an entry in the procedure linkage table. */
39 #define PLT_ENTRY_SIZE 24
40
41 /* TI C6X ELF linker hash table. */
42
43 struct elf32_tic6x_link_hash_table
44 {
45 struct elf_link_hash_table elf;
46
47 /* Short-cuts to get to dynamic linker sections. */
48 asection *sdynbss;
49 asection *srelbss;
50
51 /* C6X specific command line arguments. */
52 struct elf32_tic6x_params params;
53
54 /* Small local sym cache. */
55 struct sym_cache sym_cache;
56
57 /* The output BFD, for convenience. */
58 bfd *obfd;
59
60 /* The .dsbt section. */
61 asection *dsbt;
62 };
63
64 /* Get the TI C6X ELF linker hash table from a link_info structure. */
65
66 #define elf32_tic6x_hash_table(p) \
67 ((struct elf32_tic6x_link_hash_table *) ((p)->hash))
68
69 /* TI C6X ELF linker hash entry. */
70
71 struct elf32_tic6x_link_hash_entry
72 {
73 struct elf_link_hash_entry elf;
74
75 /* Track dynamic relocs copied for this symbol. */
76 struct elf_dyn_relocs *dyn_relocs;
77 };
78
79 typedef enum
80 {
81 DELETE_EXIDX_ENTRY,
82 INSERT_EXIDX_CANTUNWIND_AT_END
83 }
84 tic6x_unwind_edit_type;
85
86 /* A (sorted) list of edits to apply to an unwind table. */
87 typedef struct tic6x_unwind_table_edit
88 {
89 tic6x_unwind_edit_type type;
90 /* Note: we sometimes want to insert an unwind entry corresponding to a
91 section different from the one we're currently writing out, so record the
92 (text) section this edit relates to here. */
93 asection *linked_section;
94 unsigned int index;
95 struct tic6x_unwind_table_edit *next;
96 }
97 tic6x_unwind_table_edit;
98
99 typedef struct _tic6x_elf_section_data
100 {
101 /* Information about mapping symbols. */
102 struct bfd_elf_section_data elf;
103 /* Information about unwind tables. */
104 union
105 {
106 /* Unwind info attached to a text section. */
107 struct
108 {
109 asection *tic6x_exidx_sec;
110 } text;
111
112 /* Unwind info attached to an .c6xabi.exidx section. */
113 struct
114 {
115 tic6x_unwind_table_edit *unwind_edit_list;
116 tic6x_unwind_table_edit *unwind_edit_tail;
117 } exidx;
118 } u;
119 }
120 _tic6x_elf_section_data;
121
122 #define elf32_tic6x_section_data(sec) \
123 ((_tic6x_elf_section_data *) elf_section_data (sec))
124
125 struct elf32_tic6x_obj_tdata
126 {
127 struct elf_obj_tdata root;
128
129 /* Whether to use RELA relocations when generating relocations.
130 This is a per-object flag to allow the assembler to generate REL
131 relocations for use in linker testcases. */
132 bfd_boolean use_rela_p;
133 };
134
135 #define elf32_tic6x_tdata(abfd) \
136 ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any)
137
138 #define is_tic6x_elf(bfd) \
139 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
140 && elf_tdata (bfd) != NULL \
141 && elf_object_id (bfd) == TIC6X_ELF_DATA)
142
143 /* C6X ELF uses two common sections. One is the usual one, and the
144 other is for small objects. All the small objects are kept
145 together, and then referenced via the gp pointer, which yields
146 faster assembler code. This is what we use for the small common
147 section. This approach is copied from ecoff.c. */
148 static asection tic6x_elf_scom_section;
149 static asymbol tic6x_elf_scom_symbol;
150 static asymbol *tic6x_elf_scom_symbol_ptr;
151
152 static reloc_howto_type elf32_tic6x_howto_table[] =
153 {
154 HOWTO (R_C6000_NONE, /* type */
155 0, /* rightshift */
156 0, /* size (0 = byte, 1 = short, 2 = long) */
157 0, /* bitsize */
158 FALSE, /* pc_relative */
159 0, /* bitpos */
160 complain_overflow_dont,/* complain_on_overflow */
161 bfd_elf_generic_reloc, /* special_function */
162 "R_C6000_NONE", /* name */
163 FALSE, /* partial_inplace */
164 0, /* src_mask */
165 0, /* dst_mask */
166 FALSE), /* pcrel_offset */
167 HOWTO (R_C6000_ABS32, /* type */
168 0, /* rightshift */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
170 32, /* bitsize */
171 FALSE, /* pc_relative */
172 0, /* bitpos */
173 complain_overflow_dont,/* complain_on_overflow */
174 bfd_elf_generic_reloc, /* special_function */
175 "R_C6000_ABS32", /* name */
176 FALSE, /* partial_inplace */
177 0, /* src_mask */
178 0xffffffff, /* dst_mask */
179 FALSE), /* pcrel_offset */
180 HOWTO (R_C6000_ABS16, /* type */
181 0, /* rightshift */
182 1, /* size (0 = byte, 1 = short, 2 = long) */
183 16, /* bitsize */
184 FALSE, /* pc_relative */
185 0, /* bitpos */
186 complain_overflow_bitfield,/* complain_on_overflow */
187 bfd_elf_generic_reloc, /* special_function */
188 "R_C6000_ABS16", /* name */
189 FALSE, /* partial_inplace */
190 0, /* src_mask */
191 0x0000ffff, /* dst_mask */
192 FALSE), /* pcrel_offset */
193 HOWTO (R_C6000_ABS8, /* type */
194 0, /* rightshift */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
196 8, /* bitsize */
197 FALSE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_bitfield,/* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_C6000_ABS8", /* name */
202 FALSE, /* partial_inplace */
203 0, /* src_mask */
204 0x000000ff, /* dst_mask */
205 FALSE), /* pcrel_offset */
206 HOWTO (R_C6000_PCR_S21, /* type */
207 2, /* rightshift */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
209 21, /* bitsize */
210 TRUE, /* pc_relative */
211 7, /* bitpos */
212 complain_overflow_signed,/* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_C6000_PCR_S21", /* name */
215 FALSE, /* partial_inplace */
216 0, /* src_mask */
217 0x0fffff80, /* dst_mask */
218 TRUE), /* pcrel_offset */
219 HOWTO (R_C6000_PCR_S12, /* type */
220 2, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 12, /* bitsize */
223 TRUE, /* pc_relative */
224 16, /* bitpos */
225 complain_overflow_signed,/* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_C6000_PCR_S12", /* name */
228 FALSE, /* partial_inplace */
229 0, /* src_mask */
230 0x0fff0000, /* dst_mask */
231 TRUE), /* pcrel_offset */
232 HOWTO (R_C6000_PCR_S10, /* type */
233 2, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 10, /* bitsize */
236 TRUE, /* pc_relative */
237 13, /* bitpos */
238 complain_overflow_signed,/* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_C6000_PCR_S10", /* name */
241 FALSE, /* partial_inplace */
242 0, /* src_mask */
243 0x007fe000, /* dst_mask */
244 TRUE), /* pcrel_offset */
245 HOWTO (R_C6000_PCR_S7, /* type */
246 2, /* rightshift */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
248 7, /* bitsize */
249 TRUE, /* pc_relative */
250 16, /* bitpos */
251 complain_overflow_signed,/* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_C6000_PCR_S7", /* name */
254 FALSE, /* partial_inplace */
255 0, /* src_mask */
256 0x007f0000, /* dst_mask */
257 TRUE), /* pcrel_offset */
258 HOWTO (R_C6000_ABS_S16, /* type */
259 0, /* rightshift */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
261 16, /* bitsize */
262 FALSE, /* pc_relative */
263 7, /* bitpos */
264 complain_overflow_signed,/* complain_on_overflow */
265 bfd_elf_generic_reloc, /* special_function */
266 "R_C6000_ABS_S16", /* name */
267 FALSE, /* partial_inplace */
268 0, /* src_mask */
269 0x007fff80, /* dst_mask */
270 FALSE), /* pcrel_offset */
271 HOWTO (R_C6000_ABS_L16, /* type */
272 0, /* rightshift */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
274 16, /* bitsize */
275 FALSE, /* pc_relative */
276 7, /* bitpos */
277 complain_overflow_dont,/* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_C6000_ABS_L16", /* name */
280 FALSE, /* partial_inplace */
281 0, /* src_mask */
282 0x007fff80, /* dst_mask */
283 FALSE), /* pcrel_offset */
284 HOWTO (R_C6000_ABS_H16, /* type */
285 16, /* rightshift */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
287 16, /* bitsize */
288 FALSE, /* pc_relative */
289 7, /* bitpos */
290 complain_overflow_dont,/* complain_on_overflow */
291 bfd_elf_generic_reloc, /* special_function */
292 "R_C6000_ABS_H16", /* name */
293 FALSE, /* partial_inplace */
294 0, /* src_mask */
295 0x007fff80, /* dst_mask */
296 FALSE), /* pcrel_offset */
297 HOWTO (R_C6000_SBR_U15_B, /* type */
298 0, /* rightshift */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
300 15, /* bitsize */
301 FALSE, /* pc_relative */
302 8, /* bitpos */
303 complain_overflow_unsigned,/* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_C6000_SBR_U15_B", /* name */
306 FALSE, /* partial_inplace */
307 0, /* src_mask */
308 0x007fff00, /* dst_mask */
309 FALSE), /* pcrel_offset */
310 HOWTO (R_C6000_SBR_U15_H, /* type */
311 1, /* rightshift */
312 2, /* size (0 = byte, 1 = short, 2 = long) */
313 15, /* bitsize */
314 FALSE, /* pc_relative */
315 8, /* bitpos */
316 complain_overflow_unsigned,/* complain_on_overflow */
317 bfd_elf_generic_reloc, /* special_function */
318 "R_C6000_SBR_U15_H", /* name */
319 FALSE, /* partial_inplace */
320 0, /* src_mask */
321 0x007fff00, /* dst_mask */
322 FALSE), /* pcrel_offset */
323 HOWTO (R_C6000_SBR_U15_W, /* type */
324 2, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 15, /* bitsize */
327 FALSE, /* pc_relative */
328 8, /* bitpos */
329 complain_overflow_unsigned,/* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_C6000_SBR_U15_W", /* name */
332 FALSE, /* partial_inplace */
333 0, /* src_mask */
334 0x007fff00, /* dst_mask */
335 FALSE), /* pcrel_offset */
336 HOWTO (R_C6000_SBR_S16, /* type */
337 0, /* rightshift */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
339 16, /* bitsize */
340 FALSE, /* pc_relative */
341 7, /* bitpos */
342 complain_overflow_signed,/* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_C6000_SBR_S16", /* name */
345 FALSE, /* partial_inplace */
346 0, /* src_mask */
347 0x007fff80, /* dst_mask */
348 FALSE), /* pcrel_offset */
349 HOWTO (R_C6000_SBR_L16_B, /* type */
350 0, /* rightshift */
351 2, /* size (0 = byte, 1 = short, 2 = long) */
352 16, /* bitsize */
353 FALSE, /* pc_relative */
354 7, /* bitpos */
355 complain_overflow_dont,/* complain_on_overflow */
356 bfd_elf_generic_reloc, /* special_function */
357 "R_C6000_SBR_L16_B", /* name */
358 FALSE, /* partial_inplace */
359 0, /* src_mask */
360 0x007fff80, /* dst_mask */
361 FALSE), /* pcrel_offset */
362 HOWTO (R_C6000_SBR_L16_H, /* type */
363 1, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 16, /* bitsize */
366 FALSE, /* pc_relative */
367 7, /* bitpos */
368 complain_overflow_dont,/* complain_on_overflow */
369 bfd_elf_generic_reloc, /* special_function */
370 "R_C6000_SBR_L16_H", /* name */
371 FALSE, /* partial_inplace */
372 0, /* src_mask */
373 0x007fff80, /* dst_mask */
374 FALSE), /* pcrel_offset */
375 HOWTO (R_C6000_SBR_L16_W, /* type */
376 2, /* rightshift */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
378 16, /* bitsize */
379 FALSE, /* pc_relative */
380 7, /* bitpos */
381 complain_overflow_dont,/* complain_on_overflow */
382 bfd_elf_generic_reloc, /* special_function */
383 "R_C6000_SBR_L16_W", /* name */
384 FALSE, /* partial_inplace */
385 0, /* src_mask */
386 0x007fff80, /* dst_mask */
387 FALSE), /* pcrel_offset */
388 HOWTO (R_C6000_SBR_H16_B, /* type */
389 16, /* rightshift */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
391 16, /* bitsize */
392 FALSE, /* pc_relative */
393 7, /* bitpos */
394 complain_overflow_dont,/* complain_on_overflow */
395 bfd_elf_generic_reloc, /* special_function */
396 "R_C6000_SBR_H16_B", /* name */
397 FALSE, /* partial_inplace */
398 0, /* src_mask */
399 0x007fff80, /* dst_mask */
400 FALSE), /* pcrel_offset */
401 HOWTO (R_C6000_SBR_H16_H, /* type */
402 17, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
405 FALSE, /* pc_relative */
406 7, /* bitpos */
407 complain_overflow_dont,/* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_C6000_SBR_H16_H", /* name */
410 FALSE, /* partial_inplace */
411 0, /* src_mask */
412 0x007fff80, /* dst_mask */
413 FALSE), /* pcrel_offset */
414 HOWTO (R_C6000_SBR_H16_W, /* type */
415 18, /* rightshift */
416 2, /* size (0 = byte, 1 = short, 2 = long) */
417 16, /* bitsize */
418 FALSE, /* pc_relative */
419 7, /* bitpos */
420 complain_overflow_dont,/* complain_on_overflow */
421 bfd_elf_generic_reloc, /* special_function */
422 "R_C6000_SBR_H16_W", /* name */
423 FALSE, /* partial_inplace */
424 0, /* src_mask */
425 0x007fff80, /* dst_mask */
426 FALSE), /* pcrel_offset */
427 HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
428 2, /* rightshift */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
430 15, /* bitsize */
431 FALSE, /* pc_relative */
432 8, /* bitpos */
433 complain_overflow_unsigned,/* complain_on_overflow */
434 bfd_elf_generic_reloc, /* special_function */
435 "R_C6000_SBR_GOT_U15_W",/* name */
436 FALSE, /* partial_inplace */
437 0, /* src_mask */
438 0x007fff00, /* dst_mask */
439 FALSE), /* pcrel_offset */
440 HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
441 2, /* rightshift */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
443 16, /* bitsize */
444 FALSE, /* pc_relative */
445 7, /* bitpos */
446 complain_overflow_dont,/* complain_on_overflow */
447 bfd_elf_generic_reloc, /* special_function */
448 "R_C6000_SBR_GOT_L16_W",/* name */
449 FALSE, /* partial_inplace */
450 0, /* src_mask */
451 0x007fff80, /* dst_mask */
452 FALSE), /* pcrel_offset */
453 HOWTO (R_C6000_SBR_GOT_H16_W, /* type */
454 18, /* rightshift */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
456 16, /* bitsize */
457 FALSE, /* pc_relative */
458 7, /* bitpos */
459 complain_overflow_dont,/* complain_on_overflow */
460 bfd_elf_generic_reloc, /* special_function */
461 "R_C6000_SBR_GOT_H16_W",/* name */
462 FALSE, /* partial_inplace */
463 0, /* src_mask */
464 0x007fff80, /* dst_mask */
465 FALSE), /* pcrel_offset */
466 HOWTO (R_C6000_DSBT_INDEX, /* type */
467 0, /* rightshift */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
469 15, /* bitsize */
470 FALSE, /* pc_relative */
471 8, /* bitpos */
472 complain_overflow_unsigned,/* complain_on_overflow */
473 bfd_elf_generic_reloc, /* special_function */
474 "R_C6000_DSBT_INDEX", /* name */
475 FALSE, /* partial_inplace */
476 0, /* src_mask */
477 0x007fff00, /* dst_mask */
478 FALSE), /* pcrel_offset */
479 HOWTO (R_C6000_PREL31, /* type */
480 1, /* rightshift */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
482 31, /* bitsize */
483 TRUE, /* pc_relative */
484 0, /* bitpos */
485 complain_overflow_dont,/* complain_on_overflow */
486 bfd_elf_generic_reloc, /* special_function */
487 "R_C6000_PREL31", /* name */
488 FALSE, /* partial_inplace */
489 0, /* src_mask */
490 0x7fffffff, /* dst_mask */
491 TRUE), /* pcrel_offset */
492 HOWTO (R_C6000_COPY, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_dont,/* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_C6000_COPY", /* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
505 HOWTO (R_C6000_JUMP_SLOT, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_dont,/* complain_on_overflow */
512 bfd_elf_generic_reloc, /* special_function */
513 "R_C6000_JUMP_SLOT", /* name */
514 FALSE, /* partial_inplace */
515 0, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518 HOWTO (R_C6000_EHTYPE, /* type */
519 0, /* rightshift */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
521 32, /* bitsize */
522 FALSE, /* pc_relative */
523 0, /* bitpos */
524 complain_overflow_dont,/* complain_on_overflow */
525 bfd_elf_generic_reloc, /* special_function */
526 "R_C6000_EHTYPE", /* name */
527 FALSE, /* partial_inplace */
528 0, /* src_mask */
529 0xffffffff, /* dst_mask */
530 FALSE), /* pcrel_offset */
531 HOWTO (R_C6000_PCR_H16, /* type */
532 16, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 16, /* bitsize */
535 TRUE, /* pc_relative */
536 7, /* bitpos */
537 complain_overflow_dont,/* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_C6000_PCR_H16", /* name */
540 FALSE, /* partial_inplace */
541 0, /* src_mask */
542 0x007fff80, /* dst_mask */
543 TRUE), /* pcrel_offset */
544 HOWTO (R_C6000_PCR_L16, /* type */
545 0, /* rightshift */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
547 16, /* bitsize */
548 TRUE, /* pc_relative */
549 7, /* bitpos */
550 complain_overflow_dont,/* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_C6000_PCR_L16", /* name */
553 FALSE, /* partial_inplace */
554 0, /* src_mask */
555 0x007fff80, /* dst_mask */
556 TRUE), /* pcrel_offset */
557 EMPTY_HOWTO (31),
558 EMPTY_HOWTO (32),
559 EMPTY_HOWTO (33),
560 EMPTY_HOWTO (34),
561 EMPTY_HOWTO (35),
562 EMPTY_HOWTO (36),
563 EMPTY_HOWTO (37),
564 EMPTY_HOWTO (38),
565 EMPTY_HOWTO (39),
566 EMPTY_HOWTO (40),
567 EMPTY_HOWTO (41),
568 EMPTY_HOWTO (42),
569 EMPTY_HOWTO (43),
570 EMPTY_HOWTO (44),
571 EMPTY_HOWTO (45),
572 EMPTY_HOWTO (46),
573 EMPTY_HOWTO (47),
574 EMPTY_HOWTO (48),
575 EMPTY_HOWTO (49),
576 EMPTY_HOWTO (50),
577 EMPTY_HOWTO (51),
578 EMPTY_HOWTO (52),
579 EMPTY_HOWTO (53),
580 EMPTY_HOWTO (54),
581 EMPTY_HOWTO (55),
582 EMPTY_HOWTO (56),
583 EMPTY_HOWTO (57),
584 EMPTY_HOWTO (58),
585 EMPTY_HOWTO (59),
586 EMPTY_HOWTO (60),
587 EMPTY_HOWTO (61),
588 EMPTY_HOWTO (62),
589 EMPTY_HOWTO (63),
590 EMPTY_HOWTO (64),
591 EMPTY_HOWTO (65),
592 EMPTY_HOWTO (66),
593 EMPTY_HOWTO (67),
594 EMPTY_HOWTO (68),
595 EMPTY_HOWTO (69),
596 EMPTY_HOWTO (70),
597 EMPTY_HOWTO (71),
598 EMPTY_HOWTO (72),
599 EMPTY_HOWTO (73),
600 EMPTY_HOWTO (74),
601 EMPTY_HOWTO (75),
602 EMPTY_HOWTO (76),
603 EMPTY_HOWTO (77),
604 EMPTY_HOWTO (78),
605 EMPTY_HOWTO (79),
606 EMPTY_HOWTO (80),
607 EMPTY_HOWTO (81),
608 EMPTY_HOWTO (82),
609 EMPTY_HOWTO (83),
610 EMPTY_HOWTO (84),
611 EMPTY_HOWTO (85),
612 EMPTY_HOWTO (86),
613 EMPTY_HOWTO (87),
614 EMPTY_HOWTO (88),
615 EMPTY_HOWTO (89),
616 EMPTY_HOWTO (90),
617 EMPTY_HOWTO (91),
618 EMPTY_HOWTO (92),
619 EMPTY_HOWTO (93),
620 EMPTY_HOWTO (94),
621 EMPTY_HOWTO (95),
622 EMPTY_HOWTO (96),
623 EMPTY_HOWTO (97),
624 EMPTY_HOWTO (98),
625 EMPTY_HOWTO (99),
626 EMPTY_HOWTO (100),
627 EMPTY_HOWTO (101),
628 EMPTY_HOWTO (102),
629 EMPTY_HOWTO (103),
630 EMPTY_HOWTO (104),
631 EMPTY_HOWTO (105),
632 EMPTY_HOWTO (106),
633 EMPTY_HOWTO (107),
634 EMPTY_HOWTO (108),
635 EMPTY_HOWTO (109),
636 EMPTY_HOWTO (110),
637 EMPTY_HOWTO (111),
638 EMPTY_HOWTO (112),
639 EMPTY_HOWTO (113),
640 EMPTY_HOWTO (114),
641 EMPTY_HOWTO (115),
642 EMPTY_HOWTO (116),
643 EMPTY_HOWTO (117),
644 EMPTY_HOWTO (118),
645 EMPTY_HOWTO (119),
646 EMPTY_HOWTO (120),
647 EMPTY_HOWTO (121),
648 EMPTY_HOWTO (122),
649 EMPTY_HOWTO (123),
650 EMPTY_HOWTO (124),
651 EMPTY_HOWTO (125),
652 EMPTY_HOWTO (126),
653 EMPTY_HOWTO (127),
654 EMPTY_HOWTO (128),
655 EMPTY_HOWTO (129),
656 EMPTY_HOWTO (130),
657 EMPTY_HOWTO (131),
658 EMPTY_HOWTO (132),
659 EMPTY_HOWTO (133),
660 EMPTY_HOWTO (134),
661 EMPTY_HOWTO (135),
662 EMPTY_HOWTO (136),
663 EMPTY_HOWTO (137),
664 EMPTY_HOWTO (138),
665 EMPTY_HOWTO (139),
666 EMPTY_HOWTO (140),
667 EMPTY_HOWTO (141),
668 EMPTY_HOWTO (142),
669 EMPTY_HOWTO (143),
670 EMPTY_HOWTO (144),
671 EMPTY_HOWTO (145),
672 EMPTY_HOWTO (146),
673 EMPTY_HOWTO (147),
674 EMPTY_HOWTO (148),
675 EMPTY_HOWTO (149),
676 EMPTY_HOWTO (150),
677 EMPTY_HOWTO (151),
678 EMPTY_HOWTO (152),
679 EMPTY_HOWTO (153),
680 EMPTY_HOWTO (154),
681 EMPTY_HOWTO (155),
682 EMPTY_HOWTO (156),
683 EMPTY_HOWTO (157),
684 EMPTY_HOWTO (158),
685 EMPTY_HOWTO (159),
686 EMPTY_HOWTO (160),
687 EMPTY_HOWTO (161),
688 EMPTY_HOWTO (162),
689 EMPTY_HOWTO (163),
690 EMPTY_HOWTO (164),
691 EMPTY_HOWTO (165),
692 EMPTY_HOWTO (166),
693 EMPTY_HOWTO (167),
694 EMPTY_HOWTO (168),
695 EMPTY_HOWTO (169),
696 EMPTY_HOWTO (170),
697 EMPTY_HOWTO (171),
698 EMPTY_HOWTO (172),
699 EMPTY_HOWTO (173),
700 EMPTY_HOWTO (174),
701 EMPTY_HOWTO (175),
702 EMPTY_HOWTO (176),
703 EMPTY_HOWTO (177),
704 EMPTY_HOWTO (178),
705 EMPTY_HOWTO (179),
706 EMPTY_HOWTO (180),
707 EMPTY_HOWTO (181),
708 EMPTY_HOWTO (182),
709 EMPTY_HOWTO (183),
710 EMPTY_HOWTO (184),
711 EMPTY_HOWTO (185),
712 EMPTY_HOWTO (186),
713 EMPTY_HOWTO (187),
714 EMPTY_HOWTO (188),
715 EMPTY_HOWTO (189),
716 EMPTY_HOWTO (190),
717 EMPTY_HOWTO (191),
718 EMPTY_HOWTO (192),
719 EMPTY_HOWTO (193),
720 EMPTY_HOWTO (194),
721 EMPTY_HOWTO (195),
722 EMPTY_HOWTO (196),
723 EMPTY_HOWTO (197),
724 EMPTY_HOWTO (198),
725 EMPTY_HOWTO (199),
726 EMPTY_HOWTO (200),
727 EMPTY_HOWTO (201),
728 EMPTY_HOWTO (202),
729 EMPTY_HOWTO (203),
730 EMPTY_HOWTO (204),
731 EMPTY_HOWTO (205),
732 EMPTY_HOWTO (206),
733 EMPTY_HOWTO (207),
734 EMPTY_HOWTO (208),
735 EMPTY_HOWTO (209),
736 EMPTY_HOWTO (210),
737 EMPTY_HOWTO (211),
738 EMPTY_HOWTO (212),
739 EMPTY_HOWTO (213),
740 EMPTY_HOWTO (214),
741 EMPTY_HOWTO (215),
742 EMPTY_HOWTO (216),
743 EMPTY_HOWTO (217),
744 EMPTY_HOWTO (218),
745 EMPTY_HOWTO (219),
746 EMPTY_HOWTO (220),
747 EMPTY_HOWTO (221),
748 EMPTY_HOWTO (222),
749 EMPTY_HOWTO (223),
750 EMPTY_HOWTO (224),
751 EMPTY_HOWTO (225),
752 EMPTY_HOWTO (226),
753 EMPTY_HOWTO (227),
754 EMPTY_HOWTO (228),
755 EMPTY_HOWTO (229),
756 EMPTY_HOWTO (230),
757 EMPTY_HOWTO (231),
758 EMPTY_HOWTO (232),
759 EMPTY_HOWTO (233),
760 EMPTY_HOWTO (234),
761 EMPTY_HOWTO (235),
762 EMPTY_HOWTO (236),
763 EMPTY_HOWTO (237),
764 EMPTY_HOWTO (238),
765 EMPTY_HOWTO (239),
766 EMPTY_HOWTO (240),
767 EMPTY_HOWTO (241),
768 EMPTY_HOWTO (242),
769 EMPTY_HOWTO (243),
770 EMPTY_HOWTO (244),
771 EMPTY_HOWTO (245),
772 EMPTY_HOWTO (246),
773 EMPTY_HOWTO (247),
774 EMPTY_HOWTO (248),
775 EMPTY_HOWTO (249),
776 EMPTY_HOWTO (250),
777 EMPTY_HOWTO (251),
778 EMPTY_HOWTO (252),
779 HOWTO (R_C6000_ALIGN, /* type */
780 0, /* rightshift */
781 0, /* size (0 = byte, 1 = short, 2 = long) */
782 0, /* bitsize */
783 FALSE, /* pc_relative */
784 0, /* bitpos */
785 complain_overflow_dont,/* complain_on_overflow */
786 bfd_elf_generic_reloc, /* special_function */
787 "R_C6000_ALIGN", /* name */
788 FALSE, /* partial_inplace */
789 0, /* src_mask */
790 0, /* dst_mask */
791 FALSE), /* pcrel_offset */
792 HOWTO (R_C6000_FPHEAD, /* type */
793 0, /* rightshift */
794 0, /* size (0 = byte, 1 = short, 2 = long) */
795 0, /* bitsize */
796 FALSE, /* pc_relative */
797 0, /* bitpos */
798 complain_overflow_dont,/* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_C6000_FPHEAD", /* name */
801 FALSE, /* partial_inplace */
802 0, /* src_mask */
803 0, /* dst_mask */
804 FALSE), /* pcrel_offset */
805 HOWTO (R_C6000_NOCMP, /* type */
806 0, /* rightshift */
807 0, /* size (0 = byte, 1 = short, 2 = long) */
808 0, /* bitsize */
809 FALSE, /* pc_relative */
810 0, /* bitpos */
811 complain_overflow_dont,/* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_C6000_NOCMP", /* name */
814 FALSE, /* partial_inplace */
815 0, /* src_mask */
816 0, /* dst_mask */
817 FALSE) /* pcrel_offset */
818 };
819
820 static reloc_howto_type elf32_tic6x_howto_table_rel[] =
821 {
822 HOWTO (R_C6000_NONE, /* type */
823 0, /* rightshift */
824 0, /* size (0 = byte, 1 = short, 2 = long) */
825 0, /* bitsize */
826 FALSE, /* pc_relative */
827 0, /* bitpos */
828 complain_overflow_dont,/* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_C6000_NONE", /* name */
831 TRUE, /* partial_inplace */
832 0, /* src_mask */
833 0, /* dst_mask */
834 FALSE), /* pcrel_offset */
835 HOWTO (R_C6000_ABS32, /* type */
836 0, /* rightshift */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
838 32, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont,/* complain_on_overflow */
842 bfd_elf_generic_reloc, /* special_function */
843 "R_C6000_ABS32", /* name */
844 TRUE, /* partial_inplace */
845 0xffffffff, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848 HOWTO (R_C6000_ABS16, /* type */
849 0, /* rightshift */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
851 16, /* bitsize */
852 FALSE, /* pc_relative */
853 0, /* bitpos */
854 complain_overflow_bitfield,/* complain_on_overflow */
855 bfd_elf_generic_reloc, /* special_function */
856 "R_C6000_ABS16", /* name */
857 TRUE, /* partial_inplace */
858 0x0000ffff, /* src_mask */
859 0x0000ffff, /* dst_mask */
860 FALSE), /* pcrel_offset */
861 HOWTO (R_C6000_ABS8, /* type */
862 0, /* rightshift */
863 0, /* size (0 = byte, 1 = short, 2 = long) */
864 8, /* bitsize */
865 FALSE, /* pc_relative */
866 0, /* bitpos */
867 complain_overflow_bitfield,/* complain_on_overflow */
868 bfd_elf_generic_reloc, /* special_function */
869 "R_C6000_ABS8", /* name */
870 TRUE, /* partial_inplace */
871 0x000000ff, /* src_mask */
872 0x000000ff, /* dst_mask */
873 FALSE), /* pcrel_offset */
874 HOWTO (R_C6000_PCR_S21, /* type */
875 2, /* rightshift */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
877 21, /* bitsize */
878 TRUE, /* pc_relative */
879 7, /* bitpos */
880 complain_overflow_signed,/* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_C6000_PCR_S21", /* name */
883 TRUE, /* partial_inplace */
884 0x0fffff80, /* src_mask */
885 0x0fffff80, /* dst_mask */
886 TRUE), /* pcrel_offset */
887 HOWTO (R_C6000_PCR_S12, /* type */
888 2, /* rightshift */
889 2, /* size (0 = byte, 1 = short, 2 = long) */
890 12, /* bitsize */
891 TRUE, /* pc_relative */
892 16, /* bitpos */
893 complain_overflow_signed,/* complain_on_overflow */
894 bfd_elf_generic_reloc, /* special_function */
895 "R_C6000_PCR_S12", /* name */
896 TRUE, /* partial_inplace */
897 0x0fff0000, /* src_mask */
898 0x0fff0000, /* dst_mask */
899 TRUE), /* pcrel_offset */
900 HOWTO (R_C6000_PCR_S10, /* type */
901 2, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 10, /* bitsize */
904 TRUE, /* pc_relative */
905 13, /* bitpos */
906 complain_overflow_signed,/* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_C6000_PCR_S10", /* name */
909 TRUE, /* partial_inplace */
910 0x007fe000, /* src_mask */
911 0x007fe000, /* dst_mask */
912 TRUE), /* pcrel_offset */
913 HOWTO (R_C6000_PCR_S7, /* type */
914 2, /* rightshift */
915 2, /* size (0 = byte, 1 = short, 2 = long) */
916 7, /* bitsize */
917 TRUE, /* pc_relative */
918 16, /* bitpos */
919 complain_overflow_signed,/* complain_on_overflow */
920 bfd_elf_generic_reloc, /* special_function */
921 "R_C6000_PCR_S7", /* name */
922 TRUE, /* partial_inplace */
923 0x007f0000, /* src_mask */
924 0x007f0000, /* dst_mask */
925 TRUE), /* pcrel_offset */
926 HOWTO (R_C6000_ABS_S16, /* type */
927 0, /* rightshift */
928 2, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
930 FALSE, /* pc_relative */
931 7, /* bitpos */
932 complain_overflow_signed,/* complain_on_overflow */
933 bfd_elf_generic_reloc, /* special_function */
934 "R_C6000_ABS_S16", /* name */
935 TRUE, /* partial_inplace */
936 0x007fff80, /* src_mask */
937 0x007fff80, /* dst_mask */
938 FALSE), /* pcrel_offset */
939 HOWTO (R_C6000_ABS_L16, /* type */
940 0, /* rightshift */
941 2, /* size (0 = byte, 1 = short, 2 = long) */
942 16, /* bitsize */
943 FALSE, /* pc_relative */
944 7, /* bitpos */
945 complain_overflow_dont,/* complain_on_overflow */
946 bfd_elf_generic_reloc, /* special_function */
947 "R_C6000_ABS_L16", /* name */
948 TRUE, /* partial_inplace */
949 0x007fff80, /* src_mask */
950 0x007fff80, /* dst_mask */
951 FALSE), /* pcrel_offset */
952 EMPTY_HOWTO (R_C6000_ABS_H16),
953 HOWTO (R_C6000_SBR_U15_B, /* type */
954 0, /* rightshift */
955 2, /* size (0 = byte, 1 = short, 2 = long) */
956 15, /* bitsize */
957 FALSE, /* pc_relative */
958 8, /* bitpos */
959 complain_overflow_unsigned,/* complain_on_overflow */
960 bfd_elf_generic_reloc, /* special_function */
961 "R_C6000_SBR_U15_B", /* name */
962 TRUE, /* partial_inplace */
963 0x007fff00, /* src_mask */
964 0x007fff00, /* dst_mask */
965 FALSE), /* pcrel_offset */
966 HOWTO (R_C6000_SBR_U15_H, /* type */
967 1, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 15, /* bitsize */
970 FALSE, /* pc_relative */
971 8, /* bitpos */
972 complain_overflow_unsigned,/* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_C6000_SBR_U15_H", /* name */
975 TRUE, /* partial_inplace */
976 0x007fff00, /* src_mask */
977 0x007fff00, /* dst_mask */
978 FALSE), /* pcrel_offset */
979 HOWTO (R_C6000_SBR_U15_W, /* type */
980 2, /* rightshift */
981 2, /* size (0 = byte, 1 = short, 2 = long) */
982 15, /* bitsize */
983 FALSE, /* pc_relative */
984 8, /* bitpos */
985 complain_overflow_unsigned,/* complain_on_overflow */
986 bfd_elf_generic_reloc, /* special_function */
987 "R_C6000_SBR_U15_W", /* name */
988 TRUE, /* partial_inplace */
989 0x007fff00, /* src_mask */
990 0x007fff00, /* dst_mask */
991 FALSE), /* pcrel_offset */
992 HOWTO (R_C6000_SBR_S16, /* type */
993 0, /* rightshift */
994 2, /* size (0 = byte, 1 = short, 2 = long) */
995 16, /* bitsize */
996 FALSE, /* pc_relative */
997 7, /* bitpos */
998 complain_overflow_signed,/* complain_on_overflow */
999 bfd_elf_generic_reloc, /* special_function */
1000 "R_C6000_SBR_S16", /* name */
1001 TRUE, /* partial_inplace */
1002 0x007fff80, /* src_mask */
1003 0x007fff80, /* dst_mask */
1004 FALSE), /* pcrel_offset */
1005 HOWTO (R_C6000_SBR_L16_B, /* type */
1006 0, /* rightshift */
1007 2, /* size (0 = byte, 1 = short, 2 = long) */
1008 16, /* bitsize */
1009 FALSE, /* pc_relative */
1010 7, /* bitpos */
1011 complain_overflow_dont,/* complain_on_overflow */
1012 bfd_elf_generic_reloc, /* special_function */
1013 "R_C6000_SBR_L16_B", /* name */
1014 TRUE, /* partial_inplace */
1015 0x007fff80, /* src_mask */
1016 0x007fff80, /* dst_mask */
1017 FALSE), /* pcrel_offset */
1018 HOWTO (R_C6000_SBR_L16_H, /* type */
1019 1, /* rightshift */
1020 2, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 FALSE, /* pc_relative */
1023 7, /* bitpos */
1024 complain_overflow_dont,/* complain_on_overflow */
1025 bfd_elf_generic_reloc, /* special_function */
1026 "R_C6000_SBR_L16_H", /* name */
1027 TRUE, /* partial_inplace */
1028 0x007fff80, /* src_mask */
1029 0x007fff80, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1031 HOWTO (R_C6000_SBR_L16_W, /* type */
1032 2, /* rightshift */
1033 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 16, /* bitsize */
1035 FALSE, /* pc_relative */
1036 7, /* bitpos */
1037 complain_overflow_dont,/* complain_on_overflow */
1038 bfd_elf_generic_reloc, /* special_function */
1039 "R_C6000_SBR_L16_W", /* name */
1040 TRUE, /* partial_inplace */
1041 0x007fff80, /* src_mask */
1042 0x007fff80, /* dst_mask */
1043 FALSE), /* pcrel_offset */
1044 EMPTY_HOWTO (R_C6000_SBR_H16_B),
1045 EMPTY_HOWTO (R_C6000_SBR_H16_H),
1046 EMPTY_HOWTO (R_C6000_SBR_H16_W),
1047 HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
1048 2, /* rightshift */
1049 2, /* size (0 = byte, 1 = short, 2 = long) */
1050 15, /* bitsize */
1051 FALSE, /* pc_relative */
1052 8, /* bitpos */
1053 complain_overflow_unsigned,/* complain_on_overflow */
1054 bfd_elf_generic_reloc, /* special_function */
1055 "R_C6000_SBR_GOT_U15_W",/* name */
1056 TRUE, /* partial_inplace */
1057 0x007fff00, /* src_mask */
1058 0x007fff00, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1060 HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
1061 2, /* rightshift */
1062 2, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
1064 FALSE, /* pc_relative */
1065 7, /* bitpos */
1066 complain_overflow_dont,/* complain_on_overflow */
1067 bfd_elf_generic_reloc, /* special_function */
1068 "R_C6000_SBR_GOT_L16_W",/* name */
1069 TRUE, /* partial_inplace */
1070 0x007fff80, /* src_mask */
1071 0x007fff80, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1073 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W),
1074 HOWTO (R_C6000_DSBT_INDEX, /* type */
1075 0, /* rightshift */
1076 2, /* size (0 = byte, 1 = short, 2 = long) */
1077 15, /* bitsize */
1078 FALSE, /* pc_relative */
1079 8, /* bitpos */
1080 complain_overflow_unsigned,/* complain_on_overflow */
1081 bfd_elf_generic_reloc, /* special_function */
1082 "R_C6000_DSBT_INDEX", /* name */
1083 TRUE, /* partial_inplace */
1084 0, /* src_mask */
1085 0x007fff00, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1087 HOWTO (R_C6000_PREL31, /* type */
1088 1, /* rightshift */
1089 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 31, /* bitsize */
1091 TRUE, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont,/* complain_on_overflow */
1094 bfd_elf_generic_reloc, /* special_function */
1095 "R_C6000_PREL31", /* name */
1096 TRUE, /* partial_inplace */
1097 0, /* src_mask */
1098 0x7fffffff, /* dst_mask */
1099 TRUE), /* pcrel_offset */
1100 HOWTO (R_C6000_COPY, /* type */
1101 0, /* rightshift */
1102 2, /* size (0 = byte, 1 = short, 2 = long) */
1103 32, /* bitsize */
1104 FALSE, /* pc_relative */
1105 0, /* bitpos */
1106 complain_overflow_dont,/* complain_on_overflow */
1107 bfd_elf_generic_reloc, /* special_function */
1108 "R_C6000_COPY", /* name */
1109 TRUE, /* partial_inplace */
1110 0, /* src_mask */
1111 0xffffffff, /* dst_mask */
1112 FALSE), /* pcrel_offset */
1113 HOWTO (R_C6000_JUMP_SLOT, /* type */
1114 0, /* rightshift */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 32, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_dont,/* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
1121 "R_C6000_JUMP_SLOT", /* name */
1122 FALSE, /* partial_inplace */
1123 0, /* src_mask */
1124 0xffffffff, /* dst_mask */
1125 FALSE), /* pcrel_offset */
1126 HOWTO (R_C6000_EHTYPE, /* type */
1127 0, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 32, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont,/* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_C6000_EHTYPE", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xffffffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139 EMPTY_HOWTO (R_C6000_PCR_H16),
1140 EMPTY_HOWTO (R_C6000_PCR_L16),
1141 EMPTY_HOWTO (31),
1142 EMPTY_HOWTO (32),
1143 EMPTY_HOWTO (33),
1144 EMPTY_HOWTO (34),
1145 EMPTY_HOWTO (35),
1146 EMPTY_HOWTO (36),
1147 EMPTY_HOWTO (37),
1148 EMPTY_HOWTO (38),
1149 EMPTY_HOWTO (39),
1150 EMPTY_HOWTO (40),
1151 EMPTY_HOWTO (41),
1152 EMPTY_HOWTO (42),
1153 EMPTY_HOWTO (43),
1154 EMPTY_HOWTO (44),
1155 EMPTY_HOWTO (45),
1156 EMPTY_HOWTO (46),
1157 EMPTY_HOWTO (47),
1158 EMPTY_HOWTO (48),
1159 EMPTY_HOWTO (49),
1160 EMPTY_HOWTO (50),
1161 EMPTY_HOWTO (51),
1162 EMPTY_HOWTO (52),
1163 EMPTY_HOWTO (53),
1164 EMPTY_HOWTO (54),
1165 EMPTY_HOWTO (55),
1166 EMPTY_HOWTO (56),
1167 EMPTY_HOWTO (57),
1168 EMPTY_HOWTO (58),
1169 EMPTY_HOWTO (59),
1170 EMPTY_HOWTO (60),
1171 EMPTY_HOWTO (61),
1172 EMPTY_HOWTO (62),
1173 EMPTY_HOWTO (63),
1174 EMPTY_HOWTO (64),
1175 EMPTY_HOWTO (65),
1176 EMPTY_HOWTO (66),
1177 EMPTY_HOWTO (67),
1178 EMPTY_HOWTO (68),
1179 EMPTY_HOWTO (69),
1180 EMPTY_HOWTO (70),
1181 EMPTY_HOWTO (71),
1182 EMPTY_HOWTO (72),
1183 EMPTY_HOWTO (73),
1184 EMPTY_HOWTO (74),
1185 EMPTY_HOWTO (75),
1186 EMPTY_HOWTO (76),
1187 EMPTY_HOWTO (77),
1188 EMPTY_HOWTO (78),
1189 EMPTY_HOWTO (79),
1190 EMPTY_HOWTO (80),
1191 EMPTY_HOWTO (81),
1192 EMPTY_HOWTO (82),
1193 EMPTY_HOWTO (83),
1194 EMPTY_HOWTO (84),
1195 EMPTY_HOWTO (85),
1196 EMPTY_HOWTO (86),
1197 EMPTY_HOWTO (87),
1198 EMPTY_HOWTO (88),
1199 EMPTY_HOWTO (89),
1200 EMPTY_HOWTO (90),
1201 EMPTY_HOWTO (91),
1202 EMPTY_HOWTO (92),
1203 EMPTY_HOWTO (93),
1204 EMPTY_HOWTO (94),
1205 EMPTY_HOWTO (95),
1206 EMPTY_HOWTO (96),
1207 EMPTY_HOWTO (97),
1208 EMPTY_HOWTO (98),
1209 EMPTY_HOWTO (99),
1210 EMPTY_HOWTO (100),
1211 EMPTY_HOWTO (101),
1212 EMPTY_HOWTO (102),
1213 EMPTY_HOWTO (103),
1214 EMPTY_HOWTO (104),
1215 EMPTY_HOWTO (105),
1216 EMPTY_HOWTO (106),
1217 EMPTY_HOWTO (107),
1218 EMPTY_HOWTO (108),
1219 EMPTY_HOWTO (109),
1220 EMPTY_HOWTO (110),
1221 EMPTY_HOWTO (111),
1222 EMPTY_HOWTO (112),
1223 EMPTY_HOWTO (113),
1224 EMPTY_HOWTO (114),
1225 EMPTY_HOWTO (115),
1226 EMPTY_HOWTO (116),
1227 EMPTY_HOWTO (117),
1228 EMPTY_HOWTO (118),
1229 EMPTY_HOWTO (119),
1230 EMPTY_HOWTO (120),
1231 EMPTY_HOWTO (121),
1232 EMPTY_HOWTO (122),
1233 EMPTY_HOWTO (123),
1234 EMPTY_HOWTO (124),
1235 EMPTY_HOWTO (125),
1236 EMPTY_HOWTO (126),
1237 EMPTY_HOWTO (127),
1238 EMPTY_HOWTO (128),
1239 EMPTY_HOWTO (129),
1240 EMPTY_HOWTO (130),
1241 EMPTY_HOWTO (131),
1242 EMPTY_HOWTO (132),
1243 EMPTY_HOWTO (133),
1244 EMPTY_HOWTO (134),
1245 EMPTY_HOWTO (135),
1246 EMPTY_HOWTO (136),
1247 EMPTY_HOWTO (137),
1248 EMPTY_HOWTO (138),
1249 EMPTY_HOWTO (139),
1250 EMPTY_HOWTO (140),
1251 EMPTY_HOWTO (141),
1252 EMPTY_HOWTO (142),
1253 EMPTY_HOWTO (143),
1254 EMPTY_HOWTO (144),
1255 EMPTY_HOWTO (145),
1256 EMPTY_HOWTO (146),
1257 EMPTY_HOWTO (147),
1258 EMPTY_HOWTO (148),
1259 EMPTY_HOWTO (149),
1260 EMPTY_HOWTO (150),
1261 EMPTY_HOWTO (151),
1262 EMPTY_HOWTO (152),
1263 EMPTY_HOWTO (153),
1264 EMPTY_HOWTO (154),
1265 EMPTY_HOWTO (155),
1266 EMPTY_HOWTO (156),
1267 EMPTY_HOWTO (157),
1268 EMPTY_HOWTO (158),
1269 EMPTY_HOWTO (159),
1270 EMPTY_HOWTO (160),
1271 EMPTY_HOWTO (161),
1272 EMPTY_HOWTO (162),
1273 EMPTY_HOWTO (163),
1274 EMPTY_HOWTO (164),
1275 EMPTY_HOWTO (165),
1276 EMPTY_HOWTO (166),
1277 EMPTY_HOWTO (167),
1278 EMPTY_HOWTO (168),
1279 EMPTY_HOWTO (169),
1280 EMPTY_HOWTO (170),
1281 EMPTY_HOWTO (171),
1282 EMPTY_HOWTO (172),
1283 EMPTY_HOWTO (173),
1284 EMPTY_HOWTO (174),
1285 EMPTY_HOWTO (175),
1286 EMPTY_HOWTO (176),
1287 EMPTY_HOWTO (177),
1288 EMPTY_HOWTO (178),
1289 EMPTY_HOWTO (179),
1290 EMPTY_HOWTO (180),
1291 EMPTY_HOWTO (181),
1292 EMPTY_HOWTO (182),
1293 EMPTY_HOWTO (183),
1294 EMPTY_HOWTO (184),
1295 EMPTY_HOWTO (185),
1296 EMPTY_HOWTO (186),
1297 EMPTY_HOWTO (187),
1298 EMPTY_HOWTO (188),
1299 EMPTY_HOWTO (189),
1300 EMPTY_HOWTO (190),
1301 EMPTY_HOWTO (191),
1302 EMPTY_HOWTO (192),
1303 EMPTY_HOWTO (193),
1304 EMPTY_HOWTO (194),
1305 EMPTY_HOWTO (195),
1306 EMPTY_HOWTO (196),
1307 EMPTY_HOWTO (197),
1308 EMPTY_HOWTO (198),
1309 EMPTY_HOWTO (199),
1310 EMPTY_HOWTO (200),
1311 EMPTY_HOWTO (201),
1312 EMPTY_HOWTO (202),
1313 EMPTY_HOWTO (203),
1314 EMPTY_HOWTO (204),
1315 EMPTY_HOWTO (205),
1316 EMPTY_HOWTO (206),
1317 EMPTY_HOWTO (207),
1318 EMPTY_HOWTO (208),
1319 EMPTY_HOWTO (209),
1320 EMPTY_HOWTO (210),
1321 EMPTY_HOWTO (211),
1322 EMPTY_HOWTO (212),
1323 EMPTY_HOWTO (213),
1324 EMPTY_HOWTO (214),
1325 EMPTY_HOWTO (215),
1326 EMPTY_HOWTO (216),
1327 EMPTY_HOWTO (217),
1328 EMPTY_HOWTO (218),
1329 EMPTY_HOWTO (219),
1330 EMPTY_HOWTO (220),
1331 EMPTY_HOWTO (221),
1332 EMPTY_HOWTO (222),
1333 EMPTY_HOWTO (223),
1334 EMPTY_HOWTO (224),
1335 EMPTY_HOWTO (225),
1336 EMPTY_HOWTO (226),
1337 EMPTY_HOWTO (227),
1338 EMPTY_HOWTO (228),
1339 EMPTY_HOWTO (229),
1340 EMPTY_HOWTO (230),
1341 EMPTY_HOWTO (231),
1342 EMPTY_HOWTO (232),
1343 EMPTY_HOWTO (233),
1344 EMPTY_HOWTO (234),
1345 EMPTY_HOWTO (235),
1346 EMPTY_HOWTO (236),
1347 EMPTY_HOWTO (237),
1348 EMPTY_HOWTO (238),
1349 EMPTY_HOWTO (239),
1350 EMPTY_HOWTO (240),
1351 EMPTY_HOWTO (241),
1352 EMPTY_HOWTO (242),
1353 EMPTY_HOWTO (243),
1354 EMPTY_HOWTO (244),
1355 EMPTY_HOWTO (245),
1356 EMPTY_HOWTO (246),
1357 EMPTY_HOWTO (247),
1358 EMPTY_HOWTO (248),
1359 EMPTY_HOWTO (249),
1360 EMPTY_HOWTO (250),
1361 EMPTY_HOWTO (251),
1362 EMPTY_HOWTO (252),
1363 HOWTO (R_C6000_ALIGN, /* type */
1364 0, /* rightshift */
1365 0, /* size (0 = byte, 1 = short, 2 = long) */
1366 0, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_dont,/* complain_on_overflow */
1370 bfd_elf_generic_reloc, /* special_function */
1371 "R_C6000_ALIGN", /* name */
1372 TRUE, /* partial_inplace */
1373 0, /* src_mask */
1374 0, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376 HOWTO (R_C6000_FPHEAD, /* type */
1377 0, /* rightshift */
1378 0, /* size (0 = byte, 1 = short, 2 = long) */
1379 0, /* bitsize */
1380 FALSE, /* pc_relative */
1381 0, /* bitpos */
1382 complain_overflow_dont,/* complain_on_overflow */
1383 bfd_elf_generic_reloc, /* special_function */
1384 "R_C6000_FPHEAD", /* name */
1385 TRUE, /* partial_inplace */
1386 0, /* src_mask */
1387 0, /* dst_mask */
1388 FALSE), /* pcrel_offset */
1389 HOWTO (R_C6000_NOCMP, /* type */
1390 0, /* rightshift */
1391 0, /* size (0 = byte, 1 = short, 2 = long) */
1392 0, /* bitsize */
1393 FALSE, /* pc_relative */
1394 0, /* bitpos */
1395 complain_overflow_dont,/* complain_on_overflow */
1396 bfd_elf_generic_reloc, /* special_function */
1397 "R_C6000_NOCMP", /* name */
1398 TRUE, /* partial_inplace */
1399 0, /* src_mask */
1400 0, /* dst_mask */
1401 FALSE) /* pcrel_offset */
1402 };
1403
1404 /* Map BFD relocations to ELF relocations. */
1405
1406 typedef struct
1407 {
1408 bfd_reloc_code_real_type bfd_reloc_val;
1409 enum elf_tic6x_reloc_type elf_reloc_val;
1410 } tic6x_reloc_map;
1411
1412 static const tic6x_reloc_map elf32_tic6x_reloc_map[] =
1413 {
1414 { BFD_RELOC_NONE, R_C6000_NONE },
1415 { BFD_RELOC_32, R_C6000_ABS32 },
1416 { BFD_RELOC_16, R_C6000_ABS16 },
1417 { BFD_RELOC_8, R_C6000_ABS8 },
1418 { BFD_RELOC_C6000_PCR_S21, R_C6000_PCR_S21 },
1419 { BFD_RELOC_C6000_PCR_S12, R_C6000_PCR_S12 },
1420 { BFD_RELOC_C6000_PCR_S10, R_C6000_PCR_S10 },
1421 { BFD_RELOC_C6000_PCR_S7, R_C6000_PCR_S7 },
1422 { BFD_RELOC_C6000_ABS_S16, R_C6000_ABS_S16 },
1423 { BFD_RELOC_C6000_ABS_L16, R_C6000_ABS_L16 },
1424 { BFD_RELOC_C6000_ABS_H16, R_C6000_ABS_H16 },
1425 { BFD_RELOC_C6000_SBR_U15_B, R_C6000_SBR_U15_B },
1426 { BFD_RELOC_C6000_SBR_U15_H, R_C6000_SBR_U15_H },
1427 { BFD_RELOC_C6000_SBR_U15_W, R_C6000_SBR_U15_W },
1428 { BFD_RELOC_C6000_SBR_S16, R_C6000_SBR_S16 },
1429 { BFD_RELOC_C6000_SBR_L16_B, R_C6000_SBR_L16_B },
1430 { BFD_RELOC_C6000_SBR_L16_H, R_C6000_SBR_L16_H },
1431 { BFD_RELOC_C6000_SBR_L16_W, R_C6000_SBR_L16_W },
1432 { BFD_RELOC_C6000_SBR_H16_B, R_C6000_SBR_H16_B },
1433 { BFD_RELOC_C6000_SBR_H16_H, R_C6000_SBR_H16_H },
1434 { BFD_RELOC_C6000_SBR_H16_W, R_C6000_SBR_H16_W },
1435 { BFD_RELOC_C6000_SBR_GOT_U15_W, R_C6000_SBR_GOT_U15_W },
1436 { BFD_RELOC_C6000_SBR_GOT_L16_W, R_C6000_SBR_GOT_L16_W },
1437 { BFD_RELOC_C6000_SBR_GOT_H16_W, R_C6000_SBR_GOT_H16_W },
1438 { BFD_RELOC_C6000_DSBT_INDEX, R_C6000_DSBT_INDEX },
1439 { BFD_RELOC_C6000_PREL31, R_C6000_PREL31 },
1440 { BFD_RELOC_C6000_COPY, R_C6000_COPY },
1441 { BFD_RELOC_C6000_JUMP_SLOT, R_C6000_JUMP_SLOT },
1442 { BFD_RELOC_C6000_EHTYPE, R_C6000_EHTYPE },
1443 { BFD_RELOC_C6000_PCR_H16, R_C6000_PCR_H16 },
1444 { BFD_RELOC_C6000_PCR_L16, R_C6000_PCR_L16 },
1445 { BFD_RELOC_C6000_ALIGN, R_C6000_ALIGN },
1446 { BFD_RELOC_C6000_FPHEAD, R_C6000_FPHEAD },
1447 { BFD_RELOC_C6000_NOCMP, R_C6000_NOCMP }
1448 };
1449
1450 static reloc_howto_type *
1451 elf32_tic6x_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1452 {
1453 unsigned int i;
1454
1455 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_reloc_map); i++)
1456 if (elf32_tic6x_reloc_map[i].bfd_reloc_val == code)
1457 {
1458 enum elf_tic6x_reloc_type elf_reloc_val;
1459 reloc_howto_type *howto;
1460
1461 elf_reloc_val = elf32_tic6x_reloc_map[i].elf_reloc_val;
1462 if (elf32_tic6x_tdata (abfd)->use_rela_p)
1463 howto = &elf32_tic6x_howto_table[elf_reloc_val];
1464 else
1465 howto = &elf32_tic6x_howto_table_rel[elf_reloc_val];
1466
1467 /* Some relocations are RELA-only; do not return them for
1468 REL. */
1469 if (howto->name == NULL)
1470 howto = NULL;
1471
1472 return howto;
1473 }
1474
1475 return NULL;
1476 }
1477
1478 static reloc_howto_type *
1479 elf32_tic6x_reloc_name_lookup (bfd *abfd, const char *r_name)
1480 {
1481 if (elf32_tic6x_tdata (abfd)->use_rela_p)
1482 {
1483 unsigned int i;
1484
1485 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table); i++)
1486 if (elf32_tic6x_howto_table[i].name != NULL
1487 && strcasecmp (elf32_tic6x_howto_table[i].name, r_name) == 0)
1488 return &elf32_tic6x_howto_table[i];
1489 }
1490 else
1491 {
1492 unsigned int i;
1493
1494 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table_rel); i++)
1495 if (elf32_tic6x_howto_table_rel[i].name != NULL
1496 && strcasecmp (elf32_tic6x_howto_table_rel[i].name, r_name) == 0)
1497 return &elf32_tic6x_howto_table_rel[i];
1498 }
1499
1500 return NULL;
1501 }
1502
1503 static void
1504 elf32_tic6x_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
1505 Elf_Internal_Rela *elf_reloc)
1506 {
1507 unsigned int r_type;
1508
1509 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1510 if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table))
1511 bfd_reloc->howto = NULL;
1512 else
1513 bfd_reloc->howto = &elf32_tic6x_howto_table[r_type];
1514 }
1515
1516 static void
1517 elf32_tic6x_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
1518 Elf_Internal_Rela *elf_reloc)
1519 {
1520 unsigned int r_type;
1521
1522 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1523 if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table_rel))
1524 bfd_reloc->howto = NULL;
1525 else
1526 bfd_reloc->howto = &elf32_tic6x_howto_table_rel[r_type];
1527 }
1528
1529 void
1530 elf32_tic6x_set_use_rela_p (bfd *abfd, bfd_boolean use_rela_p)
1531 {
1532 elf32_tic6x_tdata (abfd)->use_rela_p = use_rela_p;
1533 }
1534
1535 /* Create an entry in a C6X ELF linker hash table. */
1536
1537 static struct bfd_hash_entry *
1538 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry *entry,
1539 struct bfd_hash_table *table,
1540 const char *string)
1541 {
1542 /* Allocate the structure if it has not already been allocated by a
1543 subclass. */
1544 if (entry == NULL)
1545 {
1546 entry = bfd_hash_allocate (table,
1547 sizeof (struct elf32_tic6x_link_hash_entry));
1548 if (entry == NULL)
1549 return entry;
1550 }
1551
1552 /* Call the allocation method of the superclass. */
1553 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1554 if (entry != NULL)
1555 {
1556 struct elf32_tic6x_link_hash_entry *eh;
1557
1558 eh = (struct elf32_tic6x_link_hash_entry *) entry;
1559 eh->dyn_relocs = NULL;
1560 }
1561
1562 return entry;
1563 }
1564
1565 /* Create a C6X ELF linker hash table. */
1566
1567 static struct bfd_link_hash_table *
1568 elf32_tic6x_link_hash_table_create (bfd *abfd)
1569 {
1570 struct elf32_tic6x_link_hash_table *ret;
1571 bfd_size_type amt = sizeof (struct elf32_tic6x_link_hash_table);
1572
1573 ret = bfd_malloc (amt);
1574 if (ret == NULL)
1575 return NULL;
1576
1577 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1578 elf32_tic6x_link_hash_newfunc,
1579 sizeof (struct elf32_tic6x_link_hash_entry),
1580 TIC6X_ELF_DATA))
1581 {
1582 free (ret);
1583 return NULL;
1584 }
1585
1586 ret->sym_cache.abfd = NULL;
1587 ret->obfd = abfd;
1588 ret->elf.is_relocatable_executable = 1;
1589
1590 return &ret->elf.root;
1591 }
1592
1593 static bfd_boolean
1594 elf32_tic6x_final_link (bfd *abfd, struct bfd_link_info *info)
1595 {
1596 if (info->shared)
1597 {
1598 obj_attribute *out_attr;
1599 out_attr = elf_known_obj_attributes_proc (abfd);
1600 if (out_attr[Tag_ABI_PIC].i == 0)
1601 {
1602 _bfd_error_handler (_("warning: generating a shared library "
1603 "containing non-PIC code"));
1604 }
1605 if (out_attr[Tag_ABI_PID].i == 0)
1606 {
1607 _bfd_error_handler (_("warning: generating a shared library "
1608 "containing non-PID code"));
1609 }
1610 }
1611 /* Invoke the regular ELF backend linker to do all the work. */
1612 if (!bfd_elf_final_link (abfd, info))
1613 return FALSE;
1614
1615 return TRUE;
1616 }
1617
1618 /* Destroy a C6X ELF linker hash table. */
1619
1620 static void
1621 elf32_tic6x_link_hash_table_free (struct bfd_link_hash_table *hash)
1622 {
1623 _bfd_generic_link_hash_table_free (hash);
1624 }
1625
1626 /* Called to pass PARAMS to the backend. We store them in the hash table
1627 associated with INFO. */
1628
1629 void
1630 elf32_tic6x_setup (struct bfd_link_info *info,
1631 struct elf32_tic6x_params *params)
1632 {
1633 struct elf32_tic6x_link_hash_table *htab = elf32_tic6x_hash_table (info);
1634 htab->params = *params;
1635 }
1636
1637 /* Determine if we're dealing with a DSBT object. */
1638
1639 static bfd_boolean
1640 elf32_tic6x_using_dsbt (bfd *abfd)
1641 {
1642 return bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC,
1643 Tag_ABI_DSBT);
1644 }
1645
1646 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
1647 sections in DYNOBJ, and set up shortcuts to them in our hash
1648 table. */
1649
1650 static bfd_boolean
1651 elf32_tic6x_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
1652 {
1653 struct elf32_tic6x_link_hash_table *htab;
1654 flagword flags;
1655
1656 htab = elf32_tic6x_hash_table (info);
1657 if (htab == NULL)
1658 return FALSE;
1659
1660 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1661 return FALSE;
1662
1663 /* Create .dsbt */
1664 flags = (SEC_ALLOC | SEC_LOAD
1665 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1666 htab->dsbt = bfd_make_section_anyway_with_flags (dynobj, ".dsbt",
1667 flags);
1668 if (htab->dsbt == NULL
1669 || ! bfd_set_section_alignment (dynobj, htab->dsbt, 2)
1670 || ! bfd_set_section_alignment (dynobj, htab->elf.splt, 5))
1671 return FALSE;
1672
1673 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1674 if (!info->shared)
1675 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1676
1677 if (!htab->sdynbss
1678 || (!info->shared && !htab->srelbss))
1679 abort ();
1680
1681 return TRUE;
1682 }
1683
1684 static bfd_boolean
1685 elf32_tic6x_mkobject (bfd *abfd)
1686 {
1687 bfd_boolean ret;
1688
1689 ret = bfd_elf_allocate_object (abfd, sizeof (struct elf32_tic6x_obj_tdata),
1690 TIC6X_ELF_DATA);
1691 if (ret)
1692 elf32_tic6x_set_use_rela_p (abfd, TRUE);
1693 return ret;
1694 }
1695
1696 /* Install relocation RELA into section SRELA, incrementing its
1697 reloc_count. */
1698
1699 static void
1700 elf32_tic6x_install_rela (bfd *output_bfd, asection *srela,
1701 Elf_Internal_Rela *rela)
1702 {
1703 bfd_byte *loc;
1704 bfd_vma off = srela->reloc_count++ * sizeof (Elf32_External_Rela);
1705 loc = srela->contents + off;
1706 BFD_ASSERT (off < srela->size);
1707 bfd_elf32_swap_reloca_out (output_bfd, rela, loc);
1708 }
1709
1710 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents
1711 of the GOT at this offset have been initialized with the relocation. */
1712
1713 static void
1714 elf32_tic6x_make_got_dynreloc (bfd *output_bfd,
1715 struct elf32_tic6x_link_hash_table *htab,
1716 asection *sym_sec, bfd_vma offset)
1717 {
1718 asection *sgot = htab->elf.sgot;
1719 Elf_Internal_Rela outrel;
1720 int dynindx;
1721
1722 outrel.r_offset = sgot->output_section->vma + sgot->output_offset + offset;
1723 outrel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
1724 if (sym_sec && sym_sec->output_section
1725 && ! bfd_is_abs_section (sym_sec->output_section)
1726 && ! bfd_is_und_section (sym_sec->output_section))
1727 {
1728 dynindx = elf_section_data (sym_sec->output_section)->dynindx;
1729 outrel.r_addend -= sym_sec->output_section->vma;
1730 }
1731 else
1732 {
1733 dynindx = 0;
1734 }
1735 outrel.r_info = ELF32_R_INFO (dynindx, R_C6000_ABS32);
1736 elf32_tic6x_install_rela (output_bfd, htab->elf.srelgot, &outrel);
1737 }
1738
1739 /* Finish up dynamic symbol handling. We set the contents of various
1740 dynamic sections here. */
1741
1742 static bfd_boolean
1743 elf32_tic6x_finish_dynamic_symbol (bfd * output_bfd,
1744 struct bfd_link_info *info,
1745 struct elf_link_hash_entry *h,
1746 Elf_Internal_Sym * sym)
1747 {
1748 bfd *dynobj;
1749 struct elf32_tic6x_link_hash_table *htab;
1750
1751 htab = elf32_tic6x_hash_table (info);
1752 dynobj = htab->elf.dynobj;
1753
1754 if (h->plt.offset != (bfd_vma) -1)
1755 {
1756 bfd_vma plt_index;
1757 bfd_vma got_section_offset, got_dp_offset, rela_offset;
1758 Elf_Internal_Rela rela;
1759 bfd_byte *loc;
1760 asection *plt, *gotplt, *relplt;
1761 const struct elf_backend_data *bed;
1762
1763 bed = get_elf_backend_data (output_bfd);
1764
1765 BFD_ASSERT (htab->elf.splt != NULL);
1766 plt = htab->elf.splt;
1767 gotplt = htab->elf.sgotplt;
1768 relplt = htab->elf.srelplt;
1769
1770 /* This symbol has an entry in the procedure linkage table. Set
1771 it up. */
1772
1773 if ((h->dynindx == -1
1774 && !((h->forced_local || info->executable)
1775 && h->def_regular
1776 && h->type == STT_GNU_IFUNC))
1777 || plt == NULL
1778 || gotplt == NULL
1779 || relplt == NULL)
1780 abort ();
1781
1782 /* Get the index in the procedure linkage table which
1783 corresponds to this symbol. This is the index of this symbol
1784 in all the symbols for which we are making plt entries. The
1785 first entry in the procedure linkage table is reserved.
1786
1787 Get the offset into the .got table of the entry that
1788 corresponds to this function. Each .got entry is 4 bytes.
1789 The first three are reserved.
1790
1791 For static executables, we don't reserve anything. */
1792
1793 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1794 got_section_offset = plt_index + bed->got_header_size / 4;
1795 got_dp_offset = got_section_offset + htab->params.dsbt_size;
1796 rela_offset = plt_index * sizeof (Elf32_External_Rela);
1797
1798 got_section_offset *= 4;
1799
1800 /* Fill in the entry in the procedure linkage table. */
1801
1802 /* ldw .d2t2 *+B14($GOT(f)), b2 */
1803 bfd_put_32 (output_bfd, got_dp_offset << 8 | 0x0100006e,
1804 plt->contents + h->plt.offset);
1805 /* mvk .s2 low(rela_offset), b0 */
1806 bfd_put_32 (output_bfd, (rela_offset & 0xffff) << 7 | 0x0000002a,
1807 plt->contents + h->plt.offset + 4);
1808 /* mvkh .s2 high(rela_offset), b0 */
1809 bfd_put_32 (output_bfd, ((rela_offset >> 16) & 0xffff) << 7 | 0x0000006a,
1810 plt->contents + h->plt.offset + 8);
1811 /* nop 2 */
1812 bfd_put_32 (output_bfd, 0x00002000,
1813 plt->contents + h->plt.offset + 12);
1814 /* b .s2 b2 */
1815 bfd_put_32 (output_bfd, 0x00080362,
1816 plt->contents + h->plt.offset + 16);
1817 /* nop 5 */
1818 bfd_put_32 (output_bfd, 0x00008000,
1819 plt->contents + h->plt.offset + 20);
1820
1821 /* Fill in the entry in the global offset table. */
1822 bfd_put_32 (output_bfd,
1823 (plt->output_section->vma + plt->output_offset),
1824 gotplt->contents + got_section_offset);
1825
1826 /* Fill in the entry in the .rel.plt section. */
1827 rela.r_offset = (gotplt->output_section->vma
1828 + gotplt->output_offset
1829 + got_section_offset);
1830 rela.r_info = ELF32_R_INFO (h->dynindx, R_C6000_JUMP_SLOT);
1831 rela.r_addend = 0;
1832 loc = relplt->contents + rela_offset;
1833 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1834
1835 if (!h->def_regular)
1836 {
1837 /* Mark the symbol as undefined, rather than as defined in
1838 the .plt section. */
1839 sym->st_shndx = SHN_UNDEF;
1840 sym->st_value = 0;
1841 }
1842 }
1843
1844 if (h->got.offset != (bfd_vma) -1)
1845 {
1846 asection *sgot;
1847 asection *srela;
1848
1849 /* This symbol has an entry in the global offset table.
1850 Set it up. */
1851
1852 sgot = bfd_get_section_by_name (dynobj, ".got");
1853 srela = bfd_get_section_by_name (dynobj, ".rela.got");
1854 BFD_ASSERT (sgot != NULL && srela != NULL);
1855
1856 /* If this is a -Bsymbolic link, and the symbol is defined
1857 locally, we just want to emit a RELATIVE reloc. Likewise if
1858 the symbol was forced to be local because of a version file.
1859 The entry in the global offset table will already have been
1860 initialized in the relocate_section function. */
1861 if (info->shared
1862 && (info->symbolic
1863 || h->dynindx == -1 || h->forced_local) && h->def_regular)
1864 {
1865 asection *s = h->root.u.def.section;
1866 elf32_tic6x_make_got_dynreloc (output_bfd, htab, s,
1867 h->got.offset & ~(bfd_vma) 1);
1868 }
1869 else
1870 {
1871 Elf_Internal_Rela outrel;
1872 bfd_put_32 (output_bfd, (bfd_vma) 0,
1873 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
1874 outrel.r_offset = (sgot->output_section->vma
1875 + sgot->output_offset
1876 + (h->got.offset & ~(bfd_vma) 1));
1877 outrel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_ABS32);
1878 outrel.r_addend = 0;
1879
1880 elf32_tic6x_install_rela (output_bfd, srela, &outrel);
1881 }
1882 }
1883
1884 if (h->needs_copy)
1885 {
1886 Elf_Internal_Rela rel;
1887
1888 /* This symbol needs a copy reloc. Set it up. */
1889
1890 if (h->dynindx == -1
1891 || (h->root.type != bfd_link_hash_defined
1892 && h->root.type != bfd_link_hash_defweak)
1893 || htab->srelbss == NULL)
1894 abort ();
1895
1896 rel.r_offset = (h->root.u.def.value
1897 + h->root.u.def.section->output_section->vma
1898 + h->root.u.def.section->output_offset);
1899 rel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_COPY);
1900 rel.r_addend = 0;
1901
1902 elf32_tic6x_install_rela (output_bfd, htab->srelbss, &rel);
1903 }
1904
1905 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1906 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1907 || h == elf_hash_table (info)->hgot)
1908 sym->st_shndx = SHN_ABS;
1909
1910 return TRUE;
1911 }
1912
1913 /* Unwinding tables are not referenced directly. This pass marks them as
1914 required if the corresponding code section is marked. */
1915
1916 static bfd_boolean
1917 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info *info,
1918 elf_gc_mark_hook_fn gc_mark_hook)
1919 {
1920 bfd *sub;
1921 Elf_Internal_Shdr **elf_shdrp;
1922 bfd_boolean again;
1923
1924 _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook);
1925
1926 /* Marking EH data may cause additional code sections to be marked,
1927 requiring multiple passes. */
1928 again = TRUE;
1929 while (again)
1930 {
1931 again = FALSE;
1932 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
1933 {
1934 asection *o;
1935
1936 if (! is_tic6x_elf (sub))
1937 continue;
1938
1939 elf_shdrp = elf_elfsections (sub);
1940 for (o = sub->sections; o != NULL; o = o->next)
1941 {
1942 Elf_Internal_Shdr *hdr;
1943
1944 hdr = &elf_section_data (o)->this_hdr;
1945 if (hdr->sh_type == SHT_C6000_UNWIND
1946 && hdr->sh_link
1947 && hdr->sh_link < elf_numsections (sub)
1948 && !o->gc_mark
1949 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
1950 {
1951 again = TRUE;
1952 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
1953 return FALSE;
1954 }
1955 }
1956 }
1957 }
1958
1959 return TRUE;
1960 }
1961
1962 /* Return TRUE if this is an unwinding table index. */
1963
1964 static bfd_boolean
1965 is_tic6x_elf_unwind_section_name (const char *name)
1966 {
1967 return (CONST_STRNEQ (name, ELF_STRING_C6000_unwind)
1968 || CONST_STRNEQ (name, ELF_STRING_C6000_unwind_once));
1969 }
1970
1971
1972 /* Set the type and flags for an unwinding index table. We do this by
1973 the section name, which is a hack, but ought to work. */
1974
1975 static bfd_boolean
1976 elf32_tic6x_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1977 Elf_Internal_Shdr *hdr, asection *sec)
1978 {
1979 const char * name;
1980
1981 name = bfd_get_section_name (abfd, sec);
1982
1983 if (is_tic6x_elf_unwind_section_name (name))
1984 {
1985 hdr->sh_type = SHT_C6000_UNWIND;
1986 hdr->sh_flags |= SHF_LINK_ORDER;
1987 }
1988
1989 return TRUE;
1990 }
1991
1992 /* Update the got entry reference counts for the section being removed. */
1993
1994 static bfd_boolean
1995 elf32_tic6x_gc_sweep_hook (bfd *abfd,
1996 struct bfd_link_info *info,
1997 asection *sec,
1998 const Elf_Internal_Rela *relocs)
1999 {
2000 struct elf32_tic6x_link_hash_table *htab;
2001 Elf_Internal_Shdr *symtab_hdr;
2002 struct elf_link_hash_entry **sym_hashes;
2003 bfd_signed_vma *local_got_refcounts;
2004 const Elf_Internal_Rela *rel, *relend;
2005
2006 if (info->relocatable)
2007 return TRUE;
2008
2009 htab = elf32_tic6x_hash_table (info);
2010 if (htab == NULL)
2011 return FALSE;
2012
2013 elf_section_data (sec)->local_dynrel = NULL;
2014
2015 symtab_hdr = &elf_symtab_hdr (abfd);
2016 sym_hashes = elf_sym_hashes (abfd);
2017 local_got_refcounts = elf_local_got_refcounts (abfd);
2018
2019 relend = relocs + sec->reloc_count;
2020 for (rel = relocs; rel < relend; rel++)
2021 {
2022 unsigned long r_symndx;
2023 unsigned int r_type;
2024 struct elf_link_hash_entry *h = NULL;
2025
2026 r_symndx = ELF32_R_SYM (rel->r_info);
2027 if (r_symndx >= symtab_hdr->sh_info)
2028 {
2029 struct elf32_tic6x_link_hash_entry *eh;
2030 struct elf_dyn_relocs **pp;
2031 struct elf_dyn_relocs *p;
2032
2033 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2034 while (h->root.type == bfd_link_hash_indirect
2035 || h->root.type == bfd_link_hash_warning)
2036 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2037 eh = (struct elf32_tic6x_link_hash_entry *) h;
2038
2039 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2040 if (p->sec == sec)
2041 {
2042 /* Everything must go for SEC. */
2043 *pp = p->next;
2044 break;
2045 }
2046 }
2047
2048 r_type = ELF32_R_TYPE (rel->r_info);
2049
2050 switch (r_type)
2051 {
2052 case R_C6000_SBR_GOT_U15_W:
2053 case R_C6000_SBR_GOT_L16_W:
2054 case R_C6000_SBR_GOT_H16_W:
2055 case R_C6000_EHTYPE:
2056 if (h != NULL)
2057 {
2058 if (h->got.refcount > 0)
2059 h->got.refcount -= 1;
2060 }
2061 else if (local_got_refcounts != NULL)
2062 {
2063 if (local_got_refcounts[r_symndx] > 0)
2064 local_got_refcounts[r_symndx] -= 1;
2065 }
2066 break;
2067
2068 default:
2069 break;
2070 }
2071 }
2072
2073 return TRUE;
2074 }
2075
2076 /* Adjust a symbol defined by a dynamic object and referenced by a
2077 regular object. The current definition is in some section of the
2078 dynamic object, but we're not including those sections. We have to
2079 change the definition to something the rest of the link can
2080 understand. */
2081
2082 static bfd_boolean
2083 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info *info,
2084 struct elf_link_hash_entry *h)
2085 {
2086 struct elf32_tic6x_link_hash_table *htab;
2087 bfd *dynobj;
2088 asection *s;
2089
2090 dynobj = elf_hash_table (info)->dynobj;
2091
2092 /* Make sure we know what is going on here. */
2093 BFD_ASSERT (dynobj != NULL
2094 && (h->needs_plt
2095 || h->u.weakdef != NULL
2096 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
2097
2098 /* If this is a function, put it in the procedure linkage table. We
2099 will fill in the contents of the procedure linkage table later,
2100 when we know the address of the .got section. */
2101 if (h->type == STT_FUNC
2102 || h->needs_plt)
2103 {
2104 if (h->plt.refcount <= 0
2105 || SYMBOL_CALLS_LOCAL (info, h)
2106 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2107 && h->root.type == bfd_link_hash_undefweak))
2108 {
2109 /* This case can occur if we saw a PLT32 reloc in an input
2110 file, but the symbol was never referred to by a dynamic
2111 object, or if all references were garbage collected. In
2112 such a case, we don't actually need to build a procedure
2113 linkage table, and we can just do a PC32 reloc instead. */
2114 h->plt.offset = (bfd_vma) -1;
2115 h->needs_plt = 0;
2116 }
2117
2118 return TRUE;
2119 }
2120
2121 /* If this is a weak symbol, and there is a real definition, the
2122 processor independent code will have arranged for us to see the
2123 real definition first, and we can just use the same value. */
2124 if (h->u.weakdef != NULL)
2125 {
2126 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2127 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2128 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2129 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2130 h->non_got_ref = h->u.weakdef->non_got_ref;
2131 return TRUE;
2132 }
2133
2134 /* This is a reference to a symbol defined by a dynamic object which
2135 is not a function. */
2136
2137 /* If we are creating a shared library, we must presume that the
2138 only references to the symbol are via the global offset table.
2139 For such cases we need not do anything here; the relocations will
2140 be handled correctly by relocate_section. */
2141 if (info->shared)
2142 return TRUE;
2143
2144 /* If there are no references to this symbol that do not use the
2145 GOT, we don't need to generate a copy reloc. */
2146 if (!h->non_got_ref)
2147 return TRUE;
2148
2149 /* If -z nocopyreloc was given, we won't generate them either. */
2150 if (info->nocopyreloc)
2151 {
2152 h->non_got_ref = 0;
2153 return TRUE;
2154 }
2155
2156 htab = elf32_tic6x_hash_table (info);
2157 if (htab == NULL)
2158 return FALSE;
2159
2160 /* We must allocate the symbol in our .dynbss section, which will
2161 become part of the .bss section of the executable. There will be
2162 an entry for this symbol in the .dynsym section. The dynamic
2163 object will contain position independent code, so all references
2164 from the dynamic object to this symbol will go through the global
2165 offset table. The dynamic linker will use the .dynsym entry to
2166 determine the address it must put in the global offset table, so
2167 both the dynamic object and the regular object will refer to the
2168 same memory location for the variable. */
2169
2170 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2171 copy the initial value out of the dynamic object and into the
2172 runtime process image. */
2173 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2174 {
2175 htab->srelbss->size += sizeof (Elf32_External_Rela);
2176 h->needs_copy = 1;
2177 }
2178
2179 s = htab->sdynbss;
2180
2181 return _bfd_elf_adjust_dynamic_copy (h, s);
2182 }
2183
2184 static bfd_boolean
2185 elf32_tic6x_new_section_hook (bfd *abfd, asection *sec)
2186 {
2187 bfd_boolean ret;
2188
2189 /* Allocate target specific section data. */
2190 if (!sec->used_by_bfd)
2191 {
2192 _tic6x_elf_section_data *sdata;
2193 bfd_size_type amt = sizeof (*sdata);
2194
2195 sdata = (_tic6x_elf_section_data *) bfd_zalloc (abfd, amt);
2196 if (sdata == NULL)
2197 return FALSE;
2198 sec->used_by_bfd = sdata;
2199 }
2200
2201 ret = _bfd_elf_new_section_hook (abfd, sec);
2202 sec->use_rela_p = elf32_tic6x_tdata (abfd)->use_rela_p;
2203
2204 return ret;
2205 }
2206
2207 /* Return true if relocation REL against section SEC is a REL rather
2208 than RELA relocation. RELOCS is the first relocation in the
2209 section and ABFD is the bfd that contains SEC. */
2210
2211 static bfd_boolean
2212 elf32_tic6x_rel_relocation_p (bfd *abfd, asection *sec,
2213 const Elf_Internal_Rela *relocs,
2214 const Elf_Internal_Rela *rel)
2215 {
2216 Elf_Internal_Shdr *rel_hdr;
2217 const struct elf_backend_data *bed;
2218
2219 /* To determine which flavor of relocation this is, we depend on the
2220 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2221 rel_hdr = elf_section_data (sec)->rel.hdr;
2222 if (rel_hdr == NULL)
2223 return FALSE;
2224 bed = get_elf_backend_data (abfd);
2225 return ((size_t) (rel - relocs)
2226 < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel);
2227 }
2228
2229 /* We need dynamic symbols for every section, since segments can
2230 relocate independently. */
2231 static bfd_boolean
2232 elf32_tic6x_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2233 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2234 asection *p)
2235 {
2236 switch (elf_section_data (p)->this_hdr.sh_type)
2237 {
2238 case SHT_PROGBITS:
2239 case SHT_NOBITS:
2240 /* If sh_type is yet undecided, assume it could be
2241 SHT_PROGBITS/SHT_NOBITS. */
2242 case SHT_NULL:
2243 return FALSE;
2244
2245 /* There shouldn't be section relative relocations
2246 against any other section. */
2247 default:
2248 return TRUE;
2249 }
2250 }
2251
2252 static bfd_boolean
2253 elf32_tic6x_relocate_section (bfd *output_bfd,
2254 struct bfd_link_info *info,
2255 bfd *input_bfd,
2256 asection *input_section,
2257 bfd_byte *contents,
2258 Elf_Internal_Rela *relocs,
2259 Elf_Internal_Sym *local_syms,
2260 asection **local_sections)
2261 {
2262 struct elf32_tic6x_link_hash_table *htab;
2263 Elf_Internal_Shdr *symtab_hdr;
2264 struct elf_link_hash_entry **sym_hashes;
2265 bfd_vma *local_got_offsets;
2266 Elf_Internal_Rela *rel;
2267 Elf_Internal_Rela *relend;
2268 bfd_boolean ok = TRUE;
2269
2270 htab = elf32_tic6x_hash_table (info);
2271 symtab_hdr = & elf_symtab_hdr (input_bfd);
2272 sym_hashes = elf_sym_hashes (input_bfd);
2273 local_got_offsets = elf_local_got_offsets (input_bfd);
2274
2275 relend = relocs + input_section->reloc_count;
2276
2277 for (rel = relocs; rel < relend; rel ++)
2278 {
2279 int r_type;
2280 unsigned long r_symndx;
2281 arelent bfd_reloc;
2282 reloc_howto_type *howto;
2283 Elf_Internal_Sym *sym;
2284 asection *sec;
2285 struct elf_link_hash_entry *h;
2286 bfd_vma off, off2, relocation;
2287 bfd_boolean unresolved_reloc;
2288 bfd_reloc_status_type r;
2289 struct bfd_link_hash_entry *sbh;
2290 bfd_boolean is_rel;
2291
2292 r_type = ELF32_R_TYPE (rel->r_info);
2293 r_symndx = ELF32_R_SYM (rel->r_info);
2294
2295 is_rel = elf32_tic6x_rel_relocation_p (input_bfd, input_section,
2296 relocs, rel);
2297
2298 if (is_rel)
2299 elf32_tic6x_info_to_howto_rel (input_bfd, &bfd_reloc, rel);
2300 else
2301 elf32_tic6x_info_to_howto (input_bfd, &bfd_reloc, rel);
2302 howto = bfd_reloc.howto;
2303 if (howto == NULL)
2304 {
2305 bfd_set_error (bfd_error_bad_value);
2306 return FALSE;
2307 }
2308
2309 h = NULL;
2310 sym = NULL;
2311 sec = NULL;
2312 unresolved_reloc = FALSE;
2313
2314 if (r_symndx < symtab_hdr->sh_info)
2315 {
2316 sym = local_syms + r_symndx;
2317 sec = local_sections[r_symndx];
2318 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2319 }
2320 else
2321 {
2322 bfd_boolean warned;
2323
2324 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2325 r_symndx, symtab_hdr, sym_hashes,
2326 h, sec, relocation,
2327 unresolved_reloc, warned);
2328 }
2329
2330 if (sec != NULL && discarded_section (sec))
2331 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2332 rel, relend, howto, contents);
2333
2334 if (info->relocatable)
2335 {
2336 if (is_rel
2337 && sym != NULL
2338 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2339 {
2340 rel->r_addend = 0;
2341 relocation = sec->output_offset + sym->st_value;
2342 r = _bfd_relocate_contents (howto, input_bfd, relocation,
2343 contents + rel->r_offset);
2344 goto done_reloc;
2345 }
2346 continue;
2347 }
2348
2349 switch (r_type)
2350 {
2351 case R_C6000_NONE:
2352 case R_C6000_ALIGN:
2353 case R_C6000_FPHEAD:
2354 case R_C6000_NOCMP:
2355 /* No action needed. */
2356 continue;
2357
2358 case R_C6000_PCR_S21:
2359 /* A branch to an undefined weak symbol is turned into a
2360 "b .s2 B3" instruction if the existing insn is of the
2361 form "b .s2 symbol". */
2362 if (h ? h->root.type == bfd_link_hash_undefweak
2363 && (htab->elf.splt == NULL || h->plt.offset == (bfd_vma) -1)
2364 : r_symndx != STN_UNDEF && bfd_is_und_section (sec))
2365 {
2366 unsigned long oldval;
2367 oldval = bfd_get_32 (input_bfd, contents + rel->r_offset);
2368
2369 if ((oldval & 0x7e) == 0x12)
2370 {
2371 oldval &= 0xF0000001;
2372 bfd_put_32 (input_bfd, oldval | 0x000c0362,
2373 contents + rel->r_offset);
2374 r = bfd_reloc_ok;
2375 goto done_reloc;
2376 }
2377 }
2378
2379 case R_C6000_PCR_S12:
2380 case R_C6000_PCR_S10:
2381 case R_C6000_PCR_S7:
2382 if (h != NULL
2383 && h->plt.offset != (bfd_vma) -1
2384 && htab->elf.splt != NULL)
2385 {
2386 relocation = (htab->elf.splt->output_section->vma
2387 + htab->elf.splt->output_offset
2388 + h->plt.offset);
2389 }
2390
2391 /* Generic PC-relative handling produces a value relative to
2392 the exact location of the relocation. Adjust it to be
2393 relative to the start of the fetch packet instead. */
2394 relocation += (input_section->output_section->vma
2395 + input_section->output_offset
2396 + rel->r_offset) & 0x1f;
2397 unresolved_reloc = FALSE;
2398 break;
2399
2400 case R_C6000_PCR_H16:
2401 case R_C6000_PCR_L16:
2402 off = (input_section->output_section->vma
2403 + input_section->output_offset
2404 + rel->r_offset);
2405 /* These must be calculated as R = S - FP(FP(PC) - A).
2406 PC, here, is the value we just computed in OFF. RELOCATION
2407 has the address of S + A. */
2408 relocation -= rel->r_addend;
2409 off2 = ((off & ~(bfd_vma)0x1f) - rel->r_addend) & (bfd_vma)~0x1f;
2410 off2 = relocation - off2;
2411 relocation = off + off2;
2412 break;
2413
2414 case R_C6000_DSBT_INDEX:
2415 relocation = elf32_tic6x_hash_table (info)->params.dsbt_index;
2416 if (!info->shared || relocation != 0)
2417 break;
2418
2419 /* fall through */
2420 case R_C6000_ABS32:
2421 case R_C6000_ABS16:
2422 case R_C6000_ABS8:
2423 case R_C6000_ABS_S16:
2424 case R_C6000_ABS_L16:
2425 case R_C6000_ABS_H16:
2426 /* When generating a shared object or relocatable executable, these
2427 relocations are copied into the output file to be resolved at
2428 run time. */
2429 if ((info->shared || elf32_tic6x_using_dsbt (output_bfd))
2430 && (input_section->flags & SEC_ALLOC)
2431 && (h == NULL
2432 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2433 || h->root.type != bfd_link_hash_undefweak))
2434 {
2435 Elf_Internal_Rela outrel;
2436 bfd_boolean skip, relocate;
2437 asection *sreloc;
2438
2439 unresolved_reloc = FALSE;
2440
2441 sreloc = elf_section_data (input_section)->sreloc;
2442 BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
2443
2444 skip = FALSE;
2445 relocate = FALSE;
2446
2447 outrel.r_offset =
2448 _bfd_elf_section_offset (output_bfd, info, input_section,
2449 rel->r_offset);
2450 if (outrel.r_offset == (bfd_vma) -1)
2451 skip = TRUE;
2452 else if (outrel.r_offset == (bfd_vma) -2)
2453 skip = TRUE, relocate = TRUE;
2454 outrel.r_offset += (input_section->output_section->vma
2455 + input_section->output_offset);
2456
2457 if (skip)
2458 memset (&outrel, 0, sizeof outrel);
2459 else if (h != NULL
2460 && h->dynindx != -1
2461 && (!info->shared
2462 || !info->symbolic
2463 || !h->def_regular))
2464 {
2465 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2466 outrel.r_addend = rel->r_addend;
2467 }
2468 else
2469 {
2470 long indx;
2471
2472 outrel.r_addend = relocation + rel->r_addend;
2473
2474 if (bfd_is_abs_section (sec))
2475 indx = 0;
2476 else if (sec == NULL || sec->owner == NULL)
2477 {
2478 bfd_set_error (bfd_error_bad_value);
2479 return FALSE;
2480 }
2481 else
2482 {
2483 asection *osec;
2484
2485 osec = sec->output_section;
2486 indx = elf_section_data (osec)->dynindx;
2487 outrel.r_addend -= osec->vma;
2488 BFD_ASSERT (indx != 0);
2489 }
2490
2491 outrel.r_info = ELF32_R_INFO (indx, r_type);
2492 }
2493
2494 elf32_tic6x_install_rela (output_bfd, sreloc, &outrel);
2495
2496 /* If this reloc is against an external symbol, we do not want to
2497 fiddle with the addend. Otherwise, we need to include the symbol
2498 value so that it becomes an addend for the dynamic reloc. */
2499 if (! relocate)
2500 continue;
2501 }
2502
2503 /* Generic logic OK. */
2504 break;
2505
2506 case R_C6000_SBR_U15_B:
2507 case R_C6000_SBR_U15_H:
2508 case R_C6000_SBR_U15_W:
2509 case R_C6000_SBR_S16:
2510 case R_C6000_SBR_L16_B:
2511 case R_C6000_SBR_L16_H:
2512 case R_C6000_SBR_L16_W:
2513 case R_C6000_SBR_H16_B:
2514 case R_C6000_SBR_H16_H:
2515 case R_C6000_SBR_H16_W:
2516 sbh = bfd_link_hash_lookup (info->hash, "__c6xabi_DSBT_BASE",
2517 FALSE, FALSE, TRUE);
2518 if (sbh != NULL
2519 && (sbh->type == bfd_link_hash_defined
2520 || sbh->type == bfd_link_hash_defweak))
2521 {
2522 if (h ? (h->root.type == bfd_link_hash_undefweak
2523 && (htab->elf.splt == NULL
2524 || h->plt.offset == (bfd_vma) -1))
2525 : r_symndx != STN_UNDEF && bfd_is_und_section (sec))
2526 relocation = 0;
2527 else
2528 relocation -= (sbh->u.def.value
2529 + sbh->u.def.section->output_section->vma
2530 + sbh->u.def.section->output_offset);
2531 }
2532 else
2533 {
2534 (*_bfd_error_handler) (_("%B: SB-relative relocation but "
2535 "__c6xabi_DSBT_BASE not defined"),
2536 input_bfd);
2537 ok = FALSE;
2538 continue;
2539 }
2540 break;
2541
2542 case R_C6000_SBR_GOT_U15_W:
2543 case R_C6000_SBR_GOT_L16_W:
2544 case R_C6000_SBR_GOT_H16_W:
2545 case R_C6000_EHTYPE:
2546 /* Relocation is to the entry for this symbol in the global
2547 offset table. */
2548 if (htab->elf.sgot == NULL)
2549 abort ();
2550
2551 if (h != NULL)
2552 {
2553 bfd_boolean dyn;
2554
2555 off = h->got.offset;
2556 dyn = htab->elf.dynamic_sections_created;
2557 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2558 || (info->shared
2559 && SYMBOL_REFERENCES_LOCAL (info, h))
2560 || (ELF_ST_VISIBILITY (h->other)
2561 && h->root.type == bfd_link_hash_undefweak))
2562 {
2563 /* This is actually a static link, or it is a
2564 -Bsymbolic link and the symbol is defined
2565 locally, or the symbol was forced to be local
2566 because of a version file. We must initialize
2567 this entry in the global offset table. Since the
2568 offset must always be a multiple of 4, we use the
2569 least significant bit to record whether we have
2570 initialized it already.
2571
2572 When doing a dynamic link, we create a .rel.got
2573 relocation entry to initialize the value. This
2574 is done in the finish_dynamic_symbol routine. */
2575 if ((off & 1) != 0)
2576 off &= ~1;
2577 else
2578 {
2579 bfd_put_32 (output_bfd, relocation,
2580 htab->elf.sgot->contents + off);
2581 h->got.offset |= 1;
2582
2583 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
2584 h)
2585 && !(ELF_ST_VISIBILITY (h->other)
2586 && h->root.type == bfd_link_hash_undefweak))
2587 elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec,
2588 off);
2589 }
2590 }
2591 else
2592 unresolved_reloc = FALSE;
2593 }
2594 else
2595 {
2596 if (local_got_offsets == NULL)
2597 abort ();
2598
2599 off = local_got_offsets[r_symndx];
2600
2601 /* The offset must always be a multiple of 4. We use
2602 the least significant bit to record whether we have
2603 already generated the necessary reloc. */
2604 if ((off & 1) != 0)
2605 off &= ~1;
2606 else
2607 {
2608 bfd_put_32 (output_bfd, relocation,
2609 htab->elf.sgot->contents + off);
2610
2611 if (info->shared || elf32_tic6x_using_dsbt (output_bfd))
2612 elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec, off);
2613
2614 local_got_offsets[r_symndx] |= 1;
2615 }
2616 }
2617
2618 if (off >= (bfd_vma) -2)
2619 abort ();
2620
2621 if (htab->dsbt)
2622 relocation = (htab->elf.sgot->output_section->vma
2623 + htab->elf.sgot->output_offset + off
2624 - htab->dsbt->output_section->vma
2625 - htab->dsbt->output_offset);
2626 else
2627 relocation = (htab->elf.sgot->output_section->vma
2628 + htab->elf.sgot->output_offset + off
2629 - htab->elf.sgotplt->output_section->vma
2630 - htab->elf.sgotplt->output_offset);
2631
2632 if (rel->r_addend != 0)
2633 {
2634 /* We can't do anything for a relocation which is against
2635 a symbol *plus offset*. GOT holds relocations for
2636 symbols. Make this an error; the compiler isn't
2637 allowed to pass us these kinds of things. */
2638 if (h == NULL)
2639 (*_bfd_error_handler)
2640 (_("%B, section %A: relocation %s with non-zero addend %d"
2641 " against local symbol"),
2642 input_bfd,
2643 input_section,
2644 elf32_tic6x_howto_table[r_type].name,
2645 rel->r_addend);
2646 else
2647 (*_bfd_error_handler)
2648 (_("%B, section %A: relocation %s with non-zero addend %d"
2649 " against symbol `%s'"),
2650 input_bfd,
2651 input_section,
2652 elf32_tic6x_howto_table[r_type].name,
2653 rel->r_addend,
2654 h->root.root.string[0] != '\0' ? h->root.root.string
2655 : _("[whose name is lost]"));
2656
2657 bfd_set_error (bfd_error_bad_value);
2658 return FALSE;
2659 }
2660 break;
2661
2662 case R_C6000_PREL31:
2663 if (h != NULL
2664 && h->plt.offset != (bfd_vma) -1
2665 && htab->elf.splt != NULL)
2666 {
2667 relocation = (htab->elf.splt->output_section->vma
2668 + htab->elf.splt->output_offset
2669 + h->plt.offset);
2670 }
2671 break;
2672
2673 case R_C6000_COPY:
2674 /* Invalid in relocatable object. */
2675 default:
2676 /* Unknown relocation. */
2677 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2678 input_bfd, r_type);
2679 ok = FALSE;
2680 continue;
2681 }
2682
2683 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2684 contents, rel->r_offset,
2685 relocation, rel->r_addend);
2686
2687 done_reloc:
2688 if (r == bfd_reloc_ok
2689 && howto->complain_on_overflow == complain_overflow_bitfield)
2690 {
2691 /* Generic overflow handling accepts cases the ABI says
2692 should be rejected for R_C6000_ABS16 and
2693 R_C6000_ABS8. */
2694 bfd_vma value = (relocation + rel->r_addend) & 0xffffffff;
2695 bfd_vma sbit = 1 << (howto->bitsize - 1);
2696 bfd_vma sbits = (-(bfd_vma) sbit) & 0xffffffff;
2697 bfd_vma value_sbits = value & sbits;
2698
2699 if (value_sbits != 0
2700 && value_sbits != sbit
2701 && value_sbits != sbits)
2702 r = bfd_reloc_overflow;
2703 }
2704
2705 if (r != bfd_reloc_ok)
2706 {
2707 const char *name;
2708 const char *error_message;
2709
2710 if (h != NULL)
2711 name = h->root.root.string;
2712 else
2713 {
2714 name = bfd_elf_string_from_elf_section (input_bfd,
2715 symtab_hdr->sh_link,
2716 sym->st_name);
2717 if (name == NULL)
2718 return FALSE;
2719 if (*name == '\0')
2720 name = bfd_section_name (input_bfd, sec);
2721 }
2722
2723 switch (r)
2724 {
2725 case bfd_reloc_overflow:
2726 /* If the overflowing reloc was to an undefined symbol,
2727 we have already printed one error message and there
2728 is no point complaining again. */
2729 if ((! h ||
2730 h->root.type != bfd_link_hash_undefined)
2731 && (!((*info->callbacks->reloc_overflow)
2732 (info, (h ? &h->root : NULL), name, howto->name,
2733 (bfd_vma) 0, input_bfd, input_section,
2734 rel->r_offset))))
2735 return FALSE;
2736 break;
2737
2738 case bfd_reloc_undefined:
2739 if (!((*info->callbacks->undefined_symbol)
2740 (info, name, input_bfd, input_section,
2741 rel->r_offset, TRUE)))
2742 return FALSE;
2743 break;
2744
2745 case bfd_reloc_outofrange:
2746 error_message = _("out of range");
2747 goto common_error;
2748
2749 case bfd_reloc_notsupported:
2750 error_message = _("unsupported relocation");
2751 goto common_error;
2752
2753 case bfd_reloc_dangerous:
2754 error_message = _("dangerous relocation");
2755 goto common_error;
2756
2757 default:
2758 error_message = _("unknown error");
2759 /* Fall through. */
2760
2761 common_error:
2762 BFD_ASSERT (error_message != NULL);
2763 if (!((*info->callbacks->reloc_dangerous)
2764 (info, error_message, input_bfd, input_section,
2765 rel->r_offset)))
2766 return FALSE;
2767 break;
2768 }
2769 }
2770 }
2771
2772 return ok;
2773 }
2774
2775 \f
2776 /* Look through the relocs for a section during the first phase, and
2777 calculate needed space in the global offset table, procedure linkage
2778 table, and dynamic reloc sections. */
2779
2780 static bfd_boolean
2781 elf32_tic6x_check_relocs (bfd *abfd, struct bfd_link_info *info,
2782 asection *sec, const Elf_Internal_Rela *relocs)
2783 {
2784 struct elf32_tic6x_link_hash_table *htab;
2785 Elf_Internal_Shdr *symtab_hdr;
2786 struct elf_link_hash_entry **sym_hashes;
2787 const Elf_Internal_Rela *rel;
2788 const Elf_Internal_Rela *rel_end;
2789 asection *sreloc;
2790
2791 if (info->relocatable)
2792 return TRUE;
2793
2794 htab = elf32_tic6x_hash_table (info);
2795 symtab_hdr = &elf_symtab_hdr (abfd);
2796 sym_hashes = elf_sym_hashes (abfd);
2797
2798 /* Create dynamic sections for relocatable executables so that we can
2799 copy relocations. */
2800 if ((info->shared || elf32_tic6x_using_dsbt (abfd))
2801 && ! htab->elf.dynamic_sections_created)
2802 {
2803 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
2804 return FALSE;
2805 }
2806
2807 sreloc = NULL;
2808
2809 rel_end = relocs + sec->reloc_count;
2810 for (rel = relocs; rel < rel_end; rel++)
2811 {
2812 unsigned int r_type;
2813 unsigned long r_symndx;
2814 struct elf_link_hash_entry *h;
2815 Elf_Internal_Sym *isym;
2816
2817 r_symndx = ELF32_R_SYM (rel->r_info);
2818 r_type = ELF32_R_TYPE (rel->r_info);
2819
2820 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
2821 {
2822 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
2823 abfd,
2824 r_symndx);
2825 return FALSE;
2826 }
2827
2828 if (r_symndx < symtab_hdr->sh_info)
2829 {
2830 /* A local symbol. */
2831 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2832 abfd, r_symndx);
2833 if (isym == NULL)
2834 return FALSE;
2835 h = NULL;
2836 }
2837 else
2838 {
2839 isym = NULL;
2840 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2841 while (h->root.type == bfd_link_hash_indirect
2842 || h->root.type == bfd_link_hash_warning)
2843 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2844 }
2845
2846 switch (r_type)
2847 {
2848 case R_C6000_PCR_S21:
2849 case R_C6000_PREL31:
2850 /* This symbol requires a procedure linkage table entry. We
2851 actually build the entry in adjust_dynamic_symbol,
2852 because this might be a case of linking PIC code which is
2853 never referenced by a dynamic object, in which case we
2854 don't need to generate a procedure linkage table entry
2855 after all. */
2856
2857 /* If this is a local symbol, we resolve it directly without
2858 creating a procedure linkage table entry. */
2859 if (h == NULL)
2860 continue;
2861
2862 h->needs_plt = 1;
2863 h->plt.refcount += 1;
2864 break;
2865
2866 case R_C6000_SBR_GOT_U15_W:
2867 case R_C6000_SBR_GOT_L16_W:
2868 case R_C6000_SBR_GOT_H16_W:
2869 case R_C6000_EHTYPE:
2870 /* This symbol requires a global offset table entry. */
2871 if (h != NULL)
2872 {
2873 h->got.refcount += 1;
2874 }
2875 else
2876 {
2877 bfd_signed_vma *local_got_refcounts;
2878
2879 /* This is a global offset table entry for a local symbol. */
2880 local_got_refcounts = elf_local_got_refcounts (abfd);
2881 if (local_got_refcounts == NULL)
2882 {
2883 bfd_size_type size;
2884
2885 size = symtab_hdr->sh_info;
2886 size *= (sizeof (bfd_signed_vma)
2887 + sizeof (bfd_vma) + sizeof(char));
2888 local_got_refcounts = bfd_zalloc (abfd, size);
2889 if (local_got_refcounts == NULL)
2890 return FALSE;
2891 elf_local_got_refcounts (abfd) = local_got_refcounts;
2892 }
2893 local_got_refcounts[r_symndx] += 1;
2894 }
2895
2896 if (htab->elf.sgot == NULL)
2897 {
2898 if (htab->elf.dynobj == NULL)
2899 htab->elf.dynobj = abfd;
2900 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
2901 return FALSE;
2902 }
2903 break;
2904
2905 case R_C6000_DSBT_INDEX:
2906 /* We'd like to check for nonzero dsbt_index here, but it's
2907 set up only after check_relocs is called. Instead, we
2908 store the number of R_C6000_DSBT_INDEX relocs in the
2909 pc_count field, and potentially discard the extra space
2910 in elf32_tic6x_allocate_dynrelocs. */
2911 if (!info->shared)
2912 break;
2913
2914 /* fall through */
2915 case R_C6000_ABS32:
2916 case R_C6000_ABS16:
2917 case R_C6000_ABS8:
2918 case R_C6000_ABS_S16:
2919 case R_C6000_ABS_L16:
2920 case R_C6000_ABS_H16:
2921 /* If we are creating a shared library, and this is a reloc
2922 against a global symbol, or a non PC relative reloc
2923 against a local symbol, then we need to copy the reloc
2924 into the shared library. However, if we are linking with
2925 -Bsymbolic, we do not need to copy a reloc against a
2926 global symbol which is defined in an object we are
2927 including in the link (i.e., DEF_REGULAR is set). At
2928 this point we have not seen all the input files, so it is
2929 possible that DEF_REGULAR is not set now but will be set
2930 later (it is never cleared). In case of a weak definition,
2931 DEF_REGULAR may be cleared later by a strong definition in
2932 a shared library. We account for that possibility below by
2933 storing information in the relocs_copied field of the hash
2934 table entry. A similar situation occurs when creating
2935 shared libraries and symbol visibility changes render the
2936 symbol local.
2937
2938 If on the other hand, we are creating an executable, we
2939 may need to keep relocations for symbols satisfied by a
2940 dynamic library if we manage to avoid copy relocs for the
2941 symbol. */
2942 if ((info->shared || elf32_tic6x_using_dsbt (abfd))
2943 && (sec->flags & SEC_ALLOC) != 0)
2944 {
2945 struct elf_dyn_relocs *p;
2946 struct elf_dyn_relocs **head;
2947
2948 /* We must copy these reloc types into the output file.
2949 Create a reloc section in dynobj and make room for
2950 this reloc. */
2951 if (sreloc == NULL)
2952 {
2953 if (htab->elf.dynobj == NULL)
2954 htab->elf.dynobj = abfd;
2955
2956 sreloc = _bfd_elf_make_dynamic_reloc_section
2957 (sec, htab->elf.dynobj, 2, abfd, /*rela? */ TRUE);
2958
2959 if (sreloc == NULL)
2960 return FALSE;
2961 }
2962
2963 /* If this is a global symbol, we count the number of
2964 relocations we need for this symbol. */
2965 if (h != NULL)
2966 {
2967 head = &((struct elf32_tic6x_link_hash_entry *) h)->dyn_relocs;
2968 }
2969 else
2970 {
2971 /* Track dynamic relocs needed for local syms too.
2972 We really need local syms available to do this
2973 easily. Oh well. */
2974 void **vpp;
2975 asection *s;
2976
2977 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2978 if (s == NULL)
2979 s = sec;
2980
2981 vpp = &elf_section_data (s)->local_dynrel;
2982 head = (struct elf_dyn_relocs **)vpp;
2983 }
2984
2985 p = *head;
2986 if (p == NULL || p->sec != sec)
2987 {
2988 bfd_size_type amt = sizeof *p;
2989 p = bfd_alloc (htab->elf.dynobj, amt);
2990 if (p == NULL)
2991 return FALSE;
2992 p->next = *head;
2993 *head = p;
2994 p->sec = sec;
2995 p->count = 0;
2996 p->pc_count = 0;
2997 }
2998
2999 p->count += 1;
3000 if (r_type == R_C6000_DSBT_INDEX)
3001 p->pc_count += 1;
3002 }
3003 break;
3004
3005 case R_C6000_SBR_U15_B:
3006 case R_C6000_SBR_U15_H:
3007 case R_C6000_SBR_U15_W:
3008 case R_C6000_SBR_S16:
3009 case R_C6000_SBR_L16_B:
3010 case R_C6000_SBR_L16_H:
3011 case R_C6000_SBR_L16_W:
3012 case R_C6000_SBR_H16_B:
3013 case R_C6000_SBR_H16_H:
3014 case R_C6000_SBR_H16_W:
3015 if (h != NULL && info->executable)
3016 {
3017 /* For B14-relative addresses, we might need a copy
3018 reloc. */
3019 h->non_got_ref = 1;
3020 }
3021 break;
3022
3023 default:
3024 break;
3025 }
3026 }
3027
3028 return TRUE;
3029 }
3030
3031 static bfd_boolean
3032 elf32_tic6x_add_symbol_hook (bfd *abfd,
3033 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3034 Elf_Internal_Sym *sym,
3035 const char **namep ATTRIBUTE_UNUSED,
3036 flagword *flagsp ATTRIBUTE_UNUSED,
3037 asection **secp,
3038 bfd_vma *valp)
3039 {
3040 switch (sym->st_shndx)
3041 {
3042 case SHN_TIC6X_SCOMMON:
3043 *secp = bfd_make_section_old_way (abfd, ".scommon");
3044 (*secp)->flags |= SEC_IS_COMMON;
3045 *valp = sym->st_size;
3046 bfd_set_section_alignment (abfd, *secp, bfd_log2 (sym->st_value));
3047 break;
3048 }
3049
3050 return TRUE;
3051 }
3052
3053 static void
3054 elf32_tic6x_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
3055 {
3056 elf_symbol_type *elfsym;
3057
3058 elfsym = (elf_symbol_type *) asym;
3059 switch (elfsym->internal_elf_sym.st_shndx)
3060 {
3061 case SHN_TIC6X_SCOMMON:
3062 if (tic6x_elf_scom_section.name == NULL)
3063 {
3064 /* Initialize the small common section. */
3065 tic6x_elf_scom_section.name = ".scommon";
3066 tic6x_elf_scom_section.flags = SEC_IS_COMMON;
3067 tic6x_elf_scom_section.output_section = &tic6x_elf_scom_section;
3068 tic6x_elf_scom_section.symbol = &tic6x_elf_scom_symbol;
3069 tic6x_elf_scom_section.symbol_ptr_ptr = &tic6x_elf_scom_symbol_ptr;
3070 tic6x_elf_scom_symbol.name = ".scommon";
3071 tic6x_elf_scom_symbol.flags = BSF_SECTION_SYM;
3072 tic6x_elf_scom_symbol.section = &tic6x_elf_scom_section;
3073 tic6x_elf_scom_symbol_ptr = &tic6x_elf_scom_symbol;
3074 }
3075 asym->section = &tic6x_elf_scom_section;
3076 asym->value = elfsym->internal_elf_sym.st_size;
3077 break;
3078 }
3079 }
3080
3081 static int
3082 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
3083 const char *name ATTRIBUTE_UNUSED,
3084 Elf_Internal_Sym *sym,
3085 asection *input_sec,
3086 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
3087 {
3088 /* If we see a common symbol, which implies a relocatable link, then
3089 if a symbol was small common in an input file, mark it as small
3090 common in the output file. */
3091 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0)
3092 sym->st_shndx = SHN_TIC6X_SCOMMON;
3093
3094 return 1;
3095 }
3096
3097 static bfd_boolean
3098 elf32_tic6x_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
3099 asection *sec,
3100 int *retval)
3101 {
3102 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
3103 {
3104 *retval = SHN_TIC6X_SCOMMON;
3105 return TRUE;
3106 }
3107
3108 return FALSE;
3109 }
3110
3111 /* Allocate space in .plt, .got and associated reloc sections for
3112 dynamic relocs. */
3113
3114 static bfd_boolean
3115 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3116 {
3117 struct bfd_link_info *info;
3118 struct elf32_tic6x_link_hash_table *htab;
3119 struct elf32_tic6x_link_hash_entry *eh;
3120 struct elf_dyn_relocs *p;
3121
3122 if (h->root.type == bfd_link_hash_indirect)
3123 return TRUE;
3124
3125 eh = (struct elf32_tic6x_link_hash_entry *) h;
3126 info = (struct bfd_link_info *) inf;
3127 htab = elf32_tic6x_hash_table (info);
3128
3129 if (htab->elf.dynamic_sections_created && h->plt.refcount > 0)
3130 {
3131 /* Make sure this symbol is output as a dynamic symbol.
3132 Undefined weak syms won't yet be marked as dynamic. */
3133 if (h->dynindx == -1 && !h->forced_local)
3134 {
3135 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3136 return FALSE;
3137 }
3138
3139 if (info->shared
3140 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
3141 {
3142 asection *s = htab->elf.splt;
3143
3144 /* If this is the first .plt entry, make room for the special
3145 first entry. */
3146 if (s->size == 0)
3147 s->size += PLT_ENTRY_SIZE;
3148
3149 h->plt.offset = s->size;
3150
3151 /* If this symbol is not defined in a regular file, and we are
3152 not generating a shared library, then set the symbol to this
3153 location in the .plt. This is required to make function
3154 pointers compare as equal between the normal executable and
3155 the shared library. */
3156 if (! info->shared && !h->def_regular)
3157 {
3158 h->root.u.def.section = s;
3159 h->root.u.def.value = h->plt.offset;
3160 }
3161
3162 /* Make room for this entry. */
3163 s->size += PLT_ENTRY_SIZE;
3164 /* We also need to make an entry in the .got.plt section, which
3165 will be placed in the .got section by the linker script. */
3166 htab->elf.sgotplt->size += 4;
3167 /* We also need to make an entry in the .rel.plt section. */
3168 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
3169 }
3170 else
3171 {
3172 h->plt.offset = (bfd_vma) -1;
3173 h->needs_plt = 0;
3174 }
3175 }
3176 else
3177 {
3178 h->plt.offset = (bfd_vma) -1;
3179 h->needs_plt = 0;
3180 }
3181
3182 if (h->got.refcount > 0)
3183 {
3184 asection *s;
3185
3186 /* Make sure this symbol is output as a dynamic symbol.
3187 Undefined weak syms won't yet be marked as dynamic. */
3188 if (h->dynindx == -1
3189 && !h->forced_local)
3190 {
3191 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3192 return FALSE;
3193 }
3194
3195 s = htab->elf.sgot;
3196 h->got.offset = s->size;
3197 s->size += 4;
3198
3199 if (!(ELF_ST_VISIBILITY (h->other)
3200 && h->root.type == bfd_link_hash_undefweak))
3201 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
3202 }
3203 else
3204 h->got.offset = (bfd_vma) -1;
3205
3206 if (eh->dyn_relocs == NULL)
3207 return TRUE;
3208
3209 /* Discard relocs on undefined weak syms with non-default
3210 visibility. */
3211 if (info->shared || elf32_tic6x_using_dsbt (htab->obfd))
3212 {
3213 /* We use the pc_count field to hold the number of
3214 R_C6000_DSBT_INDEX relocs. */
3215 if (htab->params.dsbt_index != 0)
3216 {
3217 struct elf_dyn_relocs **pp;
3218
3219 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3220 {
3221 p->count -= p->pc_count;
3222 p->pc_count = 0;
3223 if (p->count == 0)
3224 *pp = p->next;
3225 else
3226 pp = &p->next;
3227 }
3228 }
3229
3230 if (eh->dyn_relocs != NULL
3231 && h->root.type == bfd_link_hash_undefweak)
3232 {
3233 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3234 eh->dyn_relocs = NULL;
3235
3236 /* Make sure undefined weak symbols are output as a dynamic
3237 symbol in PIEs. */
3238 else if (h->dynindx == -1
3239 && !h->forced_local)
3240 {
3241 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3242 return FALSE;
3243 }
3244 }
3245 }
3246
3247 /* Finally, allocate space. */
3248 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3249 {
3250 asection *sreloc;
3251
3252 sreloc = elf_section_data (p->sec)->sreloc;
3253
3254 BFD_ASSERT (sreloc != NULL);
3255 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3256 }
3257
3258 return TRUE;
3259 }
3260
3261 /* Find any dynamic relocs that apply to read-only sections. */
3262
3263 static bfd_boolean
3264 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3265 {
3266 struct elf32_tic6x_link_hash_entry *eh;
3267 struct elf_dyn_relocs *p;
3268
3269 eh = (struct elf32_tic6x_link_hash_entry *) h;
3270 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3271 {
3272 asection *s = p->sec->output_section;
3273
3274 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3275 {
3276 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3277
3278 info->flags |= DF_TEXTREL;
3279
3280 /* Not an error, just cut short the traversal. */
3281 return FALSE;
3282 }
3283 }
3284 return TRUE;
3285 }
3286
3287 /* Set the sizes of the dynamic sections. */
3288
3289 static bfd_boolean
3290 elf32_tic6x_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
3291 {
3292 struct elf32_tic6x_link_hash_table *htab;
3293 bfd *dynobj;
3294 asection *s;
3295 bfd_boolean relocs;
3296 bfd *ibfd;
3297
3298 htab = elf32_tic6x_hash_table (info);
3299 dynobj = htab->elf.dynobj;
3300 if (dynobj == NULL)
3301 abort ();
3302
3303 if (htab->elf.dynamic_sections_created)
3304 {
3305 /* Set the contents of the .interp section to the interpreter. */
3306 if (info->executable)
3307 {
3308 s = bfd_get_section_by_name (dynobj, ".interp");
3309 if (s == NULL)
3310 abort ();
3311 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3312 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3313 }
3314 }
3315
3316 /* Set up .got offsets for local syms, and space for local dynamic
3317 relocs. */
3318 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3319 {
3320 bfd_signed_vma *local_got;
3321 bfd_signed_vma *end_local_got;
3322 char *local_tls_type;
3323 bfd_vma *local_tlsdesc_gotent;
3324 bfd_size_type locsymcount;
3325 Elf_Internal_Shdr *symtab_hdr;
3326 asection *srel;
3327
3328 for (s = ibfd->sections; s != NULL; s = s->next)
3329 {
3330 struct elf_dyn_relocs *p;
3331
3332 for (p = ((struct elf_dyn_relocs *)
3333 elf_section_data (s)->local_dynrel);
3334 p != NULL;
3335 p = p->next)
3336 {
3337 if (!bfd_is_abs_section (p->sec)
3338 && bfd_is_abs_section (p->sec->output_section))
3339 {
3340 /* Input section has been discarded, either because
3341 it is a copy of a linkonce section or due to
3342 linker script /DISCARD/, so we'll be discarding
3343 the relocs too. */
3344 }
3345 else if (p->count != 0)
3346 {
3347 srel = elf_section_data (p->sec)->sreloc;
3348 srel->size += p->count * sizeof (Elf32_External_Rela);
3349 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3350 info->flags |= DF_TEXTREL;
3351 }
3352 }
3353 }
3354
3355 local_got = elf_local_got_refcounts (ibfd);
3356 if (!local_got)
3357 continue;
3358
3359 symtab_hdr = &elf_symtab_hdr (ibfd);
3360 locsymcount = symtab_hdr->sh_info;
3361 end_local_got = local_got + locsymcount;
3362 s = htab->elf.sgot;
3363 srel = htab->elf.srelgot;
3364 for (; local_got < end_local_got;
3365 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
3366 {
3367 if (*local_got > 0)
3368 {
3369 *local_got = s->size;
3370 s->size += 4;
3371
3372 if (info->shared || elf32_tic6x_using_dsbt (output_bfd))
3373 {
3374 srel->size += sizeof (Elf32_External_Rela);
3375 }
3376 }
3377 else
3378 *local_got = (bfd_vma) -1;
3379 }
3380 }
3381
3382 /* Allocate global sym .plt and .got entries, and space for global
3383 sym dynamic relocs. */
3384 elf_link_hash_traverse (&htab->elf, elf32_tic6x_allocate_dynrelocs, info);
3385
3386 /* We now have determined the sizes of the various dynamic sections.
3387 Allocate memory for them. */
3388 relocs = FALSE;
3389 for (s = dynobj->sections; s != NULL; s = s->next)
3390 {
3391 bfd_boolean strip_section = TRUE;
3392
3393 if ((s->flags & SEC_LINKER_CREATED) == 0)
3394 continue;
3395
3396 if (s == htab->dsbt)
3397 s->size = 4 * htab->params.dsbt_size;
3398 else if (s == htab->elf.splt
3399 || s == htab->elf.sgot
3400 || s == htab->elf.sgotplt
3401 || s == htab->sdynbss)
3402 {
3403 /* Strip this section if we don't need it; see the
3404 comment below. */
3405 /* We'd like to strip these sections if they aren't needed, but if
3406 we've exported dynamic symbols from them we must leave them.
3407 It's too late to tell BFD to get rid of the symbols. */
3408
3409 if (htab->elf.hplt != NULL)
3410 strip_section = FALSE;
3411
3412 /* Round up the size of the PLT section to a multiple of 32. */
3413 if (s == htab->elf.splt && s->size > 0)
3414 s->size = (s->size + 31) & ~(bfd_vma)31;
3415 }
3416 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
3417 {
3418 if (s->size != 0
3419 && s != htab->elf.srelplt)
3420 relocs = TRUE;
3421
3422 /* We use the reloc_count field as a counter if we need
3423 to copy relocs into the output file. */
3424 s->reloc_count = 0;
3425 }
3426 else
3427 {
3428 /* It's not one of our sections, so don't allocate space. */
3429 continue;
3430 }
3431
3432 if (s->size == 0)
3433 {
3434 /* If we don't need this section, strip it from the
3435 output file. This is mostly to handle .rel.bss and
3436 .rel.plt. We must create both sections in
3437 create_dynamic_sections, because they must be created
3438 before the linker maps input sections to output
3439 sections. The linker does that before
3440 adjust_dynamic_symbol is called, and it is that
3441 function which decides whether anything needs to go
3442 into these sections. */
3443 if (strip_section)
3444 s->flags |= SEC_EXCLUDE;
3445 continue;
3446 }
3447
3448 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3449 continue;
3450
3451 /* Allocate memory for the section contents. We use bfd_zalloc
3452 here in case unused entries are not reclaimed before the
3453 section's contents are written out. This should not happen,
3454 but this way if it does, we get a R_C6000_NONE reloc instead
3455 of garbage. */
3456 s->contents = bfd_zalloc (dynobj, s->size);
3457 if (s->contents == NULL)
3458 return FALSE;
3459 }
3460
3461 if (htab->elf.dynamic_sections_created)
3462 {
3463 /* Add some entries to the .dynamic section. We fill in the
3464 values later, in elf32_tic6x_finish_dynamic_sections, but we
3465 must add the entries now so that we get the correct size for
3466 the .dynamic section. The DT_DEBUG entry is filled in by the
3467 dynamic linker and used by the debugger. */
3468 #define add_dynamic_entry(TAG, VAL) \
3469 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3470
3471 if (info->executable)
3472 {
3473 if (!add_dynamic_entry (DT_DEBUG, 0))
3474 return FALSE;
3475 }
3476
3477 if (!add_dynamic_entry (DT_C6000_DSBT_BASE, 0)
3478 || !add_dynamic_entry (DT_C6000_DSBT_SIZE, htab->params.dsbt_size)
3479 || !add_dynamic_entry (DT_C6000_DSBT_INDEX,
3480 htab->params.dsbt_index))
3481 return FALSE;
3482
3483 if (htab->elf.splt->size != 0)
3484 {
3485 if (!add_dynamic_entry (DT_PLTGOT, 0)
3486 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3487 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3488 || !add_dynamic_entry (DT_JMPREL, 0))
3489 return FALSE;
3490 }
3491
3492 if (relocs)
3493 {
3494 if (!add_dynamic_entry (DT_RELA, 0)
3495 || !add_dynamic_entry (DT_RELASZ, 0)
3496 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3497 return FALSE;
3498
3499 /* If any dynamic relocs apply to a read-only section,
3500 then we need a DT_TEXTREL entry. */
3501 if ((info->flags & DF_TEXTREL) == 0)
3502 elf_link_hash_traverse (&htab->elf,
3503 elf32_tic6x_readonly_dynrelocs, info);
3504
3505 if ((info->flags & DF_TEXTREL) != 0)
3506 {
3507 if (!add_dynamic_entry (DT_TEXTREL, 0))
3508 return FALSE;
3509 }
3510 }
3511 }
3512 #undef add_dynamic_entry
3513
3514 return TRUE;
3515 }
3516
3517 /* This function is called after all the input files have been read,
3518 and the input sections have been assigned to output sections. */
3519
3520 static bfd_boolean
3521 elf32_tic6x_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
3522 {
3523 if (elf32_tic6x_using_dsbt (output_bfd) && !info->relocatable)
3524 {
3525 struct elf_link_hash_entry *h;
3526
3527 /* Force a PT_GNU_STACK segment to be created. */
3528 if (! elf_tdata (output_bfd)->stack_flags)
3529 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
3530
3531 /* Define __stacksize if it's not defined yet. */
3532 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3533 FALSE, FALSE, FALSE);
3534 if (! h || h->root.type != bfd_link_hash_defined
3535 || h->type != STT_OBJECT
3536 || !h->def_regular)
3537 {
3538 struct bfd_link_hash_entry *bh = NULL;
3539
3540 if (!(_bfd_generic_link_add_one_symbol
3541 (info, output_bfd, "__stacksize",
3542 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE,
3543 (const char *) NULL, FALSE,
3544 get_elf_backend_data (output_bfd)->collect, &bh)))
3545 return FALSE;
3546
3547 h = (struct elf_link_hash_entry *) bh;
3548 h->def_regular = 1;
3549 h->type = STT_OBJECT;
3550 }
3551 }
3552 return TRUE;
3553 }
3554
3555 static bfd_boolean
3556 elf32_tic6x_modify_program_headers (bfd *output_bfd,
3557 struct bfd_link_info *info)
3558 {
3559 struct elf_obj_tdata *tdata = elf_tdata (output_bfd);
3560 struct elf_segment_map *m;
3561 Elf_Internal_Phdr *p;
3562
3563 /* objcopy and strip preserve what's already there using
3564 elf32_tic6x_copy_private_bfd_data (). */
3565 if (! info)
3566 return TRUE;
3567
3568 for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++)
3569 if (m->p_type == PT_GNU_STACK)
3570 break;
3571
3572 if (m)
3573 {
3574 struct elf_link_hash_entry *h;
3575
3576 /* Obtain the pointer to the __stacksize symbol. */
3577 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3578 FALSE, FALSE, FALSE);
3579 if (h)
3580 {
3581 while (h->root.type == bfd_link_hash_indirect
3582 || h->root.type == bfd_link_hash_warning)
3583 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3584 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
3585 }
3586
3587 /* Set the header p_memsz from the symbol value. We
3588 intentionally ignore the symbol section. */
3589 if (h && h->root.type == bfd_link_hash_defined)
3590 p->p_memsz = h->root.u.def.value;
3591 else
3592 p->p_memsz = DEFAULT_STACK_SIZE;
3593
3594 p->p_align = 8;
3595 }
3596
3597 return TRUE;
3598 }
3599
3600 static bfd_boolean
3601 elf32_tic6x_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3602 struct bfd_link_info *info)
3603 {
3604 struct elf32_tic6x_link_hash_table *htab;
3605 bfd *dynobj;
3606 asection *sdyn;
3607
3608 htab = elf32_tic6x_hash_table (info);
3609 dynobj = htab->elf.dynobj;
3610 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3611
3612 if (elf_hash_table (info)->dynamic_sections_created)
3613 {
3614 Elf32_External_Dyn * dyncon;
3615 Elf32_External_Dyn * dynconend;
3616
3617 BFD_ASSERT (sdyn != NULL);
3618
3619 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3620 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3621
3622 for (; dyncon < dynconend; dyncon++)
3623 {
3624 Elf_Internal_Dyn dyn;
3625 asection *s;
3626
3627 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3628
3629 switch (dyn.d_tag)
3630 {
3631 default:
3632 break;
3633
3634 case DT_C6000_DSBT_BASE:
3635 s = htab->dsbt;
3636 dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset);
3637 break;
3638
3639 case DT_PLTGOT:
3640 s = htab->elf.sgotplt;
3641 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3642 break;
3643
3644 case DT_JMPREL:
3645 s = htab->elf.srelplt;
3646 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3647 break;
3648
3649 case DT_PLTRELSZ:
3650 s = htab->elf.srelplt;
3651 dyn.d_un.d_val = s->size;
3652 break;
3653 }
3654 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3655 }
3656
3657 /* Fill in the first entry in the procedure linkage table. */
3658 if (htab->elf.splt && htab->elf.splt->size > 0)
3659 {
3660 bfd_vma got_offs = (htab->elf.sgotplt->output_section->vma
3661 + htab->elf.sgotplt->output_offset
3662 - htab->dsbt->output_section->vma
3663 - htab->dsbt->output_offset) / 4;
3664
3665 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3666 bfd_put_32 (output_bfd, got_offs << 8 | 0x0100006e,
3667 htab->elf.splt->contents);
3668 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3669 bfd_put_32 (output_bfd, (got_offs + 1) << 8 | 0x0080006e,
3670 htab->elf.splt->contents + 4);
3671 /* nop 3 */
3672 bfd_put_32 (output_bfd, 0x00004000,
3673 htab->elf.splt->contents + 8);
3674 /* b .s2 b2 */
3675 bfd_put_32 (output_bfd, 0x00080362,
3676 htab->elf.splt->contents + 12);
3677 /* nop 5 */
3678 bfd_put_32 (output_bfd, 0x00008000,
3679 htab->elf.splt->contents + 16);
3680
3681 elf_section_data (htab->elf.splt->output_section)
3682 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
3683 }
3684 }
3685
3686 return TRUE;
3687 }
3688
3689 /* Return address for Ith PLT stub in section PLT, for relocation REL
3690 or (bfd_vma) -1 if it should not be included. */
3691
3692 static bfd_vma
3693 elf32_tic6x_plt_sym_val (bfd_vma i, const asection *plt,
3694 const arelent *rel ATTRIBUTE_UNUSED)
3695 {
3696 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3697 }
3698
3699 static int
3700 elf32_tic6x_obj_attrs_arg_type (int tag)
3701 {
3702 if (tag == Tag_ABI_compatibility)
3703 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
3704 else if (tag & 1)
3705 return ATTR_TYPE_FLAG_STR_VAL;
3706 else
3707 return ATTR_TYPE_FLAG_INT_VAL;
3708 }
3709
3710 static int
3711 elf32_tic6x_obj_attrs_order (int num)
3712 {
3713 if (num == LEAST_KNOWN_OBJ_ATTRIBUTE)
3714 return Tag_ABI_conformance;
3715 if ((num - 1) < Tag_ABI_conformance)
3716 return num - 1;
3717 return num;
3718 }
3719
3720 static bfd_boolean
3721 elf32_tic6x_obj_attrs_handle_unknown (bfd *abfd, int tag)
3722 {
3723 if ((tag & 127) < 64)
3724 {
3725 _bfd_error_handler
3726 (_("%B: error: unknown mandatory EABI object attribute %d"),
3727 abfd, tag);
3728 bfd_set_error (bfd_error_bad_value);
3729 return FALSE;
3730 }
3731 else
3732 {
3733 _bfd_error_handler
3734 (_("%B: warning: unknown EABI object attribute %d"),
3735 abfd, tag);
3736 return TRUE;
3737 }
3738 }
3739
3740 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3741 and return the merged value. At present, all merges succeed, so no
3742 return value for errors is defined. */
3743
3744 int
3745 elf32_tic6x_merge_arch_attributes (int arch1, int arch2)
3746 {
3747 int min_arch, max_arch;
3748
3749 min_arch = (arch1 < arch2 ? arch1 : arch2);
3750 max_arch = (arch1 > arch2 ? arch1 : arch2);
3751
3752 /* In most cases, the numerically greatest value is the correct
3753 merged value, but merging C64 and C67 results in C674X. */
3754 if ((min_arch == C6XABI_Tag_ISA_C67X
3755 || min_arch == C6XABI_Tag_ISA_C67XP)
3756 && (max_arch == C6XABI_Tag_ISA_C64X
3757 || max_arch == C6XABI_Tag_ISA_C64XP))
3758 return C6XABI_Tag_ISA_C674X;
3759
3760 return max_arch;
3761 }
3762
3763 /* Convert a Tag_ABI_array_object_alignment or
3764 Tag_ABI_array_object_align_expected tag value TAG to a
3765 corresponding alignment value; return the alignment, or -1 for an
3766 unknown tag value. */
3767
3768 static int
3769 elf32_tic6x_tag_to_array_alignment (int tag)
3770 {
3771 switch (tag)
3772 {
3773 case 0:
3774 return 8;
3775
3776 case 1:
3777 return 4;
3778
3779 case 2:
3780 return 16;
3781
3782 default:
3783 return -1;
3784 }
3785 }
3786
3787 /* Convert a Tag_ABI_array_object_alignment or
3788 Tag_ABI_array_object_align_expected alignment ALIGN to a
3789 corresponding tag value; return the tag value. */
3790
3791 static int
3792 elf32_tic6x_array_alignment_to_tag (int align)
3793 {
3794 switch (align)
3795 {
3796 case 8:
3797 return 0;
3798
3799 case 4:
3800 return 1;
3801
3802 case 16:
3803 return 2;
3804
3805 default:
3806 abort ();
3807 }
3808 }
3809
3810 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3811 succeeded, FALSE otherwise. */
3812
3813 static bfd_boolean
3814 elf32_tic6x_merge_attributes (bfd *ibfd, bfd *obfd)
3815 {
3816 bfd_boolean result = TRUE;
3817 obj_attribute *in_attr;
3818 obj_attribute *out_attr;
3819 int i;
3820 int array_align_in, array_align_out, array_expect_in, array_expect_out;
3821
3822 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3823 {
3824 /* This is the first object. Copy the attributes. */
3825 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3826
3827 out_attr = elf_known_obj_attributes_proc (obfd);
3828
3829 /* Use the Tag_null value to indicate the attributes have been
3830 initialized. */
3831 out_attr[0].i = 1;
3832
3833 return TRUE;
3834 }
3835
3836 in_attr = elf_known_obj_attributes_proc (ibfd);
3837 out_attr = elf_known_obj_attributes_proc (obfd);
3838
3839 /* No specification yet for handling of unknown attributes, so just
3840 ignore them and handle known ones. */
3841
3842 if (out_attr[Tag_ABI_stack_align_preserved].i
3843 < in_attr[Tag_ABI_stack_align_needed].i)
3844 {
3845 _bfd_error_handler
3846 (_("error: %B requires more stack alignment than %B preserves"),
3847 ibfd, obfd);
3848 result = FALSE;
3849 }
3850 if (in_attr[Tag_ABI_stack_align_preserved].i
3851 < out_attr[Tag_ABI_stack_align_needed].i)
3852 {
3853 _bfd_error_handler
3854 (_("error: %B requires more stack alignment than %B preserves"),
3855 obfd, ibfd);
3856 result = FALSE;
3857 }
3858
3859 array_align_in = elf32_tic6x_tag_to_array_alignment
3860 (in_attr[Tag_ABI_array_object_alignment].i);
3861 if (array_align_in == -1)
3862 {
3863 _bfd_error_handler
3864 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3865 ibfd);
3866 result = FALSE;
3867 }
3868 array_align_out = elf32_tic6x_tag_to_array_alignment
3869 (out_attr[Tag_ABI_array_object_alignment].i);
3870 if (array_align_out == -1)
3871 {
3872 _bfd_error_handler
3873 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3874 obfd);
3875 result = FALSE;
3876 }
3877 array_expect_in = elf32_tic6x_tag_to_array_alignment
3878 (in_attr[Tag_ABI_array_object_align_expected].i);
3879 if (array_expect_in == -1)
3880 {
3881 _bfd_error_handler
3882 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3883 ibfd);
3884 result = FALSE;
3885 }
3886 array_expect_out = elf32_tic6x_tag_to_array_alignment
3887 (out_attr[Tag_ABI_array_object_align_expected].i);
3888 if (array_expect_out == -1)
3889 {
3890 _bfd_error_handler
3891 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3892 obfd);
3893 result = FALSE;
3894 }
3895
3896 if (array_align_out < array_expect_in)
3897 {
3898 _bfd_error_handler
3899 (_("error: %B requires more array alignment than %B preserves"),
3900 ibfd, obfd);
3901 result = FALSE;
3902 }
3903 if (array_align_in < array_expect_out)
3904 {
3905 _bfd_error_handler
3906 (_("error: %B requires more array alignment than %B preserves"),
3907 obfd, ibfd);
3908 result = FALSE;
3909 }
3910
3911 for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
3912 {
3913 switch (i)
3914 {
3915 case Tag_ISA:
3916 out_attr[i].i = elf32_tic6x_merge_arch_attributes (in_attr[i].i,
3917 out_attr[i].i);
3918 break;
3919
3920 case Tag_ABI_wchar_t:
3921 if (out_attr[i].i == 0)
3922 out_attr[i].i = in_attr[i].i;
3923 if (out_attr[i].i != 0
3924 && in_attr[i].i != 0
3925 && out_attr[i].i != in_attr[i].i)
3926 {
3927 _bfd_error_handler
3928 (_("warning: %B and %B differ in wchar_t size"), obfd, ibfd);
3929 }
3930 break;
3931
3932 case Tag_ABI_stack_align_needed:
3933 if (out_attr[i].i < in_attr[i].i)
3934 out_attr[i].i = in_attr[i].i;
3935 break;
3936
3937 case Tag_ABI_stack_align_preserved:
3938 if (out_attr[i].i > in_attr[i].i)
3939 out_attr[i].i = in_attr[i].i;
3940 break;
3941
3942 case Tag_ABI_DSBT:
3943 if (out_attr[i].i != in_attr[i].i)
3944 {
3945 _bfd_error_handler
3946 (_("warning: %B and %B differ in whether code is "
3947 "compiled for DSBT"),
3948 obfd, ibfd);
3949 }
3950 break;
3951
3952 case Tag_ABI_PIC:
3953 case Tag_ABI_PID:
3954 if (out_attr[i].i > in_attr[i].i)
3955 out_attr[i].i = in_attr[i].i;
3956 break;
3957
3958 case Tag_ABI_array_object_alignment:
3959 if (array_align_out != -1
3960 && array_align_in != -1
3961 && array_align_out > array_align_in)
3962 out_attr[i].i
3963 = elf32_tic6x_array_alignment_to_tag (array_align_in);
3964 break;
3965
3966 case Tag_ABI_array_object_align_expected:
3967 if (array_expect_out != -1
3968 && array_expect_in != -1
3969 && array_expect_out < array_expect_in)
3970 out_attr[i].i
3971 = elf32_tic6x_array_alignment_to_tag (array_expect_in);
3972 break;
3973
3974 case Tag_ABI_conformance:
3975 /* Merging for this attribute is not specified. As on ARM,
3976 treat a missing attribute as no claim to conform and only
3977 merge identical values. */
3978 if (out_attr[i].s == NULL
3979 || in_attr[i].s == NULL
3980 || strcmp (out_attr[i].s,
3981 in_attr[i].s) != 0)
3982 out_attr[i].s = NULL;
3983 break;
3984
3985 case Tag_ABI_compatibility:
3986 /* Merged in _bfd_elf_merge_object_attributes. */
3987 break;
3988
3989 default:
3990 result
3991 = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
3992 break;
3993 }
3994
3995 if (in_attr[i].type && !out_attr[i].type)
3996 out_attr[i].type = in_attr[i].type;
3997 }
3998
3999 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
4000 if (!_bfd_elf_merge_object_attributes (ibfd, obfd))
4001 return FALSE;
4002
4003 result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
4004
4005 return result;
4006 }
4007
4008 static bfd_boolean
4009 elf32_tic6x_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4010 {
4011 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
4012 return FALSE;
4013
4014 if (! is_tic6x_elf (ibfd) || ! is_tic6x_elf (obfd))
4015 return TRUE;
4016
4017 if (!elf32_tic6x_merge_attributes (ibfd, obfd))
4018 return FALSE;
4019
4020 return TRUE;
4021 }
4022
4023 static bfd_boolean
4024 elf32_tic6x_copy_private_data (bfd * ibfd, bfd * obfd)
4025 {
4026 _bfd_elf_copy_private_bfd_data (ibfd, obfd);
4027
4028 if (! is_tic6x_elf (ibfd) || ! is_tic6x_elf (obfd))
4029 return TRUE;
4030
4031 /* Copy the stack size. */
4032 if (elf_tdata (ibfd)->phdr && elf_tdata (obfd)->phdr
4033 && elf32_tic6x_using_dsbt (ibfd) && elf32_tic6x_using_dsbt (obfd))
4034 {
4035 unsigned i;
4036
4037 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
4038 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
4039 {
4040 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
4041
4042 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
4043 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
4044 {
4045 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
4046
4047 /* Rewrite the phdrs, since we're only called after they
4048 were first written. */
4049 if (bfd_seek (obfd,
4050 (bfd_signed_vma) get_elf_backend_data (obfd)
4051 ->s->sizeof_ehdr, SEEK_SET) != 0
4052 || get_elf_backend_data (obfd)->s
4053 ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
4054 elf_elfheader (obfd)->e_phnum) != 0)
4055 return FALSE;
4056 break;
4057 }
4058
4059 break;
4060 }
4061 }
4062
4063 return TRUE;
4064 }
4065
4066 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
4067 adds the edit to the start of the list. (The list must be built in order of
4068 ascending TINDEX: the function's callers are primarily responsible for
4069 maintaining that condition). */
4070
4071 static void
4072 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit **head,
4073 tic6x_unwind_table_edit **tail,
4074 tic6x_unwind_edit_type type,
4075 asection *linked_section,
4076 unsigned int tindex)
4077 {
4078 tic6x_unwind_table_edit *new_edit = (tic6x_unwind_table_edit *)
4079 xmalloc (sizeof (tic6x_unwind_table_edit));
4080
4081 new_edit->type = type;
4082 new_edit->linked_section = linked_section;
4083 new_edit->index = tindex;
4084
4085 if (tindex > 0)
4086 {
4087 new_edit->next = NULL;
4088
4089 if (*tail)
4090 (*tail)->next = new_edit;
4091
4092 (*tail) = new_edit;
4093
4094 if (!*head)
4095 (*head) = new_edit;
4096 }
4097 else
4098 {
4099 new_edit->next = *head;
4100
4101 if (!*tail)
4102 *tail = new_edit;
4103
4104 *head = new_edit;
4105 }
4106 }
4107
4108 static _tic6x_elf_section_data *
4109 get_tic6x_elf_section_data (asection * sec)
4110 {
4111 if (sec && sec->owner && is_tic6x_elf (sec->owner))
4112 return elf32_tic6x_section_data (sec);
4113 else
4114 return NULL;
4115 }
4116
4117
4118 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
4119 static void
4120 elf32_tic6x_adjust_exidx_size (asection *exidx_sec, int adjust)
4121 {
4122 asection *out_sec;
4123
4124 if (!exidx_sec->rawsize)
4125 exidx_sec->rawsize = exidx_sec->size;
4126
4127 bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust);
4128 out_sec = exidx_sec->output_section;
4129 /* Adjust size of output section. */
4130 bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust);
4131 }
4132
4133 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
4134 static void
4135 elf32_tic6x_insert_cantunwind_after (asection *text_sec, asection *exidx_sec)
4136 {
4137 struct _tic6x_elf_section_data *exidx_data;
4138
4139 exidx_data = get_tic6x_elf_section_data (exidx_sec);
4140 elf32_tic6x_add_unwind_table_edit (
4141 &exidx_data->u.exidx.unwind_edit_list,
4142 &exidx_data->u.exidx.unwind_edit_tail,
4143 INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX);
4144
4145 elf32_tic6x_adjust_exidx_size (exidx_sec, 8);
4146 }
4147
4148 /* Scan .cx6abi.exidx tables, and create a list describing edits which
4149 should be made to those tables, such that:
4150
4151 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
4152 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
4153 codes which have been inlined into the index).
4154
4155 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
4156
4157 The edits are applied when the tables are written
4158 (in elf32_tic6x_write_section).
4159 */
4160
4161 bfd_boolean
4162 elf32_tic6x_fix_exidx_coverage (asection **text_section_order,
4163 unsigned int num_text_sections,
4164 struct bfd_link_info *info,
4165 bfd_boolean merge_exidx_entries)
4166 {
4167 bfd *inp;
4168 unsigned int last_second_word = 0, i;
4169 asection *last_exidx_sec = NULL;
4170 asection *last_text_sec = NULL;
4171 int last_unwind_type = -1;
4172
4173 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
4174 text sections. */
4175 for (inp = info->input_bfds; inp != NULL; inp = inp->link_next)
4176 {
4177 asection *sec;
4178
4179 for (sec = inp->sections; sec != NULL; sec = sec->next)
4180 {
4181 struct bfd_elf_section_data *elf_sec = elf_section_data (sec);
4182 Elf_Internal_Shdr *hdr = &elf_sec->this_hdr;
4183
4184 if (!hdr || hdr->sh_type != SHT_C6000_UNWIND)
4185 continue;
4186
4187 if (elf_sec->linked_to)
4188 {
4189 Elf_Internal_Shdr *linked_hdr
4190 = &elf_section_data (elf_sec->linked_to)->this_hdr;
4191 struct _tic6x_elf_section_data *linked_sec_tic6x_data
4192 = get_tic6x_elf_section_data (linked_hdr->bfd_section);
4193
4194 if (linked_sec_tic6x_data == NULL)
4195 continue;
4196
4197 /* Link this .c6xabi.exidx section back from the
4198 text section it describes. */
4199 linked_sec_tic6x_data->u.text.tic6x_exidx_sec = sec;
4200 }
4201 }
4202 }
4203
4204 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4205 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4206 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4207
4208 for (i = 0; i < num_text_sections; i++)
4209 {
4210 asection *sec = text_section_order[i];
4211 asection *exidx_sec;
4212 struct _tic6x_elf_section_data *tic6x_data
4213 = get_tic6x_elf_section_data (sec);
4214 struct _tic6x_elf_section_data *exidx_data;
4215 bfd_byte *contents = NULL;
4216 int deleted_exidx_bytes = 0;
4217 bfd_vma j;
4218 tic6x_unwind_table_edit *unwind_edit_head = NULL;
4219 tic6x_unwind_table_edit *unwind_edit_tail = NULL;
4220 Elf_Internal_Shdr *hdr;
4221 bfd *ibfd;
4222
4223 if (tic6x_data == NULL)
4224 continue;
4225
4226 exidx_sec = tic6x_data->u.text.tic6x_exidx_sec;
4227 if (exidx_sec == NULL)
4228 {
4229 /* Section has no unwind data. */
4230 if (last_unwind_type == 0 || !last_exidx_sec)
4231 continue;
4232
4233 /* Ignore zero sized sections. */
4234 if (sec->size == 0)
4235 continue;
4236
4237 elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec);
4238 last_unwind_type = 0;
4239 continue;
4240 }
4241
4242 /* Skip /DISCARD/ sections. */
4243 if (bfd_is_abs_section (exidx_sec->output_section))
4244 continue;
4245
4246 hdr = &elf_section_data (exidx_sec)->this_hdr;
4247 if (hdr->sh_type != SHT_C6000_UNWIND)
4248 continue;
4249
4250 exidx_data = get_tic6x_elf_section_data (exidx_sec);
4251 if (exidx_data == NULL)
4252 continue;
4253
4254 ibfd = exidx_sec->owner;
4255
4256 if (hdr->contents != NULL)
4257 contents = hdr->contents;
4258 else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents))
4259 /* An error? */
4260 continue;
4261
4262 for (j = 0; j < hdr->sh_size; j += 8)
4263 {
4264 unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4);
4265 int unwind_type;
4266 int elide = 0;
4267
4268 /* An EXIDX_CANTUNWIND entry. */
4269 if (second_word == 1)
4270 {
4271 if (last_unwind_type == 0)
4272 elide = 1;
4273 unwind_type = 0;
4274 }
4275 /* Inlined unwinding data. Merge if equal to previous. */
4276 else if ((second_word & 0x80000000) != 0)
4277 {
4278 if (merge_exidx_entries
4279 && last_second_word == second_word
4280 && last_unwind_type == 1)
4281 elide = 1;
4282 unwind_type = 1;
4283 last_second_word = second_word;
4284 }
4285 /* Normal table entry. In theory we could merge these too,
4286 but duplicate entries are likely to be much less common. */
4287 else
4288 unwind_type = 2;
4289
4290 if (elide)
4291 {
4292 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head,
4293 &unwind_edit_tail, DELETE_EXIDX_ENTRY, NULL, j / 8);
4294
4295 deleted_exidx_bytes += 8;
4296 }
4297
4298 last_unwind_type = unwind_type;
4299 }
4300
4301 /* Free contents if we allocated it ourselves. */
4302 if (contents != hdr->contents)
4303 free (contents);
4304
4305 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4306 exidx_data->u.exidx.unwind_edit_list = unwind_edit_head;
4307 exidx_data->u.exidx.unwind_edit_tail = unwind_edit_tail;
4308
4309 if (deleted_exidx_bytes > 0)
4310 elf32_tic6x_adjust_exidx_size (exidx_sec, -deleted_exidx_bytes);
4311
4312 last_exidx_sec = exidx_sec;
4313 last_text_sec = sec;
4314 }
4315
4316 /* Add terminating CANTUNWIND entry. */
4317 if (last_exidx_sec && last_unwind_type != 0)
4318 elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec);
4319
4320 return TRUE;
4321 }
4322
4323 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4324
4325 static unsigned long
4326 elf32_tic6x_add_low31 (unsigned long val, bfd_vma addend)
4327 {
4328 return (val & ~0x7ffffffful) | ((val + addend) & 0x7ffffffful);
4329 }
4330
4331 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4332 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4333
4334
4335 static void
4336 elf32_tic6x_copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from,
4337 bfd_vma offset)
4338 {
4339 unsigned long first_word = bfd_get_32 (output_bfd, from);
4340 unsigned long second_word = bfd_get_32 (output_bfd, from + 4);
4341
4342 offset >>= 1;
4343 /* High bit of first word is supposed to be zero. */
4344 if ((first_word & 0x80000000ul) == 0)
4345 first_word = elf32_tic6x_add_low31 (first_word, offset);
4346
4347 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4348 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4349 if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0))
4350 second_word = elf32_tic6x_add_low31 (second_word, offset);
4351
4352 bfd_put_32 (output_bfd, first_word, to);
4353 bfd_put_32 (output_bfd, second_word, to + 4);
4354 }
4355
4356 /* Do the actual mangling of exception index tables. */
4357
4358 static bfd_boolean
4359 elf32_tic6x_write_section (bfd *output_bfd,
4360 struct bfd_link_info *link_info,
4361 asection *sec,
4362 bfd_byte *contents)
4363 {
4364 _tic6x_elf_section_data *tic6x_data;
4365 struct elf32_tic6x_link_hash_table *globals
4366 = elf32_tic6x_hash_table (link_info);
4367 bfd_vma offset = sec->output_section->vma + sec->output_offset;
4368
4369 if (globals == NULL)
4370 return FALSE;
4371
4372 /* If this section has not been allocated an _tic6x_elf_section_data
4373 structure then we cannot record anything. */
4374 tic6x_data = get_tic6x_elf_section_data (sec);
4375 if (tic6x_data == NULL)
4376 return FALSE;
4377
4378 if (tic6x_data->elf.this_hdr.sh_type != SHT_C6000_UNWIND)
4379 return FALSE;
4380
4381 tic6x_unwind_table_edit *edit_node
4382 = tic6x_data->u.exidx.unwind_edit_list;
4383 /* Now, sec->size is the size of the section we will write. The original
4384 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4385 markers) was sec->rawsize. (This isn't the case if we perform no
4386 edits, then rawsize will be zero and we should use size). */
4387 bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size);
4388 unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size;
4389 unsigned int in_index, out_index;
4390 bfd_vma add_to_offsets = 0;
4391
4392 for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;)
4393 {
4394 if (edit_node)
4395 {
4396 unsigned int edit_index = edit_node->index;
4397
4398 if (in_index < edit_index && in_index * 8 < input_size)
4399 {
4400 elf32_tic6x_copy_exidx_entry (output_bfd,
4401 edited_contents + out_index * 8,
4402 contents + in_index * 8, add_to_offsets);
4403 out_index++;
4404 in_index++;
4405 }
4406 else if (in_index == edit_index
4407 || (in_index * 8 >= input_size
4408 && edit_index == UINT_MAX))
4409 {
4410 switch (edit_node->type)
4411 {
4412 case DELETE_EXIDX_ENTRY:
4413 in_index++;
4414 add_to_offsets += 8;
4415 break;
4416
4417 case INSERT_EXIDX_CANTUNWIND_AT_END:
4418 {
4419 asection *text_sec = edit_node->linked_section;
4420 bfd_vma text_offset = text_sec->output_section->vma
4421 + text_sec->output_offset
4422 + text_sec->size;
4423 bfd_vma exidx_offset = offset + out_index * 8;
4424 unsigned long prel31_offset;
4425
4426 /* Note: this is meant to be equivalent to an
4427 R_C6000_PREL31 relocation. These synthetic
4428 EXIDX_CANTUNWIND markers are not relocated by the
4429 usual BFD method. */
4430 prel31_offset = ((text_offset - exidx_offset) >> 1)
4431 & 0x7ffffffful;
4432
4433 /* First address we can't unwind. */
4434 bfd_put_32 (output_bfd, prel31_offset,
4435 &edited_contents[out_index * 8]);
4436
4437 /* Code for EXIDX_CANTUNWIND. */
4438 bfd_put_32 (output_bfd, 0x1,
4439 &edited_contents[out_index * 8 + 4]);
4440
4441 out_index++;
4442 add_to_offsets -= 8;
4443 }
4444 break;
4445 }
4446
4447 edit_node = edit_node->next;
4448 }
4449 }
4450 else
4451 {
4452 /* No more edits, copy remaining entries verbatim. */
4453 elf32_tic6x_copy_exidx_entry (output_bfd,
4454 edited_contents + out_index * 8,
4455 contents + in_index * 8, add_to_offsets);
4456 out_index++;
4457 in_index++;
4458 }
4459 }
4460
4461 if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD))
4462 bfd_set_section_contents (output_bfd, sec->output_section,
4463 edited_contents,
4464 (file_ptr) sec->output_offset, sec->size);
4465
4466 return TRUE;
4467 }
4468
4469 static void
4470 elf32_tic6x_set_osabi (bfd *abfd, struct bfd_link_info *link_info)
4471 {
4472 if (link_info != NULL && link_info->relocatable)
4473 return;
4474 _bfd_elf_set_osabi (abfd, link_info);
4475 }
4476
4477 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_le_vec
4478 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4479 #define TARGET_BIG_SYM bfd_elf32_tic6x_be_vec
4480 #define TARGET_BIG_NAME "elf32-tic6x-be"
4481 #define ELF_ARCH bfd_arch_tic6x
4482 #define ELF_TARGET_ID TIC6X_ELF_DATA
4483 #define ELF_MACHINE_CODE EM_TI_C6000
4484 #define ELF_MAXPAGESIZE 0x1000
4485 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4486 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4487 #define bfd_elf32_bfd_copy_private_bfd_data elf32_tic6x_copy_private_data
4488 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4489 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4490 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4491 #define bfd_elf32_bfd_link_hash_table_free elf32_tic6x_link_hash_table_free
4492 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4493 #define elf_backend_can_gc_sections 1
4494 #define elf_backend_default_use_rela_p 1
4495 #define elf_backend_may_use_rel_p 1
4496 #define elf_backend_may_use_rela_p 1
4497 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4498 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4499 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4500 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4501 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4502 #define elf_backend_obj_attrs_vendor "c6xabi"
4503 #define elf_backend_can_refcount 1
4504 #define elf_backend_want_got_plt 1
4505 #define elf_backend_want_dynbss 1
4506 #define elf_backend_plt_readonly 1
4507 #define elf_backend_rela_normal 1
4508 #define elf_backend_got_header_size 8
4509 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4510 #define elf_backend_gc_sweep_hook elf32_tic6x_gc_sweep_hook
4511 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4512 #define elf_backend_modify_program_headers \
4513 elf32_tic6x_modify_program_headers
4514 #define elf_backend_create_dynamic_sections \
4515 elf32_tic6x_create_dynamic_sections
4516 #define elf_backend_adjust_dynamic_symbol \
4517 elf32_tic6x_adjust_dynamic_symbol
4518 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4519 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4520 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4521 #define elf_backend_link_output_symbol_hook \
4522 elf32_tic6x_link_output_symbol_hook
4523 #define elf_backend_section_from_bfd_section \
4524 elf32_tic6x_section_from_bfd_section
4525 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4526 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4527 #define elf_backend_finish_dynamic_symbol \
4528 elf32_tic6x_finish_dynamic_symbol
4529 #define elf_backend_always_size_sections \
4530 elf32_tic6x_always_size_sections
4531 #define elf_backend_size_dynamic_sections \
4532 elf32_tic6x_size_dynamic_sections
4533 #define elf_backend_finish_dynamic_sections \
4534 elf32_tic6x_finish_dynamic_sections
4535 #define bfd_elf32_bfd_final_link \
4536 elf32_tic6x_final_link
4537 #define elf_backend_write_section elf32_tic6x_write_section
4538 #define elf_info_to_howto elf32_tic6x_info_to_howto
4539 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4540
4541 #undef elf_backend_omit_section_dynsym
4542 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4543 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4544
4545 #include "elf32-target.h"
4546
4547 #undef elf32_bed
4548 #define elf32_bed elf32_tic6x_linux_bed
4549
4550 #undef TARGET_LITTLE_SYM
4551 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_linux_le_vec
4552 #undef TARGET_LITTLE_NAME
4553 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4554 #undef TARGET_BIG_SYM
4555 #define TARGET_BIG_SYM bfd_elf32_tic6x_linux_be_vec
4556 #undef TARGET_BIG_NAME
4557 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4558 #undef ELF_OSABI
4559 #define ELF_OSABI ELFOSABI_C6000_LINUX
4560
4561 #undef elf_backend_post_process_headers
4562 #define elf_backend_post_process_headers elf32_tic6x_set_osabi
4563
4564 #include "elf32-target.h"
4565
4566 #undef elf32_bed
4567 #define elf32_bed elf32_tic6x_elf_bed
4568
4569 #undef TARGET_LITTLE_SYM
4570 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_elf_le_vec
4571 #undef TARGET_LITTLE_NAME
4572 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4573 #undef TARGET_BIG_SYM
4574 #define TARGET_BIG_SYM bfd_elf32_tic6x_elf_be_vec
4575 #undef TARGET_BIG_NAME
4576 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4577 #undef ELF_OSABI
4578 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4579
4580 #undef elf_backend_post_process_headers
4581 #define elf_backend_post_process_headers elf32_tic6x_set_osabi
4582
4583 #include "elf32-target.h"
GDB Binutils - Deliverables
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