1 /* 32-bit ELF support for TI C6X
2 Copyright (C) 2010-2016 Free Software Foundation, Inc.
3 Contributed by Joseph Myers <joseph@codesourcery.com>
4 Bernd Schmidt <bernds@codesourcery.com>
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
27 #include "libiberty.h"
29 #include "elf/tic6x.h"
30 #include "elf32-tic6x.h"
32 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
34 /* DSBT binaries have a default 128K stack. */
35 #define DEFAULT_STACK_SIZE 0x20000
37 /* The size in bytes of an entry in the procedure linkage table. */
38 #define PLT_ENTRY_SIZE 24
40 /* TI C6X ELF linker hash table. */
42 struct elf32_tic6x_link_hash_table
44 struct elf_link_hash_table elf
;
46 /* C6X specific command line arguments. */
47 struct elf32_tic6x_params params
;
49 /* Small local sym cache. */
50 struct sym_cache sym_cache
;
52 /* The output BFD, for convenience. */
55 /* The .dsbt section. */
59 /* Get the TI C6X ELF linker hash table from a link_info structure. */
61 #define elf32_tic6x_hash_table(p) \
62 ((struct elf32_tic6x_link_hash_table *) ((p)->hash))
64 /* TI C6X ELF linker hash entry. */
66 struct elf32_tic6x_link_hash_entry
68 struct elf_link_hash_entry elf
;
70 /* Track dynamic relocs copied for this symbol. */
71 struct elf_dyn_relocs
*dyn_relocs
;
77 INSERT_EXIDX_CANTUNWIND_AT_END
79 tic6x_unwind_edit_type
;
81 /* A (sorted) list of edits to apply to an unwind table. */
82 typedef struct tic6x_unwind_table_edit
84 tic6x_unwind_edit_type type
;
85 /* Note: we sometimes want to insert an unwind entry corresponding to a
86 section different from the one we're currently writing out, so record the
87 (text) section this edit relates to here. */
88 asection
*linked_section
;
90 struct tic6x_unwind_table_edit
*next
;
92 tic6x_unwind_table_edit
;
94 typedef struct _tic6x_elf_section_data
96 /* Information about mapping symbols. */
97 struct bfd_elf_section_data elf
;
98 /* Information about unwind tables. */
101 /* Unwind info attached to a text section. */
104 asection
*tic6x_exidx_sec
;
107 /* Unwind info attached to an .c6xabi.exidx section. */
110 tic6x_unwind_table_edit
*unwind_edit_list
;
111 tic6x_unwind_table_edit
*unwind_edit_tail
;
115 _tic6x_elf_section_data
;
117 #define elf32_tic6x_section_data(sec) \
118 ((_tic6x_elf_section_data *) elf_section_data (sec))
120 struct elf32_tic6x_obj_tdata
122 struct elf_obj_tdata root
;
124 /* Whether to use RELA relocations when generating relocations.
125 This is a per-object flag to allow the assembler to generate REL
126 relocations for use in linker testcases. */
127 bfd_boolean use_rela_p
;
130 #define elf32_tic6x_tdata(abfd) \
131 ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any)
133 #define is_tic6x_elf(bfd) \
134 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
135 && elf_tdata (bfd) != NULL \
136 && elf_object_id (bfd) == TIC6X_ELF_DATA)
138 /* C6X ELF uses two common sections. One is the usual one, and the
139 other is for small objects. All the small objects are kept
140 together, and then referenced via the gp pointer, which yields
141 faster assembler code. This is what we use for the small common
142 section. This approach is copied from ecoff.c. */
143 static asection tic6x_elf_scom_section
;
144 static asymbol tic6x_elf_scom_symbol
;
145 static asymbol
*tic6x_elf_scom_symbol_ptr
;
147 static reloc_howto_type elf32_tic6x_howto_table
[] =
149 HOWTO (R_C6000_NONE
, /* type */
151 3, /* size (0 = byte, 1 = short, 2 = long) */
153 FALSE
, /* pc_relative */
155 complain_overflow_dont
,/* complain_on_overflow */
156 bfd_elf_generic_reloc
, /* special_function */
157 "R_C6000_NONE", /* name */
158 FALSE
, /* partial_inplace */
161 FALSE
), /* pcrel_offset */
162 HOWTO (R_C6000_ABS32
, /* type */
164 2, /* size (0 = byte, 1 = short, 2 = long) */
166 FALSE
, /* pc_relative */
168 complain_overflow_dont
,/* complain_on_overflow */
169 bfd_elf_generic_reloc
, /* special_function */
170 "R_C6000_ABS32", /* name */
171 FALSE
, /* partial_inplace */
173 0xffffffff, /* dst_mask */
174 FALSE
), /* pcrel_offset */
175 HOWTO (R_C6000_ABS16
, /* type */
177 1, /* size (0 = byte, 1 = short, 2 = long) */
179 FALSE
, /* pc_relative */
181 complain_overflow_bitfield
,/* complain_on_overflow */
182 bfd_elf_generic_reloc
, /* special_function */
183 "R_C6000_ABS16", /* name */
184 FALSE
, /* partial_inplace */
186 0x0000ffff, /* dst_mask */
187 FALSE
), /* pcrel_offset */
188 HOWTO (R_C6000_ABS8
, /* type */
190 0, /* size (0 = byte, 1 = short, 2 = long) */
192 FALSE
, /* pc_relative */
194 complain_overflow_bitfield
,/* complain_on_overflow */
195 bfd_elf_generic_reloc
, /* special_function */
196 "R_C6000_ABS8", /* name */
197 FALSE
, /* partial_inplace */
199 0x000000ff, /* dst_mask */
200 FALSE
), /* pcrel_offset */
201 HOWTO (R_C6000_PCR_S21
, /* type */
203 2, /* size (0 = byte, 1 = short, 2 = long) */
205 TRUE
, /* pc_relative */
207 complain_overflow_signed
,/* complain_on_overflow */
208 bfd_elf_generic_reloc
, /* special_function */
209 "R_C6000_PCR_S21", /* name */
210 FALSE
, /* partial_inplace */
212 0x0fffff80, /* dst_mask */
213 TRUE
), /* pcrel_offset */
214 HOWTO (R_C6000_PCR_S12
, /* type */
216 2, /* size (0 = byte, 1 = short, 2 = long) */
218 TRUE
, /* pc_relative */
220 complain_overflow_signed
,/* complain_on_overflow */
221 bfd_elf_generic_reloc
, /* special_function */
222 "R_C6000_PCR_S12", /* name */
223 FALSE
, /* partial_inplace */
225 0x0fff0000, /* dst_mask */
226 TRUE
), /* pcrel_offset */
227 HOWTO (R_C6000_PCR_S10
, /* type */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
231 TRUE
, /* pc_relative */
233 complain_overflow_signed
,/* complain_on_overflow */
234 bfd_elf_generic_reloc
, /* special_function */
235 "R_C6000_PCR_S10", /* name */
236 FALSE
, /* partial_inplace */
238 0x007fe000, /* dst_mask */
239 TRUE
), /* pcrel_offset */
240 HOWTO (R_C6000_PCR_S7
, /* type */
242 2, /* size (0 = byte, 1 = short, 2 = long) */
244 TRUE
, /* pc_relative */
246 complain_overflow_signed
,/* complain_on_overflow */
247 bfd_elf_generic_reloc
, /* special_function */
248 "R_C6000_PCR_S7", /* name */
249 FALSE
, /* partial_inplace */
251 0x007f0000, /* dst_mask */
252 TRUE
), /* pcrel_offset */
253 HOWTO (R_C6000_ABS_S16
, /* type */
255 2, /* size (0 = byte, 1 = short, 2 = long) */
257 FALSE
, /* pc_relative */
259 complain_overflow_signed
,/* complain_on_overflow */
260 bfd_elf_generic_reloc
, /* special_function */
261 "R_C6000_ABS_S16", /* name */
262 FALSE
, /* partial_inplace */
264 0x007fff80, /* dst_mask */
265 FALSE
), /* pcrel_offset */
266 HOWTO (R_C6000_ABS_L16
, /* type */
268 2, /* size (0 = byte, 1 = short, 2 = long) */
270 FALSE
, /* pc_relative */
272 complain_overflow_dont
,/* complain_on_overflow */
273 bfd_elf_generic_reloc
, /* special_function */
274 "R_C6000_ABS_L16", /* name */
275 FALSE
, /* partial_inplace */
277 0x007fff80, /* dst_mask */
278 FALSE
), /* pcrel_offset */
279 HOWTO (R_C6000_ABS_H16
, /* type */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE
, /* pc_relative */
285 complain_overflow_dont
,/* complain_on_overflow */
286 bfd_elf_generic_reloc
, /* special_function */
287 "R_C6000_ABS_H16", /* name */
288 FALSE
, /* partial_inplace */
290 0x007fff80, /* dst_mask */
291 FALSE
), /* pcrel_offset */
292 HOWTO (R_C6000_SBR_U15_B
, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE
, /* pc_relative */
298 complain_overflow_unsigned
,/* complain_on_overflow */
299 bfd_elf_generic_reloc
, /* special_function */
300 "R_C6000_SBR_U15_B", /* name */
301 FALSE
, /* partial_inplace */
303 0x007fff00, /* dst_mask */
304 FALSE
), /* pcrel_offset */
305 HOWTO (R_C6000_SBR_U15_H
, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE
, /* pc_relative */
311 complain_overflow_unsigned
,/* complain_on_overflow */
312 bfd_elf_generic_reloc
, /* special_function */
313 "R_C6000_SBR_U15_H", /* name */
314 FALSE
, /* partial_inplace */
316 0x007fff00, /* dst_mask */
317 FALSE
), /* pcrel_offset */
318 HOWTO (R_C6000_SBR_U15_W
, /* type */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
322 FALSE
, /* pc_relative */
324 complain_overflow_unsigned
,/* complain_on_overflow */
325 bfd_elf_generic_reloc
, /* special_function */
326 "R_C6000_SBR_U15_W", /* name */
327 FALSE
, /* partial_inplace */
329 0x007fff00, /* dst_mask */
330 FALSE
), /* pcrel_offset */
331 HOWTO (R_C6000_SBR_S16
, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE
, /* pc_relative */
337 complain_overflow_signed
,/* complain_on_overflow */
338 bfd_elf_generic_reloc
, /* special_function */
339 "R_C6000_SBR_S16", /* name */
340 FALSE
, /* partial_inplace */
342 0x007fff80, /* dst_mask */
343 FALSE
), /* pcrel_offset */
344 HOWTO (R_C6000_SBR_L16_B
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 FALSE
, /* pc_relative */
350 complain_overflow_dont
,/* complain_on_overflow */
351 bfd_elf_generic_reloc
, /* special_function */
352 "R_C6000_SBR_L16_B", /* name */
353 FALSE
, /* partial_inplace */
355 0x007fff80, /* dst_mask */
356 FALSE
), /* pcrel_offset */
357 HOWTO (R_C6000_SBR_L16_H
, /* type */
359 2, /* size (0 = byte, 1 = short, 2 = long) */
361 FALSE
, /* pc_relative */
363 complain_overflow_dont
,/* complain_on_overflow */
364 bfd_elf_generic_reloc
, /* special_function */
365 "R_C6000_SBR_L16_H", /* name */
366 FALSE
, /* partial_inplace */
368 0x007fff80, /* dst_mask */
369 FALSE
), /* pcrel_offset */
370 HOWTO (R_C6000_SBR_L16_W
, /* type */
372 2, /* size (0 = byte, 1 = short, 2 = long) */
374 FALSE
, /* pc_relative */
376 complain_overflow_dont
,/* complain_on_overflow */
377 bfd_elf_generic_reloc
, /* special_function */
378 "R_C6000_SBR_L16_W", /* name */
379 FALSE
, /* partial_inplace */
381 0x007fff80, /* dst_mask */
382 FALSE
), /* pcrel_offset */
383 HOWTO (R_C6000_SBR_H16_B
, /* type */
385 2, /* size (0 = byte, 1 = short, 2 = long) */
387 FALSE
, /* pc_relative */
389 complain_overflow_dont
,/* complain_on_overflow */
390 bfd_elf_generic_reloc
, /* special_function */
391 "R_C6000_SBR_H16_B", /* name */
392 FALSE
, /* partial_inplace */
394 0x007fff80, /* dst_mask */
395 FALSE
), /* pcrel_offset */
396 HOWTO (R_C6000_SBR_H16_H
, /* type */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
400 FALSE
, /* pc_relative */
402 complain_overflow_dont
,/* complain_on_overflow */
403 bfd_elf_generic_reloc
, /* special_function */
404 "R_C6000_SBR_H16_H", /* name */
405 FALSE
, /* partial_inplace */
407 0x007fff80, /* dst_mask */
408 FALSE
), /* pcrel_offset */
409 HOWTO (R_C6000_SBR_H16_W
, /* type */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE
, /* pc_relative */
415 complain_overflow_dont
,/* complain_on_overflow */
416 bfd_elf_generic_reloc
, /* special_function */
417 "R_C6000_SBR_H16_W", /* name */
418 FALSE
, /* partial_inplace */
420 0x007fff80, /* dst_mask */
421 FALSE
), /* pcrel_offset */
422 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE
, /* pc_relative */
428 complain_overflow_unsigned
,/* complain_on_overflow */
429 bfd_elf_generic_reloc
, /* special_function */
430 "R_C6000_SBR_GOT_U15_W",/* name */
431 FALSE
, /* partial_inplace */
433 0x007fff00, /* dst_mask */
434 FALSE
), /* pcrel_offset */
435 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
437 2, /* size (0 = byte, 1 = short, 2 = long) */
439 FALSE
, /* pc_relative */
441 complain_overflow_dont
,/* complain_on_overflow */
442 bfd_elf_generic_reloc
, /* special_function */
443 "R_C6000_SBR_GOT_L16_W",/* name */
444 FALSE
, /* partial_inplace */
446 0x007fff80, /* dst_mask */
447 FALSE
), /* pcrel_offset */
448 HOWTO (R_C6000_SBR_GOT_H16_W
, /* type */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
452 FALSE
, /* pc_relative */
454 complain_overflow_dont
,/* complain_on_overflow */
455 bfd_elf_generic_reloc
, /* special_function */
456 "R_C6000_SBR_GOT_H16_W",/* name */
457 FALSE
, /* partial_inplace */
459 0x007fff80, /* dst_mask */
460 FALSE
), /* pcrel_offset */
461 HOWTO (R_C6000_DSBT_INDEX
, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 FALSE
, /* pc_relative */
467 complain_overflow_unsigned
,/* complain_on_overflow */
468 bfd_elf_generic_reloc
, /* special_function */
469 "R_C6000_DSBT_INDEX", /* name */
470 FALSE
, /* partial_inplace */
472 0x007fff00, /* dst_mask */
473 FALSE
), /* pcrel_offset */
474 HOWTO (R_C6000_PREL31
, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 TRUE
, /* pc_relative */
480 complain_overflow_dont
,/* complain_on_overflow */
481 bfd_elf_generic_reloc
, /* special_function */
482 "R_C6000_PREL31", /* name */
483 FALSE
, /* partial_inplace */
485 0x7fffffff, /* dst_mask */
486 TRUE
), /* pcrel_offset */
487 HOWTO (R_C6000_COPY
, /* type */
489 2, /* size (0 = byte, 1 = short, 2 = long) */
491 FALSE
, /* pc_relative */
493 complain_overflow_dont
,/* complain_on_overflow */
494 bfd_elf_generic_reloc
, /* special_function */
495 "R_C6000_COPY", /* name */
496 FALSE
, /* partial_inplace */
498 0xffffffff, /* dst_mask */
499 FALSE
), /* pcrel_offset */
500 HOWTO (R_C6000_JUMP_SLOT
, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE
, /* pc_relative */
506 complain_overflow_dont
,/* complain_on_overflow */
507 bfd_elf_generic_reloc
, /* special_function */
508 "R_C6000_JUMP_SLOT", /* name */
509 FALSE
, /* partial_inplace */
511 0xffffffff, /* dst_mask */
512 FALSE
), /* pcrel_offset */
513 HOWTO (R_C6000_EHTYPE
, /* type */
515 2, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE
, /* pc_relative */
519 complain_overflow_dont
,/* complain_on_overflow */
520 bfd_elf_generic_reloc
, /* special_function */
521 "R_C6000_EHTYPE", /* name */
522 FALSE
, /* partial_inplace */
524 0xffffffff, /* dst_mask */
525 FALSE
), /* pcrel_offset */
526 HOWTO (R_C6000_PCR_H16
, /* type */
528 2, /* size (0 = byte, 1 = short, 2 = long) */
530 TRUE
, /* pc_relative */
532 complain_overflow_dont
,/* complain_on_overflow */
533 bfd_elf_generic_reloc
, /* special_function */
534 "R_C6000_PCR_H16", /* name */
535 FALSE
, /* partial_inplace */
537 0x007fff80, /* dst_mask */
538 TRUE
), /* pcrel_offset */
539 HOWTO (R_C6000_PCR_L16
, /* type */
541 2, /* size (0 = byte, 1 = short, 2 = long) */
543 TRUE
, /* pc_relative */
545 complain_overflow_dont
,/* complain_on_overflow */
546 bfd_elf_generic_reloc
, /* special_function */
547 "R_C6000_PCR_L16", /* name */
548 FALSE
, /* partial_inplace */
550 0x007fff80, /* dst_mask */
551 TRUE
), /* pcrel_offset */
774 HOWTO (R_C6000_ALIGN
, /* type */
776 0, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE
, /* pc_relative */
780 complain_overflow_dont
,/* complain_on_overflow */
781 bfd_elf_generic_reloc
, /* special_function */
782 "R_C6000_ALIGN", /* name */
783 FALSE
, /* partial_inplace */
786 FALSE
), /* pcrel_offset */
787 HOWTO (R_C6000_FPHEAD
, /* type */
789 0, /* size (0 = byte, 1 = short, 2 = long) */
791 FALSE
, /* pc_relative */
793 complain_overflow_dont
,/* complain_on_overflow */
794 bfd_elf_generic_reloc
, /* special_function */
795 "R_C6000_FPHEAD", /* name */
796 FALSE
, /* partial_inplace */
799 FALSE
), /* pcrel_offset */
800 HOWTO (R_C6000_NOCMP
, /* type */
802 0, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE
, /* pc_relative */
806 complain_overflow_dont
,/* complain_on_overflow */
807 bfd_elf_generic_reloc
, /* special_function */
808 "R_C6000_NOCMP", /* name */
809 FALSE
, /* partial_inplace */
812 FALSE
) /* pcrel_offset */
815 static reloc_howto_type elf32_tic6x_howto_table_rel
[] =
817 HOWTO (R_C6000_NONE
, /* type */
819 3, /* size (0 = byte, 1 = short, 2 = long) */
821 FALSE
, /* pc_relative */
823 complain_overflow_dont
,/* complain_on_overflow */
824 bfd_elf_generic_reloc
, /* special_function */
825 "R_C6000_NONE", /* name */
826 TRUE
, /* partial_inplace */
829 FALSE
), /* pcrel_offset */
830 HOWTO (R_C6000_ABS32
, /* type */
832 2, /* size (0 = byte, 1 = short, 2 = long) */
834 FALSE
, /* pc_relative */
836 complain_overflow_dont
,/* complain_on_overflow */
837 bfd_elf_generic_reloc
, /* special_function */
838 "R_C6000_ABS32", /* name */
839 TRUE
, /* partial_inplace */
840 0xffffffff, /* src_mask */
841 0xffffffff, /* dst_mask */
842 FALSE
), /* pcrel_offset */
843 HOWTO (R_C6000_ABS16
, /* type */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE
, /* pc_relative */
849 complain_overflow_bitfield
,/* complain_on_overflow */
850 bfd_elf_generic_reloc
, /* special_function */
851 "R_C6000_ABS16", /* name */
852 TRUE
, /* partial_inplace */
853 0x0000ffff, /* src_mask */
854 0x0000ffff, /* dst_mask */
855 FALSE
), /* pcrel_offset */
856 HOWTO (R_C6000_ABS8
, /* type */
858 0, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE
, /* pc_relative */
862 complain_overflow_bitfield
,/* complain_on_overflow */
863 bfd_elf_generic_reloc
, /* special_function */
864 "R_C6000_ABS8", /* name */
865 TRUE
, /* partial_inplace */
866 0x000000ff, /* src_mask */
867 0x000000ff, /* dst_mask */
868 FALSE
), /* pcrel_offset */
869 HOWTO (R_C6000_PCR_S21
, /* type */
871 2, /* size (0 = byte, 1 = short, 2 = long) */
873 TRUE
, /* pc_relative */
875 complain_overflow_signed
,/* complain_on_overflow */
876 bfd_elf_generic_reloc
, /* special_function */
877 "R_C6000_PCR_S21", /* name */
878 TRUE
, /* partial_inplace */
879 0x0fffff80, /* src_mask */
880 0x0fffff80, /* dst_mask */
881 TRUE
), /* pcrel_offset */
882 HOWTO (R_C6000_PCR_S12
, /* type */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
886 TRUE
, /* pc_relative */
888 complain_overflow_signed
,/* complain_on_overflow */
889 bfd_elf_generic_reloc
, /* special_function */
890 "R_C6000_PCR_S12", /* name */
891 TRUE
, /* partial_inplace */
892 0x0fff0000, /* src_mask */
893 0x0fff0000, /* dst_mask */
894 TRUE
), /* pcrel_offset */
895 HOWTO (R_C6000_PCR_S10
, /* type */
897 2, /* size (0 = byte, 1 = short, 2 = long) */
899 TRUE
, /* pc_relative */
901 complain_overflow_signed
,/* complain_on_overflow */
902 bfd_elf_generic_reloc
, /* special_function */
903 "R_C6000_PCR_S10", /* name */
904 TRUE
, /* partial_inplace */
905 0x007fe000, /* src_mask */
906 0x007fe000, /* dst_mask */
907 TRUE
), /* pcrel_offset */
908 HOWTO (R_C6000_PCR_S7
, /* type */
910 2, /* size (0 = byte, 1 = short, 2 = long) */
912 TRUE
, /* pc_relative */
914 complain_overflow_signed
,/* complain_on_overflow */
915 bfd_elf_generic_reloc
, /* special_function */
916 "R_C6000_PCR_S7", /* name */
917 TRUE
, /* partial_inplace */
918 0x007f0000, /* src_mask */
919 0x007f0000, /* dst_mask */
920 TRUE
), /* pcrel_offset */
921 HOWTO (R_C6000_ABS_S16
, /* type */
923 2, /* size (0 = byte, 1 = short, 2 = long) */
925 FALSE
, /* pc_relative */
927 complain_overflow_signed
,/* complain_on_overflow */
928 bfd_elf_generic_reloc
, /* special_function */
929 "R_C6000_ABS_S16", /* name */
930 TRUE
, /* partial_inplace */
931 0x007fff80, /* src_mask */
932 0x007fff80, /* dst_mask */
933 FALSE
), /* pcrel_offset */
934 HOWTO (R_C6000_ABS_L16
, /* type */
936 2, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE
, /* pc_relative */
940 complain_overflow_dont
,/* complain_on_overflow */
941 bfd_elf_generic_reloc
, /* special_function */
942 "R_C6000_ABS_L16", /* name */
943 TRUE
, /* partial_inplace */
944 0x007fff80, /* src_mask */
945 0x007fff80, /* dst_mask */
946 FALSE
), /* pcrel_offset */
947 EMPTY_HOWTO (R_C6000_ABS_H16
),
948 HOWTO (R_C6000_SBR_U15_B
, /* type */
950 2, /* size (0 = byte, 1 = short, 2 = long) */
952 FALSE
, /* pc_relative */
954 complain_overflow_unsigned
,/* complain_on_overflow */
955 bfd_elf_generic_reloc
, /* special_function */
956 "R_C6000_SBR_U15_B", /* name */
957 TRUE
, /* partial_inplace */
958 0x007fff00, /* src_mask */
959 0x007fff00, /* dst_mask */
960 FALSE
), /* pcrel_offset */
961 HOWTO (R_C6000_SBR_U15_H
, /* type */
963 2, /* size (0 = byte, 1 = short, 2 = long) */
965 FALSE
, /* pc_relative */
967 complain_overflow_unsigned
,/* complain_on_overflow */
968 bfd_elf_generic_reloc
, /* special_function */
969 "R_C6000_SBR_U15_H", /* name */
970 TRUE
, /* partial_inplace */
971 0x007fff00, /* src_mask */
972 0x007fff00, /* dst_mask */
973 FALSE
), /* pcrel_offset */
974 HOWTO (R_C6000_SBR_U15_W
, /* type */
976 2, /* size (0 = byte, 1 = short, 2 = long) */
978 FALSE
, /* pc_relative */
980 complain_overflow_unsigned
,/* complain_on_overflow */
981 bfd_elf_generic_reloc
, /* special_function */
982 "R_C6000_SBR_U15_W", /* name */
983 TRUE
, /* partial_inplace */
984 0x007fff00, /* src_mask */
985 0x007fff00, /* dst_mask */
986 FALSE
), /* pcrel_offset */
987 HOWTO (R_C6000_SBR_S16
, /* type */
989 2, /* size (0 = byte, 1 = short, 2 = long) */
991 FALSE
, /* pc_relative */
993 complain_overflow_signed
,/* complain_on_overflow */
994 bfd_elf_generic_reloc
, /* special_function */
995 "R_C6000_SBR_S16", /* name */
996 TRUE
, /* partial_inplace */
997 0x007fff80, /* src_mask */
998 0x007fff80, /* dst_mask */
999 FALSE
), /* pcrel_offset */
1000 HOWTO (R_C6000_SBR_L16_B
, /* type */
1002 2, /* size (0 = byte, 1 = short, 2 = long) */
1004 FALSE
, /* pc_relative */
1006 complain_overflow_dont
,/* complain_on_overflow */
1007 bfd_elf_generic_reloc
, /* special_function */
1008 "R_C6000_SBR_L16_B", /* name */
1009 TRUE
, /* partial_inplace */
1010 0x007fff80, /* src_mask */
1011 0x007fff80, /* dst_mask */
1012 FALSE
), /* pcrel_offset */
1013 HOWTO (R_C6000_SBR_L16_H
, /* type */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1017 FALSE
, /* pc_relative */
1019 complain_overflow_dont
,/* complain_on_overflow */
1020 bfd_elf_generic_reloc
, /* special_function */
1021 "R_C6000_SBR_L16_H", /* name */
1022 TRUE
, /* partial_inplace */
1023 0x007fff80, /* src_mask */
1024 0x007fff80, /* dst_mask */
1025 FALSE
), /* pcrel_offset */
1026 HOWTO (R_C6000_SBR_L16_W
, /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE
, /* pc_relative */
1032 complain_overflow_dont
,/* complain_on_overflow */
1033 bfd_elf_generic_reloc
, /* special_function */
1034 "R_C6000_SBR_L16_W", /* name */
1035 TRUE
, /* partial_inplace */
1036 0x007fff80, /* src_mask */
1037 0x007fff80, /* dst_mask */
1038 FALSE
), /* pcrel_offset */
1039 EMPTY_HOWTO (R_C6000_SBR_H16_B
),
1040 EMPTY_HOWTO (R_C6000_SBR_H16_H
),
1041 EMPTY_HOWTO (R_C6000_SBR_H16_W
),
1042 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
1044 2, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE
, /* pc_relative */
1048 complain_overflow_unsigned
,/* complain_on_overflow */
1049 bfd_elf_generic_reloc
, /* special_function */
1050 "R_C6000_SBR_GOT_U15_W",/* name */
1051 TRUE
, /* partial_inplace */
1052 0x007fff00, /* src_mask */
1053 0x007fff00, /* dst_mask */
1054 FALSE
), /* pcrel_offset */
1055 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
1057 2, /* size (0 = byte, 1 = short, 2 = long) */
1059 FALSE
, /* pc_relative */
1061 complain_overflow_dont
,/* complain_on_overflow */
1062 bfd_elf_generic_reloc
, /* special_function */
1063 "R_C6000_SBR_GOT_L16_W",/* name */
1064 TRUE
, /* partial_inplace */
1065 0x007fff80, /* src_mask */
1066 0x007fff80, /* dst_mask */
1067 FALSE
), /* pcrel_offset */
1068 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W
),
1069 HOWTO (R_C6000_DSBT_INDEX
, /* type */
1071 2, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE
, /* pc_relative */
1075 complain_overflow_unsigned
,/* complain_on_overflow */
1076 bfd_elf_generic_reloc
, /* special_function */
1077 "R_C6000_DSBT_INDEX", /* name */
1078 TRUE
, /* partial_inplace */
1080 0x007fff00, /* dst_mask */
1081 FALSE
), /* pcrel_offset */
1082 HOWTO (R_C6000_PREL31
, /* type */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1086 TRUE
, /* pc_relative */
1088 complain_overflow_dont
,/* complain_on_overflow */
1089 bfd_elf_generic_reloc
, /* special_function */
1090 "R_C6000_PREL31", /* name */
1091 TRUE
, /* partial_inplace */
1093 0x7fffffff, /* dst_mask */
1094 TRUE
), /* pcrel_offset */
1095 HOWTO (R_C6000_COPY
, /* type */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE
, /* pc_relative */
1101 complain_overflow_dont
,/* complain_on_overflow */
1102 bfd_elf_generic_reloc
, /* special_function */
1103 "R_C6000_COPY", /* name */
1104 TRUE
, /* partial_inplace */
1106 0xffffffff, /* dst_mask */
1107 FALSE
), /* pcrel_offset */
1108 HOWTO (R_C6000_JUMP_SLOT
, /* type */
1110 2, /* size (0 = byte, 1 = short, 2 = long) */
1112 FALSE
, /* pc_relative */
1114 complain_overflow_dont
,/* complain_on_overflow */
1115 bfd_elf_generic_reloc
, /* special_function */
1116 "R_C6000_JUMP_SLOT", /* name */
1117 FALSE
, /* partial_inplace */
1119 0xffffffff, /* dst_mask */
1120 FALSE
), /* pcrel_offset */
1121 HOWTO (R_C6000_EHTYPE
, /* type */
1123 2, /* size (0 = byte, 1 = short, 2 = long) */
1125 FALSE
, /* pc_relative */
1127 complain_overflow_dont
,/* complain_on_overflow */
1128 bfd_elf_generic_reloc
, /* special_function */
1129 "R_C6000_EHTYPE", /* name */
1130 FALSE
, /* partial_inplace */
1132 0xffffffff, /* dst_mask */
1133 FALSE
), /* pcrel_offset */
1134 EMPTY_HOWTO (R_C6000_PCR_H16
),
1135 EMPTY_HOWTO (R_C6000_PCR_L16
),
1358 HOWTO (R_C6000_ALIGN
, /* type */
1360 0, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE
, /* pc_relative */
1364 complain_overflow_dont
,/* complain_on_overflow */
1365 bfd_elf_generic_reloc
, /* special_function */
1366 "R_C6000_ALIGN", /* name */
1367 TRUE
, /* partial_inplace */
1370 FALSE
), /* pcrel_offset */
1371 HOWTO (R_C6000_FPHEAD
, /* type */
1373 0, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE
, /* pc_relative */
1377 complain_overflow_dont
,/* complain_on_overflow */
1378 bfd_elf_generic_reloc
, /* special_function */
1379 "R_C6000_FPHEAD", /* name */
1380 TRUE
, /* partial_inplace */
1383 FALSE
), /* pcrel_offset */
1384 HOWTO (R_C6000_NOCMP
, /* type */
1386 0, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE
, /* pc_relative */
1390 complain_overflow_dont
,/* complain_on_overflow */
1391 bfd_elf_generic_reloc
, /* special_function */
1392 "R_C6000_NOCMP", /* name */
1393 TRUE
, /* partial_inplace */
1396 FALSE
) /* pcrel_offset */
1399 /* Map BFD relocations to ELF relocations. */
1403 bfd_reloc_code_real_type bfd_reloc_val
;
1404 enum elf_tic6x_reloc_type elf_reloc_val
;
1407 static const tic6x_reloc_map elf32_tic6x_reloc_map
[] =
1409 { BFD_RELOC_NONE
, R_C6000_NONE
},
1410 { BFD_RELOC_32
, R_C6000_ABS32
},
1411 { BFD_RELOC_16
, R_C6000_ABS16
},
1412 { BFD_RELOC_8
, R_C6000_ABS8
},
1413 { BFD_RELOC_C6000_PCR_S21
, R_C6000_PCR_S21
},
1414 { BFD_RELOC_C6000_PCR_S12
, R_C6000_PCR_S12
},
1415 { BFD_RELOC_C6000_PCR_S10
, R_C6000_PCR_S10
},
1416 { BFD_RELOC_C6000_PCR_S7
, R_C6000_PCR_S7
},
1417 { BFD_RELOC_C6000_ABS_S16
, R_C6000_ABS_S16
},
1418 { BFD_RELOC_C6000_ABS_L16
, R_C6000_ABS_L16
},
1419 { BFD_RELOC_C6000_ABS_H16
, R_C6000_ABS_H16
},
1420 { BFD_RELOC_C6000_SBR_U15_B
, R_C6000_SBR_U15_B
},
1421 { BFD_RELOC_C6000_SBR_U15_H
, R_C6000_SBR_U15_H
},
1422 { BFD_RELOC_C6000_SBR_U15_W
, R_C6000_SBR_U15_W
},
1423 { BFD_RELOC_C6000_SBR_S16
, R_C6000_SBR_S16
},
1424 { BFD_RELOC_C6000_SBR_L16_B
, R_C6000_SBR_L16_B
},
1425 { BFD_RELOC_C6000_SBR_L16_H
, R_C6000_SBR_L16_H
},
1426 { BFD_RELOC_C6000_SBR_L16_W
, R_C6000_SBR_L16_W
},
1427 { BFD_RELOC_C6000_SBR_H16_B
, R_C6000_SBR_H16_B
},
1428 { BFD_RELOC_C6000_SBR_H16_H
, R_C6000_SBR_H16_H
},
1429 { BFD_RELOC_C6000_SBR_H16_W
, R_C6000_SBR_H16_W
},
1430 { BFD_RELOC_C6000_SBR_GOT_U15_W
, R_C6000_SBR_GOT_U15_W
},
1431 { BFD_RELOC_C6000_SBR_GOT_L16_W
, R_C6000_SBR_GOT_L16_W
},
1432 { BFD_RELOC_C6000_SBR_GOT_H16_W
, R_C6000_SBR_GOT_H16_W
},
1433 { BFD_RELOC_C6000_DSBT_INDEX
, R_C6000_DSBT_INDEX
},
1434 { BFD_RELOC_C6000_PREL31
, R_C6000_PREL31
},
1435 { BFD_RELOC_C6000_COPY
, R_C6000_COPY
},
1436 { BFD_RELOC_C6000_JUMP_SLOT
, R_C6000_JUMP_SLOT
},
1437 { BFD_RELOC_C6000_EHTYPE
, R_C6000_EHTYPE
},
1438 { BFD_RELOC_C6000_PCR_H16
, R_C6000_PCR_H16
},
1439 { BFD_RELOC_C6000_PCR_L16
, R_C6000_PCR_L16
},
1440 { BFD_RELOC_C6000_ALIGN
, R_C6000_ALIGN
},
1441 { BFD_RELOC_C6000_FPHEAD
, R_C6000_FPHEAD
},
1442 { BFD_RELOC_C6000_NOCMP
, R_C6000_NOCMP
}
1445 static reloc_howto_type
*
1446 elf32_tic6x_reloc_type_lookup (bfd
*abfd
, bfd_reloc_code_real_type code
)
1450 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_reloc_map
); i
++)
1451 if (elf32_tic6x_reloc_map
[i
].bfd_reloc_val
== code
)
1453 enum elf_tic6x_reloc_type elf_reloc_val
;
1454 reloc_howto_type
*howto
;
1456 elf_reloc_val
= elf32_tic6x_reloc_map
[i
].elf_reloc_val
;
1457 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1458 howto
= &elf32_tic6x_howto_table
[elf_reloc_val
];
1460 howto
= &elf32_tic6x_howto_table_rel
[elf_reloc_val
];
1462 /* Some relocations are RELA-only; do not return them for
1464 if (howto
->name
== NULL
)
1473 static reloc_howto_type
*
1474 elf32_tic6x_reloc_name_lookup (bfd
*abfd
, const char *r_name
)
1476 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1480 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table
); i
++)
1481 if (elf32_tic6x_howto_table
[i
].name
!= NULL
1482 && strcasecmp (elf32_tic6x_howto_table
[i
].name
, r_name
) == 0)
1483 return &elf32_tic6x_howto_table
[i
];
1489 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table_rel
); i
++)
1490 if (elf32_tic6x_howto_table_rel
[i
].name
!= NULL
1491 && strcasecmp (elf32_tic6x_howto_table_rel
[i
].name
, r_name
) == 0)
1492 return &elf32_tic6x_howto_table_rel
[i
];
1499 elf32_tic6x_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1500 Elf_Internal_Rela
*elf_reloc
)
1502 unsigned int r_type
;
1504 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1505 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table
))
1506 bfd_reloc
->howto
= NULL
;
1508 bfd_reloc
->howto
= &elf32_tic6x_howto_table
[r_type
];
1512 elf32_tic6x_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1513 Elf_Internal_Rela
*elf_reloc
)
1515 unsigned int r_type
;
1517 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1518 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table_rel
))
1519 bfd_reloc
->howto
= NULL
;
1521 bfd_reloc
->howto
= &elf32_tic6x_howto_table_rel
[r_type
];
1525 elf32_tic6x_set_use_rela_p (bfd
*abfd
, bfd_boolean use_rela_p
)
1527 elf32_tic6x_tdata (abfd
)->use_rela_p
= use_rela_p
;
1530 /* Create an entry in a C6X ELF linker hash table. */
1532 static struct bfd_hash_entry
*
1533 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry
*entry
,
1534 struct bfd_hash_table
*table
,
1537 /* Allocate the structure if it has not already been allocated by a
1541 entry
= bfd_hash_allocate (table
,
1542 sizeof (struct elf32_tic6x_link_hash_entry
));
1547 /* Call the allocation method of the superclass. */
1548 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
1551 struct elf32_tic6x_link_hash_entry
*eh
;
1553 eh
= (struct elf32_tic6x_link_hash_entry
*) entry
;
1554 eh
->dyn_relocs
= NULL
;
1560 /* Create a C6X ELF linker hash table. */
1562 static struct bfd_link_hash_table
*
1563 elf32_tic6x_link_hash_table_create (bfd
*abfd
)
1565 struct elf32_tic6x_link_hash_table
*ret
;
1566 bfd_size_type amt
= sizeof (struct elf32_tic6x_link_hash_table
);
1568 ret
= bfd_zmalloc (amt
);
1572 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1573 elf32_tic6x_link_hash_newfunc
,
1574 sizeof (struct elf32_tic6x_link_hash_entry
),
1582 ret
->elf
.is_relocatable_executable
= 1;
1584 return &ret
->elf
.root
;
1588 elf32_tic6x_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
1590 if (bfd_link_pic (info
))
1592 obj_attribute
*out_attr
;
1593 out_attr
= elf_known_obj_attributes_proc (abfd
);
1594 if (out_attr
[Tag_ABI_PIC
].i
== 0)
1596 _bfd_error_handler (_("warning: generating a shared library "
1597 "containing non-PIC code"));
1599 if (out_attr
[Tag_ABI_PID
].i
== 0)
1601 _bfd_error_handler (_("warning: generating a shared library "
1602 "containing non-PID code"));
1605 /* Invoke the regular ELF backend linker to do all the work. */
1606 if (!bfd_elf_final_link (abfd
, info
))
1612 /* Called to pass PARAMS to the backend. We store them in the hash table
1613 associated with INFO. */
1616 elf32_tic6x_setup (struct bfd_link_info
*info
,
1617 struct elf32_tic6x_params
*params
)
1619 struct elf32_tic6x_link_hash_table
*htab
= elf32_tic6x_hash_table (info
);
1620 htab
->params
= *params
;
1623 /* Determine if we're dealing with a DSBT object. */
1626 elf32_tic6x_using_dsbt (bfd
*abfd
)
1628 return bfd_elf_get_obj_attr_int (abfd
, OBJ_ATTR_PROC
,
1632 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
1633 sections in DYNOBJ, and set up shortcuts to them in our hash
1637 elf32_tic6x_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
1639 struct elf32_tic6x_link_hash_table
*htab
;
1642 htab
= elf32_tic6x_hash_table (info
);
1646 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
1650 flags
= (SEC_ALLOC
| SEC_LOAD
1651 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1652 htab
->dsbt
= bfd_make_section_anyway_with_flags (dynobj
, ".dsbt",
1654 if (htab
->dsbt
== NULL
1655 || ! bfd_set_section_alignment (dynobj
, htab
->dsbt
, 2)
1656 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.splt
, 5))
1663 elf32_tic6x_mkobject (bfd
*abfd
)
1667 ret
= bfd_elf_allocate_object (abfd
, sizeof (struct elf32_tic6x_obj_tdata
),
1670 elf32_tic6x_set_use_rela_p (abfd
, TRUE
);
1674 /* Install relocation RELA into section SRELA, incrementing its
1678 elf32_tic6x_install_rela (bfd
*output_bfd
, asection
*srela
,
1679 Elf_Internal_Rela
*rela
)
1682 bfd_vma off
= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1683 loc
= srela
->contents
+ off
;
1684 BFD_ASSERT (off
< srela
->size
);
1685 bfd_elf32_swap_reloca_out (output_bfd
, rela
, loc
);
1688 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents
1689 of the GOT at this offset have been initialized with the relocation. */
1692 elf32_tic6x_make_got_dynreloc (bfd
*output_bfd
,
1693 struct elf32_tic6x_link_hash_table
*htab
,
1694 asection
*sym_sec
, bfd_vma offset
)
1696 asection
*sgot
= htab
->elf
.sgot
;
1697 Elf_Internal_Rela outrel
;
1700 outrel
.r_offset
= sgot
->output_section
->vma
+ sgot
->output_offset
+ offset
;
1701 outrel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
1702 if (sym_sec
&& sym_sec
->output_section
1703 && ! bfd_is_abs_section (sym_sec
->output_section
)
1704 && ! bfd_is_und_section (sym_sec
->output_section
))
1706 dynindx
= elf_section_data (sym_sec
->output_section
)->dynindx
;
1707 outrel
.r_addend
-= sym_sec
->output_section
->vma
;
1713 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_C6000_ABS32
);
1714 elf32_tic6x_install_rela (output_bfd
, htab
->elf
.srelgot
, &outrel
);
1717 /* Finish up dynamic symbol handling. We set the contents of various
1718 dynamic sections here. */
1721 elf32_tic6x_finish_dynamic_symbol (bfd
* output_bfd
,
1722 struct bfd_link_info
*info
,
1723 struct elf_link_hash_entry
*h
,
1724 Elf_Internal_Sym
* sym
)
1726 struct elf32_tic6x_link_hash_table
*htab
;
1728 htab
= elf32_tic6x_hash_table (info
);
1730 if (h
->plt
.offset
!= (bfd_vma
) -1)
1733 bfd_vma got_section_offset
, got_dp_offset
, rela_offset
;
1734 Elf_Internal_Rela rela
;
1736 asection
*plt
, *gotplt
, *relplt
;
1737 const struct elf_backend_data
*bed
;
1739 bed
= get_elf_backend_data (output_bfd
);
1741 BFD_ASSERT (htab
->elf
.splt
!= NULL
);
1742 plt
= htab
->elf
.splt
;
1743 gotplt
= htab
->elf
.sgotplt
;
1744 relplt
= htab
->elf
.srelplt
;
1746 /* This symbol has an entry in the procedure linkage table. Set
1749 if ((h
->dynindx
== -1
1750 && !((h
->forced_local
|| bfd_link_executable (info
))
1752 && h
->type
== STT_GNU_IFUNC
))
1758 /* Get the index in the procedure linkage table which
1759 corresponds to this symbol. This is the index of this symbol
1760 in all the symbols for which we are making plt entries. The
1761 first entry in the procedure linkage table is reserved.
1763 Get the offset into the .got table of the entry that
1764 corresponds to this function. Each .got entry is 4 bytes.
1765 The first three are reserved.
1767 For static executables, we don't reserve anything. */
1769 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1770 got_section_offset
= plt_index
+ bed
->got_header_size
/ 4;
1771 got_dp_offset
= got_section_offset
+ htab
->params
.dsbt_size
;
1772 rela_offset
= plt_index
* sizeof (Elf32_External_Rela
);
1774 got_section_offset
*= 4;
1776 /* Fill in the entry in the procedure linkage table. */
1778 /* ldw .d2t2 *+B14($GOT(f)), b2 */
1779 bfd_put_32 (output_bfd
, got_dp_offset
<< 8 | 0x0100006e,
1780 plt
->contents
+ h
->plt
.offset
);
1781 /* mvk .s2 low(rela_offset), b0 */
1782 bfd_put_32 (output_bfd
, (rela_offset
& 0xffff) << 7 | 0x0000002a,
1783 plt
->contents
+ h
->plt
.offset
+ 4);
1784 /* mvkh .s2 high(rela_offset), b0 */
1785 bfd_put_32 (output_bfd
, ((rela_offset
>> 16) & 0xffff) << 7 | 0x0000006a,
1786 plt
->contents
+ h
->plt
.offset
+ 8);
1788 bfd_put_32 (output_bfd
, 0x00002000,
1789 plt
->contents
+ h
->plt
.offset
+ 12);
1791 bfd_put_32 (output_bfd
, 0x00080362,
1792 plt
->contents
+ h
->plt
.offset
+ 16);
1794 bfd_put_32 (output_bfd
, 0x00008000,
1795 plt
->contents
+ h
->plt
.offset
+ 20);
1797 /* Fill in the entry in the global offset table. */
1798 bfd_put_32 (output_bfd
,
1799 (plt
->output_section
->vma
+ plt
->output_offset
),
1800 gotplt
->contents
+ got_section_offset
);
1802 /* Fill in the entry in the .rel.plt section. */
1803 rela
.r_offset
= (gotplt
->output_section
->vma
1804 + gotplt
->output_offset
1805 + got_section_offset
);
1806 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_JUMP_SLOT
);
1808 loc
= relplt
->contents
+ rela_offset
;
1809 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1811 if (!h
->def_regular
)
1813 /* Mark the symbol as undefined, rather than as defined in
1814 the .plt section. */
1815 sym
->st_shndx
= SHN_UNDEF
;
1820 if (h
->got
.offset
!= (bfd_vma
) -1)
1825 /* This symbol has an entry in the global offset table.
1828 sgot
= htab
->elf
.sgot
;
1829 srela
= htab
->elf
.srelgot
;
1830 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1832 /* If this is a -Bsymbolic link, and the symbol is defined
1833 locally, we just want to emit a RELATIVE reloc. Likewise if
1834 the symbol was forced to be local because of a version file.
1835 The entry in the global offset table will already have been
1836 initialized in the relocate_section function. */
1837 if (bfd_link_pic (info
)
1838 && (SYMBOLIC_BIND (info
, h
)
1839 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
1841 asection
*s
= h
->root
.u
.def
.section
;
1842 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, s
,
1843 h
->got
.offset
& ~(bfd_vma
) 1);
1847 Elf_Internal_Rela outrel
;
1848 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1849 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
1850 outrel
.r_offset
= (sgot
->output_section
->vma
1851 + sgot
->output_offset
1852 + (h
->got
.offset
& ~(bfd_vma
) 1));
1853 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_ABS32
);
1854 outrel
.r_addend
= 0;
1856 elf32_tic6x_install_rela (output_bfd
, srela
, &outrel
);
1862 Elf_Internal_Rela rel
;
1864 /* This symbol needs a copy reloc. Set it up. */
1866 if (h
->dynindx
== -1
1867 || (h
->root
.type
!= bfd_link_hash_defined
1868 && h
->root
.type
!= bfd_link_hash_defweak
)
1869 || htab
->elf
.srelbss
== NULL
)
1872 rel
.r_offset
= (h
->root
.u
.def
.value
1873 + h
->root
.u
.def
.section
->output_section
->vma
1874 + h
->root
.u
.def
.section
->output_offset
);
1875 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_COPY
);
1878 elf32_tic6x_install_rela (output_bfd
, htab
->elf
.srelbss
, &rel
);
1881 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1882 if (h
== elf_hash_table (info
)->hdynamic
1883 || h
== elf_hash_table (info
)->hgot
)
1884 sym
->st_shndx
= SHN_ABS
;
1889 /* Unwinding tables are not referenced directly. This pass marks them as
1890 required if the corresponding code section is marked. */
1893 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info
*info
,
1894 elf_gc_mark_hook_fn gc_mark_hook
)
1897 Elf_Internal_Shdr
**elf_shdrp
;
1900 _bfd_elf_gc_mark_extra_sections (info
, gc_mark_hook
);
1902 /* Marking EH data may cause additional code sections to be marked,
1903 requiring multiple passes. */
1908 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
1912 if (! is_tic6x_elf (sub
))
1915 elf_shdrp
= elf_elfsections (sub
);
1916 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
1918 Elf_Internal_Shdr
*hdr
;
1920 hdr
= &elf_section_data (o
)->this_hdr
;
1921 if (hdr
->sh_type
== SHT_C6000_UNWIND
1923 && hdr
->sh_link
< elf_numsections (sub
)
1925 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
1928 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
1938 /* Return TRUE if this is an unwinding table index. */
1941 is_tic6x_elf_unwind_section_name (const char *name
)
1943 return (CONST_STRNEQ (name
, ELF_STRING_C6000_unwind
)
1944 || CONST_STRNEQ (name
, ELF_STRING_C6000_unwind_once
));
1948 /* Set the type and flags for an unwinding index table. We do this by
1949 the section name, which is a hack, but ought to work. */
1952 elf32_tic6x_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1953 Elf_Internal_Shdr
*hdr
, asection
*sec
)
1957 name
= bfd_get_section_name (abfd
, sec
);
1959 if (is_tic6x_elf_unwind_section_name (name
))
1961 hdr
->sh_type
= SHT_C6000_UNWIND
;
1962 hdr
->sh_flags
|= SHF_LINK_ORDER
;
1968 /* Update the got entry reference counts for the section being removed. */
1971 elf32_tic6x_gc_sweep_hook (bfd
*abfd
,
1972 struct bfd_link_info
*info
,
1974 const Elf_Internal_Rela
*relocs
)
1976 struct elf32_tic6x_link_hash_table
*htab
;
1977 Elf_Internal_Shdr
*symtab_hdr
;
1978 struct elf_link_hash_entry
**sym_hashes
;
1979 bfd_signed_vma
*local_got_refcounts
;
1980 const Elf_Internal_Rela
*rel
, *relend
;
1982 if (bfd_link_relocatable (info
))
1985 htab
= elf32_tic6x_hash_table (info
);
1989 elf_section_data (sec
)->local_dynrel
= NULL
;
1991 symtab_hdr
= &elf_symtab_hdr (abfd
);
1992 sym_hashes
= elf_sym_hashes (abfd
);
1993 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1995 relend
= relocs
+ sec
->reloc_count
;
1996 for (rel
= relocs
; rel
< relend
; rel
++)
1998 unsigned long r_symndx
;
1999 unsigned int r_type
;
2000 struct elf_link_hash_entry
*h
= NULL
;
2002 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2003 if (r_symndx
>= symtab_hdr
->sh_info
)
2005 struct elf32_tic6x_link_hash_entry
*eh
;
2006 struct elf_dyn_relocs
**pp
;
2007 struct elf_dyn_relocs
*p
;
2009 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2010 while (h
->root
.type
== bfd_link_hash_indirect
2011 || h
->root
.type
== bfd_link_hash_warning
)
2012 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2013 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
2015 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
2018 /* Everything must go for SEC. */
2024 r_type
= ELF32_R_TYPE (rel
->r_info
);
2028 case R_C6000_SBR_GOT_U15_W
:
2029 case R_C6000_SBR_GOT_L16_W
:
2030 case R_C6000_SBR_GOT_H16_W
:
2031 case R_C6000_EHTYPE
:
2034 if (h
->got
.refcount
> 0)
2035 h
->got
.refcount
-= 1;
2037 else if (local_got_refcounts
!= NULL
)
2039 if (local_got_refcounts
[r_symndx
] > 0)
2040 local_got_refcounts
[r_symndx
] -= 1;
2052 /* Adjust a symbol defined by a dynamic object and referenced by a
2053 regular object. The current definition is in some section of the
2054 dynamic object, but we're not including those sections. We have to
2055 change the definition to something the rest of the link can
2059 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2060 struct elf_link_hash_entry
*h
)
2062 struct elf32_tic6x_link_hash_table
*htab
;
2066 dynobj
= elf_hash_table (info
)->dynobj
;
2068 /* Make sure we know what is going on here. */
2069 BFD_ASSERT (dynobj
!= NULL
2071 || h
->u
.weakdef
!= NULL
2072 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
2074 /* If this is a function, put it in the procedure linkage table. We
2075 will fill in the contents of the procedure linkage table later,
2076 when we know the address of the .got section. */
2077 if (h
->type
== STT_FUNC
2080 if (h
->plt
.refcount
<= 0
2081 || SYMBOL_CALLS_LOCAL (info
, h
)
2082 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2083 && h
->root
.type
== bfd_link_hash_undefweak
))
2085 /* This case can occur if we saw a PLT32 reloc in an input
2086 file, but the symbol was never referred to by a dynamic
2087 object, or if all references were garbage collected. In
2088 such a case, we don't actually need to build a procedure
2089 linkage table, and we can just do a PC32 reloc instead. */
2090 h
->plt
.offset
= (bfd_vma
) -1;
2097 /* If this is a weak symbol, and there is a real definition, the
2098 processor independent code will have arranged for us to see the
2099 real definition first, and we can just use the same value. */
2100 if (h
->u
.weakdef
!= NULL
)
2102 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
2103 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
2104 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
2105 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
2106 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
2110 /* This is a reference to a symbol defined by a dynamic object which
2111 is not a function. */
2113 /* If we are creating a shared library, we must presume that the
2114 only references to the symbol are via the global offset table.
2115 For such cases we need not do anything here; the relocations will
2116 be handled correctly by relocate_section. */
2117 if (bfd_link_pic (info
))
2120 /* If there are no references to this symbol that do not use the
2121 GOT, we don't need to generate a copy reloc. */
2122 if (!h
->non_got_ref
)
2125 /* If -z nocopyreloc was given, we won't generate them either. */
2126 if (info
->nocopyreloc
)
2132 htab
= elf32_tic6x_hash_table (info
);
2136 /* We must allocate the symbol in our .dynbss section, which will
2137 become part of the .bss section of the executable. There will be
2138 an entry for this symbol in the .dynsym section. The dynamic
2139 object will contain position independent code, so all references
2140 from the dynamic object to this symbol will go through the global
2141 offset table. The dynamic linker will use the .dynsym entry to
2142 determine the address it must put in the global offset table, so
2143 both the dynamic object and the regular object will refer to the
2144 same memory location for the variable. */
2146 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2147 copy the initial value out of the dynamic object and into the
2148 runtime process image. */
2149 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2151 htab
->elf
.srelbss
->size
+= sizeof (Elf32_External_Rela
);
2155 s
= htab
->elf
.sdynbss
;
2157 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2161 elf32_tic6x_new_section_hook (bfd
*abfd
, asection
*sec
)
2165 /* Allocate target specific section data. */
2166 if (!sec
->used_by_bfd
)
2168 _tic6x_elf_section_data
*sdata
;
2169 bfd_size_type amt
= sizeof (*sdata
);
2171 sdata
= (_tic6x_elf_section_data
*) bfd_zalloc (abfd
, amt
);
2174 sec
->used_by_bfd
= sdata
;
2177 ret
= _bfd_elf_new_section_hook (abfd
, sec
);
2178 sec
->use_rela_p
= elf32_tic6x_tdata (abfd
)->use_rela_p
;
2183 /* Return true if relocation REL against section SEC is a REL rather
2184 than RELA relocation. RELOCS is the first relocation in the
2185 section and ABFD is the bfd that contains SEC. */
2188 elf32_tic6x_rel_relocation_p (bfd
*abfd
, asection
*sec
,
2189 const Elf_Internal_Rela
*relocs
,
2190 const Elf_Internal_Rela
*rel
)
2192 Elf_Internal_Shdr
*rel_hdr
;
2193 const struct elf_backend_data
*bed
;
2195 /* To determine which flavor of relocation this is, we depend on the
2196 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2197 rel_hdr
= elf_section_data (sec
)->rel
.hdr
;
2198 if (rel_hdr
== NULL
)
2200 bed
= get_elf_backend_data (abfd
);
2201 return ((size_t) (rel
- relocs
)
2202 < NUM_SHDR_ENTRIES (rel_hdr
) * bed
->s
->int_rels_per_ext_rel
);
2205 /* We need dynamic symbols for every section, since segments can
2206 relocate independently. */
2208 elf32_tic6x_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2209 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2212 switch (elf_section_data (p
)->this_hdr
.sh_type
)
2216 /* If sh_type is yet undecided, assume it could be
2217 SHT_PROGBITS/SHT_NOBITS. */
2221 /* There shouldn't be section relative relocations
2222 against any other section. */
2229 elf32_tic6x_relocate_section (bfd
*output_bfd
,
2230 struct bfd_link_info
*info
,
2232 asection
*input_section
,
2234 Elf_Internal_Rela
*relocs
,
2235 Elf_Internal_Sym
*local_syms
,
2236 asection
**local_sections
)
2238 struct elf32_tic6x_link_hash_table
*htab
;
2239 Elf_Internal_Shdr
*symtab_hdr
;
2240 struct elf_link_hash_entry
**sym_hashes
;
2241 bfd_vma
*local_got_offsets
;
2242 Elf_Internal_Rela
*rel
;
2243 Elf_Internal_Rela
*relend
;
2244 bfd_boolean ok
= TRUE
;
2246 htab
= elf32_tic6x_hash_table (info
);
2247 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
2248 sym_hashes
= elf_sym_hashes (input_bfd
);
2249 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2251 relend
= relocs
+ input_section
->reloc_count
;
2253 for (rel
= relocs
; rel
< relend
; rel
++)
2256 unsigned long r_symndx
;
2258 reloc_howto_type
*howto
;
2259 Elf_Internal_Sym
*sym
;
2261 struct elf_link_hash_entry
*h
;
2262 bfd_vma off
, off2
, relocation
;
2263 bfd_boolean unresolved_reloc
;
2264 bfd_reloc_status_type r
;
2265 struct bfd_link_hash_entry
*sbh
;
2268 r_type
= ELF32_R_TYPE (rel
->r_info
);
2269 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2271 is_rel
= elf32_tic6x_rel_relocation_p (input_bfd
, input_section
,
2275 elf32_tic6x_info_to_howto_rel (input_bfd
, &bfd_reloc
, rel
);
2277 elf32_tic6x_info_to_howto (input_bfd
, &bfd_reloc
, rel
);
2278 howto
= bfd_reloc
.howto
;
2281 bfd_set_error (bfd_error_bad_value
);
2288 unresolved_reloc
= FALSE
;
2290 if (r_symndx
< symtab_hdr
->sh_info
)
2292 sym
= local_syms
+ r_symndx
;
2293 sec
= local_sections
[r_symndx
];
2294 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2298 bfd_boolean warned
, ignored
;
2300 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2301 r_symndx
, symtab_hdr
, sym_hashes
,
2303 unresolved_reloc
, warned
, ignored
);
2306 if (sec
!= NULL
&& discarded_section (sec
))
2307 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2308 rel
, 1, relend
, howto
, 0, contents
);
2310 if (bfd_link_relocatable (info
))
2314 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2317 relocation
= sec
->output_offset
+ sym
->st_value
;
2318 r
= _bfd_relocate_contents (howto
, input_bfd
, relocation
,
2319 contents
+ rel
->r_offset
);
2329 case R_C6000_FPHEAD
:
2331 /* No action needed. */
2334 case R_C6000_PCR_S21
:
2335 /* A branch to an undefined weak symbol is turned into a
2336 "b .s2 B3" instruction if the existing insn is of the
2337 form "b .s2 symbol". */
2338 if (h
? h
->root
.type
== bfd_link_hash_undefweak
2339 && (htab
->elf
.splt
== NULL
|| h
->plt
.offset
== (bfd_vma
) -1)
2340 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2342 unsigned long oldval
;
2343 oldval
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2345 if ((oldval
& 0x7e) == 0x12)
2347 oldval
&= 0xF0000001;
2348 bfd_put_32 (input_bfd
, oldval
| 0x000c0362,
2349 contents
+ rel
->r_offset
);
2356 case R_C6000_PCR_S12
:
2357 case R_C6000_PCR_S10
:
2358 case R_C6000_PCR_S7
:
2360 && h
->plt
.offset
!= (bfd_vma
) -1
2361 && htab
->elf
.splt
!= NULL
)
2363 relocation
= (htab
->elf
.splt
->output_section
->vma
2364 + htab
->elf
.splt
->output_offset
2368 /* Generic PC-relative handling produces a value relative to
2369 the exact location of the relocation. Adjust it to be
2370 relative to the start of the fetch packet instead. */
2371 relocation
+= (input_section
->output_section
->vma
2372 + input_section
->output_offset
2373 + rel
->r_offset
) & 0x1f;
2374 unresolved_reloc
= FALSE
;
2377 case R_C6000_PCR_H16
:
2378 case R_C6000_PCR_L16
:
2379 off
= (input_section
->output_section
->vma
2380 + input_section
->output_offset
2382 /* These must be calculated as R = S - FP(FP(PC) - A).
2383 PC, here, is the value we just computed in OFF. RELOCATION
2384 has the address of S + A. */
2385 relocation
-= rel
->r_addend
;
2386 off2
= ((off
& ~(bfd_vma
)0x1f) - rel
->r_addend
) & (bfd_vma
)~0x1f;
2387 off2
= relocation
- off2
;
2388 relocation
= off
+ off2
;
2391 case R_C6000_DSBT_INDEX
:
2392 relocation
= elf32_tic6x_hash_table (info
)->params
.dsbt_index
;
2393 if (!bfd_link_pic (info
) || relocation
!= 0)
2400 case R_C6000_ABS_S16
:
2401 case R_C6000_ABS_L16
:
2402 case R_C6000_ABS_H16
:
2403 /* When generating a shared object or relocatable executable, these
2404 relocations are copied into the output file to be resolved at
2406 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
2407 && (input_section
->flags
& SEC_ALLOC
)
2409 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2410 || h
->root
.type
!= bfd_link_hash_undefweak
))
2412 Elf_Internal_Rela outrel
;
2413 bfd_boolean skip
, relocate
;
2416 unresolved_reloc
= FALSE
;
2418 sreloc
= elf_section_data (input_section
)->sreloc
;
2419 BFD_ASSERT (sreloc
!= NULL
&& sreloc
->contents
!= NULL
);
2425 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2427 if (outrel
.r_offset
== (bfd_vma
) -1)
2429 else if (outrel
.r_offset
== (bfd_vma
) -2)
2430 skip
= TRUE
, relocate
= TRUE
;
2431 outrel
.r_offset
+= (input_section
->output_section
->vma
2432 + input_section
->output_offset
);
2435 memset (&outrel
, 0, sizeof outrel
);
2438 && (!bfd_link_pic (info
)
2439 || !SYMBOLIC_BIND (info
, h
)
2440 || !h
->def_regular
))
2442 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2443 outrel
.r_addend
= rel
->r_addend
;
2449 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2451 if (bfd_is_abs_section (sec
))
2453 else if (sec
== NULL
|| sec
->owner
== NULL
)
2455 bfd_set_error (bfd_error_bad_value
);
2462 osec
= sec
->output_section
;
2463 indx
= elf_section_data (osec
)->dynindx
;
2464 outrel
.r_addend
-= osec
->vma
;
2465 BFD_ASSERT (indx
!= 0);
2468 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
2471 elf32_tic6x_install_rela (output_bfd
, sreloc
, &outrel
);
2473 /* If this reloc is against an external symbol, we do not want to
2474 fiddle with the addend. Otherwise, we need to include the symbol
2475 value so that it becomes an addend for the dynamic reloc. */
2480 /* Generic logic OK. */
2483 case R_C6000_SBR_U15_B
:
2484 case R_C6000_SBR_U15_H
:
2485 case R_C6000_SBR_U15_W
:
2486 case R_C6000_SBR_S16
:
2487 case R_C6000_SBR_L16_B
:
2488 case R_C6000_SBR_L16_H
:
2489 case R_C6000_SBR_L16_W
:
2490 case R_C6000_SBR_H16_B
:
2491 case R_C6000_SBR_H16_H
:
2492 case R_C6000_SBR_H16_W
:
2493 sbh
= bfd_link_hash_lookup (info
->hash
, "__c6xabi_DSBT_BASE",
2494 FALSE
, FALSE
, TRUE
);
2496 && (sbh
->type
== bfd_link_hash_defined
2497 || sbh
->type
== bfd_link_hash_defweak
))
2499 if (h
? (h
->root
.type
== bfd_link_hash_undefweak
2500 && (htab
->elf
.splt
== NULL
2501 || h
->plt
.offset
== (bfd_vma
) -1))
2502 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2505 relocation
-= (sbh
->u
.def
.value
2506 + sbh
->u
.def
.section
->output_section
->vma
2507 + sbh
->u
.def
.section
->output_offset
);
2511 _bfd_error_handler (_("%B: SB-relative relocation but "
2512 "__c6xabi_DSBT_BASE not defined"),
2519 case R_C6000_SBR_GOT_U15_W
:
2520 case R_C6000_SBR_GOT_L16_W
:
2521 case R_C6000_SBR_GOT_H16_W
:
2522 case R_C6000_EHTYPE
:
2523 /* Relocation is to the entry for this symbol in the global
2525 if (htab
->elf
.sgot
== NULL
)
2532 off
= h
->got
.offset
;
2533 dyn
= htab
->elf
.dynamic_sections_created
;
2534 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2535 bfd_link_pic (info
),
2537 || (bfd_link_pic (info
)
2538 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2539 || (ELF_ST_VISIBILITY (h
->other
)
2540 && h
->root
.type
== bfd_link_hash_undefweak
))
2542 /* This is actually a static link, or it is a
2543 -Bsymbolic link and the symbol is defined
2544 locally, or the symbol was forced to be local
2545 because of a version file. We must initialize
2546 this entry in the global offset table. Since the
2547 offset must always be a multiple of 4, we use the
2548 least significant bit to record whether we have
2549 initialized it already.
2551 When doing a dynamic link, we create a .rel.got
2552 relocation entry to initialize the value. This
2553 is done in the finish_dynamic_symbol routine. */
2558 bfd_put_32 (output_bfd
, relocation
,
2559 htab
->elf
.sgot
->contents
+ off
);
2562 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2563 bfd_link_pic (info
),
2565 && !(ELF_ST_VISIBILITY (h
->other
)
2566 && h
->root
.type
== bfd_link_hash_undefweak
))
2567 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
,
2572 unresolved_reloc
= FALSE
;
2576 if (local_got_offsets
== NULL
)
2579 off
= local_got_offsets
[r_symndx
];
2581 /* The offset must always be a multiple of 4. We use
2582 the least significant bit to record whether we have
2583 already generated the necessary reloc. */
2588 bfd_put_32 (output_bfd
, relocation
,
2589 htab
->elf
.sgot
->contents
+ off
);
2591 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
2592 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
, off
);
2594 local_got_offsets
[r_symndx
] |= 1;
2598 if (off
>= (bfd_vma
) -2)
2602 relocation
= (htab
->elf
.sgot
->output_section
->vma
2603 + htab
->elf
.sgot
->output_offset
+ off
2604 - htab
->dsbt
->output_section
->vma
2605 - htab
->dsbt
->output_offset
);
2607 relocation
= (htab
->elf
.sgot
->output_section
->vma
2608 + htab
->elf
.sgot
->output_offset
+ off
2609 - htab
->elf
.sgotplt
->output_section
->vma
2610 - htab
->elf
.sgotplt
->output_offset
);
2612 if (rel
->r_addend
!= 0)
2614 /* We can't do anything for a relocation which is against
2615 a symbol *plus offset*. GOT holds relocations for
2616 symbols. Make this an error; the compiler isn't
2617 allowed to pass us these kinds of things. */
2620 /* xgettext:c-format */
2621 (_("%B, section %A: relocation %s with non-zero addend %d"
2622 " against local symbol"),
2625 elf32_tic6x_howto_table
[r_type
].name
,
2629 /* xgettext:c-format */
2630 (_("%B, section %A: relocation %s with non-zero addend %d"
2631 " against symbol `%s'"),
2634 elf32_tic6x_howto_table
[r_type
].name
,
2636 h
->root
.root
.string
[0] != '\0' ? h
->root
.root
.string
2637 : _("[whose name is lost]"));
2639 bfd_set_error (bfd_error_bad_value
);
2644 case R_C6000_PREL31
:
2646 && h
->plt
.offset
!= (bfd_vma
) -1
2647 && htab
->elf
.splt
!= NULL
)
2649 relocation
= (htab
->elf
.splt
->output_section
->vma
2650 + htab
->elf
.splt
->output_offset
2656 /* Invalid in relocatable object. */
2658 /* Unknown relocation. */
2659 /* xgettext:c-format */
2660 _bfd_error_handler (_("%B: invalid relocation type %d"),
2666 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2667 contents
, rel
->r_offset
,
2668 relocation
, rel
->r_addend
);
2671 if (r
== bfd_reloc_ok
2672 && howto
->complain_on_overflow
== complain_overflow_bitfield
)
2674 /* Generic overflow handling accepts cases the ABI says
2675 should be rejected for R_C6000_ABS16 and
2677 bfd_vma value
= (relocation
+ rel
->r_addend
) & 0xffffffff;
2678 bfd_vma sbit
= 1 << (howto
->bitsize
- 1);
2679 bfd_vma sbits
= (-(bfd_vma
) sbit
) & 0xffffffff;
2680 bfd_vma value_sbits
= value
& sbits
;
2682 if (value_sbits
!= 0
2683 && value_sbits
!= sbit
2684 && value_sbits
!= sbits
)
2685 r
= bfd_reloc_overflow
;
2688 if (r
!= bfd_reloc_ok
)
2691 const char *error_message
;
2694 name
= h
->root
.root
.string
;
2697 name
= bfd_elf_string_from_elf_section (input_bfd
,
2698 symtab_hdr
->sh_link
,
2703 name
= bfd_section_name (input_bfd
, sec
);
2708 case bfd_reloc_overflow
:
2709 /* If the overflowing reloc was to an undefined symbol,
2710 we have already printed one error message and there
2711 is no point complaining again. */
2712 if (!h
|| h
->root
.type
!= bfd_link_hash_undefined
)
2713 (*info
->callbacks
->reloc_overflow
)
2714 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2715 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
2718 case bfd_reloc_undefined
:
2719 (*info
->callbacks
->undefined_symbol
) (info
, name
, input_bfd
,
2721 rel
->r_offset
, TRUE
);
2724 case bfd_reloc_outofrange
:
2725 error_message
= _("out of range");
2728 case bfd_reloc_notsupported
:
2729 error_message
= _("unsupported relocation");
2732 case bfd_reloc_dangerous
:
2733 error_message
= _("dangerous relocation");
2737 error_message
= _("unknown error");
2741 BFD_ASSERT (error_message
!= NULL
);
2742 (*info
->callbacks
->reloc_dangerous
)
2743 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
2753 /* Look through the relocs for a section during the first phase, and
2754 calculate needed space in the global offset table, procedure linkage
2755 table, and dynamic reloc sections. */
2758 elf32_tic6x_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2759 asection
*sec
, const Elf_Internal_Rela
*relocs
)
2761 struct elf32_tic6x_link_hash_table
*htab
;
2762 Elf_Internal_Shdr
*symtab_hdr
;
2763 struct elf_link_hash_entry
**sym_hashes
;
2764 const Elf_Internal_Rela
*rel
;
2765 const Elf_Internal_Rela
*rel_end
;
2768 if (bfd_link_relocatable (info
))
2771 htab
= elf32_tic6x_hash_table (info
);
2772 symtab_hdr
= &elf_symtab_hdr (abfd
);
2773 sym_hashes
= elf_sym_hashes (abfd
);
2775 /* Create dynamic sections for relocatable executables so that we can
2776 copy relocations. */
2777 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (abfd
))
2778 && ! htab
->elf
.dynamic_sections_created
)
2780 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
2786 rel_end
= relocs
+ sec
->reloc_count
;
2787 for (rel
= relocs
; rel
< rel_end
; rel
++)
2789 unsigned int r_type
;
2790 unsigned long r_symndx
;
2791 struct elf_link_hash_entry
*h
;
2792 Elf_Internal_Sym
*isym
;
2794 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2795 r_type
= ELF32_R_TYPE (rel
->r_info
);
2797 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
2799 /* xgettext:c-format */
2800 _bfd_error_handler (_("%B: bad symbol index: %d"),
2805 if (r_symndx
< symtab_hdr
->sh_info
)
2807 /* A local symbol. */
2808 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2817 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2818 while (h
->root
.type
== bfd_link_hash_indirect
2819 || h
->root
.type
== bfd_link_hash_warning
)
2820 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2822 /* PR15323, ref flags aren't set for references in the same
2824 h
->root
.non_ir_ref
= 1;
2829 case R_C6000_PCR_S21
:
2830 case R_C6000_PREL31
:
2831 /* This symbol requires a procedure linkage table entry. We
2832 actually build the entry in adjust_dynamic_symbol,
2833 because this might be a case of linking PIC code which is
2834 never referenced by a dynamic object, in which case we
2835 don't need to generate a procedure linkage table entry
2838 /* If this is a local symbol, we resolve it directly without
2839 creating a procedure linkage table entry. */
2844 h
->plt
.refcount
+= 1;
2847 case R_C6000_SBR_GOT_U15_W
:
2848 case R_C6000_SBR_GOT_L16_W
:
2849 case R_C6000_SBR_GOT_H16_W
:
2850 case R_C6000_EHTYPE
:
2851 /* This symbol requires a global offset table entry. */
2854 h
->got
.refcount
+= 1;
2858 bfd_signed_vma
*local_got_refcounts
;
2860 /* This is a global offset table entry for a local symbol. */
2861 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2862 if (local_got_refcounts
== NULL
)
2866 size
= symtab_hdr
->sh_info
;
2867 size
*= (sizeof (bfd_signed_vma
)
2868 + sizeof (bfd_vma
) + sizeof(char));
2869 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2870 if (local_got_refcounts
== NULL
)
2872 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2874 local_got_refcounts
[r_symndx
] += 1;
2877 if (htab
->elf
.sgot
== NULL
)
2879 if (htab
->elf
.dynobj
== NULL
)
2880 htab
->elf
.dynobj
= abfd
;
2881 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2886 case R_C6000_DSBT_INDEX
:
2887 /* We'd like to check for nonzero dsbt_index here, but it's
2888 set up only after check_relocs is called. Instead, we
2889 store the number of R_C6000_DSBT_INDEX relocs in the
2890 pc_count field, and potentially discard the extra space
2891 in elf32_tic6x_allocate_dynrelocs. */
2892 if (!bfd_link_pic (info
))
2899 case R_C6000_ABS_S16
:
2900 case R_C6000_ABS_L16
:
2901 case R_C6000_ABS_H16
:
2902 /* If we are creating a shared library, and this is a reloc
2903 against a global symbol, or a non PC relative reloc
2904 against a local symbol, then we need to copy the reloc
2905 into the shared library. However, if we are linking with
2906 -Bsymbolic, we do not need to copy a reloc against a
2907 global symbol which is defined in an object we are
2908 including in the link (i.e., DEF_REGULAR is set). At
2909 this point we have not seen all the input files, so it is
2910 possible that DEF_REGULAR is not set now but will be set
2911 later (it is never cleared). In case of a weak definition,
2912 DEF_REGULAR may be cleared later by a strong definition in
2913 a shared library. We account for that possibility below by
2914 storing information in the relocs_copied field of the hash
2915 table entry. A similar situation occurs when creating
2916 shared libraries and symbol visibility changes render the
2919 If on the other hand, we are creating an executable, we
2920 may need to keep relocations for symbols satisfied by a
2921 dynamic library if we manage to avoid copy relocs for the
2923 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (abfd
))
2924 && (sec
->flags
& SEC_ALLOC
) != 0)
2926 struct elf_dyn_relocs
*p
;
2927 struct elf_dyn_relocs
**head
;
2929 /* We must copy these reloc types into the output file.
2930 Create a reloc section in dynobj and make room for
2934 if (htab
->elf
.dynobj
== NULL
)
2935 htab
->elf
.dynobj
= abfd
;
2937 sreloc
= _bfd_elf_make_dynamic_reloc_section
2938 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela? */ TRUE
);
2944 /* If this is a global symbol, we count the number of
2945 relocations we need for this symbol. */
2948 head
= &((struct elf32_tic6x_link_hash_entry
*) h
)->dyn_relocs
;
2952 /* Track dynamic relocs needed for local syms too.
2953 We really need local syms available to do this
2958 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2962 vpp
= &elf_section_data (s
)->local_dynrel
;
2963 head
= (struct elf_dyn_relocs
**)vpp
;
2967 if (p
== NULL
|| p
->sec
!= sec
)
2969 bfd_size_type amt
= sizeof *p
;
2970 p
= bfd_alloc (htab
->elf
.dynobj
, amt
);
2981 if (r_type
== R_C6000_DSBT_INDEX
)
2986 case R_C6000_SBR_U15_B
:
2987 case R_C6000_SBR_U15_H
:
2988 case R_C6000_SBR_U15_W
:
2989 case R_C6000_SBR_S16
:
2990 case R_C6000_SBR_L16_B
:
2991 case R_C6000_SBR_L16_H
:
2992 case R_C6000_SBR_L16_W
:
2993 case R_C6000_SBR_H16_B
:
2994 case R_C6000_SBR_H16_H
:
2995 case R_C6000_SBR_H16_W
:
2996 if (h
!= NULL
&& bfd_link_executable (info
))
2998 /* For B14-relative addresses, we might need a copy
3013 elf32_tic6x_add_symbol_hook (bfd
*abfd
,
3014 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3015 Elf_Internal_Sym
*sym
,
3016 const char **namep ATTRIBUTE_UNUSED
,
3017 flagword
*flagsp ATTRIBUTE_UNUSED
,
3021 switch (sym
->st_shndx
)
3023 case SHN_TIC6X_SCOMMON
:
3024 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
3025 (*secp
)->flags
|= SEC_IS_COMMON
;
3026 *valp
= sym
->st_size
;
3027 (void) bfd_set_section_alignment (abfd
, *secp
, bfd_log2 (sym
->st_value
));
3035 elf32_tic6x_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
3037 elf_symbol_type
*elfsym
;
3039 elfsym
= (elf_symbol_type
*) asym
;
3040 switch (elfsym
->internal_elf_sym
.st_shndx
)
3042 case SHN_TIC6X_SCOMMON
:
3043 if (tic6x_elf_scom_section
.name
== NULL
)
3045 /* Initialize the small common section. */
3046 tic6x_elf_scom_section
.name
= ".scommon";
3047 tic6x_elf_scom_section
.flags
= SEC_IS_COMMON
;
3048 tic6x_elf_scom_section
.output_section
= &tic6x_elf_scom_section
;
3049 tic6x_elf_scom_section
.symbol
= &tic6x_elf_scom_symbol
;
3050 tic6x_elf_scom_section
.symbol_ptr_ptr
= &tic6x_elf_scom_symbol_ptr
;
3051 tic6x_elf_scom_symbol
.name
= ".scommon";
3052 tic6x_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
3053 tic6x_elf_scom_symbol
.section
= &tic6x_elf_scom_section
;
3054 tic6x_elf_scom_symbol_ptr
= &tic6x_elf_scom_symbol
;
3056 asym
->section
= &tic6x_elf_scom_section
;
3057 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
3063 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3064 const char *name ATTRIBUTE_UNUSED
,
3065 Elf_Internal_Sym
*sym
,
3066 asection
*input_sec
,
3067 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
)
3069 /* If we see a common symbol, which implies a relocatable link, then
3070 if a symbol was small common in an input file, mark it as small
3071 common in the output file. */
3072 if (sym
->st_shndx
== SHN_COMMON
&& strcmp (input_sec
->name
, ".scommon") == 0)
3073 sym
->st_shndx
= SHN_TIC6X_SCOMMON
;
3079 elf32_tic6x_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
3083 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
3085 *retval
= SHN_TIC6X_SCOMMON
;
3092 /* Allocate space in .plt, .got and associated reloc sections for
3096 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3098 struct bfd_link_info
*info
;
3099 struct elf32_tic6x_link_hash_table
*htab
;
3100 struct elf32_tic6x_link_hash_entry
*eh
;
3101 struct elf_dyn_relocs
*p
;
3103 if (h
->root
.type
== bfd_link_hash_indirect
)
3106 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3107 info
= (struct bfd_link_info
*) inf
;
3108 htab
= elf32_tic6x_hash_table (info
);
3110 if (htab
->elf
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
3112 /* Make sure this symbol is output as a dynamic symbol.
3113 Undefined weak syms won't yet be marked as dynamic. */
3114 if (h
->dynindx
== -1 && !h
->forced_local
)
3116 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3120 if (bfd_link_pic (info
)
3121 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
3123 asection
*s
= htab
->elf
.splt
;
3125 /* If this is the first .plt entry, make room for the special
3128 s
->size
+= PLT_ENTRY_SIZE
;
3130 h
->plt
.offset
= s
->size
;
3132 /* If this symbol is not defined in a regular file, and we are
3133 not generating a shared library, then set the symbol to this
3134 location in the .plt. This is required to make function
3135 pointers compare as equal between the normal executable and
3136 the shared library. */
3137 if (! bfd_link_pic (info
) && !h
->def_regular
)
3139 h
->root
.u
.def
.section
= s
;
3140 h
->root
.u
.def
.value
= h
->plt
.offset
;
3143 /* Make room for this entry. */
3144 s
->size
+= PLT_ENTRY_SIZE
;
3145 /* We also need to make an entry in the .got.plt section, which
3146 will be placed in the .got section by the linker script. */
3147 htab
->elf
.sgotplt
->size
+= 4;
3148 /* We also need to make an entry in the .rel.plt section. */
3149 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
3153 h
->plt
.offset
= (bfd_vma
) -1;
3159 h
->plt
.offset
= (bfd_vma
) -1;
3163 if (h
->got
.refcount
> 0)
3167 /* Make sure this symbol is output as a dynamic symbol.
3168 Undefined weak syms won't yet be marked as dynamic. */
3169 if (h
->dynindx
== -1
3170 && !h
->forced_local
)
3172 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3177 h
->got
.offset
= s
->size
;
3180 if (!(ELF_ST_VISIBILITY (h
->other
)
3181 && h
->root
.type
== bfd_link_hash_undefweak
))
3182 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3185 h
->got
.offset
= (bfd_vma
) -1;
3187 if (eh
->dyn_relocs
== NULL
)
3190 /* Discard relocs on undefined weak syms with non-default
3192 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (htab
->obfd
))
3194 /* We use the pc_count field to hold the number of
3195 R_C6000_DSBT_INDEX relocs. */
3196 if (htab
->params
.dsbt_index
!= 0)
3198 struct elf_dyn_relocs
**pp
;
3200 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
3202 p
->count
-= p
->pc_count
;
3211 if (eh
->dyn_relocs
!= NULL
3212 && h
->root
.type
== bfd_link_hash_undefweak
)
3214 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3215 eh
->dyn_relocs
= NULL
;
3217 /* Make sure undefined weak symbols are output as a dynamic
3219 else if (h
->dynindx
== -1
3220 && !h
->forced_local
)
3222 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3228 /* Finally, allocate space. */
3229 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3233 sreloc
= elf_section_data (p
->sec
)->sreloc
;
3235 BFD_ASSERT (sreloc
!= NULL
);
3236 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3242 /* Find any dynamic relocs that apply to read-only sections. */
3245 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3247 struct elf32_tic6x_link_hash_entry
*eh
;
3248 struct elf_dyn_relocs
*p
;
3250 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3251 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3253 asection
*s
= p
->sec
->output_section
;
3255 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
3257 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
3259 info
->flags
|= DF_TEXTREL
;
3261 /* Not an error, just cut short the traversal. */
3268 /* Set the sizes of the dynamic sections. */
3271 elf32_tic6x_size_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3273 struct elf32_tic6x_link_hash_table
*htab
;
3279 htab
= elf32_tic6x_hash_table (info
);
3280 dynobj
= htab
->elf
.dynobj
;
3284 if (htab
->elf
.dynamic_sections_created
)
3286 /* Set the contents of the .interp section to the interpreter. */
3287 if (bfd_link_executable (info
) && !info
->nointerp
)
3289 s
= bfd_get_linker_section (dynobj
, ".interp");
3292 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3293 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3297 /* Set up .got offsets for local syms, and space for local dynamic
3299 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3301 bfd_signed_vma
*local_got
;
3302 bfd_signed_vma
*end_local_got
;
3303 bfd_size_type locsymcount
;
3304 Elf_Internal_Shdr
*symtab_hdr
;
3307 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3309 struct elf_dyn_relocs
*p
;
3311 for (p
= ((struct elf_dyn_relocs
*)
3312 elf_section_data (s
)->local_dynrel
);
3316 if (!bfd_is_abs_section (p
->sec
)
3317 && bfd_is_abs_section (p
->sec
->output_section
))
3319 /* Input section has been discarded, either because
3320 it is a copy of a linkonce section or due to
3321 linker script /DISCARD/, so we'll be discarding
3324 else if (p
->count
!= 0)
3326 srel
= elf_section_data (p
->sec
)->sreloc
;
3327 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3328 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3329 info
->flags
|= DF_TEXTREL
;
3334 local_got
= elf_local_got_refcounts (ibfd
);
3338 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3339 locsymcount
= symtab_hdr
->sh_info
;
3340 end_local_got
= local_got
+ locsymcount
;
3342 srel
= htab
->elf
.srelgot
;
3343 for (; local_got
< end_local_got
; ++local_got
)
3347 *local_got
= s
->size
;
3350 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
3352 srel
->size
+= sizeof (Elf32_External_Rela
);
3356 *local_got
= (bfd_vma
) -1;
3360 /* Allocate global sym .plt and .got entries, and space for global
3361 sym dynamic relocs. */
3362 elf_link_hash_traverse (&htab
->elf
, elf32_tic6x_allocate_dynrelocs
, info
);
3364 /* We now have determined the sizes of the various dynamic sections.
3365 Allocate memory for them. */
3367 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3369 bfd_boolean strip_section
= TRUE
;
3371 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3374 if (s
== htab
->dsbt
)
3375 s
->size
= 4 * htab
->params
.dsbt_size
;
3376 else if (s
== htab
->elf
.splt
3377 || s
== htab
->elf
.sgot
3378 || s
== htab
->elf
.sgotplt
3379 || s
== htab
->elf
.sdynbss
)
3381 /* Strip this section if we don't need it; see the
3383 /* We'd like to strip these sections if they aren't needed, but if
3384 we've exported dynamic symbols from them we must leave them.
3385 It's too late to tell BFD to get rid of the symbols. */
3387 if (htab
->elf
.hplt
!= NULL
)
3388 strip_section
= FALSE
;
3390 /* Round up the size of the PLT section to a multiple of 32. */
3391 if (s
== htab
->elf
.splt
&& s
->size
> 0)
3392 s
->size
= (s
->size
+ 31) & ~(bfd_vma
)31;
3394 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
3397 && s
!= htab
->elf
.srelplt
)
3400 /* We use the reloc_count field as a counter if we need
3401 to copy relocs into the output file. */
3406 /* It's not one of our sections, so don't allocate space. */
3412 /* If we don't need this section, strip it from the
3413 output file. This is mostly to handle .rel.bss and
3414 .rel.plt. We must create both sections in
3415 create_dynamic_sections, because they must be created
3416 before the linker maps input sections to output
3417 sections. The linker does that before
3418 adjust_dynamic_symbol is called, and it is that
3419 function which decides whether anything needs to go
3420 into these sections. */
3422 s
->flags
|= SEC_EXCLUDE
;
3426 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3429 /* Allocate memory for the section contents. We use bfd_zalloc
3430 here in case unused entries are not reclaimed before the
3431 section's contents are written out. This should not happen,
3432 but this way if it does, we get a R_C6000_NONE reloc instead
3434 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
3435 if (s
->contents
== NULL
)
3439 if (htab
->elf
.dynamic_sections_created
)
3441 /* Add some entries to the .dynamic section. We fill in the
3442 values later, in elf32_tic6x_finish_dynamic_sections, but we
3443 must add the entries now so that we get the correct size for
3444 the .dynamic section. The DT_DEBUG entry is filled in by the
3445 dynamic linker and used by the debugger. */
3446 #define add_dynamic_entry(TAG, VAL) \
3447 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3449 if (bfd_link_executable (info
))
3451 if (!add_dynamic_entry (DT_DEBUG
, 0))
3455 if (!add_dynamic_entry (DT_C6000_DSBT_BASE
, 0)
3456 || !add_dynamic_entry (DT_C6000_DSBT_SIZE
, htab
->params
.dsbt_size
)
3457 || !add_dynamic_entry (DT_C6000_DSBT_INDEX
,
3458 htab
->params
.dsbt_index
))
3461 if (htab
->elf
.splt
->size
!= 0)
3463 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3464 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3465 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3466 || !add_dynamic_entry (DT_JMPREL
, 0))
3472 if (!add_dynamic_entry (DT_RELA
, 0)
3473 || !add_dynamic_entry (DT_RELASZ
, 0)
3474 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3477 /* If any dynamic relocs apply to a read-only section,
3478 then we need a DT_TEXTREL entry. */
3479 if ((info
->flags
& DF_TEXTREL
) == 0)
3480 elf_link_hash_traverse (&htab
->elf
,
3481 elf32_tic6x_readonly_dynrelocs
, info
);
3483 if ((info
->flags
& DF_TEXTREL
) != 0)
3485 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3490 #undef add_dynamic_entry
3495 /* This function is called after all the input files have been read,
3496 and the input sections have been assigned to output sections. */
3499 elf32_tic6x_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3501 if (elf32_tic6x_using_dsbt (output_bfd
) && !bfd_link_relocatable (info
)
3502 && !bfd_elf_stack_segment_size (output_bfd
, info
,
3503 "__stacksize", DEFAULT_STACK_SIZE
))
3510 elf32_tic6x_finish_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3511 struct bfd_link_info
*info
)
3513 struct elf32_tic6x_link_hash_table
*htab
;
3517 htab
= elf32_tic6x_hash_table (info
);
3518 dynobj
= htab
->elf
.dynobj
;
3519 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3521 if (elf_hash_table (info
)->dynamic_sections_created
)
3523 Elf32_External_Dyn
* dyncon
;
3524 Elf32_External_Dyn
* dynconend
;
3526 BFD_ASSERT (sdyn
!= NULL
);
3528 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3529 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3531 for (; dyncon
< dynconend
; dyncon
++)
3533 Elf_Internal_Dyn dyn
;
3536 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3543 case DT_C6000_DSBT_BASE
:
3545 dyn
.d_un
.d_ptr
= (s
->output_section
->vma
+ s
->output_offset
);
3549 s
= htab
->elf
.sgotplt
;
3550 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3554 s
= htab
->elf
.srelplt
;
3555 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3559 s
= htab
->elf
.srelplt
;
3560 dyn
.d_un
.d_val
= s
->size
;
3563 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3566 /* Fill in the first entry in the procedure linkage table. */
3567 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3569 bfd_vma got_offs
= (htab
->elf
.sgotplt
->output_section
->vma
3570 + htab
->elf
.sgotplt
->output_offset
3571 - htab
->dsbt
->output_section
->vma
3572 - htab
->dsbt
->output_offset
) / 4;
3574 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3575 bfd_put_32 (output_bfd
, got_offs
<< 8 | 0x0100006e,
3576 htab
->elf
.splt
->contents
);
3577 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3578 bfd_put_32 (output_bfd
, (got_offs
+ 1) << 8 | 0x0080006e,
3579 htab
->elf
.splt
->contents
+ 4);
3581 bfd_put_32 (output_bfd
, 0x00004000,
3582 htab
->elf
.splt
->contents
+ 8);
3584 bfd_put_32 (output_bfd
, 0x00080362,
3585 htab
->elf
.splt
->contents
+ 12);
3587 bfd_put_32 (output_bfd
, 0x00008000,
3588 htab
->elf
.splt
->contents
+ 16);
3590 elf_section_data (htab
->elf
.splt
->output_section
)
3591 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
3598 /* Return address for Ith PLT stub in section PLT, for relocation REL
3599 or (bfd_vma) -1 if it should not be included. */
3602 elf32_tic6x_plt_sym_val (bfd_vma i
, const asection
*plt
,
3603 const arelent
*rel ATTRIBUTE_UNUSED
)
3605 return plt
->vma
+ (i
+ 1) * PLT_ENTRY_SIZE
;
3609 elf32_tic6x_obj_attrs_arg_type (int tag
)
3611 if (tag
== Tag_ABI_compatibility
)
3612 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_STR_VAL
;
3614 return ATTR_TYPE_FLAG_STR_VAL
;
3616 return ATTR_TYPE_FLAG_INT_VAL
;
3620 elf32_tic6x_obj_attrs_order (int num
)
3622 if (num
== LEAST_KNOWN_OBJ_ATTRIBUTE
)
3623 return Tag_ABI_conformance
;
3624 if ((num
- 1) < Tag_ABI_conformance
)
3630 elf32_tic6x_obj_attrs_handle_unknown (bfd
*abfd
, int tag
)
3632 if ((tag
& 127) < 64)
3635 /* xgettext:c-format */
3636 (_("%B: error: unknown mandatory EABI object attribute %d"),
3638 bfd_set_error (bfd_error_bad_value
);
3644 /* xgettext:c-format */
3645 (_("%B: warning: unknown EABI object attribute %d"),
3651 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3652 and return the merged value. At present, all merges succeed, so no
3653 return value for errors is defined. */
3656 elf32_tic6x_merge_arch_attributes (int arch1
, int arch2
)
3658 int min_arch
, max_arch
;
3660 min_arch
= (arch1
< arch2
? arch1
: arch2
);
3661 max_arch
= (arch1
> arch2
? arch1
: arch2
);
3663 /* In most cases, the numerically greatest value is the correct
3664 merged value, but merging C64 and C67 results in C674X. */
3665 if ((min_arch
== C6XABI_Tag_ISA_C67X
3666 || min_arch
== C6XABI_Tag_ISA_C67XP
)
3667 && (max_arch
== C6XABI_Tag_ISA_C64X
3668 || max_arch
== C6XABI_Tag_ISA_C64XP
))
3669 return C6XABI_Tag_ISA_C674X
;
3674 /* Convert a Tag_ABI_array_object_alignment or
3675 Tag_ABI_array_object_align_expected tag value TAG to a
3676 corresponding alignment value; return the alignment, or -1 for an
3677 unknown tag value. */
3680 elf32_tic6x_tag_to_array_alignment (int tag
)
3698 /* Convert a Tag_ABI_array_object_alignment or
3699 Tag_ABI_array_object_align_expected alignment ALIGN to a
3700 corresponding tag value; return the tag value. */
3703 elf32_tic6x_array_alignment_to_tag (int align
)
3721 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3722 succeeded, FALSE otherwise. */
3725 elf32_tic6x_merge_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
3727 bfd
*obfd
= info
->output_bfd
;
3728 bfd_boolean result
= TRUE
;
3729 obj_attribute
*in_attr
;
3730 obj_attribute
*out_attr
;
3732 int array_align_in
, array_align_out
, array_expect_in
, array_expect_out
;
3734 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3736 /* This is the first object. Copy the attributes. */
3737 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3739 out_attr
= elf_known_obj_attributes_proc (obfd
);
3741 /* Use the Tag_null value to indicate the attributes have been
3748 in_attr
= elf_known_obj_attributes_proc (ibfd
);
3749 out_attr
= elf_known_obj_attributes_proc (obfd
);
3751 /* No specification yet for handling of unknown attributes, so just
3752 ignore them and handle known ones. */
3754 if (out_attr
[Tag_ABI_stack_align_preserved
].i
3755 < in_attr
[Tag_ABI_stack_align_needed
].i
)
3758 /* xgettext:c-format */
3759 (_("error: %B requires more stack alignment than %B preserves"),
3763 if (in_attr
[Tag_ABI_stack_align_preserved
].i
3764 < out_attr
[Tag_ABI_stack_align_needed
].i
)
3767 /* xgettext:c-format */
3768 (_("error: %B requires more stack alignment than %B preserves"),
3773 array_align_in
= elf32_tic6x_tag_to_array_alignment
3774 (in_attr
[Tag_ABI_array_object_alignment
].i
);
3775 if (array_align_in
== -1)
3778 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3782 array_align_out
= elf32_tic6x_tag_to_array_alignment
3783 (out_attr
[Tag_ABI_array_object_alignment
].i
);
3784 if (array_align_out
== -1)
3787 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3791 array_expect_in
= elf32_tic6x_tag_to_array_alignment
3792 (in_attr
[Tag_ABI_array_object_align_expected
].i
);
3793 if (array_expect_in
== -1)
3796 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3800 array_expect_out
= elf32_tic6x_tag_to_array_alignment
3801 (out_attr
[Tag_ABI_array_object_align_expected
].i
);
3802 if (array_expect_out
== -1)
3805 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3810 if (array_align_out
< array_expect_in
)
3813 /* xgettext:c-format */
3814 (_("error: %B requires more array alignment than %B preserves"),
3818 if (array_align_in
< array_expect_out
)
3821 /* xgettext:c-format */
3822 (_("error: %B requires more array alignment than %B preserves"),
3827 for (i
= LEAST_KNOWN_OBJ_ATTRIBUTE
; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
3832 out_attr
[i
].i
= elf32_tic6x_merge_arch_attributes (in_attr
[i
].i
,
3836 case Tag_ABI_wchar_t
:
3837 if (out_attr
[i
].i
== 0)
3838 out_attr
[i
].i
= in_attr
[i
].i
;
3839 if (out_attr
[i
].i
!= 0
3840 && in_attr
[i
].i
!= 0
3841 && out_attr
[i
].i
!= in_attr
[i
].i
)
3844 /* xgettext:c-format */
3845 (_("warning: %B and %B differ in wchar_t size"), obfd
, ibfd
);
3849 case Tag_ABI_stack_align_needed
:
3850 if (out_attr
[i
].i
< in_attr
[i
].i
)
3851 out_attr
[i
].i
= in_attr
[i
].i
;
3854 case Tag_ABI_stack_align_preserved
:
3855 if (out_attr
[i
].i
> in_attr
[i
].i
)
3856 out_attr
[i
].i
= in_attr
[i
].i
;
3860 if (out_attr
[i
].i
!= in_attr
[i
].i
)
3863 /* xgettext:c-format */
3864 (_("warning: %B and %B differ in whether code is "
3865 "compiled for DSBT"),
3872 if (out_attr
[i
].i
> in_attr
[i
].i
)
3873 out_attr
[i
].i
= in_attr
[i
].i
;
3876 case Tag_ABI_array_object_alignment
:
3877 if (array_align_out
!= -1
3878 && array_align_in
!= -1
3879 && array_align_out
> array_align_in
)
3881 = elf32_tic6x_array_alignment_to_tag (array_align_in
);
3884 case Tag_ABI_array_object_align_expected
:
3885 if (array_expect_out
!= -1
3886 && array_expect_in
!= -1
3887 && array_expect_out
< array_expect_in
)
3889 = elf32_tic6x_array_alignment_to_tag (array_expect_in
);
3892 case Tag_ABI_conformance
:
3893 /* Merging for this attribute is not specified. As on ARM,
3894 treat a missing attribute as no claim to conform and only
3895 merge identical values. */
3896 if (out_attr
[i
].s
== NULL
3897 || in_attr
[i
].s
== NULL
3898 || strcmp (out_attr
[i
].s
,
3900 out_attr
[i
].s
= NULL
;
3903 case Tag_ABI_compatibility
:
3904 /* Merged in _bfd_elf_merge_object_attributes. */
3909 = result
&& _bfd_elf_merge_unknown_attribute_low (ibfd
, obfd
, i
);
3913 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
3914 out_attr
[i
].type
= in_attr
[i
].type
;
3917 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
3918 if (!_bfd_elf_merge_object_attributes (ibfd
, info
))
3921 result
&= _bfd_elf_merge_unknown_attribute_list (ibfd
, obfd
);
3927 elf32_tic6x_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3929 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
3932 if (! is_tic6x_elf (ibfd
) || ! is_tic6x_elf (info
->output_bfd
))
3935 if (!elf32_tic6x_merge_attributes (ibfd
, info
))
3941 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
3942 adds the edit to the start of the list. (The list must be built in order of
3943 ascending TINDEX: the function's callers are primarily responsible for
3944 maintaining that condition). */
3947 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit
**head
,
3948 tic6x_unwind_table_edit
**tail
,
3949 tic6x_unwind_edit_type type
,
3950 asection
*linked_section
,
3951 unsigned int tindex
)
3953 tic6x_unwind_table_edit
*new_edit
= (tic6x_unwind_table_edit
*)
3954 xmalloc (sizeof (tic6x_unwind_table_edit
));
3956 new_edit
->type
= type
;
3957 new_edit
->linked_section
= linked_section
;
3958 new_edit
->index
= tindex
;
3962 new_edit
->next
= NULL
;
3965 (*tail
)->next
= new_edit
;
3974 new_edit
->next
= *head
;
3983 static _tic6x_elf_section_data
*
3984 get_tic6x_elf_section_data (asection
* sec
)
3986 if (sec
&& sec
->owner
&& is_tic6x_elf (sec
->owner
))
3987 return elf32_tic6x_section_data (sec
);
3993 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
3995 elf32_tic6x_adjust_exidx_size (asection
*exidx_sec
, int adjust
)
3999 if (!exidx_sec
->rawsize
)
4000 exidx_sec
->rawsize
= exidx_sec
->size
;
4002 bfd_set_section_size (exidx_sec
->owner
, exidx_sec
, exidx_sec
->size
+ adjust
);
4003 out_sec
= exidx_sec
->output_section
;
4004 /* Adjust size of output section. */
4005 bfd_set_section_size (out_sec
->owner
, out_sec
, out_sec
->size
+adjust
);
4008 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
4010 elf32_tic6x_insert_cantunwind_after (asection
*text_sec
, asection
*exidx_sec
)
4012 struct _tic6x_elf_section_data
*exidx_data
;
4014 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4015 elf32_tic6x_add_unwind_table_edit (
4016 &exidx_data
->u
.exidx
.unwind_edit_list
,
4017 &exidx_data
->u
.exidx
.unwind_edit_tail
,
4018 INSERT_EXIDX_CANTUNWIND_AT_END
, text_sec
, UINT_MAX
);
4020 elf32_tic6x_adjust_exidx_size (exidx_sec
, 8);
4023 /* Scan .cx6abi.exidx tables, and create a list describing edits which
4024 should be made to those tables, such that:
4026 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
4027 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
4028 codes which have been inlined into the index).
4030 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
4032 The edits are applied when the tables are written
4033 (in elf32_tic6x_write_section).
4037 elf32_tic6x_fix_exidx_coverage (asection
**text_section_order
,
4038 unsigned int num_text_sections
,
4039 struct bfd_link_info
*info
,
4040 bfd_boolean merge_exidx_entries
)
4043 unsigned int last_second_word
= 0, i
;
4044 asection
*last_exidx_sec
= NULL
;
4045 asection
*last_text_sec
= NULL
;
4046 int last_unwind_type
= -1;
4048 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
4050 for (inp
= info
->input_bfds
; inp
!= NULL
; inp
= inp
->link
.next
)
4054 for (sec
= inp
->sections
; sec
!= NULL
; sec
= sec
->next
)
4056 struct bfd_elf_section_data
*elf_sec
= elf_section_data (sec
);
4057 Elf_Internal_Shdr
*hdr
= &elf_sec
->this_hdr
;
4059 if (!hdr
|| hdr
->sh_type
!= SHT_C6000_UNWIND
)
4062 if (elf_sec
->linked_to
)
4064 Elf_Internal_Shdr
*linked_hdr
4065 = &elf_section_data (elf_sec
->linked_to
)->this_hdr
;
4066 struct _tic6x_elf_section_data
*linked_sec_tic6x_data
4067 = get_tic6x_elf_section_data (linked_hdr
->bfd_section
);
4069 if (linked_sec_tic6x_data
== NULL
)
4072 /* Link this .c6xabi.exidx section back from the
4073 text section it describes. */
4074 linked_sec_tic6x_data
->u
.text
.tic6x_exidx_sec
= sec
;
4079 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4080 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4081 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4083 for (i
= 0; i
< num_text_sections
; i
++)
4085 asection
*sec
= text_section_order
[i
];
4086 asection
*exidx_sec
;
4087 struct _tic6x_elf_section_data
*tic6x_data
4088 = get_tic6x_elf_section_data (sec
);
4089 struct _tic6x_elf_section_data
*exidx_data
;
4090 bfd_byte
*contents
= NULL
;
4091 int deleted_exidx_bytes
= 0;
4093 tic6x_unwind_table_edit
*unwind_edit_head
= NULL
;
4094 tic6x_unwind_table_edit
*unwind_edit_tail
= NULL
;
4095 Elf_Internal_Shdr
*hdr
;
4098 if (tic6x_data
== NULL
)
4101 exidx_sec
= tic6x_data
->u
.text
.tic6x_exidx_sec
;
4102 if (exidx_sec
== NULL
)
4104 /* Section has no unwind data. */
4105 if (last_unwind_type
== 0 || !last_exidx_sec
)
4108 /* Ignore zero sized sections. */
4112 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4113 last_unwind_type
= 0;
4117 /* Skip /DISCARD/ sections. */
4118 if (bfd_is_abs_section (exidx_sec
->output_section
))
4121 hdr
= &elf_section_data (exidx_sec
)->this_hdr
;
4122 if (hdr
->sh_type
!= SHT_C6000_UNWIND
)
4125 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4126 if (exidx_data
== NULL
)
4129 ibfd
= exidx_sec
->owner
;
4131 if (hdr
->contents
!= NULL
)
4132 contents
= hdr
->contents
;
4133 else if (! bfd_malloc_and_get_section (ibfd
, exidx_sec
, &contents
))
4137 for (j
= 0; j
< hdr
->sh_size
; j
+= 8)
4139 unsigned int second_word
= bfd_get_32 (ibfd
, contents
+ j
+ 4);
4143 /* An EXIDX_CANTUNWIND entry. */
4144 if (second_word
== 1)
4146 if (last_unwind_type
== 0)
4150 /* Inlined unwinding data. Merge if equal to previous. */
4151 else if ((second_word
& 0x80000000) != 0)
4153 if (merge_exidx_entries
4154 && last_second_word
== second_word
4155 && last_unwind_type
== 1)
4158 last_second_word
= second_word
;
4160 /* Normal table entry. In theory we could merge these too,
4161 but duplicate entries are likely to be much less common. */
4167 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head
,
4168 &unwind_edit_tail
, DELETE_EXIDX_ENTRY
, NULL
, j
/ 8);
4170 deleted_exidx_bytes
+= 8;
4173 last_unwind_type
= unwind_type
;
4176 /* Free contents if we allocated it ourselves. */
4177 if (contents
!= hdr
->contents
)
4180 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4181 exidx_data
->u
.exidx
.unwind_edit_list
= unwind_edit_head
;
4182 exidx_data
->u
.exidx
.unwind_edit_tail
= unwind_edit_tail
;
4184 if (deleted_exidx_bytes
> 0)
4185 elf32_tic6x_adjust_exidx_size (exidx_sec
, -deleted_exidx_bytes
);
4187 last_exidx_sec
= exidx_sec
;
4188 last_text_sec
= sec
;
4191 /* Add terminating CANTUNWIND entry. */
4192 if (last_exidx_sec
&& last_unwind_type
!= 0)
4193 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4198 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4200 static unsigned long
4201 elf32_tic6x_add_low31 (unsigned long val
, bfd_vma addend
)
4203 return (val
& ~0x7ffffffful
) | ((val
+ addend
) & 0x7ffffffful
);
4206 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4207 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4211 elf32_tic6x_copy_exidx_entry (bfd
*output_bfd
, bfd_byte
*to
, bfd_byte
*from
,
4214 unsigned long first_word
= bfd_get_32 (output_bfd
, from
);
4215 unsigned long second_word
= bfd_get_32 (output_bfd
, from
+ 4);
4218 /* High bit of first word is supposed to be zero. */
4219 if ((first_word
& 0x80000000ul
) == 0)
4220 first_word
= elf32_tic6x_add_low31 (first_word
, offset
);
4222 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4223 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4224 if ((second_word
!= 0x1) && ((second_word
& 0x80000000ul
) == 0))
4225 second_word
= elf32_tic6x_add_low31 (second_word
, offset
);
4227 bfd_put_32 (output_bfd
, first_word
, to
);
4228 bfd_put_32 (output_bfd
, second_word
, to
+ 4);
4231 /* Do the actual mangling of exception index tables. */
4234 elf32_tic6x_write_section (bfd
*output_bfd
,
4235 struct bfd_link_info
*link_info
,
4239 _tic6x_elf_section_data
*tic6x_data
;
4240 struct elf32_tic6x_link_hash_table
*globals
4241 = elf32_tic6x_hash_table (link_info
);
4242 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
4244 if (globals
== NULL
)
4247 /* If this section has not been allocated an _tic6x_elf_section_data
4248 structure then we cannot record anything. */
4249 tic6x_data
= get_tic6x_elf_section_data (sec
);
4250 if (tic6x_data
== NULL
)
4253 if (tic6x_data
->elf
.this_hdr
.sh_type
!= SHT_C6000_UNWIND
)
4256 tic6x_unwind_table_edit
*edit_node
4257 = tic6x_data
->u
.exidx
.unwind_edit_list
;
4258 /* Now, sec->size is the size of the section we will write. The original
4259 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4260 markers) was sec->rawsize. (This isn't the case if we perform no
4261 edits, then rawsize will be zero and we should use size). */
4262 bfd_byte
*edited_contents
= (bfd_byte
*) bfd_malloc (sec
->size
);
4263 unsigned int input_size
= sec
->rawsize
? sec
->rawsize
: sec
->size
;
4264 unsigned int in_index
, out_index
;
4265 bfd_vma add_to_offsets
= 0;
4267 for (in_index
= 0, out_index
= 0; in_index
* 8 < input_size
|| edit_node
;)
4271 unsigned int edit_index
= edit_node
->index
;
4273 if (in_index
< edit_index
&& in_index
* 8 < input_size
)
4275 elf32_tic6x_copy_exidx_entry (output_bfd
,
4276 edited_contents
+ out_index
* 8,
4277 contents
+ in_index
* 8, add_to_offsets
);
4281 else if (in_index
== edit_index
4282 || (in_index
* 8 >= input_size
4283 && edit_index
== UINT_MAX
))
4285 switch (edit_node
->type
)
4287 case DELETE_EXIDX_ENTRY
:
4289 add_to_offsets
+= 8;
4292 case INSERT_EXIDX_CANTUNWIND_AT_END
:
4294 asection
*text_sec
= edit_node
->linked_section
;
4295 bfd_vma text_offset
= text_sec
->output_section
->vma
4296 + text_sec
->output_offset
4298 bfd_vma exidx_offset
= offset
+ out_index
* 8;
4299 unsigned long prel31_offset
;
4301 /* Note: this is meant to be equivalent to an
4302 R_C6000_PREL31 relocation. These synthetic
4303 EXIDX_CANTUNWIND markers are not relocated by the
4304 usual BFD method. */
4305 prel31_offset
= ((text_offset
- exidx_offset
) >> 1)
4308 /* First address we can't unwind. */
4309 bfd_put_32 (output_bfd
, prel31_offset
,
4310 &edited_contents
[out_index
* 8]);
4312 /* Code for EXIDX_CANTUNWIND. */
4313 bfd_put_32 (output_bfd
, 0x1,
4314 &edited_contents
[out_index
* 8 + 4]);
4317 add_to_offsets
-= 8;
4322 edit_node
= edit_node
->next
;
4327 /* No more edits, copy remaining entries verbatim. */
4328 elf32_tic6x_copy_exidx_entry (output_bfd
,
4329 edited_contents
+ out_index
* 8,
4330 contents
+ in_index
* 8, add_to_offsets
);
4336 if (!(sec
->flags
& SEC_EXCLUDE
) && !(sec
->flags
& SEC_NEVER_LOAD
))
4337 bfd_set_section_contents (output_bfd
, sec
->output_section
,
4339 (file_ptr
) sec
->output_offset
, sec
->size
);
4344 #define TARGET_LITTLE_SYM tic6x_elf32_le_vec
4345 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4346 #define TARGET_BIG_SYM tic6x_elf32_be_vec
4347 #define TARGET_BIG_NAME "elf32-tic6x-be"
4348 #define ELF_ARCH bfd_arch_tic6x
4349 #define ELF_TARGET_ID TIC6X_ELF_DATA
4350 #define ELF_MACHINE_CODE EM_TI_C6000
4351 #define ELF_MAXPAGESIZE 0x1000
4352 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4353 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4354 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4355 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4356 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4357 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4358 #define elf_backend_stack_align 8
4359 #define elf_backend_can_gc_sections 1
4360 #define elf_backend_default_use_rela_p 1
4361 #define elf_backend_may_use_rel_p 1
4362 #define elf_backend_may_use_rela_p 1
4363 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4364 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4365 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4366 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4367 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4368 #define elf_backend_obj_attrs_vendor "c6xabi"
4369 #define elf_backend_can_refcount 1
4370 #define elf_backend_want_got_plt 1
4371 #define elf_backend_want_dynbss 1
4372 #define elf_backend_plt_readonly 1
4373 #define elf_backend_rela_normal 1
4374 #define elf_backend_got_header_size 8
4375 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4376 #define elf_backend_gc_sweep_hook elf32_tic6x_gc_sweep_hook
4377 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4378 #define elf_backend_create_dynamic_sections \
4379 elf32_tic6x_create_dynamic_sections
4380 #define elf_backend_adjust_dynamic_symbol \
4381 elf32_tic6x_adjust_dynamic_symbol
4382 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4383 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4384 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4385 #define elf_backend_link_output_symbol_hook \
4386 elf32_tic6x_link_output_symbol_hook
4387 #define elf_backend_section_from_bfd_section \
4388 elf32_tic6x_section_from_bfd_section
4389 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4390 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4391 #define elf_backend_finish_dynamic_symbol \
4392 elf32_tic6x_finish_dynamic_symbol
4393 #define elf_backend_always_size_sections \
4394 elf32_tic6x_always_size_sections
4395 #define elf_backend_size_dynamic_sections \
4396 elf32_tic6x_size_dynamic_sections
4397 #define elf_backend_finish_dynamic_sections \
4398 elf32_tic6x_finish_dynamic_sections
4399 #define bfd_elf32_bfd_final_link \
4400 elf32_tic6x_final_link
4401 #define elf_backend_write_section elf32_tic6x_write_section
4402 #define elf_info_to_howto elf32_tic6x_info_to_howto
4403 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4405 #undef elf_backend_omit_section_dynsym
4406 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4407 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4409 #include "elf32-target.h"
4412 #define elf32_bed elf32_tic6x_linux_bed
4414 #undef TARGET_LITTLE_SYM
4415 #define TARGET_LITTLE_SYM tic6x_elf32_linux_le_vec
4416 #undef TARGET_LITTLE_NAME
4417 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4418 #undef TARGET_BIG_SYM
4419 #define TARGET_BIG_SYM tic6x_elf32_linux_be_vec
4420 #undef TARGET_BIG_NAME
4421 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4423 #define ELF_OSABI ELFOSABI_C6000_LINUX
4425 #include "elf32-target.h"
4428 #define elf32_bed elf32_tic6x_elf_bed
4430 #undef TARGET_LITTLE_SYM
4431 #define TARGET_LITTLE_SYM tic6x_elf32_c6000_le_vec
4432 #undef TARGET_LITTLE_NAME
4433 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4434 #undef TARGET_BIG_SYM
4435 #define TARGET_BIG_SYM tic6x_elf32_c6000_be_vec
4436 #undef TARGET_BIG_NAME
4437 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4439 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4441 #include "elf32-target.h"