1 /* 32-bit ELF support for TI C6X
2 Copyright (C) 2010-2017 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
;
1865 /* This symbol needs a copy reloc. Set it up. */
1867 if (h
->dynindx
== -1
1868 || (h
->root
.type
!= bfd_link_hash_defined
1869 && h
->root
.type
!= bfd_link_hash_defweak
)
1870 || htab
->elf
.srelbss
== NULL
1871 || htab
->elf
.sreldynrelro
== NULL
)
1874 rel
.r_offset
= (h
->root
.u
.def
.value
1875 + h
->root
.u
.def
.section
->output_section
->vma
1876 + h
->root
.u
.def
.section
->output_offset
);
1877 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_COPY
);
1879 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
1880 s
= htab
->elf
.sreldynrelro
;
1882 s
= htab
->elf
.srelbss
;
1884 elf32_tic6x_install_rela (output_bfd
, s
, &rel
);
1887 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1888 if (h
== elf_hash_table (info
)->hdynamic
1889 || h
== elf_hash_table (info
)->hgot
)
1890 sym
->st_shndx
= SHN_ABS
;
1895 /* Unwinding tables are not referenced directly. This pass marks them as
1896 required if the corresponding code section is marked. */
1899 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info
*info
,
1900 elf_gc_mark_hook_fn gc_mark_hook
)
1903 Elf_Internal_Shdr
**elf_shdrp
;
1906 _bfd_elf_gc_mark_extra_sections (info
, gc_mark_hook
);
1908 /* Marking EH data may cause additional code sections to be marked,
1909 requiring multiple passes. */
1914 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
1918 if (! is_tic6x_elf (sub
))
1921 elf_shdrp
= elf_elfsections (sub
);
1922 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
1924 Elf_Internal_Shdr
*hdr
;
1926 hdr
= &elf_section_data (o
)->this_hdr
;
1927 if (hdr
->sh_type
== SHT_C6000_UNWIND
1929 && hdr
->sh_link
< elf_numsections (sub
)
1931 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
1934 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
1944 /* Return TRUE if this is an unwinding table index. */
1947 is_tic6x_elf_unwind_section_name (const char *name
)
1949 return (CONST_STRNEQ (name
, ELF_STRING_C6000_unwind
)
1950 || CONST_STRNEQ (name
, ELF_STRING_C6000_unwind_once
));
1954 /* Set the type and flags for an unwinding index table. We do this by
1955 the section name, which is a hack, but ought to work. */
1958 elf32_tic6x_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1959 Elf_Internal_Shdr
*hdr
, asection
*sec
)
1963 name
= bfd_get_section_name (abfd
, sec
);
1965 if (is_tic6x_elf_unwind_section_name (name
))
1967 hdr
->sh_type
= SHT_C6000_UNWIND
;
1968 hdr
->sh_flags
|= SHF_LINK_ORDER
;
1974 /* Adjust a symbol defined by a dynamic object and referenced by a
1975 regular object. The current definition is in some section of the
1976 dynamic object, but we're not including those sections. We have to
1977 change the definition to something the rest of the link can
1981 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1982 struct elf_link_hash_entry
*h
)
1984 struct elf32_tic6x_link_hash_table
*htab
;
1988 dynobj
= elf_hash_table (info
)->dynobj
;
1990 /* Make sure we know what is going on here. */
1991 BFD_ASSERT (dynobj
!= NULL
1994 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
1996 /* If this is a function, put it in the procedure linkage table. We
1997 will fill in the contents of the procedure linkage table later,
1998 when we know the address of the .got section. */
1999 if (h
->type
== STT_FUNC
2002 if (h
->plt
.refcount
<= 0
2003 || SYMBOL_CALLS_LOCAL (info
, h
)
2004 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2005 && h
->root
.type
== bfd_link_hash_undefweak
))
2007 /* This case can occur if we saw a PLT32 reloc in an input
2008 file, but the symbol was never referred to by a dynamic
2009 object, or if all references were garbage collected. In
2010 such a case, we don't actually need to build a procedure
2011 linkage table, and we can just do a PC32 reloc instead. */
2012 h
->plt
.offset
= (bfd_vma
) -1;
2019 /* If this is a weak symbol, and there is a real definition, the
2020 processor independent code will have arranged for us to see the
2021 real definition first, and we can just use the same value. */
2022 if (h
->is_weakalias
)
2024 struct elf_link_hash_entry
*def
= weakdef (h
);
2025 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2026 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2027 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2028 h
->non_got_ref
= def
->non_got_ref
;
2032 /* This is a reference to a symbol defined by a dynamic object which
2033 is not a function. */
2035 /* If we are creating a shared library, we must presume that the
2036 only references to the symbol are via the global offset table.
2037 For such cases we need not do anything here; the relocations will
2038 be handled correctly by relocate_section. */
2039 if (bfd_link_pic (info
))
2042 /* If there are no references to this symbol that do not use the
2043 GOT, we don't need to generate a copy reloc. */
2044 if (!h
->non_got_ref
)
2047 /* If -z nocopyreloc was given, we won't generate them either. */
2048 if (info
->nocopyreloc
)
2054 htab
= elf32_tic6x_hash_table (info
);
2058 /* We must allocate the symbol in our .dynbss section, which will
2059 become part of the .bss section of the executable. There will be
2060 an entry for this symbol in the .dynsym section. The dynamic
2061 object will contain position independent code, so all references
2062 from the dynamic object to this symbol will go through the global
2063 offset table. The dynamic linker will use the .dynsym entry to
2064 determine the address it must put in the global offset table, so
2065 both the dynamic object and the regular object will refer to the
2066 same memory location for the variable. */
2068 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2069 copy the initial value out of the dynamic object and into the
2070 runtime process image. */
2071 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
2073 s
= htab
->elf
.sdynrelro
;
2074 srel
= htab
->elf
.sreldynrelro
;
2078 s
= htab
->elf
.sdynbss
;
2079 srel
= htab
->elf
.srelbss
;
2081 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2083 srel
->size
+= sizeof (Elf32_External_Rela
);
2087 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2091 elf32_tic6x_new_section_hook (bfd
*abfd
, asection
*sec
)
2095 /* Allocate target specific section data. */
2096 if (!sec
->used_by_bfd
)
2098 _tic6x_elf_section_data
*sdata
;
2099 bfd_size_type amt
= sizeof (*sdata
);
2101 sdata
= (_tic6x_elf_section_data
*) bfd_zalloc (abfd
, amt
);
2104 sec
->used_by_bfd
= sdata
;
2107 ret
= _bfd_elf_new_section_hook (abfd
, sec
);
2108 sec
->use_rela_p
= elf32_tic6x_tdata (abfd
)->use_rela_p
;
2113 /* Return true if relocation REL against section SEC is a REL rather
2114 than RELA relocation. RELOCS is the first relocation in the
2115 section and ABFD is the bfd that contains SEC. */
2118 elf32_tic6x_rel_relocation_p (bfd
*abfd
, asection
*sec
,
2119 const Elf_Internal_Rela
*relocs
,
2120 const Elf_Internal_Rela
*rel
)
2122 Elf_Internal_Shdr
*rel_hdr
;
2123 const struct elf_backend_data
*bed
;
2125 /* To determine which flavor of relocation this is, we depend on the
2126 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2127 rel_hdr
= elf_section_data (sec
)->rel
.hdr
;
2128 if (rel_hdr
== NULL
)
2130 bed
= get_elf_backend_data (abfd
);
2131 return ((size_t) (rel
- relocs
)
2132 < NUM_SHDR_ENTRIES (rel_hdr
) * bed
->s
->int_rels_per_ext_rel
);
2135 /* We need dynamic symbols for every section, since segments can
2136 relocate independently. */
2138 elf32_tic6x_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2139 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2142 switch (elf_section_data (p
)->this_hdr
.sh_type
)
2146 /* If sh_type is yet undecided, assume it could be
2147 SHT_PROGBITS/SHT_NOBITS. */
2151 /* There shouldn't be section relative relocations
2152 against any other section. */
2159 elf32_tic6x_relocate_section (bfd
*output_bfd
,
2160 struct bfd_link_info
*info
,
2162 asection
*input_section
,
2164 Elf_Internal_Rela
*relocs
,
2165 Elf_Internal_Sym
*local_syms
,
2166 asection
**local_sections
)
2168 struct elf32_tic6x_link_hash_table
*htab
;
2169 Elf_Internal_Shdr
*symtab_hdr
;
2170 struct elf_link_hash_entry
**sym_hashes
;
2171 bfd_vma
*local_got_offsets
;
2172 Elf_Internal_Rela
*rel
;
2173 Elf_Internal_Rela
*relend
;
2174 bfd_boolean ok
= TRUE
;
2176 htab
= elf32_tic6x_hash_table (info
);
2177 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
2178 sym_hashes
= elf_sym_hashes (input_bfd
);
2179 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2181 relend
= relocs
+ input_section
->reloc_count
;
2183 for (rel
= relocs
; rel
< relend
; rel
++)
2186 unsigned long r_symndx
;
2188 reloc_howto_type
*howto
;
2189 Elf_Internal_Sym
*sym
;
2191 struct elf_link_hash_entry
*h
;
2192 bfd_vma off
, off2
, relocation
;
2193 bfd_boolean unresolved_reloc
;
2194 bfd_reloc_status_type r
;
2195 struct bfd_link_hash_entry
*sbh
;
2198 r_type
= ELF32_R_TYPE (rel
->r_info
);
2199 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2201 is_rel
= elf32_tic6x_rel_relocation_p (input_bfd
, input_section
,
2205 elf32_tic6x_info_to_howto_rel (input_bfd
, &bfd_reloc
, rel
);
2207 elf32_tic6x_info_to_howto (input_bfd
, &bfd_reloc
, rel
);
2208 howto
= bfd_reloc
.howto
;
2211 bfd_set_error (bfd_error_bad_value
);
2218 unresolved_reloc
= FALSE
;
2220 if (r_symndx
< symtab_hdr
->sh_info
)
2222 sym
= local_syms
+ r_symndx
;
2223 sec
= local_sections
[r_symndx
];
2224 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2228 bfd_boolean warned
, ignored
;
2230 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2231 r_symndx
, symtab_hdr
, sym_hashes
,
2233 unresolved_reloc
, warned
, ignored
);
2236 if (sec
!= NULL
&& discarded_section (sec
))
2237 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2238 rel
, 1, relend
, howto
, 0, contents
);
2240 if (bfd_link_relocatable (info
))
2244 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2247 relocation
= sec
->output_offset
+ sym
->st_value
;
2248 r
= _bfd_relocate_contents (howto
, input_bfd
, relocation
,
2249 contents
+ rel
->r_offset
);
2259 case R_C6000_FPHEAD
:
2261 /* No action needed. */
2264 case R_C6000_PCR_S21
:
2265 /* A branch to an undefined weak symbol is turned into a
2266 "b .s2 B3" instruction if the existing insn is of the
2267 form "b .s2 symbol". */
2268 if (h
? h
->root
.type
== bfd_link_hash_undefweak
2269 && (htab
->elf
.splt
== NULL
|| h
->plt
.offset
== (bfd_vma
) -1)
2270 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2272 unsigned long oldval
;
2273 oldval
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2275 if ((oldval
& 0x7e) == 0x12)
2277 oldval
&= 0xF0000001;
2278 bfd_put_32 (input_bfd
, oldval
| 0x000c0362,
2279 contents
+ rel
->r_offset
);
2286 case R_C6000_PCR_S12
:
2287 case R_C6000_PCR_S10
:
2288 case R_C6000_PCR_S7
:
2290 && h
->plt
.offset
!= (bfd_vma
) -1
2291 && htab
->elf
.splt
!= NULL
)
2293 relocation
= (htab
->elf
.splt
->output_section
->vma
2294 + htab
->elf
.splt
->output_offset
2298 /* Generic PC-relative handling produces a value relative to
2299 the exact location of the relocation. Adjust it to be
2300 relative to the start of the fetch packet instead. */
2301 relocation
+= (input_section
->output_section
->vma
2302 + input_section
->output_offset
2303 + rel
->r_offset
) & 0x1f;
2304 unresolved_reloc
= FALSE
;
2307 case R_C6000_PCR_H16
:
2308 case R_C6000_PCR_L16
:
2309 off
= (input_section
->output_section
->vma
2310 + input_section
->output_offset
2312 /* These must be calculated as R = S - FP(FP(PC) - A).
2313 PC, here, is the value we just computed in OFF. RELOCATION
2314 has the address of S + A. */
2315 relocation
-= rel
->r_addend
;
2316 off2
= ((off
& ~(bfd_vma
)0x1f) - rel
->r_addend
) & (bfd_vma
)~0x1f;
2317 off2
= relocation
- off2
;
2318 relocation
= off
+ off2
;
2321 case R_C6000_DSBT_INDEX
:
2322 relocation
= elf32_tic6x_hash_table (info
)->params
.dsbt_index
;
2323 if (!bfd_link_pic (info
) || relocation
!= 0)
2330 case R_C6000_ABS_S16
:
2331 case R_C6000_ABS_L16
:
2332 case R_C6000_ABS_H16
:
2333 /* When generating a shared object or relocatable executable, these
2334 relocations are copied into the output file to be resolved at
2336 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
2337 && (input_section
->flags
& SEC_ALLOC
)
2339 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2340 || h
->root
.type
!= bfd_link_hash_undefweak
))
2342 Elf_Internal_Rela outrel
;
2343 bfd_boolean skip
, relocate
;
2346 unresolved_reloc
= FALSE
;
2348 sreloc
= elf_section_data (input_section
)->sreloc
;
2349 BFD_ASSERT (sreloc
!= NULL
&& sreloc
->contents
!= NULL
);
2355 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2357 if (outrel
.r_offset
== (bfd_vma
) -1)
2359 else if (outrel
.r_offset
== (bfd_vma
) -2)
2360 skip
= TRUE
, relocate
= TRUE
;
2361 outrel
.r_offset
+= (input_section
->output_section
->vma
2362 + input_section
->output_offset
);
2365 memset (&outrel
, 0, sizeof outrel
);
2368 && (!bfd_link_pic (info
)
2369 || !SYMBOLIC_BIND (info
, h
)
2370 || !h
->def_regular
))
2372 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2373 outrel
.r_addend
= rel
->r_addend
;
2379 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2381 if (bfd_is_abs_section (sec
))
2383 else if (sec
== NULL
|| sec
->owner
== NULL
)
2385 bfd_set_error (bfd_error_bad_value
);
2392 osec
= sec
->output_section
;
2393 indx
= elf_section_data (osec
)->dynindx
;
2394 outrel
.r_addend
-= osec
->vma
;
2395 BFD_ASSERT (indx
!= 0);
2398 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
2401 elf32_tic6x_install_rela (output_bfd
, sreloc
, &outrel
);
2403 /* If this reloc is against an external symbol, we do not want to
2404 fiddle with the addend. Otherwise, we need to include the symbol
2405 value so that it becomes an addend for the dynamic reloc. */
2410 /* Generic logic OK. */
2413 case R_C6000_SBR_U15_B
:
2414 case R_C6000_SBR_U15_H
:
2415 case R_C6000_SBR_U15_W
:
2416 case R_C6000_SBR_S16
:
2417 case R_C6000_SBR_L16_B
:
2418 case R_C6000_SBR_L16_H
:
2419 case R_C6000_SBR_L16_W
:
2420 case R_C6000_SBR_H16_B
:
2421 case R_C6000_SBR_H16_H
:
2422 case R_C6000_SBR_H16_W
:
2423 sbh
= bfd_link_hash_lookup (info
->hash
, "__c6xabi_DSBT_BASE",
2424 FALSE
, FALSE
, TRUE
);
2426 && (sbh
->type
== bfd_link_hash_defined
2427 || sbh
->type
== bfd_link_hash_defweak
))
2429 if (h
? (h
->root
.type
== bfd_link_hash_undefweak
2430 && (htab
->elf
.splt
== NULL
2431 || h
->plt
.offset
== (bfd_vma
) -1))
2432 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2435 relocation
-= (sbh
->u
.def
.value
2436 + sbh
->u
.def
.section
->output_section
->vma
2437 + sbh
->u
.def
.section
->output_offset
);
2441 _bfd_error_handler (_("%B: SB-relative relocation but "
2442 "__c6xabi_DSBT_BASE not defined"),
2449 case R_C6000_SBR_GOT_U15_W
:
2450 case R_C6000_SBR_GOT_L16_W
:
2451 case R_C6000_SBR_GOT_H16_W
:
2452 case R_C6000_EHTYPE
:
2453 /* Relocation is to the entry for this symbol in the global
2455 if (htab
->elf
.sgot
== NULL
)
2462 off
= h
->got
.offset
;
2463 dyn
= htab
->elf
.dynamic_sections_created
;
2464 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2465 bfd_link_pic (info
),
2467 || (bfd_link_pic (info
)
2468 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2469 || (ELF_ST_VISIBILITY (h
->other
)
2470 && h
->root
.type
== bfd_link_hash_undefweak
))
2472 /* This is actually a static link, or it is a
2473 -Bsymbolic link and the symbol is defined
2474 locally, or the symbol was forced to be local
2475 because of a version file. We must initialize
2476 this entry in the global offset table. Since the
2477 offset must always be a multiple of 4, we use the
2478 least significant bit to record whether we have
2479 initialized it already.
2481 When doing a dynamic link, we create a .rel.got
2482 relocation entry to initialize the value. This
2483 is done in the finish_dynamic_symbol routine. */
2488 bfd_put_32 (output_bfd
, relocation
,
2489 htab
->elf
.sgot
->contents
+ off
);
2492 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2493 bfd_link_pic (info
),
2495 && !(ELF_ST_VISIBILITY (h
->other
)
2496 && h
->root
.type
== bfd_link_hash_undefweak
))
2497 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
,
2502 unresolved_reloc
= FALSE
;
2506 if (local_got_offsets
== NULL
)
2509 off
= local_got_offsets
[r_symndx
];
2511 /* The offset must always be a multiple of 4. We use
2512 the least significant bit to record whether we have
2513 already generated the necessary reloc. */
2518 bfd_put_32 (output_bfd
, relocation
,
2519 htab
->elf
.sgot
->contents
+ off
);
2521 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
2522 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
, off
);
2524 local_got_offsets
[r_symndx
] |= 1;
2528 if (off
>= (bfd_vma
) -2)
2532 relocation
= (htab
->elf
.sgot
->output_section
->vma
2533 + htab
->elf
.sgot
->output_offset
+ off
2534 - htab
->dsbt
->output_section
->vma
2535 - htab
->dsbt
->output_offset
);
2537 relocation
= (htab
->elf
.sgot
->output_section
->vma
2538 + htab
->elf
.sgot
->output_offset
+ off
2539 - htab
->elf
.sgotplt
->output_section
->vma
2540 - htab
->elf
.sgotplt
->output_offset
);
2542 if (rel
->r_addend
!= 0)
2544 /* We can't do anything for a relocation which is against
2545 a symbol *plus offset*. GOT holds relocations for
2546 symbols. Make this an error; the compiler isn't
2547 allowed to pass us these kinds of things. */
2550 /* xgettext:c-format */
2551 (_("%B, section %A: relocation %s with non-zero addend %Ld"
2552 " against local symbol"),
2555 elf32_tic6x_howto_table
[r_type
].name
,
2559 /* xgettext:c-format */
2560 (_("%B, section %A: relocation %s with non-zero addend %Ld"
2561 " against symbol `%s'"),
2564 elf32_tic6x_howto_table
[r_type
].name
,
2566 h
->root
.root
.string
[0] != '\0' ? h
->root
.root
.string
2567 : _("[whose name is lost]"));
2569 bfd_set_error (bfd_error_bad_value
);
2574 case R_C6000_PREL31
:
2576 && h
->plt
.offset
!= (bfd_vma
) -1
2577 && htab
->elf
.splt
!= NULL
)
2579 relocation
= (htab
->elf
.splt
->output_section
->vma
2580 + htab
->elf
.splt
->output_offset
2586 /* Invalid in relocatable object. */
2588 /* Unknown relocation. */
2589 /* xgettext:c-format */
2590 _bfd_error_handler (_("%B: invalid relocation type %d"),
2596 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2597 contents
, rel
->r_offset
,
2598 relocation
, rel
->r_addend
);
2601 if (r
== bfd_reloc_ok
2602 && howto
->complain_on_overflow
== complain_overflow_bitfield
)
2604 /* Generic overflow handling accepts cases the ABI says
2605 should be rejected for R_C6000_ABS16 and
2607 bfd_vma value
= (relocation
+ rel
->r_addend
) & 0xffffffff;
2608 bfd_vma sbit
= 1 << (howto
->bitsize
- 1);
2609 bfd_vma sbits
= (-(bfd_vma
) sbit
) & 0xffffffff;
2610 bfd_vma value_sbits
= value
& sbits
;
2612 if (value_sbits
!= 0
2613 && value_sbits
!= sbit
2614 && value_sbits
!= sbits
)
2615 r
= bfd_reloc_overflow
;
2618 if (r
!= bfd_reloc_ok
)
2621 const char *error_message
;
2624 name
= h
->root
.root
.string
;
2627 name
= bfd_elf_string_from_elf_section (input_bfd
,
2628 symtab_hdr
->sh_link
,
2633 name
= bfd_section_name (input_bfd
, sec
);
2638 case bfd_reloc_overflow
:
2639 /* If the overflowing reloc was to an undefined symbol,
2640 we have already printed one error message and there
2641 is no point complaining again. */
2642 if (!h
|| h
->root
.type
!= bfd_link_hash_undefined
)
2643 (*info
->callbacks
->reloc_overflow
)
2644 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2645 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
2648 case bfd_reloc_undefined
:
2649 (*info
->callbacks
->undefined_symbol
) (info
, name
, input_bfd
,
2651 rel
->r_offset
, TRUE
);
2654 case bfd_reloc_outofrange
:
2655 error_message
= _("out of range");
2658 case bfd_reloc_notsupported
:
2659 error_message
= _("unsupported relocation");
2662 case bfd_reloc_dangerous
:
2663 error_message
= _("dangerous relocation");
2667 error_message
= _("unknown error");
2671 BFD_ASSERT (error_message
!= NULL
);
2672 (*info
->callbacks
->reloc_dangerous
)
2673 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
2683 /* Look through the relocs for a section during the first phase, and
2684 calculate needed space in the global offset table, procedure linkage
2685 table, and dynamic reloc sections. */
2688 elf32_tic6x_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2689 asection
*sec
, const Elf_Internal_Rela
*relocs
)
2691 struct elf32_tic6x_link_hash_table
*htab
;
2692 Elf_Internal_Shdr
*symtab_hdr
;
2693 struct elf_link_hash_entry
**sym_hashes
;
2694 const Elf_Internal_Rela
*rel
;
2695 const Elf_Internal_Rela
*rel_end
;
2698 if (bfd_link_relocatable (info
))
2701 htab
= elf32_tic6x_hash_table (info
);
2702 symtab_hdr
= &elf_symtab_hdr (abfd
);
2703 sym_hashes
= elf_sym_hashes (abfd
);
2705 /* Create dynamic sections for relocatable executables so that we can
2706 copy relocations. */
2707 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (abfd
))
2708 && ! htab
->elf
.dynamic_sections_created
)
2710 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
2716 rel_end
= relocs
+ sec
->reloc_count
;
2717 for (rel
= relocs
; rel
< rel_end
; rel
++)
2719 unsigned int r_type
;
2720 unsigned int r_symndx
;
2721 struct elf_link_hash_entry
*h
;
2722 Elf_Internal_Sym
*isym
;
2724 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2725 r_type
= ELF32_R_TYPE (rel
->r_info
);
2727 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
2729 /* xgettext:c-format */
2730 _bfd_error_handler (_("%B: bad symbol index: %d"),
2735 if (r_symndx
< symtab_hdr
->sh_info
)
2737 /* A local symbol. */
2738 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2747 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2748 while (h
->root
.type
== bfd_link_hash_indirect
2749 || h
->root
.type
== bfd_link_hash_warning
)
2750 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2755 case R_C6000_PCR_S21
:
2756 case R_C6000_PREL31
:
2757 /* This symbol requires a procedure linkage table entry. We
2758 actually build the entry in adjust_dynamic_symbol,
2759 because this might be a case of linking PIC code which is
2760 never referenced by a dynamic object, in which case we
2761 don't need to generate a procedure linkage table entry
2764 /* If this is a local symbol, we resolve it directly without
2765 creating a procedure linkage table entry. */
2770 h
->plt
.refcount
+= 1;
2773 case R_C6000_SBR_GOT_U15_W
:
2774 case R_C6000_SBR_GOT_L16_W
:
2775 case R_C6000_SBR_GOT_H16_W
:
2776 case R_C6000_EHTYPE
:
2777 /* This symbol requires a global offset table entry. */
2780 h
->got
.refcount
+= 1;
2784 bfd_signed_vma
*local_got_refcounts
;
2786 /* This is a global offset table entry for a local symbol. */
2787 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2788 if (local_got_refcounts
== NULL
)
2792 size
= symtab_hdr
->sh_info
;
2793 size
*= (sizeof (bfd_signed_vma
)
2794 + sizeof (bfd_vma
) + sizeof(char));
2795 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2796 if (local_got_refcounts
== NULL
)
2798 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2800 local_got_refcounts
[r_symndx
] += 1;
2803 if (htab
->elf
.sgot
== NULL
)
2805 if (htab
->elf
.dynobj
== NULL
)
2806 htab
->elf
.dynobj
= abfd
;
2807 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2812 case R_C6000_DSBT_INDEX
:
2813 /* We'd like to check for nonzero dsbt_index here, but it's
2814 set up only after check_relocs is called. Instead, we
2815 store the number of R_C6000_DSBT_INDEX relocs in the
2816 pc_count field, and potentially discard the extra space
2817 in elf32_tic6x_allocate_dynrelocs. */
2818 if (!bfd_link_pic (info
))
2825 case R_C6000_ABS_S16
:
2826 case R_C6000_ABS_L16
:
2827 case R_C6000_ABS_H16
:
2828 /* If we are creating a shared library, and this is a reloc
2829 against a global symbol, or a non PC relative reloc
2830 against a local symbol, then we need to copy the reloc
2831 into the shared library. However, if we are linking with
2832 -Bsymbolic, we do not need to copy a reloc against a
2833 global symbol which is defined in an object we are
2834 including in the link (i.e., DEF_REGULAR is set). At
2835 this point we have not seen all the input files, so it is
2836 possible that DEF_REGULAR is not set now but will be set
2837 later (it is never cleared). In case of a weak definition,
2838 DEF_REGULAR may be cleared later by a strong definition in
2839 a shared library. We account for that possibility below by
2840 storing information in the relocs_copied field of the hash
2841 table entry. A similar situation occurs when creating
2842 shared libraries and symbol visibility changes render the
2845 If on the other hand, we are creating an executable, we
2846 may need to keep relocations for symbols satisfied by a
2847 dynamic library if we manage to avoid copy relocs for the
2849 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (abfd
))
2850 && (sec
->flags
& SEC_ALLOC
) != 0)
2852 struct elf_dyn_relocs
*p
;
2853 struct elf_dyn_relocs
**head
;
2855 /* We must copy these reloc types into the output file.
2856 Create a reloc section in dynobj and make room for
2860 if (htab
->elf
.dynobj
== NULL
)
2861 htab
->elf
.dynobj
= abfd
;
2863 sreloc
= _bfd_elf_make_dynamic_reloc_section
2864 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela? */ TRUE
);
2870 /* If this is a global symbol, we count the number of
2871 relocations we need for this symbol. */
2874 head
= &((struct elf32_tic6x_link_hash_entry
*) h
)->dyn_relocs
;
2878 /* Track dynamic relocs needed for local syms too.
2879 We really need local syms available to do this
2884 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2888 vpp
= &elf_section_data (s
)->local_dynrel
;
2889 head
= (struct elf_dyn_relocs
**)vpp
;
2893 if (p
== NULL
|| p
->sec
!= sec
)
2895 bfd_size_type amt
= sizeof *p
;
2896 p
= bfd_alloc (htab
->elf
.dynobj
, amt
);
2907 if (r_type
== R_C6000_DSBT_INDEX
)
2912 case R_C6000_SBR_U15_B
:
2913 case R_C6000_SBR_U15_H
:
2914 case R_C6000_SBR_U15_W
:
2915 case R_C6000_SBR_S16
:
2916 case R_C6000_SBR_L16_B
:
2917 case R_C6000_SBR_L16_H
:
2918 case R_C6000_SBR_L16_W
:
2919 case R_C6000_SBR_H16_B
:
2920 case R_C6000_SBR_H16_H
:
2921 case R_C6000_SBR_H16_W
:
2922 if (h
!= NULL
&& bfd_link_executable (info
))
2924 /* For B14-relative addresses, we might need a copy
2939 elf32_tic6x_add_symbol_hook (bfd
*abfd
,
2940 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2941 Elf_Internal_Sym
*sym
,
2942 const char **namep ATTRIBUTE_UNUSED
,
2943 flagword
*flagsp ATTRIBUTE_UNUSED
,
2947 switch (sym
->st_shndx
)
2949 case SHN_TIC6X_SCOMMON
:
2950 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
2951 (*secp
)->flags
|= SEC_IS_COMMON
;
2952 *valp
= sym
->st_size
;
2953 (void) bfd_set_section_alignment (abfd
, *secp
, bfd_log2 (sym
->st_value
));
2961 elf32_tic6x_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
2963 elf_symbol_type
*elfsym
;
2965 elfsym
= (elf_symbol_type
*) asym
;
2966 switch (elfsym
->internal_elf_sym
.st_shndx
)
2968 case SHN_TIC6X_SCOMMON
:
2969 if (tic6x_elf_scom_section
.name
== NULL
)
2971 /* Initialize the small common section. */
2972 tic6x_elf_scom_section
.name
= ".scommon";
2973 tic6x_elf_scom_section
.flags
= SEC_IS_COMMON
;
2974 tic6x_elf_scom_section
.output_section
= &tic6x_elf_scom_section
;
2975 tic6x_elf_scom_section
.symbol
= &tic6x_elf_scom_symbol
;
2976 tic6x_elf_scom_section
.symbol_ptr_ptr
= &tic6x_elf_scom_symbol_ptr
;
2977 tic6x_elf_scom_symbol
.name
= ".scommon";
2978 tic6x_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
2979 tic6x_elf_scom_symbol
.section
= &tic6x_elf_scom_section
;
2980 tic6x_elf_scom_symbol_ptr
= &tic6x_elf_scom_symbol
;
2982 asym
->section
= &tic6x_elf_scom_section
;
2983 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
2989 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2990 const char *name ATTRIBUTE_UNUSED
,
2991 Elf_Internal_Sym
*sym
,
2992 asection
*input_sec
,
2993 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
)
2995 /* If we see a common symbol, which implies a relocatable link, then
2996 if a symbol was small common in an input file, mark it as small
2997 common in the output file. */
2998 if (sym
->st_shndx
== SHN_COMMON
&& strcmp (input_sec
->name
, ".scommon") == 0)
2999 sym
->st_shndx
= SHN_TIC6X_SCOMMON
;
3005 elf32_tic6x_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
3009 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
3011 *retval
= SHN_TIC6X_SCOMMON
;
3018 /* Allocate space in .plt, .got and associated reloc sections for
3022 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3024 struct bfd_link_info
*info
;
3025 struct elf32_tic6x_link_hash_table
*htab
;
3026 struct elf32_tic6x_link_hash_entry
*eh
;
3027 struct elf_dyn_relocs
*p
;
3029 if (h
->root
.type
== bfd_link_hash_indirect
)
3032 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3033 info
= (struct bfd_link_info
*) inf
;
3034 htab
= elf32_tic6x_hash_table (info
);
3036 if (htab
->elf
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
3038 /* Make sure this symbol is output as a dynamic symbol.
3039 Undefined weak syms won't yet be marked as dynamic. */
3040 if (h
->dynindx
== -1 && !h
->forced_local
)
3042 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3046 if (bfd_link_pic (info
)
3047 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
3049 asection
*s
= htab
->elf
.splt
;
3051 /* If this is the first .plt entry, make room for the special
3054 s
->size
+= PLT_ENTRY_SIZE
;
3056 h
->plt
.offset
= s
->size
;
3058 /* If this symbol is not defined in a regular file, and we are
3059 not generating a shared library, then set the symbol to this
3060 location in the .plt. This is required to make function
3061 pointers compare as equal between the normal executable and
3062 the shared library. */
3063 if (! bfd_link_pic (info
) && !h
->def_regular
)
3065 h
->root
.u
.def
.section
= s
;
3066 h
->root
.u
.def
.value
= h
->plt
.offset
;
3069 /* Make room for this entry. */
3070 s
->size
+= PLT_ENTRY_SIZE
;
3071 /* We also need to make an entry in the .got.plt section, which
3072 will be placed in the .got section by the linker script. */
3073 htab
->elf
.sgotplt
->size
+= 4;
3074 /* We also need to make an entry in the .rel.plt section. */
3075 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
3079 h
->plt
.offset
= (bfd_vma
) -1;
3085 h
->plt
.offset
= (bfd_vma
) -1;
3089 if (h
->got
.refcount
> 0)
3093 /* Make sure this symbol is output as a dynamic symbol.
3094 Undefined weak syms won't yet be marked as dynamic. */
3095 if (h
->dynindx
== -1
3096 && !h
->forced_local
)
3098 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3103 h
->got
.offset
= s
->size
;
3106 if (!(ELF_ST_VISIBILITY (h
->other
)
3107 && h
->root
.type
== bfd_link_hash_undefweak
))
3108 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3111 h
->got
.offset
= (bfd_vma
) -1;
3113 if (eh
->dyn_relocs
== NULL
)
3116 /* Discard relocs on undefined weak syms with non-default
3118 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (htab
->obfd
))
3120 /* We use the pc_count field to hold the number of
3121 R_C6000_DSBT_INDEX relocs. */
3122 if (htab
->params
.dsbt_index
!= 0)
3124 struct elf_dyn_relocs
**pp
;
3126 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
3128 p
->count
-= p
->pc_count
;
3137 if (eh
->dyn_relocs
!= NULL
3138 && h
->root
.type
== bfd_link_hash_undefweak
)
3140 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3141 eh
->dyn_relocs
= NULL
;
3143 /* Make sure undefined weak symbols are output as a dynamic
3145 else if (h
->dynindx
== -1
3146 && !h
->forced_local
)
3148 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3154 /* Finally, allocate space. */
3155 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3159 sreloc
= elf_section_data (p
->sec
)->sreloc
;
3161 BFD_ASSERT (sreloc
!= NULL
);
3162 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3168 /* Find any dynamic relocs that apply to read-only sections. */
3171 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3173 struct elf32_tic6x_link_hash_entry
*eh
;
3174 struct elf_dyn_relocs
*p
;
3176 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3177 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3179 asection
*s
= p
->sec
->output_section
;
3181 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
3183 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
3185 info
->flags
|= DF_TEXTREL
;
3187 /* Not an error, just cut short the traversal. */
3194 /* Set the sizes of the dynamic sections. */
3197 elf32_tic6x_size_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3199 struct elf32_tic6x_link_hash_table
*htab
;
3205 htab
= elf32_tic6x_hash_table (info
);
3206 dynobj
= htab
->elf
.dynobj
;
3210 if (htab
->elf
.dynamic_sections_created
)
3212 /* Set the contents of the .interp section to the interpreter. */
3213 if (bfd_link_executable (info
) && !info
->nointerp
)
3215 s
= bfd_get_linker_section (dynobj
, ".interp");
3218 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3219 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3223 /* Set up .got offsets for local syms, and space for local dynamic
3225 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3227 bfd_signed_vma
*local_got
;
3228 bfd_signed_vma
*end_local_got
;
3229 bfd_size_type locsymcount
;
3230 Elf_Internal_Shdr
*symtab_hdr
;
3233 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3235 struct elf_dyn_relocs
*p
;
3237 for (p
= ((struct elf_dyn_relocs
*)
3238 elf_section_data (s
)->local_dynrel
);
3242 if (!bfd_is_abs_section (p
->sec
)
3243 && bfd_is_abs_section (p
->sec
->output_section
))
3245 /* Input section has been discarded, either because
3246 it is a copy of a linkonce section or due to
3247 linker script /DISCARD/, so we'll be discarding
3250 else if (p
->count
!= 0)
3252 srel
= elf_section_data (p
->sec
)->sreloc
;
3253 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3254 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3255 info
->flags
|= DF_TEXTREL
;
3260 local_got
= elf_local_got_refcounts (ibfd
);
3264 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3265 locsymcount
= symtab_hdr
->sh_info
;
3266 end_local_got
= local_got
+ locsymcount
;
3268 srel
= htab
->elf
.srelgot
;
3269 for (; local_got
< end_local_got
; ++local_got
)
3273 *local_got
= s
->size
;
3276 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
3278 srel
->size
+= sizeof (Elf32_External_Rela
);
3282 *local_got
= (bfd_vma
) -1;
3286 /* Allocate global sym .plt and .got entries, and space for global
3287 sym dynamic relocs. */
3288 elf_link_hash_traverse (&htab
->elf
, elf32_tic6x_allocate_dynrelocs
, info
);
3290 /* We now have determined the sizes of the various dynamic sections.
3291 Allocate memory for them. */
3293 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3295 bfd_boolean strip_section
= TRUE
;
3297 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3300 if (s
== htab
->dsbt
)
3301 s
->size
= 4 * htab
->params
.dsbt_size
;
3302 else if (s
== htab
->elf
.splt
3303 || s
== htab
->elf
.sgot
3304 || s
== htab
->elf
.sgotplt
3305 || s
== htab
->elf
.sdynbss
3306 || s
== htab
->elf
.sdynrelro
)
3308 /* Strip this section if we don't need it; see the
3310 /* We'd like to strip these sections if they aren't needed, but if
3311 we've exported dynamic symbols from them we must leave them.
3312 It's too late to tell BFD to get rid of the symbols. */
3314 if (htab
->elf
.hplt
!= NULL
)
3315 strip_section
= FALSE
;
3317 /* Round up the size of the PLT section to a multiple of 32. */
3318 if (s
== htab
->elf
.splt
&& s
->size
> 0)
3319 s
->size
= (s
->size
+ 31) & ~(bfd_vma
)31;
3321 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
3324 && s
!= htab
->elf
.srelplt
)
3327 /* We use the reloc_count field as a counter if we need
3328 to copy relocs into the output file. */
3333 /* It's not one of our sections, so don't allocate space. */
3339 /* If we don't need this section, strip it from the
3340 output file. This is mostly to handle .rel.bss and
3341 .rel.plt. We must create both sections in
3342 create_dynamic_sections, because they must be created
3343 before the linker maps input sections to output
3344 sections. The linker does that before
3345 adjust_dynamic_symbol is called, and it is that
3346 function which decides whether anything needs to go
3347 into these sections. */
3349 s
->flags
|= SEC_EXCLUDE
;
3353 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3356 /* Allocate memory for the section contents. We use bfd_zalloc
3357 here in case unused entries are not reclaimed before the
3358 section's contents are written out. This should not happen,
3359 but this way if it does, we get a R_C6000_NONE reloc instead
3361 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
3362 if (s
->contents
== NULL
)
3366 if (htab
->elf
.dynamic_sections_created
)
3368 /* Add some entries to the .dynamic section. We fill in the
3369 values later, in elf32_tic6x_finish_dynamic_sections, but we
3370 must add the entries now so that we get the correct size for
3371 the .dynamic section. The DT_DEBUG entry is filled in by the
3372 dynamic linker and used by the debugger. */
3373 #define add_dynamic_entry(TAG, VAL) \
3374 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3376 if (bfd_link_executable (info
))
3378 if (!add_dynamic_entry (DT_DEBUG
, 0))
3382 if (!add_dynamic_entry (DT_C6000_DSBT_BASE
, 0)
3383 || !add_dynamic_entry (DT_C6000_DSBT_SIZE
, htab
->params
.dsbt_size
)
3384 || !add_dynamic_entry (DT_C6000_DSBT_INDEX
,
3385 htab
->params
.dsbt_index
))
3388 if (htab
->elf
.splt
->size
!= 0)
3390 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3391 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3392 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3393 || !add_dynamic_entry (DT_JMPREL
, 0))
3399 if (!add_dynamic_entry (DT_RELA
, 0)
3400 || !add_dynamic_entry (DT_RELASZ
, 0)
3401 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3404 /* If any dynamic relocs apply to a read-only section,
3405 then we need a DT_TEXTREL entry. */
3406 if ((info
->flags
& DF_TEXTREL
) == 0)
3407 elf_link_hash_traverse (&htab
->elf
,
3408 elf32_tic6x_readonly_dynrelocs
, info
);
3410 if ((info
->flags
& DF_TEXTREL
) != 0)
3412 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3417 #undef add_dynamic_entry
3422 /* This function is called after all the input files have been read,
3423 and the input sections have been assigned to output sections. */
3426 elf32_tic6x_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3428 if (elf32_tic6x_using_dsbt (output_bfd
) && !bfd_link_relocatable (info
)
3429 && !bfd_elf_stack_segment_size (output_bfd
, info
,
3430 "__stacksize", DEFAULT_STACK_SIZE
))
3437 elf32_tic6x_finish_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3438 struct bfd_link_info
*info
)
3440 struct elf32_tic6x_link_hash_table
*htab
;
3444 htab
= elf32_tic6x_hash_table (info
);
3445 dynobj
= htab
->elf
.dynobj
;
3446 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3448 if (elf_hash_table (info
)->dynamic_sections_created
)
3450 Elf32_External_Dyn
* dyncon
;
3451 Elf32_External_Dyn
* dynconend
;
3453 BFD_ASSERT (sdyn
!= NULL
);
3455 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3456 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3458 for (; dyncon
< dynconend
; dyncon
++)
3460 Elf_Internal_Dyn dyn
;
3463 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3470 case DT_C6000_DSBT_BASE
:
3472 dyn
.d_un
.d_ptr
= (s
->output_section
->vma
+ s
->output_offset
);
3476 s
= htab
->elf
.sgotplt
;
3477 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3481 s
= htab
->elf
.srelplt
;
3482 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3486 s
= htab
->elf
.srelplt
;
3487 dyn
.d_un
.d_val
= s
->size
;
3490 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3493 /* Fill in the first entry in the procedure linkage table. */
3494 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3496 bfd_vma got_offs
= (htab
->elf
.sgotplt
->output_section
->vma
3497 + htab
->elf
.sgotplt
->output_offset
3498 - htab
->dsbt
->output_section
->vma
3499 - htab
->dsbt
->output_offset
) / 4;
3501 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3502 bfd_put_32 (output_bfd
, got_offs
<< 8 | 0x0100006e,
3503 htab
->elf
.splt
->contents
);
3504 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3505 bfd_put_32 (output_bfd
, (got_offs
+ 1) << 8 | 0x0080006e,
3506 htab
->elf
.splt
->contents
+ 4);
3508 bfd_put_32 (output_bfd
, 0x00004000,
3509 htab
->elf
.splt
->contents
+ 8);
3511 bfd_put_32 (output_bfd
, 0x00080362,
3512 htab
->elf
.splt
->contents
+ 12);
3514 bfd_put_32 (output_bfd
, 0x00008000,
3515 htab
->elf
.splt
->contents
+ 16);
3517 elf_section_data (htab
->elf
.splt
->output_section
)
3518 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
3525 /* Return address for Ith PLT stub in section PLT, for relocation REL
3526 or (bfd_vma) -1 if it should not be included. */
3529 elf32_tic6x_plt_sym_val (bfd_vma i
, const asection
*plt
,
3530 const arelent
*rel ATTRIBUTE_UNUSED
)
3532 return plt
->vma
+ (i
+ 1) * PLT_ENTRY_SIZE
;
3536 elf32_tic6x_obj_attrs_arg_type (int tag
)
3538 if (tag
== Tag_ABI_compatibility
)
3539 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_STR_VAL
;
3541 return ATTR_TYPE_FLAG_STR_VAL
;
3543 return ATTR_TYPE_FLAG_INT_VAL
;
3547 elf32_tic6x_obj_attrs_order (int num
)
3549 if (num
== LEAST_KNOWN_OBJ_ATTRIBUTE
)
3550 return Tag_ABI_conformance
;
3551 if ((num
- 1) < Tag_ABI_conformance
)
3557 elf32_tic6x_obj_attrs_handle_unknown (bfd
*abfd
, int tag
)
3559 if ((tag
& 127) < 64)
3562 /* xgettext:c-format */
3563 (_("%B: error: unknown mandatory EABI object attribute %d"),
3565 bfd_set_error (bfd_error_bad_value
);
3571 /* xgettext:c-format */
3572 (_("%B: warning: unknown EABI object attribute %d"),
3578 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3579 and return the merged value. At present, all merges succeed, so no
3580 return value for errors is defined. */
3583 elf32_tic6x_merge_arch_attributes (int arch1
, int arch2
)
3585 int min_arch
, max_arch
;
3587 min_arch
= (arch1
< arch2
? arch1
: arch2
);
3588 max_arch
= (arch1
> arch2
? arch1
: arch2
);
3590 /* In most cases, the numerically greatest value is the correct
3591 merged value, but merging C64 and C67 results in C674X. */
3592 if ((min_arch
== C6XABI_Tag_ISA_C67X
3593 || min_arch
== C6XABI_Tag_ISA_C67XP
)
3594 && (max_arch
== C6XABI_Tag_ISA_C64X
3595 || max_arch
== C6XABI_Tag_ISA_C64XP
))
3596 return C6XABI_Tag_ISA_C674X
;
3601 /* Convert a Tag_ABI_array_object_alignment or
3602 Tag_ABI_array_object_align_expected tag value TAG to a
3603 corresponding alignment value; return the alignment, or -1 for an
3604 unknown tag value. */
3607 elf32_tic6x_tag_to_array_alignment (int tag
)
3625 /* Convert a Tag_ABI_array_object_alignment or
3626 Tag_ABI_array_object_align_expected alignment ALIGN to a
3627 corresponding tag value; return the tag value. */
3630 elf32_tic6x_array_alignment_to_tag (int align
)
3648 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3649 succeeded, FALSE otherwise. */
3652 elf32_tic6x_merge_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
3654 bfd
*obfd
= info
->output_bfd
;
3655 bfd_boolean result
= TRUE
;
3656 obj_attribute
*in_attr
;
3657 obj_attribute
*out_attr
;
3659 int array_align_in
, array_align_out
, array_expect_in
, array_expect_out
;
3661 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3663 /* This is the first object. Copy the attributes. */
3664 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3666 out_attr
= elf_known_obj_attributes_proc (obfd
);
3668 /* Use the Tag_null value to indicate the attributes have been
3675 in_attr
= elf_known_obj_attributes_proc (ibfd
);
3676 out_attr
= elf_known_obj_attributes_proc (obfd
);
3678 /* No specification yet for handling of unknown attributes, so just
3679 ignore them and handle known ones. */
3681 if (out_attr
[Tag_ABI_stack_align_preserved
].i
3682 < in_attr
[Tag_ABI_stack_align_needed
].i
)
3685 /* xgettext:c-format */
3686 (_("error: %B requires more stack alignment than %B preserves"),
3690 if (in_attr
[Tag_ABI_stack_align_preserved
].i
3691 < out_attr
[Tag_ABI_stack_align_needed
].i
)
3694 /* xgettext:c-format */
3695 (_("error: %B requires more stack alignment than %B preserves"),
3700 array_align_in
= elf32_tic6x_tag_to_array_alignment
3701 (in_attr
[Tag_ABI_array_object_alignment
].i
);
3702 if (array_align_in
== -1)
3705 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3709 array_align_out
= elf32_tic6x_tag_to_array_alignment
3710 (out_attr
[Tag_ABI_array_object_alignment
].i
);
3711 if (array_align_out
== -1)
3714 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3718 array_expect_in
= elf32_tic6x_tag_to_array_alignment
3719 (in_attr
[Tag_ABI_array_object_align_expected
].i
);
3720 if (array_expect_in
== -1)
3723 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3727 array_expect_out
= elf32_tic6x_tag_to_array_alignment
3728 (out_attr
[Tag_ABI_array_object_align_expected
].i
);
3729 if (array_expect_out
== -1)
3732 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3737 if (array_align_out
< array_expect_in
)
3740 /* xgettext:c-format */
3741 (_("error: %B requires more array alignment than %B preserves"),
3745 if (array_align_in
< array_expect_out
)
3748 /* xgettext:c-format */
3749 (_("error: %B requires more array alignment than %B preserves"),
3754 for (i
= LEAST_KNOWN_OBJ_ATTRIBUTE
; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
3759 out_attr
[i
].i
= elf32_tic6x_merge_arch_attributes (in_attr
[i
].i
,
3763 case Tag_ABI_wchar_t
:
3764 if (out_attr
[i
].i
== 0)
3765 out_attr
[i
].i
= in_attr
[i
].i
;
3766 if (out_attr
[i
].i
!= 0
3767 && in_attr
[i
].i
!= 0
3768 && out_attr
[i
].i
!= in_attr
[i
].i
)
3771 /* xgettext:c-format */
3772 (_("warning: %B and %B differ in wchar_t size"), obfd
, ibfd
);
3776 case Tag_ABI_stack_align_needed
:
3777 if (out_attr
[i
].i
< in_attr
[i
].i
)
3778 out_attr
[i
].i
= in_attr
[i
].i
;
3781 case Tag_ABI_stack_align_preserved
:
3782 if (out_attr
[i
].i
> in_attr
[i
].i
)
3783 out_attr
[i
].i
= in_attr
[i
].i
;
3787 if (out_attr
[i
].i
!= in_attr
[i
].i
)
3790 /* xgettext:c-format */
3791 (_("warning: %B and %B differ in whether code is "
3792 "compiled for DSBT"),
3799 if (out_attr
[i
].i
> in_attr
[i
].i
)
3800 out_attr
[i
].i
= in_attr
[i
].i
;
3803 case Tag_ABI_array_object_alignment
:
3804 if (array_align_out
!= -1
3805 && array_align_in
!= -1
3806 && array_align_out
> array_align_in
)
3808 = elf32_tic6x_array_alignment_to_tag (array_align_in
);
3811 case Tag_ABI_array_object_align_expected
:
3812 if (array_expect_out
!= -1
3813 && array_expect_in
!= -1
3814 && array_expect_out
< array_expect_in
)
3816 = elf32_tic6x_array_alignment_to_tag (array_expect_in
);
3819 case Tag_ABI_conformance
:
3820 /* Merging for this attribute is not specified. As on ARM,
3821 treat a missing attribute as no claim to conform and only
3822 merge identical values. */
3823 if (out_attr
[i
].s
== NULL
3824 || in_attr
[i
].s
== NULL
3825 || strcmp (out_attr
[i
].s
,
3827 out_attr
[i
].s
= NULL
;
3830 case Tag_ABI_compatibility
:
3831 /* Merged in _bfd_elf_merge_object_attributes. */
3836 = result
&& _bfd_elf_merge_unknown_attribute_low (ibfd
, obfd
, i
);
3840 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
3841 out_attr
[i
].type
= in_attr
[i
].type
;
3844 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
3845 if (!_bfd_elf_merge_object_attributes (ibfd
, info
))
3848 result
&= _bfd_elf_merge_unknown_attribute_list (ibfd
, obfd
);
3854 elf32_tic6x_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3856 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
3859 if (! is_tic6x_elf (ibfd
) || ! is_tic6x_elf (info
->output_bfd
))
3862 if (!elf32_tic6x_merge_attributes (ibfd
, info
))
3868 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
3869 adds the edit to the start of the list. (The list must be built in order of
3870 ascending TINDEX: the function's callers are primarily responsible for
3871 maintaining that condition). */
3874 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit
**head
,
3875 tic6x_unwind_table_edit
**tail
,
3876 tic6x_unwind_edit_type type
,
3877 asection
*linked_section
,
3878 unsigned int tindex
)
3880 tic6x_unwind_table_edit
*new_edit
= (tic6x_unwind_table_edit
*)
3881 xmalloc (sizeof (tic6x_unwind_table_edit
));
3883 new_edit
->type
= type
;
3884 new_edit
->linked_section
= linked_section
;
3885 new_edit
->index
= tindex
;
3889 new_edit
->next
= NULL
;
3892 (*tail
)->next
= new_edit
;
3901 new_edit
->next
= *head
;
3910 static _tic6x_elf_section_data
*
3911 get_tic6x_elf_section_data (asection
* sec
)
3913 if (sec
&& sec
->owner
&& is_tic6x_elf (sec
->owner
))
3914 return elf32_tic6x_section_data (sec
);
3920 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
3922 elf32_tic6x_adjust_exidx_size (asection
*exidx_sec
, int adjust
)
3926 if (!exidx_sec
->rawsize
)
3927 exidx_sec
->rawsize
= exidx_sec
->size
;
3929 bfd_set_section_size (exidx_sec
->owner
, exidx_sec
, exidx_sec
->size
+ adjust
);
3930 out_sec
= exidx_sec
->output_section
;
3931 /* Adjust size of output section. */
3932 bfd_set_section_size (out_sec
->owner
, out_sec
, out_sec
->size
+adjust
);
3935 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
3937 elf32_tic6x_insert_cantunwind_after (asection
*text_sec
, asection
*exidx_sec
)
3939 struct _tic6x_elf_section_data
*exidx_data
;
3941 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
3942 elf32_tic6x_add_unwind_table_edit (
3943 &exidx_data
->u
.exidx
.unwind_edit_list
,
3944 &exidx_data
->u
.exidx
.unwind_edit_tail
,
3945 INSERT_EXIDX_CANTUNWIND_AT_END
, text_sec
, UINT_MAX
);
3947 elf32_tic6x_adjust_exidx_size (exidx_sec
, 8);
3950 /* Scan .cx6abi.exidx tables, and create a list describing edits which
3951 should be made to those tables, such that:
3953 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
3954 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
3955 codes which have been inlined into the index).
3957 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
3959 The edits are applied when the tables are written
3960 (in elf32_tic6x_write_section).
3964 elf32_tic6x_fix_exidx_coverage (asection
**text_section_order
,
3965 unsigned int num_text_sections
,
3966 struct bfd_link_info
*info
,
3967 bfd_boolean merge_exidx_entries
)
3970 unsigned int last_second_word
= 0, i
;
3971 asection
*last_exidx_sec
= NULL
;
3972 asection
*last_text_sec
= NULL
;
3973 int last_unwind_type
= -1;
3975 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
3977 for (inp
= info
->input_bfds
; inp
!= NULL
; inp
= inp
->link
.next
)
3981 for (sec
= inp
->sections
; sec
!= NULL
; sec
= sec
->next
)
3983 struct bfd_elf_section_data
*elf_sec
= elf_section_data (sec
);
3984 Elf_Internal_Shdr
*hdr
= &elf_sec
->this_hdr
;
3986 if (!hdr
|| hdr
->sh_type
!= SHT_C6000_UNWIND
)
3989 if (elf_sec
->linked_to
)
3991 Elf_Internal_Shdr
*linked_hdr
3992 = &elf_section_data (elf_sec
->linked_to
)->this_hdr
;
3993 struct _tic6x_elf_section_data
*linked_sec_tic6x_data
3994 = get_tic6x_elf_section_data (linked_hdr
->bfd_section
);
3996 if (linked_sec_tic6x_data
== NULL
)
3999 /* Link this .c6xabi.exidx section back from the
4000 text section it describes. */
4001 linked_sec_tic6x_data
->u
.text
.tic6x_exidx_sec
= sec
;
4006 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4007 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4008 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4010 for (i
= 0; i
< num_text_sections
; i
++)
4012 asection
*sec
= text_section_order
[i
];
4013 asection
*exidx_sec
;
4014 struct _tic6x_elf_section_data
*tic6x_data
4015 = get_tic6x_elf_section_data (sec
);
4016 struct _tic6x_elf_section_data
*exidx_data
;
4017 bfd_byte
*contents
= NULL
;
4018 int deleted_exidx_bytes
= 0;
4020 tic6x_unwind_table_edit
*unwind_edit_head
= NULL
;
4021 tic6x_unwind_table_edit
*unwind_edit_tail
= NULL
;
4022 Elf_Internal_Shdr
*hdr
;
4025 if (tic6x_data
== NULL
)
4028 exidx_sec
= tic6x_data
->u
.text
.tic6x_exidx_sec
;
4029 if (exidx_sec
== NULL
)
4031 /* Section has no unwind data. */
4032 if (last_unwind_type
== 0 || !last_exidx_sec
)
4035 /* Ignore zero sized sections. */
4039 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4040 last_unwind_type
= 0;
4044 /* Skip /DISCARD/ sections. */
4045 if (bfd_is_abs_section (exidx_sec
->output_section
))
4048 hdr
= &elf_section_data (exidx_sec
)->this_hdr
;
4049 if (hdr
->sh_type
!= SHT_C6000_UNWIND
)
4052 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4053 if (exidx_data
== NULL
)
4056 ibfd
= exidx_sec
->owner
;
4058 if (hdr
->contents
!= NULL
)
4059 contents
= hdr
->contents
;
4060 else if (! bfd_malloc_and_get_section (ibfd
, exidx_sec
, &contents
))
4064 for (j
= 0; j
< hdr
->sh_size
; j
+= 8)
4066 unsigned int second_word
= bfd_get_32 (ibfd
, contents
+ j
+ 4);
4070 /* An EXIDX_CANTUNWIND entry. */
4071 if (second_word
== 1)
4073 if (last_unwind_type
== 0)
4077 /* Inlined unwinding data. Merge if equal to previous. */
4078 else if ((second_word
& 0x80000000) != 0)
4080 if (merge_exidx_entries
4081 && last_second_word
== second_word
4082 && last_unwind_type
== 1)
4085 last_second_word
= second_word
;
4087 /* Normal table entry. In theory we could merge these too,
4088 but duplicate entries are likely to be much less common. */
4094 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head
,
4095 &unwind_edit_tail
, DELETE_EXIDX_ENTRY
, NULL
, j
/ 8);
4097 deleted_exidx_bytes
+= 8;
4100 last_unwind_type
= unwind_type
;
4103 /* Free contents if we allocated it ourselves. */
4104 if (contents
!= hdr
->contents
)
4107 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4108 exidx_data
->u
.exidx
.unwind_edit_list
= unwind_edit_head
;
4109 exidx_data
->u
.exidx
.unwind_edit_tail
= unwind_edit_tail
;
4111 if (deleted_exidx_bytes
> 0)
4112 elf32_tic6x_adjust_exidx_size (exidx_sec
, -deleted_exidx_bytes
);
4114 last_exidx_sec
= exidx_sec
;
4115 last_text_sec
= sec
;
4118 /* Add terminating CANTUNWIND entry. */
4119 if (last_exidx_sec
&& last_unwind_type
!= 0)
4120 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4125 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4127 static unsigned long
4128 elf32_tic6x_add_low31 (unsigned long val
, bfd_vma addend
)
4130 return (val
& ~0x7ffffffful
) | ((val
+ addend
) & 0x7ffffffful
);
4133 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4134 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4138 elf32_tic6x_copy_exidx_entry (bfd
*output_bfd
, bfd_byte
*to
, bfd_byte
*from
,
4141 unsigned long first_word
= bfd_get_32 (output_bfd
, from
);
4142 unsigned long second_word
= bfd_get_32 (output_bfd
, from
+ 4);
4145 /* High bit of first word is supposed to be zero. */
4146 if ((first_word
& 0x80000000ul
) == 0)
4147 first_word
= elf32_tic6x_add_low31 (first_word
, offset
);
4149 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4150 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4151 if ((second_word
!= 0x1) && ((second_word
& 0x80000000ul
) == 0))
4152 second_word
= elf32_tic6x_add_low31 (second_word
, offset
);
4154 bfd_put_32 (output_bfd
, first_word
, to
);
4155 bfd_put_32 (output_bfd
, second_word
, to
+ 4);
4158 /* Do the actual mangling of exception index tables. */
4161 elf32_tic6x_write_section (bfd
*output_bfd
,
4162 struct bfd_link_info
*link_info
,
4166 _tic6x_elf_section_data
*tic6x_data
;
4167 struct elf32_tic6x_link_hash_table
*globals
4168 = elf32_tic6x_hash_table (link_info
);
4169 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
4171 if (globals
== NULL
)
4174 /* If this section has not been allocated an _tic6x_elf_section_data
4175 structure then we cannot record anything. */
4176 tic6x_data
= get_tic6x_elf_section_data (sec
);
4177 if (tic6x_data
== NULL
)
4180 if (tic6x_data
->elf
.this_hdr
.sh_type
!= SHT_C6000_UNWIND
)
4183 tic6x_unwind_table_edit
*edit_node
4184 = tic6x_data
->u
.exidx
.unwind_edit_list
;
4185 /* Now, sec->size is the size of the section we will write. The original
4186 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4187 markers) was sec->rawsize. (This isn't the case if we perform no
4188 edits, then rawsize will be zero and we should use size). */
4189 bfd_byte
*edited_contents
= (bfd_byte
*) bfd_malloc (sec
->size
);
4190 unsigned int input_size
= sec
->rawsize
? sec
->rawsize
: sec
->size
;
4191 unsigned int in_index
, out_index
;
4192 bfd_vma add_to_offsets
= 0;
4194 for (in_index
= 0, out_index
= 0; in_index
* 8 < input_size
|| edit_node
;)
4198 unsigned int edit_index
= edit_node
->index
;
4200 if (in_index
< edit_index
&& in_index
* 8 < input_size
)
4202 elf32_tic6x_copy_exidx_entry (output_bfd
,
4203 edited_contents
+ out_index
* 8,
4204 contents
+ in_index
* 8, add_to_offsets
);
4208 else if (in_index
== edit_index
4209 || (in_index
* 8 >= input_size
4210 && edit_index
== UINT_MAX
))
4212 switch (edit_node
->type
)
4214 case DELETE_EXIDX_ENTRY
:
4216 add_to_offsets
+= 8;
4219 case INSERT_EXIDX_CANTUNWIND_AT_END
:
4221 asection
*text_sec
= edit_node
->linked_section
;
4222 bfd_vma text_offset
= text_sec
->output_section
->vma
4223 + text_sec
->output_offset
4225 bfd_vma exidx_offset
= offset
+ out_index
* 8;
4226 unsigned long prel31_offset
;
4228 /* Note: this is meant to be equivalent to an
4229 R_C6000_PREL31 relocation. These synthetic
4230 EXIDX_CANTUNWIND markers are not relocated by the
4231 usual BFD method. */
4232 prel31_offset
= ((text_offset
- exidx_offset
) >> 1)
4235 /* First address we can't unwind. */
4236 bfd_put_32 (output_bfd
, prel31_offset
,
4237 &edited_contents
[out_index
* 8]);
4239 /* Code for EXIDX_CANTUNWIND. */
4240 bfd_put_32 (output_bfd
, 0x1,
4241 &edited_contents
[out_index
* 8 + 4]);
4244 add_to_offsets
-= 8;
4249 edit_node
= edit_node
->next
;
4254 /* No more edits, copy remaining entries verbatim. */
4255 elf32_tic6x_copy_exidx_entry (output_bfd
,
4256 edited_contents
+ out_index
* 8,
4257 contents
+ in_index
* 8, add_to_offsets
);
4263 if (!(sec
->flags
& SEC_EXCLUDE
) && !(sec
->flags
& SEC_NEVER_LOAD
))
4264 bfd_set_section_contents (output_bfd
, sec
->output_section
,
4266 (file_ptr
) sec
->output_offset
, sec
->size
);
4271 #define TARGET_LITTLE_SYM tic6x_elf32_le_vec
4272 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4273 #define TARGET_BIG_SYM tic6x_elf32_be_vec
4274 #define TARGET_BIG_NAME "elf32-tic6x-be"
4275 #define ELF_ARCH bfd_arch_tic6x
4276 #define ELF_TARGET_ID TIC6X_ELF_DATA
4277 #define ELF_MACHINE_CODE EM_TI_C6000
4278 #define ELF_MAXPAGESIZE 0x1000
4279 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4280 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4281 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4282 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4283 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4284 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4285 #define elf_backend_stack_align 8
4286 #define elf_backend_can_gc_sections 1
4287 #define elf_backend_default_use_rela_p 1
4288 #define elf_backend_may_use_rel_p 1
4289 #define elf_backend_may_use_rela_p 1
4290 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4291 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4292 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4293 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4294 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4295 #define elf_backend_obj_attrs_vendor "c6xabi"
4296 #define elf_backend_can_refcount 1
4297 #define elf_backend_want_got_plt 1
4298 #define elf_backend_want_dynbss 1
4299 #define elf_backend_want_dynrelro 1
4300 #define elf_backend_plt_readonly 1
4301 #define elf_backend_rela_normal 1
4302 #define elf_backend_got_header_size 8
4303 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4304 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4305 #define elf_backend_create_dynamic_sections \
4306 elf32_tic6x_create_dynamic_sections
4307 #define elf_backend_adjust_dynamic_symbol \
4308 elf32_tic6x_adjust_dynamic_symbol
4309 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4310 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4311 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4312 #define elf_backend_link_output_symbol_hook \
4313 elf32_tic6x_link_output_symbol_hook
4314 #define elf_backend_section_from_bfd_section \
4315 elf32_tic6x_section_from_bfd_section
4316 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4317 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4318 #define elf_backend_finish_dynamic_symbol \
4319 elf32_tic6x_finish_dynamic_symbol
4320 #define elf_backend_always_size_sections \
4321 elf32_tic6x_always_size_sections
4322 #define elf_backend_size_dynamic_sections \
4323 elf32_tic6x_size_dynamic_sections
4324 #define elf_backend_finish_dynamic_sections \
4325 elf32_tic6x_finish_dynamic_sections
4326 #define bfd_elf32_bfd_final_link \
4327 elf32_tic6x_final_link
4328 #define elf_backend_write_section elf32_tic6x_write_section
4329 #define elf_info_to_howto elf32_tic6x_info_to_howto
4330 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4332 #undef elf_backend_omit_section_dynsym
4333 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4334 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4336 #include "elf32-target.h"
4339 #define elf32_bed elf32_tic6x_linux_bed
4341 #undef TARGET_LITTLE_SYM
4342 #define TARGET_LITTLE_SYM tic6x_elf32_linux_le_vec
4343 #undef TARGET_LITTLE_NAME
4344 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4345 #undef TARGET_BIG_SYM
4346 #define TARGET_BIG_SYM tic6x_elf32_linux_be_vec
4347 #undef TARGET_BIG_NAME
4348 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4350 #define ELF_OSABI ELFOSABI_C6000_LINUX
4352 #include "elf32-target.h"
4355 #define elf32_bed elf32_tic6x_elf_bed
4357 #undef TARGET_LITTLE_SYM
4358 #define TARGET_LITTLE_SYM tic6x_elf32_c6000_le_vec
4359 #undef TARGET_LITTLE_NAME
4360 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4361 #undef TARGET_BIG_SYM
4362 #define TARGET_BIG_SYM tic6x_elf32_c6000_be_vec
4363 #undef TARGET_BIG_NAME
4364 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4366 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4368 #include "elf32-target.h"