/src/binutils-gdb/bfd/elf32-tic6x.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* 32-bit ELF support for TI C6X |
2 | | Copyright (C) 2010-2023 Free Software Foundation, Inc. |
3 | | Contributed by Joseph Myers <joseph@codesourcery.com> |
4 | | Bernd Schmidt <bernds@codesourcery.com> |
5 | | |
6 | | This file is part of BFD, the Binary File Descriptor library. |
7 | | |
8 | | This program is free software; you can redistribute it and/or modify |
9 | | it under the terms of the GNU General Public License as published by |
10 | | the Free Software Foundation; either version 3 of the License, or |
11 | | (at your option) any later version. |
12 | | |
13 | | This program is distributed in the hope that it will be useful, |
14 | | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | | GNU General Public License for more details. |
17 | | |
18 | | You should have received a copy of the GNU General Public License |
19 | | along with this program; if not, write to the Free Software |
20 | | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | | MA 02110-1301, USA. */ |
22 | | |
23 | | #include "sysdep.h" |
24 | | #include <limits.h> |
25 | | #include "bfd.h" |
26 | | #include "libbfd.h" |
27 | | #include "libiberty.h" |
28 | | #include "elf-bfd.h" |
29 | | #include "elf/tic6x.h" |
30 | | #include "elf32-tic6x.h" |
31 | | |
32 | 0 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0" |
33 | | |
34 | | /* DSBT binaries have a default 128K stack. */ |
35 | 0 | #define DEFAULT_STACK_SIZE 0x20000 |
36 | | |
37 | | /* The size in bytes of an entry in the procedure linkage table. */ |
38 | 0 | #define PLT_ENTRY_SIZE 24 |
39 | | |
40 | | /* TI C6X ELF linker hash table. */ |
41 | | |
42 | | struct elf32_tic6x_link_hash_table |
43 | | { |
44 | | struct elf_link_hash_table elf; |
45 | | |
46 | | /* C6X specific command line arguments. */ |
47 | | struct elf32_tic6x_params params; |
48 | | |
49 | | /* The output BFD, for convenience. */ |
50 | | bfd *obfd; |
51 | | |
52 | | /* The .dsbt section. */ |
53 | | asection *dsbt; |
54 | | }; |
55 | | |
56 | | /* Get the TI C6X ELF linker hash table from a link_info structure. */ |
57 | | |
58 | | #define elf32_tic6x_hash_table(p) \ |
59 | 0 | ((struct elf32_tic6x_link_hash_table *) ((p)->hash)) |
60 | | |
61 | | typedef enum |
62 | | { |
63 | | DELETE_EXIDX_ENTRY, |
64 | | INSERT_EXIDX_CANTUNWIND_AT_END |
65 | | } |
66 | | tic6x_unwind_edit_type; |
67 | | |
68 | | /* A (sorted) list of edits to apply to an unwind table. */ |
69 | | typedef struct tic6x_unwind_table_edit |
70 | | { |
71 | | tic6x_unwind_edit_type type; |
72 | | /* Note: we sometimes want to insert an unwind entry corresponding to a |
73 | | section different from the one we're currently writing out, so record the |
74 | | (text) section this edit relates to here. */ |
75 | | asection *linked_section; |
76 | | unsigned int index; |
77 | | struct tic6x_unwind_table_edit *next; |
78 | | } |
79 | | tic6x_unwind_table_edit; |
80 | | |
81 | | typedef struct _tic6x_elf_section_data |
82 | | { |
83 | | /* Information about mapping symbols. */ |
84 | | struct bfd_elf_section_data elf; |
85 | | /* Information about unwind tables. */ |
86 | | union |
87 | | { |
88 | | /* Unwind info attached to a text section. */ |
89 | | struct |
90 | | { |
91 | | asection *tic6x_exidx_sec; |
92 | | } text; |
93 | | |
94 | | /* Unwind info attached to an .c6xabi.exidx section. */ |
95 | | struct |
96 | | { |
97 | | tic6x_unwind_table_edit *unwind_edit_list; |
98 | | tic6x_unwind_table_edit *unwind_edit_tail; |
99 | | } exidx; |
100 | | } u; |
101 | | } |
102 | | _tic6x_elf_section_data; |
103 | | |
104 | | #define elf32_tic6x_section_data(sec) \ |
105 | 0 | ((_tic6x_elf_section_data *) elf_section_data (sec)) |
106 | | |
107 | | struct elf32_tic6x_obj_tdata |
108 | | { |
109 | | struct elf_obj_tdata root; |
110 | | |
111 | | /* Whether to use RELA relocations when generating relocations. |
112 | | This is a per-object flag to allow the assembler to generate REL |
113 | | relocations for use in linker testcases. */ |
114 | | bool use_rela_p; |
115 | | }; |
116 | | |
117 | | #define elf32_tic6x_tdata(abfd) \ |
118 | 24.5k | ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any) |
119 | | |
120 | | #define is_tic6x_elf(bfd) \ |
121 | 0 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ |
122 | 0 | && elf_tdata (bfd) != NULL \ |
123 | 0 | && elf_object_id (bfd) == TIC6X_ELF_DATA) |
124 | | |
125 | | /* C6X ELF uses two common sections. One is the usual one, and the |
126 | | other is for small objects. All the small objects are kept |
127 | | together, and then referenced via the gp pointer, which yields |
128 | | faster assembler code. This is what we use for the small common |
129 | | section. This approach is copied from ecoff.c. */ |
130 | | static asection tic6x_elf_scom_section; |
131 | | static const asymbol tic6x_elf_scom_symbol = |
132 | | GLOBAL_SYM_INIT (".scommon", &tic6x_elf_scom_section); |
133 | | static asection tic6x_elf_scom_section = |
134 | | BFD_FAKE_SECTION (tic6x_elf_scom_section, &tic6x_elf_scom_symbol, |
135 | | ".scommon", 0, SEC_IS_COMMON | SEC_SMALL_DATA); |
136 | | |
137 | | static reloc_howto_type elf32_tic6x_howto_table[] = |
138 | | { |
139 | | HOWTO (R_C6000_NONE, /* type */ |
140 | | 0, /* rightshift */ |
141 | | 0, /* size */ |
142 | | 0, /* bitsize */ |
143 | | false, /* pc_relative */ |
144 | | 0, /* bitpos */ |
145 | | complain_overflow_dont,/* complain_on_overflow */ |
146 | | bfd_elf_generic_reloc, /* special_function */ |
147 | | "R_C6000_NONE", /* name */ |
148 | | false, /* partial_inplace */ |
149 | | 0, /* src_mask */ |
150 | | 0, /* dst_mask */ |
151 | | false), /* pcrel_offset */ |
152 | | HOWTO (R_C6000_ABS32, /* type */ |
153 | | 0, /* rightshift */ |
154 | | 4, /* size */ |
155 | | 32, /* bitsize */ |
156 | | false, /* pc_relative */ |
157 | | 0, /* bitpos */ |
158 | | complain_overflow_dont,/* complain_on_overflow */ |
159 | | bfd_elf_generic_reloc, /* special_function */ |
160 | | "R_C6000_ABS32", /* name */ |
161 | | false, /* partial_inplace */ |
162 | | 0, /* src_mask */ |
163 | | 0xffffffff, /* dst_mask */ |
164 | | false), /* pcrel_offset */ |
165 | | HOWTO (R_C6000_ABS16, /* type */ |
166 | | 0, /* rightshift */ |
167 | | 2, /* size */ |
168 | | 16, /* bitsize */ |
169 | | false, /* pc_relative */ |
170 | | 0, /* bitpos */ |
171 | | complain_overflow_bitfield,/* complain_on_overflow */ |
172 | | bfd_elf_generic_reloc, /* special_function */ |
173 | | "R_C6000_ABS16", /* name */ |
174 | | false, /* partial_inplace */ |
175 | | 0, /* src_mask */ |
176 | | 0x0000ffff, /* dst_mask */ |
177 | | false), /* pcrel_offset */ |
178 | | HOWTO (R_C6000_ABS8, /* type */ |
179 | | 0, /* rightshift */ |
180 | | 1, /* size */ |
181 | | 8, /* bitsize */ |
182 | | false, /* pc_relative */ |
183 | | 0, /* bitpos */ |
184 | | complain_overflow_bitfield,/* complain_on_overflow */ |
185 | | bfd_elf_generic_reloc, /* special_function */ |
186 | | "R_C6000_ABS8", /* name */ |
187 | | false, /* partial_inplace */ |
188 | | 0, /* src_mask */ |
189 | | 0x000000ff, /* dst_mask */ |
190 | | false), /* pcrel_offset */ |
191 | | HOWTO (R_C6000_PCR_S21, /* type */ |
192 | | 2, /* rightshift */ |
193 | | 4, /* size */ |
194 | | 21, /* bitsize */ |
195 | | true, /* pc_relative */ |
196 | | 7, /* bitpos */ |
197 | | complain_overflow_signed,/* complain_on_overflow */ |
198 | | bfd_elf_generic_reloc, /* special_function */ |
199 | | "R_C6000_PCR_S21", /* name */ |
200 | | false, /* partial_inplace */ |
201 | | 0, /* src_mask */ |
202 | | 0x0fffff80, /* dst_mask */ |
203 | | true), /* pcrel_offset */ |
204 | | HOWTO (R_C6000_PCR_S12, /* type */ |
205 | | 2, /* rightshift */ |
206 | | 4, /* size */ |
207 | | 12, /* bitsize */ |
208 | | true, /* pc_relative */ |
209 | | 16, /* bitpos */ |
210 | | complain_overflow_signed,/* complain_on_overflow */ |
211 | | bfd_elf_generic_reloc, /* special_function */ |
212 | | "R_C6000_PCR_S12", /* name */ |
213 | | false, /* partial_inplace */ |
214 | | 0, /* src_mask */ |
215 | | 0x0fff0000, /* dst_mask */ |
216 | | true), /* pcrel_offset */ |
217 | | HOWTO (R_C6000_PCR_S10, /* type */ |
218 | | 2, /* rightshift */ |
219 | | 4, /* size */ |
220 | | 10, /* bitsize */ |
221 | | true, /* pc_relative */ |
222 | | 13, /* bitpos */ |
223 | | complain_overflow_signed,/* complain_on_overflow */ |
224 | | bfd_elf_generic_reloc, /* special_function */ |
225 | | "R_C6000_PCR_S10", /* name */ |
226 | | false, /* partial_inplace */ |
227 | | 0, /* src_mask */ |
228 | | 0x007fe000, /* dst_mask */ |
229 | | true), /* pcrel_offset */ |
230 | | HOWTO (R_C6000_PCR_S7, /* type */ |
231 | | 2, /* rightshift */ |
232 | | 4, /* size */ |
233 | | 7, /* bitsize */ |
234 | | true, /* pc_relative */ |
235 | | 16, /* bitpos */ |
236 | | complain_overflow_signed,/* complain_on_overflow */ |
237 | | bfd_elf_generic_reloc, /* special_function */ |
238 | | "R_C6000_PCR_S7", /* name */ |
239 | | false, /* partial_inplace */ |
240 | | 0, /* src_mask */ |
241 | | 0x007f0000, /* dst_mask */ |
242 | | true), /* pcrel_offset */ |
243 | | HOWTO (R_C6000_ABS_S16, /* type */ |
244 | | 0, /* rightshift */ |
245 | | 4, /* size */ |
246 | | 16, /* bitsize */ |
247 | | false, /* pc_relative */ |
248 | | 7, /* bitpos */ |
249 | | complain_overflow_signed,/* complain_on_overflow */ |
250 | | bfd_elf_generic_reloc, /* special_function */ |
251 | | "R_C6000_ABS_S16", /* name */ |
252 | | false, /* partial_inplace */ |
253 | | 0, /* src_mask */ |
254 | | 0x007fff80, /* dst_mask */ |
255 | | false), /* pcrel_offset */ |
256 | | HOWTO (R_C6000_ABS_L16, /* type */ |
257 | | 0, /* rightshift */ |
258 | | 4, /* size */ |
259 | | 16, /* bitsize */ |
260 | | false, /* pc_relative */ |
261 | | 7, /* bitpos */ |
262 | | complain_overflow_dont,/* complain_on_overflow */ |
263 | | bfd_elf_generic_reloc, /* special_function */ |
264 | | "R_C6000_ABS_L16", /* name */ |
265 | | false, /* partial_inplace */ |
266 | | 0, /* src_mask */ |
267 | | 0x007fff80, /* dst_mask */ |
268 | | false), /* pcrel_offset */ |
269 | | HOWTO (R_C6000_ABS_H16, /* type */ |
270 | | 16, /* rightshift */ |
271 | | 4, /* size */ |
272 | | 16, /* bitsize */ |
273 | | false, /* pc_relative */ |
274 | | 7, /* bitpos */ |
275 | | complain_overflow_dont,/* complain_on_overflow */ |
276 | | bfd_elf_generic_reloc, /* special_function */ |
277 | | "R_C6000_ABS_H16", /* name */ |
278 | | false, /* partial_inplace */ |
279 | | 0, /* src_mask */ |
280 | | 0x007fff80, /* dst_mask */ |
281 | | false), /* pcrel_offset */ |
282 | | HOWTO (R_C6000_SBR_U15_B, /* type */ |
283 | | 0, /* rightshift */ |
284 | | 4, /* size */ |
285 | | 15, /* bitsize */ |
286 | | false, /* pc_relative */ |
287 | | 8, /* bitpos */ |
288 | | complain_overflow_unsigned,/* complain_on_overflow */ |
289 | | bfd_elf_generic_reloc, /* special_function */ |
290 | | "R_C6000_SBR_U15_B", /* name */ |
291 | | false, /* partial_inplace */ |
292 | | 0, /* src_mask */ |
293 | | 0x007fff00, /* dst_mask */ |
294 | | false), /* pcrel_offset */ |
295 | | HOWTO (R_C6000_SBR_U15_H, /* type */ |
296 | | 1, /* rightshift */ |
297 | | 4, /* size */ |
298 | | 15, /* bitsize */ |
299 | | false, /* pc_relative */ |
300 | | 8, /* bitpos */ |
301 | | complain_overflow_unsigned,/* complain_on_overflow */ |
302 | | bfd_elf_generic_reloc, /* special_function */ |
303 | | "R_C6000_SBR_U15_H", /* name */ |
304 | | false, /* partial_inplace */ |
305 | | 0, /* src_mask */ |
306 | | 0x007fff00, /* dst_mask */ |
307 | | false), /* pcrel_offset */ |
308 | | HOWTO (R_C6000_SBR_U15_W, /* type */ |
309 | | 2, /* rightshift */ |
310 | | 4, /* size */ |
311 | | 15, /* bitsize */ |
312 | | false, /* pc_relative */ |
313 | | 8, /* bitpos */ |
314 | | complain_overflow_unsigned,/* complain_on_overflow */ |
315 | | bfd_elf_generic_reloc, /* special_function */ |
316 | | "R_C6000_SBR_U15_W", /* name */ |
317 | | false, /* partial_inplace */ |
318 | | 0, /* src_mask */ |
319 | | 0x007fff00, /* dst_mask */ |
320 | | false), /* pcrel_offset */ |
321 | | HOWTO (R_C6000_SBR_S16, /* type */ |
322 | | 0, /* rightshift */ |
323 | | 4, /* size */ |
324 | | 16, /* bitsize */ |
325 | | false, /* pc_relative */ |
326 | | 7, /* bitpos */ |
327 | | complain_overflow_signed,/* complain_on_overflow */ |
328 | | bfd_elf_generic_reloc, /* special_function */ |
329 | | "R_C6000_SBR_S16", /* name */ |
330 | | false, /* partial_inplace */ |
331 | | 0, /* src_mask */ |
332 | | 0x007fff80, /* dst_mask */ |
333 | | false), /* pcrel_offset */ |
334 | | HOWTO (R_C6000_SBR_L16_B, /* type */ |
335 | | 0, /* rightshift */ |
336 | | 4, /* size */ |
337 | | 16, /* bitsize */ |
338 | | false, /* pc_relative */ |
339 | | 7, /* bitpos */ |
340 | | complain_overflow_dont,/* complain_on_overflow */ |
341 | | bfd_elf_generic_reloc, /* special_function */ |
342 | | "R_C6000_SBR_L16_B", /* name */ |
343 | | false, /* partial_inplace */ |
344 | | 0, /* src_mask */ |
345 | | 0x007fff80, /* dst_mask */ |
346 | | false), /* pcrel_offset */ |
347 | | HOWTO (R_C6000_SBR_L16_H, /* type */ |
348 | | 1, /* rightshift */ |
349 | | 4, /* size */ |
350 | | 16, /* bitsize */ |
351 | | false, /* pc_relative */ |
352 | | 7, /* bitpos */ |
353 | | complain_overflow_dont,/* complain_on_overflow */ |
354 | | bfd_elf_generic_reloc, /* special_function */ |
355 | | "R_C6000_SBR_L16_H", /* name */ |
356 | | false, /* partial_inplace */ |
357 | | 0, /* src_mask */ |
358 | | 0x007fff80, /* dst_mask */ |
359 | | false), /* pcrel_offset */ |
360 | | HOWTO (R_C6000_SBR_L16_W, /* type */ |
361 | | 2, /* rightshift */ |
362 | | 4, /* size */ |
363 | | 16, /* bitsize */ |
364 | | false, /* pc_relative */ |
365 | | 7, /* bitpos */ |
366 | | complain_overflow_dont,/* complain_on_overflow */ |
367 | | bfd_elf_generic_reloc, /* special_function */ |
368 | | "R_C6000_SBR_L16_W", /* name */ |
369 | | false, /* partial_inplace */ |
370 | | 0, /* src_mask */ |
371 | | 0x007fff80, /* dst_mask */ |
372 | | false), /* pcrel_offset */ |
373 | | HOWTO (R_C6000_SBR_H16_B, /* type */ |
374 | | 16, /* rightshift */ |
375 | | 4, /* size */ |
376 | | 16, /* bitsize */ |
377 | | false, /* pc_relative */ |
378 | | 7, /* bitpos */ |
379 | | complain_overflow_dont,/* complain_on_overflow */ |
380 | | bfd_elf_generic_reloc, /* special_function */ |
381 | | "R_C6000_SBR_H16_B", /* name */ |
382 | | false, /* partial_inplace */ |
383 | | 0, /* src_mask */ |
384 | | 0x007fff80, /* dst_mask */ |
385 | | false), /* pcrel_offset */ |
386 | | HOWTO (R_C6000_SBR_H16_H, /* type */ |
387 | | 17, /* rightshift */ |
388 | | 4, /* size */ |
389 | | 16, /* bitsize */ |
390 | | false, /* pc_relative */ |
391 | | 7, /* bitpos */ |
392 | | complain_overflow_dont,/* complain_on_overflow */ |
393 | | bfd_elf_generic_reloc, /* special_function */ |
394 | | "R_C6000_SBR_H16_H", /* name */ |
395 | | false, /* partial_inplace */ |
396 | | 0, /* src_mask */ |
397 | | 0x007fff80, /* dst_mask */ |
398 | | false), /* pcrel_offset */ |
399 | | HOWTO (R_C6000_SBR_H16_W, /* type */ |
400 | | 18, /* rightshift */ |
401 | | 4, /* size */ |
402 | | 16, /* bitsize */ |
403 | | false, /* pc_relative */ |
404 | | 7, /* bitpos */ |
405 | | complain_overflow_dont,/* complain_on_overflow */ |
406 | | bfd_elf_generic_reloc, /* special_function */ |
407 | | "R_C6000_SBR_H16_W", /* name */ |
408 | | false, /* partial_inplace */ |
409 | | 0, /* src_mask */ |
410 | | 0x007fff80, /* dst_mask */ |
411 | | false), /* pcrel_offset */ |
412 | | HOWTO (R_C6000_SBR_GOT_U15_W, /* type */ |
413 | | 2, /* rightshift */ |
414 | | 4, /* size */ |
415 | | 15, /* bitsize */ |
416 | | false, /* pc_relative */ |
417 | | 8, /* bitpos */ |
418 | | complain_overflow_unsigned,/* complain_on_overflow */ |
419 | | bfd_elf_generic_reloc, /* special_function */ |
420 | | "R_C6000_SBR_GOT_U15_W",/* name */ |
421 | | false, /* partial_inplace */ |
422 | | 0, /* src_mask */ |
423 | | 0x007fff00, /* dst_mask */ |
424 | | false), /* pcrel_offset */ |
425 | | HOWTO (R_C6000_SBR_GOT_L16_W, /* type */ |
426 | | 2, /* rightshift */ |
427 | | 4, /* size */ |
428 | | 16, /* bitsize */ |
429 | | false, /* pc_relative */ |
430 | | 7, /* bitpos */ |
431 | | complain_overflow_dont,/* complain_on_overflow */ |
432 | | bfd_elf_generic_reloc, /* special_function */ |
433 | | "R_C6000_SBR_GOT_L16_W",/* name */ |
434 | | false, /* partial_inplace */ |
435 | | 0, /* src_mask */ |
436 | | 0x007fff80, /* dst_mask */ |
437 | | false), /* pcrel_offset */ |
438 | | HOWTO (R_C6000_SBR_GOT_H16_W, /* type */ |
439 | | 18, /* rightshift */ |
440 | | 4, /* size */ |
441 | | 16, /* bitsize */ |
442 | | false, /* pc_relative */ |
443 | | 7, /* bitpos */ |
444 | | complain_overflow_dont,/* complain_on_overflow */ |
445 | | bfd_elf_generic_reloc, /* special_function */ |
446 | | "R_C6000_SBR_GOT_H16_W",/* name */ |
447 | | false, /* partial_inplace */ |
448 | | 0, /* src_mask */ |
449 | | 0x007fff80, /* dst_mask */ |
450 | | false), /* pcrel_offset */ |
451 | | HOWTO (R_C6000_DSBT_INDEX, /* type */ |
452 | | 0, /* rightshift */ |
453 | | 4, /* size */ |
454 | | 15, /* bitsize */ |
455 | | false, /* pc_relative */ |
456 | | 8, /* bitpos */ |
457 | | complain_overflow_unsigned,/* complain_on_overflow */ |
458 | | bfd_elf_generic_reloc, /* special_function */ |
459 | | "R_C6000_DSBT_INDEX", /* name */ |
460 | | false, /* partial_inplace */ |
461 | | 0, /* src_mask */ |
462 | | 0x007fff00, /* dst_mask */ |
463 | | false), /* pcrel_offset */ |
464 | | HOWTO (R_C6000_PREL31, /* type */ |
465 | | 1, /* rightshift */ |
466 | | 4, /* size */ |
467 | | 31, /* bitsize */ |
468 | | true, /* pc_relative */ |
469 | | 0, /* bitpos */ |
470 | | complain_overflow_dont,/* complain_on_overflow */ |
471 | | bfd_elf_generic_reloc, /* special_function */ |
472 | | "R_C6000_PREL31", /* name */ |
473 | | false, /* partial_inplace */ |
474 | | 0, /* src_mask */ |
475 | | 0x7fffffff, /* dst_mask */ |
476 | | true), /* pcrel_offset */ |
477 | | HOWTO (R_C6000_COPY, /* type */ |
478 | | 0, /* rightshift */ |
479 | | 4, /* size */ |
480 | | 32, /* bitsize */ |
481 | | false, /* pc_relative */ |
482 | | 0, /* bitpos */ |
483 | | complain_overflow_dont,/* complain_on_overflow */ |
484 | | bfd_elf_generic_reloc, /* special_function */ |
485 | | "R_C6000_COPY", /* name */ |
486 | | false, /* partial_inplace */ |
487 | | 0, /* src_mask */ |
488 | | 0xffffffff, /* dst_mask */ |
489 | | false), /* pcrel_offset */ |
490 | | HOWTO (R_C6000_JUMP_SLOT, /* type */ |
491 | | 0, /* rightshift */ |
492 | | 4, /* size */ |
493 | | 32, /* bitsize */ |
494 | | false, /* pc_relative */ |
495 | | 0, /* bitpos */ |
496 | | complain_overflow_dont,/* complain_on_overflow */ |
497 | | bfd_elf_generic_reloc, /* special_function */ |
498 | | "R_C6000_JUMP_SLOT", /* name */ |
499 | | false, /* partial_inplace */ |
500 | | 0, /* src_mask */ |
501 | | 0xffffffff, /* dst_mask */ |
502 | | false), /* pcrel_offset */ |
503 | | HOWTO (R_C6000_EHTYPE, /* type */ |
504 | | 0, /* rightshift */ |
505 | | 4, /* size */ |
506 | | 32, /* bitsize */ |
507 | | false, /* pc_relative */ |
508 | | 0, /* bitpos */ |
509 | | complain_overflow_dont,/* complain_on_overflow */ |
510 | | bfd_elf_generic_reloc, /* special_function */ |
511 | | "R_C6000_EHTYPE", /* name */ |
512 | | false, /* partial_inplace */ |
513 | | 0, /* src_mask */ |
514 | | 0xffffffff, /* dst_mask */ |
515 | | false), /* pcrel_offset */ |
516 | | HOWTO (R_C6000_PCR_H16, /* type */ |
517 | | 16, /* rightshift */ |
518 | | 4, /* size */ |
519 | | 16, /* bitsize */ |
520 | | true, /* pc_relative */ |
521 | | 7, /* bitpos */ |
522 | | complain_overflow_dont,/* complain_on_overflow */ |
523 | | bfd_elf_generic_reloc, /* special_function */ |
524 | | "R_C6000_PCR_H16", /* name */ |
525 | | false, /* partial_inplace */ |
526 | | 0, /* src_mask */ |
527 | | 0x007fff80, /* dst_mask */ |
528 | | true), /* pcrel_offset */ |
529 | | HOWTO (R_C6000_PCR_L16, /* type */ |
530 | | 0, /* rightshift */ |
531 | | 4, /* size */ |
532 | | 16, /* bitsize */ |
533 | | true, /* pc_relative */ |
534 | | 7, /* bitpos */ |
535 | | complain_overflow_dont,/* complain_on_overflow */ |
536 | | bfd_elf_generic_reloc, /* special_function */ |
537 | | "R_C6000_PCR_L16", /* name */ |
538 | | false, /* partial_inplace */ |
539 | | 0, /* src_mask */ |
540 | | 0x007fff80, /* dst_mask */ |
541 | | true), /* pcrel_offset */ |
542 | | EMPTY_HOWTO (31), |
543 | | EMPTY_HOWTO (32), |
544 | | EMPTY_HOWTO (33), |
545 | | EMPTY_HOWTO (34), |
546 | | EMPTY_HOWTO (35), |
547 | | EMPTY_HOWTO (36), |
548 | | EMPTY_HOWTO (37), |
549 | | EMPTY_HOWTO (38), |
550 | | EMPTY_HOWTO (39), |
551 | | EMPTY_HOWTO (40), |
552 | | EMPTY_HOWTO (41), |
553 | | EMPTY_HOWTO (42), |
554 | | EMPTY_HOWTO (43), |
555 | | EMPTY_HOWTO (44), |
556 | | EMPTY_HOWTO (45), |
557 | | EMPTY_HOWTO (46), |
558 | | EMPTY_HOWTO (47), |
559 | | EMPTY_HOWTO (48), |
560 | | EMPTY_HOWTO (49), |
561 | | EMPTY_HOWTO (50), |
562 | | EMPTY_HOWTO (51), |
563 | | EMPTY_HOWTO (52), |
564 | | EMPTY_HOWTO (53), |
565 | | EMPTY_HOWTO (54), |
566 | | EMPTY_HOWTO (55), |
567 | | EMPTY_HOWTO (56), |
568 | | EMPTY_HOWTO (57), |
569 | | EMPTY_HOWTO (58), |
570 | | EMPTY_HOWTO (59), |
571 | | EMPTY_HOWTO (60), |
572 | | EMPTY_HOWTO (61), |
573 | | EMPTY_HOWTO (62), |
574 | | EMPTY_HOWTO (63), |
575 | | EMPTY_HOWTO (64), |
576 | | EMPTY_HOWTO (65), |
577 | | EMPTY_HOWTO (66), |
578 | | EMPTY_HOWTO (67), |
579 | | EMPTY_HOWTO (68), |
580 | | EMPTY_HOWTO (69), |
581 | | EMPTY_HOWTO (70), |
582 | | EMPTY_HOWTO (71), |
583 | | EMPTY_HOWTO (72), |
584 | | EMPTY_HOWTO (73), |
585 | | EMPTY_HOWTO (74), |
586 | | EMPTY_HOWTO (75), |
587 | | EMPTY_HOWTO (76), |
588 | | EMPTY_HOWTO (77), |
589 | | EMPTY_HOWTO (78), |
590 | | EMPTY_HOWTO (79), |
591 | | EMPTY_HOWTO (80), |
592 | | EMPTY_HOWTO (81), |
593 | | EMPTY_HOWTO (82), |
594 | | EMPTY_HOWTO (83), |
595 | | EMPTY_HOWTO (84), |
596 | | EMPTY_HOWTO (85), |
597 | | EMPTY_HOWTO (86), |
598 | | EMPTY_HOWTO (87), |
599 | | EMPTY_HOWTO (88), |
600 | | EMPTY_HOWTO (89), |
601 | | EMPTY_HOWTO (90), |
602 | | EMPTY_HOWTO (91), |
603 | | EMPTY_HOWTO (92), |
604 | | EMPTY_HOWTO (93), |
605 | | EMPTY_HOWTO (94), |
606 | | EMPTY_HOWTO (95), |
607 | | EMPTY_HOWTO (96), |
608 | | EMPTY_HOWTO (97), |
609 | | EMPTY_HOWTO (98), |
610 | | EMPTY_HOWTO (99), |
611 | | EMPTY_HOWTO (100), |
612 | | EMPTY_HOWTO (101), |
613 | | EMPTY_HOWTO (102), |
614 | | EMPTY_HOWTO (103), |
615 | | EMPTY_HOWTO (104), |
616 | | EMPTY_HOWTO (105), |
617 | | EMPTY_HOWTO (106), |
618 | | EMPTY_HOWTO (107), |
619 | | EMPTY_HOWTO (108), |
620 | | EMPTY_HOWTO (109), |
621 | | EMPTY_HOWTO (110), |
622 | | EMPTY_HOWTO (111), |
623 | | EMPTY_HOWTO (112), |
624 | | EMPTY_HOWTO (113), |
625 | | EMPTY_HOWTO (114), |
626 | | EMPTY_HOWTO (115), |
627 | | EMPTY_HOWTO (116), |
628 | | EMPTY_HOWTO (117), |
629 | | EMPTY_HOWTO (118), |
630 | | EMPTY_HOWTO (119), |
631 | | EMPTY_HOWTO (120), |
632 | | EMPTY_HOWTO (121), |
633 | | EMPTY_HOWTO (122), |
634 | | EMPTY_HOWTO (123), |
635 | | EMPTY_HOWTO (124), |
636 | | EMPTY_HOWTO (125), |
637 | | EMPTY_HOWTO (126), |
638 | | EMPTY_HOWTO (127), |
639 | | EMPTY_HOWTO (128), |
640 | | EMPTY_HOWTO (129), |
641 | | EMPTY_HOWTO (130), |
642 | | EMPTY_HOWTO (131), |
643 | | EMPTY_HOWTO (132), |
644 | | EMPTY_HOWTO (133), |
645 | | EMPTY_HOWTO (134), |
646 | | EMPTY_HOWTO (135), |
647 | | EMPTY_HOWTO (136), |
648 | | EMPTY_HOWTO (137), |
649 | | EMPTY_HOWTO (138), |
650 | | EMPTY_HOWTO (139), |
651 | | EMPTY_HOWTO (140), |
652 | | EMPTY_HOWTO (141), |
653 | | EMPTY_HOWTO (142), |
654 | | EMPTY_HOWTO (143), |
655 | | EMPTY_HOWTO (144), |
656 | | EMPTY_HOWTO (145), |
657 | | EMPTY_HOWTO (146), |
658 | | EMPTY_HOWTO (147), |
659 | | EMPTY_HOWTO (148), |
660 | | EMPTY_HOWTO (149), |
661 | | EMPTY_HOWTO (150), |
662 | | EMPTY_HOWTO (151), |
663 | | EMPTY_HOWTO (152), |
664 | | EMPTY_HOWTO (153), |
665 | | EMPTY_HOWTO (154), |
666 | | EMPTY_HOWTO (155), |
667 | | EMPTY_HOWTO (156), |
668 | | EMPTY_HOWTO (157), |
669 | | EMPTY_HOWTO (158), |
670 | | EMPTY_HOWTO (159), |
671 | | EMPTY_HOWTO (160), |
672 | | EMPTY_HOWTO (161), |
673 | | EMPTY_HOWTO (162), |
674 | | EMPTY_HOWTO (163), |
675 | | EMPTY_HOWTO (164), |
676 | | EMPTY_HOWTO (165), |
677 | | EMPTY_HOWTO (166), |
678 | | EMPTY_HOWTO (167), |
679 | | EMPTY_HOWTO (168), |
680 | | EMPTY_HOWTO (169), |
681 | | EMPTY_HOWTO (170), |
682 | | EMPTY_HOWTO (171), |
683 | | EMPTY_HOWTO (172), |
684 | | EMPTY_HOWTO (173), |
685 | | EMPTY_HOWTO (174), |
686 | | EMPTY_HOWTO (175), |
687 | | EMPTY_HOWTO (176), |
688 | | EMPTY_HOWTO (177), |
689 | | EMPTY_HOWTO (178), |
690 | | EMPTY_HOWTO (179), |
691 | | EMPTY_HOWTO (180), |
692 | | EMPTY_HOWTO (181), |
693 | | EMPTY_HOWTO (182), |
694 | | EMPTY_HOWTO (183), |
695 | | EMPTY_HOWTO (184), |
696 | | EMPTY_HOWTO (185), |
697 | | EMPTY_HOWTO (186), |
698 | | EMPTY_HOWTO (187), |
699 | | EMPTY_HOWTO (188), |
700 | | EMPTY_HOWTO (189), |
701 | | EMPTY_HOWTO (190), |
702 | | EMPTY_HOWTO (191), |
703 | | EMPTY_HOWTO (192), |
704 | | EMPTY_HOWTO (193), |
705 | | EMPTY_HOWTO (194), |
706 | | EMPTY_HOWTO (195), |
707 | | EMPTY_HOWTO (196), |
708 | | EMPTY_HOWTO (197), |
709 | | EMPTY_HOWTO (198), |
710 | | EMPTY_HOWTO (199), |
711 | | EMPTY_HOWTO (200), |
712 | | EMPTY_HOWTO (201), |
713 | | EMPTY_HOWTO (202), |
714 | | EMPTY_HOWTO (203), |
715 | | EMPTY_HOWTO (204), |
716 | | EMPTY_HOWTO (205), |
717 | | EMPTY_HOWTO (206), |
718 | | EMPTY_HOWTO (207), |
719 | | EMPTY_HOWTO (208), |
720 | | EMPTY_HOWTO (209), |
721 | | EMPTY_HOWTO (210), |
722 | | EMPTY_HOWTO (211), |
723 | | EMPTY_HOWTO (212), |
724 | | EMPTY_HOWTO (213), |
725 | | EMPTY_HOWTO (214), |
726 | | EMPTY_HOWTO (215), |
727 | | EMPTY_HOWTO (216), |
728 | | EMPTY_HOWTO (217), |
729 | | EMPTY_HOWTO (218), |
730 | | EMPTY_HOWTO (219), |
731 | | EMPTY_HOWTO (220), |
732 | | EMPTY_HOWTO (221), |
733 | | EMPTY_HOWTO (222), |
734 | | EMPTY_HOWTO (223), |
735 | | EMPTY_HOWTO (224), |
736 | | EMPTY_HOWTO (225), |
737 | | EMPTY_HOWTO (226), |
738 | | EMPTY_HOWTO (227), |
739 | | EMPTY_HOWTO (228), |
740 | | EMPTY_HOWTO (229), |
741 | | EMPTY_HOWTO (230), |
742 | | EMPTY_HOWTO (231), |
743 | | EMPTY_HOWTO (232), |
744 | | EMPTY_HOWTO (233), |
745 | | EMPTY_HOWTO (234), |
746 | | EMPTY_HOWTO (235), |
747 | | EMPTY_HOWTO (236), |
748 | | EMPTY_HOWTO (237), |
749 | | EMPTY_HOWTO (238), |
750 | | EMPTY_HOWTO (239), |
751 | | EMPTY_HOWTO (240), |
752 | | EMPTY_HOWTO (241), |
753 | | EMPTY_HOWTO (242), |
754 | | EMPTY_HOWTO (243), |
755 | | EMPTY_HOWTO (244), |
756 | | EMPTY_HOWTO (245), |
757 | | EMPTY_HOWTO (246), |
758 | | EMPTY_HOWTO (247), |
759 | | EMPTY_HOWTO (248), |
760 | | EMPTY_HOWTO (249), |
761 | | EMPTY_HOWTO (250), |
762 | | EMPTY_HOWTO (251), |
763 | | EMPTY_HOWTO (252), |
764 | | HOWTO (R_C6000_ALIGN, /* type */ |
765 | | 0, /* rightshift */ |
766 | | 0, /* size */ |
767 | | 0, /* bitsize */ |
768 | | false, /* pc_relative */ |
769 | | 0, /* bitpos */ |
770 | | complain_overflow_dont,/* complain_on_overflow */ |
771 | | bfd_elf_generic_reloc, /* special_function */ |
772 | | "R_C6000_ALIGN", /* name */ |
773 | | false, /* partial_inplace */ |
774 | | 0, /* src_mask */ |
775 | | 0, /* dst_mask */ |
776 | | false), /* pcrel_offset */ |
777 | | HOWTO (R_C6000_FPHEAD, /* type */ |
778 | | 0, /* rightshift */ |
779 | | 0, /* size */ |
780 | | 0, /* bitsize */ |
781 | | false, /* pc_relative */ |
782 | | 0, /* bitpos */ |
783 | | complain_overflow_dont,/* complain_on_overflow */ |
784 | | bfd_elf_generic_reloc, /* special_function */ |
785 | | "R_C6000_FPHEAD", /* name */ |
786 | | false, /* partial_inplace */ |
787 | | 0, /* src_mask */ |
788 | | 0, /* dst_mask */ |
789 | | false), /* pcrel_offset */ |
790 | | HOWTO (R_C6000_NOCMP, /* type */ |
791 | | 0, /* rightshift */ |
792 | | 0, /* size */ |
793 | | 0, /* bitsize */ |
794 | | false, /* pc_relative */ |
795 | | 0, /* bitpos */ |
796 | | complain_overflow_dont,/* complain_on_overflow */ |
797 | | bfd_elf_generic_reloc, /* special_function */ |
798 | | "R_C6000_NOCMP", /* name */ |
799 | | false, /* partial_inplace */ |
800 | | 0, /* src_mask */ |
801 | | 0, /* dst_mask */ |
802 | | false) /* pcrel_offset */ |
803 | | }; |
804 | | |
805 | | static reloc_howto_type elf32_tic6x_howto_table_rel[] = |
806 | | { |
807 | | HOWTO (R_C6000_NONE, /* type */ |
808 | | 0, /* rightshift */ |
809 | | 0, /* size */ |
810 | | 0, /* bitsize */ |
811 | | false, /* pc_relative */ |
812 | | 0, /* bitpos */ |
813 | | complain_overflow_dont,/* complain_on_overflow */ |
814 | | bfd_elf_generic_reloc, /* special_function */ |
815 | | "R_C6000_NONE", /* name */ |
816 | | true, /* partial_inplace */ |
817 | | 0, /* src_mask */ |
818 | | 0, /* dst_mask */ |
819 | | false), /* pcrel_offset */ |
820 | | HOWTO (R_C6000_ABS32, /* type */ |
821 | | 0, /* rightshift */ |
822 | | 4, /* size */ |
823 | | 32, /* bitsize */ |
824 | | false, /* pc_relative */ |
825 | | 0, /* bitpos */ |
826 | | complain_overflow_dont,/* complain_on_overflow */ |
827 | | bfd_elf_generic_reloc, /* special_function */ |
828 | | "R_C6000_ABS32", /* name */ |
829 | | true, /* partial_inplace */ |
830 | | 0xffffffff, /* src_mask */ |
831 | | 0xffffffff, /* dst_mask */ |
832 | | false), /* pcrel_offset */ |
833 | | HOWTO (R_C6000_ABS16, /* type */ |
834 | | 0, /* rightshift */ |
835 | | 2, /* size */ |
836 | | 16, /* bitsize */ |
837 | | false, /* pc_relative */ |
838 | | 0, /* bitpos */ |
839 | | complain_overflow_bitfield,/* complain_on_overflow */ |
840 | | bfd_elf_generic_reloc, /* special_function */ |
841 | | "R_C6000_ABS16", /* name */ |
842 | | true, /* partial_inplace */ |
843 | | 0x0000ffff, /* src_mask */ |
844 | | 0x0000ffff, /* dst_mask */ |
845 | | false), /* pcrel_offset */ |
846 | | HOWTO (R_C6000_ABS8, /* type */ |
847 | | 0, /* rightshift */ |
848 | | 1, /* size */ |
849 | | 8, /* bitsize */ |
850 | | false, /* pc_relative */ |
851 | | 0, /* bitpos */ |
852 | | complain_overflow_bitfield,/* complain_on_overflow */ |
853 | | bfd_elf_generic_reloc, /* special_function */ |
854 | | "R_C6000_ABS8", /* name */ |
855 | | true, /* partial_inplace */ |
856 | | 0x000000ff, /* src_mask */ |
857 | | 0x000000ff, /* dst_mask */ |
858 | | false), /* pcrel_offset */ |
859 | | HOWTO (R_C6000_PCR_S21, /* type */ |
860 | | 2, /* rightshift */ |
861 | | 4, /* size */ |
862 | | 21, /* bitsize */ |
863 | | true, /* pc_relative */ |
864 | | 7, /* bitpos */ |
865 | | complain_overflow_signed,/* complain_on_overflow */ |
866 | | bfd_elf_generic_reloc, /* special_function */ |
867 | | "R_C6000_PCR_S21", /* name */ |
868 | | true, /* partial_inplace */ |
869 | | 0x0fffff80, /* src_mask */ |
870 | | 0x0fffff80, /* dst_mask */ |
871 | | true), /* pcrel_offset */ |
872 | | HOWTO (R_C6000_PCR_S12, /* type */ |
873 | | 2, /* rightshift */ |
874 | | 4, /* size */ |
875 | | 12, /* bitsize */ |
876 | | true, /* pc_relative */ |
877 | | 16, /* bitpos */ |
878 | | complain_overflow_signed,/* complain_on_overflow */ |
879 | | bfd_elf_generic_reloc, /* special_function */ |
880 | | "R_C6000_PCR_S12", /* name */ |
881 | | true, /* partial_inplace */ |
882 | | 0x0fff0000, /* src_mask */ |
883 | | 0x0fff0000, /* dst_mask */ |
884 | | true), /* pcrel_offset */ |
885 | | HOWTO (R_C6000_PCR_S10, /* type */ |
886 | | 2, /* rightshift */ |
887 | | 4, /* size */ |
888 | | 10, /* bitsize */ |
889 | | true, /* pc_relative */ |
890 | | 13, /* bitpos */ |
891 | | complain_overflow_signed,/* complain_on_overflow */ |
892 | | bfd_elf_generic_reloc, /* special_function */ |
893 | | "R_C6000_PCR_S10", /* name */ |
894 | | true, /* partial_inplace */ |
895 | | 0x007fe000, /* src_mask */ |
896 | | 0x007fe000, /* dst_mask */ |
897 | | true), /* pcrel_offset */ |
898 | | HOWTO (R_C6000_PCR_S7, /* type */ |
899 | | 2, /* rightshift */ |
900 | | 4, /* size */ |
901 | | 7, /* bitsize */ |
902 | | true, /* pc_relative */ |
903 | | 16, /* bitpos */ |
904 | | complain_overflow_signed,/* complain_on_overflow */ |
905 | | bfd_elf_generic_reloc, /* special_function */ |
906 | | "R_C6000_PCR_S7", /* name */ |
907 | | true, /* partial_inplace */ |
908 | | 0x007f0000, /* src_mask */ |
909 | | 0x007f0000, /* dst_mask */ |
910 | | true), /* pcrel_offset */ |
911 | | HOWTO (R_C6000_ABS_S16, /* type */ |
912 | | 0, /* rightshift */ |
913 | | 4, /* size */ |
914 | | 16, /* bitsize */ |
915 | | false, /* pc_relative */ |
916 | | 7, /* bitpos */ |
917 | | complain_overflow_signed,/* complain_on_overflow */ |
918 | | bfd_elf_generic_reloc, /* special_function */ |
919 | | "R_C6000_ABS_S16", /* name */ |
920 | | true, /* partial_inplace */ |
921 | | 0x007fff80, /* src_mask */ |
922 | | 0x007fff80, /* dst_mask */ |
923 | | false), /* pcrel_offset */ |
924 | | HOWTO (R_C6000_ABS_L16, /* type */ |
925 | | 0, /* rightshift */ |
926 | | 4, /* size */ |
927 | | 16, /* bitsize */ |
928 | | false, /* pc_relative */ |
929 | | 7, /* bitpos */ |
930 | | complain_overflow_dont,/* complain_on_overflow */ |
931 | | bfd_elf_generic_reloc, /* special_function */ |
932 | | "R_C6000_ABS_L16", /* name */ |
933 | | true, /* partial_inplace */ |
934 | | 0x007fff80, /* src_mask */ |
935 | | 0x007fff80, /* dst_mask */ |
936 | | false), /* pcrel_offset */ |
937 | | EMPTY_HOWTO (R_C6000_ABS_H16), |
938 | | HOWTO (R_C6000_SBR_U15_B, /* type */ |
939 | | 0, /* rightshift */ |
940 | | 4, /* size */ |
941 | | 15, /* bitsize */ |
942 | | false, /* pc_relative */ |
943 | | 8, /* bitpos */ |
944 | | complain_overflow_unsigned,/* complain_on_overflow */ |
945 | | bfd_elf_generic_reloc, /* special_function */ |
946 | | "R_C6000_SBR_U15_B", /* name */ |
947 | | true, /* partial_inplace */ |
948 | | 0x007fff00, /* src_mask */ |
949 | | 0x007fff00, /* dst_mask */ |
950 | | false), /* pcrel_offset */ |
951 | | HOWTO (R_C6000_SBR_U15_H, /* type */ |
952 | | 1, /* rightshift */ |
953 | | 4, /* size */ |
954 | | 15, /* bitsize */ |
955 | | false, /* pc_relative */ |
956 | | 8, /* bitpos */ |
957 | | complain_overflow_unsigned,/* complain_on_overflow */ |
958 | | bfd_elf_generic_reloc, /* special_function */ |
959 | | "R_C6000_SBR_U15_H", /* name */ |
960 | | true, /* partial_inplace */ |
961 | | 0x007fff00, /* src_mask */ |
962 | | 0x007fff00, /* dst_mask */ |
963 | | false), /* pcrel_offset */ |
964 | | HOWTO (R_C6000_SBR_U15_W, /* type */ |
965 | | 2, /* rightshift */ |
966 | | 4, /* size */ |
967 | | 15, /* bitsize */ |
968 | | false, /* pc_relative */ |
969 | | 8, /* bitpos */ |
970 | | complain_overflow_unsigned,/* complain_on_overflow */ |
971 | | bfd_elf_generic_reloc, /* special_function */ |
972 | | "R_C6000_SBR_U15_W", /* name */ |
973 | | true, /* partial_inplace */ |
974 | | 0x007fff00, /* src_mask */ |
975 | | 0x007fff00, /* dst_mask */ |
976 | | false), /* pcrel_offset */ |
977 | | HOWTO (R_C6000_SBR_S16, /* type */ |
978 | | 0, /* rightshift */ |
979 | | 4, /* size */ |
980 | | 16, /* bitsize */ |
981 | | false, /* pc_relative */ |
982 | | 7, /* bitpos */ |
983 | | complain_overflow_signed,/* complain_on_overflow */ |
984 | | bfd_elf_generic_reloc, /* special_function */ |
985 | | "R_C6000_SBR_S16", /* name */ |
986 | | true, /* partial_inplace */ |
987 | | 0x007fff80, /* src_mask */ |
988 | | 0x007fff80, /* dst_mask */ |
989 | | false), /* pcrel_offset */ |
990 | | HOWTO (R_C6000_SBR_L16_B, /* type */ |
991 | | 0, /* rightshift */ |
992 | | 4, /* size */ |
993 | | 16, /* bitsize */ |
994 | | false, /* pc_relative */ |
995 | | 7, /* bitpos */ |
996 | | complain_overflow_dont,/* complain_on_overflow */ |
997 | | bfd_elf_generic_reloc, /* special_function */ |
998 | | "R_C6000_SBR_L16_B", /* name */ |
999 | | true, /* partial_inplace */ |
1000 | | 0x007fff80, /* src_mask */ |
1001 | | 0x007fff80, /* dst_mask */ |
1002 | | false), /* pcrel_offset */ |
1003 | | HOWTO (R_C6000_SBR_L16_H, /* type */ |
1004 | | 1, /* rightshift */ |
1005 | | 4, /* size */ |
1006 | | 16, /* bitsize */ |
1007 | | false, /* pc_relative */ |
1008 | | 7, /* bitpos */ |
1009 | | complain_overflow_dont,/* complain_on_overflow */ |
1010 | | bfd_elf_generic_reloc, /* special_function */ |
1011 | | "R_C6000_SBR_L16_H", /* name */ |
1012 | | true, /* partial_inplace */ |
1013 | | 0x007fff80, /* src_mask */ |
1014 | | 0x007fff80, /* dst_mask */ |
1015 | | false), /* pcrel_offset */ |
1016 | | HOWTO (R_C6000_SBR_L16_W, /* type */ |
1017 | | 2, /* rightshift */ |
1018 | | 4, /* size */ |
1019 | | 16, /* bitsize */ |
1020 | | false, /* pc_relative */ |
1021 | | 7, /* bitpos */ |
1022 | | complain_overflow_dont,/* complain_on_overflow */ |
1023 | | bfd_elf_generic_reloc, /* special_function */ |
1024 | | "R_C6000_SBR_L16_W", /* name */ |
1025 | | true, /* partial_inplace */ |
1026 | | 0x007fff80, /* src_mask */ |
1027 | | 0x007fff80, /* dst_mask */ |
1028 | | false), /* pcrel_offset */ |
1029 | | EMPTY_HOWTO (R_C6000_SBR_H16_B), |
1030 | | EMPTY_HOWTO (R_C6000_SBR_H16_H), |
1031 | | EMPTY_HOWTO (R_C6000_SBR_H16_W), |
1032 | | HOWTO (R_C6000_SBR_GOT_U15_W, /* type */ |
1033 | | 2, /* rightshift */ |
1034 | | 4, /* size */ |
1035 | | 15, /* bitsize */ |
1036 | | false, /* pc_relative */ |
1037 | | 8, /* bitpos */ |
1038 | | complain_overflow_unsigned,/* complain_on_overflow */ |
1039 | | bfd_elf_generic_reloc, /* special_function */ |
1040 | | "R_C6000_SBR_GOT_U15_W",/* name */ |
1041 | | true, /* partial_inplace */ |
1042 | | 0x007fff00, /* src_mask */ |
1043 | | 0x007fff00, /* dst_mask */ |
1044 | | false), /* pcrel_offset */ |
1045 | | HOWTO (R_C6000_SBR_GOT_L16_W, /* type */ |
1046 | | 2, /* rightshift */ |
1047 | | 4, /* size */ |
1048 | | 16, /* bitsize */ |
1049 | | false, /* pc_relative */ |
1050 | | 7, /* bitpos */ |
1051 | | complain_overflow_dont,/* complain_on_overflow */ |
1052 | | bfd_elf_generic_reloc, /* special_function */ |
1053 | | "R_C6000_SBR_GOT_L16_W",/* name */ |
1054 | | true, /* partial_inplace */ |
1055 | | 0x007fff80, /* src_mask */ |
1056 | | 0x007fff80, /* dst_mask */ |
1057 | | false), /* pcrel_offset */ |
1058 | | EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W), |
1059 | | HOWTO (R_C6000_DSBT_INDEX, /* type */ |
1060 | | 0, /* rightshift */ |
1061 | | 4, /* size */ |
1062 | | 15, /* bitsize */ |
1063 | | false, /* pc_relative */ |
1064 | | 8, /* bitpos */ |
1065 | | complain_overflow_unsigned,/* complain_on_overflow */ |
1066 | | bfd_elf_generic_reloc, /* special_function */ |
1067 | | "R_C6000_DSBT_INDEX", /* name */ |
1068 | | true, /* partial_inplace */ |
1069 | | 0, /* src_mask */ |
1070 | | 0x007fff00, /* dst_mask */ |
1071 | | false), /* pcrel_offset */ |
1072 | | HOWTO (R_C6000_PREL31, /* type */ |
1073 | | 1, /* rightshift */ |
1074 | | 4, /* size */ |
1075 | | 31, /* bitsize */ |
1076 | | true, /* pc_relative */ |
1077 | | 0, /* bitpos */ |
1078 | | complain_overflow_dont,/* complain_on_overflow */ |
1079 | | bfd_elf_generic_reloc, /* special_function */ |
1080 | | "R_C6000_PREL31", /* name */ |
1081 | | true, /* partial_inplace */ |
1082 | | 0, /* src_mask */ |
1083 | | 0x7fffffff, /* dst_mask */ |
1084 | | true), /* pcrel_offset */ |
1085 | | HOWTO (R_C6000_COPY, /* type */ |
1086 | | 0, /* rightshift */ |
1087 | | 4, /* size */ |
1088 | | 32, /* bitsize */ |
1089 | | false, /* pc_relative */ |
1090 | | 0, /* bitpos */ |
1091 | | complain_overflow_dont,/* complain_on_overflow */ |
1092 | | bfd_elf_generic_reloc, /* special_function */ |
1093 | | "R_C6000_COPY", /* name */ |
1094 | | true, /* partial_inplace */ |
1095 | | 0, /* src_mask */ |
1096 | | 0xffffffff, /* dst_mask */ |
1097 | | false), /* pcrel_offset */ |
1098 | | HOWTO (R_C6000_JUMP_SLOT, /* type */ |
1099 | | 0, /* rightshift */ |
1100 | | 4, /* size */ |
1101 | | 32, /* bitsize */ |
1102 | | false, /* pc_relative */ |
1103 | | 0, /* bitpos */ |
1104 | | complain_overflow_dont,/* complain_on_overflow */ |
1105 | | bfd_elf_generic_reloc, /* special_function */ |
1106 | | "R_C6000_JUMP_SLOT", /* name */ |
1107 | | false, /* partial_inplace */ |
1108 | | 0, /* src_mask */ |
1109 | | 0xffffffff, /* dst_mask */ |
1110 | | false), /* pcrel_offset */ |
1111 | | HOWTO (R_C6000_EHTYPE, /* type */ |
1112 | | 0, /* rightshift */ |
1113 | | 4, /* size */ |
1114 | | 32, /* bitsize */ |
1115 | | false, /* pc_relative */ |
1116 | | 0, /* bitpos */ |
1117 | | complain_overflow_dont,/* complain_on_overflow */ |
1118 | | bfd_elf_generic_reloc, /* special_function */ |
1119 | | "R_C6000_EHTYPE", /* name */ |
1120 | | false, /* partial_inplace */ |
1121 | | 0, /* src_mask */ |
1122 | | 0xffffffff, /* dst_mask */ |
1123 | | false), /* pcrel_offset */ |
1124 | | EMPTY_HOWTO (R_C6000_PCR_H16), |
1125 | | EMPTY_HOWTO (R_C6000_PCR_L16), |
1126 | | EMPTY_HOWTO (31), |
1127 | | EMPTY_HOWTO (32), |
1128 | | EMPTY_HOWTO (33), |
1129 | | EMPTY_HOWTO (34), |
1130 | | EMPTY_HOWTO (35), |
1131 | | EMPTY_HOWTO (36), |
1132 | | EMPTY_HOWTO (37), |
1133 | | EMPTY_HOWTO (38), |
1134 | | EMPTY_HOWTO (39), |
1135 | | EMPTY_HOWTO (40), |
1136 | | EMPTY_HOWTO (41), |
1137 | | EMPTY_HOWTO (42), |
1138 | | EMPTY_HOWTO (43), |
1139 | | EMPTY_HOWTO (44), |
1140 | | EMPTY_HOWTO (45), |
1141 | | EMPTY_HOWTO (46), |
1142 | | EMPTY_HOWTO (47), |
1143 | | EMPTY_HOWTO (48), |
1144 | | EMPTY_HOWTO (49), |
1145 | | EMPTY_HOWTO (50), |
1146 | | EMPTY_HOWTO (51), |
1147 | | EMPTY_HOWTO (52), |
1148 | | EMPTY_HOWTO (53), |
1149 | | EMPTY_HOWTO (54), |
1150 | | EMPTY_HOWTO (55), |
1151 | | EMPTY_HOWTO (56), |
1152 | | EMPTY_HOWTO (57), |
1153 | | EMPTY_HOWTO (58), |
1154 | | EMPTY_HOWTO (59), |
1155 | | EMPTY_HOWTO (60), |
1156 | | EMPTY_HOWTO (61), |
1157 | | EMPTY_HOWTO (62), |
1158 | | EMPTY_HOWTO (63), |
1159 | | EMPTY_HOWTO (64), |
1160 | | EMPTY_HOWTO (65), |
1161 | | EMPTY_HOWTO (66), |
1162 | | EMPTY_HOWTO (67), |
1163 | | EMPTY_HOWTO (68), |
1164 | | EMPTY_HOWTO (69), |
1165 | | EMPTY_HOWTO (70), |
1166 | | EMPTY_HOWTO (71), |
1167 | | EMPTY_HOWTO (72), |
1168 | | EMPTY_HOWTO (73), |
1169 | | EMPTY_HOWTO (74), |
1170 | | EMPTY_HOWTO (75), |
1171 | | EMPTY_HOWTO (76), |
1172 | | EMPTY_HOWTO (77), |
1173 | | EMPTY_HOWTO (78), |
1174 | | EMPTY_HOWTO (79), |
1175 | | EMPTY_HOWTO (80), |
1176 | | EMPTY_HOWTO (81), |
1177 | | EMPTY_HOWTO (82), |
1178 | | EMPTY_HOWTO (83), |
1179 | | EMPTY_HOWTO (84), |
1180 | | EMPTY_HOWTO (85), |
1181 | | EMPTY_HOWTO (86), |
1182 | | EMPTY_HOWTO (87), |
1183 | | EMPTY_HOWTO (88), |
1184 | | EMPTY_HOWTO (89), |
1185 | | EMPTY_HOWTO (90), |
1186 | | EMPTY_HOWTO (91), |
1187 | | EMPTY_HOWTO (92), |
1188 | | EMPTY_HOWTO (93), |
1189 | | EMPTY_HOWTO (94), |
1190 | | EMPTY_HOWTO (95), |
1191 | | EMPTY_HOWTO (96), |
1192 | | EMPTY_HOWTO (97), |
1193 | | EMPTY_HOWTO (98), |
1194 | | EMPTY_HOWTO (99), |
1195 | | EMPTY_HOWTO (100), |
1196 | | EMPTY_HOWTO (101), |
1197 | | EMPTY_HOWTO (102), |
1198 | | EMPTY_HOWTO (103), |
1199 | | EMPTY_HOWTO (104), |
1200 | | EMPTY_HOWTO (105), |
1201 | | EMPTY_HOWTO (106), |
1202 | | EMPTY_HOWTO (107), |
1203 | | EMPTY_HOWTO (108), |
1204 | | EMPTY_HOWTO (109), |
1205 | | EMPTY_HOWTO (110), |
1206 | | EMPTY_HOWTO (111), |
1207 | | EMPTY_HOWTO (112), |
1208 | | EMPTY_HOWTO (113), |
1209 | | EMPTY_HOWTO (114), |
1210 | | EMPTY_HOWTO (115), |
1211 | | EMPTY_HOWTO (116), |
1212 | | EMPTY_HOWTO (117), |
1213 | | EMPTY_HOWTO (118), |
1214 | | EMPTY_HOWTO (119), |
1215 | | EMPTY_HOWTO (120), |
1216 | | EMPTY_HOWTO (121), |
1217 | | EMPTY_HOWTO (122), |
1218 | | EMPTY_HOWTO (123), |
1219 | | EMPTY_HOWTO (124), |
1220 | | EMPTY_HOWTO (125), |
1221 | | EMPTY_HOWTO (126), |
1222 | | EMPTY_HOWTO (127), |
1223 | | EMPTY_HOWTO (128), |
1224 | | EMPTY_HOWTO (129), |
1225 | | EMPTY_HOWTO (130), |
1226 | | EMPTY_HOWTO (131), |
1227 | | EMPTY_HOWTO (132), |
1228 | | EMPTY_HOWTO (133), |
1229 | | EMPTY_HOWTO (134), |
1230 | | EMPTY_HOWTO (135), |
1231 | | EMPTY_HOWTO (136), |
1232 | | EMPTY_HOWTO (137), |
1233 | | EMPTY_HOWTO (138), |
1234 | | EMPTY_HOWTO (139), |
1235 | | EMPTY_HOWTO (140), |
1236 | | EMPTY_HOWTO (141), |
1237 | | EMPTY_HOWTO (142), |
1238 | | EMPTY_HOWTO (143), |
1239 | | EMPTY_HOWTO (144), |
1240 | | EMPTY_HOWTO (145), |
1241 | | EMPTY_HOWTO (146), |
1242 | | EMPTY_HOWTO (147), |
1243 | | EMPTY_HOWTO (148), |
1244 | | EMPTY_HOWTO (149), |
1245 | | EMPTY_HOWTO (150), |
1246 | | EMPTY_HOWTO (151), |
1247 | | EMPTY_HOWTO (152), |
1248 | | EMPTY_HOWTO (153), |
1249 | | EMPTY_HOWTO (154), |
1250 | | EMPTY_HOWTO (155), |
1251 | | EMPTY_HOWTO (156), |
1252 | | EMPTY_HOWTO (157), |
1253 | | EMPTY_HOWTO (158), |
1254 | | EMPTY_HOWTO (159), |
1255 | | EMPTY_HOWTO (160), |
1256 | | EMPTY_HOWTO (161), |
1257 | | EMPTY_HOWTO (162), |
1258 | | EMPTY_HOWTO (163), |
1259 | | EMPTY_HOWTO (164), |
1260 | | EMPTY_HOWTO (165), |
1261 | | EMPTY_HOWTO (166), |
1262 | | EMPTY_HOWTO (167), |
1263 | | EMPTY_HOWTO (168), |
1264 | | EMPTY_HOWTO (169), |
1265 | | EMPTY_HOWTO (170), |
1266 | | EMPTY_HOWTO (171), |
1267 | | EMPTY_HOWTO (172), |
1268 | | EMPTY_HOWTO (173), |
1269 | | EMPTY_HOWTO (174), |
1270 | | EMPTY_HOWTO (175), |
1271 | | EMPTY_HOWTO (176), |
1272 | | EMPTY_HOWTO (177), |
1273 | | EMPTY_HOWTO (178), |
1274 | | EMPTY_HOWTO (179), |
1275 | | EMPTY_HOWTO (180), |
1276 | | EMPTY_HOWTO (181), |
1277 | | EMPTY_HOWTO (182), |
1278 | | EMPTY_HOWTO (183), |
1279 | | EMPTY_HOWTO (184), |
1280 | | EMPTY_HOWTO (185), |
1281 | | EMPTY_HOWTO (186), |
1282 | | EMPTY_HOWTO (187), |
1283 | | EMPTY_HOWTO (188), |
1284 | | EMPTY_HOWTO (189), |
1285 | | EMPTY_HOWTO (190), |
1286 | | EMPTY_HOWTO (191), |
1287 | | EMPTY_HOWTO (192), |
1288 | | EMPTY_HOWTO (193), |
1289 | | EMPTY_HOWTO (194), |
1290 | | EMPTY_HOWTO (195), |
1291 | | EMPTY_HOWTO (196), |
1292 | | EMPTY_HOWTO (197), |
1293 | | EMPTY_HOWTO (198), |
1294 | | EMPTY_HOWTO (199), |
1295 | | EMPTY_HOWTO (200), |
1296 | | EMPTY_HOWTO (201), |
1297 | | EMPTY_HOWTO (202), |
1298 | | EMPTY_HOWTO (203), |
1299 | | EMPTY_HOWTO (204), |
1300 | | EMPTY_HOWTO (205), |
1301 | | EMPTY_HOWTO (206), |
1302 | | EMPTY_HOWTO (207), |
1303 | | EMPTY_HOWTO (208), |
1304 | | EMPTY_HOWTO (209), |
1305 | | EMPTY_HOWTO (210), |
1306 | | EMPTY_HOWTO (211), |
1307 | | EMPTY_HOWTO (212), |
1308 | | EMPTY_HOWTO (213), |
1309 | | EMPTY_HOWTO (214), |
1310 | | EMPTY_HOWTO (215), |
1311 | | EMPTY_HOWTO (216), |
1312 | | EMPTY_HOWTO (217), |
1313 | | EMPTY_HOWTO (218), |
1314 | | EMPTY_HOWTO (219), |
1315 | | EMPTY_HOWTO (220), |
1316 | | EMPTY_HOWTO (221), |
1317 | | EMPTY_HOWTO (222), |
1318 | | EMPTY_HOWTO (223), |
1319 | | EMPTY_HOWTO (224), |
1320 | | EMPTY_HOWTO (225), |
1321 | | EMPTY_HOWTO (226), |
1322 | | EMPTY_HOWTO (227), |
1323 | | EMPTY_HOWTO (228), |
1324 | | EMPTY_HOWTO (229), |
1325 | | EMPTY_HOWTO (230), |
1326 | | EMPTY_HOWTO (231), |
1327 | | EMPTY_HOWTO (232), |
1328 | | EMPTY_HOWTO (233), |
1329 | | EMPTY_HOWTO (234), |
1330 | | EMPTY_HOWTO (235), |
1331 | | EMPTY_HOWTO (236), |
1332 | | EMPTY_HOWTO (237), |
1333 | | EMPTY_HOWTO (238), |
1334 | | EMPTY_HOWTO (239), |
1335 | | EMPTY_HOWTO (240), |
1336 | | EMPTY_HOWTO (241), |
1337 | | EMPTY_HOWTO (242), |
1338 | | EMPTY_HOWTO (243), |
1339 | | EMPTY_HOWTO (244), |
1340 | | EMPTY_HOWTO (245), |
1341 | | EMPTY_HOWTO (246), |
1342 | | EMPTY_HOWTO (247), |
1343 | | EMPTY_HOWTO (248), |
1344 | | EMPTY_HOWTO (249), |
1345 | | EMPTY_HOWTO (250), |
1346 | | EMPTY_HOWTO (251), |
1347 | | EMPTY_HOWTO (252), |
1348 | | HOWTO (R_C6000_ALIGN, /* type */ |
1349 | | 0, /* rightshift */ |
1350 | | 0, /* size */ |
1351 | | 0, /* bitsize */ |
1352 | | false, /* pc_relative */ |
1353 | | 0, /* bitpos */ |
1354 | | complain_overflow_dont,/* complain_on_overflow */ |
1355 | | bfd_elf_generic_reloc, /* special_function */ |
1356 | | "R_C6000_ALIGN", /* name */ |
1357 | | true, /* partial_inplace */ |
1358 | | 0, /* src_mask */ |
1359 | | 0, /* dst_mask */ |
1360 | | false), /* pcrel_offset */ |
1361 | | HOWTO (R_C6000_FPHEAD, /* type */ |
1362 | | 0, /* rightshift */ |
1363 | | 0, /* size */ |
1364 | | 0, /* bitsize */ |
1365 | | false, /* pc_relative */ |
1366 | | 0, /* bitpos */ |
1367 | | complain_overflow_dont,/* complain_on_overflow */ |
1368 | | bfd_elf_generic_reloc, /* special_function */ |
1369 | | "R_C6000_FPHEAD", /* name */ |
1370 | | true, /* partial_inplace */ |
1371 | | 0, /* src_mask */ |
1372 | | 0, /* dst_mask */ |
1373 | | false), /* pcrel_offset */ |
1374 | | HOWTO (R_C6000_NOCMP, /* type */ |
1375 | | 0, /* rightshift */ |
1376 | | 0, /* size */ |
1377 | | 0, /* bitsize */ |
1378 | | false, /* pc_relative */ |
1379 | | 0, /* bitpos */ |
1380 | | complain_overflow_dont,/* complain_on_overflow */ |
1381 | | bfd_elf_generic_reloc, /* special_function */ |
1382 | | "R_C6000_NOCMP", /* name */ |
1383 | | true, /* partial_inplace */ |
1384 | | 0, /* src_mask */ |
1385 | | 0, /* dst_mask */ |
1386 | | false) /* pcrel_offset */ |
1387 | | }; |
1388 | | |
1389 | | /* Map BFD relocations to ELF relocations. */ |
1390 | | |
1391 | | typedef struct |
1392 | | { |
1393 | | bfd_reloc_code_real_type bfd_reloc_val; |
1394 | | enum elf_tic6x_reloc_type elf_reloc_val; |
1395 | | } tic6x_reloc_map; |
1396 | | |
1397 | | static const tic6x_reloc_map elf32_tic6x_reloc_map[] = |
1398 | | { |
1399 | | { BFD_RELOC_NONE, R_C6000_NONE }, |
1400 | | { BFD_RELOC_32, R_C6000_ABS32 }, |
1401 | | { BFD_RELOC_16, R_C6000_ABS16 }, |
1402 | | { BFD_RELOC_8, R_C6000_ABS8 }, |
1403 | | { BFD_RELOC_C6000_PCR_S21, R_C6000_PCR_S21 }, |
1404 | | { BFD_RELOC_C6000_PCR_S12, R_C6000_PCR_S12 }, |
1405 | | { BFD_RELOC_C6000_PCR_S10, R_C6000_PCR_S10 }, |
1406 | | { BFD_RELOC_C6000_PCR_S7, R_C6000_PCR_S7 }, |
1407 | | { BFD_RELOC_C6000_ABS_S16, R_C6000_ABS_S16 }, |
1408 | | { BFD_RELOC_C6000_ABS_L16, R_C6000_ABS_L16 }, |
1409 | | { BFD_RELOC_C6000_ABS_H16, R_C6000_ABS_H16 }, |
1410 | | { BFD_RELOC_C6000_SBR_U15_B, R_C6000_SBR_U15_B }, |
1411 | | { BFD_RELOC_C6000_SBR_U15_H, R_C6000_SBR_U15_H }, |
1412 | | { BFD_RELOC_C6000_SBR_U15_W, R_C6000_SBR_U15_W }, |
1413 | | { BFD_RELOC_C6000_SBR_S16, R_C6000_SBR_S16 }, |
1414 | | { BFD_RELOC_C6000_SBR_L16_B, R_C6000_SBR_L16_B }, |
1415 | | { BFD_RELOC_C6000_SBR_L16_H, R_C6000_SBR_L16_H }, |
1416 | | { BFD_RELOC_C6000_SBR_L16_W, R_C6000_SBR_L16_W }, |
1417 | | { BFD_RELOC_C6000_SBR_H16_B, R_C6000_SBR_H16_B }, |
1418 | | { BFD_RELOC_C6000_SBR_H16_H, R_C6000_SBR_H16_H }, |
1419 | | { BFD_RELOC_C6000_SBR_H16_W, R_C6000_SBR_H16_W }, |
1420 | | { BFD_RELOC_C6000_SBR_GOT_U15_W, R_C6000_SBR_GOT_U15_W }, |
1421 | | { BFD_RELOC_C6000_SBR_GOT_L16_W, R_C6000_SBR_GOT_L16_W }, |
1422 | | { BFD_RELOC_C6000_SBR_GOT_H16_W, R_C6000_SBR_GOT_H16_W }, |
1423 | | { BFD_RELOC_C6000_DSBT_INDEX, R_C6000_DSBT_INDEX }, |
1424 | | { BFD_RELOC_C6000_PREL31, R_C6000_PREL31 }, |
1425 | | { BFD_RELOC_C6000_COPY, R_C6000_COPY }, |
1426 | | { BFD_RELOC_C6000_JUMP_SLOT, R_C6000_JUMP_SLOT }, |
1427 | | { BFD_RELOC_C6000_EHTYPE, R_C6000_EHTYPE }, |
1428 | | { BFD_RELOC_C6000_PCR_H16, R_C6000_PCR_H16 }, |
1429 | | { BFD_RELOC_C6000_PCR_L16, R_C6000_PCR_L16 }, |
1430 | | { BFD_RELOC_C6000_ALIGN, R_C6000_ALIGN }, |
1431 | | { BFD_RELOC_C6000_FPHEAD, R_C6000_FPHEAD }, |
1432 | | { BFD_RELOC_C6000_NOCMP, R_C6000_NOCMP } |
1433 | | }; |
1434 | | |
1435 | | static reloc_howto_type * |
1436 | | elf32_tic6x_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
1437 | 0 | { |
1438 | 0 | unsigned int i; |
1439 | |
|
1440 | 0 | for (i = 0; i < ARRAY_SIZE (elf32_tic6x_reloc_map); i++) |
1441 | 0 | if (elf32_tic6x_reloc_map[i].bfd_reloc_val == code) |
1442 | 0 | { |
1443 | 0 | enum elf_tic6x_reloc_type elf_reloc_val; |
1444 | 0 | reloc_howto_type *howto; |
1445 | |
|
1446 | 0 | elf_reloc_val = elf32_tic6x_reloc_map[i].elf_reloc_val; |
1447 | 0 | if (elf32_tic6x_tdata (abfd)->use_rela_p) |
1448 | 0 | howto = &elf32_tic6x_howto_table[elf_reloc_val]; |
1449 | 0 | else |
1450 | 0 | howto = &elf32_tic6x_howto_table_rel[elf_reloc_val]; |
1451 | | |
1452 | | /* Some relocations are RELA-only; do not return them for |
1453 | | REL. */ |
1454 | 0 | if (howto->name == NULL) |
1455 | 0 | howto = NULL; |
1456 | |
|
1457 | 0 | return howto; |
1458 | 0 | } |
1459 | | |
1460 | 0 | return NULL; |
1461 | 0 | } |
1462 | | |
1463 | | static reloc_howto_type * |
1464 | | elf32_tic6x_reloc_name_lookup (bfd *abfd, const char *r_name) |
1465 | 0 | { |
1466 | 0 | if (elf32_tic6x_tdata (abfd)->use_rela_p) |
1467 | 0 | { |
1468 | 0 | unsigned int i; |
1469 | |
|
1470 | 0 | for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table); i++) |
1471 | 0 | if (elf32_tic6x_howto_table[i].name != NULL |
1472 | 0 | && strcasecmp (elf32_tic6x_howto_table[i].name, r_name) == 0) |
1473 | 0 | return &elf32_tic6x_howto_table[i]; |
1474 | 0 | } |
1475 | 0 | else |
1476 | 0 | { |
1477 | 0 | unsigned int i; |
1478 | |
|
1479 | 0 | for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table_rel); i++) |
1480 | 0 | if (elf32_tic6x_howto_table_rel[i].name != NULL |
1481 | 0 | && strcasecmp (elf32_tic6x_howto_table_rel[i].name, r_name) == 0) |
1482 | 0 | return &elf32_tic6x_howto_table_rel[i]; |
1483 | 0 | } |
1484 | | |
1485 | 0 | return NULL; |
1486 | 0 | } |
1487 | | |
1488 | | static bool |
1489 | | elf32_tic6x_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
1490 | | Elf_Internal_Rela *elf_reloc) |
1491 | 0 | { |
1492 | 0 | unsigned int r_type; |
1493 | |
|
1494 | 0 | r_type = ELF32_R_TYPE (elf_reloc->r_info); |
1495 | 0 | if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table)) |
1496 | 0 | { |
1497 | | /* xgettext:c-format */ |
1498 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
1499 | 0 | abfd, r_type); |
1500 | 0 | bfd_set_error (bfd_error_bad_value); |
1501 | 0 | return false; |
1502 | 0 | } |
1503 | | |
1504 | 0 | bfd_reloc->howto = &elf32_tic6x_howto_table[r_type]; |
1505 | 0 | if (bfd_reloc->howto == NULL || bfd_reloc->howto->name == NULL) |
1506 | 0 | { |
1507 | | /* xgettext:c-format */ |
1508 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
1509 | 0 | abfd, r_type); |
1510 | 0 | bfd_set_error (bfd_error_bad_value); |
1511 | 0 | return false; |
1512 | 0 | } |
1513 | | |
1514 | 0 | return true; |
1515 | 0 | } |
1516 | | |
1517 | | static bool |
1518 | | elf32_tic6x_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, |
1519 | | Elf_Internal_Rela *elf_reloc) |
1520 | 0 | { |
1521 | 0 | unsigned int r_type; |
1522 | |
|
1523 | 0 | r_type = ELF32_R_TYPE (elf_reloc->r_info); |
1524 | 0 | if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table_rel)) |
1525 | 0 | { |
1526 | | /* xgettext:c-format */ |
1527 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
1528 | 0 | abfd, r_type); |
1529 | 0 | bfd_set_error (bfd_error_bad_value); |
1530 | 0 | return false; |
1531 | 0 | } |
1532 | | |
1533 | 0 | bfd_reloc->howto = &elf32_tic6x_howto_table_rel[r_type]; |
1534 | 0 | if (bfd_reloc->howto == NULL || bfd_reloc->howto->name == NULL) |
1535 | 0 | { |
1536 | | /* xgettext:c-format */ |
1537 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
1538 | 0 | abfd, r_type); |
1539 | 0 | bfd_set_error (bfd_error_bad_value); |
1540 | 0 | return false; |
1541 | 0 | } |
1542 | | |
1543 | 0 | return true; |
1544 | 0 | } |
1545 | | |
1546 | | void |
1547 | | elf32_tic6x_set_use_rela_p (bfd *abfd, bool use_rela_p) |
1548 | 24.4k | { |
1549 | 24.4k | elf32_tic6x_tdata (abfd)->use_rela_p = use_rela_p; |
1550 | 24.4k | } |
1551 | | |
1552 | | /* Create a C6X ELF linker hash table. */ |
1553 | | |
1554 | | static struct bfd_link_hash_table * |
1555 | | elf32_tic6x_link_hash_table_create (bfd *abfd) |
1556 | 0 | { |
1557 | 0 | struct elf32_tic6x_link_hash_table *ret; |
1558 | 0 | size_t amt = sizeof (struct elf32_tic6x_link_hash_table); |
1559 | |
|
1560 | 0 | ret = bfd_zmalloc (amt); |
1561 | 0 | if (ret == NULL) |
1562 | 0 | return NULL; |
1563 | | |
1564 | 0 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
1565 | 0 | _bfd_elf_link_hash_newfunc, |
1566 | 0 | sizeof (struct elf_link_hash_entry), |
1567 | 0 | TIC6X_ELF_DATA)) |
1568 | 0 | { |
1569 | 0 | free (ret); |
1570 | 0 | return NULL; |
1571 | 0 | } |
1572 | | |
1573 | 0 | ret->obfd = abfd; |
1574 | 0 | ret->elf.is_relocatable_executable = 1; |
1575 | |
|
1576 | 0 | return &ret->elf.root; |
1577 | 0 | } |
1578 | | |
1579 | | static bool |
1580 | | elf32_tic6x_final_link (bfd *abfd, struct bfd_link_info *info) |
1581 | 0 | { |
1582 | 0 | if (bfd_link_pic (info)) |
1583 | 0 | { |
1584 | 0 | obj_attribute *out_attr; |
1585 | 0 | out_attr = elf_known_obj_attributes_proc (abfd); |
1586 | 0 | if (out_attr[Tag_ABI_PIC].i == 0) |
1587 | 0 | { |
1588 | 0 | _bfd_error_handler (_("warning: generating a shared library " |
1589 | 0 | "containing non-PIC code")); |
1590 | 0 | } |
1591 | 0 | if (out_attr[Tag_ABI_PID].i == 0) |
1592 | 0 | { |
1593 | 0 | _bfd_error_handler (_("warning: generating a shared library " |
1594 | 0 | "containing non-PID code")); |
1595 | 0 | } |
1596 | 0 | } |
1597 | | /* Invoke the regular ELF backend linker to do all the work. */ |
1598 | 0 | if (!bfd_elf_final_link (abfd, info)) |
1599 | 0 | return false; |
1600 | | |
1601 | 0 | return true; |
1602 | 0 | } |
1603 | | |
1604 | | /* Called to pass PARAMS to the backend. We store them in the hash table |
1605 | | associated with INFO. */ |
1606 | | |
1607 | | void |
1608 | | elf32_tic6x_setup (struct bfd_link_info *info, |
1609 | | struct elf32_tic6x_params *params) |
1610 | 0 | { |
1611 | 0 | struct elf32_tic6x_link_hash_table *htab = elf32_tic6x_hash_table (info); |
1612 | 0 | htab->params = *params; |
1613 | 0 | } |
1614 | | |
1615 | | /* Determine if we're dealing with a DSBT object. */ |
1616 | | |
1617 | | static bool |
1618 | | elf32_tic6x_using_dsbt (bfd *abfd) |
1619 | 0 | { |
1620 | 0 | return bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, |
1621 | 0 | Tag_ABI_DSBT); |
1622 | 0 | } |
1623 | | |
1624 | | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt |
1625 | | sections in DYNOBJ, and set up shortcuts to them in our hash |
1626 | | table. */ |
1627 | | |
1628 | | static bool |
1629 | | elf32_tic6x_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
1630 | 0 | { |
1631 | 0 | struct elf32_tic6x_link_hash_table *htab; |
1632 | 0 | flagword flags; |
1633 | |
|
1634 | 0 | htab = elf32_tic6x_hash_table (info); |
1635 | 0 | if (htab == NULL) |
1636 | 0 | return false; |
1637 | | |
1638 | 0 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
1639 | 0 | return false; |
1640 | | |
1641 | | /* Create .dsbt */ |
1642 | 0 | flags = (SEC_ALLOC | SEC_LOAD |
1643 | 0 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
1644 | 0 | htab->dsbt = bfd_make_section_anyway_with_flags (dynobj, ".dsbt", |
1645 | 0 | flags); |
1646 | 0 | if (htab->dsbt == NULL |
1647 | 0 | || !bfd_set_section_alignment (htab->dsbt, 2) |
1648 | 0 | || !bfd_set_section_alignment (htab->elf.splt, 5)) |
1649 | 0 | return false; |
1650 | | |
1651 | 0 | return true; |
1652 | 0 | } |
1653 | | |
1654 | | static bool |
1655 | | elf32_tic6x_mkobject (bfd *abfd) |
1656 | 24.4k | { |
1657 | 24.4k | bool ret; |
1658 | | |
1659 | 24.4k | ret = bfd_elf_allocate_object (abfd, sizeof (struct elf32_tic6x_obj_tdata), |
1660 | 24.4k | TIC6X_ELF_DATA); |
1661 | 24.4k | if (ret) |
1662 | 24.4k | elf32_tic6x_set_use_rela_p (abfd, true); |
1663 | 24.4k | return ret; |
1664 | 24.4k | } |
1665 | | |
1666 | | /* Install relocation RELA into section SRELA, incrementing its |
1667 | | reloc_count. */ |
1668 | | |
1669 | | static void |
1670 | | elf32_tic6x_install_rela (bfd *output_bfd, asection *srela, |
1671 | | Elf_Internal_Rela *rela) |
1672 | 0 | { |
1673 | 0 | bfd_byte *loc; |
1674 | 0 | bfd_vma off = srela->reloc_count++ * sizeof (Elf32_External_Rela); |
1675 | 0 | loc = srela->contents + off; |
1676 | 0 | BFD_ASSERT (off < srela->size); |
1677 | 0 | bfd_elf32_swap_reloca_out (output_bfd, rela, loc); |
1678 | 0 | } |
1679 | | |
1680 | | /* Create a dynamic reloc against the GOT at offset OFFSET. The contents |
1681 | | of the GOT at this offset have been initialized with the relocation. */ |
1682 | | |
1683 | | static void |
1684 | | elf32_tic6x_make_got_dynreloc (bfd *output_bfd, |
1685 | | struct elf32_tic6x_link_hash_table *htab, |
1686 | | asection *sym_sec, bfd_vma offset) |
1687 | 0 | { |
1688 | 0 | asection *sgot = htab->elf.sgot; |
1689 | 0 | Elf_Internal_Rela outrel; |
1690 | 0 | int dynindx; |
1691 | |
|
1692 | 0 | outrel.r_offset = sgot->output_section->vma + sgot->output_offset + offset; |
1693 | 0 | outrel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); |
1694 | 0 | if (sym_sec && sym_sec->output_section |
1695 | 0 | && ! bfd_is_abs_section (sym_sec->output_section) |
1696 | 0 | && ! bfd_is_und_section (sym_sec->output_section)) |
1697 | 0 | { |
1698 | 0 | dynindx = elf_section_data (sym_sec->output_section)->dynindx; |
1699 | 0 | outrel.r_addend -= sym_sec->output_section->vma; |
1700 | 0 | } |
1701 | 0 | else |
1702 | 0 | { |
1703 | 0 | dynindx = 0; |
1704 | 0 | } |
1705 | 0 | outrel.r_info = ELF32_R_INFO (dynindx, R_C6000_ABS32); |
1706 | 0 | elf32_tic6x_install_rela (output_bfd, htab->elf.srelgot, &outrel); |
1707 | 0 | } |
1708 | | |
1709 | | /* Finish up dynamic symbol handling. We set the contents of various |
1710 | | dynamic sections here. */ |
1711 | | |
1712 | | static bool |
1713 | | elf32_tic6x_finish_dynamic_symbol (bfd * output_bfd, |
1714 | | struct bfd_link_info *info, |
1715 | | struct elf_link_hash_entry *h, |
1716 | | Elf_Internal_Sym * sym) |
1717 | 0 | { |
1718 | 0 | struct elf32_tic6x_link_hash_table *htab; |
1719 | |
|
1720 | 0 | htab = elf32_tic6x_hash_table (info); |
1721 | |
|
1722 | 0 | if (h->plt.offset != (bfd_vma) -1) |
1723 | 0 | { |
1724 | 0 | bfd_vma plt_index; |
1725 | 0 | bfd_vma got_section_offset, got_dp_offset, rela_offset; |
1726 | 0 | Elf_Internal_Rela rela; |
1727 | 0 | bfd_byte *loc; |
1728 | 0 | asection *plt, *gotplt, *relplt; |
1729 | 0 | const struct elf_backend_data *bed; |
1730 | |
|
1731 | 0 | bed = get_elf_backend_data (output_bfd); |
1732 | |
|
1733 | 0 | BFD_ASSERT (htab->elf.splt != NULL); |
1734 | 0 | plt = htab->elf.splt; |
1735 | 0 | gotplt = htab->elf.sgotplt; |
1736 | 0 | relplt = htab->elf.srelplt; |
1737 | | |
1738 | | /* This symbol has an entry in the procedure linkage table. Set |
1739 | | it up. */ |
1740 | |
|
1741 | 0 | if ((h->dynindx == -1 |
1742 | 0 | && !((h->forced_local || bfd_link_executable (info)) |
1743 | 0 | && h->def_regular |
1744 | 0 | && h->type == STT_GNU_IFUNC)) |
1745 | 0 | || plt == NULL |
1746 | 0 | || gotplt == NULL |
1747 | 0 | || relplt == NULL) |
1748 | 0 | abort (); |
1749 | | |
1750 | | /* Get the index in the procedure linkage table which |
1751 | | corresponds to this symbol. This is the index of this symbol |
1752 | | in all the symbols for which we are making plt entries. The |
1753 | | first entry in the procedure linkage table is reserved. |
1754 | | |
1755 | | Get the offset into the .got table of the entry that |
1756 | | corresponds to this function. Each .got entry is 4 bytes. |
1757 | | The first three are reserved. |
1758 | | |
1759 | | For static executables, we don't reserve anything. */ |
1760 | | |
1761 | 0 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; |
1762 | 0 | got_section_offset = plt_index + bed->got_header_size / 4; |
1763 | 0 | got_dp_offset = got_section_offset + htab->params.dsbt_size; |
1764 | 0 | rela_offset = plt_index * sizeof (Elf32_External_Rela); |
1765 | |
|
1766 | 0 | got_section_offset *= 4; |
1767 | | |
1768 | | /* Fill in the entry in the procedure linkage table. */ |
1769 | | |
1770 | | /* ldw .d2t2 *+B14($GOT(f)), b2 */ |
1771 | 0 | bfd_put_32 (output_bfd, got_dp_offset << 8 | 0x0100006e, |
1772 | 0 | plt->contents + h->plt.offset); |
1773 | | /* mvk .s2 low(rela_offset), b0 */ |
1774 | 0 | bfd_put_32 (output_bfd, (rela_offset & 0xffff) << 7 | 0x0000002a, |
1775 | 0 | plt->contents + h->plt.offset + 4); |
1776 | | /* mvkh .s2 high(rela_offset), b0 */ |
1777 | 0 | bfd_put_32 (output_bfd, ((rela_offset >> 16) & 0xffff) << 7 | 0x0000006a, |
1778 | 0 | plt->contents + h->plt.offset + 8); |
1779 | | /* nop 2 */ |
1780 | 0 | bfd_put_32 (output_bfd, 0x00002000, |
1781 | 0 | plt->contents + h->plt.offset + 12); |
1782 | | /* b .s2 b2 */ |
1783 | 0 | bfd_put_32 (output_bfd, 0x00080362, |
1784 | 0 | plt->contents + h->plt.offset + 16); |
1785 | | /* nop 5 */ |
1786 | 0 | bfd_put_32 (output_bfd, 0x00008000, |
1787 | 0 | plt->contents + h->plt.offset + 20); |
1788 | | |
1789 | | /* Fill in the entry in the global offset table. */ |
1790 | 0 | bfd_put_32 (output_bfd, |
1791 | 0 | (plt->output_section->vma + plt->output_offset), |
1792 | 0 | gotplt->contents + got_section_offset); |
1793 | | |
1794 | | /* Fill in the entry in the .rel.plt section. */ |
1795 | 0 | rela.r_offset = (gotplt->output_section->vma |
1796 | 0 | + gotplt->output_offset |
1797 | 0 | + got_section_offset); |
1798 | 0 | rela.r_info = ELF32_R_INFO (h->dynindx, R_C6000_JUMP_SLOT); |
1799 | 0 | rela.r_addend = 0; |
1800 | 0 | loc = relplt->contents + rela_offset; |
1801 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
1802 | |
|
1803 | 0 | if (!h->def_regular) |
1804 | 0 | { |
1805 | | /* Mark the symbol as undefined, rather than as defined in |
1806 | | the .plt section. */ |
1807 | 0 | sym->st_shndx = SHN_UNDEF; |
1808 | 0 | sym->st_value = 0; |
1809 | 0 | } |
1810 | 0 | } |
1811 | | |
1812 | 0 | if (h->got.offset != (bfd_vma) -1) |
1813 | 0 | { |
1814 | 0 | asection *sgot; |
1815 | 0 | asection *srela; |
1816 | | |
1817 | | /* This symbol has an entry in the global offset table. |
1818 | | Set it up. */ |
1819 | |
|
1820 | 0 | sgot = htab->elf.sgot; |
1821 | 0 | srela = htab->elf.srelgot; |
1822 | 0 | BFD_ASSERT (sgot != NULL && srela != NULL); |
1823 | | |
1824 | | /* If this is a -Bsymbolic link, and the symbol is defined |
1825 | | locally, we just want to emit a RELATIVE reloc. Likewise if |
1826 | | the symbol was forced to be local because of a version file. |
1827 | | The entry in the global offset table will already have been |
1828 | | initialized in the relocate_section function. */ |
1829 | 0 | if (bfd_link_pic (info) |
1830 | 0 | && (SYMBOLIC_BIND (info, h) |
1831 | 0 | || h->dynindx == -1 || h->forced_local) && h->def_regular) |
1832 | 0 | { |
1833 | 0 | asection *s = h->root.u.def.section; |
1834 | 0 | elf32_tic6x_make_got_dynreloc (output_bfd, htab, s, |
1835 | 0 | h->got.offset & ~(bfd_vma) 1); |
1836 | 0 | } |
1837 | 0 | else |
1838 | 0 | { |
1839 | 0 | Elf_Internal_Rela outrel; |
1840 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
1841 | 0 | sgot->contents + (h->got.offset & ~(bfd_vma) 1)); |
1842 | 0 | outrel.r_offset = (sgot->output_section->vma |
1843 | 0 | + sgot->output_offset |
1844 | 0 | + (h->got.offset & ~(bfd_vma) 1)); |
1845 | 0 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_ABS32); |
1846 | 0 | outrel.r_addend = 0; |
1847 | |
|
1848 | 0 | elf32_tic6x_install_rela (output_bfd, srela, &outrel); |
1849 | 0 | } |
1850 | 0 | } |
1851 | |
|
1852 | 0 | if (h->needs_copy) |
1853 | 0 | { |
1854 | 0 | Elf_Internal_Rela rel; |
1855 | 0 | asection *s; |
1856 | | |
1857 | | /* This symbol needs a copy reloc. Set it up. */ |
1858 | |
|
1859 | 0 | if (h->dynindx == -1 |
1860 | 0 | || (h->root.type != bfd_link_hash_defined |
1861 | 0 | && h->root.type != bfd_link_hash_defweak) |
1862 | 0 | || htab->elf.srelbss == NULL |
1863 | 0 | || htab->elf.sreldynrelro == NULL) |
1864 | 0 | abort (); |
1865 | | |
1866 | 0 | rel.r_offset = (h->root.u.def.value |
1867 | 0 | + h->root.u.def.section->output_section->vma |
1868 | 0 | + h->root.u.def.section->output_offset); |
1869 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_COPY); |
1870 | 0 | rel.r_addend = 0; |
1871 | 0 | if (h->root.u.def.section == htab->elf.sdynrelro) |
1872 | 0 | s = htab->elf.sreldynrelro; |
1873 | 0 | else |
1874 | 0 | s = htab->elf.srelbss; |
1875 | |
|
1876 | 0 | elf32_tic6x_install_rela (output_bfd, s, &rel); |
1877 | 0 | } |
1878 | | |
1879 | | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
1880 | 0 | if (h == elf_hash_table (info)->hdynamic |
1881 | 0 | || h == elf_hash_table (info)->hgot) |
1882 | 0 | sym->st_shndx = SHN_ABS; |
1883 | |
|
1884 | 0 | return true; |
1885 | 0 | } |
1886 | | |
1887 | | /* Unwinding tables are not referenced directly. This pass marks them as |
1888 | | required if the corresponding code section is marked. */ |
1889 | | |
1890 | | static bool |
1891 | | elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info *info, |
1892 | | elf_gc_mark_hook_fn gc_mark_hook) |
1893 | 0 | { |
1894 | 0 | bfd *sub; |
1895 | 0 | Elf_Internal_Shdr **elf_shdrp; |
1896 | 0 | bool again; |
1897 | |
|
1898 | 0 | _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook); |
1899 | | |
1900 | | /* Marking EH data may cause additional code sections to be marked, |
1901 | | requiring multiple passes. */ |
1902 | 0 | again = true; |
1903 | 0 | while (again) |
1904 | 0 | { |
1905 | 0 | again = false; |
1906 | 0 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
1907 | 0 | { |
1908 | 0 | asection *o; |
1909 | |
|
1910 | 0 | if (! is_tic6x_elf (sub)) |
1911 | 0 | continue; |
1912 | | |
1913 | 0 | elf_shdrp = elf_elfsections (sub); |
1914 | 0 | for (o = sub->sections; o != NULL; o = o->next) |
1915 | 0 | { |
1916 | 0 | Elf_Internal_Shdr *hdr; |
1917 | |
|
1918 | 0 | hdr = &elf_section_data (o)->this_hdr; |
1919 | 0 | if (hdr->sh_type == SHT_C6000_UNWIND |
1920 | 0 | && hdr->sh_link |
1921 | 0 | && hdr->sh_link < elf_numsections (sub) |
1922 | 0 | && !o->gc_mark |
1923 | 0 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) |
1924 | 0 | { |
1925 | 0 | again = true; |
1926 | 0 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) |
1927 | 0 | return false; |
1928 | 0 | } |
1929 | 0 | } |
1930 | 0 | } |
1931 | 0 | } |
1932 | | |
1933 | 0 | return true; |
1934 | 0 | } |
1935 | | |
1936 | | /* Return TRUE if this is an unwinding table index. */ |
1937 | | |
1938 | | static bool |
1939 | | is_tic6x_elf_unwind_section_name (const char *name) |
1940 | 0 | { |
1941 | 0 | return (startswith (name, ELF_STRING_C6000_unwind) |
1942 | 0 | || startswith (name, ELF_STRING_C6000_unwind_once)); |
1943 | 0 | } |
1944 | | |
1945 | | |
1946 | | /* Set the type and flags for an unwinding index table. We do this by |
1947 | | the section name, which is a hack, but ought to work. */ |
1948 | | |
1949 | | static bool |
1950 | | elf32_tic6x_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
1951 | | Elf_Internal_Shdr *hdr, asection *sec) |
1952 | 0 | { |
1953 | 0 | const char * name; |
1954 | |
|
1955 | 0 | name = bfd_section_name (sec); |
1956 | |
|
1957 | 0 | if (is_tic6x_elf_unwind_section_name (name)) |
1958 | 0 | { |
1959 | 0 | hdr->sh_type = SHT_C6000_UNWIND; |
1960 | 0 | hdr->sh_flags |= SHF_LINK_ORDER; |
1961 | 0 | } |
1962 | |
|
1963 | 0 | return true; |
1964 | 0 | } |
1965 | | |
1966 | | /* Adjust a symbol defined by a dynamic object and referenced by a |
1967 | | regular object. The current definition is in some section of the |
1968 | | dynamic object, but we're not including those sections. We have to |
1969 | | change the definition to something the rest of the link can |
1970 | | understand. */ |
1971 | | |
1972 | | static bool |
1973 | | elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info *info, |
1974 | | struct elf_link_hash_entry *h) |
1975 | 0 | { |
1976 | 0 | struct elf32_tic6x_link_hash_table *htab; |
1977 | 0 | bfd *dynobj; |
1978 | 0 | asection *s, *srel; |
1979 | |
|
1980 | 0 | dynobj = elf_hash_table (info)->dynobj; |
1981 | | |
1982 | | /* Make sure we know what is going on here. */ |
1983 | 0 | BFD_ASSERT (dynobj != NULL |
1984 | 0 | && (h->needs_plt |
1985 | 0 | || h->is_weakalias |
1986 | 0 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); |
1987 | | |
1988 | | /* If this is a function, put it in the procedure linkage table. We |
1989 | | will fill in the contents of the procedure linkage table later, |
1990 | | when we know the address of the .got section. */ |
1991 | 0 | if (h->type == STT_FUNC |
1992 | 0 | || h->needs_plt) |
1993 | 0 | { |
1994 | 0 | if (h->plt.refcount <= 0 |
1995 | 0 | || SYMBOL_CALLS_LOCAL (info, h) |
1996 | 0 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1997 | 0 | && h->root.type == bfd_link_hash_undefweak)) |
1998 | 0 | { |
1999 | | /* This case can occur if we saw a PLT32 reloc in an input |
2000 | | file, but the symbol was never referred to by a dynamic |
2001 | | object, or if all references were garbage collected. In |
2002 | | such a case, we don't actually need to build a procedure |
2003 | | linkage table, and we can just do a PC32 reloc instead. */ |
2004 | 0 | h->plt.offset = (bfd_vma) -1; |
2005 | 0 | h->needs_plt = 0; |
2006 | 0 | } |
2007 | |
|
2008 | 0 | return true; |
2009 | 0 | } |
2010 | | |
2011 | | /* If this is a weak symbol, and there is a real definition, the |
2012 | | processor independent code will have arranged for us to see the |
2013 | | real definition first, and we can just use the same value. */ |
2014 | 0 | if (h->is_weakalias) |
2015 | 0 | { |
2016 | 0 | struct elf_link_hash_entry *def = weakdef (h); |
2017 | 0 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); |
2018 | 0 | h->root.u.def.section = def->root.u.def.section; |
2019 | 0 | h->root.u.def.value = def->root.u.def.value; |
2020 | 0 | h->non_got_ref = def->non_got_ref; |
2021 | 0 | return true; |
2022 | 0 | } |
2023 | | |
2024 | | /* This is a reference to a symbol defined by a dynamic object which |
2025 | | is not a function. */ |
2026 | | |
2027 | | /* If we are creating a shared library, we must presume that the |
2028 | | only references to the symbol are via the global offset table. |
2029 | | For such cases we need not do anything here; the relocations will |
2030 | | be handled correctly by relocate_section. */ |
2031 | 0 | if (bfd_link_pic (info)) |
2032 | 0 | return true; |
2033 | | |
2034 | | /* If there are no references to this symbol that do not use the |
2035 | | GOT, we don't need to generate a copy reloc. */ |
2036 | 0 | if (!h->non_got_ref) |
2037 | 0 | return true; |
2038 | | |
2039 | | /* If -z nocopyreloc was given, we won't generate them either. */ |
2040 | 0 | if (info->nocopyreloc) |
2041 | 0 | { |
2042 | 0 | h->non_got_ref = 0; |
2043 | 0 | return true; |
2044 | 0 | } |
2045 | | |
2046 | 0 | htab = elf32_tic6x_hash_table (info); |
2047 | 0 | if (htab == NULL) |
2048 | 0 | return false; |
2049 | | |
2050 | | /* We must allocate the symbol in our .dynbss section, which will |
2051 | | become part of the .bss section of the executable. There will be |
2052 | | an entry for this symbol in the .dynsym section. The dynamic |
2053 | | object will contain position independent code, so all references |
2054 | | from the dynamic object to this symbol will go through the global |
2055 | | offset table. The dynamic linker will use the .dynsym entry to |
2056 | | determine the address it must put in the global offset table, so |
2057 | | both the dynamic object and the regular object will refer to the |
2058 | | same memory location for the variable. */ |
2059 | | |
2060 | | /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to |
2061 | | copy the initial value out of the dynamic object and into the |
2062 | | runtime process image. */ |
2063 | 0 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
2064 | 0 | { |
2065 | 0 | s = htab->elf.sdynrelro; |
2066 | 0 | srel = htab->elf.sreldynrelro; |
2067 | 0 | } |
2068 | 0 | else |
2069 | 0 | { |
2070 | 0 | s = htab->elf.sdynbss; |
2071 | 0 | srel = htab->elf.srelbss; |
2072 | 0 | } |
2073 | 0 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
2074 | 0 | { |
2075 | 0 | srel->size += sizeof (Elf32_External_Rela); |
2076 | 0 | h->needs_copy = 1; |
2077 | 0 | } |
2078 | |
|
2079 | 0 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
2080 | 0 | } |
2081 | | |
2082 | | static bool |
2083 | | elf32_tic6x_new_section_hook (bfd *abfd, asection *sec) |
2084 | 21 | { |
2085 | 21 | bool ret; |
2086 | | |
2087 | | /* Allocate target specific section data. */ |
2088 | 21 | if (!sec->used_by_bfd) |
2089 | 21 | { |
2090 | 21 | _tic6x_elf_section_data *sdata; |
2091 | 21 | size_t amt = sizeof (*sdata); |
2092 | | |
2093 | 21 | sdata = (_tic6x_elf_section_data *) bfd_zalloc (abfd, amt); |
2094 | 21 | if (sdata == NULL) |
2095 | 0 | return false; |
2096 | 21 | sec->used_by_bfd = sdata; |
2097 | 21 | } |
2098 | | |
2099 | 21 | ret = _bfd_elf_new_section_hook (abfd, sec); |
2100 | 21 | sec->use_rela_p = elf32_tic6x_tdata (abfd)->use_rela_p; |
2101 | | |
2102 | 21 | return ret; |
2103 | 21 | } |
2104 | | |
2105 | | /* Return true if relocation REL against section SEC is a REL rather |
2106 | | than RELA relocation. RELOCS is the first relocation in the |
2107 | | section and ABFD is the bfd that contains SEC. */ |
2108 | | |
2109 | | static bool |
2110 | | elf32_tic6x_rel_relocation_p (bfd *abfd, asection *sec, |
2111 | | const Elf_Internal_Rela *relocs, |
2112 | | const Elf_Internal_Rela *rel) |
2113 | 0 | { |
2114 | 0 | Elf_Internal_Shdr *rel_hdr; |
2115 | 0 | const struct elf_backend_data *bed; |
2116 | | |
2117 | | /* To determine which flavor of relocation this is, we depend on the |
2118 | | fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */ |
2119 | 0 | rel_hdr = elf_section_data (sec)->rel.hdr; |
2120 | 0 | if (rel_hdr == NULL) |
2121 | 0 | return false; |
2122 | 0 | bed = get_elf_backend_data (abfd); |
2123 | 0 | return ((size_t) (rel - relocs) |
2124 | 0 | < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel); |
2125 | 0 | } |
2126 | | |
2127 | | /* We need dynamic symbols for every section, since segments can |
2128 | | relocate independently. */ |
2129 | | static bool |
2130 | | elf32_tic6x_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, |
2131 | | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2132 | | asection *p) |
2133 | 0 | { |
2134 | 0 | switch (elf_section_data (p)->this_hdr.sh_type) |
2135 | 0 | { |
2136 | 0 | case SHT_PROGBITS: |
2137 | 0 | case SHT_NOBITS: |
2138 | | /* If sh_type is yet undecided, assume it could be |
2139 | | SHT_PROGBITS/SHT_NOBITS. */ |
2140 | 0 | case SHT_NULL: |
2141 | 0 | return false; |
2142 | | |
2143 | | /* There shouldn't be section relative relocations |
2144 | | against any other section. */ |
2145 | 0 | default: |
2146 | 0 | return true; |
2147 | 0 | } |
2148 | 0 | } |
2149 | | |
2150 | | static int |
2151 | | elf32_tic6x_relocate_section (bfd *output_bfd, |
2152 | | struct bfd_link_info *info, |
2153 | | bfd *input_bfd, |
2154 | | asection *input_section, |
2155 | | bfd_byte *contents, |
2156 | | Elf_Internal_Rela *relocs, |
2157 | | Elf_Internal_Sym *local_syms, |
2158 | | asection **local_sections) |
2159 | 0 | { |
2160 | 0 | struct elf32_tic6x_link_hash_table *htab; |
2161 | 0 | Elf_Internal_Shdr *symtab_hdr; |
2162 | 0 | struct elf_link_hash_entry **sym_hashes; |
2163 | 0 | bfd_vma *local_got_offsets; |
2164 | 0 | Elf_Internal_Rela *rel; |
2165 | 0 | Elf_Internal_Rela *relend; |
2166 | 0 | bool ok = true; |
2167 | |
|
2168 | 0 | htab = elf32_tic6x_hash_table (info); |
2169 | 0 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
2170 | 0 | sym_hashes = elf_sym_hashes (input_bfd); |
2171 | 0 | local_got_offsets = elf_local_got_offsets (input_bfd); |
2172 | |
|
2173 | 0 | relend = relocs + input_section->reloc_count; |
2174 | |
|
2175 | 0 | for (rel = relocs; rel < relend; rel ++) |
2176 | 0 | { |
2177 | 0 | int r_type; |
2178 | 0 | unsigned long r_symndx; |
2179 | 0 | arelent bfd_reloc; |
2180 | 0 | reloc_howto_type *howto; |
2181 | 0 | Elf_Internal_Sym *sym; |
2182 | 0 | asection *sec; |
2183 | 0 | struct elf_link_hash_entry *h; |
2184 | 0 | bfd_vma off, off2, relocation; |
2185 | 0 | bool unresolved_reloc; |
2186 | 0 | bfd_reloc_status_type r; |
2187 | 0 | struct bfd_link_hash_entry *sbh; |
2188 | 0 | bool is_rel; |
2189 | 0 | bool res; |
2190 | |
|
2191 | 0 | r_type = ELF32_R_TYPE (rel->r_info); |
2192 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
2193 | |
|
2194 | 0 | is_rel = elf32_tic6x_rel_relocation_p (input_bfd, input_section, |
2195 | 0 | relocs, rel); |
2196 | |
|
2197 | 0 | if (is_rel) |
2198 | 0 | res = elf32_tic6x_info_to_howto_rel (input_bfd, &bfd_reloc, rel); |
2199 | 0 | else |
2200 | 0 | res = elf32_tic6x_info_to_howto (input_bfd, &bfd_reloc, rel); |
2201 | |
|
2202 | 0 | if (!res || (howto = bfd_reloc.howto) == NULL) |
2203 | 0 | { |
2204 | 0 | bfd_set_error (bfd_error_bad_value); |
2205 | 0 | return false; |
2206 | 0 | } |
2207 | | |
2208 | 0 | h = NULL; |
2209 | 0 | sym = NULL; |
2210 | 0 | sec = NULL; |
2211 | 0 | unresolved_reloc = false; |
2212 | |
|
2213 | 0 | if (r_symndx < symtab_hdr->sh_info) |
2214 | 0 | { |
2215 | 0 | sym = local_syms + r_symndx; |
2216 | 0 | sec = local_sections[r_symndx]; |
2217 | 0 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
2218 | 0 | } |
2219 | 0 | else |
2220 | 0 | { |
2221 | 0 | bool warned, ignored; |
2222 | |
|
2223 | 0 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2224 | 0 | r_symndx, symtab_hdr, sym_hashes, |
2225 | 0 | h, sec, relocation, |
2226 | 0 | unresolved_reloc, warned, ignored); |
2227 | 0 | } |
2228 | | |
2229 | 0 | if (sec != NULL && discarded_section (sec)) |
2230 | 0 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
2231 | 0 | rel, 1, relend, howto, 0, contents); |
2232 | |
|
2233 | 0 | if (bfd_link_relocatable (info)) |
2234 | 0 | { |
2235 | 0 | if (is_rel |
2236 | 0 | && sym != NULL |
2237 | 0 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
2238 | 0 | { |
2239 | 0 | rel->r_addend = 0; |
2240 | 0 | relocation = sec->output_offset + sym->st_value; |
2241 | 0 | r = _bfd_relocate_contents (howto, input_bfd, relocation, |
2242 | 0 | contents + rel->r_offset); |
2243 | 0 | goto done_reloc; |
2244 | 0 | } |
2245 | 0 | continue; |
2246 | 0 | } |
2247 | | |
2248 | 0 | switch (r_type) |
2249 | 0 | { |
2250 | 0 | case R_C6000_NONE: |
2251 | 0 | case R_C6000_ALIGN: |
2252 | 0 | case R_C6000_FPHEAD: |
2253 | 0 | case R_C6000_NOCMP: |
2254 | | /* No action needed. */ |
2255 | 0 | continue; |
2256 | | |
2257 | 0 | case R_C6000_PCR_S21: |
2258 | | /* A branch to an undefined weak symbol is turned into a |
2259 | | "b .s2 B3" instruction if the existing insn is of the |
2260 | | form "b .s2 symbol". */ |
2261 | 0 | if (h ? h->root.type == bfd_link_hash_undefweak |
2262 | 0 | && (htab->elf.splt == NULL || h->plt.offset == (bfd_vma) -1) |
2263 | 0 | : r_symndx != STN_UNDEF && bfd_is_und_section (sec)) |
2264 | 0 | { |
2265 | 0 | unsigned long oldval; |
2266 | 0 | oldval = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2267 | |
|
2268 | 0 | if ((oldval & 0x7e) == 0x12) |
2269 | 0 | { |
2270 | 0 | oldval &= 0xF0000001; |
2271 | 0 | bfd_put_32 (input_bfd, oldval | 0x000c0362, |
2272 | 0 | contents + rel->r_offset); |
2273 | 0 | r = bfd_reloc_ok; |
2274 | 0 | goto done_reloc; |
2275 | 0 | } |
2276 | 0 | } |
2277 | | /* Fall through. */ |
2278 | | |
2279 | 0 | case R_C6000_PCR_S12: |
2280 | 0 | case R_C6000_PCR_S10: |
2281 | 0 | case R_C6000_PCR_S7: |
2282 | 0 | if (h != NULL |
2283 | 0 | && h->plt.offset != (bfd_vma) -1 |
2284 | 0 | && htab->elf.splt != NULL) |
2285 | 0 | { |
2286 | 0 | relocation = (htab->elf.splt->output_section->vma |
2287 | 0 | + htab->elf.splt->output_offset |
2288 | 0 | + h->plt.offset); |
2289 | 0 | } |
2290 | | |
2291 | | /* Generic PC-relative handling produces a value relative to |
2292 | | the exact location of the relocation. Adjust it to be |
2293 | | relative to the start of the fetch packet instead. */ |
2294 | 0 | relocation += (input_section->output_section->vma |
2295 | 0 | + input_section->output_offset |
2296 | 0 | + rel->r_offset) & 0x1f; |
2297 | 0 | unresolved_reloc = false; |
2298 | 0 | break; |
2299 | | |
2300 | 0 | case R_C6000_PCR_H16: |
2301 | 0 | case R_C6000_PCR_L16: |
2302 | 0 | off = (input_section->output_section->vma |
2303 | 0 | + input_section->output_offset |
2304 | 0 | + rel->r_offset); |
2305 | | /* These must be calculated as R = S - FP(FP(PC) - A). |
2306 | | PC, here, is the value we just computed in OFF. RELOCATION |
2307 | | has the address of S + A. */ |
2308 | 0 | relocation -= rel->r_addend; |
2309 | 0 | off2 = ((off & ~(bfd_vma)0x1f) - rel->r_addend) & (bfd_vma)~0x1f; |
2310 | 0 | off2 = relocation - off2; |
2311 | 0 | relocation = off + off2; |
2312 | 0 | break; |
2313 | | |
2314 | 0 | case R_C6000_DSBT_INDEX: |
2315 | 0 | relocation = elf32_tic6x_hash_table (info)->params.dsbt_index; |
2316 | 0 | if (!bfd_link_pic (info) || relocation != 0) |
2317 | 0 | break; |
2318 | | |
2319 | | /* fall through */ |
2320 | 0 | case R_C6000_ABS32: |
2321 | 0 | case R_C6000_ABS16: |
2322 | 0 | case R_C6000_ABS8: |
2323 | 0 | case R_C6000_ABS_S16: |
2324 | 0 | case R_C6000_ABS_L16: |
2325 | 0 | case R_C6000_ABS_H16: |
2326 | | /* When generating a shared object or relocatable executable, these |
2327 | | relocations are copied into the output file to be resolved at |
2328 | | run time. */ |
2329 | 0 | if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (output_bfd)) |
2330 | 0 | && (input_section->flags & SEC_ALLOC) |
2331 | 0 | && (h == NULL |
2332 | 0 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2333 | 0 | || h->root.type != bfd_link_hash_undefweak)) |
2334 | 0 | { |
2335 | 0 | Elf_Internal_Rela outrel; |
2336 | 0 | bool skip, relocate; |
2337 | 0 | asection *sreloc; |
2338 | |
|
2339 | 0 | unresolved_reloc = false; |
2340 | |
|
2341 | 0 | sreloc = elf_section_data (input_section)->sreloc; |
2342 | 0 | BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL); |
2343 | |
|
2344 | 0 | skip = false; |
2345 | 0 | relocate = false; |
2346 | |
|
2347 | 0 | outrel.r_offset = |
2348 | 0 | _bfd_elf_section_offset (output_bfd, info, input_section, |
2349 | 0 | rel->r_offset); |
2350 | 0 | if (outrel.r_offset == (bfd_vma) -1) |
2351 | 0 | skip = true; |
2352 | 0 | else if (outrel.r_offset == (bfd_vma) -2) |
2353 | 0 | skip = true, relocate = true; |
2354 | 0 | outrel.r_offset += (input_section->output_section->vma |
2355 | 0 | + input_section->output_offset); |
2356 | |
|
2357 | 0 | if (skip) |
2358 | 0 | memset (&outrel, 0, sizeof outrel); |
2359 | 0 | else if (h != NULL |
2360 | 0 | && h->dynindx != -1 |
2361 | 0 | && (!bfd_link_pic (info) |
2362 | 0 | || !SYMBOLIC_BIND (info, h) |
2363 | 0 | || !h->def_regular)) |
2364 | 0 | { |
2365 | 0 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
2366 | 0 | outrel.r_addend = rel->r_addend; |
2367 | 0 | } |
2368 | 0 | else |
2369 | 0 | { |
2370 | 0 | long indx; |
2371 | |
|
2372 | 0 | outrel.r_addend = relocation + rel->r_addend; |
2373 | |
|
2374 | 0 | if (bfd_is_abs_section (sec)) |
2375 | 0 | indx = 0; |
2376 | 0 | else if (sec == NULL || sec->owner == NULL) |
2377 | 0 | { |
2378 | 0 | bfd_set_error (bfd_error_bad_value); |
2379 | 0 | return false; |
2380 | 0 | } |
2381 | 0 | else |
2382 | 0 | { |
2383 | 0 | asection *osec; |
2384 | |
|
2385 | 0 | osec = sec->output_section; |
2386 | 0 | indx = elf_section_data (osec)->dynindx; |
2387 | 0 | outrel.r_addend -= osec->vma; |
2388 | 0 | BFD_ASSERT (indx != 0); |
2389 | 0 | } |
2390 | | |
2391 | 0 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
2392 | 0 | } |
2393 | | |
2394 | 0 | elf32_tic6x_install_rela (output_bfd, sreloc, &outrel); |
2395 | | |
2396 | | /* If this reloc is against an external symbol, we do not want to |
2397 | | fiddle with the addend. Otherwise, we need to include the symbol |
2398 | | value so that it becomes an addend for the dynamic reloc. */ |
2399 | 0 | if (! relocate) |
2400 | 0 | continue; |
2401 | 0 | } |
2402 | | |
2403 | | /* Generic logic OK. */ |
2404 | 0 | break; |
2405 | | |
2406 | 0 | case R_C6000_SBR_U15_B: |
2407 | 0 | case R_C6000_SBR_U15_H: |
2408 | 0 | case R_C6000_SBR_U15_W: |
2409 | 0 | case R_C6000_SBR_S16: |
2410 | 0 | case R_C6000_SBR_L16_B: |
2411 | 0 | case R_C6000_SBR_L16_H: |
2412 | 0 | case R_C6000_SBR_L16_W: |
2413 | 0 | case R_C6000_SBR_H16_B: |
2414 | 0 | case R_C6000_SBR_H16_H: |
2415 | 0 | case R_C6000_SBR_H16_W: |
2416 | 0 | sbh = bfd_link_hash_lookup (info->hash, "__c6xabi_DSBT_BASE", |
2417 | 0 | false, false, true); |
2418 | 0 | if (sbh != NULL |
2419 | 0 | && (sbh->type == bfd_link_hash_defined |
2420 | 0 | || sbh->type == bfd_link_hash_defweak)) |
2421 | 0 | { |
2422 | 0 | if (h ? (h->root.type == bfd_link_hash_undefweak |
2423 | 0 | && (htab->elf.splt == NULL |
2424 | 0 | || h->plt.offset == (bfd_vma) -1)) |
2425 | 0 | : r_symndx != STN_UNDEF && bfd_is_und_section (sec)) |
2426 | 0 | relocation = 0; |
2427 | 0 | else |
2428 | 0 | relocation -= (sbh->u.def.value |
2429 | 0 | + sbh->u.def.section->output_section->vma |
2430 | 0 | + sbh->u.def.section->output_offset); |
2431 | 0 | } |
2432 | 0 | else |
2433 | 0 | { |
2434 | 0 | _bfd_error_handler (_("%pB: SB-relative relocation but " |
2435 | 0 | "__c6xabi_DSBT_BASE not defined"), |
2436 | 0 | input_bfd); |
2437 | 0 | ok = false; |
2438 | 0 | continue; |
2439 | 0 | } |
2440 | 0 | break; |
2441 | | |
2442 | 0 | case R_C6000_SBR_GOT_U15_W: |
2443 | 0 | case R_C6000_SBR_GOT_L16_W: |
2444 | 0 | case R_C6000_SBR_GOT_H16_W: |
2445 | 0 | case R_C6000_EHTYPE: |
2446 | | /* Relocation is to the entry for this symbol in the global |
2447 | | offset table. */ |
2448 | 0 | if (htab->elf.sgot == NULL) |
2449 | 0 | abort (); |
2450 | | |
2451 | 0 | if (h != NULL) |
2452 | 0 | { |
2453 | 0 | bool dyn; |
2454 | |
|
2455 | 0 | off = h->got.offset; |
2456 | 0 | dyn = htab->elf.dynamic_sections_created; |
2457 | 0 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2458 | 0 | bfd_link_pic (info), |
2459 | 0 | h) |
2460 | 0 | || (bfd_link_pic (info) |
2461 | 0 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2462 | 0 | || (ELF_ST_VISIBILITY (h->other) |
2463 | 0 | && h->root.type == bfd_link_hash_undefweak)) |
2464 | 0 | { |
2465 | | /* This is actually a static link, or it is a |
2466 | | -Bsymbolic link and the symbol is defined |
2467 | | locally, or the symbol was forced to be local |
2468 | | because of a version file. We must initialize |
2469 | | this entry in the global offset table. Since the |
2470 | | offset must always be a multiple of 4, we use the |
2471 | | least significant bit to record whether we have |
2472 | | initialized it already. |
2473 | | |
2474 | | When doing a dynamic link, we create a .rel.got |
2475 | | relocation entry to initialize the value. This |
2476 | | is done in the finish_dynamic_symbol routine. */ |
2477 | 0 | if ((off & 1) != 0) |
2478 | 0 | off &= ~1; |
2479 | 0 | else |
2480 | 0 | { |
2481 | 0 | bfd_put_32 (output_bfd, relocation, |
2482 | 0 | htab->elf.sgot->contents + off); |
2483 | 0 | h->got.offset |= 1; |
2484 | |
|
2485 | 0 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
2486 | 0 | bfd_link_pic (info), |
2487 | 0 | h) |
2488 | 0 | && !(ELF_ST_VISIBILITY (h->other) |
2489 | 0 | && h->root.type == bfd_link_hash_undefweak)) |
2490 | 0 | elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec, |
2491 | 0 | off); |
2492 | 0 | } |
2493 | 0 | } |
2494 | 0 | else |
2495 | 0 | unresolved_reloc = false; |
2496 | 0 | } |
2497 | 0 | else |
2498 | 0 | { |
2499 | 0 | if (local_got_offsets == NULL) |
2500 | 0 | abort (); |
2501 | | |
2502 | 0 | off = local_got_offsets[r_symndx]; |
2503 | | |
2504 | | /* The offset must always be a multiple of 4. We use |
2505 | | the least significant bit to record whether we have |
2506 | | already generated the necessary reloc. */ |
2507 | 0 | if ((off & 1) != 0) |
2508 | 0 | off &= ~1; |
2509 | 0 | else |
2510 | 0 | { |
2511 | 0 | bfd_put_32 (output_bfd, relocation, |
2512 | 0 | htab->elf.sgot->contents + off); |
2513 | |
|
2514 | 0 | if (bfd_link_pic (info) || elf32_tic6x_using_dsbt (output_bfd)) |
2515 | 0 | elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec, off); |
2516 | |
|
2517 | 0 | local_got_offsets[r_symndx] |= 1; |
2518 | 0 | } |
2519 | 0 | } |
2520 | | |
2521 | 0 | if (off >= (bfd_vma) -2) |
2522 | 0 | abort (); |
2523 | | |
2524 | 0 | if (htab->dsbt) |
2525 | 0 | relocation = (htab->elf.sgot->output_section->vma |
2526 | 0 | + htab->elf.sgot->output_offset + off |
2527 | 0 | - htab->dsbt->output_section->vma |
2528 | 0 | - htab->dsbt->output_offset); |
2529 | 0 | else |
2530 | 0 | relocation = (htab->elf.sgot->output_section->vma |
2531 | 0 | + htab->elf.sgot->output_offset + off |
2532 | 0 | - htab->elf.sgotplt->output_section->vma |
2533 | 0 | - htab->elf.sgotplt->output_offset); |
2534 | |
|
2535 | 0 | if (rel->r_addend != 0) |
2536 | 0 | { |
2537 | | /* We can't do anything for a relocation which is against |
2538 | | a symbol *plus offset*. GOT holds relocations for |
2539 | | symbols. Make this an error; the compiler isn't |
2540 | | allowed to pass us these kinds of things. */ |
2541 | 0 | if (h == NULL) |
2542 | 0 | _bfd_error_handler |
2543 | | /* xgettext:c-format */ |
2544 | 0 | (_("%pB, section %pA: relocation %s with non-zero addend %" |
2545 | 0 | PRId64 " against local symbol"), |
2546 | 0 | input_bfd, |
2547 | 0 | input_section, |
2548 | 0 | elf32_tic6x_howto_table[r_type].name, |
2549 | 0 | (int64_t) rel->r_addend); |
2550 | 0 | else |
2551 | 0 | _bfd_error_handler |
2552 | | /* xgettext:c-format */ |
2553 | 0 | (_("%pB, section %pA: relocation %s with non-zero addend %" |
2554 | 0 | PRId64 " against symbol `%s'"), |
2555 | 0 | input_bfd, |
2556 | 0 | input_section, |
2557 | 0 | elf32_tic6x_howto_table[r_type].name, |
2558 | 0 | (int64_t) rel->r_addend, |
2559 | 0 | h->root.root.string[0] != '\0' ? h->root.root.string |
2560 | 0 | : _("[whose name is lost]")); |
2561 | |
|
2562 | 0 | bfd_set_error (bfd_error_bad_value); |
2563 | 0 | return false; |
2564 | 0 | } |
2565 | 0 | break; |
2566 | | |
2567 | 0 | case R_C6000_PREL31: |
2568 | 0 | if (h != NULL |
2569 | 0 | && h->plt.offset != (bfd_vma) -1 |
2570 | 0 | && htab->elf.splt != NULL) |
2571 | 0 | { |
2572 | 0 | relocation = (htab->elf.splt->output_section->vma |
2573 | 0 | + htab->elf.splt->output_offset |
2574 | 0 | + h->plt.offset); |
2575 | 0 | } |
2576 | 0 | break; |
2577 | | |
2578 | 0 | case R_C6000_COPY: |
2579 | | /* Invalid in relocatable object. */ |
2580 | 0 | default: |
2581 | | /* Unknown relocation. */ |
2582 | | /* xgettext:c-format */ |
2583 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
2584 | 0 | input_bfd, r_type); |
2585 | 0 | bfd_set_error (bfd_error_bad_value); |
2586 | 0 | ok = false; |
2587 | 0 | continue; |
2588 | 0 | } |
2589 | | |
2590 | 0 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
2591 | 0 | contents, rel->r_offset, |
2592 | 0 | relocation, rel->r_addend); |
2593 | |
|
2594 | 0 | done_reloc: |
2595 | 0 | if (r == bfd_reloc_ok |
2596 | 0 | && howto->complain_on_overflow == complain_overflow_bitfield) |
2597 | 0 | { |
2598 | | /* Generic overflow handling accepts cases the ABI says |
2599 | | should be rejected for R_C6000_ABS16 and |
2600 | | R_C6000_ABS8. */ |
2601 | 0 | bfd_vma value = (relocation + rel->r_addend) & 0xffffffff; |
2602 | 0 | bfd_vma sbit = 1 << (howto->bitsize - 1); |
2603 | 0 | bfd_vma sbits = (-(bfd_vma) sbit) & 0xffffffff; |
2604 | 0 | bfd_vma value_sbits = value & sbits; |
2605 | |
|
2606 | 0 | if (value_sbits != 0 |
2607 | 0 | && value_sbits != sbit |
2608 | 0 | && value_sbits != sbits) |
2609 | 0 | r = bfd_reloc_overflow; |
2610 | 0 | } |
2611 | |
|
2612 | 0 | if (r != bfd_reloc_ok) |
2613 | 0 | { |
2614 | 0 | const char *name; |
2615 | 0 | const char *error_message; |
2616 | |
|
2617 | 0 | if (h != NULL) |
2618 | 0 | name = h->root.root.string; |
2619 | 0 | else |
2620 | 0 | { |
2621 | 0 | name = bfd_elf_string_from_elf_section (input_bfd, |
2622 | 0 | symtab_hdr->sh_link, |
2623 | 0 | sym->st_name); |
2624 | 0 | if (name == NULL) |
2625 | 0 | return false; |
2626 | 0 | if (*name == '\0') |
2627 | 0 | name = bfd_section_name (sec); |
2628 | 0 | } |
2629 | | |
2630 | 0 | switch (r) |
2631 | 0 | { |
2632 | 0 | case bfd_reloc_overflow: |
2633 | | /* If the overflowing reloc was to an undefined symbol, |
2634 | | we have already printed one error message and there |
2635 | | is no point complaining again. */ |
2636 | 0 | if (!h || h->root.type != bfd_link_hash_undefined) |
2637 | 0 | (*info->callbacks->reloc_overflow) |
2638 | 0 | (info, (h ? &h->root : NULL), name, howto->name, |
2639 | 0 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
2640 | 0 | break; |
2641 | | |
2642 | 0 | case bfd_reloc_undefined: |
2643 | 0 | (*info->callbacks->undefined_symbol) (info, name, input_bfd, |
2644 | 0 | input_section, |
2645 | 0 | rel->r_offset, true); |
2646 | 0 | break; |
2647 | | |
2648 | 0 | case bfd_reloc_outofrange: |
2649 | 0 | error_message = _("out of range"); |
2650 | 0 | goto common_error; |
2651 | | |
2652 | 0 | case bfd_reloc_notsupported: |
2653 | 0 | error_message = _("unsupported relocation"); |
2654 | 0 | goto common_error; |
2655 | | |
2656 | 0 | case bfd_reloc_dangerous: |
2657 | 0 | error_message = _("dangerous relocation"); |
2658 | 0 | goto common_error; |
2659 | | |
2660 | 0 | default: |
2661 | 0 | error_message = _("unknown error"); |
2662 | | /* Fall through. */ |
2663 | |
|
2664 | 0 | common_error: |
2665 | 0 | BFD_ASSERT (error_message != NULL); |
2666 | 0 | (*info->callbacks->reloc_dangerous) |
2667 | 0 | (info, error_message, input_bfd, input_section, rel->r_offset); |
2668 | 0 | break; |
2669 | 0 | } |
2670 | 0 | } |
2671 | 0 | } |
2672 | | |
2673 | 0 | return ok; |
2674 | 0 | } |
2675 | | |
2676 | | |
2677 | | /* Look through the relocs for a section during the first phase, and |
2678 | | calculate needed space in the global offset table, procedure linkage |
2679 | | table, and dynamic reloc sections. */ |
2680 | | |
2681 | | static bool |
2682 | | elf32_tic6x_check_relocs (bfd *abfd, struct bfd_link_info *info, |
2683 | | asection *sec, const Elf_Internal_Rela *relocs) |
2684 | 0 | { |
2685 | 0 | struct elf32_tic6x_link_hash_table *htab; |
2686 | 0 | Elf_Internal_Shdr *symtab_hdr; |
2687 | 0 | struct elf_link_hash_entry **sym_hashes; |
2688 | 0 | const Elf_Internal_Rela *rel; |
2689 | 0 | const Elf_Internal_Rela *rel_end; |
2690 | 0 | asection *sreloc; |
2691 | |
|
2692 | 0 | if (bfd_link_relocatable (info)) |
2693 | 0 | return true; |
2694 | | |
2695 | 0 | htab = elf32_tic6x_hash_table (info); |
2696 | 0 | symtab_hdr = &elf_symtab_hdr (abfd); |
2697 | 0 | sym_hashes = elf_sym_hashes (abfd); |
2698 | | |
2699 | | /* Create dynamic sections for relocatable executables so that we can |
2700 | | copy relocations. */ |
2701 | 0 | if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (abfd)) |
2702 | 0 | && ! htab->elf.dynamic_sections_created) |
2703 | 0 | { |
2704 | 0 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
2705 | 0 | return false; |
2706 | 0 | } |
2707 | | |
2708 | 0 | sreloc = NULL; |
2709 | |
|
2710 | 0 | rel_end = relocs + sec->reloc_count; |
2711 | 0 | for (rel = relocs; rel < rel_end; rel++) |
2712 | 0 | { |
2713 | 0 | unsigned int r_type; |
2714 | 0 | unsigned int r_symndx; |
2715 | 0 | struct elf_link_hash_entry *h; |
2716 | 0 | Elf_Internal_Sym *isym; |
2717 | |
|
2718 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
2719 | 0 | r_type = ELF32_R_TYPE (rel->r_info); |
2720 | |
|
2721 | 0 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
2722 | 0 | { |
2723 | | /* xgettext:c-format */ |
2724 | 0 | _bfd_error_handler (_("%pB: bad symbol index: %d"), |
2725 | 0 | abfd, r_symndx); |
2726 | 0 | return false; |
2727 | 0 | } |
2728 | | |
2729 | 0 | if (r_symndx < symtab_hdr->sh_info) |
2730 | 0 | { |
2731 | | /* A local symbol. */ |
2732 | 0 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
2733 | 0 | abfd, r_symndx); |
2734 | 0 | if (isym == NULL) |
2735 | 0 | return false; |
2736 | 0 | h = NULL; |
2737 | 0 | } |
2738 | 0 | else |
2739 | 0 | { |
2740 | 0 | isym = NULL; |
2741 | 0 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
2742 | 0 | while (h->root.type == bfd_link_hash_indirect |
2743 | 0 | || h->root.type == bfd_link_hash_warning) |
2744 | 0 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
2745 | 0 | } |
2746 | | |
2747 | 0 | switch (r_type) |
2748 | 0 | { |
2749 | 0 | case R_C6000_PCR_S21: |
2750 | 0 | case R_C6000_PREL31: |
2751 | | /* This symbol requires a procedure linkage table entry. We |
2752 | | actually build the entry in adjust_dynamic_symbol, |
2753 | | because this might be a case of linking PIC code which is |
2754 | | never referenced by a dynamic object, in which case we |
2755 | | don't need to generate a procedure linkage table entry |
2756 | | after all. */ |
2757 | | |
2758 | | /* If this is a local symbol, we resolve it directly without |
2759 | | creating a procedure linkage table entry. */ |
2760 | 0 | if (h == NULL) |
2761 | 0 | continue; |
2762 | | |
2763 | 0 | h->needs_plt = 1; |
2764 | 0 | h->plt.refcount += 1; |
2765 | 0 | break; |
2766 | | |
2767 | 0 | case R_C6000_SBR_GOT_U15_W: |
2768 | 0 | case R_C6000_SBR_GOT_L16_W: |
2769 | 0 | case R_C6000_SBR_GOT_H16_W: |
2770 | 0 | case R_C6000_EHTYPE: |
2771 | | /* This symbol requires a global offset table entry. */ |
2772 | 0 | if (h != NULL) |
2773 | 0 | { |
2774 | 0 | h->got.refcount += 1; |
2775 | 0 | } |
2776 | 0 | else |
2777 | 0 | { |
2778 | 0 | bfd_signed_vma *local_got_refcounts; |
2779 | | |
2780 | | /* This is a global offset table entry for a local symbol. */ |
2781 | 0 | local_got_refcounts = elf_local_got_refcounts (abfd); |
2782 | 0 | if (local_got_refcounts == NULL) |
2783 | 0 | { |
2784 | 0 | bfd_size_type size; |
2785 | |
|
2786 | 0 | size = symtab_hdr->sh_info; |
2787 | 0 | size *= (sizeof (bfd_signed_vma) |
2788 | 0 | + sizeof (bfd_vma) + sizeof(char)); |
2789 | 0 | local_got_refcounts = bfd_zalloc (abfd, size); |
2790 | 0 | if (local_got_refcounts == NULL) |
2791 | 0 | return false; |
2792 | 0 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
2793 | 0 | } |
2794 | 0 | local_got_refcounts[r_symndx] += 1; |
2795 | 0 | } |
2796 | | |
2797 | 0 | if (htab->elf.sgot == NULL) |
2798 | 0 | { |
2799 | 0 | if (htab->elf.dynobj == NULL) |
2800 | 0 | htab->elf.dynobj = abfd; |
2801 | 0 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
2802 | 0 | return false; |
2803 | 0 | } |
2804 | 0 | break; |
2805 | | |
2806 | 0 | case R_C6000_DSBT_INDEX: |
2807 | | /* We'd like to check for nonzero dsbt_index here, but it's |
2808 | | set up only after check_relocs is called. Instead, we |
2809 | | store the number of R_C6000_DSBT_INDEX relocs in the |
2810 | | pc_count field, and potentially discard the extra space |
2811 | | in elf32_tic6x_allocate_dynrelocs. */ |
2812 | 0 | if (!bfd_link_pic (info)) |
2813 | 0 | break; |
2814 | | |
2815 | | /* fall through */ |
2816 | 0 | case R_C6000_ABS32: |
2817 | 0 | case R_C6000_ABS16: |
2818 | 0 | case R_C6000_ABS8: |
2819 | 0 | case R_C6000_ABS_S16: |
2820 | 0 | case R_C6000_ABS_L16: |
2821 | 0 | case R_C6000_ABS_H16: |
2822 | | /* If we are creating a shared library, and this is a reloc |
2823 | | against a global symbol, or a non PC relative reloc |
2824 | | against a local symbol, then we need to copy the reloc |
2825 | | into the shared library. However, if we are linking with |
2826 | | -Bsymbolic, we do not need to copy a reloc against a |
2827 | | global symbol which is defined in an object we are |
2828 | | including in the link (i.e., DEF_REGULAR is set). At |
2829 | | this point we have not seen all the input files, so it is |
2830 | | possible that DEF_REGULAR is not set now but will be set |
2831 | | later (it is never cleared). In case of a weak definition, |
2832 | | DEF_REGULAR may be cleared later by a strong definition in |
2833 | | a shared library. We account for that possibility below by |
2834 | | storing information in the relocs_copied field of the hash |
2835 | | table entry. A similar situation occurs when creating |
2836 | | shared libraries and symbol visibility changes render the |
2837 | | symbol local. |
2838 | | |
2839 | | If on the other hand, we are creating an executable, we |
2840 | | may need to keep relocations for symbols satisfied by a |
2841 | | dynamic library if we manage to avoid copy relocs for the |
2842 | | symbol. */ |
2843 | 0 | if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (abfd)) |
2844 | 0 | && (sec->flags & SEC_ALLOC) != 0) |
2845 | 0 | { |
2846 | 0 | struct elf_dyn_relocs *p; |
2847 | 0 | struct elf_dyn_relocs **head; |
2848 | | |
2849 | | /* We must copy these reloc types into the output file. |
2850 | | Create a reloc section in dynobj and make room for |
2851 | | this reloc. */ |
2852 | 0 | if (sreloc == NULL) |
2853 | 0 | { |
2854 | 0 | if (htab->elf.dynobj == NULL) |
2855 | 0 | htab->elf.dynobj = abfd; |
2856 | |
|
2857 | 0 | sreloc = _bfd_elf_make_dynamic_reloc_section |
2858 | 0 | (sec, htab->elf.dynobj, 2, abfd, /*rela? */ true); |
2859 | |
|
2860 | 0 | if (sreloc == NULL) |
2861 | 0 | return false; |
2862 | 0 | } |
2863 | | |
2864 | | /* If this is a global symbol, we count the number of |
2865 | | relocations we need for this symbol. */ |
2866 | 0 | if (h != NULL) |
2867 | 0 | { |
2868 | 0 | head = &h->dyn_relocs; |
2869 | 0 | } |
2870 | 0 | else |
2871 | 0 | { |
2872 | | /* Track dynamic relocs needed for local syms too. |
2873 | | We really need local syms available to do this |
2874 | | easily. Oh well. */ |
2875 | 0 | void **vpp; |
2876 | 0 | asection *s; |
2877 | |
|
2878 | 0 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2879 | 0 | if (s == NULL) |
2880 | 0 | s = sec; |
2881 | |
|
2882 | 0 | vpp = &elf_section_data (s)->local_dynrel; |
2883 | 0 | head = (struct elf_dyn_relocs **)vpp; |
2884 | 0 | } |
2885 | |
|
2886 | 0 | p = *head; |
2887 | 0 | if (p == NULL || p->sec != sec) |
2888 | 0 | { |
2889 | 0 | size_t amt = sizeof *p; |
2890 | 0 | p = bfd_alloc (htab->elf.dynobj, amt); |
2891 | 0 | if (p == NULL) |
2892 | 0 | return false; |
2893 | 0 | p->next = *head; |
2894 | 0 | *head = p; |
2895 | 0 | p->sec = sec; |
2896 | 0 | p->count = 0; |
2897 | 0 | p->pc_count = 0; |
2898 | 0 | } |
2899 | | |
2900 | 0 | p->count += 1; |
2901 | 0 | if (r_type == R_C6000_DSBT_INDEX) |
2902 | 0 | p->pc_count += 1; |
2903 | 0 | } |
2904 | 0 | break; |
2905 | | |
2906 | 0 | case R_C6000_SBR_U15_B: |
2907 | 0 | case R_C6000_SBR_U15_H: |
2908 | 0 | case R_C6000_SBR_U15_W: |
2909 | 0 | case R_C6000_SBR_S16: |
2910 | 0 | case R_C6000_SBR_L16_B: |
2911 | 0 | case R_C6000_SBR_L16_H: |
2912 | 0 | case R_C6000_SBR_L16_W: |
2913 | 0 | case R_C6000_SBR_H16_B: |
2914 | 0 | case R_C6000_SBR_H16_H: |
2915 | 0 | case R_C6000_SBR_H16_W: |
2916 | 0 | { |
2917 | | /* These relocations implicitly reference __c6xabi_DSBT_BASE. |
2918 | | Add an explicit reference so that the symbol will be |
2919 | | provided by a linker script. */ |
2920 | 0 | struct bfd_link_hash_entry *bh = NULL; |
2921 | 0 | if (!_bfd_generic_link_add_one_symbol (info, abfd, |
2922 | 0 | "__c6xabi_DSBT_BASE", |
2923 | 0 | BSF_GLOBAL, |
2924 | 0 | bfd_und_section_ptr, 0, |
2925 | 0 | NULL, false, false, &bh)) |
2926 | 0 | return false; |
2927 | 0 | ((struct elf_link_hash_entry *) bh)->non_elf = 0; |
2928 | 0 | } |
2929 | 0 | if (h != NULL && bfd_link_executable (info)) |
2930 | 0 | { |
2931 | | /* For B14-relative addresses, we might need a copy |
2932 | | reloc. */ |
2933 | 0 | h->non_got_ref = 1; |
2934 | 0 | } |
2935 | 0 | break; |
2936 | | |
2937 | 0 | default: |
2938 | 0 | break; |
2939 | 0 | } |
2940 | 0 | } |
2941 | | |
2942 | 0 | return true; |
2943 | 0 | } |
2944 | | |
2945 | | static bool |
2946 | | elf32_tic6x_add_symbol_hook (bfd *abfd, |
2947 | | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2948 | | Elf_Internal_Sym *sym, |
2949 | | const char **namep ATTRIBUTE_UNUSED, |
2950 | | flagword *flagsp ATTRIBUTE_UNUSED, |
2951 | | asection **secp, |
2952 | | bfd_vma *valp) |
2953 | 0 | { |
2954 | 0 | switch (sym->st_shndx) |
2955 | 0 | { |
2956 | 0 | case SHN_TIC6X_SCOMMON: |
2957 | 0 | *secp = bfd_make_section_old_way (abfd, ".scommon"); |
2958 | 0 | (*secp)->flags |= SEC_IS_COMMON | SEC_SMALL_DATA; |
2959 | 0 | *valp = sym->st_size; |
2960 | 0 | bfd_set_section_alignment (*secp, bfd_log2 (sym->st_value)); |
2961 | 0 | break; |
2962 | 0 | } |
2963 | | |
2964 | 0 | return true; |
2965 | 0 | } |
2966 | | |
2967 | | static void |
2968 | | elf32_tic6x_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) |
2969 | 0 | { |
2970 | 0 | elf_symbol_type *elfsym; |
2971 | |
|
2972 | 0 | elfsym = (elf_symbol_type *) asym; |
2973 | 0 | switch (elfsym->internal_elf_sym.st_shndx) |
2974 | 0 | { |
2975 | 0 | case SHN_TIC6X_SCOMMON: |
2976 | 0 | asym->section = &tic6x_elf_scom_section; |
2977 | 0 | asym->value = elfsym->internal_elf_sym.st_size; |
2978 | 0 | break; |
2979 | 0 | } |
2980 | 0 | } |
2981 | | |
2982 | | static int |
2983 | | elf32_tic6x_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
2984 | | const char *name ATTRIBUTE_UNUSED, |
2985 | | Elf_Internal_Sym *sym, |
2986 | | asection *input_sec, |
2987 | | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) |
2988 | 0 | { |
2989 | | /* If we see a common symbol, which implies a relocatable link, then |
2990 | | if a symbol was small common in an input file, mark it as small |
2991 | | common in the output file. */ |
2992 | 0 | if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0) |
2993 | 0 | sym->st_shndx = SHN_TIC6X_SCOMMON; |
2994 | |
|
2995 | 0 | return 1; |
2996 | 0 | } |
2997 | | |
2998 | | static bool |
2999 | | elf32_tic6x_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
3000 | | asection *sec, |
3001 | | int *retval) |
3002 | 0 | { |
3003 | 0 | if (strcmp (bfd_section_name (sec), ".scommon") == 0) |
3004 | 0 | { |
3005 | 0 | *retval = SHN_TIC6X_SCOMMON; |
3006 | 0 | return true; |
3007 | 0 | } |
3008 | | |
3009 | 0 | return false; |
3010 | 0 | } |
3011 | | |
3012 | | /* Allocate space in .plt, .got and associated reloc sections for |
3013 | | dynamic relocs. */ |
3014 | | |
3015 | | static bool |
3016 | | elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
3017 | 0 | { |
3018 | 0 | struct bfd_link_info *info; |
3019 | 0 | struct elf32_tic6x_link_hash_table *htab; |
3020 | 0 | struct elf_dyn_relocs *p; |
3021 | |
|
3022 | 0 | if (h->root.type == bfd_link_hash_indirect) |
3023 | 0 | return true; |
3024 | | |
3025 | 0 | info = (struct bfd_link_info *) inf; |
3026 | 0 | htab = elf32_tic6x_hash_table (info); |
3027 | |
|
3028 | 0 | if (htab->elf.dynamic_sections_created && h->plt.refcount > 0) |
3029 | 0 | { |
3030 | | /* Make sure this symbol is output as a dynamic symbol. |
3031 | | Undefined weak syms won't yet be marked as dynamic. */ |
3032 | 0 | if (h->dynindx == -1 && !h->forced_local) |
3033 | 0 | { |
3034 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
3035 | 0 | return false; |
3036 | 0 | } |
3037 | | |
3038 | 0 | if (bfd_link_pic (info) |
3039 | 0 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
3040 | 0 | { |
3041 | 0 | asection *s = htab->elf.splt; |
3042 | | |
3043 | | /* If this is the first .plt entry, make room for the special |
3044 | | first entry. */ |
3045 | 0 | if (s->size == 0) |
3046 | 0 | s->size += PLT_ENTRY_SIZE; |
3047 | |
|
3048 | 0 | h->plt.offset = s->size; |
3049 | | |
3050 | | /* If this symbol is not defined in a regular file, and we are |
3051 | | not generating a shared library, then set the symbol to this |
3052 | | location in the .plt. This is required to make function |
3053 | | pointers compare as equal between the normal executable and |
3054 | | the shared library. */ |
3055 | 0 | if (! bfd_link_pic (info) && !h->def_regular) |
3056 | 0 | { |
3057 | 0 | h->root.u.def.section = s; |
3058 | 0 | h->root.u.def.value = h->plt.offset; |
3059 | 0 | } |
3060 | | |
3061 | | /* Make room for this entry. */ |
3062 | 0 | s->size += PLT_ENTRY_SIZE; |
3063 | | /* We also need to make an entry in the .got.plt section, which |
3064 | | will be placed in the .got section by the linker script. */ |
3065 | 0 | htab->elf.sgotplt->size += 4; |
3066 | | /* We also need to make an entry in the .rel.plt section. */ |
3067 | 0 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); |
3068 | 0 | } |
3069 | 0 | else |
3070 | 0 | { |
3071 | 0 | h->plt.offset = (bfd_vma) -1; |
3072 | 0 | h->needs_plt = 0; |
3073 | 0 | } |
3074 | 0 | } |
3075 | 0 | else |
3076 | 0 | { |
3077 | 0 | h->plt.offset = (bfd_vma) -1; |
3078 | 0 | h->needs_plt = 0; |
3079 | 0 | } |
3080 | | |
3081 | 0 | if (h->got.refcount > 0) |
3082 | 0 | { |
3083 | 0 | asection *s; |
3084 | | |
3085 | | /* Make sure this symbol is output as a dynamic symbol. |
3086 | | Undefined weak syms won't yet be marked as dynamic. */ |
3087 | 0 | if (h->dynindx == -1 |
3088 | 0 | && !h->forced_local) |
3089 | 0 | { |
3090 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
3091 | 0 | return false; |
3092 | 0 | } |
3093 | | |
3094 | 0 | s = htab->elf.sgot; |
3095 | 0 | h->got.offset = s->size; |
3096 | 0 | s->size += 4; |
3097 | |
|
3098 | 0 | if (!(ELF_ST_VISIBILITY (h->other) |
3099 | 0 | && h->root.type == bfd_link_hash_undefweak)) |
3100 | 0 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
3101 | 0 | } |
3102 | 0 | else |
3103 | 0 | h->got.offset = (bfd_vma) -1; |
3104 | | |
3105 | 0 | if (h->dyn_relocs == NULL) |
3106 | 0 | return true; |
3107 | | |
3108 | | /* Discard relocs on undefined weak syms with non-default |
3109 | | visibility. */ |
3110 | 0 | if (bfd_link_pic (info) || elf32_tic6x_using_dsbt (htab->obfd)) |
3111 | 0 | { |
3112 | | /* We use the pc_count field to hold the number of |
3113 | | R_C6000_DSBT_INDEX relocs. */ |
3114 | 0 | if (htab->params.dsbt_index != 0) |
3115 | 0 | { |
3116 | 0 | struct elf_dyn_relocs **pp; |
3117 | |
|
3118 | 0 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
3119 | 0 | { |
3120 | 0 | p->count -= p->pc_count; |
3121 | 0 | p->pc_count = 0; |
3122 | 0 | if (p->count == 0) |
3123 | 0 | *pp = p->next; |
3124 | 0 | else |
3125 | 0 | pp = &p->next; |
3126 | 0 | } |
3127 | 0 | } |
3128 | |
|
3129 | 0 | if (h->dyn_relocs != NULL |
3130 | 0 | && h->root.type == bfd_link_hash_undefweak) |
3131 | 0 | { |
3132 | 0 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
3133 | 0 | h->dyn_relocs = NULL; |
3134 | | |
3135 | | /* Make sure undefined weak symbols are output as a dynamic |
3136 | | symbol in PIEs. */ |
3137 | 0 | else if (h->dynindx == -1 |
3138 | 0 | && !h->forced_local) |
3139 | 0 | { |
3140 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
3141 | 0 | return false; |
3142 | 0 | } |
3143 | 0 | } |
3144 | 0 | } |
3145 | | |
3146 | | /* Finally, allocate space. */ |
3147 | 0 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
3148 | 0 | { |
3149 | 0 | asection *sreloc; |
3150 | |
|
3151 | 0 | sreloc = elf_section_data (p->sec)->sreloc; |
3152 | |
|
3153 | 0 | BFD_ASSERT (sreloc != NULL); |
3154 | 0 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
3155 | 0 | } |
3156 | |
|
3157 | 0 | return true; |
3158 | 0 | } |
3159 | | |
3160 | | /* Set the sizes of the dynamic sections. */ |
3161 | | |
3162 | | static bool |
3163 | | elf32_tic6x_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
3164 | 0 | { |
3165 | 0 | struct elf32_tic6x_link_hash_table *htab; |
3166 | 0 | bfd *dynobj; |
3167 | 0 | asection *s; |
3168 | 0 | bool relocs; |
3169 | 0 | bfd *ibfd; |
3170 | |
|
3171 | 0 | htab = elf32_tic6x_hash_table (info); |
3172 | 0 | dynobj = htab->elf.dynobj; |
3173 | 0 | if (dynobj == NULL) |
3174 | 0 | abort (); |
3175 | | |
3176 | 0 | if (htab->elf.dynamic_sections_created) |
3177 | 0 | { |
3178 | | /* Set the contents of the .interp section to the interpreter. */ |
3179 | 0 | if (bfd_link_executable (info) && !info->nointerp) |
3180 | 0 | { |
3181 | 0 | s = bfd_get_linker_section (dynobj, ".interp"); |
3182 | 0 | if (s == NULL) |
3183 | 0 | abort (); |
3184 | 0 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
3185 | 0 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3186 | 0 | } |
3187 | 0 | } |
3188 | | |
3189 | | /* Set up .got offsets for local syms, and space for local dynamic |
3190 | | relocs. */ |
3191 | 0 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
3192 | 0 | { |
3193 | 0 | bfd_signed_vma *local_got; |
3194 | 0 | bfd_signed_vma *end_local_got; |
3195 | 0 | bfd_size_type locsymcount; |
3196 | 0 | Elf_Internal_Shdr *symtab_hdr; |
3197 | 0 | asection *srel; |
3198 | |
|
3199 | 0 | for (s = ibfd->sections; s != NULL; s = s->next) |
3200 | 0 | { |
3201 | 0 | struct elf_dyn_relocs *p; |
3202 | |
|
3203 | 0 | for (p = ((struct elf_dyn_relocs *) |
3204 | 0 | elf_section_data (s)->local_dynrel); |
3205 | 0 | p != NULL; |
3206 | 0 | p = p->next) |
3207 | 0 | { |
3208 | 0 | if (!bfd_is_abs_section (p->sec) |
3209 | 0 | && bfd_is_abs_section (p->sec->output_section)) |
3210 | 0 | { |
3211 | | /* Input section has been discarded, either because |
3212 | | it is a copy of a linkonce section or due to |
3213 | | linker script /DISCARD/, so we'll be discarding |
3214 | | the relocs too. */ |
3215 | 0 | } |
3216 | 0 | else if (p->count != 0) |
3217 | 0 | { |
3218 | 0 | srel = elf_section_data (p->sec)->sreloc; |
3219 | 0 | srel->size += p->count * sizeof (Elf32_External_Rela); |
3220 | 0 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
3221 | 0 | info->flags |= DF_TEXTREL; |
3222 | 0 | } |
3223 | 0 | } |
3224 | 0 | } |
3225 | |
|
3226 | 0 | local_got = elf_local_got_refcounts (ibfd); |
3227 | 0 | if (!local_got) |
3228 | 0 | continue; |
3229 | | |
3230 | 0 | symtab_hdr = &elf_symtab_hdr (ibfd); |
3231 | 0 | locsymcount = symtab_hdr->sh_info; |
3232 | 0 | end_local_got = local_got + locsymcount; |
3233 | 0 | s = htab->elf.sgot; |
3234 | 0 | srel = htab->elf.srelgot; |
3235 | 0 | for (; local_got < end_local_got; ++local_got) |
3236 | 0 | { |
3237 | 0 | if (*local_got > 0) |
3238 | 0 | { |
3239 | 0 | *local_got = s->size; |
3240 | 0 | s->size += 4; |
3241 | |
|
3242 | 0 | if (bfd_link_pic (info) || elf32_tic6x_using_dsbt (output_bfd)) |
3243 | 0 | { |
3244 | 0 | srel->size += sizeof (Elf32_External_Rela); |
3245 | 0 | } |
3246 | 0 | } |
3247 | 0 | else |
3248 | 0 | *local_got = (bfd_vma) -1; |
3249 | 0 | } |
3250 | 0 | } |
3251 | | |
3252 | | /* Allocate global sym .plt and .got entries, and space for global |
3253 | | sym dynamic relocs. */ |
3254 | 0 | elf_link_hash_traverse (&htab->elf, elf32_tic6x_allocate_dynrelocs, info); |
3255 | | |
3256 | | /* We now have determined the sizes of the various dynamic sections. |
3257 | | Allocate memory for them. */ |
3258 | 0 | relocs = false; |
3259 | 0 | for (s = dynobj->sections; s != NULL; s = s->next) |
3260 | 0 | { |
3261 | 0 | bool strip_section = true; |
3262 | |
|
3263 | 0 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
3264 | 0 | continue; |
3265 | | |
3266 | 0 | if (s == htab->dsbt) |
3267 | 0 | s->size = 4 * htab->params.dsbt_size; |
3268 | 0 | else if (s == htab->elf.splt |
3269 | 0 | || s == htab->elf.sgot |
3270 | 0 | || s == htab->elf.sgotplt |
3271 | 0 | || s == htab->elf.sdynbss |
3272 | 0 | || s == htab->elf.sdynrelro) |
3273 | 0 | { |
3274 | | /* Strip this section if we don't need it; see the |
3275 | | comment below. */ |
3276 | | /* We'd like to strip these sections if they aren't needed, but if |
3277 | | we've exported dynamic symbols from them we must leave them. |
3278 | | It's too late to tell BFD to get rid of the symbols. */ |
3279 | |
|
3280 | 0 | if (htab->elf.hplt != NULL) |
3281 | 0 | strip_section = false; |
3282 | | |
3283 | | /* Round up the size of the PLT section to a multiple of 32. */ |
3284 | 0 | if (s == htab->elf.splt && s->size > 0) |
3285 | 0 | s->size = (s->size + 31) & ~(bfd_vma)31; |
3286 | 0 | } |
3287 | 0 | else if (startswith (bfd_section_name (s), ".rela")) |
3288 | 0 | { |
3289 | 0 | if (s->size != 0 |
3290 | 0 | && s != htab->elf.srelplt) |
3291 | 0 | relocs = true; |
3292 | | |
3293 | | /* We use the reloc_count field as a counter if we need |
3294 | | to copy relocs into the output file. */ |
3295 | 0 | s->reloc_count = 0; |
3296 | 0 | } |
3297 | 0 | else |
3298 | 0 | { |
3299 | | /* It's not one of our sections, so don't allocate space. */ |
3300 | 0 | continue; |
3301 | 0 | } |
3302 | | |
3303 | 0 | if (s->size == 0) |
3304 | 0 | { |
3305 | | /* If we don't need this section, strip it from the |
3306 | | output file. This is mostly to handle .rel.bss and |
3307 | | .rel.plt. We must create both sections in |
3308 | | create_dynamic_sections, because they must be created |
3309 | | before the linker maps input sections to output |
3310 | | sections. The linker does that before |
3311 | | adjust_dynamic_symbol is called, and it is that |
3312 | | function which decides whether anything needs to go |
3313 | | into these sections. */ |
3314 | 0 | if (strip_section) |
3315 | 0 | s->flags |= SEC_EXCLUDE; |
3316 | 0 | continue; |
3317 | 0 | } |
3318 | | |
3319 | 0 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3320 | 0 | continue; |
3321 | | |
3322 | | /* Allocate memory for the section contents. We use bfd_zalloc |
3323 | | here in case unused entries are not reclaimed before the |
3324 | | section's contents are written out. This should not happen, |
3325 | | but this way if it does, we get a R_C6000_NONE reloc instead |
3326 | | of garbage. */ |
3327 | 0 | s->contents = bfd_zalloc (dynobj, s->size); |
3328 | 0 | if (s->contents == NULL) |
3329 | 0 | return false; |
3330 | 0 | } |
3331 | | |
3332 | 0 | if (htab->elf.dynamic_sections_created) |
3333 | 0 | { |
3334 | | /* Add some entries to the .dynamic section. We fill in the |
3335 | | values later, in elf32_tic6x_finish_dynamic_sections, but we |
3336 | | must add the entries now so that we get the correct size for |
3337 | | the .dynamic section. The DT_DEBUG entry is filled in by the |
3338 | | dynamic linker and used by the debugger. */ |
3339 | 0 | #define add_dynamic_entry(TAG, VAL) \ |
3340 | 0 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
3341 | |
|
3342 | 0 | if (!_bfd_elf_add_dynamic_tags (output_bfd, info, relocs)) |
3343 | 0 | return false; |
3344 | | |
3345 | 0 | if (!add_dynamic_entry (DT_C6000_DSBT_BASE, 0) |
3346 | 0 | || !add_dynamic_entry (DT_C6000_DSBT_SIZE, htab->params.dsbt_size) |
3347 | 0 | || !add_dynamic_entry (DT_C6000_DSBT_INDEX, |
3348 | 0 | htab->params.dsbt_index)) |
3349 | 0 | return false; |
3350 | |
|
3351 | 0 | } |
3352 | 0 | #undef add_dynamic_entry |
3353 | | |
3354 | 0 | return true; |
3355 | 0 | } |
3356 | | |
3357 | | /* This function is called after all the input files have been read, |
3358 | | and the input sections have been assigned to output sections. */ |
3359 | | |
3360 | | static bool |
3361 | | elf32_tic6x_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) |
3362 | 0 | { |
3363 | 0 | if (elf32_tic6x_using_dsbt (output_bfd) && !bfd_link_relocatable (info) |
3364 | 0 | && !bfd_elf_stack_segment_size (output_bfd, info, |
3365 | 0 | "__stacksize", DEFAULT_STACK_SIZE)) |
3366 | 0 | return false; |
3367 | | |
3368 | 0 | return true; |
3369 | 0 | } |
3370 | | |
3371 | | static bool |
3372 | | elf32_tic6x_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
3373 | | struct bfd_link_info *info) |
3374 | 0 | { |
3375 | 0 | struct elf32_tic6x_link_hash_table *htab; |
3376 | 0 | bfd *dynobj; |
3377 | 0 | asection *sdyn; |
3378 | |
|
3379 | 0 | htab = elf32_tic6x_hash_table (info); |
3380 | 0 | dynobj = htab->elf.dynobj; |
3381 | 0 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
3382 | |
|
3383 | 0 | if (elf_hash_table (info)->dynamic_sections_created) |
3384 | 0 | { |
3385 | 0 | Elf32_External_Dyn * dyncon; |
3386 | 0 | Elf32_External_Dyn * dynconend; |
3387 | |
|
3388 | 0 | BFD_ASSERT (sdyn != NULL); |
3389 | |
|
3390 | 0 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
3391 | 0 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
3392 | |
|
3393 | 0 | for (; dyncon < dynconend; dyncon++) |
3394 | 0 | { |
3395 | 0 | Elf_Internal_Dyn dyn; |
3396 | 0 | asection *s; |
3397 | |
|
3398 | 0 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
3399 | |
|
3400 | 0 | switch (dyn.d_tag) |
3401 | 0 | { |
3402 | 0 | default: |
3403 | 0 | break; |
3404 | | |
3405 | 0 | case DT_C6000_DSBT_BASE: |
3406 | 0 | s = htab->dsbt; |
3407 | 0 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset); |
3408 | 0 | break; |
3409 | | |
3410 | 0 | case DT_PLTGOT: |
3411 | 0 | s = htab->elf.sgotplt; |
3412 | 0 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
3413 | 0 | break; |
3414 | | |
3415 | 0 | case DT_JMPREL: |
3416 | 0 | s = htab->elf.srelplt; |
3417 | 0 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
3418 | 0 | break; |
3419 | | |
3420 | 0 | case DT_PLTRELSZ: |
3421 | 0 | s = htab->elf.srelplt; |
3422 | 0 | dyn.d_un.d_val = s->size; |
3423 | 0 | break; |
3424 | 0 | } |
3425 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
3426 | 0 | } |
3427 | | |
3428 | | /* Fill in the first entry in the procedure linkage table. */ |
3429 | 0 | if (htab->elf.splt && htab->elf.splt->size > 0) |
3430 | 0 | { |
3431 | 0 | bfd_vma got_offs = (htab->elf.sgotplt->output_section->vma |
3432 | 0 | + htab->elf.sgotplt->output_offset |
3433 | 0 | - htab->dsbt->output_section->vma |
3434 | 0 | - htab->dsbt->output_offset) / 4; |
3435 | | |
3436 | | /* ldw .D2T2 *+b14[$GOT(0)],b2 */ |
3437 | 0 | bfd_put_32 (output_bfd, got_offs << 8 | 0x0100006e, |
3438 | 0 | htab->elf.splt->contents); |
3439 | | /* ldw .D2T2 *+b14[$GOT(4)],b1 */ |
3440 | 0 | bfd_put_32 (output_bfd, (got_offs + 1) << 8 | 0x0080006e, |
3441 | 0 | htab->elf.splt->contents + 4); |
3442 | | /* nop 3 */ |
3443 | 0 | bfd_put_32 (output_bfd, 0x00004000, |
3444 | 0 | htab->elf.splt->contents + 8); |
3445 | | /* b .s2 b2 */ |
3446 | 0 | bfd_put_32 (output_bfd, 0x00080362, |
3447 | 0 | htab->elf.splt->contents + 12); |
3448 | | /* nop 5 */ |
3449 | 0 | bfd_put_32 (output_bfd, 0x00008000, |
3450 | 0 | htab->elf.splt->contents + 16); |
3451 | |
|
3452 | 0 | elf_section_data (htab->elf.splt->output_section) |
3453 | 0 | ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; |
3454 | 0 | } |
3455 | 0 | } |
3456 | | |
3457 | 0 | return true; |
3458 | 0 | } |
3459 | | |
3460 | | /* Return address for Ith PLT stub in section PLT, for relocation REL |
3461 | | or (bfd_vma) -1 if it should not be included. */ |
3462 | | |
3463 | | static bfd_vma |
3464 | | elf32_tic6x_plt_sym_val (bfd_vma i, const asection *plt, |
3465 | | const arelent *rel ATTRIBUTE_UNUSED) |
3466 | 0 | { |
3467 | 0 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; |
3468 | 0 | } |
3469 | | |
3470 | | static int |
3471 | | elf32_tic6x_obj_attrs_arg_type (int tag) |
3472 | 0 | { |
3473 | 0 | if (tag == Tag_ABI_compatibility) |
3474 | 0 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; |
3475 | 0 | else if (tag & 1) |
3476 | 0 | return ATTR_TYPE_FLAG_STR_VAL; |
3477 | 0 | else |
3478 | 0 | return ATTR_TYPE_FLAG_INT_VAL; |
3479 | 0 | } |
3480 | | |
3481 | | static int |
3482 | | elf32_tic6x_obj_attrs_order (int num) |
3483 | 0 | { |
3484 | 0 | if (num == LEAST_KNOWN_OBJ_ATTRIBUTE) |
3485 | 0 | return Tag_ABI_conformance; |
3486 | 0 | if ((num - 1) < Tag_ABI_conformance) |
3487 | 0 | return num - 1; |
3488 | 0 | return num; |
3489 | 0 | } |
3490 | | |
3491 | | static bool |
3492 | | elf32_tic6x_obj_attrs_handle_unknown (bfd *abfd, int tag) |
3493 | 0 | { |
3494 | 0 | if ((tag & 127) < 64) |
3495 | 0 | { |
3496 | 0 | _bfd_error_handler |
3497 | | /* xgettext:c-format */ |
3498 | 0 | (_("%pB: error: unknown mandatory EABI object attribute %d"), |
3499 | 0 | abfd, tag); |
3500 | 0 | bfd_set_error (bfd_error_bad_value); |
3501 | 0 | return false; |
3502 | 0 | } |
3503 | 0 | else |
3504 | 0 | { |
3505 | 0 | _bfd_error_handler |
3506 | | /* xgettext:c-format */ |
3507 | 0 | (_("%pB: warning: unknown EABI object attribute %d"), |
3508 | 0 | abfd, tag); |
3509 | 0 | return true; |
3510 | 0 | } |
3511 | 0 | } |
3512 | | |
3513 | | /* Merge the Tag_ISA attribute values ARCH1 and ARCH2 |
3514 | | and return the merged value. At present, all merges succeed, so no |
3515 | | return value for errors is defined. */ |
3516 | | |
3517 | | int |
3518 | | elf32_tic6x_merge_arch_attributes (int arch1, int arch2) |
3519 | 0 | { |
3520 | 0 | int min_arch, max_arch; |
3521 | |
|
3522 | 0 | min_arch = (arch1 < arch2 ? arch1 : arch2); |
3523 | 0 | max_arch = (arch1 > arch2 ? arch1 : arch2); |
3524 | | |
3525 | | /* In most cases, the numerically greatest value is the correct |
3526 | | merged value, but merging C64 and C67 results in C674X. */ |
3527 | 0 | if ((min_arch == C6XABI_Tag_ISA_C67X |
3528 | 0 | || min_arch == C6XABI_Tag_ISA_C67XP) |
3529 | 0 | && (max_arch == C6XABI_Tag_ISA_C64X |
3530 | 0 | || max_arch == C6XABI_Tag_ISA_C64XP)) |
3531 | 0 | return C6XABI_Tag_ISA_C674X; |
3532 | | |
3533 | 0 | return max_arch; |
3534 | 0 | } |
3535 | | |
3536 | | /* Convert a Tag_ABI_array_object_alignment or |
3537 | | Tag_ABI_array_object_align_expected tag value TAG to a |
3538 | | corresponding alignment value; return the alignment, or -1 for an |
3539 | | unknown tag value. */ |
3540 | | |
3541 | | static int |
3542 | | elf32_tic6x_tag_to_array_alignment (int tag) |
3543 | 0 | { |
3544 | 0 | switch (tag) |
3545 | 0 | { |
3546 | 0 | case 0: |
3547 | 0 | return 8; |
3548 | | |
3549 | 0 | case 1: |
3550 | 0 | return 4; |
3551 | | |
3552 | 0 | case 2: |
3553 | 0 | return 16; |
3554 | | |
3555 | 0 | default: |
3556 | 0 | return -1; |
3557 | 0 | } |
3558 | 0 | } |
3559 | | |
3560 | | /* Convert a Tag_ABI_array_object_alignment or |
3561 | | Tag_ABI_array_object_align_expected alignment ALIGN to a |
3562 | | corresponding tag value; return the tag value. */ |
3563 | | |
3564 | | static int |
3565 | | elf32_tic6x_array_alignment_to_tag (int align) |
3566 | 0 | { |
3567 | 0 | switch (align) |
3568 | 0 | { |
3569 | 0 | case 8: |
3570 | 0 | return 0; |
3571 | | |
3572 | 0 | case 4: |
3573 | 0 | return 1; |
3574 | | |
3575 | 0 | case 16: |
3576 | 0 | return 2; |
3577 | | |
3578 | 0 | default: |
3579 | 0 | abort (); |
3580 | 0 | } |
3581 | 0 | } |
3582 | | |
3583 | | /* Merge attributes from IBFD and OBFD, returning TRUE if the merge |
3584 | | succeeded, FALSE otherwise. */ |
3585 | | |
3586 | | static bool |
3587 | | elf32_tic6x_merge_attributes (bfd *ibfd, struct bfd_link_info *info) |
3588 | 0 | { |
3589 | 0 | bfd *obfd = info->output_bfd; |
3590 | 0 | bool result = true; |
3591 | 0 | obj_attribute *in_attr; |
3592 | 0 | obj_attribute *out_attr; |
3593 | 0 | int i; |
3594 | 0 | int array_align_in, array_align_out, array_expect_in, array_expect_out; |
3595 | | |
3596 | | /* FIXME: What should be checked when linking shared libraries? */ |
3597 | 0 | if ((ibfd->flags & DYNAMIC) != 0) |
3598 | 0 | return true; |
3599 | | |
3600 | 0 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
3601 | 0 | { |
3602 | | /* This is the first object. Copy the attributes. */ |
3603 | 0 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
3604 | |
|
3605 | 0 | out_attr = elf_known_obj_attributes_proc (obfd); |
3606 | | |
3607 | | /* Use the Tag_null value to indicate the attributes have been |
3608 | | initialized. */ |
3609 | 0 | out_attr[0].i = 1; |
3610 | |
|
3611 | 0 | return true; |
3612 | 0 | } |
3613 | | |
3614 | 0 | in_attr = elf_known_obj_attributes_proc (ibfd); |
3615 | 0 | out_attr = elf_known_obj_attributes_proc (obfd); |
3616 | | |
3617 | | /* No specification yet for handling of unknown attributes, so just |
3618 | | ignore them and handle known ones. */ |
3619 | |
|
3620 | 0 | if (out_attr[Tag_ABI_stack_align_preserved].i |
3621 | 0 | < in_attr[Tag_ABI_stack_align_needed].i) |
3622 | 0 | { |
3623 | 0 | _bfd_error_handler |
3624 | | /* xgettext:c-format */ |
3625 | 0 | (_("error: %pB requires more stack alignment than %pB preserves"), |
3626 | 0 | ibfd, obfd); |
3627 | 0 | result = false; |
3628 | 0 | } |
3629 | 0 | if (in_attr[Tag_ABI_stack_align_preserved].i |
3630 | 0 | < out_attr[Tag_ABI_stack_align_needed].i) |
3631 | 0 | { |
3632 | 0 | _bfd_error_handler |
3633 | | /* xgettext:c-format */ |
3634 | 0 | (_("error: %pB requires more stack alignment than %pB preserves"), |
3635 | 0 | obfd, ibfd); |
3636 | 0 | result = false; |
3637 | 0 | } |
3638 | |
|
3639 | 0 | array_align_in = elf32_tic6x_tag_to_array_alignment |
3640 | 0 | (in_attr[Tag_ABI_array_object_alignment].i); |
3641 | 0 | if (array_align_in == -1) |
3642 | 0 | { |
3643 | 0 | _bfd_error_handler |
3644 | 0 | (_("error: unknown Tag_ABI_array_object_alignment value in %pB"), |
3645 | 0 | ibfd); |
3646 | 0 | result = false; |
3647 | 0 | } |
3648 | 0 | array_align_out = elf32_tic6x_tag_to_array_alignment |
3649 | 0 | (out_attr[Tag_ABI_array_object_alignment].i); |
3650 | 0 | if (array_align_out == -1) |
3651 | 0 | { |
3652 | 0 | _bfd_error_handler |
3653 | 0 | (_("error: unknown Tag_ABI_array_object_alignment value in %pB"), |
3654 | 0 | obfd); |
3655 | 0 | result = false; |
3656 | 0 | } |
3657 | 0 | array_expect_in = elf32_tic6x_tag_to_array_alignment |
3658 | 0 | (in_attr[Tag_ABI_array_object_align_expected].i); |
3659 | 0 | if (array_expect_in == -1) |
3660 | 0 | { |
3661 | 0 | _bfd_error_handler |
3662 | 0 | (_("error: unknown Tag_ABI_array_object_align_expected value in %pB"), |
3663 | 0 | ibfd); |
3664 | 0 | result = false; |
3665 | 0 | } |
3666 | 0 | array_expect_out = elf32_tic6x_tag_to_array_alignment |
3667 | 0 | (out_attr[Tag_ABI_array_object_align_expected].i); |
3668 | 0 | if (array_expect_out == -1) |
3669 | 0 | { |
3670 | 0 | _bfd_error_handler |
3671 | 0 | (_("error: unknown Tag_ABI_array_object_align_expected value in %pB"), |
3672 | 0 | obfd); |
3673 | 0 | result = false; |
3674 | 0 | } |
3675 | |
|
3676 | 0 | if (array_align_out < array_expect_in) |
3677 | 0 | { |
3678 | 0 | _bfd_error_handler |
3679 | | /* xgettext:c-format */ |
3680 | 0 | (_("error: %pB requires more array alignment than %pB preserves"), |
3681 | 0 | ibfd, obfd); |
3682 | 0 | result = false; |
3683 | 0 | } |
3684 | 0 | if (array_align_in < array_expect_out) |
3685 | 0 | { |
3686 | 0 | _bfd_error_handler |
3687 | | /* xgettext:c-format */ |
3688 | 0 | (_("error: %pB requires more array alignment than %pB preserves"), |
3689 | 0 | obfd, ibfd); |
3690 | 0 | result = false; |
3691 | 0 | } |
3692 | |
|
3693 | 0 | for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
3694 | 0 | { |
3695 | 0 | switch (i) |
3696 | 0 | { |
3697 | 0 | case Tag_ISA: |
3698 | 0 | out_attr[i].i = elf32_tic6x_merge_arch_attributes (in_attr[i].i, |
3699 | 0 | out_attr[i].i); |
3700 | 0 | break; |
3701 | | |
3702 | 0 | case Tag_ABI_wchar_t: |
3703 | 0 | if (out_attr[i].i == 0) |
3704 | 0 | out_attr[i].i = in_attr[i].i; |
3705 | 0 | if (out_attr[i].i != 0 |
3706 | 0 | && in_attr[i].i != 0 |
3707 | 0 | && out_attr[i].i != in_attr[i].i) |
3708 | 0 | { |
3709 | 0 | _bfd_error_handler |
3710 | | /* xgettext:c-format */ |
3711 | 0 | (_("warning: %pB and %pB differ in wchar_t size"), obfd, ibfd); |
3712 | 0 | } |
3713 | 0 | break; |
3714 | | |
3715 | 0 | case Tag_ABI_stack_align_needed: |
3716 | 0 | if (out_attr[i].i < in_attr[i].i) |
3717 | 0 | out_attr[i].i = in_attr[i].i; |
3718 | 0 | break; |
3719 | | |
3720 | 0 | case Tag_ABI_stack_align_preserved: |
3721 | 0 | if (out_attr[i].i > in_attr[i].i) |
3722 | 0 | out_attr[i].i = in_attr[i].i; |
3723 | 0 | break; |
3724 | | |
3725 | 0 | case Tag_ABI_DSBT: |
3726 | 0 | if (out_attr[i].i != in_attr[i].i) |
3727 | 0 | { |
3728 | 0 | _bfd_error_handler |
3729 | | /* xgettext:c-format */ |
3730 | 0 | (_("warning: %pB and %pB differ in whether code is " |
3731 | 0 | "compiled for DSBT"), |
3732 | 0 | obfd, ibfd); |
3733 | 0 | } |
3734 | 0 | break; |
3735 | | |
3736 | 0 | case Tag_ABI_PIC: |
3737 | 0 | case Tag_ABI_PID: |
3738 | | /* Don't transfer these tags from dynamic objects. */ |
3739 | 0 | if ((ibfd->flags & DYNAMIC) != 0) |
3740 | 0 | continue; |
3741 | 0 | if (out_attr[i].i > in_attr[i].i) |
3742 | 0 | out_attr[i].i = in_attr[i].i; |
3743 | 0 | break; |
3744 | | |
3745 | 0 | case Tag_ABI_array_object_alignment: |
3746 | 0 | if (array_align_out != -1 |
3747 | 0 | && array_align_in != -1 |
3748 | 0 | && array_align_out > array_align_in) |
3749 | 0 | out_attr[i].i |
3750 | 0 | = elf32_tic6x_array_alignment_to_tag (array_align_in); |
3751 | 0 | break; |
3752 | | |
3753 | 0 | case Tag_ABI_array_object_align_expected: |
3754 | 0 | if (array_expect_out != -1 |
3755 | 0 | && array_expect_in != -1 |
3756 | 0 | && array_expect_out < array_expect_in) |
3757 | 0 | out_attr[i].i |
3758 | 0 | = elf32_tic6x_array_alignment_to_tag (array_expect_in); |
3759 | 0 | break; |
3760 | | |
3761 | 0 | case Tag_ABI_conformance: |
3762 | | /* Merging for this attribute is not specified. As on ARM, |
3763 | | treat a missing attribute as no claim to conform and only |
3764 | | merge identical values. */ |
3765 | 0 | if (out_attr[i].s == NULL |
3766 | 0 | || in_attr[i].s == NULL |
3767 | 0 | || strcmp (out_attr[i].s, |
3768 | 0 | in_attr[i].s) != 0) |
3769 | 0 | out_attr[i].s = NULL; |
3770 | 0 | break; |
3771 | | |
3772 | 0 | case Tag_ABI_compatibility: |
3773 | | /* Merged in _bfd_elf_merge_object_attributes. */ |
3774 | 0 | break; |
3775 | | |
3776 | 0 | default: |
3777 | 0 | result |
3778 | 0 | = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i); |
3779 | 0 | break; |
3780 | 0 | } |
3781 | | |
3782 | 0 | if (in_attr[i].type && !out_attr[i].type) |
3783 | 0 | out_attr[i].type = in_attr[i].type; |
3784 | 0 | } |
3785 | | |
3786 | | /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */ |
3787 | 0 | if (!_bfd_elf_merge_object_attributes (ibfd, info)) |
3788 | 0 | return false; |
3789 | | |
3790 | 0 | result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd); |
3791 | |
|
3792 | 0 | return result; |
3793 | 0 | } |
3794 | | |
3795 | | static bool |
3796 | | elf32_tic6x_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
3797 | 0 | { |
3798 | 0 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
3799 | 0 | return false; |
3800 | | |
3801 | 0 | if (! is_tic6x_elf (ibfd) || ! is_tic6x_elf (info->output_bfd)) |
3802 | 0 | return true; |
3803 | | |
3804 | 0 | if (!elf32_tic6x_merge_attributes (ibfd, info)) |
3805 | 0 | return false; |
3806 | | |
3807 | 0 | return true; |
3808 | 0 | } |
3809 | | |
3810 | | /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero, |
3811 | | adds the edit to the start of the list. (The list must be built in order of |
3812 | | ascending TINDEX: the function's callers are primarily responsible for |
3813 | | maintaining that condition). */ |
3814 | | |
3815 | | static void |
3816 | | elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit **head, |
3817 | | tic6x_unwind_table_edit **tail, |
3818 | | tic6x_unwind_edit_type type, |
3819 | | asection *linked_section, |
3820 | | unsigned int tindex) |
3821 | 0 | { |
3822 | 0 | tic6x_unwind_table_edit *new_edit = (tic6x_unwind_table_edit *) |
3823 | 0 | xmalloc (sizeof (tic6x_unwind_table_edit)); |
3824 | |
|
3825 | 0 | new_edit->type = type; |
3826 | 0 | new_edit->linked_section = linked_section; |
3827 | 0 | new_edit->index = tindex; |
3828 | |
|
3829 | 0 | if (tindex > 0) |
3830 | 0 | { |
3831 | 0 | new_edit->next = NULL; |
3832 | |
|
3833 | 0 | if (*tail) |
3834 | 0 | (*tail)->next = new_edit; |
3835 | |
|
3836 | 0 | (*tail) = new_edit; |
3837 | |
|
3838 | 0 | if (!*head) |
3839 | 0 | (*head) = new_edit; |
3840 | 0 | } |
3841 | 0 | else |
3842 | 0 | { |
3843 | 0 | new_edit->next = *head; |
3844 | |
|
3845 | 0 | if (!*tail) |
3846 | 0 | *tail = new_edit; |
3847 | |
|
3848 | 0 | *head = new_edit; |
3849 | 0 | } |
3850 | 0 | } |
3851 | | |
3852 | | static _tic6x_elf_section_data * |
3853 | | get_tic6x_elf_section_data (asection * sec) |
3854 | 0 | { |
3855 | 0 | if (sec && sec->owner && is_tic6x_elf (sec->owner)) |
3856 | 0 | return elf32_tic6x_section_data (sec); |
3857 | 0 | else |
3858 | 0 | return NULL; |
3859 | 0 | } |
3860 | | |
3861 | | |
3862 | | /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */ |
3863 | | static void |
3864 | | elf32_tic6x_adjust_exidx_size (asection *exidx_sec, int adjust) |
3865 | 0 | { |
3866 | 0 | asection *out_sec; |
3867 | |
|
3868 | 0 | if (!exidx_sec->rawsize) |
3869 | 0 | exidx_sec->rawsize = exidx_sec->size; |
3870 | |
|
3871 | 0 | bfd_set_section_size (exidx_sec, exidx_sec->size + adjust); |
3872 | 0 | out_sec = exidx_sec->output_section; |
3873 | | /* Adjust size of output section. */ |
3874 | 0 | bfd_set_section_size (out_sec, out_sec->size +adjust); |
3875 | 0 | } |
3876 | | |
3877 | | /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */ |
3878 | | static void |
3879 | | elf32_tic6x_insert_cantunwind_after (asection *text_sec, asection *exidx_sec) |
3880 | 0 | { |
3881 | 0 | struct _tic6x_elf_section_data *exidx_data; |
3882 | |
|
3883 | 0 | exidx_data = get_tic6x_elf_section_data (exidx_sec); |
3884 | 0 | elf32_tic6x_add_unwind_table_edit ( |
3885 | 0 | &exidx_data->u.exidx.unwind_edit_list, |
3886 | 0 | &exidx_data->u.exidx.unwind_edit_tail, |
3887 | 0 | INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX); |
3888 | |
|
3889 | 0 | elf32_tic6x_adjust_exidx_size (exidx_sec, 8); |
3890 | 0 | } |
3891 | | |
3892 | | /* Scan .cx6abi.exidx tables, and create a list describing edits which |
3893 | | should be made to those tables, such that: |
3894 | | |
3895 | | 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries. |
3896 | | 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind |
3897 | | codes which have been inlined into the index). |
3898 | | |
3899 | | If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged. |
3900 | | |
3901 | | The edits are applied when the tables are written |
3902 | | (in elf32_tic6x_write_section). |
3903 | | */ |
3904 | | |
3905 | | bool |
3906 | | elf32_tic6x_fix_exidx_coverage (asection **text_section_order, |
3907 | | unsigned int num_text_sections, |
3908 | | struct bfd_link_info *info, |
3909 | | bool merge_exidx_entries) |
3910 | 0 | { |
3911 | 0 | bfd *inp; |
3912 | 0 | unsigned int last_second_word = 0, i; |
3913 | 0 | asection *last_exidx_sec = NULL; |
3914 | 0 | asection *last_text_sec = NULL; |
3915 | 0 | int last_unwind_type = -1; |
3916 | | |
3917 | | /* Walk over all EXIDX sections, and create backlinks from the corrsponding |
3918 | | text sections. */ |
3919 | 0 | for (inp = info->input_bfds; inp != NULL; inp = inp->link.next) |
3920 | 0 | { |
3921 | 0 | asection *sec; |
3922 | |
|
3923 | 0 | for (sec = inp->sections; sec != NULL; sec = sec->next) |
3924 | 0 | { |
3925 | 0 | struct bfd_elf_section_data *elf_sec = elf_section_data (sec); |
3926 | 0 | Elf_Internal_Shdr *hdr = &elf_sec->this_hdr; |
3927 | |
|
3928 | 0 | if (!hdr || hdr->sh_type != SHT_C6000_UNWIND) |
3929 | 0 | continue; |
3930 | | |
3931 | 0 | if (elf_sec->linked_to) |
3932 | 0 | { |
3933 | 0 | Elf_Internal_Shdr *linked_hdr |
3934 | 0 | = &elf_section_data (elf_sec->linked_to)->this_hdr; |
3935 | 0 | struct _tic6x_elf_section_data *linked_sec_tic6x_data |
3936 | 0 | = get_tic6x_elf_section_data (linked_hdr->bfd_section); |
3937 | |
|
3938 | 0 | if (linked_sec_tic6x_data == NULL) |
3939 | 0 | continue; |
3940 | | |
3941 | | /* Link this .c6xabi.exidx section back from the |
3942 | | text section it describes. */ |
3943 | 0 | linked_sec_tic6x_data->u.text.tic6x_exidx_sec = sec; |
3944 | 0 | } |
3945 | 0 | } |
3946 | 0 | } |
3947 | | |
3948 | | /* Walk all text sections in order of increasing VMA. Eilminate duplicate |
3949 | | index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes), |
3950 | | and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */ |
3951 | |
|
3952 | 0 | for (i = 0; i < num_text_sections; i++) |
3953 | 0 | { |
3954 | 0 | asection *sec = text_section_order[i]; |
3955 | 0 | asection *exidx_sec; |
3956 | 0 | struct _tic6x_elf_section_data *tic6x_data |
3957 | 0 | = get_tic6x_elf_section_data (sec); |
3958 | 0 | struct _tic6x_elf_section_data *exidx_data; |
3959 | 0 | bfd_byte *contents = NULL; |
3960 | 0 | int deleted_exidx_bytes = 0; |
3961 | 0 | bfd_vma j; |
3962 | 0 | tic6x_unwind_table_edit *unwind_edit_head = NULL; |
3963 | 0 | tic6x_unwind_table_edit *unwind_edit_tail = NULL; |
3964 | 0 | Elf_Internal_Shdr *hdr; |
3965 | 0 | bfd *ibfd; |
3966 | |
|
3967 | 0 | if (tic6x_data == NULL) |
3968 | 0 | continue; |
3969 | | |
3970 | 0 | exidx_sec = tic6x_data->u.text.tic6x_exidx_sec; |
3971 | 0 | if (exidx_sec == NULL) |
3972 | 0 | { |
3973 | | /* Section has no unwind data. */ |
3974 | 0 | if (last_unwind_type == 0 || !last_exidx_sec) |
3975 | 0 | continue; |
3976 | | |
3977 | | /* Ignore zero sized sections. */ |
3978 | 0 | if (sec->size == 0) |
3979 | 0 | continue; |
3980 | | |
3981 | 0 | elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec); |
3982 | 0 | last_unwind_type = 0; |
3983 | 0 | continue; |
3984 | 0 | } |
3985 | | |
3986 | | /* Skip /DISCARD/ sections. */ |
3987 | 0 | if (bfd_is_abs_section (exidx_sec->output_section)) |
3988 | 0 | continue; |
3989 | | |
3990 | 0 | hdr = &elf_section_data (exidx_sec)->this_hdr; |
3991 | 0 | if (hdr->sh_type != SHT_C6000_UNWIND) |
3992 | 0 | continue; |
3993 | | |
3994 | 0 | exidx_data = get_tic6x_elf_section_data (exidx_sec); |
3995 | 0 | if (exidx_data == NULL) |
3996 | 0 | continue; |
3997 | | |
3998 | 0 | ibfd = exidx_sec->owner; |
3999 | |
|
4000 | 0 | if (hdr->contents != NULL) |
4001 | 0 | contents = hdr->contents; |
4002 | 0 | else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents)) |
4003 | | /* An error? */ |
4004 | 0 | continue; |
4005 | | |
4006 | 0 | for (j = 0; j < hdr->sh_size; j += 8) |
4007 | 0 | { |
4008 | 0 | unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4); |
4009 | 0 | int unwind_type; |
4010 | 0 | int elide = 0; |
4011 | | |
4012 | | /* An EXIDX_CANTUNWIND entry. */ |
4013 | 0 | if (second_word == 1) |
4014 | 0 | { |
4015 | 0 | if (last_unwind_type == 0) |
4016 | 0 | elide = 1; |
4017 | 0 | unwind_type = 0; |
4018 | 0 | } |
4019 | | /* Inlined unwinding data. Merge if equal to previous. */ |
4020 | 0 | else if ((second_word & 0x80000000) != 0) |
4021 | 0 | { |
4022 | 0 | if (merge_exidx_entries |
4023 | 0 | && last_second_word == second_word |
4024 | 0 | && last_unwind_type == 1) |
4025 | 0 | elide = 1; |
4026 | 0 | unwind_type = 1; |
4027 | 0 | last_second_word = second_word; |
4028 | 0 | } |
4029 | | /* Normal table entry. In theory we could merge these too, |
4030 | | but duplicate entries are likely to be much less common. */ |
4031 | 0 | else |
4032 | 0 | unwind_type = 2; |
4033 | |
|
4034 | 0 | if (elide) |
4035 | 0 | { |
4036 | 0 | elf32_tic6x_add_unwind_table_edit (&unwind_edit_head, |
4037 | 0 | &unwind_edit_tail, DELETE_EXIDX_ENTRY, NULL, j / 8); |
4038 | |
|
4039 | 0 | deleted_exidx_bytes += 8; |
4040 | 0 | } |
4041 | |
|
4042 | 0 | last_unwind_type = unwind_type; |
4043 | 0 | } |
4044 | | |
4045 | | /* Free contents if we allocated it ourselves. */ |
4046 | 0 | if (contents != hdr->contents) |
4047 | 0 | free (contents); |
4048 | | |
4049 | | /* Record edits to be applied later (in elf32_tic6x_write_section). */ |
4050 | 0 | exidx_data->u.exidx.unwind_edit_list = unwind_edit_head; |
4051 | 0 | exidx_data->u.exidx.unwind_edit_tail = unwind_edit_tail; |
4052 | |
|
4053 | 0 | if (deleted_exidx_bytes > 0) |
4054 | 0 | elf32_tic6x_adjust_exidx_size (exidx_sec, -deleted_exidx_bytes); |
4055 | |
|
4056 | 0 | last_exidx_sec = exidx_sec; |
4057 | 0 | last_text_sec = sec; |
4058 | 0 | } |
4059 | | |
4060 | | /* Add terminating CANTUNWIND entry. */ |
4061 | 0 | if (last_exidx_sec && last_unwind_type != 0) |
4062 | 0 | elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec); |
4063 | |
|
4064 | 0 | return true; |
4065 | 0 | } |
4066 | | |
4067 | | /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */ |
4068 | | |
4069 | | static unsigned long |
4070 | | elf32_tic6x_add_low31 (unsigned long val, bfd_vma addend) |
4071 | 0 | { |
4072 | 0 | return (val & ~0x7ffffffful) | ((val + addend) & 0x7ffffffful); |
4073 | 0 | } |
4074 | | |
4075 | | /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31 |
4076 | | relocations. OFFSET is in bytes, and will be scaled before encoding. */ |
4077 | | |
4078 | | |
4079 | | static void |
4080 | | elf32_tic6x_copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from, |
4081 | | bfd_vma offset) |
4082 | 0 | { |
4083 | 0 | unsigned long first_word = bfd_get_32 (output_bfd, from); |
4084 | 0 | unsigned long second_word = bfd_get_32 (output_bfd, from + 4); |
4085 | |
|
4086 | 0 | offset >>= 1; |
4087 | | /* High bit of first word is supposed to be zero. */ |
4088 | 0 | if ((first_word & 0x80000000ul) == 0) |
4089 | 0 | first_word = elf32_tic6x_add_low31 (first_word, offset); |
4090 | | |
4091 | | /* If the high bit of the first word is clear, and the bit pattern is not 0x1 |
4092 | | (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */ |
4093 | 0 | if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0)) |
4094 | 0 | second_word = elf32_tic6x_add_low31 (second_word, offset); |
4095 | |
|
4096 | 0 | bfd_put_32 (output_bfd, first_word, to); |
4097 | 0 | bfd_put_32 (output_bfd, second_word, to + 4); |
4098 | 0 | } |
4099 | | |
4100 | | /* Do the actual mangling of exception index tables. */ |
4101 | | |
4102 | | static bool |
4103 | | elf32_tic6x_write_section (bfd *output_bfd, |
4104 | | struct bfd_link_info *link_info, |
4105 | | asection *sec, |
4106 | | bfd_byte *contents) |
4107 | 0 | { |
4108 | 0 | _tic6x_elf_section_data *tic6x_data; |
4109 | 0 | struct elf32_tic6x_link_hash_table *globals |
4110 | 0 | = elf32_tic6x_hash_table (link_info); |
4111 | 0 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
4112 | |
|
4113 | 0 | if (globals == NULL) |
4114 | 0 | return false; |
4115 | | |
4116 | | /* If this section has not been allocated an _tic6x_elf_section_data |
4117 | | structure then we cannot record anything. */ |
4118 | 0 | tic6x_data = get_tic6x_elf_section_data (sec); |
4119 | 0 | if (tic6x_data == NULL) |
4120 | 0 | return false; |
4121 | | |
4122 | 0 | if (tic6x_data->elf.this_hdr.sh_type != SHT_C6000_UNWIND) |
4123 | 0 | return false; |
4124 | | |
4125 | 0 | tic6x_unwind_table_edit *edit_node |
4126 | 0 | = tic6x_data->u.exidx.unwind_edit_list; |
4127 | | /* Now, sec->size is the size of the section we will write. The original |
4128 | | size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND |
4129 | | markers) was sec->rawsize. (This isn't the case if we perform no |
4130 | | edits, then rawsize will be zero and we should use size). */ |
4131 | 0 | bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size); |
4132 | 0 | unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size; |
4133 | 0 | unsigned int in_index, out_index; |
4134 | 0 | bfd_vma add_to_offsets = 0; |
4135 | |
|
4136 | 0 | for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;) |
4137 | 0 | { |
4138 | 0 | if (edit_node) |
4139 | 0 | { |
4140 | 0 | unsigned int edit_index = edit_node->index; |
4141 | |
|
4142 | 0 | if (in_index < edit_index && in_index * 8 < input_size) |
4143 | 0 | { |
4144 | 0 | elf32_tic6x_copy_exidx_entry (output_bfd, |
4145 | 0 | edited_contents + out_index * 8, |
4146 | 0 | contents + in_index * 8, add_to_offsets); |
4147 | 0 | out_index++; |
4148 | 0 | in_index++; |
4149 | 0 | } |
4150 | 0 | else if (in_index == edit_index |
4151 | 0 | || (in_index * 8 >= input_size |
4152 | 0 | && edit_index == UINT_MAX)) |
4153 | 0 | { |
4154 | 0 | switch (edit_node->type) |
4155 | 0 | { |
4156 | 0 | case DELETE_EXIDX_ENTRY: |
4157 | 0 | in_index++; |
4158 | 0 | add_to_offsets += 8; |
4159 | 0 | break; |
4160 | | |
4161 | 0 | case INSERT_EXIDX_CANTUNWIND_AT_END: |
4162 | 0 | { |
4163 | 0 | asection *text_sec = edit_node->linked_section; |
4164 | 0 | bfd_vma text_offset = text_sec->output_section->vma |
4165 | 0 | + text_sec->output_offset |
4166 | 0 | + text_sec->size; |
4167 | 0 | bfd_vma exidx_offset = offset + out_index * 8; |
4168 | 0 | unsigned long prel31_offset; |
4169 | | |
4170 | | /* Note: this is meant to be equivalent to an |
4171 | | R_C6000_PREL31 relocation. These synthetic |
4172 | | EXIDX_CANTUNWIND markers are not relocated by the |
4173 | | usual BFD method. */ |
4174 | 0 | prel31_offset = ((text_offset - exidx_offset) >> 1) |
4175 | 0 | & 0x7ffffffful; |
4176 | | |
4177 | | /* First address we can't unwind. */ |
4178 | 0 | bfd_put_32 (output_bfd, prel31_offset, |
4179 | 0 | &edited_contents[out_index * 8]); |
4180 | | |
4181 | | /* Code for EXIDX_CANTUNWIND. */ |
4182 | 0 | bfd_put_32 (output_bfd, 0x1, |
4183 | 0 | &edited_contents[out_index * 8 + 4]); |
4184 | |
|
4185 | 0 | out_index++; |
4186 | 0 | add_to_offsets -= 8; |
4187 | 0 | } |
4188 | 0 | break; |
4189 | 0 | } |
4190 | | |
4191 | 0 | edit_node = edit_node->next; |
4192 | 0 | } |
4193 | 0 | } |
4194 | 0 | else |
4195 | 0 | { |
4196 | | /* No more edits, copy remaining entries verbatim. */ |
4197 | 0 | elf32_tic6x_copy_exidx_entry (output_bfd, |
4198 | 0 | edited_contents + out_index * 8, |
4199 | 0 | contents + in_index * 8, add_to_offsets); |
4200 | 0 | out_index++; |
4201 | 0 | in_index++; |
4202 | 0 | } |
4203 | 0 | } |
4204 | | |
4205 | 0 | if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD)) |
4206 | 0 | bfd_set_section_contents (output_bfd, sec->output_section, |
4207 | 0 | edited_contents, |
4208 | 0 | (file_ptr) sec->output_offset, sec->size); |
4209 | |
|
4210 | 0 | return true; |
4211 | 0 | } |
4212 | | |
4213 | | #define elf32_bed elf32_tic6x_bed |
4214 | | |
4215 | | #define TARGET_LITTLE_SYM tic6x_elf32_le_vec |
4216 | | #define TARGET_LITTLE_NAME "elf32-tic6x-le" |
4217 | | #define TARGET_BIG_SYM tic6x_elf32_be_vec |
4218 | | #define TARGET_BIG_NAME "elf32-tic6x-be" |
4219 | | #define ELF_ARCH bfd_arch_tic6x |
4220 | | #define ELF_TARGET_ID TIC6X_ELF_DATA |
4221 | | #define ELF_MACHINE_CODE EM_TI_C6000 |
4222 | | #define ELF_MAXPAGESIZE 0x1000 |
4223 | | #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup |
4224 | | #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup |
4225 | | #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data |
4226 | | #define bfd_elf32_mkobject elf32_tic6x_mkobject |
4227 | | #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create |
4228 | | #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook |
4229 | | #define elf_backend_stack_align 8 |
4230 | | #define elf_backend_can_gc_sections 1 |
4231 | | #define elf_backend_default_use_rela_p 1 |
4232 | | #define elf_backend_may_use_rel_p 1 |
4233 | | #define elf_backend_may_use_rela_p 1 |
4234 | | #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type |
4235 | | #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown |
4236 | | #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order |
4237 | | #define elf_backend_obj_attrs_section ".c6xabi.attributes" |
4238 | | #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES |
4239 | | #define elf_backend_obj_attrs_vendor "c6xabi" |
4240 | | #define elf_backend_can_refcount 1 |
4241 | | #define elf_backend_want_got_plt 1 |
4242 | | #define elf_backend_want_dynbss 1 |
4243 | | #define elf_backend_want_dynrelro 1 |
4244 | | #define elf_backend_plt_readonly 1 |
4245 | | #define elf_backend_rela_normal 1 |
4246 | | #define elf_backend_got_header_size 8 |
4247 | | #define elf_backend_fake_sections elf32_tic6x_fake_sections |
4248 | | #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections |
4249 | | #define elf_backend_create_dynamic_sections \ |
4250 | | elf32_tic6x_create_dynamic_sections |
4251 | | #define elf_backend_adjust_dynamic_symbol \ |
4252 | | elf32_tic6x_adjust_dynamic_symbol |
4253 | | #define elf_backend_check_relocs elf32_tic6x_check_relocs |
4254 | | #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook |
4255 | | #define elf_backend_symbol_processing elf32_tic6x_symbol_processing |
4256 | | #define elf_backend_link_output_symbol_hook \ |
4257 | | elf32_tic6x_link_output_symbol_hook |
4258 | | #define elf_backend_section_from_bfd_section \ |
4259 | | elf32_tic6x_section_from_bfd_section |
4260 | | #define elf_backend_relocate_section elf32_tic6x_relocate_section |
4261 | | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
4262 | | #define elf_backend_finish_dynamic_symbol \ |
4263 | | elf32_tic6x_finish_dynamic_symbol |
4264 | | #define elf_backend_always_size_sections \ |
4265 | | elf32_tic6x_always_size_sections |
4266 | | #define elf_backend_size_dynamic_sections \ |
4267 | | elf32_tic6x_size_dynamic_sections |
4268 | | #define elf_backend_finish_dynamic_sections \ |
4269 | | elf32_tic6x_finish_dynamic_sections |
4270 | | #define bfd_elf32_bfd_final_link \ |
4271 | | elf32_tic6x_final_link |
4272 | | #define elf_backend_write_section elf32_tic6x_write_section |
4273 | | #define elf_info_to_howto elf32_tic6x_info_to_howto |
4274 | | #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel |
4275 | | |
4276 | | #undef elf_backend_omit_section_dynsym |
4277 | | #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym |
4278 | | #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val |
4279 | | |
4280 | | #include "elf32-target.h" |
4281 | | |
4282 | | #undef elf32_bed |
4283 | | #define elf32_bed elf32_tic6x_linux_bed |
4284 | | |
4285 | | #undef TARGET_LITTLE_SYM |
4286 | | #define TARGET_LITTLE_SYM tic6x_elf32_linux_le_vec |
4287 | | #undef TARGET_LITTLE_NAME |
4288 | | #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le" |
4289 | | #undef TARGET_BIG_SYM |
4290 | | #define TARGET_BIG_SYM tic6x_elf32_linux_be_vec |
4291 | | #undef TARGET_BIG_NAME |
4292 | | #define TARGET_BIG_NAME "elf32-tic6x-linux-be" |
4293 | | #undef ELF_OSABI |
4294 | | #define ELF_OSABI ELFOSABI_C6000_LINUX |
4295 | | |
4296 | | #include "elf32-target.h" |
4297 | | |
4298 | | #undef elf32_bed |
4299 | | #define elf32_bed elf32_tic6x_elf_bed |
4300 | | |
4301 | | #undef TARGET_LITTLE_SYM |
4302 | | #define TARGET_LITTLE_SYM tic6x_elf32_c6000_le_vec |
4303 | | #undef TARGET_LITTLE_NAME |
4304 | | #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le" |
4305 | | #undef TARGET_BIG_SYM |
4306 | | #define TARGET_BIG_SYM tic6x_elf32_c6000_be_vec |
4307 | | #undef TARGET_BIG_NAME |
4308 | | #define TARGET_BIG_NAME "elf32-tic6x-elf-be" |
4309 | | #undef ELF_OSABI |
4310 | | #define ELF_OSABI ELFOSABI_C6000_ELFABI |
4311 | | |
4312 | | #include "elf32-target.h" |