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* configure.in (bfd_elf32_frvfdpic_vec): New.
[thirdparty/binutils-gdb.git] / bfd / elf32-frv.c
1 /* FRV-specific support for 32-bit ELF.
2 Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20 #include "bfd.h"
21 #include "sysdep.h"
22 #include "libbfd.h"
23 #include "elf-bfd.h"
24 #include "elf/frv.h"
25 #include "elf/dwarf2.h"
26 #include "hashtab.h"
27
28 /* Forward declarations. */
29 static bfd_reloc_status_type elf32_frv_relocate_lo16
30 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
31 static bfd_reloc_status_type elf32_frv_relocate_hi16
32 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
33 static bfd_reloc_status_type elf32_frv_relocate_label24
34 PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
35 static bfd_reloc_status_type elf32_frv_relocate_gprel12
36 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *,
37 bfd_byte *, bfd_vma));
38 static bfd_reloc_status_type elf32_frv_relocate_gprelu12
39 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *,
40 bfd_byte *, bfd_vma));
41 static bfd_reloc_status_type elf32_frv_relocate_gprello
42 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *,
43 bfd_byte *, bfd_vma));
44 static bfd_reloc_status_type elf32_frv_relocate_gprelhi
45 PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *,
46 bfd_byte *, bfd_vma));
47 static reloc_howto_type *frv_reloc_type_lookup
48 PARAMS ((bfd *, bfd_reloc_code_real_type));
49 static void frv_info_to_howto_rela
50 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
51 static bfd_boolean elf32_frv_relocate_section
52 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
53 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
54 static bfd_boolean elf32_frv_add_symbol_hook
55 PARAMS (( bfd *, struct bfd_link_info *, Elf_Internal_Sym *,
56 const char **, flagword *, asection **, bfd_vma *));
57 static bfd_reloc_status_type frv_final_link_relocate
58 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
59 Elf_Internal_Rela *, bfd_vma));
60 static bfd_boolean elf32_frv_gc_sweep_hook
61 PARAMS ((bfd *, struct bfd_link_info *, asection *, const
62 Elf_Internal_Rela *));
63 static asection * elf32_frv_gc_mark_hook
64 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
65 struct elf_link_hash_entry *, Elf_Internal_Sym *));
66 static bfd_boolean elf32_frv_check_relocs
67 PARAMS ((bfd *, struct bfd_link_info *, asection *,
68 const Elf_Internal_Rela *));
69 static int elf32_frv_machine
70 PARAMS ((bfd *));
71 static bfd_boolean elf32_frv_object_p
72 PARAMS ((bfd *));
73 static bfd_boolean frv_elf_set_private_flags
74 PARAMS ((bfd *, flagword));
75 static bfd_boolean frv_elf_copy_private_bfd_data
76 PARAMS ((bfd *, bfd *));
77 static bfd_boolean frv_elf_merge_private_bfd_data
78 PARAMS ((bfd *, bfd *));
79 static bfd_boolean frv_elf_print_private_bfd_data
80 PARAMS ((bfd *, PTR));
81
82 static reloc_howto_type elf32_frv_howto_table [] =
83 {
84 /* This reloc does nothing. */
85 HOWTO (R_FRV_NONE, /* type */
86 0, /* rightshift */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
88 32, /* bitsize */
89 FALSE, /* pc_relative */
90 0, /* bitpos */
91 complain_overflow_bitfield, /* complain_on_overflow */
92 bfd_elf_generic_reloc, /* special_function */
93 "R_FRV_NONE", /* name */
94 FALSE, /* partial_inplace */
95 0, /* src_mask */
96 0, /* dst_mask */
97 FALSE), /* pcrel_offset */
98
99 /* A 32 bit absolute relocation. */
100 HOWTO (R_FRV_32, /* type */
101 0, /* rightshift */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
103 32, /* bitsize */
104 FALSE, /* pc_relative */
105 0, /* bitpos */
106 complain_overflow_bitfield, /* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_FRV_32", /* name */
109 FALSE, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE), /* pcrel_offset */
113
114 /* A 16 bit pc-relative relocation. */
115 HOWTO (R_FRV_LABEL16, /* type */
116 2, /* rightshift */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
118 16, /* bitsize */
119 TRUE, /* pc_relative */
120 0, /* bitpos */
121 complain_overflow_signed, /* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_FRV_LABEL16", /* name */
124 FALSE, /* partial_inplace */
125 0xffff, /* src_mask */
126 0xffff, /* dst_mask */
127 TRUE), /* pcrel_offset */
128
129 /* A 24-bit pc-relative relocation. */
130 HOWTO (R_FRV_LABEL24, /* type */
131 2, /* rightshift */
132 2, /* size (0 = byte, 1 = short, 2 = long) */
133 26, /* bitsize */
134 TRUE, /* pc_relative */
135 0, /* bitpos */
136 complain_overflow_bitfield, /* complain_on_overflow */
137 bfd_elf_generic_reloc, /* special_function */
138 "R_FRV_LABEL24", /* name */
139 FALSE, /* partial_inplace */
140 0x7e03ffff, /* src_mask */
141 0x7e03ffff, /* dst_mask */
142 TRUE), /* pcrel_offset */
143
144 HOWTO (R_FRV_LO16, /* type */
145 0, /* rightshift */
146 2, /* size (0 = byte, 1 = short, 2 = long) */
147 16, /* bitsize */
148 FALSE, /* pc_relative */
149 0, /* bitpos */
150 complain_overflow_dont, /* complain_on_overflow */
151 bfd_elf_generic_reloc, /* special_function */
152 "R_FRV_LO16", /* name */
153 FALSE, /* partial_inplace */
154 0xffff, /* src_mask */
155 0xffff, /* dst_mask */
156 FALSE), /* pcrel_offset */
157
158 HOWTO (R_FRV_HI16, /* type */
159 0, /* rightshift */
160 2, /* size (0 = byte, 1 = short, 2 = long) */
161 16, /* bitsize */
162 FALSE, /* pc_relative */
163 0, /* bitpos */
164 complain_overflow_dont, /* complain_on_overflow */
165 bfd_elf_generic_reloc, /* special_function */
166 "R_FRV_HI16", /* name */
167 FALSE, /* partial_inplace */
168 0xffff, /* src_mask */
169 0xffff, /* dst_mask */
170 FALSE), /* pcrel_offset */
171
172 HOWTO (R_FRV_GPREL12, /* type */
173 0, /* rightshift */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
175 12, /* bitsize */
176 FALSE, /* pc_relative */
177 0, /* bitpos */
178 complain_overflow_dont, /* complain_on_overflow */
179 bfd_elf_generic_reloc, /* special_function */
180 "R_FRV_GPREL12", /* name */
181 FALSE, /* partial_inplace */
182 0xfff, /* src_mask */
183 0xfff, /* dst_mask */
184 FALSE), /* pcrel_offset */
185
186 HOWTO (R_FRV_GPRELU12, /* type */
187 0, /* rightshift */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
189 12, /* bitsize */
190 FALSE, /* pc_relative */
191 0, /* bitpos */
192 complain_overflow_dont, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_FRV_GPRELU12", /* name */
195 FALSE, /* partial_inplace */
196 0xfff, /* src_mask */
197 0x3f03f, /* dst_mask */
198 FALSE), /* pcrel_offset */
199
200 HOWTO (R_FRV_GPREL32, /* type */
201 0, /* rightshift */
202 2, /* size (0 = byte, 1 = short, 2 = long) */
203 32, /* bitsize */
204 FALSE, /* pc_relative */
205 0, /* bitpos */
206 complain_overflow_dont, /* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_FRV_GPREL32", /* name */
209 FALSE, /* partial_inplace */
210 0xffffffff, /* src_mask */
211 0xffffffff, /* dst_mask */
212 FALSE), /* pcrel_offset */
213
214 HOWTO (R_FRV_GPRELHI, /* type */
215 0, /* rightshift */
216 2, /* size (0 = byte, 1 = short, 2 = long) */
217 16, /* bitsize */
218 FALSE, /* pc_relative */
219 0, /* bitpos */
220 complain_overflow_dont, /* complain_on_overflow */
221 bfd_elf_generic_reloc, /* special_function */
222 "R_FRV_GPRELHI", /* name */
223 FALSE, /* partial_inplace */
224 0xffff, /* src_mask */
225 0xffff, /* dst_mask */
226 FALSE), /* pcrel_offset */
227
228 HOWTO (R_FRV_GPRELLO, /* type */
229 0, /* rightshift */
230 2, /* size (0 = byte, 1 = short, 2 = long) */
231 16, /* bitsize */
232 FALSE, /* pc_relative */
233 0, /* bitpos */
234 complain_overflow_dont, /* complain_on_overflow */
235 bfd_elf_generic_reloc, /* special_function */
236 "R_FRV_GPRELLO", /* name */
237 FALSE, /* partial_inplace */
238 0xffff, /* src_mask */
239 0xffff, /* dst_mask */
240 FALSE), /* pcrel_offset */
241
242 /* A 12-bit signed operand with the GOT offset for the address of
243 the symbol. */
244 HOWTO (R_FRV_GOT12, /* type */
245 0, /* rightshift */
246 2, /* size (0 = byte, 1 = short, 2 = long) */
247 12, /* bitsize */
248 FALSE, /* pc_relative */
249 0, /* bitpos */
250 complain_overflow_signed, /* complain_on_overflow */
251 bfd_elf_generic_reloc, /* special_function */
252 "R_FRV_GOT12", /* name */
253 FALSE, /* partial_inplace */
254 0xfff, /* src_mask */
255 0xfff, /* dst_mask */
256 FALSE), /* pcrel_offset */
257
258 /* The upper 16 bits of the GOT offset for the address of the
259 symbol. */
260 HOWTO (R_FRV_GOTHI, /* type */
261 0, /* rightshift */
262 2, /* size (0 = byte, 1 = short, 2 = long) */
263 16, /* bitsize */
264 FALSE, /* pc_relative */
265 0, /* bitpos */
266 complain_overflow_dont, /* complain_on_overflow */
267 bfd_elf_generic_reloc, /* special_function */
268 "R_FRV_GOTHI", /* name */
269 FALSE, /* partial_inplace */
270 0xffff, /* src_mask */
271 0xffff, /* dst_mask */
272 FALSE), /* pcrel_offset */
273
274 /* The lower 16 bits of the GOT offset for the address of the
275 symbol. */
276 HOWTO (R_FRV_GOTLO, /* type */
277 0, /* rightshift */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
279 16, /* bitsize */
280 FALSE, /* pc_relative */
281 0, /* bitpos */
282 complain_overflow_dont, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_FRV_GOTLO", /* name */
285 FALSE, /* partial_inplace */
286 0xffff, /* src_mask */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
289
290 /* The 32-bit address of the canonical descriptor of a function. */
291 HOWTO (R_FRV_FUNCDESC, /* type */
292 0, /* rightshift */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
294 32, /* bitsize */
295 FALSE, /* pc_relative */
296 0, /* bitpos */
297 complain_overflow_bitfield, /* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_FRV_FUNCDESC", /* name */
300 FALSE, /* partial_inplace */
301 0xffffffff, /* src_mask */
302 0xffffffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
304
305 /* A 12-bit signed operand with the GOT offset for the address of
306 canonical descriptor of a function. */
307 HOWTO (R_FRV_FUNCDESC_GOT12, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 12, /* bitsize */
311 FALSE, /* pc_relative */
312 0, /* bitpos */
313 complain_overflow_signed, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_FRV_FUNCDESC_GOT12", /* name */
316 FALSE, /* partial_inplace */
317 0xfff, /* src_mask */
318 0xfff, /* dst_mask */
319 FALSE), /* pcrel_offset */
320
321 /* The upper 16 bits of the GOT offset for the address of the
322 canonical descriptor of a function. */
323 HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */
324 0, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 16, /* bitsize */
327 FALSE, /* pc_relative */
328 0, /* bitpos */
329 complain_overflow_dont, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_FRV_FUNCDESC_GOTHI", /* name */
332 FALSE, /* partial_inplace */
333 0xffff, /* src_mask */
334 0xffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
336
337 /* The lower 16 bits of the GOT offset for the address of the
338 canonical descriptor of a function. */
339 HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */
340 0, /* rightshift */
341 2, /* size (0 = byte, 1 = short, 2 = long) */
342 16, /* bitsize */
343 FALSE, /* pc_relative */
344 0, /* bitpos */
345 complain_overflow_dont, /* complain_on_overflow */
346 bfd_elf_generic_reloc, /* special_function */
347 "R_FRV_FUNCDESC_GOTLO", /* name */
348 FALSE, /* partial_inplace */
349 0xffff, /* src_mask */
350 0xffff, /* dst_mask */
351 FALSE), /* pcrel_offset */
352
353 /* The 32-bit address of the canonical descriptor of a function. */
354 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */
355 0, /* rightshift */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
357 64, /* bitsize */
358 FALSE, /* pc_relative */
359 0, /* bitpos */
360 complain_overflow_bitfield, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_FRV_FUNCDESC_VALUE", /* name */
363 FALSE, /* partial_inplace */
364 0xffffffff, /* src_mask */
365 0xffffffff, /* dst_mask */
366 FALSE), /* pcrel_offset */
367
368 /* A 12-bit signed operand with the GOT offset for the address of
369 canonical descriptor of a function. */
370 HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */
371 0, /* rightshift */
372 2, /* size (0 = byte, 1 = short, 2 = long) */
373 12, /* bitsize */
374 FALSE, /* pc_relative */
375 0, /* bitpos */
376 complain_overflow_signed, /* complain_on_overflow */
377 bfd_elf_generic_reloc, /* special_function */
378 "R_FRV_FUNCDESC_GOTOFF12", /* name */
379 FALSE, /* partial_inplace */
380 0xfff, /* src_mask */
381 0xfff, /* dst_mask */
382 FALSE), /* pcrel_offset */
383
384 /* The upper 16 bits of the GOT offset for the address of the
385 canonical descriptor of a function. */
386 HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */
387 0, /* rightshift */
388 2, /* size (0 = byte, 1 = short, 2 = long) */
389 16, /* bitsize */
390 FALSE, /* pc_relative */
391 0, /* bitpos */
392 complain_overflow_dont, /* complain_on_overflow */
393 bfd_elf_generic_reloc, /* special_function */
394 "R_FRV_FUNCDESC_GOTOFFHI", /* name */
395 FALSE, /* partial_inplace */
396 0xffff, /* src_mask */
397 0xffff, /* dst_mask */
398 FALSE), /* pcrel_offset */
399
400 /* The lower 16 bits of the GOT offset for the address of the
401 canonical descriptor of a function. */
402 HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */
403 0, /* rightshift */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
405 16, /* bitsize */
406 FALSE, /* pc_relative */
407 0, /* bitpos */
408 complain_overflow_dont, /* complain_on_overflow */
409 bfd_elf_generic_reloc, /* special_function */
410 "R_FRV_FUNCDESC_GOTOFFLO", /* name */
411 FALSE, /* partial_inplace */
412 0xffff, /* src_mask */
413 0xffff, /* dst_mask */
414 FALSE), /* pcrel_offset */
415
416 /* A 12-bit signed operand with the GOT offset for the address of
417 the symbol. */
418 HOWTO (R_FRV_GOTOFF12, /* type */
419 0, /* rightshift */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
421 12, /* bitsize */
422 FALSE, /* pc_relative */
423 0, /* bitpos */
424 complain_overflow_signed, /* complain_on_overflow */
425 bfd_elf_generic_reloc, /* special_function */
426 "R_FRV_GOTOFF12", /* name */
427 FALSE, /* partial_inplace */
428 0xfff, /* src_mask */
429 0xfff, /* dst_mask */
430 FALSE), /* pcrel_offset */
431
432 /* The upper 16 bits of the GOT offset for the address of the
433 symbol. */
434 HOWTO (R_FRV_GOTOFFHI, /* type */
435 0, /* rightshift */
436 2, /* size (0 = byte, 1 = short, 2 = long) */
437 16, /* bitsize */
438 FALSE, /* pc_relative */
439 0, /* bitpos */
440 complain_overflow_dont, /* complain_on_overflow */
441 bfd_elf_generic_reloc, /* special_function */
442 "R_FRV_GOTOFFHI", /* name */
443 FALSE, /* partial_inplace */
444 0xffff, /* src_mask */
445 0xffff, /* dst_mask */
446 FALSE), /* pcrel_offset */
447
448 /* The lower 16 bits of the GOT offset for the address of the
449 symbol. */
450 HOWTO (R_FRV_GOTOFFLO, /* type */
451 0, /* rightshift */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
453 16, /* bitsize */
454 FALSE, /* pc_relative */
455 0, /* bitpos */
456 complain_overflow_dont, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_FRV_GOTOFFLO", /* name */
459 FALSE, /* partial_inplace */
460 0xffff, /* src_mask */
461 0xffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
463
464 };
465
466 /* GNU extension to record C++ vtable hierarchy. */
467 static reloc_howto_type elf32_frv_vtinherit_howto =
468 HOWTO (R_FRV_GNU_VTINHERIT, /* type */
469 0, /* rightshift */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
471 0, /* bitsize */
472 FALSE, /* pc_relative */
473 0, /* bitpos */
474 complain_overflow_dont, /* complain_on_overflow */
475 NULL, /* special_function */
476 "R_FRV_GNU_VTINHERIT", /* name */
477 FALSE, /* partial_inplace */
478 0, /* src_mask */
479 0, /* dst_mask */
480 FALSE); /* pcrel_offset */
481
482 /* GNU extension to record C++ vtable member usage. */
483 static reloc_howto_type elf32_frv_vtentry_howto =
484 HOWTO (R_FRV_GNU_VTENTRY, /* type */
485 0, /* rightshift */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
487 0, /* bitsize */
488 FALSE, /* pc_relative */
489 0, /* bitpos */
490 complain_overflow_dont, /* complain_on_overflow */
491 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
492 "R_FRV_GNU_VTENTRY", /* name */
493 FALSE, /* partial_inplace */
494 0, /* src_mask */
495 0, /* dst_mask */
496 FALSE); /* pcrel_offset */
497
498 /* The following 3 relocations are REL. The only difference to the
499 entries in the table above are that partial_inplace is TRUE. */
500 static reloc_howto_type elf32_frv_rel_32_howto =
501 HOWTO (R_FRV_32, /* type */
502 0, /* rightshift */
503 2, /* size (0 = byte, 1 = short, 2 = long) */
504 32, /* bitsize */
505 FALSE, /* pc_relative */
506 0, /* bitpos */
507 complain_overflow_bitfield, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
509 "R_FRV_32", /* name */
510 TRUE, /* partial_inplace */
511 0xffffffff, /* src_mask */
512 0xffffffff, /* dst_mask */
513 FALSE); /* pcrel_offset */
514
515 static reloc_howto_type elf32_frv_rel_funcdesc_howto =
516 HOWTO (R_FRV_FUNCDESC, /* type */
517 0, /* rightshift */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
519 32, /* bitsize */
520 FALSE, /* pc_relative */
521 0, /* bitpos */
522 complain_overflow_bitfield, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_FRV_FUNCDESC", /* name */
525 TRUE, /* partial_inplace */
526 0xffffffff, /* src_mask */
527 0xffffffff, /* dst_mask */
528 FALSE); /* pcrel_offset */
529
530 static reloc_howto_type elf32_frv_rel_funcdesc_value_howto =
531 HOWTO (R_FRV_FUNCDESC_VALUE, /* type */
532 0, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 64, /* bitsize */
535 FALSE, /* pc_relative */
536 0, /* bitpos */
537 complain_overflow_bitfield, /* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_FRV_FUNCDESC_VALUE", /* name */
540 TRUE, /* partial_inplace */
541 0xffffffff, /* src_mask */
542 0xffffffff, /* dst_mask */
543 FALSE); /* pcrel_offset */
544
545 \f
546 /* Map BFD reloc types to FRV ELF reloc types. */
547 #if 0
548 struct frv_reloc_map
549 {
550 unsigned int bfd_reloc_val;
551 unsigned int frv_reloc_val;
552 };
553
554 static const struct frv_reloc_map frv_reloc_map [] =
555 {
556 { BFD_RELOC_NONE, R_FRV_NONE },
557 { BFD_RELOC_32, R_FRV_32 },
558 { BFD_RELOC_FRV_LABEL16, R_FRV_LABEL16 },
559 { BFD_RELOC_FRV_LABEL24, R_FRV_LABEL24 },
560 { BFD_RELOC_FRV_LO16, R_FRV_LO16 },
561 { BFD_RELOC_FRV_HI16, R_FRV_HI16 },
562 { BFD_RELOC_FRV_GPREL12, R_FRV_GPREL12 },
563 { BFD_RELOC_FRV_GPRELU12, R_FRV_GPRELU12 },
564 { BFD_RELOC_FRV_GPREL32, R_FRV_GPREL32 },
565 { BFD_RELOC_FRV_GPRELHI, R_FRV_GPRELHI },
566 { BFD_RELOC_FRV_GPRELLO, R_FRV_GPRELLO },
567 { BFD_RELOC_FRV_GOT12, R_FRV_GOT12 },
568 { BFD_RELOC_FRV_GOTHI, R_FRV_GOTHI },
569 { BFD_RELOC_FRV_GOTLO, R_FRV_GOTLO },
570 { BFD_RELOC_FRV_FUNCDESC, R_FRV_FUNCDESC },
571 { BFD_RELOC_FRV_FUNCDESC_GOT12, R_FRV_FUNCDESC_GOT12 },
572 { BFD_RELOC_FRV_FUNCDESC_GOTHI, R_FRV_FUNCDESC_GOTHI },
573 { BFD_RELOC_FRV_FUNCDESC_GOTLO, R_FRV_FUNCDESC_GOTLO },
574 { BFD_RELOC_FRV_FUNCDESC_VALUE, R_FRV_FUNCDESC_VALUE },
575 { BFD_RELOC_FRV_FUNCDESC_GOTOFF12, R_FRV_FUNCDESC_GOTOFF12 },
576 { BFD_RELOC_FRV_FUNCDESC_GOTOFFHI, R_FRV_FUNCDESC_GOTOFFHI },
577 { BFD_RELOC_FRV_FUNCDESC_GOTOFFLO, R_FRV_FUNCDESC_GOTOFFLO },
578 { BFD_RELOC_FRV_GOTOFF12, R_FRV_GOTOFF12 },
579 { BFD_RELOC_FRV_GOTOFFHI, R_FRV_GOTOFFHI },
580 { BFD_RELOC_FRV_GOTOFFLO, R_FRV_GOTOFFLO },
581 { BFD_RELOC_VTABLE_INHERIT, R_FRV_GNU_VTINHERIT },
582 { BFD_RELOC_VTABLE_ENTRY, R_FRV_GNU_VTENTRY },
583 };
584 #endif
585
586 extern const bfd_target bfd_elf32_frvfdpic_vec;
587 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_frvfdpic_vec)
588
589 /* An extension of the elf hash table data structure, containing some
590 additional FRV-specific data. */
591 struct frvfdpic_elf_link_hash_table
592 {
593 struct elf_link_hash_table elf;
594
595 /* A pointer to the .got section. */
596 asection *sgot;
597 /* A pointer to the .rel.got section. */
598 asection *sgotrel;
599 /* A pointer to the .rofixup section. */
600 asection *sgotfixup;
601 /* A pointer to the .plt section. */
602 asection *splt;
603 /* A pointer to the .rel.plt section. */
604 asection *spltrel;
605 /* GOT base offset. */
606 bfd_vma got0;
607 /* Location of the first non-lazy PLT entry, i.e., the number of
608 bytes taken by lazy PLT entries. */
609 bfd_vma plt0;
610 /* A hash table holding information about which symbols were
611 referenced with which PIC-related relocations. */
612 struct htab *relocs_info;
613 };
614
615 /* Get the FRV ELF linker hash table from a link_info structure. */
616
617 #define frvfdpic_hash_table(info) \
618 ((struct frvfdpic_elf_link_hash_table *) ((info)->hash))
619
620 #define frvfdpic_got_section(info) \
621 (frvfdpic_hash_table (info)->sgot)
622 #define frvfdpic_gotrel_section(info) \
623 (frvfdpic_hash_table (info)->sgotrel)
624 #define frvfdpic_gotfixup_section(info) \
625 (frvfdpic_hash_table (info)->sgotfixup)
626 #define frvfdpic_plt_section(info) \
627 (frvfdpic_hash_table (info)->splt)
628 #define frvfdpic_pltrel_section(info) \
629 (frvfdpic_hash_table (info)->spltrel)
630 #define frvfdpic_relocs_info(info) \
631 (frvfdpic_hash_table (info)->relocs_info)
632 #define frvfdpic_got_initial_offset(info) \
633 (frvfdpic_hash_table (info)->got0)
634 #define frvfdpic_plt_initial_offset(info) \
635 (frvfdpic_hash_table (info)->plt0)
636
637 /* Create an FRV ELF linker hash table. */
638
639 static struct bfd_link_hash_table *
640 frvfdpic_elf_link_hash_table_create (bfd *abfd)
641 {
642 struct frvfdpic_elf_link_hash_table *ret;
643 bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table);
644
645 ret = bfd_zalloc (abfd, amt);
646 if (ret == NULL)
647 return NULL;
648
649 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
650 _bfd_elf_link_hash_newfunc))
651 {
652 free (ret);
653 return NULL;
654 }
655
656 return &ret->elf.root;
657 }
658
659 /* Decide whether a reference to a symbol can be resolved locally or
660 not. If the symbol is protected, we want the local address, but
661 its function descriptor must be assigned by the dynamic linker. */
662 #define FRVFDPIC_SYM_LOCAL(INFO, H) \
663 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
664 || ! elf_hash_table (INFO)->dynamic_sections_created \
665 || (/* The condition below is an ugly hack to get .scommon data to
666 be regarded as local. For some reason the
667 ELF_LINK_HASH_DEF_REGULAR bit is not set on such common
668 symbols, and the SEC_IS_COMMON bit is not set any longer
669 when we need to perform this test. Hopefully this
670 approximation is good enough. */ \
671 ((H)->root.type == bfd_link_hash_defined \
672 || (H)->root.type == bfd_link_hash_defweak) \
673 && (H)->root.u.def.section->output_section \
674 && ((H)->root.u.def.section->flags & SEC_LINKER_CREATED)))
675 #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \
676 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
677
678 /* This structure collects information on what kind of GOT, PLT or
679 function descriptors are required by relocations that reference a
680 certain symbol. */
681 struct frvfdpic_relocs_info
682 {
683 /* The index of the symbol, as stored in the relocation r_info, if
684 we have a local symbol; -1 otherwise. */
685 long symndx;
686 union
687 {
688 /* The input bfd in which the symbol is defined, if it's a local
689 symbol. */
690 bfd *abfd;
691 /* If symndx == -1, the hash table entry corresponding to a global
692 symbol (even if it turns out to bind locally, in which case it
693 should ideally be replaced with section's symndx + addend). */
694 struct elf_link_hash_entry *h;
695 } d;
696 /* The addend of the relocation that references the symbol. */
697 bfd_vma addend;
698
699 /* The fields above are used to identify an entry. The fields below
700 contain information on how an entry is used and, later on, which
701 locations it was assigned. */
702 /* The following 3 fields record whether the symbol+addend above was
703 ever referenced with a GOT relocation. The 12 suffix indicates a
704 GOT12 relocation; los is used for GOTLO relocations that are not
705 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI
706 pairs. */
707 unsigned got12:1;
708 unsigned gotlos:1;
709 unsigned gothilo:1;
710 /* Whether a FUNCDESC relocation references symbol+addend. */
711 unsigned fd:1;
712 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
713 unsigned fdgot12:1;
714 unsigned fdgotlos:1;
715 unsigned fdgothilo:1;
716 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
717 unsigned fdgoff12:1;
718 unsigned fdgofflos:1;
719 unsigned fdgoffhilo:1;
720 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or
721 GOTOFFHI relocations. The addend doesn't really matter, since we
722 envision that this will only be used to check whether the symbol
723 is mapped to the same segment as the got. */
724 unsigned gotoff:1;
725 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
726 unsigned call:1;
727 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
728 relocation. */
729 unsigned sym:1;
730 /* Whether we need a PLT entry for a symbol. Should be implied by
731 something like:
732 (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */
733 unsigned plt:1;
734 /* Whether a function descriptor should be created in this link unit
735 for symbol+addend. Should be implied by something like:
736 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi
737 || ((fd || fdgot12 || fdgotlos || fdgothilo)
738 && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
739 unsigned privfd:1;
740 /* Whether a lazy PLT entry is needed for this symbol+addend.
741 Should be implied by something like:
742 (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)
743 && ! (info->flags & DF_BIND_NOW)) */
744 unsigned lazyplt:1;
745 /* Whether we've already emitted GOT relocations and PLT entries as
746 needed for this symbol. */
747 unsigned done:1;
748
749 /* The number of R_FRV_32, R_FRV_FUNCDESC and R_FRV_FUNCDESC_VALUE
750 relocations referencing the symbol. */
751 unsigned relocs32, relocsfd, relocsfdv;
752
753 /* The number of .rofixups entries and dynamic relocations allocated
754 for this symbol, minus any that might have already been used. */
755 unsigned fixups, dynrelocs;
756
757 /* The offsets of the GOT entries assigned to symbol+addend, to the
758 function descriptor's address, and to a function descriptor,
759 respectively. Should be zero if unassigned. The offsets are
760 counted from the value that will be assigned to the PIC register,
761 not from the beginning of the .got section. */
762 bfd_signed_vma got_entry, fdgot_entry, fd_entry;
763 /* The offsets of the PLT entries assigned to symbol+addend,
764 non-lazy and lazy, respectively. If unassigned, should be
765 (bfd_vma)-1. */
766 bfd_vma plt_entry, lzplt_entry;
767 };
768
769 /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */
770 static hashval_t
771 frvfdpic_relocs_info_hash (const void *entry_)
772 {
773 const struct frvfdpic_relocs_info *entry = entry_;
774
775 return (entry->symndx == -1
776 ? entry->d.h->root.root.hash
777 : entry->symndx + entry->d.abfd->id * 257) + entry->addend;
778 }
779
780 /* Test whether the key fields of two frvfdpic_relocs_info entries are
781 identical. */
782 static int
783 frvfdpic_relocs_info_eq (const void *entry1, const void *entry2)
784 {
785 const struct frvfdpic_relocs_info *e1 = entry1;
786 const struct frvfdpic_relocs_info *e2 = entry2;
787
788 return e1->symndx == e2->symndx && e1->addend == e2->addend
789 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd);
790 }
791
792 /* Find or create an entry in a hash table HT that matches the key
793 fields of the given ENTRY. If it's not found, memory for a new
794 entry is allocated in ABFD's obstack. */
795 static struct frvfdpic_relocs_info *
796 frvfdpic_relocs_info_find (struct htab *ht,
797 bfd *abfd,
798 const struct frvfdpic_relocs_info *entry,
799 enum insert_option insert)
800 {
801 struct frvfdpic_relocs_info **loc =
802 (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert);
803
804 if (! loc)
805 return NULL;
806
807 if (*loc)
808 return *loc;
809
810 *loc = bfd_zalloc (abfd, sizeof (**loc));
811
812 if (! *loc)
813 return *loc;
814
815 (*loc)->symndx = entry->symndx;
816 (*loc)->d = entry->d;
817 (*loc)->addend = entry->addend;
818 (*loc)->plt_entry = (bfd_vma)-1;
819 (*loc)->lzplt_entry = (bfd_vma)-1;
820
821 return *loc;
822 }
823
824 /* Obtain the address of the entry in HT associated with H's symbol +
825 addend, creating a new entry if none existed. ABFD is only used
826 for memory allocation purposes. */
827 inline static struct frvfdpic_relocs_info *
828 frvfdpic_relocs_info_for_global (struct htab *ht,
829 bfd *abfd,
830 struct elf_link_hash_entry *h,
831 bfd_vma addend,
832 enum insert_option insert)
833 {
834 struct frvfdpic_relocs_info entry;
835
836 entry.symndx = -1;
837 entry.d.h = h;
838 entry.addend = addend;
839
840 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert);
841 }
842
843 /* Obtain the address of the entry in HT associated with the SYMNDXth
844 local symbol of the input bfd ABFD, plus the addend, creating a new
845 entry if none existed. */
846 inline static struct frvfdpic_relocs_info *
847 frvfdpic_relocs_info_for_local (struct htab *ht,
848 bfd *abfd,
849 long symndx,
850 bfd_vma addend,
851 enum insert_option insert)
852 {
853 struct frvfdpic_relocs_info entry;
854
855 entry.symndx = symndx;
856 entry.d.abfd = abfd;
857 entry.addend = addend;
858
859 return frvfdpic_relocs_info_find (ht, abfd, &entry, insert);
860 }
861
862 /* Merge fields set by check_relocs() of two entries that end up being
863 mapped to the same (presumably global) symbol. */
864
865 inline static void
866 frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2,
867 struct frvfdpic_relocs_info const *e1)
868 {
869 e2->got12 |= e1->got12;
870 e2->gotlos |= e1->gotlos;
871 e2->gothilo |= e1->gothilo;
872 e2->fd |= e1->fd;
873 e2->fdgot12 |= e1->fdgot12;
874 e2->fdgotlos |= e1->fdgotlos;
875 e2->fdgothilo |= e1->fdgothilo;
876 e2->fdgoff12 |= e1->fdgoff12;
877 e2->fdgofflos |= e1->fdgofflos;
878 e2->fdgoffhilo |= e1->fdgoffhilo;
879 e2->gotoff |= e1->gotoff;
880 e2->call |= e1->call;
881 e2->sym |= e1->sym;
882
883 #if 0
884 /* These are set in _frvfdpic_count_got_plt_entries() or later, and this
885 function is only called in _frvfdpic_resolve_final_relocs_info(), that
886 runs just before it, so we don't have to worry about the fields
887 below. */
888
889 e2->plt |= e1->plt;
890 e2->privfd |= e1->privfd;
891 e2->lazyplt |= e1->lazyplt;
892 e2->done |= e1->done;
893
894 e2->relocs32 += e1->relocs32;
895 e2->relocsfd += e1->relocsfd;
896 e2->relocsfdv += e1->relocsfdv;
897 e2->fixups += e1->fixups;
898 e2->dynrelocs += e1->dynrelocs;
899
900 if (abs (e1->got_entry) < abs (e2->got_entry))
901 e2->got_entry = e1->got_entry;
902 if (abs (e1->fdgot_entry) < abs (e2->fdgot_entry))
903 e2->fdgot_entry = e1->fdgot_entry;
904 if (abs (e1->fd_entry) < abs (e2->fd_entry))
905 e2->fd_entry = e1->fd_entry;
906
907 if (e1->plt_entry < e2->plt_entry)
908 e2->plt_entry = e1->plt_entry;
909 if (e1->lzplt_entry < e2->lzplt_entry)
910 e2->lzplt_entry = e1->lzplt_entry;
911 #endif
912 }
913
914 /* Every block of 65535 lazy PLT entries shares a single call to the
915 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
916 32767, counting from 0). All other lazy PLT entries branch to it
917 in a single instruction. */
918
919 #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4)
920 #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767)
921
922 /* Add a dynamic relocation to the SRELOC section. */
923
924 inline static bfd_vma
925 _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
926 int reloc_type, long dynindx, bfd_vma addend,
927 struct frvfdpic_relocs_info *entry)
928 {
929 Elf_Internal_Rela outrel;
930 bfd_vma reloc_offset;
931
932 outrel.r_offset = offset;
933 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
934 outrel.r_addend = addend;
935
936 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel);
937 BFD_ASSERT (reloc_offset < sreloc->_raw_size);
938 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
939 sreloc->contents + reloc_offset);
940 sreloc->reloc_count++;
941
942 BFD_ASSERT (entry->dynrelocs > 0);
943 entry->dynrelocs--;
944
945 return reloc_offset;
946 }
947
948 /* Add a fixup to the ROFIXUP section. */
949
950 static bfd_vma
951 _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset,
952 struct frvfdpic_relocs_info *entry)
953 {
954 bfd_vma fixup_offset;
955
956 if (rofixup->flags & SEC_EXCLUDE)
957 return -1;
958
959 fixup_offset = rofixup->reloc_count * 4;
960 if (rofixup->contents)
961 {
962 BFD_ASSERT (fixup_offset < rofixup->_raw_size);
963 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset);
964 }
965 rofixup->reloc_count++;
966
967 if (entry)
968 {
969 BFD_ASSERT (entry->fixups > 0);
970 entry->fixups--;
971 }
972
973 return fixup_offset;
974 }
975
976 /* Find the segment number in which OSEC, and output section, is
977 located. */
978
979 static unsigned
980 _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec)
981 {
982 struct elf_segment_map *m;
983 Elf_Internal_Phdr *p;
984
985 /* Find the segment that contains the output_section. */
986 for (m = elf_tdata (output_bfd)->segment_map,
987 p = elf_tdata (output_bfd)->phdr;
988 m != NULL;
989 m = m->next, p++)
990 {
991 int i;
992
993 for (i = m->count - 1; i >= 0; i--)
994 if (m->sections[i] == osec)
995 break;
996
997 if (i >= 0)
998 break;
999 }
1000
1001 return p - elf_tdata (output_bfd)->phdr;
1002 }
1003
1004 inline static bfd_boolean
1005 _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
1006 {
1007 unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec);
1008
1009 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
1010 }
1011
1012 /* Generate relocations for GOT entries, function descriptors, and
1013 code for PLT and lazy PLT entries. */
1014
1015 inline static bfd_boolean
1016 _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry,
1017 bfd *output_bfd,
1018 struct bfd_link_info *info,
1019 asection *sec,
1020 Elf_Internal_Sym *sym,
1021 bfd_vma addend)
1022
1023 {
1024 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1;
1025 int dynindx = -1;
1026
1027 if (entry->done)
1028 return TRUE;
1029 entry->done = 1;
1030
1031 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry)
1032 {
1033 /* If the symbol is dynamic, consider it for dynamic
1034 relocations, otherwise decay to section + offset. */
1035 if (entry->symndx == -1 && entry->d.h->dynindx != -1)
1036 dynindx = entry->d.h->dynindx;
1037 else
1038 {
1039 if (sec->output_section
1040 && ! bfd_is_abs_section (sec->output_section)
1041 && ! bfd_is_und_section (sec->output_section))
1042 dynindx = elf_section_data (sec->output_section)->dynindx;
1043 else
1044 dynindx = 0;
1045 }
1046 }
1047
1048 /* Generate relocation for GOT entry pointing to the symbol. */
1049 if (entry->got_entry)
1050 {
1051 int idx = dynindx;
1052 bfd_vma ad = addend;
1053
1054 /* If the symbol is dynamic but binds locally, use
1055 section+offset. */
1056 if (sec && (entry->symndx != -1
1057 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1058 {
1059 if (entry->symndx == -1)
1060 ad += entry->d.h->root.u.def.value;
1061 else
1062 ad += sym->st_value;
1063 ad += sec->output_offset;
1064 if (sec->output_section && elf_section_data (sec->output_section))
1065 idx = elf_section_data (sec->output_section)->dynindx;
1066 else
1067 idx = 0;
1068 }
1069
1070 /* If we're linking an executable at a fixed address, we can
1071 omit the dynamic relocation as long as the symbol is local to
1072 this module. */
1073 if (info->executable && !info->pie
1074 && (entry->symndx != -1
1075 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1076 {
1077 if (sec)
1078 ad += sec->output_section->vma;
1079 if (entry->symndx != -1
1080 || entry->d.h->root.type != bfd_link_hash_undefweak)
1081 _frvfdpic_add_rofixup (output_bfd,
1082 frvfdpic_gotfixup_section (info),
1083 frvfdpic_got_section (info)->output_section
1084 ->vma
1085 + frvfdpic_got_section (info)->output_offset
1086 + frvfdpic_got_initial_offset (info)
1087 + entry->got_entry, entry);
1088 }
1089 else
1090 _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info),
1091 _bfd_elf_section_offset
1092 (output_bfd, info,
1093 frvfdpic_got_section (info),
1094 frvfdpic_got_initial_offset (info)
1095 + entry->got_entry)
1096 + frvfdpic_got_section (info)
1097 ->output_section->vma
1098 + frvfdpic_got_section (info)->output_offset,
1099 R_FRV_32, idx, ad, entry);
1100
1101 bfd_put_32 (output_bfd, ad,
1102 frvfdpic_got_section (info)->contents
1103 + frvfdpic_got_initial_offset (info)
1104 + entry->got_entry);
1105 }
1106
1107 /* Generate relocation for GOT entry pointing to a canonical
1108 function descriptor. */
1109 if (entry->fdgot_entry)
1110 {
1111 int reloc, idx;
1112 bfd_vma ad = 0;
1113
1114 if (! (entry->symndx == -1
1115 && entry->d.h->root.type == bfd_link_hash_undefweak
1116 && FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1117 {
1118 /* If the symbol is dynamic and there may be dynamic symbol
1119 resolution because we are, or are linked with, a shared
1120 library, emit a FUNCDESC relocation such that the dynamic
1121 linker will allocate the function descriptor. If the
1122 symbol needs a non-local function descriptor but binds
1123 locally (e.g., its visibility is protected, emit a
1124 dynamic relocation decayed to section+offset. */
1125 if (entry->symndx == -1
1126 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)
1127 && FRVFDPIC_SYM_LOCAL (info, entry->d.h)
1128 && !(info->executable && !info->pie))
1129 {
1130 reloc = R_FRV_FUNCDESC;
1131 idx = elf_section_data (entry->d.h->root.u.def.section
1132 ->output_section)->dynindx;
1133 ad = entry->d.h->root.u.def.section->output_offset
1134 + entry->d.h->root.u.def.value;
1135 }
1136 else if (entry->symndx == -1
1137 && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))
1138 {
1139 reloc = R_FRV_FUNCDESC;
1140 idx = dynindx;
1141 ad = addend;
1142 if (ad)
1143 return FALSE;
1144 }
1145 else
1146 {
1147 /* Otherwise, we know we have a private function descriptor,
1148 so reference it directly. */
1149 if (elf_hash_table (info)->dynamic_sections_created)
1150 BFD_ASSERT (entry->privfd);
1151 reloc = R_FRV_32;
1152 idx = elf_section_data (frvfdpic_got_section (info)
1153 ->output_section)->dynindx;
1154 ad = frvfdpic_got_section (info)->output_offset
1155 + frvfdpic_got_initial_offset (info) + entry->fd_entry;
1156 }
1157
1158 /* If there is room for dynamic symbol resolution, emit the
1159 dynamic relocation. However, if we're linking an
1160 executable at a fixed location, we won't have emitted a
1161 dynamic symbol entry for the got section, so idx will be
1162 zero, which means we can and should compute the address
1163 of the private descriptor ourselves. */
1164 if (info->executable && !info->pie
1165 && (entry->symndx != -1
1166 || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)))
1167 {
1168 ad += frvfdpic_got_section (info)->output_section->vma;
1169 _frvfdpic_add_rofixup (output_bfd,
1170 frvfdpic_gotfixup_section (info),
1171 frvfdpic_got_section (info)
1172 ->output_section->vma
1173 + frvfdpic_got_section (info)
1174 ->output_offset
1175 + frvfdpic_got_initial_offset (info)
1176 + entry->fdgot_entry, entry);
1177 }
1178 else
1179 _frvfdpic_add_dyn_reloc (output_bfd,
1180 frvfdpic_gotrel_section (info),
1181 _bfd_elf_section_offset
1182 (output_bfd, info,
1183 frvfdpic_got_section (info),
1184 frvfdpic_got_initial_offset (info)
1185 + entry->fdgot_entry)
1186 + frvfdpic_got_section (info)
1187 ->output_section->vma
1188 + frvfdpic_got_section (info)
1189 ->output_offset,
1190 reloc, idx, ad, entry);
1191 }
1192
1193 bfd_put_32 (output_bfd, ad,
1194 frvfdpic_got_section (info)->contents
1195 + frvfdpic_got_initial_offset (info)
1196 + entry->fdgot_entry);
1197 }
1198
1199 /* Generate relocation to fill in a private function descriptor in
1200 the GOT. */
1201 if (entry->fd_entry)
1202 {
1203 int idx = dynindx;
1204 bfd_vma ad = addend;
1205 bfd_vma ofst;
1206 long lowword, highword;
1207
1208 /* If the symbol is dynamic but binds locally, use
1209 section+offset. */
1210 if (sec && (entry->symndx != -1
1211 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1212 {
1213 if (entry->symndx == -1)
1214 ad += entry->d.h->root.u.def.value;
1215 else
1216 ad += sym->st_value;
1217 ad += sec->output_offset;
1218 if (sec->output_section && elf_section_data (sec->output_section))
1219 idx = elf_section_data (sec->output_section)->dynindx;
1220 else
1221 idx = 0;
1222 }
1223
1224 /* If we're linking an executable at a fixed address, we can
1225 omit the dynamic relocation as long as the symbol is local to
1226 this module. */
1227 if (info->executable && !info->pie
1228 && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h)))
1229 {
1230 if (sec)
1231 ad += sec->output_section->vma;
1232 ofst = 0;
1233 if (entry->symndx != -1
1234 || entry->d.h->root.type != bfd_link_hash_undefweak)
1235 {
1236 _frvfdpic_add_rofixup (output_bfd,
1237 frvfdpic_gotfixup_section (info),
1238 frvfdpic_got_section (info)
1239 ->output_section->vma
1240 + frvfdpic_got_section (info)
1241 ->output_offset
1242 + frvfdpic_got_initial_offset (info)
1243 + entry->fd_entry, entry);
1244 _frvfdpic_add_rofixup (output_bfd,
1245 frvfdpic_gotfixup_section (info),
1246 frvfdpic_got_section (info)
1247 ->output_section->vma
1248 + frvfdpic_got_section (info)
1249 ->output_offset
1250 + frvfdpic_got_initial_offset (info)
1251 + entry->fd_entry + 4, entry);
1252 }
1253 }
1254 else
1255 {
1256 ofst =
1257 _frvfdpic_add_dyn_reloc (output_bfd,
1258 entry->lazyplt
1259 ? frvfdpic_pltrel_section (info)
1260 : frvfdpic_gotrel_section (info),
1261 _bfd_elf_section_offset
1262 (output_bfd, info,
1263 frvfdpic_got_section (info),
1264 frvfdpic_got_initial_offset (info)
1265 + entry->fd_entry)
1266 + frvfdpic_got_section (info)
1267 ->output_section->vma
1268 + frvfdpic_got_section (info)
1269 ->output_offset,
1270 R_FRV_FUNCDESC_VALUE, idx, ad, entry);
1271 }
1272
1273 /* If we've omitted the dynamic relocation, just emit the fixed
1274 addresses of the symbol and of the local GOT base offset. */
1275 if (info->executable && !info->pie && sec && sec->output_section)
1276 {
1277 lowword = ad;
1278 highword = frvfdpic_got_section (info)->output_section->vma
1279 + frvfdpic_got_section (info)->output_offset
1280 + frvfdpic_got_initial_offset (info);
1281 }
1282 else if (entry->lazyplt)
1283 {
1284 if (ad)
1285 return FALSE;
1286
1287 fd_lazy_rel_offset = ofst;
1288
1289 /* A function descriptor used for lazy or local resolving is
1290 initialized such that its high word contains the output
1291 section index in which the PLT entries are located, and
1292 the low word contains the address of the lazy PLT entry
1293 entry point, that must be within the memory region
1294 assigned to that section. */
1295 lowword = entry->lzplt_entry + 4
1296 + frvfdpic_plt_section (info)->output_offset
1297 + frvfdpic_plt_section (info)->output_section->vma;
1298 highword = _frvfdpic_osec_to_segment
1299 (output_bfd, frvfdpic_plt_section (info)->output_section);
1300 }
1301 else
1302 {
1303 /* A function descriptor for a local function gets the index
1304 of the section. For a non-local function, it's
1305 disregarded. */
1306 lowword = ad;
1307 if (entry->symndx == -1 && entry->d.h->dynindx != -1
1308 && entry->d.h->dynindx == idx)
1309 highword = 0;
1310 else
1311 highword = _frvfdpic_osec_to_segment
1312 (output_bfd, sec->output_section);
1313 }
1314
1315 bfd_put_32 (output_bfd, lowword,
1316 frvfdpic_got_section (info)->contents
1317 + frvfdpic_got_initial_offset (info)
1318 + entry->fd_entry);
1319 bfd_put_32 (output_bfd, highword,
1320 frvfdpic_got_section (info)->contents
1321 + frvfdpic_got_initial_offset (info)
1322 + entry->fd_entry + 4);
1323 }
1324
1325 /* Generate code for the PLT entry. */
1326 if (entry->plt_entry != (bfd_vma) -1)
1327 {
1328 bfd_byte *plt_code = frvfdpic_plt_section (info)->contents
1329 + entry->plt_entry;
1330
1331 BFD_ASSERT (entry->fd_entry);
1332
1333 /* Figure out what kind of PLT entry we need, depending on the
1334 location of the function descriptor within the GOT. */
1335 if (entry->fd_entry >= -(1 << (12 - 1))
1336 && entry->fd_entry < (1 << (12 - 1)))
1337 {
1338 /* lddi @(gr15, fd_entry), gr14 */
1339 bfd_put_32 (output_bfd,
1340 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)),
1341 plt_code);
1342 plt_code += 4;
1343 }
1344 else
1345 {
1346 if (entry->fd_entry >= -(1 << (16 - 1))
1347 && entry->fd_entry < (1 << (16 - 1)))
1348 {
1349 /* setlos lo(fd_entry), gr14 */
1350 bfd_put_32 (output_bfd,
1351 0x9cfc0000
1352 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)),
1353 plt_code);
1354 plt_code += 4;
1355 }
1356 else
1357 {
1358 /* sethi.p hi(fd_entry), gr14
1359 setlo lo(fd_entry), gr14 */
1360 bfd_put_32 (output_bfd,
1361 0x1cf80000
1362 | ((entry->fd_entry >> 16)
1363 & (((bfd_vma)1 << 16) - 1)),
1364 plt_code);
1365 bfd_put_32 (output_bfd,
1366 0x9cf40000
1367 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)),
1368 plt_code);
1369 plt_code += 8;
1370 }
1371 /* ldd @(gr14,gr15),gr14 */
1372 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code);
1373 plt_code += 4;
1374 }
1375 /* jmpl @(gr14,gr0) */
1376 bfd_put_32 (output_bfd, 0x8030e000, plt_code);
1377 }
1378
1379 /* Generate code for the lazy PLT entry. */
1380 if (entry->lzplt_entry != (bfd_vma) -1)
1381 {
1382 bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents
1383 + entry->lzplt_entry;
1384 bfd_vma resolverStub_addr;
1385
1386 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code);
1387 lzplt_code += 4;
1388
1389 resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE
1390 * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC;
1391 if (resolverStub_addr >= frvfdpic_plt_initial_offset (info))
1392 resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12;
1393
1394 if (entry->lzplt_entry == resolverStub_addr)
1395 {
1396 /* This is a lazy PLT entry that includes a resolver call. */
1397 /* ldd @(gr15,gr0), gr4
1398 jmpl @(gr4,gr0) */
1399 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code);
1400 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4);
1401 }
1402 else
1403 {
1404 /* bra resolverStub */
1405 bfd_put_32 (output_bfd,
1406 0xc01a0000
1407 | (((resolverStub_addr - entry->lzplt_entry)
1408 / 4) & (((bfd_vma)1 << 16) - 1)),
1409 lzplt_code);
1410 }
1411 }
1412
1413 return TRUE;
1414 }
1415
1416 /* Handle an FRV small data reloc. */
1417
1418 static bfd_reloc_status_type
1419 elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation,
1420 contents, value)
1421 struct bfd_link_info *info;
1422 bfd *input_bfd;
1423 asection *input_section;
1424 Elf_Internal_Rela *relocation;
1425 bfd_byte *contents;
1426 bfd_vma value;
1427 {
1428 bfd_vma insn;
1429 bfd_vma gp;
1430 struct bfd_link_hash_entry *h;
1431
1432 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1433
1434 gp = (h->u.def.value
1435 + h->u.def.section->output_section->vma
1436 + h->u.def.section->output_offset);
1437
1438 value -= input_section->output_section->vma;
1439 value -= (gp - input_section->output_section->vma);
1440
1441 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1442
1443 value += relocation->r_addend;
1444
1445 if ((long) value > 0x7ff || (long) value < -0x800)
1446 return bfd_reloc_overflow;
1447
1448 bfd_put_32 (input_bfd,
1449 (insn & 0xfffff000) | (value & 0xfff),
1450 contents + relocation->r_offset);
1451
1452 return bfd_reloc_ok;
1453 }
1454
1455 /* Handle an FRV small data reloc. for the u12 field. */
1456
1457 static bfd_reloc_status_type
1458 elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation,
1459 contents, value)
1460 struct bfd_link_info *info;
1461 bfd *input_bfd;
1462 asection *input_section;
1463 Elf_Internal_Rela *relocation;
1464 bfd_byte *contents;
1465 bfd_vma value;
1466 {
1467 bfd_vma insn;
1468 bfd_vma gp;
1469 struct bfd_link_hash_entry *h;
1470 bfd_vma mask;
1471
1472 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1473
1474 gp = (h->u.def.value
1475 + h->u.def.section->output_section->vma
1476 + h->u.def.section->output_offset);
1477
1478 value -= input_section->output_section->vma;
1479 value -= (gp - input_section->output_section->vma);
1480
1481 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1482
1483 value += relocation->r_addend;
1484
1485 if ((long) value > 0x7ff || (long) value < -0x800)
1486 return bfd_reloc_overflow;
1487
1488 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */
1489 mask = 0x3f03f;
1490 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f);
1491
1492 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1493
1494 return bfd_reloc_ok;
1495 }
1496
1497 /* Handle an FRV ELF HI16 reloc. */
1498
1499 static bfd_reloc_status_type
1500 elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value)
1501 bfd *input_bfd;
1502 Elf_Internal_Rela *relhi;
1503 bfd_byte *contents;
1504 bfd_vma value;
1505 {
1506 bfd_vma insn;
1507
1508 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
1509
1510 value += relhi->r_addend;
1511 value = ((value >> 16) & 0xffff);
1512
1513 insn = (insn & 0xffff0000) | value;
1514
1515 if ((long) value > 0xffff || (long) value < -0x10000)
1516 return bfd_reloc_overflow;
1517
1518 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset);
1519 return bfd_reloc_ok;
1520
1521 }
1522 static bfd_reloc_status_type
1523 elf32_frv_relocate_lo16 (input_bfd, rello, contents, value)
1524 bfd *input_bfd;
1525 Elf_Internal_Rela *rello;
1526 bfd_byte *contents;
1527 bfd_vma value;
1528 {
1529 bfd_vma insn;
1530
1531 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
1532
1533 value += rello->r_addend;
1534 value = value & 0xffff;
1535
1536 insn = (insn & 0xffff0000) | value;
1537
1538 if ((long) value > 0xffff || (long) value < -0x10000)
1539 return bfd_reloc_overflow;
1540
1541 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
1542 return bfd_reloc_ok;
1543 }
1544
1545 /* Perform the relocation for the CALL label24 instruction. */
1546
1547 static bfd_reloc_status_type
1548 elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value)
1549 bfd *input_bfd;
1550 asection *input_section;
1551 Elf_Internal_Rela *rello;
1552 bfd_byte *contents;
1553 bfd_vma value;
1554 {
1555 bfd_vma insn;
1556 bfd_vma label6;
1557 bfd_vma label18;
1558
1559 /* The format for the call instruction is:
1560
1561 0 000000 0001111 000000000000000000
1562 label6 opcode label18
1563
1564 The branch calculation is: pc + (4*label24)
1565 where label24 is the concatenation of label6 and label18. */
1566
1567 /* Grab the instruction. */
1568 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
1569
1570 value -= input_section->output_section->vma + input_section->output_offset;
1571 value -= rello->r_offset;
1572 value += rello->r_addend;
1573
1574 value = value >> 2;
1575
1576 label6 = value & 0xfc0000;
1577 label6 = label6 << 7;
1578
1579 label18 = value & 0x3ffff;
1580
1581 insn = insn & 0x803c0000;
1582 insn = insn | label6;
1583 insn = insn | label18;
1584
1585 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
1586
1587 return bfd_reloc_ok;
1588 }
1589
1590 static bfd_reloc_status_type
1591 elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation,
1592 contents, value)
1593 struct bfd_link_info *info;
1594 bfd *input_bfd;
1595 asection *input_section;
1596 Elf_Internal_Rela *relocation;
1597 bfd_byte *contents;
1598 bfd_vma value;
1599 {
1600 bfd_vma insn;
1601 bfd_vma gp;
1602 struct bfd_link_hash_entry *h;
1603
1604 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1605
1606 gp = (h->u.def.value
1607 + h->u.def.section->output_section->vma
1608 + h->u.def.section->output_offset);
1609
1610 value -= input_section->output_section->vma;
1611 value -= (gp - input_section->output_section->vma);
1612 value += relocation->r_addend;
1613 value = ((value >> 16) & 0xffff);
1614
1615 if ((long) value > 0xffff || (long) value < -0x10000)
1616 return bfd_reloc_overflow;
1617
1618 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1619 insn = (insn & 0xffff0000) | value;
1620
1621 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1622 return bfd_reloc_ok;
1623 }
1624
1625 static bfd_reloc_status_type
1626 elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation,
1627 contents, value)
1628 struct bfd_link_info *info;
1629 bfd *input_bfd;
1630 asection *input_section;
1631 Elf_Internal_Rela *relocation;
1632 bfd_byte *contents;
1633 bfd_vma value;
1634 {
1635 bfd_vma insn;
1636 bfd_vma gp;
1637 struct bfd_link_hash_entry *h;
1638
1639 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1640
1641 gp = (h->u.def.value
1642 + h->u.def.section->output_section->vma
1643 + h->u.def.section->output_offset);
1644
1645 value -= input_section->output_section->vma;
1646 value -= (gp - input_section->output_section->vma);
1647 value += relocation->r_addend;
1648 value = value & 0xffff;
1649
1650 if ((long) value > 0xffff || (long) value < -0x10000)
1651 return bfd_reloc_overflow;
1652
1653 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1654 insn = (insn & 0xffff0000) | value;
1655
1656 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1657
1658 return bfd_reloc_ok;
1659 }
1660
1661 static reloc_howto_type *
1662 frv_reloc_type_lookup (abfd, code)
1663 bfd *abfd ATTRIBUTE_UNUSED;
1664 bfd_reloc_code_real_type code;
1665 {
1666 switch (code)
1667 {
1668 default:
1669 break;
1670
1671 case BFD_RELOC_NONE:
1672 return &elf32_frv_howto_table[ (int) R_FRV_NONE];
1673
1674 case BFD_RELOC_32:
1675 if (elf_elfheader (abfd)->e_type == ET_EXEC
1676 || elf_elfheader (abfd)->e_type == ET_DYN)
1677 return &elf32_frv_rel_32_howto;
1678 /* Fall through. */
1679 case BFD_RELOC_CTOR:
1680 return &elf32_frv_howto_table[ (int) R_FRV_32];
1681
1682 case BFD_RELOC_FRV_LABEL16:
1683 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16];
1684
1685 case BFD_RELOC_FRV_LABEL24:
1686 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24];
1687
1688 case BFD_RELOC_FRV_LO16:
1689 return &elf32_frv_howto_table[ (int) R_FRV_LO16];
1690
1691 case BFD_RELOC_FRV_HI16:
1692 return &elf32_frv_howto_table[ (int) R_FRV_HI16];
1693
1694 case BFD_RELOC_FRV_GPREL12:
1695 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12];
1696
1697 case BFD_RELOC_FRV_GPRELU12:
1698 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12];
1699
1700 case BFD_RELOC_FRV_GPREL32:
1701 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32];
1702
1703 case BFD_RELOC_FRV_GPRELHI:
1704 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI];
1705
1706 case BFD_RELOC_FRV_GPRELLO:
1707 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO];
1708
1709 case BFD_RELOC_FRV_GOT12:
1710 return &elf32_frv_howto_table[ (int) R_FRV_GOT12];
1711
1712 case BFD_RELOC_FRV_GOTHI:
1713 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI];
1714
1715 case BFD_RELOC_FRV_GOTLO:
1716 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO];
1717
1718 case BFD_RELOC_FRV_FUNCDESC:
1719 if (elf_elfheader (abfd)->e_type == ET_EXEC
1720 || elf_elfheader (abfd)->e_type == ET_DYN)
1721 return &elf32_frv_rel_funcdesc_howto;
1722 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC];
1723
1724 case BFD_RELOC_FRV_FUNCDESC_GOT12:
1725 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12];
1726
1727 case BFD_RELOC_FRV_FUNCDESC_GOTHI:
1728 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI];
1729
1730 case BFD_RELOC_FRV_FUNCDESC_GOTLO:
1731 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO];
1732
1733 case BFD_RELOC_FRV_FUNCDESC_VALUE:
1734 if (elf_elfheader (abfd)->e_type == ET_EXEC
1735 || elf_elfheader (abfd)->e_type == ET_DYN)
1736 return &elf32_frv_rel_funcdesc_value_howto;
1737 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE];
1738
1739 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12:
1740 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12];
1741
1742 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI:
1743 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI];
1744
1745 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO:
1746 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO];
1747
1748 case BFD_RELOC_FRV_GOTOFF12:
1749 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12];
1750
1751 case BFD_RELOC_FRV_GOTOFFHI:
1752 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI];
1753
1754 case BFD_RELOC_FRV_GOTOFFLO:
1755 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO];
1756
1757 case BFD_RELOC_VTABLE_INHERIT:
1758 return &elf32_frv_vtinherit_howto;
1759
1760 case BFD_RELOC_VTABLE_ENTRY:
1761 return &elf32_frv_vtentry_howto;
1762 }
1763
1764 return NULL;
1765 }
1766
1767 /* Set the howto pointer for an FRV ELF reloc. */
1768
1769 static void
1770 frv_info_to_howto_rela (abfd, cache_ptr, dst)
1771 bfd *abfd ATTRIBUTE_UNUSED;
1772 arelent *cache_ptr;
1773 Elf_Internal_Rela *dst;
1774 {
1775 unsigned int r_type;
1776
1777 r_type = ELF32_R_TYPE (dst->r_info);
1778 switch (r_type)
1779 {
1780 case R_FRV_GNU_VTINHERIT:
1781 cache_ptr->howto = &elf32_frv_vtinherit_howto;
1782 break;
1783
1784 case R_FRV_GNU_VTENTRY:
1785 cache_ptr->howto = &elf32_frv_vtentry_howto;
1786 break;
1787
1788 default:
1789 cache_ptr->howto = & elf32_frv_howto_table [r_type];
1790 break;
1791 }
1792 }
1793
1794 /* Set the howto pointer for an FRV ELF REL reloc. */
1795 static void
1796 frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1797 arelent *cache_ptr, Elf_Internal_Rela *dst)
1798 {
1799 unsigned int r_type;
1800
1801 r_type = ELF32_R_TYPE (dst->r_info);
1802 switch (r_type)
1803 {
1804 case R_FRV_32:
1805 cache_ptr->howto = &elf32_frv_rel_32_howto;
1806 break;
1807
1808 case R_FRV_FUNCDESC:
1809 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto;
1810 break;
1811
1812 case R_FRV_FUNCDESC_VALUE:
1813 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto;
1814 break;
1815
1816 default:
1817 cache_ptr->howto = NULL;
1818 break;
1819 }
1820 }
1821 \f
1822 /* Perform a single relocation. By default we use the standard BFD
1823 routines, but a few relocs, we have to do them ourselves. */
1824
1825 static bfd_reloc_status_type
1826 frv_final_link_relocate (howto, input_bfd, input_section, contents, rel,
1827 relocation)
1828 reloc_howto_type *howto;
1829 bfd *input_bfd;
1830 asection *input_section;
1831 bfd_byte *contents;
1832 Elf_Internal_Rela *rel;
1833 bfd_vma relocation;
1834 {
1835 return _bfd_final_link_relocate (howto, input_bfd, input_section,
1836 contents, rel->r_offset, relocation,
1837 rel->r_addend);
1838 }
1839
1840 \f
1841 /* Relocate an FRV ELF section.
1842
1843 The RELOCATE_SECTION function is called by the new ELF backend linker
1844 to handle the relocations for a section.
1845
1846 The relocs are always passed as Rela structures; if the section
1847 actually uses Rel structures, the r_addend field will always be
1848 zero.
1849
1850 This function is responsible for adjusting the section contents as
1851 necessary, and (if using Rela relocs and generating a relocatable
1852 output file) adjusting the reloc addend as necessary.
1853
1854 This function does not have to worry about setting the reloc
1855 address or the reloc symbol index.
1856
1857 LOCAL_SYMS is a pointer to the swapped in local symbols.
1858
1859 LOCAL_SECTIONS is an array giving the section in the input file
1860 corresponding to the st_shndx field of each local symbol.
1861
1862 The global hash table entry for the global symbols can be found
1863 via elf_sym_hashes (input_bfd).
1864
1865 When generating relocatable output, this function must handle
1866 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1867 going to be the section symbol corresponding to the output
1868 section, which means that the addend must be adjusted
1869 accordingly. */
1870
1871 static bfd_boolean
1872 elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section,
1873 contents, relocs, local_syms, local_sections)
1874 bfd *output_bfd ATTRIBUTE_UNUSED;
1875 struct bfd_link_info *info;
1876 bfd *input_bfd;
1877 asection *input_section;
1878 bfd_byte *contents;
1879 Elf_Internal_Rela *relocs;
1880 Elf_Internal_Sym *local_syms;
1881 asection **local_sections;
1882 {
1883 Elf_Internal_Shdr *symtab_hdr;
1884 struct elf_link_hash_entry **sym_hashes;
1885 Elf_Internal_Rela *rel;
1886 Elf_Internal_Rela *relend;
1887 unsigned isec_segment, got_segment, plt_segment, gprel_segment,
1888 check_segment[2];
1889 int silence_segment_error = !(info->shared || info->pie);
1890
1891 if (info->relocatable)
1892 return TRUE;
1893
1894 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1895 sym_hashes = elf_sym_hashes (input_bfd);
1896 relend = relocs + input_section->reloc_count;
1897
1898 isec_segment = _frvfdpic_osec_to_segment (output_bfd,
1899 input_section->output_section);
1900 if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info))
1901 got_segment = _frvfdpic_osec_to_segment (output_bfd,
1902 frvfdpic_got_section (info)
1903 ->output_section);
1904 else
1905 got_segment = -1;
1906 if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info))
1907 gprel_segment = _frvfdpic_osec_to_segment (output_bfd,
1908 frvfdpic_gotfixup_section (info)
1909 ->output_section);
1910 else
1911 gprel_segment = -1;
1912 if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created)
1913 plt_segment = _frvfdpic_osec_to_segment (output_bfd,
1914 frvfdpic_plt_section (info)
1915 ->output_section);
1916 else
1917 plt_segment = -1;
1918
1919 for (rel = relocs; rel < relend; rel ++)
1920 {
1921 reloc_howto_type *howto;
1922 unsigned long r_symndx;
1923 Elf_Internal_Sym *sym;
1924 asection *sec;
1925 struct elf_link_hash_entry *h;
1926 bfd_vma relocation;
1927 bfd_reloc_status_type r;
1928 const char * name = NULL;
1929 int r_type;
1930 asection *osec;
1931 struct frvfdpic_relocs_info *picrel;
1932 bfd_vma orig_addend = rel->r_addend;
1933
1934 r_type = ELF32_R_TYPE (rel->r_info);
1935
1936 if ( r_type == R_FRV_GNU_VTINHERIT
1937 || r_type == R_FRV_GNU_VTENTRY)
1938 continue;
1939
1940 /* This is a final link. */
1941 r_symndx = ELF32_R_SYM (rel->r_info);
1942 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info);
1943 h = NULL;
1944 sym = NULL;
1945 sec = NULL;
1946
1947 if (r_symndx < symtab_hdr->sh_info)
1948 {
1949 sym = local_syms + r_symndx;
1950 osec = sec = local_sections [r_symndx];
1951 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1952
1953 name = bfd_elf_string_from_elf_section
1954 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1955 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1956 }
1957 else
1958 {
1959 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
1960
1961 while (h->root.type == bfd_link_hash_indirect
1962 || h->root.type == bfd_link_hash_warning)
1963 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1964
1965 name = h->root.root.string;
1966
1967 if ((h->root.type == bfd_link_hash_defined
1968 || h->root.type == bfd_link_hash_defweak)
1969 && ! FRVFDPIC_SYM_LOCAL (info, h))
1970 {
1971 sec = NULL;
1972 relocation = 0;
1973 }
1974 else
1975 if (h->root.type == bfd_link_hash_defined
1976 || h->root.type == bfd_link_hash_defweak)
1977 {
1978 sec = h->root.u.def.section;
1979 relocation = (h->root.u.def.value
1980 + sec->output_section->vma
1981 + sec->output_offset);
1982 }
1983 else if (h->root.type == bfd_link_hash_undefweak)
1984 {
1985 relocation = 0;
1986 }
1987 else if (info->unresolved_syms_in_objects == RM_IGNORE
1988 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
1989 relocation = 0;
1990 else
1991 {
1992 if (! ((*info->callbacks->undefined_symbol)
1993 (info, h->root.root.string, input_bfd,
1994 input_section, rel->r_offset,
1995 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
1996 || ELF_ST_VISIBILITY (h->other)))))
1997 return FALSE;
1998 relocation = 0;
1999 }
2000 osec = sec;
2001 }
2002
2003 switch (r_type)
2004 {
2005 case R_FRV_LABEL24:
2006 case R_FRV_32:
2007 if (! IS_FDPIC (output_bfd))
2008 goto non_fdpic;
2009
2010 case R_FRV_GOT12:
2011 case R_FRV_GOTHI:
2012 case R_FRV_GOTLO:
2013 case R_FRV_FUNCDESC_GOT12:
2014 case R_FRV_FUNCDESC_GOTHI:
2015 case R_FRV_FUNCDESC_GOTLO:
2016 case R_FRV_GOTOFF12:
2017 case R_FRV_GOTOFFHI:
2018 case R_FRV_GOTOFFLO:
2019 case R_FRV_FUNCDESC_GOTOFF12:
2020 case R_FRV_FUNCDESC_GOTOFFHI:
2021 case R_FRV_FUNCDESC_GOTOFFLO:
2022 case R_FRV_FUNCDESC:
2023 case R_FRV_FUNCDESC_VALUE:
2024 if (h != NULL)
2025 picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info
2026 (info), input_bfd, h,
2027 orig_addend, INSERT);
2028 else
2029 /* In order to find the entry we created before, we must
2030 use the original addend, not the one that may have been
2031 modified by _bfd_elf_rela_local_sym(). */
2032 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info
2033 (info), input_bfd, r_symndx,
2034 orig_addend, INSERT);
2035 if (! picrel)
2036 return FALSE;
2037
2038 if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info,
2039 osec, sym,
2040 rel->r_addend))
2041 {
2042 (*_bfd_error_handler)
2043 (_("%s: relocation at `%s+0x%x' references symbol `%s' with nonzero addend"),
2044 bfd_archive_filename (input_bfd), input_section->name,
2045 rel->r_offset, name);
2046 return FALSE;
2047
2048 }
2049
2050 break;
2051
2052 default:
2053 non_fdpic:
2054 picrel = NULL;
2055 if (h && ! FRVFDPIC_SYM_LOCAL (info, h))
2056 {
2057 info->callbacks->warning
2058 (info, _("relocation references symbol not defined in the module"),
2059 name, input_bfd, input_section, rel->r_offset);
2060 return FALSE;
2061 }
2062 break;
2063 }
2064
2065 switch (r_type)
2066 {
2067 case R_FRV_LABEL24:
2068 check_segment[0] = isec_segment;
2069 if (! IS_FDPIC (output_bfd))
2070 check_segment[1] = isec_segment;
2071 else if (picrel->plt)
2072 {
2073 relocation = frvfdpic_plt_section (info)->output_section->vma
2074 + frvfdpic_plt_section (info)->output_offset
2075 + picrel->plt_entry;
2076 check_segment[1] = plt_segment;
2077 }
2078 /* We don't want to warn on calls to undefined weak symbols,
2079 as calls to them must be protected by non-NULL tests
2080 anyway, and unprotected calls would invoke undefined
2081 behavior. */
2082 else if (picrel->symndx == -1
2083 && picrel->d.h->root.type == bfd_link_hash_undefweak)
2084 check_segment[1] = check_segment[0];
2085 else
2086 check_segment[1] = sec
2087 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
2088 : (unsigned)-1;
2089 break;
2090
2091 case R_FRV_GOT12:
2092 case R_FRV_GOTHI:
2093 case R_FRV_GOTLO:
2094 relocation = picrel->got_entry;
2095 check_segment[0] = check_segment[1] = got_segment;
2096 break;
2097
2098 case R_FRV_FUNCDESC_GOT12:
2099 case R_FRV_FUNCDESC_GOTHI:
2100 case R_FRV_FUNCDESC_GOTLO:
2101 relocation = picrel->fdgot_entry;
2102 check_segment[0] = check_segment[1] = got_segment;
2103 break;
2104
2105 case R_FRV_GOTOFFHI:
2106 case R_FRV_GOTOFF12:
2107 case R_FRV_GOTOFFLO:
2108 relocation -= frvfdpic_got_section (info)->output_section->vma
2109 + frvfdpic_got_section (info)->output_offset
2110 + frvfdpic_got_initial_offset (info);
2111 check_segment[0] = got_segment;
2112 check_segment[1] = sec
2113 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
2114 : (unsigned)-1;
2115 break;
2116
2117 case R_FRV_FUNCDESC_GOTOFF12:
2118 case R_FRV_FUNCDESC_GOTOFFHI:
2119 case R_FRV_FUNCDESC_GOTOFFLO:
2120 relocation = picrel->fd_entry;
2121 check_segment[0] = check_segment[1] = got_segment;
2122 break;
2123
2124 case R_FRV_FUNCDESC:
2125 {
2126 int dynindx;
2127 bfd_vma addend = rel->r_addend;
2128
2129 if (! (h && h->root.type == bfd_link_hash_undefweak
2130 && FRVFDPIC_SYM_LOCAL (info, h)))
2131 {
2132 /* If the symbol is dynamic and there may be dynamic
2133 symbol resolution because we are or are linked with a
2134 shared library, emit a FUNCDESC relocation such that
2135 the dynamic linker will allocate the function
2136 descriptor. If the symbol needs a non-local function
2137 descriptor but binds locally (e.g., its visibility is
2138 protected, emit a dynamic relocation decayed to
2139 section+offset. */
2140 if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)
2141 && FRVFDPIC_SYM_LOCAL (info, h)
2142 && !(info->executable && !info->pie))
2143 {
2144 dynindx = elf_section_data (h->root.u.def.section
2145 ->output_section)->dynindx;
2146 addend += h->root.u.def.section->output_offset
2147 + h->root.u.def.value;
2148 }
2149 else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h))
2150 {
2151 if (addend)
2152 {
2153 info->callbacks->warning
2154 (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"),
2155 name, input_bfd, input_section, rel->r_offset);
2156 return FALSE;
2157 }
2158 dynindx = h->dynindx;
2159 }
2160 else
2161 {
2162 /* Otherwise, we know we have a private function
2163 descriptor, so reference it directly. */
2164 BFD_ASSERT (picrel->privfd);
2165 r_type = R_FRV_32;
2166 dynindx = elf_section_data (frvfdpic_got_section (info)
2167 ->output_section)->dynindx;
2168 addend = frvfdpic_got_section (info)->output_offset
2169 + frvfdpic_got_initial_offset (info)
2170 + picrel->fd_entry;
2171 }
2172
2173 /* If there is room for dynamic symbol resolution, emit
2174 the dynamic relocation. However, if we're linking an
2175 executable at a fixed location, we won't have emitted a
2176 dynamic symbol entry for the got section, so idx will
2177 be zero, which means we can and should compute the
2178 address of the private descriptor ourselves. */
2179 if (info->executable && !info->pie
2180 && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h)))
2181 {
2182 addend += frvfdpic_got_section (info)->output_section->vma;
2183 if ((bfd_get_section_flags (output_bfd,
2184 input_section->output_section)
2185 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2186 {
2187 if (_frvfdpic_osec_readonly_p (output_bfd,
2188 input_section
2189 ->output_section))
2190 {
2191 info->callbacks->warning
2192 (info,
2193 _("cannot emit fixups in read-only section"),
2194 name, input_bfd, input_section, rel->r_offset);
2195 return FALSE;
2196 }
2197 _frvfdpic_add_rofixup (output_bfd,
2198 frvfdpic_gotfixup_section
2199 (info),
2200 _bfd_elf_section_offset
2201 (output_bfd, info,
2202 input_section, rel->r_offset)
2203 + input_section
2204 ->output_section->vma
2205 + input_section->output_offset,
2206 picrel);
2207 }
2208 }
2209 else if ((bfd_get_section_flags (output_bfd,
2210 input_section->output_section)
2211 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2212 {
2213 if (_frvfdpic_osec_readonly_p (output_bfd,
2214 input_section
2215 ->output_section))
2216 {
2217 info->callbacks->warning
2218 (info,
2219 _("cannot emit dynamic relocations in read-only section"),
2220 name, input_bfd, input_section, rel->r_offset);
2221 return FALSE;
2222 }
2223 _frvfdpic_add_dyn_reloc (output_bfd,
2224 frvfdpic_gotrel_section (info),
2225 _bfd_elf_section_offset
2226 (output_bfd, info,
2227 input_section, rel->r_offset)
2228 + input_section
2229 ->output_section->vma
2230 + input_section->output_offset,
2231 r_type, dynindx, addend, picrel);
2232 }
2233 else
2234 addend += frvfdpic_got_section (info)->output_section->vma;
2235 }
2236
2237 /* We want the addend in-place because dynamic
2238 relocations are REL. Setting relocation to it should
2239 arrange for it to be installed. */
2240 relocation = addend - rel->r_addend;
2241 }
2242 check_segment[0] = check_segment[1] = got_segment;
2243 break;
2244
2245 case R_FRV_32:
2246 if (! IS_FDPIC (output_bfd))
2247 {
2248 check_segment[0] = check_segment[1] = -1;
2249 break;
2250 }
2251 /* Fall through. */
2252 case R_FRV_FUNCDESC_VALUE:
2253 {
2254 int dynindx;
2255 bfd_vma addend = rel->r_addend;
2256
2257 /* If the symbol is dynamic but binds locally, use
2258 section+offset. */
2259 if (h && ! FRVFDPIC_SYM_LOCAL (info, h))
2260 {
2261 if (addend && r_type == R_FRV_FUNCDESC_VALUE)
2262 {
2263 info->callbacks->warning
2264 (info, _("R_FRV_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2265 name, input_bfd, input_section, rel->r_offset);
2266 return FALSE;
2267 }
2268 dynindx = h->dynindx;
2269 }
2270 else
2271 {
2272 if (h)
2273 addend += h->root.u.def.value;
2274 else
2275 addend += sym->st_value;
2276 if (osec)
2277 addend += osec->output_offset;
2278 if (osec && osec->output_section
2279 && ! bfd_is_abs_section (osec->output_section)
2280 && ! bfd_is_und_section (osec->output_section))
2281 dynindx = elf_section_data (osec->output_section)->dynindx;
2282 else
2283 dynindx = 0;
2284 }
2285
2286 /* If we're linking an executable at a fixed address, we
2287 can omit the dynamic relocation as long as the symbol
2288 is defined in the current link unit (which is implied
2289 by its output section not being NULL). */
2290 if (info->executable && !info->pie
2291 && (!h || FRVFDPIC_SYM_LOCAL (info, h)))
2292 {
2293 if (osec)
2294 addend += osec->output_section->vma;
2295 if (IS_FDPIC (input_bfd)
2296 && (bfd_get_section_flags (output_bfd,
2297 input_section->output_section)
2298 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2299 {
2300 if (_frvfdpic_osec_readonly_p (output_bfd,
2301 input_section
2302 ->output_section))
2303 {
2304 info->callbacks->warning
2305 (info,
2306 _("cannot emit fixups in read-only section"),
2307 name, input_bfd, input_section, rel->r_offset);
2308 return FALSE;
2309 }
2310 if (!h || h->root.type != bfd_link_hash_undefweak)
2311 {
2312 _frvfdpic_add_rofixup (output_bfd,
2313 frvfdpic_gotfixup_section
2314 (info),
2315 _bfd_elf_section_offset
2316 (output_bfd, info,
2317 input_section, rel->r_offset)
2318 + input_section
2319 ->output_section->vma
2320 + input_section->output_offset,
2321 picrel);
2322 if (r_type == R_FRV_FUNCDESC_VALUE)
2323 _frvfdpic_add_rofixup
2324 (output_bfd,
2325 frvfdpic_gotfixup_section (info),
2326 _bfd_elf_section_offset
2327 (output_bfd, info,
2328 input_section, rel->r_offset)
2329 + input_section->output_section->vma
2330 + input_section->output_offset + 4, picrel);
2331 }
2332 }
2333 }
2334 else
2335 {
2336 if ((bfd_get_section_flags (output_bfd,
2337 input_section->output_section)
2338 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2339 {
2340 if (_frvfdpic_osec_readonly_p (output_bfd,
2341 input_section
2342 ->output_section))
2343 {
2344 info->callbacks->warning
2345 (info,
2346 _("cannot emit dynamic relocations in read-only section"),
2347 name, input_bfd, input_section, rel->r_offset);
2348 return FALSE;
2349 }
2350 _frvfdpic_add_dyn_reloc (output_bfd,
2351 frvfdpic_gotrel_section (info),
2352 _bfd_elf_section_offset
2353 (output_bfd, info,
2354 input_section, rel->r_offset)
2355 + input_section
2356 ->output_section->vma
2357 + input_section->output_offset,
2358 r_type, dynindx, addend, picrel);
2359 }
2360 else if (osec)
2361 addend += osec->output_section->vma;
2362 /* We want the addend in-place because dynamic
2363 relocations are REL. Setting relocation to it
2364 should arrange for it to be installed. */
2365 relocation = addend - rel->r_addend;
2366 }
2367
2368 if (r_type == R_FRV_FUNCDESC_VALUE)
2369 {
2370 /* If we've omitted the dynamic relocation, just emit
2371 the fixed addresses of the symbol and of the local
2372 GOT base offset. */
2373 if (info->executable && !info->pie
2374 && (!h || FRVFDPIC_SYM_LOCAL (info, h)))
2375 bfd_put_32 (output_bfd,
2376 frvfdpic_got_section (info)->output_section->vma
2377 + frvfdpic_got_section (info)->output_offset
2378 + frvfdpic_got_initial_offset (info),
2379 contents + rel->r_offset + 4);
2380 else
2381 /* A function descriptor used for lazy or local
2382 resolving is initialized such that its high word
2383 contains the output section index in which the
2384 PLT entries are located, and the low word
2385 contains the offset of the lazy PLT entry entry
2386 point into that section. */
2387 bfd_put_32 (output_bfd,
2388 h && ! FRVFDPIC_SYM_LOCAL (info, h)
2389 ? 0
2390 : _frvfdpic_osec_to_segment (output_bfd,
2391 sec
2392 ->output_section),
2393 contents + rel->r_offset + 4);
2394 }
2395 }
2396 check_segment[0] = check_segment[1] = got_segment;
2397 break;
2398
2399 case R_FRV_GPREL12:
2400 case R_FRV_GPRELU12:
2401 case R_FRV_GPREL32:
2402 case R_FRV_GPRELHI:
2403 case R_FRV_GPRELLO:
2404 check_segment[0] = gprel_segment;
2405 check_segment[1] = sec
2406 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
2407 : (unsigned)-1;
2408 break;
2409
2410 default:
2411 check_segment[0] = isec_segment;
2412 check_segment[1] = sec
2413 ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section)
2414 : (unsigned)-1;
2415 break;
2416 }
2417
2418 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd))
2419 {
2420 #if 1 /* If you take this out, remove the #error from fdpic-static-6.d
2421 in the ld testsuite. */
2422 /* This helps catch problems in GCC while we can't do more
2423 than static linking. The idea is to test whether the
2424 input file basename is crt0.o only once. */
2425 if (silence_segment_error == 1)
2426 silence_segment_error =
2427 (strlen (input_bfd->filename) == 6
2428 && strcmp (input_bfd->filename, "crt0.o") == 0)
2429 || (strlen (input_bfd->filename) > 6
2430 && strcmp (input_bfd->filename
2431 + strlen (input_bfd->filename) - 7,
2432 "/crt0.o") == 0)
2433 ? -1 : 0;
2434 #endif
2435 if (!silence_segment_error
2436 /* We don't want duplicate errors for undefined
2437 symbols. */
2438 && !(picrel && picrel->symndx == -1
2439 && picrel->d.h->root.type == bfd_link_hash_undefined))
2440 info->callbacks->warning
2441 (info,
2442 (info->shared || info->pie)
2443 ? _("relocations between different segments are not supported")
2444 : _("warning: relocation references a different segment"),
2445 name, input_bfd, input_section, rel->r_offset);
2446 if (!silence_segment_error && (info->shared || info->pie))
2447 return FALSE;
2448 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC;
2449 }
2450
2451 switch (r_type)
2452 {
2453 case R_FRV_GOTOFFHI:
2454 /* We need the addend to be applied before we shift the
2455 value right. */
2456 relocation += rel->r_addend;
2457 /* Fall through. */
2458 case R_FRV_GOTHI:
2459 case R_FRV_FUNCDESC_GOTHI:
2460 case R_FRV_FUNCDESC_GOTOFFHI:
2461 relocation >>= 16;
2462 /* Fall through. */
2463
2464 case R_FRV_GOTLO:
2465 case R_FRV_FUNCDESC_GOTLO:
2466 case R_FRV_GOTOFFLO:
2467 case R_FRV_FUNCDESC_GOTOFFLO:
2468 relocation &= 0xffff;
2469 break;
2470
2471 default:
2472 break;
2473 }
2474
2475 switch (r_type)
2476 {
2477 case R_FRV_LABEL24:
2478 if (! IS_FDPIC (output_bfd) || ! picrel->plt)
2479 break;
2480 /* Fall through. */
2481
2482 /* When referencing a GOT entry, a function descriptor or a
2483 PLT, we don't want the addend to apply to the reference,
2484 but rather to the referenced symbol. The actual entry
2485 will have already been created taking the addend into
2486 account, so cancel it out here. */
2487 case R_FRV_GOT12:
2488 case R_FRV_GOTHI:
2489 case R_FRV_GOTLO:
2490 case R_FRV_FUNCDESC_GOT12:
2491 case R_FRV_FUNCDESC_GOTHI:
2492 case R_FRV_FUNCDESC_GOTLO:
2493 case R_FRV_FUNCDESC_GOTOFF12:
2494 case R_FRV_FUNCDESC_GOTOFFHI:
2495 case R_FRV_FUNCDESC_GOTOFFLO:
2496 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12
2497 here, since we do want to apply the addend to the others.
2498 Note that we've applied the addend to GOTOFFHI before we
2499 shifted it right. */
2500 case R_FRV_GOTOFFHI:
2501 relocation -= rel->r_addend;
2502 break;
2503
2504 default:
2505 break;
2506 }
2507
2508 if (r_type == R_FRV_HI16)
2509 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation);
2510
2511 else if (r_type == R_FRV_LO16)
2512 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation);
2513
2514 else if (r_type == R_FRV_LABEL24)
2515 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel,
2516 contents, relocation);
2517
2518 else if (r_type == R_FRV_GPREL12)
2519 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel,
2520 contents, relocation);
2521
2522 else if (r_type == R_FRV_GPRELU12)
2523 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel,
2524 contents, relocation);
2525
2526 else if (r_type == R_FRV_GPRELLO)
2527 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel,
2528 contents, relocation);
2529
2530 else if (r_type == R_FRV_GPRELHI)
2531 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel,
2532 contents, relocation);
2533
2534 else
2535 r = frv_final_link_relocate (howto, input_bfd, input_section, contents,
2536 rel, relocation);
2537
2538 if (r != bfd_reloc_ok)
2539 {
2540 const char * msg = (const char *) NULL;
2541
2542 switch (r)
2543 {
2544 case bfd_reloc_overflow:
2545 r = info->callbacks->reloc_overflow
2546 (info, name, howto->name, (bfd_vma) 0,
2547 input_bfd, input_section, rel->r_offset);
2548 break;
2549
2550 case bfd_reloc_undefined:
2551 r = info->callbacks->undefined_symbol
2552 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
2553 break;
2554
2555 case bfd_reloc_outofrange:
2556 msg = _("internal error: out of range error");
2557 break;
2558
2559 case bfd_reloc_notsupported:
2560 msg = _("internal error: unsupported relocation error");
2561 break;
2562
2563 case bfd_reloc_dangerous:
2564 msg = _("internal error: dangerous relocation");
2565 break;
2566
2567 default:
2568 msg = _("internal error: unknown error");
2569 break;
2570 }
2571
2572 if (msg)
2573 r = info->callbacks->warning
2574 (info, msg, name, input_bfd, input_section, rel->r_offset);
2575
2576 if (! r)
2577 return FALSE;
2578 }
2579 }
2580
2581 return TRUE;
2582 }
2583 \f
2584 /* Return the section that should be marked against GC for a given
2585 relocation. */
2586
2587 static asection *
2588 elf32_frv_gc_mark_hook (sec, info, rel, h, sym)
2589 asection *sec;
2590 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2591 Elf_Internal_Rela *rel;
2592 struct elf_link_hash_entry *h;
2593 Elf_Internal_Sym *sym;
2594 {
2595 if (h != NULL)
2596 {
2597 switch (ELF32_R_TYPE (rel->r_info))
2598 {
2599 case R_FRV_GNU_VTINHERIT:
2600 case R_FRV_GNU_VTENTRY:
2601 break;
2602
2603 default:
2604 switch (h->root.type)
2605 {
2606 default:
2607 break;
2608
2609 case bfd_link_hash_defined:
2610 case bfd_link_hash_defweak:
2611 return h->root.u.def.section;
2612
2613 case bfd_link_hash_common:
2614 return h->root.u.c.p->section;
2615 }
2616 }
2617 }
2618 else
2619 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
2620
2621 return NULL;
2622 }
2623
2624 /* Update the got entry reference counts for the section being removed. */
2625
2626 static bfd_boolean
2627 elf32_frv_gc_sweep_hook (abfd, info, sec, relocs)
2628 bfd *abfd ATTRIBUTE_UNUSED;
2629 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2630 asection *sec ATTRIBUTE_UNUSED;
2631 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
2632 {
2633 return TRUE;
2634 }
2635
2636 \f
2637 /* Hook called by the linker routine which adds symbols from an object
2638 file. We use it to put .comm items in .scomm, and not .comm. */
2639
2640 static bfd_boolean
2641 elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2642 bfd *abfd;
2643 struct bfd_link_info *info;
2644 Elf_Internal_Sym *sym;
2645 const char **namep ATTRIBUTE_UNUSED;
2646 flagword *flagsp ATTRIBUTE_UNUSED;
2647 asection **secp;
2648 bfd_vma *valp;
2649 {
2650 if (sym->st_shndx == SHN_COMMON
2651 && !info->relocatable
2652 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd))
2653 {
2654 /* Common symbols less than or equal to -G nn bytes are
2655 automatically put into .sbss. */
2656
2657 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
2658
2659 if (scomm == NULL)
2660 {
2661 scomm = bfd_make_section (abfd, ".scommon");
2662 if (scomm == NULL
2663 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
2664 | SEC_IS_COMMON
2665 | SEC_LINKER_CREATED)))
2666 return FALSE;
2667 }
2668
2669 *secp = scomm;
2670 *valp = sym->st_size;
2671 }
2672
2673 return TRUE;
2674 }
2675
2676 /* Create a .got section, as well as its additional info field. This
2677 is almost entirely copied from
2678 elflink.c:_bfd_elf_create_got_section(). */
2679
2680 static bfd_boolean
2681 _frv_create_got_section (bfd *abfd, struct bfd_link_info *info)
2682 {
2683 flagword flags;
2684 asection *s;
2685 struct elf_link_hash_entry *h;
2686 struct bfd_link_hash_entry *bh;
2687 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2688 int ptralign;
2689 int offset;
2690
2691 /* This function may be called more than once. */
2692 s = bfd_get_section_by_name (abfd, ".got");
2693 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
2694 return TRUE;
2695
2696 /* Machine specific: although pointers are 32-bits wide, we want the
2697 GOT to be aligned to a 64-bit boundary, such that function
2698 descriptors in it can be accessed with 64-bit loads and
2699 stores. */
2700 ptralign = 3;
2701
2702 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2703 | SEC_LINKER_CREATED);
2704
2705 s = bfd_make_section (abfd, ".got");
2706 if (s == NULL
2707 || !bfd_set_section_flags (abfd, s, flags)
2708 || !bfd_set_section_alignment (abfd, s, ptralign))
2709 return FALSE;
2710
2711 if (bed->want_got_plt)
2712 {
2713 s = bfd_make_section (abfd, ".got.plt");
2714 if (s == NULL
2715 || !bfd_set_section_flags (abfd, s, flags)
2716 || !bfd_set_section_alignment (abfd, s, ptralign))
2717 return FALSE;
2718 }
2719
2720 if (bed->want_got_sym)
2721 {
2722 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
2723 (or .got.plt) section. We don't do this in the linker script
2724 because we don't want to define the symbol if we are not creating
2725 a global offset table. */
2726 bh = NULL;
2727 if (!(_bfd_generic_link_add_one_symbol
2728 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
2729 bed->got_symbol_offset, (const char *) NULL, FALSE,
2730 bed->collect, &bh)))
2731 return FALSE;
2732 h = (struct elf_link_hash_entry *) bh;
2733 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2734 h->type = STT_OBJECT;
2735
2736 /* Machine-specific: we want the symbol for executables as
2737 well. */
2738 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2739 return FALSE;
2740
2741 elf_hash_table (info)->hgot = h;
2742 }
2743
2744 /* The first bit of the global offset table is the header. */
2745 s->_raw_size += bed->got_header_size + bed->got_symbol_offset;
2746
2747 /* This is the machine-specific part. Create and initialize section
2748 data for the got. */
2749 if (IS_FDPIC (abfd))
2750 {
2751 frvfdpic_got_section (info) = s;
2752 frvfdpic_relocs_info (info) = htab_try_create (1, frvfdpic_relocs_info_hash,
2753 frvfdpic_relocs_info_eq,
2754 (htab_del) NULL);
2755 if (! frvfdpic_relocs_info (info))
2756 return FALSE;
2757
2758 s = bfd_make_section (abfd, ".rel.got");
2759 if (s == NULL
2760 || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY))
2761 || ! bfd_set_section_alignment (abfd, s, 2))
2762 return FALSE;
2763
2764 frvfdpic_gotrel_section (info) = s;
2765
2766 /* Machine-specific. */
2767 s = bfd_make_section (abfd, ".rofixup");
2768 if (s == NULL
2769 || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY))
2770 || ! bfd_set_section_alignment (abfd, s, 2))
2771 return FALSE;
2772
2773 frvfdpic_gotfixup_section (info) = s;
2774 offset = -2048;
2775 flags = BSF_GLOBAL;
2776 }
2777 else
2778 {
2779 offset = 2048;
2780 flags = BSF_GLOBAL | BSF_WEAK;
2781 }
2782
2783 /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it
2784 turns out that we're linking with a different linker script, the
2785 linker script will override it. */
2786 bh = NULL;
2787 if (!(_bfd_generic_link_add_one_symbol
2788 (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE,
2789 bed->collect, &bh)))
2790 return FALSE;
2791 h = (struct elf_link_hash_entry *) bh;
2792 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2793 h->type = STT_OBJECT;
2794
2795 /* Machine-specific: we want the symbol for executables as well. */
2796 if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h))
2797 return FALSE;
2798
2799 return TRUE;
2800 }
2801
2802 /* Make sure the got and plt sections exist, and that our pointers in
2803 the link hash table point to them. */
2804
2805 static bfd_boolean
2806 elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2807 {
2808 /* This is mostly copied from
2809 elflink.c:_bfd_elf_create_dynamic_sections(). */
2810 flagword flags, pltflags;
2811 asection *s;
2812 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2813
2814 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2815 .rel[a].bss sections. */
2816
2817 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2818 | SEC_LINKER_CREATED);
2819
2820 pltflags = flags;
2821 pltflags |= SEC_CODE;
2822 if (bed->plt_not_loaded)
2823 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
2824 if (bed->plt_readonly)
2825 pltflags |= SEC_READONLY;
2826
2827 s = bfd_make_section (abfd, ".plt");
2828 if (s == NULL
2829 || ! bfd_set_section_flags (abfd, s, pltflags)
2830 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2831 return FALSE;
2832 /* FRV-specific: remember it. */
2833 frvfdpic_plt_section (info) = s;
2834
2835 if (bed->want_plt_sym)
2836 {
2837 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2838 .plt section. */
2839 struct elf_link_hash_entry *h;
2840 struct bfd_link_hash_entry *bh = NULL;
2841
2842 if (! (_bfd_generic_link_add_one_symbol
2843 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL,
2844 FALSE, get_elf_backend_data (abfd)->collect, &bh)))
2845 return FALSE;
2846 h = (struct elf_link_hash_entry *) bh;
2847 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2848 h->type = STT_OBJECT;
2849
2850 if (! info->executable
2851 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2852 return FALSE;
2853 }
2854
2855 /* FRV-specific: we want rel relocations for the plt. */
2856 s = bfd_make_section (abfd, ".rel.plt");
2857 if (s == NULL
2858 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2859 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
2860 return FALSE;
2861 /* FRV-specific: remember it. */
2862 frvfdpic_pltrel_section (info) = s;
2863
2864 /* FRV-specific: we want to create the GOT in the FRV way. */
2865 if (! _frv_create_got_section (abfd, info))
2866 return FALSE;
2867
2868 /* FRV-specific: make sure we created everything we wanted. */
2869 BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info)
2870 && frvfdpic_gotfixup_section (info)
2871 && frvfdpic_plt_section (info)
2872 && frvfdpic_pltrel_section (info));
2873
2874 if (bed->want_dynbss)
2875 {
2876 /* The .dynbss section is a place to put symbols which are defined
2877 by dynamic objects, are referenced by regular objects, and are
2878 not functions. We must allocate space for them in the process
2879 image and use a R_*_COPY reloc to tell the dynamic linker to
2880 initialize them at run time. The linker script puts the .dynbss
2881 section into the .bss section of the final image. */
2882 s = bfd_make_section (abfd, ".dynbss");
2883 if (s == NULL
2884 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
2885 return FALSE;
2886
2887 /* The .rel[a].bss section holds copy relocs. This section is not
2888 normally needed. We need to create it here, though, so that the
2889 linker will map it to an output section. We can't just create it
2890 only if we need it, because we will not know whether we need it
2891 until we have seen all the input files, and the first time the
2892 main linker code calls BFD after examining all the input files
2893 (size_dynamic_sections) the input sections have already been
2894 mapped to the output sections. If the section turns out not to
2895 be needed, we can discard it later. We will never need this
2896 section when generating a shared object, since they do not use
2897 copy relocs. */
2898 if (! info->shared)
2899 {
2900 s = bfd_make_section (abfd,
2901 (bed->default_use_rela_p
2902 ? ".rela.bss" : ".rel.bss"));
2903 if (s == NULL
2904 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2905 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
2906 return FALSE;
2907 }
2908 }
2909
2910 return TRUE;
2911 }
2912
2913 /* The name of the dynamic interpreter. This is put in the .interp
2914 section. */
2915
2916 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2917
2918 #define DEFAULT_STACK_SIZE 0x20000
2919
2920 /* This structure is used to collect the number of entries present in
2921 each addressable range of the got. */
2922 struct _frvfdpic_dynamic_got_info
2923 {
2924 /* Several bits of information about the current link. */
2925 struct bfd_link_info *info;
2926 /* Total size needed for GOT entries within the 12-, 16- or 32-bit
2927 ranges. */
2928 bfd_vma got12, gotlos, gothilo;
2929 /* Total size needed for function descriptor entries within the 12-,
2930 16- or 32-bit ranges. */
2931 bfd_vma fd12, fdlos, fdhilo;
2932 /* Total size needed function descriptor entries referenced in PLT
2933 entries, that would be profitable to place in offsets close to
2934 the PIC register. */
2935 bfd_vma fdplt;
2936 /* Total size needed by lazy PLT entries. */
2937 bfd_vma lzplt;
2938 /* Number of relocations carried over from input object files. */
2939 unsigned long relocs;
2940 /* Number of fixups introduced by relocations in input object files. */
2941 unsigned long fixups;
2942 };
2943
2944 /* Compute the total GOT size required by each symbol in each range.
2945 Symbols may require up to 4 words in the GOT: an entry pointing to
2946 the symbol, an entry pointing to its function descriptor, and a
2947 private function descriptors taking two words. */
2948
2949 static int
2950 _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_)
2951 {
2952 struct frvfdpic_relocs_info *entry = *entryp;
2953 struct _frvfdpic_dynamic_got_info *dinfo = dinfo_;
2954 unsigned relocs = 0, fixups = 0;
2955
2956 /* Allocate space for a GOT entry pointing to the symbol. */
2957 if (entry->got12)
2958 dinfo->got12 += 4;
2959 else if (entry->gotlos)
2960 dinfo->gotlos += 4;
2961 else if (entry->gothilo)
2962 dinfo->gothilo += 4;
2963 else
2964 entry->relocs32--;
2965 entry->relocs32++;
2966
2967 /* Allocate space for a GOT entry pointing to the function
2968 descriptor. */
2969 if (entry->fdgot12)
2970 dinfo->got12 += 4;
2971 else if (entry->fdgotlos)
2972 dinfo->gotlos += 4;
2973 else if (entry->fdgothilo)
2974 dinfo->gothilo += 4;
2975 else
2976 entry->relocsfd--;
2977 entry->relocsfd++;
2978
2979 /* Decide whether we need a PLT entry, a function descriptor in the
2980 GOT, and a lazy PLT entry for this symbol. */
2981 entry->plt = entry->call
2982 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
2983 && elf_hash_table (dinfo->info)->dynamic_sections_created;
2984 entry->privfd = entry->plt
2985 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo
2986 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo)
2987 && (entry->symndx != -1
2988 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)));
2989 entry->lazyplt = entry->privfd
2990 && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
2991 && ! (dinfo->info->flags & DF_BIND_NOW)
2992 && elf_hash_table (dinfo->info)->dynamic_sections_created;
2993
2994 /* Allocate space for a function descriptor. */
2995 if (entry->fdgoff12)
2996 dinfo->fd12 += 8;
2997 else if (entry->fdgofflos)
2998 dinfo->fdlos += 8;
2999 else if (entry->privfd && entry->plt)
3000 dinfo->fdplt += 8;
3001 else if (entry->privfd)
3002 dinfo->fdhilo += 8;
3003 else
3004 entry->relocsfdv--;
3005 entry->relocsfdv++;
3006
3007 if (entry->lazyplt)
3008 dinfo->lzplt += 8;
3009
3010 if (!dinfo->info->executable || dinfo->info->pie)
3011 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv;
3012 else
3013 {
3014 if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))
3015 {
3016 if (entry->symndx != -1
3017 || entry->d.h->root.type != bfd_link_hash_undefweak)
3018 fixups += entry->relocs32 + 2 * entry->relocsfdv;
3019 }
3020 else
3021 relocs += entry->relocs32 + entry->relocsfdv;
3022
3023 if (entry->symndx != -1
3024 || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))
3025 {
3026 if (entry->symndx != -1
3027 || entry->d.h->root.type != bfd_link_hash_undefweak)
3028 fixups += entry->relocsfd;
3029 }
3030 else
3031 relocs += entry->relocsfd;
3032 }
3033
3034 entry->dynrelocs += relocs;
3035 entry->fixups += fixups;
3036 dinfo->relocs += relocs;
3037 dinfo->fixups += fixups;
3038
3039 return 1;
3040 }
3041
3042 /* This structure is used to assign offsets to got entries, function
3043 descriptors, plt entries and lazy plt entries. */
3044
3045 struct _frvfdpic_dynamic_got_plt_info
3046 {
3047 /* Summary information collected with _frvfdpic_count_got_plt_entries. */
3048 struct _frvfdpic_dynamic_got_info g;
3049
3050 /* For each addressable range, we record a MAX (positive) and MIN
3051 (negative) value. CUR is used to assign got entries, and it's
3052 incremented from an initial positive value to MAX, then from MIN
3053 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3054 assign function descriptors, and it's decreased from an initial
3055 non-positive value to MIN, then from MAX down to CUR (unless CUR
3056 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3057 to even words. ODD, if non-zero, indicates an odd word to be
3058 used for the next got entry, otherwise CUR is used and
3059 incremented by a pair of words, wrapping around when it reaches
3060 MAX. FDCUR is decremented (and wrapped) before the next function
3061 descriptor is chosen. FDPLT indicates the number of remaining
3062 slots that can be used for function descriptors used only by PLT
3063 entries. */
3064 struct _frvfdpic_dynamic_got_alloc_data
3065 {
3066 bfd_signed_vma max, cur, odd, fdcur, min;
3067 bfd_vma fdplt;
3068 } got12, gotlos, gothilo;
3069 };
3070
3071 /* Determine the positive and negative ranges to be used by each
3072 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3073 double-word boundary, are the minimum (negative) and maximum
3074 (positive) GOT offsets already used by previous ranges, except for
3075 an ODD entry that may have been left behind. GOT and FD indicate
3076 the size of GOT entries and function descriptors that must be
3077 placed within the range from -WRAP to WRAP. If there's room left,
3078 up to FDPLT bytes should be reserved for additional function
3079 descriptors. */
3080
3081 inline static bfd_signed_vma
3082 _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad,
3083 bfd_signed_vma fdcur,
3084 bfd_signed_vma odd,
3085 bfd_signed_vma cur,
3086 bfd_vma got,
3087 bfd_vma fd,
3088 bfd_vma fdplt,
3089 bfd_vma wrap)
3090 {
3091 bfd_signed_vma wrapmin = -wrap;
3092
3093 /* Start at the given initial points. */
3094 gad->fdcur = fdcur;
3095 gad->cur = cur;
3096
3097 /* If we had an incoming odd word and we have any got entries that
3098 are going to use it, consume it, otherwise leave gad->odd at
3099 zero. We might force gad->odd to zero and return the incoming
3100 odd such that it is used by the next range, but then GOT entries
3101 might appear to be out of order and we wouldn't be able to
3102 shorten the GOT by one word if it turns out to end with an
3103 unpaired GOT entry. */
3104 if (odd && got)
3105 {
3106 gad->odd = odd;
3107 got -= 4;
3108 odd = 0;
3109 }
3110 else
3111 gad->odd = 0;
3112
3113 /* If we're left with an unpaired GOT entry, compute its location
3114 such that we can return it. Otherwise, if got doesn't require an
3115 odd number of words here, either odd was already zero in the
3116 block above, or it was set to zero because got was non-zero, or
3117 got was already zero. In the latter case, we want the value of
3118 odd to carry over to the return statement, so we don't want to
3119 reset odd unless the condition below is true. */
3120 if (got & 4)
3121 {
3122 odd = cur + got;
3123 got += 4;
3124 }
3125
3126 /* Compute the tentative boundaries of this range. */
3127 gad->max = cur + got;
3128 gad->min = fdcur - fd;
3129 gad->fdplt = 0;
3130
3131 /* If function descriptors took too much space, wrap some of them
3132 around. */
3133 if (gad->min < wrapmin)
3134 {
3135 gad->max += wrapmin - gad->min;
3136 gad->min = wrapmin;
3137 }
3138 /* If there is space left and we have function descriptors
3139 referenced in PLT entries that could take advantage of shorter
3140 offsets, place them here. */
3141 else if (fdplt && gad->min > wrapmin)
3142 {
3143 bfd_vma fds;
3144 if ((bfd_vma) (gad->min - wrapmin) < fdplt)
3145 fds = gad->min - wrapmin;
3146 else
3147 fds = fdplt;
3148
3149 fdplt -= fds;
3150 gad->min -= fds;
3151 gad->fdplt += fds;
3152 }
3153
3154 /* If GOT entries took too much space, wrap some of them around.
3155 This may well cause gad->min to become lower than wrapmin. This
3156 will cause a relocation overflow later on, so we don't have to
3157 report it here . */
3158 if ((bfd_vma) gad->max > wrap)
3159 {
3160 gad->min -= gad->max - wrap;
3161 gad->max = wrap;
3162 }
3163 /* If there is more space left, try to place some more function
3164 descriptors for PLT entries. */
3165 else if (fdplt && (bfd_vma) gad->max < wrap)
3166 {
3167 bfd_vma fds;
3168 if ((bfd_vma) (wrap - gad->max) < fdplt)
3169 fds = wrap - gad->max;
3170 else
3171 fds = fdplt;
3172
3173 fdplt -= fds;
3174 gad->max += fds;
3175 gad->fdplt += fds;
3176 }
3177
3178 /* If odd was initially computed as an offset past the wrap point,
3179 wrap it around. */
3180 if (odd > gad->max)
3181 odd = gad->min + odd - gad->max;
3182
3183 /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed
3184 before returning, so do it here too. This guarantees that,
3185 should cur and fdcur meet at the wrap point, they'll both be
3186 equal to min. */
3187 if (gad->cur == gad->max)
3188 gad->cur = gad->min;
3189
3190 return odd;
3191 }
3192
3193 /* Compute the location of the next GOT entry, given the allocation
3194 data for a range. */
3195
3196 inline static bfd_signed_vma
3197 _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad)
3198 {
3199 bfd_signed_vma ret;
3200
3201 if (gad->odd)
3202 {
3203 /* If there was an odd word left behind, use it. */
3204 ret = gad->odd;
3205 gad->odd = 0;
3206 }
3207 else
3208 {
3209 /* Otherwise, use the word pointed to by cur, reserve the next
3210 as an odd word, and skip to the next pair of words, possibly
3211 wrapping around. */
3212 ret = gad->cur;
3213 gad->odd = gad->cur + 4;
3214 gad->cur += 8;
3215 if (gad->cur == gad->max)
3216 gad->cur = gad->min;
3217 }
3218
3219 return ret;
3220 }
3221
3222 /* Compute the location of the next function descriptor entry in the
3223 GOT, given the allocation data for a range. */
3224
3225 inline static bfd_signed_vma
3226 _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad)
3227 {
3228 /* If we're at the bottom, wrap around, and only then allocate the
3229 next pair of words. */
3230 if (gad->fdcur == gad->min)
3231 gad->fdcur = gad->max;
3232 return gad->fdcur -= 8;
3233 }
3234
3235 /* Assign GOT offsets for every GOT entry and function descriptor.
3236 Doing everything in a single pass is tricky. */
3237
3238 static int
3239 _frvfdpic_assign_got_entries (void **entryp, void *info_)
3240 {
3241 struct frvfdpic_relocs_info *entry = *entryp;
3242 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_;
3243
3244 if (entry->got12)
3245 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12);
3246 else if (entry->gotlos)
3247 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos);
3248 else if (entry->gothilo)
3249 entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo);
3250
3251 if (entry->fdgot12)
3252 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12);
3253 else if (entry->fdgotlos)
3254 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos);
3255 else if (entry->fdgothilo)
3256 entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo);
3257
3258 if (entry->fdgoff12)
3259 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12);
3260 else if (entry->plt && dinfo->got12.fdplt)
3261 {
3262 dinfo->got12.fdplt -= 8;
3263 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12);
3264 }
3265 else if (entry->fdgofflos)
3266 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos);
3267 else if (entry->plt && dinfo->gotlos.fdplt)
3268 {
3269 dinfo->gotlos.fdplt -= 8;
3270 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos);
3271 }
3272 else if (entry->plt)
3273 {
3274 dinfo->gothilo.fdplt -= 8;
3275 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo);
3276 }
3277 else if (entry->privfd)
3278 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo);
3279
3280 return 1;
3281 }
3282
3283 /* Assign GOT offsets to private function descriptors used by PLT
3284 entries (or referenced by 32-bit offsets), as well as PLT entries
3285 and lazy PLT entries. */
3286
3287 static int
3288 _frvfdpic_assign_plt_entries (void **entryp, void *info_)
3289 {
3290 struct frvfdpic_relocs_info *entry = *entryp;
3291 struct _frvfdpic_dynamic_got_plt_info *dinfo = info_;
3292
3293 /* If this symbol requires a local function descriptor, allocate
3294 one. */
3295 if (entry->privfd && entry->fd_entry == 0)
3296 {
3297 if (dinfo->got12.fdplt)
3298 {
3299 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12);
3300 dinfo->got12.fdplt -= 8;
3301 }
3302 else if (dinfo->gotlos.fdplt)
3303 {
3304 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos);
3305 dinfo->gotlos.fdplt -= 8;
3306 }
3307 else
3308 {
3309 BFD_ASSERT (dinfo->gothilo.fdplt)
3310 entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo);
3311 dinfo->gothilo.fdplt -= 8;
3312 }
3313 }
3314
3315 if (entry->plt)
3316 {
3317 int size;
3318
3319 /* We use the section's raw size to mark the location of the
3320 next PLT entry. */
3321 entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->_raw_size;
3322
3323 /* Figure out the length of this PLT entry based on the
3324 addressing mode we need to reach the function descriptor. */
3325 BFD_ASSERT (entry->fd_entry);
3326 if (entry->fd_entry >= -(1 << (12 - 1))
3327 && entry->fd_entry < (1 << (12 - 1)))
3328 size = 8;
3329 else if (entry->fd_entry >= -(1 << (16 - 1))
3330 && entry->fd_entry < (1 << (16 - 1)))
3331 size = 12;
3332 else
3333 size = 16;
3334
3335 frvfdpic_plt_section (dinfo->g.info)->_raw_size += size;
3336 }
3337
3338 if (entry->lazyplt)
3339 {
3340 entry->lzplt_entry = dinfo->g.lzplt;
3341 dinfo->g.lzplt += 8;
3342 /* If this entry is the one that gets the resolver stub, account
3343 for the additional instruction. */
3344 if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE
3345 == FRVFDPIC_LZPLT_RESOLV_LOC)
3346 dinfo->g.lzplt += 4;
3347 }
3348
3349 return 1;
3350 }
3351
3352 /* Follow indirect and warning hash entries so that each got entry
3353 points to the final symbol definition. P must point to a pointer
3354 to the hash table we're traversing. Since this traversal may
3355 modify the hash table, we set this pointer to NULL to indicate
3356 we've made a potentially-destructive change to the hash table, so
3357 the traversal must be restarted. */
3358 static int
3359 _frvfdpic_resolve_final_relocs_info (void **entryp, void *p)
3360 {
3361 struct frvfdpic_relocs_info *entry = *entryp;
3362 htab_t *htab = p;
3363
3364 if (entry->symndx == -1)
3365 {
3366 struct elf_link_hash_entry *h = entry->d.h;
3367 struct frvfdpic_relocs_info *oentry;
3368
3369 while (h->root.type == bfd_link_hash_indirect
3370 || h->root.type == bfd_link_hash_warning)
3371 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3372
3373 if (entry->d.h == h)
3374 return 1;
3375
3376 oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend,
3377 NO_INSERT);
3378
3379 if (oentry)
3380 {
3381 /* Merge the two entries. */
3382 frvfdpic_pic_merge_early_relocs_info (oentry, entry);
3383 htab_clear_slot (*htab, entryp);
3384 return 1;
3385 }
3386
3387 entry->d.h = h;
3388
3389 /* If we can't find this entry with the new bfd hash, re-insert
3390 it, and get the traversal restarted. */
3391 if (! htab_find (*htab, entry))
3392 {
3393 htab_clear_slot (*htab, entryp);
3394 entryp = htab_find_slot (*htab, entry, INSERT);
3395 if (! *entryp)
3396 *entryp = entry;
3397 /* Abort the traversal, since the whole table may have
3398 moved, and leave it up to the parent to restart the
3399 process. */
3400 *(htab_t *)p = NULL;
3401 return 0;
3402 }
3403 }
3404
3405 return 1;
3406 }
3407
3408 /* Set the sizes of the dynamic sections. */
3409
3410 static bfd_boolean
3411 elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd,
3412 struct bfd_link_info *info)
3413 {
3414 bfd *dynobj;
3415 asection *s;
3416 struct _frvfdpic_dynamic_got_plt_info gpinfo;
3417 bfd_signed_vma odd;
3418 bfd_vma limit;
3419
3420 dynobj = elf_hash_table (info)->dynobj;
3421 BFD_ASSERT (dynobj != NULL);
3422
3423 if (elf_hash_table (info)->dynamic_sections_created)
3424 {
3425 /* Set the contents of the .interp section to the interpreter. */
3426 if (info->executable)
3427 {
3428 s = bfd_get_section_by_name (dynobj, ".interp");
3429 BFD_ASSERT (s != NULL);
3430 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3431 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3432 }
3433 }
3434
3435 memset (&gpinfo, 0, sizeof (gpinfo));
3436 gpinfo.g.info = info;
3437
3438 for (;;)
3439 {
3440 htab_t relocs = frvfdpic_relocs_info (info);
3441
3442 htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs);
3443
3444 if (relocs == frvfdpic_relocs_info (info))
3445 break;
3446 }
3447
3448 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries,
3449 &gpinfo.g);
3450
3451 odd = 12;
3452 /* Compute the total size taken by entries in the 12-bit and 16-bit
3453 ranges, to tell how many PLT function descriptors we can bring
3454 into the 12-bit range without causing the 16-bit range to
3455 overflow. */
3456 limit = odd + gpinfo.g.got12 + gpinfo.g.gotlos
3457 + gpinfo.g.fd12 + gpinfo.g.fdlos;
3458 if (limit < (bfd_vma)1 << 16)
3459 limit = ((bfd_vma)1 << 16) - limit;
3460 else
3461 limit = 0;
3462 if (gpinfo.g.fdplt < limit)
3463 limit = gpinfo.g.fdplt;
3464
3465 /* Determine the ranges of GOT offsets that we can use for each
3466 range of addressing modes. */
3467 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.got12,
3468 0,
3469 odd,
3470 16,
3471 gpinfo.g.got12,
3472 gpinfo.g.fd12,
3473 limit,
3474 (bfd_vma)1 << (12-1));
3475 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.gotlos,
3476 gpinfo.got12.min,
3477 odd,
3478 gpinfo.got12.max,
3479 gpinfo.g.gotlos,
3480 gpinfo.g.fdlos,
3481 gpinfo.g.fdplt - gpinfo.got12.fdplt,
3482 (bfd_vma)1 << (16-1));
3483 odd = _frvfdpic_compute_got_alloc_data (&gpinfo.gothilo,
3484 gpinfo.gotlos.min,
3485 odd,
3486 gpinfo.gotlos.max,
3487 gpinfo.g.gothilo,
3488 gpinfo.g.fdhilo,
3489 gpinfo.g.fdplt - gpinfo.got12.fdplt
3490 - gpinfo.gotlos.fdplt,
3491 (bfd_vma)1 << (32-1));
3492
3493 /* Now assign (most) GOT offsets. */
3494 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries,
3495 &gpinfo);
3496
3497 frvfdpic_got_section (info)->_raw_size = gpinfo.gothilo.max
3498 - gpinfo.gothilo.min
3499 /* If an odd word is the last word of the GOT, we don't need this
3500 word to be part of the GOT. */
3501 - (odd + 4 == gpinfo.gothilo.max ? 4 : 0);
3502 if (frvfdpic_got_section (info)->_raw_size == 0)
3503 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE;
3504 else if (frvfdpic_got_section (info)->_raw_size == 12
3505 && ! elf_hash_table (info)->dynamic_sections_created)
3506 {
3507 frvfdpic_got_section (info)->flags |= SEC_EXCLUDE;
3508 frvfdpic_got_section (info)->_raw_size = 0;
3509 }
3510 else
3511 {
3512 frvfdpic_got_section (info)->contents =
3513 (bfd_byte *) bfd_zalloc (dynobj,
3514 frvfdpic_got_section (info)->_raw_size);
3515 if (frvfdpic_got_section (info)->contents == NULL)
3516 return FALSE;
3517 }
3518
3519 if (elf_hash_table (info)->dynamic_sections_created)
3520 /* Subtract the number of lzplt entries, since those will generate
3521 relocations in the pltrel section. */
3522 frvfdpic_gotrel_section (info)->_raw_size =
3523 (gpinfo.g.relocs - gpinfo.g.lzplt / 8)
3524 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
3525 else
3526 BFD_ASSERT (gpinfo.g.relocs == 0);
3527 if (frvfdpic_gotrel_section (info)->_raw_size == 0)
3528 frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE;
3529 else
3530 {
3531 frvfdpic_gotrel_section (info)->contents =
3532 (bfd_byte *) bfd_zalloc (dynobj,
3533 frvfdpic_gotrel_section (info)->_raw_size);
3534 if (frvfdpic_gotrel_section (info)->contents == NULL)
3535 return FALSE;
3536 }
3537
3538 frvfdpic_gotfixup_section (info)->_raw_size = (gpinfo.g.fixups + 1) * 4;
3539 if (frvfdpic_gotfixup_section (info)->_raw_size == 0)
3540 frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE;
3541 else
3542 {
3543 frvfdpic_gotfixup_section (info)->contents =
3544 (bfd_byte *) bfd_zalloc (dynobj,
3545 frvfdpic_gotfixup_section (info)->_raw_size);
3546 if (frvfdpic_gotfixup_section (info)->contents == NULL)
3547 return FALSE;
3548 }
3549
3550 if (elf_hash_table (info)->dynamic_sections_created)
3551 {
3552 frvfdpic_pltrel_section (info)->_raw_size =
3553 gpinfo.g.lzplt / 8 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
3554 if (frvfdpic_pltrel_section (info)->_raw_size == 0)
3555 frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE;
3556 else
3557 {
3558 frvfdpic_pltrel_section (info)->contents =
3559 (bfd_byte *) bfd_zalloc (dynobj,
3560 frvfdpic_pltrel_section (info)
3561 ->_raw_size);
3562 if (frvfdpic_pltrel_section (info)->contents == NULL)
3563 return FALSE;
3564 }
3565 }
3566
3567 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
3568 such that there's room for the additional instruction needed to
3569 call the resolver. Since _frvfdpic_assign_got_entries didn't
3570 account for them, our block size is 4 bytes smaller than the real
3571 block size. */
3572 if (elf_hash_table (info)->dynamic_sections_created)
3573 {
3574 frvfdpic_plt_section (info)->_raw_size = gpinfo.g.lzplt
3575 + ((gpinfo.g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8)
3576 / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4);
3577 }
3578
3579 /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to
3580 actually assign lazy PLT entries addresses. */
3581 gpinfo.g.lzplt = 0;
3582
3583 /* Save information that we're going to need to generate GOT and PLT
3584 entries. */
3585 frvfdpic_got_initial_offset (info) = -gpinfo.gothilo.min;
3586
3587 if (get_elf_backend_data (output_bfd)->want_got_sym)
3588 elf_hash_table (info)->hgot->root.u.def.value
3589 += frvfdpic_got_initial_offset (info);
3590
3591 if (elf_hash_table (info)->dynamic_sections_created)
3592 frvfdpic_plt_initial_offset (info) =
3593 frvfdpic_plt_section (info)->_raw_size;
3594
3595 htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries,
3596 &gpinfo);
3597
3598 /* Allocate the PLT section contents only after
3599 _frvfdpic_assign_plt_entries has a chance to add the size of the
3600 non-lazy PLT entries. */
3601 if (elf_hash_table (info)->dynamic_sections_created)
3602 {
3603 if (frvfdpic_plt_section (info)->_raw_size == 0)
3604 frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE;
3605 else
3606 {
3607 frvfdpic_plt_section (info)->contents =
3608 (bfd_byte *) bfd_zalloc (dynobj,
3609 frvfdpic_plt_section (info)->_raw_size);
3610 if (frvfdpic_plt_section (info)->contents == NULL)
3611 return FALSE;
3612 }
3613 }
3614
3615 if (elf_hash_table (info)->dynamic_sections_created)
3616 {
3617 if (frvfdpic_got_section (info)->_raw_size)
3618 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0))
3619 return FALSE;
3620
3621 if (frvfdpic_pltrel_section (info)->_raw_size)
3622 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
3623 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL)
3624 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
3625 return FALSE;
3626
3627 if (frvfdpic_gotrel_section (info)->_raw_size)
3628 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0)
3629 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0)
3630 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT,
3631 sizeof (Elf32_External_Rel)))
3632 return FALSE;
3633 }
3634
3635 return TRUE;
3636 }
3637
3638 static bfd_boolean
3639 elf32_frvfdpic_always_size_sections (bfd *output_bfd,
3640 struct bfd_link_info *info)
3641 {
3642 if (!info->relocatable)
3643 {
3644 struct elf_link_hash_entry *h;
3645 asection *sec;
3646
3647 /* Force a PT_GNU_STACK segment to be created. */
3648 if (! elf_tdata (output_bfd)->stack_flags)
3649 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
3650
3651 /* Define __stacksize if it's not defined yet. */
3652 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3653 FALSE, FALSE, FALSE);
3654 if (! h || h->root.type != bfd_link_hash_defined
3655 || h->type != STT_OBJECT
3656 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3657 {
3658 struct bfd_link_hash_entry *bh = NULL;
3659
3660 if (!(_bfd_generic_link_add_one_symbol
3661 (info, output_bfd, "__stacksize",
3662 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE,
3663 (const char *) NULL, FALSE,
3664 get_elf_backend_data (output_bfd)->collect, &bh)))
3665 return FALSE;
3666
3667 h = (struct elf_link_hash_entry *) bh;
3668 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3669 h->type = STT_OBJECT;
3670 }
3671
3672 /* Create a stack section, and set its alignment. */
3673 sec = bfd_make_section (output_bfd, ".stack");
3674
3675 if (sec == NULL
3676 || ! bfd_set_section_alignment (output_bfd, sec, 3))
3677 return FALSE;
3678 }
3679
3680 return TRUE;
3681 }
3682
3683 static bfd_boolean
3684 elf32_frvfdpic_modify_segment_map (bfd *output_bfd,
3685 struct bfd_link_info *info)
3686 {
3687 struct elf_segment_map *m;
3688
3689 for (m = elf_tdata (output_bfd)->segment_map; m != NULL; m = m->next)
3690 if (m->p_type == PT_GNU_STACK)
3691 break;
3692
3693 if (m)
3694 {
3695 asection *sec = bfd_get_section_by_name (output_bfd, ".stack");
3696 struct elf_link_hash_entry *h;
3697
3698 if (sec)
3699 {
3700 /* Obtain the pointer to the __stacksize symbol. */
3701 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3702 FALSE, FALSE, FALSE);
3703 while (h->root.type == bfd_link_hash_indirect
3704 || h->root.type == bfd_link_hash_warning)
3705 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3706 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
3707
3708 /* Set the section size from the symbol value. We
3709 intentionally ignore the symbol section. */
3710 if (h->root.type == bfd_link_hash_defined)
3711 sec->_raw_size = h->root.u.def.value;
3712 else
3713 sec->_raw_size = DEFAULT_STACK_SIZE;
3714
3715 /* Add the stack section to the PT_GNU_STACK segment,
3716 such that its size and alignment requirements make it
3717 to the segment. */
3718 m->sections[m->count] = sec;
3719 m->count++;
3720 }
3721 }
3722
3723 return TRUE;
3724 }
3725
3726 /* Fill in code and data in dynamic sections. */
3727
3728 static bfd_boolean
3729 elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3730 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3731 {
3732 /* Nothing to be done for non-FDPIC. */
3733 return TRUE;
3734 }
3735
3736 static bfd_boolean
3737 elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd,
3738 struct bfd_link_info *info)
3739 {
3740 bfd *dynobj;
3741 asection *sdyn;
3742
3743 dynobj = elf_hash_table (info)->dynobj;
3744
3745 if (frvfdpic_got_section (info))
3746 {
3747 BFD_ASSERT (frvfdpic_gotrel_section (info)->_raw_size
3748 == (frvfdpic_gotrel_section (info)->reloc_count
3749 * sizeof (Elf32_External_Rel)));
3750
3751 if (frvfdpic_gotfixup_section (info))
3752 {
3753 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
3754 bfd_vma got_value = hgot->root.u.def.value
3755 + hgot->root.u.def.section->output_section->vma
3756 + hgot->root.u.def.section->output_offset;
3757
3758 _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info),
3759 got_value, 0);
3760
3761 if (frvfdpic_gotfixup_section (info)->_raw_size
3762 != (frvfdpic_gotfixup_section (info)->reloc_count * 4))
3763 {
3764 (*_bfd_error_handler)
3765 ("LINKER BUG: .rofixup section size mismatch");
3766 return FALSE;
3767 }
3768 }
3769 }
3770 if (elf_hash_table (info)->dynamic_sections_created)
3771 {
3772 BFD_ASSERT (frvfdpic_pltrel_section (info)->_raw_size
3773 == (frvfdpic_pltrel_section (info)->reloc_count
3774 * sizeof (Elf32_External_Rel)));
3775 }
3776
3777 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3778
3779 if (elf_hash_table (info)->dynamic_sections_created)
3780 {
3781 Elf32_External_Dyn * dyncon;
3782 Elf32_External_Dyn * dynconend;
3783
3784 BFD_ASSERT (sdyn != NULL);
3785
3786 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3787 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3788
3789 for (; dyncon < dynconend; dyncon++)
3790 {
3791 Elf_Internal_Dyn dyn;
3792
3793 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3794
3795 switch (dyn.d_tag)
3796 {
3797 default:
3798 break;
3799
3800 case DT_PLTGOT:
3801 dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma
3802 + frvfdpic_got_section (info)->output_offset
3803 + frvfdpic_got_initial_offset (info);
3804 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3805 break;
3806
3807 case DT_JMPREL:
3808 dyn.d_un.d_ptr = frvfdpic_pltrel_section (info)
3809 ->output_section->vma
3810 + frvfdpic_pltrel_section (info)->output_offset;
3811 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3812 break;
3813
3814 case DT_PLTRELSZ:
3815 if (frvfdpic_pltrel_section (info)->_cooked_size != 0)
3816 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->_cooked_size;
3817 else
3818 dyn.d_un.d_val = frvfdpic_pltrel_section (info)->_raw_size;
3819 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3820 break;
3821 }
3822 }
3823 }
3824
3825 return TRUE;
3826 }
3827
3828 /* Adjust a symbol defined by a dynamic object and referenced by a
3829 regular object. */
3830
3831 static bfd_boolean
3832 elf32_frvfdpic_adjust_dynamic_symbol
3833 (struct bfd_link_info *info ATTRIBUTE_UNUSED,
3834 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
3835 {
3836 bfd * dynobj;
3837
3838 dynobj = elf_hash_table (info)->dynobj;
3839
3840 /* Make sure we know what is going on here. */
3841 BFD_ASSERT (dynobj != NULL
3842 && (h->weakdef != NULL
3843 || ((h->elf_link_hash_flags
3844 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3845 && (h->elf_link_hash_flags
3846 & ELF_LINK_HASH_REF_REGULAR) != 0
3847 && (h->elf_link_hash_flags
3848 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
3849
3850 /* If this is a weak symbol, and there is a real definition, the
3851 processor independent code will have arranged for us to see the
3852 real definition first, and we can just use the same value. */
3853 if (h->weakdef != NULL)
3854 {
3855 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
3856 || h->weakdef->root.type == bfd_link_hash_defweak);
3857 h->root.u.def.section = h->weakdef->root.u.def.section;
3858 h->root.u.def.value = h->weakdef->root.u.def.value;
3859 }
3860
3861 return TRUE;
3862 }
3863
3864 /* Perform any actions needed for dynamic symbols. */
3865
3866 static bfd_boolean
3867 elf32_frvfdpic_finish_dynamic_symbol
3868 (bfd *output_bfd ATTRIBUTE_UNUSED,
3869 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3870 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED,
3871 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
3872 {
3873 return TRUE;
3874 }
3875
3876 /* Decide whether to attempt to turn absptr or lsda encodings in
3877 shared libraries into pcrel within the given input section. */
3878
3879 static bfd_boolean
3880 frvfdpic_elf_use_relative_eh_frame
3881 (bfd *input_bfd ATTRIBUTE_UNUSED,
3882 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3883 asection *eh_frame_section ATTRIBUTE_UNUSED)
3884 {
3885 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
3886 return FALSE;
3887 }
3888
3889 /* Adjust the contents of an eh_frame_hdr section before they're output. */
3890
3891 static bfd_byte
3892 frvfdpic_elf_encode_eh_address (bfd *abfd,
3893 struct bfd_link_info *info,
3894 asection *osec, bfd_vma offset,
3895 asection *loc_sec, bfd_vma loc_offset,
3896 bfd_vma *encoded)
3897 {
3898 struct elf_link_hash_entry *h;
3899
3900 h = elf_hash_table (info)->hgot;
3901 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
3902
3903 if (! h || (_frvfdpic_osec_to_segment (abfd, osec)
3904 == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section)))
3905 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
3906 loc_sec, loc_offset, encoded);
3907
3908 BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec)
3909 == (_frvfdpic_osec_to_segment
3910 (abfd, h->root.u.def.section->output_section)));
3911
3912 *encoded = osec->vma + offset
3913 - (h->root.u.def.value
3914 + h->root.u.def.section->output_section->vma
3915 + h->root.u.def.section->output_offset);
3916
3917 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
3918 }
3919
3920 /* Look through the relocs for a section during the first phase.
3921
3922 Besides handling virtual table relocs for gc, we have to deal with
3923 all sorts of PIC-related relocations. We describe below the
3924 general plan on how to handle such relocations, even though we only
3925 collect information at this point, storing them in hash tables for
3926 perusal of later passes.
3927
3928 32 relocations are propagated to the linker output when creating
3929 position-independent output. LO16 and HI16 relocations are not
3930 supposed to be encountered in this case.
3931
3932 LABEL16 should always be resolvable by the linker, since it's only
3933 used by branches.
3934
3935 LABEL24, on the other hand, is used by calls. If it turns out that
3936 the target of a call is a dynamic symbol, a PLT entry must be
3937 created for it, which triggers the creation of a private function
3938 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
3939
3940 GPREL relocations require the referenced symbol to be in the same
3941 segment as _gp, but this can only be checked later.
3942
3943 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
3944 exist. LABEL24 might as well, since it may require a PLT entry,
3945 that will require a got.
3946
3947 Non-FUNCDESC GOT relocations require a GOT entry to be created
3948 regardless of whether the symbol is dynamic. However, since a
3949 global symbol that turns out to not be exported may have the same
3950 address of a non-dynamic symbol, we don't assign GOT entries at
3951 this point, such that we can share them in this case. A relocation
3952 for the GOT entry always has to be created, be it to offset a
3953 private symbol by the section load address, be it to get the symbol
3954 resolved dynamically.
3955
3956 FUNCDESC GOT relocations require a GOT entry to be created, and
3957 handled as if a FUNCDESC relocation was applied to the GOT entry in
3958 an object file.
3959
3960 FUNCDESC relocations referencing a symbol that turns out to NOT be
3961 dynamic cause a private function descriptor to be created. The
3962 FUNCDESC relocation then decays to a 32 relocation that points at
3963 the private descriptor. If the symbol is dynamic, the FUNCDESC
3964 relocation is propagated to the linker output, such that the
3965 dynamic linker creates the canonical descriptor, pointing to the
3966 dynamically-resolved definition of the function.
3967
3968 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
3969 symbols that are assigned to the same segment as the GOT, but we
3970 can only check this later, after we know the complete set of
3971 symbols defined and/or exported.
3972
3973 FUNCDESC GOTOFF relocations require a function descriptor to be
3974 created and, unless lazy binding is disabled or the symbol is not
3975 dynamic, a lazy PLT entry. Since we can't tell at this point
3976 whether a symbol is going to be dynamic, we have to decide later
3977 whether to create a lazy PLT entry or bind the descriptor directly
3978 to the private function.
3979
3980 FUNCDESC_VALUE relocations are not supposed to be present in object
3981 files, but they may very well be simply propagated to the linker
3982 output, since they have no side effect.
3983
3984
3985 A function descriptor always requires a FUNCDESC_VALUE relocation.
3986 Whether it's in .plt.rel or not depends on whether lazy binding is
3987 enabled and on whether the referenced symbol is dynamic.
3988
3989 The existence of a lazy PLT requires the resolverStub lazy PLT
3990 entry to be present.
3991
3992
3993 As for assignment of GOT, PLT and lazy PLT entries, and private
3994 descriptors, we might do them all sequentially, but we can do
3995 better than that. For example, we can place GOT entries and
3996 private function descriptors referenced using 12-bit operands
3997 closer to the PIC register value, such that these relocations don't
3998 overflow. Those that are only referenced with LO16 relocations
3999 could come next, but we may as well place PLT-required function
4000 descriptors in the 12-bit range to make them shorter. Symbols
4001 referenced with LO16/HI16 may come next, but we may place
4002 additional function descriptors in the 16-bit range if we can
4003 reliably tell that we've already placed entries that are ever
4004 referenced with only LO16. PLT entries are therefore generated as
4005 small as possible, while not introducing relocation overflows in
4006 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4007 generated before or after PLT entries, but not intermingled with
4008 them, such that we can have more lazy PLT entries in range for a
4009 branch to the resolverStub. The resolverStub should be emitted at
4010 the most distant location from the first lazy PLT entry such that
4011 it's still in range for a branch, or closer, if there isn't a need
4012 for so many lazy PLT entries. Additional lazy PLT entries may be
4013 emitted after the resolverStub, as long as branches are still in
4014 range. If the branch goes out of range, longer lazy PLT entries
4015 are emitted.
4016
4017 We could further optimize PLT and lazy PLT entries by giving them
4018 priority in assignment to closer-to-gr17 locations depending on the
4019 number of occurrences of references to them (assuming a function
4020 that's called more often is more important for performance, so its
4021 PLT entry should be faster), or taking hints from the compiler.
4022 Given infinite time and money... :-) */
4023
4024 static bfd_boolean
4025 elf32_frv_check_relocs (abfd, info, sec, relocs)
4026 bfd *abfd;
4027 struct bfd_link_info *info;
4028 asection *sec;
4029 const Elf_Internal_Rela *relocs;
4030 {
4031 Elf_Internal_Shdr *symtab_hdr;
4032 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4033 const Elf_Internal_Rela *rel;
4034 const Elf_Internal_Rela *rel_end;
4035 bfd *dynobj;
4036 struct frvfdpic_relocs_info *picrel;
4037
4038 if (info->relocatable)
4039 return TRUE;
4040
4041 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4042 sym_hashes = elf_sym_hashes (abfd);
4043 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
4044 if (!elf_bad_symtab (abfd))
4045 sym_hashes_end -= symtab_hdr->sh_info;
4046
4047 dynobj = elf_hash_table (info)->dynobj;
4048 rel_end = relocs + sec->reloc_count;
4049 for (rel = relocs; rel < rel_end; rel++)
4050 {
4051 struct elf_link_hash_entry *h;
4052 unsigned long r_symndx;
4053
4054 r_symndx = ELF32_R_SYM (rel->r_info);
4055 if (r_symndx < symtab_hdr->sh_info)
4056 h = NULL;
4057 else
4058 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4059
4060 switch (ELF32_R_TYPE (rel->r_info))
4061 {
4062 case R_FRV_GOT12:
4063 case R_FRV_GOTHI:
4064 case R_FRV_GOTLO:
4065 case R_FRV_FUNCDESC_GOT12:
4066 case R_FRV_FUNCDESC_GOTHI:
4067 case R_FRV_FUNCDESC_GOTLO:
4068 case R_FRV_GOTOFF12:
4069 case R_FRV_GOTOFFHI:
4070 case R_FRV_GOTOFFLO:
4071 case R_FRV_FUNCDESC_GOTOFF12:
4072 case R_FRV_FUNCDESC_GOTOFFHI:
4073 case R_FRV_FUNCDESC_GOTOFFLO:
4074 case R_FRV_FUNCDESC:
4075 case R_FRV_FUNCDESC_VALUE:
4076 if (! IS_FDPIC (abfd))
4077 goto bad_reloc;
4078 /* Fall through. */
4079 case R_FRV_GPREL12:
4080 case R_FRV_GPRELU12:
4081 case R_FRV_GPRELHI:
4082 case R_FRV_GPRELLO:
4083 case R_FRV_LABEL24:
4084 case R_FRV_32:
4085 if (! dynobj)
4086 {
4087 elf_hash_table (info)->dynobj = dynobj = abfd;
4088 if (! _frv_create_got_section (abfd, info))
4089 return FALSE;
4090 }
4091 if (! IS_FDPIC (abfd))
4092 {
4093 picrel = NULL;
4094 break;
4095 }
4096 if (h != NULL)
4097 {
4098 if (h->dynindx == -1)
4099 switch (ELF_ST_VISIBILITY (h->other))
4100 {
4101 case STV_INTERNAL:
4102 case STV_HIDDEN:
4103 break;
4104 default:
4105 bfd_elf_link_record_dynamic_symbol (info, h);
4106 break;
4107 }
4108 picrel
4109 = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info),
4110 abfd, h,
4111 rel->r_addend, INSERT);
4112 }
4113 else
4114 picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info
4115 (info), abfd, r_symndx,
4116 rel->r_addend, INSERT);
4117 if (! picrel)
4118 return FALSE;
4119 break;
4120
4121 default:
4122 picrel = NULL;
4123 break;
4124 }
4125
4126 switch (ELF32_R_TYPE (rel->r_info))
4127 {
4128 case R_FRV_LABEL24:
4129 if (IS_FDPIC (abfd))
4130 picrel->call = 1;
4131 break;
4132
4133 case R_FRV_FUNCDESC_VALUE:
4134 picrel->relocsfdv++;
4135 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4136 picrel->relocs32--;
4137 /* Fall through. */
4138
4139 case R_FRV_32:
4140 if (! IS_FDPIC (abfd))
4141 break;
4142
4143 picrel->sym = 1;
4144 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4145 picrel->relocs32++;
4146 break;
4147
4148 case R_FRV_GOT12:
4149 picrel->got12 = 1;
4150 break;
4151
4152 case R_FRV_GOTHI:
4153 case R_FRV_GOTLO:
4154 picrel->gothilo = 1;
4155 break;
4156
4157 case R_FRV_FUNCDESC_GOT12:
4158 picrel->fdgot12 = 1;
4159 break;
4160
4161 case R_FRV_FUNCDESC_GOTHI:
4162 case R_FRV_FUNCDESC_GOTLO:
4163 picrel->fdgothilo = 1;
4164 break;
4165
4166 case R_FRV_GOTOFF12:
4167 case R_FRV_GOTOFFHI:
4168 case R_FRV_GOTOFFLO:
4169 picrel->gotoff = 1;
4170 break;
4171
4172 case R_FRV_FUNCDESC_GOTOFF12:
4173 picrel->fdgoff12 = 1;
4174 break;
4175
4176 case R_FRV_FUNCDESC_GOTOFFHI:
4177 case R_FRV_FUNCDESC_GOTOFFLO:
4178 picrel->fdgoffhilo = 1;
4179 break;
4180
4181 case R_FRV_FUNCDESC:
4182 picrel->fd = 1;
4183 picrel->relocsfd++;
4184 break;
4185
4186 /* This relocation describes the C++ object vtable hierarchy.
4187 Reconstruct it for later use during GC. */
4188 case R_FRV_GNU_VTINHERIT:
4189 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4190 return FALSE;
4191 break;
4192
4193 /* This relocation describes which C++ vtable entries are actually
4194 used. Record for later use during GC. */
4195 case R_FRV_GNU_VTENTRY:
4196 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4197 return FALSE;
4198 break;
4199
4200 case R_FRV_LABEL16:
4201 case R_FRV_LO16:
4202 case R_FRV_HI16:
4203 case R_FRV_GPREL12:
4204 case R_FRV_GPRELU12:
4205 case R_FRV_GPREL32:
4206 case R_FRV_GPRELHI:
4207 case R_FRV_GPRELLO:
4208 break;
4209
4210 default:
4211 bad_reloc:
4212 (*_bfd_error_handler)
4213 (_("%s: unsupported relocation type %i"),
4214 bfd_archive_filename (abfd), ELF32_R_TYPE (rel->r_info));
4215 return FALSE;
4216 }
4217 }
4218
4219 return TRUE;
4220 }
4221
4222 \f
4223 /* Return the machine subcode from the ELF e_flags header. */
4224
4225 static int
4226 elf32_frv_machine (abfd)
4227 bfd *abfd;
4228 {
4229 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK)
4230 {
4231 default: break;
4232 case EF_FRV_CPU_FR550: return bfd_mach_fr550;
4233 case EF_FRV_CPU_FR500: return bfd_mach_fr500;
4234 case EF_FRV_CPU_FR450: return bfd_mach_fr450;
4235 case EF_FRV_CPU_FR405: return bfd_mach_fr400;
4236 case EF_FRV_CPU_FR400: return bfd_mach_fr400;
4237 case EF_FRV_CPU_FR300: return bfd_mach_fr300;
4238 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple;
4239 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat;
4240 }
4241
4242 return bfd_mach_frv;
4243 }
4244
4245 /* Set the right machine number for a FRV ELF file. */
4246
4247 static bfd_boolean
4248 elf32_frv_object_p (abfd)
4249 bfd *abfd;
4250 {
4251 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd));
4252 return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0)
4253 == (IS_FDPIC (abfd)));
4254 }
4255 \f
4256 /* Function to set the ELF flag bits. */
4257
4258 static bfd_boolean
4259 frv_elf_set_private_flags (abfd, flags)
4260 bfd *abfd;
4261 flagword flags;
4262 {
4263 elf_elfheader (abfd)->e_flags = flags;
4264 elf_flags_init (abfd) = TRUE;
4265 return TRUE;
4266 }
4267
4268 /* Copy backend specific data from one object module to another. */
4269
4270 static bfd_boolean
4271 frv_elf_copy_private_bfd_data (ibfd, obfd)
4272 bfd *ibfd;
4273 bfd *obfd;
4274 {
4275 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4276 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4277 return TRUE;
4278
4279 BFD_ASSERT (!elf_flags_init (obfd)
4280 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
4281
4282 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
4283 elf_flags_init (obfd) = TRUE;
4284 return TRUE;
4285 }
4286
4287 /* Return true if the architecture described by elf header flag
4288 EXTENSION is an extension of the architecture described by BASE. */
4289
4290 static bfd_boolean
4291 frv_elf_arch_extension_p (flagword base, flagword extension)
4292 {
4293 if (base == extension)
4294 return TRUE;
4295
4296 /* CPU_GENERIC code can be merged with code for a specific
4297 architecture, in which case the result is marked as being
4298 for the specific architecture. Everything is therefore
4299 an extension of CPU_GENERIC. */
4300 if (base == EF_FRV_CPU_GENERIC)
4301 return TRUE;
4302
4303 if (extension == EF_FRV_CPU_FR450)
4304 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405)
4305 return TRUE;
4306
4307 if (extension == EF_FRV_CPU_FR405)
4308 if (base == EF_FRV_CPU_FR400)
4309 return TRUE;
4310
4311 return FALSE;
4312 }
4313
4314 /* Merge backend specific data from an object file to the output
4315 object file when linking. */
4316
4317 static bfd_boolean
4318 frv_elf_merge_private_bfd_data (ibfd, obfd)
4319 bfd *ibfd;
4320 bfd *obfd;
4321 {
4322 flagword old_flags, old_partial;
4323 flagword new_flags, new_partial;
4324 bfd_boolean error = FALSE;
4325 char new_opt[80];
4326 char old_opt[80];
4327
4328 new_opt[0] = old_opt[0] = '\0';
4329 new_flags = elf_elfheader (ibfd)->e_flags;
4330 old_flags = elf_elfheader (obfd)->e_flags;
4331
4332 if (new_flags & EF_FRV_FDPIC)
4333 new_flags &= ~EF_FRV_PIC;
4334
4335 #ifdef DEBUG
4336 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
4337 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
4338 bfd_get_filename (ibfd));
4339 #endif
4340
4341 if (!elf_flags_init (obfd)) /* First call, no flags set. */
4342 {
4343 elf_flags_init (obfd) = TRUE;
4344 old_flags = new_flags;
4345 }
4346
4347 else if (new_flags == old_flags) /* Compatible flags are ok. */
4348 ;
4349
4350 else /* Possibly incompatible flags. */
4351 {
4352 /* Warn if different # of gprs are used. Note, 0 means nothing is
4353 said about the size of gprs. */
4354 new_partial = (new_flags & EF_FRV_GPR_MASK);
4355 old_partial = (old_flags & EF_FRV_GPR_MASK);
4356 if (new_partial == old_partial)
4357 ;
4358
4359 else if (new_partial == 0)
4360 ;
4361
4362 else if (old_partial == 0)
4363 old_flags |= new_partial;
4364
4365 else
4366 {
4367 switch (new_partial)
4368 {
4369 default: strcat (new_opt, " -mgpr-??"); break;
4370 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break;
4371 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break;
4372 }
4373
4374 switch (old_partial)
4375 {
4376 default: strcat (old_opt, " -mgpr-??"); break;
4377 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break;
4378 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break;
4379 }
4380 }
4381
4382 /* Warn if different # of fprs are used. Note, 0 means nothing is
4383 said about the size of fprs. */
4384 new_partial = (new_flags & EF_FRV_FPR_MASK);
4385 old_partial = (old_flags & EF_FRV_FPR_MASK);
4386 if (new_partial == old_partial)
4387 ;
4388
4389 else if (new_partial == 0)
4390 ;
4391
4392 else if (old_partial == 0)
4393 old_flags |= new_partial;
4394
4395 else
4396 {
4397 switch (new_partial)
4398 {
4399 default: strcat (new_opt, " -mfpr-?"); break;
4400 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break;
4401 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break;
4402 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break;
4403 }
4404
4405 switch (old_partial)
4406 {
4407 default: strcat (old_opt, " -mfpr-?"); break;
4408 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break;
4409 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break;
4410 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break;
4411 }
4412 }
4413
4414 /* Warn if different dword support was used. Note, 0 means nothing is
4415 said about the dword support. */
4416 new_partial = (new_flags & EF_FRV_DWORD_MASK);
4417 old_partial = (old_flags & EF_FRV_DWORD_MASK);
4418 if (new_partial == old_partial)
4419 ;
4420
4421 else if (new_partial == 0)
4422 ;
4423
4424 else if (old_partial == 0)
4425 old_flags |= new_partial;
4426
4427 else
4428 {
4429 switch (new_partial)
4430 {
4431 default: strcat (new_opt, " -mdword-?"); break;
4432 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break;
4433 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break;
4434 }
4435
4436 switch (old_partial)
4437 {
4438 default: strcat (old_opt, " -mdword-?"); break;
4439 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break;
4440 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break;
4441 }
4442 }
4443
4444 /* Or in flags that accumulate (ie, if one module uses it, mark that the
4445 feature is used. */
4446 old_flags |= new_flags & (EF_FRV_DOUBLE
4447 | EF_FRV_MEDIA
4448 | EF_FRV_MULADD
4449 | EF_FRV_NON_PIC_RELOCS);
4450
4451 /* If any module was compiled without -G0, clear the G0 bit. */
4452 old_flags = ((old_flags & ~ EF_FRV_G0)
4453 | (old_flags & new_flags & EF_FRV_G0));
4454
4455 /* If any module was compiled without -mnopack, clear the mnopack bit. */
4456 old_flags = ((old_flags & ~ EF_FRV_NOPACK)
4457 | (old_flags & new_flags & EF_FRV_NOPACK));
4458
4459 /* We don't have to do anything if the pic flags are the same, or the new
4460 module(s) were compiled with -mlibrary-pic. */
4461 new_partial = (new_flags & EF_FRV_PIC_FLAGS);
4462 old_partial = (old_flags & EF_FRV_PIC_FLAGS);
4463 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0))
4464 ;
4465
4466 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic
4467 flags if any from the new module. */
4468 else if ((old_partial & EF_FRV_LIBPIC) != 0)
4469 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial;
4470
4471 /* If we have mixtures of -fpic and -fPIC, or in both bits. */
4472 else if (new_partial != 0 && old_partial != 0)
4473 old_flags |= new_partial;
4474
4475 /* One module was compiled for pic and the other was not, see if we have
4476 had any relocations that are not pic-safe. */
4477 else
4478 {
4479 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0)
4480 old_flags |= new_partial;
4481 else
4482 {
4483 old_flags &= ~ EF_FRV_PIC_FLAGS;
4484 #ifndef FRV_NO_PIC_ERROR
4485 error = TRUE;
4486 (*_bfd_error_handler)
4487 (_("%s: compiled with %s and linked with modules that use non-pic relocations"),
4488 bfd_get_filename (ibfd),
4489 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic");
4490 #endif
4491 }
4492 }
4493
4494 /* Warn if different cpu is used (allow a specific cpu to override
4495 the generic cpu). */
4496 new_partial = (new_flags & EF_FRV_CPU_MASK);
4497 old_partial = (old_flags & EF_FRV_CPU_MASK);
4498 if (frv_elf_arch_extension_p (new_partial, old_partial))
4499 ;
4500
4501 else if (frv_elf_arch_extension_p (old_partial, new_partial))
4502 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial;
4503
4504 else
4505 {
4506 switch (new_partial)
4507 {
4508 default: strcat (new_opt, " -mcpu=?"); break;
4509 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break;
4510 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break;
4511 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break;
4512 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break;
4513 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break;
4514 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break;
4515 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break;
4516 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break;
4517 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break;
4518 }
4519
4520 switch (old_partial)
4521 {
4522 default: strcat (old_opt, " -mcpu=?"); break;
4523 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break;
4524 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break;
4525 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break;
4526 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break;
4527 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break;
4528 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break;
4529 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break;
4530 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break;
4531 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break;
4532 }
4533 }
4534
4535 /* Print out any mismatches from above. */
4536 if (new_opt[0])
4537 {
4538 error = TRUE;
4539 (*_bfd_error_handler)
4540 (_("%s: compiled with %s and linked with modules compiled with %s"),
4541 bfd_get_filename (ibfd), new_opt, old_opt);
4542 }
4543
4544 /* Warn about any other mismatches */
4545 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS);
4546 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS);
4547 if (new_partial != old_partial)
4548 {
4549 old_flags |= new_partial;
4550 error = TRUE;
4551 (*_bfd_error_handler)
4552 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"),
4553 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial);
4554 }
4555 }
4556
4557 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */
4558 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE)
4559 old_flags |= EF_FRV_NOPACK;
4560
4561 /* Update the old flags now with changes made above. */
4562 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK;
4563 elf_elfheader (obfd)->e_flags = old_flags;
4564 if (old_partial != (old_flags & EF_FRV_CPU_MASK))
4565 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd));
4566
4567 if (((new_flags & EF_FRV_FDPIC) == 0)
4568 != (! IS_FDPIC (ibfd)))
4569 {
4570 error = TRUE;
4571 if (IS_FDPIC (obfd))
4572 (*_bfd_error_handler)
4573 (_("%s: cannot link non-fdpic object file into fdpic executable"),
4574 bfd_get_filename (ibfd));
4575 else
4576 (*_bfd_error_handler)
4577 (_("%s: cannot link fdpic object file into non-fdpic executable"),
4578 bfd_get_filename (ibfd));
4579 }
4580
4581 if (error)
4582 bfd_set_error (bfd_error_bad_value);
4583
4584 return !error;
4585 }
4586
4587 \f
4588 bfd_boolean
4589 frv_elf_print_private_bfd_data (abfd, ptr)
4590 bfd *abfd;
4591 PTR ptr;
4592 {
4593 FILE *file = (FILE *) ptr;
4594 flagword flags;
4595
4596 BFD_ASSERT (abfd != NULL && ptr != NULL);
4597
4598 /* Print normal ELF private data. */
4599 _bfd_elf_print_private_bfd_data (abfd, ptr);
4600
4601 flags = elf_elfheader (abfd)->e_flags;
4602 fprintf (file, _("private flags = 0x%lx:"), (long)flags);
4603
4604 switch (flags & EF_FRV_CPU_MASK)
4605 {
4606 default: break;
4607 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break;
4608 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break;
4609 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break;
4610 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break;
4611 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break;
4612 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break;
4613 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break;
4614 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break;
4615 }
4616
4617 switch (flags & EF_FRV_GPR_MASK)
4618 {
4619 default: break;
4620 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break;
4621 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break;
4622 }
4623
4624 switch (flags & EF_FRV_FPR_MASK)
4625 {
4626 default: break;
4627 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break;
4628 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break;
4629 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break;
4630 }
4631
4632 switch (flags & EF_FRV_DWORD_MASK)
4633 {
4634 default: break;
4635 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break;
4636 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break;
4637 }
4638
4639 if (flags & EF_FRV_DOUBLE)
4640 fprintf (file, " -mdouble");
4641
4642 if (flags & EF_FRV_MEDIA)
4643 fprintf (file, " -mmedia");
4644
4645 if (flags & EF_FRV_MULADD)
4646 fprintf (file, " -mmuladd");
4647
4648 if (flags & EF_FRV_PIC)
4649 fprintf (file, " -fpic");
4650
4651 if (flags & EF_FRV_BIGPIC)
4652 fprintf (file, " -fPIC");
4653
4654 if (flags & EF_FRV_LIBPIC)
4655 fprintf (file, " -mlibrary-pic");
4656
4657 if (flags & EF_FRV_FDPIC)
4658 fprintf (file, " -mfdpic");
4659
4660 if (flags & EF_FRV_NON_PIC_RELOCS)
4661 fprintf (file, " non-pic relocations");
4662
4663 if (flags & EF_FRV_G0)
4664 fprintf (file, " -G0");
4665
4666 fputc ('\n', file);
4667 return TRUE;
4668 }
4669
4670 \f
4671 #define ELF_ARCH bfd_arch_frv
4672 #define ELF_MACHINE_CODE EM_CYGNUS_FRV
4673 #define ELF_MAXPAGESIZE 0x1000
4674
4675 #define TARGET_BIG_SYM bfd_elf32_frv_vec
4676 #define TARGET_BIG_NAME "elf32-frv"
4677
4678 #define elf_info_to_howto frv_info_to_howto_rela
4679 #define elf_backend_relocate_section elf32_frv_relocate_section
4680 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook
4681 #define elf_backend_gc_sweep_hook elf32_frv_gc_sweep_hook
4682 #define elf_backend_check_relocs elf32_frv_check_relocs
4683 #define elf_backend_object_p elf32_frv_object_p
4684 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook
4685
4686 #define elf_backend_can_gc_sections 1
4687 #define elf_backend_rela_normal 1
4688
4689 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup
4690 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags
4691 #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data
4692 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data
4693 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data
4694
4695 #define elf_backend_want_got_sym 1
4696 #define elf_backend_got_header_size 0
4697 #define elf_backend_want_got_plt 0
4698 #define elf_backend_plt_readonly 1
4699 #define elf_backend_want_plt_sym 0
4700 #define elf_backend_plt_header_size 0
4701
4702 #define elf_backend_finish_dynamic_sections \
4703 elf32_frv_finish_dynamic_sections
4704
4705 #include "elf32-target.h"
4706
4707 #undef ELF_MAXPAGESIZE
4708 #define ELF_MAXPAGESIZE 0x4000
4709
4710 #undef TARGET_BIG_SYM
4711 #define TARGET_BIG_SYM bfd_elf32_frvfdpic_vec
4712 #undef TARGET_BIG_NAME
4713 #define TARGET_BIG_NAME "elf32-frvfdpic"
4714 #undef elf32_bed
4715 #define elf32_bed elf32_frvfdpic_bed
4716
4717 #undef elf_info_to_howto_rel
4718 #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel
4719
4720 #undef bfd_elf32_bfd_link_hash_table_create
4721 #define bfd_elf32_bfd_link_hash_table_create \
4722 frvfdpic_elf_link_hash_table_create
4723 #undef elf_backend_always_size_sections
4724 #define elf_backend_always_size_sections \
4725 elf32_frvfdpic_always_size_sections
4726 #undef elf_backend_modify_segment_map
4727 #define elf_backend_modify_segment_map \
4728 elf32_frvfdpic_modify_segment_map
4729
4730 #undef elf_backend_create_dynamic_sections
4731 #define elf_backend_create_dynamic_sections \
4732 elf32_frvfdpic_create_dynamic_sections
4733 #undef elf_backend_adjust_dynamic_symbol
4734 #define elf_backend_adjust_dynamic_symbol \
4735 elf32_frvfdpic_adjust_dynamic_symbol
4736 #undef elf_backend_size_dynamic_sections
4737 #define elf_backend_size_dynamic_sections \
4738 elf32_frvfdpic_size_dynamic_sections
4739 #undef elf_backend_finish_dynamic_symbol
4740 #define elf_backend_finish_dynamic_symbol \
4741 elf32_frvfdpic_finish_dynamic_symbol
4742 #undef elf_backend_finish_dynamic_sections
4743 #define elf_backend_finish_dynamic_sections \
4744 elf32_frvfdpic_finish_dynamic_sections
4745
4746 #undef elf_backend_can_make_relative_eh_frame
4747 #define elf_backend_can_make_relative_eh_frame \
4748 frvfdpic_elf_use_relative_eh_frame
4749 #undef elf_backend_can_make_lsda_relative_eh_frame
4750 #define elf_backend_can_make_lsda_relative_eh_frame \
4751 frvfdpic_elf_use_relative_eh_frame
4752 #undef elf_backend_encode_eh_address
4753 #define elf_backend_encode_eh_address \
4754 frvfdpic_elf_encode_eh_address
4755
4756 #undef elf_backend_may_use_rel_p
4757 #define elf_backend_may_use_rel_p 1
4758 #undef elf_backend_may_use_rela_p
4759 #define elf_backend_may_use_rela_p 1
4760 /* We use REL for dynamic relocations only. */
4761 #undef elf_backend_default_use_rela_p
4762 #define elf_backend_default_use_rela_p 1
4763
4764 #include "elf32-target.h"
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