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* Makefile.am: Remove all mention of elflink.h.
[deliverable/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
587 /* An extension of the elf hash table data structure, containing some
588 additional FRV-specific data. */
589 struct frv_elf_link_hash_table
590 {
591 struct elf_link_hash_table elf;
592
593 /* A pointer to the .got section. */
594 asection *sgot;
595 /* A pointer to the .rel.got section. */
596 asection *sgotrel;
597 /* A pointer to the .rofixup section. */
598 asection *sgotfixup;
599 /* A pointer to the .plt section. */
600 asection *splt;
601 /* A pointer to the .rel.plt section. */
602 asection *spltrel;
603 /* GOT base offset. */
604 bfd_vma got0;
605 /* Location of the first non-lazy PLT entry, i.e., the number of
606 bytes taken by lazy PLT entries. */
607 bfd_vma plt0;
608 /* A hash table holding information about which symbols were
609 referenced with which PIC-related relocations. */
610 struct htab *relocs_info;
611 };
612
613 /* Get the FRV ELF linker hash table from a link_info structure. */
614
615 #define frv_hash_table(info) \
616 ((struct frv_elf_link_hash_table *) ((info)->hash))
617
618 #define frv_got_section(info) \
619 (frv_hash_table (info)->sgot)
620 #define frv_gotrel_section(info) \
621 (frv_hash_table (info)->sgotrel)
622 #define frv_gotfixup_section(info) \
623 (frv_hash_table (info)->sgotfixup)
624 #define frv_plt_section(info) \
625 (frv_hash_table (info)->splt)
626 #define frv_pltrel_section(info) \
627 (frv_hash_table (info)->spltrel)
628 #define frv_relocs_info(info) \
629 (frv_hash_table (info)->relocs_info)
630 #define frv_got_initial_offset(info) \
631 (frv_hash_table (info)->got0)
632 #define frv_plt_initial_offset(info) \
633 (frv_hash_table (info)->plt0)
634
635 /* Create an FRV ELF linker hash table. */
636
637 static struct bfd_link_hash_table *
638 frv_elf_link_hash_table_create (bfd *abfd)
639 {
640 struct frv_elf_link_hash_table *ret;
641 bfd_size_type amt = sizeof (struct frv_elf_link_hash_table);
642
643 ret = bfd_zalloc (abfd, amt);
644 if (ret == NULL)
645 return NULL;
646
647 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
648 _bfd_elf_link_hash_newfunc))
649 {
650 free (ret);
651 return NULL;
652 }
653
654 return &ret->elf.root;
655 }
656
657 /* Decide whether a reference to a symbol can be resolved locally or
658 not. If the symbol is protected, we want the local address, but
659 its function descriptor must be assigned by the dynamic linker. */
660 #define FRV_SYM_LOCAL(INFO, H) \
661 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
662 || ! elf_hash_table (INFO)->dynamic_sections_created \
663 || (/* The condition below is an ugly hack to get .scommon data to
664 be regarded as local. For some reason the
665 ELF_LINK_HASH_DEF_REGULAR bit is not set on such common
666 symbols, and the SEC_IS_COMMON bit is not set any longer
667 when we need to perform this test. Hopefully this
668 approximation is good enough. */ \
669 ((H)->root.type == bfd_link_hash_defined \
670 || (H)->root.type == bfd_link_hash_defweak) \
671 && (H)->root.u.def.section->output_section \
672 && ((H)->root.u.def.section->flags & SEC_LINKER_CREATED)))
673 #define FRV_FUNCDESC_LOCAL(INFO, H) \
674 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
675
676 /* This structure collects information on what kind of GOT, PLT or
677 function descriptors are required by relocations that reference a
678 certain symbol. */
679 struct frv_pic_relocs_info
680 {
681 /* The index of the symbol, as stored in the relocation r_info, if
682 we have a local symbol; -1 otherwise. */
683 long symndx;
684 union
685 {
686 /* The input bfd in which the symbol is defined, if it's a local
687 symbol. */
688 bfd *abfd;
689 /* If symndx == -1, the hash table entry corresponding to a global
690 symbol (even if it turns out to bind locally, in which case it
691 should ideally be replaced with section's symndx + addend). */
692 struct elf_link_hash_entry *h;
693 } d;
694 /* The addend of the relocation that references the symbol. */
695 bfd_vma addend;
696
697 /* The fields above are used to identify an entry. The fields below
698 contain information on how an entry is used and, later on, which
699 locations it was assigned. */
700 /* The following 3 fields record whether the symbol+addend above was
701 ever referenced with a GOT relocation. The 12 suffix indicates a
702 GOT12 relocation; los is used for GOTLO relocations that are not
703 matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI
704 pairs. */
705 unsigned got12:1;
706 unsigned gotlos:1;
707 unsigned gothilo:1;
708 /* Whether a FUNCDESC relocation references symbol+addend. */
709 unsigned fd:1;
710 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
711 unsigned fdgot12:1;
712 unsigned fdgotlos:1;
713 unsigned fdgothilo:1;
714 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
715 unsigned fdgoff12:1;
716 unsigned fdgofflos:1;
717 unsigned fdgoffhilo:1;
718 /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or
719 GOTOFFHI relocations. The addend doesn't really matter, since we
720 envision that this will only be used to check whether the symbol
721 is mapped to the same segment as the got. */
722 unsigned gotoff:1;
723 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
724 unsigned call:1;
725 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
726 relocation. */
727 unsigned sym:1;
728 /* Whether we need a PLT entry for a symbol. Should be implied by
729 something like:
730 (call && symndx == -1 && ! FRV_SYM_LOCAL (info, d.h)) */
731 unsigned plt:1;
732 /* Whether a function descriptor should be created in this link unit
733 for symbol+addend. Should be implied by something like:
734 (plt || fdgotoff12 || fdgotofflos || fdgotofflohi
735 || ((fd || fdgot12 || fdgotlos || fdgothilo)
736 && (symndx != -1 || FRV_FUNCDESC_LOCAL (info, d.h)))) */
737 unsigned privfd:1;
738 /* Whether a lazy PLT entry is needed for this symbol+addend.
739 Should be implied by something like:
740 (privfd && symndx == -1 && ! FRV_SYM_LOCAL (info, d.h)
741 && ! (info->flags & DF_BIND_NOW)) */
742 unsigned lazyplt:1;
743 /* Whether we've already emitted GOT relocations and PLT entries as
744 needed for this symbol. */
745 unsigned done:1;
746
747 /* The number of R_FRV_32, R_FRV_FUNCDESC and R_FRV_FUNCDESC_VALUE
748 relocations referencing the symbol. */
749 unsigned relocs32, relocsfd, relocsfdv;
750
751 /* The number of .rofixups entries and dynamic relocations allocated
752 for this symbol, minus any that might have already been used. */
753 unsigned fixups, dynrelocs;
754
755 /* The offsets of the GOT entries assigned to symbol+addend, to the
756 function descriptor's address, and to a function descriptor,
757 respectively. Should be zero if unassigned. The offsets are
758 counted from the value that will be assigned to the PIC register,
759 not from the beginning of the .got section. */
760 bfd_signed_vma got_entry, fdgot_entry, fd_entry;
761 /* The offsets of the PLT entries assigned to symbol+addend,
762 non-lazy and lazy, respectively. If unassigned, should be
763 (bfd_vma)-1. */
764 bfd_vma plt_entry, lzplt_entry;
765 };
766
767 /* Compute a hash with the key fields of an frv_pic_relocs_info entry. */
768 static hashval_t
769 frv_pic_relocs_info_hash (const void *entry_)
770 {
771 const struct frv_pic_relocs_info *entry = entry_;
772
773 return (entry->symndx == -1
774 ? entry->d.h->root.root.hash
775 : entry->symndx + entry->d.abfd->id * 257) + entry->addend;
776 }
777
778 /* Test whether the key fields of two frv_pic_relocs_info entries are
779 identical. */
780 static int
781 frv_pic_relocs_info_eq (const void *entry1, const void *entry2)
782 {
783 const struct frv_pic_relocs_info *e1 = entry1;
784 const struct frv_pic_relocs_info *e2 = entry2;
785
786 return e1->symndx == e2->symndx && e1->addend == e2->addend
787 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd);
788 }
789
790 /* Find or create an entry in a hash table HT that matches the key
791 fields of the given ENTRY. If it's not found, memory for a new
792 entry is allocated in ABFD's obstack. */
793 static struct frv_pic_relocs_info *
794 frv_pic_relocs_info_find (struct htab *ht,
795 bfd *abfd,
796 const struct frv_pic_relocs_info *entry,
797 enum insert_option insert)
798 {
799 struct frv_pic_relocs_info **loc =
800 (struct frv_pic_relocs_info **) htab_find_slot (ht, entry, insert);
801
802 if (! loc)
803 return NULL;
804
805 if (*loc)
806 return *loc;
807
808 *loc = bfd_zalloc (abfd, sizeof (**loc));
809
810 if (! *loc)
811 return *loc;
812
813 (*loc)->symndx = entry->symndx;
814 (*loc)->d = entry->d;
815 (*loc)->addend = entry->addend;
816 (*loc)->plt_entry = (bfd_vma)-1;
817 (*loc)->lzplt_entry = (bfd_vma)-1;
818
819 return *loc;
820 }
821
822 /* Obtain the address of the entry in HT associated with H's symbol +
823 addend, creating a new entry if none existed. ABFD is only used
824 for memory allocation purposes. */
825 inline static struct frv_pic_relocs_info *
826 frv_pic_relocs_info_for_global (struct htab *ht,
827 bfd *abfd,
828 struct elf_link_hash_entry *h,
829 bfd_vma addend,
830 enum insert_option insert)
831 {
832 struct frv_pic_relocs_info entry;
833
834 entry.symndx = -1;
835 entry.d.h = h;
836 entry.addend = addend;
837
838 return frv_pic_relocs_info_find (ht, abfd, &entry, insert);
839 }
840
841 /* Obtain the address of the entry in HT associated with the SYMNDXth
842 local symbol of the input bfd ABFD, plus the addend, creating a new
843 entry if none existed. */
844 inline static struct frv_pic_relocs_info *
845 frv_pic_relocs_info_for_local (struct htab *ht,
846 bfd *abfd,
847 long symndx,
848 bfd_vma addend,
849 enum insert_option insert)
850 {
851 struct frv_pic_relocs_info entry;
852
853 entry.symndx = symndx;
854 entry.d.abfd = abfd;
855 entry.addend = addend;
856
857 return frv_pic_relocs_info_find (ht, abfd, &entry, insert);
858 }
859
860 /* Merge fields set by check_relocs() of two entries that end up being
861 mapped to the same (presumably global) symbol. */
862
863 inline static void
864 frv_pic_merge_early_relocs_info (struct frv_pic_relocs_info *e2,
865 struct frv_pic_relocs_info const *e1)
866 {
867 e2->got12 |= e1->got12;
868 e2->gotlos |= e1->gotlos;
869 e2->gothilo |= e1->gothilo;
870 e2->fd |= e1->fd;
871 e2->fdgot12 |= e1->fdgot12;
872 e2->fdgotlos |= e1->fdgotlos;
873 e2->fdgothilo |= e1->fdgothilo;
874 e2->fdgoff12 |= e1->fdgoff12;
875 e2->fdgofflos |= e1->fdgofflos;
876 e2->fdgoffhilo |= e1->fdgoffhilo;
877 e2->gotoff |= e1->gotoff;
878 e2->call |= e1->call;
879 e2->sym |= e1->sym;
880
881 #if 0
882 /* These are set in _frv_count_got_plt_entries() or later, and this
883 function is only called in _frv_resolve_final_relocs_info(), that
884 runs just before it, so we don't have to worry about the fields
885 below. */
886
887 e2->plt |= e1->plt;
888 e2->privfd |= e1->privfd;
889 e2->lazyplt |= e1->lazyplt;
890 e2->done |= e1->done;
891
892 e2->relocs32 += e1->relocs32;
893 e2->relocsfd += e1->relocsfd;
894 e2->relocsfdv += e1->relocsfdv;
895 e2->fixups += e1->fixups;
896 e2->dynrelocs += e1->dynrelocs;
897
898 if (abs (e1->got_entry) < abs (e2->got_entry))
899 e2->got_entry = e1->got_entry;
900 if (abs (e1->fdgot_entry) < abs (e2->fdgot_entry))
901 e2->fdgot_entry = e1->fdgot_entry;
902 if (abs (e1->fd_entry) < abs (e2->fd_entry))
903 e2->fd_entry = e1->fd_entry;
904
905 if (e1->plt_entry < e2->plt_entry)
906 e2->plt_entry = e1->plt_entry;
907 if (e1->lzplt_entry < e2->lzplt_entry)
908 e2->lzplt_entry = e1->lzplt_entry;
909 #endif
910 }
911
912 /* Every block of 65535 lazy PLT entries shares a single call to the
913 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
914 32767, counting from 0). All other lazy PLT entries branch to it
915 in a single instruction. */
916
917 #define FRV_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4)
918 #define FRV_LZPLT_RESOLV_LOC (8 * 32767)
919
920 /* Add a dynamic relocation to the SRELOC section. */
921
922 inline static bfd_vma
923 _frv_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
924 int reloc_type, long dynindx, bfd_vma addend,
925 struct frv_pic_relocs_info *entry)
926 {
927 Elf_Internal_Rela outrel;
928 bfd_vma reloc_offset;
929
930 outrel.r_offset = offset;
931 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
932 outrel.r_addend = addend;
933
934 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel);
935 BFD_ASSERT (reloc_offset < sreloc->_raw_size);
936 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
937 sreloc->contents + reloc_offset);
938 sreloc->reloc_count++;
939
940 BFD_ASSERT (entry->dynrelocs > 0);
941 entry->dynrelocs--;
942
943 return reloc_offset;
944 }
945
946 /* Add a fixup to the ROFIXUP section. */
947
948 static bfd_vma
949 _frv_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset,
950 struct frv_pic_relocs_info *entry)
951 {
952 bfd_vma fixup_offset;
953
954 if (rofixup->flags & SEC_EXCLUDE)
955 return -1;
956
957 fixup_offset = rofixup->reloc_count * 4;
958 if (rofixup->contents)
959 {
960 BFD_ASSERT (fixup_offset < rofixup->_raw_size);
961 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset);
962 }
963 rofixup->reloc_count++;
964
965 if (entry)
966 {
967 BFD_ASSERT (entry->fixups > 0);
968 entry->fixups--;
969 }
970
971 return fixup_offset;
972 }
973
974 /* Find the segment number in which OSEC, and output section, is
975 located. */
976
977 static unsigned
978 _frv_osec_to_segment (bfd *output_bfd, asection *osec)
979 {
980 struct elf_segment_map *m;
981 Elf_Internal_Phdr *p;
982
983 /* Find the segment that contains the output_section. */
984 for (m = elf_tdata (output_bfd)->segment_map,
985 p = elf_tdata (output_bfd)->phdr;
986 m != NULL;
987 m = m->next, p++)
988 {
989 int i;
990
991 for (i = m->count - 1; i >= 0; i--)
992 if (m->sections[i] == osec)
993 break;
994
995 if (i >= 0)
996 break;
997 }
998
999 return p - elf_tdata (output_bfd)->phdr;
1000 }
1001
1002 inline static bfd_boolean
1003 _frv_osec_readonly_p (bfd *output_bfd, asection *osec)
1004 {
1005 unsigned seg = _frv_osec_to_segment (output_bfd, osec);
1006
1007 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
1008 }
1009
1010 /* Generate relocations for GOT entries, function descriptors, and
1011 code for PLT and lazy PLT entries. */
1012
1013 inline static bfd_boolean
1014 _frv_emit_got_relocs_plt_entries (struct frv_pic_relocs_info *entry,
1015 bfd *output_bfd,
1016 struct bfd_link_info *info,
1017 asection *sec,
1018 Elf_Internal_Sym *sym,
1019 bfd_vma addend)
1020
1021 {
1022 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1;
1023 int dynindx = -1;
1024
1025 if (entry->done)
1026 return TRUE;
1027 entry->done = 1;
1028
1029 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry)
1030 {
1031 /* If the symbol is dynamic, consider it for dynamic
1032 relocations, otherwise decay to section + offset. */
1033 if (entry->symndx == -1 && entry->d.h->dynindx != -1)
1034 dynindx = entry->d.h->dynindx;
1035 else
1036 {
1037 if (sec->output_section
1038 && ! bfd_is_abs_section (sec->output_section)
1039 && ! bfd_is_und_section (sec->output_section))
1040 dynindx = elf_section_data (sec->output_section)->dynindx;
1041 else
1042 dynindx = 0;
1043 }
1044 }
1045
1046 /* Generate relocation for GOT entry pointing to the symbol. */
1047 if (entry->got_entry)
1048 {
1049 int idx = dynindx;
1050 bfd_vma ad = addend;
1051
1052 /* If the symbol is dynamic but binds locally, use
1053 section+offset. */
1054 if (sec && (entry->symndx != -1 || FRV_SYM_LOCAL (info, entry->d.h)))
1055 {
1056 if (entry->symndx == -1)
1057 ad += entry->d.h->root.u.def.value;
1058 else
1059 ad += sym->st_value;
1060 ad += sec->output_offset;
1061 if (sec->output_section && elf_section_data (sec->output_section))
1062 idx = elf_section_data (sec->output_section)->dynindx;
1063 else
1064 idx = 0;
1065 }
1066
1067 /* If we're linking an executable at a fixed address, we can
1068 omit the dynamic relocation as long as the symbol is local to
1069 this module. */
1070 if (info->executable && !info->pie
1071 && (entry->symndx != -1 || FRV_SYM_LOCAL (info, entry->d.h)))
1072 {
1073 if (sec)
1074 ad += sec->output_section->vma;
1075 if (entry->symndx != -1
1076 || entry->d.h->root.type != bfd_link_hash_undefweak)
1077 _frv_add_rofixup (output_bfd, frv_gotfixup_section (info),
1078 frv_got_section (info)->output_section->vma
1079 + frv_got_section (info)->output_offset
1080 + frv_got_initial_offset (info)
1081 + entry->got_entry, entry);
1082 }
1083 else
1084 _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info),
1085 _bfd_elf_section_offset
1086 (output_bfd, info,
1087 frv_got_section (info),
1088 frv_got_initial_offset (info)
1089 + entry->got_entry)
1090 + frv_got_section (info)->output_section->vma
1091 + frv_got_section (info)->output_offset,
1092 R_FRV_32, idx, ad, entry);
1093
1094 bfd_put_32 (output_bfd, ad,
1095 frv_got_section (info)->contents
1096 + frv_got_initial_offset (info)
1097 + entry->got_entry);
1098 }
1099
1100 /* Generate relocation for GOT entry pointing to a canonical
1101 function descriptor. */
1102 if (entry->fdgot_entry)
1103 {
1104 int reloc, idx;
1105 bfd_vma ad = 0;
1106
1107 if (! (entry->symndx == -1
1108 && entry->d.h->root.type == bfd_link_hash_undefweak
1109 && FRV_SYM_LOCAL (info, entry->d.h)))
1110 {
1111 /* If the symbol is dynamic and there may be dynamic symbol
1112 resolution because we are, or are linked with, a shared
1113 library, emit a FUNCDESC relocation such that the dynamic
1114 linker will allocate the function descriptor. If the
1115 symbol needs a non-local function descriptor but binds
1116 locally (e.g., its visibility is protected, emit a
1117 dynamic relocation decayed to section+offset. */
1118 if (entry->symndx == -1 && ! FRV_FUNCDESC_LOCAL (info, entry->d.h)
1119 && FRV_SYM_LOCAL (info, entry->d.h)
1120 && !(info->executable && !info->pie))
1121 {
1122 reloc = R_FRV_FUNCDESC;
1123 idx = elf_section_data (entry->d.h->root.u.def.section
1124 ->output_section)->dynindx;
1125 ad = entry->d.h->root.u.def.section->output_offset
1126 + entry->d.h->root.u.def.value;
1127 }
1128 else if (entry->symndx == -1
1129 && ! FRV_FUNCDESC_LOCAL (info, entry->d.h))
1130 {
1131 reloc = R_FRV_FUNCDESC;
1132 idx = dynindx;
1133 ad = addend;
1134 if (ad)
1135 return FALSE;
1136 }
1137 else
1138 {
1139 /* Otherwise, we know we have a private function descriptor,
1140 so reference it directly. */
1141 if (elf_hash_table (info)->dynamic_sections_created)
1142 BFD_ASSERT (entry->privfd);
1143 reloc = R_FRV_32;
1144 idx = elf_section_data (frv_got_section (info)
1145 ->output_section)->dynindx;
1146 ad = frv_got_section (info)->output_offset
1147 + frv_got_initial_offset (info) + entry->fd_entry;
1148 }
1149
1150 /* If there is room for dynamic symbol resolution, emit the
1151 dynamic relocation. However, if we're linking an
1152 executable at a fixed location, we won't have emitted a
1153 dynamic symbol entry for the got section, so idx will be
1154 zero, which means we can and should compute the address
1155 of the private descriptor ourselves. */
1156 if (info->executable && !info->pie
1157 && (entry->symndx != -1
1158 || FRV_FUNCDESC_LOCAL (info, entry->d.h)))
1159 {
1160 ad += frv_got_section (info)->output_section->vma;
1161 _frv_add_rofixup (output_bfd, frv_gotfixup_section (info),
1162 frv_got_section (info)->output_section->vma
1163 + frv_got_section (info)->output_offset
1164 + frv_got_initial_offset (info)
1165 + entry->fdgot_entry, entry);
1166 }
1167 else
1168 _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info),
1169 _bfd_elf_section_offset
1170 (output_bfd, info,
1171 frv_got_section (info),
1172 frv_got_initial_offset (info)
1173 + entry->fdgot_entry)
1174 + frv_got_section (info)->output_section->vma
1175 + frv_got_section (info)->output_offset,
1176 reloc, idx, ad, entry);
1177 }
1178
1179 bfd_put_32 (output_bfd, ad,
1180 frv_got_section (info)->contents
1181 + frv_got_initial_offset (info)
1182 + entry->fdgot_entry);
1183 }
1184
1185 /* Generate relocation to fill in a private function descriptor in
1186 the GOT. */
1187 if (entry->fd_entry)
1188 {
1189 int idx = dynindx;
1190 bfd_vma ad = addend;
1191 bfd_vma ofst;
1192 long lowword, highword;
1193
1194 /* If the symbol is dynamic but binds locally, use
1195 section+offset. */
1196 if (sec && (entry->symndx != -1 || FRV_SYM_LOCAL (info, entry->d.h)))
1197 {
1198 if (entry->symndx == -1)
1199 ad += entry->d.h->root.u.def.value;
1200 else
1201 ad += sym->st_value;
1202 ad += sec->output_offset;
1203 if (sec->output_section && elf_section_data (sec->output_section))
1204 idx = elf_section_data (sec->output_section)->dynindx;
1205 else
1206 idx = 0;
1207 }
1208
1209 /* If we're linking an executable at a fixed address, we can
1210 omit the dynamic relocation as long as the symbol is local to
1211 this module. */
1212 if (info->executable && !info->pie
1213 && (entry->symndx != -1 || FRV_SYM_LOCAL (info, entry->d.h)))
1214 {
1215 if (sec)
1216 ad += sec->output_section->vma;
1217 ofst = 0;
1218 if (entry->symndx != -1
1219 || entry->d.h->root.type != bfd_link_hash_undefweak)
1220 {
1221 _frv_add_rofixup (output_bfd, frv_gotfixup_section (info),
1222 frv_got_section (info)->output_section->vma
1223 + frv_got_section (info)->output_offset
1224 + frv_got_initial_offset (info)
1225 + entry->fd_entry, entry);
1226 _frv_add_rofixup (output_bfd, frv_gotfixup_section (info),
1227 frv_got_section (info)->output_section->vma
1228 + frv_got_section (info)->output_offset
1229 + frv_got_initial_offset (info)
1230 + entry->fd_entry + 4, entry);
1231 }
1232 }
1233 else
1234 {
1235 ofst =
1236 _frv_add_dyn_reloc (output_bfd,
1237 entry->lazyplt ? frv_pltrel_section (info)
1238 : frv_gotrel_section (info),
1239 _bfd_elf_section_offset
1240 (output_bfd, info,
1241 frv_got_section (info),
1242 frv_got_initial_offset (info)
1243 + entry->fd_entry)
1244 + frv_got_section (info)->output_section->vma
1245 + frv_got_section (info)->output_offset,
1246 R_FRV_FUNCDESC_VALUE, idx, ad, entry);
1247 }
1248
1249 /* If we've omitted the dynamic relocation, just emit the fixed
1250 addresses of the symbol and of the local GOT base offset. */
1251 if (info->executable && !info->pie && sec && sec->output_section)
1252 {
1253 lowword = ad;
1254 highword = frv_got_section (info)->output_section->vma
1255 + frv_got_section (info)->output_offset
1256 + frv_got_initial_offset (info);
1257 }
1258 else if (entry->lazyplt)
1259 {
1260 if (ad)
1261 return FALSE;
1262
1263 fd_lazy_rel_offset = ofst;
1264
1265 /* A function descriptor used for lazy or local resolving is
1266 initialized such that its high word contains the output
1267 section index in which the PLT entries are located, and
1268 the low word contains the address of the lazy PLT entry
1269 entry point, that must be within the memory region
1270 assigned to that section. */
1271 lowword = entry->lzplt_entry + 4
1272 + frv_plt_section (info)->output_offset
1273 + frv_plt_section (info)->output_section->vma;
1274 highword = _frv_osec_to_segment
1275 (output_bfd, frv_plt_section (info)->output_section);
1276 }
1277 else
1278 {
1279 /* A function descriptor for a local function gets the index
1280 of the section. For a non-local function, it's
1281 disregarded. */
1282 lowword = ad;
1283 if (entry->symndx == -1 && entry->d.h->dynindx != -1
1284 && entry->d.h->dynindx == idx)
1285 highword = 0;
1286 else
1287 highword = _frv_osec_to_segment (output_bfd, sec->output_section);
1288 }
1289
1290 bfd_put_32 (output_bfd, lowword,
1291 frv_got_section (info)->contents
1292 + frv_got_initial_offset (info)
1293 + entry->fd_entry);
1294 bfd_put_32 (output_bfd, highword,
1295 frv_got_section (info)->contents
1296 + frv_got_initial_offset (info)
1297 + entry->fd_entry + 4);
1298 }
1299
1300 /* Generate code for the PLT entry. */
1301 if (entry->plt_entry != (bfd_vma) -1)
1302 {
1303 bfd_byte *plt_code = frv_plt_section (info)->contents + entry->plt_entry;
1304
1305 BFD_ASSERT (entry->fd_entry);
1306
1307 /* Figure out what kind of PLT entry we need, depending on the
1308 location of the function descriptor within the GOT. */
1309 if (entry->fd_entry >= -(1 << (12 - 1))
1310 && entry->fd_entry < (1 << (12 - 1)))
1311 {
1312 /* lddi @(gr15, fd_entry), gr14 */
1313 bfd_put_32 (output_bfd,
1314 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)),
1315 plt_code);
1316 plt_code += 4;
1317 }
1318 else
1319 {
1320 if (entry->fd_entry >= -(1 << (16 - 1))
1321 && entry->fd_entry < (1 << (16 - 1)))
1322 {
1323 /* setlos lo(fd_entry), gr14 */
1324 bfd_put_32 (output_bfd,
1325 0x9cfc0000
1326 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)),
1327 plt_code);
1328 plt_code += 4;
1329 }
1330 else
1331 {
1332 /* sethi.p hi(fd_entry), gr14
1333 setlo lo(fd_entry), gr14 */
1334 bfd_put_32 (output_bfd,
1335 0x1cf80000
1336 | ((entry->fd_entry >> 16)
1337 & (((bfd_vma)1 << 16) - 1)),
1338 plt_code);
1339 bfd_put_32 (output_bfd,
1340 0x9cf40000
1341 | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)),
1342 plt_code);
1343 plt_code += 8;
1344 }
1345 /* ldd @(gr14,gr15),gr14 */
1346 bfd_put_32 (output_bfd, 0x9c08e14f, plt_code);
1347 plt_code += 4;
1348 }
1349 /* jmpl @(gr14,gr0) */
1350 bfd_put_32 (output_bfd, 0x8030e000, plt_code);
1351 }
1352
1353 /* Generate code for the lazy PLT entry. */
1354 if (entry->lzplt_entry != (bfd_vma) -1)
1355 {
1356 bfd_byte *lzplt_code = frv_plt_section (info)->contents
1357 + entry->lzplt_entry;
1358 bfd_vma resolverStub_addr;
1359
1360 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code);
1361 lzplt_code += 4;
1362
1363 resolverStub_addr = entry->lzplt_entry / FRV_LZPLT_BLOCK_SIZE
1364 * FRV_LZPLT_BLOCK_SIZE + FRV_LZPLT_RESOLV_LOC;
1365 if (resolverStub_addr >= frv_plt_initial_offset (info))
1366 resolverStub_addr = frv_plt_initial_offset (info) - 12;
1367
1368 if (entry->lzplt_entry == resolverStub_addr)
1369 {
1370 /* This is a lazy PLT entry that includes a resolver call. */
1371 /* ldd @(gr15,gr0), gr4
1372 jmpl @(gr4,gr0) */
1373 bfd_put_32 (output_bfd, 0x8808f140, lzplt_code);
1374 bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4);
1375 }
1376 else
1377 {
1378 /* bra resolverStub */
1379 bfd_put_32 (output_bfd,
1380 0xc01a0000
1381 | (((resolverStub_addr - entry->lzplt_entry)
1382 / 4) & (((bfd_vma)1 << 16) - 1)),
1383 lzplt_code);
1384 }
1385 }
1386
1387 return TRUE;
1388 }
1389
1390 /* Handle an FRV small data reloc. */
1391
1392 static bfd_reloc_status_type
1393 elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation,
1394 contents, value)
1395 struct bfd_link_info *info;
1396 bfd *input_bfd;
1397 asection *input_section;
1398 Elf_Internal_Rela *relocation;
1399 bfd_byte *contents;
1400 bfd_vma value;
1401 {
1402 bfd_vma insn;
1403 bfd_vma gp;
1404 struct bfd_link_hash_entry *h;
1405
1406 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1407
1408 gp = (h->u.def.value
1409 + h->u.def.section->output_section->vma
1410 + h->u.def.section->output_offset);
1411
1412 value -= input_section->output_section->vma;
1413 value -= (gp - input_section->output_section->vma);
1414
1415 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1416
1417 value += relocation->r_addend;
1418
1419 if ((long) value > 0x7ff || (long) value < -0x800)
1420 return bfd_reloc_overflow;
1421
1422 bfd_put_32 (input_bfd,
1423 (insn & 0xfffff000) | (value & 0xfff),
1424 contents + relocation->r_offset);
1425
1426 return bfd_reloc_ok;
1427 }
1428
1429 /* Handle an FRV small data reloc. for the u12 field. */
1430
1431 static bfd_reloc_status_type
1432 elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation,
1433 contents, value)
1434 struct bfd_link_info *info;
1435 bfd *input_bfd;
1436 asection *input_section;
1437 Elf_Internal_Rela *relocation;
1438 bfd_byte *contents;
1439 bfd_vma value;
1440 {
1441 bfd_vma insn;
1442 bfd_vma gp;
1443 struct bfd_link_hash_entry *h;
1444 bfd_vma mask;
1445
1446 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1447
1448 gp = (h->u.def.value
1449 + h->u.def.section->output_section->vma
1450 + h->u.def.section->output_offset);
1451
1452 value -= input_section->output_section->vma;
1453 value -= (gp - input_section->output_section->vma);
1454
1455 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1456
1457 value += relocation->r_addend;
1458
1459 if ((long) value > 0x7ff || (long) value < -0x800)
1460 return bfd_reloc_overflow;
1461
1462 /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */
1463 mask = 0x3f03f;
1464 insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f);
1465
1466 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1467
1468 return bfd_reloc_ok;
1469 }
1470
1471 /* Handle an FRV ELF HI16 reloc. */
1472
1473 static bfd_reloc_status_type
1474 elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value)
1475 bfd *input_bfd;
1476 Elf_Internal_Rela *relhi;
1477 bfd_byte *contents;
1478 bfd_vma value;
1479 {
1480 bfd_vma insn;
1481
1482 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
1483
1484 value += relhi->r_addend;
1485 value = ((value >> 16) & 0xffff);
1486
1487 insn = (insn & 0xffff0000) | value;
1488
1489 if ((long) value > 0xffff || (long) value < -0x10000)
1490 return bfd_reloc_overflow;
1491
1492 bfd_put_32 (input_bfd, insn, contents + relhi->r_offset);
1493 return bfd_reloc_ok;
1494
1495 }
1496 static bfd_reloc_status_type
1497 elf32_frv_relocate_lo16 (input_bfd, rello, contents, value)
1498 bfd *input_bfd;
1499 Elf_Internal_Rela *rello;
1500 bfd_byte *contents;
1501 bfd_vma value;
1502 {
1503 bfd_vma insn;
1504
1505 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
1506
1507 value += rello->r_addend;
1508 value = value & 0xffff;
1509
1510 insn = (insn & 0xffff0000) | value;
1511
1512 if ((long) value > 0xffff || (long) value < -0x10000)
1513 return bfd_reloc_overflow;
1514
1515 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
1516 return bfd_reloc_ok;
1517 }
1518
1519 /* Perform the relocation for the CALL label24 instruction. */
1520
1521 static bfd_reloc_status_type
1522 elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value)
1523 bfd *input_bfd;
1524 asection *input_section;
1525 Elf_Internal_Rela *rello;
1526 bfd_byte *contents;
1527 bfd_vma value;
1528 {
1529 bfd_vma insn;
1530 bfd_vma label6;
1531 bfd_vma label18;
1532
1533 /* The format for the call instruction is:
1534
1535 0 000000 0001111 000000000000000000
1536 label6 opcode label18
1537
1538 The branch calculation is: pc + (4*label24)
1539 where label24 is the concatenation of label6 and label18. */
1540
1541 /* Grab the instruction. */
1542 insn = bfd_get_32 (input_bfd, contents + rello->r_offset);
1543
1544 value -= input_section->output_section->vma + input_section->output_offset;
1545 value -= rello->r_offset;
1546 value += rello->r_addend;
1547
1548 value = value >> 2;
1549
1550 label6 = value & 0xfc0000;
1551 label6 = label6 << 7;
1552
1553 label18 = value & 0x3ffff;
1554
1555 insn = insn & 0x803c0000;
1556 insn = insn | label6;
1557 insn = insn | label18;
1558
1559 bfd_put_32 (input_bfd, insn, contents + rello->r_offset);
1560
1561 return bfd_reloc_ok;
1562 }
1563
1564 static bfd_reloc_status_type
1565 elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation,
1566 contents, value)
1567 struct bfd_link_info *info;
1568 bfd *input_bfd;
1569 asection *input_section;
1570 Elf_Internal_Rela *relocation;
1571 bfd_byte *contents;
1572 bfd_vma value;
1573 {
1574 bfd_vma insn;
1575 bfd_vma gp;
1576 struct bfd_link_hash_entry *h;
1577
1578 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1579
1580 gp = (h->u.def.value
1581 + h->u.def.section->output_section->vma
1582 + h->u.def.section->output_offset);
1583
1584 value -= input_section->output_section->vma;
1585 value -= (gp - input_section->output_section->vma);
1586 value += relocation->r_addend;
1587 value = ((value >> 16) & 0xffff);
1588
1589 if ((long) value > 0xffff || (long) value < -0x10000)
1590 return bfd_reloc_overflow;
1591
1592 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1593 insn = (insn & 0xffff0000) | value;
1594
1595 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1596 return bfd_reloc_ok;
1597 }
1598
1599 static bfd_reloc_status_type
1600 elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation,
1601 contents, value)
1602 struct bfd_link_info *info;
1603 bfd *input_bfd;
1604 asection *input_section;
1605 Elf_Internal_Rela *relocation;
1606 bfd_byte *contents;
1607 bfd_vma value;
1608 {
1609 bfd_vma insn;
1610 bfd_vma gp;
1611 struct bfd_link_hash_entry *h;
1612
1613 h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
1614
1615 gp = (h->u.def.value
1616 + h->u.def.section->output_section->vma
1617 + h->u.def.section->output_offset);
1618
1619 value -= input_section->output_section->vma;
1620 value -= (gp - input_section->output_section->vma);
1621 value += relocation->r_addend;
1622 value = value & 0xffff;
1623
1624 if ((long) value > 0xffff || (long) value < -0x10000)
1625 return bfd_reloc_overflow;
1626
1627 insn = bfd_get_32 (input_bfd, contents + relocation->r_offset);
1628 insn = (insn & 0xffff0000) | value;
1629
1630 bfd_put_32 (input_bfd, insn, contents + relocation->r_offset);
1631
1632 return bfd_reloc_ok;
1633 }
1634
1635 static reloc_howto_type *
1636 frv_reloc_type_lookup (abfd, code)
1637 bfd *abfd ATTRIBUTE_UNUSED;
1638 bfd_reloc_code_real_type code;
1639 {
1640 switch (code)
1641 {
1642 default:
1643 break;
1644
1645 case BFD_RELOC_NONE:
1646 return &elf32_frv_howto_table[ (int) R_FRV_NONE];
1647
1648 case BFD_RELOC_32:
1649 if (elf_elfheader (abfd)->e_type == ET_EXEC
1650 || elf_elfheader (abfd)->e_type == ET_DYN)
1651 return &elf32_frv_rel_32_howto;
1652 /* Fall through. */
1653 case BFD_RELOC_CTOR:
1654 return &elf32_frv_howto_table[ (int) R_FRV_32];
1655
1656 case BFD_RELOC_FRV_LABEL16:
1657 return &elf32_frv_howto_table[ (int) R_FRV_LABEL16];
1658
1659 case BFD_RELOC_FRV_LABEL24:
1660 return &elf32_frv_howto_table[ (int) R_FRV_LABEL24];
1661
1662 case BFD_RELOC_FRV_LO16:
1663 return &elf32_frv_howto_table[ (int) R_FRV_LO16];
1664
1665 case BFD_RELOC_FRV_HI16:
1666 return &elf32_frv_howto_table[ (int) R_FRV_HI16];
1667
1668 case BFD_RELOC_FRV_GPREL12:
1669 return &elf32_frv_howto_table[ (int) R_FRV_GPREL12];
1670
1671 case BFD_RELOC_FRV_GPRELU12:
1672 return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12];
1673
1674 case BFD_RELOC_FRV_GPREL32:
1675 return &elf32_frv_howto_table[ (int) R_FRV_GPREL32];
1676
1677 case BFD_RELOC_FRV_GPRELHI:
1678 return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI];
1679
1680 case BFD_RELOC_FRV_GPRELLO:
1681 return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO];
1682
1683 case BFD_RELOC_FRV_GOT12:
1684 return &elf32_frv_howto_table[ (int) R_FRV_GOT12];
1685
1686 case BFD_RELOC_FRV_GOTHI:
1687 return &elf32_frv_howto_table[ (int) R_FRV_GOTHI];
1688
1689 case BFD_RELOC_FRV_GOTLO:
1690 return &elf32_frv_howto_table[ (int) R_FRV_GOTLO];
1691
1692 case BFD_RELOC_FRV_FUNCDESC:
1693 if (elf_elfheader (abfd)->e_type == ET_EXEC
1694 || elf_elfheader (abfd)->e_type == ET_DYN)
1695 return &elf32_frv_rel_funcdesc_howto;
1696 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC];
1697
1698 case BFD_RELOC_FRV_FUNCDESC_GOT12:
1699 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12];
1700
1701 case BFD_RELOC_FRV_FUNCDESC_GOTHI:
1702 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI];
1703
1704 case BFD_RELOC_FRV_FUNCDESC_GOTLO:
1705 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO];
1706
1707 case BFD_RELOC_FRV_FUNCDESC_VALUE:
1708 if (elf_elfheader (abfd)->e_type == ET_EXEC
1709 || elf_elfheader (abfd)->e_type == ET_DYN)
1710 return &elf32_frv_rel_funcdesc_value_howto;
1711 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE];
1712
1713 case BFD_RELOC_FRV_FUNCDESC_GOTOFF12:
1714 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12];
1715
1716 case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI:
1717 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI];
1718
1719 case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO:
1720 return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO];
1721
1722 case BFD_RELOC_FRV_GOTOFF12:
1723 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12];
1724
1725 case BFD_RELOC_FRV_GOTOFFHI:
1726 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI];
1727
1728 case BFD_RELOC_FRV_GOTOFFLO:
1729 return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO];
1730
1731 case BFD_RELOC_VTABLE_INHERIT:
1732 return &elf32_frv_vtinherit_howto;
1733
1734 case BFD_RELOC_VTABLE_ENTRY:
1735 return &elf32_frv_vtentry_howto;
1736 }
1737
1738 return NULL;
1739 }
1740
1741 /* Set the howto pointer for an FRV ELF reloc. */
1742
1743 static void
1744 frv_info_to_howto_rela (abfd, cache_ptr, dst)
1745 bfd *abfd ATTRIBUTE_UNUSED;
1746 arelent *cache_ptr;
1747 Elf_Internal_Rela *dst;
1748 {
1749 unsigned int r_type;
1750
1751 r_type = ELF32_R_TYPE (dst->r_info);
1752 switch (r_type)
1753 {
1754 case R_FRV_GNU_VTINHERIT:
1755 cache_ptr->howto = &elf32_frv_vtinherit_howto;
1756 break;
1757
1758 case R_FRV_GNU_VTENTRY:
1759 cache_ptr->howto = &elf32_frv_vtentry_howto;
1760 break;
1761
1762 default:
1763 cache_ptr->howto = & elf32_frv_howto_table [r_type];
1764 break;
1765 }
1766 }
1767
1768 /* Set the howto pointer for an FRV ELF REL reloc. */
1769 static void
1770 frv_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1771 arelent *cache_ptr, Elf_Internal_Rela *dst)
1772 {
1773 unsigned int r_type;
1774
1775 r_type = ELF32_R_TYPE (dst->r_info);
1776 switch (r_type)
1777 {
1778 case R_FRV_32:
1779 cache_ptr->howto = &elf32_frv_rel_32_howto;
1780 break;
1781
1782 case R_FRV_FUNCDESC:
1783 cache_ptr->howto = &elf32_frv_rel_funcdesc_howto;
1784 break;
1785
1786 case R_FRV_FUNCDESC_VALUE:
1787 cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto;
1788 break;
1789
1790 default:
1791 cache_ptr->howto = NULL;
1792 break;
1793 }
1794 }
1795 \f
1796 /* Perform a single relocation. By default we use the standard BFD
1797 routines, but a few relocs, we have to do them ourselves. */
1798
1799 static bfd_reloc_status_type
1800 frv_final_link_relocate (howto, input_bfd, input_section, contents, rel,
1801 relocation)
1802 reloc_howto_type *howto;
1803 bfd *input_bfd;
1804 asection *input_section;
1805 bfd_byte *contents;
1806 Elf_Internal_Rela *rel;
1807 bfd_vma relocation;
1808 {
1809 return _bfd_final_link_relocate (howto, input_bfd, input_section,
1810 contents, rel->r_offset, relocation,
1811 rel->r_addend);
1812 }
1813
1814 \f
1815 /* Relocate an FRV ELF section.
1816
1817 The RELOCATE_SECTION function is called by the new ELF backend linker
1818 to handle the relocations for a section.
1819
1820 The relocs are always passed as Rela structures; if the section
1821 actually uses Rel structures, the r_addend field will always be
1822 zero.
1823
1824 This function is responsible for adjusting the section contents as
1825 necessary, and (if using Rela relocs and generating a relocatable
1826 output file) adjusting the reloc addend as necessary.
1827
1828 This function does not have to worry about setting the reloc
1829 address or the reloc symbol index.
1830
1831 LOCAL_SYMS is a pointer to the swapped in local symbols.
1832
1833 LOCAL_SECTIONS is an array giving the section in the input file
1834 corresponding to the st_shndx field of each local symbol.
1835
1836 The global hash table entry for the global symbols can be found
1837 via elf_sym_hashes (input_bfd).
1838
1839 When generating relocatable output, this function must handle
1840 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1841 going to be the section symbol corresponding to the output
1842 section, which means that the addend must be adjusted
1843 accordingly. */
1844
1845 static bfd_boolean
1846 elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section,
1847 contents, relocs, local_syms, local_sections)
1848 bfd *output_bfd ATTRIBUTE_UNUSED;
1849 struct bfd_link_info *info;
1850 bfd *input_bfd;
1851 asection *input_section;
1852 bfd_byte *contents;
1853 Elf_Internal_Rela *relocs;
1854 Elf_Internal_Sym *local_syms;
1855 asection **local_sections;
1856 {
1857 Elf_Internal_Shdr *symtab_hdr;
1858 struct elf_link_hash_entry **sym_hashes;
1859 Elf_Internal_Rela *rel;
1860 Elf_Internal_Rela *relend;
1861 unsigned isec_segment, got_segment, plt_segment, gprel_segment,
1862 check_segment[2];
1863 int silence_segment_error = !(info->shared || info->pie);
1864
1865 if (info->relocatable)
1866 return TRUE;
1867
1868 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1869 sym_hashes = elf_sym_hashes (input_bfd);
1870 relend = relocs + input_section->reloc_count;
1871
1872 isec_segment = _frv_osec_to_segment (output_bfd,
1873 input_section->output_section);
1874 if (frv_got_section (info))
1875 got_segment = _frv_osec_to_segment (output_bfd,
1876 frv_got_section (info)
1877 ->output_section);
1878 else
1879 got_segment = -1;
1880 if (frv_gotfixup_section (info))
1881 gprel_segment = _frv_osec_to_segment (output_bfd,
1882 frv_gotfixup_section (info)
1883 ->output_section);
1884 else
1885 gprel_segment = -1;
1886 if (elf_hash_table (info)->dynamic_sections_created)
1887 plt_segment = _frv_osec_to_segment (output_bfd,
1888 frv_plt_section (info)
1889 ->output_section);
1890 else
1891 plt_segment = -1;
1892
1893 for (rel = relocs; rel < relend; rel ++)
1894 {
1895 reloc_howto_type *howto;
1896 unsigned long r_symndx;
1897 Elf_Internal_Sym *sym;
1898 asection *sec;
1899 struct elf_link_hash_entry *h;
1900 bfd_vma relocation;
1901 bfd_reloc_status_type r;
1902 const char * name = NULL;
1903 int r_type;
1904 asection *osec;
1905 struct frv_pic_relocs_info *picrel;
1906 bfd_vma orig_addend = rel->r_addend;
1907
1908 r_type = ELF32_R_TYPE (rel->r_info);
1909
1910 if ( r_type == R_FRV_GNU_VTINHERIT
1911 || r_type == R_FRV_GNU_VTENTRY)
1912 continue;
1913
1914 /* This is a final link. */
1915 r_symndx = ELF32_R_SYM (rel->r_info);
1916 howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info);
1917 h = NULL;
1918 sym = NULL;
1919 sec = NULL;
1920
1921 if (r_symndx < symtab_hdr->sh_info)
1922 {
1923 sym = local_syms + r_symndx;
1924 osec = sec = local_sections [r_symndx];
1925 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1926
1927 name = bfd_elf_string_from_elf_section
1928 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1929 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1930 }
1931 else
1932 {
1933 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
1934
1935 while (h->root.type == bfd_link_hash_indirect
1936 || h->root.type == bfd_link_hash_warning)
1937 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1938
1939 name = h->root.root.string;
1940
1941 if ((h->root.type == bfd_link_hash_defined
1942 || h->root.type == bfd_link_hash_defweak)
1943 && ! FRV_SYM_LOCAL (info, h))
1944 {
1945 sec = NULL;
1946 relocation = 0;
1947 }
1948 else
1949 if (h->root.type == bfd_link_hash_defined
1950 || h->root.type == bfd_link_hash_defweak)
1951 {
1952 sec = h->root.u.def.section;
1953 relocation = (h->root.u.def.value
1954 + sec->output_section->vma
1955 + sec->output_offset);
1956 }
1957 else if (h->root.type == bfd_link_hash_undefweak)
1958 {
1959 relocation = 0;
1960 }
1961 else if (info->unresolved_syms_in_objects == RM_IGNORE
1962 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
1963 relocation = 0;
1964 else
1965 {
1966 if (! ((*info->callbacks->undefined_symbol)
1967 (info, h->root.root.string, input_bfd,
1968 input_section, rel->r_offset,
1969 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
1970 || ELF_ST_VISIBILITY (h->other)))))
1971 return FALSE;
1972 relocation = 0;
1973 }
1974 osec = sec;
1975 }
1976
1977 switch (r_type)
1978 {
1979 case R_FRV_LABEL24:
1980 case R_FRV_32:
1981 case R_FRV_GOT12:
1982 case R_FRV_GOTHI:
1983 case R_FRV_GOTLO:
1984 case R_FRV_FUNCDESC_GOT12:
1985 case R_FRV_FUNCDESC_GOTHI:
1986 case R_FRV_FUNCDESC_GOTLO:
1987 case R_FRV_GOTOFF12:
1988 case R_FRV_GOTOFFHI:
1989 case R_FRV_GOTOFFLO:
1990 case R_FRV_FUNCDESC_GOTOFF12:
1991 case R_FRV_FUNCDESC_GOTOFFHI:
1992 case R_FRV_FUNCDESC_GOTOFFLO:
1993 case R_FRV_FUNCDESC:
1994 case R_FRV_FUNCDESC_VALUE:
1995 if (h != NULL)
1996 picrel = frv_pic_relocs_info_for_global (frv_relocs_info (info),
1997 input_bfd, h,
1998 orig_addend, INSERT);
1999 else
2000 /* In order to find the entry we created before, we must
2001 use the original addend, not the one that may have been
2002 modified by _bfd_elf_rela_local_sym(). */
2003 picrel = frv_pic_relocs_info_for_local (frv_relocs_info (info),
2004 input_bfd, r_symndx,
2005 orig_addend, INSERT);
2006 if (! picrel)
2007 return FALSE;
2008
2009 if (!_frv_emit_got_relocs_plt_entries (picrel, output_bfd, info,
2010 osec, sym, rel->r_addend))
2011 {
2012 info->callbacks->warning
2013 (info, _("Dynamic relocation references symbol with nonzero addend"),
2014 name, input_bfd, input_section, rel->r_offset);
2015 return FALSE;
2016
2017 }
2018
2019 break;
2020
2021 default:
2022 picrel = NULL;
2023 if (h && ! FRV_SYM_LOCAL (info, h))
2024 {
2025 info->callbacks->warning
2026 (info, _("relocation references symbol not defined in the module"),
2027 name, input_bfd, input_section, rel->r_offset);
2028 return FALSE;
2029 }
2030 break;
2031 }
2032
2033 switch (r_type)
2034 {
2035 case R_FRV_LABEL24:
2036 check_segment[0] = isec_segment;
2037 if (picrel->plt)
2038 {
2039 relocation = frv_plt_section (info)->output_section->vma
2040 + frv_plt_section (info)->output_offset
2041 + picrel->plt_entry;
2042 check_segment[1] = plt_segment;
2043 }
2044 /* We don't want to warn on calls to undefined weak symbols,
2045 as calls to them must be protected by non-NULL tests
2046 anyway, and unprotected calls would invoke undefined
2047 behavior. */
2048 else if (picrel->symndx == -1
2049 && picrel->d.h->root.type == bfd_link_hash_undefweak)
2050 check_segment[1] = check_segment[0];
2051 else
2052 check_segment[1] = sec
2053 ? _frv_osec_to_segment (output_bfd, sec->output_section)
2054 : (unsigned)-1;
2055 break;
2056
2057 case R_FRV_GOT12:
2058 case R_FRV_GOTHI:
2059 case R_FRV_GOTLO:
2060 relocation = picrel->got_entry;
2061 check_segment[0] = check_segment[1] = got_segment;
2062 break;
2063
2064 case R_FRV_FUNCDESC_GOT12:
2065 case R_FRV_FUNCDESC_GOTHI:
2066 case R_FRV_FUNCDESC_GOTLO:
2067 relocation = picrel->fdgot_entry;
2068 check_segment[0] = check_segment[1] = got_segment;
2069 break;
2070
2071 case R_FRV_GOTOFFHI:
2072 case R_FRV_GOTOFF12:
2073 case R_FRV_GOTOFFLO:
2074 relocation -= frv_got_section (info)->output_section->vma
2075 + frv_got_section (info)->output_offset
2076 + frv_got_initial_offset (info);
2077 check_segment[0] = got_segment;
2078 check_segment[1] = sec
2079 ? _frv_osec_to_segment (output_bfd, sec->output_section)
2080 : (unsigned)-1;
2081 break;
2082
2083 case R_FRV_FUNCDESC_GOTOFF12:
2084 case R_FRV_FUNCDESC_GOTOFFHI:
2085 case R_FRV_FUNCDESC_GOTOFFLO:
2086 relocation = picrel->fd_entry;
2087 check_segment[0] = check_segment[1] = got_segment;
2088 break;
2089
2090 case R_FRV_FUNCDESC:
2091 {
2092 int dynindx;
2093 bfd_vma addend = rel->r_addend;
2094
2095 if (! (h && h->root.type == bfd_link_hash_undefweak
2096 && FRV_SYM_LOCAL (info, h)))
2097 {
2098 /* If the symbol is dynamic and there may be dynamic
2099 symbol resolution because we are or are linked with a
2100 shared library, emit a FUNCDESC relocation such that
2101 the dynamic linker will allocate the function
2102 descriptor. If the symbol needs a non-local function
2103 descriptor but binds locally (e.g., its visibility is
2104 protected, emit a dynamic relocation decayed to
2105 section+offset. */
2106 if (h && ! FRV_FUNCDESC_LOCAL (info, h)
2107 && FRV_SYM_LOCAL (info, h)
2108 && !(info->executable && !info->pie))
2109 {
2110 dynindx = elf_section_data (h->root.u.def.section
2111 ->output_section)->dynindx;
2112 addend += h->root.u.def.section->output_offset
2113 + h->root.u.def.value;
2114 }
2115 else if (h && ! FRV_FUNCDESC_LOCAL (info, h))
2116 {
2117 if (addend)
2118 {
2119 info->callbacks->warning
2120 (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"),
2121 name, input_bfd, input_section, rel->r_offset);
2122 return FALSE;
2123 }
2124 dynindx = h->dynindx;
2125 }
2126 else
2127 {
2128 /* Otherwise, we know we have a private function
2129 descriptor, so reference it directly. */
2130 BFD_ASSERT (picrel->privfd);
2131 r_type = R_FRV_32;
2132 dynindx = elf_section_data (frv_got_section (info)
2133 ->output_section)->dynindx;
2134 addend = frv_got_section (info)->output_offset
2135 + frv_got_initial_offset (info)
2136 + picrel->fd_entry;
2137 }
2138
2139 /* If there is room for dynamic symbol resolution, emit
2140 the dynamic relocation. However, if we're linking an
2141 executable at a fixed location, we won't have emitted a
2142 dynamic symbol entry for the got section, so idx will
2143 be zero, which means we can and should compute the
2144 address of the private descriptor ourselves. */
2145 if (info->executable && !info->pie
2146 && (!h || FRV_FUNCDESC_LOCAL (info, h)))
2147 {
2148 addend += frv_got_section (info)->output_section->vma;
2149 if ((bfd_get_section_flags (output_bfd,
2150 input_section->output_section)
2151 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2152 {
2153 if (_frv_osec_readonly_p (output_bfd,
2154 input_section->output_section))
2155 {
2156 info->callbacks->warning
2157 (info,
2158 _("cannot emit fixups in read-only section"),
2159 name, input_bfd, input_section, rel->r_offset);
2160 return FALSE;
2161 }
2162 _frv_add_rofixup (output_bfd,
2163 frv_gotfixup_section (info),
2164 _bfd_elf_section_offset
2165 (output_bfd, info,
2166 input_section, rel->r_offset)
2167 + input_section->output_section->vma
2168 + input_section->output_offset,
2169 picrel);
2170 }
2171 }
2172 else if ((bfd_get_section_flags (output_bfd,
2173 input_section->output_section)
2174 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2175 {
2176 if (_frv_osec_readonly_p (output_bfd,
2177 input_section->output_section))
2178 {
2179 info->callbacks->warning
2180 (info,
2181 _("cannot emit dynamic relocations in read-only section"),
2182 name, input_bfd, input_section, rel->r_offset);
2183 return FALSE;
2184 }
2185 _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info),
2186 _bfd_elf_section_offset
2187 (output_bfd, info,
2188 input_section, rel->r_offset)
2189 + input_section->output_section->vma
2190 + input_section->output_offset,
2191 r_type, dynindx, addend, picrel);
2192 }
2193 }
2194
2195 /* We want the addend in-place because dynamic
2196 relocations are REL. Setting relocation to it should
2197 arrange for it to be installed. */
2198 relocation = addend - rel->r_addend;
2199 }
2200 check_segment[0] = check_segment[1] = got_segment;
2201 break;
2202
2203 case R_FRV_32:
2204 case R_FRV_FUNCDESC_VALUE:
2205 {
2206 int dynindx;
2207 bfd_vma addend = rel->r_addend;
2208
2209 /* If the symbol is dynamic but binds locally, use
2210 section+offset. */
2211 if (h && ! FRV_SYM_LOCAL (info, h))
2212 {
2213 if (addend && r_type == R_FRV_FUNCDESC_VALUE)
2214 {
2215 info->callbacks->warning
2216 (info, _("R_FRV_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2217 name, input_bfd, input_section, rel->r_offset);
2218 return FALSE;
2219 }
2220 dynindx = h->dynindx;
2221 }
2222 else
2223 {
2224 if (h)
2225 addend += h->root.u.def.value;
2226 else
2227 addend += sym->st_value;
2228 if (osec)
2229 addend += osec->output_offset;
2230 if (osec && osec->output_section
2231 && ! bfd_is_abs_section (osec->output_section)
2232 && ! bfd_is_und_section (osec->output_section))
2233 dynindx = elf_section_data (osec->output_section)->dynindx;
2234 else
2235 dynindx = 0;
2236 }
2237
2238 /* If we're linking an executable at a fixed address, we
2239 can omit the dynamic relocation as long as the symbol
2240 is defined in the current link unit (which is implied
2241 by its output section not being NULL). */
2242 if (info->executable && !info->pie
2243 && (!h || FRV_SYM_LOCAL (info, h)))
2244 {
2245 if (osec)
2246 addend += osec->output_section->vma;
2247 if ((elf_elfheader (input_bfd)->e_flags & EF_FRV_FDPIC)
2248 && (bfd_get_section_flags (output_bfd,
2249 input_section->output_section)
2250 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2251 {
2252 if (_frv_osec_readonly_p (output_bfd,
2253 input_section->output_section))
2254 {
2255 info->callbacks->warning
2256 (info,
2257 _("cannot emit fixups in read-only section"),
2258 name, input_bfd, input_section, rel->r_offset);
2259 return FALSE;
2260 }
2261 if (!h || h->root.type != bfd_link_hash_undefweak)
2262 {
2263 _frv_add_rofixup (output_bfd,
2264 frv_gotfixup_section (info),
2265 _bfd_elf_section_offset
2266 (output_bfd, info,
2267 input_section, rel->r_offset)
2268 + input_section->output_section->vma
2269 + input_section->output_offset,
2270 picrel);
2271 if (r_type == R_FRV_FUNCDESC_VALUE)
2272 _frv_add_rofixup
2273 (output_bfd,
2274 frv_gotfixup_section (info),
2275 _bfd_elf_section_offset
2276 (output_bfd, info,
2277 input_section, rel->r_offset)
2278 + input_section->output_section->vma
2279 + input_section->output_offset + 4, picrel);
2280 }
2281 }
2282 }
2283 else
2284 {
2285 if ((bfd_get_section_flags (output_bfd,
2286 input_section->output_section)
2287 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2288 {
2289 if (_frv_osec_readonly_p (output_bfd,
2290 input_section->output_section))
2291 {
2292 info->callbacks->warning
2293 (info,
2294 _("cannot emit dynamic relocations in read-only section"),
2295 name, input_bfd, input_section, rel->r_offset);
2296 return FALSE;
2297 }
2298 _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info),
2299 _bfd_elf_section_offset
2300 (output_bfd, info,
2301 input_section, rel->r_offset)
2302 + input_section->output_section->vma
2303 + input_section->output_offset,
2304 r_type, dynindx, addend, picrel);
2305 }
2306 /* We want the addend in-place because dynamic
2307 relocations are REL. Setting relocation to it
2308 should arrange for it to be installed. */
2309 relocation = addend - rel->r_addend;
2310 }
2311
2312 if (r_type == R_FRV_FUNCDESC_VALUE)
2313 {
2314 /* If we've omitted the dynamic relocation, just emit
2315 the fixed addresses of the symbol and of the local
2316 GOT base offset. */
2317 if (info->executable && !info->pie
2318 && (!h || FRV_SYM_LOCAL (info, h)))
2319 bfd_put_32 (output_bfd,
2320 frv_got_section (info)->output_section->vma
2321 + frv_got_section (info)->output_offset
2322 + frv_got_initial_offset (info),
2323 contents + rel->r_offset + 4);
2324 else
2325 /* A function descriptor used for lazy or local
2326 resolving is initialized such that its high word
2327 contains the output section index in which the
2328 PLT entries are located, and the low word
2329 contains the offset of the lazy PLT entry entry
2330 point into that section. */
2331 bfd_put_32 (output_bfd,
2332 h && ! FRV_SYM_LOCAL (info, h)
2333 ? 0
2334 : _frv_osec_to_segment (output_bfd,
2335 sec->output_section),
2336 contents + rel->r_offset + 4);
2337 }
2338 }
2339 check_segment[0] = check_segment[1] = got_segment;
2340 break;
2341
2342 case R_FRV_GPREL12:
2343 case R_FRV_GPRELU12:
2344 case R_FRV_GPREL32:
2345 case R_FRV_GPRELHI:
2346 case R_FRV_GPRELLO:
2347 check_segment[0] = gprel_segment;
2348 check_segment[1] = sec
2349 ? _frv_osec_to_segment (output_bfd, sec->output_section)
2350 : (unsigned)-1;
2351 break;
2352
2353 default:
2354 check_segment[0] = isec_segment;
2355 check_segment[1] = sec
2356 ? _frv_osec_to_segment (output_bfd, sec->output_section)
2357 : (unsigned)-1;
2358 break;
2359 }
2360
2361 if (check_segment[0] != check_segment[1]
2362 && (elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC))
2363 {
2364 #if 1
2365 /* This helps catch problems in GCC while we can't do more
2366 than static linking. The idea is to test whether the
2367 input file basename is crt0.o only once. */
2368 if (silence_segment_error == 1)
2369 silence_segment_error =
2370 (strlen (input_bfd->filename) == 6
2371 && strcmp (input_bfd->filename, "crt0.o") == 0)
2372 || (strlen (input_bfd->filename) > 6
2373 && strcmp (input_bfd->filename
2374 + strlen (input_bfd->filename) - 7,
2375 "/crt0.o") == 0)
2376 ? -1 : 0;
2377 #endif
2378 if (!silence_segment_error
2379 /* We don't want duplicate errors for undefined
2380 symbols. */
2381 && !(picrel && picrel->symndx == -1
2382 && picrel->d.h->root.type == bfd_link_hash_undefined))
2383 info->callbacks->warning
2384 (info,
2385 (info->shared || info->pie)
2386 ? _("relocations between different segments are not supported")
2387 : _("warning: relocation references a different segment"),
2388 name, input_bfd, input_section, rel->r_offset);
2389 if (!silence_segment_error && (info->shared || info->pie))
2390 return FALSE;
2391 elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC;
2392 }
2393
2394 switch (r_type)
2395 {
2396 case R_FRV_GOTOFFHI:
2397 /* We need the addend to be applied before we shift the
2398 value right. */
2399 relocation += rel->r_addend;
2400 /* Fall through. */
2401 case R_FRV_GOTHI:
2402 case R_FRV_FUNCDESC_GOTHI:
2403 case R_FRV_FUNCDESC_GOTOFFHI:
2404 relocation >>= 16;
2405 /* Fall through. */
2406
2407 case R_FRV_GOTLO:
2408 case R_FRV_FUNCDESC_GOTLO:
2409 case R_FRV_GOTOFFLO:
2410 case R_FRV_FUNCDESC_GOTOFFLO:
2411 relocation &= 0xffff;
2412 break;
2413
2414 default:
2415 break;
2416 }
2417
2418 switch (r_type)
2419 {
2420 case R_FRV_LABEL24:
2421 if (! picrel->plt)
2422 break;
2423 /* Fall through. */
2424
2425 /* When referencing a GOT entry, a function descriptor or a
2426 PLT, we don't want the addend to apply to the reference,
2427 but rather to the referenced symbol. The actual entry
2428 will have already been created taking the addend into
2429 account, so cancel it out here. */
2430 case R_FRV_GOT12:
2431 case R_FRV_GOTHI:
2432 case R_FRV_GOTLO:
2433 case R_FRV_FUNCDESC_GOT12:
2434 case R_FRV_FUNCDESC_GOTHI:
2435 case R_FRV_FUNCDESC_GOTLO:
2436 case R_FRV_FUNCDESC_GOTOFF12:
2437 case R_FRV_FUNCDESC_GOTOFFHI:
2438 case R_FRV_FUNCDESC_GOTOFFLO:
2439 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12
2440 here, since we do want to apply the addend to the others.
2441 Note that we've applied the addend to GOTOFFHI before we
2442 shifted it right. */
2443 case R_FRV_GOTOFFHI:
2444 relocation -= rel->r_addend;
2445 break;
2446
2447 default:
2448 break;
2449 }
2450
2451 if (r_type == R_FRV_HI16)
2452 r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation);
2453
2454 else if (r_type == R_FRV_LO16)
2455 r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation);
2456
2457 else if (r_type == R_FRV_LABEL24)
2458 r = elf32_frv_relocate_label24 (input_bfd, input_section, rel,
2459 contents, relocation);
2460
2461 else if (r_type == R_FRV_GPREL12)
2462 r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel,
2463 contents, relocation);
2464
2465 else if (r_type == R_FRV_GPRELU12)
2466 r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel,
2467 contents, relocation);
2468
2469 else if (r_type == R_FRV_GPRELLO)
2470 r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel,
2471 contents, relocation);
2472
2473 else if (r_type == R_FRV_GPRELHI)
2474 r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel,
2475 contents, relocation);
2476
2477 else
2478 r = frv_final_link_relocate (howto, input_bfd, input_section, contents,
2479 rel, relocation);
2480
2481 if (r != bfd_reloc_ok)
2482 {
2483 const char * msg = (const char *) NULL;
2484
2485 switch (r)
2486 {
2487 case bfd_reloc_overflow:
2488 r = info->callbacks->reloc_overflow
2489 (info, name, howto->name, (bfd_vma) 0,
2490 input_bfd, input_section, rel->r_offset);
2491 break;
2492
2493 case bfd_reloc_undefined:
2494 r = info->callbacks->undefined_symbol
2495 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
2496 break;
2497
2498 case bfd_reloc_outofrange:
2499 msg = _("internal error: out of range error");
2500 break;
2501
2502 case bfd_reloc_notsupported:
2503 msg = _("internal error: unsupported relocation error");
2504 break;
2505
2506 case bfd_reloc_dangerous:
2507 msg = _("internal error: dangerous relocation");
2508 break;
2509
2510 default:
2511 msg = _("internal error: unknown error");
2512 break;
2513 }
2514
2515 if (msg)
2516 r = info->callbacks->warning
2517 (info, msg, name, input_bfd, input_section, rel->r_offset);
2518
2519 if (! r)
2520 return FALSE;
2521 }
2522 }
2523
2524 return TRUE;
2525 }
2526 \f
2527 /* Return the section that should be marked against GC for a given
2528 relocation. */
2529
2530 static asection *
2531 elf32_frv_gc_mark_hook (sec, info, rel, h, sym)
2532 asection *sec;
2533 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2534 Elf_Internal_Rela *rel;
2535 struct elf_link_hash_entry *h;
2536 Elf_Internal_Sym *sym;
2537 {
2538 if (h != NULL)
2539 {
2540 switch (ELF32_R_TYPE (rel->r_info))
2541 {
2542 case R_FRV_GNU_VTINHERIT:
2543 case R_FRV_GNU_VTENTRY:
2544 break;
2545
2546 default:
2547 switch (h->root.type)
2548 {
2549 default:
2550 break;
2551
2552 case bfd_link_hash_defined:
2553 case bfd_link_hash_defweak:
2554 return h->root.u.def.section;
2555
2556 case bfd_link_hash_common:
2557 return h->root.u.c.p->section;
2558 }
2559 }
2560 }
2561 else
2562 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
2563
2564 return NULL;
2565 }
2566
2567 /* Update the got entry reference counts for the section being removed. */
2568
2569 static bfd_boolean
2570 elf32_frv_gc_sweep_hook (abfd, info, sec, relocs)
2571 bfd *abfd ATTRIBUTE_UNUSED;
2572 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2573 asection *sec ATTRIBUTE_UNUSED;
2574 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
2575 {
2576 return TRUE;
2577 }
2578
2579 \f
2580 /* Hook called by the linker routine which adds symbols from an object
2581 file. We use it to put .comm items in .scomm, and not .comm. */
2582
2583 static bfd_boolean
2584 elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2585 bfd *abfd;
2586 struct bfd_link_info *info;
2587 Elf_Internal_Sym *sym;
2588 const char **namep ATTRIBUTE_UNUSED;
2589 flagword *flagsp ATTRIBUTE_UNUSED;
2590 asection **secp;
2591 bfd_vma *valp;
2592 {
2593 if (sym->st_shndx == SHN_COMMON
2594 && !info->relocatable
2595 && (int)sym->st_size <= (int)bfd_get_gp_size (abfd))
2596 {
2597 /* Common symbols less than or equal to -G nn bytes are
2598 automatically put into .sbss. */
2599
2600 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
2601
2602 if (scomm == NULL)
2603 {
2604 scomm = bfd_make_section (abfd, ".scommon");
2605 if (scomm == NULL
2606 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
2607 | SEC_IS_COMMON
2608 | SEC_LINKER_CREATED)))
2609 return FALSE;
2610 }
2611
2612 *secp = scomm;
2613 *valp = sym->st_size;
2614 }
2615
2616 return TRUE;
2617 }
2618 /* Create a .got section, as well as its additional info field. This
2619 is almost entirely copied from
2620 elflink.c:_bfd_elf_create_got_section(). */
2621
2622 static bfd_boolean
2623 _frv_create_got_section (bfd *abfd, struct bfd_link_info *info)
2624 {
2625 flagword flags;
2626 asection *s;
2627 struct elf_link_hash_entry *h;
2628 struct bfd_link_hash_entry *bh;
2629 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2630 int ptralign;
2631
2632 /* This function may be called more than once. */
2633 s = bfd_get_section_by_name (abfd, ".got");
2634 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
2635 return TRUE;
2636
2637 /* Machine specific: although pointers are 32-bits wide, we want the
2638 GOT to be aligned to a 64-bit boundary, such that function
2639 descriptors in it can be accessed with 64-bit loads and
2640 stores. */
2641 ptralign = 3;
2642
2643 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2644 | SEC_LINKER_CREATED);
2645
2646 s = bfd_make_section (abfd, ".got");
2647 if (s == NULL
2648 || !bfd_set_section_flags (abfd, s, flags)
2649 || !bfd_set_section_alignment (abfd, s, ptralign))
2650 return FALSE;
2651
2652 if (bed->want_got_plt)
2653 {
2654 s = bfd_make_section (abfd, ".got.plt");
2655 if (s == NULL
2656 || !bfd_set_section_flags (abfd, s, flags)
2657 || !bfd_set_section_alignment (abfd, s, ptralign))
2658 return FALSE;
2659 }
2660
2661 if (bed->want_got_sym)
2662 {
2663 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
2664 (or .got.plt) section. We don't do this in the linker script
2665 because we don't want to define the symbol if we are not creating
2666 a global offset table. */
2667 bh = NULL;
2668 if (!(_bfd_generic_link_add_one_symbol
2669 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
2670 bed->got_symbol_offset, (const char *) NULL, FALSE,
2671 bed->collect, &bh)))
2672 return FALSE;
2673 h = (struct elf_link_hash_entry *) bh;
2674 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2675 h->type = STT_OBJECT;
2676
2677 /* Machine-specific: we want the symbol for executables as
2678 well. */
2679 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2680 return FALSE;
2681
2682 elf_hash_table (info)->hgot = h;
2683 }
2684
2685 /* The first bit of the global offset table is the header. */
2686 s->_raw_size += bed->got_header_size + bed->got_symbol_offset;
2687
2688 /* This is the machine-specific part. Create and initialize section
2689 data for the got. */
2690 frv_got_section (info) = s;
2691 frv_relocs_info (info) = htab_try_create (1, frv_pic_relocs_info_hash,
2692 frv_pic_relocs_info_eq,
2693 (htab_del) NULL);
2694 if (! frv_relocs_info (info))
2695 return FALSE;
2696
2697 s = bfd_make_section (abfd, ".rel.got");
2698 if (s == NULL
2699 || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY))
2700 || ! bfd_set_section_alignment (abfd, s, 2))
2701 return FALSE;
2702
2703 frv_gotrel_section (info) = s;
2704
2705 /* Machine-specific. */
2706 s = bfd_make_section (abfd, ".rofixup");
2707 if (s == NULL
2708 || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY))
2709 || ! bfd_set_section_alignment (abfd, s, 2))
2710 return FALSE;
2711
2712 frv_gotfixup_section (info) = s;
2713
2714 /* Define _gp in .rofixup, for FDPIC. If it turns out that
2715 we're linking with a different linker script, the linker script
2716 will override it. */
2717 bh = NULL;
2718 if (!(_bfd_generic_link_add_one_symbol
2719 (info, abfd, "_gp", BSF_GLOBAL, s, -2048, (const char *) NULL, FALSE,
2720 bed->collect, &bh)))
2721 return FALSE;
2722 h = (struct elf_link_hash_entry *) bh;
2723 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2724 h->type = STT_OBJECT;
2725
2726 /* Machine-specific: we want the symbol for executables as well. */
2727 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2728 return FALSE;
2729
2730 return TRUE;
2731 }
2732
2733 /* Make sure the got and plt sections exist, and that our pointers in
2734 the link hash table point to them. */
2735
2736 static bfd_boolean
2737 elf32_frv_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2738 {
2739 /* This is mostly copied from
2740 elflink.c:_bfd_elf_create_dynamic_sections(). */
2741 flagword flags, pltflags;
2742 asection *s;
2743 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2744
2745 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2746 .rel[a].bss sections. */
2747
2748 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2749 | SEC_LINKER_CREATED);
2750
2751 pltflags = flags;
2752 pltflags |= SEC_CODE;
2753 if (bed->plt_not_loaded)
2754 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
2755 if (bed->plt_readonly)
2756 pltflags |= SEC_READONLY;
2757
2758 s = bfd_make_section (abfd, ".plt");
2759 if (s == NULL
2760 || ! bfd_set_section_flags (abfd, s, pltflags)
2761 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2762 return FALSE;
2763 /* FRV-specific: remember it. */
2764 frv_plt_section (info) = s;
2765
2766 if (bed->want_plt_sym)
2767 {
2768 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2769 .plt section. */
2770 struct elf_link_hash_entry *h;
2771 struct bfd_link_hash_entry *bh = NULL;
2772
2773 if (! (_bfd_generic_link_add_one_symbol
2774 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL,
2775 FALSE, get_elf_backend_data (abfd)->collect, &bh)))
2776 return FALSE;
2777 h = (struct elf_link_hash_entry *) bh;
2778 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2779 h->type = STT_OBJECT;
2780
2781 if (! info->executable
2782 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2783 return FALSE;
2784 }
2785
2786 /* FRV-specific: we want rel relocations for the plt. */
2787 s = bfd_make_section (abfd, ".rel.plt");
2788 if (s == NULL
2789 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2790 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
2791 return FALSE;
2792 /* FRV-specific: remember it. */
2793 frv_pltrel_section (info) = s;
2794
2795 /* FRV-specific: we want to create the GOT in the FRV way. */
2796 if (! _frv_create_got_section (abfd, info))
2797 return FALSE;
2798
2799 /* FRV-specific: make sure we created everything we wanted. */
2800 BFD_ASSERT (frv_got_section (info) && frv_gotrel_section (info)
2801 && frv_gotfixup_section (info)
2802 && frv_plt_section (info) && frv_pltrel_section (info));
2803
2804 if (bed->want_dynbss)
2805 {
2806 /* The .dynbss section is a place to put symbols which are defined
2807 by dynamic objects, are referenced by regular objects, and are
2808 not functions. We must allocate space for them in the process
2809 image and use a R_*_COPY reloc to tell the dynamic linker to
2810 initialize them at run time. The linker script puts the .dynbss
2811 section into the .bss section of the final image. */
2812 s = bfd_make_section (abfd, ".dynbss");
2813 if (s == NULL
2814 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
2815 return FALSE;
2816
2817 /* The .rel[a].bss section holds copy relocs. This section is not
2818 normally needed. We need to create it here, though, so that the
2819 linker will map it to an output section. We can't just create it
2820 only if we need it, because we will not know whether we need it
2821 until we have seen all the input files, and the first time the
2822 main linker code calls BFD after examining all the input files
2823 (size_dynamic_sections) the input sections have already been
2824 mapped to the output sections. If the section turns out not to
2825 be needed, we can discard it later. We will never need this
2826 section when generating a shared object, since they do not use
2827 copy relocs. */
2828 if (! info->shared)
2829 {
2830 s = bfd_make_section (abfd,
2831 (bed->default_use_rela_p
2832 ? ".rela.bss" : ".rel.bss"));
2833 if (s == NULL
2834 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2835 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
2836 return FALSE;
2837 }
2838 }
2839
2840 return TRUE;
2841 }
2842
2843 /* The name of the dynamic interpreter. This is put in the .interp
2844 section. */
2845
2846 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2847
2848 #define DEFAULT_STACK_SIZE 0x20000
2849
2850 /* This structure is used to collect the number of entries present in
2851 each addressable range of the got. */
2852 struct _frv_dynamic_got_info
2853 {
2854 /* Several bits of information about the current link. */
2855 struct bfd_link_info *info;
2856 /* Total size needed for GOT entries within the 12-, 16- or 32-bit
2857 ranges. */
2858 bfd_vma got12, gotlos, gothilo;
2859 /* Total size needed for function descriptor entries within the 12-,
2860 16- or 32-bit ranges. */
2861 bfd_vma fd12, fdlos, fdhilo;
2862 /* Total size needed function descriptor entries referenced in PLT
2863 entries, that would be profitable to place in offsets close to
2864 the PIC register. */
2865 bfd_vma fdplt;
2866 /* Total size needed by lazy PLT entries. */
2867 bfd_vma lzplt;
2868 /* Number of relocations carried over from input object files. */
2869 unsigned long relocs;
2870 /* Number of fixups introduced by relocations in input object files. */
2871 unsigned long fixups;
2872 };
2873
2874 /* Compute the total GOT size required by each symbol in each range.
2875 Symbols may require up to 4 words in the GOT: an entry pointing to
2876 the symbol, an entry pointing to its function descriptor, and a
2877 private function descriptors taking two words. */
2878
2879 static int
2880 _frv_count_got_plt_entries (void **entryp, void *dinfo_)
2881 {
2882 struct frv_pic_relocs_info *entry = *entryp;
2883 struct _frv_dynamic_got_info *dinfo = dinfo_;
2884 unsigned relocs = 0, fixups = 0;
2885
2886 /* Allocate space for a GOT entry pointing to the symbol. */
2887 if (entry->got12)
2888 dinfo->got12 += 4;
2889 else if (entry->gotlos)
2890 dinfo->gotlos += 4;
2891 else if (entry->gothilo)
2892 dinfo->gothilo += 4;
2893 else
2894 entry->relocs32--;
2895 entry->relocs32++;
2896
2897 /* Allocate space for a GOT entry pointing to the function
2898 descriptor. */
2899 if (entry->fdgot12)
2900 dinfo->got12 += 4;
2901 else if (entry->fdgotlos)
2902 dinfo->gotlos += 4;
2903 else if (entry->fdgothilo)
2904 dinfo->gothilo += 4;
2905 else
2906 entry->relocsfd--;
2907 entry->relocsfd++;
2908
2909 /* Decide whether we need a PLT entry, a function descriptor in the
2910 GOT, and a lazy PLT entry for this symbol. */
2911 entry->plt = entry->call
2912 && entry->symndx == -1 && ! FRV_SYM_LOCAL (dinfo->info, entry->d.h)
2913 && elf_hash_table (dinfo->info)->dynamic_sections_created;
2914 entry->privfd = entry->plt
2915 || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo
2916 || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo)
2917 && (entry->symndx != -1
2918 || FRV_FUNCDESC_LOCAL (dinfo->info, entry->d.h)));
2919 entry->lazyplt = entry->privfd
2920 && entry->symndx == -1 && ! FRV_SYM_LOCAL (dinfo->info, entry->d.h)
2921 && ! (dinfo->info->flags & DF_BIND_NOW)
2922 && elf_hash_table (dinfo->info)->dynamic_sections_created;
2923
2924 /* Allocate space for a function descriptor. */
2925 if (entry->fdgoff12)
2926 dinfo->fd12 += 8;
2927 else if (entry->fdgofflos)
2928 dinfo->fdlos += 8;
2929 else if (entry->privfd && entry->plt)
2930 dinfo->fdplt += 8;
2931 else if (entry->privfd)
2932 dinfo->fdhilo += 8;
2933 else
2934 entry->relocsfdv--;
2935 entry->relocsfdv++;
2936
2937 if (entry->lazyplt)
2938 dinfo->lzplt += 8;
2939
2940 if (!dinfo->info->executable || dinfo->info->pie)
2941 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv;
2942 else
2943 {
2944 if (entry->symndx != -1 || FRV_SYM_LOCAL (dinfo->info, entry->d.h))
2945 {
2946 if (entry->symndx != -1
2947 || entry->d.h->root.type != bfd_link_hash_undefweak)
2948 fixups += entry->relocs32 + 2 * entry->relocsfdv;
2949 }
2950 else
2951 relocs += entry->relocs32 + entry->relocsfdv;
2952
2953 if (entry->symndx != -1 || FRV_FUNCDESC_LOCAL (dinfo->info, entry->d.h))
2954 {
2955 if (entry->symndx != -1
2956 || entry->d.h->root.type != bfd_link_hash_undefweak)
2957 fixups += entry->relocsfd;
2958 }
2959 else
2960 relocs += entry->relocsfd;
2961 }
2962
2963 entry->dynrelocs += relocs;
2964 entry->fixups += fixups;
2965 dinfo->relocs += relocs;
2966 dinfo->fixups += fixups;
2967
2968 return 1;
2969 }
2970
2971 /* This structure is used to assign offsets to got entries, function
2972 descriptors, plt entries and lazy plt entries. */
2973
2974 struct _frv_dynamic_got_plt_info
2975 {
2976 /* Summary information collected with _frv_count_got_plt_entries. */
2977 struct _frv_dynamic_got_info g;
2978
2979 /* For each addressable range, we record a MAX (positive) and MIN
2980 (negative) value. CUR is used to assign got entries, and it's
2981 incremented from an initial positive value to MAX, then from MIN
2982 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
2983 assign function descriptors, and it's decreased from an initial
2984 non-positive value to MIN, then from MAX down to CUR (unless CUR
2985 wraps around first). All of MIN, MAX, CUR and FDCUR always point
2986 to even words. ODD, if non-zero, indicates an odd word to be
2987 used for the next got entry, otherwise CUR is used and
2988 incremented by a pair of words, wrapping around when it reaches
2989 MAX. FDCUR is decremented (and wrapped) before the next function
2990 descriptor is chosen. FDPLT indicates the number of remaining
2991 slots that can be used for function descriptors used only by PLT
2992 entries. */
2993 struct _frv_dynamic_got_alloc_data
2994 {
2995 bfd_signed_vma max, cur, odd, fdcur, min;
2996 bfd_vma fdplt;
2997 } got12, gotlos, gothilo;
2998 };
2999
3000 /* Determine the positive and negative ranges to be used by each
3001 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3002 double-word boundary, are the minimum (negative) and maximum
3003 (positive) GOT offsets already used by previous ranges, except for
3004 an ODD entry that may have been left behind. GOT and FD indicate
3005 the size of GOT entries and function descriptors that must be
3006 placed within the range from -WRAP to WRAP. If there's room left,
3007 up to FDPLT bytes should be reserved for additional function
3008 descriptors. */
3009
3010 inline static bfd_signed_vma
3011 _frv_compute_got_alloc_data (struct _frv_dynamic_got_alloc_data *gad,
3012 bfd_signed_vma fdcur,
3013 bfd_signed_vma odd,
3014 bfd_signed_vma cur,
3015 bfd_vma got,
3016 bfd_vma fd,
3017 bfd_vma fdplt,
3018 bfd_vma wrap)
3019 {
3020 bfd_signed_vma wrapmin = -wrap;
3021
3022 /* Start at the given initial points. */
3023 gad->fdcur = fdcur;
3024 gad->cur = cur;
3025
3026 /* If we had an incoming odd word and we have any got entries that
3027 are going to use it, consume it, otherwise leave gad->odd at
3028 zero. We might force gad->odd to zero and return the incoming
3029 odd such that it is used by the next range, but then GOT entries
3030 might appear to be out of order and we wouldn't be able to
3031 shorten the GOT by one word if it turns out to end with an
3032 unpaired GOT entry. */
3033 if (odd && got)
3034 {
3035 gad->odd = odd;
3036 got -= 4;
3037 odd = 0;
3038 }
3039 else
3040 gad->odd = 0;
3041
3042 /* If we're left with an unpaired GOT entry, compute its location
3043 such that we can return it. Otherwise, if got doesn't require an
3044 odd number of words here, either odd was already zero in the
3045 block above, or it was set to zero because got was non-zero, or
3046 got was already zero. In the latter case, we want the value of
3047 odd to carry over to the return statement, so we don't want to
3048 reset odd unless the condition below is true. */
3049 if (got & 4)
3050 {
3051 odd = cur + got;
3052 got += 4;
3053 }
3054
3055 /* Compute the tentative boundaries of this range. */
3056 gad->max = cur + got;
3057 gad->min = fdcur - fd;
3058 gad->fdplt = 0;
3059
3060 /* If function descriptors took too much space, wrap some of them
3061 around. */
3062 if (gad->min < wrapmin)
3063 {
3064 gad->max += wrapmin - gad->min;
3065 gad->min = wrapmin;
3066 }
3067 /* If there is space left and we have function descriptors
3068 referenced in PLT entries that could take advantage of shorter
3069 offsets, place them here. */
3070 else if (fdplt && gad->min > wrapmin)
3071 {
3072 bfd_vma fds;
3073 if ((bfd_vma) (gad->min - wrapmin) < fdplt)
3074 fds = gad->min - wrapmin;
3075 else
3076 fds = fdplt;
3077
3078 fdplt -= fds;
3079 gad->min -= fds;
3080 gad->fdplt += fds;
3081 }
3082
3083 /* If GOT entries took too much space, wrap some of them around.
3084 This may well cause gad->min to become lower than wrapmin. This
3085 will cause a relocation overflow later on, so we don't have to
3086 report it here . */
3087 if ((bfd_vma) gad->max > wrap)
3088 {
3089 gad->min -= gad->max - wrap;
3090 gad->max = wrap;
3091 }
3092 /* If there is more space left, try to place some more function
3093 descriptors for PLT entries. */
3094 else if (fdplt && (bfd_vma) gad->max < wrap)
3095 {
3096 bfd_vma fds;
3097 if ((bfd_vma) (wrap - gad->max) < fdplt)
3098 fds = wrap - gad->max;
3099 else
3100 fds = fdplt;
3101
3102 fdplt -= fds;
3103 gad->max += fds;
3104 gad->fdplt += fds;
3105 }
3106
3107 /* If odd was initially computed as an offset past the wrap point,
3108 wrap it around. */
3109 if (odd > gad->max)
3110 odd = gad->min + odd - gad->max;
3111
3112 /* _frv_get_got_entry() below will always wrap gad->cur if needed
3113 before returning, so do it here too. This guarantees that,
3114 should cur and fdcur meet at the wrap point, they'll both be
3115 equal to min. */
3116 if (gad->cur == gad->max)
3117 gad->cur = gad->min;
3118
3119 return odd;
3120 }
3121
3122 /* Compute the location of the next GOT entry, given the allocation
3123 data for a range. */
3124
3125 inline static bfd_signed_vma
3126 _frv_get_got_entry (struct _frv_dynamic_got_alloc_data *gad)
3127 {
3128 bfd_signed_vma ret;
3129
3130 if (gad->odd)
3131 {
3132 /* If there was an odd word left behind, use it. */
3133 ret = gad->odd;
3134 gad->odd = 0;
3135 }
3136 else
3137 {
3138 /* Otherwise, use the word pointed to by cur, reserve the next
3139 as an odd word, and skip to the next pair of words, possibly
3140 wrapping around. */
3141 ret = gad->cur;
3142 gad->odd = gad->cur + 4;
3143 gad->cur += 8;
3144 if (gad->cur == gad->max)
3145 gad->cur = gad->min;
3146 }
3147
3148 return ret;
3149 }
3150
3151 /* Compute the location of the next function descriptor entry in the
3152 GOT, given the allocation data for a range. */
3153
3154 inline static bfd_signed_vma
3155 _frv_get_fd_entry (struct _frv_dynamic_got_alloc_data *gad)
3156 {
3157 /* If we're at the bottom, wrap around, and only then allocate the
3158 next pair of words. */
3159 if (gad->fdcur == gad->min)
3160 gad->fdcur = gad->max;
3161 return gad->fdcur -= 8;
3162 }
3163
3164 /* Assign GOT offsets for every GOT entry and function descriptor.
3165 Doing everything in a single pass is tricky. */
3166
3167 static int
3168 _frv_assign_got_entries (void **entryp, void *info_)
3169 {
3170 struct frv_pic_relocs_info *entry = *entryp;
3171 struct _frv_dynamic_got_plt_info *dinfo = info_;
3172
3173 if (entry->got12)
3174 entry->got_entry = _frv_get_got_entry (&dinfo->got12);
3175 else if (entry->gotlos)
3176 entry->got_entry = _frv_get_got_entry (&dinfo->gotlos);
3177 else if (entry->gothilo)
3178 entry->got_entry = _frv_get_got_entry (&dinfo->gothilo);
3179
3180 if (entry->fdgot12)
3181 entry->fdgot_entry = _frv_get_got_entry (&dinfo->got12);
3182 else if (entry->fdgotlos)
3183 entry->fdgot_entry = _frv_get_got_entry (&dinfo->gotlos);
3184 else if (entry->fdgothilo)
3185 entry->fdgot_entry = _frv_get_got_entry (&dinfo->gothilo);
3186
3187 if (entry->fdgoff12)
3188 entry->fd_entry = _frv_get_fd_entry (&dinfo->got12);
3189 else if (entry->plt && dinfo->got12.fdplt)
3190 {
3191 dinfo->got12.fdplt -= 8;
3192 entry->fd_entry = _frv_get_fd_entry (&dinfo->got12);
3193 }
3194 else if (entry->fdgofflos)
3195 entry->fd_entry = _frv_get_fd_entry (&dinfo->gotlos);
3196 else if (entry->plt && dinfo->gotlos.fdplt)
3197 {
3198 dinfo->gotlos.fdplt -= 8;
3199 entry->fd_entry = _frv_get_fd_entry (&dinfo->gotlos);
3200 }
3201 else if (entry->plt)
3202 {
3203 dinfo->gothilo.fdplt -= 8;
3204 entry->fd_entry = _frv_get_fd_entry (&dinfo->gothilo);
3205 }
3206 else if (entry->privfd)
3207 entry->fd_entry = _frv_get_fd_entry (&dinfo->gothilo);
3208
3209 return 1;
3210 }
3211
3212 /* Assign GOT offsets to private function descriptors used by PLT
3213 entries (or referenced by 32-bit offsets), as well as PLT entries
3214 and lazy PLT entries. */
3215
3216 static int
3217 _frv_assign_plt_entries (void **entryp, void *info_)
3218 {
3219 struct frv_pic_relocs_info *entry = *entryp;
3220 struct _frv_dynamic_got_plt_info *dinfo = info_;
3221
3222 /* If this symbol requires a local function descriptor, allocate
3223 one. */
3224 if (entry->privfd && entry->fd_entry == 0)
3225 {
3226 if (dinfo->got12.fdplt)
3227 {
3228 entry->fd_entry = _frv_get_fd_entry (&dinfo->got12);
3229 dinfo->got12.fdplt -= 8;
3230 }
3231 else if (dinfo->gotlos.fdplt)
3232 {
3233 entry->fd_entry = _frv_get_fd_entry (&dinfo->gotlos);
3234 dinfo->gotlos.fdplt -= 8;
3235 }
3236 else
3237 {
3238 BFD_ASSERT (dinfo->gothilo.fdplt)
3239 entry->fd_entry = _frv_get_fd_entry (&dinfo->gothilo);
3240 dinfo->gothilo.fdplt -= 8;
3241 }
3242 }
3243
3244 if (entry->plt)
3245 {
3246 int size;
3247
3248 /* We use the section's raw size to mark the location of the
3249 next PLT entry. */
3250 entry->plt_entry = frv_plt_section (dinfo->g.info)->_raw_size;
3251
3252 /* Figure out the length of this PLT entry based on the
3253 addressing mode we need to reach the function descriptor. */
3254 BFD_ASSERT (entry->fd_entry);
3255 if (entry->fd_entry >= -(1 << (12 - 1))
3256 && entry->fd_entry < (1 << (12 - 1)))
3257 size = 8;
3258 else if (entry->fd_entry >= -(1 << (16 - 1))
3259 && entry->fd_entry < (1 << (16 - 1)))
3260 size = 12;
3261 else
3262 size = 16;
3263
3264 frv_plt_section (dinfo->g.info)->_raw_size += size;
3265 }
3266
3267 if (entry->lazyplt)
3268 {
3269 entry->lzplt_entry = dinfo->g.lzplt;
3270 dinfo->g.lzplt += 8;
3271 /* If this entry is the one that gets the resolver stub, account
3272 for the additional instruction. */
3273 if (entry->lzplt_entry % FRV_LZPLT_BLOCK_SIZE == FRV_LZPLT_RESOLV_LOC)
3274 dinfo->g.lzplt += 4;
3275 }
3276
3277 return 1;
3278 }
3279
3280 /* Follow indirect and warning hash entries so that each got entry
3281 points to the final symbol definition. P must point to a pointer
3282 to the hash table we're traversing. Since this traversal may
3283 modify the hash table, we set this pointer to NULL to indicate
3284 we've made a potentially-destructive change to the hash table, so
3285 the traversal must be restarted. */
3286 static int
3287 _frv_resolve_final_relocs_info (void **entryp, void *p)
3288 {
3289 struct frv_pic_relocs_info *entry = *entryp;
3290 htab_t *htab = p;
3291
3292 if (entry->symndx == -1)
3293 {
3294 struct elf_link_hash_entry *h = entry->d.h;
3295 struct frv_pic_relocs_info *oentry;
3296
3297 while (h->root.type == bfd_link_hash_indirect
3298 || h->root.type == bfd_link_hash_warning)
3299 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3300
3301 if (entry->d.h == h)
3302 return 1;
3303
3304 oentry = frv_pic_relocs_info_for_global (*htab, 0, h, entry->addend,
3305 NO_INSERT);
3306
3307 if (oentry)
3308 {
3309 /* Merge the two entries. */
3310 frv_pic_merge_early_relocs_info (oentry, entry);
3311 htab_clear_slot (*htab, entryp);
3312 return 1;
3313 }
3314
3315 entry->d.h = h;
3316
3317 /* If we can't find this entry with the new bfd hash, re-insert
3318 it, and get the traversal restarted. */
3319 if (! htab_find (*htab, entry))
3320 {
3321 htab_clear_slot (*htab, entryp);
3322 entryp = htab_find_slot (*htab, entry, INSERT);
3323 if (! *entryp)
3324 *entryp = entry;
3325 /* Abort the traversal, since the whole table may have
3326 moved, and leave it up to the parent to restart the
3327 process. */
3328 *(htab_t *)p = NULL;
3329 return 0;
3330 }
3331 }
3332
3333 return 1;
3334 }
3335
3336 /* Set the sizes of the dynamic sections. */
3337
3338 static bfd_boolean
3339 elf32_frv_size_dynamic_sections (bfd *output_bfd,
3340 struct bfd_link_info *info)
3341 {
3342 bfd *dynobj;
3343 asection *s;
3344 struct _frv_dynamic_got_plt_info gpinfo;
3345 bfd_signed_vma odd;
3346 bfd_vma limit;
3347
3348 dynobj = elf_hash_table (info)->dynobj;
3349 BFD_ASSERT (dynobj != NULL);
3350
3351 if (elf_hash_table (info)->dynamic_sections_created)
3352 {
3353 /* Set the contents of the .interp section to the interpreter. */
3354 if (info->executable)
3355 {
3356 s = bfd_get_section_by_name (dynobj, ".interp");
3357 BFD_ASSERT (s != NULL);
3358 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3359 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3360 }
3361 }
3362
3363 memset (&gpinfo, 0, sizeof (gpinfo));
3364 gpinfo.g.info = info;
3365
3366 for (;;)
3367 {
3368 htab_t relocs = frv_relocs_info (info);
3369
3370 htab_traverse (relocs, _frv_resolve_final_relocs_info, &relocs);
3371
3372 if (relocs == frv_relocs_info (info))
3373 break;
3374 }
3375
3376 htab_traverse (frv_relocs_info (info), _frv_count_got_plt_entries,
3377 &gpinfo.g);
3378
3379 odd = 12;
3380 /* Compute the total size taken by entries in the 12-bit and 16-bit
3381 ranges, to tell how many PLT function descriptors we can bring
3382 into the 12-bit range without causing the 16-bit range to
3383 overflow. */
3384 limit = odd + gpinfo.g.got12 + gpinfo.g.gotlos
3385 + gpinfo.g.fd12 + gpinfo.g.fdlos;
3386 if (limit < (bfd_vma)1 << 16)
3387 limit = ((bfd_vma)1 << 16) - limit;
3388 else
3389 limit = 0;
3390 if (gpinfo.g.fdplt < limit)
3391 limit = gpinfo.g.fdplt;
3392
3393 /* Determine the ranges of GOT offsets that we can use for each
3394 range of addressing modes. */
3395 odd = _frv_compute_got_alloc_data (&gpinfo.got12,
3396 0,
3397 odd,
3398 16,
3399 gpinfo.g.got12,
3400 gpinfo.g.fd12,
3401 limit,
3402 (bfd_vma)1 << (12-1));
3403 odd = _frv_compute_got_alloc_data (&gpinfo.gotlos,
3404 gpinfo.got12.min,
3405 odd,
3406 gpinfo.got12.max,
3407 gpinfo.g.gotlos,
3408 gpinfo.g.fdlos,
3409 gpinfo.g.fdplt - gpinfo.got12.fdplt,
3410 (bfd_vma)1 << (16-1));
3411 odd = _frv_compute_got_alloc_data (&gpinfo.gothilo,
3412 gpinfo.gotlos.min,
3413 odd,
3414 gpinfo.gotlos.max,
3415 gpinfo.g.gothilo,
3416 gpinfo.g.fdhilo,
3417 gpinfo.g.fdplt - gpinfo.got12.fdplt
3418 - gpinfo.gotlos.fdplt,
3419 (bfd_vma)1 << (32-1));
3420
3421 /* Now assign (most) GOT offsets. */
3422 htab_traverse (frv_relocs_info (info), _frv_assign_got_entries, &gpinfo);
3423
3424 frv_got_section (info)->_raw_size = gpinfo.gothilo.max - gpinfo.gothilo.min
3425 /* If an odd word is the last word of the GOT, we don't need this
3426 word to be part of the GOT. */
3427 - (odd + 4 == gpinfo.gothilo.max ? 4 : 0);
3428 if (frv_got_section (info)->_raw_size == 0)
3429 frv_got_section (info)->flags |= SEC_EXCLUDE;
3430 else if (frv_got_section (info)->_raw_size == 12
3431 && ! elf_hash_table (info)->dynamic_sections_created)
3432 {
3433 frv_got_section (info)->flags |= SEC_EXCLUDE;
3434 frv_got_section (info)->_raw_size = 0;
3435 }
3436 else
3437 {
3438 frv_got_section (info)->contents =
3439 (bfd_byte *) bfd_zalloc (dynobj, frv_got_section (info)->_raw_size);
3440 if (frv_got_section (info)->contents == NULL)
3441 return FALSE;
3442 }
3443
3444 if (elf_hash_table (info)->dynamic_sections_created)
3445 /* Subtract the number of lzplt entries, since those will generate
3446 relocations in the pltrel section. */
3447 frv_gotrel_section (info)->_raw_size =
3448 (gpinfo.g.relocs - gpinfo.g.lzplt / 8)
3449 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
3450 else
3451 BFD_ASSERT (gpinfo.g.relocs == 0);
3452 if (frv_gotrel_section (info)->_raw_size == 0)
3453 frv_gotrel_section (info)->flags |= SEC_EXCLUDE;
3454 else
3455 {
3456 frv_gotrel_section (info)->contents =
3457 (bfd_byte *) bfd_zalloc (dynobj, frv_gotrel_section (info)->_raw_size);
3458 if (frv_gotrel_section (info)->contents == NULL)
3459 return FALSE;
3460 }
3461
3462 if (elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC)
3463 frv_gotfixup_section (info)->_raw_size = (gpinfo.g.fixups + 1) * 4;
3464 if (frv_gotfixup_section (info)->_raw_size == 0)
3465 frv_gotfixup_section (info)->flags |= SEC_EXCLUDE;
3466 else
3467 {
3468 frv_gotfixup_section (info)->contents =
3469 (bfd_byte *) bfd_zalloc (dynobj,
3470 frv_gotfixup_section (info)->_raw_size);
3471 if (frv_gotfixup_section (info)->contents == NULL)
3472 return FALSE;
3473 }
3474
3475 if (elf_hash_table (info)->dynamic_sections_created)
3476 {
3477 frv_pltrel_section (info)->_raw_size =
3478 gpinfo.g.lzplt / 8 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
3479 if (frv_pltrel_section (info)->_raw_size == 0)
3480 frv_pltrel_section (info)->flags |= SEC_EXCLUDE;
3481 else
3482 {
3483 frv_pltrel_section (info)->contents =
3484 (bfd_byte *) bfd_zalloc (dynobj,
3485 frv_pltrel_section (info)->_raw_size);
3486 if (frv_pltrel_section (info)->contents == NULL)
3487 return FALSE;
3488 }
3489 }
3490
3491 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
3492 such that there's room for the additional instruction needed to
3493 call the resolver. Since _frv_assign_got_entries didn't account
3494 for them, our block size is 4 bytes smaller than the real block
3495 size. */
3496 if (elf_hash_table (info)->dynamic_sections_created)
3497 {
3498 frv_plt_section (info)->_raw_size = gpinfo.g.lzplt
3499 + ((gpinfo.g.lzplt + (FRV_LZPLT_BLOCK_SIZE - 4) - 8)
3500 / (FRV_LZPLT_BLOCK_SIZE - 4) * 4);
3501 }
3502
3503 /* Reset it, such that _frv_assign_plt_entries() can use it to
3504 actually assign lazy PLT entries addresses. */
3505 gpinfo.g.lzplt = 0;
3506
3507 /* Save information that we're going to need to generate GOT and PLT
3508 entries. */
3509 frv_got_initial_offset (info) = -gpinfo.gothilo.min;
3510
3511 if (get_elf_backend_data (output_bfd)->want_got_sym)
3512 elf_hash_table (info)->hgot->root.u.def.value
3513 += frv_got_initial_offset (info);
3514
3515 if (elf_hash_table (info)->dynamic_sections_created)
3516 frv_plt_initial_offset (info) = frv_plt_section (info)->_raw_size;
3517
3518 htab_traverse (frv_relocs_info (info), _frv_assign_plt_entries, &gpinfo);
3519
3520 /* Allocate the PLT section contents only after
3521 _frv_assign_plt_entries has a chance to add the size of the
3522 non-lazy PLT entries. */
3523 if (elf_hash_table (info)->dynamic_sections_created)
3524 {
3525 if (frv_plt_section (info)->_raw_size == 0)
3526 frv_plt_section (info)->flags |= SEC_EXCLUDE;
3527 else
3528 {
3529 frv_plt_section (info)->contents =
3530 (bfd_byte *) bfd_zalloc (dynobj, frv_plt_section (info)->_raw_size);
3531 if (frv_plt_section (info)->contents == NULL)
3532 return FALSE;
3533 }
3534 }
3535
3536 if (elf_hash_table (info)->dynamic_sections_created)
3537 {
3538 if (frv_got_section (info)->_raw_size)
3539 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0))
3540 return FALSE;
3541
3542 if (frv_pltrel_section (info)->_raw_size)
3543 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
3544 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL)
3545 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
3546 return FALSE;
3547
3548 if (frv_gotrel_section (info)->_raw_size)
3549 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0)
3550 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0)
3551 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT,
3552 sizeof (Elf32_External_Rel)))
3553 return FALSE;
3554 }
3555
3556 return TRUE;
3557 }
3558
3559 static bfd_boolean
3560 elf32_frv_always_size_sections (bfd *output_bfd,
3561 struct bfd_link_info *info)
3562 {
3563 if (!info->relocatable
3564 && elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC)
3565 {
3566 struct elf_link_hash_entry *h;
3567 asection *sec;
3568
3569 /* Force a PT_GNU_STACK segment to be created. */
3570 if (! elf_tdata (output_bfd)->stack_flags)
3571 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
3572
3573 /* Define __stacksize if it's not defined yet. */
3574 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3575 FALSE, FALSE, FALSE);
3576 if (! h || h->root.type != bfd_link_hash_defined
3577 || h->type != STT_OBJECT
3578 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3579 {
3580 struct bfd_link_hash_entry *bh = NULL;
3581
3582 if (!(_bfd_generic_link_add_one_symbol
3583 (info, output_bfd, "__stacksize",
3584 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE,
3585 (const char *) NULL, FALSE,
3586 get_elf_backend_data (output_bfd)->collect, &bh)))
3587 return FALSE;
3588
3589 h = (struct elf_link_hash_entry *) bh;
3590 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3591 h->type = STT_OBJECT;
3592 }
3593
3594 /* Create a stack section, and set its alignment. */
3595 sec = bfd_make_section (output_bfd, ".stack");
3596
3597 if (sec == NULL
3598 || ! bfd_set_section_alignment (output_bfd, sec, 3))
3599 return FALSE;
3600 }
3601
3602 return TRUE;
3603 }
3604
3605 static bfd_boolean
3606 elf32_frv_modify_segment_map (bfd *output_bfd,
3607 struct bfd_link_info *info)
3608 {
3609 if (elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC)
3610 {
3611 struct elf_segment_map *m;
3612
3613 for (m = elf_tdata (output_bfd)->segment_map; m != NULL; m = m->next)
3614 if (m->p_type == PT_GNU_STACK)
3615 break;
3616
3617 if (m)
3618 {
3619 asection *sec = bfd_get_section_by_name (output_bfd, ".stack");
3620 struct elf_link_hash_entry *h;
3621
3622 if (sec)
3623 {
3624 /* Obtain the pointer to the __stacksize symbol. */
3625 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3626 FALSE, FALSE, FALSE);
3627 while (h->root.type == bfd_link_hash_indirect
3628 || h->root.type == bfd_link_hash_warning)
3629 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3630 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
3631
3632 /* Set the section size from the symbol value. We
3633 intentionally ignore the symbol section. */
3634 if (h->root.type == bfd_link_hash_defined)
3635 sec->_raw_size = h->root.u.def.value;
3636 else
3637 sec->_raw_size = DEFAULT_STACK_SIZE;
3638
3639 /* Add the stack section to the PT_GNU_STACK segment,
3640 such that its size and alignment requirements make it
3641 to the segment. */
3642 m->sections[m->count] = sec;
3643 m->count++;
3644 }
3645 }
3646 }
3647
3648 return TRUE;
3649 }
3650
3651 /* Fill in code and data in dynamic sections. */
3652
3653 static bfd_boolean
3654 elf32_frv_finish_dynamic_sections (bfd *output_bfd,
3655 struct bfd_link_info *info)
3656 {
3657 bfd *dynobj;
3658 asection *sdyn;
3659
3660 dynobj = elf_hash_table (info)->dynobj;
3661
3662 if (frv_got_section (info))
3663 {
3664 BFD_ASSERT (frv_gotrel_section (info)->_raw_size
3665 == (frv_gotrel_section (info)->reloc_count
3666 * sizeof (Elf32_External_Rel)));
3667
3668 if (frv_gotfixup_section (info))
3669 {
3670 if (elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC)
3671 {
3672 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
3673 bfd_vma got_value = hgot->root.u.def.value
3674 + hgot->root.u.def.section->output_section->vma
3675 + hgot->root.u.def.section->output_offset;
3676
3677 _frv_add_rofixup (output_bfd, frv_gotfixup_section (info),
3678 got_value, 0);
3679 }
3680
3681 if (frv_gotfixup_section (info)->_raw_size
3682 != (frv_gotfixup_section (info)->reloc_count * 4))
3683 {
3684 if (frv_gotfixup_section (info)->_raw_size
3685 < frv_gotfixup_section (info)->reloc_count * 4)
3686 {
3687 info->callbacks->warning
3688 (info, "LINKER BUG: .rofixup section size mismatch",
3689 ".rofixup", NULL, NULL, 0);
3690 abort ();
3691 return FALSE;
3692 }
3693 else if (!elf_hash_table (info)->dynamic_sections_created)
3694 {
3695 info->callbacks->warning
3696 (info, "no dynamic sections, missing -melf32frvfd?",
3697 ".rofixup", NULL, NULL, 0);
3698 return FALSE;
3699 }
3700 BFD_ASSERT (0);
3701 }
3702 }
3703 }
3704 if (elf_hash_table (info)->dynamic_sections_created)
3705 {
3706 BFD_ASSERT (frv_pltrel_section (info)->_raw_size
3707 == (frv_pltrel_section (info)->reloc_count
3708 * sizeof (Elf32_External_Rel)));
3709 }
3710
3711 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3712
3713 if (elf_hash_table (info)->dynamic_sections_created)
3714 {
3715 Elf32_External_Dyn * dyncon;
3716 Elf32_External_Dyn * dynconend;
3717
3718 BFD_ASSERT (sdyn != NULL);
3719
3720 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3721 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3722
3723 for (; dyncon < dynconend; dyncon++)
3724 {
3725 Elf_Internal_Dyn dyn;
3726
3727 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3728
3729 switch (dyn.d_tag)
3730 {
3731 default:
3732 break;
3733
3734 case DT_PLTGOT:
3735 dyn.d_un.d_ptr = frv_got_section (info)->output_section->vma
3736 + frv_got_section (info)->output_offset
3737 + frv_got_initial_offset (info);
3738 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3739 break;
3740
3741 case DT_JMPREL:
3742 dyn.d_un.d_ptr = frv_pltrel_section (info)->output_section->vma
3743 + frv_pltrel_section (info)->output_offset;
3744 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3745 break;
3746
3747 case DT_PLTRELSZ:
3748 if (frv_pltrel_section (info)->_cooked_size != 0)
3749 dyn.d_un.d_val = frv_pltrel_section (info)->_cooked_size;
3750 else
3751 dyn.d_un.d_val = frv_pltrel_section (info)->_raw_size;
3752 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3753 break;
3754 }
3755 }
3756 }
3757
3758 return TRUE;
3759 }
3760
3761 /* Adjust a symbol defined by a dynamic object and referenced by a
3762 regular object. */
3763
3764 static bfd_boolean
3765 elf32_frv_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
3766 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
3767 {
3768 bfd * dynobj;
3769
3770 dynobj = elf_hash_table (info)->dynobj;
3771
3772 /* Make sure we know what is going on here. */
3773 BFD_ASSERT (dynobj != NULL
3774 && (h->weakdef != NULL
3775 || ((h->elf_link_hash_flags
3776 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3777 && (h->elf_link_hash_flags
3778 & ELF_LINK_HASH_REF_REGULAR) != 0
3779 && (h->elf_link_hash_flags
3780 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
3781
3782 /* If this is a weak symbol, and there is a real definition, the
3783 processor independent code will have arranged for us to see the
3784 real definition first, and we can just use the same value. */
3785 if (h->weakdef != NULL)
3786 {
3787 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
3788 || h->weakdef->root.type == bfd_link_hash_defweak);
3789 h->root.u.def.section = h->weakdef->root.u.def.section;
3790 h->root.u.def.value = h->weakdef->root.u.def.value;
3791 }
3792
3793 return TRUE;
3794 }
3795
3796 /* Perform any actions needed for dynamic symbols. */
3797
3798 static bfd_boolean
3799 elf32_frv_finish_dynamic_symbol (bfd *output_bfd ATTRIBUTE_UNUSED,
3800 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3801 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED,
3802 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
3803 {
3804 return TRUE;
3805 }
3806
3807 /* Decide whether to attempt to turn absptr or lsda encodings in
3808 shared libraries into pcrel within the given input section. */
3809
3810 static bfd_boolean
3811 frv_elf_use_relative_eh_frame (bfd *input_bfd,
3812 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3813 asection *eh_frame_section ATTRIBUTE_UNUSED)
3814 {
3815 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
3816 if (elf_elfheader (input_bfd)->e_flags & EF_FRV_FDPIC)
3817 return FALSE;
3818
3819 return TRUE;
3820 }
3821
3822 /* Adjust the contents of an eh_frame_hdr section before they're output. */
3823
3824 static bfd_byte
3825 frv_elf_encode_eh_address (bfd *abfd,
3826 struct bfd_link_info *info,
3827 asection *osec, bfd_vma offset,
3828 asection *loc_sec, bfd_vma loc_offset,
3829 bfd_vma *encoded)
3830 {
3831 struct elf_link_hash_entry *h;
3832
3833 /* Non-FDPIC binaries can use PC-relative encodings. */
3834 if (! (elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC))
3835 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
3836 loc_sec, loc_offset, encoded);
3837
3838 h = elf_hash_table (info)->hgot;
3839 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
3840
3841 if (! h || (_frv_osec_to_segment (abfd, osec)
3842 == _frv_osec_to_segment (abfd, loc_sec->output_section)))
3843 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
3844 loc_sec, loc_offset, encoded);
3845
3846 BFD_ASSERT (_frv_osec_to_segment (abfd, osec)
3847 == _frv_osec_to_segment (abfd,
3848 h->root.u.def.section->output_section));
3849
3850 *encoded = osec->vma + offset
3851 - (h->root.u.def.value
3852 + h->root.u.def.section->output_section->vma
3853 + h->root.u.def.section->output_offset);
3854
3855 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
3856 }
3857
3858 /* Look through the relocs for a section during the first phase.
3859
3860 Besides handling virtual table relocs for gc, we have to deal with
3861 all sorts of PIC-related relocations. We describe below the
3862 general plan on how to handle such relocations, even though we only
3863 collect information at this point, storing them in hash tables for
3864 perusal of later passes.
3865
3866 32 relocations are propagated to the linker output when creating
3867 position-independent output. LO16 and HI16 relocations are not
3868 supposed to be encountered in this case.
3869
3870 LABEL16 should always be resolvable by the linker, since it's only
3871 used by branches.
3872
3873 LABEL24, on the other hand, is used by calls. If it turns out that
3874 the target of a call is a dynamic symbol, a PLT entry must be
3875 created for it, which triggers the creation of a private function
3876 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
3877
3878 GPREL relocations require the referenced symbol to be in the same
3879 segment as _gp, but this can only be checked later.
3880
3881 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
3882 exist. LABEL24 might as well, since it may require a PLT entry,
3883 that will require a got.
3884
3885 Non-FUNCDESC GOT relocations require a GOT entry to be created
3886 regardless of whether the symbol is dynamic. However, since a
3887 global symbol that turns out to not be exported may have the same
3888 address of a non-dynamic symbol, we don't assign GOT entries at
3889 this point, such that we can share them in this case. A relocation
3890 for the GOT entry always has to be created, be it to offset a
3891 private symbol by the section load address, be it to get the symbol
3892 resolved dynamically.
3893
3894 FUNCDESC GOT relocations require a GOT entry to be created, and
3895 handled as if a FUNCDESC relocation was applied to the GOT entry in
3896 an object file.
3897
3898 FUNCDESC relocations referencing a symbol that turns out to NOT be
3899 dynamic cause a private function descriptor to be created. The
3900 FUNCDESC relocation then decays to a 32 relocation that points at
3901 the private descriptor. If the symbol is dynamic, the FUNCDESC
3902 relocation is propagated to the linker output, such that the
3903 dynamic linker creates the canonical descriptor, pointing to the
3904 dynamically-resolved definition of the function.
3905
3906 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
3907 symbols that are assigned to the same segment as the GOT, but we
3908 can only check this later, after we know the complete set of
3909 symbols defined and/or exported.
3910
3911 FUNCDESC GOTOFF relocations require a function descriptor to be
3912 created and, unless lazy binding is disabled or the symbol is not
3913 dynamic, a lazy PLT entry. Since we can't tell at this point
3914 whether a symbol is going to be dynamic, we have to decide later
3915 whether to create a lazy PLT entry or bind the descriptor directly
3916 to the private function.
3917
3918 FUNCDESC_VALUE relocations are not supposed to be present in object
3919 files, but they may very well be simply propagated to the linker
3920 output, since they have no side effect.
3921
3922
3923 A function descriptor always requires a FUNCDESC_VALUE relocation.
3924 Whether it's in .plt.rel or not depends on whether lazy binding is
3925 enabled and on whether the referenced symbol is dynamic.
3926
3927 The existence of a lazy PLT requires the resolverStub lazy PLT
3928 entry to be present.
3929
3930
3931 As for assignment of GOT, PLT and lazy PLT entries, and private
3932 descriptors, we might do them all sequentially, but we can do
3933 better than that. For example, we can place GOT entries and
3934 private function descriptors referenced using 12-bit operands
3935 closer to the PIC register value, such that these relocations don't
3936 overflow. Those that are only referenced with LO16 relocations
3937 could come next, but we may as well place PLT-required function
3938 descriptors in the 12-bit range to make them shorter. Symbols
3939 referenced with LO16/HI16 may come next, but we may place
3940 additional function descriptors in the 16-bit range if we can
3941 reliably tell that we've already placed entries that are ever
3942 referenced with only LO16. PLT entries are therefore generated as
3943 small as possible, while not introducing relocation overflows in
3944 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
3945 generated before or after PLT entries, but not intermingled with
3946 them, such that we can have more lazy PLT entries in range for a
3947 branch to the resolverStub. The resolverStub should be emitted at
3948 the most distant location from the first lazy PLT entry such that
3949 it's still in range for a branch, or closer, if there isn't a need
3950 for so many lazy PLT entries. Additional lazy PLT entries may be
3951 emitted after the resolverStub, as long as branches are still in
3952 range. If the branch goes out of range, longer lazy PLT entries
3953 are emitted.
3954
3955 We could further optimize PLT and lazy PLT entries by giving them
3956 priority in assignment to closer-to-gr17 locations depending on the
3957 number of occurrences of references to them (assuming a function
3958 that's called more often is more important for performance, so its
3959 PLT entry should be faster), or taking hints from the compiler.
3960 Given infinite time and money... :-) */
3961
3962 static bfd_boolean
3963 elf32_frv_check_relocs (abfd, info, sec, relocs)
3964 bfd *abfd;
3965 struct bfd_link_info *info;
3966 asection *sec;
3967 const Elf_Internal_Rela *relocs;
3968 {
3969 Elf_Internal_Shdr *symtab_hdr;
3970 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3971 const Elf_Internal_Rela *rel;
3972 const Elf_Internal_Rela *rel_end;
3973 bfd *dynobj;
3974 struct frv_pic_relocs_info *picrel;
3975
3976 if (info->relocatable)
3977 return TRUE;
3978
3979 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3980 sym_hashes = elf_sym_hashes (abfd);
3981 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
3982 if (!elf_bad_symtab (abfd))
3983 sym_hashes_end -= symtab_hdr->sh_info;
3984
3985 dynobj = elf_hash_table (info)->dynobj;
3986 rel_end = relocs + sec->reloc_count;
3987 for (rel = relocs; rel < rel_end; rel++)
3988 {
3989 struct elf_link_hash_entry *h;
3990 unsigned long r_symndx;
3991
3992 r_symndx = ELF32_R_SYM (rel->r_info);
3993 if (r_symndx < symtab_hdr->sh_info)
3994 h = NULL;
3995 else
3996 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3997
3998 switch (ELF32_R_TYPE (rel->r_info))
3999 {
4000 case R_FRV_LABEL24:
4001 case R_FRV_32:
4002 case R_FRV_GOT12:
4003 case R_FRV_GOTHI:
4004 case R_FRV_GOTLO:
4005 case R_FRV_FUNCDESC_GOT12:
4006 case R_FRV_FUNCDESC_GOTHI:
4007 case R_FRV_FUNCDESC_GOTLO:
4008 case R_FRV_GOTOFF12:
4009 case R_FRV_GOTOFFHI:
4010 case R_FRV_GOTOFFLO:
4011 case R_FRV_FUNCDESC_GOTOFF12:
4012 case R_FRV_FUNCDESC_GOTOFFHI:
4013 case R_FRV_FUNCDESC_GOTOFFLO:
4014 case R_FRV_FUNCDESC:
4015 case R_FRV_FUNCDESC_VALUE:
4016 if (! dynobj)
4017 {
4018 elf_hash_table (info)->dynobj = dynobj = abfd;
4019 if (! _frv_create_got_section (abfd, info))
4020 return FALSE;
4021 }
4022 if (h != NULL)
4023 {
4024 if (h->dynindx == -1)
4025 switch (ELF_ST_VISIBILITY (h->other))
4026 {
4027 case STV_INTERNAL:
4028 case STV_HIDDEN:
4029 break;
4030 default:
4031 bfd_elf_link_record_dynamic_symbol (info, h);
4032 break;
4033 }
4034 picrel
4035 = frv_pic_relocs_info_for_global (frv_relocs_info (info),
4036 abfd, h,
4037 rel->r_addend, INSERT);
4038 }
4039 else
4040 picrel = frv_pic_relocs_info_for_local (frv_relocs_info (info),
4041 abfd, r_symndx,
4042 rel->r_addend, INSERT);
4043 if (! picrel)
4044 return FALSE;
4045 break;
4046
4047 default:
4048 picrel = NULL;
4049 break;
4050 }
4051
4052 switch (ELF32_R_TYPE (rel->r_info))
4053 {
4054 case R_FRV_LABEL24:
4055 picrel->call = 1;
4056 break;
4057
4058 case R_FRV_FUNCDESC_VALUE:
4059 picrel->relocsfdv++;
4060 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4061 picrel->relocs32--;
4062 /* Fall through. */
4063 case R_FRV_32:
4064 picrel->sym = 1;
4065 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4066 picrel->relocs32++;
4067 break;
4068
4069 case R_FRV_GOT12:
4070 picrel->got12 = 1;
4071 break;
4072
4073 case R_FRV_GOTHI:
4074 case R_FRV_GOTLO:
4075 picrel->gothilo = 1;
4076 break;
4077
4078 case R_FRV_FUNCDESC_GOT12:
4079 picrel->fdgot12 = 1;
4080 break;
4081
4082 case R_FRV_FUNCDESC_GOTHI:
4083 case R_FRV_FUNCDESC_GOTLO:
4084 picrel->fdgothilo = 1;
4085 break;
4086
4087 case R_FRV_GOTOFF12:
4088 case R_FRV_GOTOFFHI:
4089 case R_FRV_GOTOFFLO:
4090 picrel->gotoff = 1;
4091 break;
4092
4093 case R_FRV_FUNCDESC_GOTOFF12:
4094 picrel->fdgoff12 = 1;
4095 break;
4096
4097 case R_FRV_FUNCDESC_GOTOFFHI:
4098 case R_FRV_FUNCDESC_GOTOFFLO:
4099 picrel->fdgoffhilo = 1;
4100 break;
4101
4102 case R_FRV_FUNCDESC:
4103 picrel->fd = 1;
4104 picrel->relocsfd++;
4105 break;
4106
4107 /* This relocation describes the C++ object vtable hierarchy.
4108 Reconstruct it for later use during GC. */
4109 case R_FRV_GNU_VTINHERIT:
4110 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4111 return FALSE;
4112 break;
4113
4114 /* This relocation describes which C++ vtable entries are actually
4115 used. Record for later use during GC. */
4116 case R_FRV_GNU_VTENTRY:
4117 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4118 return FALSE;
4119 break;
4120 }
4121 }
4122
4123 return TRUE;
4124 }
4125
4126 \f
4127 /* Return the machine subcode from the ELF e_flags header. */
4128
4129 static int
4130 elf32_frv_machine (abfd)
4131 bfd *abfd;
4132 {
4133 switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK)
4134 {
4135 default: break;
4136 case EF_FRV_CPU_FR550: return bfd_mach_fr550;
4137 case EF_FRV_CPU_FR500: return bfd_mach_fr500;
4138 case EF_FRV_CPU_FR450: return bfd_mach_fr450;
4139 case EF_FRV_CPU_FR405: return bfd_mach_fr400;
4140 case EF_FRV_CPU_FR400: return bfd_mach_fr400;
4141 case EF_FRV_CPU_FR300: return bfd_mach_fr300;
4142 case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple;
4143 case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat;
4144 }
4145
4146 return bfd_mach_frv;
4147 }
4148
4149 /* Set the right machine number for a FRV ELF file. */
4150
4151 static bfd_boolean
4152 elf32_frv_object_p (abfd)
4153 bfd *abfd;
4154 {
4155 bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd));
4156 return TRUE;
4157 }
4158 \f
4159 /* Function to set the ELF flag bits. */
4160
4161 static bfd_boolean
4162 frv_elf_set_private_flags (abfd, flags)
4163 bfd *abfd;
4164 flagword flags;
4165 {
4166 elf_elfheader (abfd)->e_flags = flags;
4167 elf_flags_init (abfd) = TRUE;
4168 return TRUE;
4169 }
4170
4171 /* Copy backend specific data from one object module to another. */
4172
4173 static bfd_boolean
4174 frv_elf_copy_private_bfd_data (ibfd, obfd)
4175 bfd *ibfd;
4176 bfd *obfd;
4177 {
4178 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4179 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4180 return TRUE;
4181
4182 BFD_ASSERT (!elf_flags_init (obfd)
4183 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
4184
4185 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
4186 elf_flags_init (obfd) = TRUE;
4187 return TRUE;
4188 }
4189
4190 /* Return true if the architecture described by elf header flag
4191 EXTENSION is an extension of the architecture described by BASE. */
4192
4193 static bfd_boolean
4194 frv_elf_arch_extension_p (flagword base, flagword extension)
4195 {
4196 if (base == extension)
4197 return TRUE;
4198
4199 /* CPU_GENERIC code can be merged with code for a specific
4200 architecture, in which case the result is marked as being
4201 for the specific architecture. Everything is therefore
4202 an extension of CPU_GENERIC. */
4203 if (base == EF_FRV_CPU_GENERIC)
4204 return TRUE;
4205
4206 if (extension == EF_FRV_CPU_FR450)
4207 if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405)
4208 return TRUE;
4209
4210 if (extension == EF_FRV_CPU_FR405)
4211 if (base == EF_FRV_CPU_FR400)
4212 return TRUE;
4213
4214 return FALSE;
4215 }
4216
4217 /* Merge backend specific data from an object file to the output
4218 object file when linking. */
4219
4220 static bfd_boolean
4221 frv_elf_merge_private_bfd_data (ibfd, obfd)
4222 bfd *ibfd;
4223 bfd *obfd;
4224 {
4225 flagword old_flags, old_partial;
4226 flagword new_flags, new_partial;
4227 bfd_boolean error = FALSE;
4228 char new_opt[80];
4229 char old_opt[80];
4230
4231 new_opt[0] = old_opt[0] = '\0';
4232 new_flags = elf_elfheader (ibfd)->e_flags;
4233 old_flags = elf_elfheader (obfd)->e_flags;
4234
4235 if (new_flags & EF_FRV_FDPIC)
4236 new_flags &= ~EF_FRV_PIC;
4237
4238 #ifdef DEBUG
4239 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
4240 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
4241 bfd_get_filename (ibfd));
4242 #endif
4243
4244 if (!elf_flags_init (obfd)) /* First call, no flags set. */
4245 {
4246 elf_flags_init (obfd) = TRUE;
4247 old_flags = new_flags;
4248 }
4249
4250 else if (new_flags == old_flags) /* Compatible flags are ok. */
4251 ;
4252
4253 else /* Possibly incompatible flags. */
4254 {
4255 /* Warn if different # of gprs are used. Note, 0 means nothing is
4256 said about the size of gprs. */
4257 new_partial = (new_flags & EF_FRV_GPR_MASK);
4258 old_partial = (old_flags & EF_FRV_GPR_MASK);
4259 if (new_partial == old_partial)
4260 ;
4261
4262 else if (new_partial == 0)
4263 ;
4264
4265 else if (old_partial == 0)
4266 old_flags |= new_partial;
4267
4268 else
4269 {
4270 switch (new_partial)
4271 {
4272 default: strcat (new_opt, " -mgpr-??"); break;
4273 case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break;
4274 case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break;
4275 }
4276
4277 switch (old_partial)
4278 {
4279 default: strcat (old_opt, " -mgpr-??"); break;
4280 case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break;
4281 case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break;
4282 }
4283 }
4284
4285 /* Warn if different # of fprs are used. Note, 0 means nothing is
4286 said about the size of fprs. */
4287 new_partial = (new_flags & EF_FRV_FPR_MASK);
4288 old_partial = (old_flags & EF_FRV_FPR_MASK);
4289 if (new_partial == old_partial)
4290 ;
4291
4292 else if (new_partial == 0)
4293 ;
4294
4295 else if (old_partial == 0)
4296 old_flags |= new_partial;
4297
4298 else
4299 {
4300 switch (new_partial)
4301 {
4302 default: strcat (new_opt, " -mfpr-?"); break;
4303 case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break;
4304 case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break;
4305 case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break;
4306 }
4307
4308 switch (old_partial)
4309 {
4310 default: strcat (old_opt, " -mfpr-?"); break;
4311 case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break;
4312 case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break;
4313 case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break;
4314 }
4315 }
4316
4317 /* Warn if different dword support was used. Note, 0 means nothing is
4318 said about the dword support. */
4319 new_partial = (new_flags & EF_FRV_DWORD_MASK);
4320 old_partial = (old_flags & EF_FRV_DWORD_MASK);
4321 if (new_partial == old_partial)
4322 ;
4323
4324 else if (new_partial == 0)
4325 ;
4326
4327 else if (old_partial == 0)
4328 old_flags |= new_partial;
4329
4330 else
4331 {
4332 switch (new_partial)
4333 {
4334 default: strcat (new_opt, " -mdword-?"); break;
4335 case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break;
4336 case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break;
4337 }
4338
4339 switch (old_partial)
4340 {
4341 default: strcat (old_opt, " -mdword-?"); break;
4342 case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break;
4343 case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break;
4344 }
4345 }
4346
4347 /* Or in flags that accumulate (ie, if one module uses it, mark that the
4348 feature is used. */
4349 old_flags |= new_flags & (EF_FRV_DOUBLE
4350 | EF_FRV_MEDIA
4351 | EF_FRV_MULADD
4352 | EF_FRV_NON_PIC_RELOCS);
4353
4354 /* If any module was compiled without -G0, clear the G0 bit. */
4355 old_flags = ((old_flags & ~ EF_FRV_G0)
4356 | (old_flags & new_flags & EF_FRV_G0));
4357
4358 /* If any module was compiled without -mnopack, clear the mnopack bit. */
4359 old_flags = ((old_flags & ~ EF_FRV_NOPACK)
4360 | (old_flags & new_flags & EF_FRV_NOPACK));
4361
4362 /* We don't have to do anything if the pic flags are the same, or the new
4363 module(s) were compiled with -mlibrary-pic. */
4364 new_partial = (new_flags & EF_FRV_PIC_FLAGS);
4365 old_partial = (old_flags & EF_FRV_PIC_FLAGS);
4366 if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0))
4367 ;
4368
4369 /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic
4370 flags if any from the new module. */
4371 else if ((old_partial & EF_FRV_LIBPIC) != 0)
4372 old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial;
4373
4374 /* If we have mixtures of -fpic and -fPIC, or in both bits. */
4375 else if (new_partial != 0 && old_partial != 0)
4376 old_flags |= new_partial;
4377
4378 /* One module was compiled for pic and the other was not, see if we have
4379 had any relocations that are not pic-safe. */
4380 else
4381 {
4382 if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0)
4383 old_flags |= new_partial;
4384 else
4385 {
4386 old_flags &= ~ EF_FRV_PIC_FLAGS;
4387 #ifndef FRV_NO_PIC_ERROR
4388 error = TRUE;
4389 (*_bfd_error_handler)
4390 (_("%s: compiled with %s and linked with modules that use non-pic relocations"),
4391 bfd_get_filename (ibfd),
4392 (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic");
4393 #endif
4394 }
4395 }
4396
4397 /* Warn if different cpu is used (allow a specific cpu to override
4398 the generic cpu). */
4399 new_partial = (new_flags & EF_FRV_CPU_MASK);
4400 old_partial = (old_flags & EF_FRV_CPU_MASK);
4401 if (frv_elf_arch_extension_p (new_partial, old_partial))
4402 ;
4403
4404 else if (frv_elf_arch_extension_p (old_partial, new_partial))
4405 old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial;
4406
4407 else
4408 {
4409 switch (new_partial)
4410 {
4411 default: strcat (new_opt, " -mcpu=?"); break;
4412 case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break;
4413 case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break;
4414 case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break;
4415 case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break;
4416 case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break;
4417 case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break;
4418 case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break;
4419 case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break;
4420 case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break;
4421 }
4422
4423 switch (old_partial)
4424 {
4425 default: strcat (old_opt, " -mcpu=?"); break;
4426 case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break;
4427 case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break;
4428 case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break;
4429 case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break;
4430 case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break;
4431 case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break;
4432 case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break;
4433 case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break;
4434 case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break;
4435 }
4436 }
4437
4438 /* Print out any mismatches from above. */
4439 if (new_opt[0])
4440 {
4441 error = TRUE;
4442 (*_bfd_error_handler)
4443 (_("%s: compiled with %s and linked with modules compiled with %s"),
4444 bfd_get_filename (ibfd), new_opt, old_opt);
4445 }
4446
4447 /* Warn about any other mismatches */
4448 new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS);
4449 old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS);
4450 if (new_partial != old_partial)
4451 {
4452 old_flags |= new_partial;
4453 error = TRUE;
4454 (*_bfd_error_handler)
4455 (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"),
4456 bfd_get_filename (ibfd), (long)new_partial, (long)old_partial);
4457 }
4458 }
4459
4460 /* If the cpu is -mcpu=simple, then set the -mnopack bit. */
4461 if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE)
4462 old_flags |= EF_FRV_NOPACK;
4463
4464 /* Update the old flags now with changes made above. */
4465 old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK;
4466 elf_elfheader (obfd)->e_flags = old_flags;
4467 if (old_partial != (old_flags & EF_FRV_CPU_MASK))
4468 bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd));
4469
4470 if (error)
4471 bfd_set_error (bfd_error_bad_value);
4472
4473 return !error;
4474 }
4475
4476 \f
4477 bfd_boolean
4478 frv_elf_print_private_bfd_data (abfd, ptr)
4479 bfd *abfd;
4480 PTR ptr;
4481 {
4482 FILE *file = (FILE *) ptr;
4483 flagword flags;
4484
4485 BFD_ASSERT (abfd != NULL && ptr != NULL);
4486
4487 /* Print normal ELF private data. */
4488 _bfd_elf_print_private_bfd_data (abfd, ptr);
4489
4490 flags = elf_elfheader (abfd)->e_flags;
4491 fprintf (file, _("private flags = 0x%lx:"), (long)flags);
4492
4493 switch (flags & EF_FRV_CPU_MASK)
4494 {
4495 default: break;
4496 case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break;
4497 case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break;
4498 case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break;
4499 case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break;
4500 case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break;
4501 case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break;
4502 case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break;
4503 case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break;
4504 }
4505
4506 switch (flags & EF_FRV_GPR_MASK)
4507 {
4508 default: break;
4509 case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break;
4510 case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break;
4511 }
4512
4513 switch (flags & EF_FRV_FPR_MASK)
4514 {
4515 default: break;
4516 case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break;
4517 case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break;
4518 case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break;
4519 }
4520
4521 switch (flags & EF_FRV_DWORD_MASK)
4522 {
4523 default: break;
4524 case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break;
4525 case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break;
4526 }
4527
4528 if (flags & EF_FRV_DOUBLE)
4529 fprintf (file, " -mdouble");
4530
4531 if (flags & EF_FRV_MEDIA)
4532 fprintf (file, " -mmedia");
4533
4534 if (flags & EF_FRV_MULADD)
4535 fprintf (file, " -mmuladd");
4536
4537 if (flags & EF_FRV_PIC)
4538 fprintf (file, " -fpic");
4539
4540 if (flags & EF_FRV_BIGPIC)
4541 fprintf (file, " -fPIC");
4542
4543 if (flags & EF_FRV_LIBPIC)
4544 fprintf (file, " -mlibrary-pic");
4545
4546 if (flags & EF_FRV_FDPIC)
4547 fprintf (file, " -mfdpic");
4548
4549 if (flags & EF_FRV_NON_PIC_RELOCS)
4550 fprintf (file, " non-pic relocations");
4551
4552 if (flags & EF_FRV_G0)
4553 fprintf (file, " -G0");
4554
4555 fputc ('\n', file);
4556 return TRUE;
4557 }
4558
4559 \f
4560 #define ELF_ARCH bfd_arch_frv
4561 #define ELF_MACHINE_CODE EM_CYGNUS_FRV
4562 #define ELF_MAXPAGESIZE 0x1000
4563
4564 #define TARGET_BIG_SYM bfd_elf32_frv_vec
4565 #define TARGET_BIG_NAME "elf32-frv"
4566
4567 #define elf_info_to_howto_rel frv_info_to_howto_rel
4568 #define elf_info_to_howto frv_info_to_howto_rela
4569 #define elf_backend_relocate_section elf32_frv_relocate_section
4570 #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook
4571 #define elf_backend_gc_sweep_hook elf32_frv_gc_sweep_hook
4572 #define elf_backend_check_relocs elf32_frv_check_relocs
4573 #define elf_backend_object_p elf32_frv_object_p
4574 #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook
4575
4576 #define elf_backend_can_gc_sections 1
4577 #define elf_backend_rela_normal 1
4578
4579 #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup
4580 #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags
4581 #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data
4582 #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data
4583 #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data
4584
4585 #define bfd_elf32_bfd_link_hash_table_create frv_elf_link_hash_table_create
4586 #define elf_backend_always_size_sections \
4587 elf32_frv_always_size_sections
4588 #define elf_backend_modify_segment_map \
4589 elf32_frv_modify_segment_map
4590
4591 #define elf_backend_create_dynamic_sections \
4592 elf32_frv_create_dynamic_sections
4593 #define elf_backend_adjust_dynamic_symbol \
4594 elf32_frv_adjust_dynamic_symbol
4595 #define elf_backend_size_dynamic_sections \
4596 elf32_frv_size_dynamic_sections
4597 #define elf_backend_finish_dynamic_symbol \
4598 elf32_frv_finish_dynamic_symbol
4599 #define elf_backend_finish_dynamic_sections \
4600 elf32_frv_finish_dynamic_sections
4601
4602 #define elf_backend_want_got_sym 1
4603 #define elf_backend_got_header_size 0
4604 #define elf_backend_want_got_plt 0
4605 #define elf_backend_plt_readonly 1
4606 #define elf_backend_want_plt_sym 0
4607 #define elf_backend_plt_header_size 0
4608
4609 #define elf_backend_can_make_relative_eh_frame \
4610 frv_elf_use_relative_eh_frame
4611 #define elf_backend_can_make_lsda_relative_eh_frame \
4612 frv_elf_use_relative_eh_frame
4613 #define elf_backend_encode_eh_address frv_elf_encode_eh_address
4614
4615 #define elf_backend_may_use_rel_p 1
4616 #define elf_backend_may_use_rela_p 1
4617 /* We use REL for dynamic relocations only. */
4618 #define elf_backend_default_use_rela_p 1
4619
4620 #include "elf32-target.h"
GDB Binutils - Deliverables
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