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[deliverable/binutils-gdb.git] / bfd / elf32-fr30.c
1 /* FR30-specific support for 32-bit ELF.
2 Copyright (C) 1998-2018 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/fr30.h"
26
27 /* Forward declarations. */
28 static bfd_reloc_status_type
29 fr30_elf_i20_reloc (bfd *, arelent *, asymbol *, void * data,
30 asection *, bfd *, char **error_message);
31 static bfd_reloc_status_type
32 fr30_elf_i32_reloc (bfd *, arelent *, asymbol *, void *,
33 asection *, bfd *, char **);
34
35 static reloc_howto_type fr30_elf_howto_table [] =
36 {
37 /* This reloc does nothing. */
38 HOWTO (R_FR30_NONE, /* type */
39 0, /* rightshift */
40 3, /* size (0 = byte, 1 = short, 2 = long) */
41 0, /* bitsize */
42 FALSE, /* pc_relative */
43 0, /* bitpos */
44 complain_overflow_dont, /* complain_on_overflow */
45 bfd_elf_generic_reloc, /* special_function */
46 "R_FR30_NONE", /* name */
47 FALSE, /* partial_inplace */
48 0, /* src_mask */
49 0, /* dst_mask */
50 FALSE), /* pcrel_offset */
51
52 /* An 8 bit absolute relocation. */
53 HOWTO (R_FR30_8, /* type */
54 0, /* rightshift */
55 1, /* size (0 = byte, 1 = short, 2 = long) */
56 8, /* bitsize */
57 FALSE, /* pc_relative */
58 4, /* bitpos */
59 complain_overflow_bitfield, /* complain_on_overflow */
60 bfd_elf_generic_reloc, /* special_function */
61 "R_FR30_8", /* name */
62 FALSE, /* partial_inplace */
63 0x0000, /* src_mask */
64 0x0ff0, /* dst_mask */
65 FALSE), /* pcrel_offset */
66
67 /* A 20 bit absolute relocation. */
68 HOWTO (R_FR30_20, /* type */
69 0, /* rightshift */
70 2, /* size (0 = byte, 1 = short, 2 = long) */
71 20, /* bitsize */
72 FALSE, /* pc_relative */
73 0, /* bitpos */
74 complain_overflow_bitfield, /* complain_on_overflow */
75 fr30_elf_i20_reloc, /* special_function */
76 "R_FR30_20", /* name */
77 FALSE, /* partial_inplace */
78 0x00000000, /* src_mask */
79 0x00f0ffff, /* dst_mask */
80 FALSE), /* pcrel_offset */
81
82 /* A 32 bit absolute relocation. */
83 HOWTO (R_FR30_32, /* type */
84 0, /* rightshift */
85 2, /* size (0 = byte, 1 = short, 2 = long) */
86 32, /* bitsize */
87 FALSE, /* pc_relative */
88 0, /* bitpos */
89 complain_overflow_bitfield, /* complain_on_overflow */
90 bfd_elf_generic_reloc, /* special_function */
91 "R_FR30_32", /* name */
92 FALSE, /* partial_inplace */
93 0x00000000, /* src_mask */
94 0xffffffff, /* dst_mask */
95 FALSE), /* pcrel_offset */
96
97 /* A 32 bit into 48 bits absolute relocation. */
98 HOWTO (R_FR30_48, /* type */
99 0, /* rightshift */
100 2, /* size (0 = byte, 1 = short, 2 = long) */
101 32, /* bitsize */
102 FALSE, /* pc_relative */
103 0, /* bitpos */
104 complain_overflow_bitfield, /* complain_on_overflow */
105 fr30_elf_i32_reloc, /* special_function */
106 "R_FR30_48", /* name */
107 FALSE, /* partial_inplace */
108 0x00000000, /* src_mask */
109 0xffffffff, /* dst_mask */
110 FALSE), /* pcrel_offset */
111
112 /* A 6 bit absolute relocation. */
113 HOWTO (R_FR30_6_IN_4, /* type */
114 2, /* rightshift */
115 1, /* size (0 = byte, 1 = short, 2 = long) */
116 6, /* bitsize */
117 FALSE, /* pc_relative */
118 4, /* bitpos */
119 complain_overflow_unsigned, /* complain_on_overflow */
120 bfd_elf_generic_reloc, /* special_function */
121 "R_FR30_6_IN_4", /* name */
122 FALSE, /* partial_inplace */
123 0x0000, /* src_mask */
124 0x00f0, /* dst_mask */
125 FALSE), /* pcrel_offset */
126
127 /* An 8 bit absolute relocation. */
128 HOWTO (R_FR30_8_IN_8, /* type */
129 0, /* rightshift */
130 1, /* size (0 = byte, 1 = short, 2 = long) */
131 8, /* bitsize */
132 FALSE, /* pc_relative */
133 4, /* bitpos */
134 complain_overflow_signed, /* complain_on_overflow */
135 bfd_elf_generic_reloc,/* special_function */
136 "R_FR30_8_IN_8", /* name */
137 FALSE, /* partial_inplace */
138 0x0000, /* src_mask */
139 0x0ff0, /* dst_mask */
140 FALSE), /* pcrel_offset */
141
142 /* A 9 bit absolute relocation. */
143 HOWTO (R_FR30_9_IN_8, /* type */
144 1, /* rightshift */
145 1, /* size (0 = byte, 1 = short, 2 = long) */
146 9, /* bitsize */
147 FALSE, /* pc_relative */
148 4, /* bitpos */
149 complain_overflow_signed, /* complain_on_overflow */
150 bfd_elf_generic_reloc,/* special_function */
151 "R_FR30_9_IN_8", /* name */
152 FALSE, /* partial_inplace */
153 0x0000, /* src_mask */
154 0x0ff0, /* dst_mask */
155 FALSE), /* pcrel_offset */
156
157 /* A 10 bit absolute relocation. */
158 HOWTO (R_FR30_10_IN_8, /* type */
159 2, /* rightshift */
160 1, /* size (0 = byte, 1 = short, 2 = long) */
161 10, /* bitsize */
162 FALSE, /* pc_relative */
163 4, /* bitpos */
164 complain_overflow_signed, /* complain_on_overflow */
165 bfd_elf_generic_reloc,/* special_function */
166 "R_FR30_10_IN_8", /* name */
167 FALSE, /* partial_inplace */
168 0x0000, /* src_mask */
169 0x0ff0, /* dst_mask */
170 FALSE), /* pcrel_offset */
171
172 /* A PC relative 9 bit relocation, right shifted by 1. */
173 HOWTO (R_FR30_9_PCREL, /* type */
174 1, /* rightshift */
175 1, /* size (0 = byte, 1 = short, 2 = long) */
176 9, /* bitsize */
177 TRUE, /* pc_relative */
178 0, /* bitpos */
179 complain_overflow_signed, /* complain_on_overflow */
180 bfd_elf_generic_reloc, /* special_function */
181 "R_FR30_9_PCREL", /* name */
182 FALSE, /* partial_inplace */
183 0x0000, /* src_mask */
184 0x00ff, /* dst_mask */
185 FALSE), /* pcrel_offset */
186
187 /* A PC relative 12 bit relocation, right shifted by 1. */
188 HOWTO (R_FR30_12_PCREL, /* type */
189 1, /* rightshift */
190 1, /* size (0 = byte, 1 = short, 2 = long) */
191 12, /* bitsize */
192 TRUE, /* pc_relative */
193 0, /* bitpos */
194 complain_overflow_signed, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_FR30_12_PCREL", /* name */
197 FALSE, /* partial_inplace */
198 0x0000, /* src_mask */
199 0x07ff, /* dst_mask */
200 FALSE), /* pcrel_offset */
201 /* GNU extension to record C++ vtable hierarchy */
202 HOWTO (R_FR30_GNU_VTINHERIT, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 0, /* bitsize */
206 FALSE, /* pc_relative */
207 0, /* bitpos */
208 complain_overflow_dont, /* complain_on_overflow */
209 NULL, /* special_function */
210 "R_FR30_GNU_VTINHERIT", /* name */
211 FALSE, /* partial_inplace */
212 0, /* src_mask */
213 0, /* dst_mask */
214 FALSE), /* pcrel_offset */
215
216 /* GNU extension to record C++ vtable member usage */
217 HOWTO (R_FR30_GNU_VTENTRY, /* type */
218 0, /* rightshift */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
220 0, /* bitsize */
221 FALSE, /* pc_relative */
222 0, /* bitpos */
223 complain_overflow_dont, /* complain_on_overflow */
224 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
225 "R_FR30_GNU_VTENTRY", /* name */
226 FALSE, /* partial_inplace */
227 0, /* src_mask */
228 0, /* dst_mask */
229 FALSE), /* pcrel_offset */
230 };
231 \f
232 /* Utility to actually perform an R_FR30_20 reloc. */
233
234 static bfd_reloc_status_type
235 fr30_elf_i20_reloc (bfd *abfd,
236 arelent *reloc_entry,
237 asymbol *symbol,
238 void * data,
239 asection *input_section,
240 bfd *output_bfd,
241 char **error_message ATTRIBUTE_UNUSED)
242 {
243 bfd_vma relocation;
244 unsigned long x;
245
246 /* This part is from bfd_elf_generic_reloc. */
247 if (output_bfd != (bfd *) NULL
248 && (symbol->flags & BSF_SECTION_SYM) == 0
249 && (! reloc_entry->howto->partial_inplace
250 || reloc_entry->addend == 0))
251 {
252 reloc_entry->address += input_section->output_offset;
253 return bfd_reloc_ok;
254 }
255
256 if (output_bfd != NULL)
257 /* FIXME: See bfd_perform_relocation. Is this right? */
258 return bfd_reloc_ok;
259
260 relocation =
261 symbol->value
262 + symbol->section->output_section->vma
263 + symbol->section->output_offset
264 + reloc_entry->addend;
265
266 if (relocation > (((bfd_vma) 1 << 20) - 1))
267 return bfd_reloc_overflow;
268
269 x = bfd_get_32 (abfd, (char *) data + reloc_entry->address);
270 x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
271 bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address);
272
273 return bfd_reloc_ok;
274 }
275 \f
276 /* Utility to actually perform a R_FR30_48 reloc. */
277
278 static bfd_reloc_status_type
279 fr30_elf_i32_reloc (bfd *abfd,
280 arelent *reloc_entry,
281 asymbol *symbol,
282 void * data,
283 asection *input_section,
284 bfd *output_bfd,
285 char **error_message ATTRIBUTE_UNUSED)
286 {
287 bfd_vma relocation;
288
289 /* This part is from bfd_elf_generic_reloc. */
290 if (output_bfd != (bfd *) NULL
291 && (symbol->flags & BSF_SECTION_SYM) == 0
292 && (! reloc_entry->howto->partial_inplace
293 || reloc_entry->addend == 0))
294 {
295 reloc_entry->address += input_section->output_offset;
296 return bfd_reloc_ok;
297 }
298
299 if (output_bfd != NULL)
300 /* FIXME: See bfd_perform_relocation. Is this right? */
301 return bfd_reloc_ok;
302
303 relocation =
304 symbol->value
305 + symbol->section->output_section->vma
306 + symbol->section->output_offset
307 + reloc_entry->addend;
308
309 bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2);
310
311 return bfd_reloc_ok;
312 }
313 \f
314 /* Map BFD reloc types to FR30 ELF reloc types. */
315
316 struct fr30_reloc_map
317 {
318 bfd_reloc_code_real_type bfd_reloc_val;
319 unsigned int fr30_reloc_val;
320 };
321
322 static const struct fr30_reloc_map fr30_reloc_map [] =
323 {
324 { BFD_RELOC_NONE, R_FR30_NONE },
325 { BFD_RELOC_8, R_FR30_8 },
326 { BFD_RELOC_FR30_20, R_FR30_20 },
327 { BFD_RELOC_32, R_FR30_32 },
328 { BFD_RELOC_FR30_48, R_FR30_48 },
329 { BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 },
330 { BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 },
331 { BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 },
332 { BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 },
333 { BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL },
334 { BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL },
335 { BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT },
336 { BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY },
337 };
338
339 static reloc_howto_type *
340 fr30_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
341 bfd_reloc_code_real_type code)
342 {
343 unsigned int i;
344
345 for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]);
346 i--;)
347 if (fr30_reloc_map [i].bfd_reloc_val == code)
348 return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val];
349
350 return NULL;
351 }
352
353 static reloc_howto_type *
354 fr30_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
355 {
356 unsigned int i;
357
358 for (i = 0;
359 i < sizeof (fr30_elf_howto_table) / sizeof (fr30_elf_howto_table[0]);
360 i++)
361 if (fr30_elf_howto_table[i].name != NULL
362 && strcasecmp (fr30_elf_howto_table[i].name, r_name) == 0)
363 return &fr30_elf_howto_table[i];
364
365 return NULL;
366 }
367
368 /* Set the howto pointer for an FR30 ELF reloc. */
369
370 static void
371 fr30_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
372 arelent *cache_ptr,
373 Elf_Internal_Rela *dst)
374 {
375 unsigned int r_type;
376
377 r_type = ELF32_R_TYPE (dst->r_info);
378 if (r_type >= (unsigned int) R_FR30_max)
379 {
380 /* xgettext:c-format */
381 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
382 abfd, r_type);
383 r_type = 0;
384 }
385 cache_ptr->howto = & fr30_elf_howto_table [r_type];
386 }
387 \f
388 /* Perform a single relocation. By default we use the standard BFD
389 routines, but a few relocs, we have to do them ourselves. */
390
391 static bfd_reloc_status_type
392 fr30_final_link_relocate (reloc_howto_type *howto,
393 bfd *input_bfd,
394 asection *input_section,
395 bfd_byte *contents,
396 Elf_Internal_Rela *rel,
397 bfd_vma relocation)
398 {
399 bfd_reloc_status_type r = bfd_reloc_ok;
400 bfd_vma x;
401 bfd_signed_vma srel;
402
403 switch (howto->type)
404 {
405 case R_FR30_20:
406 contents += rel->r_offset;
407 relocation += rel->r_addend;
408
409 if (relocation > ((1 << 20) - 1))
410 return bfd_reloc_overflow;
411
412 x = bfd_get_32 (input_bfd, contents);
413 x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
414 bfd_put_32 (input_bfd, x, contents);
415 break;
416
417 case R_FR30_48:
418 contents += rel->r_offset + 2;
419 relocation += rel->r_addend;
420 bfd_put_32 (input_bfd, relocation, contents);
421 break;
422
423 case R_FR30_9_PCREL:
424 contents += rel->r_offset + 1;
425 srel = (bfd_signed_vma) relocation;
426 srel += rel->r_addend;
427 srel -= rel->r_offset;
428 srel -= 2; /* Branch instructions add 2 to the PC... */
429 srel -= (input_section->output_section->vma +
430 input_section->output_offset);
431
432 if (srel & 1)
433 return bfd_reloc_outofrange;
434 if (srel > ((1 << 8) - 1) || (srel < - (1 << 8)))
435 return bfd_reloc_overflow;
436
437 bfd_put_8 (input_bfd, srel >> 1, contents);
438 break;
439
440 case R_FR30_12_PCREL:
441 contents += rel->r_offset;
442 srel = (bfd_signed_vma) relocation;
443 srel += rel->r_addend;
444 srel -= rel->r_offset;
445 srel -= 2; /* Branch instructions add 2 to the PC... */
446 srel -= (input_section->output_section->vma +
447 input_section->output_offset);
448
449 if (srel & 1)
450 return bfd_reloc_outofrange;
451 if (srel > ((1 << 11) - 1) || (srel < - (1 << 11)))
452 return bfd_reloc_overflow;
453
454 x = bfd_get_16 (input_bfd, contents);
455 x = (x & 0xf800) | ((srel >> 1) & 0x7ff);
456 bfd_put_16 (input_bfd, x, contents);
457 break;
458
459 default:
460 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
461 contents, rel->r_offset,
462 relocation, rel->r_addend);
463 }
464
465 return r;
466 }
467 \f
468 /* Relocate an FR30 ELF section.
469
470 The RELOCATE_SECTION function is called by the new ELF backend linker
471 to handle the relocations for a section.
472
473 The relocs are always passed as Rela structures; if the section
474 actually uses Rel structures, the r_addend field will always be
475 zero.
476
477 This function is responsible for adjusting the section contents as
478 necessary, and (if using Rela relocs and generating a relocatable
479 output file) adjusting the reloc addend as necessary.
480
481 This function does not have to worry about setting the reloc
482 address or the reloc symbol index.
483
484 LOCAL_SYMS is a pointer to the swapped in local symbols.
485
486 LOCAL_SECTIONS is an array giving the section in the input file
487 corresponding to the st_shndx field of each local symbol.
488
489 The global hash table entry for the global symbols can be found
490 via elf_sym_hashes (input_bfd).
491
492 When generating relocatable output, this function must handle
493 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
494 going to be the section symbol corresponding to the output
495 section, which means that the addend must be adjusted
496 accordingly. */
497
498 static bfd_boolean
499 fr30_elf_relocate_section (bfd *output_bfd,
500 struct bfd_link_info *info,
501 bfd *input_bfd,
502 asection *input_section,
503 bfd_byte *contents,
504 Elf_Internal_Rela *relocs,
505 Elf_Internal_Sym *local_syms,
506 asection **local_sections)
507 {
508 Elf_Internal_Shdr *symtab_hdr;
509 struct elf_link_hash_entry **sym_hashes;
510 Elf_Internal_Rela *rel;
511 Elf_Internal_Rela *relend;
512
513 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
514 sym_hashes = elf_sym_hashes (input_bfd);
515 relend = relocs + input_section->reloc_count;
516
517 for (rel = relocs; rel < relend; rel ++)
518 {
519 reloc_howto_type *howto;
520 unsigned long r_symndx;
521 Elf_Internal_Sym *sym;
522 asection *sec;
523 struct elf_link_hash_entry *h;
524 bfd_vma relocation;
525 bfd_reloc_status_type r;
526 const char *name;
527 int r_type;
528
529 r_type = ELF32_R_TYPE (rel->r_info);
530
531 if ( r_type == R_FR30_GNU_VTINHERIT
532 || r_type == R_FR30_GNU_VTENTRY)
533 continue;
534
535 r_symndx = ELF32_R_SYM (rel->r_info);
536
537 howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info);
538 h = NULL;
539 sym = NULL;
540 sec = NULL;
541
542 if (r_symndx < symtab_hdr->sh_info)
543 {
544 sym = local_syms + r_symndx;
545 sec = local_sections [r_symndx];
546 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
547
548 name = bfd_elf_string_from_elf_section
549 (input_bfd, symtab_hdr->sh_link, sym->st_name);
550 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
551 }
552 else
553 {
554 bfd_boolean unresolved_reloc, warned, ignored;
555
556 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
557 r_symndx, symtab_hdr, sym_hashes,
558 h, sec, relocation,
559 unresolved_reloc, warned, ignored);
560
561 name = h->root.root.string;
562 }
563
564 if (sec != NULL && discarded_section (sec))
565 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
566 rel, 1, relend, howto, 0, contents);
567
568 if (bfd_link_relocatable (info))
569 continue;
570
571 r = fr30_final_link_relocate (howto, input_bfd, input_section,
572 contents, rel, relocation);
573
574 if (r != bfd_reloc_ok)
575 {
576 const char * msg = (const char *) NULL;
577
578 switch (r)
579 {
580 case bfd_reloc_overflow:
581 (*info->callbacks->reloc_overflow)
582 (info, (h ? &h->root : NULL), name, howto->name,
583 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
584 break;
585
586 case bfd_reloc_undefined:
587 (*info->callbacks->undefined_symbol)
588 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
589 break;
590
591 case bfd_reloc_outofrange:
592 msg = _("internal error: out of range error");
593 break;
594
595 case bfd_reloc_notsupported:
596 msg = _("internal error: unsupported relocation error");
597 break;
598
599 case bfd_reloc_dangerous:
600 msg = _("internal error: dangerous relocation");
601 break;
602
603 default:
604 msg = _("internal error: unknown error");
605 break;
606 }
607
608 if (msg)
609 (*info->callbacks->warning) (info, msg, name, input_bfd,
610 input_section, rel->r_offset);
611 }
612 }
613
614 return TRUE;
615 }
616 \f
617 /* Return the section that should be marked against GC for a given
618 relocation. */
619
620 static asection *
621 fr30_elf_gc_mark_hook (asection *sec,
622 struct bfd_link_info *info,
623 Elf_Internal_Rela *rel,
624 struct elf_link_hash_entry *h,
625 Elf_Internal_Sym *sym)
626 {
627 if (h != NULL)
628 switch (ELF32_R_TYPE (rel->r_info))
629 {
630 case R_FR30_GNU_VTINHERIT:
631 case R_FR30_GNU_VTENTRY:
632 return NULL;
633 }
634
635 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
636 }
637
638 /* Look through the relocs for a section during the first phase.
639 Since we don't do .gots or .plts, we just need to consider the
640 virtual table relocs for gc. */
641
642 static bfd_boolean
643 fr30_elf_check_relocs (bfd *abfd,
644 struct bfd_link_info *info,
645 asection *sec,
646 const Elf_Internal_Rela *relocs)
647 {
648 Elf_Internal_Shdr *symtab_hdr;
649 struct elf_link_hash_entry **sym_hashes;
650 const Elf_Internal_Rela *rel;
651 const Elf_Internal_Rela *rel_end;
652
653 if (bfd_link_relocatable (info))
654 return TRUE;
655
656 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
657 sym_hashes = elf_sym_hashes (abfd);
658
659 rel_end = relocs + sec->reloc_count;
660 for (rel = relocs; rel < rel_end; rel++)
661 {
662 struct elf_link_hash_entry *h;
663 unsigned long r_symndx;
664
665 r_symndx = ELF32_R_SYM (rel->r_info);
666 if (r_symndx < symtab_hdr->sh_info)
667 h = NULL;
668 else
669 {
670 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
671 while (h->root.type == bfd_link_hash_indirect
672 || h->root.type == bfd_link_hash_warning)
673 h = (struct elf_link_hash_entry *) h->root.u.i.link;
674 }
675
676 switch (ELF32_R_TYPE (rel->r_info))
677 {
678 /* This relocation describes the C++ object vtable hierarchy.
679 Reconstruct it for later use during GC. */
680 case R_FR30_GNU_VTINHERIT:
681 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
682 return FALSE;
683 break;
684
685 /* This relocation describes which C++ vtable entries are actually
686 used. Record for later use during GC. */
687 case R_FR30_GNU_VTENTRY:
688 BFD_ASSERT (h != NULL);
689 if (h != NULL
690 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
691 return FALSE;
692 break;
693 }
694 }
695
696 return TRUE;
697 }
698 \f
699 #define ELF_ARCH bfd_arch_fr30
700 #define ELF_MACHINE_CODE EM_FR30
701 #define ELF_MACHINE_ALT1 EM_CYGNUS_FR30
702 #define ELF_MAXPAGESIZE 0x1000
703
704 #define TARGET_BIG_SYM fr30_elf32_vec
705 #define TARGET_BIG_NAME "elf32-fr30"
706
707 #define elf_info_to_howto_rel NULL
708 #define elf_info_to_howto fr30_info_to_howto_rela
709 #define elf_backend_relocate_section fr30_elf_relocate_section
710 #define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook
711 #define elf_backend_check_relocs fr30_elf_check_relocs
712
713 #define elf_backend_can_gc_sections 1
714 #define elf_backend_rela_normal 1
715
716 #define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup
717 #define bfd_elf32_bfd_reloc_name_lookup fr30_reloc_name_lookup
718
719 #include "elf32-target.h"
GDB Binutils - Deliverables
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