1 /* FR30-specific support for 32-bit ELF. 2 Copyright (C) 1998-2014 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 2, /* size (0 = byte, 1 = short, 2 = long) */ 41 32, /* bitsize */ 42 FALSE, /* pc_relative */ 43 0, /* bitpos */ 44 complain_overflow_bitfield, /* 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 }; 231 232 /* Utility to actually perform an R_FR30_20 reloc. */ 234 235 static bfd_reloc_status_type 236 fr30_elf_i20_reloc (bfd *abfd, 237 arelent *reloc_entry, 238 asymbol *symbol, 239 void * data, 240 asection *input_section, 241 bfd *output_bfd, 242 char **error_message ATTRIBUTE_UNUSED) 243 { 244 bfd_vma relocation; 245 unsigned long x; 246 247 /* This part is from bfd_elf_generic_reloc. */ 248 if (output_bfd != (bfd *) NULL 249 && (symbol->flags & BSF_SECTION_SYM) == 0 250 && (! reloc_entry->howto->partial_inplace 251 || reloc_entry->addend == 0)) 252 { 253 reloc_entry->address += input_section->output_offset; 254 return bfd_reloc_ok; 255 } 256 257 if (output_bfd != NULL) 258 /* FIXME: See bfd_perform_relocation. Is this right? */ 259 return bfd_reloc_ok; 260 261 relocation = 262 symbol->value 263 + symbol->section->output_section->vma 264 + symbol->section->output_offset 265 + reloc_entry->addend; 266 267 if (relocation > (((bfd_vma) 1 << 20) - 1)) 268 return bfd_reloc_overflow; 269 270 x = bfd_get_32 (abfd, (char *) data + reloc_entry->address); 271 x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); 272 bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address); 273 274 return bfd_reloc_ok; 275 } 276 277 /* Utility to actually perform a R_FR30_48 reloc. */ 279 280 static bfd_reloc_status_type 281 fr30_elf_i32_reloc (bfd *abfd, 282 arelent *reloc_entry, 283 asymbol *symbol, 284 void * data, 285 asection *input_section, 286 bfd *output_bfd, 287 char **error_message ATTRIBUTE_UNUSED) 288 { 289 bfd_vma relocation; 290 291 /* This part is from bfd_elf_generic_reloc. */ 292 if (output_bfd != (bfd *) NULL 293 && (symbol->flags & BSF_SECTION_SYM) == 0 294 && (! reloc_entry->howto->partial_inplace 295 || reloc_entry->addend == 0)) 296 { 297 reloc_entry->address += input_section->output_offset; 298 return bfd_reloc_ok; 299 } 300 301 if (output_bfd != NULL) 302 /* FIXME: See bfd_perform_relocation. Is this right? */ 303 return bfd_reloc_ok; 304 305 relocation = 306 symbol->value 307 + symbol->section->output_section->vma 308 + symbol->section->output_offset 309 + reloc_entry->addend; 310 311 bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2); 312 313 return bfd_reloc_ok; 314 } 315 316 /* Map BFD reloc types to FR30 ELF reloc types. */ 318 319 struct fr30_reloc_map 320 { 321 bfd_reloc_code_real_type bfd_reloc_val; 322 unsigned int fr30_reloc_val; 323 }; 324 325 static const struct fr30_reloc_map fr30_reloc_map [] = 326 { 327 { BFD_RELOC_NONE, R_FR30_NONE }, 328 { BFD_RELOC_8, R_FR30_8 }, 329 { BFD_RELOC_FR30_20, R_FR30_20 }, 330 { BFD_RELOC_32, R_FR30_32 }, 331 { BFD_RELOC_FR30_48, R_FR30_48 }, 332 { BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 }, 333 { BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 }, 334 { BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 }, 335 { BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 }, 336 { BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL }, 337 { BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL }, 338 { BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT }, 339 { BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY }, 340 }; 341 342 static reloc_howto_type * 343 fr30_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 344 bfd_reloc_code_real_type code) 345 { 346 unsigned int i; 347 348 for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]); 349 --i;) 350 if (fr30_reloc_map [i].bfd_reloc_val == code) 351 return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val]; 352 353 return NULL; 354 } 355 356 static reloc_howto_type * 357 fr30_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) 358 { 359 unsigned int i; 360 361 for (i = 0; 362 i < sizeof (fr30_elf_howto_table) / sizeof (fr30_elf_howto_table[0]); 363 i++) 364 if (fr30_elf_howto_table[i].name != NULL 365 && strcasecmp (fr30_elf_howto_table[i].name, r_name) == 0) 366 return &fr30_elf_howto_table[i]; 367 368 return NULL; 369 } 370 371 /* Set the howto pointer for an FR30 ELF reloc. */ 372 373 static void 374 fr30_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, 375 arelent *cache_ptr, 376 Elf_Internal_Rela *dst) 377 { 378 unsigned int r_type; 379 380 r_type = ELF32_R_TYPE (dst->r_info); 381 BFD_ASSERT (r_type < (unsigned int) R_FR30_max); 382 cache_ptr->howto = & fr30_elf_howto_table [r_type]; 383 } 384 385 /* Perform a single relocation. By default we use the standard BFD 387 routines, but a few relocs, we have to do them ourselves. */ 388 389 static bfd_reloc_status_type 390 fr30_final_link_relocate (reloc_howto_type *howto, 391 bfd *input_bfd, 392 asection *input_section, 393 bfd_byte *contents, 394 Elf_Internal_Rela *rel, 395 bfd_vma relocation) 396 { 397 bfd_reloc_status_type r = bfd_reloc_ok; 398 bfd_vma x; 399 bfd_signed_vma srel; 400 401 switch (howto->type) 402 { 403 case R_FR30_20: 404 contents += rel->r_offset; 405 relocation += rel->r_addend; 406 407 if (relocation > ((1 << 20) - 1)) 408 return bfd_reloc_overflow; 409 410 x = bfd_get_32 (input_bfd, contents); 411 x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); 412 bfd_put_32 (input_bfd, x, contents); 413 break; 414 415 case R_FR30_48: 416 contents += rel->r_offset + 2; 417 relocation += rel->r_addend; 418 bfd_put_32 (input_bfd, relocation, contents); 419 break; 420 421 case R_FR30_9_PCREL: 422 contents += rel->r_offset + 1; 423 srel = (bfd_signed_vma) relocation; 424 srel += rel->r_addend; 425 srel -= rel->r_offset; 426 srel -= 2; /* Branch instructions add 2 to the PC... */ 427 srel -= (input_section->output_section->vma + 428 input_section->output_offset); 429 430 if (srel & 1) 431 return bfd_reloc_outofrange; 432 if (srel > ((1 << 8) - 1) || (srel < - (1 << 8))) 433 return bfd_reloc_overflow; 434 435 bfd_put_8 (input_bfd, srel >> 1, contents); 436 break; 437 438 case R_FR30_12_PCREL: 439 contents += rel->r_offset; 440 srel = (bfd_signed_vma) relocation; 441 srel += rel->r_addend; 442 srel -= rel->r_offset; 443 srel -= 2; /* Branch instructions add 2 to the PC... */ 444 srel -= (input_section->output_section->vma + 445 input_section->output_offset); 446 447 if (srel & 1) 448 return bfd_reloc_outofrange; 449 if (srel > ((1 << 11) - 1) || (srel < - (1 << 11))) 450 return bfd_reloc_overflow; 451 452 x = bfd_get_16 (input_bfd, contents); 453 x = (x & 0xf800) | ((srel >> 1) & 0x7ff); 454 bfd_put_16 (input_bfd, x, contents); 455 break; 456 457 default: 458 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 459 contents, rel->r_offset, 460 relocation, rel->r_addend); 461 } 462 463 return r; 464 } 465 466 /* Relocate an FR30 ELF section. 468 469 The RELOCATE_SECTION function is called by the new ELF backend linker 470 to handle the relocations for a section. 471 472 The relocs are always passed as Rela structures; if the section 473 actually uses Rel structures, the r_addend field will always be 474 zero. 475 476 This function is responsible for adjusting the section contents as 477 necessary, and (if using Rela relocs and generating a relocatable 478 output file) adjusting the reloc addend as necessary. 479 480 This function does not have to worry about setting the reloc 481 address or the reloc symbol index. 482 483 LOCAL_SYMS is a pointer to the swapped in local symbols. 484 485 LOCAL_SECTIONS is an array giving the section in the input file 486 corresponding to the st_shndx field of each local symbol. 487 488 The global hash table entry for the global symbols can be found 489 via elf_sym_hashes (input_bfd). 490 491 When generating relocatable output, this function must handle 492 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 493 going to be the section symbol corresponding to the output 494 section, which means that the addend must be adjusted 495 accordingly. */ 496 497 static bfd_boolean 498 fr30_elf_relocate_section (bfd *output_bfd, 499 struct bfd_link_info *info, 500 bfd *input_bfd, 501 asection *input_section, 502 bfd_byte *contents, 503 Elf_Internal_Rela *relocs, 504 Elf_Internal_Sym *local_syms, 505 asection **local_sections) 506 { 507 Elf_Internal_Shdr *symtab_hdr; 508 struct elf_link_hash_entry **sym_hashes; 509 Elf_Internal_Rela *rel; 510 Elf_Internal_Rela *relend; 511 512 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; 513 sym_hashes = elf_sym_hashes (input_bfd); 514 relend = relocs + input_section->reloc_count; 515 516 for (rel = relocs; rel < relend; rel ++) 517 { 518 reloc_howto_type *howto; 519 unsigned long r_symndx; 520 Elf_Internal_Sym *sym; 521 asection *sec; 522 struct elf_link_hash_entry *h; 523 bfd_vma relocation; 524 bfd_reloc_status_type r; 525 const char *name; 526 int r_type; 527 528 r_type = ELF32_R_TYPE (rel->r_info); 529 530 if ( r_type == R_FR30_GNU_VTINHERIT 531 || r_type == R_FR30_GNU_VTENTRY) 532 continue; 533 534 r_symndx = ELF32_R_SYM (rel->r_info); 535 536 howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info); 537 h = NULL; 538 sym = NULL; 539 sec = NULL; 540 541 if (r_symndx < symtab_hdr->sh_info) 542 { 543 sym = local_syms + r_symndx; 544 sec = local_sections [r_symndx]; 545 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 546 547 name = bfd_elf_string_from_elf_section 548 (input_bfd, symtab_hdr->sh_link, sym->st_name); 549 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; 550 } 551 else 552 { 553 bfd_boolean unresolved_reloc, warned, ignored; 554 555 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 556 r_symndx, symtab_hdr, sym_hashes, 557 h, sec, relocation, 558 unresolved_reloc, warned, ignored); 559 560 name = h->root.root.string; 561 } 562 563 if (sec != NULL && discarded_section (sec)) 564 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 565 rel, 1, relend, howto, 0, contents); 566 567 if (info->relocatable) 568 continue; 569 570 r = fr30_final_link_relocate (howto, input_bfd, input_section, 571 contents, rel, relocation); 572 573 if (r != bfd_reloc_ok) 574 { 575 const char * msg = (const char *) NULL; 576 577 switch (r) 578 { 579 case bfd_reloc_overflow: 580 r = info->callbacks->reloc_overflow 581 (info, (h ? &h->root : NULL), name, howto->name, 582 (bfd_vma) 0, input_bfd, input_section, rel->r_offset); 583 break; 584 585 case bfd_reloc_undefined: 586 r = info->callbacks->undefined_symbol 587 (info, name, input_bfd, input_section, rel->r_offset, 588 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 r = info->callbacks->warning 610 (info, msg, name, input_bfd, input_section, rel->r_offset); 611 612 if (! r) 613 return FALSE; 614 } 615 } 616 617 return TRUE; 618 } 619 620 /* Return the section that should be marked against GC for a given 622 relocation. */ 623 624 static asection * 625 fr30_elf_gc_mark_hook (asection *sec, 626 struct bfd_link_info *info, 627 Elf_Internal_Rela *rel, 628 struct elf_link_hash_entry *h, 629 Elf_Internal_Sym *sym) 630 { 631 if (h != NULL) 632 switch (ELF32_R_TYPE (rel->r_info)) 633 { 634 case R_FR30_GNU_VTINHERIT: 635 case R_FR30_GNU_VTENTRY: 636 return NULL; 637 } 638 639 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 640 } 641 642 /* Look through the relocs for a section during the first phase. 643 Since we don't do .gots or .plts, we just need to consider the 644 virtual table relocs for gc. */ 645 646 static bfd_boolean 647 fr30_elf_check_relocs (bfd *abfd, 648 struct bfd_link_info *info, 649 asection *sec, 650 const Elf_Internal_Rela *relocs) 651 { 652 Elf_Internal_Shdr *symtab_hdr; 653 struct elf_link_hash_entry **sym_hashes; 654 const Elf_Internal_Rela *rel; 655 const Elf_Internal_Rela *rel_end; 656 657 if (info->relocatable) 658 return TRUE; 659 660 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 661 sym_hashes = elf_sym_hashes (abfd); 662 663 rel_end = relocs + sec->reloc_count; 664 for (rel = relocs; rel < rel_end; rel++) 665 { 666 struct elf_link_hash_entry *h; 667 unsigned long r_symndx; 668 669 r_symndx = ELF32_R_SYM (rel->r_info); 670 if (r_symndx < symtab_hdr->sh_info) 671 h = NULL; 672 else 673 { 674 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 675 while (h->root.type == bfd_link_hash_indirect 676 || h->root.type == bfd_link_hash_warning) 677 h = (struct elf_link_hash_entry *) h->root.u.i.link; 678 679 /* PR15323, ref flags aren't set for references in the same 680 object. */ 681 h->root.non_ir_ref = 1; 682 } 683 684 switch (ELF32_R_TYPE (rel->r_info)) 685 { 686 /* This relocation describes the C++ object vtable hierarchy. 687 Reconstruct it for later use during GC. */ 688 case R_FR30_GNU_VTINHERIT: 689 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 690 return FALSE; 691 break; 692 693 /* This relocation describes which C++ vtable entries are actually 694 used. Record for later use during GC. */ 695 case R_FR30_GNU_VTENTRY: 696 BFD_ASSERT (h != NULL); 697 if (h != NULL 698 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 699 return FALSE; 700 break; 701 } 702 } 703 704 return TRUE; 705 } 706 707 #define ELF_ARCH bfd_arch_fr30 709 #define ELF_MACHINE_CODE EM_FR30 710 #define ELF_MACHINE_ALT1 EM_CYGNUS_FR30 711 #define ELF_MAXPAGESIZE 0x1000 712 713 #define TARGET_BIG_SYM fr30_elf32_vec 714 #define TARGET_BIG_NAME "elf32-fr30" 715 716 #define elf_info_to_howto_rel NULL 717 #define elf_info_to_howto fr30_info_to_howto_rela 718 #define elf_backend_relocate_section fr30_elf_relocate_section 719 #define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook 720 #define elf_backend_check_relocs fr30_elf_check_relocs 721 722 #define elf_backend_can_gc_sections 1 723 #define elf_backend_rela_normal 1 724 725 #define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup 726 #define bfd_elf32_bfd_reloc_name_lookup fr30_reloc_name_lookup 727 728 #include "elf32-target.h" 729
