1/* SPARC-specific support for 64-bit ELF 2 Copyright (C) 1993-2017 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/sparc.h" 26#include "opcode/sparc.h" 27#include "elfxx-sparc.h" 28 29/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ 30#define MINUS_ONE (~ (bfd_vma) 0) 31 32/* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA 33 section can represent up to two relocs, we must tell the user to allocate 34 more space. */ 35 36static long 37elf64_sparc_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) 38{ 39 return (sec->reloc_count * 2 + 1) * sizeof (arelent *); 40} 41 42static long 43elf64_sparc_get_dynamic_reloc_upper_bound (bfd *abfd) 44{ 45 return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2; 46} 47 48/* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of 49 them. We cannot use generic elf routines for this, because R_SPARC_OLO10 50 has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations 51 for the same location, R_SPARC_LO10 and R_SPARC_13. */ 52 53static bfd_boolean 54elf64_sparc_slurp_one_reloc_table (bfd *abfd, asection *asect, 55 Elf_Internal_Shdr *rel_hdr, 56 asymbol **symbols, bfd_boolean dynamic) 57{ 58 void * allocated = NULL; 59 bfd_byte *native_relocs; 60 arelent *relent; 61 unsigned int i; 62 int entsize; 63 bfd_size_type count; 64 arelent *relents; 65 66 allocated = bfd_malloc (rel_hdr->sh_size); 67 if (allocated == NULL) 68 goto error_return; 69 70 if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 71 || bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size) 72 goto error_return; 73 74 native_relocs = (bfd_byte *) allocated; 75 76 relents = asect->relocation + canon_reloc_count (asect); 77 78 entsize = rel_hdr->sh_entsize; 79 BFD_ASSERT (entsize == sizeof (Elf64_External_Rela)); 80 81 count = rel_hdr->sh_size / entsize; 82 83 for (i = 0, relent = relents; i < count; 84 i++, relent++, native_relocs += entsize) 85 { 86 Elf_Internal_Rela rela; 87 unsigned int r_type; 88 89 bfd_elf64_swap_reloca_in (abfd, native_relocs, &rela); 90 91 /* The address of an ELF reloc is section relative for an object 92 file, and absolute for an executable file or shared library. 93 The address of a normal BFD reloc is always section relative, 94 and the address of a dynamic reloc is absolute.. */ 95 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) 96 relent->address = rela.r_offset; 97 else 98 relent->address = rela.r_offset - asect->vma; 99 100 if (ELF64_R_SYM (rela.r_info) == STN_UNDEF 101 /* PR 17512: file: 996185f8. */ 102 || ELF64_R_SYM (rela.r_info) > bfd_get_symcount (abfd)) 103 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 104 else 105 { 106 asymbol **ps, *s; 107 108 ps = symbols + ELF64_R_SYM (rela.r_info) - 1; 109 s = *ps; 110 111 /* Canonicalize ELF section symbols. FIXME: Why? */ 112 if ((s->flags & BSF_SECTION_SYM) == 0) 113 relent->sym_ptr_ptr = ps; 114 else 115 relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; 116 } 117 118 relent->addend = rela.r_addend; 119 120 r_type = ELF64_R_TYPE_ID (rela.r_info); 121 if (r_type == R_SPARC_OLO10) 122 { 123 relent->howto = _bfd_sparc_elf_info_to_howto_ptr (R_SPARC_LO10); 124 relent[1].address = relent->address; 125 relent++; 126 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 127 relent->addend = ELF64_R_TYPE_DATA (rela.r_info); 128 relent->howto = _bfd_sparc_elf_info_to_howto_ptr (R_SPARC_13); 129 } 130 else 131 relent->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type); 132 } 133 134 canon_reloc_count (asect) += relent - relents; 135 136 if (allocated != NULL) 137 free (allocated); 138 139 return TRUE; 140 141 error_return: 142 if (allocated != NULL) 143 free (allocated); 144 return FALSE; 145} 146 147/* Read in and swap the external relocs. */ 148 149static bfd_boolean 150elf64_sparc_slurp_reloc_table (bfd *abfd, asection *asect, 151 asymbol **symbols, bfd_boolean dynamic) 152{ 153 struct bfd_elf_section_data * const d = elf_section_data (asect); 154 Elf_Internal_Shdr *rel_hdr; 155 Elf_Internal_Shdr *rel_hdr2; 156 bfd_size_type amt; 157 158 if (asect->relocation != NULL) 159 return TRUE; 160 161 if (! dynamic) 162 { 163 if ((asect->flags & SEC_RELOC) == 0 164 || asect->reloc_count == 0) 165 return TRUE; 166 167 rel_hdr = d->rel.hdr; 168 rel_hdr2 = d->rela.hdr; 169 170 BFD_ASSERT ((rel_hdr && asect->rel_filepos == rel_hdr->sh_offset) 171 || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); 172 } 173 else 174 { 175 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this 176 case because relocations against this section may use the 177 dynamic symbol table, and in that case bfd_section_from_shdr 178 in elf.c does not update the RELOC_COUNT. */ 179 if (asect->size == 0) 180 return TRUE; 181 182 rel_hdr = &d->this_hdr; 183 asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr); 184 rel_hdr2 = NULL; 185 } 186 187 amt = asect->reloc_count; 188 amt *= 2 * sizeof (arelent); 189 asect->relocation = (arelent *) bfd_alloc (abfd, amt); 190 if (asect->relocation == NULL) 191 return FALSE; 192 193 /* The elf64_sparc_slurp_one_reloc_table routine increments 194 canon_reloc_count. */ 195 canon_reloc_count (asect) = 0; 196 197 if (rel_hdr 198 && !elf64_sparc_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, 199 dynamic)) 200 return FALSE; 201 202 if (rel_hdr2 203 && !elf64_sparc_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols, 204 dynamic)) 205 return FALSE; 206 207 return TRUE; 208} 209 210/* Canonicalize the relocs. */ 211 212static long 213elf64_sparc_canonicalize_reloc (bfd *abfd, sec_ptr section, 214 arelent **relptr, asymbol **symbols) 215{ 216 arelent *tblptr; 217 unsigned int i; 218 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 219 220 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) 221 return -1; 222 223 tblptr = section->relocation; 224 for (i = 0; i < canon_reloc_count (section); i++) 225 *relptr++ = tblptr++; 226 227 *relptr = NULL; 228 229 return canon_reloc_count (section); 230} 231 232 233/* Canonicalize the dynamic relocation entries. Note that we return 234 the dynamic relocations as a single block, although they are 235 actually associated with particular sections; the interface, which 236 was designed for SunOS style shared libraries, expects that there 237 is only one set of dynamic relocs. Any section that was actually 238 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses 239 the dynamic symbol table, is considered to be a dynamic reloc 240 section. */ 241 242static long 243elf64_sparc_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage, 244 asymbol **syms) 245{ 246 asection *s; 247 long ret; 248 249 if (elf_dynsymtab (abfd) == 0) 250 { 251 bfd_set_error (bfd_error_invalid_operation); 252 return -1; 253 } 254 255 ret = 0; 256 for (s = abfd->sections; s != NULL; s = s->next) 257 { 258 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) 259 && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) 260 { 261 arelent *p; 262 long count, i; 263 264 if (! elf64_sparc_slurp_reloc_table (abfd, s, syms, TRUE)) 265 return -1; 266 count = canon_reloc_count (s); 267 p = s->relocation; 268 for (i = 0; i < count; i++) 269 *storage++ = p++; 270 ret += count; 271 } 272 } 273 274 *storage = NULL; 275 276 return ret; 277} 278 279/* Write out the relocs. */ 280 281static void 282elf64_sparc_write_relocs (bfd *abfd, asection *sec, void * data) 283{ 284 bfd_boolean *failedp = (bfd_boolean *) data; 285 Elf_Internal_Shdr *rela_hdr; 286 bfd_vma addr_offset; 287 Elf64_External_Rela *outbound_relocas, *src_rela; 288 unsigned int idx, count; 289 asymbol *last_sym = 0; 290 int last_sym_idx = 0; 291 292 /* If we have already failed, don't do anything. */ 293 if (*failedp) 294 return; 295 296 if ((sec->flags & SEC_RELOC) == 0) 297 return; 298 299 /* The linker backend writes the relocs out itself, and sets the 300 reloc_count field to zero to inhibit writing them here. Also, 301 sometimes the SEC_RELOC flag gets set even when there aren't any 302 relocs. */ 303 if (sec->reloc_count == 0) 304 return; 305 306 /* We can combine two relocs that refer to the same address 307 into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the 308 latter is R_SPARC_13 with no associated symbol. */ 309 count = 0; 310 for (idx = 0; idx < sec->reloc_count; idx++) 311 { 312 bfd_vma addr; 313 314 ++count; 315 316 addr = sec->orelocation[idx]->address; 317 if (sec->orelocation[idx]->howto->type == R_SPARC_LO10 318 && idx < sec->reloc_count - 1) 319 { 320 arelent *r = sec->orelocation[idx + 1]; 321 322 if (r->howto->type == R_SPARC_13 323 && r->address == addr 324 && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) 325 && (*r->sym_ptr_ptr)->value == 0) 326 ++idx; 327 } 328 } 329 330 rela_hdr = elf_section_data (sec)->rela.hdr; 331 332 rela_hdr->sh_size = rela_hdr->sh_entsize * count; 333 rela_hdr->contents = bfd_alloc (abfd, rela_hdr->sh_size); 334 if (rela_hdr->contents == NULL) 335 { 336 *failedp = TRUE; 337 return; 338 } 339 340 /* Figure out whether the relocations are RELA or REL relocations. */ 341 if (rela_hdr->sh_type != SHT_RELA) 342 abort (); 343 344 /* The address of an ELF reloc is section relative for an object 345 file, and absolute for an executable file or shared library. 346 The address of a BFD reloc is always section relative. */ 347 addr_offset = 0; 348 if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) 349 addr_offset = sec->vma; 350 351 /* orelocation has the data, reloc_count has the count... */ 352 outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents; 353 src_rela = outbound_relocas; 354 355 for (idx = 0; idx < sec->reloc_count; idx++) 356 { 357 Elf_Internal_Rela dst_rela; 358 arelent *ptr; 359 asymbol *sym; 360 int n; 361 362 ptr = sec->orelocation[idx]; 363 sym = *ptr->sym_ptr_ptr; 364 if (sym == last_sym) 365 n = last_sym_idx; 366 else if (bfd_is_abs_section (sym->section) && sym->value == 0) 367 n = STN_UNDEF; 368 else 369 { 370 last_sym = sym; 371 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); 372 if (n < 0) 373 { 374 *failedp = TRUE; 375 return; 376 } 377 last_sym_idx = n; 378 } 379 380 if ((*ptr->sym_ptr_ptr)->the_bfd != NULL 381 && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec 382 && ! _bfd_elf_validate_reloc (abfd, ptr)) 383 { 384 *failedp = TRUE; 385 return; 386 } 387 388 if (ptr->howto->type == R_SPARC_LO10 389 && idx < sec->reloc_count - 1) 390 { 391 arelent *r = sec->orelocation[idx + 1]; 392 393 if (r->howto->type == R_SPARC_13 394 && r->address == ptr->address 395 && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) 396 && (*r->sym_ptr_ptr)->value == 0) 397 { 398 idx++; 399 dst_rela.r_info 400 = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend, 401 R_SPARC_OLO10)); 402 } 403 else 404 dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10); 405 } 406 else 407 dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type); 408 409 dst_rela.r_offset = ptr->address + addr_offset; 410 dst_rela.r_addend = ptr->addend; 411 412 bfd_elf64_swap_reloca_out (abfd, &dst_rela, (bfd_byte *) src_rela); 413 ++src_rela; 414 } 415} 416 417/* Hook called by the linker routine which adds symbols from an object 418 file. We use it for STT_REGISTER symbols. */ 419 420static bfd_boolean 421elf64_sparc_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, 422 Elf_Internal_Sym *sym, const char **namep, 423 flagword *flagsp ATTRIBUTE_UNUSED, 424 asection **secp ATTRIBUTE_UNUSED, 425 bfd_vma *valp ATTRIBUTE_UNUSED) 426{ 427 static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" }; 428 429 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC 430 && (abfd->flags & DYNAMIC) == 0 431 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) 432 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; 433 434 if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER) 435 { 436 int reg; 437 struct _bfd_sparc_elf_app_reg *p; 438 439 reg = (int)sym->st_value; 440 switch (reg & ~1) 441 { 442 case 2: reg -= 2; break; 443 case 6: reg -= 4; break; 444 default: 445 _bfd_error_handler 446 (_("%B: Only registers %%g[2367] can be declared using STT_REGISTER"), 447 abfd); 448 return FALSE; 449 } 450 451 if (info->output_bfd->xvec != abfd->xvec 452 || (abfd->flags & DYNAMIC) != 0) 453 { 454 /* STT_REGISTER only works when linking an elf64_sparc object. 455 If STT_REGISTER comes from a dynamic object, don't put it into 456 the output bfd. The dynamic linker will recheck it. */ 457 *namep = NULL; 458 return TRUE; 459 } 460 461 p = _bfd_sparc_elf_hash_table(info)->app_regs + reg; 462 463 if (p->name != NULL && strcmp (p->name, *namep)) 464 { 465 _bfd_error_handler 466 /* xgettext:c-format */ 467 (_("Register %%g%d used incompatibly: %s in %B, previously %s in %B"), 468 abfd, p->abfd, (int) sym->st_value, 469 **namep ? *namep : "#scratch", 470 *p->name ? p->name : "#scratch"); 471 return FALSE; 472 } 473 474 if (p->name == NULL) 475 { 476 if (**namep) 477 { 478 struct elf_link_hash_entry *h; 479 480 h = (struct elf_link_hash_entry *) 481 bfd_link_hash_lookup (info->hash, *namep, FALSE, FALSE, FALSE); 482 483 if (h != NULL) 484 { 485 unsigned char type = h->type; 486 487 if (type > STT_FUNC) 488 type = 0; 489 _bfd_error_handler 490 /* xgettext:c-format */ 491 (_("Symbol `%s' has differing types: REGISTER in %B, previously %s in %B"), 492 abfd, p->abfd, *namep, stt_types[type]); 493 return FALSE; 494 } 495 496 p->name = bfd_hash_allocate (&info->hash->table, 497 strlen (*namep) + 1); 498 if (!p->name) 499 return FALSE; 500 501 strcpy (p->name, *namep); 502 } 503 else 504 p->name = ""; 505 p->bind = ELF_ST_BIND (sym->st_info); 506 p->abfd = abfd; 507 p->shndx = sym->st_shndx; 508 } 509 else 510 { 511 if (p->bind == STB_WEAK 512 && ELF_ST_BIND (sym->st_info) == STB_GLOBAL) 513 { 514 p->bind = STB_GLOBAL; 515 p->abfd = abfd; 516 } 517 } 518 *namep = NULL; 519 return TRUE; 520 } 521 else if (*namep && **namep 522 && info->output_bfd->xvec == abfd->xvec) 523 { 524 int i; 525 struct _bfd_sparc_elf_app_reg *p; 526 527 p = _bfd_sparc_elf_hash_table(info)->app_regs; 528 for (i = 0; i < 4; i++, p++) 529 if (p->name != NULL && ! strcmp (p->name, *namep)) 530 { 531 unsigned char type = ELF_ST_TYPE (sym->st_info); 532 533 if (type > STT_FUNC) 534 type = 0; 535 _bfd_error_handler 536 /* xgettext:c-format */ 537 (_("Symbol `%s' has differing types: %s in %B, previously REGISTER in %B"), 538 abfd, p->abfd, *namep, stt_types[type]); 539 return FALSE; 540 } 541 } 542 return TRUE; 543} 544 545/* This function takes care of emitting STT_REGISTER symbols 546 which we cannot easily keep in the symbol hash table. */ 547 548static bfd_boolean 549elf64_sparc_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED, 550 struct bfd_link_info *info, 551 void * flaginfo, 552 int (*func) (void *, const char *, 553 Elf_Internal_Sym *, 554 asection *, 555 struct elf_link_hash_entry *)) 556{ 557 int reg; 558 struct _bfd_sparc_elf_app_reg *app_regs = 559 _bfd_sparc_elf_hash_table(info)->app_regs; 560 Elf_Internal_Sym sym; 561 562 /* We arranged in size_dynamic_sections to put the STT_REGISTER entries 563 at the end of the dynlocal list, so they came at the end of the local 564 symbols in the symtab. Except that they aren't STB_LOCAL, so we need 565 to back up symtab->sh_info. */ 566 if (elf_hash_table (info)->dynlocal) 567 { 568 bfd * dynobj = elf_hash_table (info)->dynobj; 569 asection *dynsymsec = bfd_get_linker_section (dynobj, ".dynsym"); 570 struct elf_link_local_dynamic_entry *e; 571 572 for (e = elf_hash_table (info)->dynlocal; e ; e = e->next) 573 if (e->input_indx == -1) 574 break; 575 if (e) 576 { 577 elf_section_data (dynsymsec->output_section)->this_hdr.sh_info 578 = e->dynindx; 579 } 580 } 581 582 if (info->strip == strip_all) 583 return TRUE; 584 585 for (reg = 0; reg < 4; reg++) 586 if (app_regs [reg].name != NULL) 587 { 588 if (info->strip == strip_some 589 && bfd_hash_lookup (info->keep_hash, 590 app_regs [reg].name, 591 FALSE, FALSE) == NULL) 592 continue; 593 594 sym.st_value = reg < 2 ? reg + 2 : reg + 4; 595 sym.st_size = 0; 596 sym.st_other = 0; 597 sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER); 598 sym.st_shndx = app_regs [reg].shndx; 599 sym.st_target_internal = 0; 600 if ((*func) (flaginfo, app_regs [reg].name, &sym, 601 sym.st_shndx == SHN_ABS 602 ? bfd_abs_section_ptr : bfd_und_section_ptr, 603 NULL) != 1) 604 return FALSE; 605 } 606 607 return TRUE; 608} 609 610static int 611elf64_sparc_get_symbol_type (Elf_Internal_Sym *elf_sym, int type) 612{ 613 if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER) 614 return STT_REGISTER; 615 else 616 return type; 617} 618 619/* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL 620 even in SHN_UNDEF section. */ 621 622static void 623elf64_sparc_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) 624{ 625 elf_symbol_type *elfsym; 626 627 elfsym = (elf_symbol_type *) asym; 628 if (elfsym->internal_elf_sym.st_info 629 == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER)) 630 { 631 asym->flags |= BSF_GLOBAL; 632 } 633} 634 635 636/* Functions for dealing with the e_flags field. */ 637 638/* Merge backend specific data from an object file to the output 639 object file when linking. */ 640 641static bfd_boolean 642elf64_sparc_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 643{ 644 bfd *obfd = info->output_bfd; 645 bfd_boolean error; 646 flagword new_flags, old_flags; 647 int new_mm, old_mm; 648 649 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 650 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 651 return TRUE; 652 653 new_flags = elf_elfheader (ibfd)->e_flags; 654 old_flags = elf_elfheader (obfd)->e_flags; 655 656 if (!elf_flags_init (obfd)) /* First call, no flags set */ 657 { 658 elf_flags_init (obfd) = TRUE; 659 elf_elfheader (obfd)->e_flags = new_flags; 660 } 661 662 else if (new_flags == old_flags) /* Compatible flags are ok */ 663 ; 664 665 else /* Incompatible flags */ 666 { 667 error = FALSE; 668 669#define EF_SPARC_ISA_EXTENSIONS \ 670 (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1) 671 672 if ((ibfd->flags & DYNAMIC) != 0) 673 { 674 /* We don't want dynamic objects memory ordering and 675 architecture to have any role. That's what dynamic linker 676 should do. */ 677 new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS); 678 new_flags |= (old_flags 679 & (EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS)); 680 } 681 else 682 { 683 /* Choose the highest architecture requirements. */ 684 old_flags |= (new_flags & EF_SPARC_ISA_EXTENSIONS); 685 new_flags |= (old_flags & EF_SPARC_ISA_EXTENSIONS); 686 if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3)) 687 && (old_flags & EF_SPARC_HAL_R1)) 688 { 689 error = TRUE; 690 _bfd_error_handler 691 (_("%B: linking UltraSPARC specific with HAL specific code"), 692 ibfd); 693 } 694 /* Choose the most restrictive memory ordering. */ 695 old_mm = (old_flags & EF_SPARCV9_MM); 696 new_mm = (new_flags & EF_SPARCV9_MM); 697 old_flags &= ~EF_SPARCV9_MM; 698 new_flags &= ~EF_SPARCV9_MM; 699 if (new_mm < old_mm) 700 old_mm = new_mm; 701 old_flags |= old_mm; 702 new_flags |= old_mm; 703 } 704 705 /* Warn about any other mismatches */ 706 if (new_flags != old_flags) 707 { 708 error = TRUE; 709 _bfd_error_handler 710 /* xgettext:c-format */ 711 (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), 712 ibfd, (long) new_flags, (long) old_flags); 713 } 714 715 elf_elfheader (obfd)->e_flags = old_flags; 716 717 if (error) 718 { 719 bfd_set_error (bfd_error_bad_value); 720 return FALSE; 721 } 722 } 723 return _bfd_sparc_elf_merge_private_bfd_data (ibfd, info); 724} 725 726/* MARCO: Set the correct entry size for the .stab section. */ 727 728static bfd_boolean 729elf64_sparc_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, 730 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED, 731 asection *sec) 732{ 733 const char *name; 734 735 name = bfd_get_section_name (abfd, sec); 736 737 if (strcmp (name, ".stab") == 0) 738 { 739 /* Even in the 64bit case the stab entries are only 12 bytes long. */ 740 elf_section_data (sec)->this_hdr.sh_entsize = 12; 741 } 742 743 return TRUE; 744} 745 746/* Print a STT_REGISTER symbol to file FILE. */ 747 748static const char * 749elf64_sparc_print_symbol_all (bfd *abfd ATTRIBUTE_UNUSED, void * filep, 750 asymbol *symbol) 751{ 752 FILE *file = (FILE *) filep; 753 int reg, type; 754 755 if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info) 756 != STT_REGISTER) 757 return NULL; 758 759 reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; 760 type = symbol->flags; 761 fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "", 762 ((type & BSF_LOCAL) 763 ? (type & BSF_GLOBAL) ? '!' : 'l' 764 : (type & BSF_GLOBAL) ? 'g' : ' '), 765 (type & BSF_WEAK) ? 'w' : ' '); 766 if (symbol->name == NULL || symbol->name [0] == '\0') 767 return "#scratch"; 768 else 769 return symbol->name; 770} 771 772static enum elf_reloc_type_class 773elf64_sparc_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 774 const asection *rel_sec ATTRIBUTE_UNUSED, 775 const Elf_Internal_Rela *rela) 776{ 777 switch ((int) ELF64_R_TYPE (rela->r_info)) 778 { 779 case R_SPARC_RELATIVE: 780 return reloc_class_relative; 781 case R_SPARC_JMP_SLOT: 782 return reloc_class_plt; 783 case R_SPARC_COPY: 784 return reloc_class_copy; 785 default: 786 return reloc_class_normal; 787 } 788} 789 790/* Relocations in the 64 bit SPARC ELF ABI are more complex than in 791 standard ELF, because R_SPARC_OLO10 has secondary addend in 792 ELF64_R_TYPE_DATA field. This structure is used to redirect the 793 relocation handling routines. */ 794 795const struct elf_size_info elf64_sparc_size_info = 796{ 797 sizeof (Elf64_External_Ehdr), 798 sizeof (Elf64_External_Phdr), 799 sizeof (Elf64_External_Shdr), 800 sizeof (Elf64_External_Rel), 801 sizeof (Elf64_External_Rela), 802 sizeof (Elf64_External_Sym), 803 sizeof (Elf64_External_Dyn), 804 sizeof (Elf_External_Note), 805 4, /* hash-table entry size. */ 806 /* Internal relocations per external relocations. 807 For link purposes we use just 1 internal per 808 1 external, for assembly and slurp symbol table 809 we use 2. */ 810 1, 811 64, /* arch_size. */ 812 3, /* log_file_align. */ 813 ELFCLASS64, 814 EV_CURRENT, 815 bfd_elf64_write_out_phdrs, 816 bfd_elf64_write_shdrs_and_ehdr, 817 bfd_elf64_checksum_contents, 818 elf64_sparc_write_relocs, 819 bfd_elf64_swap_symbol_in, 820 bfd_elf64_swap_symbol_out, 821 elf64_sparc_slurp_reloc_table, 822 bfd_elf64_slurp_symbol_table, 823 bfd_elf64_swap_dyn_in, 824 bfd_elf64_swap_dyn_out, 825 bfd_elf64_swap_reloc_in, 826 bfd_elf64_swap_reloc_out, 827 bfd_elf64_swap_reloca_in, 828 bfd_elf64_swap_reloca_out 829}; 830 831#define TARGET_BIG_SYM sparc_elf64_vec 832#define TARGET_BIG_NAME "elf64-sparc" 833#define ELF_ARCH bfd_arch_sparc 834#define ELF_MAXPAGESIZE 0x100000 835#define ELF_COMMONPAGESIZE 0x2000 836 837/* This is the official ABI value. */ 838#define ELF_MACHINE_CODE EM_SPARCV9 839 840/* This is the value that we used before the ABI was released. */ 841#define ELF_MACHINE_ALT1 EM_OLD_SPARCV9 842 843#define elf_backend_reloc_type_class \ 844 elf64_sparc_reloc_type_class 845#define bfd_elf64_get_reloc_upper_bound \ 846 elf64_sparc_get_reloc_upper_bound 847#define bfd_elf64_get_dynamic_reloc_upper_bound \ 848 elf64_sparc_get_dynamic_reloc_upper_bound 849#define bfd_elf64_canonicalize_reloc \ 850 elf64_sparc_canonicalize_reloc 851#define bfd_elf64_canonicalize_dynamic_reloc \ 852 elf64_sparc_canonicalize_dynamic_reloc 853#define elf_backend_add_symbol_hook \ 854 elf64_sparc_add_symbol_hook 855#define elf_backend_get_symbol_type \ 856 elf64_sparc_get_symbol_type 857#define elf_backend_symbol_processing \ 858 elf64_sparc_symbol_processing 859#define elf_backend_print_symbol_all \ 860 elf64_sparc_print_symbol_all 861#define elf_backend_output_arch_syms \ 862 elf64_sparc_output_arch_syms 863#define bfd_elf64_bfd_merge_private_bfd_data \ 864 elf64_sparc_merge_private_bfd_data 865#define elf_backend_fake_sections \ 866 elf64_sparc_fake_sections 867#define elf_backend_size_info \ 868 elf64_sparc_size_info 869 870#define elf_backend_plt_sym_val \ 871 _bfd_sparc_elf_plt_sym_val 872#define bfd_elf64_bfd_link_hash_table_create \ 873 _bfd_sparc_elf_link_hash_table_create 874#define elf_info_to_howto \ 875 _bfd_sparc_elf_info_to_howto 876#define elf_backend_copy_indirect_symbol \ 877 _bfd_sparc_elf_copy_indirect_symbol 878#define bfd_elf64_bfd_reloc_type_lookup \ 879 _bfd_sparc_elf_reloc_type_lookup 880#define bfd_elf64_bfd_reloc_name_lookup \ 881 _bfd_sparc_elf_reloc_name_lookup 882#define bfd_elf64_bfd_relax_section \ 883 _bfd_sparc_elf_relax_section 884#define bfd_elf64_new_section_hook \ 885 _bfd_sparc_elf_new_section_hook 886 887#define elf_backend_create_dynamic_sections \ 888 _bfd_sparc_elf_create_dynamic_sections 889#define elf_backend_relocs_compatible \ 890 _bfd_elf_relocs_compatible 891#define elf_backend_check_relocs \ 892 _bfd_sparc_elf_check_relocs 893#define elf_backend_adjust_dynamic_symbol \ 894 _bfd_sparc_elf_adjust_dynamic_symbol 895#define elf_backend_omit_section_dynsym \ 896 _bfd_sparc_elf_omit_section_dynsym 897#define elf_backend_size_dynamic_sections \ 898 _bfd_sparc_elf_size_dynamic_sections 899#define elf_backend_relocate_section \ 900 _bfd_sparc_elf_relocate_section 901#define elf_backend_finish_dynamic_symbol \ 902 _bfd_sparc_elf_finish_dynamic_symbol 903#define elf_backend_finish_dynamic_sections \ 904 _bfd_sparc_elf_finish_dynamic_sections 905 906#define bfd_elf64_mkobject \ 907 _bfd_sparc_elf_mkobject 908#define elf_backend_object_p \ 909 _bfd_sparc_elf_object_p 910#define elf_backend_gc_mark_hook \ 911 _bfd_sparc_elf_gc_mark_hook 912#define elf_backend_gc_sweep_hook \ 913 _bfd_sparc_elf_gc_sweep_hook 914#define elf_backend_init_index_section \ 915 _bfd_elf_init_1_index_section 916 917#define elf_backend_can_gc_sections 1 918#define elf_backend_can_refcount 1 919#define elf_backend_want_got_plt 0 920#define elf_backend_plt_readonly 0 921#define elf_backend_want_plt_sym 1 922#define elf_backend_got_header_size 8 923#define elf_backend_want_dynrelro 1 924#define elf_backend_rela_normal 1 925 926/* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */ 927#define elf_backend_plt_alignment 8 928 929#include "elf64-target.h" 930 931/* FreeBSD support */ 932#undef TARGET_BIG_SYM 933#define TARGET_BIG_SYM sparc_elf64_fbsd_vec 934#undef TARGET_BIG_NAME 935#define TARGET_BIG_NAME "elf64-sparc-freebsd" 936#undef ELF_OSABI 937#define ELF_OSABI ELFOSABI_FREEBSD 938 939#undef elf64_bed 940#define elf64_bed elf64_sparc_fbsd_bed 941 942#include "elf64-target.h" 943 944/* Solaris 2. */ 945 946#undef TARGET_BIG_SYM 947#define TARGET_BIG_SYM sparc_elf64_sol2_vec 948#undef TARGET_BIG_NAME 949#define TARGET_BIG_NAME "elf64-sparc-sol2" 950 951/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE 952 objects won't be recognized. */ 953#undef ELF_OSABI 954 955#undef elf64_bed 956#define elf64_bed elf64_sparc_sol2_bed 957 958/* The 64-bit static TLS arena size is rounded to the nearest 16-byte 959 boundary. */ 960#undef elf_backend_static_tls_alignment 961#define elf_backend_static_tls_alignment 16 962 963#include "elf64-target.h" 964