1 /* IA-64 support for OpenVMS 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 "opcode/ia64.h" 26 #include "elf/ia64.h" 27 #include "objalloc.h" 28 #include "hashtab.h" 29 #include "elfxx-ia64.h" 30 #include "vms.h" 31 #include "bfdver.h" 32 33 /* THE RULES for all the stuff the linker creates -- 34 35 GOT Entries created in response to LTOFF or LTOFF_FPTR 36 relocations. Dynamic relocs created for dynamic 37 symbols in an application; REL relocs for locals 38 in a shared library. 39 40 FPTR The canonical function descriptor. Created for local 41 symbols in applications. Descriptors for dynamic symbols 42 and local symbols in shared libraries are created by 43 ld.so. Thus there are no dynamic relocs against these 44 objects. The FPTR relocs for such _are_ passed through 45 to the dynamic relocation tables. 46 47 FULL_PLT Created for a PCREL21B relocation against a dynamic symbol. 48 Requires the creation of a PLTOFF entry. This does not 49 require any dynamic relocations. 50 51 PLTOFF Created by PLTOFF relocations. For local symbols, this 52 is an alternate function descriptor, and in shared libraries 53 requires two REL relocations. Note that this cannot be 54 transformed into an FPTR relocation, since it must be in 55 range of the GP. For dynamic symbols, this is a function 56 descriptor. */ 57 58 typedef struct bfd_hash_entry *(*new_hash_entry_func) 59 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); 60 61 /* In dynamically (linker-) created sections, we generally need to keep track 62 of the place a symbol or expression got allocated to. This is done via hash 63 tables that store entries of the following type. */ 64 65 struct elf64_ia64_dyn_sym_info 66 { 67 /* The addend for which this entry is relevant. */ 68 bfd_vma addend; 69 70 bfd_vma got_offset; 71 bfd_vma fptr_offset; 72 bfd_vma pltoff_offset; 73 bfd_vma plt_offset; 74 bfd_vma plt2_offset; 75 76 /* The symbol table entry, if any, that this was derived from. */ 77 struct elf_link_hash_entry *h; 78 79 /* Used to count non-got, non-plt relocations for delayed sizing 80 of relocation sections. */ 81 struct elf64_ia64_dyn_reloc_entry 82 { 83 struct elf64_ia64_dyn_reloc_entry *next; 84 asection *srel; 85 int type; 86 int count; 87 } *reloc_entries; 88 89 /* TRUE when the section contents have been updated. */ 90 unsigned got_done : 1; 91 unsigned fptr_done : 1; 92 unsigned pltoff_done : 1; 93 94 /* TRUE for the different kinds of linker data we want created. */ 95 unsigned want_got : 1; 96 unsigned want_gotx : 1; 97 unsigned want_fptr : 1; 98 unsigned want_ltoff_fptr : 1; 99 unsigned want_plt : 1; /* A MIN_PLT entry. */ 100 unsigned want_plt2 : 1; /* A FULL_PLT. */ 101 unsigned want_pltoff : 1; 102 }; 103 104 struct elf64_ia64_local_hash_entry 105 { 106 int id; 107 unsigned int r_sym; 108 /* The number of elements in elf64_ia64_dyn_sym_info array. */ 109 unsigned int count; 110 /* The number of sorted elements in elf64_ia64_dyn_sym_info array. */ 111 unsigned int sorted_count; 112 /* The size of elf64_ia64_dyn_sym_info array. */ 113 unsigned int size; 114 /* The array of elf64_ia64_dyn_sym_info. */ 115 struct elf64_ia64_dyn_sym_info *info; 116 117 /* TRUE if this hash entry's addends was translated for 118 SHF_MERGE optimization. */ 119 unsigned sec_merge_done : 1; 120 }; 121 122 struct elf64_ia64_link_hash_entry 123 { 124 struct elf_link_hash_entry root; 125 126 /* Set if this symbol is defined in a shared library. 127 We can't use root.u.def.section->owner as the symbol is an absolute 128 symbol. */ 129 bfd *shl; 130 131 /* The number of elements in elf64_ia64_dyn_sym_info array. */ 132 unsigned int count; 133 /* The number of sorted elements in elf64_ia64_dyn_sym_info array. */ 134 unsigned int sorted_count; 135 /* The size of elf64_ia64_dyn_sym_info array. */ 136 unsigned int size; 137 /* The array of elf64_ia64_dyn_sym_info. */ 138 struct elf64_ia64_dyn_sym_info *info; 139 }; 140 141 struct elf64_ia64_link_hash_table 142 { 143 /* The main hash table. */ 144 struct elf_link_hash_table root; 145 146 asection *fptr_sec; /* Function descriptor table (or NULL). */ 147 asection *rel_fptr_sec; /* Dynamic relocation section for same. */ 148 asection *pltoff_sec; /* Private descriptors for plt (or NULL). */ 149 asection *fixups_sec; /* Fixups section. */ 150 asection *transfer_sec; /* Transfer vector section. */ 151 asection *note_sec; /* .note section. */ 152 153 /* There are maybe R_IA64_GPREL22 relocations, including those 154 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT 155 sections. We need to record those sections so that we can choose 156 a proper GP to cover all R_IA64_GPREL22 relocations. */ 157 asection *max_short_sec; /* Maximum short output section. */ 158 bfd_vma max_short_offset; /* Maximum short offset. */ 159 asection *min_short_sec; /* Minimum short output section. */ 160 bfd_vma min_short_offset; /* Minimum short offset. */ 161 162 htab_t loc_hash_table; 163 void *loc_hash_memory; 164 }; 165 166 struct elf64_ia64_allocate_data 167 { 168 struct bfd_link_info *info; 169 bfd_size_type ofs; 170 }; 171 172 #define elf64_ia64_hash_table(p) \ 173 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 174 == IA64_ELF_DATA ? ((struct elf64_ia64_link_hash_table *) ((p)->hash)) : NULL) 175 176 struct elf64_ia64_vms_obj_tdata 177 { 178 struct elf_obj_tdata root; 179 180 /* Ident for shared library. */ 181 bfd_uint64_t ident; 182 183 /* Used only during link: offset in the .fixups section for this bfd. */ 184 bfd_vma fixups_off; 185 186 /* Max number of shared libraries. */ 187 unsigned int needed_count; 188 }; 189 190 #define elf_ia64_vms_tdata(abfd) \ 191 ((struct elf64_ia64_vms_obj_tdata *)((abfd)->tdata.any)) 192 #define elf_ia64_vms_ident(abfd) (elf_ia64_vms_tdata(abfd)->ident) 193 194 struct elf64_vms_transfer 195 { 196 unsigned char size[4]; 197 unsigned char spare[4]; 198 unsigned char tfradr1[8]; 199 unsigned char tfradr2[8]; 200 unsigned char tfradr3[8]; 201 unsigned char tfradr4[8]; 202 unsigned char tfradr5[8]; 203 204 /* Local function descriptor for tfr3. */ 205 unsigned char tfr3_func[8]; 206 unsigned char tfr3_gp[8]; 207 }; 208 209 typedef struct 210 { 211 Elf64_External_Ehdr ehdr; 212 unsigned char vms_needed_count[8]; 213 } Elf64_External_VMS_Ehdr; 214 215 static struct elf64_ia64_dyn_sym_info * get_dyn_sym_info 216 (struct elf64_ia64_link_hash_table *, 217 struct elf_link_hash_entry *, 218 bfd *, const Elf_Internal_Rela *, bfd_boolean); 219 static bfd_boolean elf64_ia64_dynamic_symbol_p 220 (struct elf_link_hash_entry *); 221 static bfd_boolean elf64_ia64_choose_gp 222 (bfd *, struct bfd_link_info *, bfd_boolean); 223 static void elf64_ia64_dyn_sym_traverse 224 (struct elf64_ia64_link_hash_table *, 225 bfd_boolean (*) (struct elf64_ia64_dyn_sym_info *, void *), 226 void *); 227 static bfd_boolean allocate_global_data_got 228 (struct elf64_ia64_dyn_sym_info *, void *); 229 static bfd_boolean allocate_global_fptr_got 230 (struct elf64_ia64_dyn_sym_info *, void *); 231 static bfd_boolean allocate_local_got 232 (struct elf64_ia64_dyn_sym_info *, void *); 233 static bfd_boolean allocate_dynrel_entries 234 (struct elf64_ia64_dyn_sym_info *, void *); 235 static asection *get_pltoff 236 (bfd *, struct elf64_ia64_link_hash_table *); 237 static asection *get_got 238 (bfd *, struct elf64_ia64_link_hash_table *); 239 240 241 /* Given a ELF reloc, return the matching HOWTO structure. */ 242 243 static void 244 elf64_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 245 arelent *bfd_reloc, 246 Elf_Internal_Rela *elf_reloc) 247 { 248 bfd_reloc->howto 249 = ia64_elf_lookup_howto ((unsigned int) ELF64_R_TYPE (elf_reloc->r_info)); 250 } 251 252 253 #define PLT_FULL_ENTRY_SIZE (2 * 16) 254 255 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = 256 { 257 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ 258 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ 259 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ 260 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ 261 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ 262 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ 263 }; 264 265 static const bfd_byte oor_brl[16] = 266 { 267 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ 268 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;;*/ 269 0x00, 0x00, 0x00, 0xc0 270 }; 271 272 273 /* These functions do relaxation for IA-64 ELF. */ 274 275 /* Rename some of the generic section flags to better document how they 276 are used here. */ 277 #define skip_relax_pass_0 sec_flg0 278 #define skip_relax_pass_1 sec_flg1 279 280 static void 281 elf64_ia64_update_short_info (asection *sec, bfd_vma offset, 282 struct elf64_ia64_link_hash_table *ia64_info) 283 { 284 /* Skip ABS and SHF_IA_64_SHORT sections. */ 285 if (sec == bfd_abs_section_ptr 286 || (sec->flags & SEC_SMALL_DATA) != 0) 287 return; 288 289 if (!ia64_info->min_short_sec) 290 { 291 ia64_info->max_short_sec = sec; 292 ia64_info->max_short_offset = offset; 293 ia64_info->min_short_sec = sec; 294 ia64_info->min_short_offset = offset; 295 } 296 else if (sec == ia64_info->max_short_sec 297 && offset > ia64_info->max_short_offset) 298 ia64_info->max_short_offset = offset; 299 else if (sec == ia64_info->min_short_sec 300 && offset < ia64_info->min_short_offset) 301 ia64_info->min_short_offset = offset; 302 else if (sec->output_section->vma 303 > ia64_info->max_short_sec->vma) 304 { 305 ia64_info->max_short_sec = sec; 306 ia64_info->max_short_offset = offset; 307 } 308 else if (sec->output_section->vma 309 < ia64_info->min_short_sec->vma) 310 { 311 ia64_info->min_short_sec = sec; 312 ia64_info->min_short_offset = offset; 313 } 314 } 315 316 /* Use a two passes algorithm. In the first pass, branches are relaxed 317 (which may increase the size of the section). In the second pass, 318 the other relaxations are done. 319 */ 320 321 static bfd_boolean 322 elf64_ia64_relax_section (bfd *abfd, asection *sec, 323 struct bfd_link_info *link_info, 324 bfd_boolean *again) 325 { 326 struct one_fixup 327 { 328 struct one_fixup *next; 329 asection *tsec; 330 bfd_vma toff; 331 bfd_vma trampoff; 332 }; 333 334 Elf_Internal_Shdr *symtab_hdr; 335 Elf_Internal_Rela *internal_relocs; 336 Elf_Internal_Rela *irel, *irelend; 337 bfd_byte *contents; 338 Elf_Internal_Sym *isymbuf = NULL; 339 struct elf64_ia64_link_hash_table *ia64_info; 340 struct one_fixup *fixups = NULL; 341 bfd_boolean changed_contents = FALSE; 342 bfd_boolean changed_relocs = FALSE; 343 bfd_boolean skip_relax_pass_0 = TRUE; 344 bfd_boolean skip_relax_pass_1 = TRUE; 345 bfd_vma gp = 0; 346 347 /* Assume we're not going to change any sizes, and we'll only need 348 one pass. */ 349 *again = FALSE; 350 351 if (link_info->relocatable) 352 (*link_info->callbacks->einfo) 353 (_("%P%F: --relax and -r may not be used together\n")); 354 355 /* Don't even try to relax for non-ELF outputs. */ 356 if (!is_elf_hash_table (link_info->hash)) 357 return FALSE; 358 359 /* Nothing to do if there are no relocations or there is no need for 360 the current pass. */ 361 if ((sec->flags & SEC_RELOC) == 0 362 || sec->reloc_count == 0 363 || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) 364 || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) 365 return TRUE; 366 367 ia64_info = elf64_ia64_hash_table (link_info); 368 if (ia64_info == NULL) 369 return FALSE; 370 371 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 372 373 /* Load the relocations for this section. */ 374 internal_relocs = (_bfd_elf_link_read_relocs 375 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, 376 link_info->keep_memory)); 377 if (internal_relocs == NULL) 378 return FALSE; 379 380 irelend = internal_relocs + sec->reloc_count; 381 382 /* Get the section contents. */ 383 if (elf_section_data (sec)->this_hdr.contents != NULL) 384 contents = elf_section_data (sec)->this_hdr.contents; 385 else 386 { 387 if (!bfd_malloc_and_get_section (abfd, sec, &contents)) 388 goto error_return; 389 } 390 391 for (irel = internal_relocs; irel < irelend; irel++) 392 { 393 unsigned long r_type = ELF64_R_TYPE (irel->r_info); 394 bfd_vma symaddr, reladdr, trampoff, toff, roff; 395 asection *tsec; 396 struct one_fixup *f; 397 bfd_size_type amt; 398 bfd_boolean is_branch; 399 struct elf64_ia64_dyn_sym_info *dyn_i; 400 401 switch (r_type) 402 { 403 case R_IA64_PCREL21B: 404 case R_IA64_PCREL21BI: 405 case R_IA64_PCREL21M: 406 case R_IA64_PCREL21F: 407 /* In pass 1, all br relaxations are done. We can skip it. */ 408 if (link_info->relax_pass == 1) 409 continue; 410 skip_relax_pass_0 = FALSE; 411 is_branch = TRUE; 412 break; 413 414 case R_IA64_PCREL60B: 415 /* We can't optimize brl to br in pass 0 since br relaxations 416 will increase the code size. Defer it to pass 1. */ 417 if (link_info->relax_pass == 0) 418 { 419 skip_relax_pass_1 = FALSE; 420 continue; 421 } 422 is_branch = TRUE; 423 break; 424 425 case R_IA64_GPREL22: 426 /* Update max_short_sec/min_short_sec. */ 427 428 case R_IA64_LTOFF22X: 429 case R_IA64_LDXMOV: 430 /* We can't relax ldx/mov in pass 0 since br relaxations will 431 increase the code size. Defer it to pass 1. */ 432 if (link_info->relax_pass == 0) 433 { 434 skip_relax_pass_1 = FALSE; 435 continue; 436 } 437 is_branch = FALSE; 438 break; 439 440 default: 441 continue; 442 } 443 444 /* Get the value of the symbol referred to by the reloc. */ 445 if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) 446 { 447 /* A local symbol. */ 448 Elf_Internal_Sym *isym; 449 450 /* Read this BFD's local symbols. */ 451 if (isymbuf == NULL) 452 { 453 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; 454 if (isymbuf == NULL) 455 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, 456 symtab_hdr->sh_info, 0, 457 NULL, NULL, NULL); 458 if (isymbuf == 0) 459 goto error_return; 460 } 461 462 isym = isymbuf + ELF64_R_SYM (irel->r_info); 463 if (isym->st_shndx == SHN_UNDEF) 464 continue; /* We can't do anything with undefined symbols. */ 465 else if (isym->st_shndx == SHN_ABS) 466 tsec = bfd_abs_section_ptr; 467 else if (isym->st_shndx == SHN_COMMON) 468 tsec = bfd_com_section_ptr; 469 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) 470 tsec = bfd_com_section_ptr; 471 else 472 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); 473 474 toff = isym->st_value; 475 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); 476 } 477 else 478 { 479 unsigned long indx; 480 struct elf_link_hash_entry *h; 481 482 indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; 483 h = elf_sym_hashes (abfd)[indx]; 484 BFD_ASSERT (h != NULL); 485 486 while (h->root.type == bfd_link_hash_indirect 487 || h->root.type == bfd_link_hash_warning) 488 h = (struct elf_link_hash_entry *) h->root.u.i.link; 489 490 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); 491 492 /* For branches to dynamic symbols, we're interested instead 493 in a branch to the PLT entry. */ 494 if (is_branch && dyn_i && dyn_i->want_plt2) 495 { 496 /* Internal branches shouldn't be sent to the PLT. 497 Leave this for now and we'll give an error later. */ 498 if (r_type != R_IA64_PCREL21B) 499 continue; 500 501 tsec = ia64_info->root.splt; 502 toff = dyn_i->plt2_offset; 503 BFD_ASSERT (irel->r_addend == 0); 504 } 505 506 /* Can't do anything else with dynamic symbols. */ 507 else if (elf64_ia64_dynamic_symbol_p (h)) 508 continue; 509 510 else 511 { 512 /* We can't do anything with undefined symbols. */ 513 if (h->root.type == bfd_link_hash_undefined 514 || h->root.type == bfd_link_hash_undefweak) 515 continue; 516 517 tsec = h->root.u.def.section; 518 toff = h->root.u.def.value; 519 } 520 } 521 522 toff += irel->r_addend; 523 524 symaddr = tsec->output_section->vma + tsec->output_offset + toff; 525 526 roff = irel->r_offset; 527 528 if (is_branch) 529 { 530 bfd_signed_vma offset; 531 532 reladdr = (sec->output_section->vma 533 + sec->output_offset 534 + roff) & (bfd_vma) -4; 535 536 /* The .plt section is aligned at 32byte and the .text section 537 is aligned at 64byte. The .text section is right after the 538 .plt section. After the first relaxation pass, linker may 539 increase the gap between the .plt and .text sections up 540 to 32byte. We assume linker will always insert 32byte 541 between the .plt and .text sections after the first 542 relaxation pass. */ 543 if (tsec == ia64_info->root.splt) 544 offset = -0x1000000 + 32; 545 else 546 offset = -0x1000000; 547 548 /* If the branch is in range, no need to do anything. */ 549 if ((bfd_signed_vma) (symaddr - reladdr) >= offset 550 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) 551 { 552 /* If the 60-bit branch is in 21-bit range, optimize it. */ 553 if (r_type == R_IA64_PCREL60B) 554 { 555 ia64_elf_relax_brl (contents, roff); 556 557 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), 558 R_IA64_PCREL21B); 559 560 /* If the original relocation offset points to slot 561 1, change it to slot 2. */ 562 if ((irel->r_offset & 3) == 1) 563 irel->r_offset += 1; 564 } 565 566 continue; 567 } 568 else if (r_type == R_IA64_PCREL60B) 569 continue; 570 else if (ia64_elf_relax_br (contents, roff)) 571 { 572 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), 573 R_IA64_PCREL60B); 574 575 /* Make the relocation offset point to slot 1. */ 576 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; 577 continue; 578 } 579 580 /* We can't put a trampoline in a .init/.fini section. Issue 581 an error. */ 582 if (strcmp (sec->output_section->name, ".init") == 0 583 || strcmp (sec->output_section->name, ".fini") == 0) 584 { 585 (*_bfd_error_handler) 586 (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."), 587 sec->owner, sec, (unsigned long) roff); 588 bfd_set_error (bfd_error_bad_value); 589 goto error_return; 590 } 591 592 /* If the branch and target are in the same section, you've 593 got one honking big section and we can't help you unless 594 you are branching backwards. You'll get an error message 595 later. */ 596 if (tsec == sec && toff > roff) 597 continue; 598 599 /* Look for an existing fixup to this address. */ 600 for (f = fixups; f ; f = f->next) 601 if (f->tsec == tsec && f->toff == toff) 602 break; 603 604 if (f == NULL) 605 { 606 /* Two alternatives: If it's a branch to a PLT entry, we can 607 make a copy of the FULL_PLT entry. Otherwise, we'll have 608 to use a `brl' insn to get where we're going. */ 609 610 size_t size; 611 612 if (tsec == ia64_info->root.splt) 613 size = sizeof (plt_full_entry); 614 else 615 size = sizeof (oor_brl); 616 617 /* Resize the current section to make room for the new branch. */ 618 trampoff = (sec->size + 15) & (bfd_vma) -16; 619 620 /* If trampoline is out of range, there is nothing we 621 can do. */ 622 offset = trampoff - (roff & (bfd_vma) -4); 623 if (offset < -0x1000000 || offset > 0x0FFFFF0) 624 continue; 625 626 amt = trampoff + size; 627 contents = (bfd_byte *) bfd_realloc (contents, amt); 628 if (contents == NULL) 629 goto error_return; 630 sec->size = amt; 631 632 if (tsec == ia64_info->root.splt) 633 { 634 memcpy (contents + trampoff, plt_full_entry, size); 635 636 /* Hijack the old relocation for use as the PLTOFF reloc. */ 637 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), 638 R_IA64_PLTOFF22); 639 irel->r_offset = trampoff; 640 } 641 else 642 { 643 memcpy (contents + trampoff, oor_brl, size); 644 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), 645 R_IA64_PCREL60B); 646 irel->r_offset = trampoff + 2; 647 } 648 649 /* Record the fixup so we don't do it again this section. */ 650 f = (struct one_fixup *) 651 bfd_malloc ((bfd_size_type) sizeof (*f)); 652 f->next = fixups; 653 f->tsec = tsec; 654 f->toff = toff; 655 f->trampoff = trampoff; 656 fixups = f; 657 } 658 else 659 { 660 /* If trampoline is out of range, there is nothing we 661 can do. */ 662 offset = f->trampoff - (roff & (bfd_vma) -4); 663 if (offset < -0x1000000 || offset > 0x0FFFFF0) 664 continue; 665 666 /* Nop out the reloc, since we're finalizing things here. */ 667 irel->r_info = ELF64_R_INFO (0, R_IA64_NONE); 668 } 669 670 /* Fix up the existing branch to hit the trampoline. */ 671 if (ia64_elf_install_value (contents + roff, offset, r_type) 672 != bfd_reloc_ok) 673 goto error_return; 674 675 changed_contents = TRUE; 676 changed_relocs = TRUE; 677 } 678 else 679 { 680 /* Fetch the gp. */ 681 if (gp == 0) 682 { 683 bfd *obfd = sec->output_section->owner; 684 gp = _bfd_get_gp_value (obfd); 685 if (gp == 0) 686 { 687 if (!elf64_ia64_choose_gp (obfd, link_info, FALSE)) 688 goto error_return; 689 gp = _bfd_get_gp_value (obfd); 690 } 691 } 692 693 /* If the data is out of range, do nothing. */ 694 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 695 ||(bfd_signed_vma) (symaddr - gp) < -0x200000) 696 continue; 697 698 if (r_type == R_IA64_GPREL22) 699 elf64_ia64_update_short_info (tsec->output_section, 700 tsec->output_offset + toff, 701 ia64_info); 702 else if (r_type == R_IA64_LTOFF22X) 703 { 704 /* Can't deal yet correctly with ABS symbols. */ 705 if (bfd_is_abs_section (tsec)) 706 continue; 707 708 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), 709 R_IA64_GPREL22); 710 changed_relocs = TRUE; 711 712 elf64_ia64_update_short_info (tsec->output_section, 713 tsec->output_offset + toff, 714 ia64_info); 715 } 716 else 717 { 718 ia64_elf_relax_ldxmov (contents, roff); 719 irel->r_info = ELF64_R_INFO (0, R_IA64_NONE); 720 changed_contents = TRUE; 721 changed_relocs = TRUE; 722 } 723 } 724 } 725 726 /* ??? If we created fixups, this may push the code segment large 727 enough that the data segment moves, which will change the GP. 728 Reset the GP so that we re-calculate next round. We need to 729 do this at the _beginning_ of the next round; now will not do. */ 730 731 /* Clean up and go home. */ 732 while (fixups) 733 { 734 struct one_fixup *f = fixups; 735 fixups = fixups->next; 736 free (f); 737 } 738 739 if (isymbuf != NULL 740 && symtab_hdr->contents != (unsigned char *) isymbuf) 741 { 742 if (! link_info->keep_memory) 743 free (isymbuf); 744 else 745 { 746 /* Cache the symbols for elf_link_input_bfd. */ 747 symtab_hdr->contents = (unsigned char *) isymbuf; 748 } 749 } 750 751 if (contents != NULL 752 && elf_section_data (sec)->this_hdr.contents != contents) 753 { 754 if (!changed_contents && !link_info->keep_memory) 755 free (contents); 756 else 757 { 758 /* Cache the section contents for elf_link_input_bfd. */ 759 elf_section_data (sec)->this_hdr.contents = contents; 760 } 761 } 762 763 if (elf_section_data (sec)->relocs != internal_relocs) 764 { 765 if (!changed_relocs) 766 free (internal_relocs); 767 else 768 elf_section_data (sec)->relocs = internal_relocs; 769 } 770 771 if (link_info->relax_pass == 0) 772 { 773 /* Pass 0 is only needed to relax br. */ 774 sec->skip_relax_pass_0 = skip_relax_pass_0; 775 sec->skip_relax_pass_1 = skip_relax_pass_1; 776 } 777 778 *again = changed_contents || changed_relocs; 779 return TRUE; 780 781 error_return: 782 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) 783 free (isymbuf); 784 if (contents != NULL 785 && elf_section_data (sec)->this_hdr.contents != contents) 786 free (contents); 787 if (internal_relocs != NULL 788 && elf_section_data (sec)->relocs != internal_relocs) 789 free (internal_relocs); 790 return FALSE; 791 } 792 #undef skip_relax_pass_0 793 #undef skip_relax_pass_1 794 795 /* Return TRUE if NAME is an unwind table section name. */ 796 797 static inline bfd_boolean 798 is_unwind_section_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) 799 { 800 return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) 801 && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) 802 || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); 803 } 804 805 806 /* Convert IA-64 specific section flags to bfd internal section flags. */ 807 808 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV 809 flag. */ 810 811 static bfd_boolean 812 elf64_ia64_section_flags (flagword *flags, 813 const Elf_Internal_Shdr *hdr) 814 { 815 if (hdr->sh_flags & SHF_IA_64_SHORT) 816 *flags |= SEC_SMALL_DATA; 817 818 return TRUE; 819 } 820 821 /* Set the correct type for an IA-64 ELF section. We do this by the 822 section name, which is a hack, but ought to work. */ 823 824 static bfd_boolean 825 elf64_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, 826 asection *sec) 827 { 828 const char *name; 829 830 name = bfd_get_section_name (abfd, sec); 831 832 if (is_unwind_section_name (abfd, name)) 833 { 834 /* We don't have the sections numbered at this point, so sh_info 835 is set later, in elf64_ia64_final_write_processing. */ 836 hdr->sh_type = SHT_IA_64_UNWIND; 837 hdr->sh_flags |= SHF_LINK_ORDER; 838 } 839 else if (strcmp (name, ELF_STRING_ia64_archext) == 0) 840 hdr->sh_type = SHT_IA_64_EXT; 841 842 if (sec->flags & SEC_SMALL_DATA) 843 hdr->sh_flags |= SHF_IA_64_SHORT; 844 845 return TRUE; 846 } 847 848 /* Hook called by the linker routine which adds symbols from an object 849 file. We use it to put .comm items in .sbss, and not .bss. */ 850 851 static bfd_boolean 852 elf64_ia64_add_symbol_hook (bfd *abfd, 853 struct bfd_link_info *info, 854 Elf_Internal_Sym *sym, 855 const char **namep ATTRIBUTE_UNUSED, 856 flagword *flagsp ATTRIBUTE_UNUSED, 857 asection **secp, 858 bfd_vma *valp) 859 { 860 if (sym->st_shndx == SHN_COMMON 861 && !info->relocatable 862 && sym->st_size <= elf_gp_size (abfd)) 863 { 864 /* Common symbols less than or equal to -G nn bytes are 865 automatically put into .sbss. */ 866 867 asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); 868 869 if (scomm == NULL) 870 { 871 scomm = bfd_make_section_with_flags (abfd, ".scommon", 872 (SEC_ALLOC 873 | SEC_IS_COMMON 874 | SEC_LINKER_CREATED)); 875 if (scomm == NULL) 876 return FALSE; 877 } 878 879 *secp = scomm; 880 *valp = sym->st_size; 881 } 882 883 return TRUE; 884 } 885 886 /* According to the Tahoe assembler spec, all labels starting with a 887 '.' are local. */ 888 889 static bfd_boolean 890 elf64_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, 891 const char *name) 892 { 893 return name[0] == '.'; 894 } 895 896 /* Should we do dynamic things to this symbol? */ 897 898 static bfd_boolean 899 elf64_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h) 900 { 901 return h != NULL && h->def_dynamic; 902 } 903 904 static struct bfd_hash_entry* 905 elf64_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, 906 struct bfd_hash_table *table, 907 const char *string) 908 { 909 struct elf64_ia64_link_hash_entry *ret; 910 ret = (struct elf64_ia64_link_hash_entry *) entry; 911 912 /* Allocate the structure if it has not already been allocated by a 913 subclass. */ 914 if (!ret) 915 ret = bfd_hash_allocate (table, sizeof (*ret)); 916 917 if (!ret) 918 return 0; 919 920 /* Call the allocation method of the superclass. */ 921 ret = ((struct elf64_ia64_link_hash_entry *) 922 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 923 table, string)); 924 925 ret->info = NULL; 926 ret->count = 0; 927 ret->sorted_count = 0; 928 ret->size = 0; 929 return (struct bfd_hash_entry *) ret; 930 } 931 932 static void 933 elf64_ia64_hash_hide_symbol (struct bfd_link_info *info, 934 struct elf_link_hash_entry *xh, 935 bfd_boolean force_local) 936 { 937 struct elf64_ia64_link_hash_entry *h; 938 struct elf64_ia64_dyn_sym_info *dyn_i; 939 unsigned int count; 940 941 h = (struct elf64_ia64_link_hash_entry *)xh; 942 943 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); 944 945 for (count = h->count, dyn_i = h->info; 946 count != 0; 947 count--, dyn_i++) 948 { 949 dyn_i->want_plt2 = 0; 950 dyn_i->want_plt = 0; 951 } 952 } 953 954 /* Compute a hash of a local hash entry. */ 955 956 static hashval_t 957 elf64_ia64_local_htab_hash (const void *ptr) 958 { 959 struct elf64_ia64_local_hash_entry *entry 960 = (struct elf64_ia64_local_hash_entry *) ptr; 961 962 return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); 963 } 964 965 /* Compare local hash entries. */ 966 967 static int 968 elf64_ia64_local_htab_eq (const void *ptr1, const void *ptr2) 969 { 970 struct elf64_ia64_local_hash_entry *entry1 971 = (struct elf64_ia64_local_hash_entry *) ptr1; 972 struct elf64_ia64_local_hash_entry *entry2 973 = (struct elf64_ia64_local_hash_entry *) ptr2; 974 975 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; 976 } 977 978 /* Free the global elf64_ia64_dyn_sym_info array. */ 979 980 static bfd_boolean 981 elf64_ia64_global_dyn_info_free (void **xentry, 982 void * unused ATTRIBUTE_UNUSED) 983 { 984 struct elf64_ia64_link_hash_entry *entry 985 = (struct elf64_ia64_link_hash_entry *) xentry; 986 987 if (entry->root.root.type == bfd_link_hash_warning) 988 entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link; 989 990 if (entry->info) 991 { 992 free (entry->info); 993 entry->info = NULL; 994 entry->count = 0; 995 entry->sorted_count = 0; 996 entry->size = 0; 997 } 998 999 return TRUE; 1000 } 1001 1002 /* Free the local elf64_ia64_dyn_sym_info array. */ 1003 1004 static bfd_boolean 1005 elf64_ia64_local_dyn_info_free (void **slot, 1006 void * unused ATTRIBUTE_UNUSED) 1007 { 1008 struct elf64_ia64_local_hash_entry *entry 1009 = (struct elf64_ia64_local_hash_entry *) *slot; 1010 1011 if (entry->info) 1012 { 1013 free (entry->info); 1014 entry->info = NULL; 1015 entry->count = 0; 1016 entry->sorted_count = 0; 1017 entry->size = 0; 1018 } 1019 1020 return TRUE; 1021 } 1022 1023 /* Destroy IA-64 linker hash table. */ 1024 1025 static void 1026 elf64_ia64_link_hash_table_free (bfd *obfd) 1027 { 1028 struct elf64_ia64_link_hash_table *ia64_info 1029 = (struct elf64_ia64_link_hash_table *) obfd->link.hash; 1030 if (ia64_info->loc_hash_table) 1031 { 1032 htab_traverse (ia64_info->loc_hash_table, 1033 elf64_ia64_local_dyn_info_free, NULL); 1034 htab_delete (ia64_info->loc_hash_table); 1035 } 1036 if (ia64_info->loc_hash_memory) 1037 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); 1038 elf_link_hash_traverse (&ia64_info->root, 1039 elf64_ia64_global_dyn_info_free, NULL); 1040 _bfd_elf_link_hash_table_free (obfd); 1041 } 1042 1043 /* Create the derived linker hash table. The IA-64 ELF port uses this 1044 derived hash table to keep information specific to the IA-64 ElF 1045 linker (without using static variables). */ 1046 1047 static struct bfd_link_hash_table * 1048 elf64_ia64_hash_table_create (bfd *abfd) 1049 { 1050 struct elf64_ia64_link_hash_table *ret; 1051 1052 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); 1053 if (!ret) 1054 return NULL; 1055 1056 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, 1057 elf64_ia64_new_elf_hash_entry, 1058 sizeof (struct elf64_ia64_link_hash_entry), 1059 IA64_ELF_DATA)) 1060 { 1061 free (ret); 1062 return NULL; 1063 } 1064 1065 ret->loc_hash_table = htab_try_create (1024, elf64_ia64_local_htab_hash, 1066 elf64_ia64_local_htab_eq, NULL); 1067 ret->loc_hash_memory = objalloc_create (); 1068 if (!ret->loc_hash_table || !ret->loc_hash_memory) 1069 { 1070 elf64_ia64_link_hash_table_free (abfd); 1071 return NULL; 1072 } 1073 ret->root.root.hash_table_free = elf64_ia64_link_hash_table_free; 1074 1075 return &ret->root.root; 1076 } 1077 1078 /* Traverse both local and global hash tables. */ 1079 1080 struct elf64_ia64_dyn_sym_traverse_data 1081 { 1082 bfd_boolean (*func) (struct elf64_ia64_dyn_sym_info *, void *); 1083 void * data; 1084 }; 1085 1086 static bfd_boolean 1087 elf64_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, 1088 void * xdata) 1089 { 1090 struct elf64_ia64_link_hash_entry *entry 1091 = (struct elf64_ia64_link_hash_entry *) xentry; 1092 struct elf64_ia64_dyn_sym_traverse_data *data 1093 = (struct elf64_ia64_dyn_sym_traverse_data *) xdata; 1094 struct elf64_ia64_dyn_sym_info *dyn_i; 1095 unsigned int count; 1096 1097 if (entry->root.root.type == bfd_link_hash_warning) 1098 entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link; 1099 1100 for (count = entry->count, dyn_i = entry->info; 1101 count != 0; 1102 count--, dyn_i++) 1103 if (! (*data->func) (dyn_i, data->data)) 1104 return FALSE; 1105 return TRUE; 1106 } 1107 1108 static bfd_boolean 1109 elf64_ia64_local_dyn_sym_thunk (void **slot, void * xdata) 1110 { 1111 struct elf64_ia64_local_hash_entry *entry 1112 = (struct elf64_ia64_local_hash_entry *) *slot; 1113 struct elf64_ia64_dyn_sym_traverse_data *data 1114 = (struct elf64_ia64_dyn_sym_traverse_data *) xdata; 1115 struct elf64_ia64_dyn_sym_info *dyn_i; 1116 unsigned int count; 1117 1118 for (count = entry->count, dyn_i = entry->info; 1119 count != 0; 1120 count--, dyn_i++) 1121 if (! (*data->func) (dyn_i, data->data)) 1122 return FALSE; 1123 return TRUE; 1124 } 1125 1126 static void 1127 elf64_ia64_dyn_sym_traverse (struct elf64_ia64_link_hash_table *ia64_info, 1128 bfd_boolean (*func) (struct elf64_ia64_dyn_sym_info *, void *), 1129 void * data) 1130 { 1131 struct elf64_ia64_dyn_sym_traverse_data xdata; 1132 1133 xdata.func = func; 1134 xdata.data = data; 1135 1136 elf_link_hash_traverse (&ia64_info->root, 1137 elf64_ia64_global_dyn_sym_thunk, &xdata); 1138 htab_traverse (ia64_info->loc_hash_table, 1139 elf64_ia64_local_dyn_sym_thunk, &xdata); 1140 } 1141 1142 #define NOTE_NAME "IPF/VMS" 1143 1144 static bfd_boolean 1145 create_ia64_vms_notes (bfd *abfd, struct bfd_link_info *info, 1146 unsigned int time_hi, unsigned int time_lo) 1147 { 1148 #define NBR_NOTES 7 1149 Elf_Internal_Note notes[NBR_NOTES]; 1150 char *module_name; 1151 int module_name_len; 1152 unsigned char cur_time[8]; 1153 Elf64_External_VMS_ORIG_DYN_Note *orig_dyn; 1154 unsigned int orig_dyn_size; 1155 unsigned int note_size; 1156 int i; 1157 unsigned char *noteptr; 1158 unsigned char *note_contents; 1159 struct elf64_ia64_link_hash_table *ia64_info; 1160 1161 ia64_info = elf64_ia64_hash_table (info); 1162 1163 module_name = vms_get_module_name (bfd_get_filename (abfd), TRUE); 1164 module_name_len = strlen (module_name) + 1; 1165 1166 bfd_putl32 (time_lo, cur_time + 0); 1167 bfd_putl32 (time_hi, cur_time + 4); 1168 1169 /* Note 0: IMGNAM. */ 1170 notes[0].type = NT_VMS_IMGNAM; 1171 notes[0].descdata = module_name; 1172 notes[0].descsz = module_name_len; 1173 1174 /* Note 1: GSTNAM. */ 1175 notes[1].type = NT_VMS_GSTNAM; 1176 notes[1].descdata = module_name; 1177 notes[1].descsz = module_name_len; 1178 1179 /* Note 2: IMGID. */ 1180 #define IMG_ID "V1.0" 1181 notes[2].type = NT_VMS_IMGID; 1182 notes[2].descdata = IMG_ID; 1183 notes[2].descsz = sizeof (IMG_ID); 1184 1185 /* Note 3: Linktime. */ 1186 notes[3].type = NT_VMS_LINKTIME; 1187 notes[3].descdata = (char *)cur_time; 1188 notes[3].descsz = sizeof (cur_time); 1189 1190 /* Note 4: Linker id. */ 1191 notes[4].type = NT_VMS_LINKID; 1192 notes[4].descdata = "GNU ld " BFD_VERSION_STRING; 1193 notes[4].descsz = strlen (notes[4].descdata) + 1; 1194 1195 /* Note 5: Original dyn. */ 1196 orig_dyn_size = (sizeof (*orig_dyn) + sizeof (IMG_ID) - 1 + 7) & ~7; 1197 orig_dyn = bfd_zalloc (abfd, orig_dyn_size); 1198 if (orig_dyn == NULL) 1199 return FALSE; 1200 bfd_putl32 (1, orig_dyn->major_id); 1201 bfd_putl32 (3, orig_dyn->minor_id); 1202 memcpy (orig_dyn->manipulation_date, cur_time, sizeof (cur_time)); 1203 bfd_putl64 (VMS_LF_IMGSTA | VMS_LF_MAIN, orig_dyn->link_flags); 1204 bfd_putl32 (EF_IA_64_ABI64, orig_dyn->elf_flags); 1205 memcpy (orig_dyn->imgid, IMG_ID, sizeof (IMG_ID)); 1206 notes[5].type = NT_VMS_ORIG_DYN; 1207 notes[5].descdata = (char *)orig_dyn; 1208 notes[5].descsz = orig_dyn_size; 1209 1210 /* Note 3: Patchtime. */ 1211 notes[6].type = NT_VMS_PATCHTIME; 1212 notes[6].descdata = (char *)cur_time; 1213 notes[6].descsz = sizeof (cur_time); 1214 1215 /* Compute notes size. */ 1216 note_size = 0; 1217 for (i = 0; i < NBR_NOTES; i++) 1218 note_size += sizeof (Elf64_External_VMS_Note) - 1 1219 + ((sizeof (NOTE_NAME) - 1 + 7) & ~7) 1220 + ((notes[i].descsz + 7) & ~7); 1221 1222 /* Malloc a temporary buffer large enough for most notes */ 1223 note_contents = (unsigned char *) bfd_zalloc (abfd, note_size); 1224 if (note_contents == NULL) 1225 return FALSE; 1226 noteptr = note_contents; 1227 1228 /* Fill notes. */ 1229 for (i = 0; i < NBR_NOTES; i++) 1230 { 1231 Elf64_External_VMS_Note *enote = (Elf64_External_VMS_Note *) noteptr; 1232 1233 bfd_putl64 (sizeof (NOTE_NAME) - 1, enote->namesz); 1234 bfd_putl64 (notes[i].descsz, enote->descsz); 1235 bfd_putl64 (notes[i].type, enote->type); 1236 1237 noteptr = (unsigned char *)enote->name; 1238 memcpy (noteptr, NOTE_NAME, sizeof (NOTE_NAME) - 1); 1239 noteptr += (sizeof (NOTE_NAME) - 1 + 7) & ~7; 1240 memcpy (noteptr, notes[i].descdata, notes[i].descsz); 1241 noteptr += (notes[i].descsz + 7) & ~7; 1242 } 1243 1244 ia64_info->note_sec->contents = note_contents; 1245 ia64_info->note_sec->size = note_size; 1246 1247 free (module_name); 1248 1249 return TRUE; 1250 } 1251 1252 static bfd_boolean 1253 elf64_ia64_create_dynamic_sections (bfd *abfd, 1254 struct bfd_link_info *info) 1255 { 1256 struct elf64_ia64_link_hash_table *ia64_info; 1257 asection *s; 1258 flagword flags; 1259 const struct elf_backend_data *bed; 1260 1261 ia64_info = elf64_ia64_hash_table (info); 1262 if (ia64_info == NULL) 1263 return FALSE; 1264 1265 if (elf_hash_table (info)->dynamic_sections_created) 1266 return TRUE; 1267 1268 abfd = elf_hash_table (info)->dynobj; 1269 bed = get_elf_backend_data (abfd); 1270 1271 flags = bed->dynamic_sec_flags; 1272 1273 s = bfd_make_section_anyway_with_flags (abfd, ".dynamic", 1274 flags | SEC_READONLY); 1275 if (s == NULL 1276 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) 1277 return FALSE; 1278 1279 s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags | SEC_READONLY); 1280 if (s == NULL 1281 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1282 return FALSE; 1283 ia64_info->root.splt = s; 1284 1285 if (!get_got (abfd, ia64_info)) 1286 return FALSE; 1287 1288 if (!get_pltoff (abfd, ia64_info)) 1289 return FALSE; 1290 1291 s = bfd_make_section_anyway_with_flags (abfd, ".vmsdynstr", 1292 (SEC_ALLOC 1293 | SEC_HAS_CONTENTS 1294 | SEC_IN_MEMORY 1295 | SEC_LINKER_CREATED)); 1296 if (s == NULL 1297 || !bfd_set_section_alignment (abfd, s, 0)) 1298 return FALSE; 1299 1300 /* Create a fixup section. */ 1301 s = bfd_make_section_anyway_with_flags (abfd, ".fixups", 1302 (SEC_ALLOC 1303 | SEC_HAS_CONTENTS 1304 | SEC_IN_MEMORY 1305 | SEC_LINKER_CREATED)); 1306 if (s == NULL 1307 || !bfd_set_section_alignment (abfd, s, 3)) 1308 return FALSE; 1309 ia64_info->fixups_sec = s; 1310 1311 /* Create the transfer fixup section. */ 1312 s = bfd_make_section_anyway_with_flags (abfd, ".transfer", 1313 (SEC_ALLOC 1314 | SEC_HAS_CONTENTS 1315 | SEC_IN_MEMORY 1316 | SEC_LINKER_CREATED)); 1317 if (s == NULL 1318 || !bfd_set_section_alignment (abfd, s, 3)) 1319 return FALSE; 1320 s->size = sizeof (struct elf64_vms_transfer); 1321 ia64_info->transfer_sec = s; 1322 1323 /* Create note section. */ 1324 s = bfd_make_section_anyway_with_flags (abfd, ".vms.note", 1325 (SEC_LINKER_CREATED 1326 | SEC_HAS_CONTENTS 1327 | SEC_IN_MEMORY 1328 | SEC_READONLY)); 1329 if (s == NULL 1330 || !bfd_set_section_alignment (abfd, s, 3)) 1331 return FALSE; 1332 ia64_info->note_sec = s; 1333 1334 elf_hash_table (info)->dynamic_sections_created = TRUE; 1335 return TRUE; 1336 } 1337 1338 /* Find and/or create a hash entry for local symbol. */ 1339 static struct elf64_ia64_local_hash_entry * 1340 get_local_sym_hash (struct elf64_ia64_link_hash_table *ia64_info, 1341 bfd *abfd, const Elf_Internal_Rela *rel, 1342 bfd_boolean create) 1343 { 1344 struct elf64_ia64_local_hash_entry e, *ret; 1345 asection *sec = abfd->sections; 1346 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, 1347 ELF64_R_SYM (rel->r_info)); 1348 void **slot; 1349 1350 e.id = sec->id; 1351 e.r_sym = ELF64_R_SYM (rel->r_info); 1352 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, 1353 create ? INSERT : NO_INSERT); 1354 1355 if (!slot) 1356 return NULL; 1357 1358 if (*slot) 1359 return (struct elf64_ia64_local_hash_entry *) *slot; 1360 1361 ret = (struct elf64_ia64_local_hash_entry *) 1362 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, 1363 sizeof (struct elf64_ia64_local_hash_entry)); 1364 if (ret) 1365 { 1366 memset (ret, 0, sizeof (*ret)); 1367 ret->id = sec->id; 1368 ret->r_sym = ELF64_R_SYM (rel->r_info); 1369 *slot = ret; 1370 } 1371 return ret; 1372 } 1373 1374 /* Used to sort elf64_ia64_dyn_sym_info array. */ 1375 1376 static int 1377 addend_compare (const void *xp, const void *yp) 1378 { 1379 const struct elf64_ia64_dyn_sym_info *x 1380 = (const struct elf64_ia64_dyn_sym_info *) xp; 1381 const struct elf64_ia64_dyn_sym_info *y 1382 = (const struct elf64_ia64_dyn_sym_info *) yp; 1383 1384 return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; 1385 } 1386 1387 /* Sort elf64_ia64_dyn_sym_info array and remove duplicates. */ 1388 1389 static unsigned int 1390 sort_dyn_sym_info (struct elf64_ia64_dyn_sym_info *info, 1391 unsigned int count) 1392 { 1393 bfd_vma curr, prev, got_offset; 1394 unsigned int i, kept, dupes, diff, dest, src, len; 1395 1396 qsort (info, count, sizeof (*info), addend_compare); 1397 1398 /* Find the first duplicate. */ 1399 prev = info [0].addend; 1400 got_offset = info [0].got_offset; 1401 for (i = 1; i < count; i++) 1402 { 1403 curr = info [i].addend; 1404 if (curr == prev) 1405 { 1406 /* For duplicates, make sure that GOT_OFFSET is valid. */ 1407 if (got_offset == (bfd_vma) -1) 1408 got_offset = info [i].got_offset; 1409 break; 1410 } 1411 got_offset = info [i].got_offset; 1412 prev = curr; 1413 } 1414 1415 /* We may move a block of elements to here. */ 1416 dest = i++; 1417 1418 /* Remove duplicates. */ 1419 if (i < count) 1420 { 1421 while (i < count) 1422 { 1423 /* For duplicates, make sure that the kept one has a valid 1424 got_offset. */ 1425 kept = dest - 1; 1426 if (got_offset != (bfd_vma) -1) 1427 info [kept].got_offset = got_offset; 1428 1429 curr = info [i].addend; 1430 got_offset = info [i].got_offset; 1431 1432 /* Move a block of elements whose first one is different from 1433 the previous. */ 1434 if (curr == prev) 1435 { 1436 for (src = i + 1; src < count; src++) 1437 { 1438 if (info [src].addend != curr) 1439 break; 1440 /* For duplicates, make sure that GOT_OFFSET is 1441 valid. */ 1442 if (got_offset == (bfd_vma) -1) 1443 got_offset = info [src].got_offset; 1444 } 1445 1446 /* Make sure that the kept one has a valid got_offset. */ 1447 if (got_offset != (bfd_vma) -1) 1448 info [kept].got_offset = got_offset; 1449 } 1450 else 1451 src = i; 1452 1453 if (src >= count) 1454 break; 1455 1456 /* Find the next duplicate. SRC will be kept. */ 1457 prev = info [src].addend; 1458 got_offset = info [src].got_offset; 1459 for (dupes = src + 1; dupes < count; dupes ++) 1460 { 1461 curr = info [dupes].addend; 1462 if (curr == prev) 1463 { 1464 /* Make sure that got_offset is valid. */ 1465 if (got_offset == (bfd_vma) -1) 1466 got_offset = info [dupes].got_offset; 1467 1468 /* For duplicates, make sure that the kept one has 1469 a valid got_offset. */ 1470 if (got_offset != (bfd_vma) -1) 1471 info [dupes - 1].got_offset = got_offset; 1472 break; 1473 } 1474 got_offset = info [dupes].got_offset; 1475 prev = curr; 1476 } 1477 1478 /* How much to move. */ 1479 len = dupes - src; 1480 i = dupes + 1; 1481 1482 if (len == 1 && dupes < count) 1483 { 1484 /* If we only move 1 element, we combine it with the next 1485 one. There must be at least a duplicate. Find the 1486 next different one. */ 1487 for (diff = dupes + 1, src++; diff < count; diff++, src++) 1488 { 1489 if (info [diff].addend != curr) 1490 break; 1491 /* Make sure that got_offset is valid. */ 1492 if (got_offset == (bfd_vma) -1) 1493 got_offset = info [diff].got_offset; 1494 } 1495 1496 /* Makre sure that the last duplicated one has an valid 1497 offset. */ 1498 BFD_ASSERT (curr == prev); 1499 if (got_offset != (bfd_vma) -1) 1500 info [diff - 1].got_offset = got_offset; 1501 1502 if (diff < count) 1503 { 1504 /* Find the next duplicate. Track the current valid 1505 offset. */ 1506 prev = info [diff].addend; 1507 got_offset = info [diff].got_offset; 1508 for (dupes = diff + 1; dupes < count; dupes ++) 1509 { 1510 curr = info [dupes].addend; 1511 if (curr == prev) 1512 { 1513 /* For duplicates, make sure that GOT_OFFSET 1514 is valid. */ 1515 if (got_offset == (bfd_vma) -1) 1516 got_offset = info [dupes].got_offset; 1517 break; 1518 } 1519 got_offset = info [dupes].got_offset; 1520 prev = curr; 1521 diff++; 1522 } 1523 1524 len = diff - src + 1; 1525 i = diff + 1; 1526 } 1527 } 1528 1529 memmove (&info [dest], &info [src], len * sizeof (*info)); 1530 1531 dest += len; 1532 } 1533 1534 count = dest; 1535 } 1536 else 1537 { 1538 /* When we get here, either there is no duplicate at all or 1539 the only duplicate is the last element. */ 1540 if (dest < count) 1541 { 1542 /* If the last element is a duplicate, make sure that the 1543 kept one has a valid got_offset. We also update count. */ 1544 if (got_offset != (bfd_vma) -1) 1545 info [dest - 1].got_offset = got_offset; 1546 count = dest; 1547 } 1548 } 1549 1550 return count; 1551 } 1552 1553 /* Find and/or create a descriptor for dynamic symbol info. This will 1554 vary based on global or local symbol, and the addend to the reloc. 1555 1556 We don't sort when inserting. Also, we sort and eliminate 1557 duplicates if there is an unsorted section. Typically, this will 1558 only happen once, because we do all insertions before lookups. We 1559 then use bsearch to do a lookup. This also allows lookups to be 1560 fast. So we have fast insertion (O(log N) due to duplicate check), 1561 fast lookup (O(log N)) and one sort (O(N log N) expected time). 1562 Previously, all lookups were O(N) because of the use of the linked 1563 list and also all insertions were O(N) because of the check for 1564 duplicates. There are some complications here because the array 1565 size grows occasionally, which may add an O(N) factor, but this 1566 should be rare. Also, we free the excess array allocation, which 1567 requires a copy which is O(N), but this only happens once. */ 1568 1569 static struct elf64_ia64_dyn_sym_info * 1570 get_dyn_sym_info (struct elf64_ia64_link_hash_table *ia64_info, 1571 struct elf_link_hash_entry *h, bfd *abfd, 1572 const Elf_Internal_Rela *rel, bfd_boolean create) 1573 { 1574 struct elf64_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; 1575 unsigned int *count_p, *sorted_count_p, *size_p; 1576 unsigned int count, sorted_count, size; 1577 bfd_vma addend = rel ? rel->r_addend : 0; 1578 bfd_size_type amt; 1579 1580 if (h) 1581 { 1582 struct elf64_ia64_link_hash_entry *global_h; 1583 1584 global_h = (struct elf64_ia64_link_hash_entry *) h; 1585 info_p = &global_h->info; 1586 count_p = &global_h->count; 1587 sorted_count_p = &global_h->sorted_count; 1588 size_p = &global_h->size; 1589 } 1590 else 1591 { 1592 struct elf64_ia64_local_hash_entry *loc_h; 1593 1594 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); 1595 if (!loc_h) 1596 { 1597 BFD_ASSERT (!create); 1598 return NULL; 1599 } 1600 1601 info_p = &loc_h->info; 1602 count_p = &loc_h->count; 1603 sorted_count_p = &loc_h->sorted_count; 1604 size_p = &loc_h->size; 1605 } 1606 1607 count = *count_p; 1608 sorted_count = *sorted_count_p; 1609 size = *size_p; 1610 info = *info_p; 1611 if (create) 1612 { 1613 /* When we create the array, we don't check for duplicates, 1614 except in the previously sorted section if one exists, and 1615 against the last inserted entry. This allows insertions to 1616 be fast. */ 1617 if (info) 1618 { 1619 if (sorted_count) 1620 { 1621 /* Try bsearch first on the sorted section. */ 1622 key.addend = addend; 1623 dyn_i = bsearch (&key, info, sorted_count, 1624 sizeof (*info), addend_compare); 1625 1626 if (dyn_i) 1627 { 1628 return dyn_i; 1629 } 1630 } 1631 1632 /* Do a quick check for the last inserted entry. */ 1633 dyn_i = info + count - 1; 1634 if (dyn_i->addend == addend) 1635 { 1636 return dyn_i; 1637 } 1638 } 1639 1640 if (size == 0) 1641 { 1642 /* It is the very first element. We create the array of size 1643 1. */ 1644 size = 1; 1645 amt = size * sizeof (*info); 1646 info = bfd_malloc (amt); 1647 } 1648 else if (size <= count) 1649 { 1650 /* We double the array size every time when we reach the 1651 size limit. */ 1652 size += size; 1653 amt = size * sizeof (*info); 1654 info = bfd_realloc (info, amt); 1655 } 1656 else 1657 goto has_space; 1658 1659 if (info == NULL) 1660 return NULL; 1661 *size_p = size; 1662 *info_p = info; 1663 1664 has_space: 1665 /* Append the new one to the array. */ 1666 dyn_i = info + count; 1667 memset (dyn_i, 0, sizeof (*dyn_i)); 1668 dyn_i->got_offset = (bfd_vma) -1; 1669 dyn_i->addend = addend; 1670 1671 /* We increment count only since the new ones are unsorted and 1672 may have duplicate. */ 1673 (*count_p)++; 1674 } 1675 else 1676 { 1677 /* It is a lookup without insertion. Sort array if part of the 1678 array isn't sorted. */ 1679 if (count != sorted_count) 1680 { 1681 count = sort_dyn_sym_info (info, count); 1682 *count_p = count; 1683 *sorted_count_p = count; 1684 } 1685 1686 /* Free unused memory. */ 1687 if (size != count) 1688 { 1689 amt = count * sizeof (*info); 1690 info = bfd_malloc (amt); 1691 if (info != NULL) 1692 { 1693 memcpy (info, *info_p, amt); 1694 free (*info_p); 1695 *size_p = count; 1696 *info_p = info; 1697 } 1698 } 1699 1700 key.addend = addend; 1701 dyn_i = bsearch (&key, info, count, 1702 sizeof (*info), addend_compare); 1703 } 1704 1705 return dyn_i; 1706 } 1707 1708 static asection * 1709 get_got (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info) 1710 { 1711 asection *got; 1712 bfd *dynobj; 1713 1714 got = ia64_info->root.sgot; 1715 if (!got) 1716 { 1717 flagword flags; 1718 1719 dynobj = ia64_info->root.dynobj; 1720 if (!dynobj) 1721 ia64_info->root.dynobj = dynobj = abfd; 1722 1723 /* The .got section is always aligned at 8 bytes. */ 1724 flags = get_elf_backend_data (dynobj)->dynamic_sec_flags; 1725 got = bfd_make_section_anyway_with_flags (dynobj, ".got", 1726 flags | SEC_SMALL_DATA); 1727 if (got == NULL 1728 || !bfd_set_section_alignment (dynobj, got, 3)) 1729 return NULL; 1730 ia64_info->root.sgot = got; 1731 } 1732 1733 return got; 1734 } 1735 1736 /* Create function descriptor section (.opd). This section is called .opd 1737 because it contains "official procedure descriptors". The "official" 1738 refers to the fact that these descriptors are used when taking the address 1739 of a procedure, thus ensuring a unique address for each procedure. */ 1740 1741 static asection * 1742 get_fptr (bfd *abfd, struct bfd_link_info *info, 1743 struct elf64_ia64_link_hash_table *ia64_info) 1744 { 1745 asection *fptr; 1746 bfd *dynobj; 1747 1748 fptr = ia64_info->fptr_sec; 1749 if (!fptr) 1750 { 1751 dynobj = ia64_info->root.dynobj; 1752 if (!dynobj) 1753 ia64_info->root.dynobj = dynobj = abfd; 1754 1755 fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd", 1756 (SEC_ALLOC 1757 | SEC_LOAD 1758 | SEC_HAS_CONTENTS 1759 | SEC_IN_MEMORY 1760 | (info->pie ? 0 1761 : SEC_READONLY) 1762 | SEC_LINKER_CREATED)); 1763 if (!fptr 1764 || !bfd_set_section_alignment (dynobj, fptr, 4)) 1765 { 1766 BFD_ASSERT (0); 1767 return NULL; 1768 } 1769 1770 ia64_info->fptr_sec = fptr; 1771 1772 if (info->pie) 1773 { 1774 asection *fptr_rel; 1775 fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd", 1776 (SEC_ALLOC | SEC_LOAD 1777 | SEC_HAS_CONTENTS 1778 | SEC_IN_MEMORY 1779 | SEC_LINKER_CREATED 1780 | SEC_READONLY)); 1781 if (fptr_rel == NULL 1782 || !bfd_set_section_alignment (dynobj, fptr_rel, 3)) 1783 { 1784 BFD_ASSERT (0); 1785 return NULL; 1786 } 1787 1788 ia64_info->rel_fptr_sec = fptr_rel; 1789 } 1790 } 1791 1792 return fptr; 1793 } 1794 1795 static asection * 1796 get_pltoff (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info) 1797 { 1798 asection *pltoff; 1799 bfd *dynobj; 1800 1801 pltoff = ia64_info->pltoff_sec; 1802 if (!pltoff) 1803 { 1804 dynobj = ia64_info->root.dynobj; 1805 if (!dynobj) 1806 ia64_info->root.dynobj = dynobj = abfd; 1807 1808 pltoff = bfd_make_section_anyway_with_flags (dynobj, 1809 ELF_STRING_ia64_pltoff, 1810 (SEC_ALLOC 1811 | SEC_LOAD 1812 | SEC_HAS_CONTENTS 1813 | SEC_IN_MEMORY 1814 | SEC_SMALL_DATA 1815 | SEC_LINKER_CREATED)); 1816 if (!pltoff 1817 || !bfd_set_section_alignment (dynobj, pltoff, 4)) 1818 { 1819 BFD_ASSERT (0); 1820 return NULL; 1821 } 1822 1823 ia64_info->pltoff_sec = pltoff; 1824 } 1825 1826 return pltoff; 1827 } 1828 1829 static asection * 1830 get_reloc_section (bfd *abfd, 1831 struct elf64_ia64_link_hash_table *ia64_info, 1832 asection *sec, bfd_boolean create) 1833 { 1834 const char *srel_name; 1835 asection *srel; 1836 bfd *dynobj; 1837 1838 srel_name = (bfd_elf_string_from_elf_section 1839 (abfd, elf_elfheader(abfd)->e_shstrndx, 1840 _bfd_elf_single_rel_hdr (sec)->sh_name)); 1841 if (srel_name == NULL) 1842 return NULL; 1843 1844 BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela") 1845 && strcmp (bfd_get_section_name (abfd, sec), 1846 srel_name+5) == 0) 1847 || (CONST_STRNEQ (srel_name, ".rel") 1848 && strcmp (bfd_get_section_name (abfd, sec), 1849 srel_name+4) == 0)); 1850 1851 dynobj = ia64_info->root.dynobj; 1852 if (!dynobj) 1853 ia64_info->root.dynobj = dynobj = abfd; 1854 1855 srel = bfd_get_linker_section (dynobj, srel_name); 1856 if (srel == NULL && create) 1857 { 1858 srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, 1859 (SEC_ALLOC | SEC_LOAD 1860 | SEC_HAS_CONTENTS 1861 | SEC_IN_MEMORY 1862 | SEC_LINKER_CREATED 1863 | SEC_READONLY)); 1864 if (srel == NULL 1865 || !bfd_set_section_alignment (dynobj, srel, 3)) 1866 return NULL; 1867 } 1868 1869 return srel; 1870 } 1871 1872 static bfd_boolean 1873 count_dyn_reloc (bfd *abfd, struct elf64_ia64_dyn_sym_info *dyn_i, 1874 asection *srel, int type) 1875 { 1876 struct elf64_ia64_dyn_reloc_entry *rent; 1877 1878 for (rent = dyn_i->reloc_entries; rent; rent = rent->next) 1879 if (rent->srel == srel && rent->type == type) 1880 break; 1881 1882 if (!rent) 1883 { 1884 rent = ((struct elf64_ia64_dyn_reloc_entry *) 1885 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); 1886 if (!rent) 1887 return FALSE; 1888 1889 rent->next = dyn_i->reloc_entries; 1890 rent->srel = srel; 1891 rent->type = type; 1892 rent->count = 0; 1893 dyn_i->reloc_entries = rent; 1894 } 1895 rent->count++; 1896 1897 return TRUE; 1898 } 1899 1900 static bfd_boolean 1901 elf64_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, 1902 asection *sec, 1903 const Elf_Internal_Rela *relocs) 1904 { 1905 struct elf64_ia64_link_hash_table *ia64_info; 1906 const Elf_Internal_Rela *relend; 1907 Elf_Internal_Shdr *symtab_hdr; 1908 const Elf_Internal_Rela *rel; 1909 asection *got, *fptr, *srel, *pltoff; 1910 enum { 1911 NEED_GOT = 1, 1912 NEED_GOTX = 2, 1913 NEED_FPTR = 4, 1914 NEED_PLTOFF = 8, 1915 NEED_MIN_PLT = 16, 1916 NEED_FULL_PLT = 32, 1917 NEED_DYNREL = 64, 1918 NEED_LTOFF_FPTR = 128 1919 }; 1920 int need_entry; 1921 struct elf_link_hash_entry *h; 1922 unsigned long r_symndx; 1923 bfd_boolean maybe_dynamic; 1924 1925 if (info->relocatable) 1926 return TRUE; 1927 1928 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1929 ia64_info = elf64_ia64_hash_table (info); 1930 if (ia64_info == NULL) 1931 return FALSE; 1932 1933 got = fptr = srel = pltoff = NULL; 1934 1935 relend = relocs + sec->reloc_count; 1936 1937 /* We scan relocations first to create dynamic relocation arrays. We 1938 modified get_dyn_sym_info to allow fast insertion and support fast 1939 lookup in the next loop. */ 1940 for (rel = relocs; rel < relend; ++rel) 1941 { 1942 r_symndx = ELF64_R_SYM (rel->r_info); 1943 if (r_symndx >= symtab_hdr->sh_info) 1944 { 1945 long indx = r_symndx - symtab_hdr->sh_info; 1946 h = elf_sym_hashes (abfd)[indx]; 1947 while (h->root.type == bfd_link_hash_indirect 1948 || h->root.type == bfd_link_hash_warning) 1949 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1950 } 1951 else 1952 h = NULL; 1953 1954 /* We can only get preliminary data on whether a symbol is 1955 locally or externally defined, as not all of the input files 1956 have yet been processed. Do something with what we know, as 1957 this may help reduce memory usage and processing time later. */ 1958 maybe_dynamic = (h && ((!info->executable 1959 && (!SYMBOLIC_BIND (info, h) 1960 || info->unresolved_syms_in_shared_libs == RM_IGNORE)) 1961 || !h->def_regular 1962 || h->root.type == bfd_link_hash_defweak)); 1963 1964 need_entry = 0; 1965 switch (ELF64_R_TYPE (rel->r_info)) 1966 { 1967 case R_IA64_TPREL64MSB: 1968 case R_IA64_TPREL64LSB: 1969 case R_IA64_LTOFF_TPREL22: 1970 case R_IA64_DTPREL32MSB: 1971 case R_IA64_DTPREL32LSB: 1972 case R_IA64_DTPREL64MSB: 1973 case R_IA64_DTPREL64LSB: 1974 case R_IA64_LTOFF_DTPREL22: 1975 case R_IA64_DTPMOD64MSB: 1976 case R_IA64_DTPMOD64LSB: 1977 case R_IA64_LTOFF_DTPMOD22: 1978 abort (); 1979 break; 1980 1981 case R_IA64_IPLTMSB: 1982 case R_IA64_IPLTLSB: 1983 break; 1984 1985 case R_IA64_LTOFF_FPTR22: 1986 case R_IA64_LTOFF_FPTR64I: 1987 case R_IA64_LTOFF_FPTR32MSB: 1988 case R_IA64_LTOFF_FPTR32LSB: 1989 case R_IA64_LTOFF_FPTR64MSB: 1990 case R_IA64_LTOFF_FPTR64LSB: 1991 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; 1992 break; 1993 1994 case R_IA64_FPTR64I: 1995 case R_IA64_FPTR32MSB: 1996 case R_IA64_FPTR32LSB: 1997 case R_IA64_FPTR64MSB: 1998 case R_IA64_FPTR64LSB: 1999 if (info->shared || h) 2000 need_entry = NEED_FPTR | NEED_DYNREL; 2001 else 2002 need_entry = NEED_FPTR; 2003 break; 2004 2005 case R_IA64_LTOFF22: 2006 case R_IA64_LTOFF64I: 2007 need_entry = NEED_GOT; 2008 break; 2009 2010 case R_IA64_LTOFF22X: 2011 need_entry = NEED_GOTX; 2012 break; 2013 2014 case R_IA64_PLTOFF22: 2015 case R_IA64_PLTOFF64I: 2016 case R_IA64_PLTOFF64MSB: 2017 case R_IA64_PLTOFF64LSB: 2018 need_entry = NEED_PLTOFF; 2019 if (h) 2020 { 2021 if (maybe_dynamic) 2022 need_entry |= NEED_MIN_PLT; 2023 } 2024 else 2025 { 2026 (*info->callbacks->warning) 2027 (info, _("@pltoff reloc against local symbol"), 0, 2028 abfd, 0, (bfd_vma) 0); 2029 } 2030 break; 2031 2032 case R_IA64_PCREL21B: 2033 case R_IA64_PCREL60B: 2034 /* Depending on where this symbol is defined, we may or may not 2035 need a full plt entry. Only skip if we know we'll not need 2036 the entry -- static or symbolic, and the symbol definition 2037 has already been seen. */ 2038 if (maybe_dynamic && rel->r_addend == 0) 2039 need_entry = NEED_FULL_PLT; 2040 break; 2041 2042 case R_IA64_IMM14: 2043 case R_IA64_IMM22: 2044 case R_IA64_IMM64: 2045 case R_IA64_DIR32MSB: 2046 case R_IA64_DIR32LSB: 2047 case R_IA64_DIR64MSB: 2048 case R_IA64_DIR64LSB: 2049 /* Shared objects will always need at least a REL relocation. */ 2050 if (info->shared || maybe_dynamic) 2051 need_entry = NEED_DYNREL; 2052 break; 2053 2054 case R_IA64_PCREL22: 2055 case R_IA64_PCREL64I: 2056 case R_IA64_PCREL32MSB: 2057 case R_IA64_PCREL32LSB: 2058 case R_IA64_PCREL64MSB: 2059 case R_IA64_PCREL64LSB: 2060 if (maybe_dynamic) 2061 need_entry = NEED_DYNREL; 2062 break; 2063 } 2064 2065 if (!need_entry) 2066 continue; 2067 2068 if ((need_entry & NEED_FPTR) != 0 2069 && rel->r_addend) 2070 { 2071 (*info->callbacks->warning) 2072 (info, _("non-zero addend in @fptr reloc"), 0, 2073 abfd, 0, (bfd_vma) 0); 2074 } 2075 2076 if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) 2077 return FALSE; 2078 } 2079 2080 /* Now, we only do lookup without insertion, which is very fast 2081 with the modified get_dyn_sym_info. */ 2082 for (rel = relocs; rel < relend; ++rel) 2083 { 2084 struct elf64_ia64_dyn_sym_info *dyn_i; 2085 int dynrel_type = R_IA64_NONE; 2086 2087 r_symndx = ELF64_R_SYM (rel->r_info); 2088 if (r_symndx >= symtab_hdr->sh_info) 2089 { 2090 /* We're dealing with a global symbol -- find its hash entry 2091 and mark it as being referenced. */ 2092 long indx = r_symndx - symtab_hdr->sh_info; 2093 h = elf_sym_hashes (abfd)[indx]; 2094 while (h->root.type == bfd_link_hash_indirect 2095 || h->root.type == bfd_link_hash_warning) 2096 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2097 2098 /* PR15323, ref flags aren't set for references in the same 2099 object. */ 2100 h->root.non_ir_ref = 1; 2101 h->ref_regular = 1; 2102 } 2103 else 2104 h = NULL; 2105 2106 /* We can only get preliminary data on whether a symbol is 2107 locally or externally defined, as not all of the input files 2108 have yet been processed. Do something with what we know, as 2109 this may help reduce memory usage and processing time later. */ 2110 maybe_dynamic = (h && ((!info->executable 2111 && (!SYMBOLIC_BIND (info, h) 2112 || info->unresolved_syms_in_shared_libs == RM_IGNORE)) 2113 || !h->def_regular 2114 || h->root.type == bfd_link_hash_defweak)); 2115 2116 need_entry = 0; 2117 switch (ELF64_R_TYPE (rel->r_info)) 2118 { 2119 case R_IA64_TPREL64MSB: 2120 case R_IA64_TPREL64LSB: 2121 case R_IA64_LTOFF_TPREL22: 2122 case R_IA64_DTPREL32MSB: 2123 case R_IA64_DTPREL32LSB: 2124 case R_IA64_DTPREL64MSB: 2125 case R_IA64_DTPREL64LSB: 2126 case R_IA64_LTOFF_DTPREL22: 2127 case R_IA64_DTPMOD64MSB: 2128 case R_IA64_DTPMOD64LSB: 2129 case R_IA64_LTOFF_DTPMOD22: 2130 abort (); 2131 break; 2132 2133 case R_IA64_LTOFF_FPTR22: 2134 case R_IA64_LTOFF_FPTR64I: 2135 case R_IA64_LTOFF_FPTR32MSB: 2136 case R_IA64_LTOFF_FPTR32LSB: 2137 case R_IA64_LTOFF_FPTR64MSB: 2138 case R_IA64_LTOFF_FPTR64LSB: 2139 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; 2140 break; 2141 2142 case R_IA64_FPTR64I: 2143 case R_IA64_FPTR32MSB: 2144 case R_IA64_FPTR32LSB: 2145 case R_IA64_FPTR64MSB: 2146 case R_IA64_FPTR64LSB: 2147 if (info->shared || h) 2148 need_entry = NEED_FPTR | NEED_DYNREL; 2149 else 2150 need_entry = NEED_FPTR; 2151 dynrel_type = R_IA64_FPTR64LSB; 2152 break; 2153 2154 case R_IA64_LTOFF22: 2155 case R_IA64_LTOFF64I: 2156 need_entry = NEED_GOT; 2157 break; 2158 2159 case R_IA64_LTOFF22X: 2160 need_entry = NEED_GOTX; 2161 break; 2162 2163 case R_IA64_PLTOFF22: 2164 case R_IA64_PLTOFF64I: 2165 case R_IA64_PLTOFF64MSB: 2166 case R_IA64_PLTOFF64LSB: 2167 need_entry = NEED_PLTOFF; 2168 if (h) 2169 { 2170 if (maybe_dynamic) 2171 need_entry |= NEED_MIN_PLT; 2172 } 2173 break; 2174 2175 case R_IA64_PCREL21B: 2176 case R_IA64_PCREL60B: 2177 /* Depending on where this symbol is defined, we may or may not 2178 need a full plt entry. Only skip if we know we'll not need 2179 the entry -- static or symbolic, and the symbol definition 2180 has already been seen. */ 2181 if (maybe_dynamic && rel->r_addend == 0) 2182 need_entry = NEED_FULL_PLT; 2183 break; 2184 2185 case R_IA64_IMM14: 2186 case R_IA64_IMM22: 2187 case R_IA64_IMM64: 2188 case R_IA64_DIR32MSB: 2189 case R_IA64_DIR32LSB: 2190 case R_IA64_DIR64MSB: 2191 case R_IA64_DIR64LSB: 2192 /* Shared objects will always need at least a REL relocation. */ 2193 if (info->shared || maybe_dynamic) 2194 need_entry = NEED_DYNREL; 2195 dynrel_type = R_IA64_DIR64LSB; 2196 break; 2197 2198 case R_IA64_IPLTMSB: 2199 case R_IA64_IPLTLSB: 2200 break; 2201 2202 case R_IA64_PCREL22: 2203 case R_IA64_PCREL64I: 2204 case R_IA64_PCREL32MSB: 2205 case R_IA64_PCREL32LSB: 2206 case R_IA64_PCREL64MSB: 2207 case R_IA64_PCREL64LSB: 2208 if (maybe_dynamic) 2209 need_entry = NEED_DYNREL; 2210 dynrel_type = R_IA64_PCREL64LSB; 2211 break; 2212 } 2213 2214 if (!need_entry) 2215 continue; 2216 2217 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); 2218 2219 /* Record whether or not this is a local symbol. */ 2220 dyn_i->h = h; 2221 2222 /* Create what's needed. */ 2223 if (need_entry & (NEED_GOT | NEED_GOTX)) 2224 { 2225 if (!got) 2226 { 2227 got = get_got (abfd, ia64_info); 2228 if (!got) 2229 return FALSE; 2230 } 2231 if (need_entry & NEED_GOT) 2232 dyn_i->want_got = 1; 2233 if (need_entry & NEED_GOTX) 2234 dyn_i->want_gotx = 1; 2235 } 2236 if (need_entry & NEED_FPTR) 2237 { 2238 /* Create the .opd section. */ 2239 if (!fptr) 2240 { 2241 fptr = get_fptr (abfd, info, ia64_info); 2242 if (!fptr) 2243 return FALSE; 2244 } 2245 dyn_i->want_fptr = 1; 2246 } 2247 if (need_entry & NEED_LTOFF_FPTR) 2248 dyn_i->want_ltoff_fptr = 1; 2249 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) 2250 { 2251 if (!ia64_info->root.dynobj) 2252 ia64_info->root.dynobj = abfd; 2253 h->needs_plt = 1; 2254 dyn_i->want_plt = 1; 2255 } 2256 if (need_entry & NEED_FULL_PLT) 2257 dyn_i->want_plt2 = 1; 2258 if (need_entry & NEED_PLTOFF) 2259 { 2260 /* This is needed here, in case @pltoff is used in a non-shared 2261 link. */ 2262 if (!pltoff) 2263 { 2264 pltoff = get_pltoff (abfd, ia64_info); 2265 if (!pltoff) 2266 return FALSE; 2267 } 2268 2269 dyn_i->want_pltoff = 1; 2270 } 2271 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) 2272 { 2273 if (!srel) 2274 { 2275 srel = get_reloc_section (abfd, ia64_info, sec, TRUE); 2276 if (!srel) 2277 return FALSE; 2278 } 2279 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type)) 2280 return FALSE; 2281 } 2282 } 2283 2284 return TRUE; 2285 } 2286 2287 /* For cleanliness, and potentially faster dynamic loading, allocate 2288 external GOT entries first. */ 2289 2290 static bfd_boolean 2291 allocate_global_data_got (struct elf64_ia64_dyn_sym_info *dyn_i, 2292 void * data) 2293 { 2294 struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; 2295 2296 if ((dyn_i->want_got || dyn_i->want_gotx) 2297 && ! dyn_i->want_fptr 2298 && elf64_ia64_dynamic_symbol_p (dyn_i->h)) 2299 { 2300 /* GOT entry with FPTR is done by allocate_global_fptr_got. */ 2301 dyn_i->got_offset = x->ofs; 2302 x->ofs += 8; 2303 } 2304 return TRUE; 2305 } 2306 2307 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ 2308 2309 static bfd_boolean 2310 allocate_global_fptr_got (struct elf64_ia64_dyn_sym_info *dyn_i, 2311 void * data) 2312 { 2313 struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; 2314 2315 if (dyn_i->want_got 2316 && dyn_i->want_fptr 2317 && elf64_ia64_dynamic_symbol_p (dyn_i->h)) 2318 { 2319 dyn_i->got_offset = x->ofs; 2320 x->ofs += 8; 2321 } 2322 return TRUE; 2323 } 2324 2325 /* Lastly, allocate all the GOT entries for local data. */ 2326 2327 static bfd_boolean 2328 allocate_local_got (struct elf64_ia64_dyn_sym_info *dyn_i, 2329 void * data) 2330 { 2331 struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data; 2332 2333 if ((dyn_i->want_got || dyn_i->want_gotx) 2334 && !elf64_ia64_dynamic_symbol_p (dyn_i->h)) 2335 { 2336 dyn_i->got_offset = x->ofs; 2337 x->ofs += 8; 2338 } 2339 return TRUE; 2340 } 2341 2342 /* Allocate function descriptors. We can do these for every function 2343 in a main executable that is not exported. */ 2344 2345 static bfd_boolean 2346 allocate_fptr (struct elf64_ia64_dyn_sym_info *dyn_i, void * data) 2347 { 2348 struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data; 2349 2350 if (dyn_i->want_fptr) 2351 { 2352 struct elf_link_hash_entry *h = dyn_i->h; 2353 2354 if (h) 2355 while (h->root.type == bfd_link_hash_indirect 2356 || h->root.type == bfd_link_hash_warning) 2357 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2358 2359 if (h == NULL || !h->def_dynamic) 2360 { 2361 /* A non dynamic symbol. */ 2362 dyn_i->fptr_offset = x->ofs; 2363 x->ofs += 16; 2364 } 2365 else 2366 dyn_i->want_fptr = 0; 2367 } 2368 return TRUE; 2369 } 2370 2371 /* Allocate all the minimal PLT entries. */ 2372 2373 static bfd_boolean 2374 allocate_plt_entries (struct elf64_ia64_dyn_sym_info *dyn_i, 2375 void * data ATTRIBUTE_UNUSED) 2376 { 2377 if (dyn_i->want_plt) 2378 { 2379 struct elf_link_hash_entry *h = dyn_i->h; 2380 2381 if (h) 2382 while (h->root.type == bfd_link_hash_indirect 2383 || h->root.type == bfd_link_hash_warning) 2384 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2385 2386 /* ??? Versioned symbols seem to lose NEEDS_PLT. */ 2387 if (elf64_ia64_dynamic_symbol_p (h)) 2388 { 2389 dyn_i->want_pltoff = 1; 2390 } 2391 else 2392 { 2393 dyn_i->want_plt = 0; 2394 dyn_i->want_plt2 = 0; 2395 } 2396 } 2397 return TRUE; 2398 } 2399 2400 /* Allocate all the full PLT entries. */ 2401 2402 static bfd_boolean 2403 allocate_plt2_entries (struct elf64_ia64_dyn_sym_info *dyn_i, 2404 void * data) 2405 { 2406 struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; 2407 2408 if (dyn_i->want_plt2) 2409 { 2410 struct elf_link_hash_entry *h = dyn_i->h; 2411 bfd_size_type ofs = x->ofs; 2412 2413 dyn_i->plt2_offset = ofs; 2414 x->ofs = ofs + PLT_FULL_ENTRY_SIZE; 2415 2416 while (h->root.type == bfd_link_hash_indirect 2417 || h->root.type == bfd_link_hash_warning) 2418 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2419 dyn_i->h->plt.offset = ofs; 2420 } 2421 return TRUE; 2422 } 2423 2424 /* Allocate all the PLTOFF entries requested by relocations and 2425 plt entries. We can't share space with allocated FPTR entries, 2426 because the latter are not necessarily addressable by the GP. 2427 ??? Relaxation might be able to determine that they are. */ 2428 2429 static bfd_boolean 2430 allocate_pltoff_entries (struct elf64_ia64_dyn_sym_info *dyn_i, 2431 void * data) 2432 { 2433 struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; 2434 2435 if (dyn_i->want_pltoff) 2436 { 2437 dyn_i->pltoff_offset = x->ofs; 2438 x->ofs += 16; 2439 } 2440 return TRUE; 2441 } 2442 2443 /* Allocate dynamic relocations for those symbols that turned out 2444 to be dynamic. */ 2445 2446 static bfd_boolean 2447 allocate_dynrel_entries (struct elf64_ia64_dyn_sym_info *dyn_i, 2448 void * data) 2449 { 2450 struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; 2451 struct elf64_ia64_link_hash_table *ia64_info; 2452 struct elf64_ia64_dyn_reloc_entry *rent; 2453 bfd_boolean dynamic_symbol, shared, resolved_zero; 2454 struct elf64_ia64_link_hash_entry *h_ia64; 2455 2456 ia64_info = elf64_ia64_hash_table (x->info); 2457 if (ia64_info == NULL) 2458 return FALSE; 2459 2460 /* Note that this can't be used in relation to FPTR relocs below. */ 2461 dynamic_symbol = elf64_ia64_dynamic_symbol_p (dyn_i->h); 2462 2463 shared = x->info->shared; 2464 resolved_zero = (dyn_i->h 2465 && ELF_ST_VISIBILITY (dyn_i->h->other) 2466 && dyn_i->h->root.type == bfd_link_hash_undefweak); 2467 2468 /* Take care of the GOT and PLT relocations. */ 2469 2470 if ((!resolved_zero 2471 && (dynamic_symbol || shared) 2472 && (dyn_i->want_got || dyn_i->want_gotx)) 2473 || (dyn_i->want_ltoff_fptr 2474 && dyn_i->h 2475 && dyn_i->h->def_dynamic)) 2476 { 2477 /* VMS: FIX64. */ 2478 if (dyn_i->h != NULL && dyn_i->h->def_dynamic) 2479 { 2480 h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; 2481 elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += 2482 sizeof (Elf64_External_VMS_IMAGE_FIXUP); 2483 ia64_info->fixups_sec->size += 2484 sizeof (Elf64_External_VMS_IMAGE_FIXUP); 2485 } 2486 } 2487 2488 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) 2489 { 2490 /* VMS: only image reloc. */ 2491 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) 2492 ia64_info->rel_fptr_sec->size += sizeof (Elf64_External_Rela); 2493 } 2494 2495 if (!resolved_zero && dyn_i->want_pltoff) 2496 { 2497 /* VMS: FIXFD. */ 2498 if (dyn_i->h != NULL && dyn_i->h->def_dynamic) 2499 { 2500 h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; 2501 elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += 2502 sizeof (Elf64_External_VMS_IMAGE_FIXUP); 2503 ia64_info->fixups_sec->size += 2504 sizeof (Elf64_External_VMS_IMAGE_FIXUP); 2505 } 2506 } 2507 2508 /* Take care of the normal data relocations. */ 2509 2510 for (rent = dyn_i->reloc_entries; rent; rent = rent->next) 2511 { 2512 int count = rent->count; 2513 2514 switch (rent->type) 2515 { 2516 case R_IA64_FPTR32LSB: 2517 case R_IA64_FPTR64LSB: 2518 /* Allocate one iff !want_fptr and not PIE, which by this point 2519 will be true only if we're actually allocating one statically 2520 in the main executable. Position independent executables 2521 need a relative reloc. */ 2522 if (dyn_i->want_fptr && !x->info->pie) 2523 continue; 2524 break; 2525 case R_IA64_PCREL32LSB: 2526 case R_IA64_PCREL64LSB: 2527 if (!dynamic_symbol) 2528 continue; 2529 break; 2530 case R_IA64_DIR32LSB: 2531 case R_IA64_DIR64LSB: 2532 if (!dynamic_symbol && !shared) 2533 continue; 2534 break; 2535 case R_IA64_IPLTLSB: 2536 if (!dynamic_symbol && !shared) 2537 continue; 2538 /* Use two REL relocations for IPLT relocations 2539 against local symbols. */ 2540 if (!dynamic_symbol) 2541 count *= 2; 2542 break; 2543 case R_IA64_DTPREL32LSB: 2544 case R_IA64_TPREL64LSB: 2545 case R_IA64_DTPREL64LSB: 2546 case R_IA64_DTPMOD64LSB: 2547 break; 2548 default: 2549 abort (); 2550 } 2551 2552 /* Add a fixup. */ 2553 if (!dynamic_symbol) 2554 abort (); 2555 2556 h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; 2557 elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += 2558 sizeof (Elf64_External_VMS_IMAGE_FIXUP); 2559 ia64_info->fixups_sec->size += 2560 sizeof (Elf64_External_VMS_IMAGE_FIXUP); 2561 } 2562 2563 return TRUE; 2564 } 2565 2566 static bfd_boolean 2567 elf64_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, 2568 struct elf_link_hash_entry *h) 2569 { 2570 /* ??? Undefined symbols with PLT entries should be re-defined 2571 to be the PLT entry. */ 2572 2573 /* If this is a weak symbol, and there is a real definition, the 2574 processor independent code will have arranged for us to see the 2575 real definition first, and we can just use the same value. */ 2576 if (h->u.weakdef != NULL) 2577 { 2578 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 2579 || h->u.weakdef->root.type == bfd_link_hash_defweak); 2580 h->root.u.def.section = h->u.weakdef->root.u.def.section; 2581 h->root.u.def.value = h->u.weakdef->root.u.def.value; 2582 return TRUE; 2583 } 2584 2585 /* If this is a reference to a symbol defined by a dynamic object which 2586 is not a function, we might allocate the symbol in our .dynbss section 2587 and allocate a COPY dynamic relocation. 2588 2589 But IA-64 code is canonically PIC, so as a rule we can avoid this sort 2590 of hackery. */ 2591 2592 return TRUE; 2593 } 2594 2595 static bfd_boolean 2596 elf64_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2597 struct bfd_link_info *info) 2598 { 2599 struct elf64_ia64_allocate_data data; 2600 struct elf64_ia64_link_hash_table *ia64_info; 2601 asection *sec; 2602 bfd *dynobj; 2603 struct elf_link_hash_table *hash_table; 2604 2605 hash_table = elf_hash_table (info); 2606 dynobj = hash_table->dynobj; 2607 ia64_info = elf64_ia64_hash_table (info); 2608 if (ia64_info == NULL) 2609 return FALSE; 2610 BFD_ASSERT(dynobj != NULL); 2611 data.info = info; 2612 2613 /* Allocate the GOT entries. */ 2614 2615 if (ia64_info->root.sgot) 2616 { 2617 data.ofs = 0; 2618 elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); 2619 elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); 2620 elf64_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); 2621 ia64_info->root.sgot->size = data.ofs; 2622 } 2623 2624 /* Allocate the FPTR entries. */ 2625 2626 if (ia64_info->fptr_sec) 2627 { 2628 data.ofs = 0; 2629 elf64_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); 2630 ia64_info->fptr_sec->size = data.ofs; 2631 } 2632 2633 /* Now that we've seen all of the input files, we can decide which 2634 symbols need plt entries. Allocate the minimal PLT entries first. 2635 We do this even though dynamic_sections_created may be FALSE, because 2636 this has the side-effect of clearing want_plt and want_plt2. */ 2637 2638 data.ofs = 0; 2639 elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); 2640 2641 /* Align the pointer for the plt2 entries. */ 2642 data.ofs = (data.ofs + 31) & (bfd_vma) -32; 2643 2644 elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); 2645 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) 2646 { 2647 /* FIXME: we always reserve the memory for dynamic linker even if 2648 there are no PLT entries since dynamic linker may assume the 2649 reserved memory always exists. */ 2650 2651 BFD_ASSERT (ia64_info->root.dynamic_sections_created); 2652 2653 ia64_info->root.splt->size = data.ofs; 2654 } 2655 2656 /* Allocate the PLTOFF entries. */ 2657 2658 if (ia64_info->pltoff_sec) 2659 { 2660 data.ofs = 0; 2661 elf64_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); 2662 ia64_info->pltoff_sec->size = data.ofs; 2663 } 2664 2665 if (ia64_info->root.dynamic_sections_created) 2666 { 2667 /* Allocate space for the dynamic relocations that turned out to be 2668 required. */ 2669 elf64_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); 2670 } 2671 2672 /* We have now determined the sizes of the various dynamic sections. 2673 Allocate memory for them. */ 2674 for (sec = dynobj->sections; sec != NULL; sec = sec->next) 2675 { 2676 bfd_boolean strip; 2677 2678 if (!(sec->flags & SEC_LINKER_CREATED)) 2679 continue; 2680 2681 /* If we don't need this section, strip it from the output file. 2682 There were several sections primarily related to dynamic 2683 linking that must be create before the linker maps input 2684 sections to output sections. The linker does that before 2685 bfd_elf_size_dynamic_sections is called, and it is that 2686 function which decides whether anything needs to go into 2687 these sections. */ 2688 2689 strip = (sec->size == 0); 2690 2691 if (sec == ia64_info->root.sgot) 2692 strip = FALSE; 2693 else if (sec == ia64_info->root.srelgot) 2694 { 2695 if (strip) 2696 ia64_info->root.srelgot = NULL; 2697 else 2698 /* We use the reloc_count field as a counter if we need to 2699 copy relocs into the output file. */ 2700 sec->reloc_count = 0; 2701 } 2702 else if (sec == ia64_info->fptr_sec) 2703 { 2704 if (strip) 2705 ia64_info->fptr_sec = NULL; 2706 } 2707 else if (sec == ia64_info->rel_fptr_sec) 2708 { 2709 if (strip) 2710 ia64_info->rel_fptr_sec = NULL; 2711 else 2712 /* We use the reloc_count field as a counter if we need to 2713 copy relocs into the output file. */ 2714 sec->reloc_count = 0; 2715 } 2716 else if (sec == ia64_info->root.splt) 2717 { 2718 if (strip) 2719 ia64_info->root.splt = NULL; 2720 } 2721 else if (sec == ia64_info->pltoff_sec) 2722 { 2723 if (strip) 2724 ia64_info->pltoff_sec = NULL; 2725 } 2726 else if (sec == ia64_info->fixups_sec) 2727 { 2728 if (strip) 2729 ia64_info->fixups_sec = NULL; 2730 } 2731 else if (sec == ia64_info->transfer_sec) 2732 { 2733 ; 2734 } 2735 else 2736 { 2737 const char *name; 2738 2739 /* It's OK to base decisions on the section name, because none 2740 of the dynobj section names depend upon the input files. */ 2741 name = bfd_get_section_name (dynobj, sec); 2742 2743 if (strcmp (name, ".got.plt") == 0) 2744 strip = FALSE; 2745 else if (CONST_STRNEQ (name, ".rel")) 2746 { 2747 if (!strip) 2748 { 2749 /* We use the reloc_count field as a counter if we need to 2750 copy relocs into the output file. */ 2751 sec->reloc_count = 0; 2752 } 2753 } 2754 else 2755 continue; 2756 } 2757 2758 if (strip) 2759 sec->flags |= SEC_EXCLUDE; 2760 else 2761 { 2762 /* Allocate memory for the section contents. */ 2763 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); 2764 if (sec->contents == NULL && sec->size != 0) 2765 return FALSE; 2766 } 2767 } 2768 2769 if (elf_hash_table (info)->dynamic_sections_created) 2770 { 2771 bfd *abfd; 2772 asection *dynsec; 2773 asection *dynstrsec; 2774 Elf_Internal_Dyn dyn; 2775 const struct elf_backend_data *bed; 2776 unsigned int shl_num = 0; 2777 bfd_vma fixups_off = 0; 2778 bfd_vma strdyn_off; 2779 unsigned int time_hi, time_lo; 2780 2781 /* The .dynamic section must exist and be empty. */ 2782 dynsec = bfd_get_linker_section (hash_table->dynobj, ".dynamic"); 2783 BFD_ASSERT (dynsec != NULL); 2784 BFD_ASSERT (dynsec->size == 0); 2785 2786 dynstrsec = bfd_get_linker_section (hash_table->dynobj, ".vmsdynstr"); 2787 BFD_ASSERT (dynstrsec != NULL); 2788 BFD_ASSERT (dynstrsec->size == 0); 2789 dynstrsec->size = 1; /* Initial blank. */ 2790 2791 /* Ident + link time. */ 2792 vms_get_time (&time_hi, &time_lo); 2793 2794 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_IDENT, 0)) 2795 return FALSE; 2796 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LINKTIME, 2797 (((bfd_uint64_t)time_hi) << 32) 2798 + time_lo)) 2799 return FALSE; 2800 2801 /* Strtab. */ 2802 strdyn_off = dynsec->size; 2803 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_STRTAB_OFFSET, 0)) 2804 return FALSE; 2805 if (!_bfd_elf_add_dynamic_entry (info, DT_STRSZ, 0)) 2806 return FALSE; 2807 2808 /* PLTGOT */ 2809 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_SEG, 0)) 2810 return FALSE; 2811 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_OFFSET, 0)) 2812 return FALSE; 2813 2814 /* Misc. */ 2815 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FPMODE, 0x9800000)) 2816 return FALSE; 2817 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LNKFLAGS, 2818 VMS_LF_IMGSTA | VMS_LF_MAIN)) 2819 return FALSE; 2820 2821 /* Add entries for shared libraries. */ 2822 for (abfd = info->input_bfds; abfd; abfd = abfd->link.next) 2823 { 2824 char *soname; 2825 size_t soname_len; 2826 bfd_size_type strindex; 2827 bfd_byte *newcontents; 2828 bfd_vma fixups_shl_off; 2829 2830 if (!(abfd->flags & DYNAMIC)) 2831 continue; 2832 BFD_ASSERT (abfd->xvec == output_bfd->xvec); 2833 2834 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_NEEDED_IDENT, 2835 elf_ia64_vms_ident (abfd))) 2836 return FALSE; 2837 2838 soname = vms_get_module_name (abfd->filename, TRUE); 2839 if (soname == NULL) 2840 return FALSE; 2841 strindex = dynstrsec->size; 2842 soname_len = strlen (soname) + 1; 2843 newcontents = (bfd_byte *) bfd_realloc (dynstrsec->contents, 2844 strindex + soname_len); 2845 if (newcontents == NULL) 2846 return FALSE; 2847 memcpy (newcontents + strindex, soname, soname_len); 2848 dynstrsec->size += soname_len; 2849 dynstrsec->contents = newcontents; 2850 2851 if (!_bfd_elf_add_dynamic_entry (info, DT_NEEDED, strindex)) 2852 return FALSE; 2853 2854 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_NEEDED, 2855 shl_num)) 2856 return FALSE; 2857 shl_num++; 2858 2859 /* The fixups_off was in fact containing the size of the fixup 2860 section. Remap into the offset. */ 2861 fixups_shl_off = elf_ia64_vms_tdata (abfd)->fixups_off; 2862 elf_ia64_vms_tdata (abfd)->fixups_off = fixups_off; 2863 2864 if (!_bfd_elf_add_dynamic_entry 2865 (info, DT_IA_64_VMS_FIXUP_RELA_CNT, 2866 fixups_shl_off / sizeof (Elf64_External_VMS_IMAGE_FIXUP))) 2867 return FALSE; 2868 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_RELA_OFF, 2869 fixups_off)) 2870 return FALSE; 2871 fixups_off += fixups_shl_off; 2872 } 2873 2874 /* Unwind. */ 2875 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWINDSZ, 0)) 2876 return FALSE; 2877 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_CODSEG, 0)) 2878 return FALSE; 2879 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_INFOSEG, 0)) 2880 return FALSE; 2881 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_OFFSET, 0)) 2882 return FALSE; 2883 if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_SEG, 0)) 2884 return FALSE; 2885 2886 if (!_bfd_elf_add_dynamic_entry (info, DT_NULL, 0xdead)) 2887 return FALSE; 2888 2889 /* Fix the strtab entries. */ 2890 bed = get_elf_backend_data (hash_table->dynobj); 2891 2892 if (dynstrsec->size > 1) 2893 dynstrsec->contents[0] = 0; 2894 else 2895 dynstrsec->size = 0; 2896 2897 /* Note: one 'spare' (ie DT_NULL) entry is added by 2898 bfd_elf_size_dynsym_hash_dynstr. */ 2899 dyn.d_tag = DT_IA_64_VMS_STRTAB_OFFSET; 2900 dyn.d_un.d_val = dynsec->size /* + sizeof (Elf64_External_Dyn) */; 2901 bed->s->swap_dyn_out (hash_table->dynobj, &dyn, 2902 dynsec->contents + strdyn_off); 2903 2904 dyn.d_tag = DT_STRSZ; 2905 dyn.d_un.d_val = dynstrsec->size; 2906 bed->s->swap_dyn_out (hash_table->dynobj, &dyn, 2907 dynsec->contents + strdyn_off + bed->s->sizeof_dyn); 2908 2909 elf_ia64_vms_tdata (output_bfd)->needed_count = shl_num; 2910 2911 /* Note section. */ 2912 if (!create_ia64_vms_notes (output_bfd, info, time_hi, time_lo)) 2913 return FALSE; 2914 } 2915 2916 /* ??? Perhaps force __gp local. */ 2917 2918 return TRUE; 2919 } 2920 2921 static void 2922 elf64_ia64_install_fixup (bfd *output_bfd, 2923 struct elf64_ia64_link_hash_table *ia64_info, 2924 struct elf_link_hash_entry *h, 2925 unsigned int type, asection *sec, bfd_vma offset, 2926 bfd_vma addend) 2927 { 2928 asection *relsec; 2929 Elf64_External_VMS_IMAGE_FIXUP *fixup; 2930 struct elf64_ia64_link_hash_entry *h_ia64; 2931 bfd_vma fixoff; 2932 Elf_Internal_Phdr *phdr; 2933 2934 if (h == NULL || !h->def_dynamic) 2935 abort (); 2936 2937 h_ia64 = (struct elf64_ia64_link_hash_entry *) h; 2938 fixoff = elf_ia64_vms_tdata (h_ia64->shl)->fixups_off; 2939 elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += 2940 sizeof (Elf64_External_VMS_IMAGE_FIXUP); 2941 relsec = ia64_info->fixups_sec; 2942 2943 fixup = (Elf64_External_VMS_IMAGE_FIXUP *)(relsec->contents + fixoff); 2944 offset += sec->output_section->vma + sec->output_offset; 2945 2946 /* FIXME: this is slow. We should cache the last one used, or create a 2947 map. */ 2948 phdr = _bfd_elf_find_segment_containing_section 2949 (output_bfd, sec->output_section); 2950 BFD_ASSERT (phdr != NULL); 2951 2952 bfd_putl64 (offset - phdr->p_vaddr, fixup->fixup_offset); 2953 bfd_putl32 (type, fixup->type); 2954 bfd_putl32 (phdr - elf_tdata (output_bfd)->phdr, fixup->fixup_seg); 2955 bfd_putl64 (addend, fixup->addend); 2956 bfd_putl32 (h->root.u.def.value, fixup->symvec_index); 2957 bfd_putl32 (2, fixup->data_type); 2958 } 2959 2960 /* Store an entry for target address TARGET_ADDR in the linkage table 2961 and return the gp-relative address of the linkage table entry. */ 2962 2963 static bfd_vma 2964 set_got_entry (bfd *abfd, struct bfd_link_info *info, 2965 struct elf64_ia64_dyn_sym_info *dyn_i, 2966 bfd_vma addend, bfd_vma value, unsigned int dyn_r_type) 2967 { 2968 struct elf64_ia64_link_hash_table *ia64_info; 2969 asection *got_sec; 2970 bfd_boolean done; 2971 bfd_vma got_offset; 2972 2973 ia64_info = elf64_ia64_hash_table (info); 2974 if (ia64_info == NULL) 2975 return 0; 2976 2977 got_sec = ia64_info->root.sgot; 2978 2979 switch (dyn_r_type) 2980 { 2981 case R_IA64_TPREL64LSB: 2982 case R_IA64_DTPMOD64LSB: 2983 case R_IA64_DTPREL32LSB: 2984 case R_IA64_DTPREL64LSB: 2985 abort (); 2986 break; 2987 default: 2988 done = dyn_i->got_done; 2989 dyn_i->got_done = TRUE; 2990 got_offset = dyn_i->got_offset; 2991 break; 2992 } 2993 2994 BFD_ASSERT ((got_offset & 7) == 0); 2995 2996 if (! done) 2997 { 2998 /* Store the target address in the linkage table entry. */ 2999 bfd_put_64 (abfd, value, got_sec->contents + got_offset); 3000 3001 /* Install a dynamic relocation if needed. */ 3002 if (((info->shared 3003 && (!dyn_i->h 3004 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT 3005 || dyn_i->h->root.type != bfd_link_hash_undefweak)) 3006 || elf64_ia64_dynamic_symbol_p (dyn_i->h)) 3007 && (!dyn_i->want_ltoff_fptr 3008 || !info->pie 3009 || !dyn_i->h 3010 || dyn_i->h->root.type != bfd_link_hash_undefweak)) 3011 { 3012 if (!dyn_i->h || !dyn_i->h->def_dynamic) 3013 { 3014 dyn_r_type = R_IA64_REL64LSB; 3015 addend = value; 3016 } 3017 3018 /* VMS: install a FIX32 or FIX64. */ 3019 switch (dyn_r_type) 3020 { 3021 case R_IA64_DIR32LSB: 3022 case R_IA64_FPTR32LSB: 3023 dyn_r_type = R_IA64_VMS_FIX32; 3024 break; 3025 case R_IA64_DIR64LSB: 3026 case R_IA64_FPTR64LSB: 3027 dyn_r_type = R_IA64_VMS_FIX64; 3028 break; 3029 default: 3030 BFD_ASSERT (FALSE); 3031 break; 3032 } 3033 elf64_ia64_install_fixup 3034 (info->output_bfd, ia64_info, dyn_i->h, 3035 dyn_r_type, got_sec, got_offset, addend); 3036 } 3037 } 3038 3039 /* Return the address of the linkage table entry. */ 3040 value = (got_sec->output_section->vma 3041 + got_sec->output_offset 3042 + got_offset); 3043 3044 return value; 3045 } 3046 3047 /* Fill in a function descriptor consisting of the function's code 3048 address and its global pointer. Return the descriptor's address. */ 3049 3050 static bfd_vma 3051 set_fptr_entry (bfd *abfd, struct bfd_link_info *info, 3052 struct elf64_ia64_dyn_sym_info *dyn_i, 3053 bfd_vma value) 3054 { 3055 struct elf64_ia64_link_hash_table *ia64_info; 3056 asection *fptr_sec; 3057 3058 ia64_info = elf64_ia64_hash_table (info); 3059 if (ia64_info == NULL) 3060 return 0; 3061 3062 fptr_sec = ia64_info->fptr_sec; 3063 3064 if (!dyn_i->fptr_done) 3065 { 3066 dyn_i->fptr_done = 1; 3067 3068 /* Fill in the function descriptor. */ 3069 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); 3070 bfd_put_64 (abfd, _bfd_get_gp_value (abfd), 3071 fptr_sec->contents + dyn_i->fptr_offset + 8); 3072 } 3073 3074 /* Return the descriptor's address. */ 3075 value = (fptr_sec->output_section->vma 3076 + fptr_sec->output_offset 3077 + dyn_i->fptr_offset); 3078 3079 return value; 3080 } 3081 3082 /* Fill in a PLTOFF entry consisting of the function's code address 3083 and its global pointer. Return the descriptor's address. */ 3084 3085 static bfd_vma 3086 set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, 3087 struct elf64_ia64_dyn_sym_info *dyn_i, 3088 bfd_vma value, bfd_boolean is_plt) 3089 { 3090 struct elf64_ia64_link_hash_table *ia64_info; 3091 asection *pltoff_sec; 3092 3093 ia64_info = elf64_ia64_hash_table (info); 3094 if (ia64_info == NULL) 3095 return 0; 3096 3097 pltoff_sec = ia64_info->pltoff_sec; 3098 3099 /* Don't do anything if this symbol uses a real PLT entry. In 3100 that case, we'll fill this in during finish_dynamic_symbol. */ 3101 if ((! dyn_i->want_plt || is_plt) 3102 && !dyn_i->pltoff_done) 3103 { 3104 bfd_vma gp = _bfd_get_gp_value (abfd); 3105 3106 /* Fill in the function descriptor. */ 3107 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); 3108 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); 3109 3110 /* Install dynamic relocations if needed. */ 3111 if (!is_plt 3112 && info->shared 3113 && (!dyn_i->h 3114 || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT 3115 || dyn_i->h->root.type != bfd_link_hash_undefweak)) 3116 { 3117 /* VMS: */ 3118 abort (); 3119 } 3120 3121 dyn_i->pltoff_done = 1; 3122 } 3123 3124 /* Return the descriptor's address. */ 3125 value = (pltoff_sec->output_section->vma 3126 + pltoff_sec->output_offset 3127 + dyn_i->pltoff_offset); 3128 3129 return value; 3130 } 3131 3132 /* Called through qsort to sort the .IA_64.unwind section during a 3133 non-relocatable link. Set elf64_ia64_unwind_entry_compare_bfd 3134 to the output bfd so we can do proper endianness frobbing. */ 3135 3136 static bfd *elf64_ia64_unwind_entry_compare_bfd; 3137 3138 static int 3139 elf64_ia64_unwind_entry_compare (const void * a, const void * b) 3140 { 3141 bfd_vma av, bv; 3142 3143 av = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, a); 3144 bv = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, b); 3145 3146 return (av < bv ? -1 : av > bv ? 1 : 0); 3147 } 3148 3149 /* Make sure we've got ourselves a nice fat __gp value. */ 3150 static bfd_boolean 3151 elf64_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) 3152 { 3153 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; 3154 bfd_vma min_short_vma = min_vma, max_short_vma = 0; 3155 struct elf_link_hash_entry *gp; 3156 bfd_vma gp_val; 3157 asection *os; 3158 struct elf64_ia64_link_hash_table *ia64_info; 3159 3160 ia64_info = elf64_ia64_hash_table (info); 3161 if (ia64_info == NULL) 3162 return FALSE; 3163 3164 /* Find the min and max vma of all sections marked short. Also collect 3165 min and max vma of any type, for use in selecting a nice gp. */ 3166 for (os = abfd->sections; os ; os = os->next) 3167 { 3168 bfd_vma lo, hi; 3169 3170 if ((os->flags & SEC_ALLOC) == 0) 3171 continue; 3172 3173 lo = os->vma; 3174 /* When this function is called from elfNN_ia64_final_link 3175 the correct value to use is os->size. When called from 3176 elfNN_ia64_relax_section we are in the middle of section 3177 sizing; some sections will already have os->size set, others 3178 will have os->size zero and os->rawsize the previous size. */ 3179 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); 3180 if (hi < lo) 3181 hi = (bfd_vma) -1; 3182 3183 if (min_vma > lo) 3184 min_vma = lo; 3185 if (max_vma < hi) 3186 max_vma = hi; 3187 if (os->flags & SEC_SMALL_DATA) 3188 { 3189 if (min_short_vma > lo) 3190 min_short_vma = lo; 3191 if (max_short_vma < hi) 3192 max_short_vma = hi; 3193 } 3194 } 3195 3196 if (ia64_info->min_short_sec) 3197 { 3198 if (min_short_vma 3199 > (ia64_info->min_short_sec->vma 3200 + ia64_info->min_short_offset)) 3201 min_short_vma = (ia64_info->min_short_sec->vma 3202 + ia64_info->min_short_offset); 3203 if (max_short_vma 3204 < (ia64_info->max_short_sec->vma 3205 + ia64_info->max_short_offset)) 3206 max_short_vma = (ia64_info->max_short_sec->vma 3207 + ia64_info->max_short_offset); 3208 } 3209 3210 /* See if the user wants to force a value. */ 3211 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, 3212 FALSE, FALSE); 3213 3214 if (gp 3215 && (gp->root.type == bfd_link_hash_defined 3216 || gp->root.type == bfd_link_hash_defweak)) 3217 { 3218 asection *gp_sec = gp->root.u.def.section; 3219 gp_val = (gp->root.u.def.value 3220 + gp_sec->output_section->vma 3221 + gp_sec->output_offset); 3222 } 3223 else 3224 { 3225 /* Pick a sensible value. */ 3226 3227 if (ia64_info->min_short_sec) 3228 { 3229 bfd_vma short_range = max_short_vma - min_short_vma; 3230 3231 /* If min_short_sec is set, pick one in the middle bewteen 3232 min_short_vma and max_short_vma. */ 3233 if (short_range >= 0x400000) 3234 goto overflow; 3235 gp_val = min_short_vma + short_range / 2; 3236 } 3237 else 3238 { 3239 asection *got_sec = ia64_info->root.sgot; 3240 3241 /* Start with just the address of the .got. */ 3242 if (got_sec) 3243 gp_val = got_sec->output_section->vma; 3244 else if (max_short_vma != 0) 3245 gp_val = min_short_vma; 3246 else if (max_vma - min_vma < 0x200000) 3247 gp_val = min_vma; 3248 else 3249 gp_val = max_vma - 0x200000 + 8; 3250 } 3251 3252 /* If it is possible to address the entire image, but we 3253 don't with the choice above, adjust. */ 3254 if (max_vma - min_vma < 0x400000 3255 && (max_vma - gp_val >= 0x200000 3256 || gp_val - min_vma > 0x200000)) 3257 gp_val = min_vma + 0x200000; 3258 else if (max_short_vma != 0) 3259 { 3260 /* If we don't cover all the short data, adjust. */ 3261 if (max_short_vma - gp_val >= 0x200000) 3262 gp_val = min_short_vma + 0x200000; 3263 3264 /* If we're addressing stuff past the end, adjust back. */ 3265 if (gp_val > max_vma) 3266 gp_val = max_vma - 0x200000 + 8; 3267 } 3268 } 3269 3270 /* Validate whether all SHF_IA_64_SHORT sections are within 3271 range of the chosen GP. */ 3272 3273 if (max_short_vma != 0) 3274 { 3275 if (max_short_vma - min_short_vma >= 0x400000) 3276 { 3277 overflow: 3278 (*_bfd_error_handler) 3279 (_("%s: short data segment overflowed (0x%lx >= 0x400000)"), 3280 bfd_get_filename (abfd), 3281 (unsigned long) (max_short_vma - min_short_vma)); 3282 return FALSE; 3283 } 3284 else if ((gp_val > min_short_vma 3285 && gp_val - min_short_vma > 0x200000) 3286 || (gp_val < max_short_vma 3287 && max_short_vma - gp_val >= 0x200000)) 3288 { 3289 (*_bfd_error_handler) 3290 (_("%s: __gp does not cover short data segment"), 3291 bfd_get_filename (abfd)); 3292 return FALSE; 3293 } 3294 } 3295 3296 _bfd_set_gp_value (abfd, gp_val); 3297 3298 return TRUE; 3299 } 3300 3301 static bfd_boolean 3302 elf64_ia64_final_link (bfd *abfd, struct bfd_link_info *info) 3303 { 3304 struct elf64_ia64_link_hash_table *ia64_info; 3305 asection *unwind_output_sec; 3306 3307 ia64_info = elf64_ia64_hash_table (info); 3308 if (ia64_info == NULL) 3309 return FALSE; 3310 3311 /* Make sure we've got ourselves a nice fat __gp value. */ 3312 if (!info->relocatable) 3313 { 3314 bfd_vma gp_val; 3315 struct elf_link_hash_entry *gp; 3316 3317 /* We assume after gp is set, section size will only decrease. We 3318 need to adjust gp for it. */ 3319 _bfd_set_gp_value (abfd, 0); 3320 if (! elf64_ia64_choose_gp (abfd, info, TRUE)) 3321 return FALSE; 3322 gp_val = _bfd_get_gp_value (abfd); 3323 3324 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, 3325 FALSE, FALSE); 3326 if (gp) 3327 { 3328 gp->root.type = bfd_link_hash_defined; 3329 gp->root.u.def.value = gp_val; 3330 gp->root.u.def.section = bfd_abs_section_ptr; 3331 } 3332 } 3333 3334 /* If we're producing a final executable, we need to sort the contents 3335 of the .IA_64.unwind section. Force this section to be relocated 3336 into memory rather than written immediately to the output file. */ 3337 unwind_output_sec = NULL; 3338 if (!info->relocatable) 3339 { 3340 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); 3341 if (s) 3342 { 3343 unwind_output_sec = s->output_section; 3344 unwind_output_sec->contents 3345 = bfd_malloc (unwind_output_sec->size); 3346 if (unwind_output_sec->contents == NULL) 3347 return FALSE; 3348 } 3349 } 3350 3351 /* Invoke the regular ELF backend linker to do all the work. */ 3352 if (!bfd_elf_final_link (abfd, info)) 3353 return FALSE; 3354 3355 if (unwind_output_sec) 3356 { 3357 elf64_ia64_unwind_entry_compare_bfd = abfd; 3358 qsort (unwind_output_sec->contents, 3359 (size_t) (unwind_output_sec->size / 24), 3360 24, 3361 elf64_ia64_unwind_entry_compare); 3362 3363 if (! bfd_set_section_contents (abfd, unwind_output_sec, 3364 unwind_output_sec->contents, (bfd_vma) 0, 3365 unwind_output_sec->size)) 3366 return FALSE; 3367 } 3368 3369 return TRUE; 3370 } 3371 3372 static bfd_boolean 3373 elf64_ia64_relocate_section (bfd *output_bfd, 3374 struct bfd_link_info *info, 3375 bfd *input_bfd, 3376 asection *input_section, 3377 bfd_byte *contents, 3378 Elf_Internal_Rela *relocs, 3379 Elf_Internal_Sym *local_syms, 3380 asection **local_sections) 3381 { 3382 struct elf64_ia64_link_hash_table *ia64_info; 3383 Elf_Internal_Shdr *symtab_hdr; 3384 Elf_Internal_Rela *rel; 3385 Elf_Internal_Rela *relend; 3386 bfd_boolean ret_val = TRUE; /* for non-fatal errors */ 3387 bfd_vma gp_val; 3388 3389 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 3390 ia64_info = elf64_ia64_hash_table (info); 3391 if (ia64_info == NULL) 3392 return FALSE; 3393 3394 /* Infect various flags from the input section to the output section. */ 3395 if (info->relocatable) 3396 { 3397 bfd_vma flags; 3398 3399 flags = elf_section_data(input_section)->this_hdr.sh_flags; 3400 flags &= SHF_IA_64_NORECOV; 3401 3402 elf_section_data(input_section->output_section) 3403 ->this_hdr.sh_flags |= flags; 3404 } 3405 3406 gp_val = _bfd_get_gp_value (output_bfd); 3407 3408 rel = relocs; 3409 relend = relocs + input_section->reloc_count; 3410 for (; rel < relend; ++rel) 3411 { 3412 struct elf_link_hash_entry *h; 3413 struct elf64_ia64_dyn_sym_info *dyn_i; 3414 bfd_reloc_status_type r; 3415 reloc_howto_type *howto; 3416 unsigned long r_symndx; 3417 Elf_Internal_Sym *sym; 3418 unsigned int r_type; 3419 bfd_vma value; 3420 asection *sym_sec; 3421 bfd_byte *hit_addr; 3422 bfd_boolean dynamic_symbol_p; 3423 bfd_boolean undef_weak_ref; 3424 3425 r_type = ELF64_R_TYPE (rel->r_info); 3426 if (r_type > R_IA64_MAX_RELOC_CODE) 3427 { 3428 (*_bfd_error_handler) 3429 (_("%B: unknown relocation type %d"), 3430 input_bfd, (int) r_type); 3431 bfd_set_error (bfd_error_bad_value); 3432 ret_val = FALSE; 3433 continue; 3434 } 3435 3436 howto = ia64_elf_lookup_howto (r_type); 3437 r_symndx = ELF64_R_SYM (rel->r_info); 3438 h = NULL; 3439 sym = NULL; 3440 sym_sec = NULL; 3441 undef_weak_ref = FALSE; 3442 3443 if (r_symndx < symtab_hdr->sh_info) 3444 { 3445 /* Reloc against local symbol. */ 3446 asection *msec; 3447 sym = local_syms + r_symndx; 3448 sym_sec = local_sections[r_symndx]; 3449 msec = sym_sec; 3450 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); 3451 if (!info->relocatable 3452 && (sym_sec->flags & SEC_MERGE) != 0 3453 && ELF_ST_TYPE (sym->st_info) == STT_SECTION 3454 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) 3455 { 3456 struct elf64_ia64_local_hash_entry *loc_h; 3457 3458 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); 3459 if (loc_h && ! loc_h->sec_merge_done) 3460 { 3461 struct elf64_ia64_dyn_sym_info *dynent; 3462 unsigned int count; 3463 3464 for (count = loc_h->count, dynent = loc_h->info; 3465 count != 0; 3466 count--, dynent++) 3467 { 3468 msec = sym_sec; 3469 dynent->addend = 3470 _bfd_merged_section_offset (output_bfd, &msec, 3471 elf_section_data (msec)-> 3472 sec_info, 3473 sym->st_value 3474 + dynent->addend); 3475 dynent->addend -= sym->st_value; 3476 dynent->addend += msec->output_section->vma 3477 + msec->output_offset 3478 - sym_sec->output_section->vma 3479 - sym_sec->output_offset; 3480 } 3481 3482 /* We may have introduced duplicated entries. We need 3483 to remove them properly. */ 3484 count = sort_dyn_sym_info (loc_h->info, loc_h->count); 3485 if (count != loc_h->count) 3486 { 3487 loc_h->count = count; 3488 loc_h->sorted_count = count; 3489 } 3490 3491 loc_h->sec_merge_done = 1; 3492 } 3493 } 3494 } 3495 else 3496 { 3497 bfd_boolean unresolved_reloc; 3498 bfd_boolean warned, ignored; 3499 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 3500 3501 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3502 r_symndx, symtab_hdr, sym_hashes, 3503 h, sym_sec, value, 3504 unresolved_reloc, warned, ignored); 3505 3506 if (h->root.type == bfd_link_hash_undefweak) 3507 undef_weak_ref = TRUE; 3508 else if (warned) 3509 continue; 3510 } 3511 3512 /* For relocs against symbols from removed linkonce sections, 3513 or sections discarded by a linker script, we just want the 3514 section contents zeroed. Avoid any special processing. */ 3515 if (sym_sec != NULL && discarded_section (sym_sec)) 3516 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3517 rel, 1, relend, howto, 0, contents); 3518 3519 if (info->relocatable) 3520 continue; 3521 3522 hit_addr = contents + rel->r_offset; 3523 value += rel->r_addend; 3524 dynamic_symbol_p = elf64_ia64_dynamic_symbol_p (h); 3525 3526 switch (r_type) 3527 { 3528 case R_IA64_NONE: 3529 case R_IA64_LDXMOV: 3530 continue; 3531 3532 case R_IA64_IMM14: 3533 case R_IA64_IMM22: 3534 case R_IA64_IMM64: 3535 case R_IA64_DIR32MSB: 3536 case R_IA64_DIR32LSB: 3537 case R_IA64_DIR64MSB: 3538 case R_IA64_DIR64LSB: 3539 /* Install a dynamic relocation for this reloc. */ 3540 if ((dynamic_symbol_p || info->shared) 3541 && r_symndx != 0 3542 && (input_section->flags & SEC_ALLOC) != 0) 3543 { 3544 unsigned int dyn_r_type; 3545 bfd_vma addend; 3546 3547 switch (r_type) 3548 { 3549 case R_IA64_IMM14: 3550 case R_IA64_IMM22: 3551 case R_IA64_IMM64: 3552 /* ??? People shouldn't be doing non-pic code in 3553 shared libraries nor dynamic executables. */ 3554 (*_bfd_error_handler) 3555 (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"), 3556 input_bfd, 3557 h ? h->root.root.string 3558 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 3559 sym_sec)); 3560 ret_val = FALSE; 3561 continue; 3562 3563 default: 3564 break; 3565 } 3566 3567 /* If we don't need dynamic symbol lookup, find a 3568 matching RELATIVE relocation. */ 3569 dyn_r_type = r_type; 3570 if (dynamic_symbol_p) 3571 { 3572 addend = rel->r_addend; 3573 value = 0; 3574 } 3575 else 3576 { 3577 addend = value; 3578 } 3579 3580 /* VMS: install a FIX64. */ 3581 switch (dyn_r_type) 3582 { 3583 case R_IA64_DIR32LSB: 3584 dyn_r_type = R_IA64_VMS_FIX32; 3585 break; 3586 case R_IA64_DIR64LSB: 3587 dyn_r_type = R_IA64_VMS_FIX64; 3588 break; 3589 default: 3590 BFD_ASSERT (FALSE); 3591 break; 3592 } 3593 elf64_ia64_install_fixup 3594 (output_bfd, ia64_info, h, 3595 dyn_r_type, input_section, rel->r_offset, addend); 3596 r = bfd_reloc_ok; 3597 break; 3598 } 3599 /* Fall through. */ 3600 3601 case R_IA64_LTV32MSB: 3602 case R_IA64_LTV32LSB: 3603 case R_IA64_LTV64MSB: 3604 case R_IA64_LTV64LSB: 3605 r = ia64_elf_install_value (hit_addr, value, r_type); 3606 break; 3607 3608 case R_IA64_GPREL22: 3609 case R_IA64_GPREL64I: 3610 case R_IA64_GPREL32MSB: 3611 case R_IA64_GPREL32LSB: 3612 case R_IA64_GPREL64MSB: 3613 case R_IA64_GPREL64LSB: 3614 if (dynamic_symbol_p) 3615 { 3616 (*_bfd_error_handler) 3617 (_("%B: @gprel relocation against dynamic symbol %s"), 3618 input_bfd, 3619 h ? h->root.root.string 3620 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 3621 sym_sec)); 3622 ret_val = FALSE; 3623 continue; 3624 } 3625 value -= gp_val; 3626 r = ia64_elf_install_value (hit_addr, value, r_type); 3627 break; 3628 3629 case R_IA64_LTOFF22: 3630 case R_IA64_LTOFF22X: 3631 case R_IA64_LTOFF64I: 3632 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 3633 value = set_got_entry (input_bfd, info, dyn_i, 3634 rel->r_addend, value, R_IA64_DIR64LSB); 3635 value -= gp_val; 3636 r = ia64_elf_install_value (hit_addr, value, r_type); 3637 break; 3638 3639 case R_IA64_PLTOFF22: 3640 case R_IA64_PLTOFF64I: 3641 case R_IA64_PLTOFF64MSB: 3642 case R_IA64_PLTOFF64LSB: 3643 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 3644 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); 3645 value -= gp_val; 3646 r = ia64_elf_install_value (hit_addr, value, r_type); 3647 break; 3648 3649 case R_IA64_FPTR64I: 3650 case R_IA64_FPTR32MSB: 3651 case R_IA64_FPTR32LSB: 3652 case R_IA64_FPTR64MSB: 3653 case R_IA64_FPTR64LSB: 3654 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 3655 if (dyn_i->want_fptr) 3656 { 3657 if (!undef_weak_ref) 3658 value = set_fptr_entry (output_bfd, info, dyn_i, value); 3659 } 3660 if (!dyn_i->want_fptr || info->pie) 3661 { 3662 /* Otherwise, we expect the dynamic linker to create 3663 the entry. */ 3664 3665 if (dyn_i->want_fptr) 3666 { 3667 if (r_type == R_IA64_FPTR64I) 3668 { 3669 /* We can't represent this without a dynamic symbol. 3670 Adjust the relocation to be against an output 3671 section symbol, which are always present in the 3672 dynamic symbol table. */ 3673 /* ??? People shouldn't be doing non-pic code in 3674 shared libraries. Hork. */ 3675 (*_bfd_error_handler) 3676 (_("%B: linking non-pic code in a position independent executable"), 3677 input_bfd); 3678 ret_val = FALSE; 3679 continue; 3680 } 3681 } 3682 else 3683 { 3684 value = 0; 3685 } 3686 3687 /* VMS: FIXFD. */ 3688 elf64_ia64_install_fixup 3689 (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, 3690 input_section, rel->r_offset, 0); 3691 r = bfd_reloc_ok; 3692 break; 3693 } 3694 3695 r = ia64_elf_install_value (hit_addr, value, r_type); 3696 break; 3697 3698 case R_IA64_LTOFF_FPTR22: 3699 case R_IA64_LTOFF_FPTR64I: 3700 case R_IA64_LTOFF_FPTR32MSB: 3701 case R_IA64_LTOFF_FPTR32LSB: 3702 case R_IA64_LTOFF_FPTR64MSB: 3703 case R_IA64_LTOFF_FPTR64LSB: 3704 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 3705 if (dyn_i->want_fptr) 3706 { 3707 BFD_ASSERT (h == NULL || !h->def_dynamic); 3708 if (!undef_weak_ref) 3709 value = set_fptr_entry (output_bfd, info, dyn_i, value); 3710 } 3711 else 3712 value = 0; 3713 3714 value = set_got_entry (output_bfd, info, dyn_i, 3715 rel->r_addend, value, R_IA64_FPTR64LSB); 3716 value -= gp_val; 3717 r = ia64_elf_install_value (hit_addr, value, r_type); 3718 break; 3719 3720 case R_IA64_PCREL32MSB: 3721 case R_IA64_PCREL32LSB: 3722 case R_IA64_PCREL64MSB: 3723 case R_IA64_PCREL64LSB: 3724 /* Install a dynamic relocation for this reloc. */ 3725 if (dynamic_symbol_p && r_symndx != 0) 3726 { 3727 /* VMS: doesn't exist ??? */ 3728 abort (); 3729 } 3730 goto finish_pcrel; 3731 3732 case R_IA64_PCREL21B: 3733 case R_IA64_PCREL60B: 3734 /* We should have created a PLT entry for any dynamic symbol. */ 3735 dyn_i = NULL; 3736 if (h) 3737 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); 3738 3739 if (dyn_i && dyn_i->want_plt2) 3740 { 3741 /* Should have caught this earlier. */ 3742 BFD_ASSERT (rel->r_addend == 0); 3743 3744 value = (ia64_info->root.splt->output_section->vma 3745 + ia64_info->root.splt->output_offset 3746 + dyn_i->plt2_offset); 3747 } 3748 else 3749 { 3750 /* Since there's no PLT entry, Validate that this is 3751 locally defined. */ 3752 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); 3753 3754 /* If the symbol is undef_weak, we shouldn't be trying 3755 to call it. There's every chance that we'd wind up 3756 with an out-of-range fixup here. Don't bother setting 3757 any value at all. */ 3758 if (undef_weak_ref) 3759 continue; 3760 } 3761 goto finish_pcrel; 3762 3763 case R_IA64_PCREL21BI: 3764 case R_IA64_PCREL21F: 3765 case R_IA64_PCREL21M: 3766 case R_IA64_PCREL22: 3767 case R_IA64_PCREL64I: 3768 /* The PCREL21BI reloc is specifically not intended for use with 3769 dynamic relocs. PCREL21F and PCREL21M are used for speculation 3770 fixup code, and thus probably ought not be dynamic. The 3771 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ 3772 if (dynamic_symbol_p) 3773 { 3774 const char *msg; 3775 3776 if (r_type == R_IA64_PCREL21BI) 3777 msg = _("%B: @internal branch to dynamic symbol %s"); 3778 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) 3779 msg = _("%B: speculation fixup to dynamic symbol %s"); 3780 else 3781 msg = _("%B: @pcrel relocation against dynamic symbol %s"); 3782 (*_bfd_error_handler) (msg, input_bfd, 3783 h ? h->root.root.string 3784 : bfd_elf_sym_name (input_bfd, 3785 symtab_hdr, 3786 sym, 3787 sym_sec)); 3788 ret_val = FALSE; 3789 continue; 3790 } 3791 goto finish_pcrel; 3792 3793 finish_pcrel: 3794 /* Make pc-relative. */ 3795 value -= (input_section->output_section->vma 3796 + input_section->output_offset 3797 + rel->r_offset) & ~ (bfd_vma) 0x3; 3798 r = ia64_elf_install_value (hit_addr, value, r_type); 3799 break; 3800 3801 case R_IA64_SEGREL32MSB: 3802 case R_IA64_SEGREL32LSB: 3803 case R_IA64_SEGREL64MSB: 3804 case R_IA64_SEGREL64LSB: 3805 { 3806 /* Find the segment that contains the output_section. */ 3807 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section 3808 (output_bfd, sym_sec->output_section); 3809 3810 if (p == NULL) 3811 { 3812 r = bfd_reloc_notsupported; 3813 } 3814 else 3815 { 3816 /* The VMA of the segment is the vaddr of the associated 3817 program header. */ 3818 if (value > p->p_vaddr) 3819 value -= p->p_vaddr; 3820 else 3821 value = 0; 3822 r = ia64_elf_install_value (hit_addr, value, r_type); 3823 } 3824 break; 3825 } 3826 3827 case R_IA64_SECREL32MSB: 3828 case R_IA64_SECREL32LSB: 3829 case R_IA64_SECREL64MSB: 3830 case R_IA64_SECREL64LSB: 3831 /* Make output-section relative to section where the symbol 3832 is defined. PR 475 */ 3833 if (sym_sec) 3834 value -= sym_sec->output_section->vma; 3835 r = ia64_elf_install_value (hit_addr, value, r_type); 3836 break; 3837 3838 case R_IA64_IPLTMSB: 3839 case R_IA64_IPLTLSB: 3840 /* Install a dynamic relocation for this reloc. */ 3841 if ((dynamic_symbol_p || info->shared) 3842 && (input_section->flags & SEC_ALLOC) != 0) 3843 { 3844 /* VMS: FIXFD ?? */ 3845 abort (); 3846 } 3847 3848 if (r_type == R_IA64_IPLTMSB) 3849 r_type = R_IA64_DIR64MSB; 3850 else 3851 r_type = R_IA64_DIR64LSB; 3852 ia64_elf_install_value (hit_addr, value, r_type); 3853 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); 3854 break; 3855 3856 case R_IA64_TPREL14: 3857 case R_IA64_TPREL22: 3858 case R_IA64_TPREL64I: 3859 r = bfd_reloc_notsupported; 3860 break; 3861 3862 case R_IA64_DTPREL14: 3863 case R_IA64_DTPREL22: 3864 case R_IA64_DTPREL64I: 3865 case R_IA64_DTPREL32LSB: 3866 case R_IA64_DTPREL32MSB: 3867 case R_IA64_DTPREL64LSB: 3868 case R_IA64_DTPREL64MSB: 3869 r = bfd_reloc_notsupported; 3870 break; 3871 3872 case R_IA64_LTOFF_TPREL22: 3873 case R_IA64_LTOFF_DTPMOD22: 3874 case R_IA64_LTOFF_DTPREL22: 3875 r = bfd_reloc_notsupported; 3876 break; 3877 3878 default: 3879 r = bfd_reloc_notsupported; 3880 break; 3881 } 3882 3883 switch (r) 3884 { 3885 case bfd_reloc_ok: 3886 break; 3887 3888 case bfd_reloc_undefined: 3889 /* This can happen for global table relative relocs if 3890 __gp is undefined. This is a panic situation so we 3891 don't try to continue. */ 3892 (*info->callbacks->undefined_symbol) 3893 (info, "__gp", input_bfd, input_section, rel->r_offset, 1); 3894 return FALSE; 3895 3896 case bfd_reloc_notsupported: 3897 { 3898 const char *name; 3899 3900 if (h) 3901 name = h->root.root.string; 3902 else 3903 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 3904 sym_sec); 3905 if (!(*info->callbacks->warning) (info, _("unsupported reloc"), 3906 name, input_bfd, 3907 input_section, rel->r_offset)) 3908 return FALSE; 3909 ret_val = FALSE; 3910 } 3911 break; 3912 3913 case bfd_reloc_dangerous: 3914 case bfd_reloc_outofrange: 3915 case bfd_reloc_overflow: 3916 default: 3917 { 3918 const char *name; 3919 3920 if (h) 3921 name = h->root.root.string; 3922 else 3923 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 3924 sym_sec); 3925 3926 switch (r_type) 3927 { 3928 case R_IA64_TPREL14: 3929 case R_IA64_TPREL22: 3930 case R_IA64_TPREL64I: 3931 case R_IA64_DTPREL14: 3932 case R_IA64_DTPREL22: 3933 case R_IA64_DTPREL64I: 3934 case R_IA64_DTPREL32LSB: 3935 case R_IA64_DTPREL32MSB: 3936 case R_IA64_DTPREL64LSB: 3937 case R_IA64_DTPREL64MSB: 3938 case R_IA64_LTOFF_TPREL22: 3939 case R_IA64_LTOFF_DTPMOD22: 3940 case R_IA64_LTOFF_DTPREL22: 3941 (*_bfd_error_handler) 3942 (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."), 3943 input_bfd, input_section, howto->name, name, 3944 rel->r_offset); 3945 break; 3946 3947 case R_IA64_PCREL21B: 3948 case R_IA64_PCREL21BI: 3949 case R_IA64_PCREL21M: 3950 case R_IA64_PCREL21F: 3951 if (is_elf_hash_table (info->hash)) 3952 { 3953 /* Relaxtion is always performed for ELF output. 3954 Overflow failures for those relocations mean 3955 that the section is too big to relax. */ 3956 (*_bfd_error_handler) 3957 (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."), 3958 input_bfd, input_section, howto->name, name, 3959 rel->r_offset, input_section->size); 3960 break; 3961 } 3962 default: 3963 if (!(*info->callbacks->reloc_overflow) (info, 3964 &h->root, 3965 name, 3966 howto->name, 3967 (bfd_vma) 0, 3968 input_bfd, 3969 input_section, 3970 rel->r_offset)) 3971 return FALSE; 3972 break; 3973 } 3974 3975 ret_val = FALSE; 3976 } 3977 break; 3978 } 3979 } 3980 3981 return ret_val; 3982 } 3983 3984 static bfd_boolean 3985 elf64_ia64_finish_dynamic_symbol (bfd *output_bfd, 3986 struct bfd_link_info *info, 3987 struct elf_link_hash_entry *h, 3988 Elf_Internal_Sym *sym) 3989 { 3990 struct elf64_ia64_link_hash_table *ia64_info; 3991 struct elf64_ia64_dyn_sym_info *dyn_i; 3992 3993 ia64_info = elf64_ia64_hash_table (info); 3994 if (ia64_info == NULL) 3995 return FALSE; 3996 3997 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); 3998 3999 /* Fill in the PLT data, if required. */ 4000 if (dyn_i && dyn_i->want_plt) 4001 { 4002 bfd_byte *loc; 4003 asection *plt_sec; 4004 bfd_vma plt_addr, pltoff_addr, gp_val; 4005 4006 gp_val = _bfd_get_gp_value (output_bfd); 4007 4008 plt_sec = ia64_info->root.splt; 4009 plt_addr = 0; /* Not used as overriden by FIXUPs. */ 4010 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); 4011 4012 /* Initialize the FULL PLT entry, if needed. */ 4013 if (dyn_i->want_plt2) 4014 { 4015 loc = plt_sec->contents + dyn_i->plt2_offset; 4016 4017 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); 4018 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); 4019 4020 /* Mark the symbol as undefined, rather than as defined in the 4021 plt section. Leave the value alone. */ 4022 /* ??? We didn't redefine it in adjust_dynamic_symbol in the 4023 first place. But perhaps elflink.c did some for us. */ 4024 if (!h->def_regular) 4025 sym->st_shndx = SHN_UNDEF; 4026 } 4027 4028 /* VMS: FIXFD. */ 4029 elf64_ia64_install_fixup 4030 (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, ia64_info->pltoff_sec, 4031 pltoff_addr - (ia64_info->pltoff_sec->output_section->vma 4032 + ia64_info->pltoff_sec->output_offset), 0); 4033 } 4034 4035 /* Mark some specially defined symbols as absolute. */ 4036 if (h == ia64_info->root.hdynamic 4037 || h == ia64_info->root.hgot 4038 || h == ia64_info->root.hplt) 4039 sym->st_shndx = SHN_ABS; 4040 4041 return TRUE; 4042 } 4043 4044 static bfd_boolean 4045 elf64_ia64_finish_dynamic_sections (bfd *abfd, 4046 struct bfd_link_info *info) 4047 { 4048 struct elf64_ia64_link_hash_table *ia64_info; 4049 bfd *dynobj; 4050 4051 ia64_info = elf64_ia64_hash_table (info); 4052 if (ia64_info == NULL) 4053 return FALSE; 4054 4055 dynobj = ia64_info->root.dynobj; 4056 4057 if (elf_hash_table (info)->dynamic_sections_created) 4058 { 4059 Elf64_External_Dyn *dyncon, *dynconend; 4060 asection *sdyn; 4061 asection *unwind_sec; 4062 bfd_vma gp_val; 4063 unsigned int gp_seg; 4064 bfd_vma gp_off; 4065 Elf_Internal_Phdr *phdr; 4066 Elf_Internal_Phdr *base_phdr; 4067 unsigned int unwind_seg = 0; 4068 unsigned int code_seg = 0; 4069 4070 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4071 BFD_ASSERT (sdyn != NULL); 4072 dyncon = (Elf64_External_Dyn *) sdyn->contents; 4073 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); 4074 4075 gp_val = _bfd_get_gp_value (abfd); 4076 phdr = _bfd_elf_find_segment_containing_section 4077 (info->output_bfd, ia64_info->pltoff_sec->output_section); 4078 BFD_ASSERT (phdr != NULL); 4079 base_phdr = elf_tdata (info->output_bfd)->phdr; 4080 gp_seg = phdr - base_phdr; 4081 gp_off = gp_val - phdr->p_vaddr; 4082 4083 unwind_sec = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); 4084 if (unwind_sec != NULL) 4085 { 4086 asection *code_sec; 4087 4088 phdr = _bfd_elf_find_segment_containing_section (abfd, unwind_sec); 4089 BFD_ASSERT (phdr != NULL); 4090 unwind_seg = phdr - base_phdr; 4091 4092 code_sec = bfd_get_section_by_name (abfd, "$CODE$"); 4093 phdr = _bfd_elf_find_segment_containing_section (abfd, code_sec); 4094 BFD_ASSERT (phdr != NULL); 4095 code_seg = phdr - base_phdr; 4096 } 4097 4098 for (; dyncon < dynconend; dyncon++) 4099 { 4100 Elf_Internal_Dyn dyn; 4101 4102 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); 4103 4104 switch (dyn.d_tag) 4105 { 4106 case DT_IA_64_VMS_FIXUP_RELA_OFF: 4107 dyn.d_un.d_val += 4108 (ia64_info->fixups_sec->output_section->vma 4109 + ia64_info->fixups_sec->output_offset) 4110 - (sdyn->output_section->vma + sdyn->output_offset); 4111 break; 4112 4113 case DT_IA_64_VMS_PLTGOT_OFFSET: 4114 dyn.d_un.d_val = gp_off; 4115 break; 4116 4117 case DT_IA_64_VMS_PLTGOT_SEG: 4118 dyn.d_un.d_val = gp_seg; 4119 break; 4120 4121 case DT_IA_64_VMS_UNWINDSZ: 4122 if (unwind_sec == NULL) 4123 { 4124 dyn.d_tag = DT_NULL; 4125 dyn.d_un.d_val = 0xdead; 4126 } 4127 else 4128 dyn.d_un.d_val = unwind_sec->size; 4129 break; 4130 4131 case DT_IA_64_VMS_UNWIND_CODSEG: 4132 dyn.d_un.d_val = code_seg; 4133 break; 4134 4135 case DT_IA_64_VMS_UNWIND_INFOSEG: 4136 case DT_IA_64_VMS_UNWIND_SEG: 4137 dyn.d_un.d_val = unwind_seg; 4138 break; 4139 4140 case DT_IA_64_VMS_UNWIND_OFFSET: 4141 break; 4142 4143 default: 4144 /* No need to rewrite the entry. */ 4145 continue; 4146 } 4147 4148 bfd_elf64_swap_dyn_out (abfd, &dyn, dyncon); 4149 } 4150 } 4151 4152 /* Handle transfer addresses. */ 4153 { 4154 asection *tfr_sec = ia64_info->transfer_sec; 4155 struct elf64_vms_transfer *tfr; 4156 struct elf_link_hash_entry *tfr3; 4157 4158 tfr = (struct elf64_vms_transfer *)tfr_sec->contents; 4159 bfd_putl32 (6 * 8, tfr->size); 4160 bfd_putl64 (tfr_sec->output_section->vma 4161 + tfr_sec->output_offset 4162 + 6 * 8, tfr->tfradr3); 4163 4164 tfr3 = elf_link_hash_lookup (elf_hash_table (info), "ELF$TFRADR", FALSE, 4165 FALSE, FALSE); 4166 4167 if (tfr3 4168 && (tfr3->root.type == bfd_link_hash_defined 4169 || tfr3->root.type == bfd_link_hash_defweak)) 4170 { 4171 asection *tfr3_sec = tfr3->root.u.def.section; 4172 bfd_vma tfr3_val; 4173 4174 tfr3_val = (tfr3->root.u.def.value 4175 + tfr3_sec->output_section->vma 4176 + tfr3_sec->output_offset); 4177 4178 bfd_putl64 (tfr3_val, tfr->tfr3_func); 4179 bfd_putl64 (_bfd_get_gp_value (info->output_bfd), tfr->tfr3_gp); 4180 } 4181 4182 /* FIXME: set linker flags, 4183 handle lib$initialize. */ 4184 } 4185 4186 return TRUE; 4187 } 4188 4189 /* ELF file flag handling: */ 4190 4191 /* Function to keep IA-64 specific file flags. */ 4192 static bfd_boolean 4193 elf64_ia64_set_private_flags (bfd *abfd, flagword flags) 4194 { 4195 BFD_ASSERT (!elf_flags_init (abfd) 4196 || elf_elfheader (abfd)->e_flags == flags); 4197 4198 elf_elfheader (abfd)->e_flags = flags; 4199 elf_flags_init (abfd) = TRUE; 4200 return TRUE; 4201 } 4202 4203 /* Merge backend specific data from an object file to the output 4204 object file when linking. */ 4205 static bfd_boolean 4206 elf64_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4207 { 4208 flagword out_flags; 4209 flagword in_flags; 4210 bfd_boolean ok = TRUE; 4211 4212 /* Don't even pretend to support mixed-format linking. */ 4213 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4214 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4215 return FALSE; 4216 4217 in_flags = elf_elfheader (ibfd)->e_flags; 4218 out_flags = elf_elfheader (obfd)->e_flags; 4219 4220 if (! elf_flags_init (obfd)) 4221 { 4222 elf_flags_init (obfd) = TRUE; 4223 elf_elfheader (obfd)->e_flags = in_flags; 4224 4225 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4226 && bfd_get_arch_info (obfd)->the_default) 4227 { 4228 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 4229 bfd_get_mach (ibfd)); 4230 } 4231 4232 return TRUE; 4233 } 4234 4235 /* Check flag compatibility. */ 4236 if (in_flags == out_flags) 4237 return TRUE; 4238 4239 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ 4240 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) 4241 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; 4242 4243 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) 4244 { 4245 (*_bfd_error_handler) 4246 (_("%B: linking trap-on-NULL-dereference with non-trapping files"), 4247 ibfd); 4248 4249 bfd_set_error (bfd_error_bad_value); 4250 ok = FALSE; 4251 } 4252 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) 4253 { 4254 (*_bfd_error_handler) 4255 (_("%B: linking big-endian files with little-endian files"), 4256 ibfd); 4257 4258 bfd_set_error (bfd_error_bad_value); 4259 ok = FALSE; 4260 } 4261 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) 4262 { 4263 (*_bfd_error_handler) 4264 (_("%B: linking 64-bit files with 32-bit files"), 4265 ibfd); 4266 4267 bfd_set_error (bfd_error_bad_value); 4268 ok = FALSE; 4269 } 4270 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) 4271 { 4272 (*_bfd_error_handler) 4273 (_("%B: linking constant-gp files with non-constant-gp files"), 4274 ibfd); 4275 4276 bfd_set_error (bfd_error_bad_value); 4277 ok = FALSE; 4278 } 4279 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) 4280 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) 4281 { 4282 (*_bfd_error_handler) 4283 (_("%B: linking auto-pic files with non-auto-pic files"), 4284 ibfd); 4285 4286 bfd_set_error (bfd_error_bad_value); 4287 ok = FALSE; 4288 } 4289 4290 return ok; 4291 } 4292 4293 static bfd_boolean 4294 elf64_ia64_print_private_bfd_data (bfd *abfd, void * ptr) 4295 { 4296 FILE *file = (FILE *) ptr; 4297 flagword flags = elf_elfheader (abfd)->e_flags; 4298 4299 BFD_ASSERT (abfd != NULL && ptr != NULL); 4300 4301 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", 4302 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", 4303 (flags & EF_IA_64_EXT) ? "EXT, " : "", 4304 (flags & EF_IA_64_BE) ? "BE, " : "LE, ", 4305 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", 4306 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", 4307 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", 4308 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", 4309 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); 4310 4311 _bfd_elf_print_private_bfd_data (abfd, ptr); 4312 return TRUE; 4313 } 4314 4315 static enum elf_reloc_type_class 4316 elf64_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4317 const asection *rel_sec ATTRIBUTE_UNUSED, 4318 const Elf_Internal_Rela *rela) 4319 { 4320 switch ((int) ELF64_R_TYPE (rela->r_info)) 4321 { 4322 case R_IA64_REL32MSB: 4323 case R_IA64_REL32LSB: 4324 case R_IA64_REL64MSB: 4325 case R_IA64_REL64LSB: 4326 return reloc_class_relative; 4327 case R_IA64_IPLTMSB: 4328 case R_IA64_IPLTLSB: 4329 return reloc_class_plt; 4330 case R_IA64_COPY: 4331 return reloc_class_copy; 4332 default: 4333 return reloc_class_normal; 4334 } 4335 } 4336 4337 static const struct bfd_elf_special_section elf64_ia64_special_sections[] = 4338 { 4339 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, 4340 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, 4341 { NULL, 0, 0, 0, 0 } 4342 }; 4343 4344 static bfd_boolean 4345 elf64_ia64_object_p (bfd *abfd) 4346 { 4347 asection *sec; 4348 asection *group, *unwi, *unw; 4349 flagword flags; 4350 const char *name; 4351 char *unwi_name, *unw_name; 4352 bfd_size_type amt; 4353 4354 if (abfd->flags & DYNAMIC) 4355 return TRUE; 4356 4357 /* Flags for fake group section. */ 4358 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE 4359 | SEC_EXCLUDE); 4360 4361 /* We add a fake section group for each .gnu.linkonce.t.* section, 4362 which isn't in a section group, and its unwind sections. */ 4363 for (sec = abfd->sections; sec != NULL; sec = sec->next) 4364 { 4365 if (elf_sec_group (sec) == NULL 4366 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) 4367 == (SEC_LINK_ONCE | SEC_CODE)) 4368 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) 4369 { 4370 name = sec->name + 16; 4371 4372 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); 4373 unwi_name = bfd_alloc (abfd, amt); 4374 if (!unwi_name) 4375 return FALSE; 4376 4377 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); 4378 unwi = bfd_get_section_by_name (abfd, unwi_name); 4379 4380 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); 4381 unw_name = bfd_alloc (abfd, amt); 4382 if (!unw_name) 4383 return FALSE; 4384 4385 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); 4386 unw = bfd_get_section_by_name (abfd, unw_name); 4387 4388 /* We need to create a fake group section for it and its 4389 unwind sections. */ 4390 group = bfd_make_section_anyway_with_flags (abfd, name, 4391 flags); 4392 if (group == NULL) 4393 return FALSE; 4394 4395 /* Move the fake group section to the beginning. */ 4396 bfd_section_list_remove (abfd, group); 4397 bfd_section_list_prepend (abfd, group); 4398 4399 elf_next_in_group (group) = sec; 4400 4401 elf_group_name (sec) = name; 4402 elf_next_in_group (sec) = sec; 4403 elf_sec_group (sec) = group; 4404 4405 if (unwi) 4406 { 4407 elf_group_name (unwi) = name; 4408 elf_next_in_group (unwi) = sec; 4409 elf_next_in_group (sec) = unwi; 4410 elf_sec_group (unwi) = group; 4411 } 4412 4413 if (unw) 4414 { 4415 elf_group_name (unw) = name; 4416 if (unwi) 4417 { 4418 elf_next_in_group (unw) = elf_next_in_group (unwi); 4419 elf_next_in_group (unwi) = unw; 4420 } 4421 else 4422 { 4423 elf_next_in_group (unw) = sec; 4424 elf_next_in_group (sec) = unw; 4425 } 4426 elf_sec_group (unw) = group; 4427 } 4428 4429 /* Fake SHT_GROUP section header. */ 4430 elf_section_data (group)->this_hdr.bfd_section = group; 4431 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; 4432 } 4433 } 4434 return TRUE; 4435 } 4436 4437 /* Handle an IA-64 specific section when reading an object file. This 4438 is called when bfd_section_from_shdr finds a section with an unknown 4439 type. */ 4440 4441 static bfd_boolean 4442 elf64_vms_section_from_shdr (bfd *abfd, 4443 Elf_Internal_Shdr *hdr, 4444 const char *name, 4445 int shindex) 4446 { 4447 flagword secflags = 0; 4448 4449 switch (hdr->sh_type) 4450 { 4451 case SHT_IA_64_VMS_TRACE: 4452 case SHT_IA_64_VMS_DEBUG: 4453 case SHT_IA_64_VMS_DEBUG_STR: 4454 secflags = SEC_DEBUGGING; 4455 break; 4456 4457 case SHT_IA_64_UNWIND: 4458 case SHT_IA_64_HP_OPT_ANOT: 4459 break; 4460 4461 case SHT_IA_64_EXT: 4462 if (strcmp (name, ELF_STRING_ia64_archext) != 0) 4463 return FALSE; 4464 break; 4465 4466 default: 4467 return FALSE; 4468 } 4469 4470 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) 4471 return FALSE; 4472 4473 if (secflags != 0) 4474 { 4475 asection *newsect = hdr->bfd_section; 4476 4477 if (! bfd_set_section_flags 4478 (abfd, newsect, bfd_get_section_flags (abfd, newsect) | secflags)) 4479 return FALSE; 4480 } 4481 4482 return TRUE; 4483 } 4484 4485 static bfd_boolean 4486 elf64_vms_object_p (bfd *abfd) 4487 { 4488 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); 4489 Elf_Internal_Phdr *i_phdr = elf_tdata (abfd)->phdr; 4490 unsigned int i; 4491 unsigned int num_text = 0; 4492 unsigned int num_data = 0; 4493 unsigned int num_rodata = 0; 4494 char name[16]; 4495 4496 if (!elf64_ia64_object_p (abfd)) 4497 return FALSE; 4498 4499 /* Many VMS compilers do not generate sections for the corresponding 4500 segment. This is boring as binutils tools won't be able to disassemble 4501 the code. So we simply create all the missing sections. */ 4502 for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) 4503 { 4504 /* Is there a section for this segment? */ 4505 bfd_vma base_vma = i_phdr->p_vaddr; 4506 bfd_vma limit_vma = base_vma + i_phdr->p_filesz; 4507 4508 if (i_phdr->p_type != PT_LOAD) 4509 continue; 4510 4511 /* We need to cover from base_vms to limit_vma. */ 4512 again: 4513 while (base_vma < limit_vma) 4514 { 4515 bfd_vma next_vma = limit_vma; 4516 asection *nsec; 4517 asection *sec; 4518 flagword flags; 4519 char *nname = NULL; 4520 4521 /* Find a section covering [base_vma;limit_vma) */ 4522 for (sec = abfd->sections; sec != NULL; sec = sec->next) 4523 { 4524 /* Skip uninteresting sections (either not in memory or 4525 below base_vma. */ 4526 if ((sec->flags & (SEC_ALLOC | SEC_LOAD)) == 0 4527 || sec->vma + sec->size <= base_vma) 4528 continue; 4529 if (sec->vma <= base_vma) 4530 { 4531 /* This section covers (maybe partially) the beginning 4532 of the range. */ 4533 base_vma = sec->vma + sec->size; 4534 goto again; 4535 } 4536 if (sec->vma < next_vma) 4537 { 4538 /* This section partially covers the end of the range. 4539 Used to compute the size of the hole. */ 4540 next_vma = sec->vma; 4541 } 4542 } 4543 4544 /* No section covering [base_vma; next_vma). Create a fake one. */ 4545 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; 4546 if (i_phdr->p_flags & PF_X) 4547 { 4548 flags |= SEC_CODE; 4549 if (num_text++ == 0) 4550 nname = ".text"; 4551 else 4552 sprintf (name, ".text$%u", num_text); 4553 } 4554 else if ((i_phdr->p_flags & (PF_R | PF_W)) == PF_R) 4555 { 4556 flags |= SEC_READONLY; 4557 sprintf (name, ".rodata$%u", num_rodata++); 4558 } 4559 else 4560 { 4561 flags |= SEC_DATA; 4562 sprintf (name, ".data$%u", num_data++); 4563 } 4564 4565 /* Allocate name. */ 4566 if (nname == NULL) 4567 { 4568 size_t name_len = strlen (name) + 1; 4569 nname = bfd_alloc (abfd, name_len); 4570 if (nname == NULL) 4571 return FALSE; 4572 memcpy (nname, name, name_len); 4573 } 4574 4575 /* Create and fill new section. */ 4576 nsec = bfd_make_section_anyway_with_flags (abfd, nname, flags); 4577 if (nsec == NULL) 4578 return FALSE; 4579 nsec->vma = base_vma; 4580 nsec->size = next_vma - base_vma; 4581 nsec->filepos = i_phdr->p_offset + (base_vma - i_phdr->p_vaddr); 4582 4583 base_vma = next_vma; 4584 } 4585 } 4586 return TRUE; 4587 } 4588 4589 static void 4590 elf64_vms_post_process_headers (bfd *abfd, 4591 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4592 { 4593 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); 4594 4595 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_OPENVMS; 4596 i_ehdrp->e_ident[EI_ABIVERSION] = 2; 4597 } 4598 4599 static bfd_boolean 4600 elf64_vms_section_processing (bfd *abfd ATTRIBUTE_UNUSED, 4601 Elf_Internal_Shdr *hdr) 4602 { 4603 if (hdr->bfd_section != NULL) 4604 { 4605 const char *name = bfd_get_section_name (abfd, hdr->bfd_section); 4606 4607 if (strcmp (name, ".text") == 0) 4608 hdr->sh_flags |= SHF_IA_64_VMS_SHARED; 4609 else if ((strcmp (name, ".debug") == 0) 4610 || (strcmp (name, ".debug_abbrev") == 0) 4611 || (strcmp (name, ".debug_aranges") == 0) 4612 || (strcmp (name, ".debug_frame") == 0) 4613 || (strcmp (name, ".debug_info") == 0) 4614 || (strcmp (name, ".debug_loc") == 0) 4615 || (strcmp (name, ".debug_macinfo") == 0) 4616 || (strcmp (name, ".debug_pubnames") == 0) 4617 || (strcmp (name, ".debug_pubtypes") == 0)) 4618 hdr->sh_type = SHT_IA_64_VMS_DEBUG; 4619 else if ((strcmp (name, ".debug_line") == 0) 4620 || (strcmp (name, ".debug_ranges") == 0) 4621 || (strcmp (name, ".trace_info") == 0) 4622 || (strcmp (name, ".trace_abbrev") == 0) 4623 || (strcmp (name, ".trace_aranges") == 0)) 4624 hdr->sh_type = SHT_IA_64_VMS_TRACE; 4625 else if (strcmp (name, ".debug_str") == 0) 4626 hdr->sh_type = SHT_IA_64_VMS_DEBUG_STR; 4627 } 4628 4629 return TRUE; 4630 } 4631 4632 /* The final processing done just before writing out a VMS IA-64 ELF 4633 object file. */ 4634 4635 static void 4636 elf64_vms_final_write_processing (bfd *abfd, 4637 bfd_boolean linker ATTRIBUTE_UNUSED) 4638 { 4639 Elf_Internal_Shdr *hdr; 4640 asection *s; 4641 int unwind_info_sect_idx = 0; 4642 4643 for (s = abfd->sections; s; s = s->next) 4644 { 4645 hdr = &elf_section_data (s)->this_hdr; 4646 4647 if (strcmp (bfd_get_section_name (abfd, hdr->bfd_section), 4648 ".IA_64.unwind_info") == 0) 4649 unwind_info_sect_idx = elf_section_data (s)->this_idx; 4650 4651 switch (hdr->sh_type) 4652 { 4653 case SHT_IA_64_UNWIND: 4654 /* VMS requires sh_info to point to the unwind info section. */ 4655 hdr->sh_info = unwind_info_sect_idx; 4656 break; 4657 } 4658 } 4659 4660 if (! elf_flags_init (abfd)) 4661 { 4662 unsigned long flags = 0; 4663 4664 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) 4665 flags |= EF_IA_64_BE; 4666 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) 4667 flags |= EF_IA_64_ABI64; 4668 4669 elf_elfheader (abfd)->e_flags = flags; 4670 elf_flags_init (abfd) = TRUE; 4671 } 4672 } 4673 4674 static bfd_boolean 4675 elf64_vms_write_shdrs_and_ehdr (bfd *abfd) 4676 { 4677 unsigned char needed_count[8]; 4678 4679 if (!bfd_elf64_write_shdrs_and_ehdr (abfd)) 4680 return FALSE; 4681 4682 bfd_putl64 (elf_ia64_vms_tdata (abfd)->needed_count, needed_count); 4683 4684 if (bfd_seek (abfd, sizeof (Elf64_External_Ehdr), SEEK_SET) != 0 4685 || bfd_bwrite (needed_count, 8, abfd) != 8) 4686 return FALSE; 4687 4688 return TRUE; 4689 } 4690 4691 static bfd_boolean 4692 elf64_vms_close_and_cleanup (bfd *abfd) 4693 { 4694 if (bfd_get_format (abfd) == bfd_object) 4695 { 4696 long isize; 4697 4698 /* Pad to 8 byte boundary for IPF/VMS. */ 4699 isize = bfd_get_size (abfd); 4700 if ((isize & 7) != 0) 4701 { 4702 int ishort = 8 - (isize & 7); 4703 bfd_uint64_t pad = 0; 4704 4705 bfd_seek (abfd, isize, SEEK_SET); 4706 bfd_bwrite (&pad, ishort, abfd); 4707 } 4708 } 4709 4710 return _bfd_elf_close_and_cleanup (abfd); 4711 } 4712 4713 /* Add symbols from an ELF object file to the linker hash table. */ 4714 4715 static bfd_boolean 4716 elf64_vms_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) 4717 { 4718 Elf_Internal_Shdr *hdr; 4719 bfd_size_type symcount; 4720 bfd_size_type extsymcount; 4721 bfd_size_type extsymoff; 4722 struct elf_link_hash_entry **sym_hash; 4723 bfd_boolean dynamic; 4724 Elf_Internal_Sym *isymbuf = NULL; 4725 Elf_Internal_Sym *isym; 4726 Elf_Internal_Sym *isymend; 4727 const struct elf_backend_data *bed; 4728 struct elf_link_hash_table *htab; 4729 bfd_size_type amt; 4730 4731 htab = elf_hash_table (info); 4732 bed = get_elf_backend_data (abfd); 4733 4734 if ((abfd->flags & DYNAMIC) == 0) 4735 dynamic = FALSE; 4736 else 4737 { 4738 dynamic = TRUE; 4739 4740 /* You can't use -r against a dynamic object. Also, there's no 4741 hope of using a dynamic object which does not exactly match 4742 the format of the output file. */ 4743 if (info->relocatable 4744 || !is_elf_hash_table (htab) 4745 || info->output_bfd->xvec != abfd->xvec) 4746 { 4747 if (info->relocatable) 4748 bfd_set_error (bfd_error_invalid_operation); 4749 else 4750 bfd_set_error (bfd_error_wrong_format); 4751 goto error_return; 4752 } 4753 } 4754 4755 if (! dynamic) 4756 { 4757 /* If we are creating a shared library, create all the dynamic 4758 sections immediately. We need to attach them to something, 4759 so we attach them to this BFD, provided it is the right 4760 format. FIXME: If there are no input BFD's of the same 4761 format as the output, we can't make a shared library. */ 4762 if (info->shared 4763 && is_elf_hash_table (htab) 4764 && info->output_bfd->xvec == abfd->xvec 4765 && !htab->dynamic_sections_created) 4766 { 4767 if (! elf64_ia64_create_dynamic_sections (abfd, info)) 4768 goto error_return; 4769 } 4770 } 4771 else if (!is_elf_hash_table (htab)) 4772 goto error_return; 4773 else 4774 { 4775 asection *s; 4776 bfd_byte *dynbuf; 4777 bfd_byte *extdyn; 4778 4779 /* ld --just-symbols and dynamic objects don't mix very well. 4780 ld shouldn't allow it. */ 4781 if ((s = abfd->sections) != NULL 4782 && s->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) 4783 abort (); 4784 4785 /* Be sure there are dynamic sections. */ 4786 if (! elf64_ia64_create_dynamic_sections (htab->dynobj, info)) 4787 goto error_return; 4788 4789 s = bfd_get_section_by_name (abfd, ".dynamic"); 4790 if (s == NULL) 4791 { 4792 /* VMS libraries do not have dynamic sections. Create one from 4793 the segment. */ 4794 Elf_Internal_Phdr *phdr; 4795 unsigned int i, phnum; 4796 4797 phdr = elf_tdata (abfd)->phdr; 4798 if (phdr == NULL) 4799 goto error_return; 4800 phnum = elf_elfheader (abfd)->e_phnum; 4801 for (i = 0; i < phnum; phdr++) 4802 if (phdr->p_type == PT_DYNAMIC) 4803 { 4804 s = bfd_make_section (abfd, ".dynamic"); 4805 if (s == NULL) 4806 goto error_return; 4807 s->vma = phdr->p_vaddr; 4808 s->lma = phdr->p_paddr; 4809 s->size = phdr->p_filesz; 4810 s->filepos = phdr->p_offset; 4811 s->flags |= SEC_HAS_CONTENTS; 4812 s->alignment_power = bfd_log2 (phdr->p_align); 4813 break; 4814 } 4815 if (s == NULL) 4816 goto error_return; 4817 } 4818 4819 /* Extract IDENT. */ 4820 if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) 4821 { 4822 error_free_dyn: 4823 free (dynbuf); 4824 goto error_return; 4825 } 4826 4827 for (extdyn = dynbuf; 4828 extdyn < dynbuf + s->size; 4829 extdyn += bed->s->sizeof_dyn) 4830 { 4831 Elf_Internal_Dyn dyn; 4832 4833 bed->s->swap_dyn_in (abfd, extdyn, &dyn); 4834 if (dyn.d_tag == DT_IA_64_VMS_IDENT) 4835 { 4836 bfd_uint64_t tagv = dyn.d_un.d_val; 4837 elf_ia64_vms_ident (abfd) = tagv; 4838 break; 4839 } 4840 } 4841 if (extdyn >= dynbuf + s->size) 4842 { 4843 /* Ident not found. */ 4844 goto error_free_dyn; 4845 } 4846 free (dynbuf); 4847 4848 /* We do not want to include any of the sections in a dynamic 4849 object in the output file. We hack by simply clobbering the 4850 list of sections in the BFD. This could be handled more 4851 cleanly by, say, a new section flag; the existing 4852 SEC_NEVER_LOAD flag is not the one we want, because that one 4853 still implies that the section takes up space in the output 4854 file. */ 4855 bfd_section_list_clear (abfd); 4856 4857 /* FIXME: should we detect if this library is already included ? 4858 This should be harmless and shouldn't happen in practice. */ 4859 } 4860 4861 hdr = &elf_tdata (abfd)->symtab_hdr; 4862 symcount = hdr->sh_size / bed->s->sizeof_sym; 4863 4864 /* The sh_info field of the symtab header tells us where the 4865 external symbols start. We don't care about the local symbols at 4866 this point. */ 4867 extsymcount = symcount - hdr->sh_info; 4868 extsymoff = hdr->sh_info; 4869 4870 sym_hash = NULL; 4871 if (extsymcount != 0) 4872 { 4873 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff, 4874 NULL, NULL, NULL); 4875 if (isymbuf == NULL) 4876 goto error_return; 4877 4878 /* We store a pointer to the hash table entry for each external 4879 symbol. */ 4880 amt = extsymcount * sizeof (struct elf_link_hash_entry *); 4881 sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt); 4882 if (sym_hash == NULL) 4883 goto error_free_sym; 4884 elf_sym_hashes (abfd) = sym_hash; 4885 } 4886 4887 for (isym = isymbuf, isymend = isymbuf + extsymcount; 4888 isym < isymend; 4889 isym++, sym_hash++) 4890 { 4891 int bind; 4892 bfd_vma value; 4893 asection *sec, *new_sec; 4894 flagword flags; 4895 const char *name; 4896 struct elf_link_hash_entry *h; 4897 bfd_boolean definition; 4898 bfd_boolean size_change_ok; 4899 bfd_boolean type_change_ok; 4900 bfd_boolean common; 4901 unsigned int old_alignment; 4902 bfd *old_bfd; 4903 4904 flags = BSF_NO_FLAGS; 4905 sec = NULL; 4906 value = isym->st_value; 4907 *sym_hash = NULL; 4908 common = bed->common_definition (isym); 4909 4910 bind = ELF_ST_BIND (isym->st_info); 4911 switch (bind) 4912 { 4913 case STB_LOCAL: 4914 /* This should be impossible, since ELF requires that all 4915 global symbols follow all local symbols, and that sh_info 4916 point to the first global symbol. Unfortunately, Irix 5 4917 screws this up. */ 4918 continue; 4919 4920 case STB_GLOBAL: 4921 if (isym->st_shndx != SHN_UNDEF && !common) 4922 flags = BSF_GLOBAL; 4923 break; 4924 4925 case STB_WEAK: 4926 flags = BSF_WEAK; 4927 break; 4928 4929 case STB_GNU_UNIQUE: 4930 flags = BSF_GNU_UNIQUE; 4931 break; 4932 4933 default: 4934 /* Leave it up to the processor backend. */ 4935 break; 4936 } 4937 4938 if (isym->st_shndx == SHN_UNDEF) 4939 sec = bfd_und_section_ptr; 4940 else if (isym->st_shndx == SHN_ABS) 4941 sec = bfd_abs_section_ptr; 4942 else if (isym->st_shndx == SHN_COMMON) 4943 { 4944 sec = bfd_com_section_ptr; 4945 /* What ELF calls the size we call the value. What ELF 4946 calls the value we call the alignment. */ 4947 value = isym->st_size; 4948 } 4949 else 4950 { 4951 sec = bfd_section_from_elf_index (abfd, isym->st_shndx); 4952 if (sec == NULL) 4953 sec = bfd_abs_section_ptr; 4954 else if (sec->kept_section) 4955 { 4956 /* Symbols from discarded section are undefined. We keep 4957 its visibility. */ 4958 sec = bfd_und_section_ptr; 4959 isym->st_shndx = SHN_UNDEF; 4960 } 4961 else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) 4962 value -= sec->vma; 4963 } 4964 4965 name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, 4966 isym->st_name); 4967 if (name == NULL) 4968 goto error_free_vers; 4969 4970 if (bed->elf_add_symbol_hook) 4971 { 4972 if (! (*bed->elf_add_symbol_hook) (abfd, info, isym, &name, &flags, 4973 &sec, &value)) 4974 goto error_free_vers; 4975 4976 /* The hook function sets the name to NULL if this symbol 4977 should be skipped for some reason. */ 4978 if (name == NULL) 4979 continue; 4980 } 4981 4982 /* Sanity check that all possibilities were handled. */ 4983 if (sec == NULL) 4984 { 4985 bfd_set_error (bfd_error_bad_value); 4986 goto error_free_vers; 4987 } 4988 4989 if (bfd_is_und_section (sec) 4990 || bfd_is_com_section (sec)) 4991 definition = FALSE; 4992 else 4993 definition = TRUE; 4994 4995 size_change_ok = FALSE; 4996 type_change_ok = bed->type_change_ok; 4997 old_alignment = 0; 4998 old_bfd = NULL; 4999 new_sec = sec; 5000 5001 if (! bfd_is_und_section (sec)) 5002 h = elf_link_hash_lookup (htab, name, TRUE, FALSE, FALSE); 5003 else 5004 h = ((struct elf_link_hash_entry *) bfd_wrapped_link_hash_lookup 5005 (abfd, info, name, TRUE, FALSE, FALSE)); 5006 if (h == NULL) 5007 goto error_free_sym; 5008 5009 *sym_hash = h; 5010 5011 if (is_elf_hash_table (htab)) 5012 { 5013 while (h->root.type == bfd_link_hash_indirect 5014 || h->root.type == bfd_link_hash_warning) 5015 h = (struct elf_link_hash_entry *) h->root.u.i.link; 5016 5017 /* Remember the old alignment if this is a common symbol, so 5018 that we don't reduce the alignment later on. We can't 5019 check later, because _bfd_generic_link_add_one_symbol 5020 will set a default for the alignment which we want to 5021 override. We also remember the old bfd where the existing 5022 definition comes from. */ 5023 switch (h->root.type) 5024 { 5025 default: 5026 break; 5027 5028 case bfd_link_hash_defined: 5029 if (abfd->selective_search) 5030 continue; 5031 /* Fall-through. */ 5032 case bfd_link_hash_defweak: 5033 old_bfd = h->root.u.def.section->owner; 5034 break; 5035 5036 case bfd_link_hash_common: 5037 old_bfd = h->root.u.c.p->section->owner; 5038 old_alignment = h->root.u.c.p->alignment_power; 5039 break; 5040 } 5041 } 5042 5043 if (! (_bfd_generic_link_add_one_symbol 5044 (info, abfd, name, flags, sec, value, NULL, FALSE, bed->collect, 5045 (struct bfd_link_hash_entry **) sym_hash))) 5046 goto error_free_vers; 5047 5048 h = *sym_hash; 5049 while (h->root.type == bfd_link_hash_indirect 5050 || h->root.type == bfd_link_hash_warning) 5051 h = (struct elf_link_hash_entry *) h->root.u.i.link; 5052 5053 *sym_hash = h; 5054 if (definition) 5055 h->unique_global = (flags & BSF_GNU_UNIQUE) != 0; 5056 5057 /* Set the alignment of a common symbol. */ 5058 if ((common || bfd_is_com_section (sec)) 5059 && h->root.type == bfd_link_hash_common) 5060 { 5061 unsigned int align; 5062 5063 if (common) 5064 align = bfd_log2 (isym->st_value); 5065 else 5066 { 5067 /* The new symbol is a common symbol in a shared object. 5068 We need to get the alignment from the section. */ 5069 align = new_sec->alignment_power; 5070 } 5071 if (align > old_alignment 5072 /* Permit an alignment power of zero if an alignment of one 5073 is specified and no other alignments have been specified. */ 5074 || (isym->st_value == 1 && old_alignment == 0)) 5075 h->root.u.c.p->alignment_power = align; 5076 else 5077 h->root.u.c.p->alignment_power = old_alignment; 5078 } 5079 5080 if (is_elf_hash_table (htab)) 5081 { 5082 /* Check the alignment when a common symbol is involved. This 5083 can change when a common symbol is overridden by a normal 5084 definition or a common symbol is ignored due to the old 5085 normal definition. We need to make sure the maximum 5086 alignment is maintained. */ 5087 if ((old_alignment || common) 5088 && h->root.type != bfd_link_hash_common) 5089 { 5090 unsigned int common_align; 5091 unsigned int normal_align; 5092 unsigned int symbol_align; 5093 bfd *normal_bfd; 5094 bfd *common_bfd; 5095 5096 symbol_align = ffs (h->root.u.def.value) - 1; 5097 if (h->root.u.def.section->owner != NULL 5098 && (h->root.u.def.section->owner->flags & DYNAMIC) == 0) 5099 { 5100 normal_align = h->root.u.def.section->alignment_power; 5101 if (normal_align > symbol_align) 5102 normal_align = symbol_align; 5103 } 5104 else 5105 normal_align = symbol_align; 5106 5107 if (old_alignment) 5108 { 5109 common_align = old_alignment; 5110 common_bfd = old_bfd; 5111 normal_bfd = abfd; 5112 } 5113 else 5114 { 5115 common_align = bfd_log2 (isym->st_value); 5116 common_bfd = abfd; 5117 normal_bfd = old_bfd; 5118 } 5119 5120 if (normal_align < common_align) 5121 { 5122 /* PR binutils/2735 */ 5123 if (normal_bfd == NULL) 5124 (*_bfd_error_handler) 5125 (_("Warning: alignment %u of common symbol `%s' in %B" 5126 " is greater than the alignment (%u) of its section %A"), 5127 common_bfd, h->root.u.def.section, 5128 1 << common_align, name, 1 << normal_align); 5129 else 5130 (*_bfd_error_handler) 5131 (_("Warning: alignment %u of symbol `%s' in %B" 5132 " is smaller than %u in %B"), 5133 normal_bfd, common_bfd, 5134 1 << normal_align, name, 1 << common_align); 5135 } 5136 } 5137 5138 /* Remember the symbol size if it isn't undefined. */ 5139 if ((isym->st_size != 0 && isym->st_shndx != SHN_UNDEF) 5140 && (definition || h->size == 0)) 5141 { 5142 if (h->size != 0 5143 && h->size != isym->st_size 5144 && ! size_change_ok) 5145 (*_bfd_error_handler) 5146 (_("Warning: size of symbol `%s' changed" 5147 " from %lu in %B to %lu in %B"), 5148 old_bfd, abfd, 5149 name, (unsigned long) h->size, 5150 (unsigned long) isym->st_size); 5151 5152 h->size = isym->st_size; 5153 } 5154 5155 /* If this is a common symbol, then we always want H->SIZE 5156 to be the size of the common symbol. The code just above 5157 won't fix the size if a common symbol becomes larger. We 5158 don't warn about a size change here, because that is 5159 covered by --warn-common. Allow changed between different 5160 function types. */ 5161 if (h->root.type == bfd_link_hash_common) 5162 h->size = h->root.u.c.size; 5163 5164 if (ELF_ST_TYPE (isym->st_info) != STT_NOTYPE 5165 && (definition || h->type == STT_NOTYPE)) 5166 { 5167 unsigned int type = ELF_ST_TYPE (isym->st_info); 5168 5169 if (h->type != type) 5170 { 5171 if (h->type != STT_NOTYPE && ! type_change_ok) 5172 (*_bfd_error_handler) 5173 (_("Warning: type of symbol `%s' changed" 5174 " from %d to %d in %B"), 5175 abfd, name, h->type, type); 5176 5177 h->type = type; 5178 } 5179 } 5180 5181 /* Set a flag in the hash table entry indicating the type of 5182 reference or definition we just found. Keep a count of 5183 the number of dynamic symbols we find. A dynamic symbol 5184 is one which is referenced or defined by both a regular 5185 object and a shared object. */ 5186 if (! dynamic) 5187 { 5188 if (! definition) 5189 { 5190 h->ref_regular = 1; 5191 if (bind != STB_WEAK) 5192 h->ref_regular_nonweak = 1; 5193 } 5194 else 5195 { 5196 BFD_ASSERT (!h->def_dynamic); 5197 h->def_regular = 1; 5198 } 5199 } 5200 else 5201 { 5202 BFD_ASSERT (definition); 5203 h->def_dynamic = 1; 5204 h->dynindx = -2; 5205 ((struct elf64_ia64_link_hash_entry *)h)->shl = abfd; 5206 } 5207 } 5208 } 5209 5210 if (isymbuf != NULL) 5211 { 5212 free (isymbuf); 5213 isymbuf = NULL; 5214 } 5215 5216 /* If this object is the same format as the output object, and it is 5217 not a shared library, then let the backend look through the 5218 relocs. 5219 5220 This is required to build global offset table entries and to 5221 arrange for dynamic relocs. It is not required for the 5222 particular common case of linking non PIC code, even when linking 5223 against shared libraries, but unfortunately there is no way of 5224 knowing whether an object file has been compiled PIC or not. 5225 Looking through the relocs is not particularly time consuming. 5226 The problem is that we must either (1) keep the relocs in memory, 5227 which causes the linker to require additional runtime memory or 5228 (2) read the relocs twice from the input file, which wastes time. 5229 This would be a good case for using mmap. 5230 5231 I have no idea how to handle linking PIC code into a file of a 5232 different format. It probably can't be done. */ 5233 if (! dynamic 5234 && is_elf_hash_table (htab) 5235 && bed->check_relocs != NULL 5236 && (*bed->relocs_compatible) (abfd->xvec, info->output_bfd->xvec)) 5237 { 5238 asection *o; 5239 5240 for (o = abfd->sections; o != NULL; o = o->next) 5241 { 5242 Elf_Internal_Rela *internal_relocs; 5243 bfd_boolean ok; 5244 5245 if ((o->flags & SEC_RELOC) == 0 5246 || o->reloc_count == 0 5247 || ((info->strip == strip_all || info->strip == strip_debugger) 5248 && (o->flags & SEC_DEBUGGING) != 0) 5249 || bfd_is_abs_section (o->output_section)) 5250 continue; 5251 5252 internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, 5253 info->keep_memory); 5254 if (internal_relocs == NULL) 5255 goto error_return; 5256 5257 ok = (*bed->check_relocs) (abfd, info, o, internal_relocs); 5258 5259 if (elf_section_data (o)->relocs != internal_relocs) 5260 free (internal_relocs); 5261 5262 if (! ok) 5263 goto error_return; 5264 } 5265 } 5266 5267 return TRUE; 5268 5269 error_free_vers: 5270 error_free_sym: 5271 if (isymbuf != NULL) 5272 free (isymbuf); 5273 error_return: 5274 return FALSE; 5275 } 5276 5277 static bfd_boolean 5278 elf64_vms_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info) 5279 { 5280 int pass; 5281 struct bfd_link_hash_entry **pundef; 5282 struct bfd_link_hash_entry **next_pundef; 5283 5284 /* We only accept VMS libraries. */ 5285 if (info->output_bfd->xvec != abfd->xvec) 5286 { 5287 bfd_set_error (bfd_error_wrong_format); 5288 return FALSE; 5289 } 5290 5291 /* The archive_pass field in the archive itself is used to 5292 initialize PASS, since we may search the same archive multiple 5293 times. */ 5294 pass = ++abfd->archive_pass; 5295 5296 /* Look through the list of undefined symbols. */ 5297 for (pundef = &info->hash->undefs; *pundef != NULL; pundef = next_pundef) 5298 { 5299 struct bfd_link_hash_entry *h; 5300 symindex symidx; 5301 bfd *element; 5302 bfd *orig_element; 5303 5304 h = *pundef; 5305 next_pundef = &(*pundef)->u.undef.next; 5306 5307 /* When a symbol is defined, it is not necessarily removed from 5308 the list. */ 5309 if (h->type != bfd_link_hash_undefined 5310 && h->type != bfd_link_hash_common) 5311 { 5312 /* Remove this entry from the list, for general cleanliness 5313 and because we are going to look through the list again 5314 if we search any more libraries. We can't remove the 5315 entry if it is the tail, because that would lose any 5316 entries we add to the list later on. */ 5317 if (*pundef != info->hash->undefs_tail) 5318 { 5319 *pundef = *next_pundef; 5320 next_pundef = pundef; 5321 } 5322 continue; 5323 } 5324 5325 /* Look for this symbol in the archive hash table. */ 5326 symidx = _bfd_vms_lib_find_symbol (abfd, h->root.string); 5327 if (symidx == BFD_NO_MORE_SYMBOLS) 5328 { 5329 /* Nothing in this slot. */ 5330 continue; 5331 } 5332 5333 element = bfd_get_elt_at_index (abfd, symidx); 5334 if (element == NULL) 5335 return FALSE; 5336 5337 if (element->archive_pass == -1 || element->archive_pass == pass) 5338 { 5339 /* Next symbol if this archive is wrong or already handled. */ 5340 continue; 5341 } 5342 5343 orig_element = element; 5344 if (bfd_is_thin_archive (abfd)) 5345 { 5346 element = _bfd_vms_lib_get_imagelib_file (element); 5347 if (element == NULL || !bfd_check_format (element, bfd_object)) 5348 { 5349 orig_element->archive_pass = -1; 5350 return FALSE; 5351 } 5352 } 5353 else if (! bfd_check_format (element, bfd_object)) 5354 { 5355 element->archive_pass = -1; 5356 return FALSE; 5357 } 5358 5359 /* Unlike the generic linker, we know that this element provides 5360 a definition for an undefined symbol and we know that we want 5361 to include it. We don't need to check anything. */ 5362 if (! (*info->callbacks->add_archive_element) (info, element, 5363 h->root.string, &element)) 5364 return FALSE; 5365 if (! elf64_vms_link_add_object_symbols (element, info)) 5366 return FALSE; 5367 5368 orig_element->archive_pass = pass; 5369 } 5370 5371 return TRUE; 5372 } 5373 5374 static bfd_boolean 5375 elf64_vms_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) 5376 { 5377 switch (bfd_get_format (abfd)) 5378 { 5379 case bfd_object: 5380 return elf64_vms_link_add_object_symbols (abfd, info); 5381 break; 5382 case bfd_archive: 5383 return elf64_vms_link_add_archive_symbols (abfd, info); 5384 break; 5385 default: 5386 bfd_set_error (bfd_error_wrong_format); 5387 return FALSE; 5388 } 5389 } 5390 5391 static bfd_boolean 5392 elf64_ia64_vms_mkobject (bfd *abfd) 5393 { 5394 return bfd_elf_allocate_object 5395 (abfd, sizeof (struct elf64_ia64_vms_obj_tdata), IA64_ELF_DATA); 5396 } 5397 5398 5399 /* Size-dependent data and functions. */ 5400 static const struct elf_size_info elf64_ia64_vms_size_info = { 5401 sizeof (Elf64_External_VMS_Ehdr), 5402 sizeof (Elf64_External_Phdr), 5403 sizeof (Elf64_External_Shdr), 5404 sizeof (Elf64_External_Rel), 5405 sizeof (Elf64_External_Rela), 5406 sizeof (Elf64_External_Sym), 5407 sizeof (Elf64_External_Dyn), 5408 sizeof (Elf_External_Note), 5409 4, 5410 1, 5411 64, 3, /* ARCH_SIZE, LOG_FILE_ALIGN */ 5412 ELFCLASS64, EV_CURRENT, 5413 bfd_elf64_write_out_phdrs, 5414 elf64_vms_write_shdrs_and_ehdr, 5415 bfd_elf64_checksum_contents, 5416 bfd_elf64_write_relocs, 5417 bfd_elf64_swap_symbol_in, 5418 bfd_elf64_swap_symbol_out, 5419 bfd_elf64_slurp_reloc_table, 5420 bfd_elf64_slurp_symbol_table, 5421 bfd_elf64_swap_dyn_in, 5422 bfd_elf64_swap_dyn_out, 5423 bfd_elf64_swap_reloc_in, 5424 bfd_elf64_swap_reloc_out, 5425 bfd_elf64_swap_reloca_in, 5426 bfd_elf64_swap_reloca_out 5427 }; 5428 5429 #define ELF_ARCH bfd_arch_ia64 5430 #define ELF_MACHINE_CODE EM_IA_64 5431 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ 5432 #define ELF_COMMONPAGESIZE 0x200 /* 16KB */ 5433 5434 #define elf_backend_section_from_shdr \ 5435 elf64_ia64_section_from_shdr 5436 #define elf_backend_section_flags \ 5437 elf64_ia64_section_flags 5438 #define elf_backend_fake_sections \ 5439 elf64_ia64_fake_sections 5440 #define elf_backend_final_write_processing \ 5441 elf64_ia64_final_write_processing 5442 #define elf_backend_add_symbol_hook \ 5443 elf64_ia64_add_symbol_hook 5444 #define elf_info_to_howto \ 5445 elf64_ia64_info_to_howto 5446 5447 #define bfd_elf64_bfd_reloc_type_lookup \ 5448 ia64_elf_reloc_type_lookup 5449 #define bfd_elf64_bfd_reloc_name_lookup \ 5450 ia64_elf_reloc_name_lookup 5451 #define bfd_elf64_bfd_is_local_label_name \ 5452 elf64_ia64_is_local_label_name 5453 #define bfd_elf64_bfd_relax_section \ 5454 elf64_ia64_relax_section 5455 5456 #define elf_backend_object_p \ 5457 elf64_ia64_object_p 5458 5459 /* Stuff for the BFD linker: */ 5460 #define bfd_elf64_bfd_link_hash_table_create \ 5461 elf64_ia64_hash_table_create 5462 #define elf_backend_create_dynamic_sections \ 5463 elf64_ia64_create_dynamic_sections 5464 #define elf_backend_check_relocs \ 5465 elf64_ia64_check_relocs 5466 #define elf_backend_adjust_dynamic_symbol \ 5467 elf64_ia64_adjust_dynamic_symbol 5468 #define elf_backend_size_dynamic_sections \ 5469 elf64_ia64_size_dynamic_sections 5470 #define elf_backend_omit_section_dynsym \ 5471 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 5472 #define elf_backend_relocate_section \ 5473 elf64_ia64_relocate_section 5474 #define elf_backend_finish_dynamic_symbol \ 5475 elf64_ia64_finish_dynamic_symbol 5476 #define elf_backend_finish_dynamic_sections \ 5477 elf64_ia64_finish_dynamic_sections 5478 #define bfd_elf64_bfd_final_link \ 5479 elf64_ia64_final_link 5480 5481 #define bfd_elf64_bfd_merge_private_bfd_data \ 5482 elf64_ia64_merge_private_bfd_data 5483 #define bfd_elf64_bfd_set_private_flags \ 5484 elf64_ia64_set_private_flags 5485 #define bfd_elf64_bfd_print_private_bfd_data \ 5486 elf64_ia64_print_private_bfd_data 5487 5488 #define elf_backend_plt_readonly 1 5489 #define elf_backend_want_plt_sym 0 5490 #define elf_backend_plt_alignment 5 5491 #define elf_backend_got_header_size 0 5492 #define elf_backend_want_got_plt 1 5493 #define elf_backend_may_use_rel_p 1 5494 #define elf_backend_may_use_rela_p 1 5495 #define elf_backend_default_use_rela_p 1 5496 #define elf_backend_want_dynbss 0 5497 #define elf_backend_hide_symbol elf64_ia64_hash_hide_symbol 5498 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol 5499 #define elf_backend_reloc_type_class elf64_ia64_reloc_type_class 5500 #define elf_backend_rela_normal 1 5501 #define elf_backend_special_sections elf64_ia64_special_sections 5502 #define elf_backend_default_execstack 0 5503 5504 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with 5505 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. 5506 We don't want to flood users with so many error messages. We turn 5507 off the warning for now. It will be turned on later when the Intel 5508 compiler is fixed. */ 5509 #define elf_backend_link_order_error_handler NULL 5510 5511 /* VMS-specific vectors. */ 5512 5513 #undef TARGET_LITTLE_SYM 5514 #define TARGET_LITTLE_SYM ia64_elf64_vms_vec 5515 #undef TARGET_LITTLE_NAME 5516 #define TARGET_LITTLE_NAME "elf64-ia64-vms" 5517 #undef TARGET_BIG_SYM 5518 #undef TARGET_BIG_NAME 5519 5520 /* These are VMS specific functions. */ 5521 5522 #undef elf_backend_object_p 5523 #define elf_backend_object_p elf64_vms_object_p 5524 5525 #undef elf_backend_section_from_shdr 5526 #define elf_backend_section_from_shdr elf64_vms_section_from_shdr 5527 5528 #undef elf_backend_post_process_headers 5529 #define elf_backend_post_process_headers elf64_vms_post_process_headers 5530 5531 #undef elf_backend_section_processing 5532 #define elf_backend_section_processing elf64_vms_section_processing 5533 5534 #undef elf_backend_final_write_processing 5535 #define elf_backend_final_write_processing elf64_vms_final_write_processing 5536 5537 #undef bfd_elf64_close_and_cleanup 5538 #define bfd_elf64_close_and_cleanup elf64_vms_close_and_cleanup 5539 5540 #undef elf_backend_section_from_bfd_section 5541 5542 #undef elf_backend_symbol_processing 5543 5544 #undef elf_backend_want_p_paddr_set_to_zero 5545 5546 #undef ELF_OSABI 5547 #define ELF_OSABI ELFOSABI_OPENVMS 5548 5549 #undef ELF_MAXPAGESIZE 5550 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ 5551 5552 #undef elf64_bed 5553 #define elf64_bed elf64_ia64_vms_bed 5554 5555 #define elf_backend_size_info elf64_ia64_vms_size_info 5556 5557 /* Use VMS-style archives (in particular, don't use the standard coff 5558 archive format). */ 5559 #define bfd_elf64_archive_functions 5560 5561 #undef bfd_elf64_archive_p 5562 #define bfd_elf64_archive_p _bfd_vms_lib_ia64_archive_p 5563 #undef bfd_elf64_write_archive_contents 5564 #define bfd_elf64_write_archive_contents _bfd_vms_lib_write_archive_contents 5565 #undef bfd_elf64_mkarchive 5566 #define bfd_elf64_mkarchive _bfd_vms_lib_ia64_mkarchive 5567 5568 #define bfd_elf64_archive_slurp_armap \ 5569 _bfd_vms_lib_slurp_armap 5570 #define bfd_elf64_archive_slurp_extended_name_table \ 5571 _bfd_vms_lib_slurp_extended_name_table 5572 #define bfd_elf64_archive_construct_extended_name_table \ 5573 _bfd_vms_lib_construct_extended_name_table 5574 #define bfd_elf64_archive_truncate_arname \ 5575 _bfd_vms_lib_truncate_arname 5576 #define bfd_elf64_archive_write_armap \ 5577 _bfd_vms_lib_write_armap 5578 #define bfd_elf64_archive_read_ar_hdr \ 5579 _bfd_vms_lib_read_ar_hdr 5580 #define bfd_elf64_archive_write_ar_hdr \ 5581 _bfd_vms_lib_write_ar_hdr 5582 #define bfd_elf64_archive_openr_next_archived_file \ 5583 _bfd_vms_lib_openr_next_archived_file 5584 #define bfd_elf64_archive_get_elt_at_index \ 5585 _bfd_vms_lib_get_elt_at_index 5586 #define bfd_elf64_archive_generic_stat_arch_elt \ 5587 _bfd_vms_lib_generic_stat_arch_elt 5588 #define bfd_elf64_archive_update_armap_timestamp \ 5589 _bfd_vms_lib_update_armap_timestamp 5590 5591 /* VMS link methods. */ 5592 #undef bfd_elf64_bfd_link_add_symbols 5593 #define bfd_elf64_bfd_link_add_symbols elf64_vms_bfd_link_add_symbols 5594 5595 #undef elf_backend_want_got_sym 5596 #define elf_backend_want_got_sym 0 5597 5598 #undef bfd_elf64_mkobject 5599 #define bfd_elf64_mkobject elf64_ia64_vms_mkobject 5600 5601 /* Redefine to align segments on block size. */ 5602 #undef ELF_MAXPAGESIZE 5603 #define ELF_MAXPAGESIZE 0x200 /* 512B */ 5604 5605 #undef elf_backend_want_got_plt 5606 #define elf_backend_want_got_plt 0 5607 5608 #include "elf64-target.h" 5609
