1 /* IA-64 support for OpenVMS 2 Copyright (C) 1998-2016 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 (bfd_link_relocatable (link_info)) 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 && !bfd_link_relocatable (info) 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 | (bfd_link_pie (info) ? 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 (bfd_link_pie (info)) 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 (bfd_link_relocatable (info)) 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 && ((!bfd_link_executable (info) 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 (bfd_link_pic (info) || 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 (bfd_link_pic (info) || 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 && ((!bfd_link_executable (info) 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 (bfd_link_pic (info) || 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 (bfd_link_pic (info) || 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 = bfd_link_pic (x->info); 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 && !bfd_link_pie (x->info)) 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 (((bfd_link_pic (info) 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 || !bfd_link_pie (info) 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 && bfd_link_pic (info) 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 (!bfd_link_relocatable (info)) 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 (!bfd_link_relocatable (info)) 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 (bfd_link_relocatable (info)) 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 (!bfd_link_relocatable (info) 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 (bfd_link_relocatable (info)) 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 || bfd_link_pic (info)) 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 || bfd_link_pie (info)) 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 || bfd_link_pic (info)) 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 (*info->callbacks->warning) (info, _("unsupported reloc"), 3906 name, input_bfd, 3907 input_section, rel->r_offset); 3908 ret_val = FALSE; 3909 } 3910 break; 3911 3912 case bfd_reloc_dangerous: 3913 case bfd_reloc_outofrange: 3914 case bfd_reloc_overflow: 3915 default: 3916 { 3917 const char *name; 3918 3919 if (h) 3920 name = h->root.root.string; 3921 else 3922 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 3923 sym_sec); 3924 3925 switch (r_type) 3926 { 3927 case R_IA64_TPREL14: 3928 case R_IA64_TPREL22: 3929 case R_IA64_TPREL64I: 3930 case R_IA64_DTPREL14: 3931 case R_IA64_DTPREL22: 3932 case R_IA64_DTPREL64I: 3933 case R_IA64_DTPREL32LSB: 3934 case R_IA64_DTPREL32MSB: 3935 case R_IA64_DTPREL64LSB: 3936 case R_IA64_DTPREL64MSB: 3937 case R_IA64_LTOFF_TPREL22: 3938 case R_IA64_LTOFF_DTPMOD22: 3939 case R_IA64_LTOFF_DTPREL22: 3940 (*_bfd_error_handler) 3941 (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."), 3942 input_bfd, input_section, howto->name, name, 3943 rel->r_offset); 3944 break; 3945 3946 case R_IA64_PCREL21B: 3947 case R_IA64_PCREL21BI: 3948 case R_IA64_PCREL21M: 3949 case R_IA64_PCREL21F: 3950 if (is_elf_hash_table (info->hash)) 3951 { 3952 /* Relaxtion is always performed for ELF output. 3953 Overflow failures for those relocations mean 3954 that the section is too big to relax. */ 3955 (*_bfd_error_handler) 3956 (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."), 3957 input_bfd, input_section, howto->name, name, 3958 rel->r_offset, input_section->size); 3959 break; 3960 } 3961 default: 3962 (*info->callbacks->reloc_overflow) (info, 3963 &h->root, 3964 name, 3965 howto->name, 3966 (bfd_vma) 0, 3967 input_bfd, 3968 input_section, 3969 rel->r_offset); 3970 break; 3971 } 3972 3973 ret_val = FALSE; 3974 } 3975 break; 3976 } 3977 } 3978 3979 return ret_val; 3980 } 3981 3982 static bfd_boolean 3983 elf64_ia64_finish_dynamic_symbol (bfd *output_bfd, 3984 struct bfd_link_info *info, 3985 struct elf_link_hash_entry *h, 3986 Elf_Internal_Sym *sym) 3987 { 3988 struct elf64_ia64_link_hash_table *ia64_info; 3989 struct elf64_ia64_dyn_sym_info *dyn_i; 3990 3991 ia64_info = elf64_ia64_hash_table (info); 3992 if (ia64_info == NULL) 3993 return FALSE; 3994 3995 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); 3996 3997 /* Fill in the PLT data, if required. */ 3998 if (dyn_i && dyn_i->want_plt) 3999 { 4000 bfd_byte *loc; 4001 asection *plt_sec; 4002 bfd_vma plt_addr, pltoff_addr, gp_val; 4003 4004 gp_val = _bfd_get_gp_value (output_bfd); 4005 4006 plt_sec = ia64_info->root.splt; 4007 plt_addr = 0; /* Not used as overriden by FIXUPs. */ 4008 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); 4009 4010 /* Initialize the FULL PLT entry, if needed. */ 4011 if (dyn_i->want_plt2) 4012 { 4013 loc = plt_sec->contents + dyn_i->plt2_offset; 4014 4015 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); 4016 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); 4017 4018 /* Mark the symbol as undefined, rather than as defined in the 4019 plt section. Leave the value alone. */ 4020 /* ??? We didn't redefine it in adjust_dynamic_symbol in the 4021 first place. But perhaps elflink.c did some for us. */ 4022 if (!h->def_regular) 4023 sym->st_shndx = SHN_UNDEF; 4024 } 4025 4026 /* VMS: FIXFD. */ 4027 elf64_ia64_install_fixup 4028 (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, ia64_info->pltoff_sec, 4029 pltoff_addr - (ia64_info->pltoff_sec->output_section->vma 4030 + ia64_info->pltoff_sec->output_offset), 0); 4031 } 4032 4033 /* Mark some specially defined symbols as absolute. */ 4034 if (h == ia64_info->root.hdynamic 4035 || h == ia64_info->root.hgot 4036 || h == ia64_info->root.hplt) 4037 sym->st_shndx = SHN_ABS; 4038 4039 return TRUE; 4040 } 4041 4042 static bfd_boolean 4043 elf64_ia64_finish_dynamic_sections (bfd *abfd, 4044 struct bfd_link_info *info) 4045 { 4046 struct elf64_ia64_link_hash_table *ia64_info; 4047 bfd *dynobj; 4048 4049 ia64_info = elf64_ia64_hash_table (info); 4050 if (ia64_info == NULL) 4051 return FALSE; 4052 4053 dynobj = ia64_info->root.dynobj; 4054 4055 if (elf_hash_table (info)->dynamic_sections_created) 4056 { 4057 Elf64_External_Dyn *dyncon, *dynconend; 4058 asection *sdyn; 4059 asection *unwind_sec; 4060 bfd_vma gp_val; 4061 unsigned int gp_seg; 4062 bfd_vma gp_off; 4063 Elf_Internal_Phdr *phdr; 4064 Elf_Internal_Phdr *base_phdr; 4065 unsigned int unwind_seg = 0; 4066 unsigned int code_seg = 0; 4067 4068 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4069 BFD_ASSERT (sdyn != NULL); 4070 dyncon = (Elf64_External_Dyn *) sdyn->contents; 4071 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); 4072 4073 gp_val = _bfd_get_gp_value (abfd); 4074 phdr = _bfd_elf_find_segment_containing_section 4075 (info->output_bfd, ia64_info->pltoff_sec->output_section); 4076 BFD_ASSERT (phdr != NULL); 4077 base_phdr = elf_tdata (info->output_bfd)->phdr; 4078 gp_seg = phdr - base_phdr; 4079 gp_off = gp_val - phdr->p_vaddr; 4080 4081 unwind_sec = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); 4082 if (unwind_sec != NULL) 4083 { 4084 asection *code_sec; 4085 4086 phdr = _bfd_elf_find_segment_containing_section (abfd, unwind_sec); 4087 BFD_ASSERT (phdr != NULL); 4088 unwind_seg = phdr - base_phdr; 4089 4090 code_sec = bfd_get_section_by_name (abfd, "$CODE$"); 4091 phdr = _bfd_elf_find_segment_containing_section (abfd, code_sec); 4092 BFD_ASSERT (phdr != NULL); 4093 code_seg = phdr - base_phdr; 4094 } 4095 4096 for (; dyncon < dynconend; dyncon++) 4097 { 4098 Elf_Internal_Dyn dyn; 4099 4100 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); 4101 4102 switch (dyn.d_tag) 4103 { 4104 case DT_IA_64_VMS_FIXUP_RELA_OFF: 4105 dyn.d_un.d_val += 4106 (ia64_info->fixups_sec->output_section->vma 4107 + ia64_info->fixups_sec->output_offset) 4108 - (sdyn->output_section->vma + sdyn->output_offset); 4109 break; 4110 4111 case DT_IA_64_VMS_PLTGOT_OFFSET: 4112 dyn.d_un.d_val = gp_off; 4113 break; 4114 4115 case DT_IA_64_VMS_PLTGOT_SEG: 4116 dyn.d_un.d_val = gp_seg; 4117 break; 4118 4119 case DT_IA_64_VMS_UNWINDSZ: 4120 if (unwind_sec == NULL) 4121 { 4122 dyn.d_tag = DT_NULL; 4123 dyn.d_un.d_val = 0xdead; 4124 } 4125 else 4126 dyn.d_un.d_val = unwind_sec->size; 4127 break; 4128 4129 case DT_IA_64_VMS_UNWIND_CODSEG: 4130 dyn.d_un.d_val = code_seg; 4131 break; 4132 4133 case DT_IA_64_VMS_UNWIND_INFOSEG: 4134 case DT_IA_64_VMS_UNWIND_SEG: 4135 dyn.d_un.d_val = unwind_seg; 4136 break; 4137 4138 case DT_IA_64_VMS_UNWIND_OFFSET: 4139 break; 4140 4141 default: 4142 /* No need to rewrite the entry. */ 4143 continue; 4144 } 4145 4146 bfd_elf64_swap_dyn_out (abfd, &dyn, dyncon); 4147 } 4148 } 4149 4150 /* Handle transfer addresses. */ 4151 { 4152 asection *tfr_sec = ia64_info->transfer_sec; 4153 struct elf64_vms_transfer *tfr; 4154 struct elf_link_hash_entry *tfr3; 4155 4156 tfr = (struct elf64_vms_transfer *)tfr_sec->contents; 4157 bfd_putl32 (6 * 8, tfr->size); 4158 bfd_putl64 (tfr_sec->output_section->vma 4159 + tfr_sec->output_offset 4160 + 6 * 8, tfr->tfradr3); 4161 4162 tfr3 = elf_link_hash_lookup (elf_hash_table (info), "ELF$TFRADR", FALSE, 4163 FALSE, FALSE); 4164 4165 if (tfr3 4166 && (tfr3->root.type == bfd_link_hash_defined 4167 || tfr3->root.type == bfd_link_hash_defweak)) 4168 { 4169 asection *tfr3_sec = tfr3->root.u.def.section; 4170 bfd_vma tfr3_val; 4171 4172 tfr3_val = (tfr3->root.u.def.value 4173 + tfr3_sec->output_section->vma 4174 + tfr3_sec->output_offset); 4175 4176 bfd_putl64 (tfr3_val, tfr->tfr3_func); 4177 bfd_putl64 (_bfd_get_gp_value (info->output_bfd), tfr->tfr3_gp); 4178 } 4179 4180 /* FIXME: set linker flags, 4181 handle lib$initialize. */ 4182 } 4183 4184 return TRUE; 4185 } 4186 4187 /* ELF file flag handling: */ 4188 4189 /* Function to keep IA-64 specific file flags. */ 4190 static bfd_boolean 4191 elf64_ia64_set_private_flags (bfd *abfd, flagword flags) 4192 { 4193 BFD_ASSERT (!elf_flags_init (abfd) 4194 || elf_elfheader (abfd)->e_flags == flags); 4195 4196 elf_elfheader (abfd)->e_flags = flags; 4197 elf_flags_init (abfd) = TRUE; 4198 return TRUE; 4199 } 4200 4201 /* Merge backend specific data from an object file to the output 4202 object file when linking. */ 4203 static bfd_boolean 4204 elf64_ia64_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 4205 { 4206 flagword out_flags; 4207 flagword in_flags; 4208 bfd_boolean ok = TRUE; 4209 4210 /* Don't even pretend to support mixed-format linking. */ 4211 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4212 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4213 return FALSE; 4214 4215 in_flags = elf_elfheader (ibfd)->e_flags; 4216 out_flags = elf_elfheader (obfd)->e_flags; 4217 4218 if (! elf_flags_init (obfd)) 4219 { 4220 elf_flags_init (obfd) = TRUE; 4221 elf_elfheader (obfd)->e_flags = in_flags; 4222 4223 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4224 && bfd_get_arch_info (obfd)->the_default) 4225 { 4226 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 4227 bfd_get_mach (ibfd)); 4228 } 4229 4230 return TRUE; 4231 } 4232 4233 /* Check flag compatibility. */ 4234 if (in_flags == out_flags) 4235 return TRUE; 4236 4237 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ 4238 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) 4239 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; 4240 4241 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) 4242 { 4243 (*_bfd_error_handler) 4244 (_("%B: linking trap-on-NULL-dereference with non-trapping files"), 4245 ibfd); 4246 4247 bfd_set_error (bfd_error_bad_value); 4248 ok = FALSE; 4249 } 4250 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) 4251 { 4252 (*_bfd_error_handler) 4253 (_("%B: linking big-endian files with little-endian files"), 4254 ibfd); 4255 4256 bfd_set_error (bfd_error_bad_value); 4257 ok = FALSE; 4258 } 4259 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) 4260 { 4261 (*_bfd_error_handler) 4262 (_("%B: linking 64-bit files with 32-bit files"), 4263 ibfd); 4264 4265 bfd_set_error (bfd_error_bad_value); 4266 ok = FALSE; 4267 } 4268 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) 4269 { 4270 (*_bfd_error_handler) 4271 (_("%B: linking constant-gp files with non-constant-gp files"), 4272 ibfd); 4273 4274 bfd_set_error (bfd_error_bad_value); 4275 ok = FALSE; 4276 } 4277 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) 4278 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) 4279 { 4280 (*_bfd_error_handler) 4281 (_("%B: linking auto-pic files with non-auto-pic files"), 4282 ibfd); 4283 4284 bfd_set_error (bfd_error_bad_value); 4285 ok = FALSE; 4286 } 4287 4288 return ok; 4289 } 4290 4291 static bfd_boolean 4292 elf64_ia64_print_private_bfd_data (bfd *abfd, void * ptr) 4293 { 4294 FILE *file = (FILE *) ptr; 4295 flagword flags = elf_elfheader (abfd)->e_flags; 4296 4297 BFD_ASSERT (abfd != NULL && ptr != NULL); 4298 4299 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", 4300 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", 4301 (flags & EF_IA_64_EXT) ? "EXT, " : "", 4302 (flags & EF_IA_64_BE) ? "BE, " : "LE, ", 4303 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", 4304 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", 4305 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", 4306 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", 4307 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); 4308 4309 _bfd_elf_print_private_bfd_data (abfd, ptr); 4310 return TRUE; 4311 } 4312 4313 static enum elf_reloc_type_class 4314 elf64_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4315 const asection *rel_sec ATTRIBUTE_UNUSED, 4316 const Elf_Internal_Rela *rela) 4317 { 4318 switch ((int) ELF64_R_TYPE (rela->r_info)) 4319 { 4320 case R_IA64_REL32MSB: 4321 case R_IA64_REL32LSB: 4322 case R_IA64_REL64MSB: 4323 case R_IA64_REL64LSB: 4324 return reloc_class_relative; 4325 case R_IA64_IPLTMSB: 4326 case R_IA64_IPLTLSB: 4327 return reloc_class_plt; 4328 case R_IA64_COPY: 4329 return reloc_class_copy; 4330 default: 4331 return reloc_class_normal; 4332 } 4333 } 4334 4335 static const struct bfd_elf_special_section elf64_ia64_special_sections[] = 4336 { 4337 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, 4338 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, 4339 { NULL, 0, 0, 0, 0 } 4340 }; 4341 4342 static bfd_boolean 4343 elf64_ia64_object_p (bfd *abfd) 4344 { 4345 asection *sec; 4346 asection *group, *unwi, *unw; 4347 flagword flags; 4348 const char *name; 4349 char *unwi_name, *unw_name; 4350 bfd_size_type amt; 4351 4352 if (abfd->flags & DYNAMIC) 4353 return TRUE; 4354 4355 /* Flags for fake group section. */ 4356 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE 4357 | SEC_EXCLUDE); 4358 4359 /* We add a fake section group for each .gnu.linkonce.t.* section, 4360 which isn't in a section group, and its unwind sections. */ 4361 for (sec = abfd->sections; sec != NULL; sec = sec->next) 4362 { 4363 if (elf_sec_group (sec) == NULL 4364 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) 4365 == (SEC_LINK_ONCE | SEC_CODE)) 4366 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) 4367 { 4368 name = sec->name + 16; 4369 4370 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); 4371 unwi_name = bfd_alloc (abfd, amt); 4372 if (!unwi_name) 4373 return FALSE; 4374 4375 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); 4376 unwi = bfd_get_section_by_name (abfd, unwi_name); 4377 4378 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); 4379 unw_name = bfd_alloc (abfd, amt); 4380 if (!unw_name) 4381 return FALSE; 4382 4383 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); 4384 unw = bfd_get_section_by_name (abfd, unw_name); 4385 4386 /* We need to create a fake group section for it and its 4387 unwind sections. */ 4388 group = bfd_make_section_anyway_with_flags (abfd, name, 4389 flags); 4390 if (group == NULL) 4391 return FALSE; 4392 4393 /* Move the fake group section to the beginning. */ 4394 bfd_section_list_remove (abfd, group); 4395 bfd_section_list_prepend (abfd, group); 4396 4397 elf_next_in_group (group) = sec; 4398 4399 elf_group_name (sec) = name; 4400 elf_next_in_group (sec) = sec; 4401 elf_sec_group (sec) = group; 4402 4403 if (unwi) 4404 { 4405 elf_group_name (unwi) = name; 4406 elf_next_in_group (unwi) = sec; 4407 elf_next_in_group (sec) = unwi; 4408 elf_sec_group (unwi) = group; 4409 } 4410 4411 if (unw) 4412 { 4413 elf_group_name (unw) = name; 4414 if (unwi) 4415 { 4416 elf_next_in_group (unw) = elf_next_in_group (unwi); 4417 elf_next_in_group (unwi) = unw; 4418 } 4419 else 4420 { 4421 elf_next_in_group (unw) = sec; 4422 elf_next_in_group (sec) = unw; 4423 } 4424 elf_sec_group (unw) = group; 4425 } 4426 4427 /* Fake SHT_GROUP section header. */ 4428 elf_section_data (group)->this_hdr.bfd_section = group; 4429 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; 4430 } 4431 } 4432 return TRUE; 4433 } 4434 4435 /* Handle an IA-64 specific section when reading an object file. This 4436 is called when bfd_section_from_shdr finds a section with an unknown 4437 type. */ 4438 4439 static bfd_boolean 4440 elf64_vms_section_from_shdr (bfd *abfd, 4441 Elf_Internal_Shdr *hdr, 4442 const char *name, 4443 int shindex) 4444 { 4445 flagword secflags = 0; 4446 4447 switch (hdr->sh_type) 4448 { 4449 case SHT_IA_64_VMS_TRACE: 4450 case SHT_IA_64_VMS_DEBUG: 4451 case SHT_IA_64_VMS_DEBUG_STR: 4452 secflags = SEC_DEBUGGING; 4453 break; 4454 4455 case SHT_IA_64_UNWIND: 4456 case SHT_IA_64_HP_OPT_ANOT: 4457 break; 4458 4459 case SHT_IA_64_EXT: 4460 if (strcmp (name, ELF_STRING_ia64_archext) != 0) 4461 return FALSE; 4462 break; 4463 4464 default: 4465 return FALSE; 4466 } 4467 4468 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) 4469 return FALSE; 4470 4471 if (secflags != 0) 4472 { 4473 asection *newsect = hdr->bfd_section; 4474 4475 if (! bfd_set_section_flags 4476 (abfd, newsect, bfd_get_section_flags (abfd, newsect) | secflags)) 4477 return FALSE; 4478 } 4479 4480 return TRUE; 4481 } 4482 4483 static bfd_boolean 4484 elf64_vms_object_p (bfd *abfd) 4485 { 4486 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); 4487 Elf_Internal_Phdr *i_phdr = elf_tdata (abfd)->phdr; 4488 unsigned int i; 4489 unsigned int num_text = 0; 4490 unsigned int num_data = 0; 4491 unsigned int num_rodata = 0; 4492 char name[16]; 4493 4494 if (!elf64_ia64_object_p (abfd)) 4495 return FALSE; 4496 4497 /* Many VMS compilers do not generate sections for the corresponding 4498 segment. This is boring as binutils tools won't be able to disassemble 4499 the code. So we simply create all the missing sections. */ 4500 for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) 4501 { 4502 /* Is there a section for this segment? */ 4503 bfd_vma base_vma = i_phdr->p_vaddr; 4504 bfd_vma limit_vma = base_vma + i_phdr->p_filesz; 4505 4506 if (i_phdr->p_type != PT_LOAD) 4507 continue; 4508 4509 /* We need to cover from base_vms to limit_vma. */ 4510 again: 4511 while (base_vma < limit_vma) 4512 { 4513 bfd_vma next_vma = limit_vma; 4514 asection *nsec; 4515 asection *sec; 4516 flagword flags; 4517 char *nname = NULL; 4518 4519 /* Find a section covering [base_vma;limit_vma) */ 4520 for (sec = abfd->sections; sec != NULL; sec = sec->next) 4521 { 4522 /* Skip uninteresting sections (either not in memory or 4523 below base_vma. */ 4524 if ((sec->flags & (SEC_ALLOC | SEC_LOAD)) == 0 4525 || sec->vma + sec->size <= base_vma) 4526 continue; 4527 if (sec->vma <= base_vma) 4528 { 4529 /* This section covers (maybe partially) the beginning 4530 of the range. */ 4531 base_vma = sec->vma + sec->size; 4532 goto again; 4533 } 4534 if (sec->vma < next_vma) 4535 { 4536 /* This section partially covers the end of the range. 4537 Used to compute the size of the hole. */ 4538 next_vma = sec->vma; 4539 } 4540 } 4541 4542 /* No section covering [base_vma; next_vma). Create a fake one. */ 4543 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; 4544 if (i_phdr->p_flags & PF_X) 4545 { 4546 flags |= SEC_CODE; 4547 if (num_text++ == 0) 4548 nname = ".text"; 4549 else 4550 sprintf (name, ".text$%u", num_text); 4551 } 4552 else if ((i_phdr->p_flags & (PF_R | PF_W)) == PF_R) 4553 { 4554 flags |= SEC_READONLY; 4555 sprintf (name, ".rodata$%u", num_rodata++); 4556 } 4557 else 4558 { 4559 flags |= SEC_DATA; 4560 sprintf (name, ".data$%u", num_data++); 4561 } 4562 4563 /* Allocate name. */ 4564 if (nname == NULL) 4565 { 4566 size_t name_len = strlen (name) + 1; 4567 nname = bfd_alloc (abfd, name_len); 4568 if (nname == NULL) 4569 return FALSE; 4570 memcpy (nname, name, name_len); 4571 } 4572 4573 /* Create and fill new section. */ 4574 nsec = bfd_make_section_anyway_with_flags (abfd, nname, flags); 4575 if (nsec == NULL) 4576 return FALSE; 4577 nsec->vma = base_vma; 4578 nsec->size = next_vma - base_vma; 4579 nsec->filepos = i_phdr->p_offset + (base_vma - i_phdr->p_vaddr); 4580 4581 base_vma = next_vma; 4582 } 4583 } 4584 return TRUE; 4585 } 4586 4587 static void 4588 elf64_vms_post_process_headers (bfd *abfd, 4589 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4590 { 4591 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); 4592 4593 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_OPENVMS; 4594 i_ehdrp->e_ident[EI_ABIVERSION] = 2; 4595 } 4596 4597 static bfd_boolean 4598 elf64_vms_section_processing (bfd *abfd ATTRIBUTE_UNUSED, 4599 Elf_Internal_Shdr *hdr) 4600 { 4601 if (hdr->bfd_section != NULL) 4602 { 4603 const char *name = bfd_get_section_name (abfd, hdr->bfd_section); 4604 4605 if (strcmp (name, ".text") == 0) 4606 hdr->sh_flags |= SHF_IA_64_VMS_SHARED; 4607 else if ((strcmp (name, ".debug") == 0) 4608 || (strcmp (name, ".debug_abbrev") == 0) 4609 || (strcmp (name, ".debug_aranges") == 0) 4610 || (strcmp (name, ".debug_frame") == 0) 4611 || (strcmp (name, ".debug_info") == 0) 4612 || (strcmp (name, ".debug_loc") == 0) 4613 || (strcmp (name, ".debug_macinfo") == 0) 4614 || (strcmp (name, ".debug_pubnames") == 0) 4615 || (strcmp (name, ".debug_pubtypes") == 0)) 4616 hdr->sh_type = SHT_IA_64_VMS_DEBUG; 4617 else if ((strcmp (name, ".debug_line") == 0) 4618 || (strcmp (name, ".debug_ranges") == 0) 4619 || (strcmp (name, ".trace_info") == 0) 4620 || (strcmp (name, ".trace_abbrev") == 0) 4621 || (strcmp (name, ".trace_aranges") == 0)) 4622 hdr->sh_type = SHT_IA_64_VMS_TRACE; 4623 else if (strcmp (name, ".debug_str") == 0) 4624 hdr->sh_type = SHT_IA_64_VMS_DEBUG_STR; 4625 } 4626 4627 return TRUE; 4628 } 4629 4630 /* The final processing done just before writing out a VMS IA-64 ELF 4631 object file. */ 4632 4633 static void 4634 elf64_vms_final_write_processing (bfd *abfd, 4635 bfd_boolean linker ATTRIBUTE_UNUSED) 4636 { 4637 Elf_Internal_Shdr *hdr; 4638 asection *s; 4639 int unwind_info_sect_idx = 0; 4640 4641 for (s = abfd->sections; s; s = s->next) 4642 { 4643 hdr = &elf_section_data (s)->this_hdr; 4644 4645 if (strcmp (bfd_get_section_name (abfd, hdr->bfd_section), 4646 ".IA_64.unwind_info") == 0) 4647 unwind_info_sect_idx = elf_section_data (s)->this_idx; 4648 4649 switch (hdr->sh_type) 4650 { 4651 case SHT_IA_64_UNWIND: 4652 /* VMS requires sh_info to point to the unwind info section. */ 4653 hdr->sh_info = unwind_info_sect_idx; 4654 break; 4655 } 4656 } 4657 4658 if (! elf_flags_init (abfd)) 4659 { 4660 unsigned long flags = 0; 4661 4662 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) 4663 flags |= EF_IA_64_BE; 4664 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) 4665 flags |= EF_IA_64_ABI64; 4666 4667 elf_elfheader (abfd)->e_flags = flags; 4668 elf_flags_init (abfd) = TRUE; 4669 } 4670 } 4671 4672 static bfd_boolean 4673 elf64_vms_write_shdrs_and_ehdr (bfd *abfd) 4674 { 4675 unsigned char needed_count[8]; 4676 4677 if (!bfd_elf64_write_shdrs_and_ehdr (abfd)) 4678 return FALSE; 4679 4680 bfd_putl64 (elf_ia64_vms_tdata (abfd)->needed_count, needed_count); 4681 4682 if (bfd_seek (abfd, sizeof (Elf64_External_Ehdr), SEEK_SET) != 0 4683 || bfd_bwrite (needed_count, 8, abfd) != 8) 4684 return FALSE; 4685 4686 return TRUE; 4687 } 4688 4689 static bfd_boolean 4690 elf64_vms_close_and_cleanup (bfd *abfd) 4691 { 4692 if (bfd_get_format (abfd) == bfd_object) 4693 { 4694 long isize; 4695 4696 /* Pad to 8 byte boundary for IPF/VMS. */ 4697 isize = bfd_get_size (abfd); 4698 if ((isize & 7) != 0) 4699 { 4700 int ishort = 8 - (isize & 7); 4701 bfd_uint64_t pad = 0; 4702 4703 bfd_seek (abfd, isize, SEEK_SET); 4704 bfd_bwrite (&pad, ishort, abfd); 4705 } 4706 } 4707 4708 return _bfd_elf_close_and_cleanup (abfd); 4709 } 4710 4711 /* Add symbols from an ELF object file to the linker hash table. */ 4712 4713 static bfd_boolean 4714 elf64_vms_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) 4715 { 4716 Elf_Internal_Shdr *hdr; 4717 bfd_size_type symcount; 4718 bfd_size_type extsymcount; 4719 bfd_size_type extsymoff; 4720 struct elf_link_hash_entry **sym_hash; 4721 bfd_boolean dynamic; 4722 Elf_Internal_Sym *isymbuf = NULL; 4723 Elf_Internal_Sym *isym; 4724 Elf_Internal_Sym *isymend; 4725 const struct elf_backend_data *bed; 4726 struct elf_link_hash_table *htab; 4727 bfd_size_type amt; 4728 4729 htab = elf_hash_table (info); 4730 bed = get_elf_backend_data (abfd); 4731 4732 if ((abfd->flags & DYNAMIC) == 0) 4733 dynamic = FALSE; 4734 else 4735 { 4736 dynamic = TRUE; 4737 4738 /* You can't use -r against a dynamic object. Also, there's no 4739 hope of using a dynamic object which does not exactly match 4740 the format of the output file. */ 4741 if (bfd_link_relocatable (info) 4742 || !is_elf_hash_table (htab) 4743 || info->output_bfd->xvec != abfd->xvec) 4744 { 4745 if (bfd_link_relocatable (info)) 4746 bfd_set_error (bfd_error_invalid_operation); 4747 else 4748 bfd_set_error (bfd_error_wrong_format); 4749 goto error_return; 4750 } 4751 } 4752 4753 if (! dynamic) 4754 { 4755 /* If we are creating a shared library, create all the dynamic 4756 sections immediately. We need to attach them to something, 4757 so we attach them to this BFD, provided it is the right 4758 format. FIXME: If there are no input BFD's of the same 4759 format as the output, we can't make a shared library. */ 4760 if (bfd_link_pic (info) 4761 && is_elf_hash_table (htab) 4762 && info->output_bfd->xvec == abfd->xvec 4763 && !htab->dynamic_sections_created) 4764 { 4765 if (! elf64_ia64_create_dynamic_sections (abfd, info)) 4766 goto error_return; 4767 } 4768 } 4769 else if (!is_elf_hash_table (htab)) 4770 goto error_return; 4771 else 4772 { 4773 asection *s; 4774 bfd_byte *dynbuf; 4775 bfd_byte *extdyn; 4776 4777 /* ld --just-symbols and dynamic objects don't mix very well. 4778 ld shouldn't allow it. */ 4779 if ((s = abfd->sections) != NULL 4780 && s->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) 4781 abort (); 4782 4783 /* Be sure there are dynamic sections. */ 4784 if (! elf64_ia64_create_dynamic_sections (htab->dynobj, info)) 4785 goto error_return; 4786 4787 s = bfd_get_section_by_name (abfd, ".dynamic"); 4788 if (s == NULL) 4789 { 4790 /* VMS libraries do not have dynamic sections. Create one from 4791 the segment. */ 4792 Elf_Internal_Phdr *phdr; 4793 unsigned int i, phnum; 4794 4795 phdr = elf_tdata (abfd)->phdr; 4796 if (phdr == NULL) 4797 goto error_return; 4798 phnum = elf_elfheader (abfd)->e_phnum; 4799 for (i = 0; i < phnum; phdr++) 4800 if (phdr->p_type == PT_DYNAMIC) 4801 { 4802 s = bfd_make_section (abfd, ".dynamic"); 4803 if (s == NULL) 4804 goto error_return; 4805 s->vma = phdr->p_vaddr; 4806 s->lma = phdr->p_paddr; 4807 s->size = phdr->p_filesz; 4808 s->filepos = phdr->p_offset; 4809 s->flags |= SEC_HAS_CONTENTS; 4810 s->alignment_power = bfd_log2 (phdr->p_align); 4811 break; 4812 } 4813 if (s == NULL) 4814 goto error_return; 4815 } 4816 4817 /* Extract IDENT. */ 4818 if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) 4819 { 4820 error_free_dyn: 4821 free (dynbuf); 4822 goto error_return; 4823 } 4824 4825 for (extdyn = dynbuf; 4826 extdyn < dynbuf + s->size; 4827 extdyn += bed->s->sizeof_dyn) 4828 { 4829 Elf_Internal_Dyn dyn; 4830 4831 bed->s->swap_dyn_in (abfd, extdyn, &dyn); 4832 if (dyn.d_tag == DT_IA_64_VMS_IDENT) 4833 { 4834 bfd_uint64_t tagv = dyn.d_un.d_val; 4835 elf_ia64_vms_ident (abfd) = tagv; 4836 break; 4837 } 4838 } 4839 if (extdyn >= dynbuf + s->size) 4840 { 4841 /* Ident not found. */ 4842 goto error_free_dyn; 4843 } 4844 free (dynbuf); 4845 4846 /* We do not want to include any of the sections in a dynamic 4847 object in the output file. We hack by simply clobbering the 4848 list of sections in the BFD. This could be handled more 4849 cleanly by, say, a new section flag; the existing 4850 SEC_NEVER_LOAD flag is not the one we want, because that one 4851 still implies that the section takes up space in the output 4852 file. */ 4853 bfd_section_list_clear (abfd); 4854 4855 /* FIXME: should we detect if this library is already included ? 4856 This should be harmless and shouldn't happen in practice. */ 4857 } 4858 4859 hdr = &elf_tdata (abfd)->symtab_hdr; 4860 symcount = hdr->sh_size / bed->s->sizeof_sym; 4861 4862 /* The sh_info field of the symtab header tells us where the 4863 external symbols start. We don't care about the local symbols at 4864 this point. */ 4865 extsymcount = symcount - hdr->sh_info; 4866 extsymoff = hdr->sh_info; 4867 4868 sym_hash = NULL; 4869 if (extsymcount != 0) 4870 { 4871 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff, 4872 NULL, NULL, NULL); 4873 if (isymbuf == NULL) 4874 goto error_return; 4875 4876 /* We store a pointer to the hash table entry for each external 4877 symbol. */ 4878 amt = extsymcount * sizeof (struct elf_link_hash_entry *); 4879 sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt); 4880 if (sym_hash == NULL) 4881 goto error_free_sym; 4882 elf_sym_hashes (abfd) = sym_hash; 4883 } 4884 4885 for (isym = isymbuf, isymend = isymbuf + extsymcount; 4886 isym < isymend; 4887 isym++, sym_hash++) 4888 { 4889 int bind; 4890 bfd_vma value; 4891 asection *sec, *new_sec; 4892 flagword flags; 4893 const char *name; 4894 struct elf_link_hash_entry *h; 4895 bfd_boolean definition; 4896 bfd_boolean size_change_ok; 4897 bfd_boolean type_change_ok; 4898 bfd_boolean common; 4899 unsigned int old_alignment; 4900 bfd *old_bfd; 4901 4902 flags = BSF_NO_FLAGS; 4903 sec = NULL; 4904 value = isym->st_value; 4905 *sym_hash = NULL; 4906 common = bed->common_definition (isym); 4907 4908 bind = ELF_ST_BIND (isym->st_info); 4909 switch (bind) 4910 { 4911 case STB_LOCAL: 4912 /* This should be impossible, since ELF requires that all 4913 global symbols follow all local symbols, and that sh_info 4914 point to the first global symbol. Unfortunately, Irix 5 4915 screws this up. */ 4916 continue; 4917 4918 case STB_GLOBAL: 4919 if (isym->st_shndx != SHN_UNDEF && !common) 4920 flags = BSF_GLOBAL; 4921 break; 4922 4923 case STB_WEAK: 4924 flags = BSF_WEAK; 4925 break; 4926 4927 case STB_GNU_UNIQUE: 4928 flags = BSF_GNU_UNIQUE; 4929 break; 4930 4931 default: 4932 /* Leave it up to the processor backend. */ 4933 break; 4934 } 4935 4936 if (isym->st_shndx == SHN_UNDEF) 4937 sec = bfd_und_section_ptr; 4938 else if (isym->st_shndx == SHN_ABS) 4939 sec = bfd_abs_section_ptr; 4940 else if (isym->st_shndx == SHN_COMMON) 4941 { 4942 sec = bfd_com_section_ptr; 4943 /* What ELF calls the size we call the value. What ELF 4944 calls the value we call the alignment. */ 4945 value = isym->st_size; 4946 } 4947 else 4948 { 4949 sec = bfd_section_from_elf_index (abfd, isym->st_shndx); 4950 if (sec == NULL) 4951 sec = bfd_abs_section_ptr; 4952 else if (sec->kept_section) 4953 { 4954 /* Symbols from discarded section are undefined. We keep 4955 its visibility. */ 4956 sec = bfd_und_section_ptr; 4957 isym->st_shndx = SHN_UNDEF; 4958 } 4959 else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) 4960 value -= sec->vma; 4961 } 4962 4963 name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, 4964 isym->st_name); 4965 if (name == NULL) 4966 goto error_free_vers; 4967 4968 if (bed->elf_add_symbol_hook) 4969 { 4970 if (! (*bed->elf_add_symbol_hook) (abfd, info, isym, &name, &flags, 4971 &sec, &value)) 4972 goto error_free_vers; 4973 4974 /* The hook function sets the name to NULL if this symbol 4975 should be skipped for some reason. */ 4976 if (name == NULL) 4977 continue; 4978 } 4979 4980 /* Sanity check that all possibilities were handled. */ 4981 if (sec == NULL) 4982 { 4983 bfd_set_error (bfd_error_bad_value); 4984 goto error_free_vers; 4985 } 4986 4987 if (bfd_is_und_section (sec) 4988 || bfd_is_com_section (sec)) 4989 definition = FALSE; 4990 else 4991 definition = TRUE; 4992 4993 size_change_ok = FALSE; 4994 type_change_ok = bed->type_change_ok; 4995 old_alignment = 0; 4996 old_bfd = NULL; 4997 new_sec = sec; 4998 4999 if (! bfd_is_und_section (sec)) 5000 h = elf_link_hash_lookup (htab, name, TRUE, FALSE, FALSE); 5001 else 5002 h = ((struct elf_link_hash_entry *) bfd_wrapped_link_hash_lookup 5003 (abfd, info, name, TRUE, FALSE, FALSE)); 5004 if (h == NULL) 5005 goto error_free_sym; 5006 5007 *sym_hash = h; 5008 5009 if (is_elf_hash_table (htab)) 5010 { 5011 while (h->root.type == bfd_link_hash_indirect 5012 || h->root.type == bfd_link_hash_warning) 5013 h = (struct elf_link_hash_entry *) h->root.u.i.link; 5014 5015 /* Remember the old alignment if this is a common symbol, so 5016 that we don't reduce the alignment later on. We can't 5017 check later, because _bfd_generic_link_add_one_symbol 5018 will set a default for the alignment which we want to 5019 override. We also remember the old bfd where the existing 5020 definition comes from. */ 5021 switch (h->root.type) 5022 { 5023 default: 5024 break; 5025 5026 case bfd_link_hash_defined: 5027 if (abfd->selective_search) 5028 continue; 5029 /* Fall-through. */ 5030 case bfd_link_hash_defweak: 5031 old_bfd = h->root.u.def.section->owner; 5032 break; 5033 5034 case bfd_link_hash_common: 5035 old_bfd = h->root.u.c.p->section->owner; 5036 old_alignment = h->root.u.c.p->alignment_power; 5037 break; 5038 } 5039 } 5040 5041 if (! (_bfd_generic_link_add_one_symbol 5042 (info, abfd, name, flags, sec, value, NULL, FALSE, bed->collect, 5043 (struct bfd_link_hash_entry **) sym_hash))) 5044 goto error_free_vers; 5045 5046 h = *sym_hash; 5047 while (h->root.type == bfd_link_hash_indirect 5048 || h->root.type == bfd_link_hash_warning) 5049 h = (struct elf_link_hash_entry *) h->root.u.i.link; 5050 5051 *sym_hash = h; 5052 if (definition) 5053 h->unique_global = (flags & BSF_GNU_UNIQUE) != 0; 5054 5055 /* Set the alignment of a common symbol. */ 5056 if ((common || bfd_is_com_section (sec)) 5057 && h->root.type == bfd_link_hash_common) 5058 { 5059 unsigned int align; 5060 5061 if (common) 5062 align = bfd_log2 (isym->st_value); 5063 else 5064 { 5065 /* The new symbol is a common symbol in a shared object. 5066 We need to get the alignment from the section. */ 5067 align = new_sec->alignment_power; 5068 } 5069 if (align > old_alignment 5070 /* Permit an alignment power of zero if an alignment of one 5071 is specified and no other alignments have been specified. */ 5072 || (isym->st_value == 1 && old_alignment == 0)) 5073 h->root.u.c.p->alignment_power = align; 5074 else 5075 h->root.u.c.p->alignment_power = old_alignment; 5076 } 5077 5078 if (is_elf_hash_table (htab)) 5079 { 5080 /* Check the alignment when a common symbol is involved. This 5081 can change when a common symbol is overridden by a normal 5082 definition or a common symbol is ignored due to the old 5083 normal definition. We need to make sure the maximum 5084 alignment is maintained. */ 5085 if ((old_alignment || common) 5086 && h->root.type != bfd_link_hash_common) 5087 { 5088 unsigned int common_align; 5089 unsigned int normal_align; 5090 unsigned int symbol_align; 5091 bfd *normal_bfd; 5092 bfd *common_bfd; 5093 5094 symbol_align = ffs (h->root.u.def.value) - 1; 5095 if (h->root.u.def.section->owner != NULL 5096 && (h->root.u.def.section->owner->flags & DYNAMIC) == 0) 5097 { 5098 normal_align = h->root.u.def.section->alignment_power; 5099 if (normal_align > symbol_align) 5100 normal_align = symbol_align; 5101 } 5102 else 5103 normal_align = symbol_align; 5104 5105 if (old_alignment) 5106 { 5107 common_align = old_alignment; 5108 common_bfd = old_bfd; 5109 normal_bfd = abfd; 5110 } 5111 else 5112 { 5113 common_align = bfd_log2 (isym->st_value); 5114 common_bfd = abfd; 5115 normal_bfd = old_bfd; 5116 } 5117 5118 if (normal_align < common_align) 5119 { 5120 /* PR binutils/2735 */ 5121 if (normal_bfd == NULL) 5122 (*_bfd_error_handler) 5123 (_("Warning: alignment %u of common symbol `%s' in %B" 5124 " is greater than the alignment (%u) of its section %A"), 5125 common_bfd, h->root.u.def.section, 5126 1 << common_align, name, 1 << normal_align); 5127 else 5128 (*_bfd_error_handler) 5129 (_("Warning: alignment %u of symbol `%s' in %B" 5130 " is smaller than %u in %B"), 5131 normal_bfd, common_bfd, 5132 1 << normal_align, name, 1 << common_align); 5133 } 5134 } 5135 5136 /* Remember the symbol size if it isn't undefined. */ 5137 if ((isym->st_size != 0 && isym->st_shndx != SHN_UNDEF) 5138 && (definition || h->size == 0)) 5139 { 5140 if (h->size != 0 5141 && h->size != isym->st_size 5142 && ! size_change_ok) 5143 (*_bfd_error_handler) 5144 (_("Warning: size of symbol `%s' changed" 5145 " from %lu in %B to %lu in %B"), 5146 old_bfd, abfd, 5147 name, (unsigned long) h->size, 5148 (unsigned long) isym->st_size); 5149 5150 h->size = isym->st_size; 5151 } 5152 5153 /* If this is a common symbol, then we always want H->SIZE 5154 to be the size of the common symbol. The code just above 5155 won't fix the size if a common symbol becomes larger. We 5156 don't warn about a size change here, because that is 5157 covered by --warn-common. Allow changed between different 5158 function types. */ 5159 if (h->root.type == bfd_link_hash_common) 5160 h->size = h->root.u.c.size; 5161 5162 if (ELF_ST_TYPE (isym->st_info) != STT_NOTYPE 5163 && (definition || h->type == STT_NOTYPE)) 5164 { 5165 unsigned int type = ELF_ST_TYPE (isym->st_info); 5166 5167 if (h->type != type) 5168 { 5169 if (h->type != STT_NOTYPE && ! type_change_ok) 5170 (*_bfd_error_handler) 5171 (_("Warning: type of symbol `%s' changed" 5172 " from %d to %d in %B"), 5173 abfd, name, h->type, type); 5174 5175 h->type = type; 5176 } 5177 } 5178 5179 /* Set a flag in the hash table entry indicating the type of 5180 reference or definition we just found. Keep a count of 5181 the number of dynamic symbols we find. A dynamic symbol 5182 is one which is referenced or defined by both a regular 5183 object and a shared object. */ 5184 if (! dynamic) 5185 { 5186 if (! definition) 5187 { 5188 h->ref_regular = 1; 5189 if (bind != STB_WEAK) 5190 h->ref_regular_nonweak = 1; 5191 } 5192 else 5193 { 5194 BFD_ASSERT (!h->def_dynamic); 5195 h->def_regular = 1; 5196 } 5197 } 5198 else 5199 { 5200 BFD_ASSERT (definition); 5201 h->def_dynamic = 1; 5202 h->dynindx = -2; 5203 ((struct elf64_ia64_link_hash_entry *)h)->shl = abfd; 5204 } 5205 } 5206 } 5207 5208 if (isymbuf != NULL) 5209 { 5210 free (isymbuf); 5211 isymbuf = NULL; 5212 } 5213 5214 /* If this object is the same format as the output object, and it is 5215 not a shared library, then let the backend look through the 5216 relocs. 5217 5218 This is required to build global offset table entries and to 5219 arrange for dynamic relocs. It is not required for the 5220 particular common case of linking non PIC code, even when linking 5221 against shared libraries, but unfortunately there is no way of 5222 knowing whether an object file has been compiled PIC or not. 5223 Looking through the relocs is not particularly time consuming. 5224 The problem is that we must either (1) keep the relocs in memory, 5225 which causes the linker to require additional runtime memory or 5226 (2) read the relocs twice from the input file, which wastes time. 5227 This would be a good case for using mmap. 5228 5229 I have no idea how to handle linking PIC code into a file of a 5230 different format. It probably can't be done. */ 5231 if (! dynamic 5232 && is_elf_hash_table (htab) 5233 && bed->check_relocs != NULL 5234 && (*bed->relocs_compatible) (abfd->xvec, info->output_bfd->xvec)) 5235 { 5236 asection *o; 5237 5238 for (o = abfd->sections; o != NULL; o = o->next) 5239 { 5240 Elf_Internal_Rela *internal_relocs; 5241 bfd_boolean ok; 5242 5243 if ((o->flags & SEC_RELOC) == 0 5244 || o->reloc_count == 0 5245 || ((info->strip == strip_all || info->strip == strip_debugger) 5246 && (o->flags & SEC_DEBUGGING) != 0) 5247 || bfd_is_abs_section (o->output_section)) 5248 continue; 5249 5250 internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, 5251 info->keep_memory); 5252 if (internal_relocs == NULL) 5253 goto error_return; 5254 5255 ok = (*bed->check_relocs) (abfd, info, o, internal_relocs); 5256 5257 if (elf_section_data (o)->relocs != internal_relocs) 5258 free (internal_relocs); 5259 5260 if (! ok) 5261 goto error_return; 5262 } 5263 } 5264 5265 return TRUE; 5266 5267 error_free_vers: 5268 error_free_sym: 5269 if (isymbuf != NULL) 5270 free (isymbuf); 5271 error_return: 5272 return FALSE; 5273 } 5274 5275 static bfd_boolean 5276 elf64_vms_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info) 5277 { 5278 int pass; 5279 struct bfd_link_hash_entry **pundef; 5280 struct bfd_link_hash_entry **next_pundef; 5281 5282 /* We only accept VMS libraries. */ 5283 if (info->output_bfd->xvec != abfd->xvec) 5284 { 5285 bfd_set_error (bfd_error_wrong_format); 5286 return FALSE; 5287 } 5288 5289 /* The archive_pass field in the archive itself is used to 5290 initialize PASS, since we may search the same archive multiple 5291 times. */ 5292 pass = ++abfd->archive_pass; 5293 5294 /* Look through the list of undefined symbols. */ 5295 for (pundef = &info->hash->undefs; *pundef != NULL; pundef = next_pundef) 5296 { 5297 struct bfd_link_hash_entry *h; 5298 symindex symidx; 5299 bfd *element; 5300 bfd *orig_element; 5301 5302 h = *pundef; 5303 next_pundef = &(*pundef)->u.undef.next; 5304 5305 /* When a symbol is defined, it is not necessarily removed from 5306 the list. */ 5307 if (h->type != bfd_link_hash_undefined 5308 && h->type != bfd_link_hash_common) 5309 { 5310 /* Remove this entry from the list, for general cleanliness 5311 and because we are going to look through the list again 5312 if we search any more libraries. We can't remove the 5313 entry if it is the tail, because that would lose any 5314 entries we add to the list later on. */ 5315 if (*pundef != info->hash->undefs_tail) 5316 { 5317 *pundef = *next_pundef; 5318 next_pundef = pundef; 5319 } 5320 continue; 5321 } 5322 5323 /* Look for this symbol in the archive hash table. */ 5324 symidx = _bfd_vms_lib_find_symbol (abfd, h->root.string); 5325 if (symidx == BFD_NO_MORE_SYMBOLS) 5326 { 5327 /* Nothing in this slot. */ 5328 continue; 5329 } 5330 5331 element = bfd_get_elt_at_index (abfd, symidx); 5332 if (element == NULL) 5333 return FALSE; 5334 5335 if (element->archive_pass == -1 || element->archive_pass == pass) 5336 { 5337 /* Next symbol if this archive is wrong or already handled. */ 5338 continue; 5339 } 5340 5341 orig_element = element; 5342 if (bfd_is_thin_archive (abfd)) 5343 { 5344 element = _bfd_vms_lib_get_imagelib_file (element); 5345 if (element == NULL || !bfd_check_format (element, bfd_object)) 5346 { 5347 orig_element->archive_pass = -1; 5348 return FALSE; 5349 } 5350 } 5351 else if (! bfd_check_format (element, bfd_object)) 5352 { 5353 element->archive_pass = -1; 5354 return FALSE; 5355 } 5356 5357 /* Unlike the generic linker, we know that this element provides 5358 a definition for an undefined symbol and we know that we want 5359 to include it. We don't need to check anything. */ 5360 if (! (*info->callbacks->add_archive_element) (info, element, 5361 h->root.string, &element)) 5362 continue; 5363 if (! elf64_vms_link_add_object_symbols (element, info)) 5364 return FALSE; 5365 5366 orig_element->archive_pass = pass; 5367 } 5368 5369 return TRUE; 5370 } 5371 5372 static bfd_boolean 5373 elf64_vms_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) 5374 { 5375 switch (bfd_get_format (abfd)) 5376 { 5377 case bfd_object: 5378 return elf64_vms_link_add_object_symbols (abfd, info); 5379 break; 5380 case bfd_archive: 5381 return elf64_vms_link_add_archive_symbols (abfd, info); 5382 break; 5383 default: 5384 bfd_set_error (bfd_error_wrong_format); 5385 return FALSE; 5386 } 5387 } 5388 5389 static bfd_boolean 5390 elf64_ia64_vms_mkobject (bfd *abfd) 5391 { 5392 return bfd_elf_allocate_object 5393 (abfd, sizeof (struct elf64_ia64_vms_obj_tdata), IA64_ELF_DATA); 5394 } 5395 5396 5397 /* Size-dependent data and functions. */ 5398 static const struct elf_size_info elf64_ia64_vms_size_info = { 5399 sizeof (Elf64_External_VMS_Ehdr), 5400 sizeof (Elf64_External_Phdr), 5401 sizeof (Elf64_External_Shdr), 5402 sizeof (Elf64_External_Rel), 5403 sizeof (Elf64_External_Rela), 5404 sizeof (Elf64_External_Sym), 5405 sizeof (Elf64_External_Dyn), 5406 sizeof (Elf_External_Note), 5407 4, 5408 1, 5409 64, 3, /* ARCH_SIZE, LOG_FILE_ALIGN */ 5410 ELFCLASS64, EV_CURRENT, 5411 bfd_elf64_write_out_phdrs, 5412 elf64_vms_write_shdrs_and_ehdr, 5413 bfd_elf64_checksum_contents, 5414 bfd_elf64_write_relocs, 5415 bfd_elf64_swap_symbol_in, 5416 bfd_elf64_swap_symbol_out, 5417 bfd_elf64_slurp_reloc_table, 5418 bfd_elf64_slurp_symbol_table, 5419 bfd_elf64_swap_dyn_in, 5420 bfd_elf64_swap_dyn_out, 5421 bfd_elf64_swap_reloc_in, 5422 bfd_elf64_swap_reloc_out, 5423 bfd_elf64_swap_reloca_in, 5424 bfd_elf64_swap_reloca_out 5425 }; 5426 5427 #define ELF_ARCH bfd_arch_ia64 5428 #define ELF_MACHINE_CODE EM_IA_64 5429 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ 5430 #define ELF_COMMONPAGESIZE 0x200 /* 16KB */ 5431 5432 #define elf_backend_section_from_shdr \ 5433 elf64_ia64_section_from_shdr 5434 #define elf_backend_section_flags \ 5435 elf64_ia64_section_flags 5436 #define elf_backend_fake_sections \ 5437 elf64_ia64_fake_sections 5438 #define elf_backend_final_write_processing \ 5439 elf64_ia64_final_write_processing 5440 #define elf_backend_add_symbol_hook \ 5441 elf64_ia64_add_symbol_hook 5442 #define elf_info_to_howto \ 5443 elf64_ia64_info_to_howto 5444 5445 #define bfd_elf64_bfd_reloc_type_lookup \ 5446 ia64_elf_reloc_type_lookup 5447 #define bfd_elf64_bfd_reloc_name_lookup \ 5448 ia64_elf_reloc_name_lookup 5449 #define bfd_elf64_bfd_is_local_label_name \ 5450 elf64_ia64_is_local_label_name 5451 #define bfd_elf64_bfd_relax_section \ 5452 elf64_ia64_relax_section 5453 5454 #define elf_backend_object_p \ 5455 elf64_ia64_object_p 5456 5457 /* Stuff for the BFD linker: */ 5458 #define bfd_elf64_bfd_link_hash_table_create \ 5459 elf64_ia64_hash_table_create 5460 #define elf_backend_create_dynamic_sections \ 5461 elf64_ia64_create_dynamic_sections 5462 #define elf_backend_check_relocs \ 5463 elf64_ia64_check_relocs 5464 #define elf_backend_adjust_dynamic_symbol \ 5465 elf64_ia64_adjust_dynamic_symbol 5466 #define elf_backend_size_dynamic_sections \ 5467 elf64_ia64_size_dynamic_sections 5468 #define elf_backend_omit_section_dynsym \ 5469 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 5470 #define elf_backend_relocate_section \ 5471 elf64_ia64_relocate_section 5472 #define elf_backend_finish_dynamic_symbol \ 5473 elf64_ia64_finish_dynamic_symbol 5474 #define elf_backend_finish_dynamic_sections \ 5475 elf64_ia64_finish_dynamic_sections 5476 #define bfd_elf64_bfd_final_link \ 5477 elf64_ia64_final_link 5478 5479 #define bfd_elf64_bfd_merge_private_bfd_data \ 5480 elf64_ia64_merge_private_bfd_data 5481 #define bfd_elf64_bfd_set_private_flags \ 5482 elf64_ia64_set_private_flags 5483 #define bfd_elf64_bfd_print_private_bfd_data \ 5484 elf64_ia64_print_private_bfd_data 5485 5486 #define elf_backend_plt_readonly 1 5487 #define elf_backend_want_plt_sym 0 5488 #define elf_backend_plt_alignment 5 5489 #define elf_backend_got_header_size 0 5490 #define elf_backend_want_got_plt 1 5491 #define elf_backend_may_use_rel_p 1 5492 #define elf_backend_may_use_rela_p 1 5493 #define elf_backend_default_use_rela_p 1 5494 #define elf_backend_want_dynbss 0 5495 #define elf_backend_hide_symbol elf64_ia64_hash_hide_symbol 5496 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol 5497 #define elf_backend_reloc_type_class elf64_ia64_reloc_type_class 5498 #define elf_backend_rela_normal 1 5499 #define elf_backend_special_sections elf64_ia64_special_sections 5500 #define elf_backend_default_execstack 0 5501 5502 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with 5503 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. 5504 We don't want to flood users with so many error messages. We turn 5505 off the warning for now. It will be turned on later when the Intel 5506 compiler is fixed. */ 5507 #define elf_backend_link_order_error_handler NULL 5508 5509 /* VMS-specific vectors. */ 5510 5511 #undef TARGET_LITTLE_SYM 5512 #define TARGET_LITTLE_SYM ia64_elf64_vms_vec 5513 #undef TARGET_LITTLE_NAME 5514 #define TARGET_LITTLE_NAME "elf64-ia64-vms" 5515 #undef TARGET_BIG_SYM 5516 #undef TARGET_BIG_NAME 5517 5518 /* These are VMS specific functions. */ 5519 5520 #undef elf_backend_object_p 5521 #define elf_backend_object_p elf64_vms_object_p 5522 5523 #undef elf_backend_section_from_shdr 5524 #define elf_backend_section_from_shdr elf64_vms_section_from_shdr 5525 5526 #undef elf_backend_post_process_headers 5527 #define elf_backend_post_process_headers elf64_vms_post_process_headers 5528 5529 #undef elf_backend_section_processing 5530 #define elf_backend_section_processing elf64_vms_section_processing 5531 5532 #undef elf_backend_final_write_processing 5533 #define elf_backend_final_write_processing elf64_vms_final_write_processing 5534 5535 #undef bfd_elf64_close_and_cleanup 5536 #define bfd_elf64_close_and_cleanup elf64_vms_close_and_cleanup 5537 5538 #undef elf_backend_section_from_bfd_section 5539 5540 #undef elf_backend_symbol_processing 5541 5542 #undef elf_backend_want_p_paddr_set_to_zero 5543 5544 #undef ELF_OSABI 5545 #define ELF_OSABI ELFOSABI_OPENVMS 5546 5547 #undef ELF_MAXPAGESIZE 5548 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ 5549 5550 #undef elf64_bed 5551 #define elf64_bed elf64_ia64_vms_bed 5552 5553 #define elf_backend_size_info elf64_ia64_vms_size_info 5554 5555 /* Use VMS-style archives (in particular, don't use the standard coff 5556 archive format). */ 5557 #define bfd_elf64_archive_functions 5558 5559 #undef bfd_elf64_archive_p 5560 #define bfd_elf64_archive_p _bfd_vms_lib_ia64_archive_p 5561 #undef bfd_elf64_write_archive_contents 5562 #define bfd_elf64_write_archive_contents _bfd_vms_lib_write_archive_contents 5563 #undef bfd_elf64_mkarchive 5564 #define bfd_elf64_mkarchive _bfd_vms_lib_ia64_mkarchive 5565 5566 #define bfd_elf64_archive_slurp_armap \ 5567 _bfd_vms_lib_slurp_armap 5568 #define bfd_elf64_archive_slurp_extended_name_table \ 5569 _bfd_vms_lib_slurp_extended_name_table 5570 #define bfd_elf64_archive_construct_extended_name_table \ 5571 _bfd_vms_lib_construct_extended_name_table 5572 #define bfd_elf64_archive_truncate_arname \ 5573 _bfd_vms_lib_truncate_arname 5574 #define bfd_elf64_archive_write_armap \ 5575 _bfd_vms_lib_write_armap 5576 #define bfd_elf64_archive_read_ar_hdr \ 5577 _bfd_vms_lib_read_ar_hdr 5578 #define bfd_elf64_archive_write_ar_hdr \ 5579 _bfd_vms_lib_write_ar_hdr 5580 #define bfd_elf64_archive_openr_next_archived_file \ 5581 _bfd_vms_lib_openr_next_archived_file 5582 #define bfd_elf64_archive_get_elt_at_index \ 5583 _bfd_vms_lib_get_elt_at_index 5584 #define bfd_elf64_archive_generic_stat_arch_elt \ 5585 _bfd_vms_lib_generic_stat_arch_elt 5586 #define bfd_elf64_archive_update_armap_timestamp \ 5587 _bfd_vms_lib_update_armap_timestamp 5588 5589 /* VMS link methods. */ 5590 #undef bfd_elf64_bfd_link_add_symbols 5591 #define bfd_elf64_bfd_link_add_symbols elf64_vms_bfd_link_add_symbols 5592 5593 #undef elf_backend_want_got_sym 5594 #define elf_backend_want_got_sym 0 5595 5596 #undef bfd_elf64_mkobject 5597 #define bfd_elf64_mkobject elf64_ia64_vms_mkobject 5598 5599 /* Redefine to align segments on block size. */ 5600 #undef ELF_MAXPAGESIZE 5601 #define ELF_MAXPAGESIZE 0x200 /* 512B */ 5602 5603 #undef elf_backend_want_got_plt 5604 #define elf_backend_want_got_plt 0 5605 5606 #include "elf64-target.h" 5607
