elfnn-ia64.c revision 1.1.1.3.12.2
1 /* IA-64 support for 64-bit ELF 2 Copyright (C) 1998-2018 Free Software Foundation, Inc. 3 Contributed by David Mosberger-Tang <davidm (at) hpl.hp.com> 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22 #include "sysdep.h" 23 #include "bfd.h" 24 #include "libbfd.h" 25 #include "elf-bfd.h" 26 #include "opcode/ia64.h" 27 #include "elf/ia64.h" 28 #include "objalloc.h" 29 #include "hashtab.h" 30 #include "bfd_stdint.h" 31 #include "elfxx-ia64.h" 32 33 #define ARCH_SIZE NN 34 35 #if ARCH_SIZE == 64 36 #define LOG_SECTION_ALIGN 3 37 #endif 38 39 #if ARCH_SIZE == 32 40 #define LOG_SECTION_ALIGN 2 41 #endif 42 43 typedef struct bfd_hash_entry *(*new_hash_entry_func) 44 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); 45 46 /* In dynamically (linker-) created sections, we generally need to keep track 47 of the place a symbol or expression got allocated to. This is done via hash 48 tables that store entries of the following type. */ 49 50 struct elfNN_ia64_dyn_sym_info 51 { 52 /* The addend for which this entry is relevant. */ 53 bfd_vma addend; 54 55 bfd_vma got_offset; 56 bfd_vma fptr_offset; 57 bfd_vma pltoff_offset; 58 bfd_vma plt_offset; 59 bfd_vma plt2_offset; 60 bfd_vma tprel_offset; 61 bfd_vma dtpmod_offset; 62 bfd_vma dtprel_offset; 63 64 /* The symbol table entry, if any, that this was derived from. */ 65 struct elf_link_hash_entry *h; 66 67 /* Used to count non-got, non-plt relocations for delayed sizing 68 of relocation sections. */ 69 struct elfNN_ia64_dyn_reloc_entry 70 { 71 struct elfNN_ia64_dyn_reloc_entry *next; 72 asection *srel; 73 int type; 74 int count; 75 76 /* Is this reloc against readonly section? */ 77 bfd_boolean reltext; 78 } *reloc_entries; 79 80 /* TRUE when the section contents have been updated. */ 81 unsigned got_done : 1; 82 unsigned fptr_done : 1; 83 unsigned pltoff_done : 1; 84 unsigned tprel_done : 1; 85 unsigned dtpmod_done : 1; 86 unsigned dtprel_done : 1; 87 88 /* TRUE for the different kinds of linker data we want created. */ 89 unsigned want_got : 1; 90 unsigned want_gotx : 1; 91 unsigned want_fptr : 1; 92 unsigned want_ltoff_fptr : 1; 93 unsigned want_plt : 1; 94 unsigned want_plt2 : 1; 95 unsigned want_pltoff : 1; 96 unsigned want_tprel : 1; 97 unsigned want_dtpmod : 1; 98 unsigned want_dtprel : 1; 99 }; 100 101 struct elfNN_ia64_local_hash_entry 102 { 103 int id; 104 unsigned int r_sym; 105 /* The number of elements in elfNN_ia64_dyn_sym_info array. */ 106 unsigned int count; 107 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ 108 unsigned int sorted_count; 109 /* The size of elfNN_ia64_dyn_sym_info array. */ 110 unsigned int size; 111 /* The array of elfNN_ia64_dyn_sym_info. */ 112 struct elfNN_ia64_dyn_sym_info *info; 113 114 /* TRUE if this hash entry's addends was translated for 115 SHF_MERGE optimization. */ 116 unsigned sec_merge_done : 1; 117 }; 118 119 struct elfNN_ia64_link_hash_entry 120 { 121 struct elf_link_hash_entry root; 122 /* The number of elements in elfNN_ia64_dyn_sym_info array. */ 123 unsigned int count; 124 /* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */ 125 unsigned int sorted_count; 126 /* The size of elfNN_ia64_dyn_sym_info array. */ 127 unsigned int size; 128 /* The array of elfNN_ia64_dyn_sym_info. */ 129 struct elfNN_ia64_dyn_sym_info *info; 130 }; 131 132 struct elfNN_ia64_link_hash_table 133 { 134 /* The main hash table. */ 135 struct elf_link_hash_table root; 136 137 asection *fptr_sec; /* Function descriptor table (or NULL). */ 138 asection *rel_fptr_sec; /* Dynamic relocation section for same. */ 139 asection *pltoff_sec; /* Private descriptors for plt (or NULL). */ 140 asection *rel_pltoff_sec; /* Dynamic relocation section for same. */ 141 142 bfd_size_type minplt_entries; /* Number of minplt entries. */ 143 unsigned reltext : 1; /* Are there relocs against readonly sections? */ 144 unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */ 145 bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */ 146 /* There are maybe R_IA64_GPREL22 relocations, including those 147 optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT 148 sections. We need to record those sections so that we can choose 149 a proper GP to cover all R_IA64_GPREL22 relocations. */ 150 asection *max_short_sec; /* Maximum short output section. */ 151 bfd_vma max_short_offset; /* Maximum short offset. */ 152 asection *min_short_sec; /* Minimum short output section. */ 153 bfd_vma min_short_offset; /* Minimum short offset. */ 154 155 htab_t loc_hash_table; 156 void *loc_hash_memory; 157 }; 158 159 struct elfNN_ia64_allocate_data 160 { 161 struct bfd_link_info *info; 162 bfd_size_type ofs; 163 bfd_boolean only_got; 164 }; 165 166 #define elfNN_ia64_hash_table(p) \ 167 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 168 == IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL) 169 170 static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info 171 (struct elfNN_ia64_link_hash_table *ia64_info, 172 struct elf_link_hash_entry *h, 173 bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create); 174 static bfd_boolean elfNN_ia64_dynamic_symbol_p 175 (struct elf_link_hash_entry *h, struct bfd_link_info *info, int); 176 static bfd_boolean elfNN_ia64_choose_gp 177 (bfd *abfd, struct bfd_link_info *info, bfd_boolean final); 178 static void elfNN_ia64_dyn_sym_traverse 179 (struct elfNN_ia64_link_hash_table *ia64_info, 180 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *), 181 void * info); 182 static bfd_boolean allocate_global_data_got 183 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); 184 static bfd_boolean allocate_global_fptr_got 185 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); 186 static bfd_boolean allocate_local_got 187 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); 188 static bfd_boolean elfNN_ia64_hpux_vec 189 (const bfd_target *vec); 190 static bfd_boolean allocate_dynrel_entries 191 (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data); 192 static asection *get_pltoff 193 (bfd *abfd, struct bfd_link_info *info, 194 struct elfNN_ia64_link_hash_table *ia64_info); 195 196 /* ia64-specific relocation. */ 198 199 /* Given a ELF reloc, return the matching HOWTO structure. */ 200 201 static bfd_boolean 202 elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 203 arelent *bfd_reloc, 204 Elf_Internal_Rela *elf_reloc) 205 { 206 unsigned int r_type = ELF32_R_TYPE (elf_reloc->r_info); 207 208 bfd_reloc->howto = ia64_elf_lookup_howto (r_type); 209 if (bfd_reloc->howto == NULL) 210 { 211 /* xgettext:c-format */ 212 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 213 abfd, r_type); 214 bfd_set_error (bfd_error_bad_value); 215 return FALSE; 216 } 217 218 return TRUE; 219 } 220 221 #define PLT_HEADER_SIZE (3 * 16) 223 #define PLT_MIN_ENTRY_SIZE (1 * 16) 224 #define PLT_FULL_ENTRY_SIZE (2 * 16) 225 #define PLT_RESERVED_WORDS 3 226 227 static const bfd_byte plt_header[PLT_HEADER_SIZE] = 228 { 229 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */ 230 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */ 231 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ 232 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */ 233 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */ 234 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ 235 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */ 236 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */ 237 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ 238 }; 239 240 static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] = 241 { 242 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */ 243 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */ 244 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */ 245 }; 246 247 static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = 248 { 249 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ 250 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ 251 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ 252 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ 253 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ 254 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ 255 }; 256 257 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" 258 259 static const bfd_byte oor_brl[16] = 260 { 261 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ 262 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */ 263 0x00, 0x00, 0x00, 0xc0 264 }; 265 266 static const bfd_byte oor_ip[48] = 267 { 268 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ 269 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */ 270 0x01, 0x00, 0x00, 0x60, 271 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */ 272 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */ 273 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */ 274 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */ 275 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ 276 0x60, 0x00, 0x80, 0x00 /* br b6;; */ 277 }; 278 279 static size_t oor_branch_size = sizeof (oor_brl); 280 281 void 282 bfd_elfNN_ia64_after_parse (int itanium) 283 { 284 oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl); 285 } 286 287 289 /* Rename some of the generic section flags to better document how they 290 are used here. */ 291 #define skip_relax_pass_0 sec_flg0 292 #define skip_relax_pass_1 sec_flg1 293 294 /* These functions do relaxation for IA-64 ELF. */ 295 296 static void 297 elfNN_ia64_update_short_info (asection *sec, bfd_vma offset, 298 struct elfNN_ia64_link_hash_table *ia64_info) 299 { 300 /* Skip ABS and SHF_IA_64_SHORT sections. */ 301 if (sec == bfd_abs_section_ptr 302 || (sec->flags & SEC_SMALL_DATA) != 0) 303 return; 304 305 if (!ia64_info->min_short_sec) 306 { 307 ia64_info->max_short_sec = sec; 308 ia64_info->max_short_offset = offset; 309 ia64_info->min_short_sec = sec; 310 ia64_info->min_short_offset = offset; 311 } 312 else if (sec == ia64_info->max_short_sec 313 && offset > ia64_info->max_short_offset) 314 ia64_info->max_short_offset = offset; 315 else if (sec == ia64_info->min_short_sec 316 && offset < ia64_info->min_short_offset) 317 ia64_info->min_short_offset = offset; 318 else if (sec->output_section->vma 319 > ia64_info->max_short_sec->vma) 320 { 321 ia64_info->max_short_sec = sec; 322 ia64_info->max_short_offset = offset; 323 } 324 else if (sec->output_section->vma 325 < ia64_info->min_short_sec->vma) 326 { 327 ia64_info->min_short_sec = sec; 328 ia64_info->min_short_offset = offset; 329 } 330 } 331 332 static bfd_boolean 333 elfNN_ia64_relax_section (bfd *abfd, asection *sec, 334 struct bfd_link_info *link_info, 335 bfd_boolean *again) 336 { 337 struct one_fixup 338 { 339 struct one_fixup *next; 340 asection *tsec; 341 bfd_vma toff; 342 bfd_vma trampoff; 343 }; 344 345 Elf_Internal_Shdr *symtab_hdr; 346 Elf_Internal_Rela *internal_relocs; 347 Elf_Internal_Rela *irel, *irelend; 348 bfd_byte *contents; 349 Elf_Internal_Sym *isymbuf = NULL; 350 struct elfNN_ia64_link_hash_table *ia64_info; 351 struct one_fixup *fixups = NULL; 352 bfd_boolean changed_contents = FALSE; 353 bfd_boolean changed_relocs = FALSE; 354 bfd_boolean changed_got = FALSE; 355 bfd_boolean skip_relax_pass_0 = TRUE; 356 bfd_boolean skip_relax_pass_1 = TRUE; 357 bfd_vma gp = 0; 358 359 /* Assume we're not going to change any sizes, and we'll only need 360 one pass. */ 361 *again = FALSE; 362 363 if (bfd_link_relocatable (link_info)) 364 (*link_info->callbacks->einfo) 365 (_("%P%F: --relax and -r may not be used together\n")); 366 367 /* Don't even try to relax for non-ELF outputs. */ 368 if (!is_elf_hash_table (link_info->hash)) 369 return FALSE; 370 371 /* Nothing to do if there are no relocations or there is no need for 372 the current pass. */ 373 if ((sec->flags & SEC_RELOC) == 0 374 || sec->reloc_count == 0 375 || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) 376 || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) 377 return TRUE; 378 379 ia64_info = elfNN_ia64_hash_table (link_info); 380 if (ia64_info == NULL) 381 return FALSE; 382 383 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 384 385 /* Load the relocations for this section. */ 386 internal_relocs = (_bfd_elf_link_read_relocs 387 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, 388 link_info->keep_memory)); 389 if (internal_relocs == NULL) 390 return FALSE; 391 392 irelend = internal_relocs + sec->reloc_count; 393 394 /* Get the section contents. */ 395 if (elf_section_data (sec)->this_hdr.contents != NULL) 396 contents = elf_section_data (sec)->this_hdr.contents; 397 else 398 { 399 if (!bfd_malloc_and_get_section (abfd, sec, &contents)) 400 goto error_return; 401 } 402 403 for (irel = internal_relocs; irel < irelend; irel++) 404 { 405 unsigned long r_type = ELFNN_R_TYPE (irel->r_info); 406 bfd_vma symaddr, reladdr, trampoff, toff, roff; 407 asection *tsec; 408 struct one_fixup *f; 409 bfd_size_type amt; 410 bfd_boolean is_branch; 411 struct elfNN_ia64_dyn_sym_info *dyn_i; 412 char symtype; 413 414 switch (r_type) 415 { 416 case R_IA64_PCREL21B: 417 case R_IA64_PCREL21BI: 418 case R_IA64_PCREL21M: 419 case R_IA64_PCREL21F: 420 /* In pass 1, all br relaxations are done. We can skip it. */ 421 if (link_info->relax_pass == 1) 422 continue; 423 skip_relax_pass_0 = FALSE; 424 is_branch = TRUE; 425 break; 426 427 case R_IA64_PCREL60B: 428 /* We can't optimize brl to br in pass 0 since br relaxations 429 will increase the code size. Defer it to pass 1. */ 430 if (link_info->relax_pass == 0) 431 { 432 skip_relax_pass_1 = FALSE; 433 continue; 434 } 435 is_branch = TRUE; 436 break; 437 438 case R_IA64_GPREL22: 439 /* Update max_short_sec/min_short_sec. */ 440 441 case R_IA64_LTOFF22X: 442 case R_IA64_LDXMOV: 443 /* We can't relax ldx/mov in pass 0 since br relaxations will 444 increase the code size. Defer it to pass 1. */ 445 if (link_info->relax_pass == 0) 446 { 447 skip_relax_pass_1 = FALSE; 448 continue; 449 } 450 is_branch = FALSE; 451 break; 452 453 default: 454 continue; 455 } 456 457 /* Get the value of the symbol referred to by the reloc. */ 458 if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info) 459 { 460 /* A local symbol. */ 461 Elf_Internal_Sym *isym; 462 463 /* Read this BFD's local symbols. */ 464 if (isymbuf == NULL) 465 { 466 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; 467 if (isymbuf == NULL) 468 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, 469 symtab_hdr->sh_info, 0, 470 NULL, NULL, NULL); 471 if (isymbuf == 0) 472 goto error_return; 473 } 474 475 isym = isymbuf + ELFNN_R_SYM (irel->r_info); 476 if (isym->st_shndx == SHN_UNDEF) 477 continue; /* We can't do anything with undefined symbols. */ 478 else if (isym->st_shndx == SHN_ABS) 479 tsec = bfd_abs_section_ptr; 480 else if (isym->st_shndx == SHN_COMMON) 481 tsec = bfd_com_section_ptr; 482 else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) 483 tsec = bfd_com_section_ptr; 484 else 485 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); 486 487 toff = isym->st_value; 488 dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); 489 symtype = ELF_ST_TYPE (isym->st_info); 490 } 491 else 492 { 493 unsigned long indx; 494 struct elf_link_hash_entry *h; 495 496 indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info; 497 h = elf_sym_hashes (abfd)[indx]; 498 BFD_ASSERT (h != NULL); 499 500 while (h->root.type == bfd_link_hash_indirect 501 || h->root.type == bfd_link_hash_warning) 502 h = (struct elf_link_hash_entry *) h->root.u.i.link; 503 504 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); 505 506 /* For branches to dynamic symbols, we're interested instead 507 in a branch to the PLT entry. */ 508 if (is_branch && dyn_i && dyn_i->want_plt2) 509 { 510 /* Internal branches shouldn't be sent to the PLT. 511 Leave this for now and we'll give an error later. */ 512 if (r_type != R_IA64_PCREL21B) 513 continue; 514 515 tsec = ia64_info->root.splt; 516 toff = dyn_i->plt2_offset; 517 BFD_ASSERT (irel->r_addend == 0); 518 } 519 520 /* Can't do anything else with dynamic symbols. */ 521 else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type)) 522 continue; 523 524 else 525 { 526 /* We can't do anything with undefined symbols. */ 527 if (h->root.type == bfd_link_hash_undefined 528 || h->root.type == bfd_link_hash_undefweak) 529 continue; 530 531 tsec = h->root.u.def.section; 532 toff = h->root.u.def.value; 533 } 534 535 symtype = h->type; 536 } 537 538 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE) 539 { 540 /* At this stage in linking, no SEC_MERGE symbol has been 541 adjusted, so all references to such symbols need to be 542 passed through _bfd_merged_section_offset. (Later, in 543 relocate_section, all SEC_MERGE symbols *except* for 544 section symbols have been adjusted.) 545 546 gas may reduce relocations against symbols in SEC_MERGE 547 sections to a relocation against the section symbol when 548 the original addend was zero. When the reloc is against 549 a section symbol we should include the addend in the 550 offset passed to _bfd_merged_section_offset, since the 551 location of interest is the original symbol. On the 552 other hand, an access to "sym+addend" where "sym" is not 553 a section symbol should not include the addend; Such an 554 access is presumed to be an offset from "sym"; The 555 location of interest is just "sym". */ 556 if (symtype == STT_SECTION) 557 toff += irel->r_addend; 558 559 toff = _bfd_merged_section_offset (abfd, &tsec, 560 elf_section_data (tsec)->sec_info, 561 toff); 562 563 if (symtype != STT_SECTION) 564 toff += irel->r_addend; 565 } 566 else 567 toff += irel->r_addend; 568 569 symaddr = tsec->output_section->vma + tsec->output_offset + toff; 570 571 roff = irel->r_offset; 572 573 if (is_branch) 574 { 575 bfd_signed_vma offset; 576 577 reladdr = (sec->output_section->vma 578 + sec->output_offset 579 + roff) & (bfd_vma) -4; 580 581 /* The .plt section is aligned at 32byte and the .text section 582 is aligned at 64byte. The .text section is right after the 583 .plt section. After the first relaxation pass, linker may 584 increase the gap between the .plt and .text sections up 585 to 32byte. We assume linker will always insert 32byte 586 between the .plt and .text sections after the first 587 relaxation pass. */ 588 if (tsec == ia64_info->root.splt) 589 offset = -0x1000000 + 32; 590 else 591 offset = -0x1000000; 592 593 /* If the branch is in range, no need to do anything. */ 594 if ((bfd_signed_vma) (symaddr - reladdr) >= offset 595 && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) 596 { 597 /* If the 60-bit branch is in 21-bit range, optimize it. */ 598 if (r_type == R_IA64_PCREL60B) 599 { 600 ia64_elf_relax_brl (contents, roff); 601 602 irel->r_info 603 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), 604 R_IA64_PCREL21B); 605 606 /* If the original relocation offset points to slot 607 1, change it to slot 2. */ 608 if ((irel->r_offset & 3) == 1) 609 irel->r_offset += 1; 610 611 changed_contents = TRUE; 612 changed_relocs = TRUE; 613 } 614 615 continue; 616 } 617 else if (r_type == R_IA64_PCREL60B) 618 continue; 619 else if (ia64_elf_relax_br (contents, roff)) 620 { 621 irel->r_info 622 = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), 623 R_IA64_PCREL60B); 624 625 /* Make the relocation offset point to slot 1. */ 626 irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; 627 628 changed_contents = TRUE; 629 changed_relocs = TRUE; 630 continue; 631 } 632 633 /* We can't put a trampoline in a .init/.fini section. Issue 634 an error. */ 635 if (strcmp (sec->output_section->name, ".init") == 0 636 || strcmp (sec->output_section->name, ".fini") == 0) 637 { 638 _bfd_error_handler 639 /* xgettext:c-format */ 640 (_("%pB: can't relax br at %#" PRIx64 " in section `%pA';" 641 " please use brl or indirect branch"), 642 sec->owner, (uint64_t) roff, sec); 643 bfd_set_error (bfd_error_bad_value); 644 goto error_return; 645 } 646 647 /* If the branch and target are in the same section, you've 648 got one honking big section and we can't help you unless 649 you are branching backwards. You'll get an error message 650 later. */ 651 if (tsec == sec && toff > roff) 652 continue; 653 654 /* Look for an existing fixup to this address. */ 655 for (f = fixups; f ; f = f->next) 656 if (f->tsec == tsec && f->toff == toff) 657 break; 658 659 if (f == NULL) 660 { 661 /* Two alternatives: If it's a branch to a PLT entry, we can 662 make a copy of the FULL_PLT entry. Otherwise, we'll have 663 to use a `brl' insn to get where we're going. */ 664 665 size_t size; 666 667 if (tsec == ia64_info->root.splt) 668 size = sizeof (plt_full_entry); 669 else 670 size = oor_branch_size; 671 672 /* Resize the current section to make room for the new branch. */ 673 trampoff = (sec->size + 15) & (bfd_vma) -16; 674 675 /* If trampoline is out of range, there is nothing we 676 can do. */ 677 offset = trampoff - (roff & (bfd_vma) -4); 678 if (offset < -0x1000000 || offset > 0x0FFFFF0) 679 continue; 680 681 amt = trampoff + size; 682 contents = (bfd_byte *) bfd_realloc (contents, amt); 683 if (contents == NULL) 684 goto error_return; 685 sec->size = amt; 686 687 if (tsec == ia64_info->root.splt) 688 { 689 memcpy (contents + trampoff, plt_full_entry, size); 690 691 /* Hijack the old relocation for use as the PLTOFF reloc. */ 692 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), 693 R_IA64_PLTOFF22); 694 irel->r_offset = trampoff; 695 } 696 else 697 { 698 if (size == sizeof (oor_ip)) 699 { 700 memcpy (contents + trampoff, oor_ip, size); 701 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), 702 R_IA64_PCREL64I); 703 irel->r_addend -= 16; 704 irel->r_offset = trampoff + 2; 705 } 706 else 707 { 708 memcpy (contents + trampoff, oor_brl, size); 709 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), 710 R_IA64_PCREL60B); 711 irel->r_offset = trampoff + 2; 712 } 713 714 } 715 716 /* Record the fixup so we don't do it again this section. */ 717 f = (struct one_fixup *) 718 bfd_malloc ((bfd_size_type) sizeof (*f)); 719 f->next = fixups; 720 f->tsec = tsec; 721 f->toff = toff; 722 f->trampoff = trampoff; 723 fixups = f; 724 } 725 else 726 { 727 /* If trampoline is out of range, there is nothing we 728 can do. */ 729 offset = f->trampoff - (roff & (bfd_vma) -4); 730 if (offset < -0x1000000 || offset > 0x0FFFFF0) 731 continue; 732 733 /* Nop out the reloc, since we're finalizing things here. */ 734 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); 735 } 736 737 /* Fix up the existing branch to hit the trampoline. */ 738 if (ia64_elf_install_value (contents + roff, offset, r_type) 739 != bfd_reloc_ok) 740 goto error_return; 741 742 changed_contents = TRUE; 743 changed_relocs = TRUE; 744 } 745 else 746 { 747 /* Fetch the gp. */ 748 if (gp == 0) 749 { 750 bfd *obfd = sec->output_section->owner; 751 gp = _bfd_get_gp_value (obfd); 752 if (gp == 0) 753 { 754 if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE)) 755 goto error_return; 756 gp = _bfd_get_gp_value (obfd); 757 } 758 } 759 760 /* If the data is out of range, do nothing. */ 761 if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 762 ||(bfd_signed_vma) (symaddr - gp) < -0x200000) 763 continue; 764 765 if (r_type == R_IA64_GPREL22) 766 elfNN_ia64_update_short_info (tsec->output_section, 767 tsec->output_offset + toff, 768 ia64_info); 769 else if (r_type == R_IA64_LTOFF22X) 770 { 771 irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), 772 R_IA64_GPREL22); 773 changed_relocs = TRUE; 774 if (dyn_i->want_gotx) 775 { 776 dyn_i->want_gotx = 0; 777 changed_got |= !dyn_i->want_got; 778 } 779 780 elfNN_ia64_update_short_info (tsec->output_section, 781 tsec->output_offset + toff, 782 ia64_info); 783 } 784 else 785 { 786 ia64_elf_relax_ldxmov (contents, roff); 787 irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); 788 changed_contents = TRUE; 789 changed_relocs = TRUE; 790 } 791 } 792 } 793 794 /* ??? If we created fixups, this may push the code segment large 795 enough that the data segment moves, which will change the GP. 796 Reset the GP so that we re-calculate next round. We need to 797 do this at the _beginning_ of the next round; now will not do. */ 798 799 /* Clean up and go home. */ 800 while (fixups) 801 { 802 struct one_fixup *f = fixups; 803 fixups = fixups->next; 804 free (f); 805 } 806 807 if (isymbuf != NULL 808 && symtab_hdr->contents != (unsigned char *) isymbuf) 809 { 810 if (! link_info->keep_memory) 811 free (isymbuf); 812 else 813 { 814 /* Cache the symbols for elf_link_input_bfd. */ 815 symtab_hdr->contents = (unsigned char *) isymbuf; 816 } 817 } 818 819 if (contents != NULL 820 && elf_section_data (sec)->this_hdr.contents != contents) 821 { 822 if (!changed_contents && !link_info->keep_memory) 823 free (contents); 824 else 825 { 826 /* Cache the section contents for elf_link_input_bfd. */ 827 elf_section_data (sec)->this_hdr.contents = contents; 828 } 829 } 830 831 if (elf_section_data (sec)->relocs != internal_relocs) 832 { 833 if (!changed_relocs) 834 free (internal_relocs); 835 else 836 elf_section_data (sec)->relocs = internal_relocs; 837 } 838 839 if (changed_got) 840 { 841 struct elfNN_ia64_allocate_data data; 842 data.info = link_info; 843 data.ofs = 0; 844 ia64_info->self_dtpmod_offset = (bfd_vma) -1; 845 846 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); 847 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); 848 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); 849 ia64_info->root.sgot->size = data.ofs; 850 851 if (ia64_info->root.dynamic_sections_created 852 && ia64_info->root.srelgot != NULL) 853 { 854 /* Resize .rela.got. */ 855 ia64_info->root.srelgot->size = 0; 856 if (bfd_link_pic (link_info) 857 && ia64_info->self_dtpmod_offset != (bfd_vma) -1) 858 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); 859 data.only_got = TRUE; 860 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, 861 &data); 862 } 863 } 864 865 if (link_info->relax_pass == 0) 866 { 867 /* Pass 0 is only needed to relax br. */ 868 sec->skip_relax_pass_0 = skip_relax_pass_0; 869 sec->skip_relax_pass_1 = skip_relax_pass_1; 870 } 871 872 *again = changed_contents || changed_relocs; 873 return TRUE; 874 875 error_return: 876 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) 877 free (isymbuf); 878 if (contents != NULL 879 && elf_section_data (sec)->this_hdr.contents != contents) 880 free (contents); 881 if (internal_relocs != NULL 882 && elf_section_data (sec)->relocs != internal_relocs) 883 free (internal_relocs); 884 return FALSE; 885 } 886 #undef skip_relax_pass_0 887 #undef skip_relax_pass_1 888 889 /* Return TRUE if NAME is an unwind table section name. */ 891 892 static inline bfd_boolean 893 is_unwind_section_name (bfd *abfd, const char *name) 894 { 895 if (elfNN_ia64_hpux_vec (abfd->xvec) 896 && !strcmp (name, ELF_STRING_ia64_unwind_hdr)) 897 return FALSE; 898 899 return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) 900 && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) 901 || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); 902 } 903 904 /* Handle an IA-64 specific section when reading an object file. This 905 is called when bfd_section_from_shdr finds a section with an unknown 906 type. */ 907 908 static bfd_boolean 909 elfNN_ia64_section_from_shdr (bfd *abfd, 910 Elf_Internal_Shdr *hdr, 911 const char *name, 912 int shindex) 913 { 914 /* There ought to be a place to keep ELF backend specific flags, but 915 at the moment there isn't one. We just keep track of the 916 sections by their name, instead. Fortunately, the ABI gives 917 suggested names for all the MIPS specific sections, so we will 918 probably get away with this. */ 919 switch (hdr->sh_type) 920 { 921 case SHT_IA_64_UNWIND: 922 case SHT_IA_64_HP_OPT_ANOT: 923 break; 924 925 case SHT_IA_64_EXT: 926 if (strcmp (name, ELF_STRING_ia64_archext) != 0) 927 return FALSE; 928 break; 929 930 default: 931 return FALSE; 932 } 933 934 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) 935 return FALSE; 936 937 return TRUE; 938 } 939 940 /* Convert IA-64 specific section flags to bfd internal section flags. */ 941 942 /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV 943 flag. */ 944 945 static bfd_boolean 946 elfNN_ia64_section_flags (flagword *flags, 947 const Elf_Internal_Shdr *hdr) 948 { 949 if (hdr->sh_flags & SHF_IA_64_SHORT) 950 *flags |= SEC_SMALL_DATA; 951 952 return TRUE; 953 } 954 955 /* Set the correct type for an IA-64 ELF section. We do this by the 956 section name, which is a hack, but ought to work. */ 957 958 static bfd_boolean 959 elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, 960 asection *sec) 961 { 962 const char *name; 963 964 name = bfd_get_section_name (abfd, sec); 965 966 if (is_unwind_section_name (abfd, name)) 967 { 968 /* We don't have the sections numbered at this point, so sh_info 969 is set later, in elfNN_ia64_final_write_processing. */ 970 hdr->sh_type = SHT_IA_64_UNWIND; 971 hdr->sh_flags |= SHF_LINK_ORDER; 972 } 973 else if (strcmp (name, ELF_STRING_ia64_archext) == 0) 974 hdr->sh_type = SHT_IA_64_EXT; 975 else if (strcmp (name, ".HP.opt_annot") == 0) 976 hdr->sh_type = SHT_IA_64_HP_OPT_ANOT; 977 else if (strcmp (name, ".reloc") == 0) 978 /* This is an ugly, but unfortunately necessary hack that is 979 needed when producing EFI binaries on IA-64. It tells 980 elf.c:elf_fake_sections() not to consider ".reloc" as a section 981 containing ELF relocation info. We need this hack in order to 982 be able to generate ELF binaries that can be translated into 983 EFI applications (which are essentially COFF objects). Those 984 files contain a COFF ".reloc" section inside an ELFNN object, 985 which would normally cause BFD to segfault because it would 986 attempt to interpret this section as containing relocation 987 entries for section "oc". With this hack enabled, ".reloc" 988 will be treated as a normal data section, which will avoid the 989 segfault. However, you won't be able to create an ELFNN binary 990 with a section named "oc" that needs relocations, but that's 991 the kind of ugly side-effects you get when detecting section 992 types based on their names... In practice, this limitation is 993 unlikely to bite. */ 994 hdr->sh_type = SHT_PROGBITS; 995 996 if (sec->flags & SEC_SMALL_DATA) 997 hdr->sh_flags |= SHF_IA_64_SHORT; 998 999 /* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */ 1000 1001 if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS)) 1002 hdr->sh_flags |= SHF_IA_64_HP_TLS; 1003 1004 return TRUE; 1005 } 1006 1007 /* The final processing done just before writing out an IA-64 ELF 1008 object file. */ 1009 1010 static void 1011 elfNN_ia64_final_write_processing (bfd *abfd, 1012 bfd_boolean linker ATTRIBUTE_UNUSED) 1013 { 1014 Elf_Internal_Shdr *hdr; 1015 asection *s; 1016 1017 for (s = abfd->sections; s; s = s->next) 1018 { 1019 hdr = &elf_section_data (s)->this_hdr; 1020 switch (hdr->sh_type) 1021 { 1022 case SHT_IA_64_UNWIND: 1023 /* The IA-64 processor-specific ABI requires setting sh_link 1024 to the unwind section, whereas HP-UX requires sh_info to 1025 do so. For maximum compatibility, we'll set both for 1026 now... */ 1027 hdr->sh_info = hdr->sh_link; 1028 break; 1029 } 1030 } 1031 1032 if (! elf_flags_init (abfd)) 1033 { 1034 unsigned long flags = 0; 1035 1036 if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) 1037 flags |= EF_IA_64_BE; 1038 if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) 1039 flags |= EF_IA_64_ABI64; 1040 1041 elf_elfheader(abfd)->e_flags = flags; 1042 elf_flags_init (abfd) = TRUE; 1043 } 1044 } 1045 1046 /* Hook called by the linker routine which adds symbols from an object 1047 file. We use it to put .comm items in .sbss, and not .bss. */ 1048 1049 static bfd_boolean 1050 elfNN_ia64_add_symbol_hook (bfd *abfd, 1051 struct bfd_link_info *info, 1052 Elf_Internal_Sym *sym, 1053 const char **namep ATTRIBUTE_UNUSED, 1054 flagword *flagsp ATTRIBUTE_UNUSED, 1055 asection **secp, 1056 bfd_vma *valp) 1057 { 1058 if (sym->st_shndx == SHN_COMMON 1059 && !bfd_link_relocatable (info) 1060 && sym->st_size <= elf_gp_size (abfd)) 1061 { 1062 /* Common symbols less than or equal to -G nn bytes are 1063 automatically put into .sbss. */ 1064 1065 asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); 1066 1067 if (scomm == NULL) 1068 { 1069 scomm = bfd_make_section_with_flags (abfd, ".scommon", 1070 (SEC_ALLOC 1071 | SEC_IS_COMMON 1072 | SEC_LINKER_CREATED)); 1073 if (scomm == NULL) 1074 return FALSE; 1075 } 1076 1077 *secp = scomm; 1078 *valp = sym->st_size; 1079 } 1080 1081 return TRUE; 1082 } 1083 1084 /* Return the number of additional phdrs we will need. */ 1085 1086 static int 1087 elfNN_ia64_additional_program_headers (bfd *abfd, 1088 struct bfd_link_info *info ATTRIBUTE_UNUSED) 1089 { 1090 asection *s; 1091 int ret = 0; 1092 1093 /* See if we need a PT_IA_64_ARCHEXT segment. */ 1094 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); 1095 if (s && (s->flags & SEC_LOAD)) 1096 ++ret; 1097 1098 /* Count how many PT_IA_64_UNWIND segments we need. */ 1099 for (s = abfd->sections; s; s = s->next) 1100 if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD)) 1101 ++ret; 1102 1103 return ret; 1104 } 1105 1106 static bfd_boolean 1107 elfNN_ia64_modify_segment_map (bfd *abfd, 1108 struct bfd_link_info *info ATTRIBUTE_UNUSED) 1109 { 1110 struct elf_segment_map *m, **pm; 1111 Elf_Internal_Shdr *hdr; 1112 asection *s; 1113 1114 /* If we need a PT_IA_64_ARCHEXT segment, it must come before 1115 all PT_LOAD segments. */ 1116 s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); 1117 if (s && (s->flags & SEC_LOAD)) 1118 { 1119 for (m = elf_seg_map (abfd); m != NULL; m = m->next) 1120 if (m->p_type == PT_IA_64_ARCHEXT) 1121 break; 1122 if (m == NULL) 1123 { 1124 m = ((struct elf_segment_map *) 1125 bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); 1126 if (m == NULL) 1127 return FALSE; 1128 1129 m->p_type = PT_IA_64_ARCHEXT; 1130 m->count = 1; 1131 m->sections[0] = s; 1132 1133 /* We want to put it after the PHDR and INTERP segments. */ 1134 pm = &elf_seg_map (abfd); 1135 while (*pm != NULL 1136 && ((*pm)->p_type == PT_PHDR 1137 || (*pm)->p_type == PT_INTERP)) 1138 pm = &(*pm)->next; 1139 1140 m->next = *pm; 1141 *pm = m; 1142 } 1143 } 1144 1145 /* Install PT_IA_64_UNWIND segments, if needed. */ 1146 for (s = abfd->sections; s; s = s->next) 1147 { 1148 hdr = &elf_section_data (s)->this_hdr; 1149 if (hdr->sh_type != SHT_IA_64_UNWIND) 1150 continue; 1151 1152 if (s && (s->flags & SEC_LOAD)) 1153 { 1154 for (m = elf_seg_map (abfd); m != NULL; m = m->next) 1155 if (m->p_type == PT_IA_64_UNWIND) 1156 { 1157 int i; 1158 1159 /* Look through all sections in the unwind segment 1160 for a match since there may be multiple sections 1161 to a segment. */ 1162 for (i = m->count - 1; i >= 0; --i) 1163 if (m->sections[i] == s) 1164 break; 1165 1166 if (i >= 0) 1167 break; 1168 } 1169 1170 if (m == NULL) 1171 { 1172 m = ((struct elf_segment_map *) 1173 bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); 1174 if (m == NULL) 1175 return FALSE; 1176 1177 m->p_type = PT_IA_64_UNWIND; 1178 m->count = 1; 1179 m->sections[0] = s; 1180 m->next = NULL; 1181 1182 /* We want to put it last. */ 1183 pm = &elf_seg_map (abfd); 1184 while (*pm != NULL) 1185 pm = &(*pm)->next; 1186 *pm = m; 1187 } 1188 } 1189 } 1190 1191 return TRUE; 1192 } 1193 1194 /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of 1195 the input sections for each output section in the segment and testing 1196 for SHF_IA_64_NORECOV on each. */ 1197 1198 static bfd_boolean 1199 elfNN_ia64_modify_program_headers (bfd *abfd, 1200 struct bfd_link_info *info ATTRIBUTE_UNUSED) 1201 { 1202 struct elf_obj_tdata *tdata = elf_tdata (abfd); 1203 struct elf_segment_map *m; 1204 Elf_Internal_Phdr *p; 1205 1206 for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++) 1207 if (m->p_type == PT_LOAD) 1208 { 1209 int i; 1210 for (i = m->count - 1; i >= 0; --i) 1211 { 1212 struct bfd_link_order *order = m->sections[i]->map_head.link_order; 1213 1214 while (order != NULL) 1215 { 1216 if (order->type == bfd_indirect_link_order) 1217 { 1218 asection *is = order->u.indirect.section; 1219 bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags; 1220 if (flags & SHF_IA_64_NORECOV) 1221 { 1222 p->p_flags |= PF_IA_64_NORECOV; 1223 goto found; 1224 } 1225 } 1226 order = order->next; 1227 } 1228 } 1229 found:; 1230 } 1231 1232 return TRUE; 1233 } 1234 1235 /* According to the Tahoe assembler spec, all labels starting with a 1236 '.' are local. */ 1237 1238 static bfd_boolean 1239 elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, 1240 const char *name) 1241 { 1242 return name[0] == '.'; 1243 } 1244 1245 /* Should we do dynamic things to this symbol? */ 1246 1247 static bfd_boolean 1248 elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h, 1249 struct bfd_link_info *info, int r_type) 1250 { 1251 bfd_boolean ignore_protected 1252 = ((r_type & 0xf8) == 0x40 /* FPTR relocs */ 1253 || (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */ 1254 1255 return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected); 1256 } 1257 1258 static struct bfd_hash_entry* 1260 elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, 1261 struct bfd_hash_table *table, 1262 const char *string) 1263 { 1264 struct elfNN_ia64_link_hash_entry *ret; 1265 ret = (struct elfNN_ia64_link_hash_entry *) entry; 1266 1267 /* Allocate the structure if it has not already been allocated by a 1268 subclass. */ 1269 if (!ret) 1270 ret = bfd_hash_allocate (table, sizeof (*ret)); 1271 1272 if (!ret) 1273 return 0; 1274 1275 /* Call the allocation method of the superclass. */ 1276 ret = ((struct elfNN_ia64_link_hash_entry *) 1277 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 1278 table, string)); 1279 1280 ret->info = NULL; 1281 ret->count = 0; 1282 ret->sorted_count = 0; 1283 ret->size = 0; 1284 return (struct bfd_hash_entry *) ret; 1285 } 1286 1287 static void 1288 elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info, 1289 struct elf_link_hash_entry *xdir, 1290 struct elf_link_hash_entry *xind) 1291 { 1292 struct elfNN_ia64_link_hash_entry *dir, *ind; 1293 1294 dir = (struct elfNN_ia64_link_hash_entry *) xdir; 1295 ind = (struct elfNN_ia64_link_hash_entry *) xind; 1296 1297 /* Copy down any references that we may have already seen to the 1298 symbol which just became indirect. */ 1299 1300 if (dir->root.versioned != versioned_hidden) 1301 dir->root.ref_dynamic |= ind->root.ref_dynamic; 1302 dir->root.ref_regular |= ind->root.ref_regular; 1303 dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak; 1304 dir->root.needs_plt |= ind->root.needs_plt; 1305 1306 if (ind->root.root.type != bfd_link_hash_indirect) 1307 return; 1308 1309 /* Copy over the got and plt data. This would have been done 1310 by check_relocs. */ 1311 1312 if (ind->info != NULL) 1313 { 1314 struct elfNN_ia64_dyn_sym_info *dyn_i; 1315 unsigned int count; 1316 1317 if (dir->info) 1318 free (dir->info); 1319 1320 dir->info = ind->info; 1321 dir->count = ind->count; 1322 dir->sorted_count = ind->sorted_count; 1323 dir->size = ind->size; 1324 1325 ind->info = NULL; 1326 ind->count = 0; 1327 ind->sorted_count = 0; 1328 ind->size = 0; 1329 1330 /* Fix up the dyn_sym_info pointers to the global symbol. */ 1331 for (count = dir->count, dyn_i = dir->info; 1332 count != 0; 1333 count--, dyn_i++) 1334 dyn_i->h = &dir->root; 1335 } 1336 1337 /* Copy over the dynindx. */ 1338 1339 if (ind->root.dynindx != -1) 1340 { 1341 if (dir->root.dynindx != -1) 1342 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, 1343 dir->root.dynstr_index); 1344 dir->root.dynindx = ind->root.dynindx; 1345 dir->root.dynstr_index = ind->root.dynstr_index; 1346 ind->root.dynindx = -1; 1347 ind->root.dynstr_index = 0; 1348 } 1349 } 1350 1351 static void 1352 elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info, 1353 struct elf_link_hash_entry *xh, 1354 bfd_boolean force_local) 1355 { 1356 struct elfNN_ia64_link_hash_entry *h; 1357 struct elfNN_ia64_dyn_sym_info *dyn_i; 1358 unsigned int count; 1359 1360 h = (struct elfNN_ia64_link_hash_entry *)xh; 1361 1362 _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); 1363 1364 for (count = h->count, dyn_i = h->info; 1365 count != 0; 1366 count--, dyn_i++) 1367 { 1368 dyn_i->want_plt2 = 0; 1369 dyn_i->want_plt = 0; 1370 } 1371 } 1372 1373 /* Compute a hash of a local hash entry. */ 1374 1375 static hashval_t 1376 elfNN_ia64_local_htab_hash (const void *ptr) 1377 { 1378 struct elfNN_ia64_local_hash_entry *entry 1379 = (struct elfNN_ia64_local_hash_entry *) ptr; 1380 1381 return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); 1382 } 1383 1384 /* Compare local hash entries. */ 1385 1386 static int 1387 elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2) 1388 { 1389 struct elfNN_ia64_local_hash_entry *entry1 1390 = (struct elfNN_ia64_local_hash_entry *) ptr1; 1391 struct elfNN_ia64_local_hash_entry *entry2 1392 = (struct elfNN_ia64_local_hash_entry *) ptr2; 1393 1394 return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; 1395 } 1396 1397 /* Free the global elfNN_ia64_dyn_sym_info array. */ 1398 1399 static bfd_boolean 1400 elfNN_ia64_global_dyn_info_free (void **xentry, 1401 void * unused ATTRIBUTE_UNUSED) 1402 { 1403 struct elfNN_ia64_link_hash_entry *entry 1404 = (struct elfNN_ia64_link_hash_entry *) xentry; 1405 1406 if (entry->info) 1407 { 1408 free (entry->info); 1409 entry->info = NULL; 1410 entry->count = 0; 1411 entry->sorted_count = 0; 1412 entry->size = 0; 1413 } 1414 1415 return TRUE; 1416 } 1417 1418 /* Free the local elfNN_ia64_dyn_sym_info array. */ 1419 1420 static bfd_boolean 1421 elfNN_ia64_local_dyn_info_free (void **slot, 1422 void * unused ATTRIBUTE_UNUSED) 1423 { 1424 struct elfNN_ia64_local_hash_entry *entry 1425 = (struct elfNN_ia64_local_hash_entry *) *slot; 1426 1427 if (entry->info) 1428 { 1429 free (entry->info); 1430 entry->info = NULL; 1431 entry->count = 0; 1432 entry->sorted_count = 0; 1433 entry->size = 0; 1434 } 1435 1436 return TRUE; 1437 } 1438 1439 /* Destroy IA-64 linker hash table. */ 1440 1441 static void 1442 elfNN_ia64_link_hash_table_free (bfd *obfd) 1443 { 1444 struct elfNN_ia64_link_hash_table *ia64_info 1445 = (struct elfNN_ia64_link_hash_table *) obfd->link.hash; 1446 if (ia64_info->loc_hash_table) 1447 { 1448 htab_traverse (ia64_info->loc_hash_table, 1449 elfNN_ia64_local_dyn_info_free, NULL); 1450 htab_delete (ia64_info->loc_hash_table); 1451 } 1452 if (ia64_info->loc_hash_memory) 1453 objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); 1454 elf_link_hash_traverse (&ia64_info->root, 1455 elfNN_ia64_global_dyn_info_free, NULL); 1456 _bfd_elf_link_hash_table_free (obfd); 1457 } 1458 1459 /* Create the derived linker hash table. The IA-64 ELF port uses this 1460 derived hash table to keep information specific to the IA-64 ElF 1461 linker (without using static variables). */ 1462 1463 static struct bfd_link_hash_table * 1464 elfNN_ia64_hash_table_create (bfd *abfd) 1465 { 1466 struct elfNN_ia64_link_hash_table *ret; 1467 1468 ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); 1469 if (!ret) 1470 return NULL; 1471 1472 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, 1473 elfNN_ia64_new_elf_hash_entry, 1474 sizeof (struct elfNN_ia64_link_hash_entry), 1475 IA64_ELF_DATA)) 1476 { 1477 free (ret); 1478 return NULL; 1479 } 1480 1481 ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash, 1482 elfNN_ia64_local_htab_eq, NULL); 1483 ret->loc_hash_memory = objalloc_create (); 1484 if (!ret->loc_hash_table || !ret->loc_hash_memory) 1485 { 1486 elfNN_ia64_link_hash_table_free (abfd); 1487 return NULL; 1488 } 1489 ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free; 1490 1491 return &ret->root.root; 1492 } 1493 1494 /* Traverse both local and global hash tables. */ 1495 1496 struct elfNN_ia64_dyn_sym_traverse_data 1497 { 1498 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *); 1499 void * data; 1500 }; 1501 1502 static bfd_boolean 1503 elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, 1504 void * xdata) 1505 { 1506 struct elfNN_ia64_link_hash_entry *entry 1507 = (struct elfNN_ia64_link_hash_entry *) xentry; 1508 struct elfNN_ia64_dyn_sym_traverse_data *data 1509 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; 1510 struct elfNN_ia64_dyn_sym_info *dyn_i; 1511 unsigned int count; 1512 1513 for (count = entry->count, dyn_i = entry->info; 1514 count != 0; 1515 count--, dyn_i++) 1516 if (! (*data->func) (dyn_i, data->data)) 1517 return FALSE; 1518 return TRUE; 1519 } 1520 1521 static bfd_boolean 1522 elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata) 1523 { 1524 struct elfNN_ia64_local_hash_entry *entry 1525 = (struct elfNN_ia64_local_hash_entry *) *slot; 1526 struct elfNN_ia64_dyn_sym_traverse_data *data 1527 = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; 1528 struct elfNN_ia64_dyn_sym_info *dyn_i; 1529 unsigned int count; 1530 1531 for (count = entry->count, dyn_i = entry->info; 1532 count != 0; 1533 count--, dyn_i++) 1534 if (! (*data->func) (dyn_i, data->data)) 1535 return FALSE; 1536 return TRUE; 1537 } 1538 1539 static void 1540 elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info, 1541 bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *), 1542 void * data) 1543 { 1544 struct elfNN_ia64_dyn_sym_traverse_data xdata; 1545 1546 xdata.func = func; 1547 xdata.data = data; 1548 1549 elf_link_hash_traverse (&ia64_info->root, 1550 elfNN_ia64_global_dyn_sym_thunk, &xdata); 1551 htab_traverse (ia64_info->loc_hash_table, 1552 elfNN_ia64_local_dyn_sym_thunk, &xdata); 1553 } 1554 1555 static bfd_boolean 1557 elfNN_ia64_create_dynamic_sections (bfd *abfd, 1558 struct bfd_link_info *info) 1559 { 1560 struct elfNN_ia64_link_hash_table *ia64_info; 1561 asection *s; 1562 1563 if (! _bfd_elf_create_dynamic_sections (abfd, info)) 1564 return FALSE; 1565 1566 ia64_info = elfNN_ia64_hash_table (info); 1567 if (ia64_info == NULL) 1568 return FALSE; 1569 1570 { 1571 flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot); 1572 bfd_set_section_flags (abfd, ia64_info->root.sgot, 1573 SEC_SMALL_DATA | flags); 1574 /* The .got section is always aligned at 8 bytes. */ 1575 if (! bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3)) 1576 return FALSE; 1577 } 1578 1579 if (!get_pltoff (abfd, info, ia64_info)) 1580 return FALSE; 1581 1582 s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff", 1583 (SEC_ALLOC | SEC_LOAD 1584 | SEC_HAS_CONTENTS 1585 | SEC_IN_MEMORY 1586 | SEC_LINKER_CREATED 1587 | SEC_READONLY)); 1588 if (s == NULL 1589 || !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN)) 1590 return FALSE; 1591 ia64_info->rel_pltoff_sec = s; 1592 1593 return TRUE; 1594 } 1595 1596 /* Find and/or create a hash entry for local symbol. */ 1597 static struct elfNN_ia64_local_hash_entry * 1598 get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info, 1599 bfd *abfd, const Elf_Internal_Rela *rel, 1600 bfd_boolean create) 1601 { 1602 struct elfNN_ia64_local_hash_entry e, *ret; 1603 asection *sec = abfd->sections; 1604 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, 1605 ELFNN_R_SYM (rel->r_info)); 1606 void **slot; 1607 1608 e.id = sec->id; 1609 e.r_sym = ELFNN_R_SYM (rel->r_info); 1610 slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, 1611 create ? INSERT : NO_INSERT); 1612 1613 if (!slot) 1614 return NULL; 1615 1616 if (*slot) 1617 return (struct elfNN_ia64_local_hash_entry *) *slot; 1618 1619 ret = (struct elfNN_ia64_local_hash_entry *) 1620 objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, 1621 sizeof (struct elfNN_ia64_local_hash_entry)); 1622 if (ret) 1623 { 1624 memset (ret, 0, sizeof (*ret)); 1625 ret->id = sec->id; 1626 ret->r_sym = ELFNN_R_SYM (rel->r_info); 1627 *slot = ret; 1628 } 1629 return ret; 1630 } 1631 1632 /* Used to sort elfNN_ia64_dyn_sym_info array. */ 1633 1634 static int 1635 addend_compare (const void *xp, const void *yp) 1636 { 1637 const struct elfNN_ia64_dyn_sym_info *x 1638 = (const struct elfNN_ia64_dyn_sym_info *) xp; 1639 const struct elfNN_ia64_dyn_sym_info *y 1640 = (const struct elfNN_ia64_dyn_sym_info *) yp; 1641 1642 return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; 1643 } 1644 1645 /* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */ 1646 1647 static unsigned int 1648 sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info, 1649 unsigned int count) 1650 { 1651 bfd_vma curr, prev, got_offset; 1652 unsigned int i, kept, dupes, diff, dest, src, len; 1653 1654 qsort (info, count, sizeof (*info), addend_compare); 1655 1656 /* Find the first duplicate. */ 1657 prev = info [0].addend; 1658 got_offset = info [0].got_offset; 1659 for (i = 1; i < count; i++) 1660 { 1661 curr = info [i].addend; 1662 if (curr == prev) 1663 { 1664 /* For duplicates, make sure that GOT_OFFSET is valid. */ 1665 if (got_offset == (bfd_vma) -1) 1666 got_offset = info [i].got_offset; 1667 break; 1668 } 1669 got_offset = info [i].got_offset; 1670 prev = curr; 1671 } 1672 1673 /* We may move a block of elements to here. */ 1674 dest = i++; 1675 1676 /* Remove duplicates. */ 1677 if (i < count) 1678 { 1679 while (i < count) 1680 { 1681 /* For duplicates, make sure that the kept one has a valid 1682 got_offset. */ 1683 kept = dest - 1; 1684 if (got_offset != (bfd_vma) -1) 1685 info [kept].got_offset = got_offset; 1686 1687 curr = info [i].addend; 1688 got_offset = info [i].got_offset; 1689 1690 /* Move a block of elements whose first one is different from 1691 the previous. */ 1692 if (curr == prev) 1693 { 1694 for (src = i + 1; src < count; src++) 1695 { 1696 if (info [src].addend != curr) 1697 break; 1698 /* For duplicates, make sure that GOT_OFFSET is 1699 valid. */ 1700 if (got_offset == (bfd_vma) -1) 1701 got_offset = info [src].got_offset; 1702 } 1703 1704 /* Make sure that the kept one has a valid got_offset. */ 1705 if (got_offset != (bfd_vma) -1) 1706 info [kept].got_offset = got_offset; 1707 } 1708 else 1709 src = i; 1710 1711 if (src >= count) 1712 break; 1713 1714 /* Find the next duplicate. SRC will be kept. */ 1715 prev = info [src].addend; 1716 got_offset = info [src].got_offset; 1717 for (dupes = src + 1; dupes < count; dupes ++) 1718 { 1719 curr = info [dupes].addend; 1720 if (curr == prev) 1721 { 1722 /* Make sure that got_offset is valid. */ 1723 if (got_offset == (bfd_vma) -1) 1724 got_offset = info [dupes].got_offset; 1725 1726 /* For duplicates, make sure that the kept one has 1727 a valid got_offset. */ 1728 if (got_offset != (bfd_vma) -1) 1729 info [dupes - 1].got_offset = got_offset; 1730 break; 1731 } 1732 got_offset = info [dupes].got_offset; 1733 prev = curr; 1734 } 1735 1736 /* How much to move. */ 1737 len = dupes - src; 1738 i = dupes + 1; 1739 1740 if (len == 1 && dupes < count) 1741 { 1742 /* If we only move 1 element, we combine it with the next 1743 one. There must be at least a duplicate. Find the 1744 next different one. */ 1745 for (diff = dupes + 1, src++; diff < count; diff++, src++) 1746 { 1747 if (info [diff].addend != curr) 1748 break; 1749 /* Make sure that got_offset is valid. */ 1750 if (got_offset == (bfd_vma) -1) 1751 got_offset = info [diff].got_offset; 1752 } 1753 1754 /* Makre sure that the last duplicated one has an valid 1755 offset. */ 1756 BFD_ASSERT (curr == prev); 1757 if (got_offset != (bfd_vma) -1) 1758 info [diff - 1].got_offset = got_offset; 1759 1760 if (diff < count) 1761 { 1762 /* Find the next duplicate. Track the current valid 1763 offset. */ 1764 prev = info [diff].addend; 1765 got_offset = info [diff].got_offset; 1766 for (dupes = diff + 1; dupes < count; dupes ++) 1767 { 1768 curr = info [dupes].addend; 1769 if (curr == prev) 1770 { 1771 /* For duplicates, make sure that GOT_OFFSET 1772 is valid. */ 1773 if (got_offset == (bfd_vma) -1) 1774 got_offset = info [dupes].got_offset; 1775 break; 1776 } 1777 got_offset = info [dupes].got_offset; 1778 prev = curr; 1779 diff++; 1780 } 1781 1782 len = diff - src + 1; 1783 i = diff + 1; 1784 } 1785 } 1786 1787 memmove (&info [dest], &info [src], len * sizeof (*info)); 1788 1789 dest += len; 1790 } 1791 1792 count = dest; 1793 } 1794 else 1795 { 1796 /* When we get here, either there is no duplicate at all or 1797 the only duplicate is the last element. */ 1798 if (dest < count) 1799 { 1800 /* If the last element is a duplicate, make sure that the 1801 kept one has a valid got_offset. We also update count. */ 1802 if (got_offset != (bfd_vma) -1) 1803 info [dest - 1].got_offset = got_offset; 1804 count = dest; 1805 } 1806 } 1807 1808 return count; 1809 } 1810 1811 /* Find and/or create a descriptor for dynamic symbol info. This will 1812 vary based on global or local symbol, and the addend to the reloc. 1813 1814 We don't sort when inserting. Also, we sort and eliminate 1815 duplicates if there is an unsorted section. Typically, this will 1816 only happen once, because we do all insertions before lookups. We 1817 then use bsearch to do a lookup. This also allows lookups to be 1818 fast. So we have fast insertion (O(log N) due to duplicate check), 1819 fast lookup (O(log N)) and one sort (O(N log N) expected time). 1820 Previously, all lookups were O(N) because of the use of the linked 1821 list and also all insertions were O(N) because of the check for 1822 duplicates. There are some complications here because the array 1823 size grows occasionally, which may add an O(N) factor, but this 1824 should be rare. Also, we free the excess array allocation, which 1825 requires a copy which is O(N), but this only happens once. */ 1826 1827 static struct elfNN_ia64_dyn_sym_info * 1828 get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info, 1829 struct elf_link_hash_entry *h, bfd *abfd, 1830 const Elf_Internal_Rela *rel, bfd_boolean create) 1831 { 1832 struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; 1833 unsigned int *count_p, *sorted_count_p, *size_p; 1834 unsigned int count, sorted_count, size; 1835 bfd_vma addend = rel ? rel->r_addend : 0; 1836 bfd_size_type amt; 1837 1838 if (h) 1839 { 1840 struct elfNN_ia64_link_hash_entry *global_h; 1841 1842 global_h = (struct elfNN_ia64_link_hash_entry *) h; 1843 info_p = &global_h->info; 1844 count_p = &global_h->count; 1845 sorted_count_p = &global_h->sorted_count; 1846 size_p = &global_h->size; 1847 } 1848 else 1849 { 1850 struct elfNN_ia64_local_hash_entry *loc_h; 1851 1852 loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); 1853 if (!loc_h) 1854 { 1855 BFD_ASSERT (!create); 1856 return NULL; 1857 } 1858 1859 info_p = &loc_h->info; 1860 count_p = &loc_h->count; 1861 sorted_count_p = &loc_h->sorted_count; 1862 size_p = &loc_h->size; 1863 } 1864 1865 count = *count_p; 1866 sorted_count = *sorted_count_p; 1867 size = *size_p; 1868 info = *info_p; 1869 if (create) 1870 { 1871 /* When we create the array, we don't check for duplicates, 1872 except in the previously sorted section if one exists, and 1873 against the last inserted entry. This allows insertions to 1874 be fast. */ 1875 if (info) 1876 { 1877 if (sorted_count) 1878 { 1879 /* Try bsearch first on the sorted section. */ 1880 key.addend = addend; 1881 dyn_i = bsearch (&key, info, sorted_count, 1882 sizeof (*info), addend_compare); 1883 1884 if (dyn_i) 1885 { 1886 return dyn_i; 1887 } 1888 } 1889 1890 /* Do a quick check for the last inserted entry. */ 1891 dyn_i = info + count - 1; 1892 if (dyn_i->addend == addend) 1893 { 1894 return dyn_i; 1895 } 1896 } 1897 1898 if (size == 0) 1899 { 1900 /* It is the very first element. We create the array of size 1901 1. */ 1902 size = 1; 1903 amt = size * sizeof (*info); 1904 info = bfd_malloc (amt); 1905 } 1906 else if (size <= count) 1907 { 1908 /* We double the array size every time when we reach the 1909 size limit. */ 1910 size += size; 1911 amt = size * sizeof (*info); 1912 info = bfd_realloc (info, amt); 1913 } 1914 else 1915 goto has_space; 1916 1917 if (info == NULL) 1918 return NULL; 1919 *size_p = size; 1920 *info_p = info; 1921 1922 has_space: 1923 /* Append the new one to the array. */ 1924 dyn_i = info + count; 1925 memset (dyn_i, 0, sizeof (*dyn_i)); 1926 dyn_i->got_offset = (bfd_vma) -1; 1927 dyn_i->addend = addend; 1928 1929 /* We increment count only since the new ones are unsorted and 1930 may have duplicate. */ 1931 (*count_p)++; 1932 } 1933 else 1934 { 1935 /* It is a lookup without insertion. Sort array if part of the 1936 array isn't sorted. */ 1937 if (count != sorted_count) 1938 { 1939 count = sort_dyn_sym_info (info, count); 1940 *count_p = count; 1941 *sorted_count_p = count; 1942 } 1943 1944 /* Free unused memory. */ 1945 if (size != count) 1946 { 1947 amt = count * sizeof (*info); 1948 info = bfd_malloc (amt); 1949 if (info != NULL) 1950 { 1951 memcpy (info, *info_p, amt); 1952 free (*info_p); 1953 *size_p = count; 1954 *info_p = info; 1955 } 1956 } 1957 1958 key.addend = addend; 1959 dyn_i = bsearch (&key, info, count, 1960 sizeof (*info), addend_compare); 1961 } 1962 1963 return dyn_i; 1964 } 1965 1966 static asection * 1967 get_got (bfd *abfd, struct bfd_link_info *info, 1968 struct elfNN_ia64_link_hash_table *ia64_info) 1969 { 1970 asection *got; 1971 bfd *dynobj; 1972 1973 got = ia64_info->root.sgot; 1974 if (!got) 1975 { 1976 flagword flags; 1977 1978 dynobj = ia64_info->root.dynobj; 1979 if (!dynobj) 1980 ia64_info->root.dynobj = dynobj = abfd; 1981 if (!_bfd_elf_create_got_section (dynobj, info)) 1982 return NULL; 1983 1984 got = ia64_info->root.sgot; 1985 1986 /* The .got section is always aligned at 8 bytes. */ 1987 if (!bfd_set_section_alignment (abfd, got, 3)) 1988 return NULL; 1989 1990 flags = bfd_get_section_flags (abfd, got); 1991 if (! bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags)) 1992 return NULL; 1993 } 1994 1995 return got; 1996 } 1997 1998 /* Create function descriptor section (.opd). This section is called .opd 1999 because it contains "official procedure descriptors". The "official" 2000 refers to the fact that these descriptors are used when taking the address 2001 of a procedure, thus ensuring a unique address for each procedure. */ 2002 2003 static asection * 2004 get_fptr (bfd *abfd, struct bfd_link_info *info, 2005 struct elfNN_ia64_link_hash_table *ia64_info) 2006 { 2007 asection *fptr; 2008 bfd *dynobj; 2009 2010 fptr = ia64_info->fptr_sec; 2011 if (!fptr) 2012 { 2013 dynobj = ia64_info->root.dynobj; 2014 if (!dynobj) 2015 ia64_info->root.dynobj = dynobj = abfd; 2016 2017 fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd", 2018 (SEC_ALLOC 2019 | SEC_LOAD 2020 | SEC_HAS_CONTENTS 2021 | SEC_IN_MEMORY 2022 | (bfd_link_pie (info) 2023 ? 0 : SEC_READONLY) 2024 | SEC_LINKER_CREATED)); 2025 if (!fptr 2026 || !bfd_set_section_alignment (abfd, fptr, 4)) 2027 { 2028 BFD_ASSERT (0); 2029 return NULL; 2030 } 2031 2032 ia64_info->fptr_sec = fptr; 2033 2034 if (bfd_link_pie (info)) 2035 { 2036 asection *fptr_rel; 2037 fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd", 2038 (SEC_ALLOC | SEC_LOAD 2039 | SEC_HAS_CONTENTS 2040 | SEC_IN_MEMORY 2041 | SEC_LINKER_CREATED 2042 | SEC_READONLY)); 2043 if (fptr_rel == NULL 2044 || !bfd_set_section_alignment (abfd, fptr_rel, 2045 LOG_SECTION_ALIGN)) 2046 { 2047 BFD_ASSERT (0); 2048 return NULL; 2049 } 2050 2051 ia64_info->rel_fptr_sec = fptr_rel; 2052 } 2053 } 2054 2055 return fptr; 2056 } 2057 2058 static asection * 2059 get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED, 2060 struct elfNN_ia64_link_hash_table *ia64_info) 2061 { 2062 asection *pltoff; 2063 bfd *dynobj; 2064 2065 pltoff = ia64_info->pltoff_sec; 2066 if (!pltoff) 2067 { 2068 dynobj = ia64_info->root.dynobj; 2069 if (!dynobj) 2070 ia64_info->root.dynobj = dynobj = abfd; 2071 2072 pltoff = bfd_make_section_anyway_with_flags (dynobj, 2073 ELF_STRING_ia64_pltoff, 2074 (SEC_ALLOC 2075 | SEC_LOAD 2076 | SEC_HAS_CONTENTS 2077 | SEC_IN_MEMORY 2078 | SEC_SMALL_DATA 2079 | SEC_LINKER_CREATED)); 2080 if (!pltoff 2081 || !bfd_set_section_alignment (abfd, pltoff, 4)) 2082 { 2083 BFD_ASSERT (0); 2084 return NULL; 2085 } 2086 2087 ia64_info->pltoff_sec = pltoff; 2088 } 2089 2090 return pltoff; 2091 } 2092 2093 static asection * 2094 get_reloc_section (bfd *abfd, 2095 struct elfNN_ia64_link_hash_table *ia64_info, 2096 asection *sec, bfd_boolean create) 2097 { 2098 const char *srel_name; 2099 asection *srel; 2100 bfd *dynobj; 2101 2102 srel_name = (bfd_elf_string_from_elf_section 2103 (abfd, elf_elfheader(abfd)->e_shstrndx, 2104 _bfd_elf_single_rel_hdr (sec)->sh_name)); 2105 if (srel_name == NULL) 2106 return NULL; 2107 2108 dynobj = ia64_info->root.dynobj; 2109 if (!dynobj) 2110 ia64_info->root.dynobj = dynobj = abfd; 2111 2112 srel = bfd_get_linker_section (dynobj, srel_name); 2113 if (srel == NULL && create) 2114 { 2115 srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, 2116 (SEC_ALLOC | SEC_LOAD 2117 | SEC_HAS_CONTENTS 2118 | SEC_IN_MEMORY 2119 | SEC_LINKER_CREATED 2120 | SEC_READONLY)); 2121 if (srel == NULL 2122 || !bfd_set_section_alignment (dynobj, srel, 2123 LOG_SECTION_ALIGN)) 2124 return NULL; 2125 } 2126 2127 return srel; 2128 } 2129 2130 static bfd_boolean 2131 count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i, 2132 asection *srel, int type, bfd_boolean reltext) 2133 { 2134 struct elfNN_ia64_dyn_reloc_entry *rent; 2135 2136 for (rent = dyn_i->reloc_entries; rent; rent = rent->next) 2137 if (rent->srel == srel && rent->type == type) 2138 break; 2139 2140 if (!rent) 2141 { 2142 rent = ((struct elfNN_ia64_dyn_reloc_entry *) 2143 bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); 2144 if (!rent) 2145 return FALSE; 2146 2147 rent->next = dyn_i->reloc_entries; 2148 rent->srel = srel; 2149 rent->type = type; 2150 rent->count = 0; 2151 dyn_i->reloc_entries = rent; 2152 } 2153 rent->reltext = reltext; 2154 rent->count++; 2155 2156 return TRUE; 2157 } 2158 2159 static bfd_boolean 2160 elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, 2161 asection *sec, 2162 const Elf_Internal_Rela *relocs) 2163 { 2164 struct elfNN_ia64_link_hash_table *ia64_info; 2165 const Elf_Internal_Rela *relend; 2166 Elf_Internal_Shdr *symtab_hdr; 2167 const Elf_Internal_Rela *rel; 2168 asection *got, *fptr, *srel, *pltoff; 2169 enum { 2170 NEED_GOT = 1, 2171 NEED_GOTX = 2, 2172 NEED_FPTR = 4, 2173 NEED_PLTOFF = 8, 2174 NEED_MIN_PLT = 16, 2175 NEED_FULL_PLT = 32, 2176 NEED_DYNREL = 64, 2177 NEED_LTOFF_FPTR = 128, 2178 NEED_TPREL = 256, 2179 NEED_DTPMOD = 512, 2180 NEED_DTPREL = 1024 2181 }; 2182 int need_entry; 2183 struct elf_link_hash_entry *h; 2184 unsigned long r_symndx; 2185 bfd_boolean maybe_dynamic; 2186 2187 if (bfd_link_relocatable (info)) 2188 return TRUE; 2189 2190 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 2191 ia64_info = elfNN_ia64_hash_table (info); 2192 if (ia64_info == NULL) 2193 return FALSE; 2194 2195 got = fptr = srel = pltoff = NULL; 2196 2197 relend = relocs + sec->reloc_count; 2198 2199 /* We scan relocations first to create dynamic relocation arrays. We 2200 modified get_dyn_sym_info to allow fast insertion and support fast 2201 lookup in the next loop. */ 2202 for (rel = relocs; rel < relend; ++rel) 2203 { 2204 r_symndx = ELFNN_R_SYM (rel->r_info); 2205 if (r_symndx >= symtab_hdr->sh_info) 2206 { 2207 long indx = r_symndx - symtab_hdr->sh_info; 2208 h = elf_sym_hashes (abfd)[indx]; 2209 while (h->root.type == bfd_link_hash_indirect 2210 || h->root.type == bfd_link_hash_warning) 2211 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2212 } 2213 else 2214 h = NULL; 2215 2216 if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) 2217 continue; 2218 2219 /* We can only get preliminary data on whether a symbol is 2220 locally or externally defined, as not all of the input files 2221 have yet been processed. Do something with what we know, as 2222 this may help reduce memory usage and processing time later. */ 2223 maybe_dynamic = (h && ((!bfd_link_executable (info) 2224 && (!SYMBOLIC_BIND (info, h) 2225 || info->unresolved_syms_in_shared_libs == RM_IGNORE)) 2226 || !h->def_regular 2227 || h->root.type == bfd_link_hash_defweak)); 2228 2229 need_entry = 0; 2230 switch (ELFNN_R_TYPE (rel->r_info)) 2231 { 2232 case R_IA64_TPREL64MSB: 2233 case R_IA64_TPREL64LSB: 2234 if (bfd_link_pic (info) || maybe_dynamic) 2235 need_entry = NEED_DYNREL; 2236 break; 2237 2238 case R_IA64_LTOFF_TPREL22: 2239 need_entry = NEED_TPREL; 2240 if (bfd_link_pic (info)) 2241 info->flags |= DF_STATIC_TLS; 2242 break; 2243 2244 case R_IA64_DTPREL32MSB: 2245 case R_IA64_DTPREL32LSB: 2246 case R_IA64_DTPREL64MSB: 2247 case R_IA64_DTPREL64LSB: 2248 if (bfd_link_pic (info) || maybe_dynamic) 2249 need_entry = NEED_DYNREL; 2250 break; 2251 2252 case R_IA64_LTOFF_DTPREL22: 2253 need_entry = NEED_DTPREL; 2254 break; 2255 2256 case R_IA64_DTPMOD64MSB: 2257 case R_IA64_DTPMOD64LSB: 2258 if (bfd_link_pic (info) || maybe_dynamic) 2259 need_entry = NEED_DYNREL; 2260 break; 2261 2262 case R_IA64_LTOFF_DTPMOD22: 2263 need_entry = NEED_DTPMOD; 2264 break; 2265 2266 case R_IA64_LTOFF_FPTR22: 2267 case R_IA64_LTOFF_FPTR64I: 2268 case R_IA64_LTOFF_FPTR32MSB: 2269 case R_IA64_LTOFF_FPTR32LSB: 2270 case R_IA64_LTOFF_FPTR64MSB: 2271 case R_IA64_LTOFF_FPTR64LSB: 2272 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; 2273 break; 2274 2275 case R_IA64_FPTR64I: 2276 case R_IA64_FPTR32MSB: 2277 case R_IA64_FPTR32LSB: 2278 case R_IA64_FPTR64MSB: 2279 case R_IA64_FPTR64LSB: 2280 if (bfd_link_pic (info) || h) 2281 need_entry = NEED_FPTR | NEED_DYNREL; 2282 else 2283 need_entry = NEED_FPTR; 2284 break; 2285 2286 case R_IA64_LTOFF22: 2287 case R_IA64_LTOFF64I: 2288 need_entry = NEED_GOT; 2289 break; 2290 2291 case R_IA64_LTOFF22X: 2292 need_entry = NEED_GOTX; 2293 break; 2294 2295 case R_IA64_PLTOFF22: 2296 case R_IA64_PLTOFF64I: 2297 case R_IA64_PLTOFF64MSB: 2298 case R_IA64_PLTOFF64LSB: 2299 need_entry = NEED_PLTOFF; 2300 if (h) 2301 { 2302 if (maybe_dynamic) 2303 need_entry |= NEED_MIN_PLT; 2304 } 2305 else 2306 { 2307 (*info->callbacks->warning) 2308 (info, _("@pltoff reloc against local symbol"), 0, 2309 abfd, 0, (bfd_vma) 0); 2310 } 2311 break; 2312 2313 case R_IA64_PCREL21B: 2314 case R_IA64_PCREL60B: 2315 /* Depending on where this symbol is defined, we may or may not 2316 need a full plt entry. Only skip if we know we'll not need 2317 the entry -- static or symbolic, and the symbol definition 2318 has already been seen. */ 2319 if (maybe_dynamic && rel->r_addend == 0) 2320 need_entry = NEED_FULL_PLT; 2321 break; 2322 2323 case R_IA64_IMM14: 2324 case R_IA64_IMM22: 2325 case R_IA64_IMM64: 2326 case R_IA64_DIR32MSB: 2327 case R_IA64_DIR32LSB: 2328 case R_IA64_DIR64MSB: 2329 case R_IA64_DIR64LSB: 2330 /* Shared objects will always need at least a REL relocation. */ 2331 if (bfd_link_pic (info) || maybe_dynamic) 2332 need_entry = NEED_DYNREL; 2333 break; 2334 2335 case R_IA64_IPLTMSB: 2336 case R_IA64_IPLTLSB: 2337 /* Shared objects will always need at least a REL relocation. */ 2338 if (bfd_link_pic (info) || maybe_dynamic) 2339 need_entry = NEED_DYNREL; 2340 break; 2341 2342 case R_IA64_PCREL22: 2343 case R_IA64_PCREL64I: 2344 case R_IA64_PCREL32MSB: 2345 case R_IA64_PCREL32LSB: 2346 case R_IA64_PCREL64MSB: 2347 case R_IA64_PCREL64LSB: 2348 if (maybe_dynamic) 2349 need_entry = NEED_DYNREL; 2350 break; 2351 } 2352 2353 if (!need_entry) 2354 continue; 2355 2356 if ((need_entry & NEED_FPTR) != 0 2357 && rel->r_addend) 2358 { 2359 (*info->callbacks->warning) 2360 (info, _("non-zero addend in @fptr reloc"), 0, 2361 abfd, 0, (bfd_vma) 0); 2362 } 2363 2364 if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) 2365 return FALSE; 2366 } 2367 2368 /* Now, we only do lookup without insertion, which is very fast 2369 with the modified get_dyn_sym_info. */ 2370 for (rel = relocs; rel < relend; ++rel) 2371 { 2372 struct elfNN_ia64_dyn_sym_info *dyn_i; 2373 int dynrel_type = R_IA64_NONE; 2374 2375 r_symndx = ELFNN_R_SYM (rel->r_info); 2376 if (r_symndx >= symtab_hdr->sh_info) 2377 { 2378 /* We're dealing with a global symbol -- find its hash entry 2379 and mark it as being referenced. */ 2380 long indx = r_symndx - symtab_hdr->sh_info; 2381 h = elf_sym_hashes (abfd)[indx]; 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 /* PR15323, ref flags aren't set for references in the same 2387 object. */ 2388 h->ref_regular = 1; 2389 } 2390 else 2391 h = NULL; 2392 2393 if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) 2394 continue; 2395 2396 /* We can only get preliminary data on whether a symbol is 2397 locally or externally defined, as not all of the input files 2398 have yet been processed. Do something with what we know, as 2399 this may help reduce memory usage and processing time later. */ 2400 maybe_dynamic = (h && ((!bfd_link_executable (info) 2401 && (!SYMBOLIC_BIND (info, h) 2402 || info->unresolved_syms_in_shared_libs == RM_IGNORE)) 2403 || !h->def_regular 2404 || h->root.type == bfd_link_hash_defweak)); 2405 2406 need_entry = 0; 2407 switch (ELFNN_R_TYPE (rel->r_info)) 2408 { 2409 case R_IA64_TPREL64MSB: 2410 case R_IA64_TPREL64LSB: 2411 if (bfd_link_pic (info) || maybe_dynamic) 2412 need_entry = NEED_DYNREL; 2413 dynrel_type = R_IA64_TPREL64LSB; 2414 if (bfd_link_pic (info)) 2415 info->flags |= DF_STATIC_TLS; 2416 break; 2417 2418 case R_IA64_LTOFF_TPREL22: 2419 need_entry = NEED_TPREL; 2420 if (bfd_link_pic (info)) 2421 info->flags |= DF_STATIC_TLS; 2422 break; 2423 2424 case R_IA64_DTPREL32MSB: 2425 case R_IA64_DTPREL32LSB: 2426 case R_IA64_DTPREL64MSB: 2427 case R_IA64_DTPREL64LSB: 2428 if (bfd_link_pic (info) || maybe_dynamic) 2429 need_entry = NEED_DYNREL; 2430 dynrel_type = R_IA64_DTPRELNNLSB; 2431 break; 2432 2433 case R_IA64_LTOFF_DTPREL22: 2434 need_entry = NEED_DTPREL; 2435 break; 2436 2437 case R_IA64_DTPMOD64MSB: 2438 case R_IA64_DTPMOD64LSB: 2439 if (bfd_link_pic (info) || maybe_dynamic) 2440 need_entry = NEED_DYNREL; 2441 dynrel_type = R_IA64_DTPMOD64LSB; 2442 break; 2443 2444 case R_IA64_LTOFF_DTPMOD22: 2445 need_entry = NEED_DTPMOD; 2446 break; 2447 2448 case R_IA64_LTOFF_FPTR22: 2449 case R_IA64_LTOFF_FPTR64I: 2450 case R_IA64_LTOFF_FPTR32MSB: 2451 case R_IA64_LTOFF_FPTR32LSB: 2452 case R_IA64_LTOFF_FPTR64MSB: 2453 case R_IA64_LTOFF_FPTR64LSB: 2454 need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; 2455 break; 2456 2457 case R_IA64_FPTR64I: 2458 case R_IA64_FPTR32MSB: 2459 case R_IA64_FPTR32LSB: 2460 case R_IA64_FPTR64MSB: 2461 case R_IA64_FPTR64LSB: 2462 if (bfd_link_pic (info) || h) 2463 need_entry = NEED_FPTR | NEED_DYNREL; 2464 else 2465 need_entry = NEED_FPTR; 2466 dynrel_type = R_IA64_FPTRNNLSB; 2467 break; 2468 2469 case R_IA64_LTOFF22: 2470 case R_IA64_LTOFF64I: 2471 need_entry = NEED_GOT; 2472 break; 2473 2474 case R_IA64_LTOFF22X: 2475 need_entry = NEED_GOTX; 2476 break; 2477 2478 case R_IA64_PLTOFF22: 2479 case R_IA64_PLTOFF64I: 2480 case R_IA64_PLTOFF64MSB: 2481 case R_IA64_PLTOFF64LSB: 2482 need_entry = NEED_PLTOFF; 2483 if (h) 2484 { 2485 if (maybe_dynamic) 2486 need_entry |= NEED_MIN_PLT; 2487 } 2488 break; 2489 2490 case R_IA64_PCREL21B: 2491 case R_IA64_PCREL60B: 2492 /* Depending on where this symbol is defined, we may or may not 2493 need a full plt entry. Only skip if we know we'll not need 2494 the entry -- static or symbolic, and the symbol definition 2495 has already been seen. */ 2496 if (maybe_dynamic && rel->r_addend == 0) 2497 need_entry = NEED_FULL_PLT; 2498 break; 2499 2500 case R_IA64_IMM14: 2501 case R_IA64_IMM22: 2502 case R_IA64_IMM64: 2503 case R_IA64_DIR32MSB: 2504 case R_IA64_DIR32LSB: 2505 case R_IA64_DIR64MSB: 2506 case R_IA64_DIR64LSB: 2507 /* Shared objects will always need at least a REL relocation. */ 2508 if (bfd_link_pic (info) || maybe_dynamic) 2509 need_entry = NEED_DYNREL; 2510 dynrel_type = R_IA64_DIRNNLSB; 2511 break; 2512 2513 case R_IA64_IPLTMSB: 2514 case R_IA64_IPLTLSB: 2515 /* Shared objects will always need at least a REL relocation. */ 2516 if (bfd_link_pic (info) || maybe_dynamic) 2517 need_entry = NEED_DYNREL; 2518 dynrel_type = R_IA64_IPLTLSB; 2519 break; 2520 2521 case R_IA64_PCREL22: 2522 case R_IA64_PCREL64I: 2523 case R_IA64_PCREL32MSB: 2524 case R_IA64_PCREL32LSB: 2525 case R_IA64_PCREL64MSB: 2526 case R_IA64_PCREL64LSB: 2527 if (maybe_dynamic) 2528 need_entry = NEED_DYNREL; 2529 dynrel_type = R_IA64_PCRELNNLSB; 2530 break; 2531 } 2532 2533 if (!need_entry) 2534 continue; 2535 2536 dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); 2537 2538 /* Record whether or not this is a local symbol. */ 2539 dyn_i->h = h; 2540 2541 /* Create what's needed. */ 2542 if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL 2543 | NEED_DTPMOD | NEED_DTPREL)) 2544 { 2545 if (!got) 2546 { 2547 got = get_got (abfd, info, ia64_info); 2548 if (!got) 2549 return FALSE; 2550 } 2551 if (need_entry & NEED_GOT) 2552 dyn_i->want_got = 1; 2553 if (need_entry & NEED_GOTX) 2554 dyn_i->want_gotx = 1; 2555 if (need_entry & NEED_TPREL) 2556 dyn_i->want_tprel = 1; 2557 if (need_entry & NEED_DTPMOD) 2558 dyn_i->want_dtpmod = 1; 2559 if (need_entry & NEED_DTPREL) 2560 dyn_i->want_dtprel = 1; 2561 } 2562 if (need_entry & NEED_FPTR) 2563 { 2564 if (!fptr) 2565 { 2566 fptr = get_fptr (abfd, info, ia64_info); 2567 if (!fptr) 2568 return FALSE; 2569 } 2570 2571 /* FPTRs for shared libraries are allocated by the dynamic 2572 linker. Make sure this local symbol will appear in the 2573 dynamic symbol table. */ 2574 if (!h && bfd_link_pic (info)) 2575 { 2576 if (! (bfd_elf_link_record_local_dynamic_symbol 2577 (info, abfd, (long) r_symndx))) 2578 return FALSE; 2579 } 2580 2581 dyn_i->want_fptr = 1; 2582 } 2583 if (need_entry & NEED_LTOFF_FPTR) 2584 dyn_i->want_ltoff_fptr = 1; 2585 if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) 2586 { 2587 if (!ia64_info->root.dynobj) 2588 ia64_info->root.dynobj = abfd; 2589 h->needs_plt = 1; 2590 dyn_i->want_plt = 1; 2591 } 2592 if (need_entry & NEED_FULL_PLT) 2593 dyn_i->want_plt2 = 1; 2594 if (need_entry & NEED_PLTOFF) 2595 { 2596 /* This is needed here, in case @pltoff is used in a non-shared 2597 link. */ 2598 if (!pltoff) 2599 { 2600 pltoff = get_pltoff (abfd, info, ia64_info); 2601 if (!pltoff) 2602 return FALSE; 2603 } 2604 2605 dyn_i->want_pltoff = 1; 2606 } 2607 if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) 2608 { 2609 if (!srel) 2610 { 2611 srel = get_reloc_section (abfd, ia64_info, sec, TRUE); 2612 if (!srel) 2613 return FALSE; 2614 } 2615 if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type, 2616 (sec->flags & SEC_READONLY) != 0)) 2617 return FALSE; 2618 } 2619 } 2620 2621 return TRUE; 2622 } 2623 2624 /* For cleanliness, and potentially faster dynamic loading, allocate 2625 external GOT entries first. */ 2626 2627 static bfd_boolean 2628 allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i, 2629 void * data) 2630 { 2631 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; 2632 2633 if ((dyn_i->want_got || dyn_i->want_gotx) 2634 && ! dyn_i->want_fptr 2635 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) 2636 { 2637 dyn_i->got_offset = x->ofs; 2638 x->ofs += 8; 2639 } 2640 if (dyn_i->want_tprel) 2641 { 2642 dyn_i->tprel_offset = x->ofs; 2643 x->ofs += 8; 2644 } 2645 if (dyn_i->want_dtpmod) 2646 { 2647 if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) 2648 { 2649 dyn_i->dtpmod_offset = x->ofs; 2650 x->ofs += 8; 2651 } 2652 else 2653 { 2654 struct elfNN_ia64_link_hash_table *ia64_info; 2655 2656 ia64_info = elfNN_ia64_hash_table (x->info); 2657 if (ia64_info == NULL) 2658 return FALSE; 2659 2660 if (ia64_info->self_dtpmod_offset == (bfd_vma) -1) 2661 { 2662 ia64_info->self_dtpmod_offset = x->ofs; 2663 x->ofs += 8; 2664 } 2665 dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset; 2666 } 2667 } 2668 if (dyn_i->want_dtprel) 2669 { 2670 dyn_i->dtprel_offset = x->ofs; 2671 x->ofs += 8; 2672 } 2673 return TRUE; 2674 } 2675 2676 /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ 2677 2678 static bfd_boolean 2679 allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i, 2680 void * data) 2681 { 2682 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; 2683 2684 if (dyn_i->want_got 2685 && dyn_i->want_fptr 2686 && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB)) 2687 { 2688 dyn_i->got_offset = x->ofs; 2689 x->ofs += 8; 2690 } 2691 return TRUE; 2692 } 2693 2694 /* Lastly, allocate all the GOT entries for local data. */ 2695 2696 static bfd_boolean 2697 allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i, 2698 void * data) 2699 { 2700 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; 2701 2702 if ((dyn_i->want_got || dyn_i->want_gotx) 2703 && !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0)) 2704 { 2705 dyn_i->got_offset = x->ofs; 2706 x->ofs += 8; 2707 } 2708 return TRUE; 2709 } 2710 2711 /* Search for the index of a global symbol in it's defining object file. */ 2712 2713 static long 2714 global_sym_index (struct elf_link_hash_entry *h) 2715 { 2716 struct elf_link_hash_entry **p; 2717 bfd *obj; 2718 2719 BFD_ASSERT (h->root.type == bfd_link_hash_defined 2720 || h->root.type == bfd_link_hash_defweak); 2721 2722 obj = h->root.u.def.section->owner; 2723 for (p = elf_sym_hashes (obj); *p != h; ++p) 2724 continue; 2725 2726 return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info; 2727 } 2728 2729 /* Allocate function descriptors. We can do these for every function 2730 in a main executable that is not exported. */ 2731 2732 static bfd_boolean 2733 allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data) 2734 { 2735 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; 2736 2737 if (dyn_i->want_fptr) 2738 { 2739 struct elf_link_hash_entry *h = dyn_i->h; 2740 2741 if (h) 2742 while (h->root.type == bfd_link_hash_indirect 2743 || h->root.type == bfd_link_hash_warning) 2744 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2745 2746 if (!bfd_link_executable (x->info) 2747 && (!h 2748 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT 2749 && !UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, h)) 2750 || (h->root.type != bfd_link_hash_undefweak 2751 && h->root.type != bfd_link_hash_undefined))) 2752 { 2753 if (h && h->dynindx == -1) 2754 { 2755 BFD_ASSERT ((h->root.type == bfd_link_hash_defined) 2756 || (h->root.type == bfd_link_hash_defweak)); 2757 2758 if (!bfd_elf_link_record_local_dynamic_symbol 2759 (x->info, h->root.u.def.section->owner, 2760 global_sym_index (h))) 2761 return FALSE; 2762 } 2763 2764 dyn_i->want_fptr = 0; 2765 } 2766 else if (h == NULL || h->dynindx == -1) 2767 { 2768 dyn_i->fptr_offset = x->ofs; 2769 x->ofs += 16; 2770 } 2771 else 2772 dyn_i->want_fptr = 0; 2773 } 2774 return TRUE; 2775 } 2776 2777 /* Allocate all the minimal PLT entries. */ 2778 2779 static bfd_boolean 2780 allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, 2781 void * data) 2782 { 2783 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; 2784 2785 if (dyn_i->want_plt) 2786 { 2787 struct elf_link_hash_entry *h = dyn_i->h; 2788 2789 if (h) 2790 while (h->root.type == bfd_link_hash_indirect 2791 || h->root.type == bfd_link_hash_warning) 2792 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2793 2794 /* ??? Versioned symbols seem to lose NEEDS_PLT. */ 2795 if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0)) 2796 { 2797 bfd_size_type offset = x->ofs; 2798 if (offset == 0) 2799 offset = PLT_HEADER_SIZE; 2800 dyn_i->plt_offset = offset; 2801 x->ofs = offset + PLT_MIN_ENTRY_SIZE; 2802 2803 dyn_i->want_pltoff = 1; 2804 } 2805 else 2806 { 2807 dyn_i->want_plt = 0; 2808 dyn_i->want_plt2 = 0; 2809 } 2810 } 2811 return TRUE; 2812 } 2813 2814 /* Allocate all the full PLT entries. */ 2815 2816 static bfd_boolean 2817 allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, 2818 void * data) 2819 { 2820 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; 2821 2822 if (dyn_i->want_plt2) 2823 { 2824 struct elf_link_hash_entry *h = dyn_i->h; 2825 bfd_size_type ofs = x->ofs; 2826 2827 dyn_i->plt2_offset = ofs; 2828 x->ofs = ofs + PLT_FULL_ENTRY_SIZE; 2829 2830 while (h->root.type == bfd_link_hash_indirect 2831 || h->root.type == bfd_link_hash_warning) 2832 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2833 dyn_i->h->plt.offset = ofs; 2834 } 2835 return TRUE; 2836 } 2837 2838 /* Allocate all the PLTOFF entries requested by relocations and 2839 plt entries. We can't share space with allocated FPTR entries, 2840 because the latter are not necessarily addressable by the GP. 2841 ??? Relaxation might be able to determine that they are. */ 2842 2843 static bfd_boolean 2844 allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, 2845 void * data) 2846 { 2847 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; 2848 2849 if (dyn_i->want_pltoff) 2850 { 2851 dyn_i->pltoff_offset = x->ofs; 2852 x->ofs += 16; 2853 } 2854 return TRUE; 2855 } 2856 2857 /* Allocate dynamic relocations for those symbols that turned out 2858 to be dynamic. */ 2859 2860 static bfd_boolean 2861 allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i, 2862 void * data) 2863 { 2864 struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; 2865 struct elfNN_ia64_link_hash_table *ia64_info; 2866 struct elfNN_ia64_dyn_reloc_entry *rent; 2867 bfd_boolean dynamic_symbol, shared, resolved_zero; 2868 2869 ia64_info = elfNN_ia64_hash_table (x->info); 2870 if (ia64_info == NULL) 2871 return FALSE; 2872 2873 /* Note that this can't be used in relation to FPTR relocs below. */ 2874 dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0); 2875 2876 shared = bfd_link_pic (x->info); 2877 resolved_zero = (dyn_i->h 2878 && UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, 2879 dyn_i->h)); 2880 2881 /* Take care of the GOT and PLT relocations. */ 2882 2883 if ((!resolved_zero 2884 && (dynamic_symbol || shared) 2885 && (dyn_i->want_got || dyn_i->want_gotx)) 2886 || (dyn_i->want_ltoff_fptr 2887 && dyn_i->h 2888 && dyn_i->h->dynindx != -1)) 2889 { 2890 if (!dyn_i->want_ltoff_fptr 2891 || !bfd_link_pie (x->info) 2892 || dyn_i->h == NULL 2893 || dyn_i->h->root.type != bfd_link_hash_undefweak) 2894 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); 2895 } 2896 if ((dynamic_symbol || shared) && dyn_i->want_tprel) 2897 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); 2898 if (dynamic_symbol && dyn_i->want_dtpmod) 2899 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); 2900 if (dynamic_symbol && dyn_i->want_dtprel) 2901 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); 2902 2903 if (x->only_got) 2904 return TRUE; 2905 2906 if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) 2907 { 2908 if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) 2909 ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela); 2910 } 2911 2912 if (!resolved_zero && dyn_i->want_pltoff) 2913 { 2914 bfd_size_type t = 0; 2915 2916 /* Dynamic symbols get one IPLT relocation. Local symbols in 2917 shared libraries get two REL relocations. Local symbols in 2918 main applications get nothing. */ 2919 if (dynamic_symbol) 2920 t = sizeof (ElfNN_External_Rela); 2921 else if (shared) 2922 t = 2 * sizeof (ElfNN_External_Rela); 2923 2924 ia64_info->rel_pltoff_sec->size += t; 2925 } 2926 2927 /* Take care of the normal data relocations. */ 2928 2929 for (rent = dyn_i->reloc_entries; rent; rent = rent->next) 2930 { 2931 int count = rent->count; 2932 2933 switch (rent->type) 2934 { 2935 case R_IA64_FPTR32LSB: 2936 case R_IA64_FPTR64LSB: 2937 /* Allocate one iff !want_fptr and not PIE, which by this point 2938 will be true only if we're actually allocating one statically 2939 in the main executable. Position independent executables 2940 need a relative reloc. */ 2941 if (dyn_i->want_fptr && !bfd_link_pie (x->info)) 2942 continue; 2943 break; 2944 case R_IA64_PCREL32LSB: 2945 case R_IA64_PCREL64LSB: 2946 if (!dynamic_symbol) 2947 continue; 2948 break; 2949 case R_IA64_DIR32LSB: 2950 case R_IA64_DIR64LSB: 2951 if (!dynamic_symbol && !shared) 2952 continue; 2953 break; 2954 case R_IA64_IPLTLSB: 2955 if (!dynamic_symbol && !shared) 2956 continue; 2957 /* Use two REL relocations for IPLT relocations 2958 against local symbols. */ 2959 if (!dynamic_symbol) 2960 count *= 2; 2961 break; 2962 case R_IA64_DTPREL32LSB: 2963 case R_IA64_TPREL64LSB: 2964 case R_IA64_DTPREL64LSB: 2965 case R_IA64_DTPMOD64LSB: 2966 break; 2967 default: 2968 abort (); 2969 } 2970 if (rent->reltext) 2971 ia64_info->reltext = 1; 2972 rent->srel->size += sizeof (ElfNN_External_Rela) * count; 2973 } 2974 2975 return TRUE; 2976 } 2977 2978 static bfd_boolean 2979 elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, 2980 struct elf_link_hash_entry *h) 2981 { 2982 /* ??? Undefined symbols with PLT entries should be re-defined 2983 to be the PLT entry. */ 2984 2985 /* If this is a weak symbol, and there is a real definition, the 2986 processor independent code will have arranged for us to see the 2987 real definition first, and we can just use the same value. */ 2988 if (h->is_weakalias) 2989 { 2990 struct elf_link_hash_entry *def = weakdef (h); 2991 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 2992 h->root.u.def.section = def->root.u.def.section; 2993 h->root.u.def.value = def->root.u.def.value; 2994 return TRUE; 2995 } 2996 2997 /* If this is a reference to a symbol defined by a dynamic object which 2998 is not a function, we might allocate the symbol in our .dynbss section 2999 and allocate a COPY dynamic relocation. 3000 3001 But IA-64 code is canonically PIC, so as a rule we can avoid this sort 3002 of hackery. */ 3003 3004 return TRUE; 3005 } 3006 3007 static bfd_boolean 3008 elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 3009 struct bfd_link_info *info) 3010 { 3011 struct elfNN_ia64_allocate_data data; 3012 struct elfNN_ia64_link_hash_table *ia64_info; 3013 asection *sec; 3014 bfd *dynobj; 3015 bfd_boolean relplt = FALSE; 3016 3017 ia64_info = elfNN_ia64_hash_table (info); 3018 if (ia64_info == NULL) 3019 return FALSE; 3020 dynobj = ia64_info->root.dynobj; 3021 ia64_info->self_dtpmod_offset = (bfd_vma) -1; 3022 BFD_ASSERT(dynobj != NULL); 3023 data.info = info; 3024 3025 /* Set the contents of the .interp section to the interpreter. */ 3026 if (ia64_info->root.dynamic_sections_created 3027 && bfd_link_executable (info) && !info->nointerp) 3028 { 3029 sec = bfd_get_linker_section (dynobj, ".interp"); 3030 BFD_ASSERT (sec != NULL); 3031 sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; 3032 sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; 3033 } 3034 3035 /* Allocate the GOT entries. */ 3036 3037 if (ia64_info->root.sgot) 3038 { 3039 data.ofs = 0; 3040 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); 3041 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); 3042 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); 3043 ia64_info->root.sgot->size = data.ofs; 3044 } 3045 3046 /* Allocate the FPTR entries. */ 3047 3048 if (ia64_info->fptr_sec) 3049 { 3050 data.ofs = 0; 3051 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); 3052 ia64_info->fptr_sec->size = data.ofs; 3053 } 3054 3055 /* Now that we've seen all of the input files, we can decide which 3056 symbols need plt entries. Allocate the minimal PLT entries first. 3057 We do this even though dynamic_sections_created may be FALSE, because 3058 this has the side-effect of clearing want_plt and want_plt2. */ 3059 3060 data.ofs = 0; 3061 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); 3062 3063 ia64_info->minplt_entries = 0; 3064 if (data.ofs) 3065 { 3066 ia64_info->minplt_entries 3067 = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; 3068 } 3069 3070 /* Align the pointer for the plt2 entries. */ 3071 data.ofs = (data.ofs + 31) & (bfd_vma) -32; 3072 3073 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); 3074 if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) 3075 { 3076 /* FIXME: we always reserve the memory for dynamic linker even if 3077 there are no PLT entries since dynamic linker may assume the 3078 reserved memory always exists. */ 3079 3080 BFD_ASSERT (ia64_info->root.dynamic_sections_created); 3081 3082 ia64_info->root.splt->size = data.ofs; 3083 3084 /* If we've got a .plt, we need some extra memory for the dynamic 3085 linker. We stuff these in .got.plt. */ 3086 ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS; 3087 } 3088 3089 /* Allocate the PLTOFF entries. */ 3090 3091 if (ia64_info->pltoff_sec) 3092 { 3093 data.ofs = 0; 3094 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); 3095 ia64_info->pltoff_sec->size = data.ofs; 3096 } 3097 3098 if (ia64_info->root.dynamic_sections_created) 3099 { 3100 /* Allocate space for the dynamic relocations that turned out to be 3101 required. */ 3102 3103 if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1) 3104 ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela); 3105 data.only_got = FALSE; 3106 elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); 3107 } 3108 3109 /* We have now determined the sizes of the various dynamic sections. 3110 Allocate memory for them. */ 3111 for (sec = dynobj->sections; sec != NULL; sec = sec->next) 3112 { 3113 bfd_boolean strip; 3114 3115 if (!(sec->flags & SEC_LINKER_CREATED)) 3116 continue; 3117 3118 /* If we don't need this section, strip it from the output file. 3119 There were several sections primarily related to dynamic 3120 linking that must be create before the linker maps input 3121 sections to output sections. The linker does that before 3122 bfd_elf_size_dynamic_sections is called, and it is that 3123 function which decides whether anything needs to go into 3124 these sections. */ 3125 3126 strip = (sec->size == 0); 3127 3128 if (sec == ia64_info->root.sgot) 3129 strip = FALSE; 3130 else if (sec == ia64_info->root.srelgot) 3131 { 3132 if (strip) 3133 ia64_info->root.srelgot = NULL; 3134 else 3135 /* We use the reloc_count field as a counter if we need to 3136 copy relocs into the output file. */ 3137 sec->reloc_count = 0; 3138 } 3139 else if (sec == ia64_info->fptr_sec) 3140 { 3141 if (strip) 3142 ia64_info->fptr_sec = NULL; 3143 } 3144 else if (sec == ia64_info->rel_fptr_sec) 3145 { 3146 if (strip) 3147 ia64_info->rel_fptr_sec = NULL; 3148 else 3149 /* We use the reloc_count field as a counter if we need to 3150 copy relocs into the output file. */ 3151 sec->reloc_count = 0; 3152 } 3153 else if (sec == ia64_info->root.splt) 3154 { 3155 if (strip) 3156 ia64_info->root.splt = NULL; 3157 } 3158 else if (sec == ia64_info->pltoff_sec) 3159 { 3160 if (strip) 3161 ia64_info->pltoff_sec = NULL; 3162 } 3163 else if (sec == ia64_info->rel_pltoff_sec) 3164 { 3165 if (strip) 3166 ia64_info->rel_pltoff_sec = NULL; 3167 else 3168 { 3169 relplt = TRUE; 3170 /* We use the reloc_count field as a counter if we need to 3171 copy relocs into the output file. */ 3172 sec->reloc_count = 0; 3173 } 3174 } 3175 else 3176 { 3177 const char *name; 3178 3179 /* It's OK to base decisions on the section name, because none 3180 of the dynobj section names depend upon the input files. */ 3181 name = bfd_get_section_name (dynobj, sec); 3182 3183 if (strcmp (name, ".got.plt") == 0) 3184 strip = FALSE; 3185 else if (CONST_STRNEQ (name, ".rel")) 3186 { 3187 if (!strip) 3188 { 3189 /* We use the reloc_count field as a counter if we need to 3190 copy relocs into the output file. */ 3191 sec->reloc_count = 0; 3192 } 3193 } 3194 else 3195 continue; 3196 } 3197 3198 if (strip) 3199 sec->flags |= SEC_EXCLUDE; 3200 else 3201 { 3202 /* Allocate memory for the section contents. */ 3203 sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); 3204 if (sec->contents == NULL && sec->size != 0) 3205 return FALSE; 3206 } 3207 } 3208 3209 if (ia64_info->root.dynamic_sections_created) 3210 { 3211 /* Add some entries to the .dynamic section. We fill in the values 3212 later (in finish_dynamic_sections) but we must add the entries now 3213 so that we get the correct size for the .dynamic section. */ 3214 3215 if (bfd_link_executable (info)) 3216 { 3217 /* The DT_DEBUG entry is filled in by the dynamic linker and used 3218 by the debugger. */ 3219 #define add_dynamic_entry(TAG, VAL) \ 3220 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 3221 3222 if (!add_dynamic_entry (DT_DEBUG, 0)) 3223 return FALSE; 3224 } 3225 3226 if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0)) 3227 return FALSE; 3228 if (!add_dynamic_entry (DT_PLTGOT, 0)) 3229 return FALSE; 3230 3231 if (relplt) 3232 { 3233 if (!add_dynamic_entry (DT_PLTRELSZ, 0) 3234 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 3235 || !add_dynamic_entry (DT_JMPREL, 0)) 3236 return FALSE; 3237 } 3238 3239 if (!add_dynamic_entry (DT_RELA, 0) 3240 || !add_dynamic_entry (DT_RELASZ, 0) 3241 || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela))) 3242 return FALSE; 3243 3244 if (ia64_info->reltext) 3245 { 3246 if (!add_dynamic_entry (DT_TEXTREL, 0)) 3247 return FALSE; 3248 info->flags |= DF_TEXTREL; 3249 } 3250 } 3251 3252 /* ??? Perhaps force __gp local. */ 3253 3254 return TRUE; 3255 } 3256 3257 static void 3258 elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info, 3259 asection *sec, asection *srel, 3260 bfd_vma offset, unsigned int type, 3261 long dynindx, bfd_vma addend) 3262 { 3263 Elf_Internal_Rela outrel; 3264 bfd_byte *loc; 3265 3266 BFD_ASSERT (dynindx != -1); 3267 outrel.r_info = ELFNN_R_INFO (dynindx, type); 3268 outrel.r_addend = addend; 3269 outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset); 3270 if (outrel.r_offset >= (bfd_vma) -2) 3271 { 3272 /* Run for the hills. We shouldn't be outputting a relocation 3273 for this. So do what everyone else does and output a no-op. */ 3274 outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE); 3275 outrel.r_addend = 0; 3276 outrel.r_offset = 0; 3277 } 3278 else 3279 outrel.r_offset += sec->output_section->vma + sec->output_offset; 3280 3281 loc = srel->contents; 3282 loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela); 3283 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); 3284 BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size); 3285 } 3286 3287 /* Store an entry for target address TARGET_ADDR in the linkage table 3288 and return the gp-relative address of the linkage table entry. */ 3289 3290 static bfd_vma 3291 set_got_entry (bfd *abfd, struct bfd_link_info *info, 3292 struct elfNN_ia64_dyn_sym_info *dyn_i, 3293 long dynindx, bfd_vma addend, bfd_vma value, 3294 unsigned int dyn_r_type) 3295 { 3296 struct elfNN_ia64_link_hash_table *ia64_info; 3297 asection *got_sec; 3298 bfd_boolean done; 3299 bfd_vma got_offset; 3300 3301 ia64_info = elfNN_ia64_hash_table (info); 3302 if (ia64_info == NULL) 3303 return 0; 3304 3305 got_sec = ia64_info->root.sgot; 3306 3307 switch (dyn_r_type) 3308 { 3309 case R_IA64_TPREL64LSB: 3310 done = dyn_i->tprel_done; 3311 dyn_i->tprel_done = TRUE; 3312 got_offset = dyn_i->tprel_offset; 3313 break; 3314 case R_IA64_DTPMOD64LSB: 3315 if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset) 3316 { 3317 done = dyn_i->dtpmod_done; 3318 dyn_i->dtpmod_done = TRUE; 3319 } 3320 else 3321 { 3322 done = ia64_info->self_dtpmod_done; 3323 ia64_info->self_dtpmod_done = TRUE; 3324 dynindx = 0; 3325 } 3326 got_offset = dyn_i->dtpmod_offset; 3327 break; 3328 case R_IA64_DTPREL32LSB: 3329 case R_IA64_DTPREL64LSB: 3330 done = dyn_i->dtprel_done; 3331 dyn_i->dtprel_done = TRUE; 3332 got_offset = dyn_i->dtprel_offset; 3333 break; 3334 default: 3335 done = dyn_i->got_done; 3336 dyn_i->got_done = TRUE; 3337 got_offset = dyn_i->got_offset; 3338 break; 3339 } 3340 3341 BFD_ASSERT ((got_offset & 7) == 0); 3342 3343 if (! done) 3344 { 3345 /* Store the target address in the linkage table entry. */ 3346 bfd_put_64 (abfd, value, got_sec->contents + got_offset); 3347 3348 /* Install a dynamic relocation if needed. */ 3349 if (((bfd_link_pic (info) 3350 && (!dyn_i->h 3351 || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT 3352 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h)) 3353 || dyn_i->h->root.type != bfd_link_hash_undefweak) 3354 && dyn_r_type != R_IA64_DTPREL32LSB 3355 && dyn_r_type != R_IA64_DTPREL64LSB) 3356 || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type) 3357 || (dynindx != -1 3358 && (dyn_r_type == R_IA64_FPTR32LSB 3359 || dyn_r_type == R_IA64_FPTR64LSB))) 3360 && (!dyn_i->want_ltoff_fptr 3361 || !bfd_link_pie (info) 3362 || !dyn_i->h 3363 || dyn_i->h->root.type != bfd_link_hash_undefweak)) 3364 { 3365 if (dynindx == -1 3366 && dyn_r_type != R_IA64_TPREL64LSB 3367 && dyn_r_type != R_IA64_DTPMOD64LSB 3368 && dyn_r_type != R_IA64_DTPREL32LSB 3369 && dyn_r_type != R_IA64_DTPREL64LSB) 3370 { 3371 dyn_r_type = R_IA64_RELNNLSB; 3372 dynindx = 0; 3373 addend = value; 3374 } 3375 3376 if (bfd_big_endian (abfd)) 3377 { 3378 switch (dyn_r_type) 3379 { 3380 case R_IA64_REL32LSB: 3381 dyn_r_type = R_IA64_REL32MSB; 3382 break; 3383 case R_IA64_DIR32LSB: 3384 dyn_r_type = R_IA64_DIR32MSB; 3385 break; 3386 case R_IA64_FPTR32LSB: 3387 dyn_r_type = R_IA64_FPTR32MSB; 3388 break; 3389 case R_IA64_DTPREL32LSB: 3390 dyn_r_type = R_IA64_DTPREL32MSB; 3391 break; 3392 case R_IA64_REL64LSB: 3393 dyn_r_type = R_IA64_REL64MSB; 3394 break; 3395 case R_IA64_DIR64LSB: 3396 dyn_r_type = R_IA64_DIR64MSB; 3397 break; 3398 case R_IA64_FPTR64LSB: 3399 dyn_r_type = R_IA64_FPTR64MSB; 3400 break; 3401 case R_IA64_TPREL64LSB: 3402 dyn_r_type = R_IA64_TPREL64MSB; 3403 break; 3404 case R_IA64_DTPMOD64LSB: 3405 dyn_r_type = R_IA64_DTPMOD64MSB; 3406 break; 3407 case R_IA64_DTPREL64LSB: 3408 dyn_r_type = R_IA64_DTPREL64MSB; 3409 break; 3410 default: 3411 BFD_ASSERT (FALSE); 3412 break; 3413 } 3414 } 3415 3416 elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec, 3417 ia64_info->root.srelgot, 3418 got_offset, dyn_r_type, 3419 dynindx, addend); 3420 } 3421 } 3422 3423 /* Return the address of the linkage table entry. */ 3424 value = (got_sec->output_section->vma 3425 + got_sec->output_offset 3426 + got_offset); 3427 3428 return value; 3429 } 3430 3431 /* Fill in a function descriptor consisting of the function's code 3432 address and its global pointer. Return the descriptor's address. */ 3433 3434 static bfd_vma 3435 set_fptr_entry (bfd *abfd, struct bfd_link_info *info, 3436 struct elfNN_ia64_dyn_sym_info *dyn_i, 3437 bfd_vma value) 3438 { 3439 struct elfNN_ia64_link_hash_table *ia64_info; 3440 asection *fptr_sec; 3441 3442 ia64_info = elfNN_ia64_hash_table (info); 3443 if (ia64_info == NULL) 3444 return 0; 3445 3446 fptr_sec = ia64_info->fptr_sec; 3447 3448 if (!dyn_i->fptr_done) 3449 { 3450 dyn_i->fptr_done = 1; 3451 3452 /* Fill in the function descriptor. */ 3453 bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); 3454 bfd_put_64 (abfd, _bfd_get_gp_value (abfd), 3455 fptr_sec->contents + dyn_i->fptr_offset + 8); 3456 if (ia64_info->rel_fptr_sec) 3457 { 3458 Elf_Internal_Rela outrel; 3459 bfd_byte *loc; 3460 3461 if (bfd_little_endian (abfd)) 3462 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB); 3463 else 3464 outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB); 3465 outrel.r_addend = value; 3466 outrel.r_offset = (fptr_sec->output_section->vma 3467 + fptr_sec->output_offset 3468 + dyn_i->fptr_offset); 3469 loc = ia64_info->rel_fptr_sec->contents; 3470 loc += ia64_info->rel_fptr_sec->reloc_count++ 3471 * sizeof (ElfNN_External_Rela); 3472 bfd_elfNN_swap_reloca_out (abfd, &outrel, loc); 3473 } 3474 } 3475 3476 /* Return the descriptor's address. */ 3477 value = (fptr_sec->output_section->vma 3478 + fptr_sec->output_offset 3479 + dyn_i->fptr_offset); 3480 3481 return value; 3482 } 3483 3484 /* Fill in a PLTOFF entry consisting of the function's code address 3485 and its global pointer. Return the descriptor's address. */ 3486 3487 static bfd_vma 3488 set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, 3489 struct elfNN_ia64_dyn_sym_info *dyn_i, 3490 bfd_vma value, bfd_boolean is_plt) 3491 { 3492 struct elfNN_ia64_link_hash_table *ia64_info; 3493 asection *pltoff_sec; 3494 3495 ia64_info = elfNN_ia64_hash_table (info); 3496 if (ia64_info == NULL) 3497 return 0; 3498 3499 pltoff_sec = ia64_info->pltoff_sec; 3500 3501 /* Don't do anything if this symbol uses a real PLT entry. In 3502 that case, we'll fill this in during finish_dynamic_symbol. */ 3503 if ((! dyn_i->want_plt || is_plt) 3504 && !dyn_i->pltoff_done) 3505 { 3506 bfd_vma gp = _bfd_get_gp_value (abfd); 3507 3508 /* Fill in the function descriptor. */ 3509 bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); 3510 bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); 3511 3512 /* Install dynamic relocations if needed. */ 3513 if (!is_plt 3514 && bfd_link_pic (info) 3515 && (!dyn_i->h 3516 || (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT 3517 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h)) 3518 || dyn_i->h->root.type != bfd_link_hash_undefweak)) 3519 { 3520 unsigned int dyn_r_type; 3521 3522 if (bfd_big_endian (abfd)) 3523 dyn_r_type = R_IA64_RELNNMSB; 3524 else 3525 dyn_r_type = R_IA64_RELNNLSB; 3526 3527 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, 3528 ia64_info->rel_pltoff_sec, 3529 dyn_i->pltoff_offset, 3530 dyn_r_type, 0, value); 3531 elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, 3532 ia64_info->rel_pltoff_sec, 3533 dyn_i->pltoff_offset + ARCH_SIZE / 8, 3534 dyn_r_type, 0, gp); 3535 } 3536 3537 dyn_i->pltoff_done = 1; 3538 } 3539 3540 /* Return the descriptor's address. */ 3541 value = (pltoff_sec->output_section->vma 3542 + pltoff_sec->output_offset 3543 + dyn_i->pltoff_offset); 3544 3545 return value; 3546 } 3547 3548 /* Return the base VMA address which should be subtracted from real addresses 3549 when resolving @tprel() relocation. 3550 Main program TLS (whose template starts at PT_TLS p_vaddr) 3551 is assigned offset round(2 * size of pointer, PT_TLS p_align). */ 3552 3553 static bfd_vma 3554 elfNN_ia64_tprel_base (struct bfd_link_info *info) 3555 { 3556 asection *tls_sec = elf_hash_table (info)->tls_sec; 3557 return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4, 3558 tls_sec->alignment_power); 3559 } 3560 3561 /* Return the base VMA address which should be subtracted from real addresses 3562 when resolving @dtprel() relocation. 3563 This is PT_TLS segment p_vaddr. */ 3564 3565 static bfd_vma 3566 elfNN_ia64_dtprel_base (struct bfd_link_info *info) 3567 { 3568 return elf_hash_table (info)->tls_sec->vma; 3569 } 3570 3571 /* Called through qsort to sort the .IA_64.unwind section during a 3572 non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd 3573 to the output bfd so we can do proper endianness frobbing. */ 3574 3575 static bfd *elfNN_ia64_unwind_entry_compare_bfd; 3576 3577 static int 3578 elfNN_ia64_unwind_entry_compare (const void * a, const void * b) 3579 { 3580 bfd_vma av, bv; 3581 3582 av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a); 3583 bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b); 3584 3585 return (av < bv ? -1 : av > bv ? 1 : 0); 3586 } 3587 3588 /* Make sure we've got ourselves a nice fat __gp value. */ 3589 static bfd_boolean 3590 elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) 3591 { 3592 bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; 3593 bfd_vma min_short_vma = min_vma, max_short_vma = 0; 3594 struct elf_link_hash_entry *gp; 3595 bfd_vma gp_val; 3596 asection *os; 3597 struct elfNN_ia64_link_hash_table *ia64_info; 3598 3599 ia64_info = elfNN_ia64_hash_table (info); 3600 if (ia64_info == NULL) 3601 return FALSE; 3602 3603 /* Find the min and max vma of all sections marked short. Also collect 3604 min and max vma of any type, for use in selecting a nice gp. */ 3605 for (os = abfd->sections; os ; os = os->next) 3606 { 3607 bfd_vma lo, hi; 3608 3609 if ((os->flags & SEC_ALLOC) == 0) 3610 continue; 3611 3612 lo = os->vma; 3613 /* When this function is called from elfNN_ia64_final_link 3614 the correct value to use is os->size. When called from 3615 elfNN_ia64_relax_section we are in the middle of section 3616 sizing; some sections will already have os->size set, others 3617 will have os->size zero and os->rawsize the previous size. */ 3618 hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); 3619 if (hi < lo) 3620 hi = (bfd_vma) -1; 3621 3622 if (min_vma > lo) 3623 min_vma = lo; 3624 if (max_vma < hi) 3625 max_vma = hi; 3626 if (os->flags & SEC_SMALL_DATA) 3627 { 3628 if (min_short_vma > lo) 3629 min_short_vma = lo; 3630 if (max_short_vma < hi) 3631 max_short_vma = hi; 3632 } 3633 } 3634 3635 if (ia64_info->min_short_sec) 3636 { 3637 if (min_short_vma 3638 > (ia64_info->min_short_sec->vma 3639 + ia64_info->min_short_offset)) 3640 min_short_vma = (ia64_info->min_short_sec->vma 3641 + ia64_info->min_short_offset); 3642 if (max_short_vma 3643 < (ia64_info->max_short_sec->vma 3644 + ia64_info->max_short_offset)) 3645 max_short_vma = (ia64_info->max_short_sec->vma 3646 + ia64_info->max_short_offset); 3647 } 3648 3649 /* See if the user wants to force a value. */ 3650 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, 3651 FALSE, FALSE); 3652 3653 if (gp 3654 && (gp->root.type == bfd_link_hash_defined 3655 || gp->root.type == bfd_link_hash_defweak)) 3656 { 3657 asection *gp_sec = gp->root.u.def.section; 3658 gp_val = (gp->root.u.def.value 3659 + gp_sec->output_section->vma 3660 + gp_sec->output_offset); 3661 } 3662 else 3663 { 3664 /* Pick a sensible value. */ 3665 3666 if (ia64_info->min_short_sec) 3667 { 3668 bfd_vma short_range = max_short_vma - min_short_vma; 3669 3670 /* If min_short_sec is set, pick one in the middle bewteen 3671 min_short_vma and max_short_vma. */ 3672 if (short_range >= 0x400000) 3673 goto overflow; 3674 gp_val = min_short_vma + short_range / 2; 3675 } 3676 else 3677 { 3678 asection *got_sec = ia64_info->root.sgot; 3679 3680 /* Start with just the address of the .got. */ 3681 if (got_sec) 3682 gp_val = got_sec->output_section->vma; 3683 else if (max_short_vma != 0) 3684 gp_val = min_short_vma; 3685 else if (max_vma - min_vma < 0x200000) 3686 gp_val = min_vma; 3687 else 3688 gp_val = max_vma - 0x200000 + 8; 3689 } 3690 3691 /* If it is possible to address the entire image, but we 3692 don't with the choice above, adjust. */ 3693 if (max_vma - min_vma < 0x400000 3694 && (max_vma - gp_val >= 0x200000 3695 || gp_val - min_vma > 0x200000)) 3696 gp_val = min_vma + 0x200000; 3697 else if (max_short_vma != 0) 3698 { 3699 /* If we don't cover all the short data, adjust. */ 3700 if (max_short_vma - gp_val >= 0x200000) 3701 gp_val = min_short_vma + 0x200000; 3702 3703 /* If we're addressing stuff past the end, adjust back. */ 3704 if (gp_val > max_vma) 3705 gp_val = max_vma - 0x200000 + 8; 3706 } 3707 } 3708 3709 /* Validate whether all SHF_IA_64_SHORT sections are within 3710 range of the chosen GP. */ 3711 3712 if (max_short_vma != 0) 3713 { 3714 if (max_short_vma - min_short_vma >= 0x400000) 3715 { 3716 overflow: 3717 _bfd_error_handler 3718 /* xgettext:c-format */ 3719 (_("%pB: short data segment overflowed (%#" PRIx64 " >= 0x400000)"), 3720 abfd, (uint64_t) (max_short_vma - min_short_vma)); 3721 return FALSE; 3722 } 3723 else if ((gp_val > min_short_vma 3724 && gp_val - min_short_vma > 0x200000) 3725 || (gp_val < max_short_vma 3726 && max_short_vma - gp_val >= 0x200000)) 3727 { 3728 _bfd_error_handler 3729 (_("%pB: __gp does not cover short data segment"), abfd); 3730 return FALSE; 3731 } 3732 } 3733 3734 _bfd_set_gp_value (abfd, gp_val); 3735 3736 return TRUE; 3737 } 3738 3739 static bfd_boolean 3740 elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info) 3741 { 3742 struct elfNN_ia64_link_hash_table *ia64_info; 3743 asection *unwind_output_sec; 3744 3745 ia64_info = elfNN_ia64_hash_table (info); 3746 if (ia64_info == NULL) 3747 return FALSE; 3748 3749 /* Make sure we've got ourselves a nice fat __gp value. */ 3750 if (!bfd_link_relocatable (info)) 3751 { 3752 bfd_vma gp_val; 3753 struct elf_link_hash_entry *gp; 3754 3755 /* We assume after gp is set, section size will only decrease. We 3756 need to adjust gp for it. */ 3757 _bfd_set_gp_value (abfd, 0); 3758 if (! elfNN_ia64_choose_gp (abfd, info, TRUE)) 3759 return FALSE; 3760 gp_val = _bfd_get_gp_value (abfd); 3761 3762 gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, 3763 FALSE, FALSE); 3764 if (gp) 3765 { 3766 gp->root.type = bfd_link_hash_defined; 3767 gp->root.u.def.value = gp_val; 3768 gp->root.u.def.section = bfd_abs_section_ptr; 3769 } 3770 } 3771 3772 /* If we're producing a final executable, we need to sort the contents 3773 of the .IA_64.unwind section. Force this section to be relocated 3774 into memory rather than written immediately to the output file. */ 3775 unwind_output_sec = NULL; 3776 if (!bfd_link_relocatable (info)) 3777 { 3778 asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); 3779 if (s) 3780 { 3781 unwind_output_sec = s->output_section; 3782 unwind_output_sec->contents 3783 = bfd_malloc (unwind_output_sec->size); 3784 if (unwind_output_sec->contents == NULL) 3785 return FALSE; 3786 } 3787 } 3788 3789 /* Invoke the regular ELF backend linker to do all the work. */ 3790 if (!bfd_elf_final_link (abfd, info)) 3791 return FALSE; 3792 3793 if (unwind_output_sec) 3794 { 3795 elfNN_ia64_unwind_entry_compare_bfd = abfd; 3796 qsort (unwind_output_sec->contents, 3797 (size_t) (unwind_output_sec->size / 24), 3798 24, 3799 elfNN_ia64_unwind_entry_compare); 3800 3801 if (! bfd_set_section_contents (abfd, unwind_output_sec, 3802 unwind_output_sec->contents, (bfd_vma) 0, 3803 unwind_output_sec->size)) 3804 return FALSE; 3805 } 3806 3807 return TRUE; 3808 } 3809 3810 static bfd_boolean 3811 elfNN_ia64_relocate_section (bfd *output_bfd, 3812 struct bfd_link_info *info, 3813 bfd *input_bfd, 3814 asection *input_section, 3815 bfd_byte *contents, 3816 Elf_Internal_Rela *relocs, 3817 Elf_Internal_Sym *local_syms, 3818 asection **local_sections) 3819 { 3820 struct elfNN_ia64_link_hash_table *ia64_info; 3821 Elf_Internal_Shdr *symtab_hdr; 3822 Elf_Internal_Rela *rel; 3823 Elf_Internal_Rela *relend; 3824 asection *srel; 3825 bfd_boolean ret_val = TRUE; /* for non-fatal errors */ 3826 bfd_vma gp_val; 3827 3828 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 3829 ia64_info = elfNN_ia64_hash_table (info); 3830 if (ia64_info == NULL) 3831 return FALSE; 3832 3833 /* Infect various flags from the input section to the output section. */ 3834 if (bfd_link_relocatable (info)) 3835 { 3836 bfd_vma flags; 3837 3838 flags = elf_section_data(input_section)->this_hdr.sh_flags; 3839 flags &= SHF_IA_64_NORECOV; 3840 3841 elf_section_data(input_section->output_section) 3842 ->this_hdr.sh_flags |= flags; 3843 } 3844 3845 gp_val = _bfd_get_gp_value (output_bfd); 3846 srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE); 3847 3848 rel = relocs; 3849 relend = relocs + input_section->reloc_count; 3850 for (; rel < relend; ++rel) 3851 { 3852 struct elf_link_hash_entry *h; 3853 struct elfNN_ia64_dyn_sym_info *dyn_i; 3854 bfd_reloc_status_type r; 3855 reloc_howto_type *howto; 3856 unsigned long r_symndx; 3857 Elf_Internal_Sym *sym; 3858 unsigned int r_type; 3859 bfd_vma value; 3860 asection *sym_sec; 3861 bfd_byte *hit_addr; 3862 bfd_boolean dynamic_symbol_p; 3863 bfd_boolean undef_weak_ref; 3864 3865 r_type = ELFNN_R_TYPE (rel->r_info); 3866 if (r_type > R_IA64_MAX_RELOC_CODE) 3867 { 3868 /* xgettext:c-format */ 3869 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 3870 input_bfd, (int) r_type); 3871 bfd_set_error (bfd_error_bad_value); 3872 ret_val = FALSE; 3873 continue; 3874 } 3875 3876 howto = ia64_elf_lookup_howto (r_type); 3877 if (howto == NULL) 3878 { 3879 ret_val = FALSE; 3880 continue; 3881 } 3882 3883 r_symndx = ELFNN_R_SYM (rel->r_info); 3884 h = NULL; 3885 sym = NULL; 3886 sym_sec = NULL; 3887 undef_weak_ref = FALSE; 3888 3889 if (r_symndx < symtab_hdr->sh_info) 3890 { 3891 /* Reloc against local symbol. */ 3892 asection *msec; 3893 sym = local_syms + r_symndx; 3894 sym_sec = local_sections[r_symndx]; 3895 msec = sym_sec; 3896 value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); 3897 if (!bfd_link_relocatable (info) 3898 && (sym_sec->flags & SEC_MERGE) != 0 3899 && ELF_ST_TYPE (sym->st_info) == STT_SECTION 3900 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) 3901 { 3902 struct elfNN_ia64_local_hash_entry *loc_h; 3903 3904 loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); 3905 if (loc_h && ! loc_h->sec_merge_done) 3906 { 3907 struct elfNN_ia64_dyn_sym_info *dynent; 3908 unsigned int count; 3909 3910 for (count = loc_h->count, dynent = loc_h->info; 3911 count != 0; 3912 count--, dynent++) 3913 { 3914 msec = sym_sec; 3915 dynent->addend = 3916 _bfd_merged_section_offset (output_bfd, &msec, 3917 elf_section_data (msec)-> 3918 sec_info, 3919 sym->st_value 3920 + dynent->addend); 3921 dynent->addend -= sym->st_value; 3922 dynent->addend += msec->output_section->vma 3923 + msec->output_offset 3924 - sym_sec->output_section->vma 3925 - sym_sec->output_offset; 3926 } 3927 3928 /* We may have introduced duplicated entries. We need 3929 to remove them properly. */ 3930 count = sort_dyn_sym_info (loc_h->info, loc_h->count); 3931 if (count != loc_h->count) 3932 { 3933 loc_h->count = count; 3934 loc_h->sorted_count = count; 3935 } 3936 3937 loc_h->sec_merge_done = 1; 3938 } 3939 } 3940 } 3941 else 3942 { 3943 bfd_boolean unresolved_reloc; 3944 bfd_boolean warned, ignored; 3945 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 3946 3947 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 3948 r_symndx, symtab_hdr, sym_hashes, 3949 h, sym_sec, value, 3950 unresolved_reloc, warned, ignored); 3951 3952 if (h->root.type == bfd_link_hash_undefweak) 3953 undef_weak_ref = TRUE; 3954 else if (warned || (ignored && bfd_link_executable (info))) 3955 continue; 3956 } 3957 3958 if (sym_sec != NULL && discarded_section (sym_sec)) 3959 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3960 rel, 1, relend, howto, 0, contents); 3961 3962 if (bfd_link_relocatable (info)) 3963 continue; 3964 3965 hit_addr = contents + rel->r_offset; 3966 value += rel->r_addend; 3967 dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type); 3968 3969 switch (r_type) 3970 { 3971 case R_IA64_NONE: 3972 case R_IA64_LDXMOV: 3973 continue; 3974 3975 case R_IA64_IMM14: 3976 case R_IA64_IMM22: 3977 case R_IA64_IMM64: 3978 case R_IA64_DIR32MSB: 3979 case R_IA64_DIR32LSB: 3980 case R_IA64_DIR64MSB: 3981 case R_IA64_DIR64LSB: 3982 /* Install a dynamic relocation for this reloc. */ 3983 if ((dynamic_symbol_p || bfd_link_pic (info)) 3984 && !(h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) 3985 && r_symndx != STN_UNDEF 3986 && (input_section->flags & SEC_ALLOC) != 0) 3987 { 3988 unsigned int dyn_r_type; 3989 long dynindx; 3990 bfd_vma addend; 3991 3992 BFD_ASSERT (srel != NULL); 3993 3994 switch (r_type) 3995 { 3996 case R_IA64_IMM14: 3997 case R_IA64_IMM22: 3998 case R_IA64_IMM64: 3999 /* ??? People shouldn't be doing non-pic code in 4000 shared libraries nor dynamic executables. */ 4001 _bfd_error_handler 4002 /* xgettext:c-format */ 4003 (_("%pB: non-pic code with imm relocation against dynamic symbol `%s'"), 4004 input_bfd, 4005 h ? h->root.root.string 4006 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 4007 sym_sec)); 4008 ret_val = FALSE; 4009 continue; 4010 4011 default: 4012 break; 4013 } 4014 4015 /* If we don't need dynamic symbol lookup, find a 4016 matching RELATIVE relocation. */ 4017 dyn_r_type = r_type; 4018 if (dynamic_symbol_p) 4019 { 4020 dynindx = h->dynindx; 4021 addend = rel->r_addend; 4022 value = 0; 4023 } 4024 else 4025 { 4026 switch (r_type) 4027 { 4028 case R_IA64_DIR32MSB: 4029 dyn_r_type = R_IA64_REL32MSB; 4030 break; 4031 case R_IA64_DIR32LSB: 4032 dyn_r_type = R_IA64_REL32LSB; 4033 break; 4034 case R_IA64_DIR64MSB: 4035 dyn_r_type = R_IA64_REL64MSB; 4036 break; 4037 case R_IA64_DIR64LSB: 4038 dyn_r_type = R_IA64_REL64LSB; 4039 break; 4040 4041 default: 4042 break; 4043 } 4044 dynindx = 0; 4045 addend = value; 4046 } 4047 4048 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, 4049 srel, rel->r_offset, dyn_r_type, 4050 dynindx, addend); 4051 } 4052 /* Fall through. */ 4053 4054 case R_IA64_LTV32MSB: 4055 case R_IA64_LTV32LSB: 4056 case R_IA64_LTV64MSB: 4057 case R_IA64_LTV64LSB: 4058 r = ia64_elf_install_value (hit_addr, value, r_type); 4059 break; 4060 4061 case R_IA64_GPREL22: 4062 case R_IA64_GPREL64I: 4063 case R_IA64_GPREL32MSB: 4064 case R_IA64_GPREL32LSB: 4065 case R_IA64_GPREL64MSB: 4066 case R_IA64_GPREL64LSB: 4067 if (dynamic_symbol_p) 4068 { 4069 _bfd_error_handler 4070 /* xgettext:c-format */ 4071 (_("%pB: @gprel relocation against dynamic symbol %s"), 4072 input_bfd, 4073 h ? h->root.root.string 4074 : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 4075 sym_sec)); 4076 ret_val = FALSE; 4077 continue; 4078 } 4079 value -= gp_val; 4080 r = ia64_elf_install_value (hit_addr, value, r_type); 4081 break; 4082 4083 case R_IA64_LTOFF22: 4084 case R_IA64_LTOFF22X: 4085 case R_IA64_LTOFF64I: 4086 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 4087 value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1), 4088 rel->r_addend, value, R_IA64_DIRNNLSB); 4089 value -= gp_val; 4090 r = ia64_elf_install_value (hit_addr, value, r_type); 4091 break; 4092 4093 case R_IA64_PLTOFF22: 4094 case R_IA64_PLTOFF64I: 4095 case R_IA64_PLTOFF64MSB: 4096 case R_IA64_PLTOFF64LSB: 4097 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 4098 value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); 4099 value -= gp_val; 4100 r = ia64_elf_install_value (hit_addr, value, r_type); 4101 break; 4102 4103 case R_IA64_FPTR64I: 4104 case R_IA64_FPTR32MSB: 4105 case R_IA64_FPTR32LSB: 4106 case R_IA64_FPTR64MSB: 4107 case R_IA64_FPTR64LSB: 4108 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 4109 if (dyn_i->want_fptr) 4110 { 4111 if (!undef_weak_ref) 4112 value = set_fptr_entry (output_bfd, info, dyn_i, value); 4113 } 4114 if (!dyn_i->want_fptr || bfd_link_pie (info)) 4115 { 4116 long dynindx; 4117 unsigned int dyn_r_type = r_type; 4118 bfd_vma addend = rel->r_addend; 4119 4120 /* Otherwise, we expect the dynamic linker to create 4121 the entry. */ 4122 4123 if (dyn_i->want_fptr) 4124 { 4125 if (r_type == R_IA64_FPTR64I) 4126 { 4127 /* We can't represent this without a dynamic symbol. 4128 Adjust the relocation to be against an output 4129 section symbol, which are always present in the 4130 dynamic symbol table. */ 4131 /* ??? People shouldn't be doing non-pic code in 4132 shared libraries. Hork. */ 4133 _bfd_error_handler 4134 (_("%pB: linking non-pic code in a position independent executable"), 4135 input_bfd); 4136 ret_val = FALSE; 4137 continue; 4138 } 4139 dynindx = 0; 4140 addend = value; 4141 dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB; 4142 } 4143 else if (h) 4144 { 4145 if (h->dynindx != -1) 4146 dynindx = h->dynindx; 4147 else 4148 dynindx = (_bfd_elf_link_lookup_local_dynindx 4149 (info, h->root.u.def.section->owner, 4150 global_sym_index (h))); 4151 value = 0; 4152 } 4153 else 4154 { 4155 dynindx = (_bfd_elf_link_lookup_local_dynindx 4156 (info, input_bfd, (long) r_symndx)); 4157 value = 0; 4158 } 4159 4160 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, 4161 srel, rel->r_offset, dyn_r_type, 4162 dynindx, addend); 4163 } 4164 4165 r = ia64_elf_install_value (hit_addr, value, r_type); 4166 break; 4167 4168 case R_IA64_LTOFF_FPTR22: 4169 case R_IA64_LTOFF_FPTR64I: 4170 case R_IA64_LTOFF_FPTR32MSB: 4171 case R_IA64_LTOFF_FPTR32LSB: 4172 case R_IA64_LTOFF_FPTR64MSB: 4173 case R_IA64_LTOFF_FPTR64LSB: 4174 { 4175 long dynindx; 4176 4177 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 4178 if (dyn_i->want_fptr) 4179 { 4180 BFD_ASSERT (h == NULL || h->dynindx == -1); 4181 if (!undef_weak_ref) 4182 value = set_fptr_entry (output_bfd, info, dyn_i, value); 4183 dynindx = -1; 4184 } 4185 else 4186 { 4187 /* Otherwise, we expect the dynamic linker to create 4188 the entry. */ 4189 if (h) 4190 { 4191 if (h->dynindx != -1) 4192 dynindx = h->dynindx; 4193 else 4194 dynindx = (_bfd_elf_link_lookup_local_dynindx 4195 (info, h->root.u.def.section->owner, 4196 global_sym_index (h))); 4197 } 4198 else 4199 dynindx = (_bfd_elf_link_lookup_local_dynindx 4200 (info, input_bfd, (long) r_symndx)); 4201 value = 0; 4202 } 4203 4204 value = set_got_entry (output_bfd, info, dyn_i, dynindx, 4205 rel->r_addend, value, R_IA64_FPTRNNLSB); 4206 value -= gp_val; 4207 r = ia64_elf_install_value (hit_addr, value, r_type); 4208 } 4209 break; 4210 4211 case R_IA64_PCREL32MSB: 4212 case R_IA64_PCREL32LSB: 4213 case R_IA64_PCREL64MSB: 4214 case R_IA64_PCREL64LSB: 4215 /* Install a dynamic relocation for this reloc. */ 4216 if (dynamic_symbol_p && r_symndx != STN_UNDEF) 4217 { 4218 BFD_ASSERT (srel != NULL); 4219 4220 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, 4221 srel, rel->r_offset, r_type, 4222 h->dynindx, rel->r_addend); 4223 } 4224 goto finish_pcrel; 4225 4226 case R_IA64_PCREL21B: 4227 case R_IA64_PCREL60B: 4228 /* We should have created a PLT entry for any dynamic symbol. */ 4229 dyn_i = NULL; 4230 if (h) 4231 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); 4232 4233 if (dyn_i && dyn_i->want_plt2) 4234 { 4235 /* Should have caught this earlier. */ 4236 BFD_ASSERT (rel->r_addend == 0); 4237 4238 value = (ia64_info->root.splt->output_section->vma 4239 + ia64_info->root.splt->output_offset 4240 + dyn_i->plt2_offset); 4241 } 4242 else 4243 { 4244 /* Since there's no PLT entry, Validate that this is 4245 locally defined. */ 4246 BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); 4247 4248 /* If the symbol is undef_weak, we shouldn't be trying 4249 to call it. There's every chance that we'd wind up 4250 with an out-of-range fixup here. Don't bother setting 4251 any value at all. */ 4252 if (undef_weak_ref) 4253 continue; 4254 } 4255 goto finish_pcrel; 4256 4257 case R_IA64_PCREL21BI: 4258 case R_IA64_PCREL21F: 4259 case R_IA64_PCREL21M: 4260 case R_IA64_PCREL22: 4261 case R_IA64_PCREL64I: 4262 /* The PCREL21BI reloc is specifically not intended for use with 4263 dynamic relocs. PCREL21F and PCREL21M are used for speculation 4264 fixup code, and thus probably ought not be dynamic. The 4265 PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ 4266 if (dynamic_symbol_p) 4267 { 4268 const char *msg; 4269 4270 if (r_type == R_IA64_PCREL21BI) 4271 /* xgettext:c-format */ 4272 msg = _("%pB: @internal branch to dynamic symbol %s"); 4273 else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) 4274 /* xgettext:c-format */ 4275 msg = _("%pB: speculation fixup to dynamic symbol %s"); 4276 else 4277 /* xgettext:c-format */ 4278 msg = _("%pB: @pcrel relocation against dynamic symbol %s"); 4279 _bfd_error_handler (msg, input_bfd, 4280 h ? h->root.root.string 4281 : bfd_elf_sym_name (input_bfd, 4282 symtab_hdr, 4283 sym, 4284 sym_sec)); 4285 ret_val = FALSE; 4286 continue; 4287 } 4288 goto finish_pcrel; 4289 4290 finish_pcrel: 4291 /* Make pc-relative. */ 4292 value -= (input_section->output_section->vma 4293 + input_section->output_offset 4294 + rel->r_offset) & ~ (bfd_vma) 0x3; 4295 r = ia64_elf_install_value (hit_addr, value, r_type); 4296 break; 4297 4298 case R_IA64_SEGREL32MSB: 4299 case R_IA64_SEGREL32LSB: 4300 case R_IA64_SEGREL64MSB: 4301 case R_IA64_SEGREL64LSB: 4302 { 4303 /* Find the segment that contains the output_section. */ 4304 Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section 4305 (output_bfd, input_section->output_section); 4306 4307 if (p == NULL) 4308 { 4309 r = bfd_reloc_notsupported; 4310 } 4311 else 4312 { 4313 /* The VMA of the segment is the vaddr of the associated 4314 program header. */ 4315 if (value > p->p_vaddr) 4316 value -= p->p_vaddr; 4317 else 4318 value = 0; 4319 r = ia64_elf_install_value (hit_addr, value, r_type); 4320 } 4321 break; 4322 } 4323 4324 case R_IA64_SECREL32MSB: 4325 case R_IA64_SECREL32LSB: 4326 case R_IA64_SECREL64MSB: 4327 case R_IA64_SECREL64LSB: 4328 /* Make output-section relative to section where the symbol 4329 is defined. PR 475 */ 4330 if (sym_sec) 4331 value -= sym_sec->output_section->vma; 4332 r = ia64_elf_install_value (hit_addr, value, r_type); 4333 break; 4334 4335 case R_IA64_IPLTMSB: 4336 case R_IA64_IPLTLSB: 4337 /* Install a dynamic relocation for this reloc. */ 4338 if ((dynamic_symbol_p || bfd_link_pic (info)) 4339 && (input_section->flags & SEC_ALLOC) != 0) 4340 { 4341 BFD_ASSERT (srel != NULL); 4342 4343 /* If we don't need dynamic symbol lookup, install two 4344 RELATIVE relocations. */ 4345 if (!dynamic_symbol_p) 4346 { 4347 unsigned int dyn_r_type; 4348 4349 if (r_type == R_IA64_IPLTMSB) 4350 dyn_r_type = R_IA64_REL64MSB; 4351 else 4352 dyn_r_type = R_IA64_REL64LSB; 4353 4354 elfNN_ia64_install_dyn_reloc (output_bfd, info, 4355 input_section, 4356 srel, rel->r_offset, 4357 dyn_r_type, 0, value); 4358 elfNN_ia64_install_dyn_reloc (output_bfd, info, 4359 input_section, 4360 srel, rel->r_offset + 8, 4361 dyn_r_type, 0, gp_val); 4362 } 4363 else 4364 elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, 4365 srel, rel->r_offset, r_type, 4366 h->dynindx, rel->r_addend); 4367 } 4368 4369 if (r_type == R_IA64_IPLTMSB) 4370 r_type = R_IA64_DIR64MSB; 4371 else 4372 r_type = R_IA64_DIR64LSB; 4373 ia64_elf_install_value (hit_addr, value, r_type); 4374 r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); 4375 break; 4376 4377 case R_IA64_TPREL14: 4378 case R_IA64_TPREL22: 4379 case R_IA64_TPREL64I: 4380 if (elf_hash_table (info)->tls_sec == NULL) 4381 goto missing_tls_sec; 4382 value -= elfNN_ia64_tprel_base (info); 4383 r = ia64_elf_install_value (hit_addr, value, r_type); 4384 break; 4385 4386 case R_IA64_DTPREL14: 4387 case R_IA64_DTPREL22: 4388 case R_IA64_DTPREL64I: 4389 case R_IA64_DTPREL32LSB: 4390 case R_IA64_DTPREL32MSB: 4391 case R_IA64_DTPREL64LSB: 4392 case R_IA64_DTPREL64MSB: 4393 if (elf_hash_table (info)->tls_sec == NULL) 4394 goto missing_tls_sec; 4395 value -= elfNN_ia64_dtprel_base (info); 4396 r = ia64_elf_install_value (hit_addr, value, r_type); 4397 break; 4398 4399 case R_IA64_LTOFF_TPREL22: 4400 case R_IA64_LTOFF_DTPMOD22: 4401 case R_IA64_LTOFF_DTPREL22: 4402 { 4403 int got_r_type; 4404 long dynindx = h ? h->dynindx : -1; 4405 bfd_vma r_addend = rel->r_addend; 4406 4407 switch (r_type) 4408 { 4409 default: 4410 case R_IA64_LTOFF_TPREL22: 4411 if (!dynamic_symbol_p) 4412 { 4413 if (elf_hash_table (info)->tls_sec == NULL) 4414 goto missing_tls_sec; 4415 if (!bfd_link_pic (info)) 4416 value -= elfNN_ia64_tprel_base (info); 4417 else 4418 { 4419 r_addend += value - elfNN_ia64_dtprel_base (info); 4420 dynindx = 0; 4421 } 4422 } 4423 got_r_type = R_IA64_TPREL64LSB; 4424 break; 4425 case R_IA64_LTOFF_DTPMOD22: 4426 if (!dynamic_symbol_p && !bfd_link_pic (info)) 4427 value = 1; 4428 got_r_type = R_IA64_DTPMOD64LSB; 4429 break; 4430 case R_IA64_LTOFF_DTPREL22: 4431 if (!dynamic_symbol_p) 4432 { 4433 if (elf_hash_table (info)->tls_sec == NULL) 4434 goto missing_tls_sec; 4435 value -= elfNN_ia64_dtprel_base (info); 4436 } 4437 got_r_type = R_IA64_DTPRELNNLSB; 4438 break; 4439 } 4440 dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); 4441 value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend, 4442 value, got_r_type); 4443 value -= gp_val; 4444 r = ia64_elf_install_value (hit_addr, value, r_type); 4445 } 4446 break; 4447 4448 default: 4449 r = bfd_reloc_notsupported; 4450 break; 4451 } 4452 4453 switch (r) 4454 { 4455 case bfd_reloc_ok: 4456 break; 4457 4458 case bfd_reloc_undefined: 4459 /* This can happen for global table relative relocs if 4460 __gp is undefined. This is a panic situation so we 4461 don't try to continue. */ 4462 (*info->callbacks->undefined_symbol) 4463 (info, "__gp", input_bfd, input_section, rel->r_offset, 1); 4464 return FALSE; 4465 4466 case bfd_reloc_notsupported: 4467 { 4468 const char *name; 4469 4470 if (h) 4471 name = h->root.root.string; 4472 else 4473 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 4474 sym_sec); 4475 (*info->callbacks->warning) (info, _("unsupported reloc"), 4476 name, input_bfd, 4477 input_section, rel->r_offset); 4478 ret_val = FALSE; 4479 } 4480 break; 4481 4482 case bfd_reloc_dangerous: 4483 case bfd_reloc_outofrange: 4484 case bfd_reloc_overflow: 4485 default: 4486 missing_tls_sec: 4487 { 4488 const char *name; 4489 4490 if (h) 4491 name = h->root.root.string; 4492 else 4493 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, 4494 sym_sec); 4495 4496 switch (r_type) 4497 { 4498 case R_IA64_TPREL14: 4499 case R_IA64_TPREL22: 4500 case R_IA64_TPREL64I: 4501 case R_IA64_DTPREL14: 4502 case R_IA64_DTPREL22: 4503 case R_IA64_DTPREL64I: 4504 case R_IA64_DTPREL32LSB: 4505 case R_IA64_DTPREL32MSB: 4506 case R_IA64_DTPREL64LSB: 4507 case R_IA64_DTPREL64MSB: 4508 case R_IA64_LTOFF_TPREL22: 4509 case R_IA64_LTOFF_DTPMOD22: 4510 case R_IA64_LTOFF_DTPREL22: 4511 _bfd_error_handler 4512 /* xgettext:c-format */ 4513 (_("%pB: missing TLS section for relocation %s against `%s'" 4514 " at %#" PRIx64 " in section `%pA'."), 4515 input_bfd, howto->name, name, 4516 (uint64_t) rel->r_offset, input_section); 4517 break; 4518 4519 case R_IA64_PCREL21B: 4520 case R_IA64_PCREL21BI: 4521 case R_IA64_PCREL21M: 4522 case R_IA64_PCREL21F: 4523 if (is_elf_hash_table (info->hash)) 4524 { 4525 /* Relaxtion is always performed for ELF output. 4526 Overflow failures for those relocations mean 4527 that the section is too big to relax. */ 4528 _bfd_error_handler 4529 /* xgettext:c-format */ 4530 (_("%pB: Can't relax br (%s) to `%s' at %#" PRIx64 4531 " in section `%pA' with size %#" PRIx64 4532 " (> 0x1000000)."), 4533 input_bfd, howto->name, name, (uint64_t) rel->r_offset, 4534 input_section, (uint64_t) input_section->size); 4535 break; 4536 } 4537 /* Fall through. */ 4538 default: 4539 (*info->callbacks->reloc_overflow) (info, 4540 &h->root, 4541 name, 4542 howto->name, 4543 (bfd_vma) 0, 4544 input_bfd, 4545 input_section, 4546 rel->r_offset); 4547 break; 4548 } 4549 4550 ret_val = FALSE; 4551 } 4552 break; 4553 } 4554 } 4555 4556 return ret_val; 4557 } 4558 4559 static bfd_boolean 4560 elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd, 4561 struct bfd_link_info *info, 4562 struct elf_link_hash_entry *h, 4563 Elf_Internal_Sym *sym) 4564 { 4565 struct elfNN_ia64_link_hash_table *ia64_info; 4566 struct elfNN_ia64_dyn_sym_info *dyn_i; 4567 4568 ia64_info = elfNN_ia64_hash_table (info); 4569 if (ia64_info == NULL) 4570 return FALSE; 4571 4572 dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); 4573 4574 /* Fill in the PLT data, if required. */ 4575 if (dyn_i && dyn_i->want_plt) 4576 { 4577 Elf_Internal_Rela outrel; 4578 bfd_byte *loc; 4579 asection *plt_sec; 4580 bfd_vma plt_addr, pltoff_addr, gp_val, plt_index; 4581 4582 gp_val = _bfd_get_gp_value (output_bfd); 4583 4584 /* Initialize the minimal PLT entry. */ 4585 4586 plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; 4587 plt_sec = ia64_info->root.splt; 4588 loc = plt_sec->contents + dyn_i->plt_offset; 4589 4590 memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE); 4591 ia64_elf_install_value (loc, plt_index, R_IA64_IMM22); 4592 ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B); 4593 4594 plt_addr = (plt_sec->output_section->vma 4595 + plt_sec->output_offset 4596 + dyn_i->plt_offset); 4597 pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); 4598 4599 /* Initialize the FULL PLT entry, if needed. */ 4600 if (dyn_i->want_plt2) 4601 { 4602 loc = plt_sec->contents + dyn_i->plt2_offset; 4603 4604 memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); 4605 ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); 4606 4607 /* Mark the symbol as undefined, rather than as defined in the 4608 plt section. Leave the value alone. */ 4609 /* ??? We didn't redefine it in adjust_dynamic_symbol in the 4610 first place. But perhaps elflink.c did some for us. */ 4611 if (!h->def_regular) 4612 sym->st_shndx = SHN_UNDEF; 4613 } 4614 4615 /* Create the dynamic relocation. */ 4616 outrel.r_offset = pltoff_addr; 4617 if (bfd_little_endian (output_bfd)) 4618 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB); 4619 else 4620 outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB); 4621 outrel.r_addend = 0; 4622 4623 /* This is fun. In the .IA_64.pltoff section, we've got entries 4624 that correspond both to real PLT entries, and those that 4625 happened to resolve to local symbols but need to be created 4626 to satisfy @pltoff relocations. The .rela.IA_64.pltoff 4627 relocations for the real PLT should come at the end of the 4628 section, so that they can be indexed by plt entry at runtime. 4629 4630 We emitted all of the relocations for the non-PLT @pltoff 4631 entries during relocate_section. So we can consider the 4632 existing sec->reloc_count to be the base of the array of 4633 PLT relocations. */ 4634 4635 loc = ia64_info->rel_pltoff_sec->contents; 4636 loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index) 4637 * sizeof (ElfNN_External_Rela)); 4638 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); 4639 } 4640 4641 /* Mark some specially defined symbols as absolute. */ 4642 if (h == ia64_info->root.hdynamic 4643 || h == ia64_info->root.hgot 4644 || h == ia64_info->root.hplt) 4645 sym->st_shndx = SHN_ABS; 4646 4647 return TRUE; 4648 } 4649 4650 static bfd_boolean 4651 elfNN_ia64_finish_dynamic_sections (bfd *abfd, 4652 struct bfd_link_info *info) 4653 { 4654 struct elfNN_ia64_link_hash_table *ia64_info; 4655 bfd *dynobj; 4656 4657 ia64_info = elfNN_ia64_hash_table (info); 4658 if (ia64_info == NULL) 4659 return FALSE; 4660 4661 dynobj = ia64_info->root.dynobj; 4662 4663 if (ia64_info->root.dynamic_sections_created) 4664 { 4665 ElfNN_External_Dyn *dyncon, *dynconend; 4666 asection *sdyn, *sgotplt; 4667 bfd_vma gp_val; 4668 4669 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4670 sgotplt = ia64_info->root.sgotplt; 4671 BFD_ASSERT (sdyn != NULL); 4672 dyncon = (ElfNN_External_Dyn *) sdyn->contents; 4673 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); 4674 4675 gp_val = _bfd_get_gp_value (abfd); 4676 4677 for (; dyncon < dynconend; dyncon++) 4678 { 4679 Elf_Internal_Dyn dyn; 4680 4681 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); 4682 4683 switch (dyn.d_tag) 4684 { 4685 case DT_PLTGOT: 4686 dyn.d_un.d_ptr = gp_val; 4687 break; 4688 4689 case DT_PLTRELSZ: 4690 dyn.d_un.d_val = (ia64_info->minplt_entries 4691 * sizeof (ElfNN_External_Rela)); 4692 break; 4693 4694 case DT_JMPREL: 4695 /* See the comment above in finish_dynamic_symbol. */ 4696 dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma 4697 + ia64_info->rel_pltoff_sec->output_offset 4698 + (ia64_info->rel_pltoff_sec->reloc_count 4699 * sizeof (ElfNN_External_Rela))); 4700 break; 4701 4702 case DT_IA_64_PLT_RESERVE: 4703 dyn.d_un.d_ptr = (sgotplt->output_section->vma 4704 + sgotplt->output_offset); 4705 break; 4706 } 4707 4708 bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon); 4709 } 4710 4711 /* Initialize the PLT0 entry. */ 4712 if (ia64_info->root.splt) 4713 { 4714 bfd_byte *loc = ia64_info->root.splt->contents; 4715 bfd_vma pltres; 4716 4717 memcpy (loc, plt_header, PLT_HEADER_SIZE); 4718 4719 pltres = (sgotplt->output_section->vma 4720 + sgotplt->output_offset 4721 - gp_val); 4722 4723 ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22); 4724 } 4725 } 4726 4727 return TRUE; 4728 } 4729 4730 /* ELF file flag handling: */ 4732 4733 /* Function to keep IA-64 specific file flags. */ 4734 static bfd_boolean 4735 elfNN_ia64_set_private_flags (bfd *abfd, flagword flags) 4736 { 4737 BFD_ASSERT (!elf_flags_init (abfd) 4738 || elf_elfheader (abfd)->e_flags == flags); 4739 4740 elf_elfheader (abfd)->e_flags = flags; 4741 elf_flags_init (abfd) = TRUE; 4742 return TRUE; 4743 } 4744 4745 /* Merge backend specific data from an object file to the output 4746 object file when linking. */ 4747 static bfd_boolean 4748 elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 4749 { 4750 bfd *obfd = info->output_bfd; 4751 flagword out_flags; 4752 flagword in_flags; 4753 bfd_boolean ok = TRUE; 4754 4755 /* Don't even pretend to support mixed-format linking. */ 4756 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4757 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4758 return FALSE; 4759 4760 in_flags = elf_elfheader (ibfd)->e_flags; 4761 out_flags = elf_elfheader (obfd)->e_flags; 4762 4763 if (! elf_flags_init (obfd)) 4764 { 4765 elf_flags_init (obfd) = TRUE; 4766 elf_elfheader (obfd)->e_flags = in_flags; 4767 4768 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4769 && bfd_get_arch_info (obfd)->the_default) 4770 { 4771 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 4772 bfd_get_mach (ibfd)); 4773 } 4774 4775 return TRUE; 4776 } 4777 4778 /* Check flag compatibility. */ 4779 if (in_flags == out_flags) 4780 return TRUE; 4781 4782 /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ 4783 if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) 4784 elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; 4785 4786 if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) 4787 { 4788 _bfd_error_handler 4789 (_("%pB: linking trap-on-NULL-dereference with non-trapping files"), 4790 ibfd); 4791 4792 bfd_set_error (bfd_error_bad_value); 4793 ok = FALSE; 4794 } 4795 if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) 4796 { 4797 _bfd_error_handler 4798 (_("%pB: linking big-endian files with little-endian files"), 4799 ibfd); 4800 4801 bfd_set_error (bfd_error_bad_value); 4802 ok = FALSE; 4803 } 4804 if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) 4805 { 4806 _bfd_error_handler 4807 (_("%pB: linking 64-bit files with 32-bit files"), 4808 ibfd); 4809 4810 bfd_set_error (bfd_error_bad_value); 4811 ok = FALSE; 4812 } 4813 if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) 4814 { 4815 _bfd_error_handler 4816 (_("%pB: linking constant-gp files with non-constant-gp files"), 4817 ibfd); 4818 4819 bfd_set_error (bfd_error_bad_value); 4820 ok = FALSE; 4821 } 4822 if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) 4823 != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) 4824 { 4825 _bfd_error_handler 4826 (_("%pB: linking auto-pic files with non-auto-pic files"), 4827 ibfd); 4828 4829 bfd_set_error (bfd_error_bad_value); 4830 ok = FALSE; 4831 } 4832 4833 return ok; 4834 } 4835 4836 static bfd_boolean 4837 elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr) 4838 { 4839 FILE *file = (FILE *) ptr; 4840 flagword flags = elf_elfheader (abfd)->e_flags; 4841 4842 BFD_ASSERT (abfd != NULL && ptr != NULL); 4843 4844 fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", 4845 (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", 4846 (flags & EF_IA_64_EXT) ? "EXT, " : "", 4847 (flags & EF_IA_64_BE) ? "BE, " : "LE, ", 4848 (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", 4849 (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", 4850 (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", 4851 (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", 4852 (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); 4853 4854 _bfd_elf_print_private_bfd_data (abfd, ptr); 4855 return TRUE; 4856 } 4857 4858 static enum elf_reloc_type_class 4859 elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4860 const asection *rel_sec ATTRIBUTE_UNUSED, 4861 const Elf_Internal_Rela *rela) 4862 { 4863 switch ((int) ELFNN_R_TYPE (rela->r_info)) 4864 { 4865 case R_IA64_REL32MSB: 4866 case R_IA64_REL32LSB: 4867 case R_IA64_REL64MSB: 4868 case R_IA64_REL64LSB: 4869 return reloc_class_relative; 4870 case R_IA64_IPLTMSB: 4871 case R_IA64_IPLTLSB: 4872 return reloc_class_plt; 4873 case R_IA64_COPY: 4874 return reloc_class_copy; 4875 default: 4876 return reloc_class_normal; 4877 } 4878 } 4879 4880 static const struct bfd_elf_special_section elfNN_ia64_special_sections[] = 4881 { 4882 { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, 4883 { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, 4884 { NULL, 0, 0, 0, 0 } 4885 }; 4886 4887 static bfd_boolean 4888 elfNN_ia64_object_p (bfd *abfd) 4889 { 4890 asection *sec; 4891 asection *group, *unwi, *unw; 4892 flagword flags; 4893 const char *name; 4894 char *unwi_name, *unw_name; 4895 bfd_size_type amt; 4896 4897 if (abfd->flags & DYNAMIC) 4898 return TRUE; 4899 4900 /* Flags for fake group section. */ 4901 flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE 4902 | SEC_EXCLUDE); 4903 4904 /* We add a fake section group for each .gnu.linkonce.t.* section, 4905 which isn't in a section group, and its unwind sections. */ 4906 for (sec = abfd->sections; sec != NULL; sec = sec->next) 4907 { 4908 if (elf_sec_group (sec) == NULL 4909 && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) 4910 == (SEC_LINK_ONCE | SEC_CODE)) 4911 && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) 4912 { 4913 name = sec->name + 16; 4914 4915 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); 4916 unwi_name = bfd_alloc (abfd, amt); 4917 if (!unwi_name) 4918 return FALSE; 4919 4920 strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); 4921 unwi = bfd_get_section_by_name (abfd, unwi_name); 4922 4923 amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); 4924 unw_name = bfd_alloc (abfd, amt); 4925 if (!unw_name) 4926 return FALSE; 4927 4928 strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); 4929 unw = bfd_get_section_by_name (abfd, unw_name); 4930 4931 /* We need to create a fake group section for it and its 4932 unwind sections. */ 4933 group = bfd_make_section_anyway_with_flags (abfd, name, 4934 flags); 4935 if (group == NULL) 4936 return FALSE; 4937 4938 /* Move the fake group section to the beginning. */ 4939 bfd_section_list_remove (abfd, group); 4940 bfd_section_list_prepend (abfd, group); 4941 4942 elf_next_in_group (group) = sec; 4943 4944 elf_group_name (sec) = name; 4945 elf_next_in_group (sec) = sec; 4946 elf_sec_group (sec) = group; 4947 4948 if (unwi) 4949 { 4950 elf_group_name (unwi) = name; 4951 elf_next_in_group (unwi) = sec; 4952 elf_next_in_group (sec) = unwi; 4953 elf_sec_group (unwi) = group; 4954 } 4955 4956 if (unw) 4957 { 4958 elf_group_name (unw) = name; 4959 if (unwi) 4960 { 4961 elf_next_in_group (unw) = elf_next_in_group (unwi); 4962 elf_next_in_group (unwi) = unw; 4963 } 4964 else 4965 { 4966 elf_next_in_group (unw) = sec; 4967 elf_next_in_group (sec) = unw; 4968 } 4969 elf_sec_group (unw) = group; 4970 } 4971 4972 /* Fake SHT_GROUP section header. */ 4973 elf_section_data (group)->this_hdr.bfd_section = group; 4974 elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; 4975 } 4976 } 4977 return TRUE; 4978 } 4979 4980 static bfd_boolean 4981 elfNN_ia64_hpux_vec (const bfd_target *vec) 4982 { 4983 extern const bfd_target ia64_elfNN_hpux_be_vec; 4984 return (vec == &ia64_elfNN_hpux_be_vec); 4985 } 4986 4987 static void 4988 elfNN_hpux_post_process_headers (bfd *abfd, 4989 struct bfd_link_info *info ATTRIBUTE_UNUSED) 4990 { 4991 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); 4992 4993 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; 4994 i_ehdrp->e_ident[EI_ABIVERSION] = 1; 4995 } 4996 4997 static bfd_boolean 4998 elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 4999 asection *sec, int *retval) 5000 { 5001 if (bfd_is_com_section (sec)) 5002 { 5003 *retval = SHN_IA_64_ANSI_COMMON; 5004 return TRUE; 5005 } 5006 return FALSE; 5007 } 5008 5009 static void 5010 elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, 5011 asymbol *asym) 5012 { 5013 elf_symbol_type *elfsym = (elf_symbol_type *) asym; 5014 5015 switch (elfsym->internal_elf_sym.st_shndx) 5016 { 5017 case SHN_IA_64_ANSI_COMMON: 5018 asym->section = bfd_com_section_ptr; 5019 asym->value = elfsym->internal_elf_sym.st_size; 5020 asym->flags &= ~BSF_GLOBAL; 5021 break; 5022 } 5023 } 5024 5025 #define TARGET_LITTLE_SYM ia64_elfNN_le_vec 5027 #define TARGET_LITTLE_NAME "elfNN-ia64-little" 5028 #define TARGET_BIG_SYM ia64_elfNN_be_vec 5029 #define TARGET_BIG_NAME "elfNN-ia64-big" 5030 #define ELF_ARCH bfd_arch_ia64 5031 #define ELF_TARGET_ID IA64_ELF_DATA 5032 #define ELF_MACHINE_CODE EM_IA_64 5033 #define ELF_MACHINE_ALT1 1999 /* EAS2.3 */ 5034 #define ELF_MACHINE_ALT2 1998 /* EAS2.2 */ 5035 #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ 5036 #define ELF_COMMONPAGESIZE 0x4000 /* 16KB */ 5037 5038 #define elf_backend_section_from_shdr \ 5039 elfNN_ia64_section_from_shdr 5040 #define elf_backend_section_flags \ 5041 elfNN_ia64_section_flags 5042 #define elf_backend_fake_sections \ 5043 elfNN_ia64_fake_sections 5044 #define elf_backend_final_write_processing \ 5045 elfNN_ia64_final_write_processing 5046 #define elf_backend_add_symbol_hook \ 5047 elfNN_ia64_add_symbol_hook 5048 #define elf_backend_additional_program_headers \ 5049 elfNN_ia64_additional_program_headers 5050 #define elf_backend_modify_segment_map \ 5051 elfNN_ia64_modify_segment_map 5052 #define elf_backend_modify_program_headers \ 5053 elfNN_ia64_modify_program_headers 5054 #define elf_info_to_howto \ 5055 elfNN_ia64_info_to_howto 5056 5057 #define bfd_elfNN_bfd_reloc_type_lookup \ 5058 ia64_elf_reloc_type_lookup 5059 #define bfd_elfNN_bfd_reloc_name_lookup \ 5060 ia64_elf_reloc_name_lookup 5061 #define bfd_elfNN_bfd_is_local_label_name \ 5062 elfNN_ia64_is_local_label_name 5063 #define bfd_elfNN_bfd_relax_section \ 5064 elfNN_ia64_relax_section 5065 5066 #define elf_backend_object_p \ 5067 elfNN_ia64_object_p 5068 5069 /* Stuff for the BFD linker: */ 5070 #define bfd_elfNN_bfd_link_hash_table_create \ 5071 elfNN_ia64_hash_table_create 5072 #define elf_backend_create_dynamic_sections \ 5073 elfNN_ia64_create_dynamic_sections 5074 #define elf_backend_check_relocs \ 5075 elfNN_ia64_check_relocs 5076 #define elf_backend_adjust_dynamic_symbol \ 5077 elfNN_ia64_adjust_dynamic_symbol 5078 #define elf_backend_size_dynamic_sections \ 5079 elfNN_ia64_size_dynamic_sections 5080 #define elf_backend_omit_section_dynsym \ 5081 _bfd_elf_omit_section_dynsym_all 5082 #define elf_backend_relocate_section \ 5083 elfNN_ia64_relocate_section 5084 #define elf_backend_finish_dynamic_symbol \ 5085 elfNN_ia64_finish_dynamic_symbol 5086 #define elf_backend_finish_dynamic_sections \ 5087 elfNN_ia64_finish_dynamic_sections 5088 #define bfd_elfNN_bfd_final_link \ 5089 elfNN_ia64_final_link 5090 5091 #define bfd_elfNN_bfd_merge_private_bfd_data \ 5092 elfNN_ia64_merge_private_bfd_data 5093 #define bfd_elfNN_bfd_set_private_flags \ 5094 elfNN_ia64_set_private_flags 5095 #define bfd_elfNN_bfd_print_private_bfd_data \ 5096 elfNN_ia64_print_private_bfd_data 5097 5098 #define elf_backend_plt_readonly 1 5099 #define elf_backend_can_gc_sections 1 5100 #define elf_backend_want_plt_sym 0 5101 #define elf_backend_plt_alignment 5 5102 #define elf_backend_got_header_size 0 5103 #define elf_backend_want_got_plt 1 5104 #define elf_backend_may_use_rel_p 1 5105 #define elf_backend_may_use_rela_p 1 5106 #define elf_backend_default_use_rela_p 1 5107 #define elf_backend_want_dynbss 0 5108 #define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect 5109 #define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol 5110 #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol 5111 #define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class 5112 #define elf_backend_rela_normal 1 5113 #define elf_backend_dtrel_excludes_plt 1 5114 #define elf_backend_special_sections elfNN_ia64_special_sections 5115 #define elf_backend_default_execstack 0 5116 5117 /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with 5118 SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. 5119 We don't want to flood users with so many error messages. We turn 5120 off the warning for now. It will be turned on later when the Intel 5121 compiler is fixed. */ 5122 #define elf_backend_link_order_error_handler NULL 5123 5124 #include "elfNN-target.h" 5125 5126 /* HPUX-specific vectors. */ 5127 5128 #undef TARGET_LITTLE_SYM 5129 #undef TARGET_LITTLE_NAME 5130 #undef TARGET_BIG_SYM 5131 #define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec 5132 #undef TARGET_BIG_NAME 5133 #define TARGET_BIG_NAME "elfNN-ia64-hpux-big" 5134 5135 /* These are HP-UX specific functions. */ 5136 5137 #undef elf_backend_post_process_headers 5138 #define elf_backend_post_process_headers elfNN_hpux_post_process_headers 5139 5140 #undef elf_backend_section_from_bfd_section 5141 #define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section 5142 5143 #undef elf_backend_symbol_processing 5144 #define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing 5145 5146 #undef elf_backend_want_p_paddr_set_to_zero 5147 #define elf_backend_want_p_paddr_set_to_zero 1 5148 5149 #undef ELF_COMMONPAGESIZE 5150 #undef ELF_OSABI 5151 #define ELF_OSABI ELFOSABI_HPUX 5152 5153 #undef elfNN_bed 5154 #define elfNN_bed elfNN_ia64_hpux_bed 5155 5156 #include "elfNN-target.h" 5157
Indexes created Fri Mar 27 00:22:57 UTC 2026