| 1 | /* Support for HPPA 64-bit ELF |
| 2 | Copyright (C) 1999-2015 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "alloca-conf.h" |
| 23 | #include "bfd.h" |
| 24 | #include "libbfd.h" |
| 25 | #include "elf-bfd.h" |
| 26 | #include "elf/hppa.h" |
| 27 | #include "libhppa.h" |
| 28 | #include "elf64-hppa.h" |
| 29 | |
| 30 | |
| 31 | #define ARCH_SIZE 64 |
| 32 | |
| 33 | #define PLT_ENTRY_SIZE 0x10 |
| 34 | #define DLT_ENTRY_SIZE 0x8 |
| 35 | #define OPD_ENTRY_SIZE 0x20 |
| 36 | |
| 37 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl" |
| 38 | |
| 39 | /* The stub is supposed to load the target address and target's DP |
| 40 | value out of the PLT, then do an external branch to the target |
| 41 | address. |
| 42 | |
| 43 | LDD PLTOFF(%r27),%r1 |
| 44 | BVE (%r1) |
| 45 | LDD PLTOFF+8(%r27),%r27 |
| 46 | |
| 47 | Note that we must use the LDD with a 14 bit displacement, not the one |
| 48 | with a 5 bit displacement. */ |
| 49 | static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00, |
| 50 | 0x53, 0x7b, 0x00, 0x00 }; |
| 51 | |
| 52 | struct elf64_hppa_link_hash_entry |
| 53 | { |
| 54 | struct elf_link_hash_entry eh; |
| 55 | |
| 56 | /* Offsets for this symbol in various linker sections. */ |
| 57 | bfd_vma dlt_offset; |
| 58 | bfd_vma plt_offset; |
| 59 | bfd_vma opd_offset; |
| 60 | bfd_vma stub_offset; |
| 61 | |
| 62 | /* The index of the (possibly local) symbol in the input bfd and its |
| 63 | associated BFD. Needed so that we can have relocs against local |
| 64 | symbols in shared libraries. */ |
| 65 | long sym_indx; |
| 66 | bfd *owner; |
| 67 | |
| 68 | /* Dynamic symbols may need to have two different values. One for |
| 69 | the dynamic symbol table, one for the normal symbol table. |
| 70 | |
| 71 | In such cases we store the symbol's real value and section |
| 72 | index here so we can restore the real value before we write |
| 73 | the normal symbol table. */ |
| 74 | bfd_vma st_value; |
| 75 | int st_shndx; |
| 76 | |
| 77 | /* Used to count non-got, non-plt relocations for delayed sizing |
| 78 | of relocation sections. */ |
| 79 | struct elf64_hppa_dyn_reloc_entry |
| 80 | { |
| 81 | /* Next relocation in the chain. */ |
| 82 | struct elf64_hppa_dyn_reloc_entry *next; |
| 83 | |
| 84 | /* The type of the relocation. */ |
| 85 | int type; |
| 86 | |
| 87 | /* The input section of the relocation. */ |
| 88 | asection *sec; |
| 89 | |
| 90 | /* Number of relocs copied in this section. */ |
| 91 | bfd_size_type count; |
| 92 | |
| 93 | /* The index of the section symbol for the input section of |
| 94 | the relocation. Only needed when building shared libraries. */ |
| 95 | int sec_symndx; |
| 96 | |
| 97 | /* The offset within the input section of the relocation. */ |
| 98 | bfd_vma offset; |
| 99 | |
| 100 | /* The addend for the relocation. */ |
| 101 | bfd_vma addend; |
| 102 | |
| 103 | } *reloc_entries; |
| 104 | |
| 105 | /* Nonzero if this symbol needs an entry in one of the linker |
| 106 | sections. */ |
| 107 | unsigned want_dlt; |
| 108 | unsigned want_plt; |
| 109 | unsigned want_opd; |
| 110 | unsigned want_stub; |
| 111 | }; |
| 112 | |
| 113 | struct elf64_hppa_link_hash_table |
| 114 | { |
| 115 | struct elf_link_hash_table root; |
| 116 | |
| 117 | /* Shortcuts to get to the various linker defined sections. */ |
| 118 | asection *dlt_sec; |
| 119 | asection *dlt_rel_sec; |
| 120 | asection *plt_sec; |
| 121 | asection *plt_rel_sec; |
| 122 | asection *opd_sec; |
| 123 | asection *opd_rel_sec; |
| 124 | asection *other_rel_sec; |
| 125 | |
| 126 | /* Offset of __gp within .plt section. When the PLT gets large we want |
| 127 | to slide __gp into the PLT section so that we can continue to use |
| 128 | single DP relative instructions to load values out of the PLT. */ |
| 129 | bfd_vma gp_offset; |
| 130 | |
| 131 | /* Note this is not strictly correct. We should create a stub section for |
| 132 | each input section with calls. The stub section should be placed before |
| 133 | the section with the call. */ |
| 134 | asection *stub_sec; |
| 135 | |
| 136 | bfd_vma text_segment_base; |
| 137 | bfd_vma data_segment_base; |
| 138 | |
| 139 | /* We build tables to map from an input section back to its |
| 140 | symbol index. This is the BFD for which we currently have |
| 141 | a map. */ |
| 142 | bfd *section_syms_bfd; |
| 143 | |
| 144 | /* Array of symbol numbers for each input section attached to the |
| 145 | current BFD. */ |
| 146 | int *section_syms; |
| 147 | }; |
| 148 | |
| 149 | #define hppa_link_hash_table(p) \ |
| 150 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 151 | == HPPA64_ELF_DATA ? ((struct elf64_hppa_link_hash_table *) ((p)->hash)) : NULL) |
| 152 | |
| 153 | #define hppa_elf_hash_entry(ent) \ |
| 154 | ((struct elf64_hppa_link_hash_entry *)(ent)) |
| 155 | |
| 156 | #define eh_name(eh) \ |
| 157 | (eh ? eh->root.root.string : "<undef>") |
| 158 | |
| 159 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
| 160 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
| 161 | |
| 162 | static struct bfd_link_hash_table *elf64_hppa_hash_table_create |
| 163 | (bfd *abfd); |
| 164 | |
| 165 | /* This must follow the definitions of the various derived linker |
| 166 | hash tables and shared functions. */ |
| 167 | #include "elf-hppa.h" |
| 168 | |
| 169 | static bfd_boolean elf64_hppa_object_p |
| 170 | (bfd *); |
| 171 | |
| 172 | static void elf64_hppa_post_process_headers |
| 173 | (bfd *, struct bfd_link_info *); |
| 174 | |
| 175 | static bfd_boolean elf64_hppa_create_dynamic_sections |
| 176 | (bfd *, struct bfd_link_info *); |
| 177 | |
| 178 | static bfd_boolean elf64_hppa_adjust_dynamic_symbol |
| 179 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
| 180 | |
| 181 | static bfd_boolean elf64_hppa_mark_milli_and_exported_functions |
| 182 | (struct elf_link_hash_entry *, void *); |
| 183 | |
| 184 | static bfd_boolean elf64_hppa_size_dynamic_sections |
| 185 | (bfd *, struct bfd_link_info *); |
| 186 | |
| 187 | static int elf64_hppa_link_output_symbol_hook |
| 188 | (struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
| 189 | asection *, struct elf_link_hash_entry *); |
| 190 | |
| 191 | static bfd_boolean elf64_hppa_finish_dynamic_symbol |
| 192 | (bfd *, struct bfd_link_info *, |
| 193 | struct elf_link_hash_entry *, Elf_Internal_Sym *); |
| 194 | |
| 195 | static bfd_boolean elf64_hppa_finish_dynamic_sections |
| 196 | (bfd *, struct bfd_link_info *); |
| 197 | |
| 198 | static bfd_boolean elf64_hppa_check_relocs |
| 199 | (bfd *, struct bfd_link_info *, |
| 200 | asection *, const Elf_Internal_Rela *); |
| 201 | |
| 202 | static bfd_boolean elf64_hppa_dynamic_symbol_p |
| 203 | (struct elf_link_hash_entry *, struct bfd_link_info *); |
| 204 | |
| 205 | static bfd_boolean elf64_hppa_mark_exported_functions |
| 206 | (struct elf_link_hash_entry *, void *); |
| 207 | |
| 208 | static bfd_boolean elf64_hppa_finalize_opd |
| 209 | (struct elf_link_hash_entry *, void *); |
| 210 | |
| 211 | static bfd_boolean elf64_hppa_finalize_dlt |
| 212 | (struct elf_link_hash_entry *, void *); |
| 213 | |
| 214 | static bfd_boolean allocate_global_data_dlt |
| 215 | (struct elf_link_hash_entry *, void *); |
| 216 | |
| 217 | static bfd_boolean allocate_global_data_plt |
| 218 | (struct elf_link_hash_entry *, void *); |
| 219 | |
| 220 | static bfd_boolean allocate_global_data_stub |
| 221 | (struct elf_link_hash_entry *, void *); |
| 222 | |
| 223 | static bfd_boolean allocate_global_data_opd |
| 224 | (struct elf_link_hash_entry *, void *); |
| 225 | |
| 226 | static bfd_boolean get_reloc_section |
| 227 | (bfd *, struct elf64_hppa_link_hash_table *, asection *); |
| 228 | |
| 229 | static bfd_boolean count_dyn_reloc |
| 230 | (bfd *, struct elf64_hppa_link_hash_entry *, |
| 231 | int, asection *, int, bfd_vma, bfd_vma); |
| 232 | |
| 233 | static bfd_boolean allocate_dynrel_entries |
| 234 | (struct elf_link_hash_entry *, void *); |
| 235 | |
| 236 | static bfd_boolean elf64_hppa_finalize_dynreloc |
| 237 | (struct elf_link_hash_entry *, void *); |
| 238 | |
| 239 | static bfd_boolean get_opd |
| 240 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
| 241 | |
| 242 | static bfd_boolean get_plt |
| 243 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
| 244 | |
| 245 | static bfd_boolean get_dlt |
| 246 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
| 247 | |
| 248 | static bfd_boolean get_stub |
| 249 | (bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *); |
| 250 | |
| 251 | static int elf64_hppa_elf_get_symbol_type |
| 252 | (Elf_Internal_Sym *, int); |
| 253 | |
| 254 | /* Initialize an entry in the link hash table. */ |
| 255 | |
| 256 | static struct bfd_hash_entry * |
| 257 | hppa64_link_hash_newfunc (struct bfd_hash_entry *entry, |
| 258 | struct bfd_hash_table *table, |
| 259 | const char *string) |
| 260 | { |
| 261 | /* Allocate the structure if it has not already been allocated by a |
| 262 | subclass. */ |
| 263 | if (entry == NULL) |
| 264 | { |
| 265 | entry = bfd_hash_allocate (table, |
| 266 | sizeof (struct elf64_hppa_link_hash_entry)); |
| 267 | if (entry == NULL) |
| 268 | return entry; |
| 269 | } |
| 270 | |
| 271 | /* Call the allocation method of the superclass. */ |
| 272 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
| 273 | if (entry != NULL) |
| 274 | { |
| 275 | struct elf64_hppa_link_hash_entry *hh; |
| 276 | |
| 277 | /* Initialize our local data. All zeros. */ |
| 278 | hh = hppa_elf_hash_entry (entry); |
| 279 | memset (&hh->dlt_offset, 0, |
| 280 | (sizeof (struct elf64_hppa_link_hash_entry) |
| 281 | - offsetof (struct elf64_hppa_link_hash_entry, dlt_offset))); |
| 282 | } |
| 283 | |
| 284 | return entry; |
| 285 | } |
| 286 | |
| 287 | /* Create the derived linker hash table. The PA64 ELF port uses this |
| 288 | derived hash table to keep information specific to the PA ElF |
| 289 | linker (without using static variables). */ |
| 290 | |
| 291 | static struct bfd_link_hash_table* |
| 292 | elf64_hppa_hash_table_create (bfd *abfd) |
| 293 | { |
| 294 | struct elf64_hppa_link_hash_table *htab; |
| 295 | bfd_size_type amt = sizeof (*htab); |
| 296 | |
| 297 | htab = bfd_zmalloc (amt); |
| 298 | if (htab == NULL) |
| 299 | return NULL; |
| 300 | |
| 301 | if (!_bfd_elf_link_hash_table_init (&htab->root, abfd, |
| 302 | hppa64_link_hash_newfunc, |
| 303 | sizeof (struct elf64_hppa_link_hash_entry), |
| 304 | HPPA64_ELF_DATA)) |
| 305 | { |
| 306 | free (htab); |
| 307 | return NULL; |
| 308 | } |
| 309 | |
| 310 | htab->text_segment_base = (bfd_vma) -1; |
| 311 | htab->data_segment_base = (bfd_vma) -1; |
| 312 | |
| 313 | return &htab->root.root; |
| 314 | } |
| 315 | \f |
| 316 | /* Return nonzero if ABFD represents a PA2.0 ELF64 file. |
| 317 | |
| 318 | Additionally we set the default architecture and machine. */ |
| 319 | static bfd_boolean |
| 320 | elf64_hppa_object_p (bfd *abfd) |
| 321 | { |
| 322 | Elf_Internal_Ehdr * i_ehdrp; |
| 323 | unsigned int flags; |
| 324 | |
| 325 | i_ehdrp = elf_elfheader (abfd); |
| 326 | if (strcmp (bfd_get_target (abfd), "elf64-hppa-linux") == 0) |
| 327 | { |
| 328 | /* GCC on hppa-linux produces binaries with OSABI=GNU, |
| 329 | but the kernel produces corefiles with OSABI=SysV. */ |
| 330 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU |
| 331 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ |
| 332 | return FALSE; |
| 333 | } |
| 334 | else |
| 335 | { |
| 336 | /* HPUX produces binaries with OSABI=HPUX, |
| 337 | but the kernel produces corefiles with OSABI=SysV. */ |
| 338 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX |
| 339 | && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ |
| 340 | return FALSE; |
| 341 | } |
| 342 | |
| 343 | flags = i_ehdrp->e_flags; |
| 344 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) |
| 345 | { |
| 346 | case EFA_PARISC_1_0: |
| 347 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); |
| 348 | case EFA_PARISC_1_1: |
| 349 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); |
| 350 | case EFA_PARISC_2_0: |
| 351 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) |
| 352 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); |
| 353 | else |
| 354 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); |
| 355 | case EFA_PARISC_2_0 | EF_PARISC_WIDE: |
| 356 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); |
| 357 | } |
| 358 | /* Don't be fussy. */ |
| 359 | return TRUE; |
| 360 | } |
| 361 | |
| 362 | /* Given section type (hdr->sh_type), return a boolean indicating |
| 363 | whether or not the section is an elf64-hppa specific section. */ |
| 364 | static bfd_boolean |
| 365 | elf64_hppa_section_from_shdr (bfd *abfd, |
| 366 | Elf_Internal_Shdr *hdr, |
| 367 | const char *name, |
| 368 | int shindex) |
| 369 | { |
| 370 | switch (hdr->sh_type) |
| 371 | { |
| 372 | case SHT_PARISC_EXT: |
| 373 | if (strcmp (name, ".PARISC.archext") != 0) |
| 374 | return FALSE; |
| 375 | break; |
| 376 | case SHT_PARISC_UNWIND: |
| 377 | if (strcmp (name, ".PARISC.unwind") != 0) |
| 378 | return FALSE; |
| 379 | break; |
| 380 | case SHT_PARISC_DOC: |
| 381 | case SHT_PARISC_ANNOT: |
| 382 | default: |
| 383 | return FALSE; |
| 384 | } |
| 385 | |
| 386 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
| 387 | return FALSE; |
| 388 | |
| 389 | return TRUE; |
| 390 | } |
| 391 | |
| 392 | /* SEC is a section containing relocs for an input BFD when linking; return |
| 393 | a suitable section for holding relocs in the output BFD for a link. */ |
| 394 | |
| 395 | static bfd_boolean |
| 396 | get_reloc_section (bfd *abfd, |
| 397 | struct elf64_hppa_link_hash_table *hppa_info, |
| 398 | asection *sec) |
| 399 | { |
| 400 | const char *srel_name; |
| 401 | asection *srel; |
| 402 | bfd *dynobj; |
| 403 | |
| 404 | srel_name = (bfd_elf_string_from_elf_section |
| 405 | (abfd, elf_elfheader(abfd)->e_shstrndx, |
| 406 | _bfd_elf_single_rel_hdr(sec)->sh_name)); |
| 407 | if (srel_name == NULL) |
| 408 | return FALSE; |
| 409 | |
| 410 | dynobj = hppa_info->root.dynobj; |
| 411 | if (!dynobj) |
| 412 | hppa_info->root.dynobj = dynobj = abfd; |
| 413 | |
| 414 | srel = bfd_get_linker_section (dynobj, srel_name); |
| 415 | if (srel == NULL) |
| 416 | { |
| 417 | srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, |
| 418 | (SEC_ALLOC |
| 419 | | SEC_LOAD |
| 420 | | SEC_HAS_CONTENTS |
| 421 | | SEC_IN_MEMORY |
| 422 | | SEC_LINKER_CREATED |
| 423 | | SEC_READONLY)); |
| 424 | if (srel == NULL |
| 425 | || !bfd_set_section_alignment (dynobj, srel, 3)) |
| 426 | return FALSE; |
| 427 | } |
| 428 | |
| 429 | hppa_info->other_rel_sec = srel; |
| 430 | return TRUE; |
| 431 | } |
| 432 | |
| 433 | /* Add a new entry to the list of dynamic relocations against DYN_H. |
| 434 | |
| 435 | We use this to keep a record of all the FPTR relocations against a |
| 436 | particular symbol so that we can create FPTR relocations in the |
| 437 | output file. */ |
| 438 | |
| 439 | static bfd_boolean |
| 440 | count_dyn_reloc (bfd *abfd, |
| 441 | struct elf64_hppa_link_hash_entry *hh, |
| 442 | int type, |
| 443 | asection *sec, |
| 444 | int sec_symndx, |
| 445 | bfd_vma offset, |
| 446 | bfd_vma addend) |
| 447 | { |
| 448 | struct elf64_hppa_dyn_reloc_entry *rent; |
| 449 | |
| 450 | rent = (struct elf64_hppa_dyn_reloc_entry *) |
| 451 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)); |
| 452 | if (!rent) |
| 453 | return FALSE; |
| 454 | |
| 455 | rent->next = hh->reloc_entries; |
| 456 | rent->type = type; |
| 457 | rent->sec = sec; |
| 458 | rent->sec_symndx = sec_symndx; |
| 459 | rent->offset = offset; |
| 460 | rent->addend = addend; |
| 461 | hh->reloc_entries = rent; |
| 462 | |
| 463 | return TRUE; |
| 464 | } |
| 465 | |
| 466 | /* Return a pointer to the local DLT, PLT and OPD reference counts |
| 467 | for ABFD. Returns NULL if the storage allocation fails. */ |
| 468 | |
| 469 | static bfd_signed_vma * |
| 470 | hppa64_elf_local_refcounts (bfd *abfd) |
| 471 | { |
| 472 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 473 | bfd_signed_vma *local_refcounts; |
| 474 | |
| 475 | local_refcounts = elf_local_got_refcounts (abfd); |
| 476 | if (local_refcounts == NULL) |
| 477 | { |
| 478 | bfd_size_type size; |
| 479 | |
| 480 | /* Allocate space for local DLT, PLT and OPD reference |
| 481 | counts. Done this way to save polluting elf_obj_tdata |
| 482 | with another target specific pointer. */ |
| 483 | size = symtab_hdr->sh_info; |
| 484 | size *= 3 * sizeof (bfd_signed_vma); |
| 485 | local_refcounts = bfd_zalloc (abfd, size); |
| 486 | elf_local_got_refcounts (abfd) = local_refcounts; |
| 487 | } |
| 488 | return local_refcounts; |
| 489 | } |
| 490 | |
| 491 | /* Scan the RELOCS and record the type of dynamic entries that each |
| 492 | referenced symbol needs. */ |
| 493 | |
| 494 | static bfd_boolean |
| 495 | elf64_hppa_check_relocs (bfd *abfd, |
| 496 | struct bfd_link_info *info, |
| 497 | asection *sec, |
| 498 | const Elf_Internal_Rela *relocs) |
| 499 | { |
| 500 | struct elf64_hppa_link_hash_table *hppa_info; |
| 501 | const Elf_Internal_Rela *relend; |
| 502 | Elf_Internal_Shdr *symtab_hdr; |
| 503 | const Elf_Internal_Rela *rel; |
| 504 | unsigned int sec_symndx; |
| 505 | |
| 506 | if (info->relocatable) |
| 507 | return TRUE; |
| 508 | |
| 509 | /* If this is the first dynamic object found in the link, create |
| 510 | the special sections required for dynamic linking. */ |
| 511 | if (! elf_hash_table (info)->dynamic_sections_created) |
| 512 | { |
| 513 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) |
| 514 | return FALSE; |
| 515 | } |
| 516 | |
| 517 | hppa_info = hppa_link_hash_table (info); |
| 518 | if (hppa_info == NULL) |
| 519 | return FALSE; |
| 520 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 521 | |
| 522 | /* If necessary, build a new table holding section symbols indices |
| 523 | for this BFD. */ |
| 524 | |
| 525 | if (info->shared && hppa_info->section_syms_bfd != abfd) |
| 526 | { |
| 527 | unsigned long i; |
| 528 | unsigned int highest_shndx; |
| 529 | Elf_Internal_Sym *local_syms = NULL; |
| 530 | Elf_Internal_Sym *isym, *isymend; |
| 531 | bfd_size_type amt; |
| 532 | |
| 533 | /* We're done with the old cache of section index to section symbol |
| 534 | index information. Free it. |
| 535 | |
| 536 | ?!? Note we leak the last section_syms array. Presumably we |
| 537 | could free it in one of the later routines in this file. */ |
| 538 | if (hppa_info->section_syms) |
| 539 | free (hppa_info->section_syms); |
| 540 | |
| 541 | /* Read this BFD's local symbols. */ |
| 542 | if (symtab_hdr->sh_info != 0) |
| 543 | { |
| 544 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
| 545 | if (local_syms == NULL) |
| 546 | local_syms = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
| 547 | symtab_hdr->sh_info, 0, |
| 548 | NULL, NULL, NULL); |
| 549 | if (local_syms == NULL) |
| 550 | return FALSE; |
| 551 | } |
| 552 | |
| 553 | /* Record the highest section index referenced by the local symbols. */ |
| 554 | highest_shndx = 0; |
| 555 | isymend = local_syms + symtab_hdr->sh_info; |
| 556 | for (isym = local_syms; isym < isymend; isym++) |
| 557 | { |
| 558 | if (isym->st_shndx > highest_shndx |
| 559 | && isym->st_shndx < SHN_LORESERVE) |
| 560 | highest_shndx = isym->st_shndx; |
| 561 | } |
| 562 | |
| 563 | /* Allocate an array to hold the section index to section symbol index |
| 564 | mapping. Bump by one since we start counting at zero. */ |
| 565 | highest_shndx++; |
| 566 | amt = highest_shndx; |
| 567 | amt *= sizeof (int); |
| 568 | hppa_info->section_syms = (int *) bfd_malloc (amt); |
| 569 | |
| 570 | /* Now walk the local symbols again. If we find a section symbol, |
| 571 | record the index of the symbol into the section_syms array. */ |
| 572 | for (i = 0, isym = local_syms; isym < isymend; i++, isym++) |
| 573 | { |
| 574 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) |
| 575 | hppa_info->section_syms[isym->st_shndx] = i; |
| 576 | } |
| 577 | |
| 578 | /* We are finished with the local symbols. */ |
| 579 | if (local_syms != NULL |
| 580 | && symtab_hdr->contents != (unsigned char *) local_syms) |
| 581 | { |
| 582 | if (! info->keep_memory) |
| 583 | free (local_syms); |
| 584 | else |
| 585 | { |
| 586 | /* Cache the symbols for elf_link_input_bfd. */ |
| 587 | symtab_hdr->contents = (unsigned char *) local_syms; |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | /* Record which BFD we built the section_syms mapping for. */ |
| 592 | hppa_info->section_syms_bfd = abfd; |
| 593 | } |
| 594 | |
| 595 | /* Record the symbol index for this input section. We may need it for |
| 596 | relocations when building shared libraries. When not building shared |
| 597 | libraries this value is never really used, but assign it to zero to |
| 598 | prevent out of bounds memory accesses in other routines. */ |
| 599 | if (info->shared) |
| 600 | { |
| 601 | sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
| 602 | |
| 603 | /* If we did not find a section symbol for this section, then |
| 604 | something went terribly wrong above. */ |
| 605 | if (sec_symndx == SHN_BAD) |
| 606 | return FALSE; |
| 607 | |
| 608 | if (sec_symndx < SHN_LORESERVE) |
| 609 | sec_symndx = hppa_info->section_syms[sec_symndx]; |
| 610 | else |
| 611 | sec_symndx = 0; |
| 612 | } |
| 613 | else |
| 614 | sec_symndx = 0; |
| 615 | |
| 616 | relend = relocs + sec->reloc_count; |
| 617 | for (rel = relocs; rel < relend; ++rel) |
| 618 | { |
| 619 | enum |
| 620 | { |
| 621 | NEED_DLT = 1, |
| 622 | NEED_PLT = 2, |
| 623 | NEED_STUB = 4, |
| 624 | NEED_OPD = 8, |
| 625 | NEED_DYNREL = 16, |
| 626 | }; |
| 627 | |
| 628 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); |
| 629 | struct elf64_hppa_link_hash_entry *hh; |
| 630 | int need_entry; |
| 631 | bfd_boolean maybe_dynamic; |
| 632 | int dynrel_type = R_PARISC_NONE; |
| 633 | static reloc_howto_type *howto; |
| 634 | |
| 635 | if (r_symndx >= symtab_hdr->sh_info) |
| 636 | { |
| 637 | /* We're dealing with a global symbol -- find its hash entry |
| 638 | and mark it as being referenced. */ |
| 639 | long indx = r_symndx - symtab_hdr->sh_info; |
| 640 | hh = hppa_elf_hash_entry (elf_sym_hashes (abfd)[indx]); |
| 641 | while (hh->eh.root.type == bfd_link_hash_indirect |
| 642 | || hh->eh.root.type == bfd_link_hash_warning) |
| 643 | hh = hppa_elf_hash_entry (hh->eh.root.u.i.link); |
| 644 | |
| 645 | /* PR15323, ref flags aren't set for references in the same |
| 646 | object. */ |
| 647 | hh->eh.root.non_ir_ref = 1; |
| 648 | hh->eh.ref_regular = 1; |
| 649 | } |
| 650 | else |
| 651 | hh = NULL; |
| 652 | |
| 653 | /* We can only get preliminary data on whether a symbol is |
| 654 | locally or externally defined, as not all of the input files |
| 655 | have yet been processed. Do something with what we know, as |
| 656 | this may help reduce memory usage and processing time later. */ |
| 657 | maybe_dynamic = FALSE; |
| 658 | if (hh && ((info->shared |
| 659 | && (!info->symbolic |
| 660 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) |
| 661 | || !hh->eh.def_regular |
| 662 | || hh->eh.root.type == bfd_link_hash_defweak)) |
| 663 | maybe_dynamic = TRUE; |
| 664 | |
| 665 | howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info); |
| 666 | need_entry = 0; |
| 667 | switch (howto->type) |
| 668 | { |
| 669 | /* These are simple indirect references to symbols through the |
| 670 | DLT. We need to create a DLT entry for any symbols which |
| 671 | appears in a DLTIND relocation. */ |
| 672 | case R_PARISC_DLTIND21L: |
| 673 | case R_PARISC_DLTIND14R: |
| 674 | case R_PARISC_DLTIND14F: |
| 675 | case R_PARISC_DLTIND14WR: |
| 676 | case R_PARISC_DLTIND14DR: |
| 677 | need_entry = NEED_DLT; |
| 678 | break; |
| 679 | |
| 680 | /* ?!? These need a DLT entry. But I have no idea what to do with |
| 681 | the "link time TP value. */ |
| 682 | case R_PARISC_LTOFF_TP21L: |
| 683 | case R_PARISC_LTOFF_TP14R: |
| 684 | case R_PARISC_LTOFF_TP14F: |
| 685 | case R_PARISC_LTOFF_TP64: |
| 686 | case R_PARISC_LTOFF_TP14WR: |
| 687 | case R_PARISC_LTOFF_TP14DR: |
| 688 | case R_PARISC_LTOFF_TP16F: |
| 689 | case R_PARISC_LTOFF_TP16WF: |
| 690 | case R_PARISC_LTOFF_TP16DF: |
| 691 | need_entry = NEED_DLT; |
| 692 | break; |
| 693 | |
| 694 | /* These are function calls. Depending on their precise target we |
| 695 | may need to make a stub for them. The stub uses the PLT, so we |
| 696 | need to create PLT entries for these symbols too. */ |
| 697 | case R_PARISC_PCREL12F: |
| 698 | case R_PARISC_PCREL17F: |
| 699 | case R_PARISC_PCREL22F: |
| 700 | case R_PARISC_PCREL32: |
| 701 | case R_PARISC_PCREL64: |
| 702 | case R_PARISC_PCREL21L: |
| 703 | case R_PARISC_PCREL17R: |
| 704 | case R_PARISC_PCREL17C: |
| 705 | case R_PARISC_PCREL14R: |
| 706 | case R_PARISC_PCREL14F: |
| 707 | case R_PARISC_PCREL22C: |
| 708 | case R_PARISC_PCREL14WR: |
| 709 | case R_PARISC_PCREL14DR: |
| 710 | case R_PARISC_PCREL16F: |
| 711 | case R_PARISC_PCREL16WF: |
| 712 | case R_PARISC_PCREL16DF: |
| 713 | /* Function calls might need to go through the .plt, and |
| 714 | might need a long branch stub. */ |
| 715 | if (hh != NULL && hh->eh.type != STT_PARISC_MILLI) |
| 716 | need_entry = (NEED_PLT | NEED_STUB); |
| 717 | else |
| 718 | need_entry = 0; |
| 719 | break; |
| 720 | |
| 721 | case R_PARISC_PLTOFF21L: |
| 722 | case R_PARISC_PLTOFF14R: |
| 723 | case R_PARISC_PLTOFF14F: |
| 724 | case R_PARISC_PLTOFF14WR: |
| 725 | case R_PARISC_PLTOFF14DR: |
| 726 | case R_PARISC_PLTOFF16F: |
| 727 | case R_PARISC_PLTOFF16WF: |
| 728 | case R_PARISC_PLTOFF16DF: |
| 729 | need_entry = (NEED_PLT); |
| 730 | break; |
| 731 | |
| 732 | case R_PARISC_DIR64: |
| 733 | if (info->shared || maybe_dynamic) |
| 734 | need_entry = (NEED_DYNREL); |
| 735 | dynrel_type = R_PARISC_DIR64; |
| 736 | break; |
| 737 | |
| 738 | /* This is an indirect reference through the DLT to get the address |
| 739 | of a OPD descriptor. Thus we need to make a DLT entry that points |
| 740 | to an OPD entry. */ |
| 741 | case R_PARISC_LTOFF_FPTR21L: |
| 742 | case R_PARISC_LTOFF_FPTR14R: |
| 743 | case R_PARISC_LTOFF_FPTR14WR: |
| 744 | case R_PARISC_LTOFF_FPTR14DR: |
| 745 | case R_PARISC_LTOFF_FPTR32: |
| 746 | case R_PARISC_LTOFF_FPTR64: |
| 747 | case R_PARISC_LTOFF_FPTR16F: |
| 748 | case R_PARISC_LTOFF_FPTR16WF: |
| 749 | case R_PARISC_LTOFF_FPTR16DF: |
| 750 | if (info->shared || maybe_dynamic) |
| 751 | need_entry = (NEED_DLT | NEED_OPD | NEED_PLT); |
| 752 | else |
| 753 | need_entry = (NEED_DLT | NEED_OPD | NEED_PLT); |
| 754 | dynrel_type = R_PARISC_FPTR64; |
| 755 | break; |
| 756 | |
| 757 | /* This is a simple OPD entry. */ |
| 758 | case R_PARISC_FPTR64: |
| 759 | if (info->shared || maybe_dynamic) |
| 760 | need_entry = (NEED_OPD | NEED_PLT | NEED_DYNREL); |
| 761 | else |
| 762 | need_entry = (NEED_OPD | NEED_PLT); |
| 763 | dynrel_type = R_PARISC_FPTR64; |
| 764 | break; |
| 765 | |
| 766 | /* Add more cases as needed. */ |
| 767 | } |
| 768 | |
| 769 | if (!need_entry) |
| 770 | continue; |
| 771 | |
| 772 | if (hh) |
| 773 | { |
| 774 | /* Stash away enough information to be able to find this symbol |
| 775 | regardless of whether or not it is local or global. */ |
| 776 | hh->owner = abfd; |
| 777 | hh->sym_indx = r_symndx; |
| 778 | } |
| 779 | |
| 780 | /* Create what's needed. */ |
| 781 | if (need_entry & NEED_DLT) |
| 782 | { |
| 783 | /* Allocate space for a DLT entry, as well as a dynamic |
| 784 | relocation for this entry. */ |
| 785 | if (! hppa_info->dlt_sec |
| 786 | && ! get_dlt (abfd, info, hppa_info)) |
| 787 | goto err_out; |
| 788 | |
| 789 | if (hh != NULL) |
| 790 | { |
| 791 | hh->want_dlt = 1; |
| 792 | hh->eh.got.refcount += 1; |
| 793 | } |
| 794 | else |
| 795 | { |
| 796 | bfd_signed_vma *local_dlt_refcounts; |
| 797 | |
| 798 | /* This is a DLT entry for a local symbol. */ |
| 799 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); |
| 800 | if (local_dlt_refcounts == NULL) |
| 801 | return FALSE; |
| 802 | local_dlt_refcounts[r_symndx] += 1; |
| 803 | } |
| 804 | } |
| 805 | |
| 806 | if (need_entry & NEED_PLT) |
| 807 | { |
| 808 | if (! hppa_info->plt_sec |
| 809 | && ! get_plt (abfd, info, hppa_info)) |
| 810 | goto err_out; |
| 811 | |
| 812 | if (hh != NULL) |
| 813 | { |
| 814 | hh->want_plt = 1; |
| 815 | hh->eh.needs_plt = 1; |
| 816 | hh->eh.plt.refcount += 1; |
| 817 | } |
| 818 | else |
| 819 | { |
| 820 | bfd_signed_vma *local_dlt_refcounts; |
| 821 | bfd_signed_vma *local_plt_refcounts; |
| 822 | |
| 823 | /* This is a PLT entry for a local symbol. */ |
| 824 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); |
| 825 | if (local_dlt_refcounts == NULL) |
| 826 | return FALSE; |
| 827 | local_plt_refcounts = local_dlt_refcounts + symtab_hdr->sh_info; |
| 828 | local_plt_refcounts[r_symndx] += 1; |
| 829 | } |
| 830 | } |
| 831 | |
| 832 | if (need_entry & NEED_STUB) |
| 833 | { |
| 834 | if (! hppa_info->stub_sec |
| 835 | && ! get_stub (abfd, info, hppa_info)) |
| 836 | goto err_out; |
| 837 | if (hh) |
| 838 | hh->want_stub = 1; |
| 839 | } |
| 840 | |
| 841 | if (need_entry & NEED_OPD) |
| 842 | { |
| 843 | if (! hppa_info->opd_sec |
| 844 | && ! get_opd (abfd, info, hppa_info)) |
| 845 | goto err_out; |
| 846 | |
| 847 | /* FPTRs are not allocated by the dynamic linker for PA64, |
| 848 | though it is possible that will change in the future. */ |
| 849 | |
| 850 | if (hh != NULL) |
| 851 | hh->want_opd = 1; |
| 852 | else |
| 853 | { |
| 854 | bfd_signed_vma *local_dlt_refcounts; |
| 855 | bfd_signed_vma *local_opd_refcounts; |
| 856 | |
| 857 | /* This is a OPD for a local symbol. */ |
| 858 | local_dlt_refcounts = hppa64_elf_local_refcounts (abfd); |
| 859 | if (local_dlt_refcounts == NULL) |
| 860 | return FALSE; |
| 861 | local_opd_refcounts = (local_dlt_refcounts |
| 862 | + 2 * symtab_hdr->sh_info); |
| 863 | local_opd_refcounts[r_symndx] += 1; |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | /* Add a new dynamic relocation to the chain of dynamic |
| 868 | relocations for this symbol. */ |
| 869 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) |
| 870 | { |
| 871 | if (! hppa_info->other_rel_sec |
| 872 | && ! get_reloc_section (abfd, hppa_info, sec)) |
| 873 | goto err_out; |
| 874 | |
| 875 | /* Count dynamic relocations against global symbols. */ |
| 876 | if (hh != NULL |
| 877 | && !count_dyn_reloc (abfd, hh, dynrel_type, sec, |
| 878 | sec_symndx, rel->r_offset, rel->r_addend)) |
| 879 | goto err_out; |
| 880 | |
| 881 | /* If we are building a shared library and we just recorded |
| 882 | a dynamic R_PARISC_FPTR64 relocation, then make sure the |
| 883 | section symbol for this section ends up in the dynamic |
| 884 | symbol table. */ |
| 885 | if (info->shared && dynrel_type == R_PARISC_FPTR64 |
| 886 | && ! (bfd_elf_link_record_local_dynamic_symbol |
| 887 | (info, abfd, sec_symndx))) |
| 888 | return FALSE; |
| 889 | } |
| 890 | } |
| 891 | |
| 892 | return TRUE; |
| 893 | |
| 894 | err_out: |
| 895 | return FALSE; |
| 896 | } |
| 897 | |
| 898 | struct elf64_hppa_allocate_data |
| 899 | { |
| 900 | struct bfd_link_info *info; |
| 901 | bfd_size_type ofs; |
| 902 | }; |
| 903 | |
| 904 | /* Should we do dynamic things to this symbol? */ |
| 905 | |
| 906 | static bfd_boolean |
| 907 | elf64_hppa_dynamic_symbol_p (struct elf_link_hash_entry *eh, |
| 908 | struct bfd_link_info *info) |
| 909 | { |
| 910 | /* ??? What, if anything, needs to happen wrt STV_PROTECTED symbols |
| 911 | and relocations that retrieve a function descriptor? Assume the |
| 912 | worst for now. */ |
| 913 | if (_bfd_elf_dynamic_symbol_p (eh, info, 1)) |
| 914 | { |
| 915 | /* ??? Why is this here and not elsewhere is_local_label_name. */ |
| 916 | if (eh->root.root.string[0] == '$' && eh->root.root.string[1] == '$') |
| 917 | return FALSE; |
| 918 | |
| 919 | return TRUE; |
| 920 | } |
| 921 | else |
| 922 | return FALSE; |
| 923 | } |
| 924 | |
| 925 | /* Mark all functions exported by this file so that we can later allocate |
| 926 | entries in .opd for them. */ |
| 927 | |
| 928 | static bfd_boolean |
| 929 | elf64_hppa_mark_exported_functions (struct elf_link_hash_entry *eh, void *data) |
| 930 | { |
| 931 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 932 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
| 933 | struct elf64_hppa_link_hash_table *hppa_info; |
| 934 | |
| 935 | hppa_info = hppa_link_hash_table (info); |
| 936 | if (hppa_info == NULL) |
| 937 | return FALSE; |
| 938 | |
| 939 | if (eh |
| 940 | && (eh->root.type == bfd_link_hash_defined |
| 941 | || eh->root.type == bfd_link_hash_defweak) |
| 942 | && eh->root.u.def.section->output_section != NULL |
| 943 | && eh->type == STT_FUNC) |
| 944 | { |
| 945 | if (! hppa_info->opd_sec |
| 946 | && ! get_opd (hppa_info->root.dynobj, info, hppa_info)) |
| 947 | return FALSE; |
| 948 | |
| 949 | hh->want_opd = 1; |
| 950 | |
| 951 | /* Put a flag here for output_symbol_hook. */ |
| 952 | hh->st_shndx = -1; |
| 953 | eh->needs_plt = 1; |
| 954 | } |
| 955 | |
| 956 | return TRUE; |
| 957 | } |
| 958 | |
| 959 | /* Allocate space for a DLT entry. */ |
| 960 | |
| 961 | static bfd_boolean |
| 962 | allocate_global_data_dlt (struct elf_link_hash_entry *eh, void *data) |
| 963 | { |
| 964 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 965 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
| 966 | |
| 967 | if (hh->want_dlt) |
| 968 | { |
| 969 | if (x->info->shared) |
| 970 | { |
| 971 | /* Possibly add the symbol to the local dynamic symbol |
| 972 | table since we might need to create a dynamic relocation |
| 973 | against it. */ |
| 974 | if (eh->dynindx == -1 && eh->type != STT_PARISC_MILLI) |
| 975 | { |
| 976 | bfd *owner = eh->root.u.def.section->owner; |
| 977 | |
| 978 | if (! (bfd_elf_link_record_local_dynamic_symbol |
| 979 | (x->info, owner, hh->sym_indx))) |
| 980 | return FALSE; |
| 981 | } |
| 982 | } |
| 983 | |
| 984 | hh->dlt_offset = x->ofs; |
| 985 | x->ofs += DLT_ENTRY_SIZE; |
| 986 | } |
| 987 | return TRUE; |
| 988 | } |
| 989 | |
| 990 | /* Allocate space for a DLT.PLT entry. */ |
| 991 | |
| 992 | static bfd_boolean |
| 993 | allocate_global_data_plt (struct elf_link_hash_entry *eh, void *data) |
| 994 | { |
| 995 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 996 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *) data; |
| 997 | |
| 998 | if (hh->want_plt |
| 999 | && elf64_hppa_dynamic_symbol_p (eh, x->info) |
| 1000 | && !((eh->root.type == bfd_link_hash_defined |
| 1001 | || eh->root.type == bfd_link_hash_defweak) |
| 1002 | && eh->root.u.def.section->output_section != NULL)) |
| 1003 | { |
| 1004 | hh->plt_offset = x->ofs; |
| 1005 | x->ofs += PLT_ENTRY_SIZE; |
| 1006 | if (hh->plt_offset < 0x2000) |
| 1007 | { |
| 1008 | struct elf64_hppa_link_hash_table *hppa_info; |
| 1009 | |
| 1010 | hppa_info = hppa_link_hash_table (x->info); |
| 1011 | if (hppa_info == NULL) |
| 1012 | return FALSE; |
| 1013 | |
| 1014 | hppa_info->gp_offset = hh->plt_offset; |
| 1015 | } |
| 1016 | } |
| 1017 | else |
| 1018 | hh->want_plt = 0; |
| 1019 | |
| 1020 | return TRUE; |
| 1021 | } |
| 1022 | |
| 1023 | /* Allocate space for a STUB entry. */ |
| 1024 | |
| 1025 | static bfd_boolean |
| 1026 | allocate_global_data_stub (struct elf_link_hash_entry *eh, void *data) |
| 1027 | { |
| 1028 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 1029 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
| 1030 | |
| 1031 | if (hh->want_stub |
| 1032 | && elf64_hppa_dynamic_symbol_p (eh, x->info) |
| 1033 | && !((eh->root.type == bfd_link_hash_defined |
| 1034 | || eh->root.type == bfd_link_hash_defweak) |
| 1035 | && eh->root.u.def.section->output_section != NULL)) |
| 1036 | { |
| 1037 | hh->stub_offset = x->ofs; |
| 1038 | x->ofs += sizeof (plt_stub); |
| 1039 | } |
| 1040 | else |
| 1041 | hh->want_stub = 0; |
| 1042 | return TRUE; |
| 1043 | } |
| 1044 | |
| 1045 | /* Allocate space for a FPTR entry. */ |
| 1046 | |
| 1047 | static bfd_boolean |
| 1048 | allocate_global_data_opd (struct elf_link_hash_entry *eh, void *data) |
| 1049 | { |
| 1050 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 1051 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
| 1052 | |
| 1053 | if (hh && hh->want_opd) |
| 1054 | { |
| 1055 | /* We never need an opd entry for a symbol which is not |
| 1056 | defined by this output file. */ |
| 1057 | if (hh && (hh->eh.root.type == bfd_link_hash_undefined |
| 1058 | || hh->eh.root.type == bfd_link_hash_undefweak |
| 1059 | || hh->eh.root.u.def.section->output_section == NULL)) |
| 1060 | hh->want_opd = 0; |
| 1061 | |
| 1062 | /* If we are creating a shared library, took the address of a local |
| 1063 | function or might export this function from this object file, then |
| 1064 | we have to create an opd descriptor. */ |
| 1065 | else if (x->info->shared |
| 1066 | || hh == NULL |
| 1067 | || (hh->eh.dynindx == -1 && hh->eh.type != STT_PARISC_MILLI) |
| 1068 | || (hh->eh.root.type == bfd_link_hash_defined |
| 1069 | || hh->eh.root.type == bfd_link_hash_defweak)) |
| 1070 | { |
| 1071 | /* If we are creating a shared library, then we will have to |
| 1072 | create a runtime relocation for the symbol to properly |
| 1073 | initialize the .opd entry. Make sure the symbol gets |
| 1074 | added to the dynamic symbol table. */ |
| 1075 | if (x->info->shared |
| 1076 | && (hh == NULL || (hh->eh.dynindx == -1))) |
| 1077 | { |
| 1078 | bfd *owner; |
| 1079 | /* PR 6511: Default to using the dynamic symbol table. */ |
| 1080 | owner = (hh->owner ? hh->owner: eh->root.u.def.section->owner); |
| 1081 | |
| 1082 | if (!bfd_elf_link_record_local_dynamic_symbol |
| 1083 | (x->info, owner, hh->sym_indx)) |
| 1084 | return FALSE; |
| 1085 | } |
| 1086 | |
| 1087 | /* This may not be necessary or desirable anymore now that |
| 1088 | we have some support for dealing with section symbols |
| 1089 | in dynamic relocs. But name munging does make the result |
| 1090 | much easier to debug. ie, the EPLT reloc will reference |
| 1091 | a symbol like .foobar, instead of .text + offset. */ |
| 1092 | if (x->info->shared && eh) |
| 1093 | { |
| 1094 | char *new_name; |
| 1095 | struct elf_link_hash_entry *nh; |
| 1096 | |
| 1097 | new_name = alloca (strlen (eh->root.root.string) + 2); |
| 1098 | new_name[0] = '.'; |
| 1099 | strcpy (new_name + 1, eh->root.root.string); |
| 1100 | |
| 1101 | nh = elf_link_hash_lookup (elf_hash_table (x->info), |
| 1102 | new_name, TRUE, TRUE, TRUE); |
| 1103 | |
| 1104 | nh->root.type = eh->root.type; |
| 1105 | nh->root.u.def.value = eh->root.u.def.value; |
| 1106 | nh->root.u.def.section = eh->root.u.def.section; |
| 1107 | |
| 1108 | if (! bfd_elf_link_record_dynamic_symbol (x->info, nh)) |
| 1109 | return FALSE; |
| 1110 | |
| 1111 | } |
| 1112 | hh->opd_offset = x->ofs; |
| 1113 | x->ofs += OPD_ENTRY_SIZE; |
| 1114 | } |
| 1115 | |
| 1116 | /* Otherwise we do not need an opd entry. */ |
| 1117 | else |
| 1118 | hh->want_opd = 0; |
| 1119 | } |
| 1120 | return TRUE; |
| 1121 | } |
| 1122 | |
| 1123 | /* HP requires the EI_OSABI field to be filled in. The assignment to |
| 1124 | EI_ABIVERSION may not be strictly necessary. */ |
| 1125 | |
| 1126 | static void |
| 1127 | elf64_hppa_post_process_headers (bfd *abfd, |
| 1128 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED) |
| 1129 | { |
| 1130 | Elf_Internal_Ehdr * i_ehdrp; |
| 1131 | |
| 1132 | i_ehdrp = elf_elfheader (abfd); |
| 1133 | |
| 1134 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
| 1135 | i_ehdrp->e_ident[EI_ABIVERSION] = 1; |
| 1136 | } |
| 1137 | |
| 1138 | /* Create function descriptor section (.opd). This section is called .opd |
| 1139 | because it contains "official procedure descriptors". The "official" |
| 1140 | refers to the fact that these descriptors are used when taking the address |
| 1141 | of a procedure, thus ensuring a unique address for each procedure. */ |
| 1142 | |
| 1143 | static bfd_boolean |
| 1144 | get_opd (bfd *abfd, |
| 1145 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 1146 | struct elf64_hppa_link_hash_table *hppa_info) |
| 1147 | { |
| 1148 | asection *opd; |
| 1149 | bfd *dynobj; |
| 1150 | |
| 1151 | opd = hppa_info->opd_sec; |
| 1152 | if (!opd) |
| 1153 | { |
| 1154 | dynobj = hppa_info->root.dynobj; |
| 1155 | if (!dynobj) |
| 1156 | hppa_info->root.dynobj = dynobj = abfd; |
| 1157 | |
| 1158 | opd = bfd_make_section_anyway_with_flags (dynobj, ".opd", |
| 1159 | (SEC_ALLOC |
| 1160 | | SEC_LOAD |
| 1161 | | SEC_HAS_CONTENTS |
| 1162 | | SEC_IN_MEMORY |
| 1163 | | SEC_LINKER_CREATED)); |
| 1164 | if (!opd |
| 1165 | || !bfd_set_section_alignment (abfd, opd, 3)) |
| 1166 | { |
| 1167 | BFD_ASSERT (0); |
| 1168 | return FALSE; |
| 1169 | } |
| 1170 | |
| 1171 | hppa_info->opd_sec = opd; |
| 1172 | } |
| 1173 | |
| 1174 | return TRUE; |
| 1175 | } |
| 1176 | |
| 1177 | /* Create the PLT section. */ |
| 1178 | |
| 1179 | static bfd_boolean |
| 1180 | get_plt (bfd *abfd, |
| 1181 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 1182 | struct elf64_hppa_link_hash_table *hppa_info) |
| 1183 | { |
| 1184 | asection *plt; |
| 1185 | bfd *dynobj; |
| 1186 | |
| 1187 | plt = hppa_info->plt_sec; |
| 1188 | if (!plt) |
| 1189 | { |
| 1190 | dynobj = hppa_info->root.dynobj; |
| 1191 | if (!dynobj) |
| 1192 | hppa_info->root.dynobj = dynobj = abfd; |
| 1193 | |
| 1194 | plt = bfd_make_section_anyway_with_flags (dynobj, ".plt", |
| 1195 | (SEC_ALLOC |
| 1196 | | SEC_LOAD |
| 1197 | | SEC_HAS_CONTENTS |
| 1198 | | SEC_IN_MEMORY |
| 1199 | | SEC_LINKER_CREATED)); |
| 1200 | if (!plt |
| 1201 | || !bfd_set_section_alignment (abfd, plt, 3)) |
| 1202 | { |
| 1203 | BFD_ASSERT (0); |
| 1204 | return FALSE; |
| 1205 | } |
| 1206 | |
| 1207 | hppa_info->plt_sec = plt; |
| 1208 | } |
| 1209 | |
| 1210 | return TRUE; |
| 1211 | } |
| 1212 | |
| 1213 | /* Create the DLT section. */ |
| 1214 | |
| 1215 | static bfd_boolean |
| 1216 | get_dlt (bfd *abfd, |
| 1217 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 1218 | struct elf64_hppa_link_hash_table *hppa_info) |
| 1219 | { |
| 1220 | asection *dlt; |
| 1221 | bfd *dynobj; |
| 1222 | |
| 1223 | dlt = hppa_info->dlt_sec; |
| 1224 | if (!dlt) |
| 1225 | { |
| 1226 | dynobj = hppa_info->root.dynobj; |
| 1227 | if (!dynobj) |
| 1228 | hppa_info->root.dynobj = dynobj = abfd; |
| 1229 | |
| 1230 | dlt = bfd_make_section_anyway_with_flags (dynobj, ".dlt", |
| 1231 | (SEC_ALLOC |
| 1232 | | SEC_LOAD |
| 1233 | | SEC_HAS_CONTENTS |
| 1234 | | SEC_IN_MEMORY |
| 1235 | | SEC_LINKER_CREATED)); |
| 1236 | if (!dlt |
| 1237 | || !bfd_set_section_alignment (abfd, dlt, 3)) |
| 1238 | { |
| 1239 | BFD_ASSERT (0); |
| 1240 | return FALSE; |
| 1241 | } |
| 1242 | |
| 1243 | hppa_info->dlt_sec = dlt; |
| 1244 | } |
| 1245 | |
| 1246 | return TRUE; |
| 1247 | } |
| 1248 | |
| 1249 | /* Create the stubs section. */ |
| 1250 | |
| 1251 | static bfd_boolean |
| 1252 | get_stub (bfd *abfd, |
| 1253 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 1254 | struct elf64_hppa_link_hash_table *hppa_info) |
| 1255 | { |
| 1256 | asection *stub; |
| 1257 | bfd *dynobj; |
| 1258 | |
| 1259 | stub = hppa_info->stub_sec; |
| 1260 | if (!stub) |
| 1261 | { |
| 1262 | dynobj = hppa_info->root.dynobj; |
| 1263 | if (!dynobj) |
| 1264 | hppa_info->root.dynobj = dynobj = abfd; |
| 1265 | |
| 1266 | stub = bfd_make_section_anyway_with_flags (dynobj, ".stub", |
| 1267 | (SEC_ALLOC | SEC_LOAD |
| 1268 | | SEC_HAS_CONTENTS |
| 1269 | | SEC_IN_MEMORY |
| 1270 | | SEC_READONLY |
| 1271 | | SEC_LINKER_CREATED)); |
| 1272 | if (!stub |
| 1273 | || !bfd_set_section_alignment (abfd, stub, 3)) |
| 1274 | { |
| 1275 | BFD_ASSERT (0); |
| 1276 | return FALSE; |
| 1277 | } |
| 1278 | |
| 1279 | hppa_info->stub_sec = stub; |
| 1280 | } |
| 1281 | |
| 1282 | return TRUE; |
| 1283 | } |
| 1284 | |
| 1285 | /* Create sections necessary for dynamic linking. This is only a rough |
| 1286 | cut and will likely change as we learn more about the somewhat |
| 1287 | unusual dynamic linking scheme HP uses. |
| 1288 | |
| 1289 | .stub: |
| 1290 | Contains code to implement cross-space calls. The first time one |
| 1291 | of the stubs is used it will call into the dynamic linker, later |
| 1292 | calls will go straight to the target. |
| 1293 | |
| 1294 | The only stub we support right now looks like |
| 1295 | |
| 1296 | ldd OFFSET(%dp),%r1 |
| 1297 | bve %r0(%r1) |
| 1298 | ldd OFFSET+8(%dp),%dp |
| 1299 | |
| 1300 | Other stubs may be needed in the future. We may want the remove |
| 1301 | the break/nop instruction. It is only used right now to keep the |
| 1302 | offset of a .plt entry and a .stub entry in sync. |
| 1303 | |
| 1304 | .dlt: |
| 1305 | This is what most people call the .got. HP used a different name. |
| 1306 | Losers. |
| 1307 | |
| 1308 | .rela.dlt: |
| 1309 | Relocations for the DLT. |
| 1310 | |
| 1311 | .plt: |
| 1312 | Function pointers as address,gp pairs. |
| 1313 | |
| 1314 | .rela.plt: |
| 1315 | Should contain dynamic IPLT (and EPLT?) relocations. |
| 1316 | |
| 1317 | .opd: |
| 1318 | FPTRS |
| 1319 | |
| 1320 | .rela.opd: |
| 1321 | EPLT relocations for symbols exported from shared libraries. */ |
| 1322 | |
| 1323 | static bfd_boolean |
| 1324 | elf64_hppa_create_dynamic_sections (bfd *abfd, |
| 1325 | struct bfd_link_info *info) |
| 1326 | { |
| 1327 | asection *s; |
| 1328 | struct elf64_hppa_link_hash_table *hppa_info; |
| 1329 | |
| 1330 | hppa_info = hppa_link_hash_table (info); |
| 1331 | if (hppa_info == NULL) |
| 1332 | return FALSE; |
| 1333 | |
| 1334 | if (! get_stub (abfd, info, hppa_info)) |
| 1335 | return FALSE; |
| 1336 | |
| 1337 | if (! get_dlt (abfd, info, hppa_info)) |
| 1338 | return FALSE; |
| 1339 | |
| 1340 | if (! get_plt (abfd, info, hppa_info)) |
| 1341 | return FALSE; |
| 1342 | |
| 1343 | if (! get_opd (abfd, info, hppa_info)) |
| 1344 | return FALSE; |
| 1345 | |
| 1346 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.dlt", |
| 1347 | (SEC_ALLOC | SEC_LOAD |
| 1348 | | SEC_HAS_CONTENTS |
| 1349 | | SEC_IN_MEMORY |
| 1350 | | SEC_READONLY |
| 1351 | | SEC_LINKER_CREATED)); |
| 1352 | if (s == NULL |
| 1353 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1354 | return FALSE; |
| 1355 | hppa_info->dlt_rel_sec = s; |
| 1356 | |
| 1357 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.plt", |
| 1358 | (SEC_ALLOC | SEC_LOAD |
| 1359 | | SEC_HAS_CONTENTS |
| 1360 | | SEC_IN_MEMORY |
| 1361 | | SEC_READONLY |
| 1362 | | SEC_LINKER_CREATED)); |
| 1363 | if (s == NULL |
| 1364 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1365 | return FALSE; |
| 1366 | hppa_info->plt_rel_sec = s; |
| 1367 | |
| 1368 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.data", |
| 1369 | (SEC_ALLOC | SEC_LOAD |
| 1370 | | SEC_HAS_CONTENTS |
| 1371 | | SEC_IN_MEMORY |
| 1372 | | SEC_READONLY |
| 1373 | | SEC_LINKER_CREATED)); |
| 1374 | if (s == NULL |
| 1375 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1376 | return FALSE; |
| 1377 | hppa_info->other_rel_sec = s; |
| 1378 | |
| 1379 | s = bfd_make_section_anyway_with_flags (abfd, ".rela.opd", |
| 1380 | (SEC_ALLOC | SEC_LOAD |
| 1381 | | SEC_HAS_CONTENTS |
| 1382 | | SEC_IN_MEMORY |
| 1383 | | SEC_READONLY |
| 1384 | | SEC_LINKER_CREATED)); |
| 1385 | if (s == NULL |
| 1386 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1387 | return FALSE; |
| 1388 | hppa_info->opd_rel_sec = s; |
| 1389 | |
| 1390 | return TRUE; |
| 1391 | } |
| 1392 | |
| 1393 | /* Allocate dynamic relocations for those symbols that turned out |
| 1394 | to be dynamic. */ |
| 1395 | |
| 1396 | static bfd_boolean |
| 1397 | allocate_dynrel_entries (struct elf_link_hash_entry *eh, void *data) |
| 1398 | { |
| 1399 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 1400 | struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data; |
| 1401 | struct elf64_hppa_link_hash_table *hppa_info; |
| 1402 | struct elf64_hppa_dyn_reloc_entry *rent; |
| 1403 | bfd_boolean dynamic_symbol, shared; |
| 1404 | |
| 1405 | hppa_info = hppa_link_hash_table (x->info); |
| 1406 | if (hppa_info == NULL) |
| 1407 | return FALSE; |
| 1408 | |
| 1409 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (eh, x->info); |
| 1410 | shared = x->info->shared; |
| 1411 | |
| 1412 | /* We may need to allocate relocations for a non-dynamic symbol |
| 1413 | when creating a shared library. */ |
| 1414 | if (!dynamic_symbol && !shared) |
| 1415 | return TRUE; |
| 1416 | |
| 1417 | /* Take care of the normal data relocations. */ |
| 1418 | |
| 1419 | for (rent = hh->reloc_entries; rent; rent = rent->next) |
| 1420 | { |
| 1421 | /* Allocate one iff we are building a shared library, the relocation |
| 1422 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ |
| 1423 | if (!shared && rent->type == R_PARISC_FPTR64 && hh->want_opd) |
| 1424 | continue; |
| 1425 | |
| 1426 | hppa_info->other_rel_sec->size += sizeof (Elf64_External_Rela); |
| 1427 | |
| 1428 | /* Make sure this symbol gets into the dynamic symbol table if it is |
| 1429 | not already recorded. ?!? This should not be in the loop since |
| 1430 | the symbol need only be added once. */ |
| 1431 | if (eh->dynindx == -1 && eh->type != STT_PARISC_MILLI) |
| 1432 | if (!bfd_elf_link_record_local_dynamic_symbol |
| 1433 | (x->info, rent->sec->owner, hh->sym_indx)) |
| 1434 | return FALSE; |
| 1435 | } |
| 1436 | |
| 1437 | /* Take care of the GOT and PLT relocations. */ |
| 1438 | |
| 1439 | if ((dynamic_symbol || shared) && hh->want_dlt) |
| 1440 | hppa_info->dlt_rel_sec->size += sizeof (Elf64_External_Rela); |
| 1441 | |
| 1442 | /* If we are building a shared library, then every symbol that has an |
| 1443 | opd entry will need an EPLT relocation to relocate the symbol's address |
| 1444 | and __gp value based on the runtime load address. */ |
| 1445 | if (shared && hh->want_opd) |
| 1446 | hppa_info->opd_rel_sec->size += sizeof (Elf64_External_Rela); |
| 1447 | |
| 1448 | if (hh->want_plt && dynamic_symbol) |
| 1449 | { |
| 1450 | bfd_size_type t = 0; |
| 1451 | |
| 1452 | /* Dynamic symbols get one IPLT relocation. Local symbols in |
| 1453 | shared libraries get two REL relocations. Local symbols in |
| 1454 | main applications get nothing. */ |
| 1455 | if (dynamic_symbol) |
| 1456 | t = sizeof (Elf64_External_Rela); |
| 1457 | else if (shared) |
| 1458 | t = 2 * sizeof (Elf64_External_Rela); |
| 1459 | |
| 1460 | hppa_info->plt_rel_sec->size += t; |
| 1461 | } |
| 1462 | |
| 1463 | return TRUE; |
| 1464 | } |
| 1465 | |
| 1466 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 1467 | regular object. */ |
| 1468 | |
| 1469 | static bfd_boolean |
| 1470 | elf64_hppa_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 1471 | struct elf_link_hash_entry *eh) |
| 1472 | { |
| 1473 | /* ??? Undefined symbols with PLT entries should be re-defined |
| 1474 | to be the PLT entry. */ |
| 1475 | |
| 1476 | /* If this is a weak symbol, and there is a real definition, the |
| 1477 | processor independent code will have arranged for us to see the |
| 1478 | real definition first, and we can just use the same value. */ |
| 1479 | if (eh->u.weakdef != NULL) |
| 1480 | { |
| 1481 | BFD_ASSERT (eh->u.weakdef->root.type == bfd_link_hash_defined |
| 1482 | || eh->u.weakdef->root.type == bfd_link_hash_defweak); |
| 1483 | eh->root.u.def.section = eh->u.weakdef->root.u.def.section; |
| 1484 | eh->root.u.def.value = eh->u.weakdef->root.u.def.value; |
| 1485 | return TRUE; |
| 1486 | } |
| 1487 | |
| 1488 | /* If this is a reference to a symbol defined by a dynamic object which |
| 1489 | is not a function, we might allocate the symbol in our .dynbss section |
| 1490 | and allocate a COPY dynamic relocation. |
| 1491 | |
| 1492 | But PA64 code is canonically PIC, so as a rule we can avoid this sort |
| 1493 | of hackery. */ |
| 1494 | |
| 1495 | return TRUE; |
| 1496 | } |
| 1497 | |
| 1498 | /* This function is called via elf_link_hash_traverse to mark millicode |
| 1499 | symbols with a dynindx of -1 and to remove the string table reference |
| 1500 | from the dynamic symbol table. If the symbol is not a millicode symbol, |
| 1501 | elf64_hppa_mark_exported_functions is called. */ |
| 1502 | |
| 1503 | static bfd_boolean |
| 1504 | elf64_hppa_mark_milli_and_exported_functions (struct elf_link_hash_entry *eh, |
| 1505 | void *data) |
| 1506 | { |
| 1507 | struct bfd_link_info *info = (struct bfd_link_info *) data; |
| 1508 | |
| 1509 | if (eh->type == STT_PARISC_MILLI) |
| 1510 | { |
| 1511 | if (eh->dynindx != -1) |
| 1512 | { |
| 1513 | eh->dynindx = -1; |
| 1514 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, |
| 1515 | eh->dynstr_index); |
| 1516 | } |
| 1517 | return TRUE; |
| 1518 | } |
| 1519 | |
| 1520 | return elf64_hppa_mark_exported_functions (eh, data); |
| 1521 | } |
| 1522 | |
| 1523 | /* Set the final sizes of the dynamic sections and allocate memory for |
| 1524 | the contents of our special sections. */ |
| 1525 | |
| 1526 | static bfd_boolean |
| 1527 | elf64_hppa_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
| 1528 | { |
| 1529 | struct elf64_hppa_link_hash_table *hppa_info; |
| 1530 | struct elf64_hppa_allocate_data data; |
| 1531 | bfd *dynobj; |
| 1532 | bfd *ibfd; |
| 1533 | asection *sec; |
| 1534 | bfd_boolean plt; |
| 1535 | bfd_boolean relocs; |
| 1536 | bfd_boolean reltext; |
| 1537 | |
| 1538 | hppa_info = hppa_link_hash_table (info); |
| 1539 | if (hppa_info == NULL) |
| 1540 | return FALSE; |
| 1541 | |
| 1542 | dynobj = elf_hash_table (info)->dynobj; |
| 1543 | BFD_ASSERT (dynobj != NULL); |
| 1544 | |
| 1545 | /* Mark each function this program exports so that we will allocate |
| 1546 | space in the .opd section for each function's FPTR. If we are |
| 1547 | creating dynamic sections, change the dynamic index of millicode |
| 1548 | symbols to -1 and remove them from the string table for .dynstr. |
| 1549 | |
| 1550 | We have to traverse the main linker hash table since we have to |
| 1551 | find functions which may not have been mentioned in any relocs. */ |
| 1552 | elf_link_hash_traverse (elf_hash_table (info), |
| 1553 | (elf_hash_table (info)->dynamic_sections_created |
| 1554 | ? elf64_hppa_mark_milli_and_exported_functions |
| 1555 | : elf64_hppa_mark_exported_functions), |
| 1556 | info); |
| 1557 | |
| 1558 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1559 | { |
| 1560 | /* Set the contents of the .interp section to the interpreter. */ |
| 1561 | if (info->executable) |
| 1562 | { |
| 1563 | sec = bfd_get_linker_section (dynobj, ".interp"); |
| 1564 | BFD_ASSERT (sec != NULL); |
| 1565 | sec->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 1566 | sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 1567 | } |
| 1568 | } |
| 1569 | else |
| 1570 | { |
| 1571 | /* We may have created entries in the .rela.got section. |
| 1572 | However, if we are not creating the dynamic sections, we will |
| 1573 | not actually use these entries. Reset the size of .rela.dlt, |
| 1574 | which will cause it to get stripped from the output file |
| 1575 | below. */ |
| 1576 | sec = bfd_get_linker_section (dynobj, ".rela.dlt"); |
| 1577 | if (sec != NULL) |
| 1578 | sec->size = 0; |
| 1579 | } |
| 1580 | |
| 1581 | /* Set up DLT, PLT and OPD offsets for local syms, and space for local |
| 1582 | dynamic relocs. */ |
| 1583 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 1584 | { |
| 1585 | bfd_signed_vma *local_dlt; |
| 1586 | bfd_signed_vma *end_local_dlt; |
| 1587 | bfd_signed_vma *local_plt; |
| 1588 | bfd_signed_vma *end_local_plt; |
| 1589 | bfd_signed_vma *local_opd; |
| 1590 | bfd_signed_vma *end_local_opd; |
| 1591 | bfd_size_type locsymcount; |
| 1592 | Elf_Internal_Shdr *symtab_hdr; |
| 1593 | asection *srel; |
| 1594 | |
| 1595 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
| 1596 | continue; |
| 1597 | |
| 1598 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 1599 | { |
| 1600 | struct elf64_hppa_dyn_reloc_entry *hdh_p; |
| 1601 | |
| 1602 | for (hdh_p = ((struct elf64_hppa_dyn_reloc_entry *) |
| 1603 | elf_section_data (sec)->local_dynrel); |
| 1604 | hdh_p != NULL; |
| 1605 | hdh_p = hdh_p->next) |
| 1606 | { |
| 1607 | if (!bfd_is_abs_section (hdh_p->sec) |
| 1608 | && bfd_is_abs_section (hdh_p->sec->output_section)) |
| 1609 | { |
| 1610 | /* Input section has been discarded, either because |
| 1611 | it is a copy of a linkonce section or due to |
| 1612 | linker script /DISCARD/, so we'll be discarding |
| 1613 | the relocs too. */ |
| 1614 | } |
| 1615 | else if (hdh_p->count != 0) |
| 1616 | { |
| 1617 | srel = elf_section_data (hdh_p->sec)->sreloc; |
| 1618 | srel->size += hdh_p->count * sizeof (Elf64_External_Rela); |
| 1619 | if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0) |
| 1620 | info->flags |= DF_TEXTREL; |
| 1621 | } |
| 1622 | } |
| 1623 | } |
| 1624 | |
| 1625 | local_dlt = elf_local_got_refcounts (ibfd); |
| 1626 | if (!local_dlt) |
| 1627 | continue; |
| 1628 | |
| 1629 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
| 1630 | locsymcount = symtab_hdr->sh_info; |
| 1631 | end_local_dlt = local_dlt + locsymcount; |
| 1632 | sec = hppa_info->dlt_sec; |
| 1633 | srel = hppa_info->dlt_rel_sec; |
| 1634 | for (; local_dlt < end_local_dlt; ++local_dlt) |
| 1635 | { |
| 1636 | if (*local_dlt > 0) |
| 1637 | { |
| 1638 | *local_dlt = sec->size; |
| 1639 | sec->size += DLT_ENTRY_SIZE; |
| 1640 | if (info->shared) |
| 1641 | { |
| 1642 | srel->size += sizeof (Elf64_External_Rela); |
| 1643 | } |
| 1644 | } |
| 1645 | else |
| 1646 | *local_dlt = (bfd_vma) -1; |
| 1647 | } |
| 1648 | |
| 1649 | local_plt = end_local_dlt; |
| 1650 | end_local_plt = local_plt + locsymcount; |
| 1651 | if (! hppa_info->root.dynamic_sections_created) |
| 1652 | { |
| 1653 | /* Won't be used, but be safe. */ |
| 1654 | for (; local_plt < end_local_plt; ++local_plt) |
| 1655 | *local_plt = (bfd_vma) -1; |
| 1656 | } |
| 1657 | else |
| 1658 | { |
| 1659 | sec = hppa_info->plt_sec; |
| 1660 | srel = hppa_info->plt_rel_sec; |
| 1661 | for (; local_plt < end_local_plt; ++local_plt) |
| 1662 | { |
| 1663 | if (*local_plt > 0) |
| 1664 | { |
| 1665 | *local_plt = sec->size; |
| 1666 | sec->size += PLT_ENTRY_SIZE; |
| 1667 | if (info->shared) |
| 1668 | srel->size += sizeof (Elf64_External_Rela); |
| 1669 | } |
| 1670 | else |
| 1671 | *local_plt = (bfd_vma) -1; |
| 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | local_opd = end_local_plt; |
| 1676 | end_local_opd = local_opd + locsymcount; |
| 1677 | if (! hppa_info->root.dynamic_sections_created) |
| 1678 | { |
| 1679 | /* Won't be used, but be safe. */ |
| 1680 | for (; local_opd < end_local_opd; ++local_opd) |
| 1681 | *local_opd = (bfd_vma) -1; |
| 1682 | } |
| 1683 | else |
| 1684 | { |
| 1685 | sec = hppa_info->opd_sec; |
| 1686 | srel = hppa_info->opd_rel_sec; |
| 1687 | for (; local_opd < end_local_opd; ++local_opd) |
| 1688 | { |
| 1689 | if (*local_opd > 0) |
| 1690 | { |
| 1691 | *local_opd = sec->size; |
| 1692 | sec->size += OPD_ENTRY_SIZE; |
| 1693 | if (info->shared) |
| 1694 | srel->size += sizeof (Elf64_External_Rela); |
| 1695 | } |
| 1696 | else |
| 1697 | *local_opd = (bfd_vma) -1; |
| 1698 | } |
| 1699 | } |
| 1700 | } |
| 1701 | |
| 1702 | /* Allocate the GOT entries. */ |
| 1703 | |
| 1704 | data.info = info; |
| 1705 | if (hppa_info->dlt_sec) |
| 1706 | { |
| 1707 | data.ofs = hppa_info->dlt_sec->size; |
| 1708 | elf_link_hash_traverse (elf_hash_table (info), |
| 1709 | allocate_global_data_dlt, &data); |
| 1710 | hppa_info->dlt_sec->size = data.ofs; |
| 1711 | } |
| 1712 | |
| 1713 | if (hppa_info->plt_sec) |
| 1714 | { |
| 1715 | data.ofs = hppa_info->plt_sec->size; |
| 1716 | elf_link_hash_traverse (elf_hash_table (info), |
| 1717 | allocate_global_data_plt, &data); |
| 1718 | hppa_info->plt_sec->size = data.ofs; |
| 1719 | } |
| 1720 | |
| 1721 | if (hppa_info->stub_sec) |
| 1722 | { |
| 1723 | data.ofs = 0x0; |
| 1724 | elf_link_hash_traverse (elf_hash_table (info), |
| 1725 | allocate_global_data_stub, &data); |
| 1726 | hppa_info->stub_sec->size = data.ofs; |
| 1727 | } |
| 1728 | |
| 1729 | /* Allocate space for entries in the .opd section. */ |
| 1730 | if (hppa_info->opd_sec) |
| 1731 | { |
| 1732 | data.ofs = hppa_info->opd_sec->size; |
| 1733 | elf_link_hash_traverse (elf_hash_table (info), |
| 1734 | allocate_global_data_opd, &data); |
| 1735 | hppa_info->opd_sec->size = data.ofs; |
| 1736 | } |
| 1737 | |
| 1738 | /* Now allocate space for dynamic relocations, if necessary. */ |
| 1739 | if (hppa_info->root.dynamic_sections_created) |
| 1740 | elf_link_hash_traverse (elf_hash_table (info), |
| 1741 | allocate_dynrel_entries, &data); |
| 1742 | |
| 1743 | /* The sizes of all the sections are set. Allocate memory for them. */ |
| 1744 | plt = FALSE; |
| 1745 | relocs = FALSE; |
| 1746 | reltext = FALSE; |
| 1747 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) |
| 1748 | { |
| 1749 | const char *name; |
| 1750 | |
| 1751 | if ((sec->flags & SEC_LINKER_CREATED) == 0) |
| 1752 | continue; |
| 1753 | |
| 1754 | /* It's OK to base decisions on the section name, because none |
| 1755 | of the dynobj section names depend upon the input files. */ |
| 1756 | name = bfd_get_section_name (dynobj, sec); |
| 1757 | |
| 1758 | if (strcmp (name, ".plt") == 0) |
| 1759 | { |
| 1760 | /* Remember whether there is a PLT. */ |
| 1761 | plt = sec->size != 0; |
| 1762 | } |
| 1763 | else if (strcmp (name, ".opd") == 0 |
| 1764 | || CONST_STRNEQ (name, ".dlt") |
| 1765 | || strcmp (name, ".stub") == 0 |
| 1766 | || strcmp (name, ".got") == 0) |
| 1767 | { |
| 1768 | /* Strip this section if we don't need it; see the comment below. */ |
| 1769 | } |
| 1770 | else if (CONST_STRNEQ (name, ".rela")) |
| 1771 | { |
| 1772 | if (sec->size != 0) |
| 1773 | { |
| 1774 | asection *target; |
| 1775 | |
| 1776 | /* Remember whether there are any reloc sections other |
| 1777 | than .rela.plt. */ |
| 1778 | if (strcmp (name, ".rela.plt") != 0) |
| 1779 | { |
| 1780 | const char *outname; |
| 1781 | |
| 1782 | relocs = TRUE; |
| 1783 | |
| 1784 | /* If this relocation section applies to a read only |
| 1785 | section, then we probably need a DT_TEXTREL |
| 1786 | entry. The entries in the .rela.plt section |
| 1787 | really apply to the .got section, which we |
| 1788 | created ourselves and so know is not readonly. */ |
| 1789 | outname = bfd_get_section_name (output_bfd, |
| 1790 | sec->output_section); |
| 1791 | target = bfd_get_section_by_name (output_bfd, outname + 4); |
| 1792 | if (target != NULL |
| 1793 | && (target->flags & SEC_READONLY) != 0 |
| 1794 | && (target->flags & SEC_ALLOC) != 0) |
| 1795 | reltext = TRUE; |
| 1796 | } |
| 1797 | |
| 1798 | /* We use the reloc_count field as a counter if we need |
| 1799 | to copy relocs into the output file. */ |
| 1800 | sec->reloc_count = 0; |
| 1801 | } |
| 1802 | } |
| 1803 | else |
| 1804 | { |
| 1805 | /* It's not one of our sections, so don't allocate space. */ |
| 1806 | continue; |
| 1807 | } |
| 1808 | |
| 1809 | if (sec->size == 0) |
| 1810 | { |
| 1811 | /* If we don't need this section, strip it from the |
| 1812 | output file. This is mostly to handle .rela.bss and |
| 1813 | .rela.plt. We must create both sections in |
| 1814 | create_dynamic_sections, because they must be created |
| 1815 | before the linker maps input sections to output |
| 1816 | sections. The linker does that before |
| 1817 | adjust_dynamic_symbol is called, and it is that |
| 1818 | function which decides whether anything needs to go |
| 1819 | into these sections. */ |
| 1820 | sec->flags |= SEC_EXCLUDE; |
| 1821 | continue; |
| 1822 | } |
| 1823 | |
| 1824 | if ((sec->flags & SEC_HAS_CONTENTS) == 0) |
| 1825 | continue; |
| 1826 | |
| 1827 | /* Allocate memory for the section contents if it has not |
| 1828 | been allocated already. We use bfd_zalloc here in case |
| 1829 | unused entries are not reclaimed before the section's |
| 1830 | contents are written out. This should not happen, but this |
| 1831 | way if it does, we get a R_PARISC_NONE reloc instead of |
| 1832 | garbage. */ |
| 1833 | if (sec->contents == NULL) |
| 1834 | { |
| 1835 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); |
| 1836 | if (sec->contents == NULL) |
| 1837 | return FALSE; |
| 1838 | } |
| 1839 | } |
| 1840 | |
| 1841 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1842 | { |
| 1843 | /* Always create a DT_PLTGOT. It actually has nothing to do with |
| 1844 | the PLT, it is how we communicate the __gp value of a load |
| 1845 | module to the dynamic linker. */ |
| 1846 | #define add_dynamic_entry(TAG, VAL) \ |
| 1847 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 1848 | |
| 1849 | if (!add_dynamic_entry (DT_HP_DLD_FLAGS, 0) |
| 1850 | || !add_dynamic_entry (DT_PLTGOT, 0)) |
| 1851 | return FALSE; |
| 1852 | |
| 1853 | /* Add some entries to the .dynamic section. We fill in the |
| 1854 | values later, in elf64_hppa_finish_dynamic_sections, but we |
| 1855 | must add the entries now so that we get the correct size for |
| 1856 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 1857 | dynamic linker and used by the debugger. */ |
| 1858 | if (! info->shared) |
| 1859 | { |
| 1860 | if (!add_dynamic_entry (DT_DEBUG, 0) |
| 1861 | || !add_dynamic_entry (DT_HP_DLD_HOOK, 0) |
| 1862 | || !add_dynamic_entry (DT_HP_LOAD_MAP, 0)) |
| 1863 | return FALSE; |
| 1864 | } |
| 1865 | |
| 1866 | /* Force DT_FLAGS to always be set. |
| 1867 | Required by HPUX 11.00 patch PHSS_26559. */ |
| 1868 | if (!add_dynamic_entry (DT_FLAGS, (info)->flags)) |
| 1869 | return FALSE; |
| 1870 | |
| 1871 | if (plt) |
| 1872 | { |
| 1873 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
| 1874 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 1875 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 1876 | return FALSE; |
| 1877 | } |
| 1878 | |
| 1879 | if (relocs) |
| 1880 | { |
| 1881 | if (!add_dynamic_entry (DT_RELA, 0) |
| 1882 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 1883 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) |
| 1884 | return FALSE; |
| 1885 | } |
| 1886 | |
| 1887 | if (reltext) |
| 1888 | { |
| 1889 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 1890 | return FALSE; |
| 1891 | info->flags |= DF_TEXTREL; |
| 1892 | } |
| 1893 | } |
| 1894 | #undef add_dynamic_entry |
| 1895 | |
| 1896 | return TRUE; |
| 1897 | } |
| 1898 | |
| 1899 | /* Called after we have output the symbol into the dynamic symbol |
| 1900 | table, but before we output the symbol into the normal symbol |
| 1901 | table. |
| 1902 | |
| 1903 | For some symbols we had to change their address when outputting |
| 1904 | the dynamic symbol table. We undo that change here so that |
| 1905 | the symbols have their expected value in the normal symbol |
| 1906 | table. Ick. */ |
| 1907 | |
| 1908 | static int |
| 1909 | elf64_hppa_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 1910 | const char *name, |
| 1911 | Elf_Internal_Sym *sym, |
| 1912 | asection *input_sec ATTRIBUTE_UNUSED, |
| 1913 | struct elf_link_hash_entry *eh) |
| 1914 | { |
| 1915 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 1916 | |
| 1917 | /* We may be called with the file symbol or section symbols. |
| 1918 | They never need munging, so it is safe to ignore them. */ |
| 1919 | if (!name || !eh) |
| 1920 | return 1; |
| 1921 | |
| 1922 | /* Function symbols for which we created .opd entries *may* have been |
| 1923 | munged by finish_dynamic_symbol and have to be un-munged here. |
| 1924 | |
| 1925 | Note that finish_dynamic_symbol sometimes turns dynamic symbols |
| 1926 | into non-dynamic ones, so we initialize st_shndx to -1 in |
| 1927 | mark_exported_functions and check to see if it was overwritten |
| 1928 | here instead of just checking eh->dynindx. */ |
| 1929 | if (hh->want_opd && hh->st_shndx != -1) |
| 1930 | { |
| 1931 | /* Restore the saved value and section index. */ |
| 1932 | sym->st_value = hh->st_value; |
| 1933 | sym->st_shndx = hh->st_shndx; |
| 1934 | } |
| 1935 | |
| 1936 | return 1; |
| 1937 | } |
| 1938 | |
| 1939 | /* Finish up dynamic symbol handling. We set the contents of various |
| 1940 | dynamic sections here. */ |
| 1941 | |
| 1942 | static bfd_boolean |
| 1943 | elf64_hppa_finish_dynamic_symbol (bfd *output_bfd, |
| 1944 | struct bfd_link_info *info, |
| 1945 | struct elf_link_hash_entry *eh, |
| 1946 | Elf_Internal_Sym *sym) |
| 1947 | { |
| 1948 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 1949 | asection *stub, *splt, *sopd, *spltrel; |
| 1950 | struct elf64_hppa_link_hash_table *hppa_info; |
| 1951 | |
| 1952 | hppa_info = hppa_link_hash_table (info); |
| 1953 | if (hppa_info == NULL) |
| 1954 | return FALSE; |
| 1955 | |
| 1956 | stub = hppa_info->stub_sec; |
| 1957 | splt = hppa_info->plt_sec; |
| 1958 | sopd = hppa_info->opd_sec; |
| 1959 | spltrel = hppa_info->plt_rel_sec; |
| 1960 | |
| 1961 | /* Incredible. It is actually necessary to NOT use the symbol's real |
| 1962 | value when building the dynamic symbol table for a shared library. |
| 1963 | At least for symbols that refer to functions. |
| 1964 | |
| 1965 | We will store a new value and section index into the symbol long |
| 1966 | enough to output it into the dynamic symbol table, then we restore |
| 1967 | the original values (in elf64_hppa_link_output_symbol_hook). */ |
| 1968 | if (hh->want_opd) |
| 1969 | { |
| 1970 | BFD_ASSERT (sopd != NULL); |
| 1971 | |
| 1972 | /* Save away the original value and section index so that we |
| 1973 | can restore them later. */ |
| 1974 | hh->st_value = sym->st_value; |
| 1975 | hh->st_shndx = sym->st_shndx; |
| 1976 | |
| 1977 | /* For the dynamic symbol table entry, we want the value to be |
| 1978 | address of this symbol's entry within the .opd section. */ |
| 1979 | sym->st_value = (hh->opd_offset |
| 1980 | + sopd->output_offset |
| 1981 | + sopd->output_section->vma); |
| 1982 | sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, |
| 1983 | sopd->output_section); |
| 1984 | } |
| 1985 | |
| 1986 | /* Initialize a .plt entry if requested. */ |
| 1987 | if (hh->want_plt |
| 1988 | && elf64_hppa_dynamic_symbol_p (eh, info)) |
| 1989 | { |
| 1990 | bfd_vma value; |
| 1991 | Elf_Internal_Rela rel; |
| 1992 | bfd_byte *loc; |
| 1993 | |
| 1994 | BFD_ASSERT (splt != NULL && spltrel != NULL); |
| 1995 | |
| 1996 | /* We do not actually care about the value in the PLT entry |
| 1997 | if we are creating a shared library and the symbol is |
| 1998 | still undefined, we create a dynamic relocation to fill |
| 1999 | in the correct value. */ |
| 2000 | if (info->shared && eh->root.type == bfd_link_hash_undefined) |
| 2001 | value = 0; |
| 2002 | else |
| 2003 | value = (eh->root.u.def.value + eh->root.u.def.section->vma); |
| 2004 | |
| 2005 | /* Fill in the entry in the procedure linkage table. |
| 2006 | |
| 2007 | The format of a plt entry is |
| 2008 | <funcaddr> <__gp>. |
| 2009 | |
| 2010 | plt_offset is the offset within the PLT section at which to |
| 2011 | install the PLT entry. |
| 2012 | |
| 2013 | We are modifying the in-memory PLT contents here, so we do not add |
| 2014 | in the output_offset of the PLT section. */ |
| 2015 | |
| 2016 | bfd_put_64 (splt->owner, value, splt->contents + hh->plt_offset); |
| 2017 | value = _bfd_get_gp_value (splt->output_section->owner); |
| 2018 | bfd_put_64 (splt->owner, value, splt->contents + hh->plt_offset + 0x8); |
| 2019 | |
| 2020 | /* Create a dynamic IPLT relocation for this entry. |
| 2021 | |
| 2022 | We are creating a relocation in the output file's PLT section, |
| 2023 | which is included within the DLT secton. So we do need to include |
| 2024 | the PLT's output_offset in the computation of the relocation's |
| 2025 | address. */ |
| 2026 | rel.r_offset = (hh->plt_offset + splt->output_offset |
| 2027 | + splt->output_section->vma); |
| 2028 | rel.r_info = ELF64_R_INFO (hh->eh.dynindx, R_PARISC_IPLT); |
| 2029 | rel.r_addend = 0; |
| 2030 | |
| 2031 | loc = spltrel->contents; |
| 2032 | loc += spltrel->reloc_count++ * sizeof (Elf64_External_Rela); |
| 2033 | bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel, loc); |
| 2034 | } |
| 2035 | |
| 2036 | /* Initialize an external call stub entry if requested. */ |
| 2037 | if (hh->want_stub |
| 2038 | && elf64_hppa_dynamic_symbol_p (eh, info)) |
| 2039 | { |
| 2040 | bfd_vma value; |
| 2041 | int insn; |
| 2042 | unsigned int max_offset; |
| 2043 | |
| 2044 | BFD_ASSERT (stub != NULL); |
| 2045 | |
| 2046 | /* Install the generic stub template. |
| 2047 | |
| 2048 | We are modifying the contents of the stub section, so we do not |
| 2049 | need to include the stub section's output_offset here. */ |
| 2050 | memcpy (stub->contents + hh->stub_offset, plt_stub, sizeof (plt_stub)); |
| 2051 | |
| 2052 | /* Fix up the first ldd instruction. |
| 2053 | |
| 2054 | We are modifying the contents of the STUB section in memory, |
| 2055 | so we do not need to include its output offset in this computation. |
| 2056 | |
| 2057 | Note the plt_offset value is the value of the PLT entry relative to |
| 2058 | the start of the PLT section. These instructions will reference |
| 2059 | data relative to the value of __gp, which may not necessarily have |
| 2060 | the same address as the start of the PLT section. |
| 2061 | |
| 2062 | gp_offset contains the offset of __gp within the PLT section. */ |
| 2063 | value = hh->plt_offset - hppa_info->gp_offset; |
| 2064 | |
| 2065 | insn = bfd_get_32 (stub->owner, stub->contents + hh->stub_offset); |
| 2066 | if (output_bfd->arch_info->mach >= 25) |
| 2067 | { |
| 2068 | /* Wide mode allows 16 bit offsets. */ |
| 2069 | max_offset = 32768; |
| 2070 | insn &= ~ 0xfff1; |
| 2071 | insn |= re_assemble_16 ((int) value); |
| 2072 | } |
| 2073 | else |
| 2074 | { |
| 2075 | max_offset = 8192; |
| 2076 | insn &= ~ 0x3ff1; |
| 2077 | insn |= re_assemble_14 ((int) value); |
| 2078 | } |
| 2079 | |
| 2080 | if ((value & 7) || value + max_offset >= 2*max_offset - 8) |
| 2081 | { |
| 2082 | (*_bfd_error_handler) (_("stub entry for %s cannot load .plt, dp offset = %ld"), |
| 2083 | hh->eh.root.root.string, |
| 2084 | (long) value); |
| 2085 | return FALSE; |
| 2086 | } |
| 2087 | |
| 2088 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
| 2089 | stub->contents + hh->stub_offset); |
| 2090 | |
| 2091 | /* Fix up the second ldd instruction. */ |
| 2092 | value += 8; |
| 2093 | insn = bfd_get_32 (stub->owner, stub->contents + hh->stub_offset + 8); |
| 2094 | if (output_bfd->arch_info->mach >= 25) |
| 2095 | { |
| 2096 | insn &= ~ 0xfff1; |
| 2097 | insn |= re_assemble_16 ((int) value); |
| 2098 | } |
| 2099 | else |
| 2100 | { |
| 2101 | insn &= ~ 0x3ff1; |
| 2102 | insn |= re_assemble_14 ((int) value); |
| 2103 | } |
| 2104 | bfd_put_32 (stub->owner, (bfd_vma) insn, |
| 2105 | stub->contents + hh->stub_offset + 8); |
| 2106 | } |
| 2107 | |
| 2108 | return TRUE; |
| 2109 | } |
| 2110 | |
| 2111 | /* The .opd section contains FPTRs for each function this file |
| 2112 | exports. Initialize the FPTR entries. */ |
| 2113 | |
| 2114 | static bfd_boolean |
| 2115 | elf64_hppa_finalize_opd (struct elf_link_hash_entry *eh, void *data) |
| 2116 | { |
| 2117 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 2118 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
| 2119 | struct elf64_hppa_link_hash_table *hppa_info; |
| 2120 | asection *sopd; |
| 2121 | asection *sopdrel; |
| 2122 | |
| 2123 | hppa_info = hppa_link_hash_table (info); |
| 2124 | if (hppa_info == NULL) |
| 2125 | return FALSE; |
| 2126 | |
| 2127 | sopd = hppa_info->opd_sec; |
| 2128 | sopdrel = hppa_info->opd_rel_sec; |
| 2129 | |
| 2130 | if (hh->want_opd) |
| 2131 | { |
| 2132 | bfd_vma value; |
| 2133 | |
| 2134 | /* The first two words of an .opd entry are zero. |
| 2135 | |
| 2136 | We are modifying the contents of the OPD section in memory, so we |
| 2137 | do not need to include its output offset in this computation. */ |
| 2138 | memset (sopd->contents + hh->opd_offset, 0, 16); |
| 2139 | |
| 2140 | value = (eh->root.u.def.value |
| 2141 | + eh->root.u.def.section->output_section->vma |
| 2142 | + eh->root.u.def.section->output_offset); |
| 2143 | |
| 2144 | /* The next word is the address of the function. */ |
| 2145 | bfd_put_64 (sopd->owner, value, sopd->contents + hh->opd_offset + 16); |
| 2146 | |
| 2147 | /* The last word is our local __gp value. */ |
| 2148 | value = _bfd_get_gp_value (sopd->output_section->owner); |
| 2149 | bfd_put_64 (sopd->owner, value, sopd->contents + hh->opd_offset + 24); |
| 2150 | } |
| 2151 | |
| 2152 | /* If we are generating a shared library, we must generate EPLT relocations |
| 2153 | for each entry in the .opd, even for static functions (they may have |
| 2154 | had their address taken). */ |
| 2155 | if (info->shared && hh->want_opd) |
| 2156 | { |
| 2157 | Elf_Internal_Rela rel; |
| 2158 | bfd_byte *loc; |
| 2159 | int dynindx; |
| 2160 | |
| 2161 | /* We may need to do a relocation against a local symbol, in |
| 2162 | which case we have to look up it's dynamic symbol index off |
| 2163 | the local symbol hash table. */ |
| 2164 | if (eh->dynindx != -1) |
| 2165 | dynindx = eh->dynindx; |
| 2166 | else |
| 2167 | dynindx |
| 2168 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
| 2169 | hh->sym_indx); |
| 2170 | |
| 2171 | /* The offset of this relocation is the absolute address of the |
| 2172 | .opd entry for this symbol. */ |
| 2173 | rel.r_offset = (hh->opd_offset + sopd->output_offset |
| 2174 | + sopd->output_section->vma); |
| 2175 | |
| 2176 | /* If H is non-null, then we have an external symbol. |
| 2177 | |
| 2178 | It is imperative that we use a different dynamic symbol for the |
| 2179 | EPLT relocation if the symbol has global scope. |
| 2180 | |
| 2181 | In the dynamic symbol table, the function symbol will have a value |
| 2182 | which is address of the function's .opd entry. |
| 2183 | |
| 2184 | Thus, we can not use that dynamic symbol for the EPLT relocation |
| 2185 | (if we did, the data in the .opd would reference itself rather |
| 2186 | than the actual address of the function). Instead we have to use |
| 2187 | a new dynamic symbol which has the same value as the original global |
| 2188 | function symbol. |
| 2189 | |
| 2190 | We prefix the original symbol with a "." and use the new symbol in |
| 2191 | the EPLT relocation. This new symbol has already been recorded in |
| 2192 | the symbol table, we just have to look it up and use it. |
| 2193 | |
| 2194 | We do not have such problems with static functions because we do |
| 2195 | not make their addresses in the dynamic symbol table point to |
| 2196 | the .opd entry. Ultimately this should be safe since a static |
| 2197 | function can not be directly referenced outside of its shared |
| 2198 | library. |
| 2199 | |
| 2200 | We do have to play similar games for FPTR relocations in shared |
| 2201 | libraries, including those for static symbols. See the FPTR |
| 2202 | handling in elf64_hppa_finalize_dynreloc. */ |
| 2203 | if (eh) |
| 2204 | { |
| 2205 | char *new_name; |
| 2206 | struct elf_link_hash_entry *nh; |
| 2207 | |
| 2208 | new_name = alloca (strlen (eh->root.root.string) + 2); |
| 2209 | new_name[0] = '.'; |
| 2210 | strcpy (new_name + 1, eh->root.root.string); |
| 2211 | |
| 2212 | nh = elf_link_hash_lookup (elf_hash_table (info), |
| 2213 | new_name, TRUE, TRUE, FALSE); |
| 2214 | |
| 2215 | /* All we really want from the new symbol is its dynamic |
| 2216 | symbol index. */ |
| 2217 | if (nh) |
| 2218 | dynindx = nh->dynindx; |
| 2219 | } |
| 2220 | |
| 2221 | rel.r_addend = 0; |
| 2222 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT); |
| 2223 | |
| 2224 | loc = sopdrel->contents; |
| 2225 | loc += sopdrel->reloc_count++ * sizeof (Elf64_External_Rela); |
| 2226 | bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel, loc); |
| 2227 | } |
| 2228 | return TRUE; |
| 2229 | } |
| 2230 | |
| 2231 | /* The .dlt section contains addresses for items referenced through the |
| 2232 | dlt. Note that we can have a DLTIND relocation for a local symbol, thus |
| 2233 | we can not depend on finish_dynamic_symbol to initialize the .dlt. */ |
| 2234 | |
| 2235 | static bfd_boolean |
| 2236 | elf64_hppa_finalize_dlt (struct elf_link_hash_entry *eh, void *data) |
| 2237 | { |
| 2238 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 2239 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
| 2240 | struct elf64_hppa_link_hash_table *hppa_info; |
| 2241 | asection *sdlt, *sdltrel; |
| 2242 | |
| 2243 | hppa_info = hppa_link_hash_table (info); |
| 2244 | if (hppa_info == NULL) |
| 2245 | return FALSE; |
| 2246 | |
| 2247 | sdlt = hppa_info->dlt_sec; |
| 2248 | sdltrel = hppa_info->dlt_rel_sec; |
| 2249 | |
| 2250 | /* H/DYN_H may refer to a local variable and we know it's |
| 2251 | address, so there is no need to create a relocation. Just install |
| 2252 | the proper value into the DLT, note this shortcut can not be |
| 2253 | skipped when building a shared library. */ |
| 2254 | if (! info->shared && hh && hh->want_dlt) |
| 2255 | { |
| 2256 | bfd_vma value; |
| 2257 | |
| 2258 | /* If we had an LTOFF_FPTR style relocation we want the DLT entry |
| 2259 | to point to the FPTR entry in the .opd section. |
| 2260 | |
| 2261 | We include the OPD's output offset in this computation as |
| 2262 | we are referring to an absolute address in the resulting |
| 2263 | object file. */ |
| 2264 | if (hh->want_opd) |
| 2265 | { |
| 2266 | value = (hh->opd_offset |
| 2267 | + hppa_info->opd_sec->output_offset |
| 2268 | + hppa_info->opd_sec->output_section->vma); |
| 2269 | } |
| 2270 | else if ((eh->root.type == bfd_link_hash_defined |
| 2271 | || eh->root.type == bfd_link_hash_defweak) |
| 2272 | && eh->root.u.def.section) |
| 2273 | { |
| 2274 | value = eh->root.u.def.value + eh->root.u.def.section->output_offset; |
| 2275 | if (eh->root.u.def.section->output_section) |
| 2276 | value += eh->root.u.def.section->output_section->vma; |
| 2277 | else |
| 2278 | value += eh->root.u.def.section->vma; |
| 2279 | } |
| 2280 | else |
| 2281 | /* We have an undefined function reference. */ |
| 2282 | value = 0; |
| 2283 | |
| 2284 | /* We do not need to include the output offset of the DLT section |
| 2285 | here because we are modifying the in-memory contents. */ |
| 2286 | bfd_put_64 (sdlt->owner, value, sdlt->contents + hh->dlt_offset); |
| 2287 | } |
| 2288 | |
| 2289 | /* Create a relocation for the DLT entry associated with this symbol. |
| 2290 | When building a shared library the symbol does not have to be dynamic. */ |
| 2291 | if (hh->want_dlt |
| 2292 | && (elf64_hppa_dynamic_symbol_p (eh, info) || info->shared)) |
| 2293 | { |
| 2294 | Elf_Internal_Rela rel; |
| 2295 | bfd_byte *loc; |
| 2296 | int dynindx; |
| 2297 | |
| 2298 | /* We may need to do a relocation against a local symbol, in |
| 2299 | which case we have to look up it's dynamic symbol index off |
| 2300 | the local symbol hash table. */ |
| 2301 | if (eh && eh->dynindx != -1) |
| 2302 | dynindx = eh->dynindx; |
| 2303 | else |
| 2304 | dynindx |
| 2305 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
| 2306 | hh->sym_indx); |
| 2307 | |
| 2308 | /* Create a dynamic relocation for this entry. Do include the output |
| 2309 | offset of the DLT entry since we need an absolute address in the |
| 2310 | resulting object file. */ |
| 2311 | rel.r_offset = (hh->dlt_offset + sdlt->output_offset |
| 2312 | + sdlt->output_section->vma); |
| 2313 | if (eh && eh->type == STT_FUNC) |
| 2314 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64); |
| 2315 | else |
| 2316 | rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64); |
| 2317 | rel.r_addend = 0; |
| 2318 | |
| 2319 | loc = sdltrel->contents; |
| 2320 | loc += sdltrel->reloc_count++ * sizeof (Elf64_External_Rela); |
| 2321 | bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel, loc); |
| 2322 | } |
| 2323 | return TRUE; |
| 2324 | } |
| 2325 | |
| 2326 | /* Finalize the dynamic relocations. Specifically the FPTR relocations |
| 2327 | for dynamic functions used to initialize static data. */ |
| 2328 | |
| 2329 | static bfd_boolean |
| 2330 | elf64_hppa_finalize_dynreloc (struct elf_link_hash_entry *eh, |
| 2331 | void *data) |
| 2332 | { |
| 2333 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 2334 | struct bfd_link_info *info = (struct bfd_link_info *)data; |
| 2335 | struct elf64_hppa_link_hash_table *hppa_info; |
| 2336 | int dynamic_symbol; |
| 2337 | |
| 2338 | dynamic_symbol = elf64_hppa_dynamic_symbol_p (eh, info); |
| 2339 | |
| 2340 | if (!dynamic_symbol && !info->shared) |
| 2341 | return TRUE; |
| 2342 | |
| 2343 | if (hh->reloc_entries) |
| 2344 | { |
| 2345 | struct elf64_hppa_dyn_reloc_entry *rent; |
| 2346 | int dynindx; |
| 2347 | |
| 2348 | hppa_info = hppa_link_hash_table (info); |
| 2349 | if (hppa_info == NULL) |
| 2350 | return FALSE; |
| 2351 | |
| 2352 | /* We may need to do a relocation against a local symbol, in |
| 2353 | which case we have to look up it's dynamic symbol index off |
| 2354 | the local symbol hash table. */ |
| 2355 | if (eh->dynindx != -1) |
| 2356 | dynindx = eh->dynindx; |
| 2357 | else |
| 2358 | dynindx |
| 2359 | = _bfd_elf_link_lookup_local_dynindx (info, hh->owner, |
| 2360 | hh->sym_indx); |
| 2361 | |
| 2362 | for (rent = hh->reloc_entries; rent; rent = rent->next) |
| 2363 | { |
| 2364 | Elf_Internal_Rela rel; |
| 2365 | bfd_byte *loc; |
| 2366 | |
| 2367 | /* Allocate one iff we are building a shared library, the relocation |
| 2368 | isn't a R_PARISC_FPTR64, or we don't want an opd entry. */ |
| 2369 | if (!info->shared && rent->type == R_PARISC_FPTR64 && hh->want_opd) |
| 2370 | continue; |
| 2371 | |
| 2372 | /* Create a dynamic relocation for this entry. |
| 2373 | |
| 2374 | We need the output offset for the reloc's section because |
| 2375 | we are creating an absolute address in the resulting object |
| 2376 | file. */ |
| 2377 | rel.r_offset = (rent->offset + rent->sec->output_offset |
| 2378 | + rent->sec->output_section->vma); |
| 2379 | |
| 2380 | /* An FPTR64 relocation implies that we took the address of |
| 2381 | a function and that the function has an entry in the .opd |
| 2382 | section. We want the FPTR64 relocation to reference the |
| 2383 | entry in .opd. |
| 2384 | |
| 2385 | We could munge the symbol value in the dynamic symbol table |
| 2386 | (in fact we already do for functions with global scope) to point |
| 2387 | to the .opd entry. Then we could use that dynamic symbol in |
| 2388 | this relocation. |
| 2389 | |
| 2390 | Or we could do something sensible, not munge the symbol's |
| 2391 | address and instead just use a different symbol to reference |
| 2392 | the .opd entry. At least that seems sensible until you |
| 2393 | realize there's no local dynamic symbols we can use for that |
| 2394 | purpose. Thus the hair in the check_relocs routine. |
| 2395 | |
| 2396 | We use a section symbol recorded by check_relocs as the |
| 2397 | base symbol for the relocation. The addend is the difference |
| 2398 | between the section symbol and the address of the .opd entry. */ |
| 2399 | if (info->shared && rent->type == R_PARISC_FPTR64 && hh->want_opd) |
| 2400 | { |
| 2401 | bfd_vma value, value2; |
| 2402 | |
| 2403 | /* First compute the address of the opd entry for this symbol. */ |
| 2404 | value = (hh->opd_offset |
| 2405 | + hppa_info->opd_sec->output_section->vma |
| 2406 | + hppa_info->opd_sec->output_offset); |
| 2407 | |
| 2408 | /* Compute the value of the start of the section with |
| 2409 | the relocation. */ |
| 2410 | value2 = (rent->sec->output_section->vma |
| 2411 | + rent->sec->output_offset); |
| 2412 | |
| 2413 | /* Compute the difference between the start of the section |
| 2414 | with the relocation and the opd entry. */ |
| 2415 | value -= value2; |
| 2416 | |
| 2417 | /* The result becomes the addend of the relocation. */ |
| 2418 | rel.r_addend = value; |
| 2419 | |
| 2420 | /* The section symbol becomes the symbol for the dynamic |
| 2421 | relocation. */ |
| 2422 | dynindx |
| 2423 | = _bfd_elf_link_lookup_local_dynindx (info, |
| 2424 | rent->sec->owner, |
| 2425 | rent->sec_symndx); |
| 2426 | } |
| 2427 | else |
| 2428 | rel.r_addend = rent->addend; |
| 2429 | |
| 2430 | rel.r_info = ELF64_R_INFO (dynindx, rent->type); |
| 2431 | |
| 2432 | loc = hppa_info->other_rel_sec->contents; |
| 2433 | loc += (hppa_info->other_rel_sec->reloc_count++ |
| 2434 | * sizeof (Elf64_External_Rela)); |
| 2435 | bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner, |
| 2436 | &rel, loc); |
| 2437 | } |
| 2438 | } |
| 2439 | |
| 2440 | return TRUE; |
| 2441 | } |
| 2442 | |
| 2443 | /* Used to decide how to sort relocs in an optimal manner for the |
| 2444 | dynamic linker, before writing them out. */ |
| 2445 | |
| 2446 | static enum elf_reloc_type_class |
| 2447 | elf64_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 2448 | const asection *rel_sec ATTRIBUTE_UNUSED, |
| 2449 | const Elf_Internal_Rela *rela) |
| 2450 | { |
| 2451 | if (ELF64_R_SYM (rela->r_info) == STN_UNDEF) |
| 2452 | return reloc_class_relative; |
| 2453 | |
| 2454 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
| 2455 | { |
| 2456 | case R_PARISC_IPLT: |
| 2457 | return reloc_class_plt; |
| 2458 | case R_PARISC_COPY: |
| 2459 | return reloc_class_copy; |
| 2460 | default: |
| 2461 | return reloc_class_normal; |
| 2462 | } |
| 2463 | } |
| 2464 | |
| 2465 | /* Finish up the dynamic sections. */ |
| 2466 | |
| 2467 | static bfd_boolean |
| 2468 | elf64_hppa_finish_dynamic_sections (bfd *output_bfd, |
| 2469 | struct bfd_link_info *info) |
| 2470 | { |
| 2471 | bfd *dynobj; |
| 2472 | asection *sdyn; |
| 2473 | struct elf64_hppa_link_hash_table *hppa_info; |
| 2474 | |
| 2475 | hppa_info = hppa_link_hash_table (info); |
| 2476 | if (hppa_info == NULL) |
| 2477 | return FALSE; |
| 2478 | |
| 2479 | /* Finalize the contents of the .opd section. */ |
| 2480 | elf_link_hash_traverse (elf_hash_table (info), |
| 2481 | elf64_hppa_finalize_opd, |
| 2482 | info); |
| 2483 | |
| 2484 | elf_link_hash_traverse (elf_hash_table (info), |
| 2485 | elf64_hppa_finalize_dynreloc, |
| 2486 | info); |
| 2487 | |
| 2488 | /* Finalize the contents of the .dlt section. */ |
| 2489 | dynobj = elf_hash_table (info)->dynobj; |
| 2490 | /* Finalize the contents of the .dlt section. */ |
| 2491 | elf_link_hash_traverse (elf_hash_table (info), |
| 2492 | elf64_hppa_finalize_dlt, |
| 2493 | info); |
| 2494 | |
| 2495 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 2496 | |
| 2497 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2498 | { |
| 2499 | Elf64_External_Dyn *dyncon, *dynconend; |
| 2500 | |
| 2501 | BFD_ASSERT (sdyn != NULL); |
| 2502 | |
| 2503 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
| 2504 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 2505 | for (; dyncon < dynconend; dyncon++) |
| 2506 | { |
| 2507 | Elf_Internal_Dyn dyn; |
| 2508 | asection *s; |
| 2509 | |
| 2510 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
| 2511 | |
| 2512 | switch (dyn.d_tag) |
| 2513 | { |
| 2514 | default: |
| 2515 | break; |
| 2516 | |
| 2517 | case DT_HP_LOAD_MAP: |
| 2518 | /* Compute the absolute address of 16byte scratchpad area |
| 2519 | for the dynamic linker. |
| 2520 | |
| 2521 | By convention the linker script will allocate the scratchpad |
| 2522 | area at the start of the .data section. So all we have to |
| 2523 | to is find the start of the .data section. */ |
| 2524 | s = bfd_get_section_by_name (output_bfd, ".data"); |
| 2525 | if (!s) |
| 2526 | return FALSE; |
| 2527 | dyn.d_un.d_ptr = s->vma; |
| 2528 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2529 | break; |
| 2530 | |
| 2531 | case DT_PLTGOT: |
| 2532 | /* HP's use PLTGOT to set the GOT register. */ |
| 2533 | dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd); |
| 2534 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2535 | break; |
| 2536 | |
| 2537 | case DT_JMPREL: |
| 2538 | s = hppa_info->plt_rel_sec; |
| 2539 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 2540 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2541 | break; |
| 2542 | |
| 2543 | case DT_PLTRELSZ: |
| 2544 | s = hppa_info->plt_rel_sec; |
| 2545 | dyn.d_un.d_val = s->size; |
| 2546 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2547 | break; |
| 2548 | |
| 2549 | case DT_RELA: |
| 2550 | s = hppa_info->other_rel_sec; |
| 2551 | if (! s || ! s->size) |
| 2552 | s = hppa_info->dlt_rel_sec; |
| 2553 | if (! s || ! s->size) |
| 2554 | s = hppa_info->opd_rel_sec; |
| 2555 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 2556 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2557 | break; |
| 2558 | |
| 2559 | case DT_RELASZ: |
| 2560 | s = hppa_info->other_rel_sec; |
| 2561 | dyn.d_un.d_val = s->size; |
| 2562 | s = hppa_info->dlt_rel_sec; |
| 2563 | dyn.d_un.d_val += s->size; |
| 2564 | s = hppa_info->opd_rel_sec; |
| 2565 | dyn.d_un.d_val += s->size; |
| 2566 | /* There is some question about whether or not the size of |
| 2567 | the PLT relocs should be included here. HP's tools do |
| 2568 | it, so we'll emulate them. */ |
| 2569 | s = hppa_info->plt_rel_sec; |
| 2570 | dyn.d_un.d_val += s->size; |
| 2571 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 2572 | break; |
| 2573 | |
| 2574 | } |
| 2575 | } |
| 2576 | } |
| 2577 | |
| 2578 | return TRUE; |
| 2579 | } |
| 2580 | |
| 2581 | /* Support for core dump NOTE sections. */ |
| 2582 | |
| 2583 | static bfd_boolean |
| 2584 | elf64_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
| 2585 | { |
| 2586 | int offset; |
| 2587 | size_t size; |
| 2588 | |
| 2589 | switch (note->descsz) |
| 2590 | { |
| 2591 | default: |
| 2592 | return FALSE; |
| 2593 | |
| 2594 | case 760: /* Linux/hppa */ |
| 2595 | /* pr_cursig */ |
| 2596 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| 2597 | |
| 2598 | /* pr_pid */ |
| 2599 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
| 2600 | |
| 2601 | /* pr_reg */ |
| 2602 | offset = 112; |
| 2603 | size = 640; |
| 2604 | |
| 2605 | break; |
| 2606 | } |
| 2607 | |
| 2608 | /* Make a ".reg/999" section. */ |
| 2609 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
| 2610 | size, note->descpos + offset); |
| 2611 | } |
| 2612 | |
| 2613 | static bfd_boolean |
| 2614 | elf64_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
| 2615 | { |
| 2616 | char * command; |
| 2617 | int n; |
| 2618 | |
| 2619 | switch (note->descsz) |
| 2620 | { |
| 2621 | default: |
| 2622 | return FALSE; |
| 2623 | |
| 2624 | case 136: /* Linux/hppa elf_prpsinfo. */ |
| 2625 | elf_tdata (abfd)->core->program |
| 2626 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
| 2627 | elf_tdata (abfd)->core->command |
| 2628 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
| 2629 | } |
| 2630 | |
| 2631 | /* Note that for some reason, a spurious space is tacked |
| 2632 | onto the end of the args in some (at least one anyway) |
| 2633 | implementations, so strip it off if it exists. */ |
| 2634 | command = elf_tdata (abfd)->core->command; |
| 2635 | n = strlen (command); |
| 2636 | |
| 2637 | if (0 < n && command[n - 1] == ' ') |
| 2638 | command[n - 1] = '\0'; |
| 2639 | |
| 2640 | return TRUE; |
| 2641 | } |
| 2642 | |
| 2643 | /* Return the number of additional phdrs we will need. |
| 2644 | |
| 2645 | The generic ELF code only creates PT_PHDRs for executables. The HP |
| 2646 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
| 2647 | |
| 2648 | This routine indicates that the backend needs one additional program |
| 2649 | header for that case. |
| 2650 | |
| 2651 | Note we do not have access to the link info structure here, so we have |
| 2652 | to guess whether or not we are building a shared library based on the |
| 2653 | existence of a .interp section. */ |
| 2654 | |
| 2655 | static int |
| 2656 | elf64_hppa_additional_program_headers (bfd *abfd, |
| 2657 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 2658 | { |
| 2659 | asection *s; |
| 2660 | |
| 2661 | /* If we are creating a shared library, then we have to create a |
| 2662 | PT_PHDR segment. HP's dynamic linker chokes without it. */ |
| 2663 | s = bfd_get_section_by_name (abfd, ".interp"); |
| 2664 | if (! s) |
| 2665 | return 1; |
| 2666 | return 0; |
| 2667 | } |
| 2668 | |
| 2669 | /* Allocate and initialize any program headers required by this |
| 2670 | specific backend. |
| 2671 | |
| 2672 | The generic ELF code only creates PT_PHDRs for executables. The HP |
| 2673 | dynamic linker requires PT_PHDRs for dynamic libraries too. |
| 2674 | |
| 2675 | This allocates the PT_PHDR and initializes it in a manner suitable |
| 2676 | for the HP linker. |
| 2677 | |
| 2678 | Note we do not have access to the link info structure here, so we have |
| 2679 | to guess whether or not we are building a shared library based on the |
| 2680 | existence of a .interp section. */ |
| 2681 | |
| 2682 | static bfd_boolean |
| 2683 | elf64_hppa_modify_segment_map (bfd *abfd, |
| 2684 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 2685 | { |
| 2686 | struct elf_segment_map *m; |
| 2687 | asection *s; |
| 2688 | |
| 2689 | s = bfd_get_section_by_name (abfd, ".interp"); |
| 2690 | if (! s) |
| 2691 | { |
| 2692 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
| 2693 | if (m->p_type == PT_PHDR) |
| 2694 | break; |
| 2695 | if (m == NULL) |
| 2696 | { |
| 2697 | m = ((struct elf_segment_map *) |
| 2698 | bfd_zalloc (abfd, (bfd_size_type) sizeof *m)); |
| 2699 | if (m == NULL) |
| 2700 | return FALSE; |
| 2701 | |
| 2702 | m->p_type = PT_PHDR; |
| 2703 | m->p_flags = PF_R | PF_X; |
| 2704 | m->p_flags_valid = 1; |
| 2705 | m->p_paddr_valid = 1; |
| 2706 | m->includes_phdrs = 1; |
| 2707 | |
| 2708 | m->next = elf_seg_map (abfd); |
| 2709 | elf_seg_map (abfd) = m; |
| 2710 | } |
| 2711 | } |
| 2712 | |
| 2713 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
| 2714 | if (m->p_type == PT_LOAD) |
| 2715 | { |
| 2716 | unsigned int i; |
| 2717 | |
| 2718 | for (i = 0; i < m->count; i++) |
| 2719 | { |
| 2720 | /* The code "hint" is not really a hint. It is a requirement |
| 2721 | for certain versions of the HP dynamic linker. Worse yet, |
| 2722 | it must be set even if the shared library does not have |
| 2723 | any code in its "text" segment (thus the check for .hash |
| 2724 | to catch this situation). */ |
| 2725 | if (m->sections[i]->flags & SEC_CODE |
| 2726 | || (strcmp (m->sections[i]->name, ".hash") == 0)) |
| 2727 | m->p_flags |= (PF_X | PF_HP_CODE); |
| 2728 | } |
| 2729 | } |
| 2730 | |
| 2731 | return TRUE; |
| 2732 | } |
| 2733 | |
| 2734 | /* Called when writing out an object file to decide the type of a |
| 2735 | symbol. */ |
| 2736 | static int |
| 2737 | elf64_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, |
| 2738 | int type) |
| 2739 | { |
| 2740 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) |
| 2741 | return STT_PARISC_MILLI; |
| 2742 | else |
| 2743 | return type; |
| 2744 | } |
| 2745 | |
| 2746 | /* Support HP specific sections for core files. */ |
| 2747 | |
| 2748 | static bfd_boolean |
| 2749 | elf64_hppa_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int sec_index, |
| 2750 | const char *typename) |
| 2751 | { |
| 2752 | if (hdr->p_type == PT_HP_CORE_KERNEL) |
| 2753 | { |
| 2754 | asection *sect; |
| 2755 | |
| 2756 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename)) |
| 2757 | return FALSE; |
| 2758 | |
| 2759 | sect = bfd_make_section_anyway (abfd, ".kernel"); |
| 2760 | if (sect == NULL) |
| 2761 | return FALSE; |
| 2762 | sect->size = hdr->p_filesz; |
| 2763 | sect->filepos = hdr->p_offset; |
| 2764 | sect->flags = SEC_HAS_CONTENTS | SEC_READONLY; |
| 2765 | return TRUE; |
| 2766 | } |
| 2767 | |
| 2768 | if (hdr->p_type == PT_HP_CORE_PROC) |
| 2769 | { |
| 2770 | int sig; |
| 2771 | |
| 2772 | if (bfd_seek (abfd, hdr->p_offset, SEEK_SET) != 0) |
| 2773 | return FALSE; |
| 2774 | if (bfd_bread (&sig, 4, abfd) != 4) |
| 2775 | return FALSE; |
| 2776 | |
| 2777 | elf_tdata (abfd)->core->signal = sig; |
| 2778 | |
| 2779 | if (!_bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename)) |
| 2780 | return FALSE; |
| 2781 | |
| 2782 | /* GDB uses the ".reg" section to read register contents. */ |
| 2783 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", hdr->p_filesz, |
| 2784 | hdr->p_offset); |
| 2785 | } |
| 2786 | |
| 2787 | if (hdr->p_type == PT_HP_CORE_LOADABLE |
| 2788 | || hdr->p_type == PT_HP_CORE_STACK |
| 2789 | || hdr->p_type == PT_HP_CORE_MMF) |
| 2790 | hdr->p_type = PT_LOAD; |
| 2791 | |
| 2792 | return _bfd_elf_make_section_from_phdr (abfd, hdr, sec_index, typename); |
| 2793 | } |
| 2794 | |
| 2795 | /* Hook called by the linker routine which adds symbols from an object |
| 2796 | file. HP's libraries define symbols with HP specific section |
| 2797 | indices, which we have to handle. */ |
| 2798 | |
| 2799 | static bfd_boolean |
| 2800 | elf_hppa_add_symbol_hook (bfd *abfd, |
| 2801 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 2802 | Elf_Internal_Sym *sym, |
| 2803 | const char **namep ATTRIBUTE_UNUSED, |
| 2804 | flagword *flagsp ATTRIBUTE_UNUSED, |
| 2805 | asection **secp, |
| 2806 | bfd_vma *valp) |
| 2807 | { |
| 2808 | unsigned int sec_index = sym->st_shndx; |
| 2809 | |
| 2810 | switch (sec_index) |
| 2811 | { |
| 2812 | case SHN_PARISC_ANSI_COMMON: |
| 2813 | *secp = bfd_make_section_old_way (abfd, ".PARISC.ansi.common"); |
| 2814 | (*secp)->flags |= SEC_IS_COMMON; |
| 2815 | *valp = sym->st_size; |
| 2816 | break; |
| 2817 | |
| 2818 | case SHN_PARISC_HUGE_COMMON: |
| 2819 | *secp = bfd_make_section_old_way (abfd, ".PARISC.huge.common"); |
| 2820 | (*secp)->flags |= SEC_IS_COMMON; |
| 2821 | *valp = sym->st_size; |
| 2822 | break; |
| 2823 | } |
| 2824 | |
| 2825 | return TRUE; |
| 2826 | } |
| 2827 | |
| 2828 | static bfd_boolean |
| 2829 | elf_hppa_unmark_useless_dynamic_symbols (struct elf_link_hash_entry *h, |
| 2830 | void *data) |
| 2831 | { |
| 2832 | struct bfd_link_info *info = data; |
| 2833 | |
| 2834 | /* If we are not creating a shared library, and this symbol is |
| 2835 | referenced by a shared library but is not defined anywhere, then |
| 2836 | the generic code will warn that it is undefined. |
| 2837 | |
| 2838 | This behavior is undesirable on HPs since the standard shared |
| 2839 | libraries contain references to undefined symbols. |
| 2840 | |
| 2841 | So we twiddle the flags associated with such symbols so that they |
| 2842 | will not trigger the warning. ?!? FIXME. This is horribly fragile. |
| 2843 | |
| 2844 | Ultimately we should have better controls over the generic ELF BFD |
| 2845 | linker code. */ |
| 2846 | if (! info->relocatable |
| 2847 | && info->unresolved_syms_in_shared_libs != RM_IGNORE |
| 2848 | && h->root.type == bfd_link_hash_undefined |
| 2849 | && h->ref_dynamic |
| 2850 | && !h->ref_regular) |
| 2851 | { |
| 2852 | h->ref_dynamic = 0; |
| 2853 | h->pointer_equality_needed = 1; |
| 2854 | } |
| 2855 | |
| 2856 | return TRUE; |
| 2857 | } |
| 2858 | |
| 2859 | static bfd_boolean |
| 2860 | elf_hppa_remark_useless_dynamic_symbols (struct elf_link_hash_entry *h, |
| 2861 | void *data) |
| 2862 | { |
| 2863 | struct bfd_link_info *info = data; |
| 2864 | |
| 2865 | /* If we are not creating a shared library, and this symbol is |
| 2866 | referenced by a shared library but is not defined anywhere, then |
| 2867 | the generic code will warn that it is undefined. |
| 2868 | |
| 2869 | This behavior is undesirable on HPs since the standard shared |
| 2870 | libraries contain references to undefined symbols. |
| 2871 | |
| 2872 | So we twiddle the flags associated with such symbols so that they |
| 2873 | will not trigger the warning. ?!? FIXME. This is horribly fragile. |
| 2874 | |
| 2875 | Ultimately we should have better controls over the generic ELF BFD |
| 2876 | linker code. */ |
| 2877 | if (! info->relocatable |
| 2878 | && info->unresolved_syms_in_shared_libs != RM_IGNORE |
| 2879 | && h->root.type == bfd_link_hash_undefined |
| 2880 | && !h->ref_dynamic |
| 2881 | && !h->ref_regular |
| 2882 | && h->pointer_equality_needed) |
| 2883 | { |
| 2884 | h->ref_dynamic = 1; |
| 2885 | h->pointer_equality_needed = 0; |
| 2886 | } |
| 2887 | |
| 2888 | return TRUE; |
| 2889 | } |
| 2890 | |
| 2891 | static bfd_boolean |
| 2892 | elf_hppa_is_dynamic_loader_symbol (const char *name) |
| 2893 | { |
| 2894 | return (! strcmp (name, "__CPU_REVISION") |
| 2895 | || ! strcmp (name, "__CPU_KEYBITS_1") |
| 2896 | || ! strcmp (name, "__SYSTEM_ID_D") |
| 2897 | || ! strcmp (name, "__FPU_MODEL") |
| 2898 | || ! strcmp (name, "__FPU_REVISION") |
| 2899 | || ! strcmp (name, "__ARGC") |
| 2900 | || ! strcmp (name, "__ARGV") |
| 2901 | || ! strcmp (name, "__ENVP") |
| 2902 | || ! strcmp (name, "__TLS_SIZE_D") |
| 2903 | || ! strcmp (name, "__LOAD_INFO") |
| 2904 | || ! strcmp (name, "__systab")); |
| 2905 | } |
| 2906 | |
| 2907 | /* Record the lowest address for the data and text segments. */ |
| 2908 | static void |
| 2909 | elf_hppa_record_segment_addrs (bfd *abfd, |
| 2910 | asection *section, |
| 2911 | void *data) |
| 2912 | { |
| 2913 | struct elf64_hppa_link_hash_table *hppa_info = data; |
| 2914 | |
| 2915 | if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 2916 | { |
| 2917 | bfd_vma value; |
| 2918 | Elf_Internal_Phdr *p; |
| 2919 | |
| 2920 | p = _bfd_elf_find_segment_containing_section (abfd, section->output_section); |
| 2921 | BFD_ASSERT (p != NULL); |
| 2922 | value = p->p_vaddr; |
| 2923 | |
| 2924 | if (section->flags & SEC_READONLY) |
| 2925 | { |
| 2926 | if (value < hppa_info->text_segment_base) |
| 2927 | hppa_info->text_segment_base = value; |
| 2928 | } |
| 2929 | else |
| 2930 | { |
| 2931 | if (value < hppa_info->data_segment_base) |
| 2932 | hppa_info->data_segment_base = value; |
| 2933 | } |
| 2934 | } |
| 2935 | } |
| 2936 | |
| 2937 | /* Called after we have seen all the input files/sections, but before |
| 2938 | final symbol resolution and section placement has been determined. |
| 2939 | |
| 2940 | We use this hook to (possibly) provide a value for __gp, then we |
| 2941 | fall back to the generic ELF final link routine. */ |
| 2942 | |
| 2943 | static bfd_boolean |
| 2944 | elf_hppa_final_link (bfd *abfd, struct bfd_link_info *info) |
| 2945 | { |
| 2946 | bfd_boolean retval; |
| 2947 | struct elf64_hppa_link_hash_table *hppa_info = hppa_link_hash_table (info); |
| 2948 | |
| 2949 | if (hppa_info == NULL) |
| 2950 | return FALSE; |
| 2951 | |
| 2952 | if (! info->relocatable) |
| 2953 | { |
| 2954 | struct elf_link_hash_entry *gp; |
| 2955 | bfd_vma gp_val; |
| 2956 | |
| 2957 | /* The linker script defines a value for __gp iff it was referenced |
| 2958 | by one of the objects being linked. First try to find the symbol |
| 2959 | in the hash table. If that fails, just compute the value __gp |
| 2960 | should have had. */ |
| 2961 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, |
| 2962 | FALSE, FALSE); |
| 2963 | |
| 2964 | if (gp) |
| 2965 | { |
| 2966 | |
| 2967 | /* Adjust the value of __gp as we may want to slide it into the |
| 2968 | .plt section so that the stubs can access PLT entries without |
| 2969 | using an addil sequence. */ |
| 2970 | gp->root.u.def.value += hppa_info->gp_offset; |
| 2971 | |
| 2972 | gp_val = (gp->root.u.def.section->output_section->vma |
| 2973 | + gp->root.u.def.section->output_offset |
| 2974 | + gp->root.u.def.value); |
| 2975 | } |
| 2976 | else |
| 2977 | { |
| 2978 | asection *sec; |
| 2979 | |
| 2980 | /* First look for a .plt section. If found, then __gp is the |
| 2981 | address of the .plt + gp_offset. |
| 2982 | |
| 2983 | If no .plt is found, then look for .dlt, .opd and .data (in |
| 2984 | that order) and set __gp to the base address of whichever |
| 2985 | section is found first. */ |
| 2986 | |
| 2987 | sec = hppa_info->plt_sec; |
| 2988 | if (sec && ! (sec->flags & SEC_EXCLUDE)) |
| 2989 | gp_val = (sec->output_offset |
| 2990 | + sec->output_section->vma |
| 2991 | + hppa_info->gp_offset); |
| 2992 | else |
| 2993 | { |
| 2994 | sec = hppa_info->dlt_sec; |
| 2995 | if (!sec || (sec->flags & SEC_EXCLUDE)) |
| 2996 | sec = hppa_info->opd_sec; |
| 2997 | if (!sec || (sec->flags & SEC_EXCLUDE)) |
| 2998 | sec = bfd_get_section_by_name (abfd, ".data"); |
| 2999 | if (!sec || (sec->flags & SEC_EXCLUDE)) |
| 3000 | gp_val = 0; |
| 3001 | else |
| 3002 | gp_val = sec->output_offset + sec->output_section->vma; |
| 3003 | } |
| 3004 | } |
| 3005 | |
| 3006 | /* Install whatever value we found/computed for __gp. */ |
| 3007 | _bfd_set_gp_value (abfd, gp_val); |
| 3008 | } |
| 3009 | |
| 3010 | /* We need to know the base of the text and data segments so that we |
| 3011 | can perform SEGREL relocations. We will record the base addresses |
| 3012 | when we encounter the first SEGREL relocation. */ |
| 3013 | hppa_info->text_segment_base = (bfd_vma)-1; |
| 3014 | hppa_info->data_segment_base = (bfd_vma)-1; |
| 3015 | |
| 3016 | /* HP's shared libraries have references to symbols that are not |
| 3017 | defined anywhere. The generic ELF BFD linker code will complain |
| 3018 | about such symbols. |
| 3019 | |
| 3020 | So we detect the losing case and arrange for the flags on the symbol |
| 3021 | to indicate that it was never referenced. This keeps the generic |
| 3022 | ELF BFD link code happy and appears to not create any secondary |
| 3023 | problems. Ultimately we need a way to control the behavior of the |
| 3024 | generic ELF BFD link code better. */ |
| 3025 | elf_link_hash_traverse (elf_hash_table (info), |
| 3026 | elf_hppa_unmark_useless_dynamic_symbols, |
| 3027 | info); |
| 3028 | |
| 3029 | /* Invoke the regular ELF backend linker to do all the work. */ |
| 3030 | retval = bfd_elf_final_link (abfd, info); |
| 3031 | |
| 3032 | elf_link_hash_traverse (elf_hash_table (info), |
| 3033 | elf_hppa_remark_useless_dynamic_symbols, |
| 3034 | info); |
| 3035 | |
| 3036 | /* If we're producing a final executable, sort the contents of the |
| 3037 | unwind section. */ |
| 3038 | if (retval && !info->relocatable) |
| 3039 | retval = elf_hppa_sort_unwind (abfd); |
| 3040 | |
| 3041 | return retval; |
| 3042 | } |
| 3043 | |
| 3044 | /* Relocate the given INSN. VALUE should be the actual value we want |
| 3045 | to insert into the instruction, ie by this point we should not be |
| 3046 | concerned with computing an offset relative to the DLT, PC, etc. |
| 3047 | Instead this routine is meant to handle the bit manipulations needed |
| 3048 | to insert the relocation into the given instruction. */ |
| 3049 | |
| 3050 | static int |
| 3051 | elf_hppa_relocate_insn (int insn, int sym_value, unsigned int r_type) |
| 3052 | { |
| 3053 | switch (r_type) |
| 3054 | { |
| 3055 | /* This is any 22 bit branch. In PA2.0 syntax it corresponds to |
| 3056 | the "B" instruction. */ |
| 3057 | case R_PARISC_PCREL22F: |
| 3058 | case R_PARISC_PCREL22C: |
| 3059 | return (insn & ~0x3ff1ffd) | re_assemble_22 (sym_value); |
| 3060 | |
| 3061 | /* This is any 12 bit branch. */ |
| 3062 | case R_PARISC_PCREL12F: |
| 3063 | return (insn & ~0x1ffd) | re_assemble_12 (sym_value); |
| 3064 | |
| 3065 | /* This is any 17 bit branch. In PA2.0 syntax it also corresponds |
| 3066 | to the "B" instruction as well as BE. */ |
| 3067 | case R_PARISC_PCREL17F: |
| 3068 | case R_PARISC_DIR17F: |
| 3069 | case R_PARISC_DIR17R: |
| 3070 | case R_PARISC_PCREL17C: |
| 3071 | case R_PARISC_PCREL17R: |
| 3072 | return (insn & ~0x1f1ffd) | re_assemble_17 (sym_value); |
| 3073 | |
| 3074 | /* ADDIL or LDIL instructions. */ |
| 3075 | case R_PARISC_DLTREL21L: |
| 3076 | case R_PARISC_DLTIND21L: |
| 3077 | case R_PARISC_LTOFF_FPTR21L: |
| 3078 | case R_PARISC_PCREL21L: |
| 3079 | case R_PARISC_LTOFF_TP21L: |
| 3080 | case R_PARISC_DPREL21L: |
| 3081 | case R_PARISC_PLTOFF21L: |
| 3082 | case R_PARISC_DIR21L: |
| 3083 | return (insn & ~0x1fffff) | re_assemble_21 (sym_value); |
| 3084 | |
| 3085 | /* LDO and integer loads/stores with 14 bit displacements. */ |
| 3086 | case R_PARISC_DLTREL14R: |
| 3087 | case R_PARISC_DLTREL14F: |
| 3088 | case R_PARISC_DLTIND14R: |
| 3089 | case R_PARISC_DLTIND14F: |
| 3090 | case R_PARISC_LTOFF_FPTR14R: |
| 3091 | case R_PARISC_PCREL14R: |
| 3092 | case R_PARISC_PCREL14F: |
| 3093 | case R_PARISC_LTOFF_TP14R: |
| 3094 | case R_PARISC_LTOFF_TP14F: |
| 3095 | case R_PARISC_DPREL14R: |
| 3096 | case R_PARISC_DPREL14F: |
| 3097 | case R_PARISC_PLTOFF14R: |
| 3098 | case R_PARISC_PLTOFF14F: |
| 3099 | case R_PARISC_DIR14R: |
| 3100 | case R_PARISC_DIR14F: |
| 3101 | return (insn & ~0x3fff) | low_sign_unext (sym_value, 14); |
| 3102 | |
| 3103 | /* PA2.0W LDO and integer loads/stores with 16 bit displacements. */ |
| 3104 | case R_PARISC_LTOFF_FPTR16F: |
| 3105 | case R_PARISC_PCREL16F: |
| 3106 | case R_PARISC_LTOFF_TP16F: |
| 3107 | case R_PARISC_GPREL16F: |
| 3108 | case R_PARISC_PLTOFF16F: |
| 3109 | case R_PARISC_DIR16F: |
| 3110 | case R_PARISC_LTOFF16F: |
| 3111 | return (insn & ~0xffff) | re_assemble_16 (sym_value); |
| 3112 | |
| 3113 | /* Doubleword loads and stores with a 14 bit displacement. */ |
| 3114 | case R_PARISC_DLTREL14DR: |
| 3115 | case R_PARISC_DLTIND14DR: |
| 3116 | case R_PARISC_LTOFF_FPTR14DR: |
| 3117 | case R_PARISC_LTOFF_FPTR16DF: |
| 3118 | case R_PARISC_PCREL14DR: |
| 3119 | case R_PARISC_PCREL16DF: |
| 3120 | case R_PARISC_LTOFF_TP14DR: |
| 3121 | case R_PARISC_LTOFF_TP16DF: |
| 3122 | case R_PARISC_DPREL14DR: |
| 3123 | case R_PARISC_GPREL16DF: |
| 3124 | case R_PARISC_PLTOFF14DR: |
| 3125 | case R_PARISC_PLTOFF16DF: |
| 3126 | case R_PARISC_DIR14DR: |
| 3127 | case R_PARISC_DIR16DF: |
| 3128 | case R_PARISC_LTOFF16DF: |
| 3129 | return (insn & ~0x3ff1) | (((sym_value & 0x2000) >> 13) |
| 3130 | | ((sym_value & 0x1ff8) << 1)); |
| 3131 | |
| 3132 | /* Floating point single word load/store instructions. */ |
| 3133 | case R_PARISC_DLTREL14WR: |
| 3134 | case R_PARISC_DLTIND14WR: |
| 3135 | case R_PARISC_LTOFF_FPTR14WR: |
| 3136 | case R_PARISC_LTOFF_FPTR16WF: |
| 3137 | case R_PARISC_PCREL14WR: |
| 3138 | case R_PARISC_PCREL16WF: |
| 3139 | case R_PARISC_LTOFF_TP14WR: |
| 3140 | case R_PARISC_LTOFF_TP16WF: |
| 3141 | case R_PARISC_DPREL14WR: |
| 3142 | case R_PARISC_GPREL16WF: |
| 3143 | case R_PARISC_PLTOFF14WR: |
| 3144 | case R_PARISC_PLTOFF16WF: |
| 3145 | case R_PARISC_DIR16WF: |
| 3146 | case R_PARISC_DIR14WR: |
| 3147 | case R_PARISC_LTOFF16WF: |
| 3148 | return (insn & ~0x3ff9) | (((sym_value & 0x2000) >> 13) |
| 3149 | | ((sym_value & 0x1ffc) << 1)); |
| 3150 | |
| 3151 | default: |
| 3152 | return insn; |
| 3153 | } |
| 3154 | } |
| 3155 | |
| 3156 | /* Compute the value for a relocation (REL) during a final link stage, |
| 3157 | then insert the value into the proper location in CONTENTS. |
| 3158 | |
| 3159 | VALUE is a tentative value for the relocation and may be overridden |
| 3160 | and modified here based on the specific relocation to be performed. |
| 3161 | |
| 3162 | For example we do conversions for PC-relative branches in this routine |
| 3163 | or redirection of calls to external routines to stubs. |
| 3164 | |
| 3165 | The work of actually applying the relocation is left to a helper |
| 3166 | routine in an attempt to reduce the complexity and size of this |
| 3167 | function. */ |
| 3168 | |
| 3169 | static bfd_reloc_status_type |
| 3170 | elf_hppa_final_link_relocate (Elf_Internal_Rela *rel, |
| 3171 | bfd *input_bfd, |
| 3172 | bfd *output_bfd, |
| 3173 | asection *input_section, |
| 3174 | bfd_byte *contents, |
| 3175 | bfd_vma value, |
| 3176 | struct bfd_link_info *info, |
| 3177 | asection *sym_sec, |
| 3178 | struct elf_link_hash_entry *eh) |
| 3179 | { |
| 3180 | struct elf64_hppa_link_hash_table *hppa_info = hppa_link_hash_table (info); |
| 3181 | struct elf64_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh); |
| 3182 | bfd_vma *local_offsets; |
| 3183 | Elf_Internal_Shdr *symtab_hdr; |
| 3184 | int insn; |
| 3185 | bfd_vma max_branch_offset = 0; |
| 3186 | bfd_vma offset = rel->r_offset; |
| 3187 | bfd_signed_vma addend = rel->r_addend; |
| 3188 | reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info); |
| 3189 | unsigned int r_symndx = ELF_R_SYM (rel->r_info); |
| 3190 | unsigned int r_type = howto->type; |
| 3191 | bfd_byte *hit_data = contents + offset; |
| 3192 | |
| 3193 | if (hppa_info == NULL) |
| 3194 | return bfd_reloc_notsupported; |
| 3195 | |
| 3196 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3197 | local_offsets = elf_local_got_offsets (input_bfd); |
| 3198 | insn = bfd_get_32 (input_bfd, hit_data); |
| 3199 | |
| 3200 | switch (r_type) |
| 3201 | { |
| 3202 | case R_PARISC_NONE: |
| 3203 | break; |
| 3204 | |
| 3205 | /* Basic function call support. |
| 3206 | |
| 3207 | Note for a call to a function defined in another dynamic library |
| 3208 | we want to redirect the call to a stub. */ |
| 3209 | |
| 3210 | /* PC relative relocs without an implicit offset. */ |
| 3211 | case R_PARISC_PCREL21L: |
| 3212 | case R_PARISC_PCREL14R: |
| 3213 | case R_PARISC_PCREL14F: |
| 3214 | case R_PARISC_PCREL14WR: |
| 3215 | case R_PARISC_PCREL14DR: |
| 3216 | case R_PARISC_PCREL16F: |
| 3217 | case R_PARISC_PCREL16WF: |
| 3218 | case R_PARISC_PCREL16DF: |
| 3219 | { |
| 3220 | /* If this is a call to a function defined in another dynamic |
| 3221 | library, then redirect the call to the local stub for this |
| 3222 | function. */ |
| 3223 | if (sym_sec == NULL || sym_sec->output_section == NULL) |
| 3224 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset |
| 3225 | + hppa_info->stub_sec->output_section->vma); |
| 3226 | |
| 3227 | /* Turn VALUE into a proper PC relative address. */ |
| 3228 | value -= (offset + input_section->output_offset |
| 3229 | + input_section->output_section->vma); |
| 3230 | |
| 3231 | /* Adjust for any field selectors. */ |
| 3232 | if (r_type == R_PARISC_PCREL21L) |
| 3233 | value = hppa_field_adjust (value, -8 + addend, e_lsel); |
| 3234 | else if (r_type == R_PARISC_PCREL14F |
| 3235 | || r_type == R_PARISC_PCREL16F |
| 3236 | || r_type == R_PARISC_PCREL16WF |
| 3237 | || r_type == R_PARISC_PCREL16DF) |
| 3238 | value = hppa_field_adjust (value, -8 + addend, e_fsel); |
| 3239 | else |
| 3240 | value = hppa_field_adjust (value, -8 + addend, e_rsel); |
| 3241 | |
| 3242 | /* Apply the relocation to the given instruction. */ |
| 3243 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); |
| 3244 | break; |
| 3245 | } |
| 3246 | |
| 3247 | case R_PARISC_PCREL12F: |
| 3248 | case R_PARISC_PCREL22F: |
| 3249 | case R_PARISC_PCREL17F: |
| 3250 | case R_PARISC_PCREL22C: |
| 3251 | case R_PARISC_PCREL17C: |
| 3252 | case R_PARISC_PCREL17R: |
| 3253 | { |
| 3254 | /* If this is a call to a function defined in another dynamic |
| 3255 | library, then redirect the call to the local stub for this |
| 3256 | function. */ |
| 3257 | if (sym_sec == NULL || sym_sec->output_section == NULL) |
| 3258 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset |
| 3259 | + hppa_info->stub_sec->output_section->vma); |
| 3260 | |
| 3261 | /* Turn VALUE into a proper PC relative address. */ |
| 3262 | value -= (offset + input_section->output_offset |
| 3263 | + input_section->output_section->vma); |
| 3264 | addend -= 8; |
| 3265 | |
| 3266 | if (r_type == (unsigned int) R_PARISC_PCREL22F) |
| 3267 | max_branch_offset = (1 << (22-1)) << 2; |
| 3268 | else if (r_type == (unsigned int) R_PARISC_PCREL17F) |
| 3269 | max_branch_offset = (1 << (17-1)) << 2; |
| 3270 | else if (r_type == (unsigned int) R_PARISC_PCREL12F) |
| 3271 | max_branch_offset = (1 << (12-1)) << 2; |
| 3272 | |
| 3273 | /* Make sure we can reach the branch target. */ |
| 3274 | if (max_branch_offset != 0 |
| 3275 | && value + addend + max_branch_offset >= 2*max_branch_offset) |
| 3276 | { |
| 3277 | (*_bfd_error_handler) |
| 3278 | (_("%B(%A+0x%" BFD_VMA_FMT "x): cannot reach %s"), |
| 3279 | input_bfd, |
| 3280 | input_section, |
| 3281 | offset, |
| 3282 | eh ? eh->root.root.string : "unknown"); |
| 3283 | bfd_set_error (bfd_error_bad_value); |
| 3284 | return bfd_reloc_overflow; |
| 3285 | } |
| 3286 | |
| 3287 | /* Adjust for any field selectors. */ |
| 3288 | if (r_type == R_PARISC_PCREL17R) |
| 3289 | value = hppa_field_adjust (value, addend, e_rsel); |
| 3290 | else |
| 3291 | value = hppa_field_adjust (value, addend, e_fsel); |
| 3292 | |
| 3293 | /* All branches are implicitly shifted by 2 places. */ |
| 3294 | value >>= 2; |
| 3295 | |
| 3296 | /* Apply the relocation to the given instruction. */ |
| 3297 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); |
| 3298 | break; |
| 3299 | } |
| 3300 | |
| 3301 | /* Indirect references to data through the DLT. */ |
| 3302 | case R_PARISC_DLTIND14R: |
| 3303 | case R_PARISC_DLTIND14F: |
| 3304 | case R_PARISC_DLTIND14DR: |
| 3305 | case R_PARISC_DLTIND14WR: |
| 3306 | case R_PARISC_DLTIND21L: |
| 3307 | case R_PARISC_LTOFF_FPTR14R: |
| 3308 | case R_PARISC_LTOFF_FPTR14DR: |
| 3309 | case R_PARISC_LTOFF_FPTR14WR: |
| 3310 | case R_PARISC_LTOFF_FPTR21L: |
| 3311 | case R_PARISC_LTOFF_FPTR16F: |
| 3312 | case R_PARISC_LTOFF_FPTR16WF: |
| 3313 | case R_PARISC_LTOFF_FPTR16DF: |
| 3314 | case R_PARISC_LTOFF_TP21L: |
| 3315 | case R_PARISC_LTOFF_TP14R: |
| 3316 | case R_PARISC_LTOFF_TP14F: |
| 3317 | case R_PARISC_LTOFF_TP14WR: |
| 3318 | case R_PARISC_LTOFF_TP14DR: |
| 3319 | case R_PARISC_LTOFF_TP16F: |
| 3320 | case R_PARISC_LTOFF_TP16WF: |
| 3321 | case R_PARISC_LTOFF_TP16DF: |
| 3322 | case R_PARISC_LTOFF16F: |
| 3323 | case R_PARISC_LTOFF16WF: |
| 3324 | case R_PARISC_LTOFF16DF: |
| 3325 | { |
| 3326 | bfd_vma off; |
| 3327 | |
| 3328 | /* If this relocation was against a local symbol, then we still |
| 3329 | have not set up the DLT entry (it's not convenient to do so |
| 3330 | in the "finalize_dlt" routine because it is difficult to get |
| 3331 | to the local symbol's value). |
| 3332 | |
| 3333 | So, if this is a local symbol (h == NULL), then we need to |
| 3334 | fill in its DLT entry. |
| 3335 | |
| 3336 | Similarly we may still need to set up an entry in .opd for |
| 3337 | a local function which had its address taken. */ |
| 3338 | if (hh == NULL) |
| 3339 | { |
| 3340 | bfd_vma *local_opd_offsets, *local_dlt_offsets; |
| 3341 | |
| 3342 | if (local_offsets == NULL) |
| 3343 | abort (); |
| 3344 | |
| 3345 | /* Now do .opd creation if needed. */ |
| 3346 | if (r_type == R_PARISC_LTOFF_FPTR14R |
| 3347 | || r_type == R_PARISC_LTOFF_FPTR14DR |
| 3348 | || r_type == R_PARISC_LTOFF_FPTR14WR |
| 3349 | || r_type == R_PARISC_LTOFF_FPTR21L |
| 3350 | || r_type == R_PARISC_LTOFF_FPTR16F |
| 3351 | || r_type == R_PARISC_LTOFF_FPTR16WF |
| 3352 | || r_type == R_PARISC_LTOFF_FPTR16DF) |
| 3353 | { |
| 3354 | local_opd_offsets = local_offsets + 2 * symtab_hdr->sh_info; |
| 3355 | off = local_opd_offsets[r_symndx]; |
| 3356 | |
| 3357 | /* The last bit records whether we've already initialised |
| 3358 | this local .opd entry. */ |
| 3359 | if ((off & 1) != 0) |
| 3360 | { |
| 3361 | BFD_ASSERT (off != (bfd_vma) -1); |
| 3362 | off &= ~1; |
| 3363 | } |
| 3364 | else |
| 3365 | { |
| 3366 | local_opd_offsets[r_symndx] |= 1; |
| 3367 | |
| 3368 | /* The first two words of an .opd entry are zero. */ |
| 3369 | memset (hppa_info->opd_sec->contents + off, 0, 16); |
| 3370 | |
| 3371 | /* The next word is the address of the function. */ |
| 3372 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, |
| 3373 | (hppa_info->opd_sec->contents + off + 16)); |
| 3374 | |
| 3375 | /* The last word is our local __gp value. */ |
| 3376 | value = _bfd_get_gp_value |
| 3377 | (hppa_info->opd_sec->output_section->owner); |
| 3378 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
| 3379 | (hppa_info->opd_sec->contents + off + 24)); |
| 3380 | } |
| 3381 | |
| 3382 | /* The DLT value is the address of the .opd entry. */ |
| 3383 | value = (off |
| 3384 | + hppa_info->opd_sec->output_offset |
| 3385 | + hppa_info->opd_sec->output_section->vma); |
| 3386 | addend = 0; |
| 3387 | } |
| 3388 | |
| 3389 | local_dlt_offsets = local_offsets; |
| 3390 | off = local_dlt_offsets[r_symndx]; |
| 3391 | |
| 3392 | if ((off & 1) != 0) |
| 3393 | { |
| 3394 | BFD_ASSERT (off != (bfd_vma) -1); |
| 3395 | off &= ~1; |
| 3396 | } |
| 3397 | else |
| 3398 | { |
| 3399 | local_dlt_offsets[r_symndx] |= 1; |
| 3400 | bfd_put_64 (hppa_info->dlt_sec->owner, |
| 3401 | value + addend, |
| 3402 | hppa_info->dlt_sec->contents + off); |
| 3403 | } |
| 3404 | } |
| 3405 | else |
| 3406 | off = hh->dlt_offset; |
| 3407 | |
| 3408 | /* We want the value of the DLT offset for this symbol, not |
| 3409 | the symbol's actual address. Note that __gp may not point |
| 3410 | to the start of the DLT, so we have to compute the absolute |
| 3411 | address, then subtract out the value of __gp. */ |
| 3412 | value = (off |
| 3413 | + hppa_info->dlt_sec->output_offset |
| 3414 | + hppa_info->dlt_sec->output_section->vma); |
| 3415 | value -= _bfd_get_gp_value (output_bfd); |
| 3416 | |
| 3417 | /* All DLTIND relocations are basically the same at this point, |
| 3418 | except that we need different field selectors for the 21bit |
| 3419 | version vs the 14bit versions. */ |
| 3420 | if (r_type == R_PARISC_DLTIND21L |
| 3421 | || r_type == R_PARISC_LTOFF_FPTR21L |
| 3422 | || r_type == R_PARISC_LTOFF_TP21L) |
| 3423 | value = hppa_field_adjust (value, 0, e_lsel); |
| 3424 | else if (r_type == R_PARISC_DLTIND14F |
| 3425 | || r_type == R_PARISC_LTOFF_FPTR16F |
| 3426 | || r_type == R_PARISC_LTOFF_FPTR16WF |
| 3427 | || r_type == R_PARISC_LTOFF_FPTR16DF |
| 3428 | || r_type == R_PARISC_LTOFF16F |
| 3429 | || r_type == R_PARISC_LTOFF16DF |
| 3430 | || r_type == R_PARISC_LTOFF16WF |
| 3431 | || r_type == R_PARISC_LTOFF_TP16F |
| 3432 | || r_type == R_PARISC_LTOFF_TP16WF |
| 3433 | || r_type == R_PARISC_LTOFF_TP16DF) |
| 3434 | value = hppa_field_adjust (value, 0, e_fsel); |
| 3435 | else |
| 3436 | value = hppa_field_adjust (value, 0, e_rsel); |
| 3437 | |
| 3438 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); |
| 3439 | break; |
| 3440 | } |
| 3441 | |
| 3442 | case R_PARISC_DLTREL14R: |
| 3443 | case R_PARISC_DLTREL14F: |
| 3444 | case R_PARISC_DLTREL14DR: |
| 3445 | case R_PARISC_DLTREL14WR: |
| 3446 | case R_PARISC_DLTREL21L: |
| 3447 | case R_PARISC_DPREL21L: |
| 3448 | case R_PARISC_DPREL14WR: |
| 3449 | case R_PARISC_DPREL14DR: |
| 3450 | case R_PARISC_DPREL14R: |
| 3451 | case R_PARISC_DPREL14F: |
| 3452 | case R_PARISC_GPREL16F: |
| 3453 | case R_PARISC_GPREL16WF: |
| 3454 | case R_PARISC_GPREL16DF: |
| 3455 | { |
| 3456 | /* Subtract out the global pointer value to make value a DLT |
| 3457 | relative address. */ |
| 3458 | value -= _bfd_get_gp_value (output_bfd); |
| 3459 | |
| 3460 | /* All DLTREL relocations are basically the same at this point, |
| 3461 | except that we need different field selectors for the 21bit |
| 3462 | version vs the 14bit versions. */ |
| 3463 | if (r_type == R_PARISC_DLTREL21L |
| 3464 | || r_type == R_PARISC_DPREL21L) |
| 3465 | value = hppa_field_adjust (value, addend, e_lrsel); |
| 3466 | else if (r_type == R_PARISC_DLTREL14F |
| 3467 | || r_type == R_PARISC_DPREL14F |
| 3468 | || r_type == R_PARISC_GPREL16F |
| 3469 | || r_type == R_PARISC_GPREL16WF |
| 3470 | || r_type == R_PARISC_GPREL16DF) |
| 3471 | value = hppa_field_adjust (value, addend, e_fsel); |
| 3472 | else |
| 3473 | value = hppa_field_adjust (value, addend, e_rrsel); |
| 3474 | |
| 3475 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); |
| 3476 | break; |
| 3477 | } |
| 3478 | |
| 3479 | case R_PARISC_DIR21L: |
| 3480 | case R_PARISC_DIR17R: |
| 3481 | case R_PARISC_DIR17F: |
| 3482 | case R_PARISC_DIR14R: |
| 3483 | case R_PARISC_DIR14F: |
| 3484 | case R_PARISC_DIR14WR: |
| 3485 | case R_PARISC_DIR14DR: |
| 3486 | case R_PARISC_DIR16F: |
| 3487 | case R_PARISC_DIR16WF: |
| 3488 | case R_PARISC_DIR16DF: |
| 3489 | { |
| 3490 | /* All DIR relocations are basically the same at this point, |
| 3491 | except that branch offsets need to be divided by four, and |
| 3492 | we need different field selectors. Note that we don't |
| 3493 | redirect absolute calls to local stubs. */ |
| 3494 | |
| 3495 | if (r_type == R_PARISC_DIR21L) |
| 3496 | value = hppa_field_adjust (value, addend, e_lrsel); |
| 3497 | else if (r_type == R_PARISC_DIR17F |
| 3498 | || r_type == R_PARISC_DIR16F |
| 3499 | || r_type == R_PARISC_DIR16WF |
| 3500 | || r_type == R_PARISC_DIR16DF |
| 3501 | || r_type == R_PARISC_DIR14F) |
| 3502 | value = hppa_field_adjust (value, addend, e_fsel); |
| 3503 | else |
| 3504 | value = hppa_field_adjust (value, addend, e_rrsel); |
| 3505 | |
| 3506 | if (r_type == R_PARISC_DIR17R || r_type == R_PARISC_DIR17F) |
| 3507 | /* All branches are implicitly shifted by 2 places. */ |
| 3508 | value >>= 2; |
| 3509 | |
| 3510 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); |
| 3511 | break; |
| 3512 | } |
| 3513 | |
| 3514 | case R_PARISC_PLTOFF21L: |
| 3515 | case R_PARISC_PLTOFF14R: |
| 3516 | case R_PARISC_PLTOFF14F: |
| 3517 | case R_PARISC_PLTOFF14WR: |
| 3518 | case R_PARISC_PLTOFF14DR: |
| 3519 | case R_PARISC_PLTOFF16F: |
| 3520 | case R_PARISC_PLTOFF16WF: |
| 3521 | case R_PARISC_PLTOFF16DF: |
| 3522 | { |
| 3523 | /* We want the value of the PLT offset for this symbol, not |
| 3524 | the symbol's actual address. Note that __gp may not point |
| 3525 | to the start of the DLT, so we have to compute the absolute |
| 3526 | address, then subtract out the value of __gp. */ |
| 3527 | value = (hh->plt_offset |
| 3528 | + hppa_info->plt_sec->output_offset |
| 3529 | + hppa_info->plt_sec->output_section->vma); |
| 3530 | value -= _bfd_get_gp_value (output_bfd); |
| 3531 | |
| 3532 | /* All PLTOFF relocations are basically the same at this point, |
| 3533 | except that we need different field selectors for the 21bit |
| 3534 | version vs the 14bit versions. */ |
| 3535 | if (r_type == R_PARISC_PLTOFF21L) |
| 3536 | value = hppa_field_adjust (value, addend, e_lrsel); |
| 3537 | else if (r_type == R_PARISC_PLTOFF14F |
| 3538 | || r_type == R_PARISC_PLTOFF16F |
| 3539 | || r_type == R_PARISC_PLTOFF16WF |
| 3540 | || r_type == R_PARISC_PLTOFF16DF) |
| 3541 | value = hppa_field_adjust (value, addend, e_fsel); |
| 3542 | else |
| 3543 | value = hppa_field_adjust (value, addend, e_rrsel); |
| 3544 | |
| 3545 | insn = elf_hppa_relocate_insn (insn, (int) value, r_type); |
| 3546 | break; |
| 3547 | } |
| 3548 | |
| 3549 | case R_PARISC_LTOFF_FPTR32: |
| 3550 | { |
| 3551 | /* We may still need to create the FPTR itself if it was for |
| 3552 | a local symbol. */ |
| 3553 | if (hh == NULL) |
| 3554 | { |
| 3555 | /* The first two words of an .opd entry are zero. */ |
| 3556 | memset (hppa_info->opd_sec->contents + hh->opd_offset, 0, 16); |
| 3557 | |
| 3558 | /* The next word is the address of the function. */ |
| 3559 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, |
| 3560 | (hppa_info->opd_sec->contents |
| 3561 | + hh->opd_offset + 16)); |
| 3562 | |
| 3563 | /* The last word is our local __gp value. */ |
| 3564 | value = _bfd_get_gp_value |
| 3565 | (hppa_info->opd_sec->output_section->owner); |
| 3566 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
| 3567 | hppa_info->opd_sec->contents + hh->opd_offset + 24); |
| 3568 | |
| 3569 | /* The DLT value is the address of the .opd entry. */ |
| 3570 | value = (hh->opd_offset |
| 3571 | + hppa_info->opd_sec->output_offset |
| 3572 | + hppa_info->opd_sec->output_section->vma); |
| 3573 | |
| 3574 | bfd_put_64 (hppa_info->dlt_sec->owner, |
| 3575 | value, |
| 3576 | hppa_info->dlt_sec->contents + hh->dlt_offset); |
| 3577 | } |
| 3578 | |
| 3579 | /* We want the value of the DLT offset for this symbol, not |
| 3580 | the symbol's actual address. Note that __gp may not point |
| 3581 | to the start of the DLT, so we have to compute the absolute |
| 3582 | address, then subtract out the value of __gp. */ |
| 3583 | value = (hh->dlt_offset |
| 3584 | + hppa_info->dlt_sec->output_offset |
| 3585 | + hppa_info->dlt_sec->output_section->vma); |
| 3586 | value -= _bfd_get_gp_value (output_bfd); |
| 3587 | bfd_put_32 (input_bfd, value, hit_data); |
| 3588 | return bfd_reloc_ok; |
| 3589 | } |
| 3590 | |
| 3591 | case R_PARISC_LTOFF_FPTR64: |
| 3592 | case R_PARISC_LTOFF_TP64: |
| 3593 | { |
| 3594 | /* We may still need to create the FPTR itself if it was for |
| 3595 | a local symbol. */ |
| 3596 | if (eh == NULL && r_type == R_PARISC_LTOFF_FPTR64) |
| 3597 | { |
| 3598 | /* The first two words of an .opd entry are zero. */ |
| 3599 | memset (hppa_info->opd_sec->contents + hh->opd_offset, 0, 16); |
| 3600 | |
| 3601 | /* The next word is the address of the function. */ |
| 3602 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, |
| 3603 | (hppa_info->opd_sec->contents |
| 3604 | + hh->opd_offset + 16)); |
| 3605 | |
| 3606 | /* The last word is our local __gp value. */ |
| 3607 | value = _bfd_get_gp_value |
| 3608 | (hppa_info->opd_sec->output_section->owner); |
| 3609 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
| 3610 | hppa_info->opd_sec->contents + hh->opd_offset + 24); |
| 3611 | |
| 3612 | /* The DLT value is the address of the .opd entry. */ |
| 3613 | value = (hh->opd_offset |
| 3614 | + hppa_info->opd_sec->output_offset |
| 3615 | + hppa_info->opd_sec->output_section->vma); |
| 3616 | |
| 3617 | bfd_put_64 (hppa_info->dlt_sec->owner, |
| 3618 | value, |
| 3619 | hppa_info->dlt_sec->contents + hh->dlt_offset); |
| 3620 | } |
| 3621 | |
| 3622 | /* We want the value of the DLT offset for this symbol, not |
| 3623 | the symbol's actual address. Note that __gp may not point |
| 3624 | to the start of the DLT, so we have to compute the absolute |
| 3625 | address, then subtract out the value of __gp. */ |
| 3626 | value = (hh->dlt_offset |
| 3627 | + hppa_info->dlt_sec->output_offset |
| 3628 | + hppa_info->dlt_sec->output_section->vma); |
| 3629 | value -= _bfd_get_gp_value (output_bfd); |
| 3630 | bfd_put_64 (input_bfd, value, hit_data); |
| 3631 | return bfd_reloc_ok; |
| 3632 | } |
| 3633 | |
| 3634 | case R_PARISC_DIR32: |
| 3635 | bfd_put_32 (input_bfd, value + addend, hit_data); |
| 3636 | return bfd_reloc_ok; |
| 3637 | |
| 3638 | case R_PARISC_DIR64: |
| 3639 | bfd_put_64 (input_bfd, value + addend, hit_data); |
| 3640 | return bfd_reloc_ok; |
| 3641 | |
| 3642 | case R_PARISC_GPREL64: |
| 3643 | /* Subtract out the global pointer value to make value a DLT |
| 3644 | relative address. */ |
| 3645 | value -= _bfd_get_gp_value (output_bfd); |
| 3646 | |
| 3647 | bfd_put_64 (input_bfd, value + addend, hit_data); |
| 3648 | return bfd_reloc_ok; |
| 3649 | |
| 3650 | case R_PARISC_LTOFF64: |
| 3651 | /* We want the value of the DLT offset for this symbol, not |
| 3652 | the symbol's actual address. Note that __gp may not point |
| 3653 | to the start of the DLT, so we have to compute the absolute |
| 3654 | address, then subtract out the value of __gp. */ |
| 3655 | value = (hh->dlt_offset |
| 3656 | + hppa_info->dlt_sec->output_offset |
| 3657 | + hppa_info->dlt_sec->output_section->vma); |
| 3658 | value -= _bfd_get_gp_value (output_bfd); |
| 3659 | |
| 3660 | bfd_put_64 (input_bfd, value + addend, hit_data); |
| 3661 | return bfd_reloc_ok; |
| 3662 | |
| 3663 | case R_PARISC_PCREL32: |
| 3664 | { |
| 3665 | /* If this is a call to a function defined in another dynamic |
| 3666 | library, then redirect the call to the local stub for this |
| 3667 | function. */ |
| 3668 | if (sym_sec == NULL || sym_sec->output_section == NULL) |
| 3669 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset |
| 3670 | + hppa_info->stub_sec->output_section->vma); |
| 3671 | |
| 3672 | /* Turn VALUE into a proper PC relative address. */ |
| 3673 | value -= (offset + input_section->output_offset |
| 3674 | + input_section->output_section->vma); |
| 3675 | |
| 3676 | value += addend; |
| 3677 | value -= 8; |
| 3678 | bfd_put_32 (input_bfd, value, hit_data); |
| 3679 | return bfd_reloc_ok; |
| 3680 | } |
| 3681 | |
| 3682 | case R_PARISC_PCREL64: |
| 3683 | { |
| 3684 | /* If this is a call to a function defined in another dynamic |
| 3685 | library, then redirect the call to the local stub for this |
| 3686 | function. */ |
| 3687 | if (sym_sec == NULL || sym_sec->output_section == NULL) |
| 3688 | value = (hh->stub_offset + hppa_info->stub_sec->output_offset |
| 3689 | + hppa_info->stub_sec->output_section->vma); |
| 3690 | |
| 3691 | /* Turn VALUE into a proper PC relative address. */ |
| 3692 | value -= (offset + input_section->output_offset |
| 3693 | + input_section->output_section->vma); |
| 3694 | |
| 3695 | value += addend; |
| 3696 | value -= 8; |
| 3697 | bfd_put_64 (input_bfd, value, hit_data); |
| 3698 | return bfd_reloc_ok; |
| 3699 | } |
| 3700 | |
| 3701 | case R_PARISC_FPTR64: |
| 3702 | { |
| 3703 | bfd_vma off; |
| 3704 | |
| 3705 | /* We may still need to create the FPTR itself if it was for |
| 3706 | a local symbol. */ |
| 3707 | if (hh == NULL) |
| 3708 | { |
| 3709 | bfd_vma *local_opd_offsets; |
| 3710 | |
| 3711 | if (local_offsets == NULL) |
| 3712 | abort (); |
| 3713 | |
| 3714 | local_opd_offsets = local_offsets + 2 * symtab_hdr->sh_info; |
| 3715 | off = local_opd_offsets[r_symndx]; |
| 3716 | |
| 3717 | /* The last bit records whether we've already initialised |
| 3718 | this local .opd entry. */ |
| 3719 | if ((off & 1) != 0) |
| 3720 | { |
| 3721 | BFD_ASSERT (off != (bfd_vma) -1); |
| 3722 | off &= ~1; |
| 3723 | } |
| 3724 | else |
| 3725 | { |
| 3726 | /* The first two words of an .opd entry are zero. */ |
| 3727 | memset (hppa_info->opd_sec->contents + off, 0, 16); |
| 3728 | |
| 3729 | /* The next word is the address of the function. */ |
| 3730 | bfd_put_64 (hppa_info->opd_sec->owner, value + addend, |
| 3731 | (hppa_info->opd_sec->contents + off + 16)); |
| 3732 | |
| 3733 | /* The last word is our local __gp value. */ |
| 3734 | value = _bfd_get_gp_value |
| 3735 | (hppa_info->opd_sec->output_section->owner); |
| 3736 | bfd_put_64 (hppa_info->opd_sec->owner, value, |
| 3737 | hppa_info->opd_sec->contents + off + 24); |
| 3738 | } |
| 3739 | } |
| 3740 | else |
| 3741 | off = hh->opd_offset; |
| 3742 | |
| 3743 | if (hh == NULL || hh->want_opd) |
| 3744 | /* We want the value of the OPD offset for this symbol. */ |
| 3745 | value = (off |
| 3746 | + hppa_info->opd_sec->output_offset |
| 3747 | + hppa_info->opd_sec->output_section->vma); |
| 3748 | else |
| 3749 | /* We want the address of the symbol. */ |
| 3750 | value += addend; |
| 3751 | |
| 3752 | bfd_put_64 (input_bfd, value, hit_data); |
| 3753 | return bfd_reloc_ok; |
| 3754 | } |
| 3755 | |
| 3756 | case R_PARISC_SECREL32: |
| 3757 | if (sym_sec) |
| 3758 | value -= sym_sec->output_section->vma; |
| 3759 | bfd_put_32 (input_bfd, value + addend, hit_data); |
| 3760 | return bfd_reloc_ok; |
| 3761 | |
| 3762 | case R_PARISC_SEGREL32: |
| 3763 | case R_PARISC_SEGREL64: |
| 3764 | { |
| 3765 | /* If this is the first SEGREL relocation, then initialize |
| 3766 | the segment base values. */ |
| 3767 | if (hppa_info->text_segment_base == (bfd_vma) -1) |
| 3768 | bfd_map_over_sections (output_bfd, elf_hppa_record_segment_addrs, |
| 3769 | hppa_info); |
| 3770 | |
| 3771 | /* VALUE holds the absolute address. We want to include the |
| 3772 | addend, then turn it into a segment relative address. |
| 3773 | |
| 3774 | The segment is derived from SYM_SEC. We assume that there are |
| 3775 | only two segments of note in the resulting executable/shlib. |
| 3776 | A readonly segment (.text) and a readwrite segment (.data). */ |
| 3777 | value += addend; |
| 3778 | |
| 3779 | if (sym_sec->flags & SEC_CODE) |
| 3780 | value -= hppa_info->text_segment_base; |
| 3781 | else |
| 3782 | value -= hppa_info->data_segment_base; |
| 3783 | |
| 3784 | if (r_type == R_PARISC_SEGREL32) |
| 3785 | bfd_put_32 (input_bfd, value, hit_data); |
| 3786 | else |
| 3787 | bfd_put_64 (input_bfd, value, hit_data); |
| 3788 | return bfd_reloc_ok; |
| 3789 | } |
| 3790 | |
| 3791 | /* Something we don't know how to handle. */ |
| 3792 | default: |
| 3793 | return bfd_reloc_notsupported; |
| 3794 | } |
| 3795 | |
| 3796 | /* Update the instruction word. */ |
| 3797 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); |
| 3798 | return bfd_reloc_ok; |
| 3799 | } |
| 3800 | |
| 3801 | /* Relocate an HPPA ELF section. */ |
| 3802 | |
| 3803 | static bfd_boolean |
| 3804 | elf64_hppa_relocate_section (bfd *output_bfd, |
| 3805 | struct bfd_link_info *info, |
| 3806 | bfd *input_bfd, |
| 3807 | asection *input_section, |
| 3808 | bfd_byte *contents, |
| 3809 | Elf_Internal_Rela *relocs, |
| 3810 | Elf_Internal_Sym *local_syms, |
| 3811 | asection **local_sections) |
| 3812 | { |
| 3813 | Elf_Internal_Shdr *symtab_hdr; |
| 3814 | Elf_Internal_Rela *rel; |
| 3815 | Elf_Internal_Rela *relend; |
| 3816 | struct elf64_hppa_link_hash_table *hppa_info; |
| 3817 | |
| 3818 | hppa_info = hppa_link_hash_table (info); |
| 3819 | if (hppa_info == NULL) |
| 3820 | return FALSE; |
| 3821 | |
| 3822 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3823 | |
| 3824 | rel = relocs; |
| 3825 | relend = relocs + input_section->reloc_count; |
| 3826 | for (; rel < relend; rel++) |
| 3827 | { |
| 3828 | int r_type; |
| 3829 | reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info); |
| 3830 | unsigned long r_symndx; |
| 3831 | struct elf_link_hash_entry *eh; |
| 3832 | Elf_Internal_Sym *sym; |
| 3833 | asection *sym_sec; |
| 3834 | bfd_vma relocation; |
| 3835 | bfd_reloc_status_type r; |
| 3836 | |
| 3837 | r_type = ELF_R_TYPE (rel->r_info); |
| 3838 | if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) |
| 3839 | { |
| 3840 | bfd_set_error (bfd_error_bad_value); |
| 3841 | return FALSE; |
| 3842 | } |
| 3843 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY |
| 3844 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) |
| 3845 | continue; |
| 3846 | |
| 3847 | /* This is a final link. */ |
| 3848 | r_symndx = ELF_R_SYM (rel->r_info); |
| 3849 | eh = NULL; |
| 3850 | sym = NULL; |
| 3851 | sym_sec = NULL; |
| 3852 | if (r_symndx < symtab_hdr->sh_info) |
| 3853 | { |
| 3854 | /* This is a local symbol, hh defaults to NULL. */ |
| 3855 | sym = local_syms + r_symndx; |
| 3856 | sym_sec = local_sections[r_symndx]; |
| 3857 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rel); |
| 3858 | } |
| 3859 | else |
| 3860 | { |
| 3861 | /* This is not a local symbol. */ |
| 3862 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
| 3863 | |
| 3864 | /* It seems this can happen with erroneous or unsupported |
| 3865 | input (mixing a.out and elf in an archive, for example.) */ |
| 3866 | if (sym_hashes == NULL) |
| 3867 | return FALSE; |
| 3868 | |
| 3869 | eh = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 3870 | |
| 3871 | if (info->wrap_hash != NULL |
| 3872 | && (input_section->flags & SEC_DEBUGGING) != 0) |
| 3873 | eh = ((struct elf_link_hash_entry *) |
| 3874 | unwrap_hash_lookup (info, input_bfd, &eh->root)); |
| 3875 | |
| 3876 | while (eh->root.type == bfd_link_hash_indirect |
| 3877 | || eh->root.type == bfd_link_hash_warning) |
| 3878 | eh = (struct elf_link_hash_entry *) eh->root.u.i.link; |
| 3879 | |
| 3880 | relocation = 0; |
| 3881 | if (eh->root.type == bfd_link_hash_defined |
| 3882 | || eh->root.type == bfd_link_hash_defweak) |
| 3883 | { |
| 3884 | sym_sec = eh->root.u.def.section; |
| 3885 | if (sym_sec != NULL |
| 3886 | && sym_sec->output_section != NULL) |
| 3887 | relocation = (eh->root.u.def.value |
| 3888 | + sym_sec->output_section->vma |
| 3889 | + sym_sec->output_offset); |
| 3890 | } |
| 3891 | else if (eh->root.type == bfd_link_hash_undefweak) |
| 3892 | ; |
| 3893 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
| 3894 | && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT) |
| 3895 | ; |
| 3896 | else if (!info->relocatable |
| 3897 | && elf_hppa_is_dynamic_loader_symbol (eh->root.root.string)) |
| 3898 | continue; |
| 3899 | else if (!info->relocatable) |
| 3900 | { |
| 3901 | bfd_boolean err; |
| 3902 | err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR |
| 3903 | || ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT); |
| 3904 | if (!info->callbacks->undefined_symbol (info, |
| 3905 | eh->root.root.string, |
| 3906 | input_bfd, |
| 3907 | input_section, |
| 3908 | rel->r_offset, err)) |
| 3909 | return FALSE; |
| 3910 | } |
| 3911 | |
| 3912 | if (!info->relocatable |
| 3913 | && relocation == 0 |
| 3914 | && eh->root.type != bfd_link_hash_defined |
| 3915 | && eh->root.type != bfd_link_hash_defweak |
| 3916 | && eh->root.type != bfd_link_hash_undefweak) |
| 3917 | { |
| 3918 | if (info->unresolved_syms_in_objects == RM_IGNORE |
| 3919 | && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT |
| 3920 | && eh->type == STT_PARISC_MILLI) |
| 3921 | { |
| 3922 | if (! info->callbacks->undefined_symbol |
| 3923 | (info, eh_name (eh), input_bfd, |
| 3924 | input_section, rel->r_offset, FALSE)) |
| 3925 | return FALSE; |
| 3926 | } |
| 3927 | } |
| 3928 | } |
| 3929 | |
| 3930 | if (sym_sec != NULL && discarded_section (sym_sec)) |
| 3931 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 3932 | rel, 1, relend, howto, 0, contents); |
| 3933 | |
| 3934 | if (info->relocatable) |
| 3935 | continue; |
| 3936 | |
| 3937 | r = elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, |
| 3938 | input_section, contents, |
| 3939 | relocation, info, sym_sec, |
| 3940 | eh); |
| 3941 | |
| 3942 | if (r != bfd_reloc_ok) |
| 3943 | { |
| 3944 | switch (r) |
| 3945 | { |
| 3946 | default: |
| 3947 | abort (); |
| 3948 | case bfd_reloc_overflow: |
| 3949 | { |
| 3950 | const char *sym_name; |
| 3951 | |
| 3952 | if (eh != NULL) |
| 3953 | sym_name = NULL; |
| 3954 | else |
| 3955 | { |
| 3956 | sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| 3957 | symtab_hdr->sh_link, |
| 3958 | sym->st_name); |
| 3959 | if (sym_name == NULL) |
| 3960 | return FALSE; |
| 3961 | if (*sym_name == '\0') |
| 3962 | sym_name = bfd_section_name (input_bfd, sym_sec); |
| 3963 | } |
| 3964 | |
| 3965 | if (!((*info->callbacks->reloc_overflow) |
| 3966 | (info, (eh ? &eh->root : NULL), sym_name, |
| 3967 | howto->name, (bfd_vma) 0, input_bfd, |
| 3968 | input_section, rel->r_offset))) |
| 3969 | return FALSE; |
| 3970 | } |
| 3971 | break; |
| 3972 | } |
| 3973 | } |
| 3974 | } |
| 3975 | return TRUE; |
| 3976 | } |
| 3977 | |
| 3978 | static const struct bfd_elf_special_section elf64_hppa_special_sections[] = |
| 3979 | { |
| 3980 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
| 3981 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
| 3982 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, |
| 3983 | { STRING_COMMA_LEN (".dlt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, |
| 3984 | { STRING_COMMA_LEN (".sdata"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, |
| 3985 | { STRING_COMMA_LEN (".sbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_PARISC_SHORT }, |
| 3986 | { STRING_COMMA_LEN (".tbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_HP_TLS }, |
| 3987 | { NULL, 0, 0, 0, 0 } |
| 3988 | }; |
| 3989 | |
| 3990 | /* The hash bucket size is the standard one, namely 4. */ |
| 3991 | |
| 3992 | const struct elf_size_info hppa64_elf_size_info = |
| 3993 | { |
| 3994 | sizeof (Elf64_External_Ehdr), |
| 3995 | sizeof (Elf64_External_Phdr), |
| 3996 | sizeof (Elf64_External_Shdr), |
| 3997 | sizeof (Elf64_External_Rel), |
| 3998 | sizeof (Elf64_External_Rela), |
| 3999 | sizeof (Elf64_External_Sym), |
| 4000 | sizeof (Elf64_External_Dyn), |
| 4001 | sizeof (Elf_External_Note), |
| 4002 | 4, |
| 4003 | 1, |
| 4004 | 64, 3, |
| 4005 | ELFCLASS64, EV_CURRENT, |
| 4006 | bfd_elf64_write_out_phdrs, |
| 4007 | bfd_elf64_write_shdrs_and_ehdr, |
| 4008 | bfd_elf64_checksum_contents, |
| 4009 | bfd_elf64_write_relocs, |
| 4010 | bfd_elf64_swap_symbol_in, |
| 4011 | bfd_elf64_swap_symbol_out, |
| 4012 | bfd_elf64_slurp_reloc_table, |
| 4013 | bfd_elf64_slurp_symbol_table, |
| 4014 | bfd_elf64_swap_dyn_in, |
| 4015 | bfd_elf64_swap_dyn_out, |
| 4016 | bfd_elf64_swap_reloc_in, |
| 4017 | bfd_elf64_swap_reloc_out, |
| 4018 | bfd_elf64_swap_reloca_in, |
| 4019 | bfd_elf64_swap_reloca_out |
| 4020 | }; |
| 4021 | |
| 4022 | #define TARGET_BIG_SYM hppa_elf64_vec |
| 4023 | #define TARGET_BIG_NAME "elf64-hppa" |
| 4024 | #define ELF_ARCH bfd_arch_hppa |
| 4025 | #define ELF_TARGET_ID HPPA64_ELF_DATA |
| 4026 | #define ELF_MACHINE_CODE EM_PARISC |
| 4027 | /* This is not strictly correct. The maximum page size for PA2.0 is |
| 4028 | 64M. But everything still uses 4k. */ |
| 4029 | #define ELF_MAXPAGESIZE 0x1000 |
| 4030 | #define ELF_OSABI ELFOSABI_HPUX |
| 4031 | |
| 4032 | #define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup |
| 4033 | #define bfd_elf64_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup |
| 4034 | #define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name |
| 4035 | #define elf_info_to_howto elf_hppa_info_to_howto |
| 4036 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel |
| 4037 | |
| 4038 | #define elf_backend_section_from_shdr elf64_hppa_section_from_shdr |
| 4039 | #define elf_backend_object_p elf64_hppa_object_p |
| 4040 | #define elf_backend_final_write_processing \ |
| 4041 | elf_hppa_final_write_processing |
| 4042 | #define elf_backend_fake_sections elf_hppa_fake_sections |
| 4043 | #define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook |
| 4044 | |
| 4045 | #define elf_backend_relocate_section elf_hppa_relocate_section |
| 4046 | |
| 4047 | #define bfd_elf64_bfd_final_link elf_hppa_final_link |
| 4048 | |
| 4049 | #define elf_backend_create_dynamic_sections \ |
| 4050 | elf64_hppa_create_dynamic_sections |
| 4051 | #define elf_backend_post_process_headers elf64_hppa_post_process_headers |
| 4052 | |
| 4053 | #define elf_backend_omit_section_dynsym \ |
| 4054 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) |
| 4055 | #define elf_backend_adjust_dynamic_symbol \ |
| 4056 | elf64_hppa_adjust_dynamic_symbol |
| 4057 | |
| 4058 | #define elf_backend_size_dynamic_sections \ |
| 4059 | elf64_hppa_size_dynamic_sections |
| 4060 | |
| 4061 | #define elf_backend_finish_dynamic_symbol \ |
| 4062 | elf64_hppa_finish_dynamic_symbol |
| 4063 | #define elf_backend_finish_dynamic_sections \ |
| 4064 | elf64_hppa_finish_dynamic_sections |
| 4065 | #define elf_backend_grok_prstatus elf64_hppa_grok_prstatus |
| 4066 | #define elf_backend_grok_psinfo elf64_hppa_grok_psinfo |
| 4067 | |
| 4068 | /* Stuff for the BFD linker: */ |
| 4069 | #define bfd_elf64_bfd_link_hash_table_create \ |
| 4070 | elf64_hppa_hash_table_create |
| 4071 | |
| 4072 | #define elf_backend_check_relocs \ |
| 4073 | elf64_hppa_check_relocs |
| 4074 | |
| 4075 | #define elf_backend_size_info \ |
| 4076 | hppa64_elf_size_info |
| 4077 | |
| 4078 | #define elf_backend_additional_program_headers \ |
| 4079 | elf64_hppa_additional_program_headers |
| 4080 | |
| 4081 | #define elf_backend_modify_segment_map \ |
| 4082 | elf64_hppa_modify_segment_map |
| 4083 | |
| 4084 | #define elf_backend_link_output_symbol_hook \ |
| 4085 | elf64_hppa_link_output_symbol_hook |
| 4086 | |
| 4087 | #define elf_backend_want_got_plt 0 |
| 4088 | #define elf_backend_plt_readonly 0 |
| 4089 | #define elf_backend_want_plt_sym 0 |
| 4090 | #define elf_backend_got_header_size 0 |
| 4091 | #define elf_backend_type_change_ok TRUE |
| 4092 | #define elf_backend_get_symbol_type elf64_hppa_elf_get_symbol_type |
| 4093 | #define elf_backend_reloc_type_class elf64_hppa_reloc_type_class |
| 4094 | #define elf_backend_rela_normal 1 |
| 4095 | #define elf_backend_special_sections elf64_hppa_special_sections |
| 4096 | #define elf_backend_action_discarded elf_hppa_action_discarded |
| 4097 | #define elf_backend_section_from_phdr elf64_hppa_section_from_phdr |
| 4098 | |
| 4099 | #define elf64_bed elf64_hppa_hpux_bed |
| 4100 | |
| 4101 | #include "elf64-target.h" |
| 4102 | |
| 4103 | #undef TARGET_BIG_SYM |
| 4104 | #define TARGET_BIG_SYM hppa_elf64_linux_vec |
| 4105 | #undef TARGET_BIG_NAME |
| 4106 | #define TARGET_BIG_NAME "elf64-hppa-linux" |
| 4107 | #undef ELF_OSABI |
| 4108 | #define ELF_OSABI ELFOSABI_GNU |
| 4109 | #undef elf64_bed |
| 4110 | #define elf64_bed elf64_hppa_linux_bed |
| 4111 | |
| 4112 | #include "elf64-target.h" |