| 1 | /* IA-64 support for OpenVMS |
| 2 | Copyright (C) 1998-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "bfd.h" |
| 23 | #include "libbfd.h" |
| 24 | #include "elf-bfd.h" |
| 25 | #include "opcode/ia64.h" |
| 26 | #include "elf/ia64.h" |
| 27 | #include "objalloc.h" |
| 28 | #include "hashtab.h" |
| 29 | #include "elfxx-ia64.h" |
| 30 | #include "vms.h" |
| 31 | #include "bfdver.h" |
| 32 | |
| 33 | /* THE RULES for all the stuff the linker creates -- |
| 34 | |
| 35 | GOT Entries created in response to LTOFF or LTOFF_FPTR |
| 36 | relocations. Dynamic relocs created for dynamic |
| 37 | symbols in an application; REL relocs for locals |
| 38 | in a shared library. |
| 39 | |
| 40 | FPTR The canonical function descriptor. Created for local |
| 41 | symbols in applications. Descriptors for dynamic symbols |
| 42 | and local symbols in shared libraries are created by |
| 43 | ld.so. Thus there are no dynamic relocs against these |
| 44 | objects. The FPTR relocs for such _are_ passed through |
| 45 | to the dynamic relocation tables. |
| 46 | |
| 47 | FULL_PLT Created for a PCREL21B relocation against a dynamic symbol. |
| 48 | Requires the creation of a PLTOFF entry. This does not |
| 49 | require any dynamic relocations. |
| 50 | |
| 51 | PLTOFF Created by PLTOFF relocations. For local symbols, this |
| 52 | is an alternate function descriptor, and in shared libraries |
| 53 | requires two REL relocations. Note that this cannot be |
| 54 | transformed into an FPTR relocation, since it must be in |
| 55 | range of the GP. For dynamic symbols, this is a function |
| 56 | descriptor. */ |
| 57 | |
| 58 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
| 59 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
| 60 | |
| 61 | /* In dynamically (linker-) created sections, we generally need to keep track |
| 62 | of the place a symbol or expression got allocated to. This is done via hash |
| 63 | tables that store entries of the following type. */ |
| 64 | |
| 65 | struct elf64_ia64_dyn_sym_info |
| 66 | { |
| 67 | /* The addend for which this entry is relevant. */ |
| 68 | bfd_vma addend; |
| 69 | |
| 70 | bfd_vma got_offset; |
| 71 | bfd_vma fptr_offset; |
| 72 | bfd_vma pltoff_offset; |
| 73 | bfd_vma plt_offset; |
| 74 | bfd_vma plt2_offset; |
| 75 | |
| 76 | /* The symbol table entry, if any, that this was derived from. */ |
| 77 | struct elf_link_hash_entry *h; |
| 78 | |
| 79 | /* Used to count non-got, non-plt relocations for delayed sizing |
| 80 | of relocation sections. */ |
| 81 | struct elf64_ia64_dyn_reloc_entry |
| 82 | { |
| 83 | struct elf64_ia64_dyn_reloc_entry *next; |
| 84 | asection *srel; |
| 85 | int type; |
| 86 | int count; |
| 87 | } *reloc_entries; |
| 88 | |
| 89 | /* TRUE when the section contents have been updated. */ |
| 90 | unsigned got_done : 1; |
| 91 | unsigned fptr_done : 1; |
| 92 | unsigned pltoff_done : 1; |
| 93 | |
| 94 | /* TRUE for the different kinds of linker data we want created. */ |
| 95 | unsigned want_got : 1; |
| 96 | unsigned want_gotx : 1; |
| 97 | unsigned want_fptr : 1; |
| 98 | unsigned want_ltoff_fptr : 1; |
| 99 | unsigned want_plt : 1; /* A MIN_PLT entry. */ |
| 100 | unsigned want_plt2 : 1; /* A FULL_PLT. */ |
| 101 | unsigned want_pltoff : 1; |
| 102 | }; |
| 103 | |
| 104 | struct elf64_ia64_local_hash_entry |
| 105 | { |
| 106 | int id; |
| 107 | unsigned int r_sym; |
| 108 | /* The number of elements in elf64_ia64_dyn_sym_info array. */ |
| 109 | unsigned int count; |
| 110 | /* The number of sorted elements in elf64_ia64_dyn_sym_info array. */ |
| 111 | unsigned int sorted_count; |
| 112 | /* The size of elf64_ia64_dyn_sym_info array. */ |
| 113 | unsigned int size; |
| 114 | /* The array of elf64_ia64_dyn_sym_info. */ |
| 115 | struct elf64_ia64_dyn_sym_info *info; |
| 116 | |
| 117 | /* TRUE if this hash entry's addends was translated for |
| 118 | SHF_MERGE optimization. */ |
| 119 | unsigned sec_merge_done : 1; |
| 120 | }; |
| 121 | |
| 122 | struct elf64_ia64_link_hash_entry |
| 123 | { |
| 124 | struct elf_link_hash_entry root; |
| 125 | |
| 126 | /* Set if this symbol is defined in a shared library. |
| 127 | We can't use root.u.def.section->owner as the symbol is an absolute |
| 128 | symbol. */ |
| 129 | bfd *shl; |
| 130 | |
| 131 | /* The number of elements in elf64_ia64_dyn_sym_info array. */ |
| 132 | unsigned int count; |
| 133 | /* The number of sorted elements in elf64_ia64_dyn_sym_info array. */ |
| 134 | unsigned int sorted_count; |
| 135 | /* The size of elf64_ia64_dyn_sym_info array. */ |
| 136 | unsigned int size; |
| 137 | /* The array of elf64_ia64_dyn_sym_info. */ |
| 138 | struct elf64_ia64_dyn_sym_info *info; |
| 139 | }; |
| 140 | |
| 141 | struct elf64_ia64_link_hash_table |
| 142 | { |
| 143 | /* The main hash table. */ |
| 144 | struct elf_link_hash_table root; |
| 145 | |
| 146 | asection *fptr_sec; /* Function descriptor table (or NULL). */ |
| 147 | asection *rel_fptr_sec; /* Dynamic relocation section for same. */ |
| 148 | asection *pltoff_sec; /* Private descriptors for plt (or NULL). */ |
| 149 | asection *fixups_sec; /* Fixups section. */ |
| 150 | asection *transfer_sec; /* Transfer vector section. */ |
| 151 | asection *note_sec; /* .note section. */ |
| 152 | |
| 153 | /* There are maybe R_IA64_GPREL22 relocations, including those |
| 154 | optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT |
| 155 | sections. We need to record those sections so that we can choose |
| 156 | a proper GP to cover all R_IA64_GPREL22 relocations. */ |
| 157 | asection *max_short_sec; /* Maximum short output section. */ |
| 158 | bfd_vma max_short_offset; /* Maximum short offset. */ |
| 159 | asection *min_short_sec; /* Minimum short output section. */ |
| 160 | bfd_vma min_short_offset; /* Minimum short offset. */ |
| 161 | |
| 162 | htab_t loc_hash_table; |
| 163 | void *loc_hash_memory; |
| 164 | }; |
| 165 | |
| 166 | struct elf64_ia64_allocate_data |
| 167 | { |
| 168 | struct bfd_link_info *info; |
| 169 | bfd_size_type ofs; |
| 170 | }; |
| 171 | |
| 172 | #define elf64_ia64_hash_table(p) \ |
| 173 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 174 | == IA64_ELF_DATA ? ((struct elf64_ia64_link_hash_table *) ((p)->hash)) : NULL) |
| 175 | |
| 176 | struct elf64_ia64_vms_obj_tdata |
| 177 | { |
| 178 | struct elf_obj_tdata root; |
| 179 | |
| 180 | /* Ident for shared library. */ |
| 181 | bfd_uint64_t ident; |
| 182 | |
| 183 | /* Used only during link: offset in the .fixups section for this bfd. */ |
| 184 | bfd_vma fixups_off; |
| 185 | |
| 186 | /* Max number of shared libraries. */ |
| 187 | unsigned int needed_count; |
| 188 | }; |
| 189 | |
| 190 | #define elf_ia64_vms_tdata(abfd) \ |
| 191 | ((struct elf64_ia64_vms_obj_tdata *)((abfd)->tdata.any)) |
| 192 | #define elf_ia64_vms_ident(abfd) (elf_ia64_vms_tdata(abfd)->ident) |
| 193 | |
| 194 | struct elf64_vms_transfer |
| 195 | { |
| 196 | unsigned char size[4]; |
| 197 | unsigned char spare[4]; |
| 198 | unsigned char tfradr1[8]; |
| 199 | unsigned char tfradr2[8]; |
| 200 | unsigned char tfradr3[8]; |
| 201 | unsigned char tfradr4[8]; |
| 202 | unsigned char tfradr5[8]; |
| 203 | |
| 204 | /* Local function descriptor for tfr3. */ |
| 205 | unsigned char tfr3_func[8]; |
| 206 | unsigned char tfr3_gp[8]; |
| 207 | }; |
| 208 | |
| 209 | typedef struct |
| 210 | { |
| 211 | Elf64_External_Ehdr ehdr; |
| 212 | unsigned char vms_needed_count[8]; |
| 213 | } Elf64_External_VMS_Ehdr; |
| 214 | |
| 215 | static struct elf64_ia64_dyn_sym_info * get_dyn_sym_info |
| 216 | (struct elf64_ia64_link_hash_table *, |
| 217 | struct elf_link_hash_entry *, |
| 218 | bfd *, const Elf_Internal_Rela *, bfd_boolean); |
| 219 | static bfd_boolean elf64_ia64_dynamic_symbol_p |
| 220 | (struct elf_link_hash_entry *); |
| 221 | static bfd_boolean elf64_ia64_choose_gp |
| 222 | (bfd *, struct bfd_link_info *, bfd_boolean); |
| 223 | static void elf64_ia64_dyn_sym_traverse |
| 224 | (struct elf64_ia64_link_hash_table *, |
| 225 | bfd_boolean (*) (struct elf64_ia64_dyn_sym_info *, void *), |
| 226 | void *); |
| 227 | static bfd_boolean allocate_global_data_got |
| 228 | (struct elf64_ia64_dyn_sym_info *, void *); |
| 229 | static bfd_boolean allocate_global_fptr_got |
| 230 | (struct elf64_ia64_dyn_sym_info *, void *); |
| 231 | static bfd_boolean allocate_local_got |
| 232 | (struct elf64_ia64_dyn_sym_info *, void *); |
| 233 | static bfd_boolean allocate_dynrel_entries |
| 234 | (struct elf64_ia64_dyn_sym_info *, void *); |
| 235 | static asection *get_pltoff |
| 236 | (bfd *, struct elf64_ia64_link_hash_table *); |
| 237 | static asection *get_got |
| 238 | (bfd *, struct elf64_ia64_link_hash_table *); |
| 239 | |
| 240 | |
| 241 | /* Given a ELF reloc, return the matching HOWTO structure. */ |
| 242 | |
| 243 | static bfd_boolean |
| 244 | elf64_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
| 245 | arelent *bfd_reloc, |
| 246 | Elf_Internal_Rela *elf_reloc) |
| 247 | { |
| 248 | unsigned int r_type = ELF32_R_TYPE (elf_reloc->r_info); |
| 249 | |
| 250 | bfd_reloc->howto = ia64_elf_lookup_howto (r_type); |
| 251 | if (bfd_reloc->howto == NULL) |
| 252 | { |
| 253 | /* xgettext:c-format */ |
| 254 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
| 255 | abfd, r_type); |
| 256 | bfd_set_error (bfd_error_bad_value); |
| 257 | return FALSE; |
| 258 | } |
| 259 | |
| 260 | return TRUE; |
| 261 | } |
| 262 | |
| 263 | |
| 264 | #define PLT_FULL_ENTRY_SIZE (2 * 16) |
| 265 | |
| 266 | static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = |
| 267 | { |
| 268 | 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ |
| 269 | 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ |
| 270 | 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ |
| 271 | 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ |
| 272 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ |
| 273 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ |
| 274 | }; |
| 275 | |
| 276 | static const bfd_byte oor_brl[16] = |
| 277 | { |
| 278 | 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ |
| 279 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;;*/ |
| 280 | 0x00, 0x00, 0x00, 0xc0 |
| 281 | }; |
| 282 | |
| 283 | |
| 284 | /* These functions do relaxation for IA-64 ELF. */ |
| 285 | |
| 286 | /* Rename some of the generic section flags to better document how they |
| 287 | are used here. */ |
| 288 | #define skip_relax_pass_0 sec_flg0 |
| 289 | #define skip_relax_pass_1 sec_flg1 |
| 290 | |
| 291 | static void |
| 292 | elf64_ia64_update_short_info (asection *sec, bfd_vma offset, |
| 293 | struct elf64_ia64_link_hash_table *ia64_info) |
| 294 | { |
| 295 | /* Skip ABS and SHF_IA_64_SHORT sections. */ |
| 296 | if (sec == bfd_abs_section_ptr |
| 297 | || (sec->flags & SEC_SMALL_DATA) != 0) |
| 298 | return; |
| 299 | |
| 300 | if (!ia64_info->min_short_sec) |
| 301 | { |
| 302 | ia64_info->max_short_sec = sec; |
| 303 | ia64_info->max_short_offset = offset; |
| 304 | ia64_info->min_short_sec = sec; |
| 305 | ia64_info->min_short_offset = offset; |
| 306 | } |
| 307 | else if (sec == ia64_info->max_short_sec |
| 308 | && offset > ia64_info->max_short_offset) |
| 309 | ia64_info->max_short_offset = offset; |
| 310 | else if (sec == ia64_info->min_short_sec |
| 311 | && offset < ia64_info->min_short_offset) |
| 312 | ia64_info->min_short_offset = offset; |
| 313 | else if (sec->output_section->vma |
| 314 | > ia64_info->max_short_sec->vma) |
| 315 | { |
| 316 | ia64_info->max_short_sec = sec; |
| 317 | ia64_info->max_short_offset = offset; |
| 318 | } |
| 319 | else if (sec->output_section->vma |
| 320 | < ia64_info->min_short_sec->vma) |
| 321 | { |
| 322 | ia64_info->min_short_sec = sec; |
| 323 | ia64_info->min_short_offset = offset; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | /* Use a two passes algorithm. In the first pass, branches are relaxed |
| 328 | (which may increase the size of the section). In the second pass, |
| 329 | the other relaxations are done. |
| 330 | */ |
| 331 | |
| 332 | static bfd_boolean |
| 333 | elf64_ia64_relax_section (bfd *abfd, asection *sec, |
| 334 | struct bfd_link_info *link_info, |
| 335 | bfd_boolean *again) |
| 336 | { |
| 337 | struct one_fixup |
| 338 | { |
| 339 | struct one_fixup *next; |
| 340 | asection *tsec; |
| 341 | bfd_vma toff; |
| 342 | bfd_vma trampoff; |
| 343 | }; |
| 344 | |
| 345 | Elf_Internal_Shdr *symtab_hdr; |
| 346 | Elf_Internal_Rela *internal_relocs; |
| 347 | Elf_Internal_Rela *irel, *irelend; |
| 348 | bfd_byte *contents; |
| 349 | Elf_Internal_Sym *isymbuf = NULL; |
| 350 | struct elf64_ia64_link_hash_table *ia64_info; |
| 351 | struct one_fixup *fixups = NULL; |
| 352 | bfd_boolean changed_contents = FALSE; |
| 353 | bfd_boolean changed_relocs = FALSE; |
| 354 | bfd_boolean skip_relax_pass_0 = TRUE; |
| 355 | bfd_boolean skip_relax_pass_1 = TRUE; |
| 356 | bfd_vma gp = 0; |
| 357 | |
| 358 | /* Assume we're not going to change any sizes, and we'll only need |
| 359 | one pass. */ |
| 360 | *again = FALSE; |
| 361 | |
| 362 | if (bfd_link_relocatable (link_info)) |
| 363 | (*link_info->callbacks->einfo) |
| 364 | (_("%P%F: --relax and -r may not be used together\n")); |
| 365 | |
| 366 | /* Don't even try to relax for non-ELF outputs. */ |
| 367 | if (!is_elf_hash_table (link_info->hash)) |
| 368 | return FALSE; |
| 369 | |
| 370 | /* Nothing to do if there are no relocations or there is no need for |
| 371 | the current pass. */ |
| 372 | if ((sec->flags & SEC_RELOC) == 0 |
| 373 | || sec->reloc_count == 0 |
| 374 | || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) |
| 375 | || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) |
| 376 | return TRUE; |
| 377 | |
| 378 | ia64_info = elf64_ia64_hash_table (link_info); |
| 379 | if (ia64_info == NULL) |
| 380 | return FALSE; |
| 381 | |
| 382 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 383 | |
| 384 | /* Load the relocations for this section. */ |
| 385 | internal_relocs = (_bfd_elf_link_read_relocs |
| 386 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
| 387 | link_info->keep_memory)); |
| 388 | if (internal_relocs == NULL) |
| 389 | return FALSE; |
| 390 | |
| 391 | irelend = internal_relocs + sec->reloc_count; |
| 392 | |
| 393 | /* Get the section contents. */ |
| 394 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 395 | contents = elf_section_data (sec)->this_hdr.contents; |
| 396 | else |
| 397 | { |
| 398 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
| 399 | goto error_return; |
| 400 | } |
| 401 | |
| 402 | for (irel = internal_relocs; irel < irelend; irel++) |
| 403 | { |
| 404 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); |
| 405 | bfd_vma symaddr, reladdr, trampoff, toff, roff; |
| 406 | asection *tsec; |
| 407 | struct one_fixup *f; |
| 408 | bfd_size_type amt; |
| 409 | bfd_boolean is_branch; |
| 410 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 411 | |
| 412 | switch (r_type) |
| 413 | { |
| 414 | case R_IA64_PCREL21B: |
| 415 | case R_IA64_PCREL21BI: |
| 416 | case R_IA64_PCREL21M: |
| 417 | case R_IA64_PCREL21F: |
| 418 | /* In pass 1, all br relaxations are done. We can skip it. */ |
| 419 | if (link_info->relax_pass == 1) |
| 420 | continue; |
| 421 | skip_relax_pass_0 = FALSE; |
| 422 | is_branch = TRUE; |
| 423 | break; |
| 424 | |
| 425 | case R_IA64_PCREL60B: |
| 426 | /* We can't optimize brl to br in pass 0 since br relaxations |
| 427 | will increase the code size. Defer it to pass 1. */ |
| 428 | if (link_info->relax_pass == 0) |
| 429 | { |
| 430 | skip_relax_pass_1 = FALSE; |
| 431 | continue; |
| 432 | } |
| 433 | is_branch = TRUE; |
| 434 | break; |
| 435 | |
| 436 | case R_IA64_GPREL22: |
| 437 | /* Update max_short_sec/min_short_sec. */ |
| 438 | |
| 439 | case R_IA64_LTOFF22X: |
| 440 | case R_IA64_LDXMOV: |
| 441 | /* We can't relax ldx/mov in pass 0 since br relaxations will |
| 442 | increase the code size. Defer it to pass 1. */ |
| 443 | if (link_info->relax_pass == 0) |
| 444 | { |
| 445 | skip_relax_pass_1 = FALSE; |
| 446 | continue; |
| 447 | } |
| 448 | is_branch = FALSE; |
| 449 | break; |
| 450 | |
| 451 | default: |
| 452 | continue; |
| 453 | } |
| 454 | |
| 455 | /* Get the value of the symbol referred to by the reloc. */ |
| 456 | if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 457 | { |
| 458 | /* A local symbol. */ |
| 459 | Elf_Internal_Sym *isym; |
| 460 | |
| 461 | /* Read this BFD's local symbols. */ |
| 462 | if (isymbuf == NULL) |
| 463 | { |
| 464 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
| 465 | if (isymbuf == NULL) |
| 466 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
| 467 | symtab_hdr->sh_info, 0, |
| 468 | NULL, NULL, NULL); |
| 469 | if (isymbuf == 0) |
| 470 | goto error_return; |
| 471 | } |
| 472 | |
| 473 | isym = isymbuf + ELF64_R_SYM (irel->r_info); |
| 474 | if (isym->st_shndx == SHN_UNDEF) |
| 475 | continue; /* We can't do anything with undefined symbols. */ |
| 476 | else if (isym->st_shndx == SHN_ABS) |
| 477 | tsec = bfd_abs_section_ptr; |
| 478 | else if (isym->st_shndx == SHN_COMMON) |
| 479 | tsec = bfd_com_section_ptr; |
| 480 | else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) |
| 481 | tsec = bfd_com_section_ptr; |
| 482 | else |
| 483 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 484 | |
| 485 | toff = isym->st_value; |
| 486 | dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); |
| 487 | } |
| 488 | else |
| 489 | { |
| 490 | unsigned long indx; |
| 491 | struct elf_link_hash_entry *h; |
| 492 | |
| 493 | indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 494 | h = elf_sym_hashes (abfd)[indx]; |
| 495 | BFD_ASSERT (h != NULL); |
| 496 | |
| 497 | while (h->root.type == bfd_link_hash_indirect |
| 498 | || h->root.type == bfd_link_hash_warning) |
| 499 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 500 | |
| 501 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); |
| 502 | |
| 503 | /* For branches to dynamic symbols, we're interested instead |
| 504 | in a branch to the PLT entry. */ |
| 505 | if (is_branch && dyn_i && dyn_i->want_plt2) |
| 506 | { |
| 507 | /* Internal branches shouldn't be sent to the PLT. |
| 508 | Leave this for now and we'll give an error later. */ |
| 509 | if (r_type != R_IA64_PCREL21B) |
| 510 | continue; |
| 511 | |
| 512 | tsec = ia64_info->root.splt; |
| 513 | toff = dyn_i->plt2_offset; |
| 514 | BFD_ASSERT (irel->r_addend == 0); |
| 515 | } |
| 516 | |
| 517 | /* Can't do anything else with dynamic symbols. */ |
| 518 | else if (elf64_ia64_dynamic_symbol_p (h)) |
| 519 | continue; |
| 520 | |
| 521 | else |
| 522 | { |
| 523 | /* We can't do anything with undefined symbols. */ |
| 524 | if (h->root.type == bfd_link_hash_undefined |
| 525 | || h->root.type == bfd_link_hash_undefweak) |
| 526 | continue; |
| 527 | |
| 528 | tsec = h->root.u.def.section; |
| 529 | toff = h->root.u.def.value; |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | toff += irel->r_addend; |
| 534 | |
| 535 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
| 536 | |
| 537 | roff = irel->r_offset; |
| 538 | |
| 539 | if (is_branch) |
| 540 | { |
| 541 | bfd_signed_vma offset; |
| 542 | |
| 543 | reladdr = (sec->output_section->vma |
| 544 | + sec->output_offset |
| 545 | + roff) & (bfd_vma) -4; |
| 546 | |
| 547 | /* The .plt section is aligned at 32byte and the .text section |
| 548 | is aligned at 64byte. The .text section is right after the |
| 549 | .plt section. After the first relaxation pass, linker may |
| 550 | increase the gap between the .plt and .text sections up |
| 551 | to 32byte. We assume linker will always insert 32byte |
| 552 | between the .plt and .text sections after the first |
| 553 | relaxation pass. */ |
| 554 | if (tsec == ia64_info->root.splt) |
| 555 | offset = -0x1000000 + 32; |
| 556 | else |
| 557 | offset = -0x1000000; |
| 558 | |
| 559 | /* If the branch is in range, no need to do anything. */ |
| 560 | if ((bfd_signed_vma) (symaddr - reladdr) >= offset |
| 561 | && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) |
| 562 | { |
| 563 | /* If the 60-bit branch is in 21-bit range, optimize it. */ |
| 564 | if (r_type == R_IA64_PCREL60B) |
| 565 | { |
| 566 | ia64_elf_relax_brl (contents, roff); |
| 567 | |
| 568 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 569 | R_IA64_PCREL21B); |
| 570 | |
| 571 | /* If the original relocation offset points to slot |
| 572 | 1, change it to slot 2. */ |
| 573 | if ((irel->r_offset & 3) == 1) |
| 574 | irel->r_offset += 1; |
| 575 | } |
| 576 | |
| 577 | continue; |
| 578 | } |
| 579 | else if (r_type == R_IA64_PCREL60B) |
| 580 | continue; |
| 581 | else if (ia64_elf_relax_br (contents, roff)) |
| 582 | { |
| 583 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 584 | R_IA64_PCREL60B); |
| 585 | |
| 586 | /* Make the relocation offset point to slot 1. */ |
| 587 | irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; |
| 588 | continue; |
| 589 | } |
| 590 | |
| 591 | /* We can't put a trampoline in a .init/.fini section. Issue |
| 592 | an error. */ |
| 593 | if (strcmp (sec->output_section->name, ".init") == 0 |
| 594 | || strcmp (sec->output_section->name, ".fini") == 0) |
| 595 | { |
| 596 | _bfd_error_handler |
| 597 | /* xgettext:c-format */ |
| 598 | (_("%pB: can't relax br at %#" PRIx64 " in section `%pA';" |
| 599 | " please use brl or indirect branch"), |
| 600 | sec->owner, (uint64_t) roff, sec); |
| 601 | bfd_set_error (bfd_error_bad_value); |
| 602 | goto error_return; |
| 603 | } |
| 604 | |
| 605 | /* If the branch and target are in the same section, you've |
| 606 | got one honking big section and we can't help you unless |
| 607 | you are branching backwards. You'll get an error message |
| 608 | later. */ |
| 609 | if (tsec == sec && toff > roff) |
| 610 | continue; |
| 611 | |
| 612 | /* Look for an existing fixup to this address. */ |
| 613 | for (f = fixups; f ; f = f->next) |
| 614 | if (f->tsec == tsec && f->toff == toff) |
| 615 | break; |
| 616 | |
| 617 | if (f == NULL) |
| 618 | { |
| 619 | /* Two alternatives: If it's a branch to a PLT entry, we can |
| 620 | make a copy of the FULL_PLT entry. Otherwise, we'll have |
| 621 | to use a `brl' insn to get where we're going. */ |
| 622 | |
| 623 | size_t size; |
| 624 | |
| 625 | if (tsec == ia64_info->root.splt) |
| 626 | size = sizeof (plt_full_entry); |
| 627 | else |
| 628 | size = sizeof (oor_brl); |
| 629 | |
| 630 | /* Resize the current section to make room for the new branch. */ |
| 631 | trampoff = (sec->size + 15) & (bfd_vma) -16; |
| 632 | |
| 633 | /* If trampoline is out of range, there is nothing we |
| 634 | can do. */ |
| 635 | offset = trampoff - (roff & (bfd_vma) -4); |
| 636 | if (offset < -0x1000000 || offset > 0x0FFFFF0) |
| 637 | continue; |
| 638 | |
| 639 | amt = trampoff + size; |
| 640 | contents = (bfd_byte *) bfd_realloc (contents, amt); |
| 641 | if (contents == NULL) |
| 642 | goto error_return; |
| 643 | sec->size = amt; |
| 644 | |
| 645 | if (tsec == ia64_info->root.splt) |
| 646 | { |
| 647 | memcpy (contents + trampoff, plt_full_entry, size); |
| 648 | |
| 649 | /* Hijack the old relocation for use as the PLTOFF reloc. */ |
| 650 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 651 | R_IA64_PLTOFF22); |
| 652 | irel->r_offset = trampoff; |
| 653 | } |
| 654 | else |
| 655 | { |
| 656 | memcpy (contents + trampoff, oor_brl, size); |
| 657 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 658 | R_IA64_PCREL60B); |
| 659 | irel->r_offset = trampoff + 2; |
| 660 | } |
| 661 | |
| 662 | /* Record the fixup so we don't do it again this section. */ |
| 663 | f = (struct one_fixup *) |
| 664 | bfd_malloc ((bfd_size_type) sizeof (*f)); |
| 665 | f->next = fixups; |
| 666 | f->tsec = tsec; |
| 667 | f->toff = toff; |
| 668 | f->trampoff = trampoff; |
| 669 | fixups = f; |
| 670 | } |
| 671 | else |
| 672 | { |
| 673 | /* If trampoline is out of range, there is nothing we |
| 674 | can do. */ |
| 675 | offset = f->trampoff - (roff & (bfd_vma) -4); |
| 676 | if (offset < -0x1000000 || offset > 0x0FFFFF0) |
| 677 | continue; |
| 678 | |
| 679 | /* Nop out the reloc, since we're finalizing things here. */ |
| 680 | irel->r_info = ELF64_R_INFO (0, R_IA64_NONE); |
| 681 | } |
| 682 | |
| 683 | /* Fix up the existing branch to hit the trampoline. */ |
| 684 | if (ia64_elf_install_value (contents + roff, offset, r_type) |
| 685 | != bfd_reloc_ok) |
| 686 | goto error_return; |
| 687 | |
| 688 | changed_contents = TRUE; |
| 689 | changed_relocs = TRUE; |
| 690 | } |
| 691 | else |
| 692 | { |
| 693 | /* Fetch the gp. */ |
| 694 | if (gp == 0) |
| 695 | { |
| 696 | bfd *obfd = sec->output_section->owner; |
| 697 | gp = _bfd_get_gp_value (obfd); |
| 698 | if (gp == 0) |
| 699 | { |
| 700 | if (!elf64_ia64_choose_gp (obfd, link_info, FALSE)) |
| 701 | goto error_return; |
| 702 | gp = _bfd_get_gp_value (obfd); |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | /* If the data is out of range, do nothing. */ |
| 707 | if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 |
| 708 | ||(bfd_signed_vma) (symaddr - gp) < -0x200000) |
| 709 | continue; |
| 710 | |
| 711 | if (r_type == R_IA64_GPREL22) |
| 712 | elf64_ia64_update_short_info (tsec->output_section, |
| 713 | tsec->output_offset + toff, |
| 714 | ia64_info); |
| 715 | else if (r_type == R_IA64_LTOFF22X) |
| 716 | { |
| 717 | /* Can't deal yet correctly with ABS symbols. */ |
| 718 | if (bfd_is_abs_section (tsec)) |
| 719 | continue; |
| 720 | |
| 721 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 722 | R_IA64_GPREL22); |
| 723 | changed_relocs = TRUE; |
| 724 | |
| 725 | elf64_ia64_update_short_info (tsec->output_section, |
| 726 | tsec->output_offset + toff, |
| 727 | ia64_info); |
| 728 | } |
| 729 | else |
| 730 | { |
| 731 | ia64_elf_relax_ldxmov (contents, roff); |
| 732 | irel->r_info = ELF64_R_INFO (0, R_IA64_NONE); |
| 733 | changed_contents = TRUE; |
| 734 | changed_relocs = TRUE; |
| 735 | } |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | /* ??? If we created fixups, this may push the code segment large |
| 740 | enough that the data segment moves, which will change the GP. |
| 741 | Reset the GP so that we re-calculate next round. We need to |
| 742 | do this at the _beginning_ of the next round; now will not do. */ |
| 743 | |
| 744 | /* Clean up and go home. */ |
| 745 | while (fixups) |
| 746 | { |
| 747 | struct one_fixup *f = fixups; |
| 748 | fixups = fixups->next; |
| 749 | free (f); |
| 750 | } |
| 751 | |
| 752 | if (isymbuf != NULL |
| 753 | && symtab_hdr->contents != (unsigned char *) isymbuf) |
| 754 | { |
| 755 | if (! link_info->keep_memory) |
| 756 | free (isymbuf); |
| 757 | else |
| 758 | { |
| 759 | /* Cache the symbols for elf_link_input_bfd. */ |
| 760 | symtab_hdr->contents = (unsigned char *) isymbuf; |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | if (contents != NULL |
| 765 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 766 | { |
| 767 | if (!changed_contents && !link_info->keep_memory) |
| 768 | free (contents); |
| 769 | else |
| 770 | { |
| 771 | /* Cache the section contents for elf_link_input_bfd. */ |
| 772 | elf_section_data (sec)->this_hdr.contents = contents; |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | if (elf_section_data (sec)->relocs != internal_relocs) |
| 777 | { |
| 778 | if (!changed_relocs) |
| 779 | free (internal_relocs); |
| 780 | else |
| 781 | elf_section_data (sec)->relocs = internal_relocs; |
| 782 | } |
| 783 | |
| 784 | if (link_info->relax_pass == 0) |
| 785 | { |
| 786 | /* Pass 0 is only needed to relax br. */ |
| 787 | sec->skip_relax_pass_0 = skip_relax_pass_0; |
| 788 | sec->skip_relax_pass_1 = skip_relax_pass_1; |
| 789 | } |
| 790 | |
| 791 | *again = changed_contents || changed_relocs; |
| 792 | return TRUE; |
| 793 | |
| 794 | error_return: |
| 795 | if ((unsigned char *) isymbuf != symtab_hdr->contents) |
| 796 | free (isymbuf); |
| 797 | if (elf_section_data (sec)->this_hdr.contents != contents) |
| 798 | free (contents); |
| 799 | if (elf_section_data (sec)->relocs != internal_relocs) |
| 800 | free (internal_relocs); |
| 801 | return FALSE; |
| 802 | } |
| 803 | #undef skip_relax_pass_0 |
| 804 | #undef skip_relax_pass_1 |
| 805 | |
| 806 | /* Return TRUE if NAME is an unwind table section name. */ |
| 807 | |
| 808 | static inline bfd_boolean |
| 809 | is_unwind_section_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
| 810 | { |
| 811 | return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) |
| 812 | && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) |
| 813 | || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); |
| 814 | } |
| 815 | |
| 816 | |
| 817 | /* Convert IA-64 specific section flags to bfd internal section flags. */ |
| 818 | |
| 819 | /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV |
| 820 | flag. */ |
| 821 | |
| 822 | static bfd_boolean |
| 823 | elf64_ia64_section_flags (const Elf_Internal_Shdr *hdr) |
| 824 | { |
| 825 | if (hdr->sh_flags & SHF_IA_64_SHORT) |
| 826 | hdr->bfd_section->flags |= SEC_SMALL_DATA; |
| 827 | |
| 828 | return TRUE; |
| 829 | } |
| 830 | |
| 831 | /* Set the correct type for an IA-64 ELF section. We do this by the |
| 832 | section name, which is a hack, but ought to work. */ |
| 833 | |
| 834 | static bfd_boolean |
| 835 | elf64_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, |
| 836 | asection *sec) |
| 837 | { |
| 838 | const char *name; |
| 839 | |
| 840 | name = bfd_section_name (sec); |
| 841 | |
| 842 | if (is_unwind_section_name (abfd, name)) |
| 843 | { |
| 844 | /* We don't have the sections numbered at this point, so sh_info |
| 845 | is set later, in elf64_ia64_final_write_processing. */ |
| 846 | hdr->sh_type = SHT_IA_64_UNWIND; |
| 847 | hdr->sh_flags |= SHF_LINK_ORDER; |
| 848 | } |
| 849 | else if (strcmp (name, ELF_STRING_ia64_archext) == 0) |
| 850 | hdr->sh_type = SHT_IA_64_EXT; |
| 851 | |
| 852 | if (sec->flags & SEC_SMALL_DATA) |
| 853 | hdr->sh_flags |= SHF_IA_64_SHORT; |
| 854 | |
| 855 | return TRUE; |
| 856 | } |
| 857 | |
| 858 | /* Hook called by the linker routine which adds symbols from an object |
| 859 | file. We use it to put .comm items in .sbss, and not .bss. */ |
| 860 | |
| 861 | static bfd_boolean |
| 862 | elf64_ia64_add_symbol_hook (bfd *abfd, |
| 863 | struct bfd_link_info *info, |
| 864 | Elf_Internal_Sym *sym, |
| 865 | const char **namep ATTRIBUTE_UNUSED, |
| 866 | flagword *flagsp ATTRIBUTE_UNUSED, |
| 867 | asection **secp, |
| 868 | bfd_vma *valp) |
| 869 | { |
| 870 | if (sym->st_shndx == SHN_COMMON |
| 871 | && !bfd_link_relocatable (info) |
| 872 | && sym->st_size <= elf_gp_size (abfd)) |
| 873 | { |
| 874 | /* Common symbols less than or equal to -G nn bytes are |
| 875 | automatically put into .sbss. */ |
| 876 | |
| 877 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
| 878 | |
| 879 | if (scomm == NULL) |
| 880 | { |
| 881 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
| 882 | (SEC_ALLOC |
| 883 | | SEC_IS_COMMON |
| 884 | | SEC_LINKER_CREATED)); |
| 885 | if (scomm == NULL) |
| 886 | return FALSE; |
| 887 | } |
| 888 | |
| 889 | *secp = scomm; |
| 890 | *valp = sym->st_size; |
| 891 | } |
| 892 | |
| 893 | return TRUE; |
| 894 | } |
| 895 | |
| 896 | /* According to the Tahoe assembler spec, all labels starting with a |
| 897 | '.' are local. */ |
| 898 | |
| 899 | static bfd_boolean |
| 900 | elf64_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
| 901 | const char *name) |
| 902 | { |
| 903 | return name[0] == '.'; |
| 904 | } |
| 905 | |
| 906 | /* Should we do dynamic things to this symbol? */ |
| 907 | |
| 908 | static bfd_boolean |
| 909 | elf64_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h) |
| 910 | { |
| 911 | return h != NULL && h->def_dynamic; |
| 912 | } |
| 913 | |
| 914 | static struct bfd_hash_entry* |
| 915 | elf64_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, |
| 916 | struct bfd_hash_table *table, |
| 917 | const char *string) |
| 918 | { |
| 919 | struct elf64_ia64_link_hash_entry *ret; |
| 920 | ret = (struct elf64_ia64_link_hash_entry *) entry; |
| 921 | |
| 922 | /* Allocate the structure if it has not already been allocated by a |
| 923 | subclass. */ |
| 924 | if (!ret) |
| 925 | ret = bfd_hash_allocate (table, sizeof (*ret)); |
| 926 | |
| 927 | if (!ret) |
| 928 | return 0; |
| 929 | |
| 930 | /* Call the allocation method of the superclass. */ |
| 931 | ret = ((struct elf64_ia64_link_hash_entry *) |
| 932 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 933 | table, string)); |
| 934 | |
| 935 | ret->info = NULL; |
| 936 | ret->count = 0; |
| 937 | ret->sorted_count = 0; |
| 938 | ret->size = 0; |
| 939 | return (struct bfd_hash_entry *) ret; |
| 940 | } |
| 941 | |
| 942 | static void |
| 943 | elf64_ia64_hash_hide_symbol (struct bfd_link_info *info, |
| 944 | struct elf_link_hash_entry *xh, |
| 945 | bfd_boolean force_local) |
| 946 | { |
| 947 | struct elf64_ia64_link_hash_entry *h; |
| 948 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 949 | unsigned int count; |
| 950 | |
| 951 | h = (struct elf64_ia64_link_hash_entry *)xh; |
| 952 | |
| 953 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); |
| 954 | |
| 955 | for (count = h->count, dyn_i = h->info; |
| 956 | count != 0; |
| 957 | count--, dyn_i++) |
| 958 | { |
| 959 | dyn_i->want_plt2 = 0; |
| 960 | dyn_i->want_plt = 0; |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | /* Compute a hash of a local hash entry. */ |
| 965 | |
| 966 | static hashval_t |
| 967 | elf64_ia64_local_htab_hash (const void *ptr) |
| 968 | { |
| 969 | struct elf64_ia64_local_hash_entry *entry |
| 970 | = (struct elf64_ia64_local_hash_entry *) ptr; |
| 971 | |
| 972 | return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); |
| 973 | } |
| 974 | |
| 975 | /* Compare local hash entries. */ |
| 976 | |
| 977 | static int |
| 978 | elf64_ia64_local_htab_eq (const void *ptr1, const void *ptr2) |
| 979 | { |
| 980 | struct elf64_ia64_local_hash_entry *entry1 |
| 981 | = (struct elf64_ia64_local_hash_entry *) ptr1; |
| 982 | struct elf64_ia64_local_hash_entry *entry2 |
| 983 | = (struct elf64_ia64_local_hash_entry *) ptr2; |
| 984 | |
| 985 | return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; |
| 986 | } |
| 987 | |
| 988 | /* Free the global elf64_ia64_dyn_sym_info array. */ |
| 989 | |
| 990 | static bfd_boolean |
| 991 | elf64_ia64_global_dyn_info_free (void **xentry, |
| 992 | void * unused ATTRIBUTE_UNUSED) |
| 993 | { |
| 994 | struct elf64_ia64_link_hash_entry *entry |
| 995 | = (struct elf64_ia64_link_hash_entry *) xentry; |
| 996 | |
| 997 | if (entry->root.root.type == bfd_link_hash_warning) |
| 998 | entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link; |
| 999 | |
| 1000 | free (entry->info); |
| 1001 | entry->info = NULL; |
| 1002 | entry->count = 0; |
| 1003 | entry->sorted_count = 0; |
| 1004 | entry->size = 0; |
| 1005 | |
| 1006 | return TRUE; |
| 1007 | } |
| 1008 | |
| 1009 | /* Free the local elf64_ia64_dyn_sym_info array. */ |
| 1010 | |
| 1011 | static bfd_boolean |
| 1012 | elf64_ia64_local_dyn_info_free (void **slot, |
| 1013 | void * unused ATTRIBUTE_UNUSED) |
| 1014 | { |
| 1015 | struct elf64_ia64_local_hash_entry *entry |
| 1016 | = (struct elf64_ia64_local_hash_entry *) *slot; |
| 1017 | |
| 1018 | free (entry->info); |
| 1019 | entry->info = NULL; |
| 1020 | entry->count = 0; |
| 1021 | entry->sorted_count = 0; |
| 1022 | entry->size = 0; |
| 1023 | |
| 1024 | return TRUE; |
| 1025 | } |
| 1026 | |
| 1027 | /* Destroy IA-64 linker hash table. */ |
| 1028 | |
| 1029 | static void |
| 1030 | elf64_ia64_link_hash_table_free (bfd *obfd) |
| 1031 | { |
| 1032 | struct elf64_ia64_link_hash_table *ia64_info |
| 1033 | = (struct elf64_ia64_link_hash_table *) obfd->link.hash; |
| 1034 | if (ia64_info->loc_hash_table) |
| 1035 | { |
| 1036 | htab_traverse (ia64_info->loc_hash_table, |
| 1037 | elf64_ia64_local_dyn_info_free, NULL); |
| 1038 | htab_delete (ia64_info->loc_hash_table); |
| 1039 | } |
| 1040 | if (ia64_info->loc_hash_memory) |
| 1041 | objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); |
| 1042 | elf_link_hash_traverse (&ia64_info->root, |
| 1043 | elf64_ia64_global_dyn_info_free, NULL); |
| 1044 | _bfd_elf_link_hash_table_free (obfd); |
| 1045 | } |
| 1046 | |
| 1047 | /* Create the derived linker hash table. The IA-64 ELF port uses this |
| 1048 | derived hash table to keep information specific to the IA-64 ElF |
| 1049 | linker (without using static variables). */ |
| 1050 | |
| 1051 | static struct bfd_link_hash_table * |
| 1052 | elf64_ia64_hash_table_create (bfd *abfd) |
| 1053 | { |
| 1054 | struct elf64_ia64_link_hash_table *ret; |
| 1055 | |
| 1056 | ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); |
| 1057 | if (!ret) |
| 1058 | return NULL; |
| 1059 | |
| 1060 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 1061 | elf64_ia64_new_elf_hash_entry, |
| 1062 | sizeof (struct elf64_ia64_link_hash_entry), |
| 1063 | IA64_ELF_DATA)) |
| 1064 | { |
| 1065 | free (ret); |
| 1066 | return NULL; |
| 1067 | } |
| 1068 | |
| 1069 | ret->loc_hash_table = htab_try_create (1024, elf64_ia64_local_htab_hash, |
| 1070 | elf64_ia64_local_htab_eq, NULL); |
| 1071 | ret->loc_hash_memory = objalloc_create (); |
| 1072 | if (!ret->loc_hash_table || !ret->loc_hash_memory) |
| 1073 | { |
| 1074 | elf64_ia64_link_hash_table_free (abfd); |
| 1075 | return NULL; |
| 1076 | } |
| 1077 | ret->root.root.hash_table_free = elf64_ia64_link_hash_table_free; |
| 1078 | |
| 1079 | return &ret->root.root; |
| 1080 | } |
| 1081 | |
| 1082 | /* Traverse both local and global hash tables. */ |
| 1083 | |
| 1084 | struct elf64_ia64_dyn_sym_traverse_data |
| 1085 | { |
| 1086 | bfd_boolean (*func) (struct elf64_ia64_dyn_sym_info *, void *); |
| 1087 | void * data; |
| 1088 | }; |
| 1089 | |
| 1090 | static bfd_boolean |
| 1091 | elf64_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, |
| 1092 | void * xdata) |
| 1093 | { |
| 1094 | struct elf64_ia64_link_hash_entry *entry |
| 1095 | = (struct elf64_ia64_link_hash_entry *) xentry; |
| 1096 | struct elf64_ia64_dyn_sym_traverse_data *data |
| 1097 | = (struct elf64_ia64_dyn_sym_traverse_data *) xdata; |
| 1098 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 1099 | unsigned int count; |
| 1100 | |
| 1101 | if (entry->root.root.type == bfd_link_hash_warning) |
| 1102 | entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link; |
| 1103 | |
| 1104 | for (count = entry->count, dyn_i = entry->info; |
| 1105 | count != 0; |
| 1106 | count--, dyn_i++) |
| 1107 | if (! (*data->func) (dyn_i, data->data)) |
| 1108 | return FALSE; |
| 1109 | return TRUE; |
| 1110 | } |
| 1111 | |
| 1112 | static bfd_boolean |
| 1113 | elf64_ia64_local_dyn_sym_thunk (void **slot, void * xdata) |
| 1114 | { |
| 1115 | struct elf64_ia64_local_hash_entry *entry |
| 1116 | = (struct elf64_ia64_local_hash_entry *) *slot; |
| 1117 | struct elf64_ia64_dyn_sym_traverse_data *data |
| 1118 | = (struct elf64_ia64_dyn_sym_traverse_data *) xdata; |
| 1119 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 1120 | unsigned int count; |
| 1121 | |
| 1122 | for (count = entry->count, dyn_i = entry->info; |
| 1123 | count != 0; |
| 1124 | count--, dyn_i++) |
| 1125 | if (! (*data->func) (dyn_i, data->data)) |
| 1126 | return FALSE; |
| 1127 | return TRUE; |
| 1128 | } |
| 1129 | |
| 1130 | static void |
| 1131 | elf64_ia64_dyn_sym_traverse (struct elf64_ia64_link_hash_table *ia64_info, |
| 1132 | bfd_boolean (*func) (struct elf64_ia64_dyn_sym_info *, void *), |
| 1133 | void * data) |
| 1134 | { |
| 1135 | struct elf64_ia64_dyn_sym_traverse_data xdata; |
| 1136 | |
| 1137 | xdata.func = func; |
| 1138 | xdata.data = data; |
| 1139 | |
| 1140 | elf_link_hash_traverse (&ia64_info->root, |
| 1141 | elf64_ia64_global_dyn_sym_thunk, &xdata); |
| 1142 | htab_traverse (ia64_info->loc_hash_table, |
| 1143 | elf64_ia64_local_dyn_sym_thunk, &xdata); |
| 1144 | } |
| 1145 | |
| 1146 | #define NOTE_NAME "IPF/VMS" |
| 1147 | |
| 1148 | static bfd_boolean |
| 1149 | create_ia64_vms_notes (bfd *abfd, struct bfd_link_info *info, |
| 1150 | unsigned int time_hi, unsigned int time_lo) |
| 1151 | { |
| 1152 | #define NBR_NOTES 7 |
| 1153 | Elf_Internal_Note notes[NBR_NOTES]; |
| 1154 | char *module_name; |
| 1155 | int module_name_len; |
| 1156 | unsigned char cur_time[8]; |
| 1157 | Elf64_External_VMS_ORIG_DYN_Note *orig_dyn; |
| 1158 | unsigned int orig_dyn_size; |
| 1159 | unsigned int note_size; |
| 1160 | int i; |
| 1161 | unsigned char *noteptr; |
| 1162 | unsigned char *note_contents; |
| 1163 | struct elf64_ia64_link_hash_table *ia64_info; |
| 1164 | |
| 1165 | ia64_info = elf64_ia64_hash_table (info); |
| 1166 | |
| 1167 | module_name = vms_get_module_name (bfd_get_filename (abfd), TRUE); |
| 1168 | module_name_len = strlen (module_name) + 1; |
| 1169 | |
| 1170 | bfd_putl32 (time_lo, cur_time + 0); |
| 1171 | bfd_putl32 (time_hi, cur_time + 4); |
| 1172 | |
| 1173 | /* Note 0: IMGNAM. */ |
| 1174 | notes[0].type = NT_VMS_IMGNAM; |
| 1175 | notes[0].descdata = module_name; |
| 1176 | notes[0].descsz = module_name_len; |
| 1177 | |
| 1178 | /* Note 1: GSTNAM. */ |
| 1179 | notes[1].type = NT_VMS_GSTNAM; |
| 1180 | notes[1].descdata = module_name; |
| 1181 | notes[1].descsz = module_name_len; |
| 1182 | |
| 1183 | /* Note 2: IMGID. */ |
| 1184 | #define IMG_ID "V1.0" |
| 1185 | notes[2].type = NT_VMS_IMGID; |
| 1186 | notes[2].descdata = IMG_ID; |
| 1187 | notes[2].descsz = sizeof (IMG_ID); |
| 1188 | |
| 1189 | /* Note 3: Linktime. */ |
| 1190 | notes[3].type = NT_VMS_LINKTIME; |
| 1191 | notes[3].descdata = (char *)cur_time; |
| 1192 | notes[3].descsz = sizeof (cur_time); |
| 1193 | |
| 1194 | /* Note 4: Linker id. */ |
| 1195 | notes[4].type = NT_VMS_LINKID; |
| 1196 | notes[4].descdata = "GNU ld " BFD_VERSION_STRING; |
| 1197 | notes[4].descsz = strlen (notes[4].descdata) + 1; |
| 1198 | |
| 1199 | /* Note 5: Original dyn. */ |
| 1200 | orig_dyn_size = (sizeof (*orig_dyn) + sizeof (IMG_ID) - 1 + 7) & ~7; |
| 1201 | orig_dyn = bfd_zalloc (abfd, orig_dyn_size); |
| 1202 | if (orig_dyn == NULL) |
| 1203 | return FALSE; |
| 1204 | bfd_putl32 (1, orig_dyn->major_id); |
| 1205 | bfd_putl32 (3, orig_dyn->minor_id); |
| 1206 | memcpy (orig_dyn->manipulation_date, cur_time, sizeof (cur_time)); |
| 1207 | bfd_putl64 (VMS_LF_IMGSTA | VMS_LF_MAIN, orig_dyn->link_flags); |
| 1208 | bfd_putl32 (EF_IA_64_ABI64, orig_dyn->elf_flags); |
| 1209 | memcpy (orig_dyn->imgid, IMG_ID, sizeof (IMG_ID)); |
| 1210 | notes[5].type = NT_VMS_ORIG_DYN; |
| 1211 | notes[5].descdata = (char *)orig_dyn; |
| 1212 | notes[5].descsz = orig_dyn_size; |
| 1213 | |
| 1214 | /* Note 3: Patchtime. */ |
| 1215 | notes[6].type = NT_VMS_PATCHTIME; |
| 1216 | notes[6].descdata = (char *)cur_time; |
| 1217 | notes[6].descsz = sizeof (cur_time); |
| 1218 | |
| 1219 | /* Compute notes size. */ |
| 1220 | note_size = 0; |
| 1221 | for (i = 0; i < NBR_NOTES; i++) |
| 1222 | note_size += sizeof (Elf64_External_VMS_Note) - 1 |
| 1223 | + ((sizeof (NOTE_NAME) - 1 + 7) & ~7) |
| 1224 | + ((notes[i].descsz + 7) & ~7); |
| 1225 | |
| 1226 | /* Malloc a temporary buffer large enough for most notes */ |
| 1227 | note_contents = (unsigned char *) bfd_zalloc (abfd, note_size); |
| 1228 | if (note_contents == NULL) |
| 1229 | return FALSE; |
| 1230 | noteptr = note_contents; |
| 1231 | |
| 1232 | /* Fill notes. */ |
| 1233 | for (i = 0; i < NBR_NOTES; i++) |
| 1234 | { |
| 1235 | Elf64_External_VMS_Note *enote = (Elf64_External_VMS_Note *) noteptr; |
| 1236 | |
| 1237 | bfd_putl64 (sizeof (NOTE_NAME) - 1, enote->namesz); |
| 1238 | bfd_putl64 (notes[i].descsz, enote->descsz); |
| 1239 | bfd_putl64 (notes[i].type, enote->type); |
| 1240 | |
| 1241 | noteptr = (unsigned char *)enote->name; |
| 1242 | memcpy (noteptr, NOTE_NAME, sizeof (NOTE_NAME) - 1); |
| 1243 | noteptr += (sizeof (NOTE_NAME) - 1 + 7) & ~7; |
| 1244 | memcpy (noteptr, notes[i].descdata, notes[i].descsz); |
| 1245 | noteptr += (notes[i].descsz + 7) & ~7; |
| 1246 | } |
| 1247 | |
| 1248 | ia64_info->note_sec->contents = note_contents; |
| 1249 | ia64_info->note_sec->size = note_size; |
| 1250 | |
| 1251 | free (module_name); |
| 1252 | |
| 1253 | return TRUE; |
| 1254 | } |
| 1255 | |
| 1256 | static bfd_boolean |
| 1257 | elf64_ia64_create_dynamic_sections (bfd *abfd, |
| 1258 | struct bfd_link_info *info) |
| 1259 | { |
| 1260 | struct elf64_ia64_link_hash_table *ia64_info; |
| 1261 | asection *s; |
| 1262 | flagword flags; |
| 1263 | const struct elf_backend_data *bed; |
| 1264 | |
| 1265 | ia64_info = elf64_ia64_hash_table (info); |
| 1266 | if (ia64_info == NULL) |
| 1267 | return FALSE; |
| 1268 | |
| 1269 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1270 | return TRUE; |
| 1271 | |
| 1272 | abfd = elf_hash_table (info)->dynobj; |
| 1273 | bed = get_elf_backend_data (abfd); |
| 1274 | |
| 1275 | flags = bed->dynamic_sec_flags; |
| 1276 | |
| 1277 | s = bfd_make_section_anyway_with_flags (abfd, ".dynamic", |
| 1278 | flags | SEC_READONLY); |
| 1279 | if (s == NULL |
| 1280 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
| 1281 | return FALSE; |
| 1282 | |
| 1283 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags | SEC_READONLY); |
| 1284 | if (s == NULL |
| 1285 | || !bfd_set_section_alignment (s, bed->plt_alignment)) |
| 1286 | return FALSE; |
| 1287 | ia64_info->root.splt = s; |
| 1288 | |
| 1289 | if (!get_got (abfd, ia64_info)) |
| 1290 | return FALSE; |
| 1291 | |
| 1292 | if (!get_pltoff (abfd, ia64_info)) |
| 1293 | return FALSE; |
| 1294 | |
| 1295 | s = bfd_make_section_anyway_with_flags (abfd, ".vmsdynstr", |
| 1296 | (SEC_ALLOC |
| 1297 | | SEC_HAS_CONTENTS |
| 1298 | | SEC_IN_MEMORY |
| 1299 | | SEC_LINKER_CREATED)); |
| 1300 | if (s == NULL |
| 1301 | || !bfd_set_section_alignment (s, 0)) |
| 1302 | return FALSE; |
| 1303 | |
| 1304 | /* Create a fixup section. */ |
| 1305 | s = bfd_make_section_anyway_with_flags (abfd, ".fixups", |
| 1306 | (SEC_ALLOC |
| 1307 | | SEC_HAS_CONTENTS |
| 1308 | | SEC_IN_MEMORY |
| 1309 | | SEC_LINKER_CREATED)); |
| 1310 | if (s == NULL |
| 1311 | || !bfd_set_section_alignment (s, 3)) |
| 1312 | return FALSE; |
| 1313 | ia64_info->fixups_sec = s; |
| 1314 | |
| 1315 | /* Create the transfer fixup section. */ |
| 1316 | s = bfd_make_section_anyway_with_flags (abfd, ".transfer", |
| 1317 | (SEC_ALLOC |
| 1318 | | SEC_HAS_CONTENTS |
| 1319 | | SEC_IN_MEMORY |
| 1320 | | SEC_LINKER_CREATED)); |
| 1321 | if (s == NULL |
| 1322 | || !bfd_set_section_alignment (s, 3)) |
| 1323 | return FALSE; |
| 1324 | s->size = sizeof (struct elf64_vms_transfer); |
| 1325 | ia64_info->transfer_sec = s; |
| 1326 | |
| 1327 | /* Create note section. */ |
| 1328 | s = bfd_make_section_anyway_with_flags (abfd, ".vms.note", |
| 1329 | (SEC_LINKER_CREATED |
| 1330 | | SEC_HAS_CONTENTS |
| 1331 | | SEC_IN_MEMORY |
| 1332 | | SEC_READONLY)); |
| 1333 | if (s == NULL |
| 1334 | || !bfd_set_section_alignment (s, 3)) |
| 1335 | return FALSE; |
| 1336 | ia64_info->note_sec = s; |
| 1337 | |
| 1338 | elf_hash_table (info)->dynamic_sections_created = TRUE; |
| 1339 | return TRUE; |
| 1340 | } |
| 1341 | |
| 1342 | /* Find and/or create a hash entry for local symbol. */ |
| 1343 | static struct elf64_ia64_local_hash_entry * |
| 1344 | get_local_sym_hash (struct elf64_ia64_link_hash_table *ia64_info, |
| 1345 | bfd *abfd, const Elf_Internal_Rela *rel, |
| 1346 | bfd_boolean create) |
| 1347 | { |
| 1348 | struct elf64_ia64_local_hash_entry e, *ret; |
| 1349 | asection *sec = abfd->sections; |
| 1350 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
| 1351 | ELF64_R_SYM (rel->r_info)); |
| 1352 | void **slot; |
| 1353 | |
| 1354 | e.id = sec->id; |
| 1355 | e.r_sym = ELF64_R_SYM (rel->r_info); |
| 1356 | slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, |
| 1357 | create ? INSERT : NO_INSERT); |
| 1358 | |
| 1359 | if (!slot) |
| 1360 | return NULL; |
| 1361 | |
| 1362 | if (*slot) |
| 1363 | return (struct elf64_ia64_local_hash_entry *) *slot; |
| 1364 | |
| 1365 | ret = (struct elf64_ia64_local_hash_entry *) |
| 1366 | objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, |
| 1367 | sizeof (struct elf64_ia64_local_hash_entry)); |
| 1368 | if (ret) |
| 1369 | { |
| 1370 | memset (ret, 0, sizeof (*ret)); |
| 1371 | ret->id = sec->id; |
| 1372 | ret->r_sym = ELF64_R_SYM (rel->r_info); |
| 1373 | *slot = ret; |
| 1374 | } |
| 1375 | return ret; |
| 1376 | } |
| 1377 | |
| 1378 | /* Used to sort elf64_ia64_dyn_sym_info array. */ |
| 1379 | |
| 1380 | static int |
| 1381 | addend_compare (const void *xp, const void *yp) |
| 1382 | { |
| 1383 | const struct elf64_ia64_dyn_sym_info *x |
| 1384 | = (const struct elf64_ia64_dyn_sym_info *) xp; |
| 1385 | const struct elf64_ia64_dyn_sym_info *y |
| 1386 | = (const struct elf64_ia64_dyn_sym_info *) yp; |
| 1387 | |
| 1388 | return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; |
| 1389 | } |
| 1390 | |
| 1391 | /* Sort elf64_ia64_dyn_sym_info array and remove duplicates. */ |
| 1392 | |
| 1393 | static unsigned int |
| 1394 | sort_dyn_sym_info (struct elf64_ia64_dyn_sym_info *info, |
| 1395 | unsigned int count) |
| 1396 | { |
| 1397 | bfd_vma curr, prev, got_offset; |
| 1398 | unsigned int i, kept, dupes, diff, dest, src, len; |
| 1399 | |
| 1400 | qsort (info, count, sizeof (*info), addend_compare); |
| 1401 | |
| 1402 | /* Find the first duplicate. */ |
| 1403 | prev = info [0].addend; |
| 1404 | got_offset = info [0].got_offset; |
| 1405 | for (i = 1; i < count; i++) |
| 1406 | { |
| 1407 | curr = info [i].addend; |
| 1408 | if (curr == prev) |
| 1409 | { |
| 1410 | /* For duplicates, make sure that GOT_OFFSET is valid. */ |
| 1411 | if (got_offset == (bfd_vma) -1) |
| 1412 | got_offset = info [i].got_offset; |
| 1413 | break; |
| 1414 | } |
| 1415 | got_offset = info [i].got_offset; |
| 1416 | prev = curr; |
| 1417 | } |
| 1418 | |
| 1419 | /* We may move a block of elements to here. */ |
| 1420 | dest = i++; |
| 1421 | |
| 1422 | /* Remove duplicates. */ |
| 1423 | if (i < count) |
| 1424 | { |
| 1425 | while (i < count) |
| 1426 | { |
| 1427 | /* For duplicates, make sure that the kept one has a valid |
| 1428 | got_offset. */ |
| 1429 | kept = dest - 1; |
| 1430 | if (got_offset != (bfd_vma) -1) |
| 1431 | info [kept].got_offset = got_offset; |
| 1432 | |
| 1433 | curr = info [i].addend; |
| 1434 | got_offset = info [i].got_offset; |
| 1435 | |
| 1436 | /* Move a block of elements whose first one is different from |
| 1437 | the previous. */ |
| 1438 | if (curr == prev) |
| 1439 | { |
| 1440 | for (src = i + 1; src < count; src++) |
| 1441 | { |
| 1442 | if (info [src].addend != curr) |
| 1443 | break; |
| 1444 | /* For duplicates, make sure that GOT_OFFSET is |
| 1445 | valid. */ |
| 1446 | if (got_offset == (bfd_vma) -1) |
| 1447 | got_offset = info [src].got_offset; |
| 1448 | } |
| 1449 | |
| 1450 | /* Make sure that the kept one has a valid got_offset. */ |
| 1451 | if (got_offset != (bfd_vma) -1) |
| 1452 | info [kept].got_offset = got_offset; |
| 1453 | } |
| 1454 | else |
| 1455 | src = i; |
| 1456 | |
| 1457 | if (src >= count) |
| 1458 | break; |
| 1459 | |
| 1460 | /* Find the next duplicate. SRC will be kept. */ |
| 1461 | prev = info [src].addend; |
| 1462 | got_offset = info [src].got_offset; |
| 1463 | for (dupes = src + 1; dupes < count; dupes ++) |
| 1464 | { |
| 1465 | curr = info [dupes].addend; |
| 1466 | if (curr == prev) |
| 1467 | { |
| 1468 | /* Make sure that got_offset is valid. */ |
| 1469 | if (got_offset == (bfd_vma) -1) |
| 1470 | got_offset = info [dupes].got_offset; |
| 1471 | |
| 1472 | /* For duplicates, make sure that the kept one has |
| 1473 | a valid got_offset. */ |
| 1474 | if (got_offset != (bfd_vma) -1) |
| 1475 | info [dupes - 1].got_offset = got_offset; |
| 1476 | break; |
| 1477 | } |
| 1478 | got_offset = info [dupes].got_offset; |
| 1479 | prev = curr; |
| 1480 | } |
| 1481 | |
| 1482 | /* How much to move. */ |
| 1483 | len = dupes - src; |
| 1484 | i = dupes + 1; |
| 1485 | |
| 1486 | if (len == 1 && dupes < count) |
| 1487 | { |
| 1488 | /* If we only move 1 element, we combine it with the next |
| 1489 | one. There must be at least a duplicate. Find the |
| 1490 | next different one. */ |
| 1491 | for (diff = dupes + 1, src++; diff < count; diff++, src++) |
| 1492 | { |
| 1493 | if (info [diff].addend != curr) |
| 1494 | break; |
| 1495 | /* Make sure that got_offset is valid. */ |
| 1496 | if (got_offset == (bfd_vma) -1) |
| 1497 | got_offset = info [diff].got_offset; |
| 1498 | } |
| 1499 | |
| 1500 | /* Makre sure that the last duplicated one has an valid |
| 1501 | offset. */ |
| 1502 | BFD_ASSERT (curr == prev); |
| 1503 | if (got_offset != (bfd_vma) -1) |
| 1504 | info [diff - 1].got_offset = got_offset; |
| 1505 | |
| 1506 | if (diff < count) |
| 1507 | { |
| 1508 | /* Find the next duplicate. Track the current valid |
| 1509 | offset. */ |
| 1510 | prev = info [diff].addend; |
| 1511 | got_offset = info [diff].got_offset; |
| 1512 | for (dupes = diff + 1; dupes < count; dupes ++) |
| 1513 | { |
| 1514 | curr = info [dupes].addend; |
| 1515 | if (curr == prev) |
| 1516 | { |
| 1517 | /* For duplicates, make sure that GOT_OFFSET |
| 1518 | is valid. */ |
| 1519 | if (got_offset == (bfd_vma) -1) |
| 1520 | got_offset = info [dupes].got_offset; |
| 1521 | break; |
| 1522 | } |
| 1523 | got_offset = info [dupes].got_offset; |
| 1524 | prev = curr; |
| 1525 | diff++; |
| 1526 | } |
| 1527 | |
| 1528 | len = diff - src + 1; |
| 1529 | i = diff + 1; |
| 1530 | } |
| 1531 | } |
| 1532 | |
| 1533 | memmove (&info [dest], &info [src], len * sizeof (*info)); |
| 1534 | |
| 1535 | dest += len; |
| 1536 | } |
| 1537 | |
| 1538 | count = dest; |
| 1539 | } |
| 1540 | else |
| 1541 | { |
| 1542 | /* When we get here, either there is no duplicate at all or |
| 1543 | the only duplicate is the last element. */ |
| 1544 | if (dest < count) |
| 1545 | { |
| 1546 | /* If the last element is a duplicate, make sure that the |
| 1547 | kept one has a valid got_offset. We also update count. */ |
| 1548 | if (got_offset != (bfd_vma) -1) |
| 1549 | info [dest - 1].got_offset = got_offset; |
| 1550 | count = dest; |
| 1551 | } |
| 1552 | } |
| 1553 | |
| 1554 | return count; |
| 1555 | } |
| 1556 | |
| 1557 | /* Find and/or create a descriptor for dynamic symbol info. This will |
| 1558 | vary based on global or local symbol, and the addend to the reloc. |
| 1559 | |
| 1560 | We don't sort when inserting. Also, we sort and eliminate |
| 1561 | duplicates if there is an unsorted section. Typically, this will |
| 1562 | only happen once, because we do all insertions before lookups. We |
| 1563 | then use bsearch to do a lookup. This also allows lookups to be |
| 1564 | fast. So we have fast insertion (O(log N) due to duplicate check), |
| 1565 | fast lookup (O(log N)) and one sort (O(N log N) expected time). |
| 1566 | Previously, all lookups were O(N) because of the use of the linked |
| 1567 | list and also all insertions were O(N) because of the check for |
| 1568 | duplicates. There are some complications here because the array |
| 1569 | size grows occasionally, which may add an O(N) factor, but this |
| 1570 | should be rare. Also, we free the excess array allocation, which |
| 1571 | requires a copy which is O(N), but this only happens once. */ |
| 1572 | |
| 1573 | static struct elf64_ia64_dyn_sym_info * |
| 1574 | get_dyn_sym_info (struct elf64_ia64_link_hash_table *ia64_info, |
| 1575 | struct elf_link_hash_entry *h, bfd *abfd, |
| 1576 | const Elf_Internal_Rela *rel, bfd_boolean create) |
| 1577 | { |
| 1578 | struct elf64_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; |
| 1579 | unsigned int *count_p, *sorted_count_p, *size_p; |
| 1580 | unsigned int count, sorted_count, size; |
| 1581 | bfd_vma addend = rel ? rel->r_addend : 0; |
| 1582 | bfd_size_type amt; |
| 1583 | |
| 1584 | if (h) |
| 1585 | { |
| 1586 | struct elf64_ia64_link_hash_entry *global_h; |
| 1587 | |
| 1588 | global_h = (struct elf64_ia64_link_hash_entry *) h; |
| 1589 | info_p = &global_h->info; |
| 1590 | count_p = &global_h->count; |
| 1591 | sorted_count_p = &global_h->sorted_count; |
| 1592 | size_p = &global_h->size; |
| 1593 | } |
| 1594 | else |
| 1595 | { |
| 1596 | struct elf64_ia64_local_hash_entry *loc_h; |
| 1597 | |
| 1598 | loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); |
| 1599 | if (!loc_h) |
| 1600 | { |
| 1601 | BFD_ASSERT (!create); |
| 1602 | return NULL; |
| 1603 | } |
| 1604 | |
| 1605 | info_p = &loc_h->info; |
| 1606 | count_p = &loc_h->count; |
| 1607 | sorted_count_p = &loc_h->sorted_count; |
| 1608 | size_p = &loc_h->size; |
| 1609 | } |
| 1610 | |
| 1611 | count = *count_p; |
| 1612 | sorted_count = *sorted_count_p; |
| 1613 | size = *size_p; |
| 1614 | info = *info_p; |
| 1615 | if (create) |
| 1616 | { |
| 1617 | /* When we create the array, we don't check for duplicates, |
| 1618 | except in the previously sorted section if one exists, and |
| 1619 | against the last inserted entry. This allows insertions to |
| 1620 | be fast. */ |
| 1621 | if (info) |
| 1622 | { |
| 1623 | if (sorted_count) |
| 1624 | { |
| 1625 | /* Try bsearch first on the sorted section. */ |
| 1626 | key.addend = addend; |
| 1627 | dyn_i = bsearch (&key, info, sorted_count, |
| 1628 | sizeof (*info), addend_compare); |
| 1629 | |
| 1630 | if (dyn_i) |
| 1631 | { |
| 1632 | return dyn_i; |
| 1633 | } |
| 1634 | } |
| 1635 | |
| 1636 | /* Do a quick check for the last inserted entry. */ |
| 1637 | dyn_i = info + count - 1; |
| 1638 | if (dyn_i->addend == addend) |
| 1639 | { |
| 1640 | return dyn_i; |
| 1641 | } |
| 1642 | } |
| 1643 | |
| 1644 | if (size == 0) |
| 1645 | { |
| 1646 | /* It is the very first element. We create the array of size |
| 1647 | 1. */ |
| 1648 | size = 1; |
| 1649 | amt = size * sizeof (*info); |
| 1650 | info = bfd_malloc (amt); |
| 1651 | } |
| 1652 | else if (size <= count) |
| 1653 | { |
| 1654 | /* We double the array size every time when we reach the |
| 1655 | size limit. */ |
| 1656 | size += size; |
| 1657 | amt = size * sizeof (*info); |
| 1658 | info = bfd_realloc (info, amt); |
| 1659 | } |
| 1660 | else |
| 1661 | goto has_space; |
| 1662 | |
| 1663 | if (info == NULL) |
| 1664 | return NULL; |
| 1665 | *size_p = size; |
| 1666 | *info_p = info; |
| 1667 | |
| 1668 | has_space: |
| 1669 | /* Append the new one to the array. */ |
| 1670 | dyn_i = info + count; |
| 1671 | memset (dyn_i, 0, sizeof (*dyn_i)); |
| 1672 | dyn_i->got_offset = (bfd_vma) -1; |
| 1673 | dyn_i->addend = addend; |
| 1674 | |
| 1675 | /* We increment count only since the new ones are unsorted and |
| 1676 | may have duplicate. */ |
| 1677 | (*count_p)++; |
| 1678 | } |
| 1679 | else |
| 1680 | { |
| 1681 | /* It is a lookup without insertion. Sort array if part of the |
| 1682 | array isn't sorted. */ |
| 1683 | if (count != sorted_count) |
| 1684 | { |
| 1685 | count = sort_dyn_sym_info (info, count); |
| 1686 | *count_p = count; |
| 1687 | *sorted_count_p = count; |
| 1688 | } |
| 1689 | |
| 1690 | /* Free unused memory. */ |
| 1691 | if (size != count) |
| 1692 | { |
| 1693 | amt = count * sizeof (*info); |
| 1694 | info = bfd_malloc (amt); |
| 1695 | if (info != NULL) |
| 1696 | { |
| 1697 | memcpy (info, *info_p, amt); |
| 1698 | free (*info_p); |
| 1699 | *size_p = count; |
| 1700 | *info_p = info; |
| 1701 | } |
| 1702 | } |
| 1703 | |
| 1704 | key.addend = addend; |
| 1705 | dyn_i = bsearch (&key, info, count, |
| 1706 | sizeof (*info), addend_compare); |
| 1707 | } |
| 1708 | |
| 1709 | return dyn_i; |
| 1710 | } |
| 1711 | |
| 1712 | static asection * |
| 1713 | get_got (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info) |
| 1714 | { |
| 1715 | asection *got; |
| 1716 | bfd *dynobj; |
| 1717 | |
| 1718 | got = ia64_info->root.sgot; |
| 1719 | if (!got) |
| 1720 | { |
| 1721 | flagword flags; |
| 1722 | |
| 1723 | dynobj = ia64_info->root.dynobj; |
| 1724 | if (!dynobj) |
| 1725 | ia64_info->root.dynobj = dynobj = abfd; |
| 1726 | |
| 1727 | /* The .got section is always aligned at 8 bytes. */ |
| 1728 | flags = get_elf_backend_data (dynobj)->dynamic_sec_flags; |
| 1729 | got = bfd_make_section_anyway_with_flags (dynobj, ".got", |
| 1730 | flags | SEC_SMALL_DATA); |
| 1731 | if (got == NULL |
| 1732 | || !bfd_set_section_alignment (got, 3)) |
| 1733 | return NULL; |
| 1734 | ia64_info->root.sgot = got; |
| 1735 | } |
| 1736 | |
| 1737 | return got; |
| 1738 | } |
| 1739 | |
| 1740 | /* Create function descriptor section (.opd). This section is called .opd |
| 1741 | because it contains "official procedure descriptors". The "official" |
| 1742 | refers to the fact that these descriptors are used when taking the address |
| 1743 | of a procedure, thus ensuring a unique address for each procedure. */ |
| 1744 | |
| 1745 | static asection * |
| 1746 | get_fptr (bfd *abfd, struct bfd_link_info *info, |
| 1747 | struct elf64_ia64_link_hash_table *ia64_info) |
| 1748 | { |
| 1749 | asection *fptr; |
| 1750 | bfd *dynobj; |
| 1751 | |
| 1752 | fptr = ia64_info->fptr_sec; |
| 1753 | if (!fptr) |
| 1754 | { |
| 1755 | dynobj = ia64_info->root.dynobj; |
| 1756 | if (!dynobj) |
| 1757 | ia64_info->root.dynobj = dynobj = abfd; |
| 1758 | |
| 1759 | fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd", |
| 1760 | (SEC_ALLOC |
| 1761 | | SEC_LOAD |
| 1762 | | SEC_HAS_CONTENTS |
| 1763 | | SEC_IN_MEMORY |
| 1764 | | (bfd_link_pie (info) ? 0 |
| 1765 | : SEC_READONLY) |
| 1766 | | SEC_LINKER_CREATED)); |
| 1767 | if (!fptr |
| 1768 | || !bfd_set_section_alignment (fptr, 4)) |
| 1769 | { |
| 1770 | BFD_ASSERT (0); |
| 1771 | return NULL; |
| 1772 | } |
| 1773 | |
| 1774 | ia64_info->fptr_sec = fptr; |
| 1775 | |
| 1776 | if (bfd_link_pie (info)) |
| 1777 | { |
| 1778 | asection *fptr_rel; |
| 1779 | fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd", |
| 1780 | (SEC_ALLOC | SEC_LOAD |
| 1781 | | SEC_HAS_CONTENTS |
| 1782 | | SEC_IN_MEMORY |
| 1783 | | SEC_LINKER_CREATED |
| 1784 | | SEC_READONLY)); |
| 1785 | if (fptr_rel == NULL |
| 1786 | || !bfd_set_section_alignment (fptr_rel, 3)) |
| 1787 | { |
| 1788 | BFD_ASSERT (0); |
| 1789 | return NULL; |
| 1790 | } |
| 1791 | |
| 1792 | ia64_info->rel_fptr_sec = fptr_rel; |
| 1793 | } |
| 1794 | } |
| 1795 | |
| 1796 | return fptr; |
| 1797 | } |
| 1798 | |
| 1799 | static asection * |
| 1800 | get_pltoff (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info) |
| 1801 | { |
| 1802 | asection *pltoff; |
| 1803 | bfd *dynobj; |
| 1804 | |
| 1805 | pltoff = ia64_info->pltoff_sec; |
| 1806 | if (!pltoff) |
| 1807 | { |
| 1808 | dynobj = ia64_info->root.dynobj; |
| 1809 | if (!dynobj) |
| 1810 | ia64_info->root.dynobj = dynobj = abfd; |
| 1811 | |
| 1812 | pltoff = bfd_make_section_anyway_with_flags (dynobj, |
| 1813 | ELF_STRING_ia64_pltoff, |
| 1814 | (SEC_ALLOC |
| 1815 | | SEC_LOAD |
| 1816 | | SEC_HAS_CONTENTS |
| 1817 | | SEC_IN_MEMORY |
| 1818 | | SEC_SMALL_DATA |
| 1819 | | SEC_LINKER_CREATED)); |
| 1820 | if (!pltoff |
| 1821 | || !bfd_set_section_alignment (pltoff, 4)) |
| 1822 | { |
| 1823 | BFD_ASSERT (0); |
| 1824 | return NULL; |
| 1825 | } |
| 1826 | |
| 1827 | ia64_info->pltoff_sec = pltoff; |
| 1828 | } |
| 1829 | |
| 1830 | return pltoff; |
| 1831 | } |
| 1832 | |
| 1833 | static asection * |
| 1834 | get_reloc_section (bfd *abfd, |
| 1835 | struct elf64_ia64_link_hash_table *ia64_info, |
| 1836 | asection *sec, bfd_boolean create) |
| 1837 | { |
| 1838 | const char *srel_name; |
| 1839 | asection *srel; |
| 1840 | bfd *dynobj; |
| 1841 | |
| 1842 | srel_name = (bfd_elf_string_from_elf_section |
| 1843 | (abfd, elf_elfheader(abfd)->e_shstrndx, |
| 1844 | _bfd_elf_single_rel_hdr (sec)->sh_name)); |
| 1845 | if (srel_name == NULL) |
| 1846 | return NULL; |
| 1847 | |
| 1848 | BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela") |
| 1849 | && strcmp (bfd_section_name (sec), srel_name+5) == 0) |
| 1850 | || (CONST_STRNEQ (srel_name, ".rel") |
| 1851 | && strcmp (bfd_section_name (sec), srel_name+4) == 0)); |
| 1852 | |
| 1853 | dynobj = ia64_info->root.dynobj; |
| 1854 | if (!dynobj) |
| 1855 | ia64_info->root.dynobj = dynobj = abfd; |
| 1856 | |
| 1857 | srel = bfd_get_linker_section (dynobj, srel_name); |
| 1858 | if (srel == NULL && create) |
| 1859 | { |
| 1860 | srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, |
| 1861 | (SEC_ALLOC | SEC_LOAD |
| 1862 | | SEC_HAS_CONTENTS |
| 1863 | | SEC_IN_MEMORY |
| 1864 | | SEC_LINKER_CREATED |
| 1865 | | SEC_READONLY)); |
| 1866 | if (srel == NULL |
| 1867 | || !bfd_set_section_alignment (srel, 3)) |
| 1868 | return NULL; |
| 1869 | } |
| 1870 | |
| 1871 | return srel; |
| 1872 | } |
| 1873 | |
| 1874 | static bfd_boolean |
| 1875 | count_dyn_reloc (bfd *abfd, struct elf64_ia64_dyn_sym_info *dyn_i, |
| 1876 | asection *srel, int type) |
| 1877 | { |
| 1878 | struct elf64_ia64_dyn_reloc_entry *rent; |
| 1879 | |
| 1880 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) |
| 1881 | if (rent->srel == srel && rent->type == type) |
| 1882 | break; |
| 1883 | |
| 1884 | if (!rent) |
| 1885 | { |
| 1886 | rent = ((struct elf64_ia64_dyn_reloc_entry *) |
| 1887 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); |
| 1888 | if (!rent) |
| 1889 | return FALSE; |
| 1890 | |
| 1891 | rent->next = dyn_i->reloc_entries; |
| 1892 | rent->srel = srel; |
| 1893 | rent->type = type; |
| 1894 | rent->count = 0; |
| 1895 | dyn_i->reloc_entries = rent; |
| 1896 | } |
| 1897 | rent->count++; |
| 1898 | |
| 1899 | return TRUE; |
| 1900 | } |
| 1901 | |
| 1902 | static bfd_boolean |
| 1903 | elf64_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 1904 | asection *sec, |
| 1905 | const Elf_Internal_Rela *relocs) |
| 1906 | { |
| 1907 | struct elf64_ia64_link_hash_table *ia64_info; |
| 1908 | const Elf_Internal_Rela *relend; |
| 1909 | Elf_Internal_Shdr *symtab_hdr; |
| 1910 | const Elf_Internal_Rela *rel; |
| 1911 | asection *got, *fptr, *srel, *pltoff; |
| 1912 | enum { |
| 1913 | NEED_GOT = 1, |
| 1914 | NEED_GOTX = 2, |
| 1915 | NEED_FPTR = 4, |
| 1916 | NEED_PLTOFF = 8, |
| 1917 | NEED_MIN_PLT = 16, |
| 1918 | NEED_FULL_PLT = 32, |
| 1919 | NEED_DYNREL = 64, |
| 1920 | NEED_LTOFF_FPTR = 128 |
| 1921 | }; |
| 1922 | int need_entry; |
| 1923 | struct elf_link_hash_entry *h; |
| 1924 | unsigned long r_symndx; |
| 1925 | bfd_boolean maybe_dynamic; |
| 1926 | |
| 1927 | if (bfd_link_relocatable (info)) |
| 1928 | return TRUE; |
| 1929 | |
| 1930 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1931 | ia64_info = elf64_ia64_hash_table (info); |
| 1932 | if (ia64_info == NULL) |
| 1933 | return FALSE; |
| 1934 | |
| 1935 | got = fptr = srel = pltoff = NULL; |
| 1936 | |
| 1937 | relend = relocs + sec->reloc_count; |
| 1938 | |
| 1939 | /* We scan relocations first to create dynamic relocation arrays. We |
| 1940 | modified get_dyn_sym_info to allow fast insertion and support fast |
| 1941 | lookup in the next loop. */ |
| 1942 | for (rel = relocs; rel < relend; ++rel) |
| 1943 | { |
| 1944 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 1945 | if (r_symndx >= symtab_hdr->sh_info) |
| 1946 | { |
| 1947 | long indx = r_symndx - symtab_hdr->sh_info; |
| 1948 | h = elf_sym_hashes (abfd)[indx]; |
| 1949 | while (h->root.type == bfd_link_hash_indirect |
| 1950 | || h->root.type == bfd_link_hash_warning) |
| 1951 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1952 | } |
| 1953 | else |
| 1954 | h = NULL; |
| 1955 | |
| 1956 | /* We can only get preliminary data on whether a symbol is |
| 1957 | locally or externally defined, as not all of the input files |
| 1958 | have yet been processed. Do something with what we know, as |
| 1959 | this may help reduce memory usage and processing time later. */ |
| 1960 | maybe_dynamic = (h && ((!bfd_link_executable (info) |
| 1961 | && (!SYMBOLIC_BIND (info, h) |
| 1962 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) |
| 1963 | || !h->def_regular |
| 1964 | || h->root.type == bfd_link_hash_defweak)); |
| 1965 | |
| 1966 | need_entry = 0; |
| 1967 | switch (ELF64_R_TYPE (rel->r_info)) |
| 1968 | { |
| 1969 | case R_IA64_TPREL64MSB: |
| 1970 | case R_IA64_TPREL64LSB: |
| 1971 | case R_IA64_LTOFF_TPREL22: |
| 1972 | case R_IA64_DTPREL32MSB: |
| 1973 | case R_IA64_DTPREL32LSB: |
| 1974 | case R_IA64_DTPREL64MSB: |
| 1975 | case R_IA64_DTPREL64LSB: |
| 1976 | case R_IA64_LTOFF_DTPREL22: |
| 1977 | case R_IA64_DTPMOD64MSB: |
| 1978 | case R_IA64_DTPMOD64LSB: |
| 1979 | case R_IA64_LTOFF_DTPMOD22: |
| 1980 | abort (); |
| 1981 | break; |
| 1982 | |
| 1983 | case R_IA64_IPLTMSB: |
| 1984 | case R_IA64_IPLTLSB: |
| 1985 | break; |
| 1986 | |
| 1987 | case R_IA64_LTOFF_FPTR22: |
| 1988 | case R_IA64_LTOFF_FPTR64I: |
| 1989 | case R_IA64_LTOFF_FPTR32MSB: |
| 1990 | case R_IA64_LTOFF_FPTR32LSB: |
| 1991 | case R_IA64_LTOFF_FPTR64MSB: |
| 1992 | case R_IA64_LTOFF_FPTR64LSB: |
| 1993 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; |
| 1994 | break; |
| 1995 | |
| 1996 | case R_IA64_FPTR64I: |
| 1997 | case R_IA64_FPTR32MSB: |
| 1998 | case R_IA64_FPTR32LSB: |
| 1999 | case R_IA64_FPTR64MSB: |
| 2000 | case R_IA64_FPTR64LSB: |
| 2001 | if (bfd_link_pic (info) || h) |
| 2002 | need_entry = NEED_FPTR | NEED_DYNREL; |
| 2003 | else |
| 2004 | need_entry = NEED_FPTR; |
| 2005 | break; |
| 2006 | |
| 2007 | case R_IA64_LTOFF22: |
| 2008 | case R_IA64_LTOFF64I: |
| 2009 | need_entry = NEED_GOT; |
| 2010 | break; |
| 2011 | |
| 2012 | case R_IA64_LTOFF22X: |
| 2013 | need_entry = NEED_GOTX; |
| 2014 | break; |
| 2015 | |
| 2016 | case R_IA64_PLTOFF22: |
| 2017 | case R_IA64_PLTOFF64I: |
| 2018 | case R_IA64_PLTOFF64MSB: |
| 2019 | case R_IA64_PLTOFF64LSB: |
| 2020 | need_entry = NEED_PLTOFF; |
| 2021 | if (h) |
| 2022 | { |
| 2023 | if (maybe_dynamic) |
| 2024 | need_entry |= NEED_MIN_PLT; |
| 2025 | } |
| 2026 | else |
| 2027 | { |
| 2028 | (*info->callbacks->warning) |
| 2029 | (info, _("@pltoff reloc against local symbol"), 0, |
| 2030 | abfd, 0, (bfd_vma) 0); |
| 2031 | } |
| 2032 | break; |
| 2033 | |
| 2034 | case R_IA64_PCREL21B: |
| 2035 | case R_IA64_PCREL60B: |
| 2036 | /* Depending on where this symbol is defined, we may or may not |
| 2037 | need a full plt entry. Only skip if we know we'll not need |
| 2038 | the entry -- static or symbolic, and the symbol definition |
| 2039 | has already been seen. */ |
| 2040 | if (maybe_dynamic && rel->r_addend == 0) |
| 2041 | need_entry = NEED_FULL_PLT; |
| 2042 | break; |
| 2043 | |
| 2044 | case R_IA64_IMM14: |
| 2045 | case R_IA64_IMM22: |
| 2046 | case R_IA64_IMM64: |
| 2047 | case R_IA64_DIR32MSB: |
| 2048 | case R_IA64_DIR32LSB: |
| 2049 | case R_IA64_DIR64MSB: |
| 2050 | case R_IA64_DIR64LSB: |
| 2051 | /* Shared objects will always need at least a REL relocation. */ |
| 2052 | if (bfd_link_pic (info) || maybe_dynamic) |
| 2053 | need_entry = NEED_DYNREL; |
| 2054 | break; |
| 2055 | |
| 2056 | case R_IA64_PCREL22: |
| 2057 | case R_IA64_PCREL64I: |
| 2058 | case R_IA64_PCREL32MSB: |
| 2059 | case R_IA64_PCREL32LSB: |
| 2060 | case R_IA64_PCREL64MSB: |
| 2061 | case R_IA64_PCREL64LSB: |
| 2062 | if (maybe_dynamic) |
| 2063 | need_entry = NEED_DYNREL; |
| 2064 | break; |
| 2065 | } |
| 2066 | |
| 2067 | if (!need_entry) |
| 2068 | continue; |
| 2069 | |
| 2070 | if ((need_entry & NEED_FPTR) != 0 |
| 2071 | && rel->r_addend) |
| 2072 | { |
| 2073 | (*info->callbacks->warning) |
| 2074 | (info, _("non-zero addend in @fptr reloc"), 0, |
| 2075 | abfd, 0, (bfd_vma) 0); |
| 2076 | } |
| 2077 | |
| 2078 | if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) |
| 2079 | return FALSE; |
| 2080 | } |
| 2081 | |
| 2082 | /* Now, we only do lookup without insertion, which is very fast |
| 2083 | with the modified get_dyn_sym_info. */ |
| 2084 | for (rel = relocs; rel < relend; ++rel) |
| 2085 | { |
| 2086 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 2087 | int dynrel_type = R_IA64_NONE; |
| 2088 | |
| 2089 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 2090 | if (r_symndx >= symtab_hdr->sh_info) |
| 2091 | { |
| 2092 | /* We're dealing with a global symbol -- find its hash entry |
| 2093 | and mark it as being referenced. */ |
| 2094 | long indx = r_symndx - symtab_hdr->sh_info; |
| 2095 | h = elf_sym_hashes (abfd)[indx]; |
| 2096 | while (h->root.type == bfd_link_hash_indirect |
| 2097 | || h->root.type == bfd_link_hash_warning) |
| 2098 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2099 | |
| 2100 | /* PR15323, ref flags aren't set for references in the same |
| 2101 | object. */ |
| 2102 | h->ref_regular = 1; |
| 2103 | } |
| 2104 | else |
| 2105 | h = NULL; |
| 2106 | |
| 2107 | /* We can only get preliminary data on whether a symbol is |
| 2108 | locally or externally defined, as not all of the input files |
| 2109 | have yet been processed. Do something with what we know, as |
| 2110 | this may help reduce memory usage and processing time later. */ |
| 2111 | maybe_dynamic = (h && ((!bfd_link_executable (info) |
| 2112 | && (!SYMBOLIC_BIND (info, h) |
| 2113 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) |
| 2114 | || !h->def_regular |
| 2115 | || h->root.type == bfd_link_hash_defweak)); |
| 2116 | |
| 2117 | need_entry = 0; |
| 2118 | switch (ELF64_R_TYPE (rel->r_info)) |
| 2119 | { |
| 2120 | case R_IA64_TPREL64MSB: |
| 2121 | case R_IA64_TPREL64LSB: |
| 2122 | case R_IA64_LTOFF_TPREL22: |
| 2123 | case R_IA64_DTPREL32MSB: |
| 2124 | case R_IA64_DTPREL32LSB: |
| 2125 | case R_IA64_DTPREL64MSB: |
| 2126 | case R_IA64_DTPREL64LSB: |
| 2127 | case R_IA64_LTOFF_DTPREL22: |
| 2128 | case R_IA64_DTPMOD64MSB: |
| 2129 | case R_IA64_DTPMOD64LSB: |
| 2130 | case R_IA64_LTOFF_DTPMOD22: |
| 2131 | abort (); |
| 2132 | break; |
| 2133 | |
| 2134 | case R_IA64_LTOFF_FPTR22: |
| 2135 | case R_IA64_LTOFF_FPTR64I: |
| 2136 | case R_IA64_LTOFF_FPTR32MSB: |
| 2137 | case R_IA64_LTOFF_FPTR32LSB: |
| 2138 | case R_IA64_LTOFF_FPTR64MSB: |
| 2139 | case R_IA64_LTOFF_FPTR64LSB: |
| 2140 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; |
| 2141 | break; |
| 2142 | |
| 2143 | case R_IA64_FPTR64I: |
| 2144 | case R_IA64_FPTR32MSB: |
| 2145 | case R_IA64_FPTR32LSB: |
| 2146 | case R_IA64_FPTR64MSB: |
| 2147 | case R_IA64_FPTR64LSB: |
| 2148 | if (bfd_link_pic (info) || h) |
| 2149 | need_entry = NEED_FPTR | NEED_DYNREL; |
| 2150 | else |
| 2151 | need_entry = NEED_FPTR; |
| 2152 | dynrel_type = R_IA64_FPTR64LSB; |
| 2153 | break; |
| 2154 | |
| 2155 | case R_IA64_LTOFF22: |
| 2156 | case R_IA64_LTOFF64I: |
| 2157 | need_entry = NEED_GOT; |
| 2158 | break; |
| 2159 | |
| 2160 | case R_IA64_LTOFF22X: |
| 2161 | need_entry = NEED_GOTX; |
| 2162 | break; |
| 2163 | |
| 2164 | case R_IA64_PLTOFF22: |
| 2165 | case R_IA64_PLTOFF64I: |
| 2166 | case R_IA64_PLTOFF64MSB: |
| 2167 | case R_IA64_PLTOFF64LSB: |
| 2168 | need_entry = NEED_PLTOFF; |
| 2169 | if (h) |
| 2170 | { |
| 2171 | if (maybe_dynamic) |
| 2172 | need_entry |= NEED_MIN_PLT; |
| 2173 | } |
| 2174 | break; |
| 2175 | |
| 2176 | case R_IA64_PCREL21B: |
| 2177 | case R_IA64_PCREL60B: |
| 2178 | /* Depending on where this symbol is defined, we may or may not |
| 2179 | need a full plt entry. Only skip if we know we'll not need |
| 2180 | the entry -- static or symbolic, and the symbol definition |
| 2181 | has already been seen. */ |
| 2182 | if (maybe_dynamic && rel->r_addend == 0) |
| 2183 | need_entry = NEED_FULL_PLT; |
| 2184 | break; |
| 2185 | |
| 2186 | case R_IA64_IMM14: |
| 2187 | case R_IA64_IMM22: |
| 2188 | case R_IA64_IMM64: |
| 2189 | case R_IA64_DIR32MSB: |
| 2190 | case R_IA64_DIR32LSB: |
| 2191 | case R_IA64_DIR64MSB: |
| 2192 | case R_IA64_DIR64LSB: |
| 2193 | /* Shared objects will always need at least a REL relocation. */ |
| 2194 | if (bfd_link_pic (info) || maybe_dynamic) |
| 2195 | need_entry = NEED_DYNREL; |
| 2196 | dynrel_type = R_IA64_DIR64LSB; |
| 2197 | break; |
| 2198 | |
| 2199 | case R_IA64_IPLTMSB: |
| 2200 | case R_IA64_IPLTLSB: |
| 2201 | break; |
| 2202 | |
| 2203 | case R_IA64_PCREL22: |
| 2204 | case R_IA64_PCREL64I: |
| 2205 | case R_IA64_PCREL32MSB: |
| 2206 | case R_IA64_PCREL32LSB: |
| 2207 | case R_IA64_PCREL64MSB: |
| 2208 | case R_IA64_PCREL64LSB: |
| 2209 | if (maybe_dynamic) |
| 2210 | need_entry = NEED_DYNREL; |
| 2211 | dynrel_type = R_IA64_PCREL64LSB; |
| 2212 | break; |
| 2213 | } |
| 2214 | |
| 2215 | if (!need_entry) |
| 2216 | continue; |
| 2217 | |
| 2218 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); |
| 2219 | |
| 2220 | /* Record whether or not this is a local symbol. */ |
| 2221 | dyn_i->h = h; |
| 2222 | |
| 2223 | /* Create what's needed. */ |
| 2224 | if (need_entry & (NEED_GOT | NEED_GOTX)) |
| 2225 | { |
| 2226 | if (!got) |
| 2227 | { |
| 2228 | got = get_got (abfd, ia64_info); |
| 2229 | if (!got) |
| 2230 | return FALSE; |
| 2231 | } |
| 2232 | if (need_entry & NEED_GOT) |
| 2233 | dyn_i->want_got = 1; |
| 2234 | if (need_entry & NEED_GOTX) |
| 2235 | dyn_i->want_gotx = 1; |
| 2236 | } |
| 2237 | if (need_entry & NEED_FPTR) |
| 2238 | { |
| 2239 | /* Create the .opd section. */ |
| 2240 | if (!fptr) |
| 2241 | { |
| 2242 | fptr = get_fptr (abfd, info, ia64_info); |
| 2243 | if (!fptr) |
| 2244 | return FALSE; |
| 2245 | } |
| 2246 | dyn_i->want_fptr = 1; |
| 2247 | } |
| 2248 | if (need_entry & NEED_LTOFF_FPTR) |
| 2249 | dyn_i->want_ltoff_fptr = 1; |
| 2250 | if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) |
| 2251 | { |
| 2252 | if (!ia64_info->root.dynobj) |
| 2253 | ia64_info->root.dynobj = abfd; |
| 2254 | h->needs_plt = 1; |
| 2255 | dyn_i->want_plt = 1; |
| 2256 | } |
| 2257 | if (need_entry & NEED_FULL_PLT) |
| 2258 | dyn_i->want_plt2 = 1; |
| 2259 | if (need_entry & NEED_PLTOFF) |
| 2260 | { |
| 2261 | /* This is needed here, in case @pltoff is used in a non-shared |
| 2262 | link. */ |
| 2263 | if (!pltoff) |
| 2264 | { |
| 2265 | pltoff = get_pltoff (abfd, ia64_info); |
| 2266 | if (!pltoff) |
| 2267 | return FALSE; |
| 2268 | } |
| 2269 | |
| 2270 | dyn_i->want_pltoff = 1; |
| 2271 | } |
| 2272 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) |
| 2273 | { |
| 2274 | if (!srel) |
| 2275 | { |
| 2276 | srel = get_reloc_section (abfd, ia64_info, sec, TRUE); |
| 2277 | if (!srel) |
| 2278 | return FALSE; |
| 2279 | } |
| 2280 | if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type)) |
| 2281 | return FALSE; |
| 2282 | } |
| 2283 | } |
| 2284 | |
| 2285 | return TRUE; |
| 2286 | } |
| 2287 | |
| 2288 | /* For cleanliness, and potentially faster dynamic loading, allocate |
| 2289 | external GOT entries first. */ |
| 2290 | |
| 2291 | static bfd_boolean |
| 2292 | allocate_global_data_got (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2293 | void * data) |
| 2294 | { |
| 2295 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2296 | |
| 2297 | if ((dyn_i->want_got || dyn_i->want_gotx) |
| 2298 | && ! dyn_i->want_fptr |
| 2299 | && elf64_ia64_dynamic_symbol_p (dyn_i->h)) |
| 2300 | { |
| 2301 | /* GOT entry with FPTR is done by allocate_global_fptr_got. */ |
| 2302 | dyn_i->got_offset = x->ofs; |
| 2303 | x->ofs += 8; |
| 2304 | } |
| 2305 | return TRUE; |
| 2306 | } |
| 2307 | |
| 2308 | /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ |
| 2309 | |
| 2310 | static bfd_boolean |
| 2311 | allocate_global_fptr_got (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2312 | void * data) |
| 2313 | { |
| 2314 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2315 | |
| 2316 | if (dyn_i->want_got |
| 2317 | && dyn_i->want_fptr |
| 2318 | && elf64_ia64_dynamic_symbol_p (dyn_i->h)) |
| 2319 | { |
| 2320 | dyn_i->got_offset = x->ofs; |
| 2321 | x->ofs += 8; |
| 2322 | } |
| 2323 | return TRUE; |
| 2324 | } |
| 2325 | |
| 2326 | /* Lastly, allocate all the GOT entries for local data. */ |
| 2327 | |
| 2328 | static bfd_boolean |
| 2329 | allocate_local_got (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2330 | void * data) |
| 2331 | { |
| 2332 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data; |
| 2333 | |
| 2334 | if ((dyn_i->want_got || dyn_i->want_gotx) |
| 2335 | && !elf64_ia64_dynamic_symbol_p (dyn_i->h)) |
| 2336 | { |
| 2337 | dyn_i->got_offset = x->ofs; |
| 2338 | x->ofs += 8; |
| 2339 | } |
| 2340 | return TRUE; |
| 2341 | } |
| 2342 | |
| 2343 | /* Allocate function descriptors. We can do these for every function |
| 2344 | in a main executable that is not exported. */ |
| 2345 | |
| 2346 | static bfd_boolean |
| 2347 | allocate_fptr (struct elf64_ia64_dyn_sym_info *dyn_i, void * data) |
| 2348 | { |
| 2349 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data; |
| 2350 | |
| 2351 | if (dyn_i->want_fptr) |
| 2352 | { |
| 2353 | struct elf_link_hash_entry *h = dyn_i->h; |
| 2354 | |
| 2355 | if (h) |
| 2356 | while (h->root.type == bfd_link_hash_indirect |
| 2357 | || h->root.type == bfd_link_hash_warning) |
| 2358 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2359 | |
| 2360 | if (h == NULL || !h->def_dynamic) |
| 2361 | { |
| 2362 | /* A non dynamic symbol. */ |
| 2363 | dyn_i->fptr_offset = x->ofs; |
| 2364 | x->ofs += 16; |
| 2365 | } |
| 2366 | else |
| 2367 | dyn_i->want_fptr = 0; |
| 2368 | } |
| 2369 | return TRUE; |
| 2370 | } |
| 2371 | |
| 2372 | /* Allocate all the minimal PLT entries. */ |
| 2373 | |
| 2374 | static bfd_boolean |
| 2375 | allocate_plt_entries (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2376 | void * data ATTRIBUTE_UNUSED) |
| 2377 | { |
| 2378 | if (dyn_i->want_plt) |
| 2379 | { |
| 2380 | struct elf_link_hash_entry *h = dyn_i->h; |
| 2381 | |
| 2382 | if (h) |
| 2383 | while (h->root.type == bfd_link_hash_indirect |
| 2384 | || h->root.type == bfd_link_hash_warning) |
| 2385 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2386 | |
| 2387 | /* ??? Versioned symbols seem to lose NEEDS_PLT. */ |
| 2388 | if (elf64_ia64_dynamic_symbol_p (h)) |
| 2389 | { |
| 2390 | dyn_i->want_pltoff = 1; |
| 2391 | } |
| 2392 | else |
| 2393 | { |
| 2394 | dyn_i->want_plt = 0; |
| 2395 | dyn_i->want_plt2 = 0; |
| 2396 | } |
| 2397 | } |
| 2398 | return TRUE; |
| 2399 | } |
| 2400 | |
| 2401 | /* Allocate all the full PLT entries. */ |
| 2402 | |
| 2403 | static bfd_boolean |
| 2404 | allocate_plt2_entries (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2405 | void * data) |
| 2406 | { |
| 2407 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2408 | |
| 2409 | if (dyn_i->want_plt2) |
| 2410 | { |
| 2411 | struct elf_link_hash_entry *h = dyn_i->h; |
| 2412 | bfd_size_type ofs = x->ofs; |
| 2413 | |
| 2414 | dyn_i->plt2_offset = ofs; |
| 2415 | x->ofs = ofs + PLT_FULL_ENTRY_SIZE; |
| 2416 | |
| 2417 | while (h->root.type == bfd_link_hash_indirect |
| 2418 | || h->root.type == bfd_link_hash_warning) |
| 2419 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2420 | dyn_i->h->plt.offset = ofs; |
| 2421 | } |
| 2422 | return TRUE; |
| 2423 | } |
| 2424 | |
| 2425 | /* Allocate all the PLTOFF entries requested by relocations and |
| 2426 | plt entries. We can't share space with allocated FPTR entries, |
| 2427 | because the latter are not necessarily addressable by the GP. |
| 2428 | ??? Relaxation might be able to determine that they are. */ |
| 2429 | |
| 2430 | static bfd_boolean |
| 2431 | allocate_pltoff_entries (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2432 | void * data) |
| 2433 | { |
| 2434 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2435 | |
| 2436 | if (dyn_i->want_pltoff) |
| 2437 | { |
| 2438 | dyn_i->pltoff_offset = x->ofs; |
| 2439 | x->ofs += 16; |
| 2440 | } |
| 2441 | return TRUE; |
| 2442 | } |
| 2443 | |
| 2444 | /* Allocate dynamic relocations for those symbols that turned out |
| 2445 | to be dynamic. */ |
| 2446 | |
| 2447 | static bfd_boolean |
| 2448 | allocate_dynrel_entries (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2449 | void * data) |
| 2450 | { |
| 2451 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2452 | struct elf64_ia64_link_hash_table *ia64_info; |
| 2453 | struct elf64_ia64_dyn_reloc_entry *rent; |
| 2454 | bfd_boolean dynamic_symbol, shared, resolved_zero; |
| 2455 | struct elf64_ia64_link_hash_entry *h_ia64; |
| 2456 | |
| 2457 | ia64_info = elf64_ia64_hash_table (x->info); |
| 2458 | if (ia64_info == NULL) |
| 2459 | return FALSE; |
| 2460 | |
| 2461 | /* Note that this can't be used in relation to FPTR relocs below. */ |
| 2462 | dynamic_symbol = elf64_ia64_dynamic_symbol_p (dyn_i->h); |
| 2463 | |
| 2464 | shared = bfd_link_pic (x->info); |
| 2465 | resolved_zero = (dyn_i->h |
| 2466 | && ELF_ST_VISIBILITY (dyn_i->h->other) |
| 2467 | && dyn_i->h->root.type == bfd_link_hash_undefweak); |
| 2468 | |
| 2469 | /* Take care of the GOT and PLT relocations. */ |
| 2470 | |
| 2471 | if ((!resolved_zero |
| 2472 | && (dynamic_symbol || shared) |
| 2473 | && (dyn_i->want_got || dyn_i->want_gotx)) |
| 2474 | || (dyn_i->want_ltoff_fptr |
| 2475 | && dyn_i->h |
| 2476 | && dyn_i->h->def_dynamic)) |
| 2477 | { |
| 2478 | /* VMS: FIX64. */ |
| 2479 | if (dyn_i->h != NULL && dyn_i->h->def_dynamic) |
| 2480 | { |
| 2481 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; |
| 2482 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += |
| 2483 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2484 | ia64_info->fixups_sec->size += |
| 2485 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2486 | } |
| 2487 | } |
| 2488 | |
| 2489 | if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) |
| 2490 | { |
| 2491 | /* VMS: only image reloc. */ |
| 2492 | if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) |
| 2493 | ia64_info->rel_fptr_sec->size += sizeof (Elf64_External_Rela); |
| 2494 | } |
| 2495 | |
| 2496 | if (!resolved_zero && dyn_i->want_pltoff) |
| 2497 | { |
| 2498 | /* VMS: FIXFD. */ |
| 2499 | if (dyn_i->h != NULL && dyn_i->h->def_dynamic) |
| 2500 | { |
| 2501 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; |
| 2502 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += |
| 2503 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2504 | ia64_info->fixups_sec->size += |
| 2505 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2506 | } |
| 2507 | } |
| 2508 | |
| 2509 | /* Take care of the normal data relocations. */ |
| 2510 | |
| 2511 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) |
| 2512 | { |
| 2513 | int count = rent->count; |
| 2514 | |
| 2515 | switch (rent->type) |
| 2516 | { |
| 2517 | case R_IA64_FPTR32LSB: |
| 2518 | case R_IA64_FPTR64LSB: |
| 2519 | /* Allocate one iff !want_fptr and not PIE, which by this point |
| 2520 | will be true only if we're actually allocating one statically |
| 2521 | in the main executable. Position independent executables |
| 2522 | need a relative reloc. */ |
| 2523 | if (dyn_i->want_fptr && !bfd_link_pie (x->info)) |
| 2524 | continue; |
| 2525 | break; |
| 2526 | case R_IA64_PCREL32LSB: |
| 2527 | case R_IA64_PCREL64LSB: |
| 2528 | if (!dynamic_symbol) |
| 2529 | continue; |
| 2530 | break; |
| 2531 | case R_IA64_DIR32LSB: |
| 2532 | case R_IA64_DIR64LSB: |
| 2533 | if (!dynamic_symbol && !shared) |
| 2534 | continue; |
| 2535 | break; |
| 2536 | case R_IA64_IPLTLSB: |
| 2537 | if (!dynamic_symbol && !shared) |
| 2538 | continue; |
| 2539 | /* Use two REL relocations for IPLT relocations |
| 2540 | against local symbols. */ |
| 2541 | if (!dynamic_symbol) |
| 2542 | count *= 2; |
| 2543 | break; |
| 2544 | case R_IA64_DTPREL32LSB: |
| 2545 | case R_IA64_TPREL64LSB: |
| 2546 | case R_IA64_DTPREL64LSB: |
| 2547 | case R_IA64_DTPMOD64LSB: |
| 2548 | break; |
| 2549 | default: |
| 2550 | abort (); |
| 2551 | } |
| 2552 | |
| 2553 | /* Add a fixup. */ |
| 2554 | if (!dynamic_symbol) |
| 2555 | abort (); |
| 2556 | |
| 2557 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; |
| 2558 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += |
| 2559 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2560 | ia64_info->fixups_sec->size += |
| 2561 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2562 | } |
| 2563 | |
| 2564 | return TRUE; |
| 2565 | } |
| 2566 | |
| 2567 | static bfd_boolean |
| 2568 | elf64_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 2569 | struct elf_link_hash_entry *h) |
| 2570 | { |
| 2571 | /* ??? Undefined symbols with PLT entries should be re-defined |
| 2572 | to be the PLT entry. */ |
| 2573 | |
| 2574 | /* If this is a weak symbol, and there is a real definition, the |
| 2575 | processor independent code will have arranged for us to see the |
| 2576 | real definition first, and we can just use the same value. */ |
| 2577 | if (h->is_weakalias) |
| 2578 | { |
| 2579 | struct elf_link_hash_entry *def = weakdef (h); |
| 2580 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); |
| 2581 | h->root.u.def.section = def->root.u.def.section; |
| 2582 | h->root.u.def.value = def->root.u.def.value; |
| 2583 | return TRUE; |
| 2584 | } |
| 2585 | |
| 2586 | /* If this is a reference to a symbol defined by a dynamic object which |
| 2587 | is not a function, we might allocate the symbol in our .dynbss section |
| 2588 | and allocate a COPY dynamic relocation. |
| 2589 | |
| 2590 | But IA-64 code is canonically PIC, so as a rule we can avoid this sort |
| 2591 | of hackery. */ |
| 2592 | |
| 2593 | return TRUE; |
| 2594 | } |
| 2595 | |
| 2596 | static bfd_boolean |
| 2597 | elf64_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2598 | struct bfd_link_info *info) |
| 2599 | { |
| 2600 | struct elf64_ia64_allocate_data data; |
| 2601 | struct elf64_ia64_link_hash_table *ia64_info; |
| 2602 | asection *sec; |
| 2603 | bfd *dynobj; |
| 2604 | struct elf_link_hash_table *hash_table; |
| 2605 | |
| 2606 | hash_table = elf_hash_table (info); |
| 2607 | dynobj = hash_table->dynobj; |
| 2608 | ia64_info = elf64_ia64_hash_table (info); |
| 2609 | if (ia64_info == NULL) |
| 2610 | return FALSE; |
| 2611 | BFD_ASSERT(dynobj != NULL); |
| 2612 | data.info = info; |
| 2613 | |
| 2614 | /* Allocate the GOT entries. */ |
| 2615 | |
| 2616 | if (ia64_info->root.sgot) |
| 2617 | { |
| 2618 | data.ofs = 0; |
| 2619 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); |
| 2620 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); |
| 2621 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); |
| 2622 | ia64_info->root.sgot->size = data.ofs; |
| 2623 | } |
| 2624 | |
| 2625 | /* Allocate the FPTR entries. */ |
| 2626 | |
| 2627 | if (ia64_info->fptr_sec) |
| 2628 | { |
| 2629 | data.ofs = 0; |
| 2630 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); |
| 2631 | ia64_info->fptr_sec->size = data.ofs; |
| 2632 | } |
| 2633 | |
| 2634 | /* Now that we've seen all of the input files, we can decide which |
| 2635 | symbols need plt entries. Allocate the minimal PLT entries first. |
| 2636 | We do this even though dynamic_sections_created may be FALSE, because |
| 2637 | this has the side-effect of clearing want_plt and want_plt2. */ |
| 2638 | |
| 2639 | data.ofs = 0; |
| 2640 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); |
| 2641 | |
| 2642 | /* Align the pointer for the plt2 entries. */ |
| 2643 | data.ofs = (data.ofs + 31) & (bfd_vma) -32; |
| 2644 | |
| 2645 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); |
| 2646 | if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) |
| 2647 | { |
| 2648 | /* FIXME: we always reserve the memory for dynamic linker even if |
| 2649 | there are no PLT entries since dynamic linker may assume the |
| 2650 | reserved memory always exists. */ |
| 2651 | |
| 2652 | BFD_ASSERT (ia64_info->root.dynamic_sections_created); |
| 2653 | |
| 2654 | ia64_info->root.splt->size = data.ofs; |
| 2655 | } |
| 2656 | |
| 2657 | /* Allocate the PLTOFF entries. */ |
| 2658 | |
| 2659 | if (ia64_info->pltoff_sec) |
| 2660 | { |
| 2661 | data.ofs = 0; |
| 2662 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); |
| 2663 | ia64_info->pltoff_sec->size = data.ofs; |
| 2664 | } |
| 2665 | |
| 2666 | if (ia64_info->root.dynamic_sections_created) |
| 2667 | { |
| 2668 | /* Allocate space for the dynamic relocations that turned out to be |
| 2669 | required. */ |
| 2670 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); |
| 2671 | } |
| 2672 | |
| 2673 | /* We have now determined the sizes of the various dynamic sections. |
| 2674 | Allocate memory for them. */ |
| 2675 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) |
| 2676 | { |
| 2677 | bfd_boolean strip; |
| 2678 | |
| 2679 | if (!(sec->flags & SEC_LINKER_CREATED)) |
| 2680 | continue; |
| 2681 | |
| 2682 | /* If we don't need this section, strip it from the output file. |
| 2683 | There were several sections primarily related to dynamic |
| 2684 | linking that must be create before the linker maps input |
| 2685 | sections to output sections. The linker does that before |
| 2686 | bfd_elf_size_dynamic_sections is called, and it is that |
| 2687 | function which decides whether anything needs to go into |
| 2688 | these sections. */ |
| 2689 | |
| 2690 | strip = (sec->size == 0); |
| 2691 | |
| 2692 | if (sec == ia64_info->root.sgot) |
| 2693 | strip = FALSE; |
| 2694 | else if (sec == ia64_info->root.srelgot) |
| 2695 | { |
| 2696 | if (strip) |
| 2697 | ia64_info->root.srelgot = NULL; |
| 2698 | else |
| 2699 | /* We use the reloc_count field as a counter if we need to |
| 2700 | copy relocs into the output file. */ |
| 2701 | sec->reloc_count = 0; |
| 2702 | } |
| 2703 | else if (sec == ia64_info->fptr_sec) |
| 2704 | { |
| 2705 | if (strip) |
| 2706 | ia64_info->fptr_sec = NULL; |
| 2707 | } |
| 2708 | else if (sec == ia64_info->rel_fptr_sec) |
| 2709 | { |
| 2710 | if (strip) |
| 2711 | ia64_info->rel_fptr_sec = NULL; |
| 2712 | else |
| 2713 | /* We use the reloc_count field as a counter if we need to |
| 2714 | copy relocs into the output file. */ |
| 2715 | sec->reloc_count = 0; |
| 2716 | } |
| 2717 | else if (sec == ia64_info->root.splt) |
| 2718 | { |
| 2719 | if (strip) |
| 2720 | ia64_info->root.splt = NULL; |
| 2721 | } |
| 2722 | else if (sec == ia64_info->pltoff_sec) |
| 2723 | { |
| 2724 | if (strip) |
| 2725 | ia64_info->pltoff_sec = NULL; |
| 2726 | } |
| 2727 | else if (sec == ia64_info->fixups_sec) |
| 2728 | { |
| 2729 | if (strip) |
| 2730 | ia64_info->fixups_sec = NULL; |
| 2731 | } |
| 2732 | else if (sec == ia64_info->transfer_sec) |
| 2733 | { |
| 2734 | ; |
| 2735 | } |
| 2736 | else |
| 2737 | { |
| 2738 | const char *name; |
| 2739 | |
| 2740 | /* It's OK to base decisions on the section name, because none |
| 2741 | of the dynobj section names depend upon the input files. */ |
| 2742 | name = bfd_section_name (sec); |
| 2743 | |
| 2744 | if (strcmp (name, ".got.plt") == 0) |
| 2745 | strip = FALSE; |
| 2746 | else if (CONST_STRNEQ (name, ".rel")) |
| 2747 | { |
| 2748 | if (!strip) |
| 2749 | { |
| 2750 | /* We use the reloc_count field as a counter if we need to |
| 2751 | copy relocs into the output file. */ |
| 2752 | sec->reloc_count = 0; |
| 2753 | } |
| 2754 | } |
| 2755 | else |
| 2756 | continue; |
| 2757 | } |
| 2758 | |
| 2759 | if (strip) |
| 2760 | sec->flags |= SEC_EXCLUDE; |
| 2761 | else |
| 2762 | { |
| 2763 | /* Allocate memory for the section contents. */ |
| 2764 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); |
| 2765 | if (sec->contents == NULL && sec->size != 0) |
| 2766 | return FALSE; |
| 2767 | } |
| 2768 | } |
| 2769 | |
| 2770 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2771 | { |
| 2772 | bfd *abfd; |
| 2773 | asection *dynsec; |
| 2774 | asection *dynstrsec; |
| 2775 | Elf_Internal_Dyn dyn; |
| 2776 | const struct elf_backend_data *bed; |
| 2777 | unsigned int shl_num = 0; |
| 2778 | bfd_vma fixups_off = 0; |
| 2779 | bfd_vma strdyn_off; |
| 2780 | unsigned int time_hi, time_lo; |
| 2781 | |
| 2782 | /* The .dynamic section must exist and be empty. */ |
| 2783 | dynsec = bfd_get_linker_section (hash_table->dynobj, ".dynamic"); |
| 2784 | BFD_ASSERT (dynsec != NULL); |
| 2785 | BFD_ASSERT (dynsec->size == 0); |
| 2786 | |
| 2787 | dynstrsec = bfd_get_linker_section (hash_table->dynobj, ".vmsdynstr"); |
| 2788 | BFD_ASSERT (dynstrsec != NULL); |
| 2789 | BFD_ASSERT (dynstrsec->size == 0); |
| 2790 | dynstrsec->size = 1; /* Initial blank. */ |
| 2791 | |
| 2792 | /* Ident + link time. */ |
| 2793 | vms_get_time (&time_hi, &time_lo); |
| 2794 | |
| 2795 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_IDENT, 0)) |
| 2796 | return FALSE; |
| 2797 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LINKTIME, |
| 2798 | (((bfd_uint64_t)time_hi) << 32) |
| 2799 | + time_lo)) |
| 2800 | return FALSE; |
| 2801 | |
| 2802 | /* Strtab. */ |
| 2803 | strdyn_off = dynsec->size; |
| 2804 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_STRTAB_OFFSET, 0)) |
| 2805 | return FALSE; |
| 2806 | if (!_bfd_elf_add_dynamic_entry (info, DT_STRSZ, 0)) |
| 2807 | return FALSE; |
| 2808 | |
| 2809 | /* PLTGOT */ |
| 2810 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_SEG, 0)) |
| 2811 | return FALSE; |
| 2812 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_OFFSET, 0)) |
| 2813 | return FALSE; |
| 2814 | |
| 2815 | /* Misc. */ |
| 2816 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FPMODE, 0x9800000)) |
| 2817 | return FALSE; |
| 2818 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LNKFLAGS, |
| 2819 | VMS_LF_IMGSTA | VMS_LF_MAIN)) |
| 2820 | return FALSE; |
| 2821 | |
| 2822 | /* Add entries for shared libraries. */ |
| 2823 | for (abfd = info->input_bfds; abfd; abfd = abfd->link.next) |
| 2824 | { |
| 2825 | char *soname; |
| 2826 | size_t soname_len; |
| 2827 | bfd_size_type strindex; |
| 2828 | bfd_byte *newcontents; |
| 2829 | bfd_vma fixups_shl_off; |
| 2830 | |
| 2831 | if (!(abfd->flags & DYNAMIC)) |
| 2832 | continue; |
| 2833 | BFD_ASSERT (abfd->xvec == output_bfd->xvec); |
| 2834 | |
| 2835 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_NEEDED_IDENT, |
| 2836 | elf_ia64_vms_ident (abfd))) |
| 2837 | return FALSE; |
| 2838 | |
| 2839 | soname = vms_get_module_name (bfd_get_filename (abfd), TRUE); |
| 2840 | if (soname == NULL) |
| 2841 | return FALSE; |
| 2842 | strindex = dynstrsec->size; |
| 2843 | soname_len = strlen (soname) + 1; |
| 2844 | newcontents = (bfd_byte *) bfd_realloc (dynstrsec->contents, |
| 2845 | strindex + soname_len); |
| 2846 | if (newcontents == NULL) |
| 2847 | return FALSE; |
| 2848 | memcpy (newcontents + strindex, soname, soname_len); |
| 2849 | dynstrsec->size += soname_len; |
| 2850 | dynstrsec->contents = newcontents; |
| 2851 | |
| 2852 | if (!_bfd_elf_add_dynamic_entry (info, DT_NEEDED, strindex)) |
| 2853 | return FALSE; |
| 2854 | |
| 2855 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_NEEDED, |
| 2856 | shl_num)) |
| 2857 | return FALSE; |
| 2858 | shl_num++; |
| 2859 | |
| 2860 | /* The fixups_off was in fact containing the size of the fixup |
| 2861 | section. Remap into the offset. */ |
| 2862 | fixups_shl_off = elf_ia64_vms_tdata (abfd)->fixups_off; |
| 2863 | elf_ia64_vms_tdata (abfd)->fixups_off = fixups_off; |
| 2864 | |
| 2865 | if (!_bfd_elf_add_dynamic_entry |
| 2866 | (info, DT_IA_64_VMS_FIXUP_RELA_CNT, |
| 2867 | fixups_shl_off / sizeof (Elf64_External_VMS_IMAGE_FIXUP))) |
| 2868 | return FALSE; |
| 2869 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_RELA_OFF, |
| 2870 | fixups_off)) |
| 2871 | return FALSE; |
| 2872 | fixups_off += fixups_shl_off; |
| 2873 | } |
| 2874 | |
| 2875 | /* Unwind. */ |
| 2876 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWINDSZ, 0)) |
| 2877 | return FALSE; |
| 2878 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_CODSEG, 0)) |
| 2879 | return FALSE; |
| 2880 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_INFOSEG, 0)) |
| 2881 | return FALSE; |
| 2882 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_OFFSET, 0)) |
| 2883 | return FALSE; |
| 2884 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_SEG, 0)) |
| 2885 | return FALSE; |
| 2886 | |
| 2887 | if (!_bfd_elf_add_dynamic_entry (info, DT_NULL, 0xdead)) |
| 2888 | return FALSE; |
| 2889 | |
| 2890 | /* Fix the strtab entries. */ |
| 2891 | bed = get_elf_backend_data (hash_table->dynobj); |
| 2892 | |
| 2893 | if (dynstrsec->size > 1) |
| 2894 | dynstrsec->contents[0] = 0; |
| 2895 | else |
| 2896 | dynstrsec->size = 0; |
| 2897 | |
| 2898 | /* Note: one 'spare' (ie DT_NULL) entry is added by |
| 2899 | bfd_elf_size_dynsym_hash_dynstr. */ |
| 2900 | dyn.d_tag = DT_IA_64_VMS_STRTAB_OFFSET; |
| 2901 | dyn.d_un.d_val = dynsec->size /* + sizeof (Elf64_External_Dyn) */; |
| 2902 | bed->s->swap_dyn_out (hash_table->dynobj, &dyn, |
| 2903 | dynsec->contents + strdyn_off); |
| 2904 | |
| 2905 | dyn.d_tag = DT_STRSZ; |
| 2906 | dyn.d_un.d_val = dynstrsec->size; |
| 2907 | bed->s->swap_dyn_out (hash_table->dynobj, &dyn, |
| 2908 | dynsec->contents + strdyn_off + bed->s->sizeof_dyn); |
| 2909 | |
| 2910 | elf_ia64_vms_tdata (output_bfd)->needed_count = shl_num; |
| 2911 | |
| 2912 | /* Note section. */ |
| 2913 | if (!create_ia64_vms_notes (output_bfd, info, time_hi, time_lo)) |
| 2914 | return FALSE; |
| 2915 | } |
| 2916 | |
| 2917 | /* ??? Perhaps force __gp local. */ |
| 2918 | |
| 2919 | return TRUE; |
| 2920 | } |
| 2921 | |
| 2922 | static void |
| 2923 | elf64_ia64_install_fixup (bfd *output_bfd, |
| 2924 | struct elf64_ia64_link_hash_table *ia64_info, |
| 2925 | struct elf_link_hash_entry *h, |
| 2926 | unsigned int type, asection *sec, bfd_vma offset, |
| 2927 | bfd_vma addend) |
| 2928 | { |
| 2929 | asection *relsec; |
| 2930 | Elf64_External_VMS_IMAGE_FIXUP *fixup; |
| 2931 | struct elf64_ia64_link_hash_entry *h_ia64; |
| 2932 | bfd_vma fixoff; |
| 2933 | Elf_Internal_Phdr *phdr; |
| 2934 | |
| 2935 | if (h == NULL || !h->def_dynamic) |
| 2936 | abort (); |
| 2937 | |
| 2938 | h_ia64 = (struct elf64_ia64_link_hash_entry *) h; |
| 2939 | fixoff = elf_ia64_vms_tdata (h_ia64->shl)->fixups_off; |
| 2940 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += |
| 2941 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2942 | relsec = ia64_info->fixups_sec; |
| 2943 | |
| 2944 | fixup = (Elf64_External_VMS_IMAGE_FIXUP *)(relsec->contents + fixoff); |
| 2945 | offset += sec->output_section->vma + sec->output_offset; |
| 2946 | |
| 2947 | /* FIXME: this is slow. We should cache the last one used, or create a |
| 2948 | map. */ |
| 2949 | phdr = _bfd_elf_find_segment_containing_section |
| 2950 | (output_bfd, sec->output_section); |
| 2951 | BFD_ASSERT (phdr != NULL); |
| 2952 | |
| 2953 | bfd_putl64 (offset - phdr->p_vaddr, fixup->fixup_offset); |
| 2954 | bfd_putl32 (type, fixup->type); |
| 2955 | bfd_putl32 (phdr - elf_tdata (output_bfd)->phdr, fixup->fixup_seg); |
| 2956 | bfd_putl64 (addend, fixup->addend); |
| 2957 | bfd_putl32 (h->root.u.def.value, fixup->symvec_index); |
| 2958 | bfd_putl32 (2, fixup->data_type); |
| 2959 | } |
| 2960 | |
| 2961 | /* Store an entry for target address TARGET_ADDR in the linkage table |
| 2962 | and return the gp-relative address of the linkage table entry. */ |
| 2963 | |
| 2964 | static bfd_vma |
| 2965 | set_got_entry (bfd *abfd, struct bfd_link_info *info, |
| 2966 | struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2967 | bfd_vma addend, bfd_vma value, unsigned int dyn_r_type) |
| 2968 | { |
| 2969 | struct elf64_ia64_link_hash_table *ia64_info; |
| 2970 | asection *got_sec; |
| 2971 | bfd_boolean done; |
| 2972 | bfd_vma got_offset; |
| 2973 | |
| 2974 | ia64_info = elf64_ia64_hash_table (info); |
| 2975 | if (ia64_info == NULL) |
| 2976 | return 0; |
| 2977 | |
| 2978 | got_sec = ia64_info->root.sgot; |
| 2979 | |
| 2980 | switch (dyn_r_type) |
| 2981 | { |
| 2982 | case R_IA64_TPREL64LSB: |
| 2983 | case R_IA64_DTPMOD64LSB: |
| 2984 | case R_IA64_DTPREL32LSB: |
| 2985 | case R_IA64_DTPREL64LSB: |
| 2986 | abort (); |
| 2987 | break; |
| 2988 | default: |
| 2989 | done = dyn_i->got_done; |
| 2990 | dyn_i->got_done = TRUE; |
| 2991 | got_offset = dyn_i->got_offset; |
| 2992 | break; |
| 2993 | } |
| 2994 | |
| 2995 | BFD_ASSERT ((got_offset & 7) == 0); |
| 2996 | |
| 2997 | if (! done) |
| 2998 | { |
| 2999 | /* Store the target address in the linkage table entry. */ |
| 3000 | bfd_put_64 (abfd, value, got_sec->contents + got_offset); |
| 3001 | |
| 3002 | /* Install a dynamic relocation if needed. */ |
| 3003 | if (((bfd_link_pic (info) |
| 3004 | && (!dyn_i->h |
| 3005 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
| 3006 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
| 3007 | || elf64_ia64_dynamic_symbol_p (dyn_i->h)) |
| 3008 | && (!dyn_i->want_ltoff_fptr |
| 3009 | || !bfd_link_pie (info) |
| 3010 | || !dyn_i->h |
| 3011 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
| 3012 | { |
| 3013 | if (!dyn_i->h || !dyn_i->h->def_dynamic) |
| 3014 | { |
| 3015 | dyn_r_type = R_IA64_REL64LSB; |
| 3016 | addend = value; |
| 3017 | } |
| 3018 | |
| 3019 | /* VMS: install a FIX32 or FIX64. */ |
| 3020 | switch (dyn_r_type) |
| 3021 | { |
| 3022 | case R_IA64_DIR32LSB: |
| 3023 | case R_IA64_FPTR32LSB: |
| 3024 | dyn_r_type = R_IA64_VMS_FIX32; |
| 3025 | break; |
| 3026 | case R_IA64_DIR64LSB: |
| 3027 | case R_IA64_FPTR64LSB: |
| 3028 | dyn_r_type = R_IA64_VMS_FIX64; |
| 3029 | break; |
| 3030 | default: |
| 3031 | BFD_ASSERT (FALSE); |
| 3032 | break; |
| 3033 | } |
| 3034 | elf64_ia64_install_fixup |
| 3035 | (info->output_bfd, ia64_info, dyn_i->h, |
| 3036 | dyn_r_type, got_sec, got_offset, addend); |
| 3037 | } |
| 3038 | } |
| 3039 | |
| 3040 | /* Return the address of the linkage table entry. */ |
| 3041 | value = (got_sec->output_section->vma |
| 3042 | + got_sec->output_offset |
| 3043 | + got_offset); |
| 3044 | |
| 3045 | return value; |
| 3046 | } |
| 3047 | |
| 3048 | /* Fill in a function descriptor consisting of the function's code |
| 3049 | address and its global pointer. Return the descriptor's address. */ |
| 3050 | |
| 3051 | static bfd_vma |
| 3052 | set_fptr_entry (bfd *abfd, struct bfd_link_info *info, |
| 3053 | struct elf64_ia64_dyn_sym_info *dyn_i, |
| 3054 | bfd_vma value) |
| 3055 | { |
| 3056 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3057 | asection *fptr_sec; |
| 3058 | |
| 3059 | ia64_info = elf64_ia64_hash_table (info); |
| 3060 | if (ia64_info == NULL) |
| 3061 | return 0; |
| 3062 | |
| 3063 | fptr_sec = ia64_info->fptr_sec; |
| 3064 | |
| 3065 | if (!dyn_i->fptr_done) |
| 3066 | { |
| 3067 | dyn_i->fptr_done = 1; |
| 3068 | |
| 3069 | /* Fill in the function descriptor. */ |
| 3070 | bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); |
| 3071 | bfd_put_64 (abfd, _bfd_get_gp_value (abfd), |
| 3072 | fptr_sec->contents + dyn_i->fptr_offset + 8); |
| 3073 | } |
| 3074 | |
| 3075 | /* Return the descriptor's address. */ |
| 3076 | value = (fptr_sec->output_section->vma |
| 3077 | + fptr_sec->output_offset |
| 3078 | + dyn_i->fptr_offset); |
| 3079 | |
| 3080 | return value; |
| 3081 | } |
| 3082 | |
| 3083 | /* Fill in a PLTOFF entry consisting of the function's code address |
| 3084 | and its global pointer. Return the descriptor's address. */ |
| 3085 | |
| 3086 | static bfd_vma |
| 3087 | set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, |
| 3088 | struct elf64_ia64_dyn_sym_info *dyn_i, |
| 3089 | bfd_vma value, bfd_boolean is_plt) |
| 3090 | { |
| 3091 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3092 | asection *pltoff_sec; |
| 3093 | |
| 3094 | ia64_info = elf64_ia64_hash_table (info); |
| 3095 | if (ia64_info == NULL) |
| 3096 | return 0; |
| 3097 | |
| 3098 | pltoff_sec = ia64_info->pltoff_sec; |
| 3099 | |
| 3100 | /* Don't do anything if this symbol uses a real PLT entry. In |
| 3101 | that case, we'll fill this in during finish_dynamic_symbol. */ |
| 3102 | if ((! dyn_i->want_plt || is_plt) |
| 3103 | && !dyn_i->pltoff_done) |
| 3104 | { |
| 3105 | bfd_vma gp = _bfd_get_gp_value (abfd); |
| 3106 | |
| 3107 | /* Fill in the function descriptor. */ |
| 3108 | bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); |
| 3109 | bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); |
| 3110 | |
| 3111 | /* Install dynamic relocations if needed. */ |
| 3112 | if (!is_plt |
| 3113 | && bfd_link_pic (info) |
| 3114 | && (!dyn_i->h |
| 3115 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
| 3116 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
| 3117 | { |
| 3118 | /* VMS: */ |
| 3119 | abort (); |
| 3120 | } |
| 3121 | |
| 3122 | dyn_i->pltoff_done = 1; |
| 3123 | } |
| 3124 | |
| 3125 | /* Return the descriptor's address. */ |
| 3126 | value = (pltoff_sec->output_section->vma |
| 3127 | + pltoff_sec->output_offset |
| 3128 | + dyn_i->pltoff_offset); |
| 3129 | |
| 3130 | return value; |
| 3131 | } |
| 3132 | |
| 3133 | /* Called through qsort to sort the .IA_64.unwind section during a |
| 3134 | non-relocatable link. Set elf64_ia64_unwind_entry_compare_bfd |
| 3135 | to the output bfd so we can do proper endianness frobbing. */ |
| 3136 | |
| 3137 | static bfd *elf64_ia64_unwind_entry_compare_bfd; |
| 3138 | |
| 3139 | static int |
| 3140 | elf64_ia64_unwind_entry_compare (const void * a, const void * b) |
| 3141 | { |
| 3142 | bfd_vma av, bv; |
| 3143 | |
| 3144 | av = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, a); |
| 3145 | bv = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, b); |
| 3146 | |
| 3147 | return (av < bv ? -1 : av > bv ? 1 : 0); |
| 3148 | } |
| 3149 | |
| 3150 | /* Make sure we've got ourselves a nice fat __gp value. */ |
| 3151 | static bfd_boolean |
| 3152 | elf64_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) |
| 3153 | { |
| 3154 | bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; |
| 3155 | bfd_vma min_short_vma = min_vma, max_short_vma = 0; |
| 3156 | struct elf_link_hash_entry *gp; |
| 3157 | bfd_vma gp_val; |
| 3158 | asection *os; |
| 3159 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3160 | |
| 3161 | ia64_info = elf64_ia64_hash_table (info); |
| 3162 | if (ia64_info == NULL) |
| 3163 | return FALSE; |
| 3164 | |
| 3165 | /* Find the min and max vma of all sections marked short. Also collect |
| 3166 | min and max vma of any type, for use in selecting a nice gp. */ |
| 3167 | for (os = abfd->sections; os ; os = os->next) |
| 3168 | { |
| 3169 | bfd_vma lo, hi; |
| 3170 | |
| 3171 | if ((os->flags & SEC_ALLOC) == 0) |
| 3172 | continue; |
| 3173 | |
| 3174 | lo = os->vma; |
| 3175 | /* When this function is called from elfNN_ia64_final_link |
| 3176 | the correct value to use is os->size. When called from |
| 3177 | elfNN_ia64_relax_section we are in the middle of section |
| 3178 | sizing; some sections will already have os->size set, others |
| 3179 | will have os->size zero and os->rawsize the previous size. */ |
| 3180 | hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); |
| 3181 | if (hi < lo) |
| 3182 | hi = (bfd_vma) -1; |
| 3183 | |
| 3184 | if (min_vma > lo) |
| 3185 | min_vma = lo; |
| 3186 | if (max_vma < hi) |
| 3187 | max_vma = hi; |
| 3188 | if (os->flags & SEC_SMALL_DATA) |
| 3189 | { |
| 3190 | if (min_short_vma > lo) |
| 3191 | min_short_vma = lo; |
| 3192 | if (max_short_vma < hi) |
| 3193 | max_short_vma = hi; |
| 3194 | } |
| 3195 | } |
| 3196 | |
| 3197 | if (ia64_info->min_short_sec) |
| 3198 | { |
| 3199 | if (min_short_vma |
| 3200 | > (ia64_info->min_short_sec->vma |
| 3201 | + ia64_info->min_short_offset)) |
| 3202 | min_short_vma = (ia64_info->min_short_sec->vma |
| 3203 | + ia64_info->min_short_offset); |
| 3204 | if (max_short_vma |
| 3205 | < (ia64_info->max_short_sec->vma |
| 3206 | + ia64_info->max_short_offset)) |
| 3207 | max_short_vma = (ia64_info->max_short_sec->vma |
| 3208 | + ia64_info->max_short_offset); |
| 3209 | } |
| 3210 | |
| 3211 | /* See if the user wants to force a value. */ |
| 3212 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, |
| 3213 | FALSE, FALSE); |
| 3214 | |
| 3215 | if (gp |
| 3216 | && (gp->root.type == bfd_link_hash_defined |
| 3217 | || gp->root.type == bfd_link_hash_defweak)) |
| 3218 | { |
| 3219 | asection *gp_sec = gp->root.u.def.section; |
| 3220 | gp_val = (gp->root.u.def.value |
| 3221 | + gp_sec->output_section->vma |
| 3222 | + gp_sec->output_offset); |
| 3223 | } |
| 3224 | else |
| 3225 | { |
| 3226 | /* Pick a sensible value. */ |
| 3227 | |
| 3228 | if (ia64_info->min_short_sec) |
| 3229 | { |
| 3230 | bfd_vma short_range = max_short_vma - min_short_vma; |
| 3231 | |
| 3232 | /* If min_short_sec is set, pick one in the middle bewteen |
| 3233 | min_short_vma and max_short_vma. */ |
| 3234 | if (short_range >= 0x400000) |
| 3235 | goto overflow; |
| 3236 | gp_val = min_short_vma + short_range / 2; |
| 3237 | } |
| 3238 | else |
| 3239 | { |
| 3240 | asection *got_sec = ia64_info->root.sgot; |
| 3241 | |
| 3242 | /* Start with just the address of the .got. */ |
| 3243 | if (got_sec) |
| 3244 | gp_val = got_sec->output_section->vma; |
| 3245 | else if (max_short_vma != 0) |
| 3246 | gp_val = min_short_vma; |
| 3247 | else if (max_vma - min_vma < 0x200000) |
| 3248 | gp_val = min_vma; |
| 3249 | else |
| 3250 | gp_val = max_vma - 0x200000 + 8; |
| 3251 | } |
| 3252 | |
| 3253 | /* If it is possible to address the entire image, but we |
| 3254 | don't with the choice above, adjust. */ |
| 3255 | if (max_vma - min_vma < 0x400000 |
| 3256 | && (max_vma - gp_val >= 0x200000 |
| 3257 | || gp_val - min_vma > 0x200000)) |
| 3258 | gp_val = min_vma + 0x200000; |
| 3259 | else if (max_short_vma != 0) |
| 3260 | { |
| 3261 | /* If we don't cover all the short data, adjust. */ |
| 3262 | if (max_short_vma - gp_val >= 0x200000) |
| 3263 | gp_val = min_short_vma + 0x200000; |
| 3264 | |
| 3265 | /* If we're addressing stuff past the end, adjust back. */ |
| 3266 | if (gp_val > max_vma) |
| 3267 | gp_val = max_vma - 0x200000 + 8; |
| 3268 | } |
| 3269 | } |
| 3270 | |
| 3271 | /* Validate whether all SHF_IA_64_SHORT sections are within |
| 3272 | range of the chosen GP. */ |
| 3273 | |
| 3274 | if (max_short_vma != 0) |
| 3275 | { |
| 3276 | if (max_short_vma - min_short_vma >= 0x400000) |
| 3277 | { |
| 3278 | overflow: |
| 3279 | _bfd_error_handler |
| 3280 | /* xgettext:c-format */ |
| 3281 | (_("%pB: short data segment overflowed (%#" PRIx64 " >= 0x400000)"), |
| 3282 | abfd, (uint64_t) (max_short_vma - min_short_vma)); |
| 3283 | return FALSE; |
| 3284 | } |
| 3285 | else if ((gp_val > min_short_vma |
| 3286 | && gp_val - min_short_vma > 0x200000) |
| 3287 | || (gp_val < max_short_vma |
| 3288 | && max_short_vma - gp_val >= 0x200000)) |
| 3289 | { |
| 3290 | _bfd_error_handler |
| 3291 | (_("%pB: __gp does not cover short data segment"), abfd); |
| 3292 | return FALSE; |
| 3293 | } |
| 3294 | } |
| 3295 | |
| 3296 | _bfd_set_gp_value (abfd, gp_val); |
| 3297 | |
| 3298 | return TRUE; |
| 3299 | } |
| 3300 | |
| 3301 | static bfd_boolean |
| 3302 | elf64_ia64_final_link (bfd *abfd, struct bfd_link_info *info) |
| 3303 | { |
| 3304 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3305 | asection *unwind_output_sec; |
| 3306 | |
| 3307 | ia64_info = elf64_ia64_hash_table (info); |
| 3308 | if (ia64_info == NULL) |
| 3309 | return FALSE; |
| 3310 | |
| 3311 | /* Make sure we've got ourselves a nice fat __gp value. */ |
| 3312 | if (!bfd_link_relocatable (info)) |
| 3313 | { |
| 3314 | bfd_vma gp_val; |
| 3315 | struct elf_link_hash_entry *gp; |
| 3316 | |
| 3317 | /* We assume after gp is set, section size will only decrease. We |
| 3318 | need to adjust gp for it. */ |
| 3319 | _bfd_set_gp_value (abfd, 0); |
| 3320 | if (! elf64_ia64_choose_gp (abfd, info, TRUE)) |
| 3321 | return FALSE; |
| 3322 | gp_val = _bfd_get_gp_value (abfd); |
| 3323 | |
| 3324 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, |
| 3325 | FALSE, FALSE); |
| 3326 | if (gp) |
| 3327 | { |
| 3328 | gp->root.type = bfd_link_hash_defined; |
| 3329 | gp->root.u.def.value = gp_val; |
| 3330 | gp->root.u.def.section = bfd_abs_section_ptr; |
| 3331 | } |
| 3332 | } |
| 3333 | |
| 3334 | /* If we're producing a final executable, we need to sort the contents |
| 3335 | of the .IA_64.unwind section. Force this section to be relocated |
| 3336 | into memory rather than written immediately to the output file. */ |
| 3337 | unwind_output_sec = NULL; |
| 3338 | if (!bfd_link_relocatable (info)) |
| 3339 | { |
| 3340 | asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); |
| 3341 | if (s) |
| 3342 | { |
| 3343 | unwind_output_sec = s->output_section; |
| 3344 | unwind_output_sec->contents |
| 3345 | = bfd_malloc (unwind_output_sec->size); |
| 3346 | if (unwind_output_sec->contents == NULL) |
| 3347 | return FALSE; |
| 3348 | } |
| 3349 | } |
| 3350 | |
| 3351 | /* Invoke the regular ELF backend linker to do all the work. */ |
| 3352 | if (!bfd_elf_final_link (abfd, info)) |
| 3353 | return FALSE; |
| 3354 | |
| 3355 | if (unwind_output_sec) |
| 3356 | { |
| 3357 | elf64_ia64_unwind_entry_compare_bfd = abfd; |
| 3358 | qsort (unwind_output_sec->contents, |
| 3359 | (size_t) (unwind_output_sec->size / 24), |
| 3360 | 24, |
| 3361 | elf64_ia64_unwind_entry_compare); |
| 3362 | |
| 3363 | if (! bfd_set_section_contents (abfd, unwind_output_sec, |
| 3364 | unwind_output_sec->contents, (bfd_vma) 0, |
| 3365 | unwind_output_sec->size)) |
| 3366 | return FALSE; |
| 3367 | } |
| 3368 | |
| 3369 | return TRUE; |
| 3370 | } |
| 3371 | |
| 3372 | static bfd_boolean |
| 3373 | elf64_ia64_relocate_section (bfd *output_bfd, |
| 3374 | struct bfd_link_info *info, |
| 3375 | bfd *input_bfd, |
| 3376 | asection *input_section, |
| 3377 | bfd_byte *contents, |
| 3378 | Elf_Internal_Rela *relocs, |
| 3379 | Elf_Internal_Sym *local_syms, |
| 3380 | asection **local_sections) |
| 3381 | { |
| 3382 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3383 | Elf_Internal_Shdr *symtab_hdr; |
| 3384 | Elf_Internal_Rela *rel; |
| 3385 | Elf_Internal_Rela *relend; |
| 3386 | bfd_boolean ret_val = TRUE; /* for non-fatal errors */ |
| 3387 | bfd_vma gp_val; |
| 3388 | |
| 3389 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3390 | ia64_info = elf64_ia64_hash_table (info); |
| 3391 | if (ia64_info == NULL) |
| 3392 | return FALSE; |
| 3393 | |
| 3394 | /* Infect various flags from the input section to the output section. */ |
| 3395 | if (bfd_link_relocatable (info)) |
| 3396 | { |
| 3397 | bfd_vma flags; |
| 3398 | |
| 3399 | flags = elf_section_data(input_section)->this_hdr.sh_flags; |
| 3400 | flags &= SHF_IA_64_NORECOV; |
| 3401 | |
| 3402 | elf_section_data(input_section->output_section) |
| 3403 | ->this_hdr.sh_flags |= flags; |
| 3404 | } |
| 3405 | |
| 3406 | gp_val = _bfd_get_gp_value (output_bfd); |
| 3407 | |
| 3408 | rel = relocs; |
| 3409 | relend = relocs + input_section->reloc_count; |
| 3410 | for (; rel < relend; ++rel) |
| 3411 | { |
| 3412 | struct elf_link_hash_entry *h; |
| 3413 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 3414 | bfd_reloc_status_type r; |
| 3415 | reloc_howto_type *howto; |
| 3416 | unsigned long r_symndx; |
| 3417 | Elf_Internal_Sym *sym; |
| 3418 | unsigned int r_type; |
| 3419 | bfd_vma value; |
| 3420 | asection *sym_sec; |
| 3421 | bfd_byte *hit_addr; |
| 3422 | bfd_boolean dynamic_symbol_p; |
| 3423 | bfd_boolean undef_weak_ref; |
| 3424 | |
| 3425 | r_type = ELF64_R_TYPE (rel->r_info); |
| 3426 | if (r_type > R_IA64_MAX_RELOC_CODE) |
| 3427 | { |
| 3428 | /* xgettext:c-format */ |
| 3429 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
| 3430 | input_bfd, (int) r_type); |
| 3431 | bfd_set_error (bfd_error_bad_value); |
| 3432 | ret_val = FALSE; |
| 3433 | continue; |
| 3434 | } |
| 3435 | |
| 3436 | howto = ia64_elf_lookup_howto (r_type); |
| 3437 | if (howto == NULL) |
| 3438 | { |
| 3439 | ret_val = FALSE; |
| 3440 | continue; |
| 3441 | } |
| 3442 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 3443 | h = NULL; |
| 3444 | sym = NULL; |
| 3445 | sym_sec = NULL; |
| 3446 | undef_weak_ref = FALSE; |
| 3447 | |
| 3448 | if (r_symndx < symtab_hdr->sh_info) |
| 3449 | { |
| 3450 | /* Reloc against local symbol. */ |
| 3451 | asection *msec; |
| 3452 | sym = local_syms + r_symndx; |
| 3453 | sym_sec = local_sections[r_symndx]; |
| 3454 | msec = sym_sec; |
| 3455 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); |
| 3456 | if (!bfd_link_relocatable (info) |
| 3457 | && (sym_sec->flags & SEC_MERGE) != 0 |
| 3458 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
| 3459 | && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
| 3460 | { |
| 3461 | struct elf64_ia64_local_hash_entry *loc_h; |
| 3462 | |
| 3463 | loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); |
| 3464 | if (loc_h && ! loc_h->sec_merge_done) |
| 3465 | { |
| 3466 | struct elf64_ia64_dyn_sym_info *dynent; |
| 3467 | unsigned int count; |
| 3468 | |
| 3469 | for (count = loc_h->count, dynent = loc_h->info; |
| 3470 | count != 0; |
| 3471 | count--, dynent++) |
| 3472 | { |
| 3473 | msec = sym_sec; |
| 3474 | dynent->addend = |
| 3475 | _bfd_merged_section_offset (output_bfd, &msec, |
| 3476 | elf_section_data (msec)-> |
| 3477 | sec_info, |
| 3478 | sym->st_value |
| 3479 | + dynent->addend); |
| 3480 | dynent->addend -= sym->st_value; |
| 3481 | dynent->addend += msec->output_section->vma |
| 3482 | + msec->output_offset |
| 3483 | - sym_sec->output_section->vma |
| 3484 | - sym_sec->output_offset; |
| 3485 | } |
| 3486 | |
| 3487 | /* We may have introduced duplicated entries. We need |
| 3488 | to remove them properly. */ |
| 3489 | count = sort_dyn_sym_info (loc_h->info, loc_h->count); |
| 3490 | if (count != loc_h->count) |
| 3491 | { |
| 3492 | loc_h->count = count; |
| 3493 | loc_h->sorted_count = count; |
| 3494 | } |
| 3495 | |
| 3496 | loc_h->sec_merge_done = 1; |
| 3497 | } |
| 3498 | } |
| 3499 | } |
| 3500 | else |
| 3501 | { |
| 3502 | bfd_boolean unresolved_reloc; |
| 3503 | bfd_boolean warned, ignored; |
| 3504 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
| 3505 | |
| 3506 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 3507 | r_symndx, symtab_hdr, sym_hashes, |
| 3508 | h, sym_sec, value, |
| 3509 | unresolved_reloc, warned, ignored); |
| 3510 | |
| 3511 | if (h->root.type == bfd_link_hash_undefweak) |
| 3512 | undef_weak_ref = TRUE; |
| 3513 | else if (warned) |
| 3514 | continue; |
| 3515 | } |
| 3516 | |
| 3517 | /* For relocs against symbols from removed linkonce sections, |
| 3518 | or sections discarded by a linker script, we just want the |
| 3519 | section contents zeroed. Avoid any special processing. */ |
| 3520 | if (sym_sec != NULL && discarded_section (sym_sec)) |
| 3521 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 3522 | rel, 1, relend, howto, 0, contents); |
| 3523 | |
| 3524 | if (bfd_link_relocatable (info)) |
| 3525 | continue; |
| 3526 | |
| 3527 | hit_addr = contents + rel->r_offset; |
| 3528 | value += rel->r_addend; |
| 3529 | dynamic_symbol_p = elf64_ia64_dynamic_symbol_p (h); |
| 3530 | |
| 3531 | switch (r_type) |
| 3532 | { |
| 3533 | case R_IA64_NONE: |
| 3534 | case R_IA64_LDXMOV: |
| 3535 | continue; |
| 3536 | |
| 3537 | case R_IA64_IMM14: |
| 3538 | case R_IA64_IMM22: |
| 3539 | case R_IA64_IMM64: |
| 3540 | case R_IA64_DIR32MSB: |
| 3541 | case R_IA64_DIR32LSB: |
| 3542 | case R_IA64_DIR64MSB: |
| 3543 | case R_IA64_DIR64LSB: |
| 3544 | /* Install a dynamic relocation for this reloc. */ |
| 3545 | if ((dynamic_symbol_p || bfd_link_pic (info)) |
| 3546 | && r_symndx != 0 |
| 3547 | && (input_section->flags & SEC_ALLOC) != 0) |
| 3548 | { |
| 3549 | unsigned int dyn_r_type; |
| 3550 | bfd_vma addend; |
| 3551 | |
| 3552 | switch (r_type) |
| 3553 | { |
| 3554 | case R_IA64_IMM14: |
| 3555 | case R_IA64_IMM22: |
| 3556 | case R_IA64_IMM64: |
| 3557 | /* ??? People shouldn't be doing non-pic code in |
| 3558 | shared libraries nor dynamic executables. */ |
| 3559 | _bfd_error_handler |
| 3560 | /* xgettext:c-format */ |
| 3561 | (_("%pB: non-pic code with imm relocation against" |
| 3562 | " dynamic symbol `%s'"), |
| 3563 | input_bfd, |
| 3564 | h ? h->root.root.string |
| 3565 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 3566 | sym_sec)); |
| 3567 | ret_val = FALSE; |
| 3568 | continue; |
| 3569 | |
| 3570 | default: |
| 3571 | break; |
| 3572 | } |
| 3573 | |
| 3574 | /* If we don't need dynamic symbol lookup, find a |
| 3575 | matching RELATIVE relocation. */ |
| 3576 | dyn_r_type = r_type; |
| 3577 | if (dynamic_symbol_p) |
| 3578 | { |
| 3579 | addend = rel->r_addend; |
| 3580 | value = 0; |
| 3581 | } |
| 3582 | else |
| 3583 | { |
| 3584 | addend = value; |
| 3585 | } |
| 3586 | |
| 3587 | /* VMS: install a FIX64. */ |
| 3588 | switch (dyn_r_type) |
| 3589 | { |
| 3590 | case R_IA64_DIR32LSB: |
| 3591 | dyn_r_type = R_IA64_VMS_FIX32; |
| 3592 | break; |
| 3593 | case R_IA64_DIR64LSB: |
| 3594 | dyn_r_type = R_IA64_VMS_FIX64; |
| 3595 | break; |
| 3596 | default: |
| 3597 | BFD_ASSERT (FALSE); |
| 3598 | break; |
| 3599 | } |
| 3600 | elf64_ia64_install_fixup |
| 3601 | (output_bfd, ia64_info, h, |
| 3602 | dyn_r_type, input_section, rel->r_offset, addend); |
| 3603 | r = bfd_reloc_ok; |
| 3604 | break; |
| 3605 | } |
| 3606 | /* Fall through. */ |
| 3607 | |
| 3608 | case R_IA64_LTV32MSB: |
| 3609 | case R_IA64_LTV32LSB: |
| 3610 | case R_IA64_LTV64MSB: |
| 3611 | case R_IA64_LTV64LSB: |
| 3612 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3613 | break; |
| 3614 | |
| 3615 | case R_IA64_GPREL22: |
| 3616 | case R_IA64_GPREL64I: |
| 3617 | case R_IA64_GPREL32MSB: |
| 3618 | case R_IA64_GPREL32LSB: |
| 3619 | case R_IA64_GPREL64MSB: |
| 3620 | case R_IA64_GPREL64LSB: |
| 3621 | if (dynamic_symbol_p) |
| 3622 | { |
| 3623 | _bfd_error_handler |
| 3624 | /* xgettext:c-format */ |
| 3625 | (_("%pB: @gprel relocation against dynamic symbol %s"), |
| 3626 | input_bfd, |
| 3627 | h ? h->root.root.string |
| 3628 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 3629 | sym_sec)); |
| 3630 | ret_val = FALSE; |
| 3631 | continue; |
| 3632 | } |
| 3633 | value -= gp_val; |
| 3634 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3635 | break; |
| 3636 | |
| 3637 | case R_IA64_LTOFF22: |
| 3638 | case R_IA64_LTOFF22X: |
| 3639 | case R_IA64_LTOFF64I: |
| 3640 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 3641 | value = set_got_entry (input_bfd, info, dyn_i, |
| 3642 | rel->r_addend, value, R_IA64_DIR64LSB); |
| 3643 | value -= gp_val; |
| 3644 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3645 | break; |
| 3646 | |
| 3647 | case R_IA64_PLTOFF22: |
| 3648 | case R_IA64_PLTOFF64I: |
| 3649 | case R_IA64_PLTOFF64MSB: |
| 3650 | case R_IA64_PLTOFF64LSB: |
| 3651 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 3652 | value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); |
| 3653 | value -= gp_val; |
| 3654 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3655 | break; |
| 3656 | |
| 3657 | case R_IA64_FPTR64I: |
| 3658 | case R_IA64_FPTR32MSB: |
| 3659 | case R_IA64_FPTR32LSB: |
| 3660 | case R_IA64_FPTR64MSB: |
| 3661 | case R_IA64_FPTR64LSB: |
| 3662 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 3663 | if (dyn_i->want_fptr) |
| 3664 | { |
| 3665 | if (!undef_weak_ref) |
| 3666 | value = set_fptr_entry (output_bfd, info, dyn_i, value); |
| 3667 | } |
| 3668 | if (!dyn_i->want_fptr || bfd_link_pie (info)) |
| 3669 | { |
| 3670 | /* Otherwise, we expect the dynamic linker to create |
| 3671 | the entry. */ |
| 3672 | |
| 3673 | if (dyn_i->want_fptr) |
| 3674 | { |
| 3675 | if (r_type == R_IA64_FPTR64I) |
| 3676 | { |
| 3677 | /* We can't represent this without a dynamic symbol. |
| 3678 | Adjust the relocation to be against an output |
| 3679 | section symbol, which are always present in the |
| 3680 | dynamic symbol table. */ |
| 3681 | /* ??? People shouldn't be doing non-pic code in |
| 3682 | shared libraries. Hork. */ |
| 3683 | _bfd_error_handler |
| 3684 | (_("%pB: linking non-pic code in a position independent executable"), |
| 3685 | input_bfd); |
| 3686 | ret_val = FALSE; |
| 3687 | continue; |
| 3688 | } |
| 3689 | } |
| 3690 | else |
| 3691 | { |
| 3692 | value = 0; |
| 3693 | } |
| 3694 | |
| 3695 | /* VMS: FIXFD. */ |
| 3696 | elf64_ia64_install_fixup |
| 3697 | (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, |
| 3698 | input_section, rel->r_offset, 0); |
| 3699 | r = bfd_reloc_ok; |
| 3700 | break; |
| 3701 | } |
| 3702 | |
| 3703 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3704 | break; |
| 3705 | |
| 3706 | case R_IA64_LTOFF_FPTR22: |
| 3707 | case R_IA64_LTOFF_FPTR64I: |
| 3708 | case R_IA64_LTOFF_FPTR32MSB: |
| 3709 | case R_IA64_LTOFF_FPTR32LSB: |
| 3710 | case R_IA64_LTOFF_FPTR64MSB: |
| 3711 | case R_IA64_LTOFF_FPTR64LSB: |
| 3712 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 3713 | if (dyn_i->want_fptr) |
| 3714 | { |
| 3715 | BFD_ASSERT (h == NULL || !h->def_dynamic); |
| 3716 | if (!undef_weak_ref) |
| 3717 | value = set_fptr_entry (output_bfd, info, dyn_i, value); |
| 3718 | } |
| 3719 | else |
| 3720 | value = 0; |
| 3721 | |
| 3722 | value = set_got_entry (output_bfd, info, dyn_i, |
| 3723 | rel->r_addend, value, R_IA64_FPTR64LSB); |
| 3724 | value -= gp_val; |
| 3725 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3726 | break; |
| 3727 | |
| 3728 | case R_IA64_PCREL32MSB: |
| 3729 | case R_IA64_PCREL32LSB: |
| 3730 | case R_IA64_PCREL64MSB: |
| 3731 | case R_IA64_PCREL64LSB: |
| 3732 | /* Install a dynamic relocation for this reloc. */ |
| 3733 | if (dynamic_symbol_p && r_symndx != 0) |
| 3734 | { |
| 3735 | /* VMS: doesn't exist ??? */ |
| 3736 | abort (); |
| 3737 | } |
| 3738 | goto finish_pcrel; |
| 3739 | |
| 3740 | case R_IA64_PCREL21B: |
| 3741 | case R_IA64_PCREL60B: |
| 3742 | /* We should have created a PLT entry for any dynamic symbol. */ |
| 3743 | dyn_i = NULL; |
| 3744 | if (h) |
| 3745 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); |
| 3746 | |
| 3747 | if (dyn_i && dyn_i->want_plt2) |
| 3748 | { |
| 3749 | /* Should have caught this earlier. */ |
| 3750 | BFD_ASSERT (rel->r_addend == 0); |
| 3751 | |
| 3752 | value = (ia64_info->root.splt->output_section->vma |
| 3753 | + ia64_info->root.splt->output_offset |
| 3754 | + dyn_i->plt2_offset); |
| 3755 | } |
| 3756 | else |
| 3757 | { |
| 3758 | /* Since there's no PLT entry, Validate that this is |
| 3759 | locally defined. */ |
| 3760 | BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); |
| 3761 | |
| 3762 | /* If the symbol is undef_weak, we shouldn't be trying |
| 3763 | to call it. There's every chance that we'd wind up |
| 3764 | with an out-of-range fixup here. Don't bother setting |
| 3765 | any value at all. */ |
| 3766 | if (undef_weak_ref) |
| 3767 | continue; |
| 3768 | } |
| 3769 | goto finish_pcrel; |
| 3770 | |
| 3771 | case R_IA64_PCREL21BI: |
| 3772 | case R_IA64_PCREL21F: |
| 3773 | case R_IA64_PCREL21M: |
| 3774 | case R_IA64_PCREL22: |
| 3775 | case R_IA64_PCREL64I: |
| 3776 | /* The PCREL21BI reloc is specifically not intended for use with |
| 3777 | dynamic relocs. PCREL21F and PCREL21M are used for speculation |
| 3778 | fixup code, and thus probably ought not be dynamic. The |
| 3779 | PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ |
| 3780 | if (dynamic_symbol_p) |
| 3781 | { |
| 3782 | const char *msg; |
| 3783 | |
| 3784 | if (r_type == R_IA64_PCREL21BI) |
| 3785 | /* xgettext:c-format */ |
| 3786 | msg = _("%pB: @internal branch to dynamic symbol %s"); |
| 3787 | else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) |
| 3788 | /* xgettext:c-format */ |
| 3789 | msg = _("%pB: speculation fixup to dynamic symbol %s"); |
| 3790 | else |
| 3791 | /* xgettext:c-format */ |
| 3792 | msg = _("%pB: @pcrel relocation against dynamic symbol %s"); |
| 3793 | _bfd_error_handler (msg, input_bfd, |
| 3794 | h ? h->root.root.string |
| 3795 | : bfd_elf_sym_name (input_bfd, |
| 3796 | symtab_hdr, |
| 3797 | sym, |
| 3798 | sym_sec)); |
| 3799 | ret_val = FALSE; |
| 3800 | continue; |
| 3801 | } |
| 3802 | goto finish_pcrel; |
| 3803 | |
| 3804 | finish_pcrel: |
| 3805 | /* Make pc-relative. */ |
| 3806 | value -= (input_section->output_section->vma |
| 3807 | + input_section->output_offset |
| 3808 | + rel->r_offset) & ~ (bfd_vma) 0x3; |
| 3809 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3810 | break; |
| 3811 | |
| 3812 | case R_IA64_SEGREL32MSB: |
| 3813 | case R_IA64_SEGREL32LSB: |
| 3814 | case R_IA64_SEGREL64MSB: |
| 3815 | case R_IA64_SEGREL64LSB: |
| 3816 | { |
| 3817 | /* Find the segment that contains the output_section. */ |
| 3818 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section |
| 3819 | (output_bfd, sym_sec->output_section); |
| 3820 | |
| 3821 | if (p == NULL) |
| 3822 | { |
| 3823 | r = bfd_reloc_notsupported; |
| 3824 | } |
| 3825 | else |
| 3826 | { |
| 3827 | /* The VMA of the segment is the vaddr of the associated |
| 3828 | program header. */ |
| 3829 | if (value > p->p_vaddr) |
| 3830 | value -= p->p_vaddr; |
| 3831 | else |
| 3832 | value = 0; |
| 3833 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3834 | } |
| 3835 | break; |
| 3836 | } |
| 3837 | |
| 3838 | case R_IA64_SECREL32MSB: |
| 3839 | case R_IA64_SECREL32LSB: |
| 3840 | case R_IA64_SECREL64MSB: |
| 3841 | case R_IA64_SECREL64LSB: |
| 3842 | /* Make output-section relative to section where the symbol |
| 3843 | is defined. PR 475 */ |
| 3844 | if (sym_sec) |
| 3845 | value -= sym_sec->output_section->vma; |
| 3846 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3847 | break; |
| 3848 | |
| 3849 | case R_IA64_IPLTMSB: |
| 3850 | case R_IA64_IPLTLSB: |
| 3851 | /* Install a dynamic relocation for this reloc. */ |
| 3852 | if ((dynamic_symbol_p || bfd_link_pic (info)) |
| 3853 | && (input_section->flags & SEC_ALLOC) != 0) |
| 3854 | { |
| 3855 | /* VMS: FIXFD ?? */ |
| 3856 | abort (); |
| 3857 | } |
| 3858 | |
| 3859 | if (r_type == R_IA64_IPLTMSB) |
| 3860 | r_type = R_IA64_DIR64MSB; |
| 3861 | else |
| 3862 | r_type = R_IA64_DIR64LSB; |
| 3863 | ia64_elf_install_value (hit_addr, value, r_type); |
| 3864 | r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); |
| 3865 | break; |
| 3866 | |
| 3867 | case R_IA64_TPREL14: |
| 3868 | case R_IA64_TPREL22: |
| 3869 | case R_IA64_TPREL64I: |
| 3870 | r = bfd_reloc_notsupported; |
| 3871 | break; |
| 3872 | |
| 3873 | case R_IA64_DTPREL14: |
| 3874 | case R_IA64_DTPREL22: |
| 3875 | case R_IA64_DTPREL64I: |
| 3876 | case R_IA64_DTPREL32LSB: |
| 3877 | case R_IA64_DTPREL32MSB: |
| 3878 | case R_IA64_DTPREL64LSB: |
| 3879 | case R_IA64_DTPREL64MSB: |
| 3880 | r = bfd_reloc_notsupported; |
| 3881 | break; |
| 3882 | |
| 3883 | case R_IA64_LTOFF_TPREL22: |
| 3884 | case R_IA64_LTOFF_DTPMOD22: |
| 3885 | case R_IA64_LTOFF_DTPREL22: |
| 3886 | r = bfd_reloc_notsupported; |
| 3887 | break; |
| 3888 | |
| 3889 | default: |
| 3890 | r = bfd_reloc_notsupported; |
| 3891 | break; |
| 3892 | } |
| 3893 | |
| 3894 | switch (r) |
| 3895 | { |
| 3896 | case bfd_reloc_ok: |
| 3897 | break; |
| 3898 | |
| 3899 | case bfd_reloc_undefined: |
| 3900 | /* This can happen for global table relative relocs if |
| 3901 | __gp is undefined. This is a panic situation so we |
| 3902 | don't try to continue. */ |
| 3903 | (*info->callbacks->undefined_symbol) |
| 3904 | (info, "__gp", input_bfd, input_section, rel->r_offset, 1); |
| 3905 | return FALSE; |
| 3906 | |
| 3907 | case bfd_reloc_notsupported: |
| 3908 | { |
| 3909 | const char *name; |
| 3910 | |
| 3911 | if (h) |
| 3912 | name = h->root.root.string; |
| 3913 | else |
| 3914 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 3915 | sym_sec); |
| 3916 | (*info->callbacks->warning) (info, _("unsupported reloc"), |
| 3917 | name, input_bfd, |
| 3918 | input_section, rel->r_offset); |
| 3919 | ret_val = FALSE; |
| 3920 | } |
| 3921 | break; |
| 3922 | |
| 3923 | case bfd_reloc_dangerous: |
| 3924 | case bfd_reloc_outofrange: |
| 3925 | case bfd_reloc_overflow: |
| 3926 | default: |
| 3927 | { |
| 3928 | const char *name; |
| 3929 | |
| 3930 | if (h) |
| 3931 | name = h->root.root.string; |
| 3932 | else |
| 3933 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 3934 | sym_sec); |
| 3935 | |
| 3936 | switch (r_type) |
| 3937 | { |
| 3938 | case R_IA64_TPREL14: |
| 3939 | case R_IA64_TPREL22: |
| 3940 | case R_IA64_TPREL64I: |
| 3941 | case R_IA64_DTPREL14: |
| 3942 | case R_IA64_DTPREL22: |
| 3943 | case R_IA64_DTPREL64I: |
| 3944 | case R_IA64_DTPREL32LSB: |
| 3945 | case R_IA64_DTPREL32MSB: |
| 3946 | case R_IA64_DTPREL64LSB: |
| 3947 | case R_IA64_DTPREL64MSB: |
| 3948 | case R_IA64_LTOFF_TPREL22: |
| 3949 | case R_IA64_LTOFF_DTPMOD22: |
| 3950 | case R_IA64_LTOFF_DTPREL22: |
| 3951 | _bfd_error_handler |
| 3952 | /* xgettext:c-format */ |
| 3953 | (_("%pB: missing TLS section for relocation %s against `%s'" |
| 3954 | " at %#" PRIx64 " in section `%pA'."), |
| 3955 | input_bfd, howto->name, name, |
| 3956 | (uint64_t) rel->r_offset, input_section); |
| 3957 | break; |
| 3958 | |
| 3959 | case R_IA64_PCREL21B: |
| 3960 | case R_IA64_PCREL21BI: |
| 3961 | case R_IA64_PCREL21M: |
| 3962 | case R_IA64_PCREL21F: |
| 3963 | if (is_elf_hash_table (info->hash)) |
| 3964 | { |
| 3965 | /* Relaxtion is always performed for ELF output. |
| 3966 | Overflow failures for those relocations mean |
| 3967 | that the section is too big to relax. */ |
| 3968 | _bfd_error_handler |
| 3969 | /* xgettext:c-format */ |
| 3970 | (_("%pB: Can't relax br (%s) to `%s' " |
| 3971 | "at %#" PRIx64 " in section `%pA' " |
| 3972 | "with size %#" PRIx64 " (> 0x1000000)."), |
| 3973 | input_bfd, howto->name, name, (uint64_t) rel->r_offset, |
| 3974 | input_section, (uint64_t) input_section->size); |
| 3975 | break; |
| 3976 | } |
| 3977 | /* Fall through. */ |
| 3978 | default: |
| 3979 | (*info->callbacks->reloc_overflow) (info, |
| 3980 | &h->root, |
| 3981 | name, |
| 3982 | howto->name, |
| 3983 | (bfd_vma) 0, |
| 3984 | input_bfd, |
| 3985 | input_section, |
| 3986 | rel->r_offset); |
| 3987 | break; |
| 3988 | } |
| 3989 | |
| 3990 | ret_val = FALSE; |
| 3991 | } |
| 3992 | break; |
| 3993 | } |
| 3994 | } |
| 3995 | |
| 3996 | return ret_val; |
| 3997 | } |
| 3998 | |
| 3999 | static bfd_boolean |
| 4000 | elf64_ia64_finish_dynamic_symbol (bfd *output_bfd, |
| 4001 | struct bfd_link_info *info, |
| 4002 | struct elf_link_hash_entry *h, |
| 4003 | Elf_Internal_Sym *sym) |
| 4004 | { |
| 4005 | struct elf64_ia64_link_hash_table *ia64_info; |
| 4006 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 4007 | |
| 4008 | ia64_info = elf64_ia64_hash_table (info); |
| 4009 | if (ia64_info == NULL) |
| 4010 | return FALSE; |
| 4011 | |
| 4012 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); |
| 4013 | |
| 4014 | /* Fill in the PLT data, if required. */ |
| 4015 | if (dyn_i && dyn_i->want_plt) |
| 4016 | { |
| 4017 | bfd_byte *loc; |
| 4018 | asection *plt_sec; |
| 4019 | bfd_vma plt_addr, pltoff_addr, gp_val; |
| 4020 | |
| 4021 | gp_val = _bfd_get_gp_value (output_bfd); |
| 4022 | |
| 4023 | plt_sec = ia64_info->root.splt; |
| 4024 | plt_addr = 0; /* Not used as overriden by FIXUPs. */ |
| 4025 | pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); |
| 4026 | |
| 4027 | /* Initialize the FULL PLT entry, if needed. */ |
| 4028 | if (dyn_i->want_plt2) |
| 4029 | { |
| 4030 | loc = plt_sec->contents + dyn_i->plt2_offset; |
| 4031 | |
| 4032 | memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); |
| 4033 | ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); |
| 4034 | |
| 4035 | /* Mark the symbol as undefined, rather than as defined in the |
| 4036 | plt section. Leave the value alone. */ |
| 4037 | /* ??? We didn't redefine it in adjust_dynamic_symbol in the |
| 4038 | first place. But perhaps elflink.c did some for us. */ |
| 4039 | if (!h->def_regular) |
| 4040 | sym->st_shndx = SHN_UNDEF; |
| 4041 | } |
| 4042 | |
| 4043 | /* VMS: FIXFD. */ |
| 4044 | elf64_ia64_install_fixup |
| 4045 | (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, ia64_info->pltoff_sec, |
| 4046 | pltoff_addr - (ia64_info->pltoff_sec->output_section->vma |
| 4047 | + ia64_info->pltoff_sec->output_offset), 0); |
| 4048 | } |
| 4049 | |
| 4050 | /* Mark some specially defined symbols as absolute. */ |
| 4051 | if (h == ia64_info->root.hdynamic |
| 4052 | || h == ia64_info->root.hgot |
| 4053 | || h == ia64_info->root.hplt) |
| 4054 | sym->st_shndx = SHN_ABS; |
| 4055 | |
| 4056 | return TRUE; |
| 4057 | } |
| 4058 | |
| 4059 | static bfd_boolean |
| 4060 | elf64_ia64_finish_dynamic_sections (bfd *abfd, |
| 4061 | struct bfd_link_info *info) |
| 4062 | { |
| 4063 | struct elf64_ia64_link_hash_table *ia64_info; |
| 4064 | bfd *dynobj; |
| 4065 | |
| 4066 | ia64_info = elf64_ia64_hash_table (info); |
| 4067 | if (ia64_info == NULL) |
| 4068 | return FALSE; |
| 4069 | |
| 4070 | dynobj = ia64_info->root.dynobj; |
| 4071 | |
| 4072 | if (elf_hash_table (info)->dynamic_sections_created) |
| 4073 | { |
| 4074 | Elf64_External_Dyn *dyncon, *dynconend; |
| 4075 | asection *sdyn; |
| 4076 | asection *unwind_sec; |
| 4077 | bfd_vma gp_val; |
| 4078 | unsigned int gp_seg; |
| 4079 | bfd_vma gp_off; |
| 4080 | Elf_Internal_Phdr *phdr; |
| 4081 | Elf_Internal_Phdr *base_phdr; |
| 4082 | unsigned int unwind_seg = 0; |
| 4083 | unsigned int code_seg = 0; |
| 4084 | |
| 4085 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 4086 | BFD_ASSERT (sdyn != NULL); |
| 4087 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
| 4088 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 4089 | |
| 4090 | gp_val = _bfd_get_gp_value (abfd); |
| 4091 | phdr = _bfd_elf_find_segment_containing_section |
| 4092 | (info->output_bfd, ia64_info->pltoff_sec->output_section); |
| 4093 | BFD_ASSERT (phdr != NULL); |
| 4094 | base_phdr = elf_tdata (info->output_bfd)->phdr; |
| 4095 | gp_seg = phdr - base_phdr; |
| 4096 | gp_off = gp_val - phdr->p_vaddr; |
| 4097 | |
| 4098 | unwind_sec = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); |
| 4099 | if (unwind_sec != NULL) |
| 4100 | { |
| 4101 | asection *code_sec; |
| 4102 | |
| 4103 | phdr = _bfd_elf_find_segment_containing_section (abfd, unwind_sec); |
| 4104 | BFD_ASSERT (phdr != NULL); |
| 4105 | unwind_seg = phdr - base_phdr; |
| 4106 | |
| 4107 | code_sec = bfd_get_section_by_name (abfd, "$CODE$"); |
| 4108 | phdr = _bfd_elf_find_segment_containing_section (abfd, code_sec); |
| 4109 | BFD_ASSERT (phdr != NULL); |
| 4110 | code_seg = phdr - base_phdr; |
| 4111 | } |
| 4112 | |
| 4113 | for (; dyncon < dynconend; dyncon++) |
| 4114 | { |
| 4115 | Elf_Internal_Dyn dyn; |
| 4116 | |
| 4117 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
| 4118 | |
| 4119 | switch (dyn.d_tag) |
| 4120 | { |
| 4121 | case DT_IA_64_VMS_FIXUP_RELA_OFF: |
| 4122 | dyn.d_un.d_val += |
| 4123 | (ia64_info->fixups_sec->output_section->vma |
| 4124 | + ia64_info->fixups_sec->output_offset) |
| 4125 | - (sdyn->output_section->vma + sdyn->output_offset); |
| 4126 | break; |
| 4127 | |
| 4128 | case DT_IA_64_VMS_PLTGOT_OFFSET: |
| 4129 | dyn.d_un.d_val = gp_off; |
| 4130 | break; |
| 4131 | |
| 4132 | case DT_IA_64_VMS_PLTGOT_SEG: |
| 4133 | dyn.d_un.d_val = gp_seg; |
| 4134 | break; |
| 4135 | |
| 4136 | case DT_IA_64_VMS_UNWINDSZ: |
| 4137 | if (unwind_sec == NULL) |
| 4138 | { |
| 4139 | dyn.d_tag = DT_NULL; |
| 4140 | dyn.d_un.d_val = 0xdead; |
| 4141 | } |
| 4142 | else |
| 4143 | dyn.d_un.d_val = unwind_sec->size; |
| 4144 | break; |
| 4145 | |
| 4146 | case DT_IA_64_VMS_UNWIND_CODSEG: |
| 4147 | dyn.d_un.d_val = code_seg; |
| 4148 | break; |
| 4149 | |
| 4150 | case DT_IA_64_VMS_UNWIND_INFOSEG: |
| 4151 | case DT_IA_64_VMS_UNWIND_SEG: |
| 4152 | dyn.d_un.d_val = unwind_seg; |
| 4153 | break; |
| 4154 | |
| 4155 | case DT_IA_64_VMS_UNWIND_OFFSET: |
| 4156 | break; |
| 4157 | |
| 4158 | default: |
| 4159 | /* No need to rewrite the entry. */ |
| 4160 | continue; |
| 4161 | } |
| 4162 | |
| 4163 | bfd_elf64_swap_dyn_out (abfd, &dyn, dyncon); |
| 4164 | } |
| 4165 | } |
| 4166 | |
| 4167 | /* Handle transfer addresses. */ |
| 4168 | { |
| 4169 | asection *tfr_sec = ia64_info->transfer_sec; |
| 4170 | struct elf64_vms_transfer *tfr; |
| 4171 | struct elf_link_hash_entry *tfr3; |
| 4172 | |
| 4173 | tfr = (struct elf64_vms_transfer *)tfr_sec->contents; |
| 4174 | bfd_putl32 (6 * 8, tfr->size); |
| 4175 | bfd_putl64 (tfr_sec->output_section->vma |
| 4176 | + tfr_sec->output_offset |
| 4177 | + 6 * 8, tfr->tfradr3); |
| 4178 | |
| 4179 | tfr3 = elf_link_hash_lookup (elf_hash_table (info), "ELF$TFRADR", FALSE, |
| 4180 | FALSE, FALSE); |
| 4181 | |
| 4182 | if (tfr3 |
| 4183 | && (tfr3->root.type == bfd_link_hash_defined |
| 4184 | || tfr3->root.type == bfd_link_hash_defweak)) |
| 4185 | { |
| 4186 | asection *tfr3_sec = tfr3->root.u.def.section; |
| 4187 | bfd_vma tfr3_val; |
| 4188 | |
| 4189 | tfr3_val = (tfr3->root.u.def.value |
| 4190 | + tfr3_sec->output_section->vma |
| 4191 | + tfr3_sec->output_offset); |
| 4192 | |
| 4193 | bfd_putl64 (tfr3_val, tfr->tfr3_func); |
| 4194 | bfd_putl64 (_bfd_get_gp_value (info->output_bfd), tfr->tfr3_gp); |
| 4195 | } |
| 4196 | |
| 4197 | /* FIXME: set linker flags, |
| 4198 | handle lib$initialize. */ |
| 4199 | } |
| 4200 | |
| 4201 | return TRUE; |
| 4202 | } |
| 4203 | |
| 4204 | /* ELF file flag handling: */ |
| 4205 | |
| 4206 | /* Function to keep IA-64 specific file flags. */ |
| 4207 | static bfd_boolean |
| 4208 | elf64_ia64_set_private_flags (bfd *abfd, flagword flags) |
| 4209 | { |
| 4210 | BFD_ASSERT (!elf_flags_init (abfd) |
| 4211 | || elf_elfheader (abfd)->e_flags == flags); |
| 4212 | |
| 4213 | elf_elfheader (abfd)->e_flags = flags; |
| 4214 | elf_flags_init (abfd) = TRUE; |
| 4215 | return TRUE; |
| 4216 | } |
| 4217 | |
| 4218 | /* Merge backend specific data from an object file to the output |
| 4219 | object file when linking. */ |
| 4220 | static bfd_boolean |
| 4221 | elf64_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
| 4222 | { |
| 4223 | bfd *obfd = info->output_bfd; |
| 4224 | flagword out_flags; |
| 4225 | flagword in_flags; |
| 4226 | bfd_boolean ok = TRUE; |
| 4227 | |
| 4228 | /* FIXME: What should be checked when linking shared libraries? */ |
| 4229 | if ((ibfd->flags & DYNAMIC) != 0) |
| 4230 | return TRUE; |
| 4231 | |
| 4232 | /* Don't even pretend to support mixed-format linking. */ |
| 4233 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 4234 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 4235 | return FALSE; |
| 4236 | |
| 4237 | in_flags = elf_elfheader (ibfd)->e_flags; |
| 4238 | out_flags = elf_elfheader (obfd)->e_flags; |
| 4239 | |
| 4240 | if (! elf_flags_init (obfd)) |
| 4241 | { |
| 4242 | elf_flags_init (obfd) = TRUE; |
| 4243 | elf_elfheader (obfd)->e_flags = in_flags; |
| 4244 | |
| 4245 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
| 4246 | && bfd_get_arch_info (obfd)->the_default) |
| 4247 | { |
| 4248 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
| 4249 | bfd_get_mach (ibfd)); |
| 4250 | } |
| 4251 | |
| 4252 | return TRUE; |
| 4253 | } |
| 4254 | |
| 4255 | /* Check flag compatibility. */ |
| 4256 | if (in_flags == out_flags) |
| 4257 | return TRUE; |
| 4258 | |
| 4259 | /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ |
| 4260 | if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) |
| 4261 | elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; |
| 4262 | |
| 4263 | if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) |
| 4264 | { |
| 4265 | _bfd_error_handler |
| 4266 | (_("%pB: linking trap-on-NULL-dereference with non-trapping files"), |
| 4267 | ibfd); |
| 4268 | |
| 4269 | bfd_set_error (bfd_error_bad_value); |
| 4270 | ok = FALSE; |
| 4271 | } |
| 4272 | if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) |
| 4273 | { |
| 4274 | _bfd_error_handler |
| 4275 | (_("%pB: linking big-endian files with little-endian files"), |
| 4276 | ibfd); |
| 4277 | |
| 4278 | bfd_set_error (bfd_error_bad_value); |
| 4279 | ok = FALSE; |
| 4280 | } |
| 4281 | if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) |
| 4282 | { |
| 4283 | _bfd_error_handler |
| 4284 | (_("%pB: linking 64-bit files with 32-bit files"), |
| 4285 | ibfd); |
| 4286 | |
| 4287 | bfd_set_error (bfd_error_bad_value); |
| 4288 | ok = FALSE; |
| 4289 | } |
| 4290 | if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) |
| 4291 | { |
| 4292 | _bfd_error_handler |
| 4293 | (_("%pB: linking constant-gp files with non-constant-gp files"), |
| 4294 | ibfd); |
| 4295 | |
| 4296 | bfd_set_error (bfd_error_bad_value); |
| 4297 | ok = FALSE; |
| 4298 | } |
| 4299 | if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) |
| 4300 | != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) |
| 4301 | { |
| 4302 | _bfd_error_handler |
| 4303 | (_("%pB: linking auto-pic files with non-auto-pic files"), |
| 4304 | ibfd); |
| 4305 | |
| 4306 | bfd_set_error (bfd_error_bad_value); |
| 4307 | ok = FALSE; |
| 4308 | } |
| 4309 | |
| 4310 | return ok; |
| 4311 | } |
| 4312 | |
| 4313 | static bfd_boolean |
| 4314 | elf64_ia64_print_private_bfd_data (bfd *abfd, void * ptr) |
| 4315 | { |
| 4316 | FILE *file = (FILE *) ptr; |
| 4317 | flagword flags = elf_elfheader (abfd)->e_flags; |
| 4318 | |
| 4319 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 4320 | |
| 4321 | fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", |
| 4322 | (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", |
| 4323 | (flags & EF_IA_64_EXT) ? "EXT, " : "", |
| 4324 | (flags & EF_IA_64_BE) ? "BE, " : "LE, ", |
| 4325 | (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", |
| 4326 | (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", |
| 4327 | (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", |
| 4328 | (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", |
| 4329 | (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); |
| 4330 | |
| 4331 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 4332 | return TRUE; |
| 4333 | } |
| 4334 | |
| 4335 | static enum elf_reloc_type_class |
| 4336 | elf64_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 4337 | const asection *rel_sec ATTRIBUTE_UNUSED, |
| 4338 | const Elf_Internal_Rela *rela) |
| 4339 | { |
| 4340 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
| 4341 | { |
| 4342 | case R_IA64_REL32MSB: |
| 4343 | case R_IA64_REL32LSB: |
| 4344 | case R_IA64_REL64MSB: |
| 4345 | case R_IA64_REL64LSB: |
| 4346 | return reloc_class_relative; |
| 4347 | case R_IA64_IPLTMSB: |
| 4348 | case R_IA64_IPLTLSB: |
| 4349 | return reloc_class_plt; |
| 4350 | case R_IA64_COPY: |
| 4351 | return reloc_class_copy; |
| 4352 | default: |
| 4353 | return reloc_class_normal; |
| 4354 | } |
| 4355 | } |
| 4356 | |
| 4357 | static const struct bfd_elf_special_section elf64_ia64_special_sections[] = |
| 4358 | { |
| 4359 | { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
| 4360 | { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
| 4361 | { NULL, 0, 0, 0, 0 } |
| 4362 | }; |
| 4363 | |
| 4364 | static bfd_boolean |
| 4365 | elf64_ia64_object_p (bfd *abfd) |
| 4366 | { |
| 4367 | asection *sec; |
| 4368 | asection *group, *unwi, *unw; |
| 4369 | flagword flags; |
| 4370 | const char *name; |
| 4371 | char *unwi_name, *unw_name; |
| 4372 | size_t amt; |
| 4373 | |
| 4374 | if (abfd->flags & DYNAMIC) |
| 4375 | return TRUE; |
| 4376 | |
| 4377 | /* Flags for fake group section. */ |
| 4378 | flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE |
| 4379 | | SEC_EXCLUDE); |
| 4380 | |
| 4381 | /* We add a fake section group for each .gnu.linkonce.t.* section, |
| 4382 | which isn't in a section group, and its unwind sections. */ |
| 4383 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 4384 | { |
| 4385 | if (elf_sec_group (sec) == NULL |
| 4386 | && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) |
| 4387 | == (SEC_LINK_ONCE | SEC_CODE)) |
| 4388 | && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) |
| 4389 | { |
| 4390 | name = sec->name + 16; |
| 4391 | |
| 4392 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); |
| 4393 | unwi_name = bfd_alloc (abfd, amt); |
| 4394 | if (!unwi_name) |
| 4395 | return FALSE; |
| 4396 | |
| 4397 | strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); |
| 4398 | unwi = bfd_get_section_by_name (abfd, unwi_name); |
| 4399 | |
| 4400 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); |
| 4401 | unw_name = bfd_alloc (abfd, amt); |
| 4402 | if (!unw_name) |
| 4403 | return FALSE; |
| 4404 | |
| 4405 | strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); |
| 4406 | unw = bfd_get_section_by_name (abfd, unw_name); |
| 4407 | |
| 4408 | /* We need to create a fake group section for it and its |
| 4409 | unwind sections. */ |
| 4410 | group = bfd_make_section_anyway_with_flags (abfd, name, |
| 4411 | flags); |
| 4412 | if (group == NULL) |
| 4413 | return FALSE; |
| 4414 | |
| 4415 | /* Move the fake group section to the beginning. */ |
| 4416 | bfd_section_list_remove (abfd, group); |
| 4417 | bfd_section_list_prepend (abfd, group); |
| 4418 | |
| 4419 | elf_next_in_group (group) = sec; |
| 4420 | |
| 4421 | elf_group_name (sec) = name; |
| 4422 | elf_next_in_group (sec) = sec; |
| 4423 | elf_sec_group (sec) = group; |
| 4424 | |
| 4425 | if (unwi) |
| 4426 | { |
| 4427 | elf_group_name (unwi) = name; |
| 4428 | elf_next_in_group (unwi) = sec; |
| 4429 | elf_next_in_group (sec) = unwi; |
| 4430 | elf_sec_group (unwi) = group; |
| 4431 | } |
| 4432 | |
| 4433 | if (unw) |
| 4434 | { |
| 4435 | elf_group_name (unw) = name; |
| 4436 | if (unwi) |
| 4437 | { |
| 4438 | elf_next_in_group (unw) = elf_next_in_group (unwi); |
| 4439 | elf_next_in_group (unwi) = unw; |
| 4440 | } |
| 4441 | else |
| 4442 | { |
| 4443 | elf_next_in_group (unw) = sec; |
| 4444 | elf_next_in_group (sec) = unw; |
| 4445 | } |
| 4446 | elf_sec_group (unw) = group; |
| 4447 | } |
| 4448 | |
| 4449 | /* Fake SHT_GROUP section header. */ |
| 4450 | elf_section_data (group)->this_hdr.bfd_section = group; |
| 4451 | elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; |
| 4452 | } |
| 4453 | } |
| 4454 | return TRUE; |
| 4455 | } |
| 4456 | |
| 4457 | /* Handle an IA-64 specific section when reading an object file. This |
| 4458 | is called when bfd_section_from_shdr finds a section with an unknown |
| 4459 | type. */ |
| 4460 | |
| 4461 | static bfd_boolean |
| 4462 | elf64_vms_section_from_shdr (bfd *abfd, |
| 4463 | Elf_Internal_Shdr *hdr, |
| 4464 | const char *name, |
| 4465 | int shindex) |
| 4466 | { |
| 4467 | flagword secflags = 0; |
| 4468 | |
| 4469 | switch (hdr->sh_type) |
| 4470 | { |
| 4471 | case SHT_IA_64_VMS_TRACE: |
| 4472 | case SHT_IA_64_VMS_DEBUG: |
| 4473 | case SHT_IA_64_VMS_DEBUG_STR: |
| 4474 | secflags = SEC_DEBUGGING; |
| 4475 | break; |
| 4476 | |
| 4477 | case SHT_IA_64_UNWIND: |
| 4478 | case SHT_IA_64_HP_OPT_ANOT: |
| 4479 | break; |
| 4480 | |
| 4481 | case SHT_IA_64_EXT: |
| 4482 | if (strcmp (name, ELF_STRING_ia64_archext) != 0) |
| 4483 | return FALSE; |
| 4484 | break; |
| 4485 | |
| 4486 | default: |
| 4487 | return FALSE; |
| 4488 | } |
| 4489 | |
| 4490 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
| 4491 | return FALSE; |
| 4492 | |
| 4493 | if (secflags != 0) |
| 4494 | { |
| 4495 | asection *newsect = hdr->bfd_section; |
| 4496 | |
| 4497 | if (!bfd_set_section_flags (newsect, |
| 4498 | bfd_section_flags (newsect) | secflags)) |
| 4499 | return FALSE; |
| 4500 | } |
| 4501 | |
| 4502 | return TRUE; |
| 4503 | } |
| 4504 | |
| 4505 | static bfd_boolean |
| 4506 | elf64_vms_object_p (bfd *abfd) |
| 4507 | { |
| 4508 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); |
| 4509 | Elf_Internal_Phdr *i_phdr = elf_tdata (abfd)->phdr; |
| 4510 | unsigned int i; |
| 4511 | unsigned int num_text = 0; |
| 4512 | unsigned int num_data = 0; |
| 4513 | unsigned int num_rodata = 0; |
| 4514 | char name[16]; |
| 4515 | |
| 4516 | if (!elf64_ia64_object_p (abfd)) |
| 4517 | return FALSE; |
| 4518 | |
| 4519 | /* Many VMS compilers do not generate sections for the corresponding |
| 4520 | segment. This is boring as binutils tools won't be able to disassemble |
| 4521 | the code. So we simply create all the missing sections. */ |
| 4522 | for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) |
| 4523 | { |
| 4524 | /* Is there a section for this segment? */ |
| 4525 | bfd_vma base_vma = i_phdr->p_vaddr; |
| 4526 | bfd_vma limit_vma = base_vma + i_phdr->p_filesz; |
| 4527 | |
| 4528 | if (i_phdr->p_type != PT_LOAD) |
| 4529 | continue; |
| 4530 | |
| 4531 | /* We need to cover from base_vms to limit_vma. */ |
| 4532 | again: |
| 4533 | while (base_vma < limit_vma) |
| 4534 | { |
| 4535 | bfd_vma next_vma = limit_vma; |
| 4536 | asection *nsec; |
| 4537 | asection *sec; |
| 4538 | flagword flags; |
| 4539 | char *nname = NULL; |
| 4540 | |
| 4541 | /* Find a section covering [base_vma;limit_vma) */ |
| 4542 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 4543 | { |
| 4544 | /* Skip uninteresting sections (either not in memory or |
| 4545 | below base_vma. */ |
| 4546 | if ((sec->flags & (SEC_ALLOC | SEC_LOAD)) == 0 |
| 4547 | || sec->vma + sec->size <= base_vma) |
| 4548 | continue; |
| 4549 | if (sec->vma <= base_vma) |
| 4550 | { |
| 4551 | /* This section covers (maybe partially) the beginning |
| 4552 | of the range. */ |
| 4553 | base_vma = sec->vma + sec->size; |
| 4554 | goto again; |
| 4555 | } |
| 4556 | if (sec->vma < next_vma) |
| 4557 | { |
| 4558 | /* This section partially covers the end of the range. |
| 4559 | Used to compute the size of the hole. */ |
| 4560 | next_vma = sec->vma; |
| 4561 | } |
| 4562 | } |
| 4563 | |
| 4564 | /* No section covering [base_vma; next_vma). Create a fake one. */ |
| 4565 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; |
| 4566 | if (i_phdr->p_flags & PF_X) |
| 4567 | { |
| 4568 | flags |= SEC_CODE; |
| 4569 | if (num_text++ == 0) |
| 4570 | nname = ".text"; |
| 4571 | else |
| 4572 | sprintf (name, ".text$%u", num_text); |
| 4573 | } |
| 4574 | else if ((i_phdr->p_flags & (PF_R | PF_W)) == PF_R) |
| 4575 | { |
| 4576 | flags |= SEC_READONLY; |
| 4577 | sprintf (name, ".rodata$%u", num_rodata++); |
| 4578 | } |
| 4579 | else |
| 4580 | { |
| 4581 | flags |= SEC_DATA; |
| 4582 | sprintf (name, ".data$%u", num_data++); |
| 4583 | } |
| 4584 | |
| 4585 | /* Allocate name. */ |
| 4586 | if (nname == NULL) |
| 4587 | { |
| 4588 | size_t name_len = strlen (name) + 1; |
| 4589 | nname = bfd_alloc (abfd, name_len); |
| 4590 | if (nname == NULL) |
| 4591 | return FALSE; |
| 4592 | memcpy (nname, name, name_len); |
| 4593 | } |
| 4594 | |
| 4595 | /* Create and fill new section. */ |
| 4596 | nsec = bfd_make_section_anyway_with_flags (abfd, nname, flags); |
| 4597 | if (nsec == NULL) |
| 4598 | return FALSE; |
| 4599 | nsec->vma = base_vma; |
| 4600 | nsec->size = next_vma - base_vma; |
| 4601 | nsec->filepos = i_phdr->p_offset + (base_vma - i_phdr->p_vaddr); |
| 4602 | |
| 4603 | base_vma = next_vma; |
| 4604 | } |
| 4605 | } |
| 4606 | return TRUE; |
| 4607 | } |
| 4608 | |
| 4609 | static bfd_boolean |
| 4610 | elf64_vms_init_file_header (bfd *abfd, struct bfd_link_info *info) |
| 4611 | { |
| 4612 | Elf_Internal_Ehdr *i_ehdrp; |
| 4613 | |
| 4614 | if (!_bfd_elf_init_file_header (abfd, info)) |
| 4615 | return FALSE; |
| 4616 | |
| 4617 | i_ehdrp = elf_elfheader (abfd); |
| 4618 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_OPENVMS; |
| 4619 | i_ehdrp->e_ident[EI_ABIVERSION] = 2; |
| 4620 | return TRUE; |
| 4621 | } |
| 4622 | |
| 4623 | static bfd_boolean |
| 4624 | elf64_vms_section_processing (bfd *abfd ATTRIBUTE_UNUSED, |
| 4625 | Elf_Internal_Shdr *hdr) |
| 4626 | { |
| 4627 | if (hdr->bfd_section != NULL) |
| 4628 | { |
| 4629 | const char *name = bfd_section_name (hdr->bfd_section); |
| 4630 | |
| 4631 | if (strcmp (name, ".text") == 0) |
| 4632 | hdr->sh_flags |= SHF_IA_64_VMS_SHARED; |
| 4633 | else if ((strcmp (name, ".debug") == 0) |
| 4634 | || (strcmp (name, ".debug_abbrev") == 0) |
| 4635 | || (strcmp (name, ".debug_aranges") == 0) |
| 4636 | || (strcmp (name, ".debug_frame") == 0) |
| 4637 | || (strcmp (name, ".debug_info") == 0) |
| 4638 | || (strcmp (name, ".debug_loc") == 0) |
| 4639 | || (strcmp (name, ".debug_macinfo") == 0) |
| 4640 | || (strcmp (name, ".debug_pubnames") == 0) |
| 4641 | || (strcmp (name, ".debug_pubtypes") == 0)) |
| 4642 | hdr->sh_type = SHT_IA_64_VMS_DEBUG; |
| 4643 | else if ((strcmp (name, ".debug_line") == 0) |
| 4644 | || (strcmp (name, ".debug_ranges") == 0) |
| 4645 | || (strcmp (name, ".trace_info") == 0) |
| 4646 | || (strcmp (name, ".trace_abbrev") == 0) |
| 4647 | || (strcmp (name, ".trace_aranges") == 0)) |
| 4648 | hdr->sh_type = SHT_IA_64_VMS_TRACE; |
| 4649 | else if (strcmp (name, ".debug_str") == 0) |
| 4650 | hdr->sh_type = SHT_IA_64_VMS_DEBUG_STR; |
| 4651 | } |
| 4652 | |
| 4653 | return TRUE; |
| 4654 | } |
| 4655 | |
| 4656 | /* The final processing done just before writing out a VMS IA-64 ELF |
| 4657 | object file. */ |
| 4658 | |
| 4659 | static bfd_boolean |
| 4660 | elf64_vms_final_write_processing (bfd *abfd) |
| 4661 | { |
| 4662 | Elf_Internal_Shdr *hdr; |
| 4663 | asection *s; |
| 4664 | int unwind_info_sect_idx = 0; |
| 4665 | |
| 4666 | for (s = abfd->sections; s; s = s->next) |
| 4667 | { |
| 4668 | hdr = &elf_section_data (s)->this_hdr; |
| 4669 | |
| 4670 | if (strcmp (bfd_section_name (hdr->bfd_section), |
| 4671 | ".IA_64.unwind_info") == 0) |
| 4672 | unwind_info_sect_idx = elf_section_data (s)->this_idx; |
| 4673 | |
| 4674 | switch (hdr->sh_type) |
| 4675 | { |
| 4676 | case SHT_IA_64_UNWIND: |
| 4677 | /* VMS requires sh_info to point to the unwind info section. */ |
| 4678 | hdr->sh_info = unwind_info_sect_idx; |
| 4679 | break; |
| 4680 | } |
| 4681 | } |
| 4682 | |
| 4683 | if (! elf_flags_init (abfd)) |
| 4684 | { |
| 4685 | unsigned long flags = 0; |
| 4686 | |
| 4687 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) |
| 4688 | flags |= EF_IA_64_BE; |
| 4689 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) |
| 4690 | flags |= EF_IA_64_ABI64; |
| 4691 | |
| 4692 | elf_elfheader (abfd)->e_flags = flags; |
| 4693 | elf_flags_init (abfd) = TRUE; |
| 4694 | } |
| 4695 | return _bfd_elf_final_write_processing (abfd); |
| 4696 | } |
| 4697 | |
| 4698 | static bfd_boolean |
| 4699 | elf64_vms_write_shdrs_and_ehdr (bfd *abfd) |
| 4700 | { |
| 4701 | unsigned char needed_count[8]; |
| 4702 | |
| 4703 | if (!bfd_elf64_write_shdrs_and_ehdr (abfd)) |
| 4704 | return FALSE; |
| 4705 | |
| 4706 | bfd_putl64 (elf_ia64_vms_tdata (abfd)->needed_count, needed_count); |
| 4707 | |
| 4708 | if (bfd_seek (abfd, sizeof (Elf64_External_Ehdr), SEEK_SET) != 0 |
| 4709 | || bfd_bwrite (needed_count, 8, abfd) != 8) |
| 4710 | return FALSE; |
| 4711 | |
| 4712 | return TRUE; |
| 4713 | } |
| 4714 | |
| 4715 | static bfd_boolean |
| 4716 | elf64_vms_close_and_cleanup (bfd *abfd) |
| 4717 | { |
| 4718 | if (bfd_get_format (abfd) == bfd_object) |
| 4719 | { |
| 4720 | long isize; |
| 4721 | |
| 4722 | /* Pad to 8 byte boundary for IPF/VMS. */ |
| 4723 | isize = bfd_get_size (abfd); |
| 4724 | if ((isize & 7) != 0) |
| 4725 | { |
| 4726 | int ishort = 8 - (isize & 7); |
| 4727 | bfd_uint64_t pad = 0; |
| 4728 | |
| 4729 | bfd_seek (abfd, isize, SEEK_SET); |
| 4730 | bfd_bwrite (&pad, ishort, abfd); |
| 4731 | } |
| 4732 | } |
| 4733 | |
| 4734 | return _bfd_elf_close_and_cleanup (abfd); |
| 4735 | } |
| 4736 | |
| 4737 | /* Add symbols from an ELF object file to the linker hash table. */ |
| 4738 | |
| 4739 | static bfd_boolean |
| 4740 | elf64_vms_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
| 4741 | { |
| 4742 | Elf_Internal_Shdr *hdr; |
| 4743 | bfd_size_type symcount; |
| 4744 | bfd_size_type extsymcount; |
| 4745 | bfd_size_type extsymoff; |
| 4746 | struct elf_link_hash_entry **sym_hash; |
| 4747 | bfd_boolean dynamic; |
| 4748 | Elf_Internal_Sym *isymbuf = NULL; |
| 4749 | Elf_Internal_Sym *isym; |
| 4750 | Elf_Internal_Sym *isymend; |
| 4751 | const struct elf_backend_data *bed; |
| 4752 | struct elf_link_hash_table *htab; |
| 4753 | bfd_size_type amt; |
| 4754 | |
| 4755 | htab = elf_hash_table (info); |
| 4756 | bed = get_elf_backend_data (abfd); |
| 4757 | |
| 4758 | if ((abfd->flags & DYNAMIC) == 0) |
| 4759 | dynamic = FALSE; |
| 4760 | else |
| 4761 | { |
| 4762 | dynamic = TRUE; |
| 4763 | |
| 4764 | /* You can't use -r against a dynamic object. Also, there's no |
| 4765 | hope of using a dynamic object which does not exactly match |
| 4766 | the format of the output file. */ |
| 4767 | if (bfd_link_relocatable (info) |
| 4768 | || !is_elf_hash_table (htab) |
| 4769 | || info->output_bfd->xvec != abfd->xvec) |
| 4770 | { |
| 4771 | if (bfd_link_relocatable (info)) |
| 4772 | bfd_set_error (bfd_error_invalid_operation); |
| 4773 | else |
| 4774 | bfd_set_error (bfd_error_wrong_format); |
| 4775 | goto error_return; |
| 4776 | } |
| 4777 | } |
| 4778 | |
| 4779 | if (! dynamic) |
| 4780 | { |
| 4781 | /* If we are creating a shared library, create all the dynamic |
| 4782 | sections immediately. We need to attach them to something, |
| 4783 | so we attach them to this BFD, provided it is the right |
| 4784 | format. FIXME: If there are no input BFD's of the same |
| 4785 | format as the output, we can't make a shared library. */ |
| 4786 | if (bfd_link_pic (info) |
| 4787 | && is_elf_hash_table (htab) |
| 4788 | && info->output_bfd->xvec == abfd->xvec |
| 4789 | && !htab->dynamic_sections_created) |
| 4790 | { |
| 4791 | if (! elf64_ia64_create_dynamic_sections (abfd, info)) |
| 4792 | goto error_return; |
| 4793 | } |
| 4794 | } |
| 4795 | else if (!is_elf_hash_table (htab)) |
| 4796 | goto error_return; |
| 4797 | else |
| 4798 | { |
| 4799 | asection *s; |
| 4800 | bfd_byte *dynbuf; |
| 4801 | bfd_byte *extdyn; |
| 4802 | |
| 4803 | /* ld --just-symbols and dynamic objects don't mix very well. |
| 4804 | ld shouldn't allow it. */ |
| 4805 | if ((s = abfd->sections) != NULL |
| 4806 | && s->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
| 4807 | abort (); |
| 4808 | |
| 4809 | /* Be sure there are dynamic sections. */ |
| 4810 | if (! elf64_ia64_create_dynamic_sections (htab->dynobj, info)) |
| 4811 | goto error_return; |
| 4812 | |
| 4813 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
| 4814 | if (s == NULL) |
| 4815 | { |
| 4816 | /* VMS libraries do not have dynamic sections. Create one from |
| 4817 | the segment. */ |
| 4818 | Elf_Internal_Phdr *phdr; |
| 4819 | unsigned int i, phnum; |
| 4820 | |
| 4821 | phdr = elf_tdata (abfd)->phdr; |
| 4822 | if (phdr == NULL) |
| 4823 | goto error_return; |
| 4824 | phnum = elf_elfheader (abfd)->e_phnum; |
| 4825 | for (i = 0; i < phnum; phdr++) |
| 4826 | if (phdr->p_type == PT_DYNAMIC) |
| 4827 | { |
| 4828 | s = bfd_make_section (abfd, ".dynamic"); |
| 4829 | if (s == NULL) |
| 4830 | goto error_return; |
| 4831 | s->vma = phdr->p_vaddr; |
| 4832 | s->lma = phdr->p_paddr; |
| 4833 | s->size = phdr->p_filesz; |
| 4834 | s->filepos = phdr->p_offset; |
| 4835 | s->flags |= SEC_HAS_CONTENTS; |
| 4836 | s->alignment_power = bfd_log2 (phdr->p_align); |
| 4837 | break; |
| 4838 | } |
| 4839 | if (s == NULL) |
| 4840 | goto error_return; |
| 4841 | } |
| 4842 | |
| 4843 | /* Extract IDENT. */ |
| 4844 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
| 4845 | { |
| 4846 | error_free_dyn: |
| 4847 | free (dynbuf); |
| 4848 | goto error_return; |
| 4849 | } |
| 4850 | |
| 4851 | for (extdyn = dynbuf; |
| 4852 | extdyn < dynbuf + s->size; |
| 4853 | extdyn += bed->s->sizeof_dyn) |
| 4854 | { |
| 4855 | Elf_Internal_Dyn dyn; |
| 4856 | |
| 4857 | bed->s->swap_dyn_in (abfd, extdyn, &dyn); |
| 4858 | if (dyn.d_tag == DT_IA_64_VMS_IDENT) |
| 4859 | { |
| 4860 | bfd_uint64_t tagv = dyn.d_un.d_val; |
| 4861 | elf_ia64_vms_ident (abfd) = tagv; |
| 4862 | break; |
| 4863 | } |
| 4864 | } |
| 4865 | if (extdyn >= dynbuf + s->size) |
| 4866 | { |
| 4867 | /* Ident not found. */ |
| 4868 | goto error_free_dyn; |
| 4869 | } |
| 4870 | free (dynbuf); |
| 4871 | |
| 4872 | /* We do not want to include any of the sections in a dynamic |
| 4873 | object in the output file. We hack by simply clobbering the |
| 4874 | list of sections in the BFD. This could be handled more |
| 4875 | cleanly by, say, a new section flag; the existing |
| 4876 | SEC_NEVER_LOAD flag is not the one we want, because that one |
| 4877 | still implies that the section takes up space in the output |
| 4878 | file. */ |
| 4879 | bfd_section_list_clear (abfd); |
| 4880 | |
| 4881 | /* FIXME: should we detect if this library is already included ? |
| 4882 | This should be harmless and shouldn't happen in practice. */ |
| 4883 | } |
| 4884 | |
| 4885 | hdr = &elf_tdata (abfd)->symtab_hdr; |
| 4886 | symcount = hdr->sh_size / bed->s->sizeof_sym; |
| 4887 | |
| 4888 | /* The sh_info field of the symtab header tells us where the |
| 4889 | external symbols start. We don't care about the local symbols at |
| 4890 | this point. */ |
| 4891 | extsymcount = symcount - hdr->sh_info; |
| 4892 | extsymoff = hdr->sh_info; |
| 4893 | |
| 4894 | sym_hash = NULL; |
| 4895 | if (extsymcount != 0) |
| 4896 | { |
| 4897 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff, |
| 4898 | NULL, NULL, NULL); |
| 4899 | if (isymbuf == NULL) |
| 4900 | goto error_return; |
| 4901 | |
| 4902 | /* We store a pointer to the hash table entry for each external |
| 4903 | symbol. */ |
| 4904 | amt = extsymcount * sizeof (struct elf_link_hash_entry *); |
| 4905 | sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt); |
| 4906 | if (sym_hash == NULL) |
| 4907 | goto error_free_sym; |
| 4908 | elf_sym_hashes (abfd) = sym_hash; |
| 4909 | } |
| 4910 | |
| 4911 | for (isym = isymbuf, isymend = isymbuf + extsymcount; |
| 4912 | isym < isymend; |
| 4913 | isym++, sym_hash++) |
| 4914 | { |
| 4915 | int bind; |
| 4916 | bfd_vma value; |
| 4917 | asection *sec, *new_sec; |
| 4918 | flagword flags; |
| 4919 | const char *name; |
| 4920 | struct elf_link_hash_entry *h; |
| 4921 | bfd_boolean definition; |
| 4922 | bfd_boolean size_change_ok; |
| 4923 | bfd_boolean type_change_ok; |
| 4924 | bfd_boolean common; |
| 4925 | unsigned int old_alignment; |
| 4926 | bfd *old_bfd; |
| 4927 | |
| 4928 | flags = BSF_NO_FLAGS; |
| 4929 | sec = NULL; |
| 4930 | value = isym->st_value; |
| 4931 | *sym_hash = NULL; |
| 4932 | common = bed->common_definition (isym); |
| 4933 | |
| 4934 | bind = ELF_ST_BIND (isym->st_info); |
| 4935 | switch (bind) |
| 4936 | { |
| 4937 | case STB_LOCAL: |
| 4938 | /* This should be impossible, since ELF requires that all |
| 4939 | global symbols follow all local symbols, and that sh_info |
| 4940 | point to the first global symbol. Unfortunately, Irix 5 |
| 4941 | screws this up. */ |
| 4942 | continue; |
| 4943 | |
| 4944 | case STB_GLOBAL: |
| 4945 | if (isym->st_shndx != SHN_UNDEF && !common) |
| 4946 | flags = BSF_GLOBAL; |
| 4947 | break; |
| 4948 | |
| 4949 | case STB_WEAK: |
| 4950 | flags = BSF_WEAK; |
| 4951 | break; |
| 4952 | |
| 4953 | case STB_GNU_UNIQUE: |
| 4954 | flags = BSF_GNU_UNIQUE; |
| 4955 | break; |
| 4956 | |
| 4957 | default: |
| 4958 | /* Leave it up to the processor backend. */ |
| 4959 | break; |
| 4960 | } |
| 4961 | |
| 4962 | if (isym->st_shndx == SHN_UNDEF) |
| 4963 | sec = bfd_und_section_ptr; |
| 4964 | else if (isym->st_shndx == SHN_ABS) |
| 4965 | sec = bfd_abs_section_ptr; |
| 4966 | else if (isym->st_shndx == SHN_COMMON) |
| 4967 | { |
| 4968 | sec = bfd_com_section_ptr; |
| 4969 | /* What ELF calls the size we call the value. What ELF |
| 4970 | calls the value we call the alignment. */ |
| 4971 | value = isym->st_size; |
| 4972 | } |
| 4973 | else |
| 4974 | { |
| 4975 | sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 4976 | if (sec == NULL) |
| 4977 | sec = bfd_abs_section_ptr; |
| 4978 | else if (sec->kept_section) |
| 4979 | { |
| 4980 | /* Symbols from discarded section are undefined. We keep |
| 4981 | its visibility. */ |
| 4982 | sec = bfd_und_section_ptr; |
| 4983 | isym->st_shndx = SHN_UNDEF; |
| 4984 | } |
| 4985 | else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
| 4986 | value -= sec->vma; |
| 4987 | } |
| 4988 | |
| 4989 | name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, |
| 4990 | isym->st_name); |
| 4991 | if (name == NULL) |
| 4992 | goto error_free_vers; |
| 4993 | |
| 4994 | if (bed->elf_add_symbol_hook) |
| 4995 | { |
| 4996 | if (! (*bed->elf_add_symbol_hook) (abfd, info, isym, &name, &flags, |
| 4997 | &sec, &value)) |
| 4998 | goto error_free_vers; |
| 4999 | |
| 5000 | /* The hook function sets the name to NULL if this symbol |
| 5001 | should be skipped for some reason. */ |
| 5002 | if (name == NULL) |
| 5003 | continue; |
| 5004 | } |
| 5005 | |
| 5006 | /* Sanity check that all possibilities were handled. */ |
| 5007 | if (sec == NULL) |
| 5008 | { |
| 5009 | bfd_set_error (bfd_error_bad_value); |
| 5010 | goto error_free_vers; |
| 5011 | } |
| 5012 | |
| 5013 | if (bfd_is_und_section (sec) |
| 5014 | || bfd_is_com_section (sec)) |
| 5015 | definition = FALSE; |
| 5016 | else |
| 5017 | definition = TRUE; |
| 5018 | |
| 5019 | size_change_ok = FALSE; |
| 5020 | type_change_ok = bed->type_change_ok; |
| 5021 | old_alignment = 0; |
| 5022 | old_bfd = NULL; |
| 5023 | new_sec = sec; |
| 5024 | |
| 5025 | if (! bfd_is_und_section (sec)) |
| 5026 | h = elf_link_hash_lookup (htab, name, TRUE, FALSE, FALSE); |
| 5027 | else |
| 5028 | h = ((struct elf_link_hash_entry *) bfd_wrapped_link_hash_lookup |
| 5029 | (abfd, info, name, TRUE, FALSE, FALSE)); |
| 5030 | if (h == NULL) |
| 5031 | goto error_free_sym; |
| 5032 | |
| 5033 | *sym_hash = h; |
| 5034 | |
| 5035 | if (is_elf_hash_table (htab)) |
| 5036 | { |
| 5037 | while (h->root.type == bfd_link_hash_indirect |
| 5038 | || h->root.type == bfd_link_hash_warning) |
| 5039 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5040 | |
| 5041 | /* Remember the old alignment if this is a common symbol, so |
| 5042 | that we don't reduce the alignment later on. We can't |
| 5043 | check later, because _bfd_generic_link_add_one_symbol |
| 5044 | will set a default for the alignment which we want to |
| 5045 | override. We also remember the old bfd where the existing |
| 5046 | definition comes from. */ |
| 5047 | switch (h->root.type) |
| 5048 | { |
| 5049 | default: |
| 5050 | break; |
| 5051 | |
| 5052 | case bfd_link_hash_defined: |
| 5053 | if (abfd->selective_search) |
| 5054 | continue; |
| 5055 | /* Fall-through. */ |
| 5056 | case bfd_link_hash_defweak: |
| 5057 | old_bfd = h->root.u.def.section->owner; |
| 5058 | break; |
| 5059 | |
| 5060 | case bfd_link_hash_common: |
| 5061 | old_bfd = h->root.u.c.p->section->owner; |
| 5062 | old_alignment = h->root.u.c.p->alignment_power; |
| 5063 | break; |
| 5064 | } |
| 5065 | } |
| 5066 | |
| 5067 | if (! (_bfd_generic_link_add_one_symbol |
| 5068 | (info, abfd, name, flags, sec, value, NULL, FALSE, bed->collect, |
| 5069 | (struct bfd_link_hash_entry **) sym_hash))) |
| 5070 | goto error_free_vers; |
| 5071 | |
| 5072 | h = *sym_hash; |
| 5073 | while (h->root.type == bfd_link_hash_indirect |
| 5074 | || h->root.type == bfd_link_hash_warning) |
| 5075 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5076 | |
| 5077 | *sym_hash = h; |
| 5078 | if (definition) |
| 5079 | h->unique_global = (flags & BSF_GNU_UNIQUE) != 0; |
| 5080 | |
| 5081 | /* Set the alignment of a common symbol. */ |
| 5082 | if ((common || bfd_is_com_section (sec)) |
| 5083 | && h->root.type == bfd_link_hash_common) |
| 5084 | { |
| 5085 | unsigned int align; |
| 5086 | |
| 5087 | if (common) |
| 5088 | align = bfd_log2 (isym->st_value); |
| 5089 | else |
| 5090 | { |
| 5091 | /* The new symbol is a common symbol in a shared object. |
| 5092 | We need to get the alignment from the section. */ |
| 5093 | align = new_sec->alignment_power; |
| 5094 | } |
| 5095 | if (align > old_alignment |
| 5096 | /* Permit an alignment power of zero if an alignment of one |
| 5097 | is specified and no other alignments have been specified. */ |
| 5098 | || (isym->st_value == 1 && old_alignment == 0)) |
| 5099 | h->root.u.c.p->alignment_power = align; |
| 5100 | else |
| 5101 | h->root.u.c.p->alignment_power = old_alignment; |
| 5102 | } |
| 5103 | |
| 5104 | if (is_elf_hash_table (htab)) |
| 5105 | { |
| 5106 | /* Check the alignment when a common symbol is involved. This |
| 5107 | can change when a common symbol is overridden by a normal |
| 5108 | definition or a common symbol is ignored due to the old |
| 5109 | normal definition. We need to make sure the maximum |
| 5110 | alignment is maintained. */ |
| 5111 | if ((old_alignment || common) |
| 5112 | && h->root.type != bfd_link_hash_common) |
| 5113 | { |
| 5114 | unsigned int common_align; |
| 5115 | unsigned int normal_align; |
| 5116 | unsigned int symbol_align; |
| 5117 | bfd *normal_bfd; |
| 5118 | bfd *common_bfd; |
| 5119 | |
| 5120 | symbol_align = ffs (h->root.u.def.value) - 1; |
| 5121 | if (h->root.u.def.section->owner != NULL |
| 5122 | && (h->root.u.def.section->owner->flags & DYNAMIC) == 0) |
| 5123 | { |
| 5124 | normal_align = h->root.u.def.section->alignment_power; |
| 5125 | if (normal_align > symbol_align) |
| 5126 | normal_align = symbol_align; |
| 5127 | } |
| 5128 | else |
| 5129 | normal_align = symbol_align; |
| 5130 | |
| 5131 | if (old_alignment) |
| 5132 | { |
| 5133 | common_align = old_alignment; |
| 5134 | common_bfd = old_bfd; |
| 5135 | normal_bfd = abfd; |
| 5136 | } |
| 5137 | else |
| 5138 | { |
| 5139 | common_align = bfd_log2 (isym->st_value); |
| 5140 | common_bfd = abfd; |
| 5141 | normal_bfd = old_bfd; |
| 5142 | } |
| 5143 | |
| 5144 | if (normal_align < common_align) |
| 5145 | { |
| 5146 | /* PR binutils/2735 */ |
| 5147 | if (normal_bfd == NULL) |
| 5148 | _bfd_error_handler |
| 5149 | /* xgettext:c-format */ |
| 5150 | (_("warning: alignment %u of common symbol `%s' in %pB" |
| 5151 | " is greater than the alignment (%u) of its section %pA"), |
| 5152 | 1 << common_align, name, common_bfd, |
| 5153 | 1 << normal_align, h->root.u.def.section); |
| 5154 | else |
| 5155 | _bfd_error_handler |
| 5156 | /* xgettext:c-format */ |
| 5157 | (_("warning: alignment %u of symbol `%s' in %pB" |
| 5158 | " is smaller than %u in %pB"), |
| 5159 | 1 << normal_align, name, normal_bfd, |
| 5160 | 1 << common_align, common_bfd); |
| 5161 | } |
| 5162 | } |
| 5163 | |
| 5164 | /* Remember the symbol size if it isn't undefined. */ |
| 5165 | if ((isym->st_size != 0 && isym->st_shndx != SHN_UNDEF) |
| 5166 | && (definition || h->size == 0)) |
| 5167 | { |
| 5168 | if (h->size != 0 |
| 5169 | && h->size != isym->st_size |
| 5170 | && ! size_change_ok) |
| 5171 | _bfd_error_handler |
| 5172 | /* xgettext:c-format */ |
| 5173 | (_("warning: size of symbol `%s' changed" |
| 5174 | " from %" PRIu64 " in %pB to %" PRIu64 " in %pB"), |
| 5175 | name, (uint64_t) h->size, old_bfd, |
| 5176 | (uint64_t) isym->st_size, abfd); |
| 5177 | |
| 5178 | h->size = isym->st_size; |
| 5179 | } |
| 5180 | |
| 5181 | /* If this is a common symbol, then we always want H->SIZE |
| 5182 | to be the size of the common symbol. The code just above |
| 5183 | won't fix the size if a common symbol becomes larger. We |
| 5184 | don't warn about a size change here, because that is |
| 5185 | covered by --warn-common. Allow changed between different |
| 5186 | function types. */ |
| 5187 | if (h->root.type == bfd_link_hash_common) |
| 5188 | h->size = h->root.u.c.size; |
| 5189 | |
| 5190 | if (ELF_ST_TYPE (isym->st_info) != STT_NOTYPE |
| 5191 | && (definition || h->type == STT_NOTYPE)) |
| 5192 | { |
| 5193 | unsigned int type = ELF_ST_TYPE (isym->st_info); |
| 5194 | |
| 5195 | if (h->type != type) |
| 5196 | { |
| 5197 | if (h->type != STT_NOTYPE && ! type_change_ok) |
| 5198 | _bfd_error_handler |
| 5199 | /* xgettext:c-format */ |
| 5200 | (_("warning: type of symbol `%s' changed" |
| 5201 | " from %d to %d in %pB"), |
| 5202 | name, h->type, type, abfd); |
| 5203 | |
| 5204 | h->type = type; |
| 5205 | } |
| 5206 | } |
| 5207 | |
| 5208 | /* Set a flag in the hash table entry indicating the type of |
| 5209 | reference or definition we just found. Keep a count of |
| 5210 | the number of dynamic symbols we find. A dynamic symbol |
| 5211 | is one which is referenced or defined by both a regular |
| 5212 | object and a shared object. */ |
| 5213 | if (! dynamic) |
| 5214 | { |
| 5215 | if (! definition) |
| 5216 | { |
| 5217 | h->ref_regular = 1; |
| 5218 | if (bind != STB_WEAK) |
| 5219 | h->ref_regular_nonweak = 1; |
| 5220 | } |
| 5221 | else |
| 5222 | { |
| 5223 | BFD_ASSERT (!h->def_dynamic); |
| 5224 | h->def_regular = 1; |
| 5225 | } |
| 5226 | } |
| 5227 | else |
| 5228 | { |
| 5229 | BFD_ASSERT (definition); |
| 5230 | h->def_dynamic = 1; |
| 5231 | h->dynindx = -2; |
| 5232 | ((struct elf64_ia64_link_hash_entry *)h)->shl = abfd; |
| 5233 | } |
| 5234 | } |
| 5235 | } |
| 5236 | |
| 5237 | free (isymbuf); |
| 5238 | isymbuf = NULL; |
| 5239 | |
| 5240 | /* If this object is the same format as the output object, and it is |
| 5241 | not a shared library, then let the backend look through the |
| 5242 | relocs. |
| 5243 | |
| 5244 | This is required to build global offset table entries and to |
| 5245 | arrange for dynamic relocs. It is not required for the |
| 5246 | particular common case of linking non PIC code, even when linking |
| 5247 | against shared libraries, but unfortunately there is no way of |
| 5248 | knowing whether an object file has been compiled PIC or not. |
| 5249 | Looking through the relocs is not particularly time consuming. |
| 5250 | The problem is that we must either (1) keep the relocs in memory, |
| 5251 | which causes the linker to require additional runtime memory or |
| 5252 | (2) read the relocs twice from the input file, which wastes time. |
| 5253 | This would be a good case for using mmap. |
| 5254 | |
| 5255 | I have no idea how to handle linking PIC code into a file of a |
| 5256 | different format. It probably can't be done. */ |
| 5257 | if (! dynamic |
| 5258 | && is_elf_hash_table (htab) |
| 5259 | && bed->check_relocs != NULL |
| 5260 | && (*bed->relocs_compatible) (abfd->xvec, info->output_bfd->xvec)) |
| 5261 | { |
| 5262 | asection *o; |
| 5263 | |
| 5264 | for (o = abfd->sections; o != NULL; o = o->next) |
| 5265 | { |
| 5266 | Elf_Internal_Rela *internal_relocs; |
| 5267 | bfd_boolean ok; |
| 5268 | |
| 5269 | if ((o->flags & SEC_RELOC) == 0 |
| 5270 | || o->reloc_count == 0 |
| 5271 | || ((info->strip == strip_all || info->strip == strip_debugger) |
| 5272 | && (o->flags & SEC_DEBUGGING) != 0) |
| 5273 | || bfd_is_abs_section (o->output_section)) |
| 5274 | continue; |
| 5275 | |
| 5276 | internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
| 5277 | info->keep_memory); |
| 5278 | if (internal_relocs == NULL) |
| 5279 | goto error_return; |
| 5280 | |
| 5281 | ok = (*bed->check_relocs) (abfd, info, o, internal_relocs); |
| 5282 | |
| 5283 | if (elf_section_data (o)->relocs != internal_relocs) |
| 5284 | free (internal_relocs); |
| 5285 | |
| 5286 | if (! ok) |
| 5287 | goto error_return; |
| 5288 | } |
| 5289 | } |
| 5290 | |
| 5291 | return TRUE; |
| 5292 | |
| 5293 | error_free_vers: |
| 5294 | error_free_sym: |
| 5295 | free (isymbuf); |
| 5296 | error_return: |
| 5297 | return FALSE; |
| 5298 | } |
| 5299 | |
| 5300 | static bfd_boolean |
| 5301 | elf64_vms_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info) |
| 5302 | { |
| 5303 | int pass; |
| 5304 | struct bfd_link_hash_entry **pundef; |
| 5305 | struct bfd_link_hash_entry **next_pundef; |
| 5306 | |
| 5307 | /* We only accept VMS libraries. */ |
| 5308 | if (info->output_bfd->xvec != abfd->xvec) |
| 5309 | { |
| 5310 | bfd_set_error (bfd_error_wrong_format); |
| 5311 | return FALSE; |
| 5312 | } |
| 5313 | |
| 5314 | /* The archive_pass field in the archive itself is used to |
| 5315 | initialize PASS, since we may search the same archive multiple |
| 5316 | times. */ |
| 5317 | pass = ++abfd->archive_pass; |
| 5318 | |
| 5319 | /* Look through the list of undefined symbols. */ |
| 5320 | for (pundef = &info->hash->undefs; *pundef != NULL; pundef = next_pundef) |
| 5321 | { |
| 5322 | struct bfd_link_hash_entry *h; |
| 5323 | symindex symidx; |
| 5324 | bfd *element; |
| 5325 | bfd *orig_element; |
| 5326 | |
| 5327 | h = *pundef; |
| 5328 | next_pundef = &(*pundef)->u.undef.next; |
| 5329 | |
| 5330 | /* When a symbol is defined, it is not necessarily removed from |
| 5331 | the list. */ |
| 5332 | if (h->type != bfd_link_hash_undefined |
| 5333 | && h->type != bfd_link_hash_common) |
| 5334 | { |
| 5335 | /* Remove this entry from the list, for general cleanliness |
| 5336 | and because we are going to look through the list again |
| 5337 | if we search any more libraries. We can't remove the |
| 5338 | entry if it is the tail, because that would lose any |
| 5339 | entries we add to the list later on. */ |
| 5340 | if (*pundef != info->hash->undefs_tail) |
| 5341 | { |
| 5342 | *pundef = *next_pundef; |
| 5343 | next_pundef = pundef; |
| 5344 | } |
| 5345 | continue; |
| 5346 | } |
| 5347 | |
| 5348 | /* Look for this symbol in the archive hash table. */ |
| 5349 | symidx = _bfd_vms_lib_find_symbol (abfd, h->root.string); |
| 5350 | if (symidx == BFD_NO_MORE_SYMBOLS) |
| 5351 | { |
| 5352 | /* Nothing in this slot. */ |
| 5353 | continue; |
| 5354 | } |
| 5355 | |
| 5356 | element = bfd_get_elt_at_index (abfd, symidx); |
| 5357 | if (element == NULL) |
| 5358 | return FALSE; |
| 5359 | |
| 5360 | if (element->archive_pass == -1 || element->archive_pass == pass) |
| 5361 | { |
| 5362 | /* Next symbol if this archive is wrong or already handled. */ |
| 5363 | continue; |
| 5364 | } |
| 5365 | |
| 5366 | orig_element = element; |
| 5367 | if (bfd_is_thin_archive (abfd)) |
| 5368 | { |
| 5369 | element = _bfd_vms_lib_get_imagelib_file (element); |
| 5370 | if (element == NULL || !bfd_check_format (element, bfd_object)) |
| 5371 | { |
| 5372 | orig_element->archive_pass = -1; |
| 5373 | return FALSE; |
| 5374 | } |
| 5375 | } |
| 5376 | else if (! bfd_check_format (element, bfd_object)) |
| 5377 | { |
| 5378 | element->archive_pass = -1; |
| 5379 | return FALSE; |
| 5380 | } |
| 5381 | |
| 5382 | /* Unlike the generic linker, we know that this element provides |
| 5383 | a definition for an undefined symbol and we know that we want |
| 5384 | to include it. We don't need to check anything. */ |
| 5385 | if (! (*info->callbacks->add_archive_element) (info, element, |
| 5386 | h->root.string, &element)) |
| 5387 | continue; |
| 5388 | if (! elf64_vms_link_add_object_symbols (element, info)) |
| 5389 | return FALSE; |
| 5390 | |
| 5391 | orig_element->archive_pass = pass; |
| 5392 | } |
| 5393 | |
| 5394 | return TRUE; |
| 5395 | } |
| 5396 | |
| 5397 | static bfd_boolean |
| 5398 | elf64_vms_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
| 5399 | { |
| 5400 | switch (bfd_get_format (abfd)) |
| 5401 | { |
| 5402 | case bfd_object: |
| 5403 | return elf64_vms_link_add_object_symbols (abfd, info); |
| 5404 | break; |
| 5405 | case bfd_archive: |
| 5406 | return elf64_vms_link_add_archive_symbols (abfd, info); |
| 5407 | break; |
| 5408 | default: |
| 5409 | bfd_set_error (bfd_error_wrong_format); |
| 5410 | return FALSE; |
| 5411 | } |
| 5412 | } |
| 5413 | |
| 5414 | static bfd_boolean |
| 5415 | elf64_ia64_vms_mkobject (bfd *abfd) |
| 5416 | { |
| 5417 | return bfd_elf_allocate_object |
| 5418 | (abfd, sizeof (struct elf64_ia64_vms_obj_tdata), IA64_ELF_DATA); |
| 5419 | } |
| 5420 | |
| 5421 | |
| 5422 | /* Size-dependent data and functions. */ |
| 5423 | static const struct elf_size_info elf64_ia64_vms_size_info = { |
| 5424 | sizeof (Elf64_External_VMS_Ehdr), |
| 5425 | sizeof (Elf64_External_Phdr), |
| 5426 | sizeof (Elf64_External_Shdr), |
| 5427 | sizeof (Elf64_External_Rel), |
| 5428 | sizeof (Elf64_External_Rela), |
| 5429 | sizeof (Elf64_External_Sym), |
| 5430 | sizeof (Elf64_External_Dyn), |
| 5431 | sizeof (Elf_External_Note), |
| 5432 | 4, |
| 5433 | 1, |
| 5434 | 64, 3, /* ARCH_SIZE, LOG_FILE_ALIGN */ |
| 5435 | ELFCLASS64, EV_CURRENT, |
| 5436 | bfd_elf64_write_out_phdrs, |
| 5437 | elf64_vms_write_shdrs_and_ehdr, |
| 5438 | bfd_elf64_checksum_contents, |
| 5439 | bfd_elf64_write_relocs, |
| 5440 | bfd_elf64_swap_symbol_in, |
| 5441 | bfd_elf64_swap_symbol_out, |
| 5442 | bfd_elf64_slurp_reloc_table, |
| 5443 | bfd_elf64_slurp_symbol_table, |
| 5444 | bfd_elf64_swap_dyn_in, |
| 5445 | bfd_elf64_swap_dyn_out, |
| 5446 | bfd_elf64_swap_reloc_in, |
| 5447 | bfd_elf64_swap_reloc_out, |
| 5448 | bfd_elf64_swap_reloca_in, |
| 5449 | bfd_elf64_swap_reloca_out |
| 5450 | }; |
| 5451 | |
| 5452 | #define ELF_ARCH bfd_arch_ia64 |
| 5453 | #define ELF_MACHINE_CODE EM_IA_64 |
| 5454 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ |
| 5455 | #define ELF_COMMONPAGESIZE 0x200 /* 16KB */ |
| 5456 | |
| 5457 | #define elf_backend_section_from_shdr \ |
| 5458 | elf64_ia64_section_from_shdr |
| 5459 | #define elf_backend_section_flags \ |
| 5460 | elf64_ia64_section_flags |
| 5461 | #define elf_backend_fake_sections \ |
| 5462 | elf64_ia64_fake_sections |
| 5463 | #define elf_backend_final_write_processing \ |
| 5464 | elf64_ia64_final_write_processing |
| 5465 | #define elf_backend_add_symbol_hook \ |
| 5466 | elf64_ia64_add_symbol_hook |
| 5467 | #define elf_info_to_howto \ |
| 5468 | elf64_ia64_info_to_howto |
| 5469 | |
| 5470 | #define bfd_elf64_bfd_reloc_type_lookup \ |
| 5471 | ia64_elf_reloc_type_lookup |
| 5472 | #define bfd_elf64_bfd_reloc_name_lookup \ |
| 5473 | ia64_elf_reloc_name_lookup |
| 5474 | #define bfd_elf64_bfd_is_local_label_name \ |
| 5475 | elf64_ia64_is_local_label_name |
| 5476 | #define bfd_elf64_bfd_relax_section \ |
| 5477 | elf64_ia64_relax_section |
| 5478 | |
| 5479 | #define elf_backend_object_p \ |
| 5480 | elf64_ia64_object_p |
| 5481 | |
| 5482 | /* Stuff for the BFD linker: */ |
| 5483 | #define bfd_elf64_bfd_link_hash_table_create \ |
| 5484 | elf64_ia64_hash_table_create |
| 5485 | #define elf_backend_create_dynamic_sections \ |
| 5486 | elf64_ia64_create_dynamic_sections |
| 5487 | #define elf_backend_check_relocs \ |
| 5488 | elf64_ia64_check_relocs |
| 5489 | #define elf_backend_adjust_dynamic_symbol \ |
| 5490 | elf64_ia64_adjust_dynamic_symbol |
| 5491 | #define elf_backend_size_dynamic_sections \ |
| 5492 | elf64_ia64_size_dynamic_sections |
| 5493 | #define elf_backend_omit_section_dynsym \ |
| 5494 | _bfd_elf_omit_section_dynsym_all |
| 5495 | #define elf_backend_relocate_section \ |
| 5496 | elf64_ia64_relocate_section |
| 5497 | #define elf_backend_finish_dynamic_symbol \ |
| 5498 | elf64_ia64_finish_dynamic_symbol |
| 5499 | #define elf_backend_finish_dynamic_sections \ |
| 5500 | elf64_ia64_finish_dynamic_sections |
| 5501 | #define bfd_elf64_bfd_final_link \ |
| 5502 | elf64_ia64_final_link |
| 5503 | |
| 5504 | #define bfd_elf64_bfd_merge_private_bfd_data \ |
| 5505 | elf64_ia64_merge_private_bfd_data |
| 5506 | #define bfd_elf64_bfd_set_private_flags \ |
| 5507 | elf64_ia64_set_private_flags |
| 5508 | #define bfd_elf64_bfd_print_private_bfd_data \ |
| 5509 | elf64_ia64_print_private_bfd_data |
| 5510 | |
| 5511 | #define elf_backend_plt_readonly 1 |
| 5512 | #define elf_backend_want_plt_sym 0 |
| 5513 | #define elf_backend_plt_alignment 5 |
| 5514 | #define elf_backend_got_header_size 0 |
| 5515 | #define elf_backend_want_got_plt 1 |
| 5516 | #define elf_backend_may_use_rel_p 1 |
| 5517 | #define elf_backend_may_use_rela_p 1 |
| 5518 | #define elf_backend_default_use_rela_p 1 |
| 5519 | #define elf_backend_want_dynbss 0 |
| 5520 | #define elf_backend_hide_symbol elf64_ia64_hash_hide_symbol |
| 5521 | #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol |
| 5522 | #define elf_backend_reloc_type_class elf64_ia64_reloc_type_class |
| 5523 | #define elf_backend_rela_normal 1 |
| 5524 | #define elf_backend_special_sections elf64_ia64_special_sections |
| 5525 | #define elf_backend_default_execstack 0 |
| 5526 | |
| 5527 | /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with |
| 5528 | SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. |
| 5529 | We don't want to flood users with so many error messages. We turn |
| 5530 | off the warning for now. It will be turned on later when the Intel |
| 5531 | compiler is fixed. */ |
| 5532 | #define elf_backend_link_order_error_handler NULL |
| 5533 | |
| 5534 | /* VMS-specific vectors. */ |
| 5535 | |
| 5536 | #undef TARGET_LITTLE_SYM |
| 5537 | #define TARGET_LITTLE_SYM ia64_elf64_vms_vec |
| 5538 | #undef TARGET_LITTLE_NAME |
| 5539 | #define TARGET_LITTLE_NAME "elf64-ia64-vms" |
| 5540 | #undef TARGET_BIG_SYM |
| 5541 | #undef TARGET_BIG_NAME |
| 5542 | |
| 5543 | /* These are VMS specific functions. */ |
| 5544 | |
| 5545 | #undef elf_backend_object_p |
| 5546 | #define elf_backend_object_p elf64_vms_object_p |
| 5547 | |
| 5548 | #undef elf_backend_section_from_shdr |
| 5549 | #define elf_backend_section_from_shdr elf64_vms_section_from_shdr |
| 5550 | |
| 5551 | #undef elf_backend_init_file_header |
| 5552 | #define elf_backend_init_file_header elf64_vms_init_file_header |
| 5553 | |
| 5554 | #undef elf_backend_section_processing |
| 5555 | #define elf_backend_section_processing elf64_vms_section_processing |
| 5556 | |
| 5557 | #undef elf_backend_final_write_processing |
| 5558 | #define elf_backend_final_write_processing elf64_vms_final_write_processing |
| 5559 | |
| 5560 | #undef bfd_elf64_close_and_cleanup |
| 5561 | #define bfd_elf64_close_and_cleanup elf64_vms_close_and_cleanup |
| 5562 | |
| 5563 | #undef elf_backend_section_from_bfd_section |
| 5564 | |
| 5565 | #undef elf_backend_symbol_processing |
| 5566 | |
| 5567 | #undef elf_backend_want_p_paddr_set_to_zero |
| 5568 | |
| 5569 | #undef ELF_OSABI |
| 5570 | #define ELF_OSABI ELFOSABI_OPENVMS |
| 5571 | |
| 5572 | #undef ELF_MAXPAGESIZE |
| 5573 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ |
| 5574 | |
| 5575 | #undef elf64_bed |
| 5576 | #define elf64_bed elf64_ia64_vms_bed |
| 5577 | |
| 5578 | #define elf_backend_size_info elf64_ia64_vms_size_info |
| 5579 | |
| 5580 | /* Use VMS-style archives (in particular, don't use the standard coff |
| 5581 | archive format). */ |
| 5582 | #define bfd_elf64_archive_functions |
| 5583 | |
| 5584 | #undef bfd_elf64_archive_p |
| 5585 | #define bfd_elf64_archive_p _bfd_vms_lib_ia64_archive_p |
| 5586 | #undef bfd_elf64_write_archive_contents |
| 5587 | #define bfd_elf64_write_archive_contents _bfd_vms_lib_write_archive_contents |
| 5588 | #undef bfd_elf64_mkarchive |
| 5589 | #define bfd_elf64_mkarchive _bfd_vms_lib_ia64_mkarchive |
| 5590 | |
| 5591 | #define bfd_elf64_archive_slurp_armap \ |
| 5592 | _bfd_vms_lib_slurp_armap |
| 5593 | #define bfd_elf64_archive_slurp_extended_name_table \ |
| 5594 | _bfd_vms_lib_slurp_extended_name_table |
| 5595 | #define bfd_elf64_archive_construct_extended_name_table \ |
| 5596 | _bfd_vms_lib_construct_extended_name_table |
| 5597 | #define bfd_elf64_archive_truncate_arname \ |
| 5598 | _bfd_vms_lib_truncate_arname |
| 5599 | #define bfd_elf64_archive_write_armap \ |
| 5600 | _bfd_vms_lib_write_armap |
| 5601 | #define bfd_elf64_archive_read_ar_hdr \ |
| 5602 | _bfd_vms_lib_read_ar_hdr |
| 5603 | #define bfd_elf64_archive_write_ar_hdr \ |
| 5604 | _bfd_vms_lib_write_ar_hdr |
| 5605 | #define bfd_elf64_archive_openr_next_archived_file \ |
| 5606 | _bfd_vms_lib_openr_next_archived_file |
| 5607 | #define bfd_elf64_archive_get_elt_at_index \ |
| 5608 | _bfd_vms_lib_get_elt_at_index |
| 5609 | #define bfd_elf64_archive_generic_stat_arch_elt \ |
| 5610 | _bfd_vms_lib_generic_stat_arch_elt |
| 5611 | #define bfd_elf64_archive_update_armap_timestamp \ |
| 5612 | _bfd_vms_lib_update_armap_timestamp |
| 5613 | |
| 5614 | /* VMS link methods. */ |
| 5615 | #undef bfd_elf64_bfd_link_add_symbols |
| 5616 | #define bfd_elf64_bfd_link_add_symbols elf64_vms_bfd_link_add_symbols |
| 5617 | |
| 5618 | #undef elf_backend_want_got_sym |
| 5619 | #define elf_backend_want_got_sym 0 |
| 5620 | |
| 5621 | #undef bfd_elf64_mkobject |
| 5622 | #define bfd_elf64_mkobject elf64_ia64_vms_mkobject |
| 5623 | |
| 5624 | /* Redefine to align segments on block size. */ |
| 5625 | #undef ELF_MAXPAGESIZE |
| 5626 | #define ELF_MAXPAGESIZE 0x200 /* 512B */ |
| 5627 | |
| 5628 | #undef elf_backend_want_got_plt |
| 5629 | #define elf_backend_want_got_plt 0 |
| 5630 | |
| 5631 | #include "elf64-target.h" |