| 1 | /* IA-64 support for OpenVMS |
| 2 | Copyright (C) 1998-2016 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "bfd.h" |
| 23 | #include "libbfd.h" |
| 24 | #include "elf-bfd.h" |
| 25 | #include "opcode/ia64.h" |
| 26 | #include "elf/ia64.h" |
| 27 | #include "objalloc.h" |
| 28 | #include "hashtab.h" |
| 29 | #include "elfxx-ia64.h" |
| 30 | #include "vms.h" |
| 31 | #include "bfdver.h" |
| 32 | |
| 33 | /* THE RULES for all the stuff the linker creates -- |
| 34 | |
| 35 | GOT Entries created in response to LTOFF or LTOFF_FPTR |
| 36 | relocations. Dynamic relocs created for dynamic |
| 37 | symbols in an application; REL relocs for locals |
| 38 | in a shared library. |
| 39 | |
| 40 | FPTR The canonical function descriptor. Created for local |
| 41 | symbols in applications. Descriptors for dynamic symbols |
| 42 | and local symbols in shared libraries are created by |
| 43 | ld.so. Thus there are no dynamic relocs against these |
| 44 | objects. The FPTR relocs for such _are_ passed through |
| 45 | to the dynamic relocation tables. |
| 46 | |
| 47 | FULL_PLT Created for a PCREL21B relocation against a dynamic symbol. |
| 48 | Requires the creation of a PLTOFF entry. This does not |
| 49 | require any dynamic relocations. |
| 50 | |
| 51 | PLTOFF Created by PLTOFF relocations. For local symbols, this |
| 52 | is an alternate function descriptor, and in shared libraries |
| 53 | requires two REL relocations. Note that this cannot be |
| 54 | transformed into an FPTR relocation, since it must be in |
| 55 | range of the GP. For dynamic symbols, this is a function |
| 56 | descriptor. */ |
| 57 | |
| 58 | typedef struct bfd_hash_entry *(*new_hash_entry_func) |
| 59 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
| 60 | |
| 61 | /* In dynamically (linker-) created sections, we generally need to keep track |
| 62 | of the place a symbol or expression got allocated to. This is done via hash |
| 63 | tables that store entries of the following type. */ |
| 64 | |
| 65 | struct elf64_ia64_dyn_sym_info |
| 66 | { |
| 67 | /* The addend for which this entry is relevant. */ |
| 68 | bfd_vma addend; |
| 69 | |
| 70 | bfd_vma got_offset; |
| 71 | bfd_vma fptr_offset; |
| 72 | bfd_vma pltoff_offset; |
| 73 | bfd_vma plt_offset; |
| 74 | bfd_vma plt2_offset; |
| 75 | |
| 76 | /* The symbol table entry, if any, that this was derived from. */ |
| 77 | struct elf_link_hash_entry *h; |
| 78 | |
| 79 | /* Used to count non-got, non-plt relocations for delayed sizing |
| 80 | of relocation sections. */ |
| 81 | struct elf64_ia64_dyn_reloc_entry |
| 82 | { |
| 83 | struct elf64_ia64_dyn_reloc_entry *next; |
| 84 | asection *srel; |
| 85 | int type; |
| 86 | int count; |
| 87 | } *reloc_entries; |
| 88 | |
| 89 | /* TRUE when the section contents have been updated. */ |
| 90 | unsigned got_done : 1; |
| 91 | unsigned fptr_done : 1; |
| 92 | unsigned pltoff_done : 1; |
| 93 | |
| 94 | /* TRUE for the different kinds of linker data we want created. */ |
| 95 | unsigned want_got : 1; |
| 96 | unsigned want_gotx : 1; |
| 97 | unsigned want_fptr : 1; |
| 98 | unsigned want_ltoff_fptr : 1; |
| 99 | unsigned want_plt : 1; /* A MIN_PLT entry. */ |
| 100 | unsigned want_plt2 : 1; /* A FULL_PLT. */ |
| 101 | unsigned want_pltoff : 1; |
| 102 | }; |
| 103 | |
| 104 | struct elf64_ia64_local_hash_entry |
| 105 | { |
| 106 | int id; |
| 107 | unsigned int r_sym; |
| 108 | /* The number of elements in elf64_ia64_dyn_sym_info array. */ |
| 109 | unsigned int count; |
| 110 | /* The number of sorted elements in elf64_ia64_dyn_sym_info array. */ |
| 111 | unsigned int sorted_count; |
| 112 | /* The size of elf64_ia64_dyn_sym_info array. */ |
| 113 | unsigned int size; |
| 114 | /* The array of elf64_ia64_dyn_sym_info. */ |
| 115 | struct elf64_ia64_dyn_sym_info *info; |
| 116 | |
| 117 | /* TRUE if this hash entry's addends was translated for |
| 118 | SHF_MERGE optimization. */ |
| 119 | unsigned sec_merge_done : 1; |
| 120 | }; |
| 121 | |
| 122 | struct elf64_ia64_link_hash_entry |
| 123 | { |
| 124 | struct elf_link_hash_entry root; |
| 125 | |
| 126 | /* Set if this symbol is defined in a shared library. |
| 127 | We can't use root.u.def.section->owner as the symbol is an absolute |
| 128 | symbol. */ |
| 129 | bfd *shl; |
| 130 | |
| 131 | /* The number of elements in elf64_ia64_dyn_sym_info array. */ |
| 132 | unsigned int count; |
| 133 | /* The number of sorted elements in elf64_ia64_dyn_sym_info array. */ |
| 134 | unsigned int sorted_count; |
| 135 | /* The size of elf64_ia64_dyn_sym_info array. */ |
| 136 | unsigned int size; |
| 137 | /* The array of elf64_ia64_dyn_sym_info. */ |
| 138 | struct elf64_ia64_dyn_sym_info *info; |
| 139 | }; |
| 140 | |
| 141 | struct elf64_ia64_link_hash_table |
| 142 | { |
| 143 | /* The main hash table. */ |
| 144 | struct elf_link_hash_table root; |
| 145 | |
| 146 | asection *fptr_sec; /* Function descriptor table (or NULL). */ |
| 147 | asection *rel_fptr_sec; /* Dynamic relocation section for same. */ |
| 148 | asection *pltoff_sec; /* Private descriptors for plt (or NULL). */ |
| 149 | asection *fixups_sec; /* Fixups section. */ |
| 150 | asection *transfer_sec; /* Transfer vector section. */ |
| 151 | asection *note_sec; /* .note section. */ |
| 152 | |
| 153 | /* There are maybe R_IA64_GPREL22 relocations, including those |
| 154 | optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT |
| 155 | sections. We need to record those sections so that we can choose |
| 156 | a proper GP to cover all R_IA64_GPREL22 relocations. */ |
| 157 | asection *max_short_sec; /* Maximum short output section. */ |
| 158 | bfd_vma max_short_offset; /* Maximum short offset. */ |
| 159 | asection *min_short_sec; /* Minimum short output section. */ |
| 160 | bfd_vma min_short_offset; /* Minimum short offset. */ |
| 161 | |
| 162 | htab_t loc_hash_table; |
| 163 | void *loc_hash_memory; |
| 164 | }; |
| 165 | |
| 166 | struct elf64_ia64_allocate_data |
| 167 | { |
| 168 | struct bfd_link_info *info; |
| 169 | bfd_size_type ofs; |
| 170 | }; |
| 171 | |
| 172 | #define elf64_ia64_hash_table(p) \ |
| 173 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 174 | == IA64_ELF_DATA ? ((struct elf64_ia64_link_hash_table *) ((p)->hash)) : NULL) |
| 175 | |
| 176 | struct elf64_ia64_vms_obj_tdata |
| 177 | { |
| 178 | struct elf_obj_tdata root; |
| 179 | |
| 180 | /* Ident for shared library. */ |
| 181 | bfd_uint64_t ident; |
| 182 | |
| 183 | /* Used only during link: offset in the .fixups section for this bfd. */ |
| 184 | bfd_vma fixups_off; |
| 185 | |
| 186 | /* Max number of shared libraries. */ |
| 187 | unsigned int needed_count; |
| 188 | }; |
| 189 | |
| 190 | #define elf_ia64_vms_tdata(abfd) \ |
| 191 | ((struct elf64_ia64_vms_obj_tdata *)((abfd)->tdata.any)) |
| 192 | #define elf_ia64_vms_ident(abfd) (elf_ia64_vms_tdata(abfd)->ident) |
| 193 | |
| 194 | struct elf64_vms_transfer |
| 195 | { |
| 196 | unsigned char size[4]; |
| 197 | unsigned char spare[4]; |
| 198 | unsigned char tfradr1[8]; |
| 199 | unsigned char tfradr2[8]; |
| 200 | unsigned char tfradr3[8]; |
| 201 | unsigned char tfradr4[8]; |
| 202 | unsigned char tfradr5[8]; |
| 203 | |
| 204 | /* Local function descriptor for tfr3. */ |
| 205 | unsigned char tfr3_func[8]; |
| 206 | unsigned char tfr3_gp[8]; |
| 207 | }; |
| 208 | |
| 209 | typedef struct |
| 210 | { |
| 211 | Elf64_External_Ehdr ehdr; |
| 212 | unsigned char vms_needed_count[8]; |
| 213 | } Elf64_External_VMS_Ehdr; |
| 214 | |
| 215 | static struct elf64_ia64_dyn_sym_info * get_dyn_sym_info |
| 216 | (struct elf64_ia64_link_hash_table *, |
| 217 | struct elf_link_hash_entry *, |
| 218 | bfd *, const Elf_Internal_Rela *, bfd_boolean); |
| 219 | static bfd_boolean elf64_ia64_dynamic_symbol_p |
| 220 | (struct elf_link_hash_entry *); |
| 221 | static bfd_boolean elf64_ia64_choose_gp |
| 222 | (bfd *, struct bfd_link_info *, bfd_boolean); |
| 223 | static void elf64_ia64_dyn_sym_traverse |
| 224 | (struct elf64_ia64_link_hash_table *, |
| 225 | bfd_boolean (*) (struct elf64_ia64_dyn_sym_info *, void *), |
| 226 | void *); |
| 227 | static bfd_boolean allocate_global_data_got |
| 228 | (struct elf64_ia64_dyn_sym_info *, void *); |
| 229 | static bfd_boolean allocate_global_fptr_got |
| 230 | (struct elf64_ia64_dyn_sym_info *, void *); |
| 231 | static bfd_boolean allocate_local_got |
| 232 | (struct elf64_ia64_dyn_sym_info *, void *); |
| 233 | static bfd_boolean allocate_dynrel_entries |
| 234 | (struct elf64_ia64_dyn_sym_info *, void *); |
| 235 | static asection *get_pltoff |
| 236 | (bfd *, struct elf64_ia64_link_hash_table *); |
| 237 | static asection *get_got |
| 238 | (bfd *, struct elf64_ia64_link_hash_table *); |
| 239 | |
| 240 | |
| 241 | /* Given a ELF reloc, return the matching HOWTO structure. */ |
| 242 | |
| 243 | static void |
| 244 | elf64_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
| 245 | arelent *bfd_reloc, |
| 246 | Elf_Internal_Rela *elf_reloc) |
| 247 | { |
| 248 | bfd_reloc->howto |
| 249 | = ia64_elf_lookup_howto ((unsigned int) ELF64_R_TYPE (elf_reloc->r_info)); |
| 250 | } |
| 251 | |
| 252 | |
| 253 | #define PLT_FULL_ENTRY_SIZE (2 * 16) |
| 254 | |
| 255 | static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = |
| 256 | { |
| 257 | 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ |
| 258 | 0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/ |
| 259 | 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ |
| 260 | 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ |
| 261 | 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ |
| 262 | 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ |
| 263 | }; |
| 264 | |
| 265 | static const bfd_byte oor_brl[16] = |
| 266 | { |
| 267 | 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ |
| 268 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;;*/ |
| 269 | 0x00, 0x00, 0x00, 0xc0 |
| 270 | }; |
| 271 | |
| 272 | |
| 273 | /* These functions do relaxation for IA-64 ELF. */ |
| 274 | |
| 275 | /* Rename some of the generic section flags to better document how they |
| 276 | are used here. */ |
| 277 | #define skip_relax_pass_0 sec_flg0 |
| 278 | #define skip_relax_pass_1 sec_flg1 |
| 279 | |
| 280 | static void |
| 281 | elf64_ia64_update_short_info (asection *sec, bfd_vma offset, |
| 282 | struct elf64_ia64_link_hash_table *ia64_info) |
| 283 | { |
| 284 | /* Skip ABS and SHF_IA_64_SHORT sections. */ |
| 285 | if (sec == bfd_abs_section_ptr |
| 286 | || (sec->flags & SEC_SMALL_DATA) != 0) |
| 287 | return; |
| 288 | |
| 289 | if (!ia64_info->min_short_sec) |
| 290 | { |
| 291 | ia64_info->max_short_sec = sec; |
| 292 | ia64_info->max_short_offset = offset; |
| 293 | ia64_info->min_short_sec = sec; |
| 294 | ia64_info->min_short_offset = offset; |
| 295 | } |
| 296 | else if (sec == ia64_info->max_short_sec |
| 297 | && offset > ia64_info->max_short_offset) |
| 298 | ia64_info->max_short_offset = offset; |
| 299 | else if (sec == ia64_info->min_short_sec |
| 300 | && offset < ia64_info->min_short_offset) |
| 301 | ia64_info->min_short_offset = offset; |
| 302 | else if (sec->output_section->vma |
| 303 | > ia64_info->max_short_sec->vma) |
| 304 | { |
| 305 | ia64_info->max_short_sec = sec; |
| 306 | ia64_info->max_short_offset = offset; |
| 307 | } |
| 308 | else if (sec->output_section->vma |
| 309 | < ia64_info->min_short_sec->vma) |
| 310 | { |
| 311 | ia64_info->min_short_sec = sec; |
| 312 | ia64_info->min_short_offset = offset; |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | /* Use a two passes algorithm. In the first pass, branches are relaxed |
| 317 | (which may increase the size of the section). In the second pass, |
| 318 | the other relaxations are done. |
| 319 | */ |
| 320 | |
| 321 | static bfd_boolean |
| 322 | elf64_ia64_relax_section (bfd *abfd, asection *sec, |
| 323 | struct bfd_link_info *link_info, |
| 324 | bfd_boolean *again) |
| 325 | { |
| 326 | struct one_fixup |
| 327 | { |
| 328 | struct one_fixup *next; |
| 329 | asection *tsec; |
| 330 | bfd_vma toff; |
| 331 | bfd_vma trampoff; |
| 332 | }; |
| 333 | |
| 334 | Elf_Internal_Shdr *symtab_hdr; |
| 335 | Elf_Internal_Rela *internal_relocs; |
| 336 | Elf_Internal_Rela *irel, *irelend; |
| 337 | bfd_byte *contents; |
| 338 | Elf_Internal_Sym *isymbuf = NULL; |
| 339 | struct elf64_ia64_link_hash_table *ia64_info; |
| 340 | struct one_fixup *fixups = NULL; |
| 341 | bfd_boolean changed_contents = FALSE; |
| 342 | bfd_boolean changed_relocs = FALSE; |
| 343 | bfd_boolean skip_relax_pass_0 = TRUE; |
| 344 | bfd_boolean skip_relax_pass_1 = TRUE; |
| 345 | bfd_vma gp = 0; |
| 346 | |
| 347 | /* Assume we're not going to change any sizes, and we'll only need |
| 348 | one pass. */ |
| 349 | *again = FALSE; |
| 350 | |
| 351 | if (bfd_link_relocatable (link_info)) |
| 352 | (*link_info->callbacks->einfo) |
| 353 | (_("%P%F: --relax and -r may not be used together\n")); |
| 354 | |
| 355 | /* Don't even try to relax for non-ELF outputs. */ |
| 356 | if (!is_elf_hash_table (link_info->hash)) |
| 357 | return FALSE; |
| 358 | |
| 359 | /* Nothing to do if there are no relocations or there is no need for |
| 360 | the current pass. */ |
| 361 | if ((sec->flags & SEC_RELOC) == 0 |
| 362 | || sec->reloc_count == 0 |
| 363 | || (link_info->relax_pass == 0 && sec->skip_relax_pass_0) |
| 364 | || (link_info->relax_pass == 1 && sec->skip_relax_pass_1)) |
| 365 | return TRUE; |
| 366 | |
| 367 | ia64_info = elf64_ia64_hash_table (link_info); |
| 368 | if (ia64_info == NULL) |
| 369 | return FALSE; |
| 370 | |
| 371 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 372 | |
| 373 | /* Load the relocations for this section. */ |
| 374 | internal_relocs = (_bfd_elf_link_read_relocs |
| 375 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
| 376 | link_info->keep_memory)); |
| 377 | if (internal_relocs == NULL) |
| 378 | return FALSE; |
| 379 | |
| 380 | irelend = internal_relocs + sec->reloc_count; |
| 381 | |
| 382 | /* Get the section contents. */ |
| 383 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 384 | contents = elf_section_data (sec)->this_hdr.contents; |
| 385 | else |
| 386 | { |
| 387 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
| 388 | goto error_return; |
| 389 | } |
| 390 | |
| 391 | for (irel = internal_relocs; irel < irelend; irel++) |
| 392 | { |
| 393 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); |
| 394 | bfd_vma symaddr, reladdr, trampoff, toff, roff; |
| 395 | asection *tsec; |
| 396 | struct one_fixup *f; |
| 397 | bfd_size_type amt; |
| 398 | bfd_boolean is_branch; |
| 399 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 400 | |
| 401 | switch (r_type) |
| 402 | { |
| 403 | case R_IA64_PCREL21B: |
| 404 | case R_IA64_PCREL21BI: |
| 405 | case R_IA64_PCREL21M: |
| 406 | case R_IA64_PCREL21F: |
| 407 | /* In pass 1, all br relaxations are done. We can skip it. */ |
| 408 | if (link_info->relax_pass == 1) |
| 409 | continue; |
| 410 | skip_relax_pass_0 = FALSE; |
| 411 | is_branch = TRUE; |
| 412 | break; |
| 413 | |
| 414 | case R_IA64_PCREL60B: |
| 415 | /* We can't optimize brl to br in pass 0 since br relaxations |
| 416 | will increase the code size. Defer it to pass 1. */ |
| 417 | if (link_info->relax_pass == 0) |
| 418 | { |
| 419 | skip_relax_pass_1 = FALSE; |
| 420 | continue; |
| 421 | } |
| 422 | is_branch = TRUE; |
| 423 | break; |
| 424 | |
| 425 | case R_IA64_GPREL22: |
| 426 | /* Update max_short_sec/min_short_sec. */ |
| 427 | |
| 428 | case R_IA64_LTOFF22X: |
| 429 | case R_IA64_LDXMOV: |
| 430 | /* We can't relax ldx/mov in pass 0 since br relaxations will |
| 431 | increase the code size. Defer it to pass 1. */ |
| 432 | if (link_info->relax_pass == 0) |
| 433 | { |
| 434 | skip_relax_pass_1 = FALSE; |
| 435 | continue; |
| 436 | } |
| 437 | is_branch = FALSE; |
| 438 | break; |
| 439 | |
| 440 | default: |
| 441 | continue; |
| 442 | } |
| 443 | |
| 444 | /* Get the value of the symbol referred to by the reloc. */ |
| 445 | if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 446 | { |
| 447 | /* A local symbol. */ |
| 448 | Elf_Internal_Sym *isym; |
| 449 | |
| 450 | /* Read this BFD's local symbols. */ |
| 451 | if (isymbuf == NULL) |
| 452 | { |
| 453 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
| 454 | if (isymbuf == NULL) |
| 455 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
| 456 | symtab_hdr->sh_info, 0, |
| 457 | NULL, NULL, NULL); |
| 458 | if (isymbuf == 0) |
| 459 | goto error_return; |
| 460 | } |
| 461 | |
| 462 | isym = isymbuf + ELF64_R_SYM (irel->r_info); |
| 463 | if (isym->st_shndx == SHN_UNDEF) |
| 464 | continue; /* We can't do anything with undefined symbols. */ |
| 465 | else if (isym->st_shndx == SHN_ABS) |
| 466 | tsec = bfd_abs_section_ptr; |
| 467 | else if (isym->st_shndx == SHN_COMMON) |
| 468 | tsec = bfd_com_section_ptr; |
| 469 | else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON) |
| 470 | tsec = bfd_com_section_ptr; |
| 471 | else |
| 472 | tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 473 | |
| 474 | toff = isym->st_value; |
| 475 | dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE); |
| 476 | } |
| 477 | else |
| 478 | { |
| 479 | unsigned long indx; |
| 480 | struct elf_link_hash_entry *h; |
| 481 | |
| 482 | indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 483 | h = elf_sym_hashes (abfd)[indx]; |
| 484 | BFD_ASSERT (h != NULL); |
| 485 | |
| 486 | while (h->root.type == bfd_link_hash_indirect |
| 487 | || h->root.type == bfd_link_hash_warning) |
| 488 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 489 | |
| 490 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE); |
| 491 | |
| 492 | /* For branches to dynamic symbols, we're interested instead |
| 493 | in a branch to the PLT entry. */ |
| 494 | if (is_branch && dyn_i && dyn_i->want_plt2) |
| 495 | { |
| 496 | /* Internal branches shouldn't be sent to the PLT. |
| 497 | Leave this for now and we'll give an error later. */ |
| 498 | if (r_type != R_IA64_PCREL21B) |
| 499 | continue; |
| 500 | |
| 501 | tsec = ia64_info->root.splt; |
| 502 | toff = dyn_i->plt2_offset; |
| 503 | BFD_ASSERT (irel->r_addend == 0); |
| 504 | } |
| 505 | |
| 506 | /* Can't do anything else with dynamic symbols. */ |
| 507 | else if (elf64_ia64_dynamic_symbol_p (h)) |
| 508 | continue; |
| 509 | |
| 510 | else |
| 511 | { |
| 512 | /* We can't do anything with undefined symbols. */ |
| 513 | if (h->root.type == bfd_link_hash_undefined |
| 514 | || h->root.type == bfd_link_hash_undefweak) |
| 515 | continue; |
| 516 | |
| 517 | tsec = h->root.u.def.section; |
| 518 | toff = h->root.u.def.value; |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | toff += irel->r_addend; |
| 523 | |
| 524 | symaddr = tsec->output_section->vma + tsec->output_offset + toff; |
| 525 | |
| 526 | roff = irel->r_offset; |
| 527 | |
| 528 | if (is_branch) |
| 529 | { |
| 530 | bfd_signed_vma offset; |
| 531 | |
| 532 | reladdr = (sec->output_section->vma |
| 533 | + sec->output_offset |
| 534 | + roff) & (bfd_vma) -4; |
| 535 | |
| 536 | /* The .plt section is aligned at 32byte and the .text section |
| 537 | is aligned at 64byte. The .text section is right after the |
| 538 | .plt section. After the first relaxation pass, linker may |
| 539 | increase the gap between the .plt and .text sections up |
| 540 | to 32byte. We assume linker will always insert 32byte |
| 541 | between the .plt and .text sections after the first |
| 542 | relaxation pass. */ |
| 543 | if (tsec == ia64_info->root.splt) |
| 544 | offset = -0x1000000 + 32; |
| 545 | else |
| 546 | offset = -0x1000000; |
| 547 | |
| 548 | /* If the branch is in range, no need to do anything. */ |
| 549 | if ((bfd_signed_vma) (symaddr - reladdr) >= offset |
| 550 | && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) |
| 551 | { |
| 552 | /* If the 60-bit branch is in 21-bit range, optimize it. */ |
| 553 | if (r_type == R_IA64_PCREL60B) |
| 554 | { |
| 555 | ia64_elf_relax_brl (contents, roff); |
| 556 | |
| 557 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 558 | R_IA64_PCREL21B); |
| 559 | |
| 560 | /* If the original relocation offset points to slot |
| 561 | 1, change it to slot 2. */ |
| 562 | if ((irel->r_offset & 3) == 1) |
| 563 | irel->r_offset += 1; |
| 564 | } |
| 565 | |
| 566 | continue; |
| 567 | } |
| 568 | else if (r_type == R_IA64_PCREL60B) |
| 569 | continue; |
| 570 | else if (ia64_elf_relax_br (contents, roff)) |
| 571 | { |
| 572 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 573 | R_IA64_PCREL60B); |
| 574 | |
| 575 | /* Make the relocation offset point to slot 1. */ |
| 576 | irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1; |
| 577 | continue; |
| 578 | } |
| 579 | |
| 580 | /* We can't put a trampoline in a .init/.fini section. Issue |
| 581 | an error. */ |
| 582 | if (strcmp (sec->output_section->name, ".init") == 0 |
| 583 | || strcmp (sec->output_section->name, ".fini") == 0) |
| 584 | { |
| 585 | _bfd_error_handler |
| 586 | (_("%B: Can't relax br at 0x%lx in section `%A'. Please use brl or indirect branch."), |
| 587 | sec->owner, sec, (unsigned long) roff); |
| 588 | bfd_set_error (bfd_error_bad_value); |
| 589 | goto error_return; |
| 590 | } |
| 591 | |
| 592 | /* If the branch and target are in the same section, you've |
| 593 | got one honking big section and we can't help you unless |
| 594 | you are branching backwards. You'll get an error message |
| 595 | later. */ |
| 596 | if (tsec == sec && toff > roff) |
| 597 | continue; |
| 598 | |
| 599 | /* Look for an existing fixup to this address. */ |
| 600 | for (f = fixups; f ; f = f->next) |
| 601 | if (f->tsec == tsec && f->toff == toff) |
| 602 | break; |
| 603 | |
| 604 | if (f == NULL) |
| 605 | { |
| 606 | /* Two alternatives: If it's a branch to a PLT entry, we can |
| 607 | make a copy of the FULL_PLT entry. Otherwise, we'll have |
| 608 | to use a `brl' insn to get where we're going. */ |
| 609 | |
| 610 | size_t size; |
| 611 | |
| 612 | if (tsec == ia64_info->root.splt) |
| 613 | size = sizeof (plt_full_entry); |
| 614 | else |
| 615 | size = sizeof (oor_brl); |
| 616 | |
| 617 | /* Resize the current section to make room for the new branch. */ |
| 618 | trampoff = (sec->size + 15) & (bfd_vma) -16; |
| 619 | |
| 620 | /* If trampoline is out of range, there is nothing we |
| 621 | can do. */ |
| 622 | offset = trampoff - (roff & (bfd_vma) -4); |
| 623 | if (offset < -0x1000000 || offset > 0x0FFFFF0) |
| 624 | continue; |
| 625 | |
| 626 | amt = trampoff + size; |
| 627 | contents = (bfd_byte *) bfd_realloc (contents, amt); |
| 628 | if (contents == NULL) |
| 629 | goto error_return; |
| 630 | sec->size = amt; |
| 631 | |
| 632 | if (tsec == ia64_info->root.splt) |
| 633 | { |
| 634 | memcpy (contents + trampoff, plt_full_entry, size); |
| 635 | |
| 636 | /* Hijack the old relocation for use as the PLTOFF reloc. */ |
| 637 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 638 | R_IA64_PLTOFF22); |
| 639 | irel->r_offset = trampoff; |
| 640 | } |
| 641 | else |
| 642 | { |
| 643 | memcpy (contents + trampoff, oor_brl, size); |
| 644 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 645 | R_IA64_PCREL60B); |
| 646 | irel->r_offset = trampoff + 2; |
| 647 | } |
| 648 | |
| 649 | /* Record the fixup so we don't do it again this section. */ |
| 650 | f = (struct one_fixup *) |
| 651 | bfd_malloc ((bfd_size_type) sizeof (*f)); |
| 652 | f->next = fixups; |
| 653 | f->tsec = tsec; |
| 654 | f->toff = toff; |
| 655 | f->trampoff = trampoff; |
| 656 | fixups = f; |
| 657 | } |
| 658 | else |
| 659 | { |
| 660 | /* If trampoline is out of range, there is nothing we |
| 661 | can do. */ |
| 662 | offset = f->trampoff - (roff & (bfd_vma) -4); |
| 663 | if (offset < -0x1000000 || offset > 0x0FFFFF0) |
| 664 | continue; |
| 665 | |
| 666 | /* Nop out the reloc, since we're finalizing things here. */ |
| 667 | irel->r_info = ELF64_R_INFO (0, R_IA64_NONE); |
| 668 | } |
| 669 | |
| 670 | /* Fix up the existing branch to hit the trampoline. */ |
| 671 | if (ia64_elf_install_value (contents + roff, offset, r_type) |
| 672 | != bfd_reloc_ok) |
| 673 | goto error_return; |
| 674 | |
| 675 | changed_contents = TRUE; |
| 676 | changed_relocs = TRUE; |
| 677 | } |
| 678 | else |
| 679 | { |
| 680 | /* Fetch the gp. */ |
| 681 | if (gp == 0) |
| 682 | { |
| 683 | bfd *obfd = sec->output_section->owner; |
| 684 | gp = _bfd_get_gp_value (obfd); |
| 685 | if (gp == 0) |
| 686 | { |
| 687 | if (!elf64_ia64_choose_gp (obfd, link_info, FALSE)) |
| 688 | goto error_return; |
| 689 | gp = _bfd_get_gp_value (obfd); |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | /* If the data is out of range, do nothing. */ |
| 694 | if ((bfd_signed_vma) (symaddr - gp) >= 0x200000 |
| 695 | ||(bfd_signed_vma) (symaddr - gp) < -0x200000) |
| 696 | continue; |
| 697 | |
| 698 | if (r_type == R_IA64_GPREL22) |
| 699 | elf64_ia64_update_short_info (tsec->output_section, |
| 700 | tsec->output_offset + toff, |
| 701 | ia64_info); |
| 702 | else if (r_type == R_IA64_LTOFF22X) |
| 703 | { |
| 704 | /* Can't deal yet correctly with ABS symbols. */ |
| 705 | if (bfd_is_abs_section (tsec)) |
| 706 | continue; |
| 707 | |
| 708 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 709 | R_IA64_GPREL22); |
| 710 | changed_relocs = TRUE; |
| 711 | |
| 712 | elf64_ia64_update_short_info (tsec->output_section, |
| 713 | tsec->output_offset + toff, |
| 714 | ia64_info); |
| 715 | } |
| 716 | else |
| 717 | { |
| 718 | ia64_elf_relax_ldxmov (contents, roff); |
| 719 | irel->r_info = ELF64_R_INFO (0, R_IA64_NONE); |
| 720 | changed_contents = TRUE; |
| 721 | changed_relocs = TRUE; |
| 722 | } |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | /* ??? If we created fixups, this may push the code segment large |
| 727 | enough that the data segment moves, which will change the GP. |
| 728 | Reset the GP so that we re-calculate next round. We need to |
| 729 | do this at the _beginning_ of the next round; now will not do. */ |
| 730 | |
| 731 | /* Clean up and go home. */ |
| 732 | while (fixups) |
| 733 | { |
| 734 | struct one_fixup *f = fixups; |
| 735 | fixups = fixups->next; |
| 736 | free (f); |
| 737 | } |
| 738 | |
| 739 | if (isymbuf != NULL |
| 740 | && symtab_hdr->contents != (unsigned char *) isymbuf) |
| 741 | { |
| 742 | if (! link_info->keep_memory) |
| 743 | free (isymbuf); |
| 744 | else |
| 745 | { |
| 746 | /* Cache the symbols for elf_link_input_bfd. */ |
| 747 | symtab_hdr->contents = (unsigned char *) isymbuf; |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | if (contents != NULL |
| 752 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 753 | { |
| 754 | if (!changed_contents && !link_info->keep_memory) |
| 755 | free (contents); |
| 756 | else |
| 757 | { |
| 758 | /* Cache the section contents for elf_link_input_bfd. */ |
| 759 | elf_section_data (sec)->this_hdr.contents = contents; |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | if (elf_section_data (sec)->relocs != internal_relocs) |
| 764 | { |
| 765 | if (!changed_relocs) |
| 766 | free (internal_relocs); |
| 767 | else |
| 768 | elf_section_data (sec)->relocs = internal_relocs; |
| 769 | } |
| 770 | |
| 771 | if (link_info->relax_pass == 0) |
| 772 | { |
| 773 | /* Pass 0 is only needed to relax br. */ |
| 774 | sec->skip_relax_pass_0 = skip_relax_pass_0; |
| 775 | sec->skip_relax_pass_1 = skip_relax_pass_1; |
| 776 | } |
| 777 | |
| 778 | *again = changed_contents || changed_relocs; |
| 779 | return TRUE; |
| 780 | |
| 781 | error_return: |
| 782 | if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) |
| 783 | free (isymbuf); |
| 784 | if (contents != NULL |
| 785 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 786 | free (contents); |
| 787 | if (internal_relocs != NULL |
| 788 | && elf_section_data (sec)->relocs != internal_relocs) |
| 789 | free (internal_relocs); |
| 790 | return FALSE; |
| 791 | } |
| 792 | #undef skip_relax_pass_0 |
| 793 | #undef skip_relax_pass_1 |
| 794 | |
| 795 | /* Return TRUE if NAME is an unwind table section name. */ |
| 796 | |
| 797 | static inline bfd_boolean |
| 798 | is_unwind_section_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) |
| 799 | { |
| 800 | return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind) |
| 801 | && ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info)) |
| 802 | || CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once)); |
| 803 | } |
| 804 | |
| 805 | |
| 806 | /* Convert IA-64 specific section flags to bfd internal section flags. */ |
| 807 | |
| 808 | /* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV |
| 809 | flag. */ |
| 810 | |
| 811 | static bfd_boolean |
| 812 | elf64_ia64_section_flags (flagword *flags, |
| 813 | const Elf_Internal_Shdr *hdr) |
| 814 | { |
| 815 | if (hdr->sh_flags & SHF_IA_64_SHORT) |
| 816 | *flags |= SEC_SMALL_DATA; |
| 817 | |
| 818 | return TRUE; |
| 819 | } |
| 820 | |
| 821 | /* Set the correct type for an IA-64 ELF section. We do this by the |
| 822 | section name, which is a hack, but ought to work. */ |
| 823 | |
| 824 | static bfd_boolean |
| 825 | elf64_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr, |
| 826 | asection *sec) |
| 827 | { |
| 828 | const char *name; |
| 829 | |
| 830 | name = bfd_get_section_name (abfd, sec); |
| 831 | |
| 832 | if (is_unwind_section_name (abfd, name)) |
| 833 | { |
| 834 | /* We don't have the sections numbered at this point, so sh_info |
| 835 | is set later, in elf64_ia64_final_write_processing. */ |
| 836 | hdr->sh_type = SHT_IA_64_UNWIND; |
| 837 | hdr->sh_flags |= SHF_LINK_ORDER; |
| 838 | } |
| 839 | else if (strcmp (name, ELF_STRING_ia64_archext) == 0) |
| 840 | hdr->sh_type = SHT_IA_64_EXT; |
| 841 | |
| 842 | if (sec->flags & SEC_SMALL_DATA) |
| 843 | hdr->sh_flags |= SHF_IA_64_SHORT; |
| 844 | |
| 845 | return TRUE; |
| 846 | } |
| 847 | |
| 848 | /* Hook called by the linker routine which adds symbols from an object |
| 849 | file. We use it to put .comm items in .sbss, and not .bss. */ |
| 850 | |
| 851 | static bfd_boolean |
| 852 | elf64_ia64_add_symbol_hook (bfd *abfd, |
| 853 | struct bfd_link_info *info, |
| 854 | Elf_Internal_Sym *sym, |
| 855 | const char **namep ATTRIBUTE_UNUSED, |
| 856 | flagword *flagsp ATTRIBUTE_UNUSED, |
| 857 | asection **secp, |
| 858 | bfd_vma *valp) |
| 859 | { |
| 860 | if (sym->st_shndx == SHN_COMMON |
| 861 | && !bfd_link_relocatable (info) |
| 862 | && sym->st_size <= elf_gp_size (abfd)) |
| 863 | { |
| 864 | /* Common symbols less than or equal to -G nn bytes are |
| 865 | automatically put into .sbss. */ |
| 866 | |
| 867 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
| 868 | |
| 869 | if (scomm == NULL) |
| 870 | { |
| 871 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
| 872 | (SEC_ALLOC |
| 873 | | SEC_IS_COMMON |
| 874 | | SEC_LINKER_CREATED)); |
| 875 | if (scomm == NULL) |
| 876 | return FALSE; |
| 877 | } |
| 878 | |
| 879 | *secp = scomm; |
| 880 | *valp = sym->st_size; |
| 881 | } |
| 882 | |
| 883 | return TRUE; |
| 884 | } |
| 885 | |
| 886 | /* According to the Tahoe assembler spec, all labels starting with a |
| 887 | '.' are local. */ |
| 888 | |
| 889 | static bfd_boolean |
| 890 | elf64_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
| 891 | const char *name) |
| 892 | { |
| 893 | return name[0] == '.'; |
| 894 | } |
| 895 | |
| 896 | /* Should we do dynamic things to this symbol? */ |
| 897 | |
| 898 | static bfd_boolean |
| 899 | elf64_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h) |
| 900 | { |
| 901 | return h != NULL && h->def_dynamic; |
| 902 | } |
| 903 | |
| 904 | static struct bfd_hash_entry* |
| 905 | elf64_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry, |
| 906 | struct bfd_hash_table *table, |
| 907 | const char *string) |
| 908 | { |
| 909 | struct elf64_ia64_link_hash_entry *ret; |
| 910 | ret = (struct elf64_ia64_link_hash_entry *) entry; |
| 911 | |
| 912 | /* Allocate the structure if it has not already been allocated by a |
| 913 | subclass. */ |
| 914 | if (!ret) |
| 915 | ret = bfd_hash_allocate (table, sizeof (*ret)); |
| 916 | |
| 917 | if (!ret) |
| 918 | return 0; |
| 919 | |
| 920 | /* Call the allocation method of the superclass. */ |
| 921 | ret = ((struct elf64_ia64_link_hash_entry *) |
| 922 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 923 | table, string)); |
| 924 | |
| 925 | ret->info = NULL; |
| 926 | ret->count = 0; |
| 927 | ret->sorted_count = 0; |
| 928 | ret->size = 0; |
| 929 | return (struct bfd_hash_entry *) ret; |
| 930 | } |
| 931 | |
| 932 | static void |
| 933 | elf64_ia64_hash_hide_symbol (struct bfd_link_info *info, |
| 934 | struct elf_link_hash_entry *xh, |
| 935 | bfd_boolean force_local) |
| 936 | { |
| 937 | struct elf64_ia64_link_hash_entry *h; |
| 938 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 939 | unsigned int count; |
| 940 | |
| 941 | h = (struct elf64_ia64_link_hash_entry *)xh; |
| 942 | |
| 943 | _bfd_elf_link_hash_hide_symbol (info, &h->root, force_local); |
| 944 | |
| 945 | for (count = h->count, dyn_i = h->info; |
| 946 | count != 0; |
| 947 | count--, dyn_i++) |
| 948 | { |
| 949 | dyn_i->want_plt2 = 0; |
| 950 | dyn_i->want_plt = 0; |
| 951 | } |
| 952 | } |
| 953 | |
| 954 | /* Compute a hash of a local hash entry. */ |
| 955 | |
| 956 | static hashval_t |
| 957 | elf64_ia64_local_htab_hash (const void *ptr) |
| 958 | { |
| 959 | struct elf64_ia64_local_hash_entry *entry |
| 960 | = (struct elf64_ia64_local_hash_entry *) ptr; |
| 961 | |
| 962 | return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym); |
| 963 | } |
| 964 | |
| 965 | /* Compare local hash entries. */ |
| 966 | |
| 967 | static int |
| 968 | elf64_ia64_local_htab_eq (const void *ptr1, const void *ptr2) |
| 969 | { |
| 970 | struct elf64_ia64_local_hash_entry *entry1 |
| 971 | = (struct elf64_ia64_local_hash_entry *) ptr1; |
| 972 | struct elf64_ia64_local_hash_entry *entry2 |
| 973 | = (struct elf64_ia64_local_hash_entry *) ptr2; |
| 974 | |
| 975 | return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym; |
| 976 | } |
| 977 | |
| 978 | /* Free the global elf64_ia64_dyn_sym_info array. */ |
| 979 | |
| 980 | static bfd_boolean |
| 981 | elf64_ia64_global_dyn_info_free (void **xentry, |
| 982 | void * unused ATTRIBUTE_UNUSED) |
| 983 | { |
| 984 | struct elf64_ia64_link_hash_entry *entry |
| 985 | = (struct elf64_ia64_link_hash_entry *) xentry; |
| 986 | |
| 987 | if (entry->root.root.type == bfd_link_hash_warning) |
| 988 | entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link; |
| 989 | |
| 990 | if (entry->info) |
| 991 | { |
| 992 | free (entry->info); |
| 993 | entry->info = NULL; |
| 994 | entry->count = 0; |
| 995 | entry->sorted_count = 0; |
| 996 | entry->size = 0; |
| 997 | } |
| 998 | |
| 999 | return TRUE; |
| 1000 | } |
| 1001 | |
| 1002 | /* Free the local elf64_ia64_dyn_sym_info array. */ |
| 1003 | |
| 1004 | static bfd_boolean |
| 1005 | elf64_ia64_local_dyn_info_free (void **slot, |
| 1006 | void * unused ATTRIBUTE_UNUSED) |
| 1007 | { |
| 1008 | struct elf64_ia64_local_hash_entry *entry |
| 1009 | = (struct elf64_ia64_local_hash_entry *) *slot; |
| 1010 | |
| 1011 | if (entry->info) |
| 1012 | { |
| 1013 | free (entry->info); |
| 1014 | entry->info = NULL; |
| 1015 | entry->count = 0; |
| 1016 | entry->sorted_count = 0; |
| 1017 | entry->size = 0; |
| 1018 | } |
| 1019 | |
| 1020 | return TRUE; |
| 1021 | } |
| 1022 | |
| 1023 | /* Destroy IA-64 linker hash table. */ |
| 1024 | |
| 1025 | static void |
| 1026 | elf64_ia64_link_hash_table_free (bfd *obfd) |
| 1027 | { |
| 1028 | struct elf64_ia64_link_hash_table *ia64_info |
| 1029 | = (struct elf64_ia64_link_hash_table *) obfd->link.hash; |
| 1030 | if (ia64_info->loc_hash_table) |
| 1031 | { |
| 1032 | htab_traverse (ia64_info->loc_hash_table, |
| 1033 | elf64_ia64_local_dyn_info_free, NULL); |
| 1034 | htab_delete (ia64_info->loc_hash_table); |
| 1035 | } |
| 1036 | if (ia64_info->loc_hash_memory) |
| 1037 | objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory); |
| 1038 | elf_link_hash_traverse (&ia64_info->root, |
| 1039 | elf64_ia64_global_dyn_info_free, NULL); |
| 1040 | _bfd_elf_link_hash_table_free (obfd); |
| 1041 | } |
| 1042 | |
| 1043 | /* Create the derived linker hash table. The IA-64 ELF port uses this |
| 1044 | derived hash table to keep information specific to the IA-64 ElF |
| 1045 | linker (without using static variables). */ |
| 1046 | |
| 1047 | static struct bfd_link_hash_table * |
| 1048 | elf64_ia64_hash_table_create (bfd *abfd) |
| 1049 | { |
| 1050 | struct elf64_ia64_link_hash_table *ret; |
| 1051 | |
| 1052 | ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret)); |
| 1053 | if (!ret) |
| 1054 | return NULL; |
| 1055 | |
| 1056 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 1057 | elf64_ia64_new_elf_hash_entry, |
| 1058 | sizeof (struct elf64_ia64_link_hash_entry), |
| 1059 | IA64_ELF_DATA)) |
| 1060 | { |
| 1061 | free (ret); |
| 1062 | return NULL; |
| 1063 | } |
| 1064 | |
| 1065 | ret->loc_hash_table = htab_try_create (1024, elf64_ia64_local_htab_hash, |
| 1066 | elf64_ia64_local_htab_eq, NULL); |
| 1067 | ret->loc_hash_memory = objalloc_create (); |
| 1068 | if (!ret->loc_hash_table || !ret->loc_hash_memory) |
| 1069 | { |
| 1070 | elf64_ia64_link_hash_table_free (abfd); |
| 1071 | return NULL; |
| 1072 | } |
| 1073 | ret->root.root.hash_table_free = elf64_ia64_link_hash_table_free; |
| 1074 | |
| 1075 | return &ret->root.root; |
| 1076 | } |
| 1077 | |
| 1078 | /* Traverse both local and global hash tables. */ |
| 1079 | |
| 1080 | struct elf64_ia64_dyn_sym_traverse_data |
| 1081 | { |
| 1082 | bfd_boolean (*func) (struct elf64_ia64_dyn_sym_info *, void *); |
| 1083 | void * data; |
| 1084 | }; |
| 1085 | |
| 1086 | static bfd_boolean |
| 1087 | elf64_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry, |
| 1088 | void * xdata) |
| 1089 | { |
| 1090 | struct elf64_ia64_link_hash_entry *entry |
| 1091 | = (struct elf64_ia64_link_hash_entry *) xentry; |
| 1092 | struct elf64_ia64_dyn_sym_traverse_data *data |
| 1093 | = (struct elf64_ia64_dyn_sym_traverse_data *) xdata; |
| 1094 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 1095 | unsigned int count; |
| 1096 | |
| 1097 | if (entry->root.root.type == bfd_link_hash_warning) |
| 1098 | entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link; |
| 1099 | |
| 1100 | for (count = entry->count, dyn_i = entry->info; |
| 1101 | count != 0; |
| 1102 | count--, dyn_i++) |
| 1103 | if (! (*data->func) (dyn_i, data->data)) |
| 1104 | return FALSE; |
| 1105 | return TRUE; |
| 1106 | } |
| 1107 | |
| 1108 | static bfd_boolean |
| 1109 | elf64_ia64_local_dyn_sym_thunk (void **slot, void * xdata) |
| 1110 | { |
| 1111 | struct elf64_ia64_local_hash_entry *entry |
| 1112 | = (struct elf64_ia64_local_hash_entry *) *slot; |
| 1113 | struct elf64_ia64_dyn_sym_traverse_data *data |
| 1114 | = (struct elf64_ia64_dyn_sym_traverse_data *) xdata; |
| 1115 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 1116 | unsigned int count; |
| 1117 | |
| 1118 | for (count = entry->count, dyn_i = entry->info; |
| 1119 | count != 0; |
| 1120 | count--, dyn_i++) |
| 1121 | if (! (*data->func) (dyn_i, data->data)) |
| 1122 | return FALSE; |
| 1123 | return TRUE; |
| 1124 | } |
| 1125 | |
| 1126 | static void |
| 1127 | elf64_ia64_dyn_sym_traverse (struct elf64_ia64_link_hash_table *ia64_info, |
| 1128 | bfd_boolean (*func) (struct elf64_ia64_dyn_sym_info *, void *), |
| 1129 | void * data) |
| 1130 | { |
| 1131 | struct elf64_ia64_dyn_sym_traverse_data xdata; |
| 1132 | |
| 1133 | xdata.func = func; |
| 1134 | xdata.data = data; |
| 1135 | |
| 1136 | elf_link_hash_traverse (&ia64_info->root, |
| 1137 | elf64_ia64_global_dyn_sym_thunk, &xdata); |
| 1138 | htab_traverse (ia64_info->loc_hash_table, |
| 1139 | elf64_ia64_local_dyn_sym_thunk, &xdata); |
| 1140 | } |
| 1141 | |
| 1142 | #define NOTE_NAME "IPF/VMS" |
| 1143 | |
| 1144 | static bfd_boolean |
| 1145 | create_ia64_vms_notes (bfd *abfd, struct bfd_link_info *info, |
| 1146 | unsigned int time_hi, unsigned int time_lo) |
| 1147 | { |
| 1148 | #define NBR_NOTES 7 |
| 1149 | Elf_Internal_Note notes[NBR_NOTES]; |
| 1150 | char *module_name; |
| 1151 | int module_name_len; |
| 1152 | unsigned char cur_time[8]; |
| 1153 | Elf64_External_VMS_ORIG_DYN_Note *orig_dyn; |
| 1154 | unsigned int orig_dyn_size; |
| 1155 | unsigned int note_size; |
| 1156 | int i; |
| 1157 | unsigned char *noteptr; |
| 1158 | unsigned char *note_contents; |
| 1159 | struct elf64_ia64_link_hash_table *ia64_info; |
| 1160 | |
| 1161 | ia64_info = elf64_ia64_hash_table (info); |
| 1162 | |
| 1163 | module_name = vms_get_module_name (bfd_get_filename (abfd), TRUE); |
| 1164 | module_name_len = strlen (module_name) + 1; |
| 1165 | |
| 1166 | bfd_putl32 (time_lo, cur_time + 0); |
| 1167 | bfd_putl32 (time_hi, cur_time + 4); |
| 1168 | |
| 1169 | /* Note 0: IMGNAM. */ |
| 1170 | notes[0].type = NT_VMS_IMGNAM; |
| 1171 | notes[0].descdata = module_name; |
| 1172 | notes[0].descsz = module_name_len; |
| 1173 | |
| 1174 | /* Note 1: GSTNAM. */ |
| 1175 | notes[1].type = NT_VMS_GSTNAM; |
| 1176 | notes[1].descdata = module_name; |
| 1177 | notes[1].descsz = module_name_len; |
| 1178 | |
| 1179 | /* Note 2: IMGID. */ |
| 1180 | #define IMG_ID "V1.0" |
| 1181 | notes[2].type = NT_VMS_IMGID; |
| 1182 | notes[2].descdata = IMG_ID; |
| 1183 | notes[2].descsz = sizeof (IMG_ID); |
| 1184 | |
| 1185 | /* Note 3: Linktime. */ |
| 1186 | notes[3].type = NT_VMS_LINKTIME; |
| 1187 | notes[3].descdata = (char *)cur_time; |
| 1188 | notes[3].descsz = sizeof (cur_time); |
| 1189 | |
| 1190 | /* Note 4: Linker id. */ |
| 1191 | notes[4].type = NT_VMS_LINKID; |
| 1192 | notes[4].descdata = "GNU ld " BFD_VERSION_STRING; |
| 1193 | notes[4].descsz = strlen (notes[4].descdata) + 1; |
| 1194 | |
| 1195 | /* Note 5: Original dyn. */ |
| 1196 | orig_dyn_size = (sizeof (*orig_dyn) + sizeof (IMG_ID) - 1 + 7) & ~7; |
| 1197 | orig_dyn = bfd_zalloc (abfd, orig_dyn_size); |
| 1198 | if (orig_dyn == NULL) |
| 1199 | return FALSE; |
| 1200 | bfd_putl32 (1, orig_dyn->major_id); |
| 1201 | bfd_putl32 (3, orig_dyn->minor_id); |
| 1202 | memcpy (orig_dyn->manipulation_date, cur_time, sizeof (cur_time)); |
| 1203 | bfd_putl64 (VMS_LF_IMGSTA | VMS_LF_MAIN, orig_dyn->link_flags); |
| 1204 | bfd_putl32 (EF_IA_64_ABI64, orig_dyn->elf_flags); |
| 1205 | memcpy (orig_dyn->imgid, IMG_ID, sizeof (IMG_ID)); |
| 1206 | notes[5].type = NT_VMS_ORIG_DYN; |
| 1207 | notes[5].descdata = (char *)orig_dyn; |
| 1208 | notes[5].descsz = orig_dyn_size; |
| 1209 | |
| 1210 | /* Note 3: Patchtime. */ |
| 1211 | notes[6].type = NT_VMS_PATCHTIME; |
| 1212 | notes[6].descdata = (char *)cur_time; |
| 1213 | notes[6].descsz = sizeof (cur_time); |
| 1214 | |
| 1215 | /* Compute notes size. */ |
| 1216 | note_size = 0; |
| 1217 | for (i = 0; i < NBR_NOTES; i++) |
| 1218 | note_size += sizeof (Elf64_External_VMS_Note) - 1 |
| 1219 | + ((sizeof (NOTE_NAME) - 1 + 7) & ~7) |
| 1220 | + ((notes[i].descsz + 7) & ~7); |
| 1221 | |
| 1222 | /* Malloc a temporary buffer large enough for most notes */ |
| 1223 | note_contents = (unsigned char *) bfd_zalloc (abfd, note_size); |
| 1224 | if (note_contents == NULL) |
| 1225 | return FALSE; |
| 1226 | noteptr = note_contents; |
| 1227 | |
| 1228 | /* Fill notes. */ |
| 1229 | for (i = 0; i < NBR_NOTES; i++) |
| 1230 | { |
| 1231 | Elf64_External_VMS_Note *enote = (Elf64_External_VMS_Note *) noteptr; |
| 1232 | |
| 1233 | bfd_putl64 (sizeof (NOTE_NAME) - 1, enote->namesz); |
| 1234 | bfd_putl64 (notes[i].descsz, enote->descsz); |
| 1235 | bfd_putl64 (notes[i].type, enote->type); |
| 1236 | |
| 1237 | noteptr = (unsigned char *)enote->name; |
| 1238 | memcpy (noteptr, NOTE_NAME, sizeof (NOTE_NAME) - 1); |
| 1239 | noteptr += (sizeof (NOTE_NAME) - 1 + 7) & ~7; |
| 1240 | memcpy (noteptr, notes[i].descdata, notes[i].descsz); |
| 1241 | noteptr += (notes[i].descsz + 7) & ~7; |
| 1242 | } |
| 1243 | |
| 1244 | ia64_info->note_sec->contents = note_contents; |
| 1245 | ia64_info->note_sec->size = note_size; |
| 1246 | |
| 1247 | free (module_name); |
| 1248 | |
| 1249 | return TRUE; |
| 1250 | } |
| 1251 | |
| 1252 | static bfd_boolean |
| 1253 | elf64_ia64_create_dynamic_sections (bfd *abfd, |
| 1254 | struct bfd_link_info *info) |
| 1255 | { |
| 1256 | struct elf64_ia64_link_hash_table *ia64_info; |
| 1257 | asection *s; |
| 1258 | flagword flags; |
| 1259 | const struct elf_backend_data *bed; |
| 1260 | |
| 1261 | ia64_info = elf64_ia64_hash_table (info); |
| 1262 | if (ia64_info == NULL) |
| 1263 | return FALSE; |
| 1264 | |
| 1265 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1266 | return TRUE; |
| 1267 | |
| 1268 | abfd = elf_hash_table (info)->dynobj; |
| 1269 | bed = get_elf_backend_data (abfd); |
| 1270 | |
| 1271 | flags = bed->dynamic_sec_flags; |
| 1272 | |
| 1273 | s = bfd_make_section_anyway_with_flags (abfd, ".dynamic", |
| 1274 | flags | SEC_READONLY); |
| 1275 | if (s == NULL |
| 1276 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 1277 | return FALSE; |
| 1278 | |
| 1279 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags | SEC_READONLY); |
| 1280 | if (s == NULL |
| 1281 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 1282 | return FALSE; |
| 1283 | ia64_info->root.splt = s; |
| 1284 | |
| 1285 | if (!get_got (abfd, ia64_info)) |
| 1286 | return FALSE; |
| 1287 | |
| 1288 | if (!get_pltoff (abfd, ia64_info)) |
| 1289 | return FALSE; |
| 1290 | |
| 1291 | s = bfd_make_section_anyway_with_flags (abfd, ".vmsdynstr", |
| 1292 | (SEC_ALLOC |
| 1293 | | SEC_HAS_CONTENTS |
| 1294 | | SEC_IN_MEMORY |
| 1295 | | SEC_LINKER_CREATED)); |
| 1296 | if (s == NULL |
| 1297 | || !bfd_set_section_alignment (abfd, s, 0)) |
| 1298 | return FALSE; |
| 1299 | |
| 1300 | /* Create a fixup section. */ |
| 1301 | s = bfd_make_section_anyway_with_flags (abfd, ".fixups", |
| 1302 | (SEC_ALLOC |
| 1303 | | SEC_HAS_CONTENTS |
| 1304 | | SEC_IN_MEMORY |
| 1305 | | SEC_LINKER_CREATED)); |
| 1306 | if (s == NULL |
| 1307 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1308 | return FALSE; |
| 1309 | ia64_info->fixups_sec = s; |
| 1310 | |
| 1311 | /* Create the transfer fixup section. */ |
| 1312 | s = bfd_make_section_anyway_with_flags (abfd, ".transfer", |
| 1313 | (SEC_ALLOC |
| 1314 | | SEC_HAS_CONTENTS |
| 1315 | | SEC_IN_MEMORY |
| 1316 | | SEC_LINKER_CREATED)); |
| 1317 | if (s == NULL |
| 1318 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1319 | return FALSE; |
| 1320 | s->size = sizeof (struct elf64_vms_transfer); |
| 1321 | ia64_info->transfer_sec = s; |
| 1322 | |
| 1323 | /* Create note section. */ |
| 1324 | s = bfd_make_section_anyway_with_flags (abfd, ".vms.note", |
| 1325 | (SEC_LINKER_CREATED |
| 1326 | | SEC_HAS_CONTENTS |
| 1327 | | SEC_IN_MEMORY |
| 1328 | | SEC_READONLY)); |
| 1329 | if (s == NULL |
| 1330 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1331 | return FALSE; |
| 1332 | ia64_info->note_sec = s; |
| 1333 | |
| 1334 | elf_hash_table (info)->dynamic_sections_created = TRUE; |
| 1335 | return TRUE; |
| 1336 | } |
| 1337 | |
| 1338 | /* Find and/or create a hash entry for local symbol. */ |
| 1339 | static struct elf64_ia64_local_hash_entry * |
| 1340 | get_local_sym_hash (struct elf64_ia64_link_hash_table *ia64_info, |
| 1341 | bfd *abfd, const Elf_Internal_Rela *rel, |
| 1342 | bfd_boolean create) |
| 1343 | { |
| 1344 | struct elf64_ia64_local_hash_entry e, *ret; |
| 1345 | asection *sec = abfd->sections; |
| 1346 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
| 1347 | ELF64_R_SYM (rel->r_info)); |
| 1348 | void **slot; |
| 1349 | |
| 1350 | e.id = sec->id; |
| 1351 | e.r_sym = ELF64_R_SYM (rel->r_info); |
| 1352 | slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h, |
| 1353 | create ? INSERT : NO_INSERT); |
| 1354 | |
| 1355 | if (!slot) |
| 1356 | return NULL; |
| 1357 | |
| 1358 | if (*slot) |
| 1359 | return (struct elf64_ia64_local_hash_entry *) *slot; |
| 1360 | |
| 1361 | ret = (struct elf64_ia64_local_hash_entry *) |
| 1362 | objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory, |
| 1363 | sizeof (struct elf64_ia64_local_hash_entry)); |
| 1364 | if (ret) |
| 1365 | { |
| 1366 | memset (ret, 0, sizeof (*ret)); |
| 1367 | ret->id = sec->id; |
| 1368 | ret->r_sym = ELF64_R_SYM (rel->r_info); |
| 1369 | *slot = ret; |
| 1370 | } |
| 1371 | return ret; |
| 1372 | } |
| 1373 | |
| 1374 | /* Used to sort elf64_ia64_dyn_sym_info array. */ |
| 1375 | |
| 1376 | static int |
| 1377 | addend_compare (const void *xp, const void *yp) |
| 1378 | { |
| 1379 | const struct elf64_ia64_dyn_sym_info *x |
| 1380 | = (const struct elf64_ia64_dyn_sym_info *) xp; |
| 1381 | const struct elf64_ia64_dyn_sym_info *y |
| 1382 | = (const struct elf64_ia64_dyn_sym_info *) yp; |
| 1383 | |
| 1384 | return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0; |
| 1385 | } |
| 1386 | |
| 1387 | /* Sort elf64_ia64_dyn_sym_info array and remove duplicates. */ |
| 1388 | |
| 1389 | static unsigned int |
| 1390 | sort_dyn_sym_info (struct elf64_ia64_dyn_sym_info *info, |
| 1391 | unsigned int count) |
| 1392 | { |
| 1393 | bfd_vma curr, prev, got_offset; |
| 1394 | unsigned int i, kept, dupes, diff, dest, src, len; |
| 1395 | |
| 1396 | qsort (info, count, sizeof (*info), addend_compare); |
| 1397 | |
| 1398 | /* Find the first duplicate. */ |
| 1399 | prev = info [0].addend; |
| 1400 | got_offset = info [0].got_offset; |
| 1401 | for (i = 1; i < count; i++) |
| 1402 | { |
| 1403 | curr = info [i].addend; |
| 1404 | if (curr == prev) |
| 1405 | { |
| 1406 | /* For duplicates, make sure that GOT_OFFSET is valid. */ |
| 1407 | if (got_offset == (bfd_vma) -1) |
| 1408 | got_offset = info [i].got_offset; |
| 1409 | break; |
| 1410 | } |
| 1411 | got_offset = info [i].got_offset; |
| 1412 | prev = curr; |
| 1413 | } |
| 1414 | |
| 1415 | /* We may move a block of elements to here. */ |
| 1416 | dest = i++; |
| 1417 | |
| 1418 | /* Remove duplicates. */ |
| 1419 | if (i < count) |
| 1420 | { |
| 1421 | while (i < count) |
| 1422 | { |
| 1423 | /* For duplicates, make sure that the kept one has a valid |
| 1424 | got_offset. */ |
| 1425 | kept = dest - 1; |
| 1426 | if (got_offset != (bfd_vma) -1) |
| 1427 | info [kept].got_offset = got_offset; |
| 1428 | |
| 1429 | curr = info [i].addend; |
| 1430 | got_offset = info [i].got_offset; |
| 1431 | |
| 1432 | /* Move a block of elements whose first one is different from |
| 1433 | the previous. */ |
| 1434 | if (curr == prev) |
| 1435 | { |
| 1436 | for (src = i + 1; src < count; src++) |
| 1437 | { |
| 1438 | if (info [src].addend != curr) |
| 1439 | break; |
| 1440 | /* For duplicates, make sure that GOT_OFFSET is |
| 1441 | valid. */ |
| 1442 | if (got_offset == (bfd_vma) -1) |
| 1443 | got_offset = info [src].got_offset; |
| 1444 | } |
| 1445 | |
| 1446 | /* Make sure that the kept one has a valid got_offset. */ |
| 1447 | if (got_offset != (bfd_vma) -1) |
| 1448 | info [kept].got_offset = got_offset; |
| 1449 | } |
| 1450 | else |
| 1451 | src = i; |
| 1452 | |
| 1453 | if (src >= count) |
| 1454 | break; |
| 1455 | |
| 1456 | /* Find the next duplicate. SRC will be kept. */ |
| 1457 | prev = info [src].addend; |
| 1458 | got_offset = info [src].got_offset; |
| 1459 | for (dupes = src + 1; dupes < count; dupes ++) |
| 1460 | { |
| 1461 | curr = info [dupes].addend; |
| 1462 | if (curr == prev) |
| 1463 | { |
| 1464 | /* Make sure that got_offset is valid. */ |
| 1465 | if (got_offset == (bfd_vma) -1) |
| 1466 | got_offset = info [dupes].got_offset; |
| 1467 | |
| 1468 | /* For duplicates, make sure that the kept one has |
| 1469 | a valid got_offset. */ |
| 1470 | if (got_offset != (bfd_vma) -1) |
| 1471 | info [dupes - 1].got_offset = got_offset; |
| 1472 | break; |
| 1473 | } |
| 1474 | got_offset = info [dupes].got_offset; |
| 1475 | prev = curr; |
| 1476 | } |
| 1477 | |
| 1478 | /* How much to move. */ |
| 1479 | len = dupes - src; |
| 1480 | i = dupes + 1; |
| 1481 | |
| 1482 | if (len == 1 && dupes < count) |
| 1483 | { |
| 1484 | /* If we only move 1 element, we combine it with the next |
| 1485 | one. There must be at least a duplicate. Find the |
| 1486 | next different one. */ |
| 1487 | for (diff = dupes + 1, src++; diff < count; diff++, src++) |
| 1488 | { |
| 1489 | if (info [diff].addend != curr) |
| 1490 | break; |
| 1491 | /* Make sure that got_offset is valid. */ |
| 1492 | if (got_offset == (bfd_vma) -1) |
| 1493 | got_offset = info [diff].got_offset; |
| 1494 | } |
| 1495 | |
| 1496 | /* Makre sure that the last duplicated one has an valid |
| 1497 | offset. */ |
| 1498 | BFD_ASSERT (curr == prev); |
| 1499 | if (got_offset != (bfd_vma) -1) |
| 1500 | info [diff - 1].got_offset = got_offset; |
| 1501 | |
| 1502 | if (diff < count) |
| 1503 | { |
| 1504 | /* Find the next duplicate. Track the current valid |
| 1505 | offset. */ |
| 1506 | prev = info [diff].addend; |
| 1507 | got_offset = info [diff].got_offset; |
| 1508 | for (dupes = diff + 1; dupes < count; dupes ++) |
| 1509 | { |
| 1510 | curr = info [dupes].addend; |
| 1511 | if (curr == prev) |
| 1512 | { |
| 1513 | /* For duplicates, make sure that GOT_OFFSET |
| 1514 | is valid. */ |
| 1515 | if (got_offset == (bfd_vma) -1) |
| 1516 | got_offset = info [dupes].got_offset; |
| 1517 | break; |
| 1518 | } |
| 1519 | got_offset = info [dupes].got_offset; |
| 1520 | prev = curr; |
| 1521 | diff++; |
| 1522 | } |
| 1523 | |
| 1524 | len = diff - src + 1; |
| 1525 | i = diff + 1; |
| 1526 | } |
| 1527 | } |
| 1528 | |
| 1529 | memmove (&info [dest], &info [src], len * sizeof (*info)); |
| 1530 | |
| 1531 | dest += len; |
| 1532 | } |
| 1533 | |
| 1534 | count = dest; |
| 1535 | } |
| 1536 | else |
| 1537 | { |
| 1538 | /* When we get here, either there is no duplicate at all or |
| 1539 | the only duplicate is the last element. */ |
| 1540 | if (dest < count) |
| 1541 | { |
| 1542 | /* If the last element is a duplicate, make sure that the |
| 1543 | kept one has a valid got_offset. We also update count. */ |
| 1544 | if (got_offset != (bfd_vma) -1) |
| 1545 | info [dest - 1].got_offset = got_offset; |
| 1546 | count = dest; |
| 1547 | } |
| 1548 | } |
| 1549 | |
| 1550 | return count; |
| 1551 | } |
| 1552 | |
| 1553 | /* Find and/or create a descriptor for dynamic symbol info. This will |
| 1554 | vary based on global or local symbol, and the addend to the reloc. |
| 1555 | |
| 1556 | We don't sort when inserting. Also, we sort and eliminate |
| 1557 | duplicates if there is an unsorted section. Typically, this will |
| 1558 | only happen once, because we do all insertions before lookups. We |
| 1559 | then use bsearch to do a lookup. This also allows lookups to be |
| 1560 | fast. So we have fast insertion (O(log N) due to duplicate check), |
| 1561 | fast lookup (O(log N)) and one sort (O(N log N) expected time). |
| 1562 | Previously, all lookups were O(N) because of the use of the linked |
| 1563 | list and also all insertions were O(N) because of the check for |
| 1564 | duplicates. There are some complications here because the array |
| 1565 | size grows occasionally, which may add an O(N) factor, but this |
| 1566 | should be rare. Also, we free the excess array allocation, which |
| 1567 | requires a copy which is O(N), but this only happens once. */ |
| 1568 | |
| 1569 | static struct elf64_ia64_dyn_sym_info * |
| 1570 | get_dyn_sym_info (struct elf64_ia64_link_hash_table *ia64_info, |
| 1571 | struct elf_link_hash_entry *h, bfd *abfd, |
| 1572 | const Elf_Internal_Rela *rel, bfd_boolean create) |
| 1573 | { |
| 1574 | struct elf64_ia64_dyn_sym_info **info_p, *info, *dyn_i, key; |
| 1575 | unsigned int *count_p, *sorted_count_p, *size_p; |
| 1576 | unsigned int count, sorted_count, size; |
| 1577 | bfd_vma addend = rel ? rel->r_addend : 0; |
| 1578 | bfd_size_type amt; |
| 1579 | |
| 1580 | if (h) |
| 1581 | { |
| 1582 | struct elf64_ia64_link_hash_entry *global_h; |
| 1583 | |
| 1584 | global_h = (struct elf64_ia64_link_hash_entry *) h; |
| 1585 | info_p = &global_h->info; |
| 1586 | count_p = &global_h->count; |
| 1587 | sorted_count_p = &global_h->sorted_count; |
| 1588 | size_p = &global_h->size; |
| 1589 | } |
| 1590 | else |
| 1591 | { |
| 1592 | struct elf64_ia64_local_hash_entry *loc_h; |
| 1593 | |
| 1594 | loc_h = get_local_sym_hash (ia64_info, abfd, rel, create); |
| 1595 | if (!loc_h) |
| 1596 | { |
| 1597 | BFD_ASSERT (!create); |
| 1598 | return NULL; |
| 1599 | } |
| 1600 | |
| 1601 | info_p = &loc_h->info; |
| 1602 | count_p = &loc_h->count; |
| 1603 | sorted_count_p = &loc_h->sorted_count; |
| 1604 | size_p = &loc_h->size; |
| 1605 | } |
| 1606 | |
| 1607 | count = *count_p; |
| 1608 | sorted_count = *sorted_count_p; |
| 1609 | size = *size_p; |
| 1610 | info = *info_p; |
| 1611 | if (create) |
| 1612 | { |
| 1613 | /* When we create the array, we don't check for duplicates, |
| 1614 | except in the previously sorted section if one exists, and |
| 1615 | against the last inserted entry. This allows insertions to |
| 1616 | be fast. */ |
| 1617 | if (info) |
| 1618 | { |
| 1619 | if (sorted_count) |
| 1620 | { |
| 1621 | /* Try bsearch first on the sorted section. */ |
| 1622 | key.addend = addend; |
| 1623 | dyn_i = bsearch (&key, info, sorted_count, |
| 1624 | sizeof (*info), addend_compare); |
| 1625 | |
| 1626 | if (dyn_i) |
| 1627 | { |
| 1628 | return dyn_i; |
| 1629 | } |
| 1630 | } |
| 1631 | |
| 1632 | /* Do a quick check for the last inserted entry. */ |
| 1633 | dyn_i = info + count - 1; |
| 1634 | if (dyn_i->addend == addend) |
| 1635 | { |
| 1636 | return dyn_i; |
| 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | if (size == 0) |
| 1641 | { |
| 1642 | /* It is the very first element. We create the array of size |
| 1643 | 1. */ |
| 1644 | size = 1; |
| 1645 | amt = size * sizeof (*info); |
| 1646 | info = bfd_malloc (amt); |
| 1647 | } |
| 1648 | else if (size <= count) |
| 1649 | { |
| 1650 | /* We double the array size every time when we reach the |
| 1651 | size limit. */ |
| 1652 | size += size; |
| 1653 | amt = size * sizeof (*info); |
| 1654 | info = bfd_realloc (info, amt); |
| 1655 | } |
| 1656 | else |
| 1657 | goto has_space; |
| 1658 | |
| 1659 | if (info == NULL) |
| 1660 | return NULL; |
| 1661 | *size_p = size; |
| 1662 | *info_p = info; |
| 1663 | |
| 1664 | has_space: |
| 1665 | /* Append the new one to the array. */ |
| 1666 | dyn_i = info + count; |
| 1667 | memset (dyn_i, 0, sizeof (*dyn_i)); |
| 1668 | dyn_i->got_offset = (bfd_vma) -1; |
| 1669 | dyn_i->addend = addend; |
| 1670 | |
| 1671 | /* We increment count only since the new ones are unsorted and |
| 1672 | may have duplicate. */ |
| 1673 | (*count_p)++; |
| 1674 | } |
| 1675 | else |
| 1676 | { |
| 1677 | /* It is a lookup without insertion. Sort array if part of the |
| 1678 | array isn't sorted. */ |
| 1679 | if (count != sorted_count) |
| 1680 | { |
| 1681 | count = sort_dyn_sym_info (info, count); |
| 1682 | *count_p = count; |
| 1683 | *sorted_count_p = count; |
| 1684 | } |
| 1685 | |
| 1686 | /* Free unused memory. */ |
| 1687 | if (size != count) |
| 1688 | { |
| 1689 | amt = count * sizeof (*info); |
| 1690 | info = bfd_malloc (amt); |
| 1691 | if (info != NULL) |
| 1692 | { |
| 1693 | memcpy (info, *info_p, amt); |
| 1694 | free (*info_p); |
| 1695 | *size_p = count; |
| 1696 | *info_p = info; |
| 1697 | } |
| 1698 | } |
| 1699 | |
| 1700 | key.addend = addend; |
| 1701 | dyn_i = bsearch (&key, info, count, |
| 1702 | sizeof (*info), addend_compare); |
| 1703 | } |
| 1704 | |
| 1705 | return dyn_i; |
| 1706 | } |
| 1707 | |
| 1708 | static asection * |
| 1709 | get_got (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info) |
| 1710 | { |
| 1711 | asection *got; |
| 1712 | bfd *dynobj; |
| 1713 | |
| 1714 | got = ia64_info->root.sgot; |
| 1715 | if (!got) |
| 1716 | { |
| 1717 | flagword flags; |
| 1718 | |
| 1719 | dynobj = ia64_info->root.dynobj; |
| 1720 | if (!dynobj) |
| 1721 | ia64_info->root.dynobj = dynobj = abfd; |
| 1722 | |
| 1723 | /* The .got section is always aligned at 8 bytes. */ |
| 1724 | flags = get_elf_backend_data (dynobj)->dynamic_sec_flags; |
| 1725 | got = bfd_make_section_anyway_with_flags (dynobj, ".got", |
| 1726 | flags | SEC_SMALL_DATA); |
| 1727 | if (got == NULL |
| 1728 | || !bfd_set_section_alignment (dynobj, got, 3)) |
| 1729 | return NULL; |
| 1730 | ia64_info->root.sgot = got; |
| 1731 | } |
| 1732 | |
| 1733 | return got; |
| 1734 | } |
| 1735 | |
| 1736 | /* Create function descriptor section (.opd). This section is called .opd |
| 1737 | because it contains "official procedure descriptors". The "official" |
| 1738 | refers to the fact that these descriptors are used when taking the address |
| 1739 | of a procedure, thus ensuring a unique address for each procedure. */ |
| 1740 | |
| 1741 | static asection * |
| 1742 | get_fptr (bfd *abfd, struct bfd_link_info *info, |
| 1743 | struct elf64_ia64_link_hash_table *ia64_info) |
| 1744 | { |
| 1745 | asection *fptr; |
| 1746 | bfd *dynobj; |
| 1747 | |
| 1748 | fptr = ia64_info->fptr_sec; |
| 1749 | if (!fptr) |
| 1750 | { |
| 1751 | dynobj = ia64_info->root.dynobj; |
| 1752 | if (!dynobj) |
| 1753 | ia64_info->root.dynobj = dynobj = abfd; |
| 1754 | |
| 1755 | fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd", |
| 1756 | (SEC_ALLOC |
| 1757 | | SEC_LOAD |
| 1758 | | SEC_HAS_CONTENTS |
| 1759 | | SEC_IN_MEMORY |
| 1760 | | (bfd_link_pie (info) ? 0 |
| 1761 | : SEC_READONLY) |
| 1762 | | SEC_LINKER_CREATED)); |
| 1763 | if (!fptr |
| 1764 | || !bfd_set_section_alignment (dynobj, fptr, 4)) |
| 1765 | { |
| 1766 | BFD_ASSERT (0); |
| 1767 | return NULL; |
| 1768 | } |
| 1769 | |
| 1770 | ia64_info->fptr_sec = fptr; |
| 1771 | |
| 1772 | if (bfd_link_pie (info)) |
| 1773 | { |
| 1774 | asection *fptr_rel; |
| 1775 | fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd", |
| 1776 | (SEC_ALLOC | SEC_LOAD |
| 1777 | | SEC_HAS_CONTENTS |
| 1778 | | SEC_IN_MEMORY |
| 1779 | | SEC_LINKER_CREATED |
| 1780 | | SEC_READONLY)); |
| 1781 | if (fptr_rel == NULL |
| 1782 | || !bfd_set_section_alignment (dynobj, fptr_rel, 3)) |
| 1783 | { |
| 1784 | BFD_ASSERT (0); |
| 1785 | return NULL; |
| 1786 | } |
| 1787 | |
| 1788 | ia64_info->rel_fptr_sec = fptr_rel; |
| 1789 | } |
| 1790 | } |
| 1791 | |
| 1792 | return fptr; |
| 1793 | } |
| 1794 | |
| 1795 | static asection * |
| 1796 | get_pltoff (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info) |
| 1797 | { |
| 1798 | asection *pltoff; |
| 1799 | bfd *dynobj; |
| 1800 | |
| 1801 | pltoff = ia64_info->pltoff_sec; |
| 1802 | if (!pltoff) |
| 1803 | { |
| 1804 | dynobj = ia64_info->root.dynobj; |
| 1805 | if (!dynobj) |
| 1806 | ia64_info->root.dynobj = dynobj = abfd; |
| 1807 | |
| 1808 | pltoff = bfd_make_section_anyway_with_flags (dynobj, |
| 1809 | ELF_STRING_ia64_pltoff, |
| 1810 | (SEC_ALLOC |
| 1811 | | SEC_LOAD |
| 1812 | | SEC_HAS_CONTENTS |
| 1813 | | SEC_IN_MEMORY |
| 1814 | | SEC_SMALL_DATA |
| 1815 | | SEC_LINKER_CREATED)); |
| 1816 | if (!pltoff |
| 1817 | || !bfd_set_section_alignment (dynobj, pltoff, 4)) |
| 1818 | { |
| 1819 | BFD_ASSERT (0); |
| 1820 | return NULL; |
| 1821 | } |
| 1822 | |
| 1823 | ia64_info->pltoff_sec = pltoff; |
| 1824 | } |
| 1825 | |
| 1826 | return pltoff; |
| 1827 | } |
| 1828 | |
| 1829 | static asection * |
| 1830 | get_reloc_section (bfd *abfd, |
| 1831 | struct elf64_ia64_link_hash_table *ia64_info, |
| 1832 | asection *sec, bfd_boolean create) |
| 1833 | { |
| 1834 | const char *srel_name; |
| 1835 | asection *srel; |
| 1836 | bfd *dynobj; |
| 1837 | |
| 1838 | srel_name = (bfd_elf_string_from_elf_section |
| 1839 | (abfd, elf_elfheader(abfd)->e_shstrndx, |
| 1840 | _bfd_elf_single_rel_hdr (sec)->sh_name)); |
| 1841 | if (srel_name == NULL) |
| 1842 | return NULL; |
| 1843 | |
| 1844 | BFD_ASSERT ((CONST_STRNEQ (srel_name, ".rela") |
| 1845 | && strcmp (bfd_get_section_name (abfd, sec), |
| 1846 | srel_name+5) == 0) |
| 1847 | || (CONST_STRNEQ (srel_name, ".rel") |
| 1848 | && strcmp (bfd_get_section_name (abfd, sec), |
| 1849 | srel_name+4) == 0)); |
| 1850 | |
| 1851 | dynobj = ia64_info->root.dynobj; |
| 1852 | if (!dynobj) |
| 1853 | ia64_info->root.dynobj = dynobj = abfd; |
| 1854 | |
| 1855 | srel = bfd_get_linker_section (dynobj, srel_name); |
| 1856 | if (srel == NULL && create) |
| 1857 | { |
| 1858 | srel = bfd_make_section_anyway_with_flags (dynobj, srel_name, |
| 1859 | (SEC_ALLOC | SEC_LOAD |
| 1860 | | SEC_HAS_CONTENTS |
| 1861 | | SEC_IN_MEMORY |
| 1862 | | SEC_LINKER_CREATED |
| 1863 | | SEC_READONLY)); |
| 1864 | if (srel == NULL |
| 1865 | || !bfd_set_section_alignment (dynobj, srel, 3)) |
| 1866 | return NULL; |
| 1867 | } |
| 1868 | |
| 1869 | return srel; |
| 1870 | } |
| 1871 | |
| 1872 | static bfd_boolean |
| 1873 | count_dyn_reloc (bfd *abfd, struct elf64_ia64_dyn_sym_info *dyn_i, |
| 1874 | asection *srel, int type) |
| 1875 | { |
| 1876 | struct elf64_ia64_dyn_reloc_entry *rent; |
| 1877 | |
| 1878 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) |
| 1879 | if (rent->srel == srel && rent->type == type) |
| 1880 | break; |
| 1881 | |
| 1882 | if (!rent) |
| 1883 | { |
| 1884 | rent = ((struct elf64_ia64_dyn_reloc_entry *) |
| 1885 | bfd_alloc (abfd, (bfd_size_type) sizeof (*rent))); |
| 1886 | if (!rent) |
| 1887 | return FALSE; |
| 1888 | |
| 1889 | rent->next = dyn_i->reloc_entries; |
| 1890 | rent->srel = srel; |
| 1891 | rent->type = type; |
| 1892 | rent->count = 0; |
| 1893 | dyn_i->reloc_entries = rent; |
| 1894 | } |
| 1895 | rent->count++; |
| 1896 | |
| 1897 | return TRUE; |
| 1898 | } |
| 1899 | |
| 1900 | static bfd_boolean |
| 1901 | elf64_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 1902 | asection *sec, |
| 1903 | const Elf_Internal_Rela *relocs) |
| 1904 | { |
| 1905 | struct elf64_ia64_link_hash_table *ia64_info; |
| 1906 | const Elf_Internal_Rela *relend; |
| 1907 | Elf_Internal_Shdr *symtab_hdr; |
| 1908 | const Elf_Internal_Rela *rel; |
| 1909 | asection *got, *fptr, *srel, *pltoff; |
| 1910 | enum { |
| 1911 | NEED_GOT = 1, |
| 1912 | NEED_GOTX = 2, |
| 1913 | NEED_FPTR = 4, |
| 1914 | NEED_PLTOFF = 8, |
| 1915 | NEED_MIN_PLT = 16, |
| 1916 | NEED_FULL_PLT = 32, |
| 1917 | NEED_DYNREL = 64, |
| 1918 | NEED_LTOFF_FPTR = 128 |
| 1919 | }; |
| 1920 | int need_entry; |
| 1921 | struct elf_link_hash_entry *h; |
| 1922 | unsigned long r_symndx; |
| 1923 | bfd_boolean maybe_dynamic; |
| 1924 | |
| 1925 | if (bfd_link_relocatable (info)) |
| 1926 | return TRUE; |
| 1927 | |
| 1928 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1929 | ia64_info = elf64_ia64_hash_table (info); |
| 1930 | if (ia64_info == NULL) |
| 1931 | return FALSE; |
| 1932 | |
| 1933 | got = fptr = srel = pltoff = NULL; |
| 1934 | |
| 1935 | relend = relocs + sec->reloc_count; |
| 1936 | |
| 1937 | /* We scan relocations first to create dynamic relocation arrays. We |
| 1938 | modified get_dyn_sym_info to allow fast insertion and support fast |
| 1939 | lookup in the next loop. */ |
| 1940 | for (rel = relocs; rel < relend; ++rel) |
| 1941 | { |
| 1942 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 1943 | if (r_symndx >= symtab_hdr->sh_info) |
| 1944 | { |
| 1945 | long indx = r_symndx - symtab_hdr->sh_info; |
| 1946 | h = elf_sym_hashes (abfd)[indx]; |
| 1947 | while (h->root.type == bfd_link_hash_indirect |
| 1948 | || h->root.type == bfd_link_hash_warning) |
| 1949 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1950 | } |
| 1951 | else |
| 1952 | h = NULL; |
| 1953 | |
| 1954 | /* We can only get preliminary data on whether a symbol is |
| 1955 | locally or externally defined, as not all of the input files |
| 1956 | have yet been processed. Do something with what we know, as |
| 1957 | this may help reduce memory usage and processing time later. */ |
| 1958 | maybe_dynamic = (h && ((!bfd_link_executable (info) |
| 1959 | && (!SYMBOLIC_BIND (info, h) |
| 1960 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) |
| 1961 | || !h->def_regular |
| 1962 | || h->root.type == bfd_link_hash_defweak)); |
| 1963 | |
| 1964 | need_entry = 0; |
| 1965 | switch (ELF64_R_TYPE (rel->r_info)) |
| 1966 | { |
| 1967 | case R_IA64_TPREL64MSB: |
| 1968 | case R_IA64_TPREL64LSB: |
| 1969 | case R_IA64_LTOFF_TPREL22: |
| 1970 | case R_IA64_DTPREL32MSB: |
| 1971 | case R_IA64_DTPREL32LSB: |
| 1972 | case R_IA64_DTPREL64MSB: |
| 1973 | case R_IA64_DTPREL64LSB: |
| 1974 | case R_IA64_LTOFF_DTPREL22: |
| 1975 | case R_IA64_DTPMOD64MSB: |
| 1976 | case R_IA64_DTPMOD64LSB: |
| 1977 | case R_IA64_LTOFF_DTPMOD22: |
| 1978 | abort (); |
| 1979 | break; |
| 1980 | |
| 1981 | case R_IA64_IPLTMSB: |
| 1982 | case R_IA64_IPLTLSB: |
| 1983 | break; |
| 1984 | |
| 1985 | case R_IA64_LTOFF_FPTR22: |
| 1986 | case R_IA64_LTOFF_FPTR64I: |
| 1987 | case R_IA64_LTOFF_FPTR32MSB: |
| 1988 | case R_IA64_LTOFF_FPTR32LSB: |
| 1989 | case R_IA64_LTOFF_FPTR64MSB: |
| 1990 | case R_IA64_LTOFF_FPTR64LSB: |
| 1991 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; |
| 1992 | break; |
| 1993 | |
| 1994 | case R_IA64_FPTR64I: |
| 1995 | case R_IA64_FPTR32MSB: |
| 1996 | case R_IA64_FPTR32LSB: |
| 1997 | case R_IA64_FPTR64MSB: |
| 1998 | case R_IA64_FPTR64LSB: |
| 1999 | if (bfd_link_pic (info) || h) |
| 2000 | need_entry = NEED_FPTR | NEED_DYNREL; |
| 2001 | else |
| 2002 | need_entry = NEED_FPTR; |
| 2003 | break; |
| 2004 | |
| 2005 | case R_IA64_LTOFF22: |
| 2006 | case R_IA64_LTOFF64I: |
| 2007 | need_entry = NEED_GOT; |
| 2008 | break; |
| 2009 | |
| 2010 | case R_IA64_LTOFF22X: |
| 2011 | need_entry = NEED_GOTX; |
| 2012 | break; |
| 2013 | |
| 2014 | case R_IA64_PLTOFF22: |
| 2015 | case R_IA64_PLTOFF64I: |
| 2016 | case R_IA64_PLTOFF64MSB: |
| 2017 | case R_IA64_PLTOFF64LSB: |
| 2018 | need_entry = NEED_PLTOFF; |
| 2019 | if (h) |
| 2020 | { |
| 2021 | if (maybe_dynamic) |
| 2022 | need_entry |= NEED_MIN_PLT; |
| 2023 | } |
| 2024 | else |
| 2025 | { |
| 2026 | (*info->callbacks->warning) |
| 2027 | (info, _("@pltoff reloc against local symbol"), 0, |
| 2028 | abfd, 0, (bfd_vma) 0); |
| 2029 | } |
| 2030 | break; |
| 2031 | |
| 2032 | case R_IA64_PCREL21B: |
| 2033 | case R_IA64_PCREL60B: |
| 2034 | /* Depending on where this symbol is defined, we may or may not |
| 2035 | need a full plt entry. Only skip if we know we'll not need |
| 2036 | the entry -- static or symbolic, and the symbol definition |
| 2037 | has already been seen. */ |
| 2038 | if (maybe_dynamic && rel->r_addend == 0) |
| 2039 | need_entry = NEED_FULL_PLT; |
| 2040 | break; |
| 2041 | |
| 2042 | case R_IA64_IMM14: |
| 2043 | case R_IA64_IMM22: |
| 2044 | case R_IA64_IMM64: |
| 2045 | case R_IA64_DIR32MSB: |
| 2046 | case R_IA64_DIR32LSB: |
| 2047 | case R_IA64_DIR64MSB: |
| 2048 | case R_IA64_DIR64LSB: |
| 2049 | /* Shared objects will always need at least a REL relocation. */ |
| 2050 | if (bfd_link_pic (info) || maybe_dynamic) |
| 2051 | need_entry = NEED_DYNREL; |
| 2052 | break; |
| 2053 | |
| 2054 | case R_IA64_PCREL22: |
| 2055 | case R_IA64_PCREL64I: |
| 2056 | case R_IA64_PCREL32MSB: |
| 2057 | case R_IA64_PCREL32LSB: |
| 2058 | case R_IA64_PCREL64MSB: |
| 2059 | case R_IA64_PCREL64LSB: |
| 2060 | if (maybe_dynamic) |
| 2061 | need_entry = NEED_DYNREL; |
| 2062 | break; |
| 2063 | } |
| 2064 | |
| 2065 | if (!need_entry) |
| 2066 | continue; |
| 2067 | |
| 2068 | if ((need_entry & NEED_FPTR) != 0 |
| 2069 | && rel->r_addend) |
| 2070 | { |
| 2071 | (*info->callbacks->warning) |
| 2072 | (info, _("non-zero addend in @fptr reloc"), 0, |
| 2073 | abfd, 0, (bfd_vma) 0); |
| 2074 | } |
| 2075 | |
| 2076 | if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL) |
| 2077 | return FALSE; |
| 2078 | } |
| 2079 | |
| 2080 | /* Now, we only do lookup without insertion, which is very fast |
| 2081 | with the modified get_dyn_sym_info. */ |
| 2082 | for (rel = relocs; rel < relend; ++rel) |
| 2083 | { |
| 2084 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 2085 | int dynrel_type = R_IA64_NONE; |
| 2086 | |
| 2087 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 2088 | if (r_symndx >= symtab_hdr->sh_info) |
| 2089 | { |
| 2090 | /* We're dealing with a global symbol -- find its hash entry |
| 2091 | and mark it as being referenced. */ |
| 2092 | long indx = r_symndx - symtab_hdr->sh_info; |
| 2093 | h = elf_sym_hashes (abfd)[indx]; |
| 2094 | while (h->root.type == bfd_link_hash_indirect |
| 2095 | || h->root.type == bfd_link_hash_warning) |
| 2096 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2097 | |
| 2098 | /* PR15323, ref flags aren't set for references in the same |
| 2099 | object. */ |
| 2100 | h->root.non_ir_ref = 1; |
| 2101 | h->ref_regular = 1; |
| 2102 | } |
| 2103 | else |
| 2104 | h = NULL; |
| 2105 | |
| 2106 | /* We can only get preliminary data on whether a symbol is |
| 2107 | locally or externally defined, as not all of the input files |
| 2108 | have yet been processed. Do something with what we know, as |
| 2109 | this may help reduce memory usage and processing time later. */ |
| 2110 | maybe_dynamic = (h && ((!bfd_link_executable (info) |
| 2111 | && (!SYMBOLIC_BIND (info, h) |
| 2112 | || info->unresolved_syms_in_shared_libs == RM_IGNORE)) |
| 2113 | || !h->def_regular |
| 2114 | || h->root.type == bfd_link_hash_defweak)); |
| 2115 | |
| 2116 | need_entry = 0; |
| 2117 | switch (ELF64_R_TYPE (rel->r_info)) |
| 2118 | { |
| 2119 | case R_IA64_TPREL64MSB: |
| 2120 | case R_IA64_TPREL64LSB: |
| 2121 | case R_IA64_LTOFF_TPREL22: |
| 2122 | case R_IA64_DTPREL32MSB: |
| 2123 | case R_IA64_DTPREL32LSB: |
| 2124 | case R_IA64_DTPREL64MSB: |
| 2125 | case R_IA64_DTPREL64LSB: |
| 2126 | case R_IA64_LTOFF_DTPREL22: |
| 2127 | case R_IA64_DTPMOD64MSB: |
| 2128 | case R_IA64_DTPMOD64LSB: |
| 2129 | case R_IA64_LTOFF_DTPMOD22: |
| 2130 | abort (); |
| 2131 | break; |
| 2132 | |
| 2133 | case R_IA64_LTOFF_FPTR22: |
| 2134 | case R_IA64_LTOFF_FPTR64I: |
| 2135 | case R_IA64_LTOFF_FPTR32MSB: |
| 2136 | case R_IA64_LTOFF_FPTR32LSB: |
| 2137 | case R_IA64_LTOFF_FPTR64MSB: |
| 2138 | case R_IA64_LTOFF_FPTR64LSB: |
| 2139 | need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; |
| 2140 | break; |
| 2141 | |
| 2142 | case R_IA64_FPTR64I: |
| 2143 | case R_IA64_FPTR32MSB: |
| 2144 | case R_IA64_FPTR32LSB: |
| 2145 | case R_IA64_FPTR64MSB: |
| 2146 | case R_IA64_FPTR64LSB: |
| 2147 | if (bfd_link_pic (info) || h) |
| 2148 | need_entry = NEED_FPTR | NEED_DYNREL; |
| 2149 | else |
| 2150 | need_entry = NEED_FPTR; |
| 2151 | dynrel_type = R_IA64_FPTR64LSB; |
| 2152 | break; |
| 2153 | |
| 2154 | case R_IA64_LTOFF22: |
| 2155 | case R_IA64_LTOFF64I: |
| 2156 | need_entry = NEED_GOT; |
| 2157 | break; |
| 2158 | |
| 2159 | case R_IA64_LTOFF22X: |
| 2160 | need_entry = NEED_GOTX; |
| 2161 | break; |
| 2162 | |
| 2163 | case R_IA64_PLTOFF22: |
| 2164 | case R_IA64_PLTOFF64I: |
| 2165 | case R_IA64_PLTOFF64MSB: |
| 2166 | case R_IA64_PLTOFF64LSB: |
| 2167 | need_entry = NEED_PLTOFF; |
| 2168 | if (h) |
| 2169 | { |
| 2170 | if (maybe_dynamic) |
| 2171 | need_entry |= NEED_MIN_PLT; |
| 2172 | } |
| 2173 | break; |
| 2174 | |
| 2175 | case R_IA64_PCREL21B: |
| 2176 | case R_IA64_PCREL60B: |
| 2177 | /* Depending on where this symbol is defined, we may or may not |
| 2178 | need a full plt entry. Only skip if we know we'll not need |
| 2179 | the entry -- static or symbolic, and the symbol definition |
| 2180 | has already been seen. */ |
| 2181 | if (maybe_dynamic && rel->r_addend == 0) |
| 2182 | need_entry = NEED_FULL_PLT; |
| 2183 | break; |
| 2184 | |
| 2185 | case R_IA64_IMM14: |
| 2186 | case R_IA64_IMM22: |
| 2187 | case R_IA64_IMM64: |
| 2188 | case R_IA64_DIR32MSB: |
| 2189 | case R_IA64_DIR32LSB: |
| 2190 | case R_IA64_DIR64MSB: |
| 2191 | case R_IA64_DIR64LSB: |
| 2192 | /* Shared objects will always need at least a REL relocation. */ |
| 2193 | if (bfd_link_pic (info) || maybe_dynamic) |
| 2194 | need_entry = NEED_DYNREL; |
| 2195 | dynrel_type = R_IA64_DIR64LSB; |
| 2196 | break; |
| 2197 | |
| 2198 | case R_IA64_IPLTMSB: |
| 2199 | case R_IA64_IPLTLSB: |
| 2200 | break; |
| 2201 | |
| 2202 | case R_IA64_PCREL22: |
| 2203 | case R_IA64_PCREL64I: |
| 2204 | case R_IA64_PCREL32MSB: |
| 2205 | case R_IA64_PCREL32LSB: |
| 2206 | case R_IA64_PCREL64MSB: |
| 2207 | case R_IA64_PCREL64LSB: |
| 2208 | if (maybe_dynamic) |
| 2209 | need_entry = NEED_DYNREL; |
| 2210 | dynrel_type = R_IA64_PCREL64LSB; |
| 2211 | break; |
| 2212 | } |
| 2213 | |
| 2214 | if (!need_entry) |
| 2215 | continue; |
| 2216 | |
| 2217 | dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE); |
| 2218 | |
| 2219 | /* Record whether or not this is a local symbol. */ |
| 2220 | dyn_i->h = h; |
| 2221 | |
| 2222 | /* Create what's needed. */ |
| 2223 | if (need_entry & (NEED_GOT | NEED_GOTX)) |
| 2224 | { |
| 2225 | if (!got) |
| 2226 | { |
| 2227 | got = get_got (abfd, ia64_info); |
| 2228 | if (!got) |
| 2229 | return FALSE; |
| 2230 | } |
| 2231 | if (need_entry & NEED_GOT) |
| 2232 | dyn_i->want_got = 1; |
| 2233 | if (need_entry & NEED_GOTX) |
| 2234 | dyn_i->want_gotx = 1; |
| 2235 | } |
| 2236 | if (need_entry & NEED_FPTR) |
| 2237 | { |
| 2238 | /* Create the .opd section. */ |
| 2239 | if (!fptr) |
| 2240 | { |
| 2241 | fptr = get_fptr (abfd, info, ia64_info); |
| 2242 | if (!fptr) |
| 2243 | return FALSE; |
| 2244 | } |
| 2245 | dyn_i->want_fptr = 1; |
| 2246 | } |
| 2247 | if (need_entry & NEED_LTOFF_FPTR) |
| 2248 | dyn_i->want_ltoff_fptr = 1; |
| 2249 | if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) |
| 2250 | { |
| 2251 | if (!ia64_info->root.dynobj) |
| 2252 | ia64_info->root.dynobj = abfd; |
| 2253 | h->needs_plt = 1; |
| 2254 | dyn_i->want_plt = 1; |
| 2255 | } |
| 2256 | if (need_entry & NEED_FULL_PLT) |
| 2257 | dyn_i->want_plt2 = 1; |
| 2258 | if (need_entry & NEED_PLTOFF) |
| 2259 | { |
| 2260 | /* This is needed here, in case @pltoff is used in a non-shared |
| 2261 | link. */ |
| 2262 | if (!pltoff) |
| 2263 | { |
| 2264 | pltoff = get_pltoff (abfd, ia64_info); |
| 2265 | if (!pltoff) |
| 2266 | return FALSE; |
| 2267 | } |
| 2268 | |
| 2269 | dyn_i->want_pltoff = 1; |
| 2270 | } |
| 2271 | if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) |
| 2272 | { |
| 2273 | if (!srel) |
| 2274 | { |
| 2275 | srel = get_reloc_section (abfd, ia64_info, sec, TRUE); |
| 2276 | if (!srel) |
| 2277 | return FALSE; |
| 2278 | } |
| 2279 | if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type)) |
| 2280 | return FALSE; |
| 2281 | } |
| 2282 | } |
| 2283 | |
| 2284 | return TRUE; |
| 2285 | } |
| 2286 | |
| 2287 | /* For cleanliness, and potentially faster dynamic loading, allocate |
| 2288 | external GOT entries first. */ |
| 2289 | |
| 2290 | static bfd_boolean |
| 2291 | allocate_global_data_got (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2292 | void * data) |
| 2293 | { |
| 2294 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2295 | |
| 2296 | if ((dyn_i->want_got || dyn_i->want_gotx) |
| 2297 | && ! dyn_i->want_fptr |
| 2298 | && elf64_ia64_dynamic_symbol_p (dyn_i->h)) |
| 2299 | { |
| 2300 | /* GOT entry with FPTR is done by allocate_global_fptr_got. */ |
| 2301 | dyn_i->got_offset = x->ofs; |
| 2302 | x->ofs += 8; |
| 2303 | } |
| 2304 | return TRUE; |
| 2305 | } |
| 2306 | |
| 2307 | /* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ |
| 2308 | |
| 2309 | static bfd_boolean |
| 2310 | allocate_global_fptr_got (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2311 | void * data) |
| 2312 | { |
| 2313 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2314 | |
| 2315 | if (dyn_i->want_got |
| 2316 | && dyn_i->want_fptr |
| 2317 | && elf64_ia64_dynamic_symbol_p (dyn_i->h)) |
| 2318 | { |
| 2319 | dyn_i->got_offset = x->ofs; |
| 2320 | x->ofs += 8; |
| 2321 | } |
| 2322 | return TRUE; |
| 2323 | } |
| 2324 | |
| 2325 | /* Lastly, allocate all the GOT entries for local data. */ |
| 2326 | |
| 2327 | static bfd_boolean |
| 2328 | allocate_local_got (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2329 | void * data) |
| 2330 | { |
| 2331 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data; |
| 2332 | |
| 2333 | if ((dyn_i->want_got || dyn_i->want_gotx) |
| 2334 | && !elf64_ia64_dynamic_symbol_p (dyn_i->h)) |
| 2335 | { |
| 2336 | dyn_i->got_offset = x->ofs; |
| 2337 | x->ofs += 8; |
| 2338 | } |
| 2339 | return TRUE; |
| 2340 | } |
| 2341 | |
| 2342 | /* Allocate function descriptors. We can do these for every function |
| 2343 | in a main executable that is not exported. */ |
| 2344 | |
| 2345 | static bfd_boolean |
| 2346 | allocate_fptr (struct elf64_ia64_dyn_sym_info *dyn_i, void * data) |
| 2347 | { |
| 2348 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data; |
| 2349 | |
| 2350 | if (dyn_i->want_fptr) |
| 2351 | { |
| 2352 | struct elf_link_hash_entry *h = dyn_i->h; |
| 2353 | |
| 2354 | if (h) |
| 2355 | while (h->root.type == bfd_link_hash_indirect |
| 2356 | || h->root.type == bfd_link_hash_warning) |
| 2357 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2358 | |
| 2359 | if (h == NULL || !h->def_dynamic) |
| 2360 | { |
| 2361 | /* A non dynamic symbol. */ |
| 2362 | dyn_i->fptr_offset = x->ofs; |
| 2363 | x->ofs += 16; |
| 2364 | } |
| 2365 | else |
| 2366 | dyn_i->want_fptr = 0; |
| 2367 | } |
| 2368 | return TRUE; |
| 2369 | } |
| 2370 | |
| 2371 | /* Allocate all the minimal PLT entries. */ |
| 2372 | |
| 2373 | static bfd_boolean |
| 2374 | allocate_plt_entries (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2375 | void * data ATTRIBUTE_UNUSED) |
| 2376 | { |
| 2377 | if (dyn_i->want_plt) |
| 2378 | { |
| 2379 | struct elf_link_hash_entry *h = dyn_i->h; |
| 2380 | |
| 2381 | if (h) |
| 2382 | while (h->root.type == bfd_link_hash_indirect |
| 2383 | || h->root.type == bfd_link_hash_warning) |
| 2384 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2385 | |
| 2386 | /* ??? Versioned symbols seem to lose NEEDS_PLT. */ |
| 2387 | if (elf64_ia64_dynamic_symbol_p (h)) |
| 2388 | { |
| 2389 | dyn_i->want_pltoff = 1; |
| 2390 | } |
| 2391 | else |
| 2392 | { |
| 2393 | dyn_i->want_plt = 0; |
| 2394 | dyn_i->want_plt2 = 0; |
| 2395 | } |
| 2396 | } |
| 2397 | return TRUE; |
| 2398 | } |
| 2399 | |
| 2400 | /* Allocate all the full PLT entries. */ |
| 2401 | |
| 2402 | static bfd_boolean |
| 2403 | allocate_plt2_entries (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2404 | void * data) |
| 2405 | { |
| 2406 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2407 | |
| 2408 | if (dyn_i->want_plt2) |
| 2409 | { |
| 2410 | struct elf_link_hash_entry *h = dyn_i->h; |
| 2411 | bfd_size_type ofs = x->ofs; |
| 2412 | |
| 2413 | dyn_i->plt2_offset = ofs; |
| 2414 | x->ofs = ofs + PLT_FULL_ENTRY_SIZE; |
| 2415 | |
| 2416 | while (h->root.type == bfd_link_hash_indirect |
| 2417 | || h->root.type == bfd_link_hash_warning) |
| 2418 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2419 | dyn_i->h->plt.offset = ofs; |
| 2420 | } |
| 2421 | return TRUE; |
| 2422 | } |
| 2423 | |
| 2424 | /* Allocate all the PLTOFF entries requested by relocations and |
| 2425 | plt entries. We can't share space with allocated FPTR entries, |
| 2426 | because the latter are not necessarily addressable by the GP. |
| 2427 | ??? Relaxation might be able to determine that they are. */ |
| 2428 | |
| 2429 | static bfd_boolean |
| 2430 | allocate_pltoff_entries (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2431 | void * data) |
| 2432 | { |
| 2433 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2434 | |
| 2435 | if (dyn_i->want_pltoff) |
| 2436 | { |
| 2437 | dyn_i->pltoff_offset = x->ofs; |
| 2438 | x->ofs += 16; |
| 2439 | } |
| 2440 | return TRUE; |
| 2441 | } |
| 2442 | |
| 2443 | /* Allocate dynamic relocations for those symbols that turned out |
| 2444 | to be dynamic. */ |
| 2445 | |
| 2446 | static bfd_boolean |
| 2447 | allocate_dynrel_entries (struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2448 | void * data) |
| 2449 | { |
| 2450 | struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data; |
| 2451 | struct elf64_ia64_link_hash_table *ia64_info; |
| 2452 | struct elf64_ia64_dyn_reloc_entry *rent; |
| 2453 | bfd_boolean dynamic_symbol, shared, resolved_zero; |
| 2454 | struct elf64_ia64_link_hash_entry *h_ia64; |
| 2455 | |
| 2456 | ia64_info = elf64_ia64_hash_table (x->info); |
| 2457 | if (ia64_info == NULL) |
| 2458 | return FALSE; |
| 2459 | |
| 2460 | /* Note that this can't be used in relation to FPTR relocs below. */ |
| 2461 | dynamic_symbol = elf64_ia64_dynamic_symbol_p (dyn_i->h); |
| 2462 | |
| 2463 | shared = bfd_link_pic (x->info); |
| 2464 | resolved_zero = (dyn_i->h |
| 2465 | && ELF_ST_VISIBILITY (dyn_i->h->other) |
| 2466 | && dyn_i->h->root.type == bfd_link_hash_undefweak); |
| 2467 | |
| 2468 | /* Take care of the GOT and PLT relocations. */ |
| 2469 | |
| 2470 | if ((!resolved_zero |
| 2471 | && (dynamic_symbol || shared) |
| 2472 | && (dyn_i->want_got || dyn_i->want_gotx)) |
| 2473 | || (dyn_i->want_ltoff_fptr |
| 2474 | && dyn_i->h |
| 2475 | && dyn_i->h->def_dynamic)) |
| 2476 | { |
| 2477 | /* VMS: FIX64. */ |
| 2478 | if (dyn_i->h != NULL && dyn_i->h->def_dynamic) |
| 2479 | { |
| 2480 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; |
| 2481 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += |
| 2482 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2483 | ia64_info->fixups_sec->size += |
| 2484 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2485 | } |
| 2486 | } |
| 2487 | |
| 2488 | if (ia64_info->rel_fptr_sec && dyn_i->want_fptr) |
| 2489 | { |
| 2490 | /* VMS: only image reloc. */ |
| 2491 | if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak) |
| 2492 | ia64_info->rel_fptr_sec->size += sizeof (Elf64_External_Rela); |
| 2493 | } |
| 2494 | |
| 2495 | if (!resolved_zero && dyn_i->want_pltoff) |
| 2496 | { |
| 2497 | /* VMS: FIXFD. */ |
| 2498 | if (dyn_i->h != NULL && dyn_i->h->def_dynamic) |
| 2499 | { |
| 2500 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; |
| 2501 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += |
| 2502 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2503 | ia64_info->fixups_sec->size += |
| 2504 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2505 | } |
| 2506 | } |
| 2507 | |
| 2508 | /* Take care of the normal data relocations. */ |
| 2509 | |
| 2510 | for (rent = dyn_i->reloc_entries; rent; rent = rent->next) |
| 2511 | { |
| 2512 | int count = rent->count; |
| 2513 | |
| 2514 | switch (rent->type) |
| 2515 | { |
| 2516 | case R_IA64_FPTR32LSB: |
| 2517 | case R_IA64_FPTR64LSB: |
| 2518 | /* Allocate one iff !want_fptr and not PIE, which by this point |
| 2519 | will be true only if we're actually allocating one statically |
| 2520 | in the main executable. Position independent executables |
| 2521 | need a relative reloc. */ |
| 2522 | if (dyn_i->want_fptr && !bfd_link_pie (x->info)) |
| 2523 | continue; |
| 2524 | break; |
| 2525 | case R_IA64_PCREL32LSB: |
| 2526 | case R_IA64_PCREL64LSB: |
| 2527 | if (!dynamic_symbol) |
| 2528 | continue; |
| 2529 | break; |
| 2530 | case R_IA64_DIR32LSB: |
| 2531 | case R_IA64_DIR64LSB: |
| 2532 | if (!dynamic_symbol && !shared) |
| 2533 | continue; |
| 2534 | break; |
| 2535 | case R_IA64_IPLTLSB: |
| 2536 | if (!dynamic_symbol && !shared) |
| 2537 | continue; |
| 2538 | /* Use two REL relocations for IPLT relocations |
| 2539 | against local symbols. */ |
| 2540 | if (!dynamic_symbol) |
| 2541 | count *= 2; |
| 2542 | break; |
| 2543 | case R_IA64_DTPREL32LSB: |
| 2544 | case R_IA64_TPREL64LSB: |
| 2545 | case R_IA64_DTPREL64LSB: |
| 2546 | case R_IA64_DTPMOD64LSB: |
| 2547 | break; |
| 2548 | default: |
| 2549 | abort (); |
| 2550 | } |
| 2551 | |
| 2552 | /* Add a fixup. */ |
| 2553 | if (!dynamic_symbol) |
| 2554 | abort (); |
| 2555 | |
| 2556 | h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h; |
| 2557 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += |
| 2558 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2559 | ia64_info->fixups_sec->size += |
| 2560 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2561 | } |
| 2562 | |
| 2563 | return TRUE; |
| 2564 | } |
| 2565 | |
| 2566 | static bfd_boolean |
| 2567 | elf64_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 2568 | struct elf_link_hash_entry *h) |
| 2569 | { |
| 2570 | /* ??? Undefined symbols with PLT entries should be re-defined |
| 2571 | to be the PLT entry. */ |
| 2572 | |
| 2573 | /* If this is a weak symbol, and there is a real definition, the |
| 2574 | processor independent code will have arranged for us to see the |
| 2575 | real definition first, and we can just use the same value. */ |
| 2576 | if (h->u.weakdef != NULL) |
| 2577 | { |
| 2578 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 2579 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 2580 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 2581 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 2582 | return TRUE; |
| 2583 | } |
| 2584 | |
| 2585 | /* If this is a reference to a symbol defined by a dynamic object which |
| 2586 | is not a function, we might allocate the symbol in our .dynbss section |
| 2587 | and allocate a COPY dynamic relocation. |
| 2588 | |
| 2589 | But IA-64 code is canonically PIC, so as a rule we can avoid this sort |
| 2590 | of hackery. */ |
| 2591 | |
| 2592 | return TRUE; |
| 2593 | } |
| 2594 | |
| 2595 | static bfd_boolean |
| 2596 | elf64_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2597 | struct bfd_link_info *info) |
| 2598 | { |
| 2599 | struct elf64_ia64_allocate_data data; |
| 2600 | struct elf64_ia64_link_hash_table *ia64_info; |
| 2601 | asection *sec; |
| 2602 | bfd *dynobj; |
| 2603 | struct elf_link_hash_table *hash_table; |
| 2604 | |
| 2605 | hash_table = elf_hash_table (info); |
| 2606 | dynobj = hash_table->dynobj; |
| 2607 | ia64_info = elf64_ia64_hash_table (info); |
| 2608 | if (ia64_info == NULL) |
| 2609 | return FALSE; |
| 2610 | BFD_ASSERT(dynobj != NULL); |
| 2611 | data.info = info; |
| 2612 | |
| 2613 | /* Allocate the GOT entries. */ |
| 2614 | |
| 2615 | if (ia64_info->root.sgot) |
| 2616 | { |
| 2617 | data.ofs = 0; |
| 2618 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); |
| 2619 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); |
| 2620 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); |
| 2621 | ia64_info->root.sgot->size = data.ofs; |
| 2622 | } |
| 2623 | |
| 2624 | /* Allocate the FPTR entries. */ |
| 2625 | |
| 2626 | if (ia64_info->fptr_sec) |
| 2627 | { |
| 2628 | data.ofs = 0; |
| 2629 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); |
| 2630 | ia64_info->fptr_sec->size = data.ofs; |
| 2631 | } |
| 2632 | |
| 2633 | /* Now that we've seen all of the input files, we can decide which |
| 2634 | symbols need plt entries. Allocate the minimal PLT entries first. |
| 2635 | We do this even though dynamic_sections_created may be FALSE, because |
| 2636 | this has the side-effect of clearing want_plt and want_plt2. */ |
| 2637 | |
| 2638 | data.ofs = 0; |
| 2639 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); |
| 2640 | |
| 2641 | /* Align the pointer for the plt2 entries. */ |
| 2642 | data.ofs = (data.ofs + 31) & (bfd_vma) -32; |
| 2643 | |
| 2644 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); |
| 2645 | if (data.ofs != 0 || ia64_info->root.dynamic_sections_created) |
| 2646 | { |
| 2647 | /* FIXME: we always reserve the memory for dynamic linker even if |
| 2648 | there are no PLT entries since dynamic linker may assume the |
| 2649 | reserved memory always exists. */ |
| 2650 | |
| 2651 | BFD_ASSERT (ia64_info->root.dynamic_sections_created); |
| 2652 | |
| 2653 | ia64_info->root.splt->size = data.ofs; |
| 2654 | } |
| 2655 | |
| 2656 | /* Allocate the PLTOFF entries. */ |
| 2657 | |
| 2658 | if (ia64_info->pltoff_sec) |
| 2659 | { |
| 2660 | data.ofs = 0; |
| 2661 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); |
| 2662 | ia64_info->pltoff_sec->size = data.ofs; |
| 2663 | } |
| 2664 | |
| 2665 | if (ia64_info->root.dynamic_sections_created) |
| 2666 | { |
| 2667 | /* Allocate space for the dynamic relocations that turned out to be |
| 2668 | required. */ |
| 2669 | elf64_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); |
| 2670 | } |
| 2671 | |
| 2672 | /* We have now determined the sizes of the various dynamic sections. |
| 2673 | Allocate memory for them. */ |
| 2674 | for (sec = dynobj->sections; sec != NULL; sec = sec->next) |
| 2675 | { |
| 2676 | bfd_boolean strip; |
| 2677 | |
| 2678 | if (!(sec->flags & SEC_LINKER_CREATED)) |
| 2679 | continue; |
| 2680 | |
| 2681 | /* If we don't need this section, strip it from the output file. |
| 2682 | There were several sections primarily related to dynamic |
| 2683 | linking that must be create before the linker maps input |
| 2684 | sections to output sections. The linker does that before |
| 2685 | bfd_elf_size_dynamic_sections is called, and it is that |
| 2686 | function which decides whether anything needs to go into |
| 2687 | these sections. */ |
| 2688 | |
| 2689 | strip = (sec->size == 0); |
| 2690 | |
| 2691 | if (sec == ia64_info->root.sgot) |
| 2692 | strip = FALSE; |
| 2693 | else if (sec == ia64_info->root.srelgot) |
| 2694 | { |
| 2695 | if (strip) |
| 2696 | ia64_info->root.srelgot = NULL; |
| 2697 | else |
| 2698 | /* We use the reloc_count field as a counter if we need to |
| 2699 | copy relocs into the output file. */ |
| 2700 | sec->reloc_count = 0; |
| 2701 | } |
| 2702 | else if (sec == ia64_info->fptr_sec) |
| 2703 | { |
| 2704 | if (strip) |
| 2705 | ia64_info->fptr_sec = NULL; |
| 2706 | } |
| 2707 | else if (sec == ia64_info->rel_fptr_sec) |
| 2708 | { |
| 2709 | if (strip) |
| 2710 | ia64_info->rel_fptr_sec = NULL; |
| 2711 | else |
| 2712 | /* We use the reloc_count field as a counter if we need to |
| 2713 | copy relocs into the output file. */ |
| 2714 | sec->reloc_count = 0; |
| 2715 | } |
| 2716 | else if (sec == ia64_info->root.splt) |
| 2717 | { |
| 2718 | if (strip) |
| 2719 | ia64_info->root.splt = NULL; |
| 2720 | } |
| 2721 | else if (sec == ia64_info->pltoff_sec) |
| 2722 | { |
| 2723 | if (strip) |
| 2724 | ia64_info->pltoff_sec = NULL; |
| 2725 | } |
| 2726 | else if (sec == ia64_info->fixups_sec) |
| 2727 | { |
| 2728 | if (strip) |
| 2729 | ia64_info->fixups_sec = NULL; |
| 2730 | } |
| 2731 | else if (sec == ia64_info->transfer_sec) |
| 2732 | { |
| 2733 | ; |
| 2734 | } |
| 2735 | else |
| 2736 | { |
| 2737 | const char *name; |
| 2738 | |
| 2739 | /* It's OK to base decisions on the section name, because none |
| 2740 | of the dynobj section names depend upon the input files. */ |
| 2741 | name = bfd_get_section_name (dynobj, sec); |
| 2742 | |
| 2743 | if (strcmp (name, ".got.plt") == 0) |
| 2744 | strip = FALSE; |
| 2745 | else if (CONST_STRNEQ (name, ".rel")) |
| 2746 | { |
| 2747 | if (!strip) |
| 2748 | { |
| 2749 | /* We use the reloc_count field as a counter if we need to |
| 2750 | copy relocs into the output file. */ |
| 2751 | sec->reloc_count = 0; |
| 2752 | } |
| 2753 | } |
| 2754 | else |
| 2755 | continue; |
| 2756 | } |
| 2757 | |
| 2758 | if (strip) |
| 2759 | sec->flags |= SEC_EXCLUDE; |
| 2760 | else |
| 2761 | { |
| 2762 | /* Allocate memory for the section contents. */ |
| 2763 | sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size); |
| 2764 | if (sec->contents == NULL && sec->size != 0) |
| 2765 | return FALSE; |
| 2766 | } |
| 2767 | } |
| 2768 | |
| 2769 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2770 | { |
| 2771 | bfd *abfd; |
| 2772 | asection *dynsec; |
| 2773 | asection *dynstrsec; |
| 2774 | Elf_Internal_Dyn dyn; |
| 2775 | const struct elf_backend_data *bed; |
| 2776 | unsigned int shl_num = 0; |
| 2777 | bfd_vma fixups_off = 0; |
| 2778 | bfd_vma strdyn_off; |
| 2779 | unsigned int time_hi, time_lo; |
| 2780 | |
| 2781 | /* The .dynamic section must exist and be empty. */ |
| 2782 | dynsec = bfd_get_linker_section (hash_table->dynobj, ".dynamic"); |
| 2783 | BFD_ASSERT (dynsec != NULL); |
| 2784 | BFD_ASSERT (dynsec->size == 0); |
| 2785 | |
| 2786 | dynstrsec = bfd_get_linker_section (hash_table->dynobj, ".vmsdynstr"); |
| 2787 | BFD_ASSERT (dynstrsec != NULL); |
| 2788 | BFD_ASSERT (dynstrsec->size == 0); |
| 2789 | dynstrsec->size = 1; /* Initial blank. */ |
| 2790 | |
| 2791 | /* Ident + link time. */ |
| 2792 | vms_get_time (&time_hi, &time_lo); |
| 2793 | |
| 2794 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_IDENT, 0)) |
| 2795 | return FALSE; |
| 2796 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LINKTIME, |
| 2797 | (((bfd_uint64_t)time_hi) << 32) |
| 2798 | + time_lo)) |
| 2799 | return FALSE; |
| 2800 | |
| 2801 | /* Strtab. */ |
| 2802 | strdyn_off = dynsec->size; |
| 2803 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_STRTAB_OFFSET, 0)) |
| 2804 | return FALSE; |
| 2805 | if (!_bfd_elf_add_dynamic_entry (info, DT_STRSZ, 0)) |
| 2806 | return FALSE; |
| 2807 | |
| 2808 | /* PLTGOT */ |
| 2809 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_SEG, 0)) |
| 2810 | return FALSE; |
| 2811 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_OFFSET, 0)) |
| 2812 | return FALSE; |
| 2813 | |
| 2814 | /* Misc. */ |
| 2815 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FPMODE, 0x9800000)) |
| 2816 | return FALSE; |
| 2817 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LNKFLAGS, |
| 2818 | VMS_LF_IMGSTA | VMS_LF_MAIN)) |
| 2819 | return FALSE; |
| 2820 | |
| 2821 | /* Add entries for shared libraries. */ |
| 2822 | for (abfd = info->input_bfds; abfd; abfd = abfd->link.next) |
| 2823 | { |
| 2824 | char *soname; |
| 2825 | size_t soname_len; |
| 2826 | bfd_size_type strindex; |
| 2827 | bfd_byte *newcontents; |
| 2828 | bfd_vma fixups_shl_off; |
| 2829 | |
| 2830 | if (!(abfd->flags & DYNAMIC)) |
| 2831 | continue; |
| 2832 | BFD_ASSERT (abfd->xvec == output_bfd->xvec); |
| 2833 | |
| 2834 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_NEEDED_IDENT, |
| 2835 | elf_ia64_vms_ident (abfd))) |
| 2836 | return FALSE; |
| 2837 | |
| 2838 | soname = vms_get_module_name (abfd->filename, TRUE); |
| 2839 | if (soname == NULL) |
| 2840 | return FALSE; |
| 2841 | strindex = dynstrsec->size; |
| 2842 | soname_len = strlen (soname) + 1; |
| 2843 | newcontents = (bfd_byte *) bfd_realloc (dynstrsec->contents, |
| 2844 | strindex + soname_len); |
| 2845 | if (newcontents == NULL) |
| 2846 | return FALSE; |
| 2847 | memcpy (newcontents + strindex, soname, soname_len); |
| 2848 | dynstrsec->size += soname_len; |
| 2849 | dynstrsec->contents = newcontents; |
| 2850 | |
| 2851 | if (!_bfd_elf_add_dynamic_entry (info, DT_NEEDED, strindex)) |
| 2852 | return FALSE; |
| 2853 | |
| 2854 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_NEEDED, |
| 2855 | shl_num)) |
| 2856 | return FALSE; |
| 2857 | shl_num++; |
| 2858 | |
| 2859 | /* The fixups_off was in fact containing the size of the fixup |
| 2860 | section. Remap into the offset. */ |
| 2861 | fixups_shl_off = elf_ia64_vms_tdata (abfd)->fixups_off; |
| 2862 | elf_ia64_vms_tdata (abfd)->fixups_off = fixups_off; |
| 2863 | |
| 2864 | if (!_bfd_elf_add_dynamic_entry |
| 2865 | (info, DT_IA_64_VMS_FIXUP_RELA_CNT, |
| 2866 | fixups_shl_off / sizeof (Elf64_External_VMS_IMAGE_FIXUP))) |
| 2867 | return FALSE; |
| 2868 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_RELA_OFF, |
| 2869 | fixups_off)) |
| 2870 | return FALSE; |
| 2871 | fixups_off += fixups_shl_off; |
| 2872 | } |
| 2873 | |
| 2874 | /* Unwind. */ |
| 2875 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWINDSZ, 0)) |
| 2876 | return FALSE; |
| 2877 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_CODSEG, 0)) |
| 2878 | return FALSE; |
| 2879 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_INFOSEG, 0)) |
| 2880 | return FALSE; |
| 2881 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_OFFSET, 0)) |
| 2882 | return FALSE; |
| 2883 | if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_SEG, 0)) |
| 2884 | return FALSE; |
| 2885 | |
| 2886 | if (!_bfd_elf_add_dynamic_entry (info, DT_NULL, 0xdead)) |
| 2887 | return FALSE; |
| 2888 | |
| 2889 | /* Fix the strtab entries. */ |
| 2890 | bed = get_elf_backend_data (hash_table->dynobj); |
| 2891 | |
| 2892 | if (dynstrsec->size > 1) |
| 2893 | dynstrsec->contents[0] = 0; |
| 2894 | else |
| 2895 | dynstrsec->size = 0; |
| 2896 | |
| 2897 | /* Note: one 'spare' (ie DT_NULL) entry is added by |
| 2898 | bfd_elf_size_dynsym_hash_dynstr. */ |
| 2899 | dyn.d_tag = DT_IA_64_VMS_STRTAB_OFFSET; |
| 2900 | dyn.d_un.d_val = dynsec->size /* + sizeof (Elf64_External_Dyn) */; |
| 2901 | bed->s->swap_dyn_out (hash_table->dynobj, &dyn, |
| 2902 | dynsec->contents + strdyn_off); |
| 2903 | |
| 2904 | dyn.d_tag = DT_STRSZ; |
| 2905 | dyn.d_un.d_val = dynstrsec->size; |
| 2906 | bed->s->swap_dyn_out (hash_table->dynobj, &dyn, |
| 2907 | dynsec->contents + strdyn_off + bed->s->sizeof_dyn); |
| 2908 | |
| 2909 | elf_ia64_vms_tdata (output_bfd)->needed_count = shl_num; |
| 2910 | |
| 2911 | /* Note section. */ |
| 2912 | if (!create_ia64_vms_notes (output_bfd, info, time_hi, time_lo)) |
| 2913 | return FALSE; |
| 2914 | } |
| 2915 | |
| 2916 | /* ??? Perhaps force __gp local. */ |
| 2917 | |
| 2918 | return TRUE; |
| 2919 | } |
| 2920 | |
| 2921 | static void |
| 2922 | elf64_ia64_install_fixup (bfd *output_bfd, |
| 2923 | struct elf64_ia64_link_hash_table *ia64_info, |
| 2924 | struct elf_link_hash_entry *h, |
| 2925 | unsigned int type, asection *sec, bfd_vma offset, |
| 2926 | bfd_vma addend) |
| 2927 | { |
| 2928 | asection *relsec; |
| 2929 | Elf64_External_VMS_IMAGE_FIXUP *fixup; |
| 2930 | struct elf64_ia64_link_hash_entry *h_ia64; |
| 2931 | bfd_vma fixoff; |
| 2932 | Elf_Internal_Phdr *phdr; |
| 2933 | |
| 2934 | if (h == NULL || !h->def_dynamic) |
| 2935 | abort (); |
| 2936 | |
| 2937 | h_ia64 = (struct elf64_ia64_link_hash_entry *) h; |
| 2938 | fixoff = elf_ia64_vms_tdata (h_ia64->shl)->fixups_off; |
| 2939 | elf_ia64_vms_tdata (h_ia64->shl)->fixups_off += |
| 2940 | sizeof (Elf64_External_VMS_IMAGE_FIXUP); |
| 2941 | relsec = ia64_info->fixups_sec; |
| 2942 | |
| 2943 | fixup = (Elf64_External_VMS_IMAGE_FIXUP *)(relsec->contents + fixoff); |
| 2944 | offset += sec->output_section->vma + sec->output_offset; |
| 2945 | |
| 2946 | /* FIXME: this is slow. We should cache the last one used, or create a |
| 2947 | map. */ |
| 2948 | phdr = _bfd_elf_find_segment_containing_section |
| 2949 | (output_bfd, sec->output_section); |
| 2950 | BFD_ASSERT (phdr != NULL); |
| 2951 | |
| 2952 | bfd_putl64 (offset - phdr->p_vaddr, fixup->fixup_offset); |
| 2953 | bfd_putl32 (type, fixup->type); |
| 2954 | bfd_putl32 (phdr - elf_tdata (output_bfd)->phdr, fixup->fixup_seg); |
| 2955 | bfd_putl64 (addend, fixup->addend); |
| 2956 | bfd_putl32 (h->root.u.def.value, fixup->symvec_index); |
| 2957 | bfd_putl32 (2, fixup->data_type); |
| 2958 | } |
| 2959 | |
| 2960 | /* Store an entry for target address TARGET_ADDR in the linkage table |
| 2961 | and return the gp-relative address of the linkage table entry. */ |
| 2962 | |
| 2963 | static bfd_vma |
| 2964 | set_got_entry (bfd *abfd, struct bfd_link_info *info, |
| 2965 | struct elf64_ia64_dyn_sym_info *dyn_i, |
| 2966 | bfd_vma addend, bfd_vma value, unsigned int dyn_r_type) |
| 2967 | { |
| 2968 | struct elf64_ia64_link_hash_table *ia64_info; |
| 2969 | asection *got_sec; |
| 2970 | bfd_boolean done; |
| 2971 | bfd_vma got_offset; |
| 2972 | |
| 2973 | ia64_info = elf64_ia64_hash_table (info); |
| 2974 | if (ia64_info == NULL) |
| 2975 | return 0; |
| 2976 | |
| 2977 | got_sec = ia64_info->root.sgot; |
| 2978 | |
| 2979 | switch (dyn_r_type) |
| 2980 | { |
| 2981 | case R_IA64_TPREL64LSB: |
| 2982 | case R_IA64_DTPMOD64LSB: |
| 2983 | case R_IA64_DTPREL32LSB: |
| 2984 | case R_IA64_DTPREL64LSB: |
| 2985 | abort (); |
| 2986 | break; |
| 2987 | default: |
| 2988 | done = dyn_i->got_done; |
| 2989 | dyn_i->got_done = TRUE; |
| 2990 | got_offset = dyn_i->got_offset; |
| 2991 | break; |
| 2992 | } |
| 2993 | |
| 2994 | BFD_ASSERT ((got_offset & 7) == 0); |
| 2995 | |
| 2996 | if (! done) |
| 2997 | { |
| 2998 | /* Store the target address in the linkage table entry. */ |
| 2999 | bfd_put_64 (abfd, value, got_sec->contents + got_offset); |
| 3000 | |
| 3001 | /* Install a dynamic relocation if needed. */ |
| 3002 | if (((bfd_link_pic (info) |
| 3003 | && (!dyn_i->h |
| 3004 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
| 3005 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
| 3006 | || elf64_ia64_dynamic_symbol_p (dyn_i->h)) |
| 3007 | && (!dyn_i->want_ltoff_fptr |
| 3008 | || !bfd_link_pie (info) |
| 3009 | || !dyn_i->h |
| 3010 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
| 3011 | { |
| 3012 | if (!dyn_i->h || !dyn_i->h->def_dynamic) |
| 3013 | { |
| 3014 | dyn_r_type = R_IA64_REL64LSB; |
| 3015 | addend = value; |
| 3016 | } |
| 3017 | |
| 3018 | /* VMS: install a FIX32 or FIX64. */ |
| 3019 | switch (dyn_r_type) |
| 3020 | { |
| 3021 | case R_IA64_DIR32LSB: |
| 3022 | case R_IA64_FPTR32LSB: |
| 3023 | dyn_r_type = R_IA64_VMS_FIX32; |
| 3024 | break; |
| 3025 | case R_IA64_DIR64LSB: |
| 3026 | case R_IA64_FPTR64LSB: |
| 3027 | dyn_r_type = R_IA64_VMS_FIX64; |
| 3028 | break; |
| 3029 | default: |
| 3030 | BFD_ASSERT (FALSE); |
| 3031 | break; |
| 3032 | } |
| 3033 | elf64_ia64_install_fixup |
| 3034 | (info->output_bfd, ia64_info, dyn_i->h, |
| 3035 | dyn_r_type, got_sec, got_offset, addend); |
| 3036 | } |
| 3037 | } |
| 3038 | |
| 3039 | /* Return the address of the linkage table entry. */ |
| 3040 | value = (got_sec->output_section->vma |
| 3041 | + got_sec->output_offset |
| 3042 | + got_offset); |
| 3043 | |
| 3044 | return value; |
| 3045 | } |
| 3046 | |
| 3047 | /* Fill in a function descriptor consisting of the function's code |
| 3048 | address and its global pointer. Return the descriptor's address. */ |
| 3049 | |
| 3050 | static bfd_vma |
| 3051 | set_fptr_entry (bfd *abfd, struct bfd_link_info *info, |
| 3052 | struct elf64_ia64_dyn_sym_info *dyn_i, |
| 3053 | bfd_vma value) |
| 3054 | { |
| 3055 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3056 | asection *fptr_sec; |
| 3057 | |
| 3058 | ia64_info = elf64_ia64_hash_table (info); |
| 3059 | if (ia64_info == NULL) |
| 3060 | return 0; |
| 3061 | |
| 3062 | fptr_sec = ia64_info->fptr_sec; |
| 3063 | |
| 3064 | if (!dyn_i->fptr_done) |
| 3065 | { |
| 3066 | dyn_i->fptr_done = 1; |
| 3067 | |
| 3068 | /* Fill in the function descriptor. */ |
| 3069 | bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); |
| 3070 | bfd_put_64 (abfd, _bfd_get_gp_value (abfd), |
| 3071 | fptr_sec->contents + dyn_i->fptr_offset + 8); |
| 3072 | } |
| 3073 | |
| 3074 | /* Return the descriptor's address. */ |
| 3075 | value = (fptr_sec->output_section->vma |
| 3076 | + fptr_sec->output_offset |
| 3077 | + dyn_i->fptr_offset); |
| 3078 | |
| 3079 | return value; |
| 3080 | } |
| 3081 | |
| 3082 | /* Fill in a PLTOFF entry consisting of the function's code address |
| 3083 | and its global pointer. Return the descriptor's address. */ |
| 3084 | |
| 3085 | static bfd_vma |
| 3086 | set_pltoff_entry (bfd *abfd, struct bfd_link_info *info, |
| 3087 | struct elf64_ia64_dyn_sym_info *dyn_i, |
| 3088 | bfd_vma value, bfd_boolean is_plt) |
| 3089 | { |
| 3090 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3091 | asection *pltoff_sec; |
| 3092 | |
| 3093 | ia64_info = elf64_ia64_hash_table (info); |
| 3094 | if (ia64_info == NULL) |
| 3095 | return 0; |
| 3096 | |
| 3097 | pltoff_sec = ia64_info->pltoff_sec; |
| 3098 | |
| 3099 | /* Don't do anything if this symbol uses a real PLT entry. In |
| 3100 | that case, we'll fill this in during finish_dynamic_symbol. */ |
| 3101 | if ((! dyn_i->want_plt || is_plt) |
| 3102 | && !dyn_i->pltoff_done) |
| 3103 | { |
| 3104 | bfd_vma gp = _bfd_get_gp_value (abfd); |
| 3105 | |
| 3106 | /* Fill in the function descriptor. */ |
| 3107 | bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); |
| 3108 | bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8); |
| 3109 | |
| 3110 | /* Install dynamic relocations if needed. */ |
| 3111 | if (!is_plt |
| 3112 | && bfd_link_pic (info) |
| 3113 | && (!dyn_i->h |
| 3114 | || ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT |
| 3115 | || dyn_i->h->root.type != bfd_link_hash_undefweak)) |
| 3116 | { |
| 3117 | /* VMS: */ |
| 3118 | abort (); |
| 3119 | } |
| 3120 | |
| 3121 | dyn_i->pltoff_done = 1; |
| 3122 | } |
| 3123 | |
| 3124 | /* Return the descriptor's address. */ |
| 3125 | value = (pltoff_sec->output_section->vma |
| 3126 | + pltoff_sec->output_offset |
| 3127 | + dyn_i->pltoff_offset); |
| 3128 | |
| 3129 | return value; |
| 3130 | } |
| 3131 | |
| 3132 | /* Called through qsort to sort the .IA_64.unwind section during a |
| 3133 | non-relocatable link. Set elf64_ia64_unwind_entry_compare_bfd |
| 3134 | to the output bfd so we can do proper endianness frobbing. */ |
| 3135 | |
| 3136 | static bfd *elf64_ia64_unwind_entry_compare_bfd; |
| 3137 | |
| 3138 | static int |
| 3139 | elf64_ia64_unwind_entry_compare (const void * a, const void * b) |
| 3140 | { |
| 3141 | bfd_vma av, bv; |
| 3142 | |
| 3143 | av = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, a); |
| 3144 | bv = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, b); |
| 3145 | |
| 3146 | return (av < bv ? -1 : av > bv ? 1 : 0); |
| 3147 | } |
| 3148 | |
| 3149 | /* Make sure we've got ourselves a nice fat __gp value. */ |
| 3150 | static bfd_boolean |
| 3151 | elf64_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final) |
| 3152 | { |
| 3153 | bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; |
| 3154 | bfd_vma min_short_vma = min_vma, max_short_vma = 0; |
| 3155 | struct elf_link_hash_entry *gp; |
| 3156 | bfd_vma gp_val; |
| 3157 | asection *os; |
| 3158 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3159 | |
| 3160 | ia64_info = elf64_ia64_hash_table (info); |
| 3161 | if (ia64_info == NULL) |
| 3162 | return FALSE; |
| 3163 | |
| 3164 | /* Find the min and max vma of all sections marked short. Also collect |
| 3165 | min and max vma of any type, for use in selecting a nice gp. */ |
| 3166 | for (os = abfd->sections; os ; os = os->next) |
| 3167 | { |
| 3168 | bfd_vma lo, hi; |
| 3169 | |
| 3170 | if ((os->flags & SEC_ALLOC) == 0) |
| 3171 | continue; |
| 3172 | |
| 3173 | lo = os->vma; |
| 3174 | /* When this function is called from elfNN_ia64_final_link |
| 3175 | the correct value to use is os->size. When called from |
| 3176 | elfNN_ia64_relax_section we are in the middle of section |
| 3177 | sizing; some sections will already have os->size set, others |
| 3178 | will have os->size zero and os->rawsize the previous size. */ |
| 3179 | hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size); |
| 3180 | if (hi < lo) |
| 3181 | hi = (bfd_vma) -1; |
| 3182 | |
| 3183 | if (min_vma > lo) |
| 3184 | min_vma = lo; |
| 3185 | if (max_vma < hi) |
| 3186 | max_vma = hi; |
| 3187 | if (os->flags & SEC_SMALL_DATA) |
| 3188 | { |
| 3189 | if (min_short_vma > lo) |
| 3190 | min_short_vma = lo; |
| 3191 | if (max_short_vma < hi) |
| 3192 | max_short_vma = hi; |
| 3193 | } |
| 3194 | } |
| 3195 | |
| 3196 | if (ia64_info->min_short_sec) |
| 3197 | { |
| 3198 | if (min_short_vma |
| 3199 | > (ia64_info->min_short_sec->vma |
| 3200 | + ia64_info->min_short_offset)) |
| 3201 | min_short_vma = (ia64_info->min_short_sec->vma |
| 3202 | + ia64_info->min_short_offset); |
| 3203 | if (max_short_vma |
| 3204 | < (ia64_info->max_short_sec->vma |
| 3205 | + ia64_info->max_short_offset)) |
| 3206 | max_short_vma = (ia64_info->max_short_sec->vma |
| 3207 | + ia64_info->max_short_offset); |
| 3208 | } |
| 3209 | |
| 3210 | /* See if the user wants to force a value. */ |
| 3211 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, |
| 3212 | FALSE, FALSE); |
| 3213 | |
| 3214 | if (gp |
| 3215 | && (gp->root.type == bfd_link_hash_defined |
| 3216 | || gp->root.type == bfd_link_hash_defweak)) |
| 3217 | { |
| 3218 | asection *gp_sec = gp->root.u.def.section; |
| 3219 | gp_val = (gp->root.u.def.value |
| 3220 | + gp_sec->output_section->vma |
| 3221 | + gp_sec->output_offset); |
| 3222 | } |
| 3223 | else |
| 3224 | { |
| 3225 | /* Pick a sensible value. */ |
| 3226 | |
| 3227 | if (ia64_info->min_short_sec) |
| 3228 | { |
| 3229 | bfd_vma short_range = max_short_vma - min_short_vma; |
| 3230 | |
| 3231 | /* If min_short_sec is set, pick one in the middle bewteen |
| 3232 | min_short_vma and max_short_vma. */ |
| 3233 | if (short_range >= 0x400000) |
| 3234 | goto overflow; |
| 3235 | gp_val = min_short_vma + short_range / 2; |
| 3236 | } |
| 3237 | else |
| 3238 | { |
| 3239 | asection *got_sec = ia64_info->root.sgot; |
| 3240 | |
| 3241 | /* Start with just the address of the .got. */ |
| 3242 | if (got_sec) |
| 3243 | gp_val = got_sec->output_section->vma; |
| 3244 | else if (max_short_vma != 0) |
| 3245 | gp_val = min_short_vma; |
| 3246 | else if (max_vma - min_vma < 0x200000) |
| 3247 | gp_val = min_vma; |
| 3248 | else |
| 3249 | gp_val = max_vma - 0x200000 + 8; |
| 3250 | } |
| 3251 | |
| 3252 | /* If it is possible to address the entire image, but we |
| 3253 | don't with the choice above, adjust. */ |
| 3254 | if (max_vma - min_vma < 0x400000 |
| 3255 | && (max_vma - gp_val >= 0x200000 |
| 3256 | || gp_val - min_vma > 0x200000)) |
| 3257 | gp_val = min_vma + 0x200000; |
| 3258 | else if (max_short_vma != 0) |
| 3259 | { |
| 3260 | /* If we don't cover all the short data, adjust. */ |
| 3261 | if (max_short_vma - gp_val >= 0x200000) |
| 3262 | gp_val = min_short_vma + 0x200000; |
| 3263 | |
| 3264 | /* If we're addressing stuff past the end, adjust back. */ |
| 3265 | if (gp_val > max_vma) |
| 3266 | gp_val = max_vma - 0x200000 + 8; |
| 3267 | } |
| 3268 | } |
| 3269 | |
| 3270 | /* Validate whether all SHF_IA_64_SHORT sections are within |
| 3271 | range of the chosen GP. */ |
| 3272 | |
| 3273 | if (max_short_vma != 0) |
| 3274 | { |
| 3275 | if (max_short_vma - min_short_vma >= 0x400000) |
| 3276 | { |
| 3277 | overflow: |
| 3278 | _bfd_error_handler |
| 3279 | (_("%s: short data segment overflowed (0x%lx >= 0x400000)"), |
| 3280 | bfd_get_filename (abfd), |
| 3281 | (unsigned long) (max_short_vma - min_short_vma)); |
| 3282 | return FALSE; |
| 3283 | } |
| 3284 | else if ((gp_val > min_short_vma |
| 3285 | && gp_val - min_short_vma > 0x200000) |
| 3286 | || (gp_val < max_short_vma |
| 3287 | && max_short_vma - gp_val >= 0x200000)) |
| 3288 | { |
| 3289 | _bfd_error_handler |
| 3290 | (_("%s: __gp does not cover short data segment"), |
| 3291 | bfd_get_filename (abfd)); |
| 3292 | return FALSE; |
| 3293 | } |
| 3294 | } |
| 3295 | |
| 3296 | _bfd_set_gp_value (abfd, gp_val); |
| 3297 | |
| 3298 | return TRUE; |
| 3299 | } |
| 3300 | |
| 3301 | static bfd_boolean |
| 3302 | elf64_ia64_final_link (bfd *abfd, struct bfd_link_info *info) |
| 3303 | { |
| 3304 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3305 | asection *unwind_output_sec; |
| 3306 | |
| 3307 | ia64_info = elf64_ia64_hash_table (info); |
| 3308 | if (ia64_info == NULL) |
| 3309 | return FALSE; |
| 3310 | |
| 3311 | /* Make sure we've got ourselves a nice fat __gp value. */ |
| 3312 | if (!bfd_link_relocatable (info)) |
| 3313 | { |
| 3314 | bfd_vma gp_val; |
| 3315 | struct elf_link_hash_entry *gp; |
| 3316 | |
| 3317 | /* We assume after gp is set, section size will only decrease. We |
| 3318 | need to adjust gp for it. */ |
| 3319 | _bfd_set_gp_value (abfd, 0); |
| 3320 | if (! elf64_ia64_choose_gp (abfd, info, TRUE)) |
| 3321 | return FALSE; |
| 3322 | gp_val = _bfd_get_gp_value (abfd); |
| 3323 | |
| 3324 | gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, |
| 3325 | FALSE, FALSE); |
| 3326 | if (gp) |
| 3327 | { |
| 3328 | gp->root.type = bfd_link_hash_defined; |
| 3329 | gp->root.u.def.value = gp_val; |
| 3330 | gp->root.u.def.section = bfd_abs_section_ptr; |
| 3331 | } |
| 3332 | } |
| 3333 | |
| 3334 | /* If we're producing a final executable, we need to sort the contents |
| 3335 | of the .IA_64.unwind section. Force this section to be relocated |
| 3336 | into memory rather than written immediately to the output file. */ |
| 3337 | unwind_output_sec = NULL; |
| 3338 | if (!bfd_link_relocatable (info)) |
| 3339 | { |
| 3340 | asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); |
| 3341 | if (s) |
| 3342 | { |
| 3343 | unwind_output_sec = s->output_section; |
| 3344 | unwind_output_sec->contents |
| 3345 | = bfd_malloc (unwind_output_sec->size); |
| 3346 | if (unwind_output_sec->contents == NULL) |
| 3347 | return FALSE; |
| 3348 | } |
| 3349 | } |
| 3350 | |
| 3351 | /* Invoke the regular ELF backend linker to do all the work. */ |
| 3352 | if (!bfd_elf_final_link (abfd, info)) |
| 3353 | return FALSE; |
| 3354 | |
| 3355 | if (unwind_output_sec) |
| 3356 | { |
| 3357 | elf64_ia64_unwind_entry_compare_bfd = abfd; |
| 3358 | qsort (unwind_output_sec->contents, |
| 3359 | (size_t) (unwind_output_sec->size / 24), |
| 3360 | 24, |
| 3361 | elf64_ia64_unwind_entry_compare); |
| 3362 | |
| 3363 | if (! bfd_set_section_contents (abfd, unwind_output_sec, |
| 3364 | unwind_output_sec->contents, (bfd_vma) 0, |
| 3365 | unwind_output_sec->size)) |
| 3366 | return FALSE; |
| 3367 | } |
| 3368 | |
| 3369 | return TRUE; |
| 3370 | } |
| 3371 | |
| 3372 | static bfd_boolean |
| 3373 | elf64_ia64_relocate_section (bfd *output_bfd, |
| 3374 | struct bfd_link_info *info, |
| 3375 | bfd *input_bfd, |
| 3376 | asection *input_section, |
| 3377 | bfd_byte *contents, |
| 3378 | Elf_Internal_Rela *relocs, |
| 3379 | Elf_Internal_Sym *local_syms, |
| 3380 | asection **local_sections) |
| 3381 | { |
| 3382 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3383 | Elf_Internal_Shdr *symtab_hdr; |
| 3384 | Elf_Internal_Rela *rel; |
| 3385 | Elf_Internal_Rela *relend; |
| 3386 | bfd_boolean ret_val = TRUE; /* for non-fatal errors */ |
| 3387 | bfd_vma gp_val; |
| 3388 | |
| 3389 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3390 | ia64_info = elf64_ia64_hash_table (info); |
| 3391 | if (ia64_info == NULL) |
| 3392 | return FALSE; |
| 3393 | |
| 3394 | /* Infect various flags from the input section to the output section. */ |
| 3395 | if (bfd_link_relocatable (info)) |
| 3396 | { |
| 3397 | bfd_vma flags; |
| 3398 | |
| 3399 | flags = elf_section_data(input_section)->this_hdr.sh_flags; |
| 3400 | flags &= SHF_IA_64_NORECOV; |
| 3401 | |
| 3402 | elf_section_data(input_section->output_section) |
| 3403 | ->this_hdr.sh_flags |= flags; |
| 3404 | } |
| 3405 | |
| 3406 | gp_val = _bfd_get_gp_value (output_bfd); |
| 3407 | |
| 3408 | rel = relocs; |
| 3409 | relend = relocs + input_section->reloc_count; |
| 3410 | for (; rel < relend; ++rel) |
| 3411 | { |
| 3412 | struct elf_link_hash_entry *h; |
| 3413 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 3414 | bfd_reloc_status_type r; |
| 3415 | reloc_howto_type *howto; |
| 3416 | unsigned long r_symndx; |
| 3417 | Elf_Internal_Sym *sym; |
| 3418 | unsigned int r_type; |
| 3419 | bfd_vma value; |
| 3420 | asection *sym_sec; |
| 3421 | bfd_byte *hit_addr; |
| 3422 | bfd_boolean dynamic_symbol_p; |
| 3423 | bfd_boolean undef_weak_ref; |
| 3424 | |
| 3425 | r_type = ELF64_R_TYPE (rel->r_info); |
| 3426 | if (r_type > R_IA64_MAX_RELOC_CODE) |
| 3427 | { |
| 3428 | _bfd_error_handler |
| 3429 | (_("%B: unknown relocation type %d"), |
| 3430 | input_bfd, (int) r_type); |
| 3431 | bfd_set_error (bfd_error_bad_value); |
| 3432 | ret_val = FALSE; |
| 3433 | continue; |
| 3434 | } |
| 3435 | |
| 3436 | howto = ia64_elf_lookup_howto (r_type); |
| 3437 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 3438 | h = NULL; |
| 3439 | sym = NULL; |
| 3440 | sym_sec = NULL; |
| 3441 | undef_weak_ref = FALSE; |
| 3442 | |
| 3443 | if (r_symndx < symtab_hdr->sh_info) |
| 3444 | { |
| 3445 | /* Reloc against local symbol. */ |
| 3446 | asection *msec; |
| 3447 | sym = local_syms + r_symndx; |
| 3448 | sym_sec = local_sections[r_symndx]; |
| 3449 | msec = sym_sec; |
| 3450 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); |
| 3451 | if (!bfd_link_relocatable (info) |
| 3452 | && (sym_sec->flags & SEC_MERGE) != 0 |
| 3453 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
| 3454 | && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
| 3455 | { |
| 3456 | struct elf64_ia64_local_hash_entry *loc_h; |
| 3457 | |
| 3458 | loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE); |
| 3459 | if (loc_h && ! loc_h->sec_merge_done) |
| 3460 | { |
| 3461 | struct elf64_ia64_dyn_sym_info *dynent; |
| 3462 | unsigned int count; |
| 3463 | |
| 3464 | for (count = loc_h->count, dynent = loc_h->info; |
| 3465 | count != 0; |
| 3466 | count--, dynent++) |
| 3467 | { |
| 3468 | msec = sym_sec; |
| 3469 | dynent->addend = |
| 3470 | _bfd_merged_section_offset (output_bfd, &msec, |
| 3471 | elf_section_data (msec)-> |
| 3472 | sec_info, |
| 3473 | sym->st_value |
| 3474 | + dynent->addend); |
| 3475 | dynent->addend -= sym->st_value; |
| 3476 | dynent->addend += msec->output_section->vma |
| 3477 | + msec->output_offset |
| 3478 | - sym_sec->output_section->vma |
| 3479 | - sym_sec->output_offset; |
| 3480 | } |
| 3481 | |
| 3482 | /* We may have introduced duplicated entries. We need |
| 3483 | to remove them properly. */ |
| 3484 | count = sort_dyn_sym_info (loc_h->info, loc_h->count); |
| 3485 | if (count != loc_h->count) |
| 3486 | { |
| 3487 | loc_h->count = count; |
| 3488 | loc_h->sorted_count = count; |
| 3489 | } |
| 3490 | |
| 3491 | loc_h->sec_merge_done = 1; |
| 3492 | } |
| 3493 | } |
| 3494 | } |
| 3495 | else |
| 3496 | { |
| 3497 | bfd_boolean unresolved_reloc; |
| 3498 | bfd_boolean warned, ignored; |
| 3499 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
| 3500 | |
| 3501 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 3502 | r_symndx, symtab_hdr, sym_hashes, |
| 3503 | h, sym_sec, value, |
| 3504 | unresolved_reloc, warned, ignored); |
| 3505 | |
| 3506 | if (h->root.type == bfd_link_hash_undefweak) |
| 3507 | undef_weak_ref = TRUE; |
| 3508 | else if (warned) |
| 3509 | continue; |
| 3510 | } |
| 3511 | |
| 3512 | /* For relocs against symbols from removed linkonce sections, |
| 3513 | or sections discarded by a linker script, we just want the |
| 3514 | section contents zeroed. Avoid any special processing. */ |
| 3515 | if (sym_sec != NULL && discarded_section (sym_sec)) |
| 3516 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 3517 | rel, 1, relend, howto, 0, contents); |
| 3518 | |
| 3519 | if (bfd_link_relocatable (info)) |
| 3520 | continue; |
| 3521 | |
| 3522 | hit_addr = contents + rel->r_offset; |
| 3523 | value += rel->r_addend; |
| 3524 | dynamic_symbol_p = elf64_ia64_dynamic_symbol_p (h); |
| 3525 | |
| 3526 | switch (r_type) |
| 3527 | { |
| 3528 | case R_IA64_NONE: |
| 3529 | case R_IA64_LDXMOV: |
| 3530 | continue; |
| 3531 | |
| 3532 | case R_IA64_IMM14: |
| 3533 | case R_IA64_IMM22: |
| 3534 | case R_IA64_IMM64: |
| 3535 | case R_IA64_DIR32MSB: |
| 3536 | case R_IA64_DIR32LSB: |
| 3537 | case R_IA64_DIR64MSB: |
| 3538 | case R_IA64_DIR64LSB: |
| 3539 | /* Install a dynamic relocation for this reloc. */ |
| 3540 | if ((dynamic_symbol_p || bfd_link_pic (info)) |
| 3541 | && r_symndx != 0 |
| 3542 | && (input_section->flags & SEC_ALLOC) != 0) |
| 3543 | { |
| 3544 | unsigned int dyn_r_type; |
| 3545 | bfd_vma addend; |
| 3546 | |
| 3547 | switch (r_type) |
| 3548 | { |
| 3549 | case R_IA64_IMM14: |
| 3550 | case R_IA64_IMM22: |
| 3551 | case R_IA64_IMM64: |
| 3552 | /* ??? People shouldn't be doing non-pic code in |
| 3553 | shared libraries nor dynamic executables. */ |
| 3554 | _bfd_error_handler |
| 3555 | (_("%B: non-pic code with imm relocation against dynamic symbol `%s'"), |
| 3556 | input_bfd, |
| 3557 | h ? h->root.root.string |
| 3558 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 3559 | sym_sec)); |
| 3560 | ret_val = FALSE; |
| 3561 | continue; |
| 3562 | |
| 3563 | default: |
| 3564 | break; |
| 3565 | } |
| 3566 | |
| 3567 | /* If we don't need dynamic symbol lookup, find a |
| 3568 | matching RELATIVE relocation. */ |
| 3569 | dyn_r_type = r_type; |
| 3570 | if (dynamic_symbol_p) |
| 3571 | { |
| 3572 | addend = rel->r_addend; |
| 3573 | value = 0; |
| 3574 | } |
| 3575 | else |
| 3576 | { |
| 3577 | addend = value; |
| 3578 | } |
| 3579 | |
| 3580 | /* VMS: install a FIX64. */ |
| 3581 | switch (dyn_r_type) |
| 3582 | { |
| 3583 | case R_IA64_DIR32LSB: |
| 3584 | dyn_r_type = R_IA64_VMS_FIX32; |
| 3585 | break; |
| 3586 | case R_IA64_DIR64LSB: |
| 3587 | dyn_r_type = R_IA64_VMS_FIX64; |
| 3588 | break; |
| 3589 | default: |
| 3590 | BFD_ASSERT (FALSE); |
| 3591 | break; |
| 3592 | } |
| 3593 | elf64_ia64_install_fixup |
| 3594 | (output_bfd, ia64_info, h, |
| 3595 | dyn_r_type, input_section, rel->r_offset, addend); |
| 3596 | r = bfd_reloc_ok; |
| 3597 | break; |
| 3598 | } |
| 3599 | /* Fall through. */ |
| 3600 | |
| 3601 | case R_IA64_LTV32MSB: |
| 3602 | case R_IA64_LTV32LSB: |
| 3603 | case R_IA64_LTV64MSB: |
| 3604 | case R_IA64_LTV64LSB: |
| 3605 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3606 | break; |
| 3607 | |
| 3608 | case R_IA64_GPREL22: |
| 3609 | case R_IA64_GPREL64I: |
| 3610 | case R_IA64_GPREL32MSB: |
| 3611 | case R_IA64_GPREL32LSB: |
| 3612 | case R_IA64_GPREL64MSB: |
| 3613 | case R_IA64_GPREL64LSB: |
| 3614 | if (dynamic_symbol_p) |
| 3615 | { |
| 3616 | _bfd_error_handler |
| 3617 | (_("%B: @gprel relocation against dynamic symbol %s"), |
| 3618 | input_bfd, |
| 3619 | h ? h->root.root.string |
| 3620 | : bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 3621 | sym_sec)); |
| 3622 | ret_val = FALSE; |
| 3623 | continue; |
| 3624 | } |
| 3625 | value -= gp_val; |
| 3626 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3627 | break; |
| 3628 | |
| 3629 | case R_IA64_LTOFF22: |
| 3630 | case R_IA64_LTOFF22X: |
| 3631 | case R_IA64_LTOFF64I: |
| 3632 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 3633 | value = set_got_entry (input_bfd, info, dyn_i, |
| 3634 | rel->r_addend, value, R_IA64_DIR64LSB); |
| 3635 | value -= gp_val; |
| 3636 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3637 | break; |
| 3638 | |
| 3639 | case R_IA64_PLTOFF22: |
| 3640 | case R_IA64_PLTOFF64I: |
| 3641 | case R_IA64_PLTOFF64MSB: |
| 3642 | case R_IA64_PLTOFF64LSB: |
| 3643 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 3644 | value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE); |
| 3645 | value -= gp_val; |
| 3646 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3647 | break; |
| 3648 | |
| 3649 | case R_IA64_FPTR64I: |
| 3650 | case R_IA64_FPTR32MSB: |
| 3651 | case R_IA64_FPTR32LSB: |
| 3652 | case R_IA64_FPTR64MSB: |
| 3653 | case R_IA64_FPTR64LSB: |
| 3654 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 3655 | if (dyn_i->want_fptr) |
| 3656 | { |
| 3657 | if (!undef_weak_ref) |
| 3658 | value = set_fptr_entry (output_bfd, info, dyn_i, value); |
| 3659 | } |
| 3660 | if (!dyn_i->want_fptr || bfd_link_pie (info)) |
| 3661 | { |
| 3662 | /* Otherwise, we expect the dynamic linker to create |
| 3663 | the entry. */ |
| 3664 | |
| 3665 | if (dyn_i->want_fptr) |
| 3666 | { |
| 3667 | if (r_type == R_IA64_FPTR64I) |
| 3668 | { |
| 3669 | /* We can't represent this without a dynamic symbol. |
| 3670 | Adjust the relocation to be against an output |
| 3671 | section symbol, which are always present in the |
| 3672 | dynamic symbol table. */ |
| 3673 | /* ??? People shouldn't be doing non-pic code in |
| 3674 | shared libraries. Hork. */ |
| 3675 | _bfd_error_handler |
| 3676 | (_("%B: linking non-pic code in a position independent executable"), |
| 3677 | input_bfd); |
| 3678 | ret_val = FALSE; |
| 3679 | continue; |
| 3680 | } |
| 3681 | } |
| 3682 | else |
| 3683 | { |
| 3684 | value = 0; |
| 3685 | } |
| 3686 | |
| 3687 | /* VMS: FIXFD. */ |
| 3688 | elf64_ia64_install_fixup |
| 3689 | (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, |
| 3690 | input_section, rel->r_offset, 0); |
| 3691 | r = bfd_reloc_ok; |
| 3692 | break; |
| 3693 | } |
| 3694 | |
| 3695 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3696 | break; |
| 3697 | |
| 3698 | case R_IA64_LTOFF_FPTR22: |
| 3699 | case R_IA64_LTOFF_FPTR64I: |
| 3700 | case R_IA64_LTOFF_FPTR32MSB: |
| 3701 | case R_IA64_LTOFF_FPTR32LSB: |
| 3702 | case R_IA64_LTOFF_FPTR64MSB: |
| 3703 | case R_IA64_LTOFF_FPTR64LSB: |
| 3704 | dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE); |
| 3705 | if (dyn_i->want_fptr) |
| 3706 | { |
| 3707 | BFD_ASSERT (h == NULL || !h->def_dynamic); |
| 3708 | if (!undef_weak_ref) |
| 3709 | value = set_fptr_entry (output_bfd, info, dyn_i, value); |
| 3710 | } |
| 3711 | else |
| 3712 | value = 0; |
| 3713 | |
| 3714 | value = set_got_entry (output_bfd, info, dyn_i, |
| 3715 | rel->r_addend, value, R_IA64_FPTR64LSB); |
| 3716 | value -= gp_val; |
| 3717 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3718 | break; |
| 3719 | |
| 3720 | case R_IA64_PCREL32MSB: |
| 3721 | case R_IA64_PCREL32LSB: |
| 3722 | case R_IA64_PCREL64MSB: |
| 3723 | case R_IA64_PCREL64LSB: |
| 3724 | /* Install a dynamic relocation for this reloc. */ |
| 3725 | if (dynamic_symbol_p && r_symndx != 0) |
| 3726 | { |
| 3727 | /* VMS: doesn't exist ??? */ |
| 3728 | abort (); |
| 3729 | } |
| 3730 | goto finish_pcrel; |
| 3731 | |
| 3732 | case R_IA64_PCREL21B: |
| 3733 | case R_IA64_PCREL60B: |
| 3734 | /* We should have created a PLT entry for any dynamic symbol. */ |
| 3735 | dyn_i = NULL; |
| 3736 | if (h) |
| 3737 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); |
| 3738 | |
| 3739 | if (dyn_i && dyn_i->want_plt2) |
| 3740 | { |
| 3741 | /* Should have caught this earlier. */ |
| 3742 | BFD_ASSERT (rel->r_addend == 0); |
| 3743 | |
| 3744 | value = (ia64_info->root.splt->output_section->vma |
| 3745 | + ia64_info->root.splt->output_offset |
| 3746 | + dyn_i->plt2_offset); |
| 3747 | } |
| 3748 | else |
| 3749 | { |
| 3750 | /* Since there's no PLT entry, Validate that this is |
| 3751 | locally defined. */ |
| 3752 | BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); |
| 3753 | |
| 3754 | /* If the symbol is undef_weak, we shouldn't be trying |
| 3755 | to call it. There's every chance that we'd wind up |
| 3756 | with an out-of-range fixup here. Don't bother setting |
| 3757 | any value at all. */ |
| 3758 | if (undef_weak_ref) |
| 3759 | continue; |
| 3760 | } |
| 3761 | goto finish_pcrel; |
| 3762 | |
| 3763 | case R_IA64_PCREL21BI: |
| 3764 | case R_IA64_PCREL21F: |
| 3765 | case R_IA64_PCREL21M: |
| 3766 | case R_IA64_PCREL22: |
| 3767 | case R_IA64_PCREL64I: |
| 3768 | /* The PCREL21BI reloc is specifically not intended for use with |
| 3769 | dynamic relocs. PCREL21F and PCREL21M are used for speculation |
| 3770 | fixup code, and thus probably ought not be dynamic. The |
| 3771 | PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */ |
| 3772 | if (dynamic_symbol_p) |
| 3773 | { |
| 3774 | const char *msg; |
| 3775 | |
| 3776 | if (r_type == R_IA64_PCREL21BI) |
| 3777 | msg = _("%B: @internal branch to dynamic symbol %s"); |
| 3778 | else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M) |
| 3779 | msg = _("%B: speculation fixup to dynamic symbol %s"); |
| 3780 | else |
| 3781 | msg = _("%B: @pcrel relocation against dynamic symbol %s"); |
| 3782 | _bfd_error_handler (msg, input_bfd, |
| 3783 | h ? h->root.root.string |
| 3784 | : bfd_elf_sym_name (input_bfd, |
| 3785 | symtab_hdr, |
| 3786 | sym, |
| 3787 | sym_sec)); |
| 3788 | ret_val = FALSE; |
| 3789 | continue; |
| 3790 | } |
| 3791 | goto finish_pcrel; |
| 3792 | |
| 3793 | finish_pcrel: |
| 3794 | /* Make pc-relative. */ |
| 3795 | value -= (input_section->output_section->vma |
| 3796 | + input_section->output_offset |
| 3797 | + rel->r_offset) & ~ (bfd_vma) 0x3; |
| 3798 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3799 | break; |
| 3800 | |
| 3801 | case R_IA64_SEGREL32MSB: |
| 3802 | case R_IA64_SEGREL32LSB: |
| 3803 | case R_IA64_SEGREL64MSB: |
| 3804 | case R_IA64_SEGREL64LSB: |
| 3805 | { |
| 3806 | /* Find the segment that contains the output_section. */ |
| 3807 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section |
| 3808 | (output_bfd, sym_sec->output_section); |
| 3809 | |
| 3810 | if (p == NULL) |
| 3811 | { |
| 3812 | r = bfd_reloc_notsupported; |
| 3813 | } |
| 3814 | else |
| 3815 | { |
| 3816 | /* The VMA of the segment is the vaddr of the associated |
| 3817 | program header. */ |
| 3818 | if (value > p->p_vaddr) |
| 3819 | value -= p->p_vaddr; |
| 3820 | else |
| 3821 | value = 0; |
| 3822 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3823 | } |
| 3824 | break; |
| 3825 | } |
| 3826 | |
| 3827 | case R_IA64_SECREL32MSB: |
| 3828 | case R_IA64_SECREL32LSB: |
| 3829 | case R_IA64_SECREL64MSB: |
| 3830 | case R_IA64_SECREL64LSB: |
| 3831 | /* Make output-section relative to section where the symbol |
| 3832 | is defined. PR 475 */ |
| 3833 | if (sym_sec) |
| 3834 | value -= sym_sec->output_section->vma; |
| 3835 | r = ia64_elf_install_value (hit_addr, value, r_type); |
| 3836 | break; |
| 3837 | |
| 3838 | case R_IA64_IPLTMSB: |
| 3839 | case R_IA64_IPLTLSB: |
| 3840 | /* Install a dynamic relocation for this reloc. */ |
| 3841 | if ((dynamic_symbol_p || bfd_link_pic (info)) |
| 3842 | && (input_section->flags & SEC_ALLOC) != 0) |
| 3843 | { |
| 3844 | /* VMS: FIXFD ?? */ |
| 3845 | abort (); |
| 3846 | } |
| 3847 | |
| 3848 | if (r_type == R_IA64_IPLTMSB) |
| 3849 | r_type = R_IA64_DIR64MSB; |
| 3850 | else |
| 3851 | r_type = R_IA64_DIR64LSB; |
| 3852 | ia64_elf_install_value (hit_addr, value, r_type); |
| 3853 | r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type); |
| 3854 | break; |
| 3855 | |
| 3856 | case R_IA64_TPREL14: |
| 3857 | case R_IA64_TPREL22: |
| 3858 | case R_IA64_TPREL64I: |
| 3859 | r = bfd_reloc_notsupported; |
| 3860 | break; |
| 3861 | |
| 3862 | case R_IA64_DTPREL14: |
| 3863 | case R_IA64_DTPREL22: |
| 3864 | case R_IA64_DTPREL64I: |
| 3865 | case R_IA64_DTPREL32LSB: |
| 3866 | case R_IA64_DTPREL32MSB: |
| 3867 | case R_IA64_DTPREL64LSB: |
| 3868 | case R_IA64_DTPREL64MSB: |
| 3869 | r = bfd_reloc_notsupported; |
| 3870 | break; |
| 3871 | |
| 3872 | case R_IA64_LTOFF_TPREL22: |
| 3873 | case R_IA64_LTOFF_DTPMOD22: |
| 3874 | case R_IA64_LTOFF_DTPREL22: |
| 3875 | r = bfd_reloc_notsupported; |
| 3876 | break; |
| 3877 | |
| 3878 | default: |
| 3879 | r = bfd_reloc_notsupported; |
| 3880 | break; |
| 3881 | } |
| 3882 | |
| 3883 | switch (r) |
| 3884 | { |
| 3885 | case bfd_reloc_ok: |
| 3886 | break; |
| 3887 | |
| 3888 | case bfd_reloc_undefined: |
| 3889 | /* This can happen for global table relative relocs if |
| 3890 | __gp is undefined. This is a panic situation so we |
| 3891 | don't try to continue. */ |
| 3892 | (*info->callbacks->undefined_symbol) |
| 3893 | (info, "__gp", input_bfd, input_section, rel->r_offset, 1); |
| 3894 | return FALSE; |
| 3895 | |
| 3896 | case bfd_reloc_notsupported: |
| 3897 | { |
| 3898 | const char *name; |
| 3899 | |
| 3900 | if (h) |
| 3901 | name = h->root.root.string; |
| 3902 | else |
| 3903 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 3904 | sym_sec); |
| 3905 | (*info->callbacks->warning) (info, _("unsupported reloc"), |
| 3906 | name, input_bfd, |
| 3907 | input_section, rel->r_offset); |
| 3908 | ret_val = FALSE; |
| 3909 | } |
| 3910 | break; |
| 3911 | |
| 3912 | case bfd_reloc_dangerous: |
| 3913 | case bfd_reloc_outofrange: |
| 3914 | case bfd_reloc_overflow: |
| 3915 | default: |
| 3916 | { |
| 3917 | const char *name; |
| 3918 | |
| 3919 | if (h) |
| 3920 | name = h->root.root.string; |
| 3921 | else |
| 3922 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
| 3923 | sym_sec); |
| 3924 | |
| 3925 | switch (r_type) |
| 3926 | { |
| 3927 | case R_IA64_TPREL14: |
| 3928 | case R_IA64_TPREL22: |
| 3929 | case R_IA64_TPREL64I: |
| 3930 | case R_IA64_DTPREL14: |
| 3931 | case R_IA64_DTPREL22: |
| 3932 | case R_IA64_DTPREL64I: |
| 3933 | case R_IA64_DTPREL32LSB: |
| 3934 | case R_IA64_DTPREL32MSB: |
| 3935 | case R_IA64_DTPREL64LSB: |
| 3936 | case R_IA64_DTPREL64MSB: |
| 3937 | case R_IA64_LTOFF_TPREL22: |
| 3938 | case R_IA64_LTOFF_DTPMOD22: |
| 3939 | case R_IA64_LTOFF_DTPREL22: |
| 3940 | _bfd_error_handler |
| 3941 | (_("%B: missing TLS section for relocation %s against `%s' at 0x%lx in section `%A'."), |
| 3942 | input_bfd, input_section, howto->name, name, |
| 3943 | rel->r_offset); |
| 3944 | break; |
| 3945 | |
| 3946 | case R_IA64_PCREL21B: |
| 3947 | case R_IA64_PCREL21BI: |
| 3948 | case R_IA64_PCREL21M: |
| 3949 | case R_IA64_PCREL21F: |
| 3950 | if (is_elf_hash_table (info->hash)) |
| 3951 | { |
| 3952 | /* Relaxtion is always performed for ELF output. |
| 3953 | Overflow failures for those relocations mean |
| 3954 | that the section is too big to relax. */ |
| 3955 | _bfd_error_handler |
| 3956 | (_("%B: Can't relax br (%s) to `%s' at 0x%lx in section `%A' with size 0x%lx (> 0x1000000)."), |
| 3957 | input_bfd, input_section, howto->name, name, |
| 3958 | rel->r_offset, input_section->size); |
| 3959 | break; |
| 3960 | } |
| 3961 | /* Fall through. */ |
| 3962 | default: |
| 3963 | (*info->callbacks->reloc_overflow) (info, |
| 3964 | &h->root, |
| 3965 | name, |
| 3966 | howto->name, |
| 3967 | (bfd_vma) 0, |
| 3968 | input_bfd, |
| 3969 | input_section, |
| 3970 | rel->r_offset); |
| 3971 | break; |
| 3972 | } |
| 3973 | |
| 3974 | ret_val = FALSE; |
| 3975 | } |
| 3976 | break; |
| 3977 | } |
| 3978 | } |
| 3979 | |
| 3980 | return ret_val; |
| 3981 | } |
| 3982 | |
| 3983 | static bfd_boolean |
| 3984 | elf64_ia64_finish_dynamic_symbol (bfd *output_bfd, |
| 3985 | struct bfd_link_info *info, |
| 3986 | struct elf_link_hash_entry *h, |
| 3987 | Elf_Internal_Sym *sym) |
| 3988 | { |
| 3989 | struct elf64_ia64_link_hash_table *ia64_info; |
| 3990 | struct elf64_ia64_dyn_sym_info *dyn_i; |
| 3991 | |
| 3992 | ia64_info = elf64_ia64_hash_table (info); |
| 3993 | if (ia64_info == NULL) |
| 3994 | return FALSE; |
| 3995 | |
| 3996 | dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE); |
| 3997 | |
| 3998 | /* Fill in the PLT data, if required. */ |
| 3999 | if (dyn_i && dyn_i->want_plt) |
| 4000 | { |
| 4001 | bfd_byte *loc; |
| 4002 | asection *plt_sec; |
| 4003 | bfd_vma plt_addr, pltoff_addr, gp_val; |
| 4004 | |
| 4005 | gp_val = _bfd_get_gp_value (output_bfd); |
| 4006 | |
| 4007 | plt_sec = ia64_info->root.splt; |
| 4008 | plt_addr = 0; /* Not used as overriden by FIXUPs. */ |
| 4009 | pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE); |
| 4010 | |
| 4011 | /* Initialize the FULL PLT entry, if needed. */ |
| 4012 | if (dyn_i->want_plt2) |
| 4013 | { |
| 4014 | loc = plt_sec->contents + dyn_i->plt2_offset; |
| 4015 | |
| 4016 | memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); |
| 4017 | ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22); |
| 4018 | |
| 4019 | /* Mark the symbol as undefined, rather than as defined in the |
| 4020 | plt section. Leave the value alone. */ |
| 4021 | /* ??? We didn't redefine it in adjust_dynamic_symbol in the |
| 4022 | first place. But perhaps elflink.c did some for us. */ |
| 4023 | if (!h->def_regular) |
| 4024 | sym->st_shndx = SHN_UNDEF; |
| 4025 | } |
| 4026 | |
| 4027 | /* VMS: FIXFD. */ |
| 4028 | elf64_ia64_install_fixup |
| 4029 | (output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, ia64_info->pltoff_sec, |
| 4030 | pltoff_addr - (ia64_info->pltoff_sec->output_section->vma |
| 4031 | + ia64_info->pltoff_sec->output_offset), 0); |
| 4032 | } |
| 4033 | |
| 4034 | /* Mark some specially defined symbols as absolute. */ |
| 4035 | if (h == ia64_info->root.hdynamic |
| 4036 | || h == ia64_info->root.hgot |
| 4037 | || h == ia64_info->root.hplt) |
| 4038 | sym->st_shndx = SHN_ABS; |
| 4039 | |
| 4040 | return TRUE; |
| 4041 | } |
| 4042 | |
| 4043 | static bfd_boolean |
| 4044 | elf64_ia64_finish_dynamic_sections (bfd *abfd, |
| 4045 | struct bfd_link_info *info) |
| 4046 | { |
| 4047 | struct elf64_ia64_link_hash_table *ia64_info; |
| 4048 | bfd *dynobj; |
| 4049 | |
| 4050 | ia64_info = elf64_ia64_hash_table (info); |
| 4051 | if (ia64_info == NULL) |
| 4052 | return FALSE; |
| 4053 | |
| 4054 | dynobj = ia64_info->root.dynobj; |
| 4055 | |
| 4056 | if (elf_hash_table (info)->dynamic_sections_created) |
| 4057 | { |
| 4058 | Elf64_External_Dyn *dyncon, *dynconend; |
| 4059 | asection *sdyn; |
| 4060 | asection *unwind_sec; |
| 4061 | bfd_vma gp_val; |
| 4062 | unsigned int gp_seg; |
| 4063 | bfd_vma gp_off; |
| 4064 | Elf_Internal_Phdr *phdr; |
| 4065 | Elf_Internal_Phdr *base_phdr; |
| 4066 | unsigned int unwind_seg = 0; |
| 4067 | unsigned int code_seg = 0; |
| 4068 | |
| 4069 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 4070 | BFD_ASSERT (sdyn != NULL); |
| 4071 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
| 4072 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 4073 | |
| 4074 | gp_val = _bfd_get_gp_value (abfd); |
| 4075 | phdr = _bfd_elf_find_segment_containing_section |
| 4076 | (info->output_bfd, ia64_info->pltoff_sec->output_section); |
| 4077 | BFD_ASSERT (phdr != NULL); |
| 4078 | base_phdr = elf_tdata (info->output_bfd)->phdr; |
| 4079 | gp_seg = phdr - base_phdr; |
| 4080 | gp_off = gp_val - phdr->p_vaddr; |
| 4081 | |
| 4082 | unwind_sec = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); |
| 4083 | if (unwind_sec != NULL) |
| 4084 | { |
| 4085 | asection *code_sec; |
| 4086 | |
| 4087 | phdr = _bfd_elf_find_segment_containing_section (abfd, unwind_sec); |
| 4088 | BFD_ASSERT (phdr != NULL); |
| 4089 | unwind_seg = phdr - base_phdr; |
| 4090 | |
| 4091 | code_sec = bfd_get_section_by_name (abfd, "$CODE$"); |
| 4092 | phdr = _bfd_elf_find_segment_containing_section (abfd, code_sec); |
| 4093 | BFD_ASSERT (phdr != NULL); |
| 4094 | code_seg = phdr - base_phdr; |
| 4095 | } |
| 4096 | |
| 4097 | for (; dyncon < dynconend; dyncon++) |
| 4098 | { |
| 4099 | Elf_Internal_Dyn dyn; |
| 4100 | |
| 4101 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
| 4102 | |
| 4103 | switch (dyn.d_tag) |
| 4104 | { |
| 4105 | case DT_IA_64_VMS_FIXUP_RELA_OFF: |
| 4106 | dyn.d_un.d_val += |
| 4107 | (ia64_info->fixups_sec->output_section->vma |
| 4108 | + ia64_info->fixups_sec->output_offset) |
| 4109 | - (sdyn->output_section->vma + sdyn->output_offset); |
| 4110 | break; |
| 4111 | |
| 4112 | case DT_IA_64_VMS_PLTGOT_OFFSET: |
| 4113 | dyn.d_un.d_val = gp_off; |
| 4114 | break; |
| 4115 | |
| 4116 | case DT_IA_64_VMS_PLTGOT_SEG: |
| 4117 | dyn.d_un.d_val = gp_seg; |
| 4118 | break; |
| 4119 | |
| 4120 | case DT_IA_64_VMS_UNWINDSZ: |
| 4121 | if (unwind_sec == NULL) |
| 4122 | { |
| 4123 | dyn.d_tag = DT_NULL; |
| 4124 | dyn.d_un.d_val = 0xdead; |
| 4125 | } |
| 4126 | else |
| 4127 | dyn.d_un.d_val = unwind_sec->size; |
| 4128 | break; |
| 4129 | |
| 4130 | case DT_IA_64_VMS_UNWIND_CODSEG: |
| 4131 | dyn.d_un.d_val = code_seg; |
| 4132 | break; |
| 4133 | |
| 4134 | case DT_IA_64_VMS_UNWIND_INFOSEG: |
| 4135 | case DT_IA_64_VMS_UNWIND_SEG: |
| 4136 | dyn.d_un.d_val = unwind_seg; |
| 4137 | break; |
| 4138 | |
| 4139 | case DT_IA_64_VMS_UNWIND_OFFSET: |
| 4140 | break; |
| 4141 | |
| 4142 | default: |
| 4143 | /* No need to rewrite the entry. */ |
| 4144 | continue; |
| 4145 | } |
| 4146 | |
| 4147 | bfd_elf64_swap_dyn_out (abfd, &dyn, dyncon); |
| 4148 | } |
| 4149 | } |
| 4150 | |
| 4151 | /* Handle transfer addresses. */ |
| 4152 | { |
| 4153 | asection *tfr_sec = ia64_info->transfer_sec; |
| 4154 | struct elf64_vms_transfer *tfr; |
| 4155 | struct elf_link_hash_entry *tfr3; |
| 4156 | |
| 4157 | tfr = (struct elf64_vms_transfer *)tfr_sec->contents; |
| 4158 | bfd_putl32 (6 * 8, tfr->size); |
| 4159 | bfd_putl64 (tfr_sec->output_section->vma |
| 4160 | + tfr_sec->output_offset |
| 4161 | + 6 * 8, tfr->tfradr3); |
| 4162 | |
| 4163 | tfr3 = elf_link_hash_lookup (elf_hash_table (info), "ELF$TFRADR", FALSE, |
| 4164 | FALSE, FALSE); |
| 4165 | |
| 4166 | if (tfr3 |
| 4167 | && (tfr3->root.type == bfd_link_hash_defined |
| 4168 | || tfr3->root.type == bfd_link_hash_defweak)) |
| 4169 | { |
| 4170 | asection *tfr3_sec = tfr3->root.u.def.section; |
| 4171 | bfd_vma tfr3_val; |
| 4172 | |
| 4173 | tfr3_val = (tfr3->root.u.def.value |
| 4174 | + tfr3_sec->output_section->vma |
| 4175 | + tfr3_sec->output_offset); |
| 4176 | |
| 4177 | bfd_putl64 (tfr3_val, tfr->tfr3_func); |
| 4178 | bfd_putl64 (_bfd_get_gp_value (info->output_bfd), tfr->tfr3_gp); |
| 4179 | } |
| 4180 | |
| 4181 | /* FIXME: set linker flags, |
| 4182 | handle lib$initialize. */ |
| 4183 | } |
| 4184 | |
| 4185 | return TRUE; |
| 4186 | } |
| 4187 | |
| 4188 | /* ELF file flag handling: */ |
| 4189 | |
| 4190 | /* Function to keep IA-64 specific file flags. */ |
| 4191 | static bfd_boolean |
| 4192 | elf64_ia64_set_private_flags (bfd *abfd, flagword flags) |
| 4193 | { |
| 4194 | BFD_ASSERT (!elf_flags_init (abfd) |
| 4195 | || elf_elfheader (abfd)->e_flags == flags); |
| 4196 | |
| 4197 | elf_elfheader (abfd)->e_flags = flags; |
| 4198 | elf_flags_init (abfd) = TRUE; |
| 4199 | return TRUE; |
| 4200 | } |
| 4201 | |
| 4202 | /* Merge backend specific data from an object file to the output |
| 4203 | object file when linking. */ |
| 4204 | static bfd_boolean |
| 4205 | elf64_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
| 4206 | { |
| 4207 | bfd *obfd = info->output_bfd; |
| 4208 | flagword out_flags; |
| 4209 | flagword in_flags; |
| 4210 | bfd_boolean ok = TRUE; |
| 4211 | |
| 4212 | /* Don't even pretend to support mixed-format linking. */ |
| 4213 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 4214 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 4215 | return FALSE; |
| 4216 | |
| 4217 | in_flags = elf_elfheader (ibfd)->e_flags; |
| 4218 | out_flags = elf_elfheader (obfd)->e_flags; |
| 4219 | |
| 4220 | if (! elf_flags_init (obfd)) |
| 4221 | { |
| 4222 | elf_flags_init (obfd) = TRUE; |
| 4223 | elf_elfheader (obfd)->e_flags = in_flags; |
| 4224 | |
| 4225 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
| 4226 | && bfd_get_arch_info (obfd)->the_default) |
| 4227 | { |
| 4228 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
| 4229 | bfd_get_mach (ibfd)); |
| 4230 | } |
| 4231 | |
| 4232 | return TRUE; |
| 4233 | } |
| 4234 | |
| 4235 | /* Check flag compatibility. */ |
| 4236 | if (in_flags == out_flags) |
| 4237 | return TRUE; |
| 4238 | |
| 4239 | /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ |
| 4240 | if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) |
| 4241 | elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; |
| 4242 | |
| 4243 | if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) |
| 4244 | { |
| 4245 | _bfd_error_handler |
| 4246 | (_("%B: linking trap-on-NULL-dereference with non-trapping files"), |
| 4247 | ibfd); |
| 4248 | |
| 4249 | bfd_set_error (bfd_error_bad_value); |
| 4250 | ok = FALSE; |
| 4251 | } |
| 4252 | if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) |
| 4253 | { |
| 4254 | _bfd_error_handler |
| 4255 | (_("%B: linking big-endian files with little-endian files"), |
| 4256 | ibfd); |
| 4257 | |
| 4258 | bfd_set_error (bfd_error_bad_value); |
| 4259 | ok = FALSE; |
| 4260 | } |
| 4261 | if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) |
| 4262 | { |
| 4263 | _bfd_error_handler |
| 4264 | (_("%B: linking 64-bit files with 32-bit files"), |
| 4265 | ibfd); |
| 4266 | |
| 4267 | bfd_set_error (bfd_error_bad_value); |
| 4268 | ok = FALSE; |
| 4269 | } |
| 4270 | if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) |
| 4271 | { |
| 4272 | _bfd_error_handler |
| 4273 | (_("%B: linking constant-gp files with non-constant-gp files"), |
| 4274 | ibfd); |
| 4275 | |
| 4276 | bfd_set_error (bfd_error_bad_value); |
| 4277 | ok = FALSE; |
| 4278 | } |
| 4279 | if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) |
| 4280 | != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) |
| 4281 | { |
| 4282 | _bfd_error_handler |
| 4283 | (_("%B: linking auto-pic files with non-auto-pic files"), |
| 4284 | ibfd); |
| 4285 | |
| 4286 | bfd_set_error (bfd_error_bad_value); |
| 4287 | ok = FALSE; |
| 4288 | } |
| 4289 | |
| 4290 | return ok; |
| 4291 | } |
| 4292 | |
| 4293 | static bfd_boolean |
| 4294 | elf64_ia64_print_private_bfd_data (bfd *abfd, void * ptr) |
| 4295 | { |
| 4296 | FILE *file = (FILE *) ptr; |
| 4297 | flagword flags = elf_elfheader (abfd)->e_flags; |
| 4298 | |
| 4299 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 4300 | |
| 4301 | fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", |
| 4302 | (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", |
| 4303 | (flags & EF_IA_64_EXT) ? "EXT, " : "", |
| 4304 | (flags & EF_IA_64_BE) ? "BE, " : "LE, ", |
| 4305 | (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", |
| 4306 | (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", |
| 4307 | (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", |
| 4308 | (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", |
| 4309 | (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); |
| 4310 | |
| 4311 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 4312 | return TRUE; |
| 4313 | } |
| 4314 | |
| 4315 | static enum elf_reloc_type_class |
| 4316 | elf64_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 4317 | const asection *rel_sec ATTRIBUTE_UNUSED, |
| 4318 | const Elf_Internal_Rela *rela) |
| 4319 | { |
| 4320 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
| 4321 | { |
| 4322 | case R_IA64_REL32MSB: |
| 4323 | case R_IA64_REL32LSB: |
| 4324 | case R_IA64_REL64MSB: |
| 4325 | case R_IA64_REL64LSB: |
| 4326 | return reloc_class_relative; |
| 4327 | case R_IA64_IPLTMSB: |
| 4328 | case R_IA64_IPLTLSB: |
| 4329 | return reloc_class_plt; |
| 4330 | case R_IA64_COPY: |
| 4331 | return reloc_class_copy; |
| 4332 | default: |
| 4333 | return reloc_class_normal; |
| 4334 | } |
| 4335 | } |
| 4336 | |
| 4337 | static const struct bfd_elf_special_section elf64_ia64_special_sections[] = |
| 4338 | { |
| 4339 | { STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
| 4340 | { STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT }, |
| 4341 | { NULL, 0, 0, 0, 0 } |
| 4342 | }; |
| 4343 | |
| 4344 | static bfd_boolean |
| 4345 | elf64_ia64_object_p (bfd *abfd) |
| 4346 | { |
| 4347 | asection *sec; |
| 4348 | asection *group, *unwi, *unw; |
| 4349 | flagword flags; |
| 4350 | const char *name; |
| 4351 | char *unwi_name, *unw_name; |
| 4352 | bfd_size_type amt; |
| 4353 | |
| 4354 | if (abfd->flags & DYNAMIC) |
| 4355 | return TRUE; |
| 4356 | |
| 4357 | /* Flags for fake group section. */ |
| 4358 | flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE |
| 4359 | | SEC_EXCLUDE); |
| 4360 | |
| 4361 | /* We add a fake section group for each .gnu.linkonce.t.* section, |
| 4362 | which isn't in a section group, and its unwind sections. */ |
| 4363 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 4364 | { |
| 4365 | if (elf_sec_group (sec) == NULL |
| 4366 | && ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP)) |
| 4367 | == (SEC_LINK_ONCE | SEC_CODE)) |
| 4368 | && CONST_STRNEQ (sec->name, ".gnu.linkonce.t.")) |
| 4369 | { |
| 4370 | name = sec->name + 16; |
| 4371 | |
| 4372 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi."); |
| 4373 | unwi_name = bfd_alloc (abfd, amt); |
| 4374 | if (!unwi_name) |
| 4375 | return FALSE; |
| 4376 | |
| 4377 | strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name); |
| 4378 | unwi = bfd_get_section_by_name (abfd, unwi_name); |
| 4379 | |
| 4380 | amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw."); |
| 4381 | unw_name = bfd_alloc (abfd, amt); |
| 4382 | if (!unw_name) |
| 4383 | return FALSE; |
| 4384 | |
| 4385 | strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name); |
| 4386 | unw = bfd_get_section_by_name (abfd, unw_name); |
| 4387 | |
| 4388 | /* We need to create a fake group section for it and its |
| 4389 | unwind sections. */ |
| 4390 | group = bfd_make_section_anyway_with_flags (abfd, name, |
| 4391 | flags); |
| 4392 | if (group == NULL) |
| 4393 | return FALSE; |
| 4394 | |
| 4395 | /* Move the fake group section to the beginning. */ |
| 4396 | bfd_section_list_remove (abfd, group); |
| 4397 | bfd_section_list_prepend (abfd, group); |
| 4398 | |
| 4399 | elf_next_in_group (group) = sec; |
| 4400 | |
| 4401 | elf_group_name (sec) = name; |
| 4402 | elf_next_in_group (sec) = sec; |
| 4403 | elf_sec_group (sec) = group; |
| 4404 | |
| 4405 | if (unwi) |
| 4406 | { |
| 4407 | elf_group_name (unwi) = name; |
| 4408 | elf_next_in_group (unwi) = sec; |
| 4409 | elf_next_in_group (sec) = unwi; |
| 4410 | elf_sec_group (unwi) = group; |
| 4411 | } |
| 4412 | |
| 4413 | if (unw) |
| 4414 | { |
| 4415 | elf_group_name (unw) = name; |
| 4416 | if (unwi) |
| 4417 | { |
| 4418 | elf_next_in_group (unw) = elf_next_in_group (unwi); |
| 4419 | elf_next_in_group (unwi) = unw; |
| 4420 | } |
| 4421 | else |
| 4422 | { |
| 4423 | elf_next_in_group (unw) = sec; |
| 4424 | elf_next_in_group (sec) = unw; |
| 4425 | } |
| 4426 | elf_sec_group (unw) = group; |
| 4427 | } |
| 4428 | |
| 4429 | /* Fake SHT_GROUP section header. */ |
| 4430 | elf_section_data (group)->this_hdr.bfd_section = group; |
| 4431 | elf_section_data (group)->this_hdr.sh_type = SHT_GROUP; |
| 4432 | } |
| 4433 | } |
| 4434 | return TRUE; |
| 4435 | } |
| 4436 | |
| 4437 | /* Handle an IA-64 specific section when reading an object file. This |
| 4438 | is called when bfd_section_from_shdr finds a section with an unknown |
| 4439 | type. */ |
| 4440 | |
| 4441 | static bfd_boolean |
| 4442 | elf64_vms_section_from_shdr (bfd *abfd, |
| 4443 | Elf_Internal_Shdr *hdr, |
| 4444 | const char *name, |
| 4445 | int shindex) |
| 4446 | { |
| 4447 | flagword secflags = 0; |
| 4448 | |
| 4449 | switch (hdr->sh_type) |
| 4450 | { |
| 4451 | case SHT_IA_64_VMS_TRACE: |
| 4452 | case SHT_IA_64_VMS_DEBUG: |
| 4453 | case SHT_IA_64_VMS_DEBUG_STR: |
| 4454 | secflags = SEC_DEBUGGING; |
| 4455 | break; |
| 4456 | |
| 4457 | case SHT_IA_64_UNWIND: |
| 4458 | case SHT_IA_64_HP_OPT_ANOT: |
| 4459 | break; |
| 4460 | |
| 4461 | case SHT_IA_64_EXT: |
| 4462 | if (strcmp (name, ELF_STRING_ia64_archext) != 0) |
| 4463 | return FALSE; |
| 4464 | break; |
| 4465 | |
| 4466 | default: |
| 4467 | return FALSE; |
| 4468 | } |
| 4469 | |
| 4470 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
| 4471 | return FALSE; |
| 4472 | |
| 4473 | if (secflags != 0) |
| 4474 | { |
| 4475 | asection *newsect = hdr->bfd_section; |
| 4476 | |
| 4477 | if (! bfd_set_section_flags |
| 4478 | (abfd, newsect, bfd_get_section_flags (abfd, newsect) | secflags)) |
| 4479 | return FALSE; |
| 4480 | } |
| 4481 | |
| 4482 | return TRUE; |
| 4483 | } |
| 4484 | |
| 4485 | static bfd_boolean |
| 4486 | elf64_vms_object_p (bfd *abfd) |
| 4487 | { |
| 4488 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); |
| 4489 | Elf_Internal_Phdr *i_phdr = elf_tdata (abfd)->phdr; |
| 4490 | unsigned int i; |
| 4491 | unsigned int num_text = 0; |
| 4492 | unsigned int num_data = 0; |
| 4493 | unsigned int num_rodata = 0; |
| 4494 | char name[16]; |
| 4495 | |
| 4496 | if (!elf64_ia64_object_p (abfd)) |
| 4497 | return FALSE; |
| 4498 | |
| 4499 | /* Many VMS compilers do not generate sections for the corresponding |
| 4500 | segment. This is boring as binutils tools won't be able to disassemble |
| 4501 | the code. So we simply create all the missing sections. */ |
| 4502 | for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) |
| 4503 | { |
| 4504 | /* Is there a section for this segment? */ |
| 4505 | bfd_vma base_vma = i_phdr->p_vaddr; |
| 4506 | bfd_vma limit_vma = base_vma + i_phdr->p_filesz; |
| 4507 | |
| 4508 | if (i_phdr->p_type != PT_LOAD) |
| 4509 | continue; |
| 4510 | |
| 4511 | /* We need to cover from base_vms to limit_vma. */ |
| 4512 | again: |
| 4513 | while (base_vma < limit_vma) |
| 4514 | { |
| 4515 | bfd_vma next_vma = limit_vma; |
| 4516 | asection *nsec; |
| 4517 | asection *sec; |
| 4518 | flagword flags; |
| 4519 | char *nname = NULL; |
| 4520 | |
| 4521 | /* Find a section covering [base_vma;limit_vma) */ |
| 4522 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
| 4523 | { |
| 4524 | /* Skip uninteresting sections (either not in memory or |
| 4525 | below base_vma. */ |
| 4526 | if ((sec->flags & (SEC_ALLOC | SEC_LOAD)) == 0 |
| 4527 | || sec->vma + sec->size <= base_vma) |
| 4528 | continue; |
| 4529 | if (sec->vma <= base_vma) |
| 4530 | { |
| 4531 | /* This section covers (maybe partially) the beginning |
| 4532 | of the range. */ |
| 4533 | base_vma = sec->vma + sec->size; |
| 4534 | goto again; |
| 4535 | } |
| 4536 | if (sec->vma < next_vma) |
| 4537 | { |
| 4538 | /* This section partially covers the end of the range. |
| 4539 | Used to compute the size of the hole. */ |
| 4540 | next_vma = sec->vma; |
| 4541 | } |
| 4542 | } |
| 4543 | |
| 4544 | /* No section covering [base_vma; next_vma). Create a fake one. */ |
| 4545 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; |
| 4546 | if (i_phdr->p_flags & PF_X) |
| 4547 | { |
| 4548 | flags |= SEC_CODE; |
| 4549 | if (num_text++ == 0) |
| 4550 | nname = ".text"; |
| 4551 | else |
| 4552 | sprintf (name, ".text$%u", num_text); |
| 4553 | } |
| 4554 | else if ((i_phdr->p_flags & (PF_R | PF_W)) == PF_R) |
| 4555 | { |
| 4556 | flags |= SEC_READONLY; |
| 4557 | sprintf (name, ".rodata$%u", num_rodata++); |
| 4558 | } |
| 4559 | else |
| 4560 | { |
| 4561 | flags |= SEC_DATA; |
| 4562 | sprintf (name, ".data$%u", num_data++); |
| 4563 | } |
| 4564 | |
| 4565 | /* Allocate name. */ |
| 4566 | if (nname == NULL) |
| 4567 | { |
| 4568 | size_t name_len = strlen (name) + 1; |
| 4569 | nname = bfd_alloc (abfd, name_len); |
| 4570 | if (nname == NULL) |
| 4571 | return FALSE; |
| 4572 | memcpy (nname, name, name_len); |
| 4573 | } |
| 4574 | |
| 4575 | /* Create and fill new section. */ |
| 4576 | nsec = bfd_make_section_anyway_with_flags (abfd, nname, flags); |
| 4577 | if (nsec == NULL) |
| 4578 | return FALSE; |
| 4579 | nsec->vma = base_vma; |
| 4580 | nsec->size = next_vma - base_vma; |
| 4581 | nsec->filepos = i_phdr->p_offset + (base_vma - i_phdr->p_vaddr); |
| 4582 | |
| 4583 | base_vma = next_vma; |
| 4584 | } |
| 4585 | } |
| 4586 | return TRUE; |
| 4587 | } |
| 4588 | |
| 4589 | static void |
| 4590 | elf64_vms_post_process_headers (bfd *abfd, |
| 4591 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 4592 | { |
| 4593 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); |
| 4594 | |
| 4595 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_OPENVMS; |
| 4596 | i_ehdrp->e_ident[EI_ABIVERSION] = 2; |
| 4597 | } |
| 4598 | |
| 4599 | static bfd_boolean |
| 4600 | elf64_vms_section_processing (bfd *abfd ATTRIBUTE_UNUSED, |
| 4601 | Elf_Internal_Shdr *hdr) |
| 4602 | { |
| 4603 | if (hdr->bfd_section != NULL) |
| 4604 | { |
| 4605 | const char *name = bfd_get_section_name (abfd, hdr->bfd_section); |
| 4606 | |
| 4607 | if (strcmp (name, ".text") == 0) |
| 4608 | hdr->sh_flags |= SHF_IA_64_VMS_SHARED; |
| 4609 | else if ((strcmp (name, ".debug") == 0) |
| 4610 | || (strcmp (name, ".debug_abbrev") == 0) |
| 4611 | || (strcmp (name, ".debug_aranges") == 0) |
| 4612 | || (strcmp (name, ".debug_frame") == 0) |
| 4613 | || (strcmp (name, ".debug_info") == 0) |
| 4614 | || (strcmp (name, ".debug_loc") == 0) |
| 4615 | || (strcmp (name, ".debug_macinfo") == 0) |
| 4616 | || (strcmp (name, ".debug_pubnames") == 0) |
| 4617 | || (strcmp (name, ".debug_pubtypes") == 0)) |
| 4618 | hdr->sh_type = SHT_IA_64_VMS_DEBUG; |
| 4619 | else if ((strcmp (name, ".debug_line") == 0) |
| 4620 | || (strcmp (name, ".debug_ranges") == 0) |
| 4621 | || (strcmp (name, ".trace_info") == 0) |
| 4622 | || (strcmp (name, ".trace_abbrev") == 0) |
| 4623 | || (strcmp (name, ".trace_aranges") == 0)) |
| 4624 | hdr->sh_type = SHT_IA_64_VMS_TRACE; |
| 4625 | else if (strcmp (name, ".debug_str") == 0) |
| 4626 | hdr->sh_type = SHT_IA_64_VMS_DEBUG_STR; |
| 4627 | } |
| 4628 | |
| 4629 | return TRUE; |
| 4630 | } |
| 4631 | |
| 4632 | /* The final processing done just before writing out a VMS IA-64 ELF |
| 4633 | object file. */ |
| 4634 | |
| 4635 | static void |
| 4636 | elf64_vms_final_write_processing (bfd *abfd, |
| 4637 | bfd_boolean linker ATTRIBUTE_UNUSED) |
| 4638 | { |
| 4639 | Elf_Internal_Shdr *hdr; |
| 4640 | asection *s; |
| 4641 | int unwind_info_sect_idx = 0; |
| 4642 | |
| 4643 | for (s = abfd->sections; s; s = s->next) |
| 4644 | { |
| 4645 | hdr = &elf_section_data (s)->this_hdr; |
| 4646 | |
| 4647 | if (strcmp (bfd_get_section_name (abfd, hdr->bfd_section), |
| 4648 | ".IA_64.unwind_info") == 0) |
| 4649 | unwind_info_sect_idx = elf_section_data (s)->this_idx; |
| 4650 | |
| 4651 | switch (hdr->sh_type) |
| 4652 | { |
| 4653 | case SHT_IA_64_UNWIND: |
| 4654 | /* VMS requires sh_info to point to the unwind info section. */ |
| 4655 | hdr->sh_info = unwind_info_sect_idx; |
| 4656 | break; |
| 4657 | } |
| 4658 | } |
| 4659 | |
| 4660 | if (! elf_flags_init (abfd)) |
| 4661 | { |
| 4662 | unsigned long flags = 0; |
| 4663 | |
| 4664 | if (abfd->xvec->byteorder == BFD_ENDIAN_BIG) |
| 4665 | flags |= EF_IA_64_BE; |
| 4666 | if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64) |
| 4667 | flags |= EF_IA_64_ABI64; |
| 4668 | |
| 4669 | elf_elfheader (abfd)->e_flags = flags; |
| 4670 | elf_flags_init (abfd) = TRUE; |
| 4671 | } |
| 4672 | } |
| 4673 | |
| 4674 | static bfd_boolean |
| 4675 | elf64_vms_write_shdrs_and_ehdr (bfd *abfd) |
| 4676 | { |
| 4677 | unsigned char needed_count[8]; |
| 4678 | |
| 4679 | if (!bfd_elf64_write_shdrs_and_ehdr (abfd)) |
| 4680 | return FALSE; |
| 4681 | |
| 4682 | bfd_putl64 (elf_ia64_vms_tdata (abfd)->needed_count, needed_count); |
| 4683 | |
| 4684 | if (bfd_seek (abfd, sizeof (Elf64_External_Ehdr), SEEK_SET) != 0 |
| 4685 | || bfd_bwrite (needed_count, 8, abfd) != 8) |
| 4686 | return FALSE; |
| 4687 | |
| 4688 | return TRUE; |
| 4689 | } |
| 4690 | |
| 4691 | static bfd_boolean |
| 4692 | elf64_vms_close_and_cleanup (bfd *abfd) |
| 4693 | { |
| 4694 | if (bfd_get_format (abfd) == bfd_object) |
| 4695 | { |
| 4696 | long isize; |
| 4697 | |
| 4698 | /* Pad to 8 byte boundary for IPF/VMS. */ |
| 4699 | isize = bfd_get_size (abfd); |
| 4700 | if ((isize & 7) != 0) |
| 4701 | { |
| 4702 | int ishort = 8 - (isize & 7); |
| 4703 | bfd_uint64_t pad = 0; |
| 4704 | |
| 4705 | bfd_seek (abfd, isize, SEEK_SET); |
| 4706 | bfd_bwrite (&pad, ishort, abfd); |
| 4707 | } |
| 4708 | } |
| 4709 | |
| 4710 | return _bfd_elf_close_and_cleanup (abfd); |
| 4711 | } |
| 4712 | |
| 4713 | /* Add symbols from an ELF object file to the linker hash table. */ |
| 4714 | |
| 4715 | static bfd_boolean |
| 4716 | elf64_vms_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) |
| 4717 | { |
| 4718 | Elf_Internal_Shdr *hdr; |
| 4719 | bfd_size_type symcount; |
| 4720 | bfd_size_type extsymcount; |
| 4721 | bfd_size_type extsymoff; |
| 4722 | struct elf_link_hash_entry **sym_hash; |
| 4723 | bfd_boolean dynamic; |
| 4724 | Elf_Internal_Sym *isymbuf = NULL; |
| 4725 | Elf_Internal_Sym *isym; |
| 4726 | Elf_Internal_Sym *isymend; |
| 4727 | const struct elf_backend_data *bed; |
| 4728 | struct elf_link_hash_table *htab; |
| 4729 | bfd_size_type amt; |
| 4730 | |
| 4731 | htab = elf_hash_table (info); |
| 4732 | bed = get_elf_backend_data (abfd); |
| 4733 | |
| 4734 | if ((abfd->flags & DYNAMIC) == 0) |
| 4735 | dynamic = FALSE; |
| 4736 | else |
| 4737 | { |
| 4738 | dynamic = TRUE; |
| 4739 | |
| 4740 | /* You can't use -r against a dynamic object. Also, there's no |
| 4741 | hope of using a dynamic object which does not exactly match |
| 4742 | the format of the output file. */ |
| 4743 | if (bfd_link_relocatable (info) |
| 4744 | || !is_elf_hash_table (htab) |
| 4745 | || info->output_bfd->xvec != abfd->xvec) |
| 4746 | { |
| 4747 | if (bfd_link_relocatable (info)) |
| 4748 | bfd_set_error (bfd_error_invalid_operation); |
| 4749 | else |
| 4750 | bfd_set_error (bfd_error_wrong_format); |
| 4751 | goto error_return; |
| 4752 | } |
| 4753 | } |
| 4754 | |
| 4755 | if (! dynamic) |
| 4756 | { |
| 4757 | /* If we are creating a shared library, create all the dynamic |
| 4758 | sections immediately. We need to attach them to something, |
| 4759 | so we attach them to this BFD, provided it is the right |
| 4760 | format. FIXME: If there are no input BFD's of the same |
| 4761 | format as the output, we can't make a shared library. */ |
| 4762 | if (bfd_link_pic (info) |
| 4763 | && is_elf_hash_table (htab) |
| 4764 | && info->output_bfd->xvec == abfd->xvec |
| 4765 | && !htab->dynamic_sections_created) |
| 4766 | { |
| 4767 | if (! elf64_ia64_create_dynamic_sections (abfd, info)) |
| 4768 | goto error_return; |
| 4769 | } |
| 4770 | } |
| 4771 | else if (!is_elf_hash_table (htab)) |
| 4772 | goto error_return; |
| 4773 | else |
| 4774 | { |
| 4775 | asection *s; |
| 4776 | bfd_byte *dynbuf; |
| 4777 | bfd_byte *extdyn; |
| 4778 | |
| 4779 | /* ld --just-symbols and dynamic objects don't mix very well. |
| 4780 | ld shouldn't allow it. */ |
| 4781 | if ((s = abfd->sections) != NULL |
| 4782 | && s->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
| 4783 | abort (); |
| 4784 | |
| 4785 | /* Be sure there are dynamic sections. */ |
| 4786 | if (! elf64_ia64_create_dynamic_sections (htab->dynobj, info)) |
| 4787 | goto error_return; |
| 4788 | |
| 4789 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
| 4790 | if (s == NULL) |
| 4791 | { |
| 4792 | /* VMS libraries do not have dynamic sections. Create one from |
| 4793 | the segment. */ |
| 4794 | Elf_Internal_Phdr *phdr; |
| 4795 | unsigned int i, phnum; |
| 4796 | |
| 4797 | phdr = elf_tdata (abfd)->phdr; |
| 4798 | if (phdr == NULL) |
| 4799 | goto error_return; |
| 4800 | phnum = elf_elfheader (abfd)->e_phnum; |
| 4801 | for (i = 0; i < phnum; phdr++) |
| 4802 | if (phdr->p_type == PT_DYNAMIC) |
| 4803 | { |
| 4804 | s = bfd_make_section (abfd, ".dynamic"); |
| 4805 | if (s == NULL) |
| 4806 | goto error_return; |
| 4807 | s->vma = phdr->p_vaddr; |
| 4808 | s->lma = phdr->p_paddr; |
| 4809 | s->size = phdr->p_filesz; |
| 4810 | s->filepos = phdr->p_offset; |
| 4811 | s->flags |= SEC_HAS_CONTENTS; |
| 4812 | s->alignment_power = bfd_log2 (phdr->p_align); |
| 4813 | break; |
| 4814 | } |
| 4815 | if (s == NULL) |
| 4816 | goto error_return; |
| 4817 | } |
| 4818 | |
| 4819 | /* Extract IDENT. */ |
| 4820 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
| 4821 | { |
| 4822 | error_free_dyn: |
| 4823 | free (dynbuf); |
| 4824 | goto error_return; |
| 4825 | } |
| 4826 | |
| 4827 | for (extdyn = dynbuf; |
| 4828 | extdyn < dynbuf + s->size; |
| 4829 | extdyn += bed->s->sizeof_dyn) |
| 4830 | { |
| 4831 | Elf_Internal_Dyn dyn; |
| 4832 | |
| 4833 | bed->s->swap_dyn_in (abfd, extdyn, &dyn); |
| 4834 | if (dyn.d_tag == DT_IA_64_VMS_IDENT) |
| 4835 | { |
| 4836 | bfd_uint64_t tagv = dyn.d_un.d_val; |
| 4837 | elf_ia64_vms_ident (abfd) = tagv; |
| 4838 | break; |
| 4839 | } |
| 4840 | } |
| 4841 | if (extdyn >= dynbuf + s->size) |
| 4842 | { |
| 4843 | /* Ident not found. */ |
| 4844 | goto error_free_dyn; |
| 4845 | } |
| 4846 | free (dynbuf); |
| 4847 | |
| 4848 | /* We do not want to include any of the sections in a dynamic |
| 4849 | object in the output file. We hack by simply clobbering the |
| 4850 | list of sections in the BFD. This could be handled more |
| 4851 | cleanly by, say, a new section flag; the existing |
| 4852 | SEC_NEVER_LOAD flag is not the one we want, because that one |
| 4853 | still implies that the section takes up space in the output |
| 4854 | file. */ |
| 4855 | bfd_section_list_clear (abfd); |
| 4856 | |
| 4857 | /* FIXME: should we detect if this library is already included ? |
| 4858 | This should be harmless and shouldn't happen in practice. */ |
| 4859 | } |
| 4860 | |
| 4861 | hdr = &elf_tdata (abfd)->symtab_hdr; |
| 4862 | symcount = hdr->sh_size / bed->s->sizeof_sym; |
| 4863 | |
| 4864 | /* The sh_info field of the symtab header tells us where the |
| 4865 | external symbols start. We don't care about the local symbols at |
| 4866 | this point. */ |
| 4867 | extsymcount = symcount - hdr->sh_info; |
| 4868 | extsymoff = hdr->sh_info; |
| 4869 | |
| 4870 | sym_hash = NULL; |
| 4871 | if (extsymcount != 0) |
| 4872 | { |
| 4873 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff, |
| 4874 | NULL, NULL, NULL); |
| 4875 | if (isymbuf == NULL) |
| 4876 | goto error_return; |
| 4877 | |
| 4878 | /* We store a pointer to the hash table entry for each external |
| 4879 | symbol. */ |
| 4880 | amt = extsymcount * sizeof (struct elf_link_hash_entry *); |
| 4881 | sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt); |
| 4882 | if (sym_hash == NULL) |
| 4883 | goto error_free_sym; |
| 4884 | elf_sym_hashes (abfd) = sym_hash; |
| 4885 | } |
| 4886 | |
| 4887 | for (isym = isymbuf, isymend = isymbuf + extsymcount; |
| 4888 | isym < isymend; |
| 4889 | isym++, sym_hash++) |
| 4890 | { |
| 4891 | int bind; |
| 4892 | bfd_vma value; |
| 4893 | asection *sec, *new_sec; |
| 4894 | flagword flags; |
| 4895 | const char *name; |
| 4896 | struct elf_link_hash_entry *h; |
| 4897 | bfd_boolean definition; |
| 4898 | bfd_boolean size_change_ok; |
| 4899 | bfd_boolean type_change_ok; |
| 4900 | bfd_boolean common; |
| 4901 | unsigned int old_alignment; |
| 4902 | bfd *old_bfd; |
| 4903 | |
| 4904 | flags = BSF_NO_FLAGS; |
| 4905 | sec = NULL; |
| 4906 | value = isym->st_value; |
| 4907 | *sym_hash = NULL; |
| 4908 | common = bed->common_definition (isym); |
| 4909 | |
| 4910 | bind = ELF_ST_BIND (isym->st_info); |
| 4911 | switch (bind) |
| 4912 | { |
| 4913 | case STB_LOCAL: |
| 4914 | /* This should be impossible, since ELF requires that all |
| 4915 | global symbols follow all local symbols, and that sh_info |
| 4916 | point to the first global symbol. Unfortunately, Irix 5 |
| 4917 | screws this up. */ |
| 4918 | continue; |
| 4919 | |
| 4920 | case STB_GLOBAL: |
| 4921 | if (isym->st_shndx != SHN_UNDEF && !common) |
| 4922 | flags = BSF_GLOBAL; |
| 4923 | break; |
| 4924 | |
| 4925 | case STB_WEAK: |
| 4926 | flags = BSF_WEAK; |
| 4927 | break; |
| 4928 | |
| 4929 | case STB_GNU_UNIQUE: |
| 4930 | flags = BSF_GNU_UNIQUE; |
| 4931 | break; |
| 4932 | |
| 4933 | default: |
| 4934 | /* Leave it up to the processor backend. */ |
| 4935 | break; |
| 4936 | } |
| 4937 | |
| 4938 | if (isym->st_shndx == SHN_UNDEF) |
| 4939 | sec = bfd_und_section_ptr; |
| 4940 | else if (isym->st_shndx == SHN_ABS) |
| 4941 | sec = bfd_abs_section_ptr; |
| 4942 | else if (isym->st_shndx == SHN_COMMON) |
| 4943 | { |
| 4944 | sec = bfd_com_section_ptr; |
| 4945 | /* What ELF calls the size we call the value. What ELF |
| 4946 | calls the value we call the alignment. */ |
| 4947 | value = isym->st_size; |
| 4948 | } |
| 4949 | else |
| 4950 | { |
| 4951 | sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 4952 | if (sec == NULL) |
| 4953 | sec = bfd_abs_section_ptr; |
| 4954 | else if (sec->kept_section) |
| 4955 | { |
| 4956 | /* Symbols from discarded section are undefined. We keep |
| 4957 | its visibility. */ |
| 4958 | sec = bfd_und_section_ptr; |
| 4959 | isym->st_shndx = SHN_UNDEF; |
| 4960 | } |
| 4961 | else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
| 4962 | value -= sec->vma; |
| 4963 | } |
| 4964 | |
| 4965 | name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, |
| 4966 | isym->st_name); |
| 4967 | if (name == NULL) |
| 4968 | goto error_free_vers; |
| 4969 | |
| 4970 | if (bed->elf_add_symbol_hook) |
| 4971 | { |
| 4972 | if (! (*bed->elf_add_symbol_hook) (abfd, info, isym, &name, &flags, |
| 4973 | &sec, &value)) |
| 4974 | goto error_free_vers; |
| 4975 | |
| 4976 | /* The hook function sets the name to NULL if this symbol |
| 4977 | should be skipped for some reason. */ |
| 4978 | if (name == NULL) |
| 4979 | continue; |
| 4980 | } |
| 4981 | |
| 4982 | /* Sanity check that all possibilities were handled. */ |
| 4983 | if (sec == NULL) |
| 4984 | { |
| 4985 | bfd_set_error (bfd_error_bad_value); |
| 4986 | goto error_free_vers; |
| 4987 | } |
| 4988 | |
| 4989 | if (bfd_is_und_section (sec) |
| 4990 | || bfd_is_com_section (sec)) |
| 4991 | definition = FALSE; |
| 4992 | else |
| 4993 | definition = TRUE; |
| 4994 | |
| 4995 | size_change_ok = FALSE; |
| 4996 | type_change_ok = bed->type_change_ok; |
| 4997 | old_alignment = 0; |
| 4998 | old_bfd = NULL; |
| 4999 | new_sec = sec; |
| 5000 | |
| 5001 | if (! bfd_is_und_section (sec)) |
| 5002 | h = elf_link_hash_lookup (htab, name, TRUE, FALSE, FALSE); |
| 5003 | else |
| 5004 | h = ((struct elf_link_hash_entry *) bfd_wrapped_link_hash_lookup |
| 5005 | (abfd, info, name, TRUE, FALSE, FALSE)); |
| 5006 | if (h == NULL) |
| 5007 | goto error_free_sym; |
| 5008 | |
| 5009 | *sym_hash = h; |
| 5010 | |
| 5011 | if (is_elf_hash_table (htab)) |
| 5012 | { |
| 5013 | while (h->root.type == bfd_link_hash_indirect |
| 5014 | || h->root.type == bfd_link_hash_warning) |
| 5015 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5016 | |
| 5017 | /* Remember the old alignment if this is a common symbol, so |
| 5018 | that we don't reduce the alignment later on. We can't |
| 5019 | check later, because _bfd_generic_link_add_one_symbol |
| 5020 | will set a default for the alignment which we want to |
| 5021 | override. We also remember the old bfd where the existing |
| 5022 | definition comes from. */ |
| 5023 | switch (h->root.type) |
| 5024 | { |
| 5025 | default: |
| 5026 | break; |
| 5027 | |
| 5028 | case bfd_link_hash_defined: |
| 5029 | if (abfd->selective_search) |
| 5030 | continue; |
| 5031 | /* Fall-through. */ |
| 5032 | case bfd_link_hash_defweak: |
| 5033 | old_bfd = h->root.u.def.section->owner; |
| 5034 | break; |
| 5035 | |
| 5036 | case bfd_link_hash_common: |
| 5037 | old_bfd = h->root.u.c.p->section->owner; |
| 5038 | old_alignment = h->root.u.c.p->alignment_power; |
| 5039 | break; |
| 5040 | } |
| 5041 | } |
| 5042 | |
| 5043 | if (! (_bfd_generic_link_add_one_symbol |
| 5044 | (info, abfd, name, flags, sec, value, NULL, FALSE, bed->collect, |
| 5045 | (struct bfd_link_hash_entry **) sym_hash))) |
| 5046 | goto error_free_vers; |
| 5047 | |
| 5048 | h = *sym_hash; |
| 5049 | while (h->root.type == bfd_link_hash_indirect |
| 5050 | || h->root.type == bfd_link_hash_warning) |
| 5051 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5052 | |
| 5053 | *sym_hash = h; |
| 5054 | if (definition) |
| 5055 | h->unique_global = (flags & BSF_GNU_UNIQUE) != 0; |
| 5056 | |
| 5057 | /* Set the alignment of a common symbol. */ |
| 5058 | if ((common || bfd_is_com_section (sec)) |
| 5059 | && h->root.type == bfd_link_hash_common) |
| 5060 | { |
| 5061 | unsigned int align; |
| 5062 | |
| 5063 | if (common) |
| 5064 | align = bfd_log2 (isym->st_value); |
| 5065 | else |
| 5066 | { |
| 5067 | /* The new symbol is a common symbol in a shared object. |
| 5068 | We need to get the alignment from the section. */ |
| 5069 | align = new_sec->alignment_power; |
| 5070 | } |
| 5071 | if (align > old_alignment |
| 5072 | /* Permit an alignment power of zero if an alignment of one |
| 5073 | is specified and no other alignments have been specified. */ |
| 5074 | || (isym->st_value == 1 && old_alignment == 0)) |
| 5075 | h->root.u.c.p->alignment_power = align; |
| 5076 | else |
| 5077 | h->root.u.c.p->alignment_power = old_alignment; |
| 5078 | } |
| 5079 | |
| 5080 | if (is_elf_hash_table (htab)) |
| 5081 | { |
| 5082 | /* Check the alignment when a common symbol is involved. This |
| 5083 | can change when a common symbol is overridden by a normal |
| 5084 | definition or a common symbol is ignored due to the old |
| 5085 | normal definition. We need to make sure the maximum |
| 5086 | alignment is maintained. */ |
| 5087 | if ((old_alignment || common) |
| 5088 | && h->root.type != bfd_link_hash_common) |
| 5089 | { |
| 5090 | unsigned int common_align; |
| 5091 | unsigned int normal_align; |
| 5092 | unsigned int symbol_align; |
| 5093 | bfd *normal_bfd; |
| 5094 | bfd *common_bfd; |
| 5095 | |
| 5096 | symbol_align = ffs (h->root.u.def.value) - 1; |
| 5097 | if (h->root.u.def.section->owner != NULL |
| 5098 | && (h->root.u.def.section->owner->flags & DYNAMIC) == 0) |
| 5099 | { |
| 5100 | normal_align = h->root.u.def.section->alignment_power; |
| 5101 | if (normal_align > symbol_align) |
| 5102 | normal_align = symbol_align; |
| 5103 | } |
| 5104 | else |
| 5105 | normal_align = symbol_align; |
| 5106 | |
| 5107 | if (old_alignment) |
| 5108 | { |
| 5109 | common_align = old_alignment; |
| 5110 | common_bfd = old_bfd; |
| 5111 | normal_bfd = abfd; |
| 5112 | } |
| 5113 | else |
| 5114 | { |
| 5115 | common_align = bfd_log2 (isym->st_value); |
| 5116 | common_bfd = abfd; |
| 5117 | normal_bfd = old_bfd; |
| 5118 | } |
| 5119 | |
| 5120 | if (normal_align < common_align) |
| 5121 | { |
| 5122 | /* PR binutils/2735 */ |
| 5123 | if (normal_bfd == NULL) |
| 5124 | _bfd_error_handler |
| 5125 | (_("Warning: alignment %u of common symbol `%s' in %B" |
| 5126 | " is greater than the alignment (%u) of its section %A"), |
| 5127 | common_bfd, h->root.u.def.section, |
| 5128 | 1 << common_align, name, 1 << normal_align); |
| 5129 | else |
| 5130 | _bfd_error_handler |
| 5131 | (_("Warning: alignment %u of symbol `%s' in %B" |
| 5132 | " is smaller than %u in %B"), |
| 5133 | normal_bfd, common_bfd, |
| 5134 | 1 << normal_align, name, 1 << common_align); |
| 5135 | } |
| 5136 | } |
| 5137 | |
| 5138 | /* Remember the symbol size if it isn't undefined. */ |
| 5139 | if ((isym->st_size != 0 && isym->st_shndx != SHN_UNDEF) |
| 5140 | && (definition || h->size == 0)) |
| 5141 | { |
| 5142 | if (h->size != 0 |
| 5143 | && h->size != isym->st_size |
| 5144 | && ! size_change_ok) |
| 5145 | _bfd_error_handler |
| 5146 | (_("Warning: size of symbol `%s' changed" |
| 5147 | " from %lu in %B to %lu in %B"), |
| 5148 | old_bfd, abfd, |
| 5149 | name, (unsigned long) h->size, |
| 5150 | (unsigned long) isym->st_size); |
| 5151 | |
| 5152 | h->size = isym->st_size; |
| 5153 | } |
| 5154 | |
| 5155 | /* If this is a common symbol, then we always want H->SIZE |
| 5156 | to be the size of the common symbol. The code just above |
| 5157 | won't fix the size if a common symbol becomes larger. We |
| 5158 | don't warn about a size change here, because that is |
| 5159 | covered by --warn-common. Allow changed between different |
| 5160 | function types. */ |
| 5161 | if (h->root.type == bfd_link_hash_common) |
| 5162 | h->size = h->root.u.c.size; |
| 5163 | |
| 5164 | if (ELF_ST_TYPE (isym->st_info) != STT_NOTYPE |
| 5165 | && (definition || h->type == STT_NOTYPE)) |
| 5166 | { |
| 5167 | unsigned int type = ELF_ST_TYPE (isym->st_info); |
| 5168 | |
| 5169 | if (h->type != type) |
| 5170 | { |
| 5171 | if (h->type != STT_NOTYPE && ! type_change_ok) |
| 5172 | _bfd_error_handler |
| 5173 | (_("Warning: type of symbol `%s' changed" |
| 5174 | " from %d to %d in %B"), |
| 5175 | abfd, name, h->type, type); |
| 5176 | |
| 5177 | h->type = type; |
| 5178 | } |
| 5179 | } |
| 5180 | |
| 5181 | /* Set a flag in the hash table entry indicating the type of |
| 5182 | reference or definition we just found. Keep a count of |
| 5183 | the number of dynamic symbols we find. A dynamic symbol |
| 5184 | is one which is referenced or defined by both a regular |
| 5185 | object and a shared object. */ |
| 5186 | if (! dynamic) |
| 5187 | { |
| 5188 | if (! definition) |
| 5189 | { |
| 5190 | h->ref_regular = 1; |
| 5191 | if (bind != STB_WEAK) |
| 5192 | h->ref_regular_nonweak = 1; |
| 5193 | } |
| 5194 | else |
| 5195 | { |
| 5196 | BFD_ASSERT (!h->def_dynamic); |
| 5197 | h->def_regular = 1; |
| 5198 | } |
| 5199 | } |
| 5200 | else |
| 5201 | { |
| 5202 | BFD_ASSERT (definition); |
| 5203 | h->def_dynamic = 1; |
| 5204 | h->dynindx = -2; |
| 5205 | ((struct elf64_ia64_link_hash_entry *)h)->shl = abfd; |
| 5206 | } |
| 5207 | } |
| 5208 | } |
| 5209 | |
| 5210 | if (isymbuf != NULL) |
| 5211 | { |
| 5212 | free (isymbuf); |
| 5213 | isymbuf = NULL; |
| 5214 | } |
| 5215 | |
| 5216 | /* If this object is the same format as the output object, and it is |
| 5217 | not a shared library, then let the backend look through the |
| 5218 | relocs. |
| 5219 | |
| 5220 | This is required to build global offset table entries and to |
| 5221 | arrange for dynamic relocs. It is not required for the |
| 5222 | particular common case of linking non PIC code, even when linking |
| 5223 | against shared libraries, but unfortunately there is no way of |
| 5224 | knowing whether an object file has been compiled PIC or not. |
| 5225 | Looking through the relocs is not particularly time consuming. |
| 5226 | The problem is that we must either (1) keep the relocs in memory, |
| 5227 | which causes the linker to require additional runtime memory or |
| 5228 | (2) read the relocs twice from the input file, which wastes time. |
| 5229 | This would be a good case for using mmap. |
| 5230 | |
| 5231 | I have no idea how to handle linking PIC code into a file of a |
| 5232 | different format. It probably can't be done. */ |
| 5233 | if (! dynamic |
| 5234 | && is_elf_hash_table (htab) |
| 5235 | && bed->check_relocs != NULL |
| 5236 | && (*bed->relocs_compatible) (abfd->xvec, info->output_bfd->xvec)) |
| 5237 | { |
| 5238 | asection *o; |
| 5239 | |
| 5240 | for (o = abfd->sections; o != NULL; o = o->next) |
| 5241 | { |
| 5242 | Elf_Internal_Rela *internal_relocs; |
| 5243 | bfd_boolean ok; |
| 5244 | |
| 5245 | if ((o->flags & SEC_RELOC) == 0 |
| 5246 | || o->reloc_count == 0 |
| 5247 | || ((info->strip == strip_all || info->strip == strip_debugger) |
| 5248 | && (o->flags & SEC_DEBUGGING) != 0) |
| 5249 | || bfd_is_abs_section (o->output_section)) |
| 5250 | continue; |
| 5251 | |
| 5252 | internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, |
| 5253 | info->keep_memory); |
| 5254 | if (internal_relocs == NULL) |
| 5255 | goto error_return; |
| 5256 | |
| 5257 | ok = (*bed->check_relocs) (abfd, info, o, internal_relocs); |
| 5258 | |
| 5259 | if (elf_section_data (o)->relocs != internal_relocs) |
| 5260 | free (internal_relocs); |
| 5261 | |
| 5262 | if (! ok) |
| 5263 | goto error_return; |
| 5264 | } |
| 5265 | } |
| 5266 | |
| 5267 | return TRUE; |
| 5268 | |
| 5269 | error_free_vers: |
| 5270 | error_free_sym: |
| 5271 | if (isymbuf != NULL) |
| 5272 | free (isymbuf); |
| 5273 | error_return: |
| 5274 | return FALSE; |
| 5275 | } |
| 5276 | |
| 5277 | static bfd_boolean |
| 5278 | elf64_vms_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info) |
| 5279 | { |
| 5280 | int pass; |
| 5281 | struct bfd_link_hash_entry **pundef; |
| 5282 | struct bfd_link_hash_entry **next_pundef; |
| 5283 | |
| 5284 | /* We only accept VMS libraries. */ |
| 5285 | if (info->output_bfd->xvec != abfd->xvec) |
| 5286 | { |
| 5287 | bfd_set_error (bfd_error_wrong_format); |
| 5288 | return FALSE; |
| 5289 | } |
| 5290 | |
| 5291 | /* The archive_pass field in the archive itself is used to |
| 5292 | initialize PASS, since we may search the same archive multiple |
| 5293 | times. */ |
| 5294 | pass = ++abfd->archive_pass; |
| 5295 | |
| 5296 | /* Look through the list of undefined symbols. */ |
| 5297 | for (pundef = &info->hash->undefs; *pundef != NULL; pundef = next_pundef) |
| 5298 | { |
| 5299 | struct bfd_link_hash_entry *h; |
| 5300 | symindex symidx; |
| 5301 | bfd *element; |
| 5302 | bfd *orig_element; |
| 5303 | |
| 5304 | h = *pundef; |
| 5305 | next_pundef = &(*pundef)->u.undef.next; |
| 5306 | |
| 5307 | /* When a symbol is defined, it is not necessarily removed from |
| 5308 | the list. */ |
| 5309 | if (h->type != bfd_link_hash_undefined |
| 5310 | && h->type != bfd_link_hash_common) |
| 5311 | { |
| 5312 | /* Remove this entry from the list, for general cleanliness |
| 5313 | and because we are going to look through the list again |
| 5314 | if we search any more libraries. We can't remove the |
| 5315 | entry if it is the tail, because that would lose any |
| 5316 | entries we add to the list later on. */ |
| 5317 | if (*pundef != info->hash->undefs_tail) |
| 5318 | { |
| 5319 | *pundef = *next_pundef; |
| 5320 | next_pundef = pundef; |
| 5321 | } |
| 5322 | continue; |
| 5323 | } |
| 5324 | |
| 5325 | /* Look for this symbol in the archive hash table. */ |
| 5326 | symidx = _bfd_vms_lib_find_symbol (abfd, h->root.string); |
| 5327 | if (symidx == BFD_NO_MORE_SYMBOLS) |
| 5328 | { |
| 5329 | /* Nothing in this slot. */ |
| 5330 | continue; |
| 5331 | } |
| 5332 | |
| 5333 | element = bfd_get_elt_at_index (abfd, symidx); |
| 5334 | if (element == NULL) |
| 5335 | return FALSE; |
| 5336 | |
| 5337 | if (element->archive_pass == -1 || element->archive_pass == pass) |
| 5338 | { |
| 5339 | /* Next symbol if this archive is wrong or already handled. */ |
| 5340 | continue; |
| 5341 | } |
| 5342 | |
| 5343 | orig_element = element; |
| 5344 | if (bfd_is_thin_archive (abfd)) |
| 5345 | { |
| 5346 | element = _bfd_vms_lib_get_imagelib_file (element); |
| 5347 | if (element == NULL || !bfd_check_format (element, bfd_object)) |
| 5348 | { |
| 5349 | orig_element->archive_pass = -1; |
| 5350 | return FALSE; |
| 5351 | } |
| 5352 | } |
| 5353 | else if (! bfd_check_format (element, bfd_object)) |
| 5354 | { |
| 5355 | element->archive_pass = -1; |
| 5356 | return FALSE; |
| 5357 | } |
| 5358 | |
| 5359 | /* Unlike the generic linker, we know that this element provides |
| 5360 | a definition for an undefined symbol and we know that we want |
| 5361 | to include it. We don't need to check anything. */ |
| 5362 | if (! (*info->callbacks->add_archive_element) (info, element, |
| 5363 | h->root.string, &element)) |
| 5364 | continue; |
| 5365 | if (! elf64_vms_link_add_object_symbols (element, info)) |
| 5366 | return FALSE; |
| 5367 | |
| 5368 | orig_element->archive_pass = pass; |
| 5369 | } |
| 5370 | |
| 5371 | return TRUE; |
| 5372 | } |
| 5373 | |
| 5374 | static bfd_boolean |
| 5375 | elf64_vms_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
| 5376 | { |
| 5377 | switch (bfd_get_format (abfd)) |
| 5378 | { |
| 5379 | case bfd_object: |
| 5380 | return elf64_vms_link_add_object_symbols (abfd, info); |
| 5381 | break; |
| 5382 | case bfd_archive: |
| 5383 | return elf64_vms_link_add_archive_symbols (abfd, info); |
| 5384 | break; |
| 5385 | default: |
| 5386 | bfd_set_error (bfd_error_wrong_format); |
| 5387 | return FALSE; |
| 5388 | } |
| 5389 | } |
| 5390 | |
| 5391 | static bfd_boolean |
| 5392 | elf64_ia64_vms_mkobject (bfd *abfd) |
| 5393 | { |
| 5394 | return bfd_elf_allocate_object |
| 5395 | (abfd, sizeof (struct elf64_ia64_vms_obj_tdata), IA64_ELF_DATA); |
| 5396 | } |
| 5397 | |
| 5398 | |
| 5399 | /* Size-dependent data and functions. */ |
| 5400 | static const struct elf_size_info elf64_ia64_vms_size_info = { |
| 5401 | sizeof (Elf64_External_VMS_Ehdr), |
| 5402 | sizeof (Elf64_External_Phdr), |
| 5403 | sizeof (Elf64_External_Shdr), |
| 5404 | sizeof (Elf64_External_Rel), |
| 5405 | sizeof (Elf64_External_Rela), |
| 5406 | sizeof (Elf64_External_Sym), |
| 5407 | sizeof (Elf64_External_Dyn), |
| 5408 | sizeof (Elf_External_Note), |
| 5409 | 4, |
| 5410 | 1, |
| 5411 | 64, 3, /* ARCH_SIZE, LOG_FILE_ALIGN */ |
| 5412 | ELFCLASS64, EV_CURRENT, |
| 5413 | bfd_elf64_write_out_phdrs, |
| 5414 | elf64_vms_write_shdrs_and_ehdr, |
| 5415 | bfd_elf64_checksum_contents, |
| 5416 | bfd_elf64_write_relocs, |
| 5417 | bfd_elf64_swap_symbol_in, |
| 5418 | bfd_elf64_swap_symbol_out, |
| 5419 | bfd_elf64_slurp_reloc_table, |
| 5420 | bfd_elf64_slurp_symbol_table, |
| 5421 | bfd_elf64_swap_dyn_in, |
| 5422 | bfd_elf64_swap_dyn_out, |
| 5423 | bfd_elf64_swap_reloc_in, |
| 5424 | bfd_elf64_swap_reloc_out, |
| 5425 | bfd_elf64_swap_reloca_in, |
| 5426 | bfd_elf64_swap_reloca_out |
| 5427 | }; |
| 5428 | |
| 5429 | #define ELF_ARCH bfd_arch_ia64 |
| 5430 | #define ELF_MACHINE_CODE EM_IA_64 |
| 5431 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ |
| 5432 | #define ELF_COMMONPAGESIZE 0x200 /* 16KB */ |
| 5433 | |
| 5434 | #define elf_backend_section_from_shdr \ |
| 5435 | elf64_ia64_section_from_shdr |
| 5436 | #define elf_backend_section_flags \ |
| 5437 | elf64_ia64_section_flags |
| 5438 | #define elf_backend_fake_sections \ |
| 5439 | elf64_ia64_fake_sections |
| 5440 | #define elf_backend_final_write_processing \ |
| 5441 | elf64_ia64_final_write_processing |
| 5442 | #define elf_backend_add_symbol_hook \ |
| 5443 | elf64_ia64_add_symbol_hook |
| 5444 | #define elf_info_to_howto \ |
| 5445 | elf64_ia64_info_to_howto |
| 5446 | |
| 5447 | #define bfd_elf64_bfd_reloc_type_lookup \ |
| 5448 | ia64_elf_reloc_type_lookup |
| 5449 | #define bfd_elf64_bfd_reloc_name_lookup \ |
| 5450 | ia64_elf_reloc_name_lookup |
| 5451 | #define bfd_elf64_bfd_is_local_label_name \ |
| 5452 | elf64_ia64_is_local_label_name |
| 5453 | #define bfd_elf64_bfd_relax_section \ |
| 5454 | elf64_ia64_relax_section |
| 5455 | |
| 5456 | #define elf_backend_object_p \ |
| 5457 | elf64_ia64_object_p |
| 5458 | |
| 5459 | /* Stuff for the BFD linker: */ |
| 5460 | #define bfd_elf64_bfd_link_hash_table_create \ |
| 5461 | elf64_ia64_hash_table_create |
| 5462 | #define elf_backend_create_dynamic_sections \ |
| 5463 | elf64_ia64_create_dynamic_sections |
| 5464 | #define elf_backend_check_relocs \ |
| 5465 | elf64_ia64_check_relocs |
| 5466 | #define elf_backend_adjust_dynamic_symbol \ |
| 5467 | elf64_ia64_adjust_dynamic_symbol |
| 5468 | #define elf_backend_size_dynamic_sections \ |
| 5469 | elf64_ia64_size_dynamic_sections |
| 5470 | #define elf_backend_omit_section_dynsym \ |
| 5471 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) |
| 5472 | #define elf_backend_relocate_section \ |
| 5473 | elf64_ia64_relocate_section |
| 5474 | #define elf_backend_finish_dynamic_symbol \ |
| 5475 | elf64_ia64_finish_dynamic_symbol |
| 5476 | #define elf_backend_finish_dynamic_sections \ |
| 5477 | elf64_ia64_finish_dynamic_sections |
| 5478 | #define bfd_elf64_bfd_final_link \ |
| 5479 | elf64_ia64_final_link |
| 5480 | |
| 5481 | #define bfd_elf64_bfd_merge_private_bfd_data \ |
| 5482 | elf64_ia64_merge_private_bfd_data |
| 5483 | #define bfd_elf64_bfd_set_private_flags \ |
| 5484 | elf64_ia64_set_private_flags |
| 5485 | #define bfd_elf64_bfd_print_private_bfd_data \ |
| 5486 | elf64_ia64_print_private_bfd_data |
| 5487 | |
| 5488 | #define elf_backend_plt_readonly 1 |
| 5489 | #define elf_backend_want_plt_sym 0 |
| 5490 | #define elf_backend_plt_alignment 5 |
| 5491 | #define elf_backend_got_header_size 0 |
| 5492 | #define elf_backend_want_got_plt 1 |
| 5493 | #define elf_backend_may_use_rel_p 1 |
| 5494 | #define elf_backend_may_use_rela_p 1 |
| 5495 | #define elf_backend_default_use_rela_p 1 |
| 5496 | #define elf_backend_want_dynbss 0 |
| 5497 | #define elf_backend_hide_symbol elf64_ia64_hash_hide_symbol |
| 5498 | #define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol |
| 5499 | #define elf_backend_reloc_type_class elf64_ia64_reloc_type_class |
| 5500 | #define elf_backend_rela_normal 1 |
| 5501 | #define elf_backend_special_sections elf64_ia64_special_sections |
| 5502 | #define elf_backend_default_execstack 0 |
| 5503 | |
| 5504 | /* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with |
| 5505 | SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields. |
| 5506 | We don't want to flood users with so many error messages. We turn |
| 5507 | off the warning for now. It will be turned on later when the Intel |
| 5508 | compiler is fixed. */ |
| 5509 | #define elf_backend_link_order_error_handler NULL |
| 5510 | |
| 5511 | /* VMS-specific vectors. */ |
| 5512 | |
| 5513 | #undef TARGET_LITTLE_SYM |
| 5514 | #define TARGET_LITTLE_SYM ia64_elf64_vms_vec |
| 5515 | #undef TARGET_LITTLE_NAME |
| 5516 | #define TARGET_LITTLE_NAME "elf64-ia64-vms" |
| 5517 | #undef TARGET_BIG_SYM |
| 5518 | #undef TARGET_BIG_NAME |
| 5519 | |
| 5520 | /* These are VMS specific functions. */ |
| 5521 | |
| 5522 | #undef elf_backend_object_p |
| 5523 | #define elf_backend_object_p elf64_vms_object_p |
| 5524 | |
| 5525 | #undef elf_backend_section_from_shdr |
| 5526 | #define elf_backend_section_from_shdr elf64_vms_section_from_shdr |
| 5527 | |
| 5528 | #undef elf_backend_post_process_headers |
| 5529 | #define elf_backend_post_process_headers elf64_vms_post_process_headers |
| 5530 | |
| 5531 | #undef elf_backend_section_processing |
| 5532 | #define elf_backend_section_processing elf64_vms_section_processing |
| 5533 | |
| 5534 | #undef elf_backend_final_write_processing |
| 5535 | #define elf_backend_final_write_processing elf64_vms_final_write_processing |
| 5536 | |
| 5537 | #undef bfd_elf64_close_and_cleanup |
| 5538 | #define bfd_elf64_close_and_cleanup elf64_vms_close_and_cleanup |
| 5539 | |
| 5540 | #undef elf_backend_section_from_bfd_section |
| 5541 | |
| 5542 | #undef elf_backend_symbol_processing |
| 5543 | |
| 5544 | #undef elf_backend_want_p_paddr_set_to_zero |
| 5545 | |
| 5546 | #undef ELF_OSABI |
| 5547 | #define ELF_OSABI ELFOSABI_OPENVMS |
| 5548 | |
| 5549 | #undef ELF_MAXPAGESIZE |
| 5550 | #define ELF_MAXPAGESIZE 0x10000 /* 64KB */ |
| 5551 | |
| 5552 | #undef elf64_bed |
| 5553 | #define elf64_bed elf64_ia64_vms_bed |
| 5554 | |
| 5555 | #define elf_backend_size_info elf64_ia64_vms_size_info |
| 5556 | |
| 5557 | /* Use VMS-style archives (in particular, don't use the standard coff |
| 5558 | archive format). */ |
| 5559 | #define bfd_elf64_archive_functions |
| 5560 | |
| 5561 | #undef bfd_elf64_archive_p |
| 5562 | #define bfd_elf64_archive_p _bfd_vms_lib_ia64_archive_p |
| 5563 | #undef bfd_elf64_write_archive_contents |
| 5564 | #define bfd_elf64_write_archive_contents _bfd_vms_lib_write_archive_contents |
| 5565 | #undef bfd_elf64_mkarchive |
| 5566 | #define bfd_elf64_mkarchive _bfd_vms_lib_ia64_mkarchive |
| 5567 | |
| 5568 | #define bfd_elf64_archive_slurp_armap \ |
| 5569 | _bfd_vms_lib_slurp_armap |
| 5570 | #define bfd_elf64_archive_slurp_extended_name_table \ |
| 5571 | _bfd_vms_lib_slurp_extended_name_table |
| 5572 | #define bfd_elf64_archive_construct_extended_name_table \ |
| 5573 | _bfd_vms_lib_construct_extended_name_table |
| 5574 | #define bfd_elf64_archive_truncate_arname \ |
| 5575 | _bfd_vms_lib_truncate_arname |
| 5576 | #define bfd_elf64_archive_write_armap \ |
| 5577 | _bfd_vms_lib_write_armap |
| 5578 | #define bfd_elf64_archive_read_ar_hdr \ |
| 5579 | _bfd_vms_lib_read_ar_hdr |
| 5580 | #define bfd_elf64_archive_write_ar_hdr \ |
| 5581 | _bfd_vms_lib_write_ar_hdr |
| 5582 | #define bfd_elf64_archive_openr_next_archived_file \ |
| 5583 | _bfd_vms_lib_openr_next_archived_file |
| 5584 | #define bfd_elf64_archive_get_elt_at_index \ |
| 5585 | _bfd_vms_lib_get_elt_at_index |
| 5586 | #define bfd_elf64_archive_generic_stat_arch_elt \ |
| 5587 | _bfd_vms_lib_generic_stat_arch_elt |
| 5588 | #define bfd_elf64_archive_update_armap_timestamp \ |
| 5589 | _bfd_vms_lib_update_armap_timestamp |
| 5590 | |
| 5591 | /* VMS link methods. */ |
| 5592 | #undef bfd_elf64_bfd_link_add_symbols |
| 5593 | #define bfd_elf64_bfd_link_add_symbols elf64_vms_bfd_link_add_symbols |
| 5594 | |
| 5595 | #undef elf_backend_want_got_sym |
| 5596 | #define elf_backend_want_got_sym 0 |
| 5597 | |
| 5598 | #undef bfd_elf64_mkobject |
| 5599 | #define bfd_elf64_mkobject elf64_ia64_vms_mkobject |
| 5600 | |
| 5601 | /* Redefine to align segments on block size. */ |
| 5602 | #undef ELF_MAXPAGESIZE |
| 5603 | #define ELF_MAXPAGESIZE 0x200 /* 512B */ |
| 5604 | |
| 5605 | #undef elf_backend_want_got_plt |
| 5606 | #define elf_backend_want_got_plt 0 |
| 5607 | |
| 5608 | #include "elf64-target.h" |